Random access method, communication apparatus, storage medium, and program product

Abstract

The present disclosure provides a random access method, a communication apparatus, a storage medium, and a program product. The random access method comprises: receiving a target synchronization signal block among at least one synchronization signal block, the at least one synchronization signal block being associated with multiple pieces of random access configuration information; acquiring random access configuration information associated with the target synchronization signal block; and performing random access on the basis of the random access configuration information associated with the target synchronization signal block.

Description

Random access method, communication apparatus, storage medium and program product

[0001] This application claims priority to Chinese Patent Application No. 202410728266.1, filed on June 5, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the field of communication technology, and in particular, to a random access method, a communication apparatus, a storage medium and a program product. BACKGROUND

[0003] In a mobile communication scenario, generally, a terminal searches for a synchronization signal transmitted by a base station after being powered on, and performs cell time-frequency synchronization; then, the terminal acquires network-related parameters, such as bandwidth, frame structure and the like, by reading a system information block on a broadcast channel, and thus performs a random access operation. SUMMARY

[0004] In an aspect, a random access method is provided. The random access method includes: receiving a target synchronization signal block in at least one synchronization signal block, the at least one synchronization signal block being associated with a plurality of random access configuration information; acquiring random access configuration information associated with the target synchronization signal block; and performing random access based on the random access configuration information associated with the target synchronization signal block.

[0005] In another aspect, another random access method is provided. The random access method includes: transmitting a target synchronization signal block in at least one synchronization signal block, the at least one synchronization signal block being associated with a plurality of random access configuration information.

[0006] In yet another aspect, a first node is provided. The first node includes: a processing unit and a communication unit. The communication unit is configured to receive a target synchronization signal block in at least one synchronization signal block, the at least one synchronization signal block being associated with a plurality of random access configuration information. The communication unit is further configured to acquire random access configuration information associated with the target synchronization signal block. The processing unit is configured to perform random access based on the random access configuration information associated with the target synchronization signal block.

[0007] In yet another aspect, a second node is provided. The second node includes: a communication unit. The communication unit is configured to transmit a target synchronization signal block in at least one synchronization signal block, the at least one synchronization signal block being associated with a plurality of random access configuration information.

[0008] In yet another aspect, a communication apparatus is provided. The communication apparatus includes: a memory and a processor. The memory is coupled to the processor; the memory is configured to store a computer program; and the processor is configured to implement the above-described random access method when executing the computer program.

[0009] In another aspect, a computer-readable storage medium is provided, and the computer-readable storage medium has stored thereon computer program instructions which, when executed by a processor, implement the random access method described above.

[0010] In another aspect, a computer program product is provided, and the computer program product includes computer program instructions which, when executed by a processor, implement the random access method described above. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the present disclosure, the drawings needed to be used in some embodiments of the present disclosure will be briefly introduced as follows. Obviously, the drawings described in the following are only some drawings of some embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0012] FIG. 1 is a scenario diagram of a localized cell according to some embodiments of the present disclosure.

[0013] FIG. 2 is a scenario diagram of a beam sweep according to some embodiments of the present disclosure.

[0014] FIG. 3 is a mapping diagram of a synchronization signal block and a random access opportunity according to some embodiments of the present disclosure.

[0015] FIG. 4 is an architecture diagram of a communication system according to some embodiments of the present disclosure.

[0016] FIG. 5 is a flowchart of a random access method according to some embodiments of the present disclosure.

[0017] FIG. 6 is a correspondence diagram of a synchronization signal block and a system information block according to some embodiments of the present disclosure.

[0018] FIG. 7 is another correspondence diagram of a synchronization signal block and a system information block according to some embodiments of the present disclosure.

[0019] FIG. 8 is a flowchart of another random access method according to some embodiments of the present disclosure.

[0020] FIG. 9 is a grouping diagram of random access configuration information according to some embodiments of the present disclosure.

[0021] FIG. 10 is another grouping diagram of random access configuration information according to some embodiments of the present disclosure.

[0022] FIG. 11 is yet another grouping diagram of random access configuration information according to some embodiments of the present disclosure.

[0023] FIG. 12 is yet another grouping diagram of random access configuration information according to some embodiments of the present disclosure.

[0024] FIG. 13 is a correspondence diagram of a synchronization signal block and a random access opportunity according to some embodiments of the present disclosure.

[0025] FIG. 14 is a mapping diagram of a synchronization signal block and a random access opportunity according to some embodiments of the present disclosure.

[0026] FIG. 15 is a correspondence diagram of random access configuration information and a random access opportunity according to some embodiments of the present disclosure.

[0027] FIG. 16 is a mapping diagram of a random access opportunity according to some embodiments of the present disclosure.

[0028] FIG. 17 is a flowchart of another random access method according to some embodiments of the present disclosure.

[0029] FIG. 18 is a structural diagram of a first node according to some embodiments of the present disclosure.

[0030] FIG. 19 is a structural diagram of a second node according to some embodiments of the present disclosure.

[0031] FIG. 20 is a structural diagram of a communication apparatus according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0032] The technical solutions in the present disclosure will be described clearly and completely below with reference to the drawings in the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present disclosure.

[0033] It should be noted that in the present disclosure, the words “exemplary” or “for example” are used to describe examples, instances, or illustrations. Any embodiment or design scheme described in the present disclosure by the words “exemplary” or “for example” should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words “exemplary” or “for example” are used to present the relevant concept in a specific manner.

[0034] Hereinafter, the terms “first”, “second”, and the like are used only for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined by “first”, “second”, and the like can explicitly or implicitly include one or more of the features.

[0035] In the description of the disclosure, unless otherwise specified, " / " means the meaning of "or", for example, A / B can mean A or B. "And / or" herein is only used to describe the association relationship of the associated objects, which means that there can be three relationships. For example, A and / or B can mean: only A, A and B, only B. In addition, "at least one" means one or more, and "multiple" means two or more than two.

[0036] The current communication system provides targeted network deployment solutions for key application scenarios such as enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (URLLC), and massive machine type communication (mMTC) to meet complex and changing communication needs.

[0037] The initial random access procedure of the terminal mainly includes the following two processes: cell search process and uplink synchronization process.

[0038] 1. Cell search process: In this process, the terminal performs cell search and downlink synchronization after searching for a suitable cell. The terminal determines the cell ID (identity) and aligns the downlink frame boundary by detecting the primary synchronization signal (PSS) / secondary synchronization signal (SSS). Then, by detecting the physical broadcast channel (PBCH), the terminal acquires the master information block (MIB), and the terminal acquires the system frame number and half-frame indication from the MIB, thereby completing the radio frame timing and half-frame timing. At the same time, the terminal determines the time slot and symbol of the current synchronization signal through the synchronization signal block (SSB) index in the MIB message and the pattern of the synchronization broadcast block set used by the current frequency band, thereby completing the time slot timing. In new radio (NR), PSS, SSS and MIB are contained in SSB.

[0039] 2. Uplink synchronization process: the terminal completes uplink synchronization with the base station through the random access process. The terminal acquires the MIB message in the cell search process, and then blindly detects the downlink control information (DCI) 1_0 based on the configuration of CORESET0 in the MIB. The CORESET0 is the control resource set corresponding to the search space of the system information block (SIB). In this way, the terminal can receive the physical downlink shared channel (PDSCH) to obtain the system information, including the SIB1 and other SIB messages. The SIB1 is used to configure the random access channel (RACH) parameter configuration information in the random access process. In the 5G NR system, other system information (OSI) other than MIB / SIB1 can not be sent in a periodic broadcast manner, but can be triggered by the base station to broadcast a specific type of system information based on the request of the terminal, i.e. on-demand transmission. The request for OSI can be triggered by PRACH, Msg3 or wake-up signal (WUS).

[0040] The base station usually provides mobile communication services in the form of a cell, such as a conventional cellular cell and a cell free.

[0041] For a cellular cell, the base station can implement a regionalized cell through beamforming. For example, as shown in FIG. 1, the base station divides the entire cell into 12 regions (B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, B11, B12) through 4 horizontal beams (H1, H2, H3, H4) and 3 vertical beams (V1, V2, V3). The correspondence between the regions and the beams is as follows:

[0042] Region B1 corresponds to horizontal beam H1 and vertical beam V1, region B2 corresponds to horizontal beam H1 and vertical beam V2, and so on. In addition, the above regions can also be combined according to needs, which is not limited in the present disclosure.

[0043] For a cell free, multiple base stations in a certain area can cooperate to provide mobile communication services for terminals. The cell free can also implement a regionalized cell communication.

[0044] In addition, with the development of communication technology, the base station can also communicate through new spectrum resources to improve throughput and network performance, such as 6.1GHz-7.1GHz spectrum and 7GHz-24GHz spectrum. In the traditional communication system, since the separation distance between the transmit beam Tx and the terminal is usually greater than the Rayleigh length, the transmission of the base station in the channel implementation is usually modeled based on the far-field assumption. However, technologies such as intelligent metasurface greatly increase the size of the panel and the number of elements of the transmitting unit, and the deployment of multiple input multiple output (MIMO) nodes, which further reduces the separation distance between the base station and the terminal, thereby expanding the near-field range. In this way, the base station can achieve higher spatial multiplexing through beam focusing in the near-field range, thereby improving the cell capacity. The base station can also achieve regionalized cell communication based on artificial intelligence (AI) prediction and terminal residence information assistance.

