Random access method, device, equipment and readable storage medium

Abstract

An embodiment of the present application provides a random access method, apparatus, device and readable storage medium, the method comprising: measuring an SSB beam; determining at least two SSB beams based on the measurement value of the SSB beam, the at least two SSB beams corresponding to different random access resources, respectively, wherein when the random access initiated by the terminal on one of the random access resources fails, the terminal initiates random access on other random access resources. In an embodiment of the present application, the terminal can select different random access resources for polling random access to increase the success rate of random access.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to a random access method, apparatus, device, and readable storage medium. Background Art

[0002] In high-speed mobile scenarios, if the terminal location is confirmed by using a sounding reference signal (SRS), access failure may occur if the terminal is disconnected and then reconnected during movement.

[0003] During random access, the beam confirmed by the random access resource is wrong, and the beam switching needs to be completed as soon as possible. Considering the terminal measurement delay, the beam switching may not be timely, resulting in a high random access failure rate. Summary of the Invention

[0004] An object of the embodiments of the present application is to provide a random access method, apparatus, device, and readable storage medium to solve the problem of high random access failure rate.

[0005] According to a first aspect, a random access method is provided, which is performed by a terminal and includes:

[0006] Perform measurements on the SSB beam;

[0007] According to the measurement value of the SSB beam, at least two SSB beams are determined, and the at least two SSB beams correspond to different random access resources respectively. When the random access initiated by the terminal on one of the random access resources fails, the terminal initiates random access on other random access resources.

[0008] Optionally, the at least two SSB beams include: a first SSB beam and a second SSB beam, a measurement value of the first SSB beam is better than a measurement value of the second SSB beam, and the method further includes:

[0009] A first random access process is initiated through the random access resources corresponding to the first SSB beam; if the first random access process fails, a second random access process is initiated through the random access resources corresponding to the second SSB beam.

[0010] Optionally, each of the at least two SSB beams has a one-to-one QCL relationship with the TRS configured for the terminal.

[0011] Optionally, the method further includes:

[0012] determining a target SSB beam from the at least two SSB beams;

[0013] Random access is initiated through the random access resources corresponding to the target SSB beam; wherein, the target SSB beam is determined by the terminal or indicated by the network side.

[0014] Optionally, the at least two SSB beams belong to the same cell or different cells.

[0015] Optionally, if the at least two SSB beams belong to different cells, the method further includes:

[0016] Save information about the cells to which the at least two SSB beams belong.

[0017] Optionally, the method further includes:

[0018] During the random access process, the network side receives messages sent by sending messages uniformly or alternating with adjacent beams.

[0019] In a second aspect, a random access method is provided, which is performed by a TRP, including:

[0020] A message sent by a receiving terminal during a random access process, wherein the random access process is initiated by the terminal through at least two SSB beams corresponding to one random access resource of different random access resources, wherein the at least two SSB beams are determined by the terminal according to the measurement value of the SSB beam, and when the random access initiated by the terminal on one of the random access resources fails, the terminal initiates random access on other random access resources.

[0021] Optionally, the method also includes: receiving information of at least two SSB beams sent by the terminal, indicating a target SSB beam among the at least two SSB beams to the terminal, and the terminal initiating random access through random access resources corresponding to the target SSB beam.

[0022] Optionally, each of the at least two SSB beams has a one-to-one QCL relationship with the TRS configured for the terminal.

[0023] Optionally, the method further includes: during the random access process, sending a message to the terminal by sending the message uniformly or alternating with adjacent beams.

[0024] Optionally, the method further includes:

[0025] A plurality of CSI-RS resources are configured for a set of reference signals for a TRS, and the plurality of CSI-RS resources are associated with the same direction.

[0026] Optionally, at least one group of CSI-RS resources among the multiple CSI-RS resources has one or more of the following characteristics:

[0027] Configured as an RLM RS resource;

[0028] CSI-RS resources configured for RSRP measurement.

[0029] Optionally, the number of RLM RS resources and / or CSI-RS resources used for RSRP measurement is based on the number of CSI-RS resources in a cell.

[0030] Optionally, the RLM RS resource cooperates with the SSB beam to feedback RLF.

[0031] According to a third aspect, a random access method is provided, which is performed by a terminal and includes:

[0032] Report the RSRP measurement values corresponding to one or more beam identifiers to the TRP;

[0033] Acquire one or more sets of non-contention random access resources allocated by the TRP to the terminal according to the RSRP measurement value.

[0034] Optionally, different non-contention random access resources correspond to different random access resource priorities, and the random access resource priority indicates the priority of the terminal in initiating non-contention random access using the non-contention random access resource.

