Communication method and communication apparatus

Abstract

The present application provides a communication method and a communication apparatus, which can solve the problem regarding access flexibility, thereby improving data transmission efficiency, and can be applied to a communication system. The method comprises: a first communication apparatus receiving first information used for indicating a first access resource and a second access resource, wherein the first access resource is used for a communication apparatus corresponding to a first operator to access a network, and the second access resource is used for a communication apparatus corresponding to a second operator to access the network; and determining an access resource of the first communication apparatus on the basis of the first information and an operator corresponding to the first communication apparatus, wherein an operator corresponding to the access resource of the first communication apparatus is the same as the operator corresponding to the first communication apparatus.

Description

Communication methods and communication devices

[0001] This application claims priority to Chinese Patent Application No. 202411921803.0, filed on December 23, 2024, entitled "Communication Method and Communication 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 communication device. Background Technology

[0003] In a communication system, a network device can configure a random access resource for a terminal device. The terminal device can then send a random access request on this configured resource to access the network. However, this access method is limited by the random access resource configured by the network device and lacks flexibility. Summary of the Invention

[0004] This application provides a communication method and a communication device that can improve access flexibility.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, a communication method is provided. The communication method includes: a first communication device receiving first information, wherein the first information indicates a first access resource and a second access resource, the first access resource being used for a communication device corresponding to a first operator to access a network, and the second access resource being used for a communication device corresponding to a second operator to access a network; the first communication device determining an access resource for itself based on the first information and the operator corresponding to the first communication device, wherein the operator corresponding to the access resource of the first communication device is the same as the operator corresponding to the first communication device.

[0007] Based on the communication method provided in the first aspect, the first communication device can receive first information, which is used to indicate access resources of different operators, such as first access resources and second access resources, so as to determine access resources according to its own corresponding operator, making access more flexible.

[0008] Furthermore, when users from different operators access the internet through different random access resources, conflicts between users from different operators can be reduced, thereby improving access efficiency.

[0009] As an example, the first communication device may be a terminal device, a communication module, a circuit or chip responsible for communication functions, a chip system, or other components or parts. This communication module, circuit or chip responsible for communication functions, chip system, or other components or parts may be used in the terminal device.

[0010] The method provided in the first aspect further includes: the first communication device determines the RAR resource corresponding to the access resource of the first communication device according to the operator corresponding to the first communication device. In this way, the access resources of different operators can correspond to different RAR resources, which can realize the flexibility of RAR resources, avoid conflicts, and ensure the access efficiency of communication devices of different operators.

[0011] Secondly, a communication method is provided. The communication method includes: a second communication device determining first information, wherein the first information is used to indicate a first access resource and a second access resource, the first access resource being used for a communication device corresponding to a first operator to access a network, and the second access resource being used for a communication device corresponding to a second operator to access a network. The second communication device then transmits the first information.

[0012] Based on the communication method provided in the second aspect, the second communication device can send first information, which is used to indicate the access resources of different operators, such as first access resources and second access resources, so that the first communication device can obtain the access resources corresponding to different operators, thereby being able to determine the access resources according to its own corresponding operator, making access more flexible.

[0013] Furthermore, when users from different operators access the internet through different random access resources, conflicts between users from different operators can be reduced, thereby improving access efficiency.

[0014] As an example, the second communication device may be a network device, a communication module, a circuit or chip responsible for communication functions, a chip system, or other components or parts. This communication module, circuit or chip responsible for communication functions, chip system, or other components or parts may be used in a network device.

[0015] In one possible implementation, the frequency domain resources containing the first access resource and the second access resource are located on different frequency domain resource groups within the same frequency domain resource set, where the frequency domain resource set includes one or more frequency domain resource groups. In this way, access resources from different operators can reside in different frequency domain resource groups within the same frequency domain resource set, enabling communication devices from multiple operators to access the same set, improving resource utilization efficiency. Simultaneously, communication devices from different operators can access the set through different frequency domain resource groups, avoiding conflicts and ensuring the access efficiency of communication devices from different operators.

[0016] In one possible implementation, the frequency domain resources containing the first access resource and the second access resource are located in different frequency domain resource sets. In this way, access resources from different operators can reside in different frequency domain resource sets, meaning communication devices from different operators can access the network through different frequency domain resource sets, avoiding conflicts and ensuring the access efficiency of communication devices from different operators.

[0017] In one possible implementation, the first access resource and the second access resource are located on the same frequency domain resource group within the same frequency domain resource set, which includes multiple frequency domain resource groups. In this way, access resources from different operators can be located on the same frequency domain resource group within the same frequency domain resource set, meaning that communication devices from different operators can access the same frequency domain resource group, improving resource utilization efficiency and ensuring that different operators can access the same frequency domain resource group.

[0018] In one possible implementation, the first access resource and the second access resource differ in at least one of the following: time-domain resources, frequency-domain resources, or code-domain resources. Thus, the access resources of different operators differ in at least one of the following, including time-domain resources, frequency-domain resources, or code-domain resources. This employs orthogonal resource access, which can avoid access conflicts between communication devices from different operators and improve access efficiency.

[0019] In one possible implementation, the first information includes first configuration information and second configuration information. The first configuration information is used to determine a first access resource, and the second configuration information is used to determine a second access resource. Configuring different access resources using different configuration information allows for more flexible access resource configuration.

[0020] In one possible implementation, the first configuration information indicates at least one of the following: an identifier of a first operator, an identifier of a first frequency domain resource set, an identifier of a first frequency domain resource group, or a first parameter set; wherein the first parameter set is used to determine one or more of the following: a first code domain resource, a first time domain resource, or a first frequency domain resource, or a first random access response (RAR) resource; and / or, the second configuration information includes at least one of the following: an identifier of a second operator, an identifier of a second frequency domain resource set, an identifier of a second frequency domain resource group, or a second parameter set; wherein the second parameter set is used to determine one or more of the following: a second code domain resource, a second time domain resource, or a second frequency domain resource, or a second RAR resource; the first RAR resource is used to carry the RAR message corresponding to the first access resource, and the second RAR resource is used to carry the RAR message corresponding to the second access resource. Thus, access resources can be configured according to different indicators.

[0021] In one possible implementation, the frequency domain resources of the first RAR resource and the frequency domain resources of the first SSB are located in the same frequency domain resource set, or in different frequency domain resource sets; the frequency domain resources of the second RAR resource and the frequency domain resources of the second SSB are located in the same frequency domain resource set, or in different frequency domain resource sets; wherein, the first SSB is the SSB corresponding to the first access resource, and the second SSB is the SSB corresponding to the second access resource. Having the frequency domain resources of the first RAR resource and the first SSB in the same frequency domain resource set, or the frequency domain resources of the second RAR resource and the second SSB in the same frequency domain resource set, allows different operators to share spectrum for RAR transmission, reducing the power consumption of the second communication device and thus achieving network energy saving. Having the frequency domain resources of the first RAR resource and the first SSB in different frequency domain resource sets, or the frequency domain resources of the second RAR resource and the second SSB in different frequency domain resource sets, enables flexible RAR transmission and improves communication performance.

[0022] In one possible implementation, the SSB corresponding to the first access resource and the SSB corresponding to the second access resource can be the same SSB or different SSBs. When the SSB corresponding to the first access resource and the SSB corresponding to the second access resource are the same SSB, the resources used for transmitting the SSB can be reduced, lowering overhead and reducing the power consumption of the second communication device, thus achieving network energy saving. When the SSB corresponding to the first access resource and the SSB corresponding to the second access resource are different SSBs, multiple SSBs exist in the system, enabling flexible access, reducing SSB blind detection latency, thereby achieving fast access and improving communication performance. Furthermore, having multiple SSBs within a frequency domain resource set can adapt to the different channel characteristics of different frequency domain resources within that set, meeting different synchronization requirements and improving communication performance.

[0023] Thirdly, a communication device is provided. This communication device is used to perform the communication method described in either the first or second aspect.

[0024] In this application, the communication device described in the third aspect can be a terminal device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in the terminal device. Alternatively, the communication device can be a network device (such as a radio access network (RAN) node), a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in the network device.

[0025] It should be understood that the communication apparatus described in the third aspect includes modules, units, or means that implement the communication method described in either the first or second aspect. These modules, units, or means can be implemented in hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units for performing the functions involved in the aforementioned communication method.

[0026] Fourthly, a communication device is provided. The communication device includes a processor configured to execute the communication method described in any possible implementation of the first and second aspects.

[0027] In one possible implementation, the communication device described in the fourth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the fourth aspect and other communication devices.

[0028] In one possible implementation, the communication device described in the fourth aspect may further include a memory. This memory may be integrated with the processor or disposed separately. The memory may be used to store computer programs (or code instructions or program instructions) and / or data related to the communication method described in either the first or second aspect.

[0029] In this application, the communication device described in the fourth aspect can be a terminal device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in a terminal device. Alternatively, the communication device can be a network device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in a network device.

[0030] Fifthly, a communication device is provided. The communication device includes a processor coupled to a memory, the processor executing a computer program stored in the memory, such that the communication device performs the communication method described in any possible implementation of the first and second aspects.

[0031] In one possible implementation, the communication device described in the fifth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the fifth aspect and other communication devices.

[0032] In this application, the communication device described in the fifth aspect can be a terminal device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in a terminal device. Alternatively, the communication device can be a network device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in a network device.

[0033] A sixth aspect provides a communication device, comprising: a processor and a memory; the memory being used to store a computer program, which, when executed by the processor, causes the communication device to perform the communication method described in either the first aspect or the second aspect.

[0034] In one possible implementation, the communication device described in the sixth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the sixth aspect and other communication devices.

[0035] In this application, the communication device described in the sixth aspect can be a terminal device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in a terminal device. Alternatively, the communication device can be a network device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, the circuit with communication function, the chip, the chip system, or other components or assemblies can be applied in a network device.

[0036] A seventh aspect provides a communication device comprising: a processor; the processor being configured to be coupled to a memory, and after reading a computer program from the memory, to execute a communication method as described in either the first or second aspect according to the computer program.

[0037] In one possible implementation, the communication device described in the seventh aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the seventh aspect and other communication devices.

[0038] In this application, the communication device described in the seventh aspect can be a terminal device, a communication module, a circuit with communication function, a chip, a chip system, or other components or assemblies. The communication module, or the circuit, chip, chip system, or other components or assemblies with communication function can be applied in the terminal device. Alternatively, the communication device can be a network device (such as a radio access network (RAN) node), a communication module, a circuit, chip, chip system, or other components or assemblies with communication function. The communication module, the circuit, chip, chip system, or other components or assemblies with communication function can be applied in the network device.

[0039] Eighthly, a communication system is provided. The communication system includes one or more terminal devices and one or more network devices.

[0040] A ninth aspect provides a computer-readable storage medium comprising: a computer program or instructions; which, when executed on a computer, causes the computer to perform the communication method described in any possible implementation of the first and second aspects.

[0041] In a tenth aspect, a computer program product is provided, comprising a computer program or instructions that, when executed on a computer, cause the computer to perform the communication method described in any possible implementation of the first and second aspects.

[0042] Furthermore, the technical effects of the third to tenth aspects mentioned above can be referred to with reference to the technical effects of the communication methods described in the first and second aspects, and will not be repeated here. Attached Figure Description

[0043] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0044] Figure 2 is a schematic diagram of a frame structure provided in an embodiment of this application;

[0045] Figure 3 is a schematic diagram of another frame structure provided in an embodiment of this application;

[0046] Figure 4 is a schematic diagram of another frame structure provided in an embodiment of this application;

[0047] Figure 5 is a schematic diagram of the time slot structure provided in an embodiment of this application;

[0048] Figure 6 is a schematic diagram of one implementation of resource allocation;

[0049] Figure 7 is a schematic diagram of the relationship between REG and CCE;

[0050] Figure 8 is a schematic diagram of the architecture of a communication system when operators share access network equipment;

[0051] Figure 9 is a schematic diagram of another communication system architecture when operators share access network equipment.

[0052] Figure 10 is a schematic diagram of a frequency domain resource set provided in an embodiment of this application;

[0053] Figure 11 is a schematic diagram of another frequency domain resource set provided in an embodiment of this application;

[0054] Figure 12 shows a schematic diagram of preambles in different formats;

[0055] Figure 13 is a schematic diagram of the correspondence between SSB and RO;

[0056] Figure 14 is a schematic diagram of the competition-based RA process;

[0057] Figure 15 is a schematic diagram of the non-competitive RA process;

[0058] Figure 16 is a schematic diagram of cyclic shifting of the sequence;

[0059] Figure 17 is a schematic diagram of the duration of PRACH;

[0060] Figure 18 is a schematic diagram of the location relationship of PRACH resources;

[0061] Figure 19 shows another schematic diagram of the location relationship of PRACH resources;

[0062] Figure 20 is a flowchart illustrating a communication method provided in an embodiment of this application;

[0063] Figure 21 is a schematic diagram of the positional relationship between different access resources provided in an embodiment of this application;

[0064] Figure 22 is a schematic diagram of the positional relationship between different access resources provided in an embodiment of this application;

[0065] Figure 23 is a schematic diagram of a frequency domain positional relationship between the access resource and the SSB corresponding to the access resource provided in an embodiment of this application;

[0066] Figure 24 is a schematic diagram of another frequency domain positional relationship between the access resource and the SSB corresponding to the access resource provided in the embodiments of this application;

[0067] Figure 25 is a schematic diagram of a frequency domain positional relationship between the RAR resource and the SSB corresponding to the RAR resource provided in the embodiment of this application;

[0068] Figure 26 is a schematic diagram of another frequency domain positional relationship between the RAR resource and the SSB corresponding to the RAR resource provided in the embodiment of this application;

[0069] Figure 27 is a schematic diagram of another frequency domain positional relationship between the RAR resource and the SSB corresponding to the RAR resource provided in the embodiments of this application;

[0070] Figure 28 is a schematic diagram of the communication device provided in an embodiment of this application;

[0071] Figure 29 is a schematic diagram of the structure of the communication device provided in the embodiment of this application. Detailed Implementation

[0072] The technical solutions of this application embodiment can be applied to various communication systems, such as wireless fidelity (WiFi) systems, vehicle-to-everything (V2X) communication systems, device-to-device (D2D) communication systems, vehicle-to-everything (V2X) communication systems, 4th generation (4G) mobile communication systems, such as long term evolution (LTE) systems, 5th generation (5G) mobile communication systems, such as new radio (NR) systems, and future communication systems, etc.

