Communication method and related apparatus

Abstract

Provided are a communication method and a related apparatus. The method comprises: a first communication apparatus determining, on the basis of received first information, a first random access resource among N random access resources, and the first communication apparatus sending second information on the first random access resource. The first random access resource is associated with at least one of the following: a type of the first communication apparatus, a capability of the first communication apparatus, or a category of the first communication apparatus. In this manner, compared with an implementation in which capability information is reported after an initial access procedure (or a random access procedure), a first communication apparatus is capable of sending second information by using a random access resource associated with at least one of a type, a capability, or a category of the first communication apparatus, allowing a receiver of the second information to identify the at least one of the type, the capability, or the category of the communication apparatus during the initial access procedure, thereby reducing communication latency, and improving communication performance.

Description

A communication method and related apparatus

[0001] This application claims priority to Chinese Patent Application No. 202411988574.4, filed with the State Intellectual Property Office of China on December 28, 2024, entitled "A Communication Method and Related Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a communication method and related apparatus. Background Technology

[0003] Currently, taking the communication process between network devices and terminal devices as an example, the terminal device can receive broadcast signals (such as synchronization signals) from the network device to obtain synchronization information, and then implement a random access process based on this synchronization information. Furthermore, after random access, the network device can configure or indicate resources matching the capability information reported by the terminal device, enabling the terminal device to transmit data based on those resources.

[0004] However, in the above process, after accessing the network, the terminal device needs to indicate the capabilities it supports through the exchange of capability information, so that the network device can configure or indicate resources that match the capability information for the terminal device. This approach inevitably leads to increased communication latency. How to further reduce communication latency is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] This application provides a communication method and related apparatus for reducing communication latency and improving network performance.

[0006] The first aspect of this application provides a communication method applied to a first communication device. For example, the first communication device may be a communication equipment (such as a terminal device), or it may be a component of the communication equipment (such as a processor, circuit, chip, or chip system responsible for communication functions, including but not limited to a modem chip, a baseband chip, a system-on-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip, etc.). Alternatively, the first communication device may also be a logic module or software capable of implementing all or part of the functions of the communication equipment. The following description uses a first communication device as an example.

[0007] In this method, a first communication device receives first information for determining a first random access resource among N random access resources, where N is an integer greater than 1; the first communication device sends second information carried on the first random access resource, which is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0008] Based on the above scheme, compared with the implementation method of reporting capability information after the initial access procedure (or random access procedure), the first communication device can send the second information through random access resources associated with at least one of its own type, capability or category, so that the recipient of the second information can identify at least one of the communication device's type, capability or category during the initial access procedure, thereby reducing communication latency and improving the performance of the communication system.

[0009] Optionally, the N random access resources can be associated with different frequency domain resources. For example, in the frequency domain, the N random access resources can each be contained within N different frequency domain resources. Alternatively, in the frequency domain, the N random access resources can each correspond to N different frequency domain resources. Furthermore, the indexes of the N random access resources can be used to determine the indices of the N different frequency domain resources. In the above process, after the first communication device completes the initial access procedure by sending second information through random access resources associated with at least one of its own type, capability, or category, the first communication device can also use the frequency domain resources associated with at least one of its own type, capability, or category for data transmission in subsequent data transmission processes. In this way, compared to the implementation method of resource allocation based on reported capability information after the initial access procedure, communication latency can be further reduced and data transmission performance can be improved.

[0010] Optionally, the first information used to determine random access resources may be broadcast information, such as a system information block (SIB), SIB1, etc., or other information / message / signaling names defined by the network in the future.

[0011] Optionally, the second information carried on the random access resource may be a random access preamble, a random access request, message 1 (Msg1), message A (MsgA), or a physical random access channel (PRACH), or the second information may be other information / message / signaling names defined by the network in the future.

[0012] As an implementation example, the types of communication devices involved in this application include at least one of the following: enhanced mobile broadband (eMBB), reduced capabilities (Redcap), ultra-reliable and low-latency communication (URLLC), narrowband internet of things (NB-IoT), or machine-type communication (MTC). Optionally, the types of communication devices involved in this application can be replaced with other descriptions, such as the service type of the communication device or the service characteristics supported by the communication device. The type of communication device can also be referred to as a communication device applied to a specific type of service.

[0013] As an implementation example, the communication device involved in this application includes at least one of the following: radio frequency bandwidth capability, carrier aggregation capability, data transmission capability, multiple input multiple output (MIMO) capability, and receiver processing capability. Optionally, the capabilities of the communication device involved in this application can be replaced with other descriptions, such as the communication capability of the communication device, the signal processing capability of the communication device, or the capabilities supported by the communication device.

[0014] As an implementation example, the categories of communication devices involved in this application include at least one of the following: Category 1 User Equipment (UE), Category 2 User Equipment (UE), Category M1 User Equipment (UE), Category M2 User Equipment (UE), Category NB1 User Equipment (UE), Category NB2 User Equipment (UE), or Reduced Capability User Equipment (Redcap UE). Optionally, the category of the communication device can be replaced with other descriptions, such as the UE category of the communication device, the scenario category to which the communication device is applicable, or the service category supported by the communication device.

[0015] In one possible implementation of the first aspect, the method further includes: the first communication device determining the first random access resource based on at least one of the device type, the capability of the first communication device, or the category of the first communication device.

[0016] Based on the above scheme, after receiving the first information, the first communication device can determine the first random access resource based on at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device, so as to determine the random access resource associated with at least one of its own type, capability, or category.

[0017] In one possible implementation of the first aspect, the N random access resources satisfy at least one of the following:

[0018] The different types of communication devices associated with the different random access resources among these N random access resources; or,

[0019] The communication devices associated with different random access resources among these N random access resources have different capabilities; or,

[0020] The different categories of communication devices associated with the different random access resources among these N random access resources are different.

[0021] Based on the above scheme, communication devices of different types, capabilities, or categories can send second information based on different random access resources among N random access resources to realize the initial access process, so that the recipient of the second information can identify at least one of the type, capability, or category of the communication device during the initial access process.

[0022] In one possible implementation of the first aspect, M of the N random access resources correspond to M frequency domain resource groups. For example, the M random access resources are each contained in M ​​frequency domain resource groups, where M is an integer greater than 1 and less than or equal to N. For example, different random access resources correspond to different frequency domain resource groups.

[0023] Optionally, the frequency domain resource group involved in this application may be a component carrier (CC), a carrier, a bandwidth part (BWP), or other names defined by the future network.

[0024] Based on the above scheme, different random access resources correspond to different frequency domain resource groups. In this way, the second information carried by different random access resources can be transmitted through different frequency domain resource groups, thereby distinguishing different random access resources.

[0025] Furthermore, the types, capabilities, or categories of different first communication devices may differ. In the above scheme, the first communication device can initiate initial access based on a frequency domain resource group that matches at least one of its own type, capability, or category, and subsequently transmit data based on that frequency domain resource group, which can reduce the signaling overhead of scheduling or indicating the frequency domain resource group.

[0026] In one possible implementation of the first aspect, the M frequency domain resource groups correspond to a first frequency domain resource set, for example, the M frequency domain resource groups are contained in the first frequency domain resource set, which includes one or more frequency domain resource groups.

[0027] Optionally, the frequency domain resource set involved in this application can be a unified carrier (Uni-carrier), aggregated carrier, joint carrier, or other names defined by the future network. For example, a Uni-carrier can contain one or more frequency domain resource groups, and the frequency domain resource groups contained in different Uni-carriers can be different from each other or partially the same. For example, the frequency domain resource set includes one or more carriers within the same frequency band, or the frequency domain resource set includes multiple carriers within multiple frequency bands.

[0028] Optionally, the frequency band in this application may be the operating band defined by the NR protocol, or it may be a portion of the frequency domain resources within the operating band. A frequency band may refer to a segment of frequency domain resources, which may include continuous frequency domain resources or discontinuous frequency domain resources.

[0029] Optionally, a frequency band may include one or more frequency domain resource groups.

[0030] Alternatively, a frequency band can also be described as a frequency zone. For example, a frequency zone can refer to a segment of bandwidth in the frequency domain.

[0031] Optionally, frequency domain resources in the same frequency domain resource set are equivalent to a logical carrier. For example, frequency domain resources in the same frequency domain resource set can share a radio frequency channel, and / or, one or more signals carried by frequency domain resources in the same frequency domain resource set can undergo fast Fourier transform (FFT) operations.

[0032] Optionally, when M frequency domain resource groups correspond to the first frequency domain resource set, the first information includes at least one of the following:

[0033] First indication information, which is used to indicate the first frequency domain resource set; or...

[0034] The second indication information is used to indicate one or more frequency domain resource groups included in the first frequency domain resource set.

[0035] Based on the above scheme, the sender of the first information (e.g., the second communication device) can indicate the frequency domain resource set containing M frequency domain resource groups that include M random access resources through the first indication information and / or the second indication information. Subsequently, after the first communication device successfully completes the initial access through the first random access resource among the M random access resources based on the indication of the first indication information and / or the second indication information, the first communication device can communicate not only based on the frequency domain resource group corresponding to the first random access resource, but also based on the frequency domain resource set containing the frequency domain resource group corresponding to the first random access resource, which can reduce the indication overhead of the frequency domain resource set.

[0036] In one possible implementation of the first aspect, the M frequency domain resource groups correspond to M frequency domain resource sets, for example, the M frequency domain resource groups are each contained in M ​​frequency domain resource sets. For example, the m-th frequency domain resource group of the M frequency domain resource groups is contained in the m-th frequency domain resource set of the M frequency domain resource sets, where m takes the value from 1 to M.

[0037] Optionally, when the M frequency domain resource groups correspond to M frequency domain resource sets respectively, the first information includes at least one of the following:

[0038] The third indication information is used to indicate the M frequency domain resource sets;

[0039] The fourth indication information is used to indicate one or more frequency domain resource groups included in the M frequency domain resource sets.

[0040] Based on the above scheme, the sender of the first information (e.g., the second communication device) can indicate the M frequency domain resource sets containing the M frequency domain resource groups that contain M random access resources through the third indication information and / or the fourth indication information. Subsequently, after the first communication device successfully completes the initial access through the first random access resource among the M random access resources based on the indication of the third indication information and / or the fourth indication information, the first communication device can communicate not only based on the frequency domain resource group corresponding to the first random access resource, but also based on the frequency domain resource set where the frequency domain resource group corresponding to the first random access resource is located, which can reduce the indication overhead of the frequency domain resource set.

[0041] In one possible implementation of the first aspect, the first information includes at least one of the following:

[0042] The fifth indication information is used to indicate that the M random access resources are associated with the M frequency domain resource groups; or,

[0043] The sixth indication information is used to indicate at least one of the type, capability, and category of the communication device associated with each of the M random access resources; or,

[0044] The seventh indication information is used to indicate at least one of the following: the type, capability, and category of the communication device associated with each of the M frequency domain resource groups; or,

[0045] The eighth indication information is used to indicate at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters corresponding to the second information; wherein the M random access resources satisfy at least one of the following: the sequence parameters corresponding to different random access resources among the M random access resources are different, the time-domain parameters corresponding to different random access resources among the M random access resources are different, or the frequency-domain parameters corresponding to different random access resources among the M random access resources are different; or,

[0046] The ninth indication information is used to indicate the resource information of the response resources corresponding to the M random access resources, and the response resources are used to transmit the response information of the second information.

[0047] Based on the above scheme, when M random access resources out of N random access resources correspond to M frequency domain resource groups respectively, the sender of the first information can indicate the relevant information through at least one of the fifth to ninth indication information, so that the first communication device can communicate based on the relevant information.

[0048] For example, taking the frequency domain parameters in each group of random access resources as an example, the frequency domain parameters may include at least one of the following: frequency domain band indication (e.g., freqBandIndicator), absolute frequency point A (e.g., absoluteFrequencyPointA, ARFCH), RACH configuration parameters (e.g., rach-configCommon), the type of communication device associated with the frequency domain parameter (e.g., ue_type), the capability of the communication device associated with the frequency domain parameter (e.g., ue_capability), and the category of the communication device associated with the frequency domain parameter (e.g., ue_categoryIndex).

[0049] As an example, when the first information includes fifth indication information, the first communication device can determine, through the fifth indication information, that M random access resources are associated with M frequency domain resource groups. This allows the first communication device to determine that the m-th random access resource among the M random access resources is included in the m-th frequency domain resource group among the M frequency domain resource groups, where m takes values ​​from 1 to M. Subsequently, after determining the m-th random access resource based on at least one of its own type, capability, or category, the first communication device initiates random access within the m-th frequency domain resource group associated with the m-th random access resource. For example, the m-th random access resource in the m-th frequency domain resource group sends second information.

[0050] As an example, when the first information includes sixth indication information, the first communication device can determine at least one of the type, capability, and category of the communication device associated with each random access resource through the sixth indication information, so that the first communication device can determine one of the M random access resources based on at least one of its own type, capability, and category. Thereafter, the first communication device can initiate random access based on that one random access resource. For example, the first communication device sends second information on that one random access resource.

[0051] As an example, when the first information includes seventh indication information, the first communication device can determine at least one of the type, capability, and category of the communication device associated with each frequency domain resource group through the seventh indication information, enabling the first communication device to determine at least one of its own type, capability, and category to identify one of the M frequency domain resource groups. Subsequently, the first communication device can initiate random access based on the random access resources in that one frequency domain resource group. For example, the first communication device sends second information using the random access resources in that one frequency domain resource group.

[0052] As an example, when the first information includes eighth indication information, the first communication device can determine at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters corresponding to the second information through the eighth indication information, so that the first communication device can initiate random access based on at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters. For example, the first communication device sends the second information based on at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters.

[0053] As an example, when the first information includes ninth indication information, the first communication device can determine the resource information of response resources (e.g., RAR resources) corresponding to M random access resources through the ninth indication information. These response resources are used to transmit the response information (e.g., RAR) of the second information. This allows the first communication device to receive the response information of the second information on the specified response resources, thereby improving the success rate of receiving the response information. Optionally, the resource information of the response resources (e.g., RAR resources) indicated by the ninth indication information can be referred to Figures 4c to 4d below and their related descriptions.

[0054] In one possible implementation of the first aspect, K random access resources out of N random access resources correspond to a first frequency domain resource group. For example, K random access resources out of N random access resources are included in the first frequency domain resource group, where K is an integer greater than 1.

[0055] For example, different random access resources may correspond to the same frequency domain resource group.

[0056] Optionally, the K random access resources may contain the same random access resources as the M random access resources mentioned above, or they may not contain the same random access resources.

[0057] Based on the above scheme, the second information carried by different random access resources in K random access resources can be transmitted through the same frequency domain resource group, so as to realize the random access process corresponding to different random access resources through the same frequency domain resource group, which can reduce the implementation complexity.

[0058] In one possible implementation of the first aspect, the different random access resources among the K random access resources occupy different time-frequency resources; or, the different random access resources among the K random access resources occupy different sequence resources; or, the different random access resources among the K random access resources occupy different time-frequency resources and different sequence resources.

[0059] Optionally, the time-frequency resources involved in this application may differ, including: different time-domain resources and / or different frequency-domain resources.

[0060] Based on the above scheme, when K random access resources correspond to the first frequency domain resource group, the second information transmitted by different random access resources in the K random access resources can be distinguished by time-frequency resources and / or sequence resources, so that the receiver of the second information can identify different first communication devices by different time-frequency resources and / or different sequence resources.

[0061] In one possible implementation of the first aspect, the first information includes at least one of the following:

[0062] The tenth indication information is used to indicate at least one of the type, capability, and category of the communication device associated with each of the K random access resources; or,

[0063] The eleventh indication information is used to indicate at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters corresponding to the second information; wherein the K random access resources satisfy at least one of the following: the sequence parameters corresponding to different random access resources among the K random access resources are different, the time-domain parameters corresponding to different random access resources among the K random access resources are different, and the frequency-domain parameters corresponding to different random access resources among the K random access resources are different; or,

[0064] The twelfth indication information is used to indicate the resource information of the response resources corresponding to the K random access resources, and the response resources are used to transmit the response information of the second information; or,

[0065] The thirteenth indication information is used to indicate multiple time-domain parameters corresponding to the second information, and at least one of the following: type, capability, and category of the communication device associated with each of the multiple time-domain parameters; wherein, different time-domain parameters are associated with different types of communication devices, different capabilities of the communication devices associated with different time-domain parameters, and different categories of the communication devices associated with different time-domain parameters; or,

[0066] The fourteenth indication information is used to indicate multiple frequency domain parameters corresponding to the second information, and at least one of the following: type, capability, and category of the communication device associated with each of the multiple frequency domain parameters; wherein, different frequency domain parameters are associated with different types of communication devices, different capabilities of the communication devices associated with different frequency domain parameters, and different categories of the communication devices associated with different frequency domain parameters; or,

[0067] The fifteenth instruction information is used to indicate a plurality of sequence parameters corresponding to the second information, and at least one of the type, capability, and category of the communication device associated with each of the plurality of sequence parameters; wherein, the communication devices associated with different sequence parameters are of different types, have different capabilities, and are associated with different categories.

[0068] Based on the above scheme, when the K random access resources included in the N random access resources correspond to the first frequency domain resource group, the sender of the first information (such as the second communication device) can indicate the relevant information through at least one of the tenth to fifteenth indication information, so that the first communication device can communicate based on the relevant information.

[0069] As an example, when the first information includes tenth indication information, the first communication device can determine at least one of the following: type, capability, and category of the communication device associated with each of the K random access resources, using the tenth indication information. This allows the first communication device to determine one of the K random access resources based on at least one of its own type, capability, and category, as well as the tenth indication information. Subsequently, the first communication device can initiate random access based on that one random access resource. For example, the first communication device might send second information using that one random access resource.

[0070] As an example, when the first information includes eleventh indication information, the first communication device can determine at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters corresponding to the second information through the eleventh indication information. This allows the first communication device to initiate random access based on at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters. For example, the first communication device can send the second information based on at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters.

[0071] As an example, when the first information includes twelfth indication information, the first communication device can determine the resource information of the response resources corresponding to K random access resources through the twelfth indication information. These response resources are used to transmit the response information of the second information. This allows the first communication device to receive the response information of the second information on the specified response resources, thereby improving the success rate of receiving the response information. Optionally, the resource information of the response resources (e.g., RAR resources) indicated by the twelfth indication information can be referred to Figures 4c to 4d below and their related descriptions.

[0072] As an example, when the first information includes a thirteenth indication, the first communication device can determine multiple time-domain parameters corresponding to the second information through the thirteenth indication, and at least one of the following: the type, capability, and category of the communication device associated with each of the multiple time-domain parameters. This ensures that different time-domain parameters satisfy at least one of the following: different time-domain parameters are associated with different types of communication devices, different time-domain parameters are associated with different capabilities of communication devices, or different time-domain parameters are associated with different categories of communication devices. In this way, the first communication device can initiate random access based on time-domain parameters associated with at least one of its own type, capability, or category. For example, if the first communication device sends the second information based on time-domain resources associated with at least one of its own type, capability, or category, the recipient of the second information can identify at least one of the type, capability, or category of the communication device through different time-domain resources during the initial access process, thereby reducing communication latency.

[0073] As an example, when the first information includes fourteenth indication information, the first communication device can determine, through the fourteenth indication information, multiple frequency domain parameters corresponding to the second information, and at least one of the following: the type, capability, and category of the communication device associated with each of the multiple frequency domain parameters. This ensures that different frequency domain parameters satisfy at least one of the following: different frequency domain parameters are associated with different types of communication devices, different frequency domain parameters are associated with different capabilities of communication devices, or different frequency domain parameters are associated with different categories of communication devices. In this way, the first communication device can initiate random access based on frequency domain parameters associated with at least one of its own type, capability, or category. For example, if the first communication device sends the second information based on frequency domain resources associated with at least one of its own type, capability, or category, the recipient of the second information can identify at least one of the type, capability, or category of the communication device during the initial access process, thereby reducing communication latency.

[0074] As an example, when the first information includes a fifteenth indication, the first communication device can determine, through the fifteenth indication, multiple sequence parameters corresponding to the second information, and at least one of the following: the type, capability, and category of the communication device associated with each of the multiple sequence parameters. This ensures that different sequence parameters satisfy at least one of the following: different sequence parameters are associated with different types of communication devices, different sequence parameters are associated with different capabilities of communication devices, or different sequence parameters are associated with different categories of communication devices. In this way, the first communication device can initiate random access based on sequence parameters associated with at least one of its own type, capability, or category. For example, if the first communication device sends the second information based on sequence resources associated with at least one of its own type, capability, or category, the recipient of the second information can identify at least one of the type, capability, or category of the communication device during the initial access process, thereby reducing communication latency.

[0075] In one possible implementation of the first aspect, Q of the N random access resources correspond to P response resources, which are used to transmit response information of the second information. The P response resources correspond to P frequency domain resource groups (e.g., the P response resources are respectively contained in P frequency domain resource groups), where Q is an integer greater than 1 and less than or equal to N, and P is a positive integer less than or equal to Q.

[0076] For example, different random access resources can correspond to different response resources of the same random access resource, or different random access resources can correspond to the response resources of the same random access resource.

[0077] Optionally, the response information of the second information may be a random access response (RAR), message 2 (Msg2), message B (MsgB), random access reply, or other information / message / signaling names defined by the network in the future.

[0078] Optionally, the response resource corresponding to the random access resource can be a RAR resource, Msg2 resource, MsgB resource, random access response resource, or other information / message / signaling name defined by the network in the future.

[0079] Based on the above scheme, when Q is greater than 1 and P is equal to Q, the response resources corresponding to at least two of the N random access resources are located in different frequency domain resource groups. This enables the first communication device that sends the second information through different random access resources to receive the response information of the second information through the response resources in different frequency domain resource groups, thereby reducing or minimizing the interference of different response information, increasing the number of accesses of the first communication device, and improving access performance.

[0080] When Q is greater than 1 and P is less than Q, the response resources corresponding to at least two of the N random access resources are located in the same frequency domain resource group. This enables the first communication device that sends the second information through different random access resources to receive the response information of the second information through the response resources in the same frequency domain resource group. This reduces the implementation complexity, improves resource utilization, and achieves network energy saving.

[0081] Optionally, the Q random access resources may contain the same random access resources as the M random access resources mentioned above, or they may not contain the same random access resources.

[0082] Optionally, the Q random access resources may contain the same random access resources as the K random access resources mentioned above, or they may not contain the same random access resources.

[0083] In one possible implementation of the first aspect, the first information is used to indicate the resource configuration (e.g., time-frequency domain resource location) of the P response resources.

[0084] Based on the above scheme, the first communication device can determine the resource configuration of P response resources through the first information, and then receive the response information of the second information based on the resource configuration, thereby improving the success rate of receiving the response information.

[0085] In one possible implementation of the first aspect, the transmission resources of the first information are determined by a first broadcast signal; the method further includes: the first communication device receiving response information of the second information; wherein the response information of the second information and the first broadcast signal are carried in the same frequency domain resource group of the same frequency domain resource set, or the response information of the second information and the first broadcast signal are carried in different frequency domain resource groups of the same frequency domain resource set, or the response information of the second information and the first broadcast signal are carried in different frequency domain resource sets.

[0086] Based on the above scheme, the response information of the second information and the first broadcast signal are respectively carried on different receiving resources of the first communication device. These two receiving resources can be included in (or correspond to) the same frequency domain resource group of the same frequency domain resource set, so that the first communication device can receive the first broadcast signal and the response information of the second information within the same frequency domain resource group of the same frequency domain resource set, thereby reducing the implementation complexity, improving resource utilization, and realizing network energy saving.

[0087] Alternatively, the two resources mentioned above can be contained in (or correspond to) different frequency domain resource groups within the same frequency domain resource set. This allows the first communication device to receive the first broadcast signal and the response information of the second information within different frequency domain resource groups of the same frequency domain resource set, reducing transmission interference between the two resources and improving the reception performance of the response information of the second information. Furthermore, the frequency domain resource containing the response information of the second information can be used for subsequent data transmission. In this way, different first communication devices can subsequently transmit data in different frequency domain resource groups of the same frequency domain resource set, reducing resource scheduling overhead during data transmission and adapting to the transmission needs of response information from different communication devices.

