Random access method and apparatus, device, and readable storage medium

Abstract

The present application discloses a random access method and apparatus, a device, and a readable storage medium. The method comprises: a terminal acquiring configuration information of a random access resource; and the terminal performing random access on the basis of the configuration information of the random access resource, wherein the random access resource comprises at least one of the following: a first resource for CFRA, the first resource being different from a configured resource for CFRA; a first preamble associated with a second resource, the first preamble being different from a configured preamble of the second resource; and a second preamble associated with a third resource, the second preamble being different from a configured preamble of the third resource, wherein the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource at least for CBRA.

Description

Random access method, device, equipment and readable storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202410055485.8 filed on January 12, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a random access method, apparatus, device and readable storage medium. Background Art

[0004] In a communication network, many terminals may need to use the random access process to perform cell switching, beam switching, or uplink resynchronization simultaneously or in a short period of time. For example, in a non-terrestrial network (NTN), satellite switching may require a large number or even all terminals to quickly switch to a new satellite through random access. At this time, random access resource conflicts may occur, resulting in random access failure. Summary of the Invention

[0005] Embodiments of the present application provide a random access method, apparatus, device, and readable storage medium, which can solve the problem of random access failure caused by random access resource conflict.

[0006] In a first aspect, a random access method is provided, including:

[0007] The terminal obtains configuration information of random access resources;

[0008] The terminal performs random access according to the configuration information of the random access resource;

[0009] The random access resource includes at least one of the following:

[0010] a first resource for the CFRA, the first resource being different from a resource already configured for the CFRA;

[0011] a first preamble associated with a second resource, the first preamble being different from a configured preamble of the second resource;

[0012] a second preamble associated with a third resource, the second preamble being different from a configured preamble of the third resource;

[0013] The second resource is a PRACH resource used for CFRA, and the third resource is a PRACH resource used at least for CBRA.

[0014] In a second aspect, a random access method is provided, including:

[0015] The network side device sends the configuration information of the random access resource to the terminal;

[0016] The random access resource includes at least one of the following:

[0017] a first resource for the CFRA, the first resource being different from a resource already configured for the CFRA;

[0018] a first preamble associated with a second resource, the first preamble being different from a configured preamble of the second resource;

[0019] a second preamble associated with the third resource, the second preamble being different from a configured preamble of the second resource;

[0020] The second resource is a PRACH resource used for CFRA, and the third resource is a PRACH resource used at least for CBRA.

[0021] In a third aspect, a random access device is provided, comprising: a first transceiver unit and a first processing unit;

[0022] The first transceiver unit is used to obtain configuration information of random access resources;

[0023] The first processing unit is configured to perform random access according to the configuration information of the random access resource;

[0024] The random access resource includes at least one of the following:

[0025] a first resource for the CFRA, the first resource being different from a resource already configured for the CFRA;

[0026] a first preamble associated with a second resource, the first preamble being different from a configured preamble of the second resource;

[0027] a second preamble associated with a third resource, the second preamble being different from a configured preamble of the third resource;

[0028] The second resource is a PRACH resource used for CFRA, and the third resource is a PRACH resource used at least for CBRA.

[0029] According to a fourth aspect, a random access device is provided, comprising:

[0030] A second transceiver unit, configured to send configuration information of random access resources to the terminal;

[0031] The random access resource includes at least one of the following:

[0032] a first resource for the CFRA, the first resource being different from a resource already configured for the CFRA;

[0033] a first preamble associated with a second resource, the first preamble being different from a configured preamble of the second resource;

[0034] a second preamble associated with the third resource, the second preamble being different from a configured preamble of the second resource;

[0035] The second resource is a PRACH resource used for CFRA, and the third resource is a PRACH resource used at least for CBRA.

[0036] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0037] In the sixth aspect, a network side device is provided, comprising: a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the second aspect.

[0038] In the seventh aspect, a communication system is provided, comprising a terminal and a network side device; wherein the terminal is used to execute the steps of the method described in the first aspect, and the network side device is used to execute the steps of the method described in the second aspect.