[0045] In summary, cell regionalization is mainly used to meet the different needs of terminals, such as distance, different channel conditions, different UE capabilities (such as ordinary terminals, low-capability terminals (redcap UE)), whether to support sub-band full duplex, whether to support repeated transmission, whether to support contention-based random access, and so on.

[0046] Currently, all terminals within the coverage of the base station use the same random access configuration for random access, such as the same physical random access channel (PRACH) format, the same subcarrier spacing, the same power control parameters, and so on. To ensure that all terminals in the network can complete uplink access, the current network usually configures the PRACH format according to the worst terminal. However, the communication quality of different terminals is often different, which leads to the fact that part of the terminals use random access configuration that does not match the actual communication quality when performing random access. In fact, the diversity of terminal requirements in the entire network has not been well met, and the access effect of the terminal performing random access is poor.

[0047] In view of this, in the technical solutions provided in the present disclosure, the first node can receive a target synchronization signal block in at least one synchronization signal block, thereby obtaining random access configuration information associated with the target synchronization signal block; then, the first node can perform random access based on the random access configuration information associated with the target synchronization signal block. The at least one synchronization signal block is associated with a plurality of random access configuration information. In this way, the present disclosure establishes an association between the synchronization signal block and the random access configuration information, thereby realizing the configuration of multiple sets of random access configuration information in the network, so that the terminals in the network can perform random access through different random access configuration information to meet the different communication needs of the terminals, thereby improving the access effect of the terminals performing random access.

[0048] In the embodiments of the present disclosure, the network architecture of a mobile communication network (including but not limited to 3G, 4G, 5G and future mobile communication networks) can at least include a first communication node and a second communication node. It should be understood that in the present example, in the downlink, the first communication node can be a network side device (for example, including but not limited to a base station), and the second communication node can be a terminal side device (for example, including but not limited to a terminal). Of course, in the uplink, the first communication node can also be a terminal side device, and the second communication node can also be a network side device. In the communication between the two communication nodes, the first communication node and the second communication node can both be a base station or a terminal. The first communication node and the second communication node can be referred to as the first node and the second node, respectively.

[0049] Exemplarily, taking the first communication node as a terminal and the second communication node as a base station as an example, as shown in FIG. 4, a communication system according to an embodiment of the present disclosure is shown. The communication system includes a terminal 401 and a base station 402. The terminal 401 and the base station 402 can be one or more, and the number is not limited.

[0050] The technical solutions of the embodiments of the present disclosure can be applied to various communication systems, for example: code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and other systems, etc. The term "system" can be replaced by "network". The CDMA system can implement, for example, universal terrestrial radio access (UTRA), CDMA2000, and other wireless technologies. UTRA can include wideband CDMA (WCDMA) technology and other CDMA variants. CDMA2000 can cover interim standard (IS) 2000 (IS-2000), IS-95, and IS-856 standards. The TDMA system can implement, for example, global system for mobile communication (GSM) and other wireless technologies. The OFDMA system can implement, for example, evolved UTRA (E-UTRA), ultra mobile broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX (World Interoperability for Microwave Access)), IEEE 802.20, Flash OFDMA, and other wireless technologies. UTRA and E-UTRA are UMTS and UMTS evolution versions. The 3rd Generation Partnership Project (3GPP) in long term evolution (LTE) and various versions based on LTE evolution are new versions of UMTS using E-UTRA. The communication system can also be a 5G communication system, a new radio (NR) system, and a 6G communication system. In addition, the communication system can also be applicable to future-oriented communication technologies, all of which are applicable to the technical solutions provided by the embodiments of the present disclosure.

[0051] The terminal 401 is a device with wireless communication function, which can be deployed on land (including indoor or outdoor, handheld or vehicle-mounted), on water (such as ships, etc.), and in the air (for example, on airplanes, balloons and satellites, etc.). The terminal 401 is also called user equipment (UE), mobile station (MS), mobile terminal (MT), terminal device, etc., which is a device providing voice and / or data connectivity for users. For example, the terminal 401 includes handheld devices with wireless connection function, vehicle-mounted devices, etc. At present, the terminal 401 can be a mobile phone, a tablet computer, a notebook computer, a palm computer, a mobile internet device (MID), a wearable device (for example, a smart watch, a smart bracelet, a pedometer, etc.), a vehicle-mounted device (for example, a car, a bicycle, an electric vehicle, an airplane, a ship, a train, a high-speed rail, etc.), a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a smart home device (for example, a refrigerator, a television, an air conditioner, an electric meter, etc.), a smart robot, a workshop device, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a flight device (for example, a smart robot, a hot air balloon, a drone, an airplane), etc. In a scenario where the terminal is applied in the present disclosure, the terminal is usually a terminal working on the ground, for example, a vehicle-mounted device. In the present disclosure, for the convenience of description, a chip deployed in the above device, for example, a system-on-a-chip (SOC), a baseband chip, etc., or other chips with communication function can also be referred to as a terminal.

[0052] The terminal 401 can be a vehicle with corresponding communication function, or a vehicle-mounted communication device, or other embedded communication devices, or a user handheld communication device (including a mobile phone, a tablet computer, etc.).

[0053] As an example, in the embodiments of the present disclosure, the terminal 401 can also be a wearable device. The wearable device can also be referred to as a wearable smart device, which is a general term for devices that are designed and developed by applying wearable technology to daily wear, such as glasses, gloves, watches, clothing, and shoes. The wearable device is a portable device that is directly worn on the body or integrated into the clothes or accessories of the user. The wearable device is not only a hardware device, but also has powerful functions through software support and data interaction and cloud interaction. The general wearable smart device includes devices with full functions and large sizes, which can realize complete or partial functions without relying on a smart phone, such as a smart watch or smart glasses; and devices that focus on a certain type of application function and need to be used in cooperation with other devices, such as a smart phone, such as various smart bracelets and smart jewelry for monitoring vital signs.

[0054] The base station 402 is an access network side device of the above-mentioned communication system, and has a wireless transceiver function or a chip or chip system that can be arranged in the device. The base station 402 includes but is not limited to: an access point (AP) (such as a home gateway, a router, a server, a switch, a bridge, etc.) in a WiFi (wireless fidelity) system, an evolved NodeB (eNB), a radio network controller (RNC), a NodeB (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (for example, a home evolved NodeB, or a home NodeB, HNB), a baseband unit (BBU), a wireless relay node, a wireless backhaul node, a transmission and reception point (TRP), or a transmission point (TP), etc.; it can also be a 5G base station, such as a gNB (next generation NodeB) or a transmission and reception point (TRP) or a transmission point (TP) in a new radio (NR) system, one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G system; or it can also be a network node that constitutes a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU), a roadside unit (RSU) with base station function, or a 5G access network (NG radio access network, NG-Ran) device, etc. The base station 402 also includes base stations in different networking modes, such as a master evolved NodeB (MeNB), a secondary eNB (SeNB), or a secondary gNB (SgNB). The base station 402 also includes different types of base stations, such as ground base stations, air base stations, and satellite base stations, etc.

[0055] The base station 402 is configured to transmit a target synchronization signal block in at least one synchronization signal block.

[0056] The at least one synchronization signal block is associated with a plurality of random access configuration information.

[0057] It should be noted that the at least one synchronization signal block can be an SSB defined in the current communication system, can be a signal for device communication synchronization in a future-oriented communication system, can be an SSB shared by multiple communication systems (for example, 5G / 6G universal), and can include both an SSB defined by each communication system and an SSB shared by multiple communication systems.

[0058] In some embodiments, the random access configuration information includes at least one of a physical random access (PRACH) configuration index, a physical random access (PRACH) configuration period, a preamble format, message 1 (Msg1) time domain information, a number of frequency division random access opportunities (RACH occasions, ROs) for message 1 (Msg1), a message 1 (Msg1) frequency domain starting position, a preamble target received power, a physical random access (PRACH) power ramping step size, a maximum number of random access preamble transmissions, a time window length of a random access response (RAR), a message 1 (Msg1) subcarrier spacing, a message 3 (Msg3) transmission precoding enable identification, a number of preamble sequences (in Group A) for contention-based random access, a physical random access (PRACH) root sequence index, a contention resolution timer initial value, a message 3 (Msg3) transport block size threshold, a synchronization signal block (SSB) selection reference signal receiving power (RSRP) threshold, a synchronization signal block (SSB) selection reference signal receiving power (RSRP) threshold on a supplementary uplink (SUL), a total number of preamble sequences for user random access, a synchronization signal block-random access opportunity (SSB-RO) association relationship and a number of contention-based preamble sequences corresponding to each synchronization signal block (SSB), a restricted set configuration, a message 1 (Msg1) repetition transmission identification, a number of message 1 (Msg1) repetition transmissions, a subband full duplex (SBFD) configuration, a full duplex configuration, a random access opportunity, an additional random access opportunity.

[0059] Message 1 is a message carrying a preamble sequence in a random access process, and message 3 is a message used to request to establish a connection in a random access process. In some embodiments, the sending of message 3 and the sending of message 1 are quasi co-located (QCL).