[0088] Alternatively, the two resources mentioned above can be contained in (or correspond to) different frequency domain resource sets, enabling the first communication device to receive the first broadcast signal and the response information of the second information within different frequency domain resource sets. This reduces transmission interference between the two resources, thereby improving the reception performance of the response information of the second information. Furthermore, the frequency domain resource containing the response information of the second information can be used for subsequent data transmission. In this way, different first communication devices can subsequently transmit data in different frequency domain resource sets, reducing resource scheduling overhead during data transmission and adapting to the transmission needs of response information from different communication devices.

[0089] In one possible implementation of the first aspect, the transmission resources of the first information are determined by a first broadcast signal; wherein the frequency domain resources carrying the first broadcast signal are associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0090] Based on the above scheme, the frequency domain resources carrying the first broadcast signal are associated with at least one of the type, capability, or category of the first communication device. In this way, first communication devices of different types, capabilities, or categories can receive broadcast signals through different frequency domain resources, enabling the first communication devices to synchronize based on broadcast signals on frequency domain resources that match at least one of their own type, capability, or category.

[0091] In one possible implementation of the first aspect, the method further includes: the first communication device determining frequency domain resources carrying the first broadcast signal based on at least one of the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0092] Based on the above scheme, the first communication device can determine the frequency domain resources for receiving broadcast signals according to at least one of the type of the first communication device, the capability of the first communication device, or the category of the first communication device, so that the first communication device can synchronize based on the broadcast signals on the frequency domain resources that match at least one of its own type, capability, or category.

[0093] In one possible implementation of the first aspect, the response information of the second information is used to indicate the frequency domain resources of the first broadcast signal and / or the frequency domain resources of the first random access resource. For example, the response information of the second information may include an index or identifier of the frequency domain resources of the first broadcast signal, such as an SSB band / carrier index (SBCI). As another example, the response information of the second information may include an index or identifier of the frequency domain resources of the first random access, such as a random access channel band carrier index (RBCI).

[0094] Based on the above scheme, the first communication device can determine the frequency domain resources of the first broadcast signal through the response information of the second information, so that the first communication device can determine whether the response information of the second information is the response information corresponding to the second information sent by the first communication device through the comparison of frequency domain resources, so as to complete the subsequent access process.

[0095] Alternatively, the first communication device can determine the frequency domain resources of the random access resources corresponding to the response signal through the response information of the second information, so that the first communication device can determine whether the response information of the second information is the response information corresponding to the second information sent by the first communication device through the comparison of the frequency domain resources, so as to complete the subsequent access process.

[0096] Optionally, the first information may indicate the frequency domain resources of the first broadcast signal. For example, the first information may include an index or identifier of the frequency domain resources of the first broadcast signal, such as the index being SBCI. In this way, the first communication device can send second information based on the first information, and after receiving response information indicating the second information that corresponds to the second information, the first communication device can determine that the response information is the response information corresponding to the first communication device, thereby resolving random access conflicts and achieving network energy saving.

[0097] In one possible implementation of the first aspect, the transmission resources of the first information are determined by a first broadcast signal; the method further includes: the first communication device receiving a second broadcast signal; the first communication device receiving third information based on the second broadcast signal; wherein the third information indicates L frequency domain resources corresponding to L broadcast signals, the L broadcast signals including the first broadcast signal, the frequency domain resource carrying the first broadcast signal being the first frequency domain resource among the L frequency domain resources, and L being an integer greater than or equal to 1; wherein the first frequency domain resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0098] Based on the above scheme, the third information can indicate L frequency domain resources corresponding to L broadcast signals, and the first communication device can receive the first broadcast signal based on the first frequency domain resources associated with at least one of its own type, capability or category, so that the first communication device can synchronize based on the broadcast signal on the frequency domain resources that match at least one of its own type, capability or category.

[0099] Optionally, the above method further includes: the first communication device determining a first frequency domain resource among L frequency domain resources based on at least one of the type of the first communication device, the capability of the first communication device, or the category of the first communication device, and receiving a first broadcast signal on the first frequency domain resource, so that the first communication device can synchronize based on the broadcast signal on the frequency domain resource that matches at least one of its own type, capability, or category.

[0100] In one possible implementation of the first aspect, the third information includes at least one of the following:

[0101] The sixteenth indication information is used to indicate the types of communication devices that are allowed to access the L broadcast signals; wherein, different broadcast signals among the L broadcast signals allow different types of communication devices to access; or,

[0102] The seventeenth indication information is used to indicate the capabilities of the communication devices allowed to access the L broadcast signals; wherein, the capabilities of the communication devices allowed to access the L broadcast signals differ; or,

[0103] The eighteenth indication information is used to indicate the categories of communication devices that are allowed to access the L broadcast signals; wherein, different broadcast signals among the L broadcast signals allow different categories of communication devices to access; or,

[0104] The nineteenth instruction information is used to indicate the minimum bandwidth allowed for access to the L broadcast signals.

[0105] Based on the above scheme, the sender of the third information (such as the second communication device) can indicate the relevant information of the L broadcast signals corresponding to the L frequency domain resources through at least one of the sixteenth to nineteenth indication information, so that the first communication device can communicate based on this relevant information.

[0106] In one possible implementation of the first aspect, at least one of the following is satisfied:

[0107] The type of communication device associated with the first broadcast signal is different from the type of communication device associated with the second broadcast signal; or,

[0108] The capabilities of the communication device associated with the first broadcast signal differ from those of the communication device associated with the second broadcast signal; or,

[0109] The type of communication device associated with the first broadcast signal is different from the type of communication device associated with the second broadcast signal.

[0110] Based on the above scheme, the first communication device can determine a frequency domain resource that matches at least one of its own type, capability, or category by searching for a certain broadcast signal. Based on this frequency domain resource, it can receive another broadcast signal and obtain synchronization, enabling the first communication device to access the network on demand, thus improving the flexibility of the scheme implementation. Furthermore, the first communication device can subsequently transmit data using the synchronized broadcast signal, allowing subsequent data transmission based on frequency domain resources that match at least one of its own type, capability, or category. This reduces resource scheduling overhead during data transmission, lowers latency, and improves communication performance.

[0111] A second aspect of this application provides a communication method applied to a second communication device. For example, the second communication device may be a communication equipment (such as a terminal device or network device), or it may be a component of a communication equipment (such as a processor, circuit, chip, or chip system responsible for communication functions, including but not limited to a modem chip, a baseband chip, a system-on-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip, etc.). Alternatively, the second communication device may also be a logic module or software capable of implementing all or part of the functions of a communication equipment. The following description uses a second communication device as an example.

[0112] In this method, a second communication device sends first information indicating N random access resources, where N is an integer greater than 1; the second communication device receives second information carrying a first random access resource among the N random access resources; the first random access resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0113] Based on the above scheme, compared with the implementation method of reporting capability information after the initial access procedure (or random access procedure), the first communication device can send the second information through random access resources associated with at least one of its own type, capability or category, so that the recipient of the second information can identify at least one of the communication device's type, capability or category during the initial access procedure, thereby reducing communication latency and improving communication performance.

[0114] Optionally, the N random access resources can be associated with different frequency domain resources. For example, in the frequency domain, the N random access resources can each be contained in (or correspond to) N different frequency domain resources. Alternatively, the indices of the N random access resources can be used to determine the indices of the N different frequency domain resources. In the above process, after the first communication device completes the initial access procedure by sending second information through random access resources associated with at least one of its own type, capability, or category, the first communication device can also use the frequency domain resources associated with at least one of its own type, capability, or category for data transmission in subsequent data transmission processes. In this way, compared to the implementation method of resource allocation based on reported capability information after the initial access procedure, communication latency can be further reduced and data transmission performance can be improved.

[0115] In one possible implementation of the second aspect, the method further includes: the second communication device determining at least one of the following based on the first random access resource: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0116] Based on the above scheme, after receiving the second information, the second communication device can determine at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0117] In one possible implementation of the second aspect, the N random access resources satisfy at least one of the following:

[0118] The different types of communication devices associated with the different random access resources among these N random access resources; or,

[0119] The communication devices associated with different random access resources among these N random access resources have different capabilities; or,

[0120] The different categories of communication devices associated with the different random access resources among these N random access resources are different.

[0121] Based on the above scheme, communication devices of different types, capabilities, or categories can send second information based on different random access resources among N random access resources to realize the initial access process, so that the second communication device can identify at least one of the type, capability, or category of the communication device during the initial access process.

[0122] In one possible implementation of the second aspect, M random access resources out of N random access resources correspond to M frequency domain resource groups, and the M random access resources out of N random access resources are contained in M ​​frequency domain resource groups, where M is an integer greater than 1 and less than or equal to N.

[0123] Based on the above scheme, among the M random access resources contained in the N random access resources, these M random access resources can each correspond to M frequency domain resource groups (for example, the m-th random access resource among the M random access resources is contained in the m-th frequency domain resource group among the M frequency domain resource groups, where m takes values ​​from 1 to M). In this way, the second information carried by different random access resources among the M random access resources can be transmitted through different frequency domain resource groups, so as to distinguish different random access resources through different frequency domain resource groups.

[0124] Furthermore, different first communication devices may have different types, capabilities, or categories. In the above scheme, the first communication device can make initial access based on a frequency domain resource group that matches at least one of its own type, capability, or category, and subsequently make data transmission based on the determined frequency domain resource group, which can reduce the signaling overhead of scheduling or indicating the frequency domain resource group.

[0125] In one possible implementation of the second aspect, the M frequency domain resource groups correspond to a first frequency domain resource set, which includes one or more frequency domain resource groups. The first information includes at least one of the following:

[0126] First indication information, which is used to indicate the first frequency domain resource set; or...

[0127] The second indication information is used to indicate one or more frequency domain resource groups included in the first frequency domain resource set.

[0128] Based on the above scheme, the second communication device can indicate the frequency domain resource set containing M frequency domain resource groups that include M random access resources through the first indication information and / or the second indication information. Subsequently, after the first communication device successfully completes the initial access through the first random access resource among the M random access resources based on the indication of the first indication information and / or the second indication information, the second communication device can communicate not only based on the frequency domain resource group corresponding to the first random access resource, but also based on the frequency domain resource set containing the frequency domain resource group corresponding to the first random access resource, which can reduce the indication overhead of the frequency domain resource set.

[0129] In one possible implementation of the second aspect, the M frequency domain resource groups respectively correspond to M frequency domain resource sets, and the first information includes at least one of the following:

[0130] The third indication information is used to indicate the M frequency domain resource sets;

[0131] The fourth indication information is used to indicate one or more frequency domain resource groups included in the M frequency domain resource sets.

[0132] Based on the above scheme, the second communication device can indicate the M frequency domain resource sets containing the M frequency domain resource groups that contain M random access resources through the third indication information and / or the fourth indication information. Subsequently, after the first communication device successfully completes the initial access through the first random access resource among the M random access resources based on the indication of the third indication information and / or the fourth indication information, the second communication device can communicate not only based on the frequency domain resource group corresponding to the first random access resource, but also based on the frequency domain resource set where the frequency domain resource group corresponding to the first random access resource is located, which can reduce the indication overhead of the frequency domain resource set.

[0133] In one possible implementation of the second aspect, the first information includes at least one of the following:

[0134] The fifth to ninth instruction information are the same as the fifth to ninth instruction information in the first aspect.

[0135] In one possible implementation of the second aspect, K random access resources out of N random access resources correspond to a first frequency domain resource group. For example, K random access resources out of N random access resources are included in the first frequency domain resource group, where K is an integer greater than 1.

[0136] Based on the above scheme, the second information carried by different random access resources in K random access resources can be transmitted through the same frequency domain resource group, so as to realize the random access process corresponding to different random access resources through the same frequency domain resource group, which can reduce the implementation complexity.

[0137] In one possible implementation of the second aspect, the different random access resources among the K random access resources occupy different time-frequency resources; or, the different random access resources among the K random access resources occupy different sequence resources; or, the different random access resources among the K random access resources occupy different time-frequency resources, and the different random access resources among the K random access resources occupy different sequence resources.

[0138] Based on the above scheme, when K random access resources correspond to the first frequency domain resource group, the second information transmitted by different random access resources in the K random access resources can be distinguished by time-frequency resources and / or sequence resources, so that the second communication device can identify different first communication devices by different time-frequency resources and / or different sequence resources.

[0139] In one possible implementation of the second aspect, the first information includes at least one of the following:

[0140] The tenth to fifteenth instruction information are the same as the fifth to ninth instruction information of the first aspect.

[0141] Based on the above scheme, when the K random access resources included in the N random access resources correspond to the first frequency domain resource group, the second can indicate the relevant information through at least one of the tenth to fifteenth indication information, so that the first communication device can communicate based on the relevant information indicated by the second communication device, thereby improving the success rate of random access.

[0142] In one possible implementation of the second aspect, Q of the N random access resources correspond to P response resources, which are used to transmit response information of the second information. The P response resources correspond to P frequency domain resource groups (e.g., the P response resources are respectively contained in P frequency domain resource groups), where Q is an integer greater than 1 and less than or equal to N, and P is a positive integer less than or equal to Q.

[0143] Based on the above scheme, when Q is greater than 1 and P is equal to Q, the response resources corresponding to at least two of the N random access resources are located in different frequency domain resource groups. This allows the second communication device to receive the second information through different random access resources and then send the response information of the second information through the response resources in different frequency domain resource groups. This reduces or minimizes the interference between different response information, increases the number of accesses of the first communication device, and improves access performance.

[0144] Alternatively, when Q is greater than 1 and P is less than Q, the response resources corresponding to at least two of the N random access resources are located in the same frequency domain resource group. This allows the second communication device to receive the second information through different random access resources and then send the response information of the second information through the response resources in the same frequency domain resource group. This reduces the implementation complexity, improves resource utilization, and achieves network energy saving.

[0145] In one possible implementation of the second aspect, the first information is used to indicate the resource configuration (e.g., time-frequency domain resource location) of the P response resources.

[0146] Based on the above scheme, after the second communication device sends the first information, the first communication device can determine the resource configuration of P response resources through the first information. Subsequently, the second communication device can send the response information of the second information based on the resource configuration, so as to improve the success rate of receiving the response information.

[0147] In one possible implementation of the second aspect, the transmission resources of the first information are determined by a first broadcast signal; the method further includes: the second communication device transmitting response information of the second information; wherein the response information of the second information and the first broadcast signal are carried in the same frequency domain resource group of the same frequency domain resource set, or the response information of the second information and the first broadcast signal are carried in different frequency domain resource groups of the same frequency domain resource set, or the response information of the second information and the first broadcast signal are carried in different frequency domain resource sets.

[0148] Based on the above scheme, the response information of the second information and the first broadcast signal are respectively carried on two receiving resources of the first communication device. These two receiving resources can correspond to the same frequency domain resource group in the same frequency domain resource set, so that the second communication device can transmit the first broadcast signal and the response information of the second information in the same frequency domain resource group in the same frequency domain resource set, thereby reducing the implementation complexity, improving resource utilization, and realizing network energy saving.

[0149] Alternatively, the two resources mentioned above can be contained in (or correspond to) different frequency domain resource groups within the same frequency domain resource set. This allows the second communication device to transmit the first broadcast signal and the response information of the second information within different frequency domain resource groups of the same frequency domain resource set, reducing transmission interference between the two resources and improving the reception performance of the response information of the second information. Furthermore, the frequency domain resource containing the response information of the second information can be used for subsequent data transmission. In this way, different first communication devices can subsequently transmit data in different frequency domain resource groups of the same frequency domain resource set, reducing the resource scheduling overhead of the data transmission process and adapting to the transmission needs of the response information of different communication devices.

[0150] Alternatively, the two resources mentioned above can be contained in (or correspond to) different frequency domain resource sets, enabling the second communication device to transmit the first broadcast signal and the response information of the second information within different frequency domain resource sets. This reduces transmission interference between the two resources and improves the reception performance of the response information of the second information. Furthermore, the frequency domain resource containing the response information of the second information can be used for subsequent data transmission. In this way, different first communication devices can subsequently transmit data in different frequency domain resource sets, reducing resource scheduling overhead during data transmission and adapting to the transmission needs of response information from different communication devices.

[0151] In one possible implementation of the second aspect, the transmission resources of the first information are determined by a first broadcast signal; wherein the frequency domain resources carrying the first broadcast signal are associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0152] Based on the above scheme, the frequency domain resources carrying the first broadcast signal are associated with at least one of the type, capability, or category of the first communication device. In this way, first communication devices of different types, capabilities, or categories can receive broadcast signals through different frequency domain resources, enabling the first communication devices to synchronize based on broadcast signals on frequency domain resources that match at least one of their own type, capability, or category.

[0153] In one possible implementation of the second aspect, the response information of the second information is used to indicate the frequency domain resources of the first broadcast signal. For example, the response information of the second information may include an index or identifier of the frequency domain resources of the first broadcast signal, such as an SBCI. Alternatively, the response information of the second information may include an index or identifier of the frequency domain resources of the first random access, such as a RACH band carrier index (RBCI).

[0154] Based on the above scheme, the response information of the second information sent by the second communication device can be used to determine the frequency domain resources of the first broadcast signal, so that after receiving the response information of the second information, the first communication device can determine whether the response information of the second information is the response information corresponding to the second information sent by the first communication device by comparing the frequency domain resources, so as to complete the subsequent access process.

[0155] And / or, the response information sent by the second communication device to the second information can be used to determine the frequency domain resources of the random access resources corresponding to the response information, so that after receiving the response information of the second information, the first communication device can determine whether the response information of the second information is the response information corresponding to the second information sent by the first communication device by comparing the frequency domain resources, so as to complete the subsequent access process. Optionally, the first information can indicate the frequency domain resources of the first broadcast signal. For example, the first information may include an index or identifier of the frequency domain resources of the first broadcast signal, such as the index being SBCI. In this way, the first communication device can send the second information based on the first information, and after receiving the response information of the second information indicating the same frequency domain resources, the first communication device can determine that the response information of the second information is the response information corresponding to the first communication device, so as to resolve random access conflicts and achieve network energy saving.

[0156] In one possible implementation of the second aspect, the transmission resources of the first information are determined by a first broadcast signal; the method further includes: the second communication device transmitting a second broadcast signal; the second communication device transmitting third information based on the second broadcast signal; wherein the third information indicates L frequency domain resources corresponding to L broadcast signals, the L broadcast signals including the first broadcast signal, the frequency domain resource carrying the first broadcast signal being the first frequency domain resource among the L frequency domain resources, and L being an integer greater than or equal to 1; wherein the first frequency domain resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0157] Based on the above scheme, the third information sent by the second communication device to the first communication device can indicate L frequency domain resources corresponding to L broadcast signals, and the first communication device can receive the first broadcast signal based on the first frequency domain resources associated with at least one of its own type, capability or category, so that the first communication device can synchronize based on the broadcast signal on the frequency domain resources that match at least one of its own type, capability or category.

[0158] In one possible implementation of the second aspect, the third information includes at least one of the following:

[0159] The sixteenth to nineteenth instruction messages are identical to the sixteenth to nineteenth instruction messages of the first aspect.

[0160] Based on the above scheme, the second communication device can indicate the relevant information of L broadcast signals corresponding to L frequency domain resources through at least one of the sixteenth to nineteenth indication information, so that the first communication device can communicate based on this relevant information.

[0161] In one possible implementation of the second aspect, at least one of the following is satisfied:

[0162] The type of communication device associated with the first broadcast signal is different from the type of communication device associated with the second broadcast signal; or,

[0163] The capabilities of the communication device associated with the first broadcast signal differ from those of the communication device associated with the second broadcast signal; or,

[0164] The type of communication device associated with the first broadcast signal is different from the type of communication device associated with the second broadcast signal.

[0165] Based on the above scheme, the second communication device can send different broadcast signals based on different types, capabilities, or categories. This allows the first communication device to determine a frequency domain resource matching at least one of its own type, capability, or category by searching for a particular broadcast signal, and to receive and synchronize another broadcast signal based on that frequency domain resource. This enables the first communication device to access the network on demand, improving the flexibility of the scheme implementation. Furthermore, the first communication device can subsequently transmit data using the synchronized broadcast signal, allowing subsequent data transmission based on frequency domain resources matching at least one of its own type, capability, or category. This reduces resource scheduling overhead during data transmission, lowers latency, and improves communication performance.

[0166] A third aspect of this application provides a communication method applied to a first communication device. For example, the first communication device may be a communication equipment (such as a terminal device), or it may be a component of the communication equipment (e.g., a processor, circuit, chip, or chip system responsible for communication functions, including but not limited to a modem chip, a baseband chip, a system-on-a-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip, etc.). Alternatively, the first communication device may also be a logic module or software capable of implementing all or part of the functions of the communication equipment. The following description uses a first communication device as an example.

[0167] In this method, a first communication device receives a first broadcast signal, the frequency domain resources carrying the first broadcast signal being associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device; the first communication device receives first information based on the first broadcast signal, the first information indicating the frequency domain resources of the first broadcast signal. For example, the first information includes information about the frequency domain resources of the first broadcast signal.

[0168] Based on the above scheme, the first communication device can determine the frequency domain resources for receiving broadcast signals according to at least one of the type of the first communication device, the capability of the first communication device, or the category of the first communication device, so that the first communication device can synchronize based on the broadcast signals on the frequency domain resources that match at least one of its own type, capability, or category.

[0169] Furthermore, the first information may indicate the frequency domain resources of the first broadcast signal. For example, the first information includes information about the frequency domain resources of the first broadcast signal. For example, the first information may include an index or identifier of the frequency domain resources of the first broadcast signal, such as the index being SBCI. In this way, the first communication device can send second information based on the first information, and after receiving response information indicating the second information that corresponds to the second information, the first communication device can determine that the response information is the response information corresponding to the first communication device, thereby resolving random access conflicts and achieving network energy saving.

[0170] It should be noted that the implementation process of the third aspect can also refer to the first aspect and its possible implementation methods, and achieve the corresponding technical effects.

[0171] A fourth aspect of this application provides a communication method applied to a second communication device. For example, the second communication device may be a communication equipment (such as a terminal device or network device), or it may be a component of the communication equipment (such as a processor, circuit, chip, or chip system responsible for communication functions, including but not limited to a modem chip, a baseband chip, a system-on-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip, etc.). Alternatively, the second communication device may also be a logic module or software capable of implementing all or part of the functions of the communication equipment. The following description uses a second communication device as an example.

[0172] In this method, a second communication device transmits a first broadcast signal, the frequency domain resources carrying the first broadcast signal being associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device; the second communication device transmits first information based on the first broadcast signal, the first information indicating the frequency domain resources of the first broadcast signal. For example, the first information includes information about the frequency domain resources of the first broadcast signal.

[0173] Based on the above scheme, the frequency domain resources of the first broadcast signal transmitted by the second communication device are associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device, so that the first communication device can synchronize based on the broadcast signal on the frequency domain resources that match at least one of its type, capability, or category.

[0174] Furthermore, the first information may indicate the frequency domain resources of the first broadcast signal. For example, the first information includes information about the frequency domain resources of the first broadcast signal. For example, the first information may include an index or identifier of the frequency domain resources of the first broadcast signal, such as the index being SBCI. In this way, the first communication device can send second information based on the first information, and after receiving response information indicating the second information that corresponds to the second information, the first communication device can determine that the response information is the response information corresponding to the first communication device, thereby resolving random access conflicts and achieving network energy saving.

[0175] It should be noted that the implementation process of the fourth aspect can also refer to the second aspect and its possible implementation methods, and achieve the corresponding technical effects.

[0176] The fifth aspect of this application provides a communication method applied to a first communication device. For example, the first communication device may be a communication equipment (such as a terminal device), or it may be a component of the communication equipment (e.g., a processor, circuit, chip, or chip system responsible for communication functions, including but not limited to a modem chip, a baseband chip, a system-on-a-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip, etc.). Alternatively, the first communication device may also be a logic module or software capable of implementing all or part of the functions of the communication equipment. The following description uses the first communication device as an example.

[0177] In this method, a first communication device receives a second broadcast signal; the first communication device receives third information based on the second broadcast signal; wherein the third information indicates L frequency domain resources corresponding to L broadcast signals, the L broadcast signals including the first broadcast signal, the frequency domain resource carrying the first broadcast signal being the first frequency domain resource among the L frequency domain resources, and L being an integer greater than or equal to 1; wherein the first frequency domain resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device; the first communication device receives the first broadcast signal on the first frequency domain resource.