[0035] Optionally, the method further includes:

[0036] If non-contention random access fails, contention random access is initiated through random access resources corresponding to a specific SSB beam, and the measurement value of the specific SSB beam is greater than the measurement values of other SSB beams.

[0037] Optionally, the SSB beam has a QCL relationship with the TRS configured by the terminal.

[0038] In a fourth aspect, a random access method is provided, which is performed by a TRP, including:

[0039] Receive RSRP measurement values corresponding to one or more beam identifiers reported by the terminal;

[0040] One or more sets of non-contention random access resources are allocated to the terminal according to the RSRP measurement value.

[0041] Optionally, different non-contention random access resources correspond to different random access resource priorities, and the random access resource priority indicates the priority of the terminal in initiating non-contention random access using the non-contention random access resource.

[0042] Optionally, the method further includes:

[0043] When the terminal fails in the first non-contention random access, non-contention random access resources are reallocated to the terminal, or random access responses are sent in adjacent beams or all beams of the beam corresponding to the non-contention random access resources.

[0044] According to a fifth aspect, a random access device is provided, comprising:

[0045] A measurement module, used to measure the SSB beam;

[0046] The first determination module is used to determine at least two SSB beams based on the measurement value of the SSB beam, and the at least two SSB beams correspond to different random access resources respectively. When the random access initiated by the terminal on one of the random access resources fails, the terminal can initiate random access through other random access resources.

[0047] According to a sixth aspect, a random access device is provided, including:

[0048] The second receiving module is used to receive a message sent by the terminal during a random access process, where the random access process is initiated by the terminal through at least two SSB beams corresponding to one random access resource of different random access resources, wherein the at least two SSB beams are determined by the terminal based on the measurement value of the SSB beam. When the random access initiated by the terminal on one of the random access resources fails, the terminal initiates random access on other random access resources.

[0049] According to a seventh aspect, a random access device is provided, comprising:

[0050] A second sending module is used to report RSRP measurement values corresponding to one or more beam identifiers to the TRP;

[0051] The first acquisition module is configured to acquire one or more sets of non-contention random access resources allocated by the TRP to the terminal according to the RSRP measurement value.

[0052] According to an eighth aspect, a random access device is provided, including:

[0053] a fourth receiving module, configured to receive RSRP measurement values corresponding to one or more beam identifiers reported by the terminal;

[0054] A configuration module is configured to allocate one or more sets of non-contention random access resources to the terminal according to the RSRP measurement value.

[0055] In a ninth aspect, a terminal is provided, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the method described in the first or third aspect.

[0056] In the tenth aspect, a network side device is provided, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the method described in the second aspect or the fourth aspect.

[0057] In the eleventh aspect, a readable storage medium is provided, on which a program is stored. When the program is executed by a processor, the steps of the method described in the first aspect, the second aspect, the third aspect, or the fourth aspect are implemented.

[0058] In an embodiment of the present application, the terminal can determine the random access resources corresponding to at least two SSB beams based on SSB beam measurement. The terminal can select different random access resources for polling random access to increase the success rate of random access. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0060] Figure 1 This is one of the flow charts of the random access method according to an embodiment of the present application;

[0061] Figure 2 This is the second flowchart of the random access method according to an embodiment of the present application;

[0062] Figure 3 This is a schematic diagram of SSB configuration;

[0063] Figures 4a-4c Schematic diagram of the same SSB configuration for some TRPs in the same cell;

[0064] Figure 5 This is one of the schematic diagrams of the random access device in the embodiment of the present application;

[0065] Figure 6 This is the second schematic diagram of the random access device in the embodiment of the present application;

[0066] Figure 7 A schematic diagram of a terminal according to an embodiment of the present application;

[0067] Figure 8 A schematic diagram of a network-side device according to an embodiment of the present application;

[0068] Figure 9 This is the third flowchart of the random access method according to an embodiment of the present application;

[0069] Figure 10 This is the fourth flowchart of the random access method according to an embodiment of the present application;

[0070] Figure 11 This is the third schematic diagram of the random access device in the embodiment of the present application;

[0071] Figure 12 This is the fourth schematic diagram of the random access device in the embodiment of the present application. DETAILED DESCRIPTION

[0072] In the communication system, the Synchronization Signal and PBCH block (SSB) is used to evaluate Radio Link Management (RLM) and send Radio Link Failure (RLF) indications. Simultaneously, a Tracking Reference Signal (TRS) is quasi-co-located (QCL) to the SSB for synchronization and time-frequency domain compensation.