[0073] This application will present various aspects, embodiments, or features relating to systems that may include multiple devices, components, modules, etc. It should be understood and appreciated that individual systems may include additional devices, components, modules, etc., and / or may not include all the devices, components, modules, etc. discussed in conjunction with the accompanying drawings. Furthermore, combinations of these approaches are also possible.

[0074] Furthermore, in the embodiments of this application, words such as "exemplarily" and "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as an "example" in this application should not be construed as being better or more advantageous than other embodiments or designs. Rather, the use of the word "example" is intended to present the concept in a specific manner.

[0075] First, in this application, "for indicating" can include both direct and indirect indication. When describing "information" for indicating A, it can include whether the information directly indicates A or indirectly indicates A, but does not necessarily mean that the information carries A.

[0076] The information indicated by a given piece of information is called the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as, but not limited to, directly indicating the information to be indicated, such as the information to be indicated itself or its index. It can also be indirectly indicated by indicating other information, where there is a relationship between the other information and the information to be indicated. It can also indicate only a part of the information to be indicated, while the other parts are known or pre-agreed upon. For example, the indication of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various pieces of information, thereby reducing the indication overhead to some extent. At the same time, common parts of various pieces of information can be identified and indicated uniformly to reduce the indication overhead caused by individually indicating the same information.

[0077] Furthermore, the specific indication method can also be any existing indication method, such as, but not limited to, the above-mentioned indication methods and their various combinations. Specific details of various indication methods can be found in existing technologies, and will not be repeated here. As described above, for example, when multiple pieces of information of the same type need to be indicated, the indication methods for different pieces of information may differ. In the specific implementation process, the required indication method can be selected according to specific needs. This application embodiment does not limit the selected indication method; therefore, the indication methods involved in this application embodiment should be understood to cover various methods that enable the party to be indicated to obtain the information to be indicated.

[0078] The information to be instructed can be sent as a whole or divided into multiple sub-information messages, and the sending period and / or timing of these sub-information messages can be the same or different. This application does not limit the specific sending method. The sending period and / or timing of these sub-information messages can be predefined, for example, according to a protocol, or configured by the transmitting device by sending configuration information to the receiving device. This configuration information can include, for example, but not limited to, higher-layer signaling and / or physical-layer signaling. For example, higher-layer signaling can include radio resource control (RRC) signaling or medium access control (MAC) layer signaling. This configuration information can include, for example, but not limited to, one or a combination of at least two of higher-layer and physical-layer signaling. MAC layer signaling includes, for example, a medium access control-control element (MAC CE); physical (PHY) layer signaling includes, for example, downlink control information (DCI).

[0079] Second, in the embodiments shown below, the first, second, and various numerical designations are merely distinctions for descriptive convenience and are not intended to limit the scope of the embodiments of this application. For example, to distinguish different indication information.

[0080] Third, "pre-defined," "pre-configured," or "pre-specified" can be achieved by pre-saving corresponding codes, tables, or other means of indicating relevant information in the device (e.g., including terminal devices and network devices), or by pre-defining them in a protocol. This application does not limit the specific implementation method. "Saving" can refer to saving in one or more memories. These memories can be separate installations or integrated into the encoder, decoder, processor, or communication device. Alternatively, some memories can be separately installed, while others are integrated into the decoder, processor, or communication device. The type of memory can be any form of storage medium, and this application does not limit this.

[0081] Fourth, the “protocol” involved in the embodiments of this application may refer to standard protocols in the field of communications, such as LTE protocols of the 3rd generation partnership project (3GPP) (such as technical specification (TS) 36, i.e., the TS36 series of technical specifications), NR protocols (such as the TS38 series of technical specifications), and related protocols applied to future communication systems. This application does not limit this.

[0082] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0083] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0084] To facilitate understanding of the embodiments of this application, the communication system applicable to the embodiments of this application will be described in detail first using the communication system shown in FIG1 as an example. Exemplarily, FIG1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application. As shown in FIG1, the communication system includes network devices (such as access network devices) and terminal devices.

[0085] As shown in Figure 1, the communication system includes at least one access network device (such as access network device 110a and access network device 110b) and at least one terminal device (such as terminal device 120a to terminal device 120j).

[0086] Terminal devices can connect to access network devices wirelessly, and access network devices can connect to the core network (not shown in Figure 1) via wired or wireless means.

[0087] Among them, access network equipment and terminal equipment can exchange information.

[0088] The communication system may also include a core network 130. Access network devices connect to the core network 130 wirelessly or via wired means. The core network devices and access network devices in the core network 130 can be independent and different physical devices, or they can be the same physical device that integrates the logical functions of the core network devices and the logical functions of the access network devices. The communication system may also include the Internet 140.

[0089] Terminal equipment can be a terminal with transceiver capabilities. This terminal equipment can also be referred to as user equipment (UE), access terminal, subscriber unit, user station, mobile station (MS), mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user apparatus. The terminal devices in the embodiments of this application may be mobile phones, cellular phones, smartphones, tablets, wireless data cards, personal digital assistants (PDAs), wireless modems, handsets, laptop computers, machine-type communication (MTC) terminals, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, smart home devices (e.g., refrigerators, televisions, air conditioners, electricity meters, etc.), intelligent robots, robotic arms, workshop equipment, wireless terminals in autonomous driving, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in telemedicine, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, vehicle-mounted terminals, and roadside units with terminal functions. The terminal device in this application can also be an onboard module, onboard unit, onboard component, onboard chip, or onboard unit, which is built into a vehicle as one or more components or units. The terminal device can also be other devices with terminal functions; for example, it can be a device that performs terminal functions in D2D communication. The embodiments of this application do not limit the device form of the terminal device. The device used to implement the function of the terminal device can be the terminal device itself; it can also be a device that supports the terminal device in implementing the function, such as a communication module, chip, chip system, other components or parts, or circuits or functional components. This device can be installed in the terminal device or used in conjunction with the terminal device. The chip system can be composed of chips or include chips and other discrete devices.Among them, the various forms of terminal devices mentioned above can also be referred to as terminal-side devices.

[0090] In this application embodiment, the access network device can be a device with wireless transceiver capabilities. For example, the access network device can be a device located in the access network (AN) of a communication system, which can be used to provide access services for terminal devices. In one possible scenario, the access network device can be a radio access network (RAN) device, such as a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), an integrated access and backhaul (IAB) node, an IAB parent node, or a base station in a future communication system. In future mobile communication systems, the access network device may also have other naming conventions, all of which are covered within the protection scope of this application embodiment, and this application does not impose any limitations on them. Alternatively, the access network device may also include 5G, such as a gNB in ​​an NR system, or one or a group (including multiple antenna panels) of antenna panels of a 5G base station, or it may be a network node constituting a gNB, a transmission point (TRP or transmission point (TP), or a transmission measurement function (TMF). Alternatively, the access network device can be a macro base station (as shown in Figure 1, 110a), a micro base station or indoor station (as shown in Figure 1, 110b), a relay node or donor node, or a wireless controller in a cloud radio access network (CRAN) scenario. Optionally, the access network device can also be a server, wearable device, vehicle, or in-vehicle equipment, etc. For example, the access network device in V2X technology can be an RSU. All or part of the functions of the access network device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (e.g., a cloud platform). The access network device in this application can also be a logical node, logical module, or software capable of implementing all or part of the access network device functions.

[0091] In another possible scenario, multiple access network devices collaborate to assist terminal devices in achieving wireless access, with each access network device performing a portion of the base station's functions. For example, the access network devices can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and DU can be configured separately or included in the same network element, such as a baseband unit (BBU). The RU can be included in radio frequency equipment or radio frequency units, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0092] In different systems, CU (or centralized unit control plane (CU-CP)) and centralized unit user plane (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 an open centralized unit (O-CU) (open CU), DU can also be called an open distributed unit (O-DU), CU-CP can also be called an open centralized unit control plane (O-CU-CP), CU-UP can also be called an open centralized unit user plane (O-CU-UP), and RU can also be called an open radio unit (O-RU). For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the CU (or CU-CP, CU-UP), DU and RU units in this application can be implemented through a software module, a hardware module, or a combination of software and hardware modules.

[0093] In this embodiment, the form of the network device (such as an access network device) is not limited. The device used to implement the function of the network device can be the network device itself; it can also be any device that supports the network device in implementing that function, such as a communication module, chip, chip system, other components or parts, or circuits or functional components. This device can be installed in the network device or used in conjunction with the network device. The chip system can be composed of chips or can include chips and other discrete devices. The network devices of the various forms described above can also be referred to as network-side devices.

[0094] It should be understood that Figure 1 is a simplified schematic diagram for ease of understanding only, and the communication system may also include other network devices and / or other terminal devices, which are not shown in Figure 1.

[0095] It should be understood that the above system application scenarios are only examples, and this application can also be applied to other scenarios, which will not be listed here.

[0096] In wireless communication systems (such as the system shown in Figure 1), wireless communication resources may include time-frequency resources. The following explanation of time-frequency resources will use an NR system as an example. It should be understood that NR can also be replaced with 5G or 5G NR.

[0097] The technical terms and related technical solutions in this application will be described below with reference to the accompanying drawings.

[0098] 1. Parameter set (numerology).

[0099] 5G NR introduces the concept of a parameter set, which includes sub-carrier spacing (SCS) and corresponding parameters such as symbol length and cyclic prefix (CP) length. Because there is a mapping relationship between SCS and symbol length / CP length, SCS is often used instead of parameter set in some literature.

[0100] For example, the parameters involved in the parameter set are shown in Table 1.

[0101] Table 1

[0102] In Table 1, μ represents the subcarrier spacing index, or μ represents the parameter set, CP length includes the normal CP length and the extended CP length, and FR represents the frequency range (FR).

[0103] 2. Frame structure.

[0104] In NR systems, time-domain units include symbols, slots, subframes, half-frames, and frames. A frame lasts for 10 milliseconds (ms). A frame can be divided into 10 subframes, numbered 0-9. Subframes numbered 0-4 form one half-frame, and subframes numbered 5-9 form another half-frame. Each subframe lasts for 1 ms. Each subframe can include one or more slots. Under normal CP, each slot includes 14 symbols; under extended CP, each slot includes 12 symbols.

[0105] For example, the number of time slots included in each subframe is related to the SCS, which can be in kilohertz (kHz). The relationship between the number of time slots included in each subframe and the SCS is shown in Table 2.

[0106] Table 2

[0107] Figure 2 shows a schematic diagram of a 5G NR frame structure, including:

[0108] Frame (wireless frame): The length is fixed at 10ms, and the frame number range is 0 to 1023.

[0109] Subframe: The length is fixed at 1ms, and the subframe number ranges from 0 to 9.

[0110] Time slot: When using normal CP, the length is 14 symbols. Since the symbol length is not fixed, the time slot length is also not fixed. When the SCS is 60kHz, extended CP can also be used, in which case the time slot length is 12 symbols. Optionally, the time slot is the smallest unit for data scheduling.

[0111] Symbol: Length is not fixed and is related to SCS. Optional, the symbol is the basic unit of modulation.

[0112] Generally, in the physical layer, a symbol can contain several sampling points, and a sampling point can be the smallest time unit of the physical layer.

[0113] Furthermore, the scheduling time unit in the 5G NR data domain is the time slot. The number of symbols contained in a time slot is fixed, but the length of the symbol is related to the SCS (Segment Classification). The following will illustrate the relationship between frames, subframes, time slots, and symbols using SCS of 30kHz and 120kHz as examples.

[0114] As shown in Figures 3 and 4, the relationships between frames, subframes, time slots, and symbols correspond to SCS values ​​of 30kHz and 120kHz, respectively.

[0115] 3. Symbol type and time slot format.

[0116] Generally, orthogonal frequency division multiplexing (OFDM) symbols include three types:

[0117] Downlink: Represented by the letter D, it is used for downlink transmission.

[0118] Uplink: Represented by the letter U, used for uplink transmission.

[0119] Flexible: Represented by the letter F, it can be used for uplink transmission as well as downlink transmission, and can also be used as a guard period (GP) or reserved resources.

[0120] Optionally, each time slot can be freely combined from these three types of symbols to form multiple time slot formats.

[0121] As shown in Figure 5, according to the time slot format defined by the protocol, the time slot type can be divided into four cases.

[0122] Case 1: Contains only the "D" symbol, often referred to as a downlink-only slot.

[0123] Case 2: Contains only the "U" symbol, often referred to as an uplink-only slot (UL-only slot).

[0124] Case 3: Contains only the "F" symbol, often referred to as a flexible-only slot.

[0125] Case 4: A time slot contains at least one "D" or "U" symbol, and the time slot also contains an "F" symbol.

[0126] Furthermore, as shown in Figure 5, Case 4 can be further divided into several sub-cases.

[0127] Case 4-1: A time slot contains more "D" symbols and fewer "F" symbols.

[0128] Case 4-2: A time slot contains more "U" symbols and fewer "F" symbols.

[0129] Case 4-3: A time slot contains more "D" symbols, fewer "F" symbols, and fewer "U" symbols.

[0130] Case 4-4: A time slot contains more "U" symbols, fewer "F" symbols, and fewer "D" symbols.

[0131] Case 4-5: A time slot contains alternating "D" symbols, "F" symbols, and "U" symbols.

[0132] As the examples above demonstrate, 5G NR's slot format design allows for symbol-level changes in uplink and downlink data, whereas LTE typically only allows for subframe-level changes. This design is more flexible and also provides a wider variety of slot types to adapt to different service types in various scenarios.

[0133] 4. Spectrum resources.

[0134] A resource element (RE) is the smallest granularity physical layer resource in 5G NR, which is one subcarrier in the frequency domain and one OFDM symbol in the time domain.

[0135] A resource block (RB) is the basic unit of channel resource allocation in the frequency domain in 5G NR. An RB can contain 12 subcarriers. Since the subcarrier spacing in 5G NR is variable, the actual bandwidth of an RB is also variable.

[0136] A resource grid (RG) is a collection of time-frequency resources. In 5G NR, it is defined as follows: For each carrier with different parameter sets, an RG is a resource set of all subcarriers in the frequency domain and all symbols within one subframe in the time domain, with the frequency domain starting at the granularity of RBs. Since different parameter sets correspond to different SCSs, and one RB consists of 12 subcarriers, the number of RBs in an RG differs depending on the parameter set for the same transmission bandwidth. An RG in the time domain is one subframe. Furthermore, uplink and downlink each define their own RGs.