[0060] It should be noted that the base station 402 generally covers the entire cell through beam sweeping. Exemplarily, as shown in FIG. 2, each synchronization signal block corresponds to a beam direction, and the base station can transmit for one or more beam directions at a time. In this way, the base station can transmit for the beam directions required to cover the entire cell at multiple times. A synchronization signal / PBCH block set (also referred to as an SS burst set) is used to represent a set of synchronization signal blocks transmitted at multiple times in the beam sweeping. For example, the maximum number of SSBs transmitted by a cell in NR can be 4, 8, or 64.

[0061] The terminal 401 is configured to receive a target synchronization signal block in the at least one synchronization signal block.

[0062] Exemplarily, before performing random access, the terminal 401 can search for and acquire an optimal transmission beam of the base station 402 and an optimal reception beam of the terminal 401, and determine an SSB or a channel state information-reference signal (CSI-RS) whose reception quality satisfies a reception threshold through beam measurement on the SSB or the CSI-RS.

[0063] The terminal 401 is further configured to acquire random access configuration information associated with the target synchronization signal block, and perform random access based on the random access configuration information associated with the target synchronization signal block.

[0064] In combination with the above example, the terminal 401 can select a random access resource subset or a random access preamble index subset to transmit Msg1 according to the association between the synchronization signal block and the random access configuration information and the determined SSB or CSI-RS, so as to initiate a random access procedure. Correspondingly, the base station 402 detects Msg1 of random access. For the case where the terminal 401 and the base station 402 do not have beam reciprocity, since the determined transmission beam of the base station 402 and the reception beam of the terminal 401 cannot be directly used as the reception beam of the base station 402 and the transmission beam of the terminal 401, the base station 402 and the terminal 401 further need to perform uplink beam sweeping to acquire the reception beam of the base station 402 and the transmission beam of the terminal 401.

[0065] In some embodiments, there is an association relationship between the synchronization signal block and the random access opportunity. The random access opportunities corresponding to different synchronization signal blocks can be the same or different. That is, the synchronization signal block and the random access opportunity can be uniformly mapped or non-uniformly mapped.

[0066] Taking uniform mapping of synchronization signal block and random access opportunity as an example, as shown in FIG. 3, a terminal can obtain configuration parameters ssb-perRACH-Occasion and CB-PreamblesPerSSB through a high-layer parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB. Four ROs are associated with one SSB, SSB1 corresponds to four ROs on time domain position 1, SSB2 corresponds to four ROs on time domain position 2, SSB3 corresponds to four ROs on time domain position 3, and SSB4 corresponds to four ROs on time domain position 4. The RACH frequency domain resource is four, and when the value of ssb-perRACH-Occasion is 1, SSB1, SSB2, SSB3 and SSB4 correspond to one RO on each time domain position respectively. The RACH frequency domain resource is two, and when the value of ssb-perRACH-Occasion is 2, SSB1 and SSB2 correspond to the same RO, and SSB3 and SSB4 correspond to the same RO.

[0067] The second configuration parameter, CB-PreamblesPerSSB, is used to represent the number of contention-based preamble sequences corresponding to each SSB. Taking the value of ssb-perRACH-Occasion as N and the value of CB-PreamblesPerSSB as R as an example. In the case of N < 1, one SSB is associated with R consecutive ROs, and the random access preamble sequence range associated with each SSB on the RO is [0, R]. In the case of N ≥ 1, N SSBs are associated with one RO, and the random access preamble sequence range associated with each SSB on the RO is Wherein, r is an integer greater than or equal to 0 and less than or equal to N-1, respectively corresponding to N SSBs; The value of the parameter totalNumberOfRA-Preambles is an integer multiple of N.

[0068] In addition, the terminal 401 can perform uplink random access through 4-step RACH or 2-step RACH. The 4-step RACH includes two interaction processes between the terminal 401 and the base station 402, including two messages (Msg1 and Msg3) reported by the terminal 401 and two messages (Msg2 and Msg4) responded by the base station 402. The two uplink channel messages Msg1 and Msg3 in the 4-step RACH are combined into MsgA in the 2-step RACH, and the two uplink channel messages Msg2 and Msg4 in the 4-step RACH are combined into MsgB in the 2-step RACH, so that the whole RACH process is completed through 2-step interaction, thereby reducing the delay, signaling overhead and power consumption in the random access process. Since the base station 402 can schedule the PUSCH resource of the terminal 401 for reporting the control information required for access through Msg2 in the 4-step RACH, the terminal 401 does not obtain the scheduling information of the base station 402 before reporting MsgA in the 2-step RACH, so that the transmission of MsgA is a contention-based message reporting, for example, MsgA PRACH carrying a preamble sequence and MsgA PUSCH carrying control information. The MsgA PUSCH can be demodulated in multiple ways. For example, different preamble sequences are mapped to different PUSCH resources to ensure that the transmission of PUSCH reporting different preamble sequences is orthogonal, thereby avoiding interference. For another example, by using a non-orthogonal multiplexing (NOMA) technology, a low code rate processing operation is performed at the transmitting end, and an iterative interference cancellation technology is used at the receiving end to realize non-orthogonal multiplexing.

[0069] It should be noted that the terminal 401 can be configured only with the 4-step RACH, or only with the 2-step RACH, or with both the 4-step RACH and the 2-step RACH, for example, the terminal 401 can select whether to perform random access through the 4-step RACH or the 2-step RACH according to the RSRP threshold.

[0070] It should be noted that the embodiments of the present disclosure can be mutually borrowed or referred to each other, for example, the same or similar steps, method embodiments, system embodiments and device embodiments can be mutually referred to, without limitation.

[0071] FIG. 5 is a flowchart of a random access method according to an embodiment of the present disclosure. As shown in FIG. 5, the method includes the following steps 501 to 503.

[0072] In step 501, a target synchronization signal block in at least one synchronization signal block is received.

[0073] The at least one synchronization signal block is associated with the plurality of random access configuration information. That is, a set of synchronization signal blocks is associated with a set of random access configuration information.

[0074] It should be noted that the at least one synchronization signal block can be an SSB defined in the current communication system, can be a signal for device communication synchronization in a future-oriented communication system, can be an SSB shared by multiple communication systems (for example, 5G / 6G universal), and can include both the SSB defined by each communication system and the SSB shared by multiple communication systems.

[0075] In some embodiments, the at least one synchronization signal block is associated with the plurality of random access configuration information, including at least one of: one synchronization signal block in the at least one synchronization signal block is associated with one random access configuration information in the plurality of random access configuration information, that is, the synchronization signal block and the random access configuration information can be in a one-to-one association relationship; one synchronization signal block in the at least one synchronization signal block is associated with k random access configuration information in the plurality of random access configuration information, that is, the synchronization signal block and the random access configuration information can also be in a one-to-many association relationship, k is a positive integer greater than or equal to 2; n synchronization signal blocks in the at least one synchronization signal block are associated with one random access configuration information in the plurality of random access configuration information, that is, the synchronization signal block and the random access configuration information can also be in a many-to-one association relationship, n is a positive integer greater than or equal to 2; n synchronization signal blocks in the at least one synchronization signal block are associated with k random access configuration information in the plurality of random access configuration information, that is, the synchronization signal block and the random access configuration information can also be in a many-to-many association relationship.

[0076] The random access configuration information is information used for the first node to perform random access. Exemplarily, the random access configuration information comprises at least one of the following: a physical random access configuration index, a physical random access configuration period, a preamble sequence format, message 1 time domain information, a number of frequency division random access opportunities of message 1, a message 1 frequency domain starting position, a preamble target received power, a physical random access power ramping step size, a maximum number of random access preamble transmissions, a time window length of a random access response, a message 1 subcarrier spacing, a message 3 transmission precoding enable identification, a number of preamble sequences for contention random access, a physical random access root sequence index, a contention resolution timer initial value, a message 3 transport block size threshold, a synchronization signal block selection reference signal received power threshold, an extended uplink synchronization signal block selection reference signal received power threshold, a total number of preamble sequences for user random access, a synchronization signal block and random access opportunity association and a number of contention based preamble sequences corresponding to each synchronization signal block, a restricted set configuration, a message 1 repetition transmission identification, a number of message 1 repetition transmissions, a sub-band full duplex configuration, a full duplex configuration, a random access opportunity, and an increased random access opportunity.

[0077] Message 1 is a message carrying a preamble sequence in a random access procedure, and message 3 is a message used to request to establish a connection in a random access procedure.

[0078] In some embodiments, the sending of message 3 and the sending of message 1 are quasi co located (QCL).