[0039] In an eighth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor of a terminal, the steps of the method described in the first aspect or the second aspect are implemented.

[0040] In the ninth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method described in the first aspect or the second aspect.

[0041] In a tenth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a non-volatile storage medium, and the program / program product is executed by at least one processor to implement the steps of the method described in the first aspect or the second aspect.

[0042] In an embodiment of the present application, the random access resources used to perform random access include at least one of the following: a first resource for CFRA, which is different from the configured resource for CFRA; a first preamble code associated with a second resource, which is different from the configured preamble code of the second resource; a second preamble code associated with a third resource, which is different from the configured preamble code of the third resource; wherein the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource at least for CBRA. In this way, by introducing an additional preamble (first preamble code, second preamble code) or introducing an additional random access resource (first resource) on the basis of traditional random access resources, the random access resource capacity during the random access process can be enhanced, the delay of random access can be reduced, the conflict of random access can be reduced, and the success rate of random access can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] FIG1 is a schematic diagram of a non-contention-based random access;

[0044] FIG2 is a second schematic diagram of non-contention-based random access;

[0045] FIG3 is a schematic diagram of one of the mappings between SSB and RO;

[0046] FIG4 is a second schematic diagram of the mapping between SSB and RO;

[0047] FIG5 is a third schematic diagram of the mapping between SSB and RO;

[0048] FIG6 is a schematic diagram of the architecture of a wireless communication system according to an embodiment of the present application;

[0049] FIG7 is a flowchart of a random access method according to an embodiment of the present application;

[0050] FIG8 is a second flow chart of a random access method according to an embodiment of the present application;

[0051] FIG9 is a block diagram of a random access device according to an embodiment of the present application;

[0052] FIG10 is a second block diagram of a random access device according to an embodiment of the present application;

[0053] FIG11 is a schematic diagram of a terminal provided in an embodiment of the present application;

[0054] FIG12 is a schematic diagram of a network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0055] The following will be combined with the accompanying drawings in the embodiments of this application to clearly 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 the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0056] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0057] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the result of the request in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the result of the request based on the judgment result.

[0058] 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) or 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. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems.

[0059] Currently, in fourth-generation (4G) and fifth-generation (5G) mobile communication technology networks, CFRA triggered by higher layers for cell handover and beam failure recovery can only be performed by additionally configuring a random access opportunity (RACH Occasion, RO) and using the physical random access channel (PRACH) configuration table. This not only increases resource overhead but also requires a large number of users to access, resulting in significant access delays. CFRA ordered by the physical downlink control channel (PDCCH) cannot configure new RO resources and must use contention-based random access (CBRA) RO resources.

[0060] In order to enable those skilled in the art to better understand the embodiments of the present application, the following description is first given.

[0061] 1. About the purpose and events of random access.

[0062] Random access can have many purposes. For example, random access triggered by a PDCCH order is primarily used to enable a terminal (e.g., a user equipment (UE)) to obtain uplink time synchronization. For another example, when a UE establishes an initial radio link, it can obtain a user identity, such as a Cell-Radio Network Temporary Identifier (C-RNTI), through a random access procedure.

[0063] The random access procedure is usually triggered by one of the events shown in Table 1.

[0064] Table 1

[0065] 2. About the random access process.

[0066] In related technologies, the random access procedure may be a contention-based random access procedure or a non-contention-based random access procedure.

[0067] The contention-based four-step random access process is as follows: the UE first sends a first message (Msg1) to the network, which includes a preamble; after the network detects the preamble, it sends a second message (Msg2) or a random access response (RAR) message, which includes the number of the preamble detected by the network and the uplink radio resources allocated to the UE to send a third message (Msg3); after receiving Msg2, the UE confirms that at least one of the preamble numbers carried in Msg2 is consistent with the number of the preamble sent by the UE, and then sends Msg3 containing contention resolution information according to the resources indicated by the RAR; after receiving Msg3, the network sends a fourth message (Msg4) containing contention resolution information; after receiving Msg4, the UE confirms that the resolution information is consistent with the one sent by the UE in Msg3, thus completing the four-step random access. The network includes uplink grant (UL grant) information in the RAR to indicate Msg3 PUSCH scheduling information, and includes information such as the random access preamble ID (RACH preamble ID, RAPID), temporary cell radio network temporary identifier (Temporary Cell RNTI, TC-RNTI), and timing advance (TA). If the network does not receive the Msg3 PUSCH, it can schedule the retransmission of the Msg3 PUSCH in the PDCCH scrambled by the TC-RNTI.