[0137] Figure 6 illustrates one implementation of resource allocation. In Figure 6, a subframe in the time domain can include several OFDM symbols; an RE represents a resource with one subcarrier in the frequency domain and one OFDM symbol in the time domain; an RB contains 12 subcarriers in the frequency domain; and an RG represents a set of time-frequency resources.

[0138] A common resource block (CRB) can be understood as a collective term for all resource blocks (RBs) in 5G NR. They are numbered starting from 0, and the center frequency point of subcarrier number 0 in CRB0 is point A.

[0139] A physical resource block (PRB) refers to the RBs contained in the bandwidth part (BWP) of a UE in 5G NR. They are also numbered starting from 0 and are the basic unit of data channel scheduling.

[0140] A resource block group (RBG) is a combination of several resource block blocks (PRBs) within a bandwidth portion (BWP). Numbered starting from 0, it is the basic unit of data channel scheduling. An RBG can contain {2, 4, 8, 16} PRBs, the specific number depending on the number of RBs in the BWP and the configuration. The number of PRBs in an RBG can also be called the RGB size, and the number of RBs in a BWP can be called the BWP size. Configuration options can include Configuration 1 and Configuration 2. Table 3 below shows the relationship between the RGB size, configuration options, and BWP size.

[0141] Table 3

[0142] A resource element group (REG) is the basic unit of control channel resources. One REG represents 12 subcarriers (i.e., the width of one RB) in the frequency domain and one OFDM symbol in the time domain. Optionally, a REG can be replaced by a resource element group.

[0143] The control channel element (CCE) is the basic unit for scheduling control channel resources. One CCE consists of 6 REGs in the frequency domain.

[0144] Figure 7 shows a schematic diagram of the relationship between REG and CCE.

[0145] The above defines the time-frequency resources for NR. Future networks may use the same or different definitions. For example, future networks may 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.

[0146] 5. Channel

[0147] The Physical Reception Link Control Channel (PRxCCH) is a physical layer control channel. Generally, standard protocols describe it from the perspective of the terminal device; it's the physical layer control channel received by the terminal device, similar in function to the PDCCH in LTE and 5G. PRxCCH may be a new physical layer control channel introduced in future communication systems. Of course, future communication systems may still use PDCCH to represent the physical downlink control channel or physical transmit link control channel of the terminal device.

[0148] The Physical Reception Link Shared Channel (PRxSCH) is a physical layer data channel. Generally, standard protocols describe it from the perspective of the terminal device; it refers to the physical layer data channel received by the terminal device, similar in function to the Physical Downlink Shared Channel (PDSCH) in LTE and 5G. PRxSCH may be a newly introduced physical layer data channel in future communication systems. However, future communication systems may still use PDSCH to represent the physical downlink data channel or physical reception link data channel of the terminal device.

[0149] The Physical Transmission Link Control Channel (PTxCCH) is a physical layer control channel. Generally, standard protocols describe it from the perspective of the terminal device; it refers to the physical layer control channel transmitted by the terminal device, similar in function to the Physical Uplink Control Channel (PUCCH) in LTE and 5G. PTxCCH may be a new physical layer control channel introduced in future communication systems. However, future communication systems may still use PUCCH to represent the physical uplink control channel or physical transmission link control channel of the terminal device.

[0150] The Physical Transmission Link Shared Channel (PTxSCH) is a physical layer data channel. Generally, standard protocols describe it from the perspective of the terminal device; it refers to the physical layer data channel transmitted by the terminal device, similar in function to the Physical Uplink Shared Channel (PUSCH) in LTE and 5G. PTxSCH may be a new physical layer data channel introduced in future communication systems. However, future communication systems may still use PUSCH to represent the physical uplink data channel or physical receive link data channel of the terminal device.

[0151] 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.

[0152] Multi-operator spectrum sharing refers to the ability of multiple operators to conduct wireless network communication on the same spectrum segment, meaning multiple operators can operate in the same frequency band and share the same spectrum. For example, operator A can communicate with terminal device 1 on spectrum resource A, and operator B can also communicate with terminal device 2 on spectrum resource A.

[0153] 6. Public Land Mobile Network (PLMN).

[0154] 6.1 A PLMN is a network established and operated by a competent authority or an authorized private telecommunications entity to provide terrestrial mobile communication services to the public.

[0155] A PLMN ID is the network identifier corresponding to a PLMN, which includes the mobile country code (MCC) and the mobile network code (MNC). An operator owns one or more PLMN IDs, and each PLMN ID is globally unique.

[0156] 6.2 Classification of PLMNs.

[0157] The location of terminal devices in a mobile network changes dynamically. To ensure that terminal devices can access mobile network services normally in different locations, the access and mobility management function (AMF) in the core network manages the access and mobility of terminal devices. During the AMF's access and mobility management process, when a terminal device registers, disconnects from the network, or re-enters the network, the same PLMN will be identified as different categories. For example, the relevant concepts of PLMN can be shown in Table 4.

[0158] Table 4

[0159] When a terminal device powers on or disconnects from the network, it will trigger a search for the PLMN. Terminal devices can search for the PLMN automatically or manually.

[0160] (1) Automatic network search refers to selecting a suitable PLMN for access based on the PLMN information recorded in the memory or SIM card, according to priority. For example, the terminal device's PLMN selection status includes one of the following three states: Trying to register with the PLMN (Trying RPLMN / PLMN), Waiting for the PLMN (Wait for PLMNs / Wait for PLMNs to appear), or Successfully registered on the PLMN (On PLMN).

[0161] When attempting to register a PLMN, the terminal device prioritizes RPLMN for registration. If the registration is successful, the terminal device will enter a state of successful registration on the PLMN. If the registration fails, the terminal device will begin selecting PLMNs according to the following priority: EPLMN, EHPLMN, HPLMN, UPLMN, OPLMN, VPLMN, and other PLMNs.

[0162] If the terminal device searches for all PLMNs but still finds no available PLMN, the terminal device enters a state of waiting for a PLMN.

[0163] Once a PLMN is successfully registered, the terminal device will periodically monitor the PLMN information. When the successfully registered PLMN becomes unavailable, the terminal device will enter a state of attempting to register a new PLMN and select a new PLMN.

[0164] Waiting for a PLMN: Currently, there are no allowed or available PLMNs, and the terminal device is waiting for a PLMN to appear. The terminal device will periodically search for available PLMNs. When an available PLMN appears, the terminal device enters the state of attempting to register a PLMN and selects a new PLMN.

[0165] During the automatic network search process, the terminal device can periodically detect the PLMN and continuously change between three states of selecting the PLMN.

[0166] (2) Manual network search refers to the terminal device providing the user with a list of available PLMNs, allowing the user to choose a PLMN to connect to. When the terminal device selects a PLMN from the list of available PLMNs, initiates registration, and the registration is successful, the terminal device can obtain normal network services.

[0167] 6.3. Multiple operators share the network.

[0168] In a communication system, there may be multiple operators, and different operators can share networks. Each operator can provide communication services to its own users, and each operator has its own core network. As shown in Figure 8, taking operators A and B as examples, operators A and B share access network equipment, and each operator A and operator B corresponds to a core network. Terminal devices (which can also be understood as users) corresponding to operator A communicate with operator A's core network through the access network equipment, and terminal devices (which can also be understood as users) corresponding to operator B communicate with operator B's core network through the access network equipment.

[0169] Different operators can share networks in the following ways: independent carrier access network (RAN) sharing and multi-operator core network (MOCN) sharing.

[0170] In a shared independent carrier access network (ICN), multiple operators each have their own complete core network, and while they share RAN equipment, they do not share radio spectrum resources. In this scenario, for the core network, it's equivalent to a single set of radio equipment being divided into multiple "virtual devices," with each core network interface connecting to these "virtual" devices. For example, consider operators A and B. As shown in Figure 9(a), assuming operators A and B share a network using an ICN sharing approach, the core network elements of operator A and operator B are independent of each other. For instance, operator A's core network elements include a Mobility Management Entity (MME)1 connected to the access network equipment, a System Architecture Evolution-Gateway (SAE-GW)1 connected to MME1, and a Home Subscriber Server (HSS)1 connected to MME1. Operator B's core network elements include an MME2 connected to the access network equipment, an SAE-GW2 connected to MME2, and an HSS2 connected to MME2. Operator A and Operator B share access network equipment, but the frequencies used by different operators for providing services on the access network equipment are different. For example, Operator A uses cell 1 to provide services, while Operator B uses cell 2. Cell 1 and cell 2 use different frequencies.

[0171] In MOCN (Multi-access Network) sharing, multiple operators share the radio access network and radio spectrum resources, but not the core network equipment, thus saving operators' investment costs. Throughout the solution, operators share radio spectrum resources. Access network equipment broadcasts information indicating multiple PLMN identifiers within the same spectrum (e.g., a cell). Terminal devices can identify the multiple PLMN identifiers broadcast by the access network equipment and select the appropriate PLMN for access. For example, consider operators A and B. As shown in Figure 9(b), assuming operators A and B share the network in MOCN mode, the core network elements of operator A and operator B are independent. For example, operator A's core network elements include MME1 connected to the access network equipment, SAE-GW1 connected to MME1, and HSS1 connected to MME1; operator B's core network elements include MME2 connected to the access network equipment, SAE-GW2 connected to MME2, and HSS2 connected to MME2. Operators A and B share access network equipment, and the frequencies used by different operators for providing services on the access network equipment are the same. For example, operator A uses cell 3 to provide services, and operator B also uses cell 3 to provide services.

[0172] It is understood that the MME1 mentioned above can also be replaced by Serving General Packet Radio Service Support Node (SGSN)1, MME2 can also be replaced by SGSN2, HSS1 can also be replaced by Home Location Register (HLR)1, and HSS2 can also be replaced by HLR2.

[0173] It is understood that the core network elements in Figure 9 above are for illustrative purposes. In different evolved versions of communication systems, the core network elements may have other possible names, and the core network may include more or fewer network elements, which will not be elaborated here.

[0174] 7. Frequency domain resource set.

[0175] A frequency domain resource set refers to a collection of one or more frequency domain resource groups. A frequency domain resource set can support communication of a cell on at least one frequency domain resource group within a frequency band. For example, a frequency domain resource set may include one or more frequency domain resource groups within the same frequency band, or it may include multiple carriers within multiple frequency bands. A frequency domain resource group may include one or more component carriers (CCs), or a component carrier representing a portion of the frequency domain resources; in this case, a frequency domain resource set may include one or more carriers. It is understood that a frequency domain resource set can also be called a uni-carrier, a carrier group (CC group), and a carrier group comprising one or more frequency domain resource groups. Alternatively, a frequency domain resource set may have other possible names, which will not be elaborated upon here.

[0176] A frequency band can refer to a segment of frequency domain resources, which may include contiguous resources or discontinuous resources. Optionally, the frequency band in this application may be the operating band defined by the NR protocol in the prior art, or it may be a portion of the frequency domain resources within the operating band.

[0177] In a communication system, one or more frequency domain resource sets can be configured. For example, as shown in Figure 10, an access network device can be configured with three frequency domain resource sets: frequency domain resource set 0, frequency domain resource set 1, and frequency domain resource set 2. Frequency domain resource set 0 can include multiple frequency domain resource groups, frequency domain resource set 1 can include multiple frequency domain resource groups, and frequency domain resource set 2 can include multiple frequency domain resource groups. The same frequency domain resource set is configured using the same information or signaling. For example, the same frequency domain resource set can be configured using the same system information. When multiple frequency domain resource sets are configured in a communication system, one or more frequency domain resource sets can be configured using the same information or signaling.

[0178] Optionally, a group of frequency-domain resources within the same frequency-domain resource set is equivalent to a logical carrier. For example, groups of frequency-domain resources within the same set can share a single radio frequency channel, and / or the signals carried by groups of frequency-domain resources within the same set can be subjected to FFT operations together. Referring to frequency-domain resource sets 0 to 2 in Figure 10 above, frequency-domain resource set 0 is equivalent to a logical carrier, frequency-domain resource set 1 is equivalent to a logical carrier, and frequency-domain resource set 2 is equivalent to a logical carrier. It should be understood that some frequency-domain resources within the same frequency-domain resource set can also be equivalent to a logical carrier.

[0179] Optionally, frequency domain resource sets can be divided according to the frequency band or frequency range in which the frequency domain resource group is located. Taking a CC 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. The frequency range of FR1 is 450 MHz to 6000 MHz. FR1 can also be referred to as the 6 GHz (Sub-6 GHz) band. The frequency range of FR2 is 24250 MHz to 52600 MHz. FR2 is often referred to as the millimeter wave (mmWave) band. The frequency range of FR3 is 6000 MHz to 24250 MHz. FR3 is the band between FR1 and FR2, and is often referred to as the 24 GHz (Sub-24 GHz) band. It is understood that the frequency domain resource allocation method described here is only for illustrative purposes. 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 from the same frequency range. It is understood that each frequency range may include at least one frequency band.

[0180] The frequency band in this application can be FR1, FR2, or FR3. FR3 refers to the frequency band located between 6000MHz and 24250MHz. FR3 is the frequency band between FR1 and FR2, and can be referred to as the "Sub-24 GHz" frequency band.

[0181] The frequency ranges FR1, FR2, and FR3 in this embodiment are for illustrative purposes only. In actual implementation, other ways of dividing the frequency range may exist, which will not be elaborated here.

[0182] For two frequency domain resources in the same frequency domain resource set, they can be co-located (i.e. used for communication between the same access network device and terminal device) or non-co-located (i.e. used for communication between different access network devices and terminal devices).

[0183] The frequency domain resource set includes at least one frequency domain resource group. Optionally, a frequency domain resource group may correspond to one operator, meaning it is a dedicated frequency domain resource group for the operator. Optionally, a frequency domain resource group may correspond to multiple operators, meaning it may be a shared frequency domain resource group among the operators. A dedicated frequency domain resource group can be used by the operator corresponding to that frequency domain resource group to provide communication services for its terminal equipment. A shared frequency domain resource group can be used by any of the operators corresponding to that frequency domain resource group to provide communication services for its corresponding terminal equipment.

[0184] Optionally, the frequency domain resource set may include only one operator-specific frequency domain resource group. For example, as shown in Figure 11(a), the frequency domain resource set includes a frequency domain resource group dedicated to operator A, or as shown in Figure 11(b), the frequency domain resource set includes a frequency domain resource group dedicated to operator B.

[0185] Optionally, the frequency domain resource set may include only frequency domain resource groups shared by operators. For example, as shown in Figure 11(c), the frequency domain resource set may include frequency domain resource groups shared by operators A and B.

