Communication method, terminal device and base station

Abstract

The method comprises: obtaining configuration information related to random access from a base station, the configuration information comprising a first offset; determining a resource related to random access according to the configuration information and a time domain reference point related to random access, the time domain reference point being a time domain position related to a downlink channel and / or a downlink signal; and transmitting a random access signal based on the resource. In the embodiments of the present disclosure, the resource related to random access is determined in combination with the first offset and the time domain position related to the downlink channel and / or the downlink signal, random access in an asynchronous system can be implemented, and the embodiments of the present disclosure can be applied to terminal devices such as A-IoT and / or P-IoT.

Description

[0001] This application is a divisional application of the invention patent application with application number "202410172317.7", application date of February 6, 2024, and invention title "Communication Method, Terminal Equipment and Base Station". Technical Field

[0002] This disclosure relates to the field of wireless communication technology, and more specifically, to a communication method, terminal device, and base station. Background Technology

[0003] To meet the increased demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or near-5G communication systems. Therefore, 5G or near-5G communication systems are also referred to as "super 4G networks" or "post-LTE systems".

[0004] 5G communication systems are implemented in higher frequency (millimeter wave, mmWave) bands, such as the 60GHz band, to achieve higher data rates. To reduce radio wave propagation loss and increase transmission distance, technologies such as beamforming, massive MIMO, full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive MIMO are discussed in 5G communication systems.

[0005] In addition, in 5G communication systems, development is underway to improve the system network based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communication, cooperative multipoint (CoMP), receiver interference cancellation, and other technologies.

[0006] In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) have been developed as advanced coding modulation (ACM), as well as filter bank multicarrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies.

[0007] In certain special scenarios of wireless communication systems, such as the Internet of Things (IoT) scenario, ambient-powered IoT (A-IoT) devices and passive IoT (P-IoT) devices have been proposed to achieve wireless communication with lower hardware complexity and lower power consumption. However, how to determine the resources used for random access in wireless communication for A-IoT or P-IoT terminal devices remains a problem that needs to be solved. Summary of the Invention

[0008] The purpose of this disclosure is to address the problem of how A-IoT or P-IoT terminal devices determine the resources used for random access.

[0009] According to one aspect of the present disclosure, a method performed by a terminal device in a communication system is provided, the method comprising: Obtain configuration information related to random access from the base station; the configuration information includes a first offset. Based on the configuration information and the time-domain reference points related to random access, determine the resources related to random access. The time-domain reference points are the time-domain locations related to the downlink channel and / or downlink signal. Based on resources, send random access signals.

[0010] In one alternative implementation, the time-domain reference point includes at least one of the following: The time-domain start position of the synchronization signal; The end position of the synchronization signal in the time domain; The time-domain start position of the downlink signal and / or downlink channel carrying configuration information; The time-domain end position of the downlink signal and / or downlink channel carrying configuration information.

[0011] In one alternative implementation, the first offset is a time-domain offset between a time-domain reference point and the time-domain start or end position of the resource associated with random access.

[0012] In one alternative implementation, the configuration information further includes a second offset, wherein, The second offset is the time interval between two adjacent random access-related resources in the time domain; or... The second offset is the time-domain offset between the time-domain starting position of the i-th resource related to random access and the time-domain starting position of the first resource related to random access. The first resource related to random access is the resource related to random access determined based on the first offset and the time-domain reference point, where i is an integer greater than 1.

[0013] In one optional implementation, the configuration information further includes: The number of time-domain resources M related to random access. In an optional implementation, the configuration information further includes a third offset, wherein, The third offset is the time-domain offset between the start position of the cycle related to random access or synchronization and the time-domain start or end position of the resource related to random access; The first offset is the time-domain offset between the time-domain reference point and the start position of the cycle related to random access or synchronization.

[0014] In one alternative implementation, the configuration information further includes a fourth offset, wherein, The fourth offset is the time interval between two temporally adjacent resources related to random access within the same period; or, The fourth offset is the time-domain offset between the time-domain start position of the j-th resource related to random access within the same period and the time-domain start position of the first resource related to random access or the period start position of the current period. The first resource related to random access is determined based on the third offset and the time-domain start position of the current period, where j is an integer greater than 1.

[0015] In one optional implementation, the configuration information further includes: The number of time-domain resources N related to random access within the same period. In one alternative implementation, the resources associated with random access are further determined based on a frequency domain reference point associated with random access, wherein the frequency domain reference point is the frequency domain starting position corresponding to the ARFCN.

[0016] In one alternative implementation, the frequency domain reference point further includes at least one of the following: Absolute frequency; The frequency domain starting position of the uplink active bandwidth portion of the BWP physical resource block PRB0; The frequency domain end position of the 10th PRB of the synchronization signal block SSB; The starting position of the uplink frequency domain of the channel grid operation band; The center frequency domain location of the channel grid operation band; The starting position of the channel grid operation frequency band determined based on the channel grid operation frequency band where the downlink signal and / or downlink channel are located; The frequency domain starting position of the Global Synchronization Channel Number (GSCN); The uplink frequency domain reference point is determined based on the frequency domain start position and frequency domain offset of the downlink signal and / or downlink channel; Uplink frequency domain reference point determined based on the frequency domain end position and frequency domain offset of the downlink signal and / or downlink channel; Frequency domain start position used for uplink carrier transmission.

[0017] In one alternative implementation, the configuration information further includes a fifth offset, wherein the fifth offset is a frequency domain offset between a frequency domain reference point and the frequency domain start or end position of a resource associated with random access.

[0018] In an optional implementation, the configuration information further includes a sixth offset, wherein, The sixth offset is the frequency domain spacing between two adjacent random access-related resources; or, The sixth offset is the frequency domain offset between the frequency domain starting position of the kth resource related to random access and the frequency domain starting position of the first resource related to random access. The first resource related to random access is the resource related to random access determined based on the fifth offset and the frequency domain reference point, where k is an integer greater than 1.

[0019] In one optional implementation, the configuration information further includes: The number of frequency domain resources X associated with random access.

[0020] In one optional implementation, the configuration information further includes at least one of the following: The total number of sequences related to random access; Sequence length related to random access; Sequence indexes related to random access.

[0021] In one alternative implementation, the method further includes: A sequence related to random access is generated based on the International Mobile Subscriber Identity (IMSI) sequence length.

[0022] In one optional implementation, the configuration information further includes: Information about the known terminal device; The information about the known terminal device includes at least one of the following: Terminal device index; Resource indexing; Sequence index.

[0023] In one alternative implementation, the resource index is used to number the first time-domain resource for each frequency-domain resource, and then to number the other time-domain resources in the same manner, wherein the resource index skips the resource corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0024] In one optional implementation, if the terminal device's capabilities include support for frequency division multiplexing, the resources related to random access are mapped according to the ascending order of the frequency domain resource index of frequency division multiplexing, and then mapped according to the ascending order of the time domain resource index; and / or, Terminal equipment does not include capabilities, and resources related to random access are mapped in ascending order of the time-domain resource index.

[0025] According to another aspect of the present disclosure, a method performed by a terminal device in a communication system is provided, the method comprising: The configuration information related to random access is obtained from the base station. The configuration information includes a fifth offset, which is the frequency domain offset between the frequency domain reference point and the frequency domain start or end position of the resource related to random access. The frequency domain reference point is the frequency domain start position corresponding to the ARFCN. Based on the configuration information and frequency domain reference points, determine the resources related to random access; Based on resources, send random access signals.

[0026] In one alternative implementation, the frequency domain reference point further includes at least one of the following: Absolute frequency; The frequency domain starting position of the uplink active bandwidth portion of the BWP physical resource block PRB0; The frequency domain end position of the 10th PRB of the synchronization signal block SSB; The starting position of the uplink frequency domain of the channel grid operation band; The center frequency domain location of the channel grid operation band; The starting position of the channel grid operation frequency band determined based on the channel grid operation frequency band where the downlink signal and / or downlink channel are located; The frequency domain starting position of the Global Synchronization Channel Number (GSCN); The uplink frequency domain reference point is determined based on the frequency domain start position and frequency domain offset of the downlink signal and / or downlink channel; Uplink frequency domain reference point determined based on the frequency domain end position and frequency domain offset of the downlink signal and / or downlink channel; Frequency domain start position used for uplink carrier transmission.

[0027] In one alternative implementation, the fifth offset is a frequency domain offset between the frequency domain reference point and the frequency domain start or end position of the resource associated with random access.

[0028] In an optional implementation, the configuration information further includes a sixth offset, wherein, The sixth offset is the frequency domain spacing between two adjacent random access-related resources; or, The sixth offset is the frequency domain offset between the frequency domain starting position of the kth resource related to random access and the frequency domain starting position of the first resource related to random access. The first resource related to random access is the resource related to random access determined based on the fifth offset and the frequency domain reference point, where k is an integer greater than 1.

[0029] In one optional implementation, the configuration information further includes: The number of frequency domain resources X associated with random access.

[0030] In one optional implementation, the configuration information further includes at least one of the following: The total number of sequences related to random access; Sequence length related to random access; Sequence indexes related to random access.

[0031] In one alternative implementation, the method further includes: A sequence related to random access is generated based on the International Mobile Subscriber Identity (IMSI) sequence length.

[0032] In one optional implementation, the configuration information further includes: Information about the known terminal device; The information about the known terminal device includes at least one of the following: Terminal device index; Resource indexing; Sequence index.

[0033] In one alternative implementation, the resource index is used to number the first time-domain resource for each frequency-domain resource, and then to number the other time-domain resources in the same manner, wherein the resource index skips the resource corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0034] In one optional implementation, if the terminal device's capabilities include support for frequency division multiplexing, the resources related to random access are mapped according to the ascending order of the frequency domain resource index of frequency division multiplexing, and then mapped according to the ascending order of the time domain resource index; and / or, Terminal equipment does not include capabilities, and resources related to random access are mapped in ascending order of the time-domain resource index.

[0035] According to another aspect of the present disclosure, a method performed by a base station in a communication system is provided, the method comprising: Send configuration information related to random access to the terminal device, including a first offset; The receiving terminal device sends a random access signal, wherein the transmission resources of the random access signal are determined based on configuration information and a time-domain reference point related to random access, and the time-domain reference point is the time-domain location related to the downlink channel and / or downlink signal.

[0036] In one alternative implementation, the time-domain reference point includes at least one of the following: The time-domain start position of the synchronization signal; The end position of the synchronization signal in the time domain; The time-domain start position of the downlink signal and / or downlink channel carrying configuration information; The time-domain end position of the downlink signal and / or downlink channel carrying configuration information.

[0037] In one alternative implementation, the first offset is a time-domain offset between a time-domain reference point and the time-domain start or end position of the resource associated with random access.