[0073] Using SSB to evaluate RLM and transmit RLF results in reduced accuracy due to the SSB's time-frequency domain resource allocation. Using the Channel State Information Reference Signal (CSI-RS), also known as the Tracking Reference Signal (TRS), to transmit RLF, with full bandwidth distribution and a 5 / 10ms periodicity, provides improved accuracy compared to the 20 Physical Resource Block (PRB) bandwidth and 20ms periodicity of SSB.

[0074] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0075] The term "comprise" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to the process, method, product, or apparatus. In addition, the use of "and / or" in the specification and claims to indicate at least one of the connected objects, such as A and / or B, means that A alone, B alone, and both A and B are included.

[0076] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0077] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as 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. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. However, the following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, although these technologies can also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

[0078] See also Figure 1 , an embodiment of the present application provides a random access method, which is executed by a terminal and includes: step 101 and step 102.

[0079] Step 101: Measure the SSB beam;

[0080] Step 102: Determine at least two SSB beams based on the measurement value of the SSB beam, where the at least two SSB beams correspond to different random access resources respectively. When the random access initiated by the terminal on one of the random access resources fails, the terminal can initiate random access through other random access resources.

[0081] For example, the at least two SSB beams include: a first SSB beam and a second SSB beam, a measurement value of the first SSB beam is better than a measurement value of the second SSB beam, and the method further includes: initiating a first random access process through the random access resources corresponding to the first SSB beam; if the first random access process fails, initiating a second random access process through the random access resources corresponding to the second SSB beam. The first random access process may be a first random access process, and the second random access process is another random access process after the first random access fails.

[0082] Exemplarily, the terminal autonomously selects the strongest SSB beam for access. If the strongest SSB beam access fails, the suboptimal SSB beam is selected for access. The transmission reception point (TRP) receives the possible resources in the random access and feeds back the random access response in the corresponding beam. If the access is not successful within the time window, the terminal can re-access on the suboptimal beam, or the terminal can receive the random access response (Random Access Response, RAR) sent by the TRP through a unified message sending method or alternating with adjacent beams.

[0083] Optionally, each of the at least two SSB beams has a quasi co-location (QCL) relationship with the TRS of the terminal.

[0084] For example, in high-speed rail scenarios or other cell merging scenarios, different SSB beams are configured between different sites in the same cell. To improve synchronization accuracy, each SSB QCL is precisely synchronized to a different TRS resource, ensuring that the SSB and TRS meet the QCL relationship. Different sites in the same cell can also partially configure the same SSB or TRS resources, which can be used for RLM.

[0085] In an embodiment of the present application, the terminal can select different random access resources for polling random access. By using different beam resources for different random accesses, the terminal demodulation performance is improved, the random access success rate is increased, and the beam switching probability is reduced. For example, the terminal reports the measurement results of multiple SSBs, selects the PRACH resource corresponding to the optimal (largest RSRP value) SSB beam for access, and the TRP corresponding to the SSB obtains the terminal access preamble at all random access locations and sends an RAR random access response. If the random access of the timed-out terminal fails (for example, the corresponding RAR docking access response is not received within the time window), the terminal initiates random access at the suboptimal (RSRP value second), and the TRP corresponding to the suboptimal SSB replies with the random access response RAR, so as to ensure that the terminal can complete random access to the system after moving. Alternatively, if the random access of the timed-out terminal fails (for example, the corresponding RAR docking access response is not received within the time window), the terminal initiates a random access request again at the PRACH resource position corresponding to the original SSB. After the TRP receives the random access preamble, different TRPs in the same cell can reply to RAR and other downlink replies (MSG2 and MSG4) at the same time, or reply to RAR and other downlink replies (MSG2 and MSG4) on the random access resources corresponding to all SSB beams to ensure that the terminal can successfully access.

[0086] It is understandable that the measured values of at least two SSB beams are less than the preset values, for example, the difference in the reference signal received power (RSRP) of at least two SSB beams is less than 3dB. The number of SSB beams included in the at least two SSB beams is determined according to the networking mode, for example, it can be two or more, and the embodiment of the present application does not limit the number.

[0087] In an embodiment of the present application, the method also includes: determining a target SSB beam from the at least two SSB beams during the first random access, or when the random access fails; initiating random access through the random access resources corresponding to the target SSB beam; wherein the target SSB beam is determined by the terminal or indicated by the network side.

[0088] For example, during mobile communication, when beam switching occurs, the terminal can report the target beam to switch to, or the TRP can decide on the beam switching. The TRP then uses the media access control control unit to notify the terminal of the Transmission Configuration Indicator (TCI) status (STATES), which includes the SSB beam and the QCL relationship between the SSB and TRS. This reduces beam switching latency.