[0178] Based on the above scheme, the first communication device can determine the transmission resources of the third information by receiving the second broadcast signal, and receive the third information on the transmission resources. The third information can indicate L frequency domain resources corresponding to L broadcast signals, and the first communication device can receive the first broadcast signal based on a first frequency domain resource associated with at least one of its own type, capability, or category, enabling the first communication device to synchronize based on broadcast signals on frequency domain resources matching at least one of its own type, capability, or category.

[0179] It should be noted that the implementation process of the fifth aspect can also refer to the first aspect and its possible implementation methods, and achieve the corresponding technical effects.

[0180] The sixth aspect of this application provides a communication method applied to a second communication device. For example, the second communication device may be a communication equipment (such as a terminal device or network device), or it may be a component of the communication equipment (such as a processor, circuit, chip, or chip system responsible for communication functions, including but not limited to a modem chip, a baseband chip, a system-on-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip, etc.). Alternatively, the second communication device may also be a logic module or software capable of implementing all or part of the functions of the communication equipment. The following description uses a second communication device as an example.

[0181] In this method, a second communication device transmits a second broadcast signal; the second communication device transmits third information based on the second broadcast signal; wherein the third information indicates L frequency domain resources corresponding to L broadcast signals, the L broadcast signals including the first broadcast signal, the frequency domain resource carrying the first broadcast signal being the first frequency domain resource among the L frequency domain resources, and L being an integer greater than or equal to 1; wherein the first frequency domain resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device; the second communication device transmits the first broadcast signal on the first frequency domain resource.

[0182] Based on the above scheme, after the second communication device sends the third information based on the second broadcast signal, the first communication device can determine the transmission resource of the third information through the received second broadcast signal and receive the third information on the transmission resource. The third information can indicate L frequency domain resources corresponding to L broadcast signals, and the first communication device can receive the first broadcast signal based on a first frequency domain resource associated with at least one of its own type, capability, or category, enabling the first communication device to synchronize based on broadcast signals on frequency domain resources matching at least one of its own type, capability, or category.

[0183] It should be noted that the implementation process of the sixth aspect can also refer to the second aspect and its possible implementation methods, and achieve the corresponding technical effects.

[0184] A seventh aspect of this application provides a communication device that performs the functions described in the first aspect above. For example, the communication device includes modules, units, or means corresponding to the operations involved in the first aspect. These modules, units, or means can be implemented in software, hardware, or a combination of both. For instance, the device includes a processing unit and a transceiver unit. The transceiver unit receives first information, and the processing unit determines a first random access resource from N random access resources based on the first information, where N is an integer greater than 1. The transceiver unit also transmits second information carried on the first random access resource, which is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0185] In the seventh aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the first aspect and achieve the corresponding technical effects. For details, please refer to the first aspect, which will not be repeated here.

[0186] An eighth aspect of this application provides a communication device that performs the functions described in the second aspect above. For example, the communication device includes modules, units, or means corresponding to the operations involved in the second aspect. These modules, units, or means can be implemented in software, hardware, or a combination of both. For instance, the device includes a processing unit and a transceiver unit. The processing unit determines first information; the transceiver unit transmits the first information, which indicates N random access resources, where N is an integer greater than 1; the transceiver unit also receives second information, which is carried in a first random access resource among the N random access resources; the first random access resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0187] In the eighth aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the second aspect and achieve the corresponding technical effects. For details, please refer to the second aspect, which will not be repeated here.

[0188] A ninth aspect of this application provides a communication device that performs the functions described in the third aspect above. For example, the communication device includes modules, units, or means corresponding to the operations involved in the third aspect. These modules, units, or means can be implemented in software, hardware, or a combination of both. For instance, the device includes a processing unit and a transceiver unit. The transceiver unit receives a first broadcast signal, the frequency domain resources carrying the first broadcast signal being associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device. The processing unit receives first information based on the first broadcast signal, the first information indicating the frequency domain resources of the first broadcast signal.

[0189] In the ninth aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the third aspect and achieve the corresponding technical effects. For details, please refer to the third aspect, which will not be repeated here.

[0190] The tenth aspect of this application provides a communication device that performs the functions described in the fourth aspect above. For example, the communication device includes modules, units, or means corresponding to the operations involved in the fourth aspect. These modules, units, or means can be implemented in software, hardware, or a combination of both. For instance, the device includes a processing unit and a transceiver unit; the transceiver unit is used to transmit a first broadcast signal, the frequency domain resources carrying the first broadcast signal being associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device; the processing unit is used to transmit first information based on the first broadcast signal, the first information indicating the frequency domain resources of the first broadcast signal.

[0191] In the tenth aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the fourth aspect and achieve the corresponding technical effects. For details, please refer to the fourth aspect, which will not be repeated here.

[0192] The eleventh aspect of this application provides a communication device that performs the functions described in the fifth aspect above. For example, the communication device includes modules, units, or means corresponding to the operations involved in the fifth aspect. These modules, units, or means can be implemented in software, hardware, or a combination of both. For instance, the device includes a processing unit and a transceiver unit. The transceiver unit receives a second broadcast signal. The processing unit receives third information based on the second broadcast signal. The third information indicates L frequency domain resources corresponding to L broadcast signals, including the first broadcast signal. The frequency domain resource carrying the first broadcast signal is the first frequency domain resource among the L frequency domain resources, where L is an integer greater than or equal to 1. The first frequency domain resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device. The transceiver unit is also used to receive the first broadcast signal on the first frequency domain resource.

[0193] In the eleventh aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the fifth aspect and achieve the corresponding technical effects. For details, please refer to the fifth aspect, which will not be repeated here.

[0194] The twelfth aspect of this application provides a communication device that implements the functions described in the sixth aspect above. For example, the communication device includes modules, units, or means corresponding to the operations involved in the sixth aspect. These modules, units, or means can be implemented in software, hardware, or a combination of software and hardware. For instance, the device includes a processing unit and a transceiver unit; the transceiver unit is used to transmit a second broadcast signal; the processing unit is used to transmit third information based on the second broadcast signal; wherein the third information indicates L frequency domain resources corresponding to L broadcast signals, the L broadcast signals including the first broadcast signal, and the frequency domain resource carrying the first broadcast signal is the first frequency domain resource among the L frequency domain resources, where L is an integer greater than or equal to 1; wherein the first frequency domain resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device; the transceiver unit is used to transmit the first broadcast signal on the first frequency domain resource.

[0195] In the twelfth aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the sixth aspect and achieve the corresponding technical effects, all of which can be referred to the sixth aspect, and will not be repeated here.

[0196] The thirteenth aspect of this application provides a communication device including at least one processor for executing computer programs or instructions to enable the device to implement any one of the first to sixth aspects and any possible implementation thereof.

[0197] Optionally, the at least one processor is coupled to a memory for storing computer programs or instructions.

[0198] Optionally, the communication device includes the memory. Optionally, the memory is integrated with at least one processor.

[0199] The fourteenth aspect of this application provides a communication device including at least one logic circuit and an input / output interface; the logic circuit is used to perform the method as described in any one of the possible implementations of the first to sixth aspects.

[0200] In one possible implementation, the communication device is a chip or chip system.

[0201] The fifteenth aspect of this application provides a communication system, which includes the first communication device and the second communication device described above.

[0202] The sixteenth aspect of this application provides a computer-readable storage medium for storing one or more computer-executable instructions, which, when executed by a processor, perform a method as described in any possible implementation of any of the first to sixth aspects above.

[0203] The seventeenth aspect of this application provides a computer program product (or computer program) in which, when the computer program in the computer program product is executed by the processor, the processor executes any possible implementation of any of the first to sixth aspects of the method described above.

[0204] The eighteenth aspect of this application provides a chip or chip system including at least one processor for supporting a communication device in implementing any possible implementation of any of the first to sixth aspects described above. For example, the chip may be a baseband chip, a modem chip, a system-on-a-chip (SoC) chip containing a modem core, a system-in-package (SIP) chip, or a communication module, etc.

[0205] In one possible design, the chip or chip system may further include a memory for storing program instructions and data necessary for the communication device. The chip system may be composed of chips or may include chips and other discrete devices. Optionally, the chip system may also include interface circuitry that provides program instructions and / or data to the at least one processor.

[0206] A nineteenth aspect of this application provides a communication device including an interface circuit and one or more processors. For example, the one or more processors are coupled to a memory. The memory is used to store part or all of a computer program or instructions necessary for implementing the functions involved in any of the first to sixth aspects described above. Furthermore, the one or more processors are capable of executing the computer program or instructions, which, when executed, cause the communication device to implement the methods in any possible design or implementation of any of the first to sixth aspects described above. The interface circuit is used to implement communication functions within the communication device and / or communication functions between the communication device and other devices or components.

[0207] In one possible design, the processor is used to communicate with other devices or components through the interface circuit.

[0208] In one possible design, the communication device may also include the memory.

[0209] The aforementioned communication device may be a terminal, a communication module in a terminal, or a chip in a terminal that is responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module.

[0210] The technical effects of any of the design methods in aspects seven through nineteen can be found in the technical effects of the different design methods in aspects one through six above, and will not be repeated here. Attached Figure Description

[0211] Figure 1 is a schematic diagram of the communication system provided in this application;

[0212] Figures 2a to 2e are schematic diagrams of the communication process involved in this application;

[0213] Figure 3 is an interactive schematic diagram of the communication method provided in this application;

[0214] Figures 4a to 4i are schematic diagrams of the communication process involved in this application;

[0215] Figures 5 and 6 are interactive schematic diagrams of the communication method provided in this application;

[0216] Figures 7 to 10 are schematic diagrams of the communication device provided in this application. Detailed Implementation

[0217] First, some terms used in the embodiments of this application will be explained to facilitate understanding by those skilled in the art.

[0218] (1) Terminal device: can be a wireless terminal device that can receive network device scheduling and instruction information. The wireless terminal device can be a device that provides voice and / or data connectivity to the user, or a handheld device with wireless connection function, or other processing device connected to a wireless modem.

[0219] Terminal devices can communicate with one or more core networks or the Internet via a radio access network (RAN). Terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones), computers, and data cards. For example, they can be portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), tablets, and computers with wireless transceiver capabilities. Wireless terminal equipment can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station (MS), remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, subscriber station (SS), customer premises equipment (CPE), terminal, user equipment (UE), mobile terminal (MT), etc.

[0220] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices or smart wearable devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets, smart helmets, and smart jewelry for vital sign monitoring.

[0221] Terminals can also be drones, robots, devices in device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.

[0222] Furthermore, terminal devices can also be terminal devices in future communication systems evolving from fifth-generation (5G) communication systems, or terminal devices in future evolved public land mobile networks (PLMNs). For example, future communication networks can further expand the form and function of 5G communication terminals; future communication system terminals include, but are not limited to, vehicles, cellular network terminals (integrating satellite terminal functions), drones, and Internet of Things (IoT) devices.

[0223] In this embodiment, the terminal device can also obtain AI services provided by the network device. Optionally, the terminal device can also have AI processing capabilities.

[0224] (2) Network equipment: This can be equipment within a wireless network. For example, network equipment can be a RAN node (or device) that connects terminal devices to the wireless network, and can also be called a base station. Currently, some examples of RAN equipment include: base station, evolved NodeB (eNodeB), gNB (gNodeB) in 5G communication systems, transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), Node B (NB), home base station (e.g., home evolved Node B, or home Node B, HNB), base band unit (BBU), or wireless fidelity (Wi-Fi) access point (AP), etc. In addition, in a network architecture, network equipment can include centralized unit (CU) nodes, distributed unit (DU) nodes, or RAN equipment including CU nodes and DU nodes.

[0225] Optionally, RAN nodes can also be macro base stations, micro base stations, indoor stations, relay nodes, donor nodes, or radio controllers in cloud radio access network (CRAN) scenarios. RAN nodes can also be servers, wearable devices, vehicles, or in-vehicle equipment. For example, the access network equipment in V2X technology can be a roadside unit (RSU).

[0226] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, with each RAN node performing a portion of the base station's functions. For example, RAN nodes can be central units (CUs), distributed units (DUs), CU-control plane (CPs), CU-user plane (UPs), or radio units (RUs), etc. CUs and DUs can be separate entities or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio frequency equipment or radio frequency units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs).

[0227] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an open radio access network (O-RAN or ORAN) system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software modules and hardware modules.

[0228] Network devices can be other devices that provide wireless communication functions for terminal devices. The embodiments of this application do not limit the specific technology or form of the network device. For ease of description, the embodiments of this application are not limited.

[0229] In this embodiment of the application, the network device may also have network nodes with AI capabilities, which can provide AI services to terminals or other network devices. For example, it may be an AI node, computing power node, RAN node with AI capabilities, core network element with AI capabilities, etc. on the network side (access network or core network).

[0230] In this application embodiment, the device for implementing the function of the network device can be the network device itself, or it can be a device capable of supporting the network device in implementing that function, such as a chip system, which can be installed in the network device. In the technical solutions provided in this application embodiment, the example of a network device being used to implement the function of the network device is used to describe the technical solutions provided in this application embodiment.

[0231] (3) Configuration and Pre-configuration: In this application, both configuration and pre-configuration are used. Configuration refers to the network device / server sending configuration information or parameter values ​​to the terminal via messages or signaling, so that the terminal can determine communication parameters or resources for transmission based on these values ​​or information. Pre-configuration is similar to configuration; it can be parameter information or parameter values ​​pre-negotiated between the network device / server and the terminal device, parameter information or parameter values ​​specified by standard protocols for use by the base station / network device or terminal device, or parameter information or parameter values ​​pre-stored in the base station / server or terminal device. This application does not limit this.

[0232] Furthermore, these values ​​and parameters can be changed or updated.

[0233] (4) The terms "system" and "network" in the embodiments of this application can be used interchangeably. "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. And, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects and are not used to limit the order, sequence, priority or importance of multiple objects.

[0234] (5) In the embodiments of this application, "send" and "receive" indicate the direction of signal transmission. For example, "send information to XX" can be understood as the destination of the information being XX, which may include sending directly through the air interface or sending indirectly through the air interface by other units or modules. "Receive information from YY" can be understood as the source of the information being YY, which may include receiving directly from YY through the air interface or receiving indirectly from YY through the air interface by other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface.

[0235] In other words, sending and receiving can occur between devices, such as between network devices and terminal devices, or within a device, such as between components, modules, chips, software modules, or hardware modules within the device via buses, wiring, or interfaces.

[0236] It is understandable that information may undergo necessary processing, such as encoding and modulation, between the source and destination, but the destination can understand the valid information from the source. Similar statements in this application can be understood in a similar way, and will not be elaborated further.

[0237] (6) Physical Channel

[0238] The Physical Reception Link Control Channel (PRxCCH) is a physical layer control channel, functionally similar to the Physical Downlink Control Channel (PDCCH) in LTE and 5G. PRxCCH may be a new physical layer control channel introduced in future networks. However, future networks may still use PDCCH to represent the physical downlink control channel or physical transmit link control channel of terminal devices.

[0239] The Physical Reception Link Shared Channel (PRxSCH) is a physical layer data channel, functionally similar to the Physical Downlink Shared Channel (PDSCH) in LTE and 5G. PRxSCH may be a new physical layer data channel introduced in future networks. However, future communications, such as future networks, may still use PDSCH to represent the physical downlink data channel or physical reception link data channel of terminal devices.

[0240] The Physical Transmission Link Control Channel (PTxCCH) is a physical layer control channel, functionally similar to the Physical Uplink Control Channel (PUCCH) in LTE and 5G. PTxCCH may be a new physical layer control channel introduced in future networks. However, future communications, such as future networks, may still use PUCCH to represent the physical uplink control channel or physical transmission link control channel of terminal devices.

[0241] The Physical Transmission Link Shared Channel (PTxSCH) is a physical layer data channel, functionally similar to the Physical Uplink Shared Channel (PUSCH) in LTE and 5G. PTxSCH may be a new physical layer data channel introduced in future networks. However, future communications, such as future networks, may still use PUSCH to represent the physical uplink data channel or physical receive link data channel of terminal devices.

[0242] Optionally, from the perspective of the terminal device, downlink can be described as receiving; and from the perspective of the terminal device, uplink can be described as sending.

[0243] (7) In the embodiments of this application, "instruction" may include direct instruction and indirect instruction, as well as explicit instruction and implicit instruction. The information indicated by a certain piece of information (as described below, the instruction information) is called the information to be instructed. In the specific implementation process, there are many ways to indicate the information to be instructed, such as, but not limited to, directly indicating the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly indicate the information to be instructed by indicating other information, where there is an association between the other information and the information to be instructed; or it can only indicate a part of the information to be instructed, while the other parts of the information to be instructed are known or pre-agreed upon. For example, the instruction can be implemented by using a pre-agreed (e.g., protocol predefined) arrangement order of various information, thereby reducing the instruction overhead to a certain extent. This application does not limit the specific method of instruction. It is understood that for the sender of the instruction information, the instruction information can be used to indicate the information to be instructed; for the receiver of the instruction information, the instruction information can be used to determine the information to be instructed.

[0244] In this application, unless otherwise specified, the same or similar parts between the various embodiments can be referred to each other. In the various embodiments of this application, and the various methods / designs / implementations within each embodiment, unless otherwise specified or logically conflicting, the terminology and / or descriptions between different embodiments and between the various methods / designs / implementations within each embodiment are consistent and can be mutually referenced. The technical features in different embodiments and the various methods / designs / implementations within each embodiment can be combined to form new embodiments, methods, or implementations based on their inherent logical relationships. The following descriptions of the embodiments of this application do not constitute a limitation on the scope of protection of this application.

[0245] This application can be applied to long-term evolution (LTE) systems, new radio (NR) systems, or communication systems evolving beyond 5G. These communication systems include at least one network device and / or at least one terminal device.

[0246] Please refer to Figure 1, which is a schematic diagram of the architecture of the communication system 10 used in the embodiments of this application. As shown in Figure 1, the communication system includes a RAN 100 and a core network 200. Optionally, the communication system 10 may also include an Internet 300. The RAN 100 includes at least one RAN node (110a and 110b in Figure 1, collectively referred to as 110), and may also include at least one terminal device (120a-120j in Figure 1, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). The terminal device 120 is wirelessly connected to the RAN node 110, and the RAN node 110 is wirelessly or wiredly connected to the core network 200. The core network device in the core network 200 and the RAN node 110 in the RAN 100 can be independent and different physical devices, or they can be the same physical device integrating the logical functions of the core network device and the logical functions of the RAN node. Terminal devices and RAN nodes can be interconnected via wired or wireless means.

[0247] RAN 100 can be an evolved universal terrestrial radio access (E-UTRA) system, an NR system, or a future radio access system as defined in the 3rd generation partnership project (3GPP). RAN 100 can also include two or more of the above-mentioned different radio access systems. RAN 100 can also be an open RAN (O-RAN).

[0248] For ease of description, the following text uses a base station as an example of a RAN node.

[0249] Base stations and terminal equipment can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the base stations and terminal equipment.

[0250] The roles of base stations and terminal devices can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. For terminal devices 120j that access the wireless access network 100 through 120i, terminal device 120i is a base station; however, for base station 110a, 120i is a terminal device, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol. In this case, relative to 110a, 120i is also a base station. Therefore, both base stations and terminal devices can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be called communication devices with base station functions, and 120a-120j in Figure 1 can be called communication devices with terminal device functions.

[0251] In the embodiments of this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal device can be executed by modules (such as chips or modems) within the terminal device, or by a device that includes terminal device functions.

[0252] In wireless communication systems (such as the system shown in Figure 1), communication devices may involve various communication processes, which will be introduced below through some implementation examples.

[0253] A. Wireless communication resources.

[0254] Wireless communication resources generally include time-frequency resources, and the following will take frequency domain resources as an example.

[0255] 5G NR introduces the concept of Numerology, which includes sub-carrier spacing (SCS) and corresponding parameters such as symbol length and cycle prefix (CP) length. Because there is a mapping relationship between SCS and symbol length / CP length, SCS is often used instead of Numerology in some literature.

[0256] For example, the parameters involved in Numerology are shown in Table 1.

[0257] Table 1

[0258] In Table 1, μ represents the subcarrier spacing index, or μ represents the parameter set numberology, CP length includes the normal CP length and the extended CP length, and FR represents the frequency range (FR).

[0259] A resource element (RE) can be the smallest physical layer resource in a communication system (such as 5G NR or future communication systems), which is a subcarrier in the frequency domain and an OFDM symbol in the time domain.

[0260] A resource block (RB) can be the basic unit of channel resource allocation in the frequency domain for a communication system (such as 5G NR or future communication systems). For example, an RB can contain 12 subcarriers in the frequency domain. Optionally, since the subcarrier spacing is variable, the actual bandwidth of an RB is also variable.

[0261] A resource grid (RG) is a collection of time-frequency resources. Uplink and downlink can each define their own RG.

[0262] A common resource block (CRB) can be understood as a general term for common resource blocks (RBs), numbered starting from 0. The center frequency point of subcarrier number 0 in CRB0 is point A.

[0263] A physical resource block (PRB) is a general term for a type of resource block (RB) on physical resources. It is also numbered starting from 0 and is the basic unit of data channel scheduling.

[0264] A resource block group (RBG) is a combination of several PRBs within a bandwidth portion (BWP). They are also numbered starting from number 0 and are the basic unit of data channel scheduling.

[0265] A resource element group (REG) is the basic unit of control channel resources. For example, one REG is 12 subcarriers in the frequency domain, which is the width of one RB, and one OFDM symbol in the time domain.

[0266] Optionally, future networks can define multiple subcarrier spacings, not limited to the SCS in 5G. A time slot can include one or more symbols, and an RB can include one or more subcarriers, etc.

[0267] B. Carrier aggregation (CA).

[0268] Generally, carrier aggregation provides greater bandwidth to a single terminal device by aggregating multiple component carriers (CCs), thereby significantly improving peak rates.

[0269] Figure 2a shows an example of CA implementation. In the CA scenario shown in Figure 2a, one or more network devices (only one network device is shown as an example in the figure) can configure n carriers (n is an integer greater than 1) for the terminal, and each carrier can be regarded as a cell. That is, there can be n carriers providing services to the terminal device, such as primary component carriers (PCC) and secondary component carriers (SCC), which means that the terminal device can be configured with n serving cells for communication.

[0270] For example, in a cell, the uplink and downlink carriers are in a fixed pairing relationship, with SSB and RAR on the same carrier, and RACH and SSB on associated carriers.

[0271] C. Introduction to background knowledge related to the random access channel (RACH).

[0272] Terminal devices can complete uplink synchronization with the base station through a random access (RA) procedure and establish an RRC connection with the base station through the same procedure. Once the RRC connection is established, uplink and downlink service data transmission can commence. Furthermore, before initiating uplink random access, the terminal device can detect and receive downlink synchronization signals from the base station to complete downlink time and frequency synchronization. These downlink synchronization signals typically include a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). In NR, the PSS and SSS are carried within the SSB.

[0273] The interactions involved in the C-1 random access procedure.

[0274] Currently, in NR, there are two types of random access procedures: Type-1 RA procedure and Type-2 RA procedure. Type-1 RA procedure is also known as 4-step RA procedure, and Type-2 RA procedure is also known as 2-step RA procedure.

[0275] As an example, as shown in Figure 2b, the following will introduce the contention-based random access procedure with the terminal device being UE and the network device being gNB.

[0276] Msg1 transmission: Based on the system message received from the network device and the index of the selected SSB, the terminal device randomly selects a RACH occasion (RO) associated with that SSB index (where RO can be understood as the time-frequency resource used by the terminal device for random access; the network device pre-configures the association between RO and SSB index) to send the preamble (Msg1). The UE selects a preamble sequence from the selected RO (for example, a maximum of 64 preambles can be transmitted simultaneously on one RO, and the UE selects one of the 64 preamble sequences to send). Then, the terminal device sends the preamble sequence to the network device, carried by the physical random access channel (PRACH).

[0277] Msg2 Transmission: After receiving the Preamble, the network device sends a Random Access Response (RAR) to the terminal device. The RAR (e.g., Msg2) includes scheduling information allocated to Msg3 (i.e., RAR UL grant information). After sending Msg1, the terminal device initiates a Random Access Response window, monitoring the network-sent Msg2 within this window. If the terminal device successfully detects its own RAR, random access is successful. The terminal device continues sending Msg3 according to the RAR's instructions. The main function of Msg3 is to send an RRC connection establishment request. If the terminal device does not receive its own RAR, random access fails. The terminal device re-initiates the random access process according to the backoff parameters indicated by the base station until the maximum number of random access attempts is reached.