[0038] In one alternative implementation, the configuration information further includes a second offset, wherein, The second offset is the time interval between two adjacent random access-related resources in the time domain; or... The second offset is the time-domain offset between the time-domain starting position of the i-th resource related to random access and the time-domain starting position of the first resource related to random access. The first resource related to random access is the resource related to random access determined based on the first offset and the time-domain reference point, where i is an integer greater than 1.

[0039] In one optional implementation, the configuration information further includes: The number of time-domain resources M related to random access. In an optional implementation, the configuration information further includes a third offset, wherein, The third offset is the time-domain offset between the start position of the cycle related to random access or synchronization and the time-domain start or end position of the resource related to random access; The first offset is the time-domain offset between the time-domain reference point and the start position of the cycle related to random access or synchronization.

[0040] In one alternative implementation, the configuration information further includes a fourth offset, wherein, The fourth offset is the time interval between two temporally adjacent resources related to random access within the same period; or, The fourth offset is the time-domain offset between the time-domain start position of the j-th resource related to random access within the same period and the time-domain start position of the first resource related to random access or the period start position of the current period. The first resource related to random access is determined based on the third offset and the time-domain start position of the current period, where j is an integer greater than 1.

[0041] In one optional implementation, the configuration information further includes: The number of time-domain resources N related to random access within the same period. In one alternative implementation, the resources associated with random access are further determined based on a frequency domain reference point associated with random access, wherein the frequency domain reference point is the frequency domain starting position corresponding to the ARFCN.

[0042] In one alternative implementation, the frequency domain reference point further includes at least one of the following: Absolute frequency; The frequency domain starting position of the uplink active bandwidth portion of the BWP physical resource block PRB0; The frequency domain end position of the 10th PRB of the synchronization signal block SSB; The starting position of the uplink frequency domain of the channel grid operation band; The center frequency domain location of the channel grid operation band; The starting position of the channel grid operation frequency band determined based on the channel grid operation frequency band where the downlink signal and / or downlink channel are located; The frequency domain starting position of the Global Synchronization Channel Number (GSCN); The uplink frequency domain reference point is determined based on the frequency domain start position and frequency domain offset of the downlink signal and / or downlink channel; Uplink frequency domain reference point determined based on the frequency domain end position and frequency domain offset of the downlink signal and / or downlink channel; Frequency domain start position used for uplink carrier transmission.

[0043] In one alternative implementation, the configuration information further includes a fifth offset, wherein the fifth offset is a frequency domain offset between a frequency domain reference point and the frequency domain start or end position of a resource associated with random access.

[0044] In an optional implementation, the configuration information further includes a sixth offset, wherein, The sixth offset is the frequency domain spacing between two adjacent random access-related resources; or, The sixth offset is the frequency domain offset between the frequency domain starting position of the kth resource related to random access and the frequency domain starting position of the first resource related to random access. The first resource related to random access is the resource related to random access determined based on the fifth offset and the frequency domain reference point, where k is an integer greater than 1.

[0045] In one optional implementation, the configuration information further includes: The number of frequency domain resources X associated with random access.

[0046] In one optional implementation, the configuration information further includes at least one of the following: The total number of sequences related to random access; Sequence length related to random access; Sequence indexes related to random access.

[0047] In one alternative implementation, the sequence length associated with random access is generated by the terminal device based on the International Mobile Subscriber Identity (IMSI).

[0048] In one optional implementation, the configuration information further includes: Information about the known terminal device; The information about the known terminal device includes at least one of the following: Terminal device index; Resource indexing; Sequence index.

[0049] In one alternative implementation, the resource index is used to number the first time-domain resource for each frequency-domain resource, and then to number the other time-domain resources in the same manner, wherein the resource index skips the resource corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0050] In one optional implementation, if the terminal device's capabilities include support for frequency division multiplexing, the resources related to random access are mapped according to the ascending order of the frequency domain resource index of frequency division multiplexing, and then mapped according to the ascending order of the time domain resource index; and / or, Terminal equipment does not include capabilities, and resources related to random access are mapped in ascending order of the time-domain resource index.

[0051] According to another aspect of the present disclosure, a method performed by a base station in a communication system is provided, the method comprising: Send configuration information related to random access to the terminal device. The configuration information includes a fifth offset, wherein the fifth offset is the frequency domain offset between the frequency domain reference point and the frequency domain start or end position of the resource related to random access. The frequency domain reference point is the frequency domain start position corresponding to the ARFCN. The receiving terminal device sends a random access signal, wherein the transmission resources of the random access signal are determined based on configuration information and frequency domain reference points.

[0052] In one alternative implementation, the frequency domain reference point further includes at least one of the following: Absolute frequency; The frequency domain starting position of the uplink active bandwidth portion of the BWP physical resource block PRB0; The frequency domain end position of the 10th PRB of the synchronization signal block SSB; The starting position of the uplink frequency domain of the channel grid operation band; The center frequency domain location of the channel grid operation band; The starting position of the channel grid operation frequency band determined based on the channel grid operation frequency band where the downlink signal and / or downlink channel are located; The frequency domain starting position of the Global Synchronization Channel Number (GSCN); The uplink frequency domain reference point is determined based on the frequency domain start position and frequency domain offset of the downlink signal and / or downlink channel; Uplink frequency domain reference point determined based on the frequency domain end position and frequency domain offset of the downlink signal and / or downlink channel; Frequency domain start position used for uplink carrier transmission.

[0053] In one alternative implementation, the fifth offset is a frequency domain offset between the frequency domain reference point and the frequency domain start or end position of the resource associated with random access.

[0054] In an optional implementation, the configuration information further includes a sixth offset, wherein, The sixth offset is the frequency domain spacing between two adjacent random access-related resources; or, The sixth offset is the frequency domain offset between the frequency domain starting position of the kth resource related to random access and the frequency domain starting position of the first resource related to random access. The first resource related to random access is the resource related to random access determined based on the fifth offset and the frequency domain reference point, where k is an integer greater than 1.

[0055] In one optional implementation, the configuration information further includes: The number of frequency domain resources X associated with random access.

[0056] In one optional implementation, the configuration information further includes at least one of the following: The total number of sequences related to random access; Sequence length related to random access; Sequence indexes related to random access.

[0057] In one alternative implementation, the sequence length associated with random access is generated by the terminal device based on the International Mobile Subscriber Identity (IMSI).

[0058] In one optional implementation, the configuration information further includes: Information about the known terminal device; The information about the known terminal device includes at least one of the following: Terminal device index; Resource indexing; Sequence index.

[0059] In one alternative implementation, the resource index is used to number the first time-domain resource for each frequency-domain resource, and then to number the other time-domain resources in the same manner, wherein the resource index skips the resource corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0060] In one optional implementation, if the terminal device's capabilities include support for frequency division multiplexing, the resources related to random access are mapped according to the ascending order of the frequency domain resource index of frequency division multiplexing, and then mapped according to the ascending order of the time domain resource index; and / or, Terminal equipment does not include capabilities, and resources related to random access are mapped in ascending order of the time-domain resource index.

[0061] According to another aspect of the present disclosure, a terminal device is provided, the terminal device including: a transceiver and a processor, wherein the processor is coupled to the transceiver and configured to perform a method executed by the terminal device in the communication system provided in the present disclosure.

[0062] According to another aspect of the present disclosure, a base station is provided, the base station including: a transceiver and a processor, wherein the processor is coupled to the transceiver and configured to perform a method performed by the base station in the communication system provided in the present disclosure.

[0063] According to another aspect of the present disclosure, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements a method executed by a terminal device in the communication system provided in the present disclosure.

[0064] According to another aspect of the present disclosure, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements a method performed by a base station in the communication system provided in the present disclosure.

[0065] According to another aspect of the present disclosure, a computer program product is provided, including a computer program that, when executed by a processor, implements a method executed by a terminal device in a communication system provided in this disclosure.

[0066] According to another aspect of the present disclosure, a computer program product is provided, including a computer program that, when executed by a processor, implements a method executed by a base station in a communication system provided in this disclosure.

[0067] The communication method, terminal device, and base station provided in this disclosure obtain configuration information related to random access from the base station. The configuration information includes a first offset. Based on the configuration information and a time-domain reference point related to random access, resources related to random access are determined. The time-domain reference point is a time-domain location related to the downlink channel and / or downlink signal. Based on the resources, a random access signal is sent. That is, in this disclosure, the resources related to random access are determined by combining the first offset and the time-domain location related to the downlink channel and / or downlink signal, which can realize random access in an asynchronous system and can be applied to terminal devices such as A-IoT and / or P-IoT. Attached Figure Description

[0068] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below.

[0069] Figure 1 A schematic diagram of the overall structure of the wireless network provided in this embodiment of the disclosure; Figure 2a A schematic diagram of the transmission path provided in an embodiment of this disclosure; Figure 2b A schematic diagram of the receiving path provided in the embodiments of this disclosure; Figure 3a This is a schematic diagram of the structure of a UE provided in an embodiment of this disclosure; Figure 3b This is a schematic diagram of the structure of a base station provided in an embodiment of this disclosure; Figure 4 A schematic diagram illustrating a method executed by a terminal device in a communication system according to an embodiment of this disclosure; Figure 5 This is a schematic diagram illustrating how to determine a random access time-domain resource based on downlink signals and / or downlink channels, as provided in an embodiment of this disclosure. Figure 6 A schematic diagram illustrating how to determine a set of random access time-frequency resources based on downlink signals and / or downlink channels, as provided in an embodiment of this disclosure; Figure 7 A schematic diagram illustrating the determination of a set of periodic random access time-frequency resources based on downlink signals and / or downlink channels, as provided in an embodiment of this disclosure; Figure 8 A schematic diagram illustrating the determination of multiple sets of periodic random access time-frequency resources based on downlink signals and / or downlink channels, as provided in this embodiment of the disclosure; Figure 9 This is a schematic diagram illustrating known terminal device information provided in an embodiment of this disclosure; Figure 10 This is a schematic diagram illustrating another known terminal device information provided in an embodiment of this disclosure; Figure 11 A schematic diagram illustrating a method executed by a terminal device in another communication system provided by an embodiment of this disclosure; Figure 12 A schematic diagram illustrating a method executed by a base station in a communication system according to an embodiment of this disclosure; Figure 13 A schematic diagram illustrating a method performed by a base station in another communication system provided by an embodiment of this disclosure; Figure 14 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this disclosure. Detailed Implementation

[0070] The following description, with reference to the accompanying drawings, is provided to aid in a thorough understanding of the various embodiments of this disclosure as defined by the claims and their equivalents. This description includes various specific details to aid understanding but should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of this disclosure. Furthermore, for clarity and brevity, descriptions of well-known functions and structures may be omitted.