[0089] In an embodiment of the present application, the at least two SSB beams belong to the same cell or different cells.

[0090] In an embodiment of the present application, if the at least two SSB beams belong to different cells, the terminal saves information about the cells to which the at least two SSB beams belong.

[0091] In an embodiment of the present application, the method further includes:

[0092] During the random access process, a message (or random access reply message) sent by the receiving network side in a unified message sending manner or in an adjacent beam alternating manner, such as message 2 (MSG2) or message 4 (MSG4), is received.

[0093] In an embodiment of the present application, TRP alternately sends PRACH responses (for example, MSG2 or MSG4) in two adjacent beams of the Physical Random Access Channel (PRACH) to increase the PRACH access success rate and avoid terminal access failure.

[0094] In an embodiment of the present application, the terminal can determine the random access resources corresponding to at least two SSB beams based on SSB beam measurement, and the terminal can select different random access resources for polling random access. By using different beam resources for different random accesses, the success rate of random access is increased.

[0095] See also Figure 2 , an embodiment of the present application provides a random access method, which is performed by a TRP, including:

[0096] Step 201: Receive a message sent by the terminal during a random access process, where the random access process is initiated by the terminal through at least two SSB beams corresponding to one of different random access resources, wherein the at least two SSB beams are determined by the terminal based on the measurement values of the SSB beams. When the random access initiated by the terminal on one of the random access resources fails, the terminal initiates random access on other random access resources.

[0097] In an embodiment of the present application, the method further includes: during the random access process, sending a message (such as message 2 or message 4) to the terminal by sending the message uniformly or alternating with adjacent beams.

[0098] In an embodiment of the present application, before the terminal initiates random access, the method also includes: receiving information of at least two SSB beams sent by the terminal, indicating a target SSB beam among the at least two SSB beams to the terminal, and the terminal initiating random access through the random access resources corresponding to the target SSB beam.

[0099] Optionally, each of the at least two SSB beams has a one-to-one QCL relationship with the TRS configured for the terminal.

[0100] In the embodiment of the present application, the different TRPs configure one or more of the following:

[0101] (1) The same or different SSB beams;

[0102] See also Figure 3 ,as well as Figure 4a-4c As shown, in the embodiment of the present application, different TRPs are configured with different SSB beams.

[0103] (2) the same or different TRS;

[0104] (3) A one-to-one QCL relationship between the SSB beam and the TRS.

[0105] In an embodiment of the present application, the method further includes:

[0106] A plurality of channel state information reference signal (CSI-RS) resources are configured for a set of reference signals for a TRS, and the plurality of CSI-RS resources are associated with the same direction.

[0107] In this embodiment of the present application, at least one group of CSI-RS resources among the multiple CSI-RS resources has one or more of the following characteristics:

[0108] (1) Configured as an RLM RS resource, used for RLM, reporting RLF, and improving link monitoring accuracy;

[0109] Optionally, the RLM RS resource cooperates with the SSB beam to feedback RLF, and RLF is triggered when both are RLF at the same time.

[0110] For example, a set of CSI-RS resources for TRS requires four CSI-RS resources. Currently, no more than two CSI-RS resources can be used for RLM, one of which is an SSB beam. Since the four CSI-RS resources for TRS point in the same direction, one of these CSI-RS resources is randomly selected and configured in radio resource control as the RLM reference signal along with the SSB beam for SSB beam measurement and RLF feedback. Simultaneous link and beam detection using the SSB beam and CSI RS resources improves the accuracy of link quality monitoring and beam switching.

[0111] (2) CSI-RS resources configured for RSRP measurement are used for beam detection in the same cell.

[0112] In the embodiment of the present application, the number of the RLM RS resources and / or the CSI-RS resources used for RSRP measurement is based on the number of CSI-RS resources in the cell.

[0113] By configuring one CSI-RS resource among multiple CSI-RS resources for TRS for RLM and RSRP, reference signal resource overhead is reduced.

[0114] In an embodiment of the present application, during the random access process, the terminal uses the random access resources corresponding to the beam with the best measurement results to send messages, and the network side uses a unified message sending method or an alternating method with adjacent beams to send random access reply messages to ensure terminal access performance and increase the random access success rate.

[0115] See also Figure 9 , an embodiment of the present application provides a random access method, which is executed by a terminal, and the specific steps include: step 901 and step 902.

[0116] Step 901: Report RSRP measurement values corresponding to one or more beam identifiers to the TRP;

[0117] Step 902: Obtain one or more sets of non-contention random access resources allocated by the TRP to the terminal according to the RSRP measurement value.