[0278] Msg3 transmission: Msg3 is transmitted on the time-frequency resources specified by Msg2 and carried by the PUSCH channel.

[0279] Msg4 transmission: Msg4 is mainly used for conflict resolution. When multiple terminal devices access the network simultaneously, it is necessary to determine which terminal device will be selected for random access. Specifically, after sending Msg3, the terminal device monitors and receives Msg4 from the network side. Msg4 carries a conflict resolution identifier and air interface parameter configurations for the terminal device. If the terminal device successfully receives Msg4, the random access is successful; otherwise, the random access fails. If successful, the terminal device continues to send Msg5, which is mainly used to send the RRC establishment completion command. If it fails, the terminal device re-initiates the random access process according to the backoff parameters indicated by the base station until the maximum number of random access attempts is reached.

[0280] As an example, as shown in Figure 2c, taking CBRA as an example, the Type-2 RA process combines the first four steps of the Type-1 RA process into two steps. The terminal device simultaneously sends Msg1 and Msg3, referred to as MsgA. After detecting MsgA, the base station sends feedback and sends MsgB.

[0281] Furthermore, during random access, the UE can transmit a preamble sequence on the random access occasion (RO). An RO can be considered a time-frequency resource for transmitting the preamble, and multiple preamble sequences can be transmitted using code division multiplexing on a single RO. An NR cell supports multiple ROs. NR introduces multi-beam operation; therefore, NR's random access process is based on beam transmission. For UEs in the initial access phase, transmission is primarily based on SSB beams. For UEs in connected state, it can also be based on channel state information reference signal (CSI-RS) beams. NR can support base stations transmitting SSBs in multiple beam directions; for example, in FR1, a maximum of eight SSBs can be supported. The UE can select one of the SSBs and use that SSB beam to transmit the PRACH.

[0282] For example, a network device can configure PRACH in the uplink (UL) timeslot via broadcast messages, after which the terminal device can use the PRACH on the UL timeslot for random access.

[0283] As an example, as shown in Figure 2d, the vertical direction represents the frequency domain, and each square is one RO. The ROs are arranged in four rows starting from the frequency domain position specified by the Message 1 FrequencyStart parameter (msg1-FrequencyStart). (The number of ROs is determined by the frequency division multiplexing parameter (e.g., msg1-FDM4)). During Msg1 transmission, the UE can select an RO to transmit the preamble sequence based on the index of the selected SSB. Therefore, in the NR standard, in addition to specifying the PRACH position, network devices can also specify the mapping relationship between ROs and SSBs (e.g., one SSB index can be associated with one RB, one SSB index can be associated with multiple ROs, or multiple SSB indices can be associated with one RO). For example, a network device can configure the mapping relationship from N SSBs to one RO through higher-layer parameters. When N equals 1, one SSB is associated with one RO; when N is less than 1, one SSB is associated with 1 / N ROs; and when N is greater than 1, N SSBs are associated with one RO (one SSB is associated with 1 / N ROs).

[0284] As an example, as shown in Figure 2e, when N = 1 / 2, one SSB is associated with two ROs (e.g., SSB0 in the figure is associated with RO 0 and RO 1). When N = 2, one RO is associated with two SSBs (the two SSBs on one RO are associated with different preambles, e.g., SSB0 and SSB1 in the figure are associated with the same RO 2). Therefore, when one SSB index is associated with multiple ROs, the UE selects one of the multiple ROs and chooses the preamble sequence to be transmitted on that RO. After determining the association between ROs and SSBs, the mapping from RO to SSB can begin. For example, the order is frequency domain mapping first, then time domain mapping. Alternatively, in the time domain mapping process, it can be done first in the same slot, then within the same frame, and finally across different frames.

[0285] The random access preamble sequence in C-2.PRACH.

[0286] Currently, terminal devices can use the Zadoff-Chu (ZC) sequence as the uplink synchronization root sequence for the PRACH channel. This is because ZC has zero autocorrelation and good cross-correlation, characteristics that make it well-suited for random access. The ZC sequence transmitted on the PRACH channel is also known as the PRACH Preamble.

[0287] As an example, during the generation of the random access preamble, the terminal device can use the physical random access channel root sequence index (prach-RootSequenceIndex) configured by the network device to generate a ZC root sequence. This ZC root sequence can be cyclically shifted to generate 64 different preambles, and the preamble subsequently sent by the terminal device can be one of these 64 different preambles.

[0288] For example, for a specific cell, if 64 preambles are generated from the same root sequence, there will be no interference between different preambles due to the zero autocorrelation of the ZC sequence. Limited by the root sequence length and cyclic shift length, the 64 preambles may be generated from multiple root sequences. Due to the good cross-correlation of the ZC sequence, interference between different preambles is also very low. This also raises another requirement: adjacent cells need to use different root sequences; otherwise, they will cause strong interference.

[0289] Optionally, the first root sequence index of each cell is indicated by the RRC parameter prach-RootSequenceIndex. If the root sequence corresponding to the root sequence index generates less than 64 Preambles through cyclic shifting, then the root sequence corresponding to the next logical root sequence index is used to continue generating Preambles until all 64 Preambles are generated.

[0290] Time-frequency domain resources of C-3.PRACH.

[0291] Currently, the time-domain location of the PRACH can be determined by higher-layer parameters. For example, these parameters include the Physical Random Access Channel Configuration Index (prachConfigurationIndex). The prachConfigurationIndex can be sent to the UE via an SIB1 message. Additionally, each SSB can correspond to a different preamble index. Therefore, before selecting the random access preamble, the terminal device can first select the SSB, and then determine the Preamble Index based on the SSB before sending the data.

[0292] For example, the time-domain location of PRACH is determined by time-domain information such as frame number, subframe number, start symbol, PRACH time slot, and PRACH transmission opportunity (Occasion) within the time slot.

[0293] As can be seen from the above process, in a communication system (as shown in Figure 1), taking the communication process between a network device and a terminal device as an example, the terminal device can receive broadcast signals (e.g., synchronization signals) from the network device to implement a random access process (e.g., the interaction process in Figure 2b or Figure 2c). Furthermore, after random access, the network device can configure or indicate resources matching the capability information reported by the terminal device, enabling the terminal device to transmit data based on those resources. However, in the above process, the terminal device can determine the initial bandwidth utilization (BWP) based on the broadcast signal and then transmit data based on that initial BWP after the random access process. Only after the interaction of capability information between the terminal device and the network device can the network device schedule or indicate bandwidth resources for data transmission based on the terminal device's capability information. This approach will affect communication performance.

[0294] On the one hand, terminal devices need to perform random access based on broadcast signals to access the network before they can indicate the capabilities they support through the interaction of capability information. This approach will inevitably lead to increased communication latency.

[0295] On the other hand, after the random access process and before the capability information exchange, the terminal device can only transmit data based on the initial BWP, which also leads to limited data transmission performance.

[0296] Therefore, how to improve communication performance during random access is a technical problem that urgently needs to be solved.

[0297] Figure 3 is a schematic diagram of an implementation of the communication method provided in this application. In Figure 3 and the following Figures 5 and 6, the method is illustrated using a first communication device and other communication devices (such as a second communication device) as examples of the execution subjects of this interactive illustration. However, this application does not limit the execution subjects of this interactive illustration. For example, the communication device can be a communication equipment (such as a terminal device or network device), or a chip, baseband chip, modem chip, SoC chip (such as an SoC chip containing a modem core), SIP chip, communication module, chip system, processor, logic module, or software, etc., within the communication equipment.

[0298] As an example, the first communication device can be a terminal device and the second communication device can be a network device. Optionally, the network device can be an access network device or an ORAN device (including at least one of O-CU, O-DU, and O-RU). Optionally, the terminal device and the network device can also be virtual devices.

[0299] As another example, both the first and second communication devices are terminal devices.

[0300] S301. The second communication device sends the first information.

[0301] Accordingly, the first communication device receives the first information. This first information is used to determine a first random access resource among N random access resources, where N is an integer greater than 1.

[0302] Optionally, the first information used to determine random access resources may be broadcast information, such as a master information block, a system information block (SIB) (e.g., SIB1), or other information / message / signaling names defined by the network in the future.

[0303] In one possible implementation, the N random access resources satisfy at least one of the following:

[0304] The different types of communication devices associated with the different random access resources among these N random access resources; or,

[0305] The communication devices associated with different random access resources among these N random access resources have different capabilities; or,

[0306] The different categories of communication devices associated with the different random access resources among these N random access resources are different.

[0307] Optionally, the different types / capabilities / categories of communication devices associated with different random access resources among the aforementioned N random access resources refer to at least two different random access resources among the N random access resources having different types / capabilities / categories of communication devices, or any two different random access resources among the N random access resources having different types / capabilities / categories of communication devices.

[0308] In the above process, the first information received by the first communication device can be used to indicate or configure N random access resources, and at least one of the types, capabilities, or categories of communication devices associated with different random access resources among the N random access resources is different. In this way, communication devices of different types, capabilities, or categories can send random access requests (e.g., the second information described below) based on different random access resources among the N random access resources to achieve the initial access process, so that the recipient of the random access request can identify at least one of the types, capabilities, or categories of communication devices during the initial access process.

[0309] As an example of implementation, the communication device types involved in this application include at least one of the following: enhanced mobile broadband (eMBB), reduced capabilities (Redcap), ultra-reliable and low-latency communication (URLLC), narrowband internet of things (NB-IoT), or machine-type communication (MTC). Optionally, the types of communication devices involved in this application can be replaced with other descriptions, such as the service type of the communication device, or the service characteristics supported by the communication device.

[0310] For example, eMBB can refer to further improvements in user experience and other performance aspects based on existing mobile broadband service scenarios. eMBB includes high-bandwidth mobile broadband services such as 3D rendering, 3D games, and ultra-high-definition video.

[0311] For example, Redcap can refer to a new type of 5G NR standard designed to support low to medium data rates and low-complexity application scenarios. Redcap user equipment, for instance, reduces cost and power consumption by decreasing hardware and software complexity, while still providing sufficient performance to meet the needs of specific IoT and industrial applications.

[0312] For example, URLLC can possess at least one of the characteristics of high reliability, low latency, and extremely high availability. URLLC includes various scenarios and applications such as industrial applications and control, traffic safety and control, remote manufacturing, remote training, and remote surgery. Among these, URLLC has great potential in autonomous driving. Applicable scenarios for URLLC can include scenarios requiring low-latency, high-reliability connections for business transmission, such as autonomous driving and industrial automation.

[0313] For example, NB-IoT can possess at least one of the following characteristics: wide coverage, numerous connections, low data rate, low cost, low power consumption, and superior architecture. Examples of NB-IoT communication devices include smart water meters, smart parking systems, smart pet trackers, smart bicycles, smart smoke detectors, smart toilets, smart vending machines, and so on.

[0314] For example, MTC features low cost and / or enhanced coverage. MTC can include massive machine-type communications (massive MTC), while mMTC can refer to large-scale Internet of Things (IoT) services.

[0315] As an implementation example, the communication device involved in this application includes at least one of the following: radio frequency bandwidth capability, carrier aggregation capability, data transmission capability, multiple input multiple output (MIMO) capability, and receiver processing capability. Optionally, the capabilities of the communication device involved in this application can be replaced with other descriptions, such as the communication capability of the communication device, the signal processing capability of the communication device, or the capabilities supported by the communication device.

[0316] For example, radio frequency bandwidth capability refers to the maximum channel bandwidth capability supported by the communication device. For instance, radio frequency bandwidth capability can be defined as supporting a bandwidth of B MHz, where B is a positive integer. Exemplarily, radio frequency bandwidth capability may include at least one of the following: supporting radio frequency bandwidths of 10 MHz, 20 MHz, 50 MHz, 100 MHz, 200 MHz, or 400 MHz.

[0317] For example, carrier aggregation capability refers to the ability of a communication device to support the maximum number of carriers. Carrier aggregation capability may include at least one of the following: single carrier capability, two-carrier aggregation capability, four-carrier aggregation capability, multi-carrier aggregation capability within the same frequency band, multi-carrier aggregation capability in different frequency bands, low-frequency and high-frequency aggregation capability, or FR1 and FR2 aggregation capability, etc.

[0318] For example, data transmission capability may include at least one of the following: high-speed transmission capability, medium-speed transmission capability, or low-speed transmission capability, etc.

[0319] Optionally, Low Rate is defined as: Low rate typically refers to scenarios with low data transmission rates, generally between tens of Kbps and hundreds of Kbps. Medium Rate is defined as: Medium rate typically refers to data transmission rates between hundreds of Kbps and several Mbps. High Rate is defined as: High rate typically refers to data transmission rates between several Mbps and tens of Gbps.

[0320] Optionally, the speed ranges are as follows: low speed: 0.1Kbps-1Mbps; medium speed: 1Mbps-100Mbps; high speed: 100Mbps-10Gbps and above.

[0321] For example, MIMO capability may include at least one of the following: single-antenna transmission, single-antenna reception; dual-antenna transmission, dual-antenna reception; four-antenna transmission, four-antenna reception; eight-antenna transmission, eight-antenna reception; maximum number of transmitted data streams; or maximum number of received data streams, etc.

[0322] For example, receiver processing capabilities may include at least one of the following: PDSCH processing capability, PUSCH processing capability, channel state information (CSI) processing capability, interference cancellation capability, or iterative processing capability, etc.

[0323] For example, PUSCH processing capacity can be referred to as PUSCH processing time, PUSCH preparation time, or transmission preparation time; PDSCH processing capacity can be referred to as PDSCH preparation time, PDSCH decoding time, or reception preparation time.

[0324] For example, PDSCH processing capacity can refer to the time from when the terminal receives PDCCH to when the terminal receives PDSCH, where PDCCH carries DCI, and DCI is used to schedule PUSCH.

[0325] For example, PDSCH processing capability can refer to the time from when the terminal receives the PDSCH to when the terminal sends feedback information.

[0326] For example, CSI processing capability can refer to the time from when the terminal receives a CSI reporting instruction to when the terminal responds with a CSI, or the CSI calculation time. The CSI reporting instruction is used to instruct the terminal to report a CSI, and can be triggered by DCI.

[0327] For example, interference cancellation capability can refer to whether the receiver supports successive interference cancellation (SIC).

[0328] For example, iterative processing capability can refer to how a receiver improves signal detection and decoding performance through multiple iterations. Iterative processing capability can also refer to the number of iterations supported.

[0329] For example, the PUSCH processing capability may include at least one of the following: PUSCH processing capability 1, PUSCH processing capability 2, PUSCH processing capability 3 and PUSCH processing capability 4.

[0330] For example, Table A represents PUSCH processing capability 1, Table B represents PUSCH processing capability 2, Table C represents PUSCH processing capability 3, and Table D represents PUSCH processing capability 4. μ in Tables A, B, C, and D represents the subcarrier spacing index, or μ represents the parameter set (numerology). For example, the values ​​of μ can be found in Table 1.

[0331] PUSCH processing capability 3 can refer to enhanced processing power. It can also be called ultra-short latency processing capability, ultra-low latency processing capability, enhanced processing capability, ultra-low latency processing timing, or ultra-short latency processing timing. For example, processing time less than 5 symbols. It could also be a processing time in the nanosecond range.

[0332] Table A

[0333] Table B

[0334] Table C

[0335] PUSCH processing capability 4 can refer to a relatively weak processing capability. For example, PUSCH processing capability 4 can also be called ultra-long latency processing capability, ultra-high latency processing capability, reduced processing capability, ultra-long latency processing timing or ultra-high latency processing timing, relaxed processing capability, or low-cost processing capability. For example, the processing time is greater than 20 symbols. It could also be a processing time in the millisecond range.

[0336] Table D

[0337] For example, the PDSCH processing capability may include at least one of the following: PDSCH processing capability 1, PDSCH processing capability 2, PDSCH processing capability 3, and PDSCH processing capability 4.

[0338] For example, Table E represents PDSCH processing capability 1, Table F represents PDSCH processing capability 2, Table G represents PDSCH processing capability 3, and Table H represents PDSCH processing capability 4. μ in Tables E, F, G, and H represents subcarrier spacing configuration information; for example, the value of μ can be found in Table 1.

[0339] Table E

[0340] Table F

[0341] PDSCH processing capability 3 can refer to enhanced processing power. It can also be called ultra-short latency processing capability, ultra-low latency processing capability, enhanced processing capability, ultra-low latency processing timing, or ultra-short latency processing timing, etc. For example, processing time less than 3 symbols. It could also be a processing time in the nanosecond range, etc.

[0342] Table G

[0343] PDSCH processing capability 4 can refer to a relatively weak processing capability. It can also be called ultra-long latency processing capability, ultra-high latency processing capability, reduced processing capability, ultra-long latency processing timing or ultra-high latency processing timing, relaxed processing capability, or low-cost processing capability. For example, processing time greater than 20 symbols. It could also be a processing time in the millisecond range.

[0344] Table H

[0345] For example, CSI processing capability may include at least one of the following: CSI processing capability 1, CSI processing capability 2, CSI processing capability 3, and CSI processing capability 4.

[0346] For example, CSI processing capability 1 and CSI processing capability 2 can be determined according to existing protocols, Table K is CSI processing capability 3, and Table L is CSI processing capability 4. μ in Tables I, J, K, and L represents subcarrier spacing configuration information; for example, the value of μ can be found in Table 1.

[0347] CSI processing capability 3 can refer to a significantly enhanced processing capability. It can also be described as ultra-short latency processing capability, ultra-low latency processing capability, enhanced processing capability, ultra-low latency processing timing, or ultra-short latency processing timing. For example, CSI processing capability 3 could mean a CSI processing time of less than 10 symbols. Alternatively, it could mean a CSI processing time on the order of nanoseconds (ns).

[0348] Table I

[0349] Z1 and Z'1 represent the computation time under different scenarios. For specific definitions, please refer to NR protocol 38.214, which will not be repeated here. CSI processing capability 4 can refer to a weaker processing capability. CSI processing capability 4 can also be called ultra-long latency processing capability, ultra-high latency processing capability, reduced processing capability, ultra-long latency processing timing or ultra-high latency processing timing, relaxed processing capability, or low-cost processing capability.

[0350] For example, CSI processing capability 4 could refer to a CSI processing time greater than 36 symbols. Alternatively, CSI processing capability 4 could refer to a CSI processing time in the millisecond (ms) range.

[0351] Table J

[0352] As an implementation example, the categories of communication devices involved in this application include at least one of the following: Category 1 User Equipment (UE), Category 2 User Equipment (UE), Category M1 User Equipment (UE), Category M2 User Equipment (UE), Category NB1 User Equipment (UE), Category NB2 User Equipment (UE), or Reduced Capability User Equipment (Redcap UE). Optionally, the category of the communication device can be replaced with other descriptions, such as the UE category of the communication device, the scenario category to which the communication device is applicable, or the service category supported by the communication device.

[0353] Optionally, the category of the communication device can be determined based on at least one of the following: transmission rate, number of supported antennas, supported modulation scheme, maximum channel bandwidth, or supported carrier aggregation capability, etc.

[0354] For example, a category 1 UE can indicate that the terminal meets one or more of the following criteria:

[0355] The downlink (DL) maximum transmission rate is 100 Mbps, supports one antenna, and uses quadrature phase shift keying (QPSK), quadrature amplitude modulation (QAM), or 64QAM modulation. The uplink (UL) maximum transmission rate is 50 Mbps. It also supports one antenna and uses QPSK and 16QAM modulation. Application scenarios: Suitable for basic mobile broadband applications.

[0356] For example, a Category 2 UE can indicate one or more of the following information about the terminal: DL: Maximum transmission rate of 150Mbps. Supports 2 antennas. Modulation methods: QPSK, 16QAM, 64QAM. UL: Maximum transmission rate of 75Mbps. Supports 1 antenna. Modulation methods: QPSK, 16QAM. Application scenario: Suitable for mobile broadband applications with medium data rates.

[0357] For example, Category M1 UE can indicate one or more of the following information about the terminal: DL: Maximum transmission rate of 250kbps. Supports 1 antenna. Modulation method: QPSK. UL: Maximum transmission rate of 62.5kbps. Supports 1 antenna. Modulation method: Binary phase shift keying (BPSK), QPSK. Application scenarios: Suitable for low-power, low-data-rate IoT devices, such as smart meters, environmental monitoring equipment, etc. For example, Category M1 can be a user equipment category for low-power wide-area (LPWA) applications, mainly used in narrowband IoT (NB-IoT) and enhanced machine-type communication (eMTC) scenarios.

[0358] For example, the category M2 UE can indicate one or more of the following information about the terminal: DL: Maximum transmission rate of 1001 kbps. Supports 1 antenna. Modulation method: QPSK. UL: Maximum transmission rate of 125 kilobits per second (kbps). Supports 1 antenna. Modulation method: BPSK, QPSK. Application scenarios: Suitable for low-power, low-data-rate IoT devices, such as smart meters, environmental monitoring equipment, etc.

[0359] For example, the category NB1 UE can indicate one or more of the following information about the terminal: DL: Maximum transmission rate of 85kbps. Supports 1 antenna. Modulation method: QPSK. UL: Maximum transmission rate of 125kbps. Application scenarios: Suitable for low-power, low-data-rate IoT devices, such as smart meters, environmental monitoring equipment, asset tracking, etc.

[0360] For example, a Category NB2 UE can indicate one or more of the following information about the terminal: DL: Maximum transmission rate of 552kbps. Supports 1 antenna. Modulation method: QPSK. UL: Maximum transmission rate of 317kbps. Application scenarios: Suitable for low-power, low-data-rate IoT devices, such as smart meters, environmental monitoring equipment, asset tracking, etc. For example, Category NB1 and Category NB2 can be user equipment categories specifically designed for narrowband internet of things (NB-IoT).

[0361] For example, the Redcap UE can indicate one or more of the following information for the terminal: DL: Maximum transmission rate of 100Mbps. Supports 1 or 2 antennas. Modulation method: QPSK, 16QAM, 64QAM. UL: Maximum transmission rate of 50Mbps. Supports 1 antenna. Modulation method: QPSK, 16QAM. Application scenarios: Suitable for low-power, low-to-medium data rate IoT devices, such as smart meters, environmental monitoring equipment, wearable devices, etc.

[0362] As described above, at least one of the communication device type, capability, and category can be different among the N random access resources. The following will describe some possible implementation examples.

[0363] Example A: Different communication device types correspond to different random access resources among N random access resources. For example, there is a correspondence between random access resources and communication device types.

[0364] Example B: Different communication devices have different capabilities among the N random access resources. For example, there is a correspondence between random access resources and communication device capabilities.

[0365] Example C: Different communication device categories correspond to different random access resources among the N random access resources. For example, there is a correspondence between random access resources and communication device categories.

[0366] Example D: Different random access resources among the N random access resources correspond to different communication device types and / or communication device capabilities. For example, there is a correspondence between random access resources and communication device types and capabilities.

[0367] Example E: Different random access resources among the N random access resources correspond to different communication device capabilities and / or communication device categories. For example, there is a correspondence between random access resources and communication device capabilities and categories.

[0368] Example F: Different random access resources among the N random access resources correspond to different communication device categories and / or communication device types. For example, there is a correspondence between random access resources and communication device categories and types.

[0369] Example G: Among the N random access resources, at least one of the following is different: communication device type, communication device capability, and communication device category. For example, there is a correspondence between random access resources and communication device type, communication device capability, and communication device category.

[0370] In Examples A to F, taking N random access resources as examples, we can use 3 random access resources as an example. These 3 random access resources can be denoted as Random Access Resource_1, Random Access Resource_2, and Random Access Resource_3. The following will illustrate this with reference to Tables 2 to 10-2.

[0371] At least one row in Table 2 represents a possible implementation example of Example A.

[0372] Table 2

[0373] Among them, communication device type_1, communication device type_2, and communication device type_3 are at least one of the above-mentioned communication device types.

[0374] As shown in Table 3, at least one row represents a possible implementation example of Example A.

[0375] Table 3

[0376] In the examples shown in Table 3, a communication device of type eMBB can initiate random access based on random access resource_1, a communication device of type Redcap can initiate random access based on random access resource_2, and a communication device of type MTC can initiate random access based on random access resource_3.

[0377] At least one row in Table 4 represents a possible implementation example of Example B.

[0378] Table 4

[0379] Among them, capability_1, capability_2, and capability_3 are at least one of the capabilities of the aforementioned communication device.