[0079] The random access configuration information can be distinguished by different values of parameters. For example, the different random access configuration information can refer to different preamble sequence formats in the random access configuration information, for example, one random access configuration information can be preamble sequence format A3, another random access configuration information can be preamble sequence format B4, and further, it can be a 6G newly defined preamble sequence format. The different random access configuration information can also refer to different message 1 frequency domain starting positions, for example, in different frequency domain ROs. The different random access configuration information can also refer to different message 1 time domain information, for example, in different time domain ROs. The different random access configuration information can also refer to different synchronization signal block and random access opportunity association relationships and the number of contention-based preamble sequences corresponding to each synchronization signal block. The different random access configuration information can also refer to different physical random access configuration indexes, for example, indicating different row indexes of Table 1, one random access configuration information indicates that the physical random access configuration index is 1, and another physical random access configuration indicates that the physical random access configuration index is 160. The different random access configuration information can also refer to different power control parameters (preamble target received power, physical random access power step size), for example, the preamble target received power of multiple random access configuration information is different. The random access configuration information can also be different in terms of repetition transmission configuration (message 1 repetition transmission identification, message 1 repetition transmission number), for example, one random access configuration information indicates that the random access configuration information is enabled and the message 1 repetition transmission number is 2, and another random access configuration information indicates that the random access configuration information is enabled and the message 1 repetition transmission number is 8. The random access configuration information can also be different in terms of message 3 configuration information, for example, the message 3 transport block size threshold is different. In addition, the random access configuration information can also be distinguished by different parameter combinations.

[0080] Taking the physical random access configuration index included in the random access configuration information as an example, the present disclosure can configure the correspondence between the physical random access configuration index and the preamble sequence format, time domain information, and other parameters through the physical random access configuration table. Exemplarily, the physical random access configuration table is shown in Table 1 below.

[0081] Table 1: Physical random access configuration table

[0082] n SFNmodx=y is used to define the system frame in which the preamble sequence is sent, x represents the RACH configuration period, and y represents the frame number. For example, when the PRACH configuration index is 0, the system frame in which the preamble sequence is sent is the first frame in every 16 frames, i.e., 1, 17, 33, and so on. The subframe number refers to the subframe in the system frame in which the preamble sequence is sent, the starting symbol refers to the starting symbol position in the subframe in which the preamble sequence is sent, and the number of PRACH slots in the subframe refers to the number of PRACH slots in the subframe in which the preamble sequence is sent. is used to represent the number of time domain positions in each PRACH slot, is used to represent the PRACH duration occupied by the preamble sequence. In the present disclosure, the physical random access configuration index can indicate multiple rows of information in the physical random access configuration table on the signaling structure, for example, the high-level parameter PRACH configuration index group, which is used to configure multiple physical random access configuration indexes. Exemplarily, the PRACH configuration index group {160, 199} indicates that the configuration information is the configuration information of the 161st row and the 200th row in the physical random access configuration table, which respectively configures the preamble sequence B4 and the preamble sequence C2, and the corresponding time domain resource information.

[0083] In step 502, the random access configuration information associated with the target synchronization signal block is acquired.

[0084] The random access configuration information can be indicated by a system information block (for example, SIB1). That is to say, the synchronization signal block can be associated with the system information block. The random access configuration information associated with the synchronization signal block is included in the system information block.

[0085] In an implementation manner, the first node determines the system information block associated with the target synchronization signal block, and acquires the random access configuration information associated with the target synchronization signal block from the system information block.

[0086] Exemplarily, after receiving the target synchronization signal block, the first node can acquire the MIB message in the PBCH in the target synchronization signal block, and the MIB message is used to indicate the control resource set and the search space (i.e., CORESET0) of the SIB1 associated with the target synchronization signal block. Then, the first node blindly detects the DCI of the PDCCH through the CORESET0, and the DCI is used to indicate the SIB1 in the PDSCH. After the first node acquires the indicated SIB1 through the DCI, the first node can acquire the random access configuration information associated with the target synchronization signal block from the SIB1.

[0087] Different SSBs can correspond to different SIB1s (for example, SIB1-1, SIB1-2, and the like), and in turn correspond to different random access configuration information. The synchronization signal block and the system information block can be a one-to-one correspondence, or a many-to-one correspondence, or a one-to-many correspondence, or a combination of one-to-one, many-to-one, and one-to-many.

[0088] For example, as shown in FIG. 6, one synchronization signal block can correspond to one system information block, for example, SSB1 corresponds to SIB1-1, SSB2 corresponds to SIB1-2, and the like. As shown in FIG. 7, multiple synchronization signal blocks can correspond to one system information block, for example, SSB1 corresponds to SIB1-1, SSB2 corresponds to SIB1-1, SSB3 corresponds to SIB1-2, and the like.

[0089] In some embodiments, for the case where multiple synchronization signal blocks correspond to one system information block, other synchronization signal blocks (for example, SSB2 in FIG. 7) other than the first synchronization signal block (for example, SSB1 in FIG. 7) can be implemented in an on-demand manner, and the corresponding system information block (for example, SIB1-1 in FIG. 7) can also be implemented in an on-demand manner, that is, the second node triggers the transmission of SSB2 or SIB1-1 in response to the wake-up signal (WUS) of the first node.

[0090] In some embodiments, the SSB can be a 5G / 6G system shared SSB, or contain part of a 5G / 6G system shared SSB.

[0091] In summary, the present disclosure can indicate different random access configuration information through the synchronization signal block, for example, the preamble sequence format B1 is suitable for nodes with good communication quality, and the preamble sequence format B4 is suitable for nodes with poor communication quality. In the present disclosure, the second node can indicate that the center node performs random access through the preamble sequence format B1 through the synchronization signal block, thereby improving the access speed, and indicate that the edge node performs random access through the preamble sequence format B4, so as to guarantee the access success rate.

[0092] In step 503, random access is performed based on the random access configuration information associated with the target synchronization signal block.

[0093] It should be noted that the above technical solutions can be applied to normal carriers, supplementary uplink (SUL), or uplink-only carriers.

[0094] In the technical solution provided in the present disclosure, the first node can receive a target synchronization signal block in the at least one synchronization signal block, thereby obtaining the random access configuration information associated with the target synchronization signal block, and then the first node can perform random access based on the random access configuration information associated with the target synchronization signal block. The at least one synchronization signal block is associated with a plurality of random access configuration information. In this way, the present disclosure establishes the association between the synchronization signal block and the random access configuration information, thereby realizing the configuration of multiple sets of random access configuration information in the network, so that the first node in the network can perform random access through different random access configuration information to meet the different communication needs of the first node, thereby improving the access effect of the first node performing random access.

[0095] It should be noted that the random access configuration information associated with the target synchronization signal block can be 1 or m. m is a positive integer greater than or equal to 2. For the case where the random access configuration information is 1, the first node can directly perform random access based on the random access configuration information. For the case where the random access configuration information is m, the first node can further select one random access configuration information from the m random access configuration information for random access.

[0096] As an embodiment of the present disclosure, in combination with the embodiment shown in FIG. 5, as shown in FIG. 8, the target synchronization signal block is associated with m random access configuration information in the plurality of random access configuration information, and m is a positive integer greater than or equal to 2. The step 503 can be implemented by the following steps 801 and 802.

[0097] In step 801, a first random access configuration information is selected from the m random access configuration information.

[0098] Exemplarily, different random access configuration information is suitable for the first node with different communication quality, and the first node can select the first random access configuration information from the m random access configuration information according to the communication quality.

[0099] In an implementation manner, the first node takes the random access configuration information corresponding to the measurement quality interval in which the current communication measurement quality is located as the first random access configuration information.

[0100] The m random access configuration information respectively corresponds to a plurality of measurement quality intervals.

[0101] Exemplarily, the communication quality of the node can be represented by RSRP. The communication measurement quality can be a measurement value of RSRP of the first node, and the measurement quality interval can be divided by an RSRP threshold value. The first node selects the random access configuration information corresponding to the measurement quality interval as the first random access configuration information by determining the RSRP measurement value of the downlink (DL) signal (SSB or CSI-RS).

[0102] As shown in FIG. 9, the threshold A divides the communication measurement quality into two intervals, the random access configuration information 1 corresponds to the interval with the communication measurement quality greater than or equal to the threshold A, and the random access configuration information 2 corresponds to the interval with the communication measurement quality less than the threshold A. In the case that the current communication measurement quality is greater than or equal to the threshold A, the first node takes the random access configuration information 1 as the first random access configuration information. In the case that the current communication measurement quality is less than the threshold A, the first node takes the random access configuration information 2 as the first random access configuration information. For example, the short format preamble sequence format A3 is configured in the random access configuration information 1, and the short format preamble sequence format B4 is configured in the random access configuration information 2, so that in the case of good channel conditions, the first node can select the preamble sequence format A3 for random access, and in the case of poor channel conditions, the first node can select the preamble sequence format B4 for random access.

[0103] Exemplarily, the random access configuration information can be the configuration information of 4-step RACH or the configuration information of 2-step RACH, and the present disclosure can also divide the communication measurement quality into multiple intervals by multiple threshold values.

[0104] As shown in FIG. 10, the present disclosure can divide the communication measurement quality into three intervals by the threshold 1 and the threshold 2, and the threshold 1 is greater than the threshold 2. In the case that the current communication measurement quality is greater than or equal to the threshold 1, it indicates that the current channel condition is good, and the first node can take the random access configuration information 3 as the first random access configuration information. The random access configuration information 3 is used to instruct the first node to perform 2-step RACH by the preamble sequence format A2 to improve the access speed. In the case that the current communication measurement quality is less than the threshold 1 and greater than or equal to the threshold 2, it indicates that the current channel condition is medium, and the first node can take the random access configuration information 4 as the first random access configuration information. The random access configuration information 4 is used to instruct the first node to perform 2-step RACH by the preamble sequence format B4. In the case that the current communication measurement quality is less than the threshold 2, it indicates that the current channel condition is poor, and the first node can take the random access configuration information 5 as the first random access configuration information. The random access configuration information 5 is used to instruct the first node to perform 4-step RACH by the preamble sequence format B4 to guarantee the access success rate.