[0118] In the embodiment of the present application, different non-contention random access resources correspond to different random access resource priorities, and the random access resource priority indicates the priority of the terminal in initiating non-contention random access using the non-contention random access resource.

[0119] In an embodiment of the present application, the method also includes: if non-competitive random access fails, initiating competitive random access through random access resources corresponding to a specific SSB beam, and the measurement value of the specific SSB beam is greater than the measurement values of other SSB beams.

[0120] Optionally, the SSB beam has a QCL relationship with the TRS configured by the terminal.

[0121] In the embodiments of the present application, the terminal access performance can be guaranteed and the random access success rate can be increased.

[0122] See also Figure 10 , an embodiment of the present application provides a random access method, which is executed by TRP, and the specific steps include: step 1001 and step 1002.

[0123] Step 1001: Receive RSRP measurement values corresponding to one or more beam identifiers reported by a terminal;

[0124] Step 1002: Allocate one or more sets of non-contention random access resources to the terminal according to the RSRP measurement value.

[0125] In the embodiment of the present application, different non-contention random access resources correspond to different random access resource priorities, and the random access resource priority indicates the priority of the terminal in initiating non-contention random access using the non-contention random access resource.

[0126] In an embodiment of the present application, the method further includes:

[0127] When the terminal fails in the first non-contention random access, non-contention random access resources are reallocated to the terminal, or random access responses are sent in adjacent beams or all beams of the beam corresponding to the non-contention random access resources.

[0128] In the embodiments of the present application, the terminal access performance can be guaranteed and the random access success rate can be increased.

[0129] See also Figure 5 , an embodiment of the present application provides a random access device, the device 500 including:

[0130] A measurement module 501 is configured to measure an SSB beam;

[0131] The first determination module 502 is used to determine at least two SSB beams based on the measurement value of the SSB beam, where the at least two SSB beams correspond to different random access resources respectively. When the random access initiated by the terminal on one of the random access resources fails, the terminal can initiate random access through other random access resources.

[0132] Optionally, the at least two SSB beams include: a first SSB beam and a second SSB beam, a measurement value of the first SSB beam is better than a measurement value of the second SSB beam, and the apparatus 500 further includes:

[0133] A random access module is used to initiate a first random access process through the random access resources corresponding to the first SSB beam; if the first random access process fails, initiate a second random access process through the random access resources corresponding to the second SSB beam.

[0134] Optionally, each of the at least two SSB beams has a one-to-one QCL relationship with the TRS configured for the terminal.

[0135] In an embodiment of the present application, the device further includes:

[0136] A second determining module is configured to determine a target SSB beam from the at least two SSB beams;

[0137] An initiating module is used to initiate random access through the random access resources corresponding to the target SSB beam; wherein, the target SSB beam is determined by the terminal or indicated by the network side.

[0138] In an embodiment of the present application, the at least two SSB beams belong to the same cell or different cells.

[0139] In this embodiment of the present application, if the at least two SSB beams belong to different cells, the apparatus further includes:

[0140] The storage module is used to store information about the cells to which the at least two SSB beams belong.

[0141] In an embodiment of the present application, the device further includes:

[0142] The first receiving module is used to receive messages sent by the network side in a unified message sending manner or in an alternating manner with adjacent beams during a random access process.

[0143] The device provided in the embodiment of the present application can achieve Figure 1 The various processes implemented in the method embodiment shown achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0144] See also Figure 6 , an embodiment of the present application also provides a random access device, the device 600 includes: a second receiving module 601, used to receive a message sent by the terminal during a random access process, the random access process is initiated by the terminal through at least two SSB beams corresponding to one of different random access resources, wherein the at least two SSB beams are determined by the terminal according to the measurement value of the SSB beam, when the random access initiated by the terminal on one of the random access resources fails, the terminal initiates random access on other random access resources.

[0145] In an embodiment of the present application, the device also includes: a third receiving module, which is used to receive information of at least two SSB beams sent by the terminal before the terminal initiates random access, indicate the target SSB beam among the at least two SSB beams to the terminal, and the terminal initiates random access through the random access resources corresponding to the target SSB beam.

[0146] In an embodiment of the present application, each of the at least two SSB beams has a one-to-one QCL relationship with the TRS configured for the terminal.

[0147] In an embodiment of the present application, the device further includes: a first sending module, configured to send a message to the terminal in a random access process by sending the message uniformly or alternating with adjacent beams.

[0148] In an embodiment of the present application, the device further includes:

[0149] The configuration module is configured to configure multiple channel state information reference signal CSI-RS resources for a group of reference signals used for TRS, where the multiple CSI-RS resources are associated with the same direction.