[0380] In the examples shown in Table 4, a communication device with capability_1 can initiate random access based on random access resource_1, a communication device with capability_2 can initiate random access based on random access resource_2, and a communication device with capability_3 can initiate random access based on random access resource_3.

[0381] At least one row in Table 5 represents a possible implementation example of Example B.

[0382] Table 5

[0383] For example, in Table 5, we take the capabilities in Table 4 as examples of carrier aggregation capabilities. In Table 5, carrier aggregation capability_1 indicates the ability to communicate on one aggregated carrier, and communication devices with this capability can initiate random access based on random access resource_1; carrier aggregation capability_2 indicates the ability to communicate on two aggregated carriers, and communication devices with this capability can initiate random access based on random access resource_2; carrier aggregation capability_3 indicates the ability to communicate on four aggregated carriers, and communication devices with this capability can initiate random access based on random access resource_3.

[0384] At least one row in Table 6 represents a possible implementation example of Example C.

[0385] Table 6

[0386] Among them, communication device category_1, communication device category_2, and communication device category_3 are at least one of the above communication device categories.

[0387] Table 7 shows one possible implementation example of Example C.

[0388] Table 7

[0389] In the examples shown in Table 7, a communication device of category 1 UE can initiate random access based on random access resource_1, a communication device of category M1 UE can initiate random access based on random access resource_2, and a communication device of category NB1 UE can initiate random access based on random access resource_3.

[0390] At least one row in Table 8-1 is a possible implementation example of Example D.

[0391] Table 8-1

[0392] Wherein, communication device category_1 and communication device category_2 are at least one of the aforementioned communication device categories. Capability_1, capability_2, and capability_3 are at least one of the aforementioned communication device capabilities.

[0393] At least one row in Table 8-2 is a possible implementation example of Example D.

[0394] Table 8-2

[0395] In the examples shown in Table 8-2, taking carrier aggregation capability as an example, a communication device of type eMBB with carrier aggregation capability_1 can initiate random access based on random access resource_1, a communication device of type Redcap with carrier aggregation capability_1 can initiate random access based on random access resource_2, and a communication device of type Redcap with carrier aggregation capability_2 can initiate random access based on random access resource_3.

[0396] At least one row in Table 9-1 represents a possible implementation example of Example E.

[0397] Table 9-1

[0398] Wherein, communication device category_1 and communication device category_2 are at least one of the aforementioned communication device categories. Capability_1 and capability_2 are at least one of the aforementioned communication device capabilities.

[0399] At least one row in Table 9-2 represents a possible implementation example of Example E.

[0400] Table 9-2

[0401] In the examples shown in Table 9-2, taking carrier aggregation capability as an example, a UE's communication device with carrier aggregation capability_1 and category 1 can initiate random access based on random access resource_1; a UE's communication device with carrier aggregation capability_2 and category 1 can initiate random access based on random access resource_2; and a UE's communication device with carrier aggregation capability_2 and category 2 can initiate random access based on random access resource_3.

[0402] At least one row in Table 10-1 represents a possible implementation example of Example E.

[0403] Table 10-1

[0404] Wherein, communication device category_1 and communication device category_2 are at least one of the aforementioned communication device categories. Communication device type_1 and communication device type_2 are at least one of the aforementioned communication device types.

[0405] At least one row in Table 10-2 represents a possible implementation example of Example E.

[0406] Table 10-2

[0407] In the example shown in Table 10-2, a communication device of category 1 UE and type eMBB can initiate random access based on random access resource_1, a communication device of category 2 UE and type eMBB can initiate random access based on random access resource_2, and a communication device of category 2 UE and type Redcap can initiate random access based on random access resource_3.

[0408] In Example G, taking N random access resources as examples, there are 6 random access resources. These 6 random access resources can be denoted as Random Access Resource_1, Random Access Resource_2, Random Access Resource_3, Random Access Resource_4, Random Access Resource_5, and Random Access Resource_6. The following will illustrate this with reference to Tables 11-1 and 11-2.

[0409] At least one row in Table 11-1 represents a possible implementation example of Example G.

[0410] Table 11-1

[0411] Wherein, communication device category_1 and communication device category_2 are at least one of the aforementioned communication device categories. Communication device type_1 and communication device type_2 are at least one of the aforementioned communication device types. Capability_1 and capability_2 are at least one of the aforementioned communication device capabilities.

[0412] At least one row in Table 11-2 represents a possible implementation example of Example G.

[0413] Table 11-2

[0414] In the examples shown in Table 11-2, a UE's communication device of type eMBB with carrier aggregation capability_1 and category 1 can initiate random access based on random access resource_1; a UE's communication device of type eMBB with carrier aggregation capability_1 and category 2 can initiate random access based on random access resource_2; a UE's communication device of type eMBB with carrier aggregation capability_2 and category 2 can initiate random access based on random access resource_3; a UE's communication device of type Redcap with carrier aggregation capability_1 and category 1 can initiate random access based on random access resource_4; a UE's communication device of type Redcap with carrier aggregation capability_2 and category 1 can initiate random access based on random access resource_5; and a UE's communication device of type Redcap with carrier aggregation capability_2 and category 2 can initiate random access based on random access resource_6.

[0415] In one possible implementation, after receiving the first information in step S301, the first communication device determines the first random access resource based on at least one of its type, capability, or category, to determine a random access resource associated with at least one of its own type, capability, or category. For example, the first communication device may determine the first random access resource among N random access resources based on one of the methods in Tables 5-1 to 11-2 above.

[0416] Optionally, the correspondence in the table can be predefined by the protocol, or it can be communicated to the first communication device by the second communication device or other network equipment through signaling. This application does not limit this.

[0417] S302. The first communication device sends the second information.

[0418] Accordingly, the second communication device receives the second information. The second information is carried on the first random access resource, which is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0419] Optionally, the second information carried on the random access resources is used to access the wireless network. For example, the second information may be a random access preamble, a random access request, message 1 (Msg1), message A (MsgA), PRACH, or other information / message / signaling names defined by the network in the future. For example, the implementation of the sequence, time-frequency domain resources, etc., corresponding to the random access preamble can be found in the relevant introduction above.

[0420] Based on the scheme shown in Figure 3, the first communication device can determine a first random access resource among N random access resources based on the received first information, and the first communication device can send second information on the first random access resource. The first random access resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device. In this way, compared to the implementation method of reporting capability information after the initial access procedure (or random access procedure), the first communication device can send second information through a random access resource associated with at least one of its own type, capability, or category. This allows the recipient of the second information to identify at least one of the communication device's type, capability, or category during the initial access procedure, thereby reducing communication latency and improving communication performance.

[0421] Optionally, the N random access resources can be associated with different frequency domain resources. For example, in the frequency domain, the N random access resources can each be contained within N different frequency domain resources. For example, in the frequency domain, the N random access resources can each correspond to N different frequency domain resources. Furthermore, the indexes of the N random access resources can be used to determine the indices of the N different frequency domain resources, such as CC indexes, BWP indexes, etc. In the above process, after the first communication device completes the initial access procedure by sending second information through random access resources associated with at least one of its own type, capability, or category, the first communication device can also use the frequency domain resources associated with at least one of its own type, capability, or category for data transmission in subsequent data transmission processes. In this way, compared to the implementation method of resource allocation based on reported capability information after the initial access procedure, communication latency can be further reduced and data transmission performance can be improved.

[0422] As an implementation example, taking a number of first communication devices as three, these three first communication devices are represented as UE1, UE2, and UE3, respectively. In the above scheme, UE1, UE2, and UE3 can synchronize through the same frequency band SSB and receive the first information (e.g., SIB1) in step S301 based on the same frequency band SSB. Different UEs can correspond to different random access resources. The BWP where the SSB of the same frequency band is located can be called the downlink initial BWP (DL initial BWP), and the BWP where the random access resource is located can be called the uplink initial BWP (UL initial BWP). Optionally, the downlink initial BWP can also be expressed as the downlink initial access BWP (DL initial access BWP), receiving initial BWP, or receiving initial access BWP. The uplink initial BWP can also be expressed as the uplink initial access BWP (UL initial access BWP), sending initial BWP, or sending initial access BWP.

[0423] It should be noted that the signal used for synchronization can be a broadcast signal. Specifically, the broadcast signal involved in this application can be an SSB (e.g., an SSB can be a broadcast signal used for synchronization in uplink and downlink communication, which may include a synchronization signal and / or a broadcast channel), a sidelink (SL) SSB (e.g., an SL SSB can be a broadcast signal used for synchronization in sidelink communication, which may include a synchronization signal and / or a broadcast channel), a low-power SSB (LP-SSB), or other information / message / signaling names defined by the future network. For ease of description, SSB will be used as an example below. It is understood that when the scheme is applied to sidelink communication, the first communication device and the second communication device can be different terminal devices, and correspondingly, the SSB can be replaced with an SL SSB.

[0424] As shown in Figure 4a, taking five downlink frequency bands in the frequency domain as an example, these five downlink frequency bands are band 0, band 1, band 2, band 3, and band 4 in the figure. It is assumed that the three UEs mentioned above all receive SSBs in the downlink initial BWP in Band 2, meaning different UEs can receive SSBs in the same frequency domain resources. Subsequently, the terminal device can determine the frequency domain location of its random access resource (or uplink initial BWP) based on at least one of its type, capabilities, and category. For example, UE1 determines its random access resource is located in Band 3, UE2 determines its random access resource is located in Band 0 and / or Band 1, and UE3 determines its random access resource is located in Band 2.

[0425] Optionally, in the frequency domain, the downlink initial BWP and the uplink initial BWP can be contained in two different frequency domain resource sets. These two frequency domain resource sets can partially overlap, be completely identical, or have no overlap. Furthermore, the frequency domain resource sets involved in this application can be unified carriers (uni-carriers), aggregated carriers, joint carriers, or other names defined by the future network. For example, a uni-carrier can contain one or more frequency domain resource groups (e.g., a frequency domain resource group is a CC), and the frequency domain resource groups contained in different uni-carriers can be different from each other or partially identical. For example, a frequency domain resource set may include one or more carriers within the same frequency band, or a frequency domain resource set may include multiple carriers within multiple frequency bands. Figure 4a shows an example where the downlink initial BWP is contained within the downlink Uni-carrier and the uplink initial BWP is contained within the uplink Uni-carrier. In the example shown in Figure 4a, the downlink Uni-carrier and the uplink Uni-carrier can be completely identical, that is, both Uni-carriers contain the 5 frequency bands shown in Figure 4a.

[0426] Optionally, the frequency domain resource group involved in this application may be a component carrier (CC), component carrier, carrier, bandwidth part (BWP), or other names defined by the future network.

[0427] Optionally, frequency domain resources in the same frequency domain resource set are equivalent to a logical carrier. For example, frequency domain resources in the same frequency domain resource set can share a radio frequency channel, and / or the signals carried by frequency domain resources in the same frequency domain resource set can be subjected to FFT operation together.

[0428] For example, consider a frequency domain resource set as a Uni-carrier and a frequency domain resource group as a CC. A Uni-carrier includes multiple CCs, which can be viewed as a virtual single-carrier component CC or a logical single-carrier component (single CC). For instance, multiple CCs included in a Uni-carrier may share a single radio frequency channel, and / or, a large-scale time-frequency domain transformation process may be performed during signal transmission (e.g., this time-frequency domain transformation process may include Fast Fourier Transform (FFT), Discrete Fourier Transform (DFT), or wavelet transform, etc.). For example, a large-scale time-frequency domain transformation can cover all subcarriers of the frequency domain resource set, that is, the size of the frequency domain transformation can be greater than or equal to the number of subcarriers in the frequency domain resource set.

[0429] For example, a frequency domain resource set may include one or more carriers within the same frequency band, or a frequency domain resource set may include multiple carriers within multiple frequency bands.

[0430] Optionally, the frequency band in this application may be the operating band defined in NR protocol 38.101, or it may be a portion of the frequency domain resources within the operating band. A frequency band may refer to a segment of frequency domain resources, which may include continuous resources or discontinuous resources.

[0431] Optionally, a frequency band may include one or more frequency domain resource groups.

[0432] Optionally, the frequency domain resource set can be divided according to the frequency band or frequency range where the frequency domain resources are located. Taking CCs as an example, multiple CCs within frequency range 1 (FR1) form a frequency domain resource set, multiple CCs within frequency range 2 (FR2) form a frequency domain resource set, and multiple CCs within frequency range 3 (FR3) form a frequency domain resource set. It should be understood that the frequency domain resource division method here is only for illustration. In actual implementation, the same frequency domain resource set may also include CCs from different frequency ranges, or the same frequency domain resource set may include some CCs within the same frequency range.

[0433] For two frequency domain resources within the same frequency domain resource set, these two frequency domain resources can be co-located (i.e., the signals of these two frequency domain resources can be processed through the same second communication device, enabling the above scheme to be applied to communication between the same second communication device and the first communication device). Alternatively, these two frequency domain resources can also be non-co-located (i.e., the signals of these two frequency domain resources can be processed through different second communication devices, enabling the above scheme to be applied to communication between different second communication devices and the first communication device).

[0434] Alternatively, Uni-carrier may have multiple implementations, which will be illustrated with some examples below.

[0435] For example, a network device can be configured with three Uni-carriers: Uni-carrier0, Uni-carrier1, and Uni-carrier2. Each Uni-carrier can correspond to a CC group, and each CC group includes one or more CCs.

[0436] For example, network devices can divide / configure CC groups according to the frequency band or frequency domain range where the CC is located.

[0437] For example, network devices can divide / configure uni-carriers according to the frequency band or frequency domain range where the CC is located. For example, multiple CCs in frequency range 1 (FR1) form a uni-carrier, multiple CCs in frequency range 2 (FR2) form a uni-carrier, and multiple CCs in frequency range 3 (FR3) form a uni-carrier.

[0438] For example, a uni-carrier may include multiple CCs (Carriers) that can include an anchor CC, and optionally, one or more capacity CCs. The anchor CC can include at least one of the following functions: camping, receiving paging, transmitting and receiving low-power wake-up signals (LP-WUS) (e.g., the UE transmitting an uplink wake-up signal (UL WUS)), etc. Furthermore, the capacity CC can include communication functions, such as transmitting and receiving service data. Optionally, the anchor CC can also be called a coverage CC, which can be a CC used to ensure the coverage performance of the terminal equipment.

[0439] Optionally, the anchor carrier and any capacity carrier for a UE can be from a network device (e.g., the signal transmitted on the anchor carrier and the signal transmitted on any capacity carrier of the UE can be from the same network device) or from multiple network devices (e.g., the signal transmitted on the anchor carrier and the signal transmitted on any capacity carrier of the UE can be from different network devices).

[0440] Optionally, multiple CCs in a Uni-carrier can be co-located or non-co-located.

[0441] Optionally, the first information in step S301 can be used to configure the downlink Uni-carrier and / or the uplink Uni-carrier, as illustrated below using the implementation shown in Figure 4b as an example.

[0442] In the example shown in Figure 4b, the downlink Uni-carrier and uplink Uni-carrier configured in the first information are the same, both containing four bands: Band 0, Band 1, Band 2, and Band 3. It is assumed that the SSB carries part of the frequency domain resources in Band 0.

[0443] Optionally, the first information can also configure the priority of the bands. The first information includes priority identifiers corresponding to different bands, or the priority of the bands can be indicated by configuring the band order. For example, the first information can include priority identifiers corresponding to four bands, where a smaller value for a priority identifier of a band indicates a higher priority, or a larger value for a priority identifier of a band indicates a higher priority. Optionally, the first information can indicate the priority of the four bands by the field order of the four bands, where the earlier a field appears in a band (e.g., the earlier the field order), the higher the priority of that band, or the later a field appears in a band (e.g., the later the field order), the higher the priority of that band. In the following example, taking the priority of the four bands from high to low as Band 0, Band 1, Band 2, Band 3 as an example, the UE preferentially accesses the lower priority band among all supported bands. Optionally, in the above example, the lowest priority band refers to a band supported by all different first communication devices; this band can be called the default band or the baseline band. In the above example, the default band is the lowest priority band. In practical applications, the default band can be the highest priority band or a band with a specific index (e.g., index 0 or index 1) defined by the future network.

[0444] In Figure 4b, assuming there are 5 UEs (UE1 to UE5) receiving SSBs and initiating random access within the 4 bands included in the first information indicating Uni-carrier, these 5 UEs determine the frequency domain resources in which their supported random access resources reside based on one of their own type, capability, or category. For example, the results determined by the 5 UEs are as follows:

[0445] UE1 supports four bands: Band 0, Band 1, Band 2, and Band 3. UE2 supports the first two bands: Band 0 and Band 1. UE3 supports the first three bands: Band 0, Band 1, and Band 2. UE4 only supports the band containing the SSB, namely Band 0. UE5 only supports the bandwidth of the SSB, specifically the portion of Band 0 with the same bandwidth as the SSB.

[0446] Subsequently, different UEs initiate random access based on the random access resources of their own determined band (e.g., sending second information). For example, each UE initiates random access using the lowest priority frequency domain resource among all frequency domain resources supported by that UE (i.e., the second information is carried on the lowest priority frequency domain resource).

[0447] For example, in the scenario shown in Figure 4b above, the following process is included:

[0448] If UE1 supports 4 bands, then UE1 initiates random access in the lowest priority band 3 (e.g., sending the second information). If UE2 supports the first 2 bands, then UE2 initiates random access in the lowest priority band 1 (e.g., sending the second information). If UE3 supports the first 3 bands, then UE3 initiates random access in the lowest priority band 2 (e.g., sending the second information). If UE4 only supports the band where the SSB is located, then UE4 initiates random access in the lowest priority band 0 (e.g., sending the second information). If UE5 only supports the bandwidth of the SSB, then UE5 initiates random access within the frequency domain resources corresponding to the SSB in the lowest priority band 0 (e.g., sending the second information).

[0449] In this way, after the second communication device detects the second information, it can determine at least one of the types, capabilities, or categories of each UE during the initial access phase. For example, in the scenario shown in Figure 4b above, the process includes the following:

[0450] If the second communication device receives the second information in Band 3, then the second communication device can determine that the UE sending the second information indicates support for 4 Bands (e.g., UE1 mentioned above). If the second communication device receives the second information in Band 1, then the second communication device can determine that the UE sending the second information indicates support for 2 Bands (e.g., UE2 mentioned above). If the second communication device receives the second information in Band 2, then the second communication device can determine that the UE sending the second information indicates support for 3 Bands (e.g., UE3 mentioned above can support 3 Bands). If the second communication device receives the second information in Band 0, then the second communication device can determine that the UE sending the second information indicates support for 1 Band (e.g., UE4 mentioned above can support 1 Band). If the second communication device receives the second information within the frequency domain resources corresponding to the SSB in Band 0, then the second communication device can determine that the UE sending the second information indicates support for the frequency domain resources corresponding to the SSB in 1 Band (e.g., UE5 mentioned above can support 1 Band).

[0451] In one possible implementation, N random access resources can be associated with different frequency domain resources, and there are multiple possible implementation methods. Some possible implementation methods will be provided below for explanation.

[0452] In Method A, M random access resources out of N random access resources correspond to M frequency domain resource groups respectively. For example, M random access resources out of N random access resources are contained in M ​​frequency domain resource groups respectively, where M is an integer greater than 1 and less than or equal to N.

[0453] In method A, the M random access resources contained in the N random access resources can each correspond to M frequency domain resource groups (for example, the m-th random access resource of the M random access resources is contained in the m-th frequency domain resource group of the M frequency domain resource groups, where m is an integer from 1 to M). In this way, the second information can be transmitted through different frequency domain resource groups, so as to distinguish different random access resources.

[0454] Furthermore, the types, capabilities, or categories of different first communication devices may differ. In the above scheme, the first communication device can initiate initial access based on a frequency domain resource group that matches at least one of its own type, capability, or category, and subsequently transmit data based on that frequency domain resource group, which can reduce the signaling overhead of scheduling or indicating the frequency domain resource group.

[0455] In one possible implementation of mode A, the M frequency domain resource groups correspond to a first frequency domain resource set, which includes one or more frequency domain resource groups.

[0456] Optionally, when M frequency domain resource groups correspond to the first frequency domain resource set, the first information includes at least one of the following:

[0457] First indication information, which is used to indicate the first frequency domain resource set (for example, the receiver of the first indication information can determine that the frequency domain resource set corresponding to the M frequency domain resource groups is the first frequency domain resource set); or,

[0458] The second indication information is used to indicate one or more frequency domain resource groups included in the first frequency domain resource set (for example, the recipient of the second indication information can determine the frequency domain resource groups included in the first frequency domain resource set).

[0459] In the above process, the second communication device can indicate the frequency domain resource set containing M frequency domain resource groups that include M random access resources through the first indication information and / or the second indication information. Subsequently, the first communication device, based on the indication of the first indication information and / or the second indication information, successfully completes the initial access through the first random access resource among the M random access resources. After that, the first communication device can communicate not only based on the frequency domain resource group corresponding to the first random access resource, but also based on the frequency domain resource set containing the frequency domain resource group corresponding to the first random access resource, which can reduce the indication overhead of the frequency domain resource set.

[0460] In another possible implementation of method A, the M frequency domain resource groups correspond to M frequency domain resource sets, such that the M frequency domain resource groups are each contained in the M frequency domain resource sets. For example, the m-th frequency domain resource group of the M frequency domain resource groups is contained in the m-th frequency domain resource set of the M frequency domain resource sets, where m takes values ​​from 1 to M.

[0461] Optionally, when the M frequency domain resource groups correspond to M frequency domain resource sets respectively, the first information includes at least one of the following:

[0462] The third indication information is used to indicate the M frequency domain resource sets; or,

[0463] The fourth indication information is used to indicate one or more frequency domain resource groups included in the M frequency domain resource sets.

[0464] In the above process, the first information can indicate the M frequency domain resource set containing the M frequency domain resource groups containing M random access resources through the third indication information and / or the fourth indication information. Subsequently, after the first communication device successfully completes the initial access through the first random access resource among the M random access resources based on the indication of the third indication information and / or the fourth indication information, the first communication device can communicate not only based on the frequency domain resource group corresponding to the first random access resource, but also based on the frequency domain resource set containing the frequency domain resource group corresponding to the first random access resource, which can reduce the indication overhead of the frequency domain resource set.

[0465] In one possible implementation of method A, the first information includes at least one of the following:

[0466] The fifth indication information is used to indicate that the M random access resources are associated with the M frequency domain resource groups; or,

[0467] The sixth indication information is used to indicate at least one of the type, capability, and category of the communication device associated with each of the M random access resources; or,

[0468] The seventh indication information is used to indicate at least one of the following: the type, capability, and category of the communication device associated with each of the M frequency domain resource groups; or,

[0469] The eighth indication information is used to indicate at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters corresponding to the second information; wherein the M random access resources satisfy at least one of the following: the sequence parameters corresponding to different random access resources among the M random access resources are different, the time-domain parameters corresponding to different random access resources among the M random access resources are different, and the frequency-domain parameters corresponding to different random access resources among the M random access resources are different; or,

[0470] The ninth indication information is used to indicate the resource information of the response resources corresponding to the M random access resources, and the response resources are used to transmit the response information of the second information.

[0471] Therefore, when M random access resources out of N random access resources correspond to M frequency domain resource groups respectively, the first information can indicate the relevant information through at least one of the fifth to ninth indication information, so that the first communication device can communicate based on the relevant information.

[0472] As an example, when the first information includes fifth indication information, the first communication device can determine, through the fifth indication information, that M random access resources are associated with M frequency domain resource groups. This allows the first communication device to determine that the m-th random access resource among the M random access resources corresponds to the m-th frequency domain resource group among the M frequency domain resource groups, where m takes values ​​from 1 to M. Subsequently, after determining the m-th random access resource based on at least one of its own type, capability, or category, the first communication device initiates random access within the m-th frequency domain resource group associated with the m-th random access resource. For example, the m-th random access resource in the m-th frequency domain resource group sends second information.

[0473] As an example, when the first information includes sixth indication information, the first communication device can determine at least one of the type, capability, and category of the communication device associated with each random access resource through the sixth indication information, so that the first communication device can determine one of the M random access resources based on at least one of its own type, capability, and category. Thereafter, the first communication device can initiate random access based on that one random access resource. For example, the first communication device sends second information on that one random access resource.