[0186] Optionally, the frequency domain resource set may include operator-specific frequency domain resource groups and operator-shared frequency domain resource groups. For example, as shown in Figure 11(d), the frequency domain resource set may include operator A's dedicated frequency domain resource group and a frequency domain resource group shared by operators A and B. As shown in Figure 11(e), the frequency domain resource set may include operator B's dedicated frequency domain resource group and a frequency domain resource group shared by operators A and B. As shown in Figure 11(f), the frequency domain resource set may include operator A's dedicated frequency domain resource group, operator B's dedicated frequency domain resource group, and a frequency domain resource group shared by operators A and B.

[0187] Optionally, the frequency domain resource set may include frequency domain resource groups dedicated to different operators. For example, the frequency domain resource set may include a frequency domain resource group dedicated to operator A and a frequency domain resource group dedicated to operator B. It is understood that the quantity of each type of frequency domain resource in the frequency domain resource groups in Figure 11 is for illustrative purposes only.

[0188] 8. Carrier aggregation (CA).

[0189] Carrier aggregation provides greater bandwidth to a single terminal device by aggregating multiple carrier aggregation (CCs). This allows the terminal device to enjoy bandwidth equal to the total bandwidth of all CCs, thereby increasing peak rates.

[0190] CA can be applied to 3CC aggregation scenarios. In this case, a terminal device is served by three carriers simultaneously, one of which is the primary component carrier (PCC), and the other two are secondary component carriers (SCCs). The cell where the PCC is located is called the primary cell (PCell), and the cell where the SCC is located is called the secondary cell (SCell).

[0191] Based on whether the aggregated multiple CCs belong to the same frequency band and are continuous in the frequency domain, CA can be divided into the following categories: (1) Intra-band contiguous CA, where multiple CCs belong to the same frequency band and are continuous in the frequency domain. (2) Intra-band non-contiguous CA, where multiple CCs belong to the same frequency band but are not continuous in the frequency domain. (3) Inter-band CA, where multiple CCs belong to different frequency bands. In this case, the multiple CCs are usually not continuous in the frequency domain.

[0192] 9. Technologies related to random access channel (RACH).

[0193] In the uplink access scheme, beam failure recovery and system information request (SI request) are implemented through the physical random access channel (PRACH). NR defines four long PRACH formats and nine short formats, each with different use cases. For example, a PRACH format might be suitable for one of the following scenarios: LTE rearming, large cell radius (over 100 km), coverage enhancement, or high-speed scenarios.

[0194] Different PRACH formats correspond to different cyclic prefix (CP) lengths and / or sequence lengths.

[0195] After the terminal device performs uplink synchronization, it can send a sounding reference signal (SRS). The SRS is used by access network equipment to obtain the uplink channel status and perform uplink synchronization.

[0196] Specifically, NR defines two different random access preamble formats corresponding to the preamble sequence lengths shown in Tables 5 and 6. Table 5 shows the long PRACH format. In Table 5, the subcarrier spacing Δf... RA ∈{1.25,5}kHz, leader sequence length L RA =839 has four formats for the random access preamble, and the frequency domain length of the preamble sequence corresponding to the four long formats of PRACH is L. RA , Δf RA N u , The supported restricted sets (i.e., the set of code domain parameters) are shown in Table 5; Table 6 shows the short format of PRACH. In Table 6, the subcarrier spacing Δf RA =15·2 μ kHz, preamble length L RA There are 9 formats for the random access preamble of 139.

[0197] Table 5

[0198] The frequency domain length of the preamble sequences corresponding to the nine short PRACH formats is L. RA , Δf RA N u and The supported restricted set is shown in Table 6 below.

[0199] Table 6

[0200] In Tables 5 and 6, "format" refers to the format identifier of the random access preamble, μ∈{0,1,2,3} is the preamble format subcarrier spacing index (also known as subcarrier spacing configuration), κ=64 is the spreading factor, and κ is the LTE sampling rate T. s (T s = 1 / (15000×2048) seconds) divided by the reference sampling rate T of NR c (T c =1 / (48000×4096) seconds) to obtain the value, Δf RA N is the subcarrier spacing in the random access preamble. uThe duration of the random access preamble (expressed as the number of reference time sampling points, also known as the duration of the random access sequence), This is the length of the cyclic prefix of the random access leader.

[0201] When the frequency domain length of the preamble sequence is 139, the preamble sequence occupies at least 12 RBs in the frequency domain. When the frequency domain length of the preamble sequence is 839, the preamble sequence occupies at least 70 RBs in the frequency domain. When the frequency domain length of the preamble sequence is 1151, the preamble sequence occupies at least 96 RBs in the frequency domain. With an SCS of 15kHz, the duration of the long format PRACH is 2, 4, 6, or 12 symbols, while the duration of the short format PRACH in the time domain is 1ms, 3ms, or 4ms. The relationship between the preamble cyclic prefix, sequence, and guard interval for different formats is shown in Figure 12.

[0202] There is a correspondence between PRACH and synchronization signal and physical broadcast channel block (SSB). One SSB can correspond to one or more PRACH occasions (ROs), or one RO can correspond to one or more SSBs. An SSB can be carried on the RO corresponding to that SSB; in other words, an SSB can be transmitted on the RO corresponding to that SSB. An SSB can be mapped to the RO corresponding to that SSB. For ease of understanding, the following example, using SSB1 to SSB8 and eight ROs with a frequency division multiplexing (FDM) of 4, illustrates the correspondence between SSBs and ROs.

[0203] One SSB corresponds to one RO; taking Figure 13(a) as an example, each SSB from SSB1 to SSB8 corresponds to one RO, and the SSB occupies all the spectrum resources on each RO corresponding to the SSB.

[0204] Alternatively, one SSB can correspond to two ROs; taking Figure 13(b) as an example, each SSB from SSB1 to SSB8 corresponds to two ROs, and each SSB occupies two spectrum resources on each RO corresponding to that SSB.

[0205] Alternatively, one SSB corresponds to four ROs. Referring to the example in Figure 13(c), each SSB from SSB1 to SSB8 corresponds to four ROs, and each SSB occupies one spectrum resource on each RO corresponding to that SSB.

[0206] Alternatively, one SSB corresponds to 8 ROs. Each SSB from SSB1 to SSB8 corresponds to 8 ROs. Referring to the example in Figure 13(d), each SSB occupies 1 / 2 of the spectrum resource in the same spectrum resource of each RO corresponding to that SSB. Alternatively, referring to the example in Figure 13(e), each SSB occupies 1 / 8 of the spectrum resource in each spectrum resource of each RO corresponding to that SSB.

[0207] The terminal device first receives the SSB (Solar Signal Block). Based on the beam identifier (also known as the beam index) corresponding to the SSB, it determines the PRACH transmission timing (RO). It then transmits the preamble sequence corresponding to the PRACH on the RO corresponding to the SSB, initiating initial access. The access network device receives the preamble sequence and, based on it, determines the uplink synchronization timing advance (TA) and whether the terminal device is permitted to access the network, thus completing uplink access.

[0208] Uplink access includes two modes: contention-based random access and contention-free random access.

[0209] Figure 14 is a flowchart of a competition-based RA. As shown in Figure 14, the competition-based RA includes the following steps S1401 to S1404.

[0210] S1401, the terminal device sends an RA preamble to the access network device. Correspondingly, the access network device receives the RA preamble from the terminal device.

[0211] Among them, the RA preamble is used to estimate the uplink time difference between the terminal device and the access network device.

[0212] The RA preamble can also be called the first message or message 1 (Msg1) in the RA process, or message one.

[0213] In response to the RA preamble, the access network device sends a random access response (RAR) to the terminal device in S1402. The terminal device then receives the RAR from the access network device.

[0214] The RAR includes the uplink time difference between the terminal device and the access network device. This uplink time difference is determined by the access network device based on the received RA preamble.

[0215] RAR can also be used to indicate that the access network device has successfully received the RA preamble from the terminal device.

[0216] RAR is also known as message 2 in the RA process, or message 2 (Msg2), or the second message.

[0217] RAR can be hosted on PDSCH.

[0218] S1403, the terminal device sends message three to the access network device. Correspondingly, the access network device receives message three from the terminal device.

[0219] Among them, message 3 can also be called message 3 (Msg3) or the third message.

[0220] In step S1404, the access network device sends a contention resolution message to the terminal device. Correspondingly, the terminal device receives the contention resolution message from the access network device.

[0221] Among them, the contention resolution message can also be called message 4 or message 4 (Msg4) in the RA process, or the fourth message.

[0222] S1400 may also be included before S1401.

[0223] In S1400, the access network device sends SIB broadcast information to the terminal device to configure random access resources and the preamble sequence set. The preamble in S2001 is one of the preambles in the preamble set.

[0224] Figure 15 is a flowchart of a non-contested RA. As shown in Figure 15, a non-contested RA includes the following steps S1501 to S1502.

[0225] S1501, the terminal device sends a random access preamble to the access network device. Correspondingly, the access network device receives the random access preamble from the terminal device.

[0226] For the implementation of the random access preamble, please refer to the implementation principle of the random access preamble in S1401.

[0227] Prior to S1501, the terminal device can receive system information block 1 (SIB1) to obtain the PRACH configuration from SIB1. The PRACH configuration includes the time-frequency position, time domain position, and frequency domain position for the terminal device to send the RA preamble.

[0228] S1502, the access network device sends a RAR to the terminal device. Correspondingly, the terminal device receives the RAR from the access network device.

[0229] For the implementation principle of RAR, please refer to the implementation principle of RAR in S1402 above.

[0230] Figure 15 may also include: S1500.

[0231] S1500, the access network equipment allocates the RA preamble set to the terminal equipment.

[0232] 10. Zadoff-Chu sequence (ZC sequence)

[0233] ZC sequences have zero autocorrelation and good cross-correlation, therefore, communication systems such as NR systems can use ZC sequences as root sequences for uplink synchronization.

[0234] The ZC sequence transmitted on PRACH is also called the PRACH preamble, and the following will refer to the preamble. The number of preambles in a cell is less than or equal to 64. A ZC root sequence (hereinafter referred to as the root sequence) is generated by random access sequence indexing, and multiple preambles can be obtained by cyclically shifting the root sequence.

[0235] For a given cell, if all 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. However, 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. To reduce interference between adjacent cells, the preambles for adjacent cells are obtained from different root sequences.

[0236] The first root sequence index of a cell can be indicated by the "prach-RootSequenceIndex" field in the RRC parameters. If the preamble generated by the root sequence corresponding to the first root sequence index of the cell through cyclic shift is less than 64, then the root sequence corresponding to the next root sequence index is used to continue generating the preamble until 64 preambles are generated.

[0237] The root sequence satisfies the relationship shown in formula (1).

[0238] Where, x u (i) represents the i-th element in the root sequence; L RA is the length of the preamble sequence, for example, 839 for a long sequence and 139 for a short sequence; u is the root sequence index of the ZC sequence, with values ​​ranging from 1 to 838 or 1 to 138. Where i = 0, 1, ..., L RA-1. The first root sequence index (prach-RootSequenceIndex, i.e., u in the formula) of each cell is configured to the terminal device by layer 3 (L3). If the preamble generated by the k-th root sequence and all root sequences before the k-th root sequence is less than or equal to 64, then the (k+1)-th root sequence is used to generate the preamble until 64 preambles are generated. k is a positive integer, and the initial value of k is 1. Taking a root sequence length of 139 as an example, the correspondence between each element in the root sequence and u is shown in Table 7 below.

[0239] Table 7

[0240] Circular shift:

[0241] Based on a specific ZC root sequence, more zero-correlation sequences can be generated through cyclic shifting. Cyclic shifting involves moving the sequence by a certain number of positions by concatenating the first and last elements. For example, Figure 16 illustrates a sequence of length 10 with the first and last elements shifted by 3 and 6 positions respectively.

[0242] The cyclically shifted sequence satisfies the relationship shown in formula (2): x u,v (n)=x u ((n+C v ) mod L RA (2)

[0243] Where n represents the index of the element in the preamble sequence, C v Indicates the cyclic shift value, x u,v (n) represents a root sequence of u and a cyclic shift value of C. v The nth element in the preamble sequence.

[0244] The cyclically shifted sequence satisfies the relationship shown in formula (3):

[0245] N CS The cyclic shift base length is configured to the terminal device via the "zeroCorrelationZoneConfig" signaling in the L3 parameters. Different preamble sequences are generated from ZC sequences indexed by different root sequences, and different cyclic shifts of the same root sequence can also generate different preamble sequences. These root sequences are inherently orthogonal. However, at the receiver, orthogonality is maintained only if the relative cyclic shift of two sequences is greater than the reception time difference between the sequences. Therefore, the larger the cell radius, the more important it is to maintain orthogonality. CS It will also be larger. f(v,N) CS ) for with v and N CSThe relevant function. v represents the number of preamble sequences that can be generated from a root sequence; that is, L. RA / N CS Round down, for example, L RA For 139, N CS If the value is 19, then v = 7.

[0246] Zero-correlation domain configuration and N for an unrestricted set of sequences CS The relationships between the values ​​are shown in Table 8 below.

[0247] Table 8

[0248] 11. PRACH time-domain resources.

[0249] The time domain length of different PRACH formats can be found in Tables 5 and 6. By combining this with the start position of the PRACH's time domain, the time domain resources occupied by the PRACH can be determined. The time domain position of the PRACH is determined by the PRACH configuration index, which can be configured through higher-level parameters. The PRACH configuration index can be sent to the terminal device via System Information Block 1 (SIB1). Each SSB corresponds to a different preamble index. The terminal device can first select an SSB, and then determine the preamble index based on the SSB, thereby determining the preamble.

[0250] For example, the time-domain location of a PRACH is determined by time-domain information such as frame number, subframe number, starting symbol, PRACH slot, and PRACH transmission occasion within the slot. There is a correspondence between the frame number, subframe number, starting symbol, PRACH slot, PRACH transmission occasion within the slot, and the PRACH configuration index for the time-domain location of a PRACH. In some examples, this correspondence is shown in Table 9 below.

[0251] Table 9

[0252] n SFN Let x be the system frame number, and y be time-domain parameters, where x and y are integers. Based on the frame number, subframe number, starting symbol, PRACH slot, and the PRACH transmission timing within the slot, the symbol position of the PRACH within the slot can be determined.

[0253] The position of the first symbol of PRACH satisfies the relationship shown in the following formula (4):

[0254] Where l represents the first symbol of PRACH, and l0 represents the start symbol within each time slot.