[0150] In this embodiment of the present application, at least one group of CSI-RS resources among the multiple CSI-RS resources has one or more of the following characteristics:

[0151] Configured as an RLM RS resource;

[0152] CSI-RS resources configured for RSRP measurement.

[0153] In the embodiment of the present application, the number of the RLM RS resources and / or the CSI-RS resources used for RSRP measurement is based on the number of CSI-RS resources in the cell.

[0154] In an embodiment of the present application, the RLM RS resource cooperates with the SSB beam to feedback RLF.

[0155] The device provided in the embodiment of the present application can achieve Figure 2 The various processes implemented in the method embodiment shown achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0156] See also Figure 11 , an embodiment of the present application provides a random access device, the device 1100 including:

[0157] The second sending module 1101 is configured to report RSRP measurement values corresponding to one or more beam identifiers to the TRP;

[0158] The first acquisition module 1102 is configured to acquire one or more sets of non-contention random access resources allocated by the TRP to the terminal according to the RSRP measurement value.

[0159] Optionally, different non-contention random access resources correspond to different random access resource priorities, and the random access resource priority indicates the priority of the terminal in initiating non-contention random access using the non-contention random access resource.

[0160] Optionally, the apparatus 1100 further includes:

[0161] The random access initiating module is used to initiate competitive random access through the random access resources corresponding to a specific SSB beam if non-competitive random access fails, and the measurement value of the specific SSB beam is greater than the measurement values of other SSB beams.

[0162] Optionally, the SSB beam has a QCL relationship with the TRS configured by the terminal.

[0163] The device provided in the embodiment of the present application can achieve Figure 9 The various processes implemented in the method embodiment shown achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0164] See also Figure 12 In an embodiment of the present application, a random access device is provided. The device 1200 includes:

[0165] The fourth receiving module 1201 is configured to receive RSRP measurement values corresponding to one or more beam identifiers reported by the terminal;

[0166] The configuration module 1202 is configured to allocate one or more sets of non-contention random access resources to the terminal according to the RSRP measurement value.

[0167] Optionally, different non-contention random access resources correspond to different random access resource priorities, and the random access resource priority indicates the priority of the terminal in initiating non-contention random access using the non-contention random access resource.

[0168] Optionally, the configuration module 1202 is further used to: when the terminal fails in the first non-competitive random access, reallocate non-competitive random access resources to the terminal, or send a random access response in an adjacent beam or all beams of the beam corresponding to the non-competitive access resource.

[0169] The device provided in the embodiment of the present application can achieve Figure 10 The various processes implemented in the method embodiment shown achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0170] Figure 7 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0171] The terminal 700 includes but is not limited to components such as a radio frequency unit 701 , a network module 702 , an audio output unit 703 , an input unit 704 , a sensor 705 , a display unit 706 , a user input unit 707 , an interface unit 708 , a memory 709 , and a processor 710 .

[0172] Those skilled in the art will understand that the terminal 700 may also include a power supply (such as a battery) to power each component, and the power supply may be logically connected to the processor 710 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. Figure 7 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be repeated here.

[0173] It should be understood that in an embodiment of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042, and the graphics processor 7041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0174] In this embodiment of the present application, the radio frequency unit 701 receives downlink data from the network-side device and transmits it to the processor 710 for processing. Furthermore, the radio frequency unit 701 transmits uplink data to the network-side device. Typically, the radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0175] The memory 709 can be used to store software programs or instructions and various data. The memory 709 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, at least one application program or instruction required for a function (such as a sound playback function, an image playback function, etc.). In addition, the memory 709 may include a high-speed random access memory and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device.

[0176] Processor 710 may include one or more processing units. Optionally, processor 710 may integrate an application processor and a modem processor. The application processor primarily processes the operating system, user interface, and application programs or instructions, while the modem processor primarily processes wireless communications, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 710.

[0177] The terminal provided in the embodiment of the present application can achieve Figure 1 The various processes implemented in the method embodiment shown achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0178] The embodiment of the present application also provides a network side device. Figure 8 As shown, network-side device 800 includes an antenna 801, a radio frequency device 802, and a baseband device 803. Antenna 801 is connected to radio frequency device 802. In the uplink direction, radio frequency device 802 receives information via antenna 801 and sends the received information to baseband device 803 for processing. In the downlink direction, baseband device 803 processes the information to be transmitted and sends it to radio frequency device 802. Radio frequency device 802 processes the received information and then sends it through antenna 801.

[0179] The frequency band processing device may be located in the baseband device 803 . The method performed by the network-side device in the above embodiment may be implemented in the baseband device 803 . The baseband device 803 includes a processor 804 and a memory 805 .