[0474] As an example, when the first information includes seventh indication information, the first communication device can determine at least one of the type, capability, and category of the communication device associated with each frequency domain resource group through the seventh indication information, enabling the first communication device to determine at least one of its own type, capability, and category to identify one of the M frequency domain resource groups. Subsequently, the first communication device can initiate random access based on the random access resources in that one frequency domain resource group. For example, the first communication device sends second information using the random access resources in that one frequency domain resource group.

[0475] As an example, when the first information includes eighth indication information, the first communication device can determine at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters corresponding to the second information through the eighth indication information, so that the first communication device can initiate random access based on at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters. For example, the first communication device sends the second information based on at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters.

[0476] As an example, taking sequence parameters as an example, these sequence parameters may include one or more of the following: sequence format indicator, sequence length indicator, root sequence indicator, or cyclic shift indicator. As described above, different first communication devices may transmit second information on different frequency domain resources. In the above process, the eighth indication information can indicate that the sequence parameters corresponding to the second information on different frequency domain resources are different, making the sequences (e.g., PRACH sequences) of the second information on different frequency domain resources different. For example, in the example shown in Figure 4b above, UE4 and / or UE5 can be UEs with lower capabilities (e.g., NB-IoT, RedCAP, etc., which support narrowband), and the second information transmitted by these UEs can be simpler sequences (e.g., shorter sequences); while UE1, UE2, or UE3 can be UEs with higher capabilities, and the second information transmitted by these UEs can be more complex sequences (e.g., longer sequences). In this way, the probability of collisions between different UEs accessing the network can be reduced.

[0477] Alternatively, in the above process, the eighth indication information can indicate that the sequence parameters corresponding to the second information on different frequency domain resources are the same, making the sequences (e.g., PRACH sequences) of the second information on different frequency domain resources identical. This increases the number of UEs accessing the same sequence. Optionally, if different UEs use the same sequence, these different UEs can transmit the second information on different frequency domain resources. For example, in the example shown in Figure 4b above, UE4 and / or UE5 can be UEs with lower capabilities (e.g., NB-IoT, RedCAP, etc., which support narrowband), and the second information transmitted by these UEs can be in Band 0; while UE1, UE2, or UE3 can be UEs with higher capabilities, and the second information transmitted by these UEs can be in other bands besides Band 0. This increases the number of UEs accessing the same sequence while also reducing the probability of collisions between different UEs accessing the network.

[0478] As an example, the eighth indication information can indicate at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters corresponding to the second information in a variety of ways.

[0479] In one possible implementation, the eighth indication information may indicate M sets of random access parameters corresponding to M random access resources (for example, the m-th random access resource among the M random access resources is configured through the m-th set of random access parameters in the M sets of random access parameters, where m takes values ​​from 1 to M). Each set of random access parameters includes at least one of sequence parameters, time-domain parameters, and frequency-domain parameters. Optionally, each set of random access parameters may also include resource information of the response resource (e.g., RAR resource) of the random access resource, and / or power information of the random access channel.

[0480] Taking the frequency domain parameters in each group of random access resources as an example, the frequency domain parameters may include at least one of the following: frequency domain band indication (e.g., freqBandIndicator), absolute frequency point A (e.g., absoluteFrequencyPointA, ARFCH), RACH configuration parameters (e.g., rach-configCommon), the type of communication device associated with the frequency domain parameter (e.g., ue_type), the capability of the communication device associated with the frequency domain parameter (e.g., ue_capability), and the category of the communication device associated with the frequency domain parameter (e.g., ue_categoryIndex).

[0481] Optionally, if the first information is configured with a UL Uni-carrier, the frequency domain band indicator (freqBandIndicator) information and / or ARFCH information in the above frequency domain parameters can be a Uni-carrier identifier or a CC identifier in the Uni-carrier.

[0482] For example, RACHInfoUL-SIB represents UL RACH information indicated by the System Information Block (SIB). It can include a list, with one or more items corresponding to each item (e.g., NR-MultiRACHInfo), where each item can correspond to a RACH resource in a frequency domain resource. Table 12 will be used as an example for illustration below.

[0483] It should be noted that the information cell structures shown in Tables 12 to 14 are merely implementation examples, and this application does not limit the order or number of information cells included in the first information. For example, one or more information cells can be added or removed in the subsequent tables. Furthermore, the order of different information cells can be adjusted in the subsequent tables.

[0484] Table 12

[0485] For example, Table 12 includes the following parameters: ue_type / ue_capability / ue_categoryIndex, which represent the type / capability / category of the communication device. The ue_type / ue_capability / ue_categoryIndex parameters in Table 12 are an example of an implementation of the sixth indication information.

[0486] For example, Table 12 includes the following parameters: `rach-ConfigGeneric` represents the general configuration parameters of RACH; `totalNumberOfRA-Preambles` represents the total number of preambles; `prach-RootSequenceIndex` indicates the root sequence identifier of PRACH; `prach-ConfigurationIndex` represents the configuration identifier of PRACH; `msg1-FDM` represents the number of Message 1 in frequency division multiplexing; `msg1-FrequencyStart` represents the frequency domain start position of Message 1; `zeroCorrelationZoneConfig` represents the zero-correlation zone configuration, also known as the cyclic shift configuration; `preambleReceivedTargetPower` represents the target power for receiving the preamble; `preambleTransMax` represents the maximum number of preamble transmissions; and `powerRampingStep` represents the power ramp-up step size. As mentioned above, the eighth indication information is used to indicate at least one of the sequence parameters, time domain parameters, and frequency domain parameters corresponding to the second information. Accordingly, the parameters involved in Table 12 are an implementation example of the eighth indication information.

[0487] For example, Table 12 also includes: ra-ResponseWindow represents the configuration information of the access response window at any time. As mentioned above, the ninth indication information is used to indicate the resource information of the response resources corresponding to the M random access resources. Accordingly, the ra-ResponseWindow parameter involved in Table 12 is an implementation example of the ninth indication information.

[0488] In another possible implementation, the eighth indication information may indicate M sets of random access parameters corresponding to M uplink resources, wherein the M uplink resources correspond to M random access resources (for example, the m-th random access resource of the M random access resources corresponds to the m-th uplink resource among the M uplink resources, where m takes the value from 1 to M). For example, the M uplink resources may be M Uni-carrier resources and / or M CC resources.

[0489] Similarly, each set of random access parameters includes at least one of sequence parameters, time-domain parameters, and frequency-domain parameters. Optionally, each set of random access parameters also includes resource information of the response resource (e.g., RAR resource) of the random access resource, and / or power information of the random access channel.

[0490] For example, MultiFrequencyBandListNR-SIB represents information about multiple frequency domain resources of the UL RACH indicated by the System Information Block (SIB). It can include a list, with one or more items (e.g., NR-MultiBandInfo), where one item can correspond to a RACH resource in a frequency domain resource. Table 13 will be used as an example for illustration below.

[0491] Table 13

[0492] It should be noted that Table 13 contains the same field names as Table 12, and the meanings of these fields can be found in the previous descriptions.

[0493] As an example, when the first information includes ninth indication information, the first communication device can determine the resource information of response resources (e.g., RAR resources) corresponding to M random access resources through the ninth indication information. These response resources are used to transmit the response information (e.g., RAR) of the second information. This allows the first communication device to receive the response information of the second information on the specified response resources, thereby improving the success rate of receiving the response information. Optionally, the resource information of the response resources (e.g., RAR resources) indicated by the ninth indication information can be referred to Figures 4c to 4d below and their related descriptions.

[0494] In Method B, K random access resources out of N random access resources correspond to the first frequency domain resource group. For example, K random access resources out of N random access resources are included in the first frequency domain resource group, where K is an integer greater than 1.

[0495] Optionally, the K random access resources may contain the same random access resources as the M random access resources mentioned above, or they may not contain the same random access resources.

[0496] In method B, the second information carried by different random access resources among the K random access resources can be transmitted through the same frequency domain resource group, so that the random access process corresponding to different random access resources can be realized through the same frequency domain resource group, which can reduce the implementation complexity.

[0497] In one possible implementation of method B, there may be multiple implementations of different random access resources among the K random access resources. The following will describe some possible implementation examples.

[0498] Method ①. Different random access resources among the K random access resources occupy different time-frequency resources.

[0499] Optionally, the time-frequency resources involved in this application may differ, including: different time-domain resources and / or different frequency-domain resources.

[0500] For example, in method ①, the different random access resources among the K random access resources occupy different time-frequency resources, and the different random access resources among the K random access resources occupy the same sequence resources. For example, the first information can be configured with the same sequence parameters (e.g., root sequence indicator, cyclic shift indicator, etc.) for the K random access resources. In this way, the number of UEs accessing the same sequence can be increased. For example, in the example shown in Figure 4b above, UE4 and / or UE5 can be UEs with lower capabilities (e.g., NB-IoT, RedCAP, etc., which support narrowband), and the second information sent by these UEs can be in Band 0; while UE1, UE2, or UE3 can be UEs with higher capabilities, and the second information sent by these UEs can be in other Bands besides Band 0. In this way, the number of UEs accessing the same sequence can be increased while reducing configuration overhead and reducing the probability of conflict between different UEs accessing the network.

[0501] Method ② The different random access resources among the K random access resources occupy different sequence resources.

[0502] For example, in method ②, different random access resources among the K random access resources occupy different sequence resources. For instance, the first information can be configured with different sequence parameters (e.g., root sequence indicator, cyclic shift indicator, etc.) for the K random access resources. In this way, the sequences (e.g., PRACH sequences) of the second information sent by different first communication devices are different. For example, in the example shown in Figure 4b above, UE4 and / or UE5 can be UEs with lower capabilities (e.g., NB-IoT, RedCAP, etc., which support narrowband), and the second information sent by these UEs can be simpler sequences (e.g., shorter sequences); while UE1, UE2, or UE3 can be UEs with higher capabilities, and the second information sent by these UEs can be more complex sequences (e.g., longer sequences). In this way, the probability of access conflicts between different UEs can be reduced.

[0503] Method ③ The different random access resources among the K random access resources occupy different time-frequency resources, and the different random access resources among the K random access resources occupy different sequence resources.

[0504] For example, in method ③, different random access resources among the K random access resources occupy different sequence resources, and the sequence resources occupied by different random access resources among the K random access resources are different. For example, the first information can be configured with K different time-frequency resources, and different sequence parameters (e.g., root sequence indicator, cyclic shift indicator, etc.) can be configured for these K random access resources. In this way, the sequence of the second information (e.g., PRACH sequence) sent by different first communication devices is different. For example, in the example shown in Figure 4b above, UE4 and / or UE5 can be UEs with lower capabilities (e.g., NB-IoT, RedCAP, etc., which support narrowband), and the second information sent by these UEs can be simpler sequences (e.g., shorter sequences); while UE1, UE2, or UE3 can be UEs with higher capabilities, and the second information sent by these UEs can be more complex sequences (e.g., longer sequences). In this way, the probability of access conflicts between different UEs can be reduced, and the configuration flexibility can be improved.

[0505] When K random access resources correspond to a first frequency domain resource group, the second information transmitted by different random access resources in the K random access resources can be distinguished by time-frequency resources and / or sequence resources, so that the receiver of the second information can identify different first communication devices by different time-frequency resources and / or different sequence resources.

[0506] In one possible implementation of method B, the first information includes at least one of the following:

[0507] The tenth indication information is used to indicate at least one of the type, capability, and category of the communication device associated with each of the K random access resources; or,

[0508] The eleventh indication information is used to indicate at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters corresponding to the second information; wherein the K random access resources satisfy at least one of the following: the sequence parameters corresponding to different random access resources among the K random access resources are different, the time-domain parameters corresponding to different random access resources among the K random access resources are different, and the frequency-domain parameters corresponding to different random access resources among the K random access resources are different; or,

[0509] The twelfth indication information is used to indicate the resource information of the response resources corresponding to the K random access resources, and the response resources are used to transmit the response information of the second information; or,

[0510] The thirteenth indication information is used to indicate multiple time-domain parameters corresponding to the second information, and at least one of the following: type, capability, and category of the communication device associated with each of the multiple time-domain parameters; wherein, different time-domain parameters are associated with different types of communication devices, different capabilities of the communication devices associated with different time-domain parameters, and different categories of the communication devices associated with different time-domain parameters; or,

[0511] The fourteenth indication information is used to indicate multiple frequency domain parameters corresponding to the second information, and at least one of the following: type, capability, and category of the communication device associated with each of the multiple frequency domain parameters; wherein, different frequency domain parameters are associated with different types of communication devices, different capabilities of the communication devices associated with different frequency domain parameters, and different categories of the communication devices associated with different frequency domain parameters; or,

[0512] The fifteenth instruction information is used to indicate a plurality of sequence parameters corresponding to the second information, and at least one of the type, capability, and category of the communication device associated with each of the plurality of sequence parameters; wherein, the communication devices associated with different sequence parameters are of different types, have different capabilities, and are associated with different categories.

[0513] In the above process, when the K random access resources included in the N random access resources correspond to the first frequency domain resource group, the first information can indicate the relevant information through at least one of the tenth to fifteenth indication information, so that the first communication device can communicate based on the relevant information.

[0514] As an example, when the first information includes tenth indication information, the first communication device can determine at least one of the following: type, capability, and category of the communication device associated with each of the K random access resources, using the tenth indication information. This allows the first communication device to determine one of the K random access resources based on at least one of its own type, capability, and category, as well as the tenth indication information. Subsequently, the first communication device can initiate random access based on that one random access resource. For example, the first communication device might send second information using that one random access resource.

[0515] As an example, when the first information includes eleventh indication information, the first communication device can determine at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters corresponding to the second information through the eleventh indication information. This allows the first communication device to initiate random access based on at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters. For example, the first communication device can send the second information based on at least one of the sequence parameters, time-domain parameters, and frequency-domain parameters.

[0516] As an example, when the first information includes twelfth indication information, the first communication device can determine the resource information of the response resources corresponding to K random access resources through the twelfth indication information. These response resources are used to transmit the response information of the second information. This allows the first communication device to receive the response information of the second information on the specified response resources, thereby improving the success rate of receiving the response information. Optionally, the resource information of the response resources (e.g., RAR resources) indicated by the twelfth indication information can be referred to Figures 4c to 4d below and their related descriptions.

[0517] As an example, when the first information includes a thirteenth indication, the first communication device can determine multiple time-domain parameters corresponding to the second information through the thirteenth indication, and at least one of the following: the type, capability, and category of the communication device associated with each of the multiple time-domain parameters. This ensures that different time-domain parameters satisfy at least one of the following: different time-domain parameters are associated with different types of communication devices, different time-domain parameters are associated with different capabilities of communication devices, or different time-domain parameters are associated with different categories of communication devices. In this way, the first communication device can initiate random access based on time-domain parameters associated with at least one of its own type, capability, or category. For example, if the first communication device sends the second information based on time-domain resources associated with at least one of its own type, capability, or category, the recipient of the second information can identify at least one of the type, capability, or category of the communication device through different time-domain resources during the initial access process, thereby reducing communication latency.

[0518] As an example, when the first information includes fourteenth indication information, the first communication device can determine, through the fourteenth indication information, multiple frequency domain parameters corresponding to the second information, and at least one of the following: the type, capability, and category of the communication device associated with each of the multiple frequency domain parameters. This ensures that different frequency domain parameters satisfy at least one of the following: different frequency domain parameters are associated with different types of communication devices, different frequency domain parameters are associated with different capabilities of communication devices, or different frequency domain parameters are associated with different categories of communication devices. In this way, the first communication device can initiate random access based on frequency domain parameters associated with at least one of its own type, capability, or category. For example, if the first communication device sends the second information based on frequency domain resources associated with at least one of its own type, capability, or category, the recipient of the second information can identify at least one of the type, capability, or category of the communication device during the initial access process, thereby reducing communication latency.

[0519] As an example, when the first information includes a fifteenth indication, the first communication device can determine, through the fifteenth indication, multiple sequence parameters corresponding to the second information, and at least one of the following: the type, capability, and category of the communication device associated with each of the multiple sequence parameters. This ensures that different sequence parameters satisfy at least one of the following: different sequence parameters are associated with different types of communication devices, different sequence parameters are associated with different capabilities of communication devices, or different sequence parameters are associated with different categories of communication devices. In this way, the first communication device can initiate random access based on sequence parameters associated with at least one of its own type, capability, or category. For example, if the first communication device sends the second information based on sequence resources associated with at least one of its own type, capability, or category, the recipient of the second information can identify at least one of the type, capability, or category of the communication device during the initial access process, thereby reducing communication latency.

[0520] For example, RACHfrelistNR-SIB represents a list of RACH frequency domains indicated by a System Information Block SIB, including one or more frequency domain information (e.g., RACHfreInfo). RACHtimelistNR-SIB represents a list of RACH time domains indicated by a System Information Block SIB, including one or more time domain information (e.g., RACHtimeInfo). Table 14 will be used as an example for illustration below.

[0521] Table 14

[0522] It should be noted that Table 14 contains the same field names as Table 12, and the meanings of these fields can be found in the previous descriptions.

[0523] In one possible implementation, the first information received by the first communication device in step S301 can indicate or configure N random access resources, and Q of the N random access resources correspond to P response resources. The response resources are used to transmit response information of the second information, and the P response resources correspond to P frequency domain resource groups (for example, the P response resources are respectively contained in P frequency domain resource groups), where Q is an integer greater than 1 and less than or equal to N, and P is a positive integer less than or equal to Q.

[0524] For example, when Q is greater than 1 and P is equal to Q, at least two of the N random access resources correspond to response resources located in different frequency domain resource groups. This enables the first communication device that sends the second information through different random access resources to receive the response information of the second information through the response resources in different frequency domain resource groups. This reduces or minimizes the interference between different response information, increases the number of accesses for the first communication device, and improves access performance.

[0525] As shown in Figure 4c, taking at least two of the aforementioned N random access resources, including random access resource A and random access resource B, as an example, the response resources corresponding to these two random access resources are located in different frequency domain resource groups (CC is used as an example in the figure). For example, random access resource A is located in uplink CC1, and random access resource B is located in uplink CC2.

[0526] As shown in the example in Figure 4d, the response resource corresponding to random access resource A is located in downlink CC1, and the response resource corresponding to random access resource B is located in downlink CC2.

[0527] For example, when Q is greater than 1 and P is less than Q, the response resources corresponding to at least two of the N random access resources are located in the same frequency domain resource group. This enables the first communication device that sends the second information through different random access resources to receive the response information of the second information through the response resources in the same frequency domain resource group, thereby reducing the implementation complexity, improving resource utilization, and achieving network energy saving.

[0528] As shown in the example in Figure 4e, the response resource corresponding to random access resource A is located in downlink CC3, and the response resource corresponding to random access resource B is also located in downlink CC3.

[0529] Optionally, the P frequency domain resource groups may correspond to the same frequency domain resource set. For example, the P frequency domain resource groups may be included in the same frequency domain resource set, or the P frequency domain resource groups may be included in P different frequency domain resource sets respectively.

[0530] Optionally, the response information of the second information may be a random access response (RAR), message 2 (Msg2), message B (MsgB), random access reply, or other information / message / signaling names defined by the network in the future.

[0531] Optionally, the response resource corresponding to the random access resource can be a RAR resource, Msg2 resource, MsgB resource, random access response resource, or other information / message / signaling name defined by the network in the future.

[0532] Optionally, the Q random access resources may contain the same random access resources as the M (or K) random access resources mentioned above, or they may not contain the same random access resources.

[0533] In one possible implementation, the first information is used to indicate the resource configuration (e.g., time-frequency domain resource location) of the P response resources. Thus, the first communication device can determine the resource configuration of the P response resources through the first information, and subsequently receive response information based on the second information, thereby improving the success rate of receiving the response information.

[0534] For example, in the example shown in Figure 4c, the first information received by the first communication device in step S301 can indicate or configure the frequency domain resource group where random access resource A is located and the frequency domain resource group where random access resource B is located. For example, the first information can include the identifiers of the frequency domain resource group where random access resource A is located and the frequency domain resource group where random access resource B is located. For example, the first information can include the identifier of uplink CC1 where random access resource A is located and the identifier of uplink CC2 where random access resource B is located; optionally, the first information can include the identifiers of the frequency domain resource set to which the frequency domain resource group where random access resource A is located belongs and the identifiers of the frequency domain resource set to which the frequency domain resource group where random access resource B is located belongs. For example, the first information can also include the identifier of the Uni-carrier to which uplink CC1 belongs and the identifier of the Uni-carrier to which uplink CC2 belongs.

[0535] For example, in the example shown in Figure 4d, the first information may also indicate or configure the frequency domain resource group where the response resource corresponding to random access resource A is located and the frequency domain resource group where the response resource corresponding to random access resource B is located. For example, the first information may include the identifiers of the frequency domain resource group where the response resource corresponding to random access resource A is located and the frequency domain resource group where the response resource corresponding to random access resource B is located. For example, the first information may include the identifier of downlink CC1 where the response resource corresponding to random access resource A is located and the identifier of downlink CC2 where the response resource corresponding to random access resource B is located. Optionally, the first information may include the identifier of the frequency domain resource set to which the frequency domain resource group where the response resource corresponding to random access resource A is located belongs and the identifier of the frequency domain resource set to which the frequency domain resource group where the response resource corresponding to random access resource B is located belongs. For example, the first information may also include the identifier of the Uni-carrier to which downlink CC1 belongs and the identifier of the Uni-carrier to which downlink CC2 belongs.

[0536] For example, in the example shown in Figure 4e, the first information may also indicate or configure the frequency domain resource group where the response resource corresponding to random access resource A is located and the frequency domain resource group where the response resource corresponding to random access resource B is located. For example, the first information may include the identifiers of the frequency domain resource groups where the response resources corresponding to random access resource A and random access resource B are located. For example, the first information may include the identifier of downlink CC3. Optionally, the first information may include the identifier of the frequency domain resource set to which the frequency domain resource groups where the response resources corresponding to random access resource A and random access resource B are located belong. For example, the first information may also include the identifier of the Uni-carrier to which downlink CC3 belongs.

[0537] In one possible implementation, the transmission resources for the first information in step S301 are determined by a first broadcast signal. Correspondingly, the method shown in FIG3 further includes: the first communication device receiving response information for the second information. The response information for the second information can be implemented in various ways, and some possible implementations will be described below.

[0538] Method 1. The response information of the second information and the first broadcast signal are carried in the same frequency domain resource group of the same frequency domain resource set.

[0539] In Method 1, the first communication device can determine the transmission resource for the first information by receiving the first broadcast signal, and receive the first information on that transmission resource. Furthermore, after the first communication device sends the second information based on the first information, it can also receive the response information for the second information. The response information for the second information and the first broadcast signal are respectively carried on two receiving resources of the first communication device. These two receiving resources can correspond to the same frequency domain resource group within the same frequency domain resource set, enabling the first communication device to receive the first broadcast signal and the response information for the second information within the same frequency domain resource group of the same frequency domain resource set. This reduces implementation complexity, improves resource utilization, and achieves network energy saving.

[0540] For example, in method 1, the first information may indicate the same frequency domain resource set and / or the same frequency domain resource group. For instance, the first information may carry the identifier of the frequency domain resource set, and / or the identifier of the frequency domain resource group, such as the identifier of the same frequency domain resource set (e.g., Uni-carrier identifier) ​​and / or the identifier of the same frequency domain resource group (e.g., CC identifier).

[0541] Optionally, if the first information does not indicate the frequency domain resource (e.g., the CC where the RAR is located) where the response information of the second information is located, it is assumed that the response information of the second information is transmitted on the same frequency domain resource as the first broadcast signal (e.g., RAR and SSB). For example, the same frequency domain resource is the same CC. Or, the same frequency domain resource is the same Uni-carrier. Or, the same frequency domain resource is the same CC within the same Uni-carrier.

[0542] Method 2. The response information of the second information and the first broadcast signal are carried in different frequency domain resource groups of the same frequency domain resource set.

[0543] In Method 2, the two resources mentioned above can correspond to different frequency domain resource groups within the same frequency domain resource set. This allows the first communication device to receive the first broadcast signal and the response information of the second information within different frequency domain resource groups of the same frequency domain resource set, reducing transmission interference between the two resources and improving the reception performance of the response information of the second information. Furthermore, the frequency domain resource containing the response information of the second information can be used for subsequent data transmission. In this way, different first communication devices can subsequently transmit data in different frequency domain resource groups of the same frequency domain resource set, reducing resource scheduling overhead during data transmission and adapting to the transmission needs of different communication devices.