[0071] The terms and wording used in the following description and claims are not limited to their dictionary meanings, but are merely used by the inventors to enable a clear and consistent understanding of this disclosure. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this disclosure is for illustrative purposes only and not for limiting the purpose of this disclosure as defined in the appended claims and their equivalents.

[0072] It should be understood that the singular forms of “one,” “an,” and “the” include plural references unless the context clearly indicates otherwise. Thus, for example, the reference to “component surface” includes one or more such surfaces.

[0073] The terms “comprising” or “may include” refer to the presence of a corresponding disclosed function, operation, or component that may be used in the various embodiments of this disclosure, rather than limiting the presence of one or more additional functions, operations, or features. Furthermore, the terms “comprising” or “having” may be interpreted as indicating certain characteristics, numbers, steps, operations, constituent elements, components, or combinations thereof, but should not be construed as excluding the possibility of the presence of one or more other characteristics, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0074] The term "or" as used in the various embodiments of this disclosure includes any of the listed terms and all combinations thereof. For example, "A or B" may include A, may include B, or may include both A and B.

[0075] Unless otherwise defined, all terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by those skilled in the art. Common terms as defined in dictionaries are to be interpreted as having a meaning consistent with their context in the relevant technical field and should not be interpreted ideally or overly formally, unless expressly defined in this disclosure.

[0076] Figure 1 An example wireless network 100 according to various embodiments of the present disclosure is shown. Figure 1 The embodiment of the wireless network 100 shown is for illustrative purposes only. Other embodiments of the wireless network 100 can be used without departing from the scope of this disclosure.

[0077] Wireless network 100 includes gNodeB (gNB) 101, gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one Internet Protocol (IP) network 130, such as the Internet, a proprietary IP network, or other data network.

[0078] Depending on the network type, other well-known terms such as "base station" or "access point" can be used instead of "gNodeB" or "gNB". For convenience, the terms "gNodeB" and "gNB" are used in this patent document to refer to network infrastructure components that provide wireless access to remote terminals. Furthermore, depending on the network type, other well-known terms such as "mobile station", "user station", "remote terminal", "wireless terminal", or "user device" can be used instead of "user equipment" or "UE". For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to remote wireless devices that wirelessly access the gNB, whether the UE is a mobile device (such as a mobile phone or smartphone) or a fixed device as commonly understood (such as a desktop computer or vending machine).

[0079] gNB 102 provides wireless broadband access to network 130 to multiple first user equipments (UEs) within its coverage area 120. The multiple first UEs include: UE 111, which may be located in a small business (SB); UE 112, which may be located in an enterprise (E); UE 113, which may be located in a WiFi hotspot (HS); UE 114, which may be located in a first residence (R); UE 115, which may be located in a second residence (R); and UE 116, which may be a mobile device (M), such as a cellular phone, wireless laptop computer, wireless PDA, etc. gNB 103 provides wireless broadband access to network 130 to multiple second UEs within its coverage area 125. The multiple second UEs include UE 115 and UE 116. In some embodiments, one or more of gNBs 101-103 are capable of communicating with each other and with UEs 111-116 using 5G, LTE, LTE-A, WiMAX, or other advanced wireless communication technologies.

[0080] The dashed lines indicate the approximate extent of coverage areas 120 and 125, which are shown as approximately circular for illustrative and explanatory purposes only. It should be clearly understood that coverage areas associated with the gNB, such as coverage areas 120 and 125, can have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the radio environment associated with natural and man-made obstacles.

[0081] As described in more detail below, one or more of gNB 101, gNB 102, and gNB 103 include a 2D antenna array as described in embodiments of this disclosure. In some embodiments, one or more of gNB 101, gNB 102, and gNB 103 support codebook design and architecture for systems having 2D antenna arrays.

[0082] although Figure 1 An example of a wireless network 100 is shown, but it is possible to... Figure 1 Various modifications can be made. For example, wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement. Furthermore, gNB 101 can communicate directly with any number of UEs and provide those UEs with wireless broadband access to network 130. Similarly, each gNB 102-103 can communicate directly with network 130 and provide UEs with direct wireless broadband access to network 130. In addition, gNBs 101, 102, and / or 103 can provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0083] Figure 2a and Figure 2bExample wireless transmit and receive paths according to this disclosure are shown. In the following description, transmit path 200 can be described as being implemented in a gNB (such as gNB 102), while receive path 250 can be described as being implemented in a UE (such as UE 116). However, it should be understood that receive path 250 can be implemented in a gNB, and transmit path 200 can be implemented in a UE. In some embodiments, receive path 250 is configured to support codebook design and structure for a system having a 2D antenna array as described in embodiments of this disclosure.

[0084] The transmit path 200 includes a channel coding and modulation block 205, a serial-to-parallel (S-to-P) block 210, an N-point inverse fast Fourier transform (IFFT) block 215, a parallel-to-serial (P-to-S) block 220, a cyclic prefix addition block 225, and an up-converter (UC) 230. The receive path 250 includes a down-converter (DC) 255, a cyclic prefix removal block 260, a serial-to-parallel (S-to-P) block 265, an N-point fast Fourier transform (FFT) block 270, a parallel-to-serial (P-to-S) block 275, and a channel decoding and demodulation block 280.

[0085] In transmit path 200, channel coding and modulation block 205 receives a set of information bits, applies coding (such as low-density parity-check (LDPC) coding), and modulates the input bits (such as using quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) to generate a sequence of frequency-domain modulated symbols. Serial-to-parallel (S-to-P) block 210 converts (e.g., demultiplexes) the serial modulated symbols into parallel data to generate N parallel symbol streams, where N is the number of IFFT / FFT points used in gNB 102 and UE 116. N-point IFFT block 215 performs IFFT operations on the N parallel symbol streams to generate a time-domain output signal. Parallel-to-serial block 220 converts (e.g., multiplexes) the parallel time-domain output symbols from N-point IFFT block 215 to generate a serial time-domain signal. Cyclic prefix addition block 225 inserts a cyclic prefix into the time-domain signal. Upconverter 230 modulates (e.g., upconverts) the output of the added cyclic prefix block 225 to an RF frequency for transmission via a wireless channel. The signal can also be filtered at the baseband before being converted to the RF frequency.

[0086] The RF signal transmitted from gNB 102 reaches UE 116 after passing through the wireless channel, and UE 116 performs the opposite operation to that at gNB 102. Downconverter 255 downconverts the received signal to the baseband frequency, and cyclic prefix removal block 260 removes the cyclic prefix to generate a serial time-domain baseband signal. Serial-to-parallel block 265 converts the time-domain baseband signal into a parallel time-domain signal. N-point FFT block 270 performs an FFT algorithm to generate N parallel frequency-domain signals. Parallel-to-serial block 275 converts the parallel frequency-domain signals into a sequence of modulated data symbols. Channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0087] Each of gNBs 101-103 can implement a transmission path 200 similar to that used for transmission to UEs 111-116 in the downlink, and a reception path 250 similar to that used for reception from UEs 111-116 in the uplink. Similarly, each of UEs 111-116 can implement a transmission path 200 for transmission to gNBs 101-103 in the uplink, and a reception path 250 for reception from gNBs 101-103 in the downlink.

[0088] Figure 2a and Figure 2b Each of the components can be implemented using only hardware, or using a combination of hardware and software / firmware. As a specific example, Figure 2a and Figure 2b At least some of the components can be implemented in software, while others can be implemented in configurable hardware or a combination of software and configurable hardware. For example, FFT block 270 and IFFT block 215 can be implemented as configurable software algorithms, wherein the value of the number of points N can be modified according to the implementation method.

[0089] Furthermore, although the description uses FFT and IFFT, this is merely illustrative and should not be construed as limiting the scope of this disclosure. Other types of transforms, such as the Discrete Fourier Transform (DFT) and Inverse Discrete Fourier Transform (IDFT) functions, can be used. It should be understood that for DFT and IDFT functions, the value of variable N can be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of variable N can be any integer that is a power of 2 (such as 1, 2, 4, 8, 16, etc.).

[0090] although Figure 2a and Figure 2b An example of a wireless transmit and receive path is shown, but it is possible to modify it further. Figure 2a and Figure 2b Make various changes. For example, Figure 2a and Figure 2b The various components can be combined, further subdivided, or omitted, and additional components can be added as needed. Furthermore, Figure 2a and Figure 2b This is intended to illustrate examples of the types of send and receive paths that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0091] Figure 3a Example UE 116 according to this disclosure is shown. Figure 3a The embodiment of UE 116 shown is for illustrative purposes only, and Figure 1 UEs 111-115 can have the same or similar configurations. However, UEs have a wide variety of configurations, and Figure 3a This disclosure is not intended to limit the scope of any particular implementation of the UE.

[0092] UE 116 includes an antenna 305, a radio frequency (RF) transceiver 310, a transmit (TX) processing circuitry 315, a microphone 320, and a receive (RX) processing circuitry 325. UE 116 also includes a speaker 330, a processor / controller 340, an input / output (I / O) interface (IF) 345, multiple input devices 350, a display 355, and memory 360. Memory 360 includes an operating system (OS) 361 and one or more applications 362.

[0093] RF transceiver 310 receives incoming RF signals transmitted by a gNB of wireless network 100 from antenna 305. RF transceiver 310 down-converts the incoming RF signals to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is sent to RX processing circuitry 325, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. RX processing circuitry 325 sends the processed baseband signal to speaker 330 (e.g., for voice data) or to processor / controller 340 (e.g., for web browsing data) for further processing.

[0094] TX processing circuitry 315 receives analog or digital voice data from microphone 320, or other outgoing baseband data (such as network data, email, or interactive video game data) from processor / controller 340. TX processing circuitry 315 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate processed baseband or IF signals. RF transceiver 310 receives the processed baseband or IF signals from TX processing circuitry 315 and up-converts the baseband or IF signals into RF signals transmitted via antenna 305.

[0095] The processor / controller 340 may include one or more processors or other processing devices and execute an OS 361 stored in memory 360 to control the overall operation of the UE 116. For example, the processor / controller 340 may control the reception of forward channel signals and the transmission of reverse channel signals via RF transceiver 310, RX processing circuitry 325, and TX processing circuitry 315 according to known principles. In some embodiments, the processor / controller 340 includes at least one microprocessor or microcontroller.

[0096] The processor / controller 340 is also capable of executing other processes and programs residing in the memory 360, such as operations for channel quality measurement and reporting for a system having a 2D antenna array as described in the embodiments of this disclosure. The processor / controller 340 is capable of moving data into or out of the memory 360 as needed for the execution of the process. In some embodiments, the processor / controller 340 is configured to execute an application 362 based on an OS 361 or in response to signals received from a gNB or operator. The processor / controller 340 is also coupled to an I / O interface 345, which provides the UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. The I / O interface 345 is a communication path between these accessories and the processor / controller 340.