[0180] The baseband device 803 may include, for example, at least one baseband board, on which a plurality of chips are arranged, such as Figure 8 As shown, one of the chips is, for example, a processor 804, which is connected to a memory 805 to call a program in the memory 805 and execute the network-side device operations shown in the above method embodiment.

[0181] The baseband device 803 may further include a network interface 806 for exchanging information with the radio frequency device 802 . The interface may be, for example, a common public radio interface (CPRI).

[0182] Specifically, the network side device of the embodiment of the present invention further includes: instructions or programs stored in the memory 805 and executable on the processor 804, and the processor 804 calls the instructions or programs in the memory 805 to execute. Figure 6 The methods executed by the modules shown achieve the same technical effects, so they will not be described here to avoid repetition.

[0183] The network side device provided in the embodiment of the present application can achieve Figure 2 The various processes implemented in the method embodiment shown achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0184] The embodiment of the present application also provides a readable storage medium on which a program or instruction is stored, and when the program or instruction is executed by the processor, the above Figure 1 or Figure 2 The various processes of the method embodiment shown can achieve the same technical effect, and to avoid repetition, they will not be described here.

[0185] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), random access memory (RAM), a magnetic disk, or an optical disk.

[0186] The steps of the method or algorithm described in conjunction with the contents disclosed in this application can be implemented in hardware or by executing software instructions on a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, mobile hard disk, read-only optical disk or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be carried in an ASIC. In addition, the ASIC can be carried in a core network interface device. Of course, the processor and the storage medium can also exist in the core network interface device as discrete components.

[0187] Those skilled in the art will appreciate that, in one or more of the examples above, the functions described herein may be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions may be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transmission of a computer program from one place to another. The storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0188] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of this application. It should be understood that the above description is only the specific implementation methods of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of this application should be included in the scope of protection of this application.

[0189] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the embodiments of the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0190] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0191] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0192] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0193] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations.

Claims

1. A random access method, performed by a terminal, characterized in that: include: Measure the synchronization signal block SSB beam; Determining at least two SSB beams according to the measurement value of the SSB beam, where the at least two SSB beams correspond to different random access resources, respectively, wherein when random access initiated by the terminal on one of the random access resources fails, the terminal initiates random access on other random access resources; Among them, each SSB beam of the at least two SSB beams has a one-to-one quasi-co-site QCL relationship with the tracking reference signal TRS configured by the terminal.

2. The method according to claim 1, characterized in that The at least two SSB beams include: a first SSB beam and a second SSB beam, a measurement value of the first SSB beam is better than a measurement value of the second SSB beam, and the method further includes: A first random access process is initiated through the random access resources corresponding to the first SSB beam; if the first random access process fails, a second random access process is initiated through the random access resources corresponding to the second SSB beam.

3. The method according to claim 1, characterized in that The method further comprises: determining a target SSB beam from the at least two SSB beams; Random access is initiated through the random access resources corresponding to the target SSB beam; wherein, the target SSB beam is determined by the terminal or indicated by the network side.

4. The method according to claim 1, wherein The at least two SSB beams belong to the same cell or different cells.

5. The method according to claim 4, characterized in that If the at least two SSB beams belong to different cells, the method further includes: Save information about the cells to which the at least two SSB beams belong.

6. The method according to claim 1, characterized in that The method further comprises: During the random access process, the network side receives messages sent uniformly or in alternating manner with adjacent beams.

7. A random access method, performed by a TRP, characterized in that: include: Receive the message sent by the terminal during the random access process, The random access process is initiated by the terminal through at least two SSB beams corresponding to one random access resource of different random access resources, wherein the at least two SSB beams are determined by the terminal according to the measurement value of the SSB beam, and when the random access initiated by the terminal on one of the random access resources fails, the terminal initiates random access on other random access resources; Each of the at least two SSB beams has a one-to-one QCL relationship with the configured TRS of the terminal.

8. The method according to claim 7, characterized in that Before the terminal initiates random access, the method further includes: Information of at least two SSB beams sent by a receiving terminal is indicated to the terminal, and the terminal initiates random access through random access resources corresponding to the target SSB beam.

9. The method according to claim 7, characterized in that The method further comprises: During the random access process, messages are sent to the terminal in a unified manner or in an alternating manner with adjacent beams.

10. The method according to claim 7, characterized in that The method further comprises: A plurality of channel state information reference signal (CSI-RS) resources are configured for a set of reference signals for a TRS, and the plurality of CSI-RS resources are associated with the same direction.