[0105] As shown in FIG. 11, the present disclosure can divide the communication measurement quality into four intervals by threshold 1 and threshold 2, and threshold 3, threshold 1 is greater than threshold 2, threshold 2 is greater than threshold 3. In the case that the current communication measurement quality is greater than or equal to threshold 1, it represents that the current channel condition is good, and the first node can take the random access configuration information 6 as the first random access configuration information. The random access configuration information 6 is used to instruct the first node to perform 2-step RACH through preamble sequence format A2, so as to improve the access speed. In the case that the current communication measurement quality is less than threshold 1 and greater than or equal to threshold 2, it represents that the current channel condition is medium, and the first node can take the random access configuration information 7 as the first random access configuration information. The random access configuration information 7 is used to instruct the first node to perform 4-step RACH through preamble sequence format A2. In the case that the current communication measurement quality is less than threshold 2 and greater than or equal to threshold 3, the first node can take the random access configuration information 8 as the first random access configuration information. The random access configuration information 8 is used to instruct the first node to perform 2-step RACH through preamble sequence format B4. In the case that the current communication measurement quality is less than threshold 3, the first node can take the random access configuration information 9 as the first random access configuration information. The random access configuration information 9 is used to instruct the first node to perform 4-step RACH through preamble sequence format B4.

[0106] It should be noted that the measurement quality interval in the present disclosure can correspond to one or more random access configuration information. As shown in FIG. 12, the present disclosure can divide the communication measurement quality into three intervals by threshold 1 and threshold 2. The random access configuration information 10 corresponds to the interval greater than or equal to threshold 1, the random access configuration information 11 and the random access configuration information 12 correspond to the interval less than threshold 1 and greater than or equal to threshold 2, and the random access configuration information 13 corresponds to the interval less than threshold 2. The random access configuration information 10 is used to instruct the first node to perform 2-step RACH through preamble sequence format A2, the random access configuration information 11 is used to instruct the first node to perform 4-step RACH through preamble sequence format A2, the random access configuration information 12 is used to instruct the first node to perform 2-step RACH through preamble sequence format B4, and the random access configuration information 13 is used to instruct the first node to perform 4-step RACH through preamble sequence format B4. For the case that the measurement quality interval corresponds to multiple random access configuration information, the first node can further select one random access configuration information from the multiple random access configuration information corresponding to the measurement quality interval as the first random access configuration information. For example, the first node can select the first random access configuration information by the priority of the configuration information, the random access mode supported by the device, etc.

[0107] In step 802, random access is performed based on the first random access configuration information.

[0108] In the technical solutions provided in the present disclosure, in the case that the target synchronization information block is associated with multiple random access configuration information, the first node can select appropriate random access configuration information for random access, for example, selecting corresponding random access configuration information based on the communication quality. In this way, the first node can further select random access configuration information that is more suitable for the first node, thereby improving the random access effect.

[0109] In addition, in the case that the random access of the first node fails, the first node can also change the random access configuration information to perform message retransmission. As an embodiment of the present disclosure, in combination with the embodiment shown in FIG. 5, as shown in FIG. 8, the random access method further includes the following steps 803 and step 804.

[0110] In step 803, in the case that the random access based on the first random access configuration information fails, the second random access configuration information is selected from the m random access configuration information.

[0111] The second random access configuration information can be random access configuration information other than the first random access configuration information in the m random access configuration information, that is, the first random access configuration information is different from the second random access configuration information.

[0112] Taking 4-step RACH as an example, after the first node sends the Msg1 message through the first random access configuration information, a Msg2 message waiting window is started, and the first node receives the Msg2 message responded by the second node through the Msg2 message waiting window. If the first node does not receive the Msg2 message in the Msg2 message waiting window, it means that the random access of the first node based on the first random access configuration information fails, and therefore, the first node can perform random access again through the repetition mode.

[0113] The first node can increase the transmission power and switch the transmission beam when retransmitting, thereby increasing the retransmission success rate. In addition, the first node can also switch the random access configuration information, that is, select the second random access configuration information from the m random access configuration information.

[0114] In step 804, random access is performed based on the second random access configuration information.

[0115] For example, the m random access configuration information includes random access configuration information 1 and random access configuration information 2. The random access configuration information 1 is used to indicate a preamble sequence format B4, which occupies a length of nearly 12 symbols. The random access configuration information 2 is used to indicate a preamble sequence format C2, which occupies a length of nearly 5 symbols. Exemplarily, the first node uses the preamble sequence format C2 to transmit at the initial transmission, and the first node can fall back to B4 to perform random access at the retransmission.

[0116] It should be noted that the first node can keep the transmission power unchanged or keep the transmission beam unchanged when switching the random access configuration information to perform random access. The first node can also switch the transmission beam when switching the random access configuration information, for example, in the case where different random access configuration information is associated with different synchronization signal blocks. In addition, the first node can also increase the transmission power to perform retransmission when switching the random access configuration information.

[0117] In the above technical solution, the first node can select other random access configuration information from the m random access configuration information in the case where the random access based on the first random access configuration information fails, thereby improving the success rate of random access.

[0118] In addition, in the case where the first node is configured with multiple random access configuration information, one of the multiple random access configuration information can be a default configuration, and the default configuration is used for retransmission. For example, the first random access configuration information is the default configuration, and the first node can perform retransmission through the first random access configuration information.

[0119] In addition, the above method can be applied to a normal carrier, a supplementary uplink (SUL), or an uplink-only carrier.

[0120] In addition, the random access opportunity is a transmission resource for the first node to transmit a preamble sequence in a random access process. In the present disclosure, more random access opportunities can be allocated to the first node with poor communication quality, thereby improving the success rate of random access, and fewer random access opportunities can be allocated to the first node with good communication quality, thereby improving resource utilization.

[0121] In some embodiments, the synchronization signal block and the random access opportunity have an association relationship. The number of random access opportunities associated with different synchronization signal blocks is the same or different.

[0122] It should be noted that different synchronization signal blocks in the present disclosure can be associated with different random access configuration information, and therefore the present disclosure can further configure the association relationship between the synchronization signal blocks and the random access opportunities.

[0123] Exemplarily, the synchronization signal blocks and the random access opportunities can be non-uniformly associated, i.e., different synchronization signal blocks can correspond to different random access opportunities. As shown in FIG. 13, the synchronization signal blocks include SSB1, SSB2 and SSB3, and the random access opportunities include RO1, RO2, RO3 and RO4. SSB1 is associated with RO1, RO2, RO3 and RO4, SSB2 is associated with RO1 and RO3, and SSB3 is associated with RO4.

[0124] In addition, the mapping order of the synchronization signal blocks and the random access opportunities can be ascending or descending, and the association manner of different synchronization signal blocks and random access opportunities can be different. As shown in FIG. 14, the synchronization signal blocks include SSB1, SSB2, SSB3 and SSB4. In a first association manner, the RACH frequency domain resource is 4, SSB1 is associated with 4 ROs in time domain position 1, SSB2 is associated with 2 ROs in time domain position 2, and SSB3 and SSB4 are respectively associated with 1 RO in time domain position 2. In a second association manner, the RACH frequency domain resource is 4, SSB1 is associated with 1 RO in time domain position 2, SSB2 is associated with 2 ROs in time domain position 2, SSB3 is associated with 1 RO in time domain position 2, and SSB4 is associated with 4 ROs in time domain position 1. In a third association manner, the RACH frequency domain resource is 2, SSB1 is associated with 1 RO in time domain position 1, SSB2 is associated with 1 RO in time domain position 1, SSB3 and SSB4 are simultaneously associated with 2 ROs in time domain position 2.

[0125] In some embodiments, the synchronization signal block can also be associated with a random access opportunity through random access configuration information. For example, a subset of SSBs is configured to be associated with ROs through random access configuration information. For example, as shown in FIG. 15, the first set of random access configuration information corresponds to SSB1 and SSB2, i.e., SSB1 and SSB2 are associated with the first set of random access configuration information as a subset, SSB1 can be associated with RO1 and RO2 in time slot n indicated by the first set of random access configuration information, and SSB2 can be associated with RO3 and RO4 in time slot n+1 indicated by the first set of random access configuration information. The second set of random access configuration information corresponds to SSB3 and SSB4, i.e., SSB3 and SSB4 are associated with the second set of random access configuration information as a subset, SSB3 can be associated with RO1 and RO2 in time slot n and RO1 and RO2 in time slot n+1 indicated by the second set of random access configuration information, and SSB4 can be associated with RO3 in time slot n and RO3 in time slot n+1 indicated by the second set of random access configuration information. In this way, the present disclosure can not need to directly associate SSBs with ROs, but can achieve the association relationship between SSBs and corresponding ROs by configuring available RACH resources in random access configuration information.