[0255] This is related to the timing of PRACH transmission within a time slot. For example, when the PRACH transmission timing value is 1, it means that PRACH occurs once per time slot, then the formula... The value is {0}. For example, when the PRACH transmission timing value is 2, it means that PRACH occurs twice in each time slot, then the formula... The expression is {0, 1}.

[0256] This indicates the number of continuous symbols for each PRACH.

[0257] This indicates the number of time slots that PRACH belongs to within a subframe.

[0258] When the PRACH SCS is {1.25, 5, 15, 60}, PRACH is the first time slot, i.e.

[0259] When PRACH SCS is {30, 120} It is related to the number of PRACH slots in a subframe.

[0260] If a subframe contains only one PRACH slot, then there is only one PRACH slot in that subframe. That is, PRACH is in the second time slot.

[0261] If a subframe contains two PRACH slots, then there are two PRACH slots within that subframe. That is, PRACH exists in both time slots.

[0262] When PRACH SCS is {480, 960} Related to the number of PRACH slots in a subframe.

[0263] When the number of PRACH slots in a subframe is 1: SCS = 480kHz When SCS = 960kHz,

[0264] When the number of PRACH slots in a subframe is 2: SCS = 480kHz When SCS = 960kHz,

[0265] The following example, using FR1 and PRACH configuration index = 200, illustrates how to obtain the index. According to Table 9, the frame number, subframe number, start symbol, PRACH slot, and PRACH transmission timing within the slot can be obtained. The preamble format is C2. X = 4, y = 1: PRACH is transmitted on the first odd-numbered frame of every four frames. Subframe index: 9.

[0266] As shown in Figure 17, if PRACH SCS = 15kHz, combined with formula (4), we can get: l = 8 + 0 * 6 + 14 * 0 = 8, which means that PRACH lasts for 6 symbols from symbol 8 on subframe 9 (i.e. slot 9).

[0267] If PRACH SCS = 30kHz, combined with formula (4), we can get: l = 8 + 0 * 6 + 14 * 1 = 22, which means that PRACH lasts for 6 symbols from symbol 22 on subframe 9 (i.e. slot = 19).

[0268] 12. Frequency domain resources occupied by PRACH.

[0269] 12.1 The number of RBs occupied by PRACH.

[0270] The number of red-base blocks (RBs) occupied by the PRACH can be determined based on the length of the root sequence corresponding to the preamble. The length of the root sequence is related to the subcarrier spacing Δf of the PRACH. RA The subcarrier spacing Δf of PUSCH and the number of RBs of PRACH (allocation expressed in the number of RBs for PUSCH) and frequency domain location parameters The correspondence between them is shown in Table 10 below.

[0271] Table 10

[0272] For example, when L RA =839. When the PRACH and PUSCH subcarrier spacings are 1.25kHz and 15kHz respectively, the bandwidth is 839*1.25=1048.75kHz. In terms of RBs with a subcarrier spacing of 15kHz, it needs to be rounded up to (1048.75 / 15 / 12)=6 RBs.

[0273] For example, when L RA =139. When the subcarrier spacing of PRACH and PUSCH is 15kHz and 30kHz respectively, the bandwidth is 139*15=2085kHz. In terms of RB with a subcarrier spacing of 30kHz, it needs to be rounded up to (2085 / 30 / 12)=6 RB.

[0274] 12.2 Starting position of frequency domain resources.

[0275] The starting position of a frequency domain resource can be determined based on its offset. The offset of a frequency domain resource is indicated by the frequency domain resource offset configuration.

[0276] Frequency domain resource offset configuration, in LTE, is relative to the uplink bandwidth start position, and in NR, it is relative to the uplink initial BWP start position. In NR, multiple frequency domain FDM ROs can be configured in the frequency domain, such as 1, 2, 4, or 8 ROs. The PRACH timing of frequency domain FDM is indicated by the higher-layer parameter msg1-FDM.

[0277] PRACH start position = (initial BWP start position) + offset. Assuming the number of configured ROs is NRA, the offset of the RACH resource relative to the BWP start position and the position of the frequency domain resources occupied by the RACH resource are shown in Figure 18.

[0278] The following example illustrates the position of PRACH. Assuming the starting RB position of the initial bandwidth BWP is RB 84, and the starting position of PRACH in the frequency domain is offset by 4 from the starting RB position of the initial bandwidth BWP, then the starting position of PRACH is RB 88.

[0279] If a terminal device has 6 PRACH RBs with an SCS of 15kHz for PRACH and an SCS of 30kHz for PUSCH, then the frequency domain position of PRACH is shown in Figure 19.

[0280] Analysis of PRACH's time and frequency resources reveals that its configuration is highly flexible. The density of PRACH in the time domain can be flexibly configured using radio frames, subframes, and time slots, with different ROs configured within a single time slot.

[0281] In the frequency domain, the start position and number of ROs of the PRACH can be flexibly configured. The higher the PRACH resource density, the shorter the waiting time for the terminal device to transmit the PRACH, and the lower the possibility of PRACH collisions between different terminal devices.

[0282] In a communication system, a network device can configure a random access resource for a terminal device, which can then send a random access request on that resource to access the network. However, this access method is limited and inflexible.

[0283] To address the aforementioned technical problems, this application provides a communication method.

[0284] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0285] It should be noted that the communication method provided in this application embodiment can be applied between any two devices shown in Figure 1, such as between a terminal device and a network device. For specific implementation, please refer to the following method embodiment, which will not be repeated here.

[0286] It should be noted that the solutions in the embodiments of this application can also be applied to other communication systems, and the corresponding names can be replaced by the names of the corresponding functions in other communication systems.

[0287] The communication method provided in the embodiments of this application will be described in detail below with reference to Figure 20.

[0288] For example, FIG20 is a schematic flowchart of a communication method provided in an embodiment of this application. This communication method can be applied to communication between a first communication device (the terminal device in the communication system provided in FIG1) and a second communication device (the access network device in the communication system provided in FIG1).

[0289] As shown in Figure 20, the communication method includes:

[0290] S2001, the second communication device determines the first information.

[0291] The first information is used to indicate the first access resource and the second access resource. The first access resource is used for the communication device corresponding to the first operator to access the network, and the second access resource is used for the communication device corresponding to the second operator to access the network.

[0292] Optionally, the second communication device may be the access network device in the communication system provided in Figure 1 above.

[0293] The communication device corresponding to the first operator is a communication device that provides communication services through the first operator, and the communication device corresponding to the second operator is a communication device that provides communication services through the second operator. The communication devices corresponding to the first and second operators can be terminal equipment, communication modules, circuits or chips responsible for communication functions, chip systems, or other components or assemblies. These communication modules, circuits or chips responsible for communication functions, chip systems, or other components or assemblies can be applied in terminal equipment.

[0294] There can be different relationships between the first access resource and the second access resource. The implementation of "there can be different relationships between the first access resource and the second access resource" will be discussed below and will not be repeated here.

[0295] In one possible implementation, the first information configures access resources, such as a first access resource and a second access resource, through configuration information. The implementation of "the first information configuring access resources through configuration information" will be discussed later and will not be elaborated upon here.

[0296] S2002, the second communication device sends the first information. Correspondingly, the first communication device receives the first information.

[0297] The first communication device can be a terminal device in the communication system provided in Figure 1. It can be understood that the first communication device is the communication device corresponding to the first operator, that is, a communication device for which the first operator provides communication services. Alternatively, the first communication device is the communication device corresponding to the second operator, that is, a communication device for which the second operator provides communication services.

[0298] Optionally, the first information can be carried in system information (SI), such as in system information block 1 (SIB). It is understood that carrying the first information in SIB1 is for illustrative purposes; in actual implementation, the first information can also be carried in other system information blocks within the system information, or in other possible messages outside of the system information, which will not be elaborated further.

[0299] Optionally, the first information can be carried in higher-level signaling, such as RRC signaling or MAC CE signaling.

[0300] Optionally, the first message can be a broadcast message or a private message for the first device. In some examples, the system message can be a broadcast message.

[0301] S2003, the first communication device determines the access resources of the first communication device based on the first information and the operator corresponding to the first communication device.

[0302] The operator corresponding to the access resource of the first communication device is the same as the operator corresponding to the first communication device. The following example uses the first operator and the second operator. Assuming the operator corresponding to the first communication device is the first operator, the first access resource corresponds to the first operator, and the second access resource corresponds to the second operator, then the access resource corresponding to the first communication device is the first access resource.

[0303] Based on the communication method provided in Figure 20, the first communication device can receive first information, which is used to indicate the access resources of different operators, such as first access resources and second access resources, so as to determine the access resources according to its own corresponding operator, making access more flexible.

[0304] Furthermore, when users from different operators access the internet through different random access resources, conflicts between users from different operators can be reduced, thereby improving access efficiency.

[0305] As mentioned above, there can be different relationships between the first access resource and the second access resource. The relationship between the first access resource and the second access resource will be explained below.

[0306] In one possible implementation, the frequency domain resources where the first access resource is located and the frequency domain resources where the second access resource is located are in different sets of frequency domain resources.

[0307] In this way, access resources from different operators can be located in different frequency domain resource sets, meaning that communication devices from different operators can access the network through different frequency domain resource sets, avoiding conflicts and ensuring the access efficiency of communication devices from different operators.

[0308] It is understood that in this embodiment, the frequency domain resource set can be configured by the access network device. The frequency domain resource set may include a frequency domain resource group corresponding to one operator, and / or frequency domain resource groups corresponding to at least two operators. Specifically, the frequency domain resource group corresponding to one operator is a dedicated frequency domain resource group for that operator, and the frequency domain resource group corresponding to operator X1 is a dedicated frequency domain resource group for operator X1. For example, the frequency domain resource group corresponding to the first operator is a dedicated frequency domain resource group for the first operator, and the frequency domain resource group corresponding to the second operator is a dedicated frequency domain resource group for the second operator. The frequency domain resource group corresponding to at least two operators is a shared frequency domain resource group for the operators. In some examples, the frequency domain resource group corresponding to operators X2 and X3 is a shared frequency domain resource group for operators X2 and X3. For example, the frequency domain resource group corresponding to the first operator and the second operator is a shared frequency domain resource group for the first operator and the second operator.

[0309] In some examples, when the access network device is configured with at least two frequency domain resource sets, and one of the frequency domain resource sets contains a frequency domain resource group belonging to a first operator, while the other frequency domain resource set contains a frequency domain resource group belonging to a second operator, the frequency domain resources containing the first access resource and the second access resource are located in different frequency domain resource sets. The following example illustrates the distribution of the first and second access resources using frequency domain resource set 0 and frequency domain resource set 1 as examples. As shown in Figure 21(a), frequency domain resource set 0 includes frequency domain resources dedicated to the first operator, and frequency domain resource set 1 includes frequency domain resources dedicated to the second operator. In this case, the first access resource is located on a frequency domain resource group in frequency domain resource set 0, and the second access resource is located on a frequency domain resource group in frequency domain resource set 1. Alternatively, as shown in Figure 21(b), frequency domain resource set 0 includes frequency domain resources dedicated to the first operator, and frequency domain resource set 1 includes frequency domain resources shared by the first and second operators. In this case, the first access resource is located on a frequency domain resource group in frequency domain resource set 0, and the second access resource is located on a frequency domain resource group in frequency domain resource set 1. Alternatively, as shown in Figure 21(c), frequency domain resource set 0 includes frequency domain resources shared by the first operator and the second operator, and frequency domain resource set 1 includes frequency domain resources shared by the first operator and the second operator. In this case, the first access resource is located on a frequency domain resource group in frequency domain resource set 0, and the second access resource is located on a frequency domain resource group in frequency domain resource set 1; or, the first access resource is located on a frequency domain resource group in frequency domain resource set 1, and the second access resource is located on a frequency domain resource group in frequency domain resource set 0.

[0310] In one possible implementation, the frequency domain resources where the first access resource is located and the frequency domain resources where the second access resource is located are located on different frequency domain resource groups in the same frequency domain resource set, and the frequency domain resource set includes multiple frequency domain resource groups.

[0311] In this way, access resources from different operators can be located in different frequency domain resource groups within the same frequency domain resource set, enabling communication devices from multiple operators within the same frequency domain resource set to access the network, thereby improving resource utilization efficiency. At the same time, communication devices from different operators can access the network through different frequency domain resource groups, avoiding conflicts and ensuring the access efficiency of communication devices from different operators.

[0312] In some examples, where the frequency domain resource set configured in the access network device includes at least two frequency domain resources, and one of these resources corresponds to a first operator while the other corresponds to a second operator, the frequency domain resources containing the first access resource and the second access resource are located on different frequency domain resource groups within the same frequency domain resource set. The distribution of the first and second access resources is illustrated below using examples of frequency domain resource groups within a frequency domain resource set. As shown in Figure 22(a), at least one frequency domain resource set includes a frequency domain resource group dedicated to the first operator and a frequency domain resource group dedicated to the second operator. In this case, the first access resource is located on the frequency domain resource group dedicated to the first operator, and the second access resource is located on the frequency domain resource group dedicated to the second operator. Alternatively, as shown in Figure 22(b), at least one frequency domain resource set includes a frequency domain resource group shared by the first and second operators. In this case, the first access resource and the second access resource are each located on a frequency domain resource group shared by the first and second operators. Alternatively, as shown in Figure 22(c), at least one set of frequency domain resources includes a frequency domain resource group dedicated to a first operator and a frequency domain resource group shared by the first and second operators. The first access resource is located on the frequency domain resource group dedicated to the first operator, and the second access resource is located on the frequency domain resource group shared by the first and second operators.

[0313] In one possible implementation, the first access resource and the second access resource are located on the same frequency domain resource group in the same frequency domain resource set, which includes one or more frequency domain resource groups.

[0314] In some examples, at least one frequency domain resource set in the frequency domain resource set configured in the access network device contains corresponding operators, including a first operator and a second operator. If at least one frequency domain resource set includes frequency domain resources shared by the first operator and the second operator, the first access resource and the second access resource are located on the same frequency domain resource group in the same frequency domain resource set.

[0315] In this way, access resources from different operators can be located on the same frequency domain resource group within the same frequency domain resource set. That is, communication devices from different operators can access the same frequency domain resource group, improving resource utilization efficiency and ensuring that different operators can access the frequency domain resource group.

[0316] Optionally, the first access resource and the second access resource differ in at least one of the following: time domain resource, frequency domain resource, or code domain resource.

[0317] Thus, the access resources of different operators differ in at least one of the following aspects: time domain resources, frequency domain resources, or code domain resources. That is, by using orthogonal resource access, access conflicts between communication devices of different operators can be avoided, thereby improving access efficiency.