[0097] The processor / controller 340 is also coupled to input devices(s) 350 and a display 355. An operator of the UE 116 can use the input devices(s) 350 to input data into the UE 116. The display 355 may be a liquid crystal display (LCD) or other display capable of displaying text and / or at least limited graphics (such as from a website). Memory 360 is coupled to the processor / controller 340. A portion of the memory 360 may include random access memory (RAM), while another portion of the memory 360 may include flash memory or other read-only memory (ROM).

[0098] although Figure 3a An example of UE 116 is shown, but it is possible to... Figure 3a Make various changes. For example, Figure 3a The various components can be combined, further subdivided, or omitted, and additional components can be added as needed. As a specific example, the processor / controller 340 can be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Furthermore, although... Figure 3a The UE116 is shown configured as a mobile phone or smartphone, but the UE can be configured to operate as other types of mobile or fixed devices.

[0099] Figure 3bAn example gNB 102 according to this disclosure is shown. Figure 3b The embodiment of gNB 102 shown is for illustrative purposes only, and Figure 1 Other gNBs can have the same or similar configurations. However, gNBs have a wide variety of configurations, and Figure 3b The scope of this disclosure is not limited to any particular implementation of the gNB. It should be noted that gNB 101 and gNB 103 can include the same or similar structures as gNB 102.

[0100] like Figure 3b As shown, gNB 102 includes multiple antennas 370a-370n, multiple RF transceivers 372a-372n, transmit (TX) processing circuitry 374, and receive (RX) processing circuitry 376. In some embodiments, one or more of the multiple antennas 370a-370n include a 2D antenna array. gNB 102 also includes a controller / processor 378, a memory 380, and a backhaul or network interface 382.

[0101] RF transceivers 372a-372n receive incoming RF signals, such as signals transmitted by the UE or other gNBs, from antennas 370a-370n. RF transceivers 372a-372n down-convert the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are sent to RX processing circuitry 376, which generates processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. RX processing circuitry 376 sends the processed baseband signals to controller / processor 378 for further processing.

[0102] The TX processing circuit 374 receives analog or digital data (such as voice data, network data, email, or interactive video game data) from the controller / processor 378. The TX processing circuit 374 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 372a-372n receive the outgoing processed baseband or IF signal from the TX processing circuit 374 and up-convert the baseband or IF signal into an RF signal transmitted via antennas 370a-370n.

[0103] The controller / processor 378 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 378 may control the reception of forward channel signals and the transmission of backward channel signals via RF transceivers 372a-372n, RX processing circuitry 376, and TX processing circuitry 374, according to known principles. The controller / processor 378 may also support additional functions, such as more advanced wireless communication functions. For example, the controller / processor 378 may perform a BIS process, such as by a blind interference sensing (BIS) algorithm, and decode the received signal after subtracting interference. The controller / processor 378 may support any of a wide variety of other functions in the gNB 102. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0104] The controller / processor 378 is also capable of executing programs and other processes, such as a basic operating system, residing in the memory 380. The controller / processor 378 is also capable of supporting channel quality measurement and reporting for systems having 2D antenna arrays as described in embodiments of this disclosure. In some embodiments, the controller / processor 378 supports communication between entities such as web RTCs. The controller / processor 378 is capable of moving data into or out of the memory 380 as needed for the execution of processes.

[0105] The controller / processor 378 is also coupled to a backhaul or network interface 382. The backhaul or network interface 382 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or over a network. The backhaul or network interface 382 is capable of supporting communication via any suitable wired or wireless connection(s). For example, when the gNB 102 is implemented as part of a cellular communication system (such as a cellular communication system supporting 5G or new radio access technologies or NR, LTE, or LTE-A), the backhaul or network interface 382 allows the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the backhaul or network interface 382 allows the gNB 102 to communicate with a larger network (such as the Internet) via a wired or wireless local area network or via a wired or wireless connection. The backhaul or network interface 382 includes any suitable architecture supporting communication via a wired or wireless connection, such as an Ethernet or RF transceiver.

[0106] Memory 380 is coupled to controller / processor 378. A portion of memory 380 may include RAM, while another portion may include flash memory or other ROM. In some embodiments, multiple instructions, such as a BIS algorithm, are stored in memory. The multiple instructions are configured to cause controller / processor 378 to perform the BIS process and decode the received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0107] As described in more detail below, the transmit and receive paths of the gNB 102 (implemented using RF transceivers 372a-372n, TX processing circuitry 374, and / or RX processing circuitry 376) support aggregated communication with FDD and TDD cells.

[0108] although Figure 3b An example of gNB 102 is shown, but it is possible to compare it with other models. Figure 3b Various modifications can be made. For example, gNB102 can include any number of... Figure 3a Each component shown is illustrated. As a specific example, the access point can include a plurality of backhaul or network interfaces 382, ​​and the controller / processor 378 can support routing functions to route data between different network addresses. As another specific example, although shown as a single instance including TX processing circuitry 374 and a single instance including RX processing circuitry 376, the gNB 102 can include multiple instances of each (e.g., one for each RF transceiver). To make the objectives, technical solutions, and advantages of this disclosure clearer, embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0109] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0110] This disclosure provides a communication method, terminal device, and base station. Specifically, it can be a method and device for random access resource configuration, including but not limited to a method for determining time-domain resources related to random access, a method for determining frequency-domain resources related to random access, and a method for determining the generation sequence of random access.

[0111] The technical solutions of this disclosure can be applied to various communication systems, such as: Global System for Mobile Communications (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), 5th Generation (5G), or New Radio (NR), etc. Furthermore, the technical solutions of this disclosure can be applied to future-oriented communication technologies.

[0112] The following description of several exemplary embodiments illustrates the technical solutions of this disclosure and the technical effects produced by these solutions. It should be noted that the following embodiments can be referenced, learned from, or combined with each other. Identical terms, similar features, and similar implementation steps in different embodiments will not be repeated.

[0113] This disclosure provides a method executed by a terminal device in a communication system, such as... Figure 4 As shown, the method includes: Step S101: Obtain configuration information related to random access from the base station, including a first offset; Step S102: Based on the configuration information and the time-domain reference point related to random access, determine the resources related to random access. The time-domain reference point is the time-domain location related to the downlink channel and / or downlink signal. Step S103: Based on resources, send a random access signal.

[0114] In this embodiment of the disclosure, configuration information, time-domain reference points, resources, etc. related to random access can also be understood as configuration information, time-domain reference points, resources, etc. used for random access. For ease of description, "related to random access" may also be referred to as "used for random access", that is, the two can be used interchangeably.

[0115] The transmission links of a wireless communication system mainly include: downlink communication links from gNB (base station) to User Equipment (UE) in 5G, 6G, or future wireless communication scenarios; uplink communication links from UE to the network; and sidelink communication links (SL) from UE to UE, also known as bypass communication links. A-IoT or P-IoT terminal devices (also known as A-IoT or P-IoT tags) can establish uplink communication links by actively transmitting data or by reflecting an uplink carrier. In this case, determining the time-domain resources used for random access is a problem that needs to be solved.

[0116] In this embodiment of the disclosure, downlink signals and / or channels are used as signals to trigger the terminal device to perform a random access procedure. That is, the time-domain position related to the downlink channel and / or downlink signal is used as a time-domain reference point, and the time-domain resources for random access are determined in combination with a first offset, thereby enabling random access in an asynchronous system.

[0117] Optionally, the method executed by the terminal device in the communication system provided in this disclosure can be applied to special scenarios, such as A-IoT and / or P-IoT terminal devices in the Internet of Things (IoT) scenario. A-IoT and / or P-IoT devices can further reduce energy loss on the terminal side and reduce deployment costs. Specifically, A-IoT or P-IoT terminal devices can receive RF signals (Radio Frequency Signals) and / or collect energy from sources such as solar energy, vibration, heat, and wind energy, converting the received energy into AC or DC voltage. For example, an RF-DC (Direct Current) converter can convert the RF signal into a DC signal, and then this electrical energy can be transmitted to an energy storage device such as a rechargeable battery or capacitor to establish a wireless communication link.

[0118] It is understood that the use of downlink channels and / or downlink signals as signals to trigger terminal devices to perform random access procedures in scenarios such as A-IoT and / or P-IoT is a non-limiting example. This disclosure describes an exemplary method using this example, and the described method can also be used for receiving other signals and / or channels in IoT scenarios or other scenarios.

[0119] In this embodiment of the disclosure, the terminal device obtains configuration information related to random access by receiving downlink signals and / or downlink channels. The downlink signals and / or downlink channels can indicate the configuration information related to random access through bit information. The configuration method of the downlink signals and / or downlink channels may include one or more of the following combinations: (1) The downlink signal and / or downlink channel can be a signal or channel that is periodically broadcast within the cell to trigger the terminal device to perform a random access procedure and inventory all terminal devices that can be inventoried within the cell coverage area. Alternatively, the downlink signal and / or downlink channel can be a signal or channel that is periodically multicast within the cell to schedule one or a group of terminal devices within the cell. The downlink signal and / or downlink channel can be configured through RRC (Radio Resource Control) messages. The terminal device obtains configuration information related to random access by receiving the periodically transmitted downlink signal and / or downlink channel. Optionally, when the period of the downlink signal and / or downlink channel is not configured, the UE can default the period of the downlink signal and / or downlink channel to a predefined value, such as 20ms. (2) The downlink signals and / or downlink channels can be semi-statically configured. The terminal device activates and / or deactivates the resources of the downlink signals and / or downlink channels used to trigger the terminal device to perform a random access procedure by receiving RRC messages and / or MAC (Medium Access Control) CE (Control Element) messages. The terminal device receives downlink signals and / or downlink channels on the activated resources and obtains configuration information related to random access. (3) The downlink signals and / or downlink channels can be dynamically configured, and the resources of the downlink signals and / or downlink channels used to trigger the terminal equipment to perform a random access procedure can be dynamically indicated by the DCI (Downlink Control Information). Optionally, the terminal equipment determines the resources of the downlink signals and / or downlink channels by receiving a newly defined DCI format. The information carried by the newly defined DCI format includes at least one of the following: TDRA (Time domain resource assignment) for determining the time domain resource location of the downlink signals and / or downlink channels, and FDRA (Frequency domain resource assignment) for determining the frequency domain resource location of the downlink signals and / or downlink channels.