[0544] For example, in method 2, the first information may indicate the same frequency domain resource set and / or different frequency domain resource groups. For instance, the first information may carry an identifier of the frequency domain resource set, such as the identifier of the same frequency domain resource set (e.g., a Uni-carrier identifier), and / or, the first information may carry an identifier of the frequency domain resource group, such as the identifier of different frequency domain resource groups (e.g., a CC identifier).

[0545] Method 3. The response information of the second information and the first broadcast signal are carried on different frequency domain resource sets.

[0546] In method 3, the two resources mentioned above can correspond to different frequency domain resource sets, enabling the first communication device to receive the first broadcast signal and the response information of the second information within different frequency domain resource sets. This reduces transmission interference between the two resources, thereby improving the reception performance of the response information of the second information. Furthermore, the frequency domain resource containing the response information of the second information can be used for subsequent data transmission. In this way, different first communication devices can subsequently transmit data in different frequency domain resource sets, reducing resource scheduling overhead during data transmission and adapting to the transmission needs of response information from different communication devices.

[0547] For example, in method 3, the first information may indicate the aforementioned different frequency domain resource sets. For instance, the first information may carry an identifier of the frequency domain resource set, such as including the identifiers of the aforementioned multiple different frequency domain resource sets (e.g., a Uni-carrier identifier).

[0548] In the above implementation process, different first communication devices can receive the same SSB, and in step S301, determine a random access resource from N random access resources based on the first information (e.g., SIB1) corresponding to the same SSB, and initiate random access in step S302. Wherein, if at least one of the types, capabilities, or categories corresponding to the different first communication devices is different, these first communication devices can receive the SSB at the same downlink initial BWP and send the second information at different uplink initial BWPs. In this way, different first communication devices can receive the SSB through the same downlink initial BWP, reducing the complexity of the first communication devices, improving downlink resource utilization, and achieving network energy saving.

[0549] In actual use, different first communication devices can also receive SSBs in other ways. For example, if at least one of the types, capabilities, or categories of the different first communication devices is different, these first communication devices can receive SSBs at different downlink initial BWPs. More implementation examples will be provided below.

[0550] In one possible implementation, the transmission resource for the first information is determined by a first broadcast signal; wherein the frequency domain resource carrying the first broadcast signal is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device. Thus, the first communication device can determine the transmission resource for the first information by receiving the first broadcast signal and receive the first information on that transmission resource. Furthermore, the frequency domain resource carrying the first broadcast signal is associated with at least one of the type, capability, or category of the first communication device. In this way, first communication devices of different types, capabilities, or categories can receive broadcast signals through different frequency domain resources, enabling the first communication devices to synchronize based on broadcast signals on frequency domain resources that match at least one of their own type, capability, or category.

[0551] In one possible implementation, the method shown in FIG3 further includes: the first communication device determining the frequency domain resources carrying the first broadcast signal based on at least one of the first communication device type, the first communication device capability, or the first communication device category. Thus, the first communication device can determine the frequency domain resources for receiving the broadcast signal based on at least one of the first communication device type, the first communication device capability, or the first communication device category, enabling the first communication device to synchronize based on the broadcast signal on frequency domain resources matching at least one of its own type, capability, or category.

[0552] For example, consider a broadcast signal carried on a downlink initial BWP and second information carried on an uplink initial BWP. In the above process, multiple downlink initial BWPs can flexibly correspond to multiple uplink initial BWPs. For instance, first communication devices that differ in at least one of the following: communication device type, communication device capability, or communication device category, can receive SSBs through different downlink initial BWPs, and receive first information (e.g., SIB1) based on their respective received SSBs, and subsequently send second information (e.g., a random access request) based on the received first information.

[0553] As shown in Figure 4f, taking five downlink frequency bands in the frequency domain as an example, these five downlink frequency bands are band 0 (Band 0), band 1 (Band 1), band 2 (Band 2), band 3 (Band 3), and band 4 (Band 4) in the figure. Assume that UE1 receives the SSB in the downlink initial BWP in Band 0 or Band 1, and UE2 receives the SSB in the downlink initial BWP in Band 3. That is, different UEs can receive SSBs in different frequency domain resources. Subsequently, UE1 can determine that its random access resource (or uplink initial BWP) is located in Band 3 or Band 4 based on at least one of its own type, capability, and category. UE2 can determine that its random access resource (or uplink initial BWP) is located in Band 0 and / or Band 1 based on at least one of its own type, capability, and category. Alternatively, UE1 and UE2 can determine that their respective random access resources (or uplink initial BWP) are located in Band 3 based on at least one of their own type, capability, and category. Random access resources corresponding to different UEs that are synchronized / accessed through different SSBs can be located in the same frequency domain.

[0554] Optionally, in the frequency domain, the downlink initial BWP can be contained in one frequency domain resource set, and the uplink initial BWP can be contained in another frequency domain resource set. These two frequency domain resource sets can partially overlap, be completely identical, or have no overlap. For example, a Uni-carrier can contain one or more frequency domain resource groups (e.g., a frequency domain resource group is one CC). The frequency domain resource groups contained in different Uni-carriers can be different from each other or partially identical. Figure 4f shows an example where the downlink initial BWP is contained in the downlink Uni-carrier and the uplink initial BWP is contained in the uplink Uni-carrier. Furthermore, in the example shown in Figure 4f, the downlink Uni-carrier and the uplink Uni-carrier can be completely identical, that is, both Uni-carriers contain the 5 frequency bands in Figure 4f.

[0555] In Figure 4f, assuming that the random access resources corresponding to the SSBs in Band 0 and / or Band 1 of the downlink Uni-carrier can be included in Band 0 or Band 1 of the uplink Uni-carrier, and the random access resources corresponding to the SSBs in Band 3 of the downlink Uni-carrier can be included in Band 3 or Band 4 of the uplink Uni-carrier, then after UE1 performs downlink synchronization through the first SSB in Band 0 and / or Band 1 of the downlink Uni-carrier, UE1 can initiate random access through Band 0 or Band 1 (e.g., UE1 sends the second information in Band 0 or Band 1), and UE2 performs downlink synchronization through the second SSB in Band 3 of the Uni-carrier (e.g., UE2 sends the second information in Band 3 or Band 4). These two UEs satisfy at least one of the following: UE1 and UE2 are of different types, UE1 and UE2 have different capabilities, or UE1 and UE2 have different categories. In this way, different UEs can access the cell through different SSBs and initiate random access using the random access resources corresponding to their respective SSBs. Alternatively, UE1 and UE2 can determine that their respective random access resources (or uplink initial BWP) are located in Band 3 based on at least one of their type, capabilities, and category. The random access resources corresponding to different UEs that synchronize / access through different SSBs can be located in the same frequency domain.

[0556] In one possible implementation, the response information of the second information is used to indicate the frequency domain resources of the first broadcast signal. For example, the response information of the second information may include an index or identifier of the frequency domain resources of the first broadcast signal, such as an SSB band / carrier index (SBCI). Thus, the first communication device can determine the frequency domain resources of the first broadcast signal through the response information of the second information, enabling the first communication device to determine whether the response information of the second information corresponds to the second information sent by the first communication device through comparison of the frequency domain resources, thereby completing the subsequent access process.

[0557] As shown in Figure 4g, taking the response information of the second message as an example, a traditional RAR includes one or more of the following fields:

[0558] 1) Timing advance command (TAC): i.e., UE uplink timing advance;

[0559] 2) Uplink Grant (UL Grant): Uplink scheduling information allocated for transmission Msg3 using PUSCH;

[0560] 3) Temporary cell radio access network temporary identifier (TC-RNTI): A temporary TC-RNTI used for Msg3 scrambling.

[0561] In the above scheme, RAR can also include SBCI. Figure 4g uses SBCI located in the first byte (Oct1) as an example. In practical applications, SBCI can also be located in other bytes.

[0562] In one possible implementation, the response information of the second information is used to indicate the frequency domain resources of the random access resource corresponding to the response signal. For example, the response information of the second information may include an index or identifier of the frequency domain resources of the first random access resource, such as a random access channel band carrier index (RBCI). Thus, the first communication device can determine the frequency domain resources of the random access resource corresponding to the response signal through the response information of the second information, enabling the first communication device to determine whether the response information of the second information corresponds to the second information sent by the first communication device through comparison of the frequency domain resources, thereby completing the subsequent access process.

[0563] In the above scheme, the RAR can also include the random access channel band carrier index (RBCI). Figure 4g uses the RBCI located in the first byte (Oct1) as an example. In practical applications, the RBCI can also be located in other bytes.

[0564] Optionally, the response information of the second information may carry SBCI and / or RBCI.

[0565] Optionally, the first information may indicate the frequency domain resources of the first broadcast signal. For example, the first information may include an index or identifier of the frequency domain resources of the first broadcast signal, such as the index being SBCI. In this way, the first communication device can send second information based on the first information, and after receiving response information indicating the second information that corresponds to the second information, the first communication device can determine that the response information is the response information corresponding to the first communication device, thereby resolving random access conflicts and achieving network energy saving.

[0566] In one possible implementation, the transmission resource for the first information is determined by a first broadcast signal, and the first communication device can also receive the first broadcast signal via other broadcast signals before receiving the first broadcast signal. Further examples will be described below.

[0567] As shown in the example in Figure 4h, compared to the method shown in Figure 3, before step S301, the method further includes:

[0568] Step A. The second communication device sends a second broadcast signal, and correspondingly, the first communication device receives the second broadcast signal. The second broadcast signal can be used to determine the transmission resources for the third information. For example, the second broadcast signal is an SSB, and the third information is the SIB corresponding to that SSB.

[0569] Step B. The first communication device receives third information based on the second broadcast signal; wherein the third information indicates L frequency domain resources corresponding to L broadcast signals, the L broadcast signals including the first broadcast signal, the frequency domain resource carrying the first broadcast signal being the first frequency domain resource among the L frequency domain resources, and L being an integer greater than or equal to 1; wherein the first frequency domain resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0570] In one possible implementation, the first broadcast signal and the second broadcast signal satisfy at least one of the following:

[0571] The type of communication device associated with the first broadcast signal is different from the type of communication device associated with the second broadcast signal; or,

[0572] The capabilities of the communication device associated with the first broadcast signal differ from those of the communication device associated with the second broadcast signal; or,

[0573] The type of communication device associated with the first broadcast signal is different from the type of communication device associated with the second broadcast signal.

[0574] Therefore, after receiving the third information based on the second broadcast signal, the first communication device can use the first frequency domain resource among L frequency domain resources as instructed by the third information to receive the first broadcast signal and synchronize using the first broadcast signal. In this way, the first communication device can determine a frequency domain resource matching at least one of its own type, capability, or category based on a searched broadcast signal, and receive another broadcast signal and achieve synchronization based on that frequency domain resource. This allows the first communication device to access the network on demand, improving the flexibility of the solution implementation and avoiding blind detection of broadcast signals, thus reducing access latency. Furthermore, the first communication device can subsequently transmit data using the synchronized broadcast signal, enabling subsequent data transmission based on frequency domain resources matching at least one of its own type, capability, or category, reducing resource scheduling overhead during data transmission.

[0575] Optionally, after step B above, the first communication device may determine a first frequency domain resource among L frequency domain resources based on at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device. Furthermore, the first communication device receives a first broadcast signal on the first frequency domain resource, enabling the first communication device to synchronize based on the broadcast signal on a frequency domain resource that matches at least one of its own type, capability, or category.

[0576] Step C. The second communication device sends a first broadcast signal, and correspondingly, the first communication device receives the first broadcast signal. The first broadcast signal can be used to determine the transmission resource for the first information. For example, the first broadcast signal is an SSB, and the first information is the SIB corresponding to that SSB.

[0577] As shown in Figure 4h, the first communication device can determine the transmission resource of the third information by receiving the second broadcast signal, and receive the third information on that transmission resource. The third information can indicate L frequency domain resources corresponding to L broadcast signals, and the first communication device can receive the first broadcast signal based on a first frequency domain resource associated with at least one of its own type, capability, or category, enabling the first communication device to synchronize based on broadcast signals on frequency domain resources matching at least one of its own type, capability, or category.

[0578] In one possible implementation, the third information in step B above includes at least one of the following:

[0579] The sixteenth indication information is used to indicate the types of communication devices that are allowed to access the L broadcast signals; wherein, different broadcast signals among the L broadcast signals allow different types of communication devices to access; or,

[0580] The seventeenth indication information is used to indicate the capabilities of the communication devices allowed to access the L broadcast signals; wherein, the capabilities of the communication devices allowed to access the L broadcast signals differ; or,

[0581] The eighteenth indication information is used to indicate the categories of communication devices that are allowed to access the L broadcast signals; wherein, different broadcast signals among the L broadcast signals allow different categories of communication devices to access; or,

[0582] The nineteenth instruction information is used to indicate the minimum bandwidth allowed for access to the L broadcast signals.

[0583] Therefore, the third information can indicate the relevant information of the L broadcast signals corresponding to the L frequency domain resources through at least one of the sixteenth to nineteenth indication information, so that the first communication device can communicate based on this relevant information.

[0584] As an example, if the third information includes a sixteenth indication, the first communication device can determine the type of communication device allowed to access the L broadcast signals using the sixteenth indication. This allows the first communication device to determine its own type and identify one of the L broadcast signals. Subsequently, the first communication device can receive the first broadcast signal based on the frequency domain resource corresponding to the broadcast signal that matches its own type. For example, the first communication device receives an SSB (Special Signal Share) on the frequency domain resource corresponding to that broadcast signal.

[0585] As an example, if the third information includes a seventeenth indication, the first communication device can determine the capabilities of communication devices allowed to access the L broadcast signals using the seventeenth indication. This allows the first communication device to determine its own capabilities and identify one of the L broadcast signals. Subsequently, the first communication device can receive the first broadcast signal based on the frequency domain resources corresponding to that broadcast signal that match its own capabilities. For example, the first communication device receives an SSB (Special Signal Share) on the frequency domain resources corresponding to that broadcast signal.

[0586] As an example, if the third information includes an eighteenth indication, the first communication device can determine the category of communication devices allowed to access the L broadcast signals using the eighteenth indication. This allows the first communication device to determine its own category and identify one of the L broadcast signals. Subsequently, the first communication device can receive the first broadcast signal based on the frequency domain resources corresponding to that broadcast signal that matches its own category. For example, the first communication device receives an SSB (Special Signal Share) on the frequency domain resources corresponding to that broadcast signal.

[0587] As an example, if the third information includes the nineteenth indication information, the first communication device can determine the minimum bandwidth allowed for access to L broadcast signals using the nineteenth indication information. This allows the first communication device to determine its own bandwidth capability and identify one of the L broadcast signals. Subsequently, the first communication device can receive the first broadcast signal based on the frequency domain resources corresponding to that broadcast signal, which matches its own bandwidth capability. For example, the first communication device receives the SSB (Special Signal Share) on the frequency domain resources corresponding to that broadcast signal.

[0588] The implementation of the aforementioned third information will be described below through some implementation examples.

[0589] As shown in Figure 4i, taking five downlink frequency bands in the frequency domain as an example, these five downlink frequency bands are band 0, band 1, band 2, band 3, and band 4 in the figure. Assume that UE1 receives the first SSB in the downlink initial BWP in band 0 or band 1, and UE2 receives the second SSB in the downlink initial BWP in band 3. That is, different UEs can receive SSBs in different frequency domain resources. Subsequently, UE1 can receive the SIB corresponding to the first SSB based on the first SSB, denoted as the first SIB; UE2 can receive the SIB corresponding to the second SSB based on the second SSB, denoted as the second SIB.

[0590] In the above process, at least one of the first SIB and the second SIB needs to indicate the frequency domain indication of one, two or more SSBs. Taking the first SIB as an example, the first SIB may carry the frequency domain indication of one or more other SSBs besides the first SSB, or the first SIB may carry the frequency domain indication of the first SSB and the frequency domain indication of one or more other SSBs.

[0591] As an example, the first SIB carries a frequency domain indication of its corresponding first SSB. For instance, the first SIB corresponds to the first SSB, and the first SIB may indicate at least one of the types, capabilities, or categories of communication devices that the first SSB can access, and / or the minimum bandwidth allowed for access by the first SSB. Specific implementation details can be found in the third information above. In this example, the first SIB located in Band 3 supports eMBB users and high bandwidth capabilities (e.g., 50 MHz).

[0592] Optionally, since the first communication device can receive the first SIB based on the first SSB, that is, the first communication device can know the frequency domain resource location of the first SSB corresponding to the first SSB itself, the frequency domain indication of the first SSB can include the SBCI of the first SSB in the above process. In this way, transmission overhead can be reduced. Optionally, the frequency domain indication of the first SSB can include the specific frequency domain resource location of the first SSB, such as the frequency domain range indication (e.g., FR1, FR2, etc.) corresponding to the first SSB, band indication information (e.g., band identifier), carrier component indication information (e.g., carrier identifier), or absolute radio frequency channel number (ARFCN) indication information (e.g., new radio global frequency raster (NR global frequency raster)). As an example, the first SIB also carries the frequency domain indication of the second SSB. For example, the first SIB can indicate at least one of the types, capabilities, or categories of communication devices that the second SSB can access, and / or the minimum bandwidth allowed for access by the second SSB. For specific implementation, refer to the third information above. In this example, the second SIB located in Band 0 and / or Band 1 supports users with low bandwidth capabilities (e.g., 5MHz, 10MHz, or 20MHz).

[0593] Optionally, since the first communication device may not know the frequency domain resource location of the second SSB before receiving the second SSB, the frequency domain indication of the second SSB may include the SBCI of the second SSB in the above process, thereby reducing transmission overhead.

[0594] Optionally, the frequency domain indication of the second SSB may include the specific frequency domain resource location of the second SSB, so that the first communication device can receive the second SSB based on the frequency domain resources of the second SSB. For example, the frequency domain range indication (e.g., FR1, FR2, etc.) corresponding to the second SSB, band indication information (e.g., band identifier), carrier component indication information (e.g., carrier identifier), or absolute radio frequency channel number (ARFCN) indication information (e.g., new radio global frequency raster (NR global frequency raster)).

[0595] For example, the second SIB carries the frequency domain indication of its corresponding second SSB, and also carries the frequency domain indication of the first SSB.

[0596] As an example, the second SIB carries a frequency domain indication (e.g., the SBCI of the second SSB) of its corresponding second SSB. For example, the second SIB corresponds to the second SSB, and the second SIB may indicate at least one of the types, capabilities, or categories of communication devices that the second SSB can access, and / or the minimum bandwidth allowed for access by the second SSB. Specific implementations can be found in the third information above. In this example, the second SIB located in Band 0 and / or Band 1 supports users with low bandwidth capabilities (e.g., 5MHz, 10MHz, or 20MHz, etc.).

[0597] Optionally, since the first communication device can receive the second SIB based on the second SSB, that is, the first communication device can know the frequency domain resource location of the second SSB corresponding to the second SSB itself, the frequency domain indication of the second SSB can include the SBCI of the second SSB in the above process, thereby reducing transmission overhead.

[0598] Optionally, the frequency domain indication of the second SSB may include the specific frequency domain resource location of the second SSB, such as the frequency domain range indication (e.g., FR1, FR2, etc.) corresponding to the second SSB, band indication information (e.g., band identifier), carrier component indication information (e.g., carrier identifier), or absolute radio frequency channel number (ARFCN) indication information (e.g., new radio global frequency raster (NR global frequency raster)).

[0599] As an example, the second SIB also carries a frequency domain indication of the first SSB. For example, the second SIB may indicate at least one of the types, capabilities, or categories of communication devices that the first SSB can access, and / or the minimum bandwidth that the first SSB is allowed to access. Specific implementations can be found in the third information above. In this example, the first SIB located in Band 3 supports eMBB users and has a high bandwidth capability (e.g., 50 MHz).

[0600] Optionally, since the first communication device may not know the frequency domain resource location of the first SSB before receiving the first SSB, the frequency domain indication of the first SSB may include the SBCI of the first SSB in the above process, thereby reducing transmission overhead.

[0601] Optionally, the frequency domain indication of the first SSB may include the specific frequency domain resource location of the first SSB. The implementation of such frequency domain resource location can refer to the implementation process of the specific frequency domain resource location of the second SSB described above.

[0602] As can be seen from the above process, after receiving the SSB and the SIB corresponding to the SSB, if the first communication device determines that at least one of its own type, capability, or category matches the received SSB, then the first communication device receives the SIB based on the SIB, and subsequently selects a random access resource that matches at least one of its own type, capability, or category based on the received SIB to send the second information.

[0603] Alternatively, after receiving an SSB and its corresponding SIB, if the first communication device determines that at least one of its own type, capability, or category does not match the received SSB, then the first communication device receives other SSBs that match at least one of its own type, capability, or category based on the SIB, and subsequently selects a random access resource that matches at least one of its own type, capability, or category based on the SIB corresponding to the other SSB to send the second information.

[0604] Thus, the first communication device can obtain downlink synchronization through an SSB that matches at least one of its own type, capability, or category, and can also initiate random access through a random access resource that matches at least one of its own type, capability, or category. This enables the initial access process to identify at least one of the communication device's type, capability, or category and to quickly complete the SSB handover search, thereby reducing communication latency.

[0605] The frequency domain indication carried by the first SSB will be described in illustrative terms below through some implementation examples.

[0606] Example 1: The frequency domain indication carried by the first SSB is the frequency domain location indication within the Uni-carrier.

[0607] In Example 1, the frequency domain resources carrying the first SSB and the frequency domain resources carrying the second SSB are located in the same Uni-carrier. In other words, the SSBs on at least two frequency domain resources in the same Uni-carrier satisfy at least one of the following: associated with different communication device types, associated with different communication device capabilities, or associated with different communication device categories.

[0608] For example, when a first communication device detects a first SSB, the first SIB corresponding to the first SSB includes at least one of the communication device type, capability, or category associated with the first SSB, and at least one of the communication device type, capability, or category associated with the second SSB, as well as the frequency domain indication of the second SSB. Thus, when at least one of the type, capability, or category of the first communication device is associated with the first SSB, the first communication device can perform downlink synchronization, cell access, etc., based on the first SSB. When at least one of the type, capability, or category of the first communication device is associated with the second SSB, the first communication device can receive the second SSB based on the frequency domain indication of the second SSB and perform downlink synchronization, cell access, etc., based on the second SSB, avoiding SSB searching across the entire frequency band, reducing access latency, and achieving fast SSB reception.

[0609] As an example, the frequency domain indication of the second SSB can be absolute frequency domain resource location information.

[0610] For example, the frequency domain indication of the second SSB may include at least one of the following: frequency domain range indication (e.g., FR1, FR2, etc.), band indication information (e.g., band identifier), carrier component carrier indication information (e.g., carrier identifier), Uni-carrier indication information (e.g., Uni-carrier identifier), or ARFCN indication information (e.g., NR global frequency raster).

[0611] Optionally, when the first SIB contains a frequency domain indication of the second SSB, the first SIB may indicate at least one of the following: the type, capability, or category of the communication device associated with the second SSB.

[0612] For example, the ARFCN information defined in the current protocol includes: a global frequency grid defining a set of radio frequency (RF) reference frequencies, denoted as F. REF (Unit: MHz), and. The RF reference frequency is used in signaling to identify the location of RF channels, SSBs, and other channels / signals.

[0613] The global frequency grid is defined as all frequencies in the range of 0 to 100 GHz. The granularity of the global frequency grid is ΔF. lobal .

[0614] Optionally, for the FR1 band, the RF reference frequency is specified by the NR-ARFCN (NR Absolute Radio Frequency Channel Number) in the global frequency grid, ranging from (0...2016666). The NR frequency and the RF reference frequency F...REF The relationship between them satisfies: F REF =F REF-Offs +ΔF lobal (N REF -N REF-Offs );

[0615] Where, N REF Indicates the NR absolute radio frequency channel number (NR-ARFCN), N REF-Offs Indicates the use of N to calculate REF Offset (used for calculating N) REF ), F REF-Offs Indicates the use of F for calculation REF The offset.

[0616] Optionally, in the FR1 scenario, the values ​​of the above parameters can be determined using Table 15.

[0617] Table 15

[0618] Optionally, for the FR2 band, the RF reference frequency is specified by the NR-ARFCN in the global frequency grid, ranging from (2016667...3279165). The NR frequency and the RF reference frequency F... REF The relationship between them satisfies: F REF =F REF-Offs +ΔF lobal (N REF -N REF-Offs );

[0619] Where, N REF Indicates the NR absolute radio frequency channel number (NR-ARFCN), N REF-Offs Indicates the use of N to calculate REF Offset (used for calculating N) REF ), F REF-Offs Indicates the use of F for calculation REF The offset.