[0318] The time-domain resources may include at least one of radio frames, subframes, time slots, sub-time slots, symbol groups, or symbols.

[0319] In some examples, the time domain resources of the first access resource and the second access resource are different, which means that the time domain symbols occupied by the first access resource are different.

[0320] The frequency domain resources may include at least one of BWP, RBG, or RB.

[0321] In some examples, the frequency domain resources of the first access resource and the second access resource differ, meaning that the first access resource occupies at least one of the following: BWP, RBG, or RB. Code domain resources refer to sequences used for random access, such as preambles. Code domain resources may include at least one of the following: root sequence, cyclic shift, scrambling flag, or other sequence-related parameters.

[0322] In some examples, the code domain resources of the first access resource and the second access resource are different, meaning that the sequence carried by the time-frequency resource corresponding to the first access resource is different from the sequence carried by the time-frequency resource corresponding to the second access resource. The two sequences are different because they are generated from different root sequences, or from the same root sequence through different cyclic shifts.

[0323] In one possible implementation, the SSB corresponding to the first access resource and the SSB corresponding to the second access resource may be the same SSB or different SSBs.

[0324] When the SSB corresponding to the first access resource and the SSB corresponding to the second access resource are the same SSB, the resources used for transmitting the SSB can be reduced, lowering overhead and reducing the power consumption of the second communication device, thus achieving network energy saving. When the SSB corresponding to the first access resource and the SSB corresponding to the second access resource are different SSBs, the system has multiple SSBs, enabling flexible access, reducing SSB blind detection latency, and thus achieving fast access and improved communication performance. Furthermore, having multiple SSBs within a frequency domain resource set can adapt to the different channel characteristics of different frequency domain resources within that set, meeting different synchronization requirements and improving communication performance.

[0325] The resource carrying configuration information for the first access resource is indicated by the SSB corresponding to the first access resource, and the resource carrying configuration information for the second access resource is indicated by the SSB corresponding to the second access resource. The configuration information for the first access resource is used to determine the first access resource, as described below as first configuration information; the configuration information for the second access resource is used to determine the second access resource, as described below as second configuration information. For example, the configuration information for the first access resource is carried in system information block 1 (SIB1), and the location of SIB1 is indicated by the SSB. Similarly, the configuration information for the second access resource is carried in system information block 1 (SIB1), and the location of SIB1 is indicated by the SSB.

[0326] The SSB corresponding to the first access resource and the SSB corresponding to the second access resource are the same SSB, meaning that the resource used to carry the configuration information of the first access resource and the resource used to carry the configuration information of the second access resource are indicated by the same SSB. For example, the configuration information of the first access resource and the configuration information of the second access resource are carried in the same SIB1. The SSB corresponding to the first access resource and the SSB corresponding to the second access resource are different SSBs, meaning that the resource used to carry the configuration information of the first access resource is indicated by one SSB, and the resource used to carry the configuration information of the second access resource is indicated by another SSB. For example, the configuration information of the first access resource is carried in the first SIB1, and the first SIB1 is configured through the first SSB; the configuration information of the second access resource is carried in the second SIB1, and the second SIB1 is configured through the second SSB.

[0327] It is understandable that when the SSB corresponding to the first access resource and the SSB corresponding to the second access resource are the same SSB, the SSB corresponding to the first access resource and the second access resource are carried on the frequency domain resources shared by the first operator and the second operator.

[0328] Optionally, the SSB corresponding to the first access resource and the first access resource can be located on the same frequency domain resource set, and the SSB corresponding to the second access resource and the second access resource can be located on the same frequency domain resource set.

[0329] The following example illustrates the positional relationship between access resources and SSBs. Assume that the SSB corresponding to the first access resource and the SSB corresponding to the second access resource are the same SSB, as shown in Figure 23. The frequency domain resource set 0 configured in the second communication device includes a frequency domain resource group dedicated to the first operator, a frequency domain resource group dedicated to the second operator, and a frequency domain resource group shared by the first and second operators. In this case, the first access resource is located on the frequency domain resource group dedicated to the first operator in frequency domain resource set 0, the second access resource is located on the frequency domain resource group dedicated to the second operator in frequency domain resource set 0, and the SSBs corresponding to the first and second access resources are located on the frequency domain resource group shared by the first and second operators.

[0330] Optionally, the first access resource and its corresponding SSB are located in different frequency domain resource sets, and the second access resource and its corresponding SSB are located in different frequency domain resource sets.

[0331] The following example illustrates the positional relationship between access resources and SSBs. Assume that the SSB corresponding to the first access resource and the SSB corresponding to the second access resource are the same SSB, as shown in Figure 24. The frequency domain resource set configured by the second communication device includes frequency domain resource set 0, frequency domain resource set 1, and frequency domain resource set 2. The frequency domain resource group in frequency domain resource set 0 is a frequency domain resource group dedicated to the first operator, the frequency domain resource group in frequency domain resource set 1 is a frequency domain resource group dedicated to the second operator, and the frequency domain resource group in frequency domain resource set 2 is a frequency domain resource group shared by the first and second operators. Therefore, the SSBs corresponding to the first and second access resources are located on the frequency domain resource group in frequency domain resource set 2, the first access resource is located on the frequency domain resource group in frequency domain resource set 0, and the second access resource is located on the frequency domain resource group in frequency domain resource set 1.

[0332] As mentioned earlier, "First Information configures access resources through configuration information." The following explains how First Information configures access resources through configuration information.

[0333] In one possible implementation, the first information includes first configuration information and second configuration information, wherein the first configuration information is used to determine the first access resource and the second configuration information is used to determine the second access resource.

[0334] By configuring different access resources with different configuration information, the configuration of access resources becomes more flexible.

[0335] In some examples, the first access resource may include at least one of a first code domain resource, a first time domain resource, and a first frequency domain resource. The second access resource may include at least one of a second code domain resource, a second time domain resource, and a second frequency domain resource.

[0336] Optionally, the first configuration information is used to indicate at least one of the following: the identifier of the first operator, the identifier of the first frequency domain resource set, the identifier of the first frequency domain resource group, or the first parameter set; wherein, the first parameter set is used to determine one or more of the following: the first code domain resource, the first time domain resource, the first frequency domain resource, or the first random access response (RAR) resource. The first RAR resource is used to carry the RAR message corresponding to the first access resource, such as the first RAR resource being used to carry the response message of the random access request message carried on the first access resource.

[0337] Thus, access resources can be configured according to different metrics. In this embodiment, the parameter set, such as the first parameter set or the second parameter set, can be the RACH parameter set.

[0338] The first code domain resource can be a sequence corresponding to the first access resource. The first code domain resource can be determined by a first sequence parameter. In this case, optionally, the first parameter set includes the first sequence parameter. The first sequence parameter can include at least one of the following: the root sequence index of the sequence of the first code domain resource, the cyclic shift value, or the sequence format of the first code domain resource.

[0339] Optionally, the first parameter set may include a first time-domain parameter, which includes at least one of the following: the index of the subframe occupied by the first time-domain resource, the index of the time slot, or the index of the symbol.

[0340] Optionally, the first parameter set may include a first frequency domain parameter, which includes at least one of the following: the index of the BWP occupied by the first frequency domain resource, the index of the RBG, the index of the RB, the index of the starting RB, the number of RBs, or the frequency domain density.

[0341] Optionally, the first parameter set may include first RAR configuration parameters, which include information for determining the time-domain and / or frequency-domain resources occupied by the first RAR resource. The time-domain location occupied by the first RAR resource can be determined using a RAR time window. The relevant information regarding the frequency-domain resources occupied by the first RAR resource in the following section on "Frequency-Domain Resources of RAR Resources" will not be repeated here.

[0342] In some examples, the first configuration information includes the correspondence between the first operator and the first access resource.

[0343] In some examples, the frequency domain resources where the first RAR resource resides and the frequency domain resources where the first SSB resides are located in the same frequency domain resource set, or they are located in different frequency domain resource sets. Here, the first SSB is the SSB corresponding to the first access resource.

[0344] The frequency domain resources where the first RAR resource is located are in the same set as the frequency domain resources where the first SSB is located. This allows different operators to share the spectrum for RAR transmission, reducing the power consumption of the second communication device and thus achieving network energy saving. Conversely, the frequency domain resources where the first RAR resource is located are in different sets than the frequency domain resources where the first SSB is located, enabling flexible RAR transmission and improving communication performance.

[0345] Optionally, the second configuration information includes at least one of the following: the identifier of the second operator, the identifier of the second frequency domain resource set, the identifier of the second frequency domain resource group, or the second parameter set; wherein, the second parameter set is used to determine one or more of the following: the second code domain resource, the second time domain resource, the second frequency domain resource, or the second RAR resource; the second RAR resource is used to carry the RAR message corresponding to the second access resource, such as the second RAR resource being used to carry the response message of the random access request message carried on the second access resource.

[0346] Similar to the first parameter set, the second code domain resource in the second parameter set can be a sequence corresponding to the second access resource. The second code domain resource can be determined by the second sequence parameter. In this case, optionally, the second parameter set includes the second sequence parameter. The second sequence parameter can include at least one of the following: the root sequence index of the sequence of the second code domain resource, the cyclic shift value, or the sequence format of the second code domain resource.

[0347] Optionally, the second parameter set may include a second time-domain parameter, which includes at least one of the following: the index of the subframe occupied by the second time-domain resource, the index of the time slot, or the index of the symbol.

[0348] Optionally, the second parameter set may include a second frequency domain parameter, which includes at least one of the following: the index of the BWP occupied by the second frequency domain resource, the index of the RBG, the index of the RB, the index of the starting RB, the number of RBs, or the frequency domain density.

[0349] Optionally, the second parameter set may include second RAR configuration parameters, which include information for determining the time-domain and / or frequency-domain resources occupied by the second RAR resource. The time-domain location occupied by the first RAR resource can be determined using a RAR time window. The relevant information regarding the frequency-domain resources occupied by the second RAR resource is provided in the section on "Frequency-Domain Resources of RAR Resources" below and will not be repeated here.

[0350] In some examples, the second configuration information includes the correspondence between the second operator and the second access resource.

[0351] Optionally, the first set of parameters can also be used to determine the power of the signal on the first access resource.

[0352] Optionally, the second set of parameters can also be used to determine the power of the signal on the second access resource.

[0353] In some examples, the frequency domain resources where the second RAR resource is located are in the same frequency domain resource set as the frequency domain resources where the second SSB is located, or they are in different frequency domain resource sets; wherein, the second SSB is the SSB corresponding to the second access resource.

[0354] The frequency domain resources where the second RAR resource is located are in the same set as the frequency domain resources where the second SSB is located. This allows different operators to share the spectrum for RAR transmission, reducing the power consumption of the second communication device and thus achieving network energy saving. Alternatively, the frequency domain resources where the second RAR resource is located are in different sets of frequency domain resources than the frequency domain resources where the second SSB is located, which allows for flexible RAR transmission and improves communication performance.

[0355] In one possible implementation, the first information is used to indicate the first access resource, the second access resource, the PLMN identifier corresponding to the first access resource, and the PLMN identifier corresponding to the second access resource.

[0356] It is understood that an access resource corresponds to the PLMN identified by the PLMN identifier corresponding to the access resource, or to the operator to which the PLMN belongs.

[0357] Alternatively, the PLMN identifier can also be described as PLMN information, or information about the PLMN identifier, etc.

[0358] In one possible implementation, the first information is used to indicate the first access resource, the second access resource, the frequency domain resource group where the first access resource is located, and the frequency domain resource group where the second access resource is located. The operator corresponding to the frequency domain resource group where the first access resource is located includes the first operator, and the operator corresponding to the frequency domain resource group where the second access resource is located includes the second operator.

[0359] Optionally, the first information may also indicate the operator corresponding to the frequency domain resource group where the first access resource is located, and / or the operator corresponding to the frequency domain resource group where the second access resource is located.

[0360] In one possible implementation, the first information may indicate a first access resource, a second access resource, a set of frequency domain resources where the first access resource is located, and a set of frequency domain resources where the second access resource is located.

[0361] It is understood that in this embodiment, some parameters in the first configuration information and the second configuration information can be shared, such as RAR resources. In this case, RAR resources can be configured in only one configuration information. Furthermore, the first access resource and the second access resource can also be configured using the same configuration information, which can include parameters from both the first and second configuration information.

[0362] In this embodiment, the first information can be RACH configuration information, the first configuration information can be RACH resource configuration, and the second configuration information can also be RACH resource configuration. The first parameter set can be RACH configuration parameters in the RACH resource configuration, and the second parameter set can also be RACH configuration parameters in the RACH resource configuration. It is understood that the names of the first information, the first configuration information, the second configuration information, the first parameter set, and the second parameter set may change, and will not be elaborated upon here.

[0363] It is understood that in this application embodiment, the first information can also be configured with more access resources. For example, the first information can also be configured with other access resources besides the first access resource and the second access resource. In this case, the implementation principle of configuring other resources with the first information can refer to the first access resource or the second access resource. At this time, it can be understood that the first information is used to indicate the access resources corresponding to at least two operators.

[0364] The following explains how to configure access resources based on specific circumstances.

[0365] When configuring multiple access resources on a carrier-dedicated frequency domain resource group, the multiple access resources can be configured using either Method 1 or Method 2. It is understood that the aforementioned first access resource and the aforementioned second access resource can be configured according to Method 1 or Method 2, in which case the multiple access resources include both the first access resource and the second access resource.

[0366] In both Method 1 and Method 2 below, multiple access resources are configured with one SSB. The parameter set corresponding to each access resource is used to determine one or more of the following: code domain resources, time domain resources, frequency domain resources, RAR resources, or the power of the signal on the access resource.

[0367] Method 1 involves configuring multiple access resources, the frequency band of each access resource, the absolute radio frequency channel number (ARFCH) information of each access resource, the parameter set of each access resource, and the PLMN identifier. An example configuration is shown below.

[0368] Here, RACHInfoUL-SIB represents the uplink access (UL RACH) information indicated by the System Information Block (SIB). It can be a list, with one or more items corresponding to each item (e.g., NR-MultiRACHInfo). One item can correspond to an access resource (e.g., a RACH resource) in the frequency domain. The configuration information of a RACH resource can include at least one of the following: frequency domain band indication (e.g., freqBandIndicator) information for configuring the frequency band; absolute frequency point A (e.g., absoluteFrequencyPointA, ARFCH) information for configuring ARFCH; RACH configuration parameters (e.g., rach-configCommon) for configuring the parameter set; a subcarrier spacing-specific carrier (e.g., SCS-SpecificCarrier); and PLNN identifier (e.g., plmn-IdentityIndex).