[0120] In this embodiment of the disclosure, the aforementioned time-domain reference point may include, but is not limited to, at least one of the following: (1) The time-domain start position of the synchronization signal; (2) The time domain end position of the synchronization signal; The time-domain start position can also be called the time-domain origin position or simply the time-domain start point, and the time-domain end position can also be called the time-domain end position or simply the time-domain end point. Optionally, the time-domain start position or time-domain end position of the synchronization signal closest to the downlink signal and / or downlink channel is used as the time-domain reference point, and the time-domain start position of the random access resource is the time-domain reference point plus a predefined or pre-configured time interval (first offset). Optionally, this time interval can be determined based on the downlink signal and / or downlink channel; (3) The time-domain start position of the downlink signal and / or downlink channel carrying configuration information; (4) The time domain end position of the downlink signal and / or downlink channel carrying configuration information.

[0121] Optionally, the starting position in the time domain of the random access resource can be determined from the start or end position in the time domain of the downlink signal and / or downlink channel, after a predefined or preconfigured time interval (first offset). Optionally, this time interval can be determined based on the downlink signal and / or downlink channel. (5) A predetermined time unit, such as SFN0slot0 (RFN0 slot0). Considering that SFN0slot0 is an absolute time-domain start position, the terminal device and the NR UE provided in this embodiment can share the same time-domain start position. The terminal device determines the index of the SFN where the downlink signal and / or downlink channel is located by receiving the downlink signal and / or downlink channel. Optionally, the terminal device can determine the time-domain start position of the random access resource by the indicated SFN index and a predefined or pre-configured time interval (first offset). Optionally, this time interval can be determined based on the downlink signal and / or downlink channel.

[0122] In this embodiment of the disclosure, the configuration information related to random access may include, but is not limited to, one or more of the following combinations: (1) Time-domain resource period related to random access. The time-domain start position of the period can be calculated from the SFN where the downlink signal and / or downlink channel is located, or the time-domain start position of the period can be calculated from the time-domain start position or time-domain end position of the downlink signal and / or downlink channel plus a predefined or pre-configured time-domain offset (first offset). Wherein, the predefined or pre-configured time-domain offset is a real number greater than or equal to 0. This configuration is more suitable for configuring a set of periodic time-domain resources, which is convenient for aligning the time granularity with other signals or channels. The multiple access opportunities configured can enable the UE to transmit the sequence for random access on the periodic time-domain resources for random access using different transmit powers within the limit of the maximum number of transmissions of the sequence for random access. (2) The time-domain start position or time-domain end position of the first time-domain resource used for random access within a period of time-domain resources used for random access. Optionally, the time-domain start position or time-domain end position of the first time-domain resource used for random access may be pre-configured, or determined by the time-domain start position of the time-domain resource period used for random access and a predefined or pre-configured time-domain offset (third offset), wherein the predefined or pre-configured time-domain offset is a real number greater than or equal to 0; (3) The number of time-domain resources related to random access within the same period, N, that is, the number of time-domain resources used for random access within a period of time-domain resources used for random access, where N is a real number greater than 1.

[0123] (4) The time-domain offset relative to the time-domain start or end position of the first time-domain resource used for random access, or the time interval between two adjacent time-domain resources used for random access, within a period of a time-domain resource used for random access. The time interval between two adjacent time-domain resources used for random access within a period is the time interval from the time-domain end position of the previous time-domain resource used for random access to the time-domain start position of the next time-domain resource used for random access. This configuration parameter is used to indicate the time-domain start positions of the N-1 time-domain resources used for random access within a period of a time-domain resource used for random access. Optionally, the time interval between two adjacent time-domain resources used for random access within a period can be a predefined or preconfigured real number, or it can be N-1 predefined values.

[0124] (5) Duration of time-domain resources used for random access. This indicates the duration of a time-domain resource, starting from the time-domain start position of the time-domain resource used for random access.

[0125] (6) The number of time-domain resources M related to random access. That is, the number of time-domain resources M used for random access starting from the receipt of downlink signals and / or downlink channels, where M is a real number greater than 1.

[0126] (7) The time-domain start position or time-domain end position of the first time-domain resource used for random access, starting from the receipt of the downlink signal and / or downlink channel. The time-domain start position or time-domain end position of the first time-domain resource used for random access can be determined by the time-domain reference point of the random access resource and a predefined or pre-configured time-domain offset (first offset), wherein the predefined or pre-configured time-domain offset is a real number greater than or equal to 0.

[0127] (8) The M-1 time intervals from the time-domain reference point of the random access resource or the time-domain start or end position of the first time-domain resource used for random access to the time-domain start positions of the M-1 time-domain resources used for random access, and / or the time intervals between two adjacent time-domain resources used for random access; this configuration parameter is used to indicate the M time-domain resources used for random access. Optionally, the time interval between two adjacent time-domain resources used for random access is the time interval from the time-domain end position of the previous time-domain resource used for random access to the time-domain start position of the next time-domain resource used for random access, which can be a predefined or pre-configured time-domain offset (second offset), or it can be M-1 predefined or pre-configured time-domain offsets. This configuration is suitable for configuring a set of aperiodic time-domain resources. The time-domain offset is to reduce the impact of time-domain synchronization errors.

[0128] (9) Sequence format for random access, including the length of the guard interval for reducing uplink synchronization error and / or the sequence length for random access and / or the length of the guard interval for reducing collisions caused by synchronization errors between terminal devices.

[0129] (10) Maximum number of transmissions of the sequence used for random access. Considering that the terminal device is unaware of the transmission power of the sequence when sending the random access sequence, the terminal device will determine the transmission power of a sequence and send the sequence for random access on the resource used for random access using the transmission power. If no random access response is received after a predefined or preconfigured period of time, the terminal device will increase the transmission power and send a reselected sequence for random access on the resource used for random access. The purpose of setting the maximum number of transmissions is to limit the number of times the terminal device resends the random access sequence. This configuration method is more suitable for configuring periodic resources for random access.

[0130] In one alternative implementation, the first offset is a time-domain offset between a time-domain reference point and the time-domain start or end position of the resource associated with random access. As an example, the terminal device can determine the time-domain start position of a time-domain resource for random access using the time-domain reference point of the random access resource and a first offset (such as time interval T2) determined based on downlink signals and / or downlink channels, or the time-domain start position of the time-domain resource for random access is no earlier than the time-domain reference point of the random access resource plus a predefined or pre-configured time interval, and determine the duration of the time-domain resource for random access by receiving downlink signals and / or downlink channels, such as... Figure 5 As shown. Time interval T2 is the time interval from the time-domain reference point of the random access resource to the starting position of the time-domain resource used for random access in the time domain. Wherein, Figure 5 For more information on the frequency domain, please refer to the introduction below.

[0131] Optionally, the configuration information also includes a second offset, wherein the second offset is the time-domain offset between the time-domain start position of the i-th random access-related resource and the time-domain start position of the first random access-related resource, wherein the first random access-related resource is the random access-related resource determined based on the first offset and a time-domain reference point, and i is an integer greater than 1. That is, the terminal device can determine the time-domain start position of the first time-domain resource for random access by using the time-domain reference point of the random access resource and the first offset (such as time interval T2) determined based on the downlink signal and / or downlink channel. Alternatively, the time-domain start position of the first time-domain resource for random access is no earlier than the time-domain reference point of the random access resource plus a predefined or pre-configured time interval. Based on a set of time intervals {L1,…,L...} between the time-domain reference point of the random access resource or the time-domain start position of the first time-domain resource for random access and a set of time-domain start positions where the time-domain resource for random access is located. M-1} (i.e., the second offset), determines the time-domain start position of a set of time-domain resources used for random access, or the time-domain start position of the subsequent M-1 time-domain resources is no earlier than the time-domain reference point of the random access resource or the time-domain start position of the first time-domain resource used for random access plus a set of M-1 predefined or pre-configured time intervals. The duration of the time-domain resources used for random access is determined by receiving downlink signals and / or downlink channels, such as Figure 6 As shown. Where, L1,…,L M-1 For predefined or preconfigured values, and L1,…,L M-1 It is a real number greater than or equal to 0.

[0132] Alternatively, the second offset is the time interval between two adjacent random access-related resources in the time domain. The first random access-related resource is the random access-related resource determined based on the first offset and a time domain reference point. That is, the terminal device can determine the time domain start position of the first time domain resource used for random access using the time domain reference point of the random access resource and the first offset (e.g., time interval T2) determined based on the downlink signal and / or downlink channel. Alternatively, the time domain start position of the first time domain resource used for random access is no earlier than the time domain reference point of the random access resource plus a predefined or pre-configured time interval. The time domain start positions of the subsequent M-1 time domain resources are determined based on the time domain start or end position of the first time domain resource used for random access, and / or the time interval G1 (i.e., the second offset) between two adjacent time domain resources used for random access configured based on the downlink signal and / or downlink channel, and the number M of time domain resources used for random access starting from the receipt of the downlink signal and / or downlink channel. Figure 6 As shown. Here, G1 is a predefined or preconfigured value, and G1 is a real number greater than or equal to 0. When the sequence format used for random access is configured, G1=0. Figure 6 For details regarding the frequency domain, please refer to the introduction below. Alternatively, the start position of the subsequent M-1 time-domain resources shall not be earlier than the start or end position of the previous time-domain resource used for random access plus a predefined or pre-configured time interval.

[0133] In another optional implementation, the first offset is a time-domain offset between a time-domain reference point and the start position of a period associated with random access or synchronization. The configuration information also includes a third offset, wherein the third offset is a time-domain offset between the start position of a period associated with random access or synchronization and the time-domain start or end position of a resource associated with random access. That is, the terminal can determine a set of periodic time-domain resources for random access based on the time-domain reference point of the random access resources and the time-domain resource period for random access indicated by downlink signals and / or downlink channels. Within a time-domain resource period for random access, the terminal device determines the time-domain start position of a time-domain resource for random access based on the time-domain start position of the time-domain resource period for random access and a predefined or pre-configured time-domain offset T1 (the third offset), or the time-domain start position of a time-domain resource for random access is no earlier than the time-domain start position of the time-domain resource period for random access plus a predefined or pre-configured time interval. The duration of the time-domain resources for random access is determined by receiving downlink signals and / or downlink channels, such as... Figure 7 As shown. Time interval T1 is the time interval from the start position of the time domain resource period used for random access to the start position of the time domain resource where the random access is located. Figure 7 For more information on the frequency domain, please refer to the introduction below.