11. The method according to claim 10, characterized in that At least one group of CSI-RS resources among the multiple CSI-RS resources has one or more of the following characteristics: Configured as a radio link measurement reference signal RLM RS resource; The CSI-RS resource is configured for reference signal received power (RSRP) measurement.

12. The method according to claim 11, characterized in that The number of RLM RS resources and / or CSI-RS resources used for RSRP measurement is based on the number of CSI-RS resources in the cell.

13. The method according to claim 11, characterized in that The RLM RS resource cooperates with the SSB beam to feedback a radio link failure RLF.

14. A random access method, performed by a terminal, characterized in that: include: Report the RSRP measurement values corresponding to one or more beam identifiers to the TRP; Obtain one or more sets of non-contention random access resources allocated by the TRP to the terminal according to the RSRP measurement value; The method further comprises: If non-competitive random access fails, competitive random access is initiated through the random access resources corresponding to a specific SSB beam, the measurement value of the specific SSB beam is greater than the measurement values of other SSB beams, and the SSB beam has a QCL relationship with the TRS configured by the terminal.

15. The method according to claim 14, characterized in that Different non-contention random access resources correspond to different random access resource priorities, and the random access resource priority indicates the priority of the terminal in initiating non-contention random access using the non-contention random access resource.

16. A random access method, performed by a TRP, characterized in that: include: Receive RSRP measurement values corresponding to one or more beam identifiers reported by the terminal; Allocate one or more sets of non-contention random access resources to the terminal according to the RSRP measurement value; The method further comprises: The terminal is monitored to initiate competitive random access through random access resources corresponding to a specific SSB beam, the measurement value of the specific SSB beam is greater than the measurement values of other SSB beams, and the SSB beam has a QCL relationship with the TRS configured by the terminal.

17. The method according to claim 16, characterized in that Different non-contention random access resources correspond to different random access resource priorities, and the random access resource priority indicates the priority of the terminal in initiating non-contention random access using the non-contention random access resource.

18. The method according to claim 17, characterized in that The method further comprises: When the terminal fails in the first non-contention random access, non-contention random access resources are reallocated to the terminal, or random access responses are sent in adjacent beams or all beams of the beam corresponding to the non-contention random access resources.

19. A random access device, characterized in that: include: A measurement module, used to measure the SSB beam; A first determining module is configured to determine at least two SSB beams based on the measurement value of the SSB beam, where the at least two SSB beams correspond to different random access resources, respectively, wherein when random access initiated by a terminal on one of the random access resources fails, the terminal can initiate random access through other random access resources; Each of the at least two SSB beams has a one-to-one QCL relationship with the configured TRS of the terminal.

20. A random access device, characterized in that: include: a second receiving module, configured to receive a message sent by a terminal in a random access process, where the random access process is initiated by the terminal through at least two SSB beams corresponding to one of different random access resources, respectively, wherein the at least two SSB beams are determined by the terminal according to measurement values of the SSB beams, and when the random access initiated by the terminal on one of the random access resources fails, the terminal initiates random access on other random access resources; Each of the at least two SSB beams has a one-to-one QCL relationship with the configured TRS of the terminal.

21. A random access device, characterized in that: include: A second sending module is used to report RSRP measurement values corresponding to one or more beam identifiers to the TRP; A first acquisition module is configured to acquire one or more sets of non-contention random access resources allocated by the TRP to the terminal according to the RSRP measurement value; A random access initiation module is used to initiate competitive random access through random access resources corresponding to a specific SSB beam if non-competitive random access fails. The measurement value of the specific SSB beam is greater than the measurement values of other SSB beams, and the SSB beam has a QCL relationship with the TRS configured by the terminal.

22. A random access device, characterized in that: include: a fourth receiving module, configured to receive RSRP measurement values corresponding to one or more beam identifiers reported by the terminal; A configuration module, configured to allocate one or more sets of non-contention random access resources to the terminal according to the RSRP measurement value; A monitoring module is used to monitor the terminal initiating competitive random access through random access resources corresponding to a specific SSB beam, the measurement value of the specific SSB beam is greater than the measurement values of other SSB beams, and the SSB beam has a QCL relationship with the TRS configured by the terminal.

23. A terminal, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the program implements the steps of the method according to any one of claims 1 to 6, or the steps of the method according to any one of claims 14 to 15.

24. A network side device, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the steps of the method according to any one of claims 7 to 13 and the steps of the method according to any one of claims 16 to 18 are implemented.

25. A readable storage medium, characterized in that The readable storage medium stores a program, and when the program is executed by a processor, the steps of the method according to any one of claims 1 to 18 are implemented.

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