[0369] Among them, freqBandIndicator contains information about absoluteFrequencyPointA, rach-configCommon, and plmn-IdentityIndex are used to configure the PLMN identifier.

[0370] The following are examples of configuring code domain resources, time domain resources, frequency domain resources, and RAR resources in the parameter set of access resources.

[0371] The RACH configuration parameters (such as rach-configCommon) include at least one of the following parameters: rach-ConfigGeneric represents the general configuration parameters of RACH; totalNumberOfRA-Preambles represents the total number of preambles; prach-RootSequenceIndex represents the root sequence 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, which can also be called cyclic shift configuration; preambleReceivedTargetPower identifies the target power for receiving the preamble; preambleTransMax represents the maximum number of preamble transmissions; powerRampingStep represents the power ramp-up step size; and ra-ResponseWindow represents the configuration information for the access response window at any time.

[0372] It is understandable that the example in Method 1 is only for illustration. In actual implementation, there may be other implementation methods, which will not be elaborated here.

[0373] Method 2: An example of configuring multiple uplink resources is shown below. Uplink resources include multiple frequency domain resource sets and / or multiple frequency domain resource groups, the RACH parameter set for each frequency domain resource, and the PLMN identifier.

[0374] Among them, MultiFrequencyBandListNR-SIB represents information on multiple frequency domain resources of the UL RACH indicated by the System Information Block (SIB). This can be a list, with one or more items corresponding to each item (e.g., NR-MultiBandInfo), where each item corresponds to a RACH resource within a frequency domain resource. NR-MultiBandInfo is used to configure multiple uplink resources. FreqBandIndicatorNR,absoluteFrequencyPointA is used to configure multiple Uni-carrier resources and / or multiple CC resources. rach-ConfigCommon is used to configure the parameter set for each access resource among the multiple access resources, and plmn-IdentityIndex is used to configure the PLMN identifier.

[0375] Examples of the sequence parameters, time-domain parameters, and frequency-domain parameters in the configuration parameter set in Method 2 are as follows.

[0376] The meanings of the same parameters in the example of Method 2 as in Method 1 can be found in the description of each parameter in Method 1, and will not be repeated here.

[0377] When configuring multiple access resources on a shared frequency domain resource group of an operator, multiple access resources can be configured using the following method 3. It is understood that the aforementioned first access resource and the aforementioned second access resource can be configured according to method 3, in which case the multiple access resources include both the first and second access resources.

[0378] Method 3 involves configuring at least one of the following for multiple access resources: the code domain resource and the operator corresponding to the code domain resource of each access resource; the time domain resource and the operator corresponding to the time domain resource of each access resource; or the frequency domain resource and the operator corresponding to the frequency domain resource of each access resource. The operator can be represented by an operator identifier.

[0379] It is understood that multiple access resources can share at least one of the following: time domain resources, frequency domain resources, or code domain resources.

[0380] The following example combines the configuration of multiple access resources with one SSB, where the parameter set corresponding to each access resource is used to determine one or more of the following: code domain resources, time domain resources or frequency domain resources, RAR resources or the power of the signal on the access resource.

[0381] The following is an example of configuring the code domain resources of each access resource and the corresponding operator for each access resource's code domain resources.

[0382] RACHseqlistNR-SIB::=SEQUENCE(SIZE(1..maxNrofMultiRACH))OF RACHseqInfo

[0383] RACHseqInfo::=SEQUENCE{

[0384] …

[0385] plmn-IdentityIndex INTEGER(1..maxPLMN),

[0386] }

[0387] Here, RACHseqlistNR-SIB represents information about multiple code domain resources of the uplink access resource (UL RACH) indicated by the system information block SIB. It can include a list, where each item in the list can correspond to a code domain information (such as RACHseqInfo) and a PLNN identifier (such as plmn-IdentityIndex).

[0388] The following is an example of configuring the frequency domain resources of each access resource and the corresponding operator for each access resource's frequency domain resources.

[0389] RACHfrelistNR-SIB::=SEQUENCE(SIZE(1..maxNrofMultiRACH))OF RACHfreInfo

[0390] RACHfreInfo::=SEQUENCE{

[0391] …

[0392] plmn-IdentityIndex INTEGER(1..maxPLMN),

[0393] }

[0394] Here, RACHfrelistNR-SIB represents information about multiple frequency domain resources of the uplink access resource (UL RACH) indicated by the system information block SIB. It can include a list, where each item in the list can correspond to a frequency domain information (such as RACHfreInfo) and a PLNN identifier (such as plmn-IdentityIndex).

[0395] The following is an example of configuring the time-domain resources of each access resource and the corresponding operator for each access resource's time-domain resources.

[0396] RACHtimelistNR-SIB::=SEQUENCE(SIZE(1..maxNrofMultiRACH))OF RACHtimeInfo

[0397] RACHtimeInfo::=SEQUENCE{

[0398] …

[0399] plmn-IdentityIndex INTEGER(1..maxPLMN),

[0400] }

[0401] Among them, RACHtimelistNR-SIB represents information on multiple time-domain resources of the uplink access resource (UL RACH) indicated by the system information block SIB. It can include a list, where each item in the list can correspond to a time-domain information (such as RACHtimeInfo) and a PLNN identifier (such as plmn-IdentityIndex).

[0402] The parameters RACHseqInfo are used to configure code domain resources, RACHtimeInfo is used to configure time domain resources, and RACHfreInfo is used to configure frequency domain resources.

[0403] In one possible implementation, the method provided in Figure 20 may also include S2004.

[0404] S2004, the second communication device sends the second information. Correspondingly, the first communication device receives the second information.

[0405] The second information is used to indicate each frequency domain resource group in one or more frequency domain resource sets, and the PLMN identifier corresponding to each frequency domain resource group.

[0406] Optionally, one or more frequency domain resource sets may include a frequency domain resource set that includes frequency domain resources dedicated to a first operator and frequency domain resources dedicated to a second operator; or, the frequency domain resource set may include a frequency domain resource group shared by multiple operators, including a first operator and a second operator.

[0407] Optionally, one or more frequency domain resource sets may include multiple frequency domain resource sets. For details on the implementation of one or more frequency domain resource sets, please refer to the relevant introduction on frequency domain resource sets; further details will not be provided here.

[0408] Optionally, the second information can be carried in a broadcast message, such as a System Information Block (SIB). In one example, the second information is carried in SIB1. It is understood that carrying the second information in SIB1 is for illustrative purposes only. In actual implementation, the second information can also be carried in other system information blocks within the system information, or it can also be carried in other possible messages outside of the system information, which will not be elaborated further.

[0409] Optionally, the second information may carry a dedicated message for the first communication device.

[0410] Optionally, the second information can be carried in higher-level signaling, such as RRC signaling or MAC CE signaling.

[0411] In one possible implementation, the method provided in Figure 20 may also include S2005.

[0412] S2005, the first communication device sends a first random access request on the access resource corresponding to the first communication device. Correspondingly, the second communication device receives the first random access request on the access resource corresponding to the first communication device.

[0413] The first random access request is used to request access to the network.

[0414] In one possible implementation, the first random access request can be a PRACH, or a preamble.

[0415] It is understood that in this embodiment, the priority of the operator-dedicated frequency domain resource group and the operator-shared frequency domain resource group may be different. Alternatively, frequency domain resource groups with different frequencies may have different priorities. When the frequency domain resource group configured with the first access resource includes frequency domain resources dedicated to the first communication device and frequency domain resource groups shared by the first communication device and other operators, the first communication device can select the first access resource for sending the first random access request according to the priority of different frequency domain resource groups.

[0416] In one possible implementation, the method shown in Figure 20 also includes S2006.

[0417] S2006, the first communication device determines the RAR resource corresponding to the access resource of the first communication device according to the operator corresponding to the first communication device.

[0418] The RAR resource corresponds to the operator of the first communication device. When the operator corresponding to the first communication device is the first operator, the RAR resource corresponding to the access resource of the first communication device is the first RAR resource. When the operator corresponding to the first communication device is the second operator, the RAR resource corresponding to the access resource of the first communication device is the second RAR resource.

[0419] In this way, access resources from different operators can correspond to different RAR resources, which can realize the flexibility of RAR resources, avoid conflicts, and ensure the access efficiency of communication devices from different operators.

[0420] Optionally, the RAR resources corresponding to the access resources of the first communication device may be configured by the second communication device, such as by the first information mentioned above, or by other possible information besides the first information.

[0421] It is understood that the second communication device can also be configured with other RAR resources besides the first RAR resources and the second RAR resources. For the implementation principles of other RAR resources, please refer to the relevant introductions of the first RAR resources or the second RAR resources, which will not be elaborated here.

[0422] In some examples, the RAR resources corresponding to the first access resource and the RAR resources corresponding to the second access resource are different.

[0423] Alternatively, RAR resources can be located on a carrier-dedicated frequency domain resource group.

[0424] For example, the first RAR resource is located on a frequency domain resource group dedicated to the first operator. The second RAR resource is located on a frequency domain resource group dedicated to the second operator.

[0425] In some examples, the RAR resources corresponding to the first access resource and the RAR resources corresponding to the second access resource are the same.

[0426] Optionally, the RAR resource can be located on frequency domain resources shared by the operators. For example, the first RAR resource corresponding to the first access resource can be located on frequency domain resources shared by the first operator and the second operator. The second RAR resource corresponding to the second access resource can be located on frequency domain resources shared by the first operator and the second operator.

[0427] In some examples, at least two access resources correspond to the same RAR resource. For example, the RAR resource corresponding to the first access resource is the same as the RAR resource corresponding to the second access resource. It is understood that in this case, the first RAR resource can be indicated solely by the first configuration information. Alternatively, the second RAR resource can be indicated solely by the second configuration information.

[0428] Optionally, the frequency domain resource group where the first RAR resource is located and the frequency domain resource group where the first SSB is located are in the same frequency domain resource set, or they are in different frequency domain resource sets. Here, the first SSB is the SSB corresponding to the first access resource.

[0429] Optionally, the SSB corresponding to the first access resource can also be understood as the SSB corresponding to the first RAR resource.

[0430] Optionally, the frequency domain resources where the second RAR resource is located and the frequency domain resources where the second SSB is located may be in the same frequency domain resource set, or they may be in different frequency domain resource sets. The second SSB is the SSB corresponding to the second access resource.

[0431] Optionally, the SSB corresponding to the second access resource can also be understood as the SSB corresponding to the second RAR resource.

[0432] Optionally, the RAR resource and the corresponding SSB are located on the same frequency domain resource group.

[0433] The SSB corresponding to a RAR resource is the SSB used to indicate the location of the configuration information of that RAR resource. The resource carrying the configuration information of a first RAR resource is indicated by the SSB corresponding to the first RAR resource, and the resource carrying the configuration information of a second RAR resource is indicated by the SSB corresponding to the second RAR resource. The configuration information of the first RAR resource is used to determine the first RAR resource, as described below as first configuration information; the configuration information of the second RAR resource is used to determine the second RAR resource, as described below as second configuration information. For example, the configuration information of the first RAR resource is carried in system information block 1 (SIB1), and the location of the scheduling information in SIB1 is indicated by the SSB. Similarly, the configuration information of the second RAR resource is carried in system information block 1 (SIB1), and the location of the scheduling information in SIB1 is indicated by the SSB.

[0434] In some examples, the first RAR resource and its corresponding SSB are located in the same frequency domain resource group, and the second RAR resource and its corresponding SSB are located in the same frequency domain resource group.

[0435] Optionally, the RAR resource and its corresponding SSB are located on the same frequency domain resource group, which can be applied to scenarios where different operators share a site, and the second communication device is configured with at least one frequency domain resource set that includes a frequency domain resource group shared by the operators. It is understood that this scenario is for illustrative purposes only. Further examples are provided below.

[0436] Assuming the first RAR resource and the second RAR resource correspond to the same SSB, as shown in Figure 25, the frequency domain resource set configured by the second communication device includes frequency domain resource set 0, which includes frequency domain resource groups 0 to 4. Among them, frequency domain resource groups 0 to 2 are frequency domain resource groups dedicated to the first operator, frequency domain resource group 3 is a frequency domain resource group dedicated to the second operator, and frequency domain resource group 4 is a frequency domain resource group shared by the first operator and the second operator. The SSB corresponding to the first RAR resource and the second RAR resource is located on the frequency domain resource in frequency domain resource group 4. The first RAR resource is located on the frequency domain resource in frequency domain resource group 4, and the second RAR resource is located on the frequency domain resource in frequency domain resource group 4.

[0437] Optionally, the RAR resource and the corresponding SSB are located on different frequency domain resource groups of the same frequency domain resource set.

[0438] In some examples, the first RAR resource and its corresponding SSB are located in different frequency domain resource groups within the same frequency domain resource set, and the second RAR resource and its corresponding SSB are located in different frequency domain resource groups within the same frequency domain resource set.

[0439] Optionally, the RAR resources and their corresponding SSBs are located on different frequency domain resource groups within the same frequency domain resource set. This can be applied to scenarios where different operators co-locate, and the second communication device is configured with at least one frequency domain resource set including operator-dedicated frequency domain resource groups and operator-shared frequency domain resource groups. It is understood that this scenario is for illustrative purposes only. Further examples are provided below.

[0440] Assuming that the first RAR resource and the second RAR resource correspond to the same SSB, as shown in Figure 26, the frequency domain resource set configured by the second communication device includes frequency domain resource set 0, which includes frequency domain resource groups 0 to 4. Among them, frequency domain resource groups 0 to 2 are frequency domain resource groups dedicated to the first operator, frequency domain resource group 3 is a frequency domain resource group dedicated to the second operator, and frequency domain resource group 4 is a frequency domain resource group shared by the first operator and the second operator. The SSB corresponding to the first RAR resource and the second RAR resource is located on the frequency domain resource in frequency domain resource group 4. The first RAR resource is located on the frequency domain resource in frequency domain resource group 1, and the second RAR resource is located on the frequency domain resource in frequency domain resource group 3.

[0441] Optionally, the RAR resources and the corresponding SSBs are located in different frequency domain resource sets.

[0442] In some examples, the first RAR resource and its corresponding SSB are located in different frequency domain resource sets, and the second RAR resource and its corresponding SSB are located in different frequency domain resource sets.