[0134] Optionally, the configuration information also includes a fourth offset, wherein the fourth offset is the time-domain offset between the time-domain start position of the j-th resource related to random access within the same period and the time-domain start position of the first resource related to random access or the start position of the period; wherein the first resource related to random access is the resource related to random access determined based on the third offset and the time-domain start position of the period, and j is an integer greater than 1. That is, the terminal device can determine a set of periodic time-domain resources for random access based on the time-domain reference point of the random access resources and the time-domain resource period for random access based on the downlink signal and / or downlink channel indication, wherein, within a time-domain resource period for random access, the terminal device determines a set of periodic time-domain resources for random access based on the time-domain start position of the time-domain resource period for random access and a set of N predefined or pre-configured time-domain offsets {T1,T1+L1,…,T1+L...}. N-1 The fourth offset determines the starting position in the time domain for a set of N time-domain resources used for random access, with the time-domain offsets being {T1, T1+L1, ..., T1+L...}. N-1 The time interval is defined as the time-domain start position of the time-domain resource period used for random access to the time-domain start position of the time-domain resource itself. Alternatively, it can be defined as the time-domain start positions of a set of N time-domain resources used for random access not earlier than the time-domain start position of the time-domain resource period used for random access, plus a set of N predefined or pre-configured time intervals. This time interval and / or time-domain offset can be used for receiving synchronization signals. The duration of the time-domain resource used for random access is determined by receiving downlink signals and / or the downlink channel, such as... Figure 8 As shown. The time-domain offset T1 is the time interval from the time-domain start position of the time-domain resource period used for random access to the time-domain start position of the first time-domain resource used for random access.

[0135] Alternatively, the fourth offset is the time interval between two adjacent random access-related resources in the time domain within the same period; where the first random access-related resource is the random access-related resource determined based on the third offset and the time domain start position of the current period, and j is an integer greater than 1. That is, the terminal device can determine a set of periodic time domain resources for random access by using the time domain reference point of the random access resources and the time domain resource period for random access indicated by the downlink signal and / or downlink channel. Within a time domain resource period for random access, the terminal device determines the time domain start position of the first random access-related time domain resource based on the time domain start position of the time domain resource period for random access and the time domain offset T1 (the third offset), or the time domain start position of the first random access-related time domain resource is no earlier than the time domain start position of the time domain resource period for random access plus a predefined or pre-configured time interval. The terminal device can determine the time-domain start position of a set of N-1 time-domain resources for random access based on the time-domain start or end position of the first time-domain resource used for random access and a set of N-1 predefined or pre-configured time-domain offsets (fourth offsets). Alternatively, the terminal device can determine the time-domain start position of a set of N-1 time-domain resources for random access based on the start or end position of the first time-domain resource used for random access and a predefined or pre-configured time interval G1 (fourth offset). Or, the time-domain start position of a set of N-1 time-domain resources for random access must not be earlier than the time-domain start or end position of the first time-domain resource used for random access plus a set of N-1 predefined or pre-configured time intervals. Or, the time-domain start position of the subsequent N-1 time-domain resources used for random access must not be earlier than the time-domain start or end position of the previous time-domain resource used for random access plus a predefined or pre-configured time interval. The duration of the time-domain resources used for random access is determined by receiving downlink signals and / or downlink channels. Figure 8 As shown. Among them, Figure 8 For more information on the frequency domain, please refer to the introduction below.

[0136] In the embodiments of this disclosure, the time-domain offset and / or time interval and / or duration can be determined by multiples of absolute time units, such as multiples of 1 millisecond or 1 second, or by the number of relative time units (also called time-domain units). A time unit (also called a time-domain unit) can be: an OFDM (Orthogonal Frequency Division Multiplexing) symbol, an OFDM symbol group (composed of multiple OFDM symbols), a time slot, a time slot group (composed of multiple time slots), a subframe, a subframe group (composed of multiple subframes), a system frame, a system frame group (composed of multiple system frames), the duration occupied by symbol 0, the duration occupied by symbol 1, and the duration occupied by symbols 0 and 1. A time unit can also be a combination of multiple granularities, such as N1 time slots plus N2 OFDM symbols.

[0137] Furthermore, embodiments of this disclosure provide a method for determining frequency domain resources for random access.

[0138] In this embodiment of the disclosure, if the terminal device reports UE capability that supports frequency division multiplexing, the terminal device can be configured with X frequency domain resources in the same time unit for transmitting signals and / or channels related to random access.

[0139] In this embodiment of the disclosure, the configuration information related to random access may include configuration information of frequency domain resources for random access. Specifically, the configuration information of frequency domain resources for random access may include, but is not limited to, a combination of one or more of the following: (1) Bandwidth of frequency domain resources used for random access, used to represent the bandwidth of frequency domain resources used by the terminal device for uplink transmission in the frequency domain; (2) The subband bandwidth occupied by the frequency domain resources used for random access represents the width of the frequency domain resources occupied starting from the frequency domain start position of the frequency domain resources used for random access. This configuration is suitable for situations where multiple frequency domain resources are frequency-division multiplexed at the same time; (3) The number of frequency domain resources X related to random access. That is, the number of frequency domain resources X that can be used for random access within the same time unit; (4) The frequency domain offset of the frequency domain start position or frequency domain end position of the frequency domain resource used for random access relative to the frequency domain reference point used for the random access resource; (5) Frequency domain spacing between two adjacent frequency domain resources used for random access in the frequency domain.

[0140] The frequency domain interval between two adjacent frequency domain resources used for random access is the time interval from the start or end position of the frequency domain of the previous frequency domain resource used for random access to the start position of the frequency domain of the next frequency domain resource used for random access. It can be a predefined or preconfigured real number, or it can be X-1 predefined values. This configuration is suitable for configuring a group of X frequency domain resources, where X is a real number greater than 1. The starting position of the frequency domain can also be called the frequency starting position or the frequency domain starting point, or simply the frequency domain starting point or starting point. Correspondingly, the ending position of the frequency domain can also be called the frequency ending position or the frequency domain ending point, or simply the frequency domain ending point.

[0141] In this embodiment of the disclosure, the resources related to random access are further determined based on frequency domain reference points related to random access, wherein the frequency domain reference point is the starting position of the frequency domain corresponding to the ARFCN (Absolute Radio-Frequency Channel Number).

[0142] Optionally, the frequency domain reference point used for random access resources includes at least one of the following: (1) Absolute frequency point PointA; (2) The frequency domain start position of the uplink activated BWP (Bandwidth Part) PRB0 (Physical Resource Block 0); (3) The frequency domain end position of the 10th PRB of the SSB (Synchronization Signal Block); (4) Indicated ARFCN (5) The starting position of the uplink frequency domain of the channel grid operation band; (6) Center frequency position of the channel grid operation band; The center frequency position of the channel grid operation band refers to the average value of the start position and the end position of the channel grid in the frequency domain. (7) The starting position of the channel grid operation frequency band determined based on the channel grid operation frequency band where the downlink signal and / or downlink channel are located; (8) The frequency domain start position of the indicated GSCN (Global Synchronization Channel Number); (9) An uplink frequency domain reference point determined based on the frequency domain start position of the downlink signal and / or the downlink channel and a predefined or pre-configured frequency domain offset (the fifth offset), which is particularly applicable to the determination of the frequency domain reference point of the uplink band in the FDD band; (10) The uplink frequency domain reference point determined based on the frequency domain end position and frequency domain offset (fifth offset) of the downlink signal and / or downlink channel is also applicable to the determination method of the frequency domain reference point of the uplink frequency band in the FDD band; (11) The starting position of the frequency domain for uplink carrier transmission, such as the starting position of the frequency domain for uplink carriers used for reflection.

[0143] In this embodiment of the disclosure, the configuration information further includes a fifth offset, wherein the fifth offset is a frequency domain offset between a frequency domain reference point and the frequency domain start or end position of the resource related to random access. That is, the terminal device can determine the frequency domain start position of a frequency domain resource for random access based on a frequency domain reference point for the random access resource and a predefined or pre-configured frequency domain offset (the fifth offset), and determine a frequency domain resource for random access based on the frequency domain start position and the bandwidth of the frequency domain resource for random access.

[0144] In one optional implementation, the terminal device can use a frequency domain reference point for random access resources and a set of X predefined or preconfigured frequency domain offsets {F1,…,F...} X A set of X frequency domain resources for random access is determined, with their frequency domain starting positions. Based on these starting positions and the bandwidth of the frequency domain resources used for random access, a set of X frequency domain resources for random access is determined. The frequency domain offset is the frequency domain interval from the frequency domain reference point of the resources used for random access to the frequency domain starting position of the resources used for random access.

[0145] In another optional implementation, the configuration information further includes a sixth offset, where the sixth offset is the frequency domain offset between the frequency domain start position of the k-th resource related to random access and the frequency domain start position of the first resource related to random access; wherein the first resource related to random access is the resource related to random access determined based on the fifth offset and a frequency domain reference point, and k is an integer greater than 1. That is, the terminal device can determine the frequency domain start position of the first frequency domain resource for random access based on a frequency domain reference point for the random access resource and a predefined or pre-configured frequency domain offset (the fifth offset), and determine the frequency domain start positions of the subsequent X-1 frequency domain resources for random access based on the frequency domain start or end position of the first frequency domain resource for random access and X-1 predefined or pre-configured frequency domain offsets {F2,…,FX}. The frequency domain offset is the frequency domain interval from the frequency domain start position of the first resource related to random access to the frequency domain start positions of each subsequent frequency domain resource for random access.

[0146] Alternatively, the sixth offset is the frequency domain interval between two adjacent random access-related resources in the frequency domain; where the first random access-related resource is the random access-related resource determined based on the fifth offset and the frequency domain reference point, and k is an integer greater than 1. That is, the terminal device can determine the frequency domain start position of the first random access-related frequency domain resource based on the frequency domain reference point used for the random access resource and a predefined or pre-configured frequency domain offset (the fifth offset), and determine the frequency domain start positions of the subsequent X-1 random access-related frequency domain resources based on the frequency start or end position of the first random access-related frequency domain resource and the frequency domain interval R1 (the sixth offset) between two adjacent random access-related frequency domain resources in the frequency domain. Here, R1 is a predefined or pre-configured value, a real number greater than 0.

[0147] In the embodiments of this disclosure, the frequency domain offset and / or bandwidth and / or frequency domain spacing can be determined by multiples of absolute frequency units, such as multiples of 1 Hz, 1 kHz, etc.; or by the number of frequency units relative to the frequency unit. A frequency unit (also called a frequency domain unit) can be: a subcarrier, a subcarrier group (composed of multiple subcarriers), a resource block (RB), also called a physical resource block (PRB), a resource block group (composed of multiple RBs), a bandwidth part (BWP), a bandwidth part group (composed of multiple BWPs), a bandwidth / carrier, a bandwidth group / carrier group, or the bandwidth of a single carrier signal; the frequency domain unit can also be a combination of multiple granularities, such as M1 PRBs plus M2 subcarriers.