[0620] Optionally, in the FR2 scenario, the values ​​of the above parameters can be determined using Table 16.

[0621] Table 16

[0622] As another example, the frequency domain indication of the second SSB can be relative frequency domain resource location information.

[0623] For example, the frequency domain indication of the second SSB may be an offset relative to the frequency domain resource location of the first SSB.

[0624] For example, the frequency domain indication of the second SSB can indicate the offset bandwidth, the number of offset RBGs, the number of offset RBs, etc.

[0625] For example, the frequency domain indication of the second SSB can be an offset relative to the center position of the first SSB, or an offset relative to the minimum frequency domain subcarrier position of the first SSB, an offset relative to the maximum frequency domain subcarrier position of the first SSB, an offset relative to the minimum numbered resource block of the first SSB, or an offset relative to the maximum numbered resource block of the first SSB.

[0626] Example 2: The frequency domain indication carried by the first SSB is a frequency domain location indication across the Uni-carrier.

[0627] In Example 2, the frequency domain resources carrying the first SSB and the frequency domain resources carrying the second SSB are located on different Uni-carriers. In other words, the SSBs on at least two different Uni-carriers satisfy at least one of the following: are associated with different communication device types, are associated with different communication device capabilities, or are associated with different communication device categories.

[0628] For example, when a first communication device detects a first SSB, the first SIB corresponding to the first SSB includes at least one of the communication device type, capability, or category associated with the first SSB, and at least one of the communication device type, capability, or category associated with the second SSB, as well as the frequency domain indication of the second SSB. Thus, when at least one of the type, capability, or category of the first communication device is associated with the first SSB, the first communication device can perform downlink synchronization, cell access, etc., based on the first SSB. When at least one of the type, capability, or category of the first communication device is associated with the second SSB, the first communication device can receive the second SSB based on the frequency domain indication of the second SSB and perform downlink synchronization, cell access, etc., based on the second SSB, avoiding SSB searching across the entire frequency band, reducing access latency, and achieving fast SSB reception.

[0629] As an example, the frequency domain indication of the second SSB can be absolute frequency domain resource location information, as described in Example 1 above.

[0630] As another example, the frequency domain indication of the second SSB can be relative frequency domain resource location information, as described in Example 1 above.

[0631] Furthermore, in Examples 1 and 2 above, the first SSB can correspond to user access with high bandwidth capability, and the second SSB can correspond to user access with low bandwidth capability. In this way, the first communication device with low bandwidth capability can quickly switch to the second SSB through the first SSB corresponding to the first SSB to complete the SSB handover search, which can reduce latency. This allows the first communication device to access the network through the first SSB corresponding to high bandwidth capability and then switch to low bandwidth for communication through the low bandwidth handover instruction, thereby reducing resource configuration overhead.

[0632] Example 3: The frequency domain indication carried by the second SSB is the frequency domain location indication within the Uni-carrier.

[0633] In Example 3, the frequency domain resources carrying the first SSB and the frequency domain resources carrying the second SSB are located in the same Uni-carrier. In other words, the SSBs on at least two frequency domain resources in the same Uni-carrier satisfy at least one of the following: associated with different communication device types, associated with different communication device capabilities, or associated with different communication device categories.

[0634] For example, when the first communication device searches for the second SSB, the second SIB corresponding to the second SSB includes at least one of the communication device type, capability, or category associated with the second SSB, at least one of the communication device type, capability, or category associated with the first SSB, and the frequency domain indication of the first SSB. Thus, when at least one of the type, capability, or category of the first communication device is associated with the second SSB, the first communication device can perform downlink synchronization, cell access, etc., based on the second SSB. When at least one of the type, capability, or category of the first communication device is associated with the first SSB, the first communication device can receive the first SSB based on the frequency domain indication of the first SSB and perform downlink synchronization, cell access, etc., based on the first SSB, avoiding SSB searching across the entire frequency band, reducing access latency, and achieving fast SSB reception.

[0635] As an example, the frequency domain indication of the first SSB can be absolute frequency domain resource location information, as described in Example 1 above.

[0636] As another example, the frequency domain indication of the first SSB can be relative frequency domain resource location information, as described in Example 1 above.

[0637] For example, the frequency domain indication of the first SSB may be an offset relative to the frequency domain resource location of the second SSB.

[0638] For example, the frequency domain indication of the first SSB can indicate the offset bandwidth, the number of offset RBGs, the number of offset RBs, etc.

[0639] For example, the frequency domain indication of the first SSB can be an offset relative to the center position of the second SSB, or an offset relative to the minimum frequency domain subcarrier position of the second SSB, an offset relative to the maximum frequency domain subcarrier position of the second SSB, an offset relative to the minimum numbered resource block of the second SSB, or an offset relative to the maximum numbered resource block of the second SSB.

[0640] Example 4: The frequency domain indication carried by the second SSB is a frequency domain location indication across the Uni-carrier.

[0641] In Example 4, the frequency domain resources carrying the first SSB and the frequency domain resources carrying the second SSB are located on different Uni-carriers. In other words, the SSBs on at least two different Uni-carriers satisfy at least one of the following: associated with different communication device types, associated with different communication device capabilities, or associated with different communication device categories.

[0642] For example, when the first communication device searches for the second SSB, the second SIB corresponding to the second SSB includes at least one of the communication device type, capability, or category associated with the second SSB, at least one of the communication device type, capability, or category associated with the first SSB, and the frequency domain indication of the first SSB. Thus, when at least one of the type, capability, or category of the first communication device is associated with the second SSB, the first communication device can perform downlink synchronization, cell access, etc., based on the second SSB. When at least one of the type, capability, or category of the first communication device is associated with the first SSB, the first communication device can receive the first SSB based on the frequency domain indication of the first SSB and perform downlink synchronization, cell access, etc., based on the first SSB, avoiding SSB searching across the entire frequency band, reducing access latency, and achieving fast SSB reception.

[0643] As an example, the frequency domain indication of the first SSB can be absolute frequency domain resource location information, as described in Example 1 above.

[0644] As another example, the frequency domain indication of the first SSB can be relative frequency domain resource location information, as described in Example 1 above.

[0645] For example, the frequency domain indication of the first SSB may be an offset relative to the frequency domain resource location of the second SSB.

[0646] For example, the frequency domain indication of the first SSB can indicate the offset bandwidth, the number of offset RBGs, the number of offset RBs, etc.

[0647] For example, the frequency domain indication of the first SSB can be an offset relative to the center position of the second SSB, or an offset relative to the minimum frequency domain subcarrier position of the second SSB, an offset relative to the maximum frequency domain subcarrier position of the second SSB, an offset relative to the minimum numbered resource block of the second SSB, or an offset relative to the maximum numbered resource block of the second SSB.

[0648] Furthermore, in Examples 1 and 2 above, the first SSB can correspond to user access with high bandwidth capability, and the second SSB can correspond to user access with low bandwidth capability. In this way, the first communication device with high bandwidth capability can quickly switch to the first SSB through the second SSB corresponding to the second SSB to complete the SSB switching search, which can reduce latency. This allows the first communication device to access the network through the second SSB corresponding to low bandwidth capability and then switch to low bandwidth for communication through the high bandwidth switching instruction, thereby reducing resource configuration overhead.

[0649] Figure 5 is a schematic diagram of another implementation of the communication method provided in this application.

[0650] S501. The second communication device sends a first broadcast signal.

[0651] Accordingly, the first communication device receives the first broadcast signal. The frequency domain resources carrying the first broadcast signal are associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0652] S502. The second communication device sends the first information.

[0653] Accordingly, the first communication device receives the first information. The reception resources for the first communication device to receive the first information may be determined based on the first broadcast signal, and the first information indicates the frequency domain resources of the first broadcast signal. For example, the first information includes information about the frequency domain resources of the first broadcast signal.

[0654] Based on the scheme shown in Figure 5, the first communication device can determine the frequency domain resources for receiving broadcast signals based on at least one of its type, capability, or category, enabling the first communication device to synchronize with broadcast signals on frequency domain resources that match at least one of its type, capability, or category. Furthermore, the first information can indicate the frequency domain resources of the first broadcast signal. For example, the first information includes information about the frequency domain resources of the first broadcast signal. For example, the first information can include an index or identifier of the frequency domain resources of the first broadcast signal, such as an SBCI index. In this way, the first communication device can send second information based on the first information, and after receiving response information indicating the same frequency domain resources, the first communication device can determine that the response information of the second information is the response information corresponding to the first communication device, thus resolving random access conflicts (e.g., response information corresponding to broadcast signals with different frequency domain resources may be transmitted using the same frequency domain resources, enabling the first communication device to determine whether the response information of the second information is the response information of the first communication device based on the frequency domain resources indicated by the response information of the second information), and achieving network energy saving.

[0655] It should be noted that the implementation process of the scheme shown in Figure 5 can also refer to Figure 3 and its possible implementation methods, and achieve the corresponding technical effects.

[0656] Figure 6 is a schematic diagram of another implementation of the communication method provided in this application.

[0657] S601. The second communication device sends a second broadcast signal, and correspondingly, the first communication device receives the second broadcast signal.

[0658] S602. The second communication device sends third information, and correspondingly, the first communication device receives the third information. For example, the first communication device receives the third information based on the second broadcast signal. The third information indicates L frequency domain resources corresponding to L broadcast signals, the L broadcast signals including the first broadcast signal, and the frequency domain resource carrying the first broadcast signal being the first frequency domain resource among the L frequency domain resources, where L is an integer greater than or equal to 1; wherein the first frequency domain resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0659] S603. The second communication device sends a first broadcast signal, and correspondingly, the first communication device receives the first broadcast signal. The first broadcast signal is carried on a first frequency domain resource.

[0660] Based on the scheme shown in Figure 6, the first communication device can determine the transmission resource of the third information by receiving the second broadcast signal, and receive the third information on the transmission resource. The third information can indicate L frequency domain resources corresponding to L broadcast signals, and the first communication device can receive the first broadcast signal based on a first frequency domain resource associated with at least one of its own type, capability, or category, enabling the first communication device to synchronize based on broadcast signals on frequency domain resources matching at least one of its own type, capability, or category.

[0661] It should be noted that the implementation process of the scheme shown in Figure 6 can also refer to Figure 3 and its possible implementation methods, and achieve the corresponding technical effects.

[0662] Please refer to Figure 7. This application embodiment provides a communication device 700, which can realize the functions of the second communication device or the first communication device in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In this application embodiment, the communication device 700 can be the first communication device (or the second communication device), or it can be an integrated circuit or component inside the first communication device (or the second communication device), such as a chip.

[0663] It should be noted that the transceiver unit 702 may include a transmitting unit and a receiving unit, which are used to perform transmitting and receiving respectively.

[0664] In one possible implementation, when the device 700 is used to execute the method performed by the first communication device in the foregoing embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is used to receive first information, and the processing unit 701 is used to determine a first random access resource among N random access resources based on the first information, where N is an integer greater than 1; the transceiver unit 702 is also used to send second information, the second information being carried on the first random access resource, the first random access resource being associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0665] In one possible implementation, when the device 700 is used to execute the method performed by the second communication device in the foregoing embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the processing unit 701 is used to determine first information; the transceiver unit 702 is used to send the first information, which indicates N random access resources, where N is an integer greater than 1; the transceiver unit 702 is also used to receive second information, which is carried in a first random access resource among the N random access resources; the first random access resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0666] In one possible implementation, when the device 700 is used to perform the method executed by the first communication device in the foregoing embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is used to receive a first broadcast signal, the frequency domain resources carrying the first broadcast signal being associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device; the processing unit 701 is used to receive first information based on the first broadcast signal, the first information indicating the frequency domain resources of the first broadcast signal.

[0667] In one possible implementation, when the device 700 is used to perform the method executed by the second communication device in the foregoing embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is used to transmit a first broadcast signal, the frequency domain resources carrying the first broadcast signal being associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device; the processing unit 701 is used to transmit first information based on the first broadcast signal, the first information indicating the frequency domain resources of the first broadcast signal.

[0668] In one possible implementation, when the device 700 is used to execute the method performed by the first communication device in the foregoing embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is used to receive a second broadcast signal; the processing unit 701 is used to receive third information based on the second broadcast signal; wherein the third information indicates L frequency domain resources corresponding to L broadcast signals, the L broadcast signals include the first broadcast signal, the frequency domain resource carrying the first broadcast signal is the first frequency domain resource among the L frequency domain resources, and L is an integer greater than or equal to 1; wherein the first frequency domain resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device; the transceiver unit 702 is also used to receive the first broadcast signal on the first frequency domain resource.

[0669] In one possible implementation, when the device 700 is used to execute the method performed by the second communication device in the foregoing embodiments, the device 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is used to transmit a second broadcast signal; the processing unit 701 is used to transmit third information based on the second broadcast signal; wherein the third information indicates L frequency domain resources corresponding to L broadcast signals, the L broadcast signals include the first broadcast signal, the frequency domain resource carrying the first broadcast signal is the first frequency domain resource among the L frequency domain resources, and L is an integer greater than or equal to 1; wherein the first frequency domain resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device; the transceiver unit is used to transmit the first broadcast signal on the first frequency domain resource.

[0670] It should be noted that the information execution process of the unit of the above-mentioned communication device 700 can be specifically described in the method embodiment shown above in this application, and will not be repeated here.

[0671] Please refer to Figure 8, which is another schematic structural diagram of the communication device 800 provided in this application. The communication device 800 includes a logic circuit 801 and an input / output interface 802. The communication device 800 can be a chip or an integrated circuit.

[0672] In this context, the transceiver unit 702 shown in Figure 7 can be a communication interface, which can be the input / output interface 802 in Figure 8, and the input / output interface 802 can include an input interface and an output interface. Alternatively, the communication interface can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0673] Optionally, the input / output interface 802 is used to receive first information, and the logic circuit 801 is used to determine a first random access resource among N random access resources based on the first information, where N is an integer greater than 1; the input / output interface 802 is also used to send second information, which is carried on the first random access resource, and the first random access resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0674] Optionally, the logic circuit 801 is used to determine first information; the input / output interface 802 is used to send the first information, which indicates N random access resources, where N is an integer greater than 1; the input / output interface 802 is also used to receive second information, which is carried in the first random access resource among the N random access resources; the first random access resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

[0675] Optionally, the input / output interface 802 is used to receive a first broadcast signal, the frequency domain resources carrying the first broadcast signal being associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device; the logic circuit 801 is used to receive first information based on the first broadcast signal, the first information being used to indicate the frequency domain resources of the first broadcast signal.

[0676] Optionally, the input / output interface 802 is used to transmit a first broadcast signal, the frequency domain resources carrying the first broadcast signal being associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device; the logic circuit 801 is used to transmit first information based on the first broadcast signal, the first information being used to indicate the frequency domain resources of the first broadcast signal.

[0677] Optionally, the input / output interface 802 is used to receive a second broadcast signal; the logic circuit 801 is used to receive third information based on the second broadcast signal; wherein the third information indicates L frequency domain resources corresponding to L broadcast signals, the L broadcast signals include the first broadcast signal, the frequency domain resource carrying the first broadcast signal is the first frequency domain resource among the L frequency domain resources, and L is an integer greater than or equal to 1; wherein the first frequency domain resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device; the input / output interface 802 is also used to receive the first broadcast signal on the first frequency domain resource.

[0678] Optionally, the input / output interface 802 is used to transmit a second broadcast signal; the logic circuit 801 is used to transmit third information based on the second broadcast signal; wherein the third information indicates L frequency domain resources corresponding to L broadcast signals, the L broadcast signals include the first broadcast signal, the frequency domain resource carrying the first broadcast signal is the first frequency domain resource among the L frequency domain resources, and L is an integer greater than or equal to 1; wherein the first frequency domain resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device; the transceiver unit is used to transmit the first broadcast signal on the first frequency domain resource.

[0679] The logic circuit 801 and the input / output interface 802 can also perform other steps performed by the first or second communication device in any embodiment and achieve corresponding beneficial effects, which will not be elaborated here.

[0680] In one possible implementation, the processing unit 701 shown in FIG7 can be the logic circuit 801 in FIG8.

[0681] Optionally, the logic circuit 801 can be a processing device, the functions of which can be partially or entirely implemented in software.

[0682] Optionally, the processing apparatus may include a memory and a processor, wherein the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform the corresponding processing and / or steps in any of the method embodiments.

[0683] Optionally, the processing device may consist of only a processor. A memory for storing computer programs is located outside the processing device, and the processor is connected to the memory via circuitry / wires to read and execute the computer programs stored in the memory. The memory and processor may be integrated together or physically independent of each other.

[0684] Optionally, the processing device may be one or more chips, or one or more integrated circuits. For example, the processing device may be one or more field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), system-on-chips (SoCs), central processing units (CPUs), network processors (NPs), digital signal processors (DSPs), microcontroller units (MCUs), programmable logic devices (PLDs), or other integrated chips, or any combination of the above chips or processors.

[0685] Please refer to Figure 9, which shows the communication device 900 involved in the above embodiments provided in the embodiments of this application. Specifically, the communication device 900 can be the communication device as a terminal device in the above embodiments. The example shown in Figure 9 is that the terminal device is implemented through the terminal device (or the components in the terminal device).

[0686] The present invention provides a possible logical structure diagram of the communication device 900, which may include, but is not limited to, at least one processor 901 and a communication port 902.

[0687] In Figure 7, the transceiver unit 702 can be a communication interface, which can be the communication port 902 in Figure 9. The communication port 902 can include an input interface and an output interface. Alternatively, the communication port 902 can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0688] Further optionally, the device may also include at least one of a memory 903 and a bus 904. In the embodiments of this application, the at least one processor 901 is used to control the operation of the communication device 900.

[0689] Furthermore, the processor 901 can be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor can also be a comb...

Claims

1. A communication method, characterized in that, The method is applied to a first communication device, including: Receive first information, which is used to determine the first random access resource among N random access resources, where N is an integer greater than 1; Send a second message, the second message being carried on the first random access resource, the first random access resource being associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

2. The method according to claim 1, characterized in that, The method further includes: The first random access resource is determined based on at least one of the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

3. The method according to claim 1 or 2, characterized in that, Of the N random access resources, M random access resources correspond to M frequency domain resource groups, where M is an integer greater than 1 and less than or equal to N.

4. The method according to any one of claims 1 to 3, characterized in that, K of the N random access resources correspond to the first frequency domain resource group, where K is an integer greater than 1.

5. The method according to claim 4, characterized in that, The different random access resources among the K random access resources occupy different time-frequency resources; or, The different random access resources among the K random access resources occupy different sequence resources; or, The different random access resources among the K random access resources occupy different time-frequency resources, and the different random access resources among the K random access resources occupy different sequence resources.

6. The method according to any one of claims 1 to 5, characterized in that, Q of the N random access resources correspond to P response resources. The response resources are used to transmit response information for the second information. The P response resources correspond to P frequency domain resource groups, where Q is an integer greater than 1 and less than or equal to N, and P is a positive integer less than or equal to Q.

7. The method according to claim 6, characterized in that, The first information is used to indicate the resource location of the P response resources.

8. The method according to any one of claims 1 to 7, characterized in that, The transmission resources for the first information are determined by the first broadcast signal.

9. The method according to claim 8, characterized in that, The method further includes: The response information for receiving the second information; wherein the response information for the second information and the first broadcast signal are carried in the same frequency domain resource group of the same frequency domain resource set, or the response information for the second information and the first broadcast signal are carried in different frequency domain resource groups of the same frequency domain resource set, or the response information for the second information and the first broadcast signal are carried in different frequency domain resource sets.

10. The method according to claim 8 or 9, characterized in that, The frequency domain resources carrying the first broadcast signal are associated with at least one of the following: The type of the first communication device, the capabilities of the first communication device, or the category of the first communication device.

11. The method according to any one of claims 8 to 10, characterized in that, The method further includes: The frequency domain resources carrying the first broadcast signal are determined based on at least one of the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

12. The method according to any one of claims 9 to 11, characterized in that, The response information of the second information is used to indicate the frequency domain resources of the first broadcast signal and / or the frequency domain resources of the first random access resource.

13. The method according to claim 10 or 11, characterized in that, The method further includes: Receive the second broadcast signal; The third information is received based on the second broadcast signal; wherein the third information indicates L frequency domain resources corresponding to L broadcast signals, the L broadcast signals include the first broadcast signal, the frequency domain resource carrying the first broadcast signal is the first frequency domain resource among the L frequency domain resources, and L is an integer greater than 1.

14. The method according to claim 13, characterized in that, Meet at least one of the following: The type of communication device associated with the first broadcast signal is different from the type of communication device associated with the second broadcast signal; or, The capabilities of the communication device associated with the first broadcast signal differ from the capabilities of the communication device associated with the second broadcast signal; or, The type of communication device associated with the first broadcast signal is different from the type of communication device associated with the second broadcast signal.

15. A communication method, characterized in that, include: Send a first message, which indicates N random access resources, where N is an integer greater than 1; Receive second information, the second information being carried in a first random access resource among the N random access resources; the first random access resource is associated with at least one of the following: the type of the first communication device, the capability of the first communication device, or the category of the first communication device.

16. The method according to claim 15, characterized in that, The method further includes: Determine at least one of the following based on the first random access resource: The type of the first communication device, the capabilities of the first communication device, or the category of the first communication device.

17. The method according to claim 15 or 16, characterized in that, Of the N random access resources, M random access resources correspond to M frequency domain resource groups, where M is an integer greater than 1 and less than or equal to N.

18. The method according to any one of claims 15 to 17, characterized in that, K of the N random access resources correspond to the first frequency domain resource group, where K is an integer greater than 1.

19. The method according to claim 18, characterized in that, The different random access resources among the K random access resources occupy different time-frequency resources; or, The different random access resources among the K random access resources occupy different sequence resources; or, The different random access resources among the K random access resources occupy different time-frequency resources, and the different random access resources among the K random access resources occupy different sequence resources.

20. The method according to any one of claims 15 to 19, characterized in that, Q of the N random access resources correspond to P response resources. The response resources are used to transmit response information for the second information. The P water resources correspond to P frequency domain resource groups. Q is an integer greater than 1 and less than or equal to N, and P is a positive integer less than or equal to Q.

21. The method according to claim 20, characterized in that, The first information is used to indicate the resource location of the P response resources.

22. The method according to any one of claims 15 to 21, characterized in that, The transmission resources for the first information are determined by the first broadcast signal.

23. The method according to claim 22, characterized in that, The method further includes: Sending response information for the second information; wherein the response information for the second information and the first broadcast signal are carried in the same frequency domain resource group of the same frequency domain resource set, or the response information for the second information and the first broadcast signal are carried in different frequency domain resource groups of the same frequency domain resource set, or the response information for the second information and the first broadcast signal are carried in different frequency domain resource sets.

24. The method according to claim 22 or 23, characterized in that, The frequency domain resources carrying the first broadcast signal are associated with at least one of the following: The type of the first communication device, the capabilities of the first communication device, or the category of the first communication device.

25. The method according to claim 24, characterized in that, The method further includes: Send a second broadcast signal; Based on the second broadcast signal, a third message is sent; wherein the third message indicates L frequency domain resources corresponding to L broadcast signals, the L broadcast signals include the first broadcast signal, the frequency domain resource carrying the first broadcast signal is the first frequency domain resource among the L frequency domain resources, and L is an integer greater than or equal to 1.

26. The method according to claim 25, characterized in that, Meet at least one of the following: The type of communication device associated with the first broadcast signal is different from the type of communication device associated with the second broadcast signal; or, The capabilities of the communication device associated with the first broadcast signal differ from the capabilities of the communication device associated with the second broadcast signal; or, The type of communication device associated with the first broadcast signal is different from the type of communication device associated with the second broadcast signal.

27. A communication device, characterized in that, Includes a module for performing the method as described in any one of claims 1 to 26.

28. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions that, when executed by a communication device, implement the method as described in any one of claims 1 to 26.

29. A computer program product, characterized in that, It includes a computer program or instructions that, when executed by a computer, implement the method as described in any one of claims 1 to 26.

30. A chip or chip system, characterized in that, It includes at least one processor, said at least one processor being used to implement the method as claimed in any one of claims 1 to 26.

Images