[0443] It is understandable that RAR resources and their corresponding SSBs reside in different frequency domain resource sets. This can be applied to scenarios where different operators share or do not share sites, and where operator-dedicated frequency domain resource groups and operator-shared frequency domain resource groups reside in different frequency domain resource sets. It is understood that this scenario is for illustrative purposes only. Further examples are provided below.

[0444] Assuming that the first RAR resource and the second RAR resource correspond to the same SSB, as shown in Figure 27, the frequency domain resource set configured by the second communication device includes frequency domain resource set 0 to frequency domain resource set 2. Frequency domain resource set 0 includes a frequency domain resource group dedicated to the first operator, frequency domain resource set 1 includes a frequency domain resource group dedicated to the second operator, and frequency domain resource set 2 includes a frequency domain resource group shared by the first operator and the second operator. The SSB corresponding to the first RAR resource and the second RAR resource is located on the frequency domain resource group in frequency domain resource set 2, the first RAR resource is located on the frequency domain resource group in frequency domain resource set 0, and the second RAR resource is located on the frequency domain resource group in frequency domain resource set 1.

[0445] In one possible implementation, the method provided in Figure 20 may also include S2007.

[0446] S2007, the second communication device sends a first random access response on the RAR resource corresponding to the first communication device. Correspondingly, the first communication device receives the first random access response on the RAR resource corresponding to the first communication device.

[0447] The first random access response may include at least one of the following: random access preamble identifier (RAPID), TA, temporary cell radio network identifier (TC-RNTI), uplink grant (UL Grant), contention resolution identifier, power control command, or system information.

[0448] RAPID is used to identify the random access preamble sent by the first communication device. The second communication device confirms the received preamble through RAPID and informs the first communication device that its random access request has been accepted.

[0449] The TA (Transmission Time Acquisition) parameter is used to adjust the uplink transmission time of the first communication device to ensure that the uplink signal is aligned at the second communication device. The TA value is sent in the form of a TA command, and the first communication device adjusts its transmission time according to the TA command.

[0450] The temporary C-RNTI is used to temporarily identify the first communication device during random access. The second communication device uses the temporary C-RNTI to address the first communication device in the subsequent PDCCH.

[0451] The uplink grant is used to allocate uplink resources, informing the first communication device on which time slot and frequency domain resources to send the RRC connection request or data, such as message 3 (Msg3). The uplink grant includes time resources (such as start symbol and duration) and frequency domain resources (such as start RB and bandwidth).

[0452] The contention resolution identity (CRI) is used to resolve conflicts during contention-based random access. If multiple first communication devices use the same preamble, second communication devices will use the contention resolution identity to distinguish between different first communication devices.

[0453] The power control command (PCM) is used to adjust the uplink transmission power of the first communication device. Through the power control command, the second communication device can ensure that the uplink signal from the first communication device reaches a suitable reception power at the second communication device.

[0454] In some cases, a RAR file may contain system information, such as parts of SIB1.

[0455] Optionally, the RAR can be transmitted via PDSCH, indicated by DCI format 1_0 on the PDCCH. DCI format 1_0 carries a random access-radio network temporary identifier (RA-RNTI) to identify the RAR message. The timing of RAR transmission can be that after sending the PRACH, the first communication device monitors the PDCCH within a predetermined window, searching for a DCI carrying the RA-RNTI. If the first communication device successfully detects the DCI carrying the RA-RNTI and decodes the RAR message in the PDSCH, the first communication device will perform subsequent operations based on the information in the RAR.

[0456] The communication method provided by the embodiments of this application has been described in detail above with reference to Figures 20-27. The communication apparatus used to perform the communication method provided by the embodiments of this application is described in detail below with reference to Figures 28 and 29.

[0457] For example, FIG28 is a schematic diagram of the structure of a communication device provided in an embodiment of this application. As shown in FIG28, the communication device 2800 includes a processing module 2801 and a transceiver module 2802. For ease of explanation, FIG28 only shows the main components of the communication device.

[0458] In some embodiments, the communication device 2800 may be adapted to the communication system shown in FIG1 to perform the functions of the first communication device in the communication method shown in FIG20.

[0459] The transceiver module 2802 is used to receive first information, wherein the first information is used to indicate a first access resource and a second access resource, the first access resource is used for the communication device corresponding to the first operator to access the network, and the second access resource is used for the communication device corresponding to the second operator to access the network.

[0460] The processing module 2801 is used to determine the access resources of the first communication device based on the first information and the operator corresponding to the first communication device, wherein the operator corresponding to the access resources of the first communication device is the same as the operator corresponding to the first communication device.

[0461] Optionally, the processing module 2801 is further configured to determine the RAR resources corresponding to the access resources of the first communication device based on the operator corresponding to the first communication device.

[0462] Optionally, the transceiver module 2802 may include a receiving module and a transmitting module (not shown in FIG28). The transceiver module is used to implement the transmitting and receiving functions of the communication device 2800.

[0463] Optionally, the communication device 2800 may further include a storage module (not shown in FIG. 28) that stores information such as programs, instructions, or data. The processing module 2801 can read information from the storage module, enabling the communication device 2800 to perform the functions of the first communication device in any of the communication methods shown in FIG. 20.

[0464] It should be understood that the communication device 2800 may be a terminal device, a communication module, a circuit or chip responsible for communication functions, a chip system, or other components or assemblies. This communication module, circuit or chip responsible for communication functions, chip system, or other components or assemblies can be applied in a terminal device. This application does not limit this.

[0465] Furthermore, the technical effects of the communication device 2800 can be referenced from the technical effects of the communication method shown in any of Figure 20, and will not be elaborated here.

[0466] In other embodiments, the communication device 2800 may be adapted to the communication system shown in FIG1 to perform the functions of the second communication device in the communication method shown in FIG20.

[0467] The processing module 2801 is used to determine first information, wherein the first information is used to indicate a first access resource and a second access resource, the first access resource is used for the communication device corresponding to the first operator to access the network, and the second access resource is used for the communication device corresponding to the second operator to access the network.

[0468] The transceiver module 2802 is used to send the first message.

[0469] Optionally, the communication device 2800 may further include a storage module (not shown in FIG. 28) that stores information such as programs, instructions, or data. The processing module 2801 can read information from the storage module, enabling the communication device 2800 to perform the functions of the second communication device in the communication method shown in FIG. 20.

[0470] It should be noted that the communication device 2800 can be a network device, a communication module, a circuit or chip responsible for communication functions, a chip system, or other components or assemblies. This communication module, the circuit or chip responsible for communication functions, the chip system, or other components or assemblies can be used in network devices.

[0471] Furthermore, the technical effects of the communication device 2800 can be referred to in the technical effects of the communication methods shown in any of Figure 20, and will not be elaborated here.

[0472] It should be understood that when the communication device 2800 is used to perform the functions of the first terminal device or to perform the functions of the access network device, the processing module 2801 involved in the communication device 2800 can be implemented by a processor or processor-related circuit components, and can be a processor or processing unit; the transceiver module 2802 can be implemented by a transceiver or transceiver-related circuit components or a communication interface.

[0473] For example, Figure 29 is a second schematic diagram of the structure of a communication device provided in an embodiment of this application. This communication device can be a terminal device or a network device, or it can be a chip (system) or other component or assembly that can be disposed in a terminal device or network device. As shown in Figure 29, the communication device 2900 may include a processor 2901. Optionally, the communication device 2900 may also include a memory 2902 and / or a transceiver 2903. The processor 2901 is coupled to the memory 2902 and the transceiver 2903, and may be connected via a communication bus.

[0474] The following section, with reference to Figure 29, provides a detailed description of each component of the communication device 2900:

[0475] The processor 2901 is the control center of the communication device 2900. It can be a single processor or a collective term for multiple processing elements. For example, the processor 2901 can be one or more central processing units (CPUs), application-specific integrated circuits (ASICs), or one or more integrated circuits configured to implement the embodiments of this application, such as one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs).

[0476] Optionally, the processor 2901 can perform various functions of the communication device 2900 by running or executing software programs stored in the memory 2902 and calling data stored in the memory 2902.

[0477] In a specific implementation, as one example, processor 2901 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG29.

[0478] In a specific implementation, as one embodiment, the communication device 2900 may also include multiple processors, such as processors 2901 and 2904 shown in FIG. 29. Each of these processors may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). Here, a processor may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0479] The memory 2902 is used to store the software program that executes the solution of this application, and is controlled by the processor 2901 to execute it. The specific implementation method can be referred to the above method embodiment, and will not be repeated here.

[0480] Optionally, the memory 2902 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. The memory 2902 may be integrated with the processor 2901 or may exist independently and be coupled to the processor 2901 through the interface circuit of the communication device 2900 (not shown in FIG. 29). This application embodiment does not specifically limit this.

[0481] Transceiver 2903 is used for communication with other communication devices. For example, if communication device 2900 is a terminal device, transceiver 2903 can be used to communicate with a network device or with another terminal device. As another example, if communication device 2900 is a network device, transceiver 2903 can be used to communicate with a terminal device or with another network device.

[0482] Optionally, transceiver 2903 may include a receiver and a transmitter (not shown separately in Figure 29). The receiver is used to implement the receiving function, and the transmitter is used to implement the transmitting function.

[0483] Optionally, the transceiver 2903 can be integrated with the processor 2901 or exist independently and be coupled to the processor 2901 through the interface circuit of the communication device 2900 (not shown in FIG29). This application embodiment does not specifically limit this.

[0484] It should be noted that the structure of the communication device 2900 shown in Figure 29 does not constitute a limitation on the communication device. The actual communication device may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0485] Furthermore, the technical effects of the communication device 2900 can be referred to the technical effects of the communication method described in the above method embodiments, and will not be repeated here.

[0486] This application provides a communication system. The communication system includes one or more terminal devices and one or more network devices.

[0487] It should be understood that the processor in the embodiments of this application can be a CPU, but it can also be other general-purpose processors, DSPs, ASICs, FPGAs, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc.

[0488] It should also be understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory can be ROM, programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), EEPROM, or flash memory. Volatile memory can be RAM, which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0489] The above embodiments can be implemented, in whole or in part, by software, hardware (such as circuits), firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive.

[0490] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural. Additionally, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects, but it can also represent an "and / or" relationship. Please refer to the context for a more accurate understanding.

[0491] In this application, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0492] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0493] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0494] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0495] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0496] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0497] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0498] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0499] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, Applied to a first communication device, the method includes: Receive first information, wherein the first information is used to indicate a first access resource and a second access resource, the first access resource is used for a communication device corresponding to a first operator to access the network, and the second access resource is used for a communication device corresponding to a second operator to access the network. The access resources of the first communication device are determined based on the first information and the operator corresponding to the first communication device, and the operator corresponding to the access resources of the first communication device is the same as the operator corresponding to the first communication device.

2. The method according to claim 1, characterized in that, The method further includes: The RAR resources corresponding to the access resources of the first communication device are determined based on the operator corresponding to the first communication device.

3. A communication method, characterized in that, Applied to a second communication device, the method includes: First information is determined, wherein the first information is used to indicate a first access resource and a second access resource, the first access resource is used for a communication device corresponding to a first operator to access the network, and the second access resource is used for a communication device corresponding to a second operator to access the network. Send the first message.

4. The method according to any one of claims 1-3, characterized in that, The frequency domain resources where the first access resource is located and the frequency domain resources where the second access resource is located are located on different frequency domain resource groups in the same frequency domain resource set, and the frequency domain resource set includes one or more frequency domain resource groups.

5. The method according to any one of claims 1-3, characterized in that, The frequency domain resources where the first access resource is located and the frequency domain resources where the second access resource is located are located in different frequency domain resource sets.

6. The method according to any one of claims 1-3, characterized in that, The first access resource and the second access resource are located on the same frequency domain resource group in the same frequency domain resource set, which includes multiple frequency domain resource groups.

7. The method according to claim 6, characterized in that, The first access resource and the second access resource differ from each other in at least one of the following: time domain resource, frequency domain resource, or code domain resource.

8. The method according to any one of claims 1-6, characterized in that, The first information includes first configuration information and second configuration information. The first configuration information is used to determine the first access resource, and the second configuration information is used to determine the second access resource.

9. The method according to claim 8, characterized in that, The first configuration information is used to indicate at least one of the following: the identifier of the first operator, the identifier of the first frequency domain resource set, the identifier of the first frequency domain resource group, or the first parameter set; wherein, the first parameter set is used to determine one or more of the following: the first code domain resource, the first time domain resource, or the first frequency domain resource, or the first random access response (RAR) resource; And / or, The second configuration information includes at least one of the following: the identifier of the second operator, the identifier of the second frequency domain resource set, the identifier of the second frequency domain resource group, or the second parameter set; wherein, the second parameter set is used to determine one or more of the following: the second code domain resource, the second time domain resource, the second frequency domain resource, or the second RAR resource; The first RAR resource is used to carry the RAR message corresponding to the first access resource, and the second RAR resource is used to carry the RAR message corresponding to the second access resource.

10. The method according to claim 9, characterized in that, The frequency domain resources where the first RAR resource is located are in the same frequency domain resource set as the frequency domain resources where the first SSB is located, or they are in different frequency domain resource sets; The frequency domain resources where the second RAR resource is located are in the same frequency domain resource set as the frequency domain resources where the second SSB is located, or they are in different frequency domain resource sets; Wherein, the first SSB is the SSB corresponding to the first access resource, and the second SSB is the SSB corresponding to the second access resource.

11. The method according to any one of claims 1-10, characterized in that, The SSB corresponding to the first access resource and the SSB corresponding to the second access resource are either the same SSB or different SSBs.

12. A communication device, characterized in that, The communication device includes a module for performing the method as described in any one of claims 1-11.

13. A communication device, characterized in that, include: Processor and interface circuits; among which, The interface circuit is used to receive code instructions and transmit them to the processor; The processor is used to run the code instructions to perform the method as described in any one of claims 1-11.

14. A communication device, characterized in that, The communication device includes a processor and a transceiver, the transceiver being used for information exchange between the communication device and other communication devices, and the processor executing code instructions to perform the method as described in any one of claims 1-11.

15. A communication device, characterized in that, include: A processor for performing the method as described in any one of claims 1-11.

16. The communication device according to any one of claims 13-15, characterized in that, The communication device further includes a memory for storing code instructions relating to the method as described in any one of claims 1-11.

17. The communication device according to any one of claims 12-16, characterized in that, The communication device is a chip.

18. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a computer program or instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1-11.

19. A computer program product, characterized in that, The computer program product includes: a computer program or instructions that, when run on a computer, cause the computer to perform the method as described in any one of claims 1-11.

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