[0126] In summary, the association mapping of the synchronization signal block and the random access opportunity includes at least one of the following: part of the synchronization signal block is associated with all random access opportunities; part of the synchronization signal block is associated with part of the random access opportunity; different synchronization signal blocks have different association manners with the random access opportunity; the synchronization signal block is not directly associated with the random access opportunity, but the available RACH resources configured by the random access configuration information are configured.

[0127] In some embodiments, a plurality of synchronization signal blocks can be associated with the same random access opportunity, and the plurality of synchronization signal blocks associated with the same random access opportunity have non-intersecting random access preamble sequence ranges.

[0128] It should be noted that when a plurality of synchronization signal blocks can be associated with the same random access opportunity, different first nodes can send the same preamble sequence based on the same random access opportunity when performing random access, which leads to the second node being unable to accurately identify the first node, thereby leading to random access failure. Therefore, in the present disclosure, the plurality of synchronization signal blocks associated with the same random access opportunity can be associated with different preamble sequence ranges on the random access opportunity, so as to ensure that the first node uses different preamble sequences when reporting through the RO associated with different SSBs.

[0129] Exemplarily, the random access preamble sequence range in the random access configuration information associated with the plurality of synchronization signal blocks can be uniformly grouped or non-uniformly grouped. That is, the number of sequences in the preamble sequence range allocated by the plurality of synchronization signal blocks can be the same or different. For example, SSB1 and SSB2 are associated with the same RO, the random access preamble sequence range corresponding to SSB1 is 0-9, and the random access preamble sequence range corresponding to SSB2 is 10-30.

[0130] In some embodiments, the random access preamble sequence range in the random access configuration information associated with the plurality of synchronization signal blocks is determined by the number of the plurality of synchronization signal blocks.

[0131] Exemplarily, SSB1 is associated with RO1, SSB2 is associated with RO2 and RO3, SSB3 and SSB4 are jointly associated with RO4, the random access preamble sequence range of SSB1 on RO1 can be all the preamble sequences, the random access preamble sequence range of SSB2 on RO2 and RO3 can be all the preamble sequences, and the random access preamble sequence range of SSB3 and SSB4 on RO4 can be half of the preamble sequences, respectively.

[0132] In some embodiments, the random access configuration information is used to indicate a valid random access opportunity. In the case where the plurality of random access opportunities indicated by different random access configuration information have overlapping transmission resources, the random access opportunity with the highest priority among the plurality of random access opportunities is the valid random access opportunity.

[0133] In the case where the plurality of random access opportunities indicated by different random access configuration information do not have overlapping transmission resources, the plurality of random access opportunities are all valid random access opportunities.

[0134] Exemplarily, as shown in FIG. 15, the preamble sequence format configured by the first set of random access configuration information can be B4, occupying a length of nearly 12 symbols. The preamble sequence format of the second set of random access configuration information can be B1 or A1, occupying a length of nearly 2 symbols. The RO1 and RO2 corresponding to the first set of random access configuration information and the RO1 and RO2 corresponding to the second set of random access configuration information have overlapping transmission resources (FIG. 15 illustrates this in the time-frequency domain); the RO1 and RO2 corresponding to the first set of random access configuration information and the RO3 corresponding to the second set of random access configuration information coexist in the time-frequency domain, that is, there is no overlapping transmission resource.

[0135] For example, UE1 performs random access through the first set of random access configuration information, and UE2 performs random access through the second set of random access configuration information. If UE2 uses RO1 or RO2 corresponding to the second set of random access configuration information, signal interference with UE1 will occur. Therefore, in the present disclosure, the effectiveness of the random access opportunity can be set by predefining or configuring the priority of the random access opportunity in different random access configuration information. For example, the priority of the random access opportunity corresponding to the first set of random access configuration information is higher than the priority of the random access opportunity corresponding to the second set of random access configuration information. At this time, RO1 and RO2 in the first set of random access configuration information are valid ROs, RO1 and RO2 in the second set of random access configuration information are invalid ROs, and RO3 is a valid RO. SSB3 and / or SSB4 can be mapped on RO3, thereby avoiding signal interference between different nodes.

[0136] In some embodiments, when one synchronization signal block corresponds to multiple sets of random access configuration information, the random access opportunities corresponding to the multiple sets of random access configuration information can be associated and mapped as a group of random access opportunities.

[0137] Exemplarily, as shown in FIG. 16, one synchronization signal block corresponds to the first set of random access configuration information and the second set of random access configuration information in FIG. 15. RO1 and RO2 on time slot n corresponding to the first set of random access configuration information can be associated and mapped as RO1 and RO2, RO3 on time slot n corresponding to the second set of random access configuration information can be associated and mapped as RO3, RO1 and RO2 on time slot n+1 corresponding to the first set of random access configuration information can be associated and mapped as RO4 and RO5, and so on.

[0138] FIG. 17 is a flowchart of a random access method according to an embodiment of the present disclosure. As shown in FIG. 17, the random access method includes the following step 1701.

[0139] In step 1701, a target synchronization signal block in at least one synchronization signal block is transmitted.

[0140] The at least one synchronization signal block is associated with multiple sets of random access configuration information.

[0141] In some embodiments, the at least one synchronization signal block is associated with the plurality of random access configuration information, including at least one of: one of the at least one synchronization signal block is associated with one of the plurality of random access configuration information; one of the at least one synchronization signal block is associated with k of the plurality of random access configuration information; n of the at least one synchronization signal block is associated with one of the plurality of random access configuration information; n of the at least one synchronization signal block is associated with k of the plurality of random access configuration information. n, k are positive integers greater than or equal to 2.

[0142] In some embodiments, the synchronization signal block is associated with a system information block; the random access configuration information associated with the synchronization signal block is included in the system information block.

[0143] In some embodiments, the synchronization signal block is associated with a random access opportunity.

[0144] In some embodiments, the number of random access opportunities associated with different synchronization signal blocks is the same or different.

[0145] In some embodiments, a plurality of synchronization signal blocks are associated with a same random access opportunity, and the random access preamble sequence ranges associated with the plurality of synchronization signal blocks on the random access opportunity are disjoint.

[0146] In some embodiments, the random access preamble sequence range in the random access configuration information associated with the plurality of synchronization signal blocks is determined by the number of the plurality of synchronization signal blocks.

[0147] In some embodiments, the random access configuration information is used to indicate a valid random access opportunity; in the case where the plurality of random access opportunities indicated by different random access configuration information have overlapping transmission resources, the random access opportunity with the highest priority among the plurality of random access opportunities is the valid random access opportunity.

[0148] In some embodiments, in the case where the plurality of random access opportunities indicated by different random access configuration information do not have overlapping transmission resources, the plurality of random access opportunities are all valid random access opportunities.

[0149] In some embodiments, the random access configuration information comprises at least one of: a physical random access configuration index, a physical random access configuration period, a preamble sequence format, message 1 time domain information, a number of frequency division random access opportunities for message 1, a message 1 frequency domain starting position, a preamble target received power, a physical random access power ramping step size, a random access preamble maximum transmission number, a time window length of a random access response, a message 1 subcarrier spacing, a message 3 transmission precoding enable identification, a number of preamble sequences for contention random access, a physical random access root sequence index, a contention resolution timer initial value, a message 3 transport block size threshold, a synchronization signal block selection reference signal received power threshold, an extended uplink synchronization signal block selection reference signal received power threshold, a total number of preamble sequences for user random access, a synchronization signal block and random access opportunity association and a number of contention based preamble sequences corresponding to each synchronization signal block, a restricted set configuration, a message 1 repetition transmission identification, a message 1 repetition transmission number, a sub-band full duplex configuration, a full duplex configuration, a random access opportunity, and an increased random access opportunity. The message 1 is a message carrying a preamble sequence in a random access process, and the message 3 is a message used for requesting to establish a connection in the random access process.

[0150] In some embodiments, the sending of the message 3 is quasi co location (QCL) with the sending of the message 1.

[0151] The related descriptions can refer to the descriptions in the above technical solutions, which will not be repeated here.

[0152] It can be understood that, in order to implement the above functions, the communication device comprises a hardware structure and / or a software module corresponding to each function. Those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiments of the present disclosure, the present disclosure can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is driven by hardware or computer software, it depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present disclosure.

[0153] The embodiments of the present disclosure can divide the function modules of the communication device according to the above method embodiments. For example, each function module can be divided according to each function, or two or more functions can be integrated into one function module. The integrated module can be realized in the form of hardware or software. It should be noted that the division of modules in the embodiments of the present disclosure is illustrative, and is only a logical function division. When actually implemented, there can be another division manner. The following will be described taking the example of dividing each function module according to each function.

[0154] For example, taking the communication apparatus as the first node in the method embodiments, FIG. 18 is a structural schematic diagram of a first node according to an embodiment of the present disclosure, which can execute the random access method provided by the method embodiments. As shown in FIG. 18, the first node 180 includes a processing unit 1801 and a communication unit 1802.

[0155] The communication unit 1802 is configured to receive a target synchronization signal block in at least one synchronization signal block. The at least one synchronization signal block is associated with a plurality of random access configuration information.

[0156] The communication unit 1802 is further configured to acquire the random access configuration information associated with the target synchronization signal block.

[0157] The processing unit 1801 is configured to perform random access based on the random access configuration information associated with the target synchronization signal block.