[0148] Furthermore, embodiments of this disclosure also provide a method for determining a sequence for random access.

[0149] In this embodiment of the disclosure, the configuration information related to random access may include configuration information for the sequence used for random access, and the configuration information may also include, but is not limited to, at least one of the following: (1) The total number of sequences related to random access. Based on the configured total number of sequences, the terminal device randomly selects a sequence index with equal probability and uses the sequence corresponding to the selected sequence index as the sequence used for random access; (2) Sequence length related to random access. The terminal device randomly generates a 0-1 bit sequence of fixed length based on the sequence length used for random access, and uses it as the sequence for random access.

[0150] (3) Sequence indexes related to random access.

[0151] In this embodiment of the disclosure, a sequence related to random access can be generated based on the terminal device's IMSI (International Mobile Subscriber Identity), thus uniquely generating a fixed-length sequence for random access. Optionally, the sequence for random access can be a truncated IMSI. The length of the sequence for random access is predefined or preconfigured.

[0152] Furthermore, embodiments of this disclosure also provide resource configuration for random access in a non-contention-based random access procedure.

[0153] In this embodiment of the disclosure, the configuration information further includes information about known terminal devices; wherein, the information about known terminal devices includes at least one of the following: a terminal device index; a resource index; and a sequence index.

[0154] Optionally, when a downlink signal and / or downlink channel instructs one or more terminal devices with known terminal device indices to perform a non-contention-based random access procedure, the configuration information for the resources used for random access includes at least one of the following: (1) A terminal device index and / or an index of time-frequency resources for random access and / or a sequence index for random access, for the transmission of a non-contentionable random access sequence. The terminal device initiates a random access procedure by sending an indicated sequence for random access on the time-frequency resources corresponding to the index of time-frequency resources for random access.

[0155] (2) A set of S configuration information for resources used for random access. In the configuration information of the S resources used for random access, the configuration information of one resource used for random access may include a terminal device index and / or an index of a time-frequency resource used for random access and / or a sequence index used for random access, such as... Figure 9 As shown.

[0156] (3) A set of S terminal device indices and / or S time-frequency resource indices for random access and / or S sequence indices for random access, such as Figure 10 As shown.

[0157] In this embodiment, the resource indexing involves numbering the first time-domain resource for each frequency-domain resource, and then sequentially numbering the other time-domain resources in the same manner. In other words, the association between the time-frequency resources used for random access and their indexes can be as follows: first, frequency-domain resource numbering is performed, followed by time-domain resource numbering. The first frequency-domain resource is determined based on a frequency-domain reference point and a predefined or pre-configured frequency offset (the fifth offset), and the first time-domain resource is determined based on a time-domain reference point and a predefined or pre-configured time-domain offset (the first offset), i.e., the time-frequency resource index is 1. The second time-frequency resource for random access is determined based on the determined location of the second frequency-domain resource and the first time-domain resource, i.e., the time-frequency resource index is 2, and so on for other resource numbering.

[0158] Specifically, the resource index skips the resource numbering corresponding to the frequency domain position of the uplink carrier used for reflection. In particular, if the terminal device reports UE capability supporting frequency division multiplexing, the terminal device does not select the time-frequency resource corresponding to the frequency of the uplink carrier used for reflection as the time-frequency resource for random access. The association between the time-frequency resource for random access and the time-frequency resource index can be that frequency domain resource numbering is performed first, followed by time domain resource numbering, and the time-frequency resource corresponding to the frequency domain position of the uplink carrier used for reflection is skipped.

[0159] In this embodiment of the disclosure, if the terminal device's capability includes support for frequency division multiplexing (FDM), the resources related to random access are mapped according to the ascending order of the frequency domain resource index for FDM, and then mapped according to the ascending order of the time domain resource index; that is, the terminal device first maps according to the ascending order of the frequency domain resource index for FDM used for random access, and then maps according to the ascending order of the time domain resource index for random access. And / or, if the terminal device does not include the capability, the resources related to random access are mapped according to the ascending order of the time domain resource index; that is, if the terminal device does not support the UE capability of frequency division multiplexing, the terminal device maps according to the ascending order of the time domain resource index for random access.

[0160] This disclosure also provides a method executed by a terminal device in a communication system, such as... Figure 11 As shown, the method includes: Step S201: Obtain configuration information related to random access from the base station. The configuration information includes a fifth offset, wherein the fifth offset is the frequency domain offset between the frequency domain reference point and the frequency domain start or end position of the resource related to random access, and the frequency domain reference point is the frequency domain start position corresponding to the ARFCN. Step S202: Determine the resources related to random access based on the configuration information and frequency domain reference points; Step S203: Based on resources, send a random access signal.

[0161] In one optional implementation, the frequency domain reference point further includes at least one of the following: an absolute frequency point; the frequency domain start position of the uplink active BWP PRB0; the frequency domain end position of the 10th PRB of the SSB; the uplink frequency domain start position of the channel grid operation band; the center frequency domain position of the channel grid operation band; the start position of the channel grid operation band determined based on the channel grid operation band where the downlink signal and / or downlink channel is located; the frequency domain start position of the GSCN; the uplink frequency domain reference point determined based on the frequency domain start position and frequency domain offset of the downlink signal and / or downlink channel; the uplink frequency domain reference point determined based on the frequency domain end position and frequency domain offset of the downlink signal and / or downlink channel; and the frequency domain start position for uplink carrier transmission.

[0162] In one alternative implementation, the fifth offset is a frequency domain offset between the frequency domain reference point and the frequency domain start or end position of the resource associated with random access.

[0163] In an optional implementation, the configuration information further includes a sixth offset, wherein, The sixth offset is the frequency domain spacing between two adjacent random access-related resources; or, The sixth offset is the frequency domain offset between the frequency domain starting position of the kth resource related to random access and the frequency domain starting position of the first resource related to random access. The first resource related to random access is the resource related to random access determined based on the fifth offset and the frequency domain reference point, where k is an integer greater than 1.

[0164] In one alternative implementation, the configuration information further includes: the number X of frequency domain resources associated with random access.

[0165] In one optional implementation, the configuration information further includes at least one of the following: the total number of sequences related to random access; the sequence length related to random access; and the sequence index related to random access.

[0166] In an alternative implementation, the method further includes: generating a sequence of random access related to the sequence length based on the International Mobile Subscriber Identity (IMSI).

[0167] In one optional implementation, the configuration information further includes: information about known terminal devices; wherein the information about known terminal devices includes at least one of the following: a terminal device index; a resource index; and a sequence index.

[0168] In one alternative implementation, the resource index is used to number the first time-domain resource for each frequency-domain resource, and then to number the other time-domain resources in the same manner, wherein the resource index skips the resource corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0169] In one alternative implementation, if the terminal device's capability includes support for frequency division multiplexing, the resources related to random access are mapped in ascending order of the frequency domain resource index of frequency division multiplexing, and then mapped in ascending order of the time domain resource index; and / or, if the terminal device does not include the capability, the resources related to random access are mapped in ascending order of the time domain resource index.

[0170] For a detailed functional description of the method executed by the terminal device in the communication system provided in this disclosure, please refer to the corresponding description above, which will not be repeated here.

[0171] This disclosure also provides a method executed by a base station in a communication system, such as... Figure 12 As shown, the method includes: Step S301: Send configuration information related to random access to the terminal device. The configuration information includes a first offset. Step S302: Receive the random access signal sent by the terminal device, wherein the transmission resources of the random access signal are determined based on configuration information and time-domain reference points related to random access, and the time-domain reference points are time-domain locations related to the downlink channel and / or downlink signal.

[0172] In one optional implementation, the time-domain reference point includes at least one of the following: the time-domain start position of the synchronization signal; the time-domain end position of the synchronization signal; the time-domain start position of the downlink signal and / or downlink channel carrying configuration information; and the time-domain end position of the downlink signal and / or downlink channel carrying configuration information.

[0173] In one alternative implementation, the first offset is a time-domain offset between a time-domain reference point and the time-domain start or end position of the resource associated with random access.

[0174] In one optional implementation, the configuration information further includes a second offset, wherein the second offset is the time interval between two adjacent random access-related resources in the time domain; or, the second offset is the time domain offset between the time domain start position of the i-th random access-related resource and the time domain start position of the first random access-related resource; wherein the first random access-related resource is a random access-related resource determined based on the first offset and a time domain reference point, and i is an integer greater than 1.

[0175] In one alternative implementation, the configuration information further includes: the number M of time-domain resources associated with random access. In one optional implementation, the configuration information further includes a third offset, wherein the third offset is a time-domain offset between the start position of the period associated with random access or synchronization and the time-domain start or end position of the resource associated with random access; and the first offset is a time-domain offset between a time-domain reference point and the start position of the period associated with random access or synchronization.

[0176] In one optional implementation, the configuration information further includes a fourth offset, wherein the fourth offset is the time interval between two adjacent random access-related resources in the time domain within the same period; or, the fourth offset is the time domain offset between the time domain start position of the j-th random access-related resource and the time domain start position of the first random access-related resource or the start position of the period within the same period; wherein the first random access-related resource is a random access-related resource determined based on the third offset and the time domain start position of the period, and j is an integer greater than 1.

[0177] In one optional implementation, the configuration information further includes: the number N of time-domain resources related to random access within the same period. In one alternative implementation, the resources associated with random access are further determined based on a frequency domain reference point associated with random access, wherein the frequency domain reference point is the frequency domain starting position corresponding to the ARFCN.

[0178] In one optional implementation, the frequency domain reference point further includes at least one of the following: an absolute frequency point; the frequency domain start position of the uplink active BWP PRB0; the frequency domain end position of the 10th PRB of the SSB; the uplink frequency domain start position of the channel grid operation band; the center frequency domain position of the channel grid operation band; the start position of the channel grid operation band determined based on the channel grid operation band where the downlink signal and / or downlink channel is located; the frequency domain start position of the GSCN; the uplink frequency domain reference point determined based on the frequency domain start position and frequency domain offset of the downlink signal and / or downlink channel; the uplink frequency domain reference point determined based on the frequency domain end position and frequency domain offset of the downlink signal and / or downlink channel; and the frequency domain start position for uplink carrier transmission.

[0179] In one alternative implementation, the configuration information further includes a fifth offset, wherein the fifth offset is a frequency domain offset between a frequency domain reference point and the frequency domain start or end position of a resource associated with random access.

[0180] In one optional implementation, the configuration information further includes a sixth offset, wherein the sixth offset is the frequency domain spacing between two adjacent random access-related resources in the frequency domain; or, the sixth offset is the frequency domain offset between the frequency domain starting position of the kth random access-related resource and the frequency domain starting position of the first random access-related resource; wherein the first random access-related resource is a random access-related resource determined based on the fifth offset and the frequency domain reference point, and k is an integer greater than 1.