[0158] In some embodiments, the at least one synchronization signal block is associated with the plurality of random access configuration information, including at least one of: one synchronization signal block in the at least one synchronization signal block is associated with one random access configuration information in the plurality of random access configuration information; one synchronization signal block in the at least one synchronization signal block is associated with k random access configuration information in the plurality of random access configuration information; n synchronization signal blocks in the at least one synchronization signal block are associated with one random access configuration information in the plurality of random access configuration information; n synchronization signal blocks in the at least one synchronization signal block are associated with k random access configuration information in the plurality of random access configuration information; n and k are positive integers greater than or equal to 2.

[0159] In some embodiments, the processing unit 1801 is configured to determine a system information block associated with the target synchronization signal block; and the communication unit 1802 is configured to acquire the random access configuration information associated with the target synchronization signal block from the system information block.

[0160] In some embodiments, the target synchronization signal block is associated with m random access configuration information in the plurality of random access configuration information; m is a positive integer greater than or equal to 2. The processing unit 1801 is configured to select a first random access configuration information from the m random access configuration information, and perform random access based on the first random access configuration information.

[0161] In some embodiments, the m random access configuration information respectively corresponds to a plurality of measurement quality intervals; and the processing unit 1801 is configured to take the random access configuration information corresponding to the measurement quality interval where the current communication measurement quality is located as the first random access configuration information.

[0162] In some embodiments, the processing unit 1801 is further configured to, in a case that the random access based on the first random access configuration information fails, select second random access configuration information from the m random access configuration information, and perform random access based on the second random access configuration information.

[0163] In some embodiments, the synchronization signal block is associated with a random access opportunity.

[0164] In some embodiments, the number of random access opportunities associated with different synchronization signal blocks is the same or different.

[0165] In some embodiments, a plurality of synchronization signal blocks are associated with a same random access opportunity, and the random access preamble sequence ranges associated with the plurality of synchronization signal blocks on the random access opportunity are disjoint.

[0166] In some embodiments, the random access preamble sequence range in the random access configuration information associated with the plurality of synchronization signal blocks is determined by the number of the plurality of synchronization signal blocks.

[0167] In some embodiments, the random access configuration information is used to indicate a valid random access opportunity; in a case that a plurality of random access opportunities indicated by different random access configuration information have overlapping transmission resources, the random access opportunity with the highest priority among the plurality of random access opportunities is the valid random access opportunity.

[0168] In some embodiments, in a case that a plurality of random access opportunities indicated by different random access configuration information do not have overlapping transmission resources, the plurality of random access opportunities are all valid random access opportunities.

[0169] In some embodiments, the random access configuration information comprises at least one of: a physical random access configuration index, a physical random access configuration period, a preamble sequence format, message 1 time domain information, a number of frequency division random access opportunities for message 1, a message 1 frequency domain starting position, a preamble target received power, a physical random access power ramping step size, a random access preamble maximum transmission number, a time window length of a random access response, a message 1 subcarrier spacing, a message 3 transmission precoding enable identification, a number of preamble sequences for contention random access, a physical random access root sequence index, a contention resolution timer initial value, a message 3 transmission block size threshold, a synchronization signal block selection reference signal received power threshold, an extended uplink synchronization signal block selection reference signal received power threshold, a total number of preamble sequences for user random access, a synchronization signal block and random access opportunity association and a number of contention based preamble sequences corresponding to each synchronization signal block, a restricted set configuration, a message 1 repetition transmission identification, a message 1 repetition transmission number, a sub-band full duplex configuration, a full duplex configuration, a random access opportunity, an increased random access opportunity. The message 1 is a message carrying a preamble sequence in a random access process, and the message 3 is a message used for requesting to establish a connection in a random access process.

[0170] For example, taking the communication apparatus as the second node in the above-mentioned method embodiment, FIG. 19 is a structural schematic diagram of a second node according to an embodiment of the present disclosure, which can execute the random access method provided by the above-mentioned method embodiment. As shown in FIG. 19, the second node 190 includes a communication unit 1901.

[0171] The communication unit 1901 is configured to transmit a target synchronization signal block in at least one synchronization signal block. The at least one synchronization signal block is associated with a plurality of random access configuration information.

[0172] In some embodiments, the at least one synchronization signal block is associated with the plurality of random access configuration information, comprising at least one of: one synchronization signal block in the at least one synchronization signal block is associated with one random access configuration information in the plurality of random access configuration information; one synchronization signal block in the at least one synchronization signal block is associated with k random access configuration information in the plurality of random access configuration information; n synchronization signal blocks in the at least one synchronization signal block are associated with one random access configuration information in the plurality of random access configuration information; n synchronization signal blocks in the at least one synchronization signal block are associated with k random access configuration information in the plurality of random access configuration information. n and k are positive integers greater than or equal to 2.

[0173] In some embodiments, the synchronization signal block is associated with a system information block; the system information block comprises the random access configuration information associated with the synchronization signal block.

[0174] In some embodiments, the synchronization signal block is associated with a random access occasion.

[0175] In some embodiments, the number of random access occasions associated with different synchronization signal blocks is the same or different.

[0176] In some embodiments, a plurality of synchronization signal blocks are associated with a same random access occasion, and the random access preamble sequence ranges associated with the plurality of synchronization signal blocks on the random access occasion are disjoint.

[0177] In some embodiments, the random access preamble sequence ranges in the random access configuration information associated with the plurality of synchronization signal blocks are determined by the number of the plurality of synchronization signal blocks.

[0178] In some embodiments, the random access configuration information is used to indicate a valid random access occasion; in a case where a plurality of random access occasions indicated by different random access configuration information have overlapping transmission resources, the random access occasion with the highest priority among the plurality of random access occasions is the valid random access occasion.

[0179] In some embodiments, in a case where a plurality of random access occasions indicated by different random access configuration information do not have overlapping transmission resources, all of the plurality of random access occasions are valid random access occasions.

[0180] In some embodiments, the random access configuration information includes at least one of the following: a physical random access configuration index, a physical random access configuration period, a preamble sequence format, message 1 time domain information, a number of frequency division random access occasions for message 1, a message 1 frequency domain starting position, a preamble target received power, a physical random access power ramping step size, a maximum number of random access preamble transmissions, a time window length of a random access response, a message 1 subcarrier spacing, a message 3 transmission precoding enable identifier, a number of preamble sequences for contention-based random access, a physical random access root sequence index, a contention resolution timer initial value, a message 3 transmission block size threshold, a synchronization signal block selection reference signal received power threshold, an extended uplink synchronization signal block selection reference signal received power threshold, a total number of preamble sequences for user random access, a synchronization signal block-random access occasion association relationship and a number of contention-based preamble sequences corresponding to each synchronization signal block, a restricted set configuration, a message 1 repeated transmission identifier, a number of message 1 repeated transmissions, a sub-band full duplex configuration, a full duplex configuration, a random access occasion, an increased random access occasion. Message 1 is a message carrying a preamble sequence in a random access process, and message 3 is a message used to request connection establishment in a random access process.

[0181] In the case of implementing the functions of the above-mentioned integrated modules in the form of hardware, the embodiments of the present disclosure provide another structure of the communication apparatus involved in the above-mentioned embodiments. As shown in FIG. 20, the communication apparatus 200 includes a processor 2002 and a bus 2004. In some embodiments, the communication apparatus 200 can further include a memory 2001. In some embodiments, the communication apparatus 200 can further include a communication interface 2003.

[0182] The processor 2002 can be various exemplary logical blocks, modules and circuits described in combination with the embodiments of the present disclosure. The processor 2002 can be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, transistor logic device, hardware component or any combination thereof, which can implement or execute various exemplary logical blocks, modules and circuits described in combination with the embodiments of the present disclosure. The processor 2002 can also be a combination of computing functions, such as a combination of one or more microprocessors, a combination of a DSP (digital signal processor) and a microprocessor, etc.

[0183] The communication interface 2003 is used to connect with other devices through a communication network. The communication network can be an Ethernet, a wireless access network, a WLAN (wireless local area network) and the like.

[0184] The memory 2001 can be a ROM (read-only memory) or other type of static storage device that can store static information and instructions, a RAM (random access memory) or other type of dynamic storage device that can store information and instructions, an EEPROM (electrically erasable programmable read-only memory), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.

[0185] As an implementation manner, the memory 2001 can exist independently of the processor 2002, and the memory 2001 can be connected with the processor 2002 through the bus 2004, for storing instructions or program codes. When the processor 2002 invokes and executes the instructions or program codes stored in the memory 2001, the method described in any of the embodiments of the present disclosure can be implemented.

[0186] In another implementation manner, the memory 2001 can also be integrated with the processor 2002.

[0187] The bus 2004 can be an extended industry standard architecture (EISA) bus, etc. The bus 2004 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in FIG. 20, but it does not mean that there is only one bus or only one type of bus.

[0188] Some embodiments of the present disclosure provide a computer readable storage medium (for example, a non-transitory computer readable storage medium) having computer program instructions stored therein, which, when executed on a computer, cause the computer to perform the method described in any of the above embodiments.

[0189] Exemplarily, the above computer readable storage medium can include, but is not limited to, a magnetic storage device (for example, a hard disk, a floppy disk or a magnetic tape, etc.), an optical disc (for example, a compact disc (CD), a digital versatile disc (DVD), etc.), a smart card and a flash memory device (for example, an erasable programmable read-only memory (EPROM), a card, a stick or a key drive, etc.). The various computer readable storage media described in the present disclosure can represent one or more devices and / or other machine readable storage media for storing information. The term "machine readable storage medium" can include, but is not limited to, a wireless channel and various other media capable of storing, containing and / or carrying instructions and / or data.

[0190] The embodiments of the present disclosure provide a computer program product containing instructions, which, when executed on a computer, cause the computer to perform the method described in any of the above embodiments.

[0191] In the embodiments of the present disclosure, the first node can receive a target synchronization signal block in at least one synchronization signal block, so as to obtain random access configuration information associated with the target synchronization signal block, and then the first node can perform random access based on the random access configuration information associated with the target synchronization signal block. The at least one synchronization signal block is associated with a plurality of random access configuration information. In this way, the present disclosure establishes the association relationship between the synchronization signal block and the random access configuration information, thereby realizing the configuration of multiple sets of random access configuration information in the network, so that the first node in the network can perform random access through different random access configuration information, so as to meet the different communication requirements of the first node, thereby improving the access effect of the first node performing random access.

[0192] The above merely provides the specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, any change or replacement within the technical scope disclosed by the present disclosure should be covered in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A random access method, comprising: receiving a target synchronization signal block in at least one synchronization signal block; the at least one synchronization signal block is associated with a plurality of random access configuration information; obtaining random access configuration information associated with the target synchronization signal block; performing random access based on the random access configuration information associated with the target synchronization signal block.

2. The method of claim 1, wherein, The at least one synchronization signal block is associated with the plurality of random access configuration information, including at least one of the following: one synchronization signal block in the at least one synchronization signal block is associated with one random access configuration information in the plurality of random access configuration information; one synchronization signal block in the at least one synchronization signal block is associated with k random access configuration information in the plurality of random access configuration information; n synchronization signal blocks in the at least one synchronization signal block are associated with one random access configuration information in the plurality of random access configuration information; n synchronization signal blocks in the at least one synchronization signal block are associated with k random access configuration information in the plurality of random access configuration information; wherein n and k are positive integers greater than or equal to 2.

3. The method of claim 1, wherein, The obtaining of the random access configuration information associated with the target synchronization signal block comprises: determining a system information block associated with the target synchronization signal block; obtaining the random access configuration information associated with the target synchronization signal block from the system information block.

4. The method of claim 1, wherein, The target synchronization signal block is associated with m random access configuration information in the plurality of random access configuration information; m is a positive integer greater than or equal to 2; The performing of random access based on the random access configuration information associated with the target synchronization signal block comprises: selecting a first random access configuration information from the m random access configuration information; performing random access based on the first random access configuration information.

5. The method of claim 4, wherein, The m random access configuration information respectively corresponds to a plurality of measurement quality intervals; The selecting of the first random access configuration information from the m random access configuration information comprises: taking the random access configuration information corresponding to the measurement quality interval where the current communication measurement quality is located as the first random access configuration information. 6.The method of claim 4, further comprising: in the case that random access based on the first random access configuration information fails, selecting a second random access configuration information from the m random access configuration information, the second random access configuration information being a random access configuration information other than the first random access configuration information in the m random access configuration information; performing random access based on the second random access configuration information.

7. The method of claim 1, wherein, Each synchronization signal block in the at least one synchronization signal block has an association relationship with a random access opportunity.

8. The method of claim 7, wherein, The number of random access opportunities associated with different synchronization signal blocks is the same or different.

9. The method of claim 7, wherein, A plurality of synchronization signal blocks are associated with a same random access opportunity, and the random access preamble sequence ranges associated with the plurality of synchronization signal blocks on the random access opportunity are disjoint.

10. The method of claim 9, wherein, The random access preamble sequence range in the random access configuration information associated with the plurality of synchronization signal blocks is determined by the number of the plurality of synchronization signal blocks.

11. The method of claim 1, wherein, Each of the plurality of random access configuration information is used to indicate a valid random access opportunity; in case that multiple random access opportunities indicated by different random access configuration information exist transmission resource overlap, the random access opportunity with the highest priority among the multiple random access opportunities is the valid random access opportunity.

12. The method of claim 11, wherein, In case that multiple random access opportunities indicated by different random access configuration information do not exist transmission resource overlap, the multiple random access opportunities are all valid random access opportunities.

13. The method of claim 1, wherein, Each of the plurality of random access configuration information comprises at least one of: Physical random access configuration index, physical random access configuration period, preamble sequence format, message 1 time domain information, number of frequency division random access opportunities of message 1, message 1 frequency domain starting position, preamble target received power, physical random access power step size, random access preamble maximum transmission times, random access response time window length, message 1 subcarrier spacing, message 3 transmission precoding enable identification, preamble sequence number for contention random access, physical random access root sequence index, contention resolution timer initial value, message 3 transport block size threshold, synchronization signal block selection reference signal received power threshold, extended uplink synchronization signal block selection reference signal received power threshold, total number of preamble sequences for user random access, synchronization signal block and random access opportunity association relationship and the number of contention-based preamble sequences corresponding to each synchronization signal block, restricted set configuration, message 1 repeated transmission identification, message 1 repeated transmission times, sub-band full duplex configuration, full duplex configuration, random access opportunity, increased random access opportunity; wherein the message 1 is a message carrying a preamble sequence in a random access process, and the message 3 is a message used to request connection establishment in the random access process.

14. A random access method, comprising: sending a target synchronization signal block in at least one synchronization signal block; The at least one synchronization signal block is associated with a plurality of random access configuration information.

15. The method of claim 14, wherein, The at least one synchronization signal block is associated with the plurality of random access configuration information, comprising at least one of: One synchronization signal block in the at least one synchronization signal block is associated with one random access configuration information in the plurality of random access configuration information; One synchronization signal block in the at least one synchronization signal block is associated with k random access configuration information in the plurality of random access configuration information; n synchronization signal blocks in the at least one synchronization signal block are associated with one random access configuration information in the plurality of random access configuration information; n synchronization signal blocks in the at least one synchronization signal block are associated with k random access configuration information in the plurality of random access configuration information; Wherein n and k are positive integers greater than or equal to 2.

16. The method of claim 14, wherein, Each of the at least one synchronization signal block is associated with a system information block; the system information block comprises the random access configuration information associated with the synchronization signal block.

17. The method of claim 14, wherein, Each of the at least one synchronization signal block is associated with a random access opportunity.

18. The method of claim 17, wherein, The number of random access opportunities associated with different synchronization signal blocks is the same or different.

19. The method of claim 17, wherein, The multiple synchronization signal blocks are associated with the same random access opportunity, and the random access preamble sequence ranges associated with the multiple synchronization signal blocks on the random access opportunity are disjoint.

20. The method of claim 19, wherein, The random access preamble sequence range in the random access configuration information associated with the multiple synchronization signal blocks is determined by the number of the multiple synchronization signal blocks.

21. The method of claim 14, wherein, Each of the multiple random access configuration information is used to indicate a valid random access opportunity; in the case of transmission resource overlap of multiple random access opportunities indicated by different random access configuration information, the random access opportunity with the highest priority in the multiple random access opportunities is the valid random access opportunity.

22. The method of claim 21, wherein, In the case of no transmission resource overlap of multiple random access opportunities indicated by different random access configuration information, the multiple random access opportunities are all valid random access opportunities.

23. The method of claim 14, wherein, Each of the multiple random access configuration information includes at least one of the following: physical random access configuration index, physical random access configuration period, preamble sequence format, message 1 time domain information, number of frequency division random access opportunities of message 1, message 1 frequency domain starting position, preamble target received power, physical random access power step size, random access preamble maximum transmission times, random access response time window length, message 1 subcarrier spacing, message 3 transmission precoding enable identification, number of preamble sequences for contention random access, physical random access root sequence index, contention resolution timer initial value, message 3 transmission block size threshold, synchronization signal block selection reference signal received power threshold, extended uplink synchronization signal block selection reference signal received power threshold, total number of preamble sequences for user random access, synchronization signal block and random access opportunity association relationship and the number of contention-based preamble sequences corresponding to each synchronization signal block, restriction set configuration, message 1 repeated transmission identification, message 1 repeated transmission times, sub-band full duplex configuration, full duplex configuration, random access opportunity, increased random access opportunity; wherein the message 1 is a message carrying a preamble sequence in a random access process, and the message 3 is a message used to request connection establishment in a random access process.

24. A communications device comprising: A memory and a processor; wherein the memory is coupled with the processor; the memory is used to store instructions executable by the processor; the processor executes the instructions to perform the method according to any one of claims 1-13, or perform the method according to any one of claims 14-23.

25. A computer readable storage medium, wherein, The computer readable storage medium stores computer instructions, when the computer instructions run on the computer, make the computer execute the method according to any one of claims 1-13, or execute the method according to any one of claims 14-23.

26. A computer program product, wherein, The computer program product includes computer program instructions, when the computer program instructions are executed by the processor, the method according to any one of claims 1-13 is implemented, or the method according to any one of claims 14-23 is executed.

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