[0181] In one alternative implementation, the configuration information further includes: the number X of frequency domain resources associated with random access.

[0182] In one optional implementation, the configuration information further includes at least one of the following: the total number of sequences related to random access; the sequence length related to random access; and the sequence index related to random access.

[0183] In one alternative implementation, the sequence length associated with random access is generated by the terminal device based on the International Mobile Subscriber Identity (IMSI).

[0184] In one optional implementation, the configuration information further includes: information about known terminal devices; wherein the information about known terminal devices includes at least one of the following: a terminal device index; a resource index; and a sequence index.

[0185] In one alternative implementation, the resource index is used to number the first time-domain resource for each frequency-domain resource, and then to number the other time-domain resources in the same manner, wherein the resource index skips the resource corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0186] In one alternative implementation, if the terminal device's capability includes support for frequency division multiplexing, the resources related to random access are mapped in ascending order of the frequency domain resource index of frequency division multiplexing, and then mapped in ascending order of the time domain resource index; and / or, if the terminal device does not include the capability, the resources related to random access are mapped in ascending order of the time domain resource index.

[0187] This disclosure also provides a method executed by a base station in a communication system, such as... Figure 13 As shown, the method includes: Step S401: Send configuration information related to random access to the terminal device. The configuration information includes a fifth offset, wherein the fifth offset is the frequency domain offset between the frequency domain reference point and the frequency domain start or end position of the resource related to random access, and the frequency domain reference point is the frequency domain start position corresponding to ARFCN. Step S402: Receive the random access signal sent by the terminal device, wherein the transmission resources of the random access signal are determined based on configuration information and frequency domain reference points.

[0188] In one optional implementation, the frequency domain reference point further includes at least one of the following: an absolute frequency point; the frequency domain start position of the uplink active BWP PRB0; the frequency domain end position of the 10th PRB of the SSB; the uplink frequency domain start position of the channel grid operation band; the center frequency domain position of the channel grid operation band; the start position of the channel grid operation band determined based on the channel grid operation band where the downlink signal and / or downlink channel is located; the frequency domain start position of the GSCN; the uplink frequency domain reference point determined based on the frequency domain start position and frequency domain offset of the downlink signal and / or downlink channel; the uplink frequency domain reference point determined based on the frequency domain end position and frequency domain offset of the downlink signal and / or downlink channel; and the frequency domain start position for uplink carrier transmission.

[0189] In one alternative implementation, the fifth offset is a frequency domain offset between the frequency domain reference point and the frequency domain start or end position of the resource associated with random access.

[0190] In one optional implementation, the configuration information further includes a sixth offset, wherein the sixth offset is the frequency domain spacing between two adjacent random access-related resources in the frequency domain; or, the sixth offset is the frequency domain offset between the frequency domain starting position of the kth random access-related resource and the frequency domain starting position of the first random access-related resource; wherein the first random access-related resource is a random access-related resource determined based on the fifth offset and the frequency domain reference point, and k is an integer greater than 1.

[0191] In one alternative implementation, the configuration information further includes: the number X of frequency domain resources associated with random access.

[0192] In one optional implementation, the configuration information further includes at least one of the following: the total number of sequences related to random access; the sequence length related to random access; and the sequence index related to random access.

[0193] In one alternative implementation, the sequence length associated with random access is generated by the terminal device based on the International Mobile Subscriber Identity (IMSI).

[0194] In one optional implementation, the configuration information further includes: information about known terminal devices; wherein the information about known terminal devices includes at least one of the following: a terminal device index; a resource index; and a sequence index.

[0195] In one alternative implementation, the resource index is used to number the first time-domain resource for each frequency-domain resource, and then to number the other time-domain resources in the same manner, wherein the resource index skips the resource corresponding to the frequency domain position where the uplink carrier used for reflection is located.

[0196] In one alternative implementation, if the terminal device's capability includes support for frequency division multiplexing, the resources related to random access are mapped in ascending order of the frequency domain resource index of frequency division multiplexing, and then mapped in ascending order of the time domain resource index; and / or, if the terminal device does not include the capability, the resources related to random access are mapped in ascending order of the time domain resource index.

[0197] The method executed by the base station in the communication system provided in this disclosure has the same implementation principle as that on the terminal device side and has the same technical effect. For a detailed description of the functions on the base station side, please refer to the description of the corresponding methods on the terminal device side above, which will not be repeated here.

[0198] This disclosure provides an electronic device, including a transceiver configured to transmit and receive signals, and a processor coupled to the transceiver and configured to implement the steps of the foregoing method embodiments. Optionally, the electronic device may be a terminal device, in which case the processor is configured to implement the steps of the method embodiments executed by the terminal device. Detailed functional descriptions and beneficial effects can be found in the foregoing descriptions of the method embodiments executed by the terminal device, and will not be repeated here. Optionally, the electronic device may be a base station, in which case the processor is configured to implement the steps of the method embodiments executed by the base station. Detailed functional descriptions and beneficial effects can be found in the foregoing descriptions of the method embodiments executed by the base station, and will not be repeated here. In practical applications, a terminal device or a base station can be understood as different network nodes.

[0199] This disclosure also provides an electronic device including a processor, and optionally, a transceiver and / or memory coupled to the processor, the processor being configured to perform the steps of the method provided in any optional embodiment of this disclosure.

[0200] Figure 14 The diagram shows a structural schematic of an electronic device to which an embodiment of the present invention applies, such as... Figure 14 As shown, Figure 14The illustrated electronic device 4000 includes a processor 4001 and a memory 4003. The processor 4001 and the memory 4003 are connected, for example, via a bus 4002. Optionally, the electronic device 4000 may further include a transceiver 4004, which can be used for data interaction between the electronic device and other electronic devices, such as sending and / or receiving data. It should be noted that in practical applications, the transceiver 4004 is not limited to one type, and the structure of the electronic device 4000 does not constitute a limitation on the embodiments of this disclosure. Optionally, the electronic device may be a first network node, a second network node, or a third network node.

[0201] Processor 4001 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with this disclosure. Processor 4001 may also be a combination that implements computational functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0202] Bus 4002 may include a pathway for transmitting information between the aforementioned components. Bus 4002 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. Bus 4002 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 14 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0203] The memory 4003 may be ROM (Read Only Memory) or other types of static storage devices capable of storing static information and instructions, RAM (Random Access Memory) or other types of dynamic storage devices capable of storing information and instructions, or EEPROM (Electrically Erasable Programmable Read Only Memory), CD-ROM (Compact Disc Read Only Memory) 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, other magnetic storage devices, or any other medium capable of carrying or storing computer programs and capable of being read by a computer, without limitation herein.

[0204] The memory 4003 is used to store computer programs that execute embodiments of the present disclosure, and is controlled by the processor 4001 to execute them. The processor 4001 is used to execute the computer programs stored in the memory 4003 to implement the steps shown in the foregoing method embodiments.

[0205] This disclosure provides a computer-readable storage medium storing a computer program, which, when executed by a processor, can implement the steps and corresponding content of the aforementioned method embodiments.

[0206] This disclosure also provides a computer program product, including a computer program that, when executed by a processor, can implement the steps and corresponding content of the aforementioned method embodiments.

[0207] The terms “first,” “second,” “third,” “fourth,” “1,” “2,” etc. (if present) in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in a sequence other than that shown in the figures or text.

[0208] It should be understood that although arrows indicate various operation steps in the flowcharts of the embodiments of this disclosure, the order in which these steps are implemented is not limited to the order indicated by the arrows. Unless explicitly stated herein, in some implementation scenarios of the embodiments of this disclosure, the implementation steps in each flowchart can be executed in other orders as required. Furthermore, some or all of the steps in each flowchart may include multiple sub-steps or multiple stages based on the actual implementation scenario. Some or all of these sub-steps or stages can be executed at the same time, and each sub-step or stage can also be executed at different times. In scenarios where execution times differ, the execution order of these sub-steps or stages can be flexibly configured as required, and the embodiments of this disclosure do not limit this.

[0209] The above text and accompanying drawings are provided as examples only to help the reader understand this disclosure. They are not intended and should not be construed as limiting the scope of this disclosure in any way. Although certain embodiments and examples have been provided, it will be apparent to those skilled in the art, based on the content disclosed herein, that changes can be made to the illustrated embodiments and examples, and other similar implementations based on the technical concept of this disclosure can be adopted without departing from the scope of this disclosure, and these modifications and modifications are also within the protection scope of the embodiments of this disclosure.

Claims

1. A method executed by a terminal device in a communication system, characterized in that, include: Obtain configuration information related to random access from the base station; Based on the configuration information, determine the resources related to random access; Based on the resources, a random access signal is sent.

2. The method according to claim 1, characterized in that, The configuration information also includes a first offset, which is a time-domain offset between a time-domain reference point and the time-domain start or end position of a resource related to random access.

3. The method according to claim 2, characterized in that, The configuration information also includes a second offset, wherein... The second offset is the time interval between two adjacent random access-related resources in the time domain; or... The second offset is the time-domain offset between the time-domain starting position of the i-th resource related to random access and the time-domain starting position of the first resource related to random access. The first resource related to random access is the resource related to random access determined based on the first offset and the time-domain reference point, where i is an integer greater than 1.

4. The method according to claim 3, characterized in that, The configuration information also includes: The number of time-domain resources M related to random access.

5. The method according to claim 1, characterized in that, The configuration information also includes a third offset, wherein... The third offset is the time-domain offset between the start position of the cycle related to random access or synchronization and the time-domain start or end position of the resource related to random access; The first offset is the time-domain offset between the time-domain reference point and the period start position related to random access or synchronization.

6. The method according to claim 5, characterized in that, The configuration information also includes a fourth offset, wherein, The fourth offset is the time interval between two temporally adjacent resources related to random access within the same period; or, The fourth offset is the time-domain offset between the time-domain start position of the j-th resource related to random access within the same period and the time-domain start position of the first resource related to random access or the period start position of the current period. The first resource related to random access is the resource related to random access determined based on the third offset and the time-domain start position of the current period, where j is an integer greater than 1.

7. The method according to claim 5, characterized in that, The configuration information also includes: The number of time-domain resources N related to random access within the same period.

8. A method executed by a base station in a communication system, characterized in that, include: Send configuration information related to random access to the terminal device; The terminal device receives a random access signal, wherein the transmission resources of the random access signal are determined based on the configuration information.

9. A terminal device, characterized in that, include: transceiver, and A processor, coupled to the transceiver and configured to perform the method according to any one of claims 1-7.

10. A base station, characterized in that, include: transceiver, and A processor, coupled to the transceiver and configured to perform the method of claim 8.

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