[0068] In a contention-based random access process, different UEs randomly select preambles for transmission. This means that different UEs may select the same preamble for transmission on the same time-frequency radio resource (e.g., RO resource). This situation can be understood as a UE preamble conflict. In this case, different UEs will receive the same RAR. At this time, different UEs will transmit Msg3 PUSCH based on the scheduling information in the RAR UL grant. Because related technologies do not support repeated transmission of Msg3 PUSCH, the network can only decode the PUSCH (including contention resolution information) transmitted by one UE on a Msg3 PUSCH scheduling resource. Therefore, the network includes the contention resolution information received in Msg3 in Msg4. If the contention resolution information in Msg4 received by the UE matches the contention resolution information sent by the UE in Msg3 PUSCH, the UE considers contention resolution successful. If they do not match, contention resolution is considered unsuccessful. If contention resolution is unsuccessful, the UE reselects a RACH transmission resource, transmits on the Physical Random Access Channel (PRACH), and makes the next random access attempt.

[0069] In non-contention-based random access, the preamble is allocated by the base station. Such a preamble is called a dedicated random access preamble. The dedicated random access preamble is provided to the UE through RRC signaling or PDCCH order. Therefore, there is no preamble competition here. When the dedicated random access preamble resources are insufficient, the base station notifies the terminal to initiate contention-based random access (RA). CFRA is also known as the three-step RACH procedure. The non-contention-based random access process is as follows:

[0070] Step 1: The base station configures the random access resource configuration information (such as RA preamble) to the UE. The corresponding configuration information will indicate the applicable beam indicator (synchronization signal block (Synchronization Signal and PBCH block, SSB) or channel state information reference signal (Channel State Information Reference Signal, CSI-RS)) and the associated non-contention preamble for the non-contention based random access process. For example:

[0071] a) Handover: The source base station sends a MobilityControlInfo information element (IE) that carries the allocated preamble;

[0072] b) Downlink data arrival: When downlink data arrives at the base station, the base station instructs the UE to initiate RA through downlink control information (DCI) on the PDCCH. The DCI carries the allocated preamble.

[0073] c) Non-Standalone (NSA) networking: When a new radio (NR) cell is added to an NSA, the base station instructs the UE to initiate a RA via a DCI on the PDCCH, which carries the allocated preamble.

[0074] Step 2: Send Msg1 with random access preamble.

[0075] After obtaining the configuration information, the UE selects a beam and its corresponding non-contention preamble and sends Msg1 to the network side.

[0076] Step 3: Random access response Msg2.

[0077] After receiving Msg1, the base station sends a random access response. For example:

[0078] a) Handover: The random access response must contain timing alignment information and an initial uplink grant.

[0079] b) Downlink data arrival: The random access response must include timing alignment information and RAPID.

[0080] c) NSA networking: The random access response must include timing alignment information and RAPID.

[0081] If the RAPID in the RAR is the same as the number of the random access preamble sent by the UE's Msg1, the UE considers that the random access process is successful and sends the PUSCH scheduled by the RAR. Otherwise, the preamble transmission counter (PREAMBLE_TRANSMISSION_COUNTER) is incremented by one, and the random access attempt is re-initiated, the random access resource is selected again, and Msg1 is sent.

[0082] As shown in Figure 1, in CFRA, the network provides a dedicated preamble to the UE through RRC signaling or PDCCH order, so there is no conflict.

[0083] 1) About CFRA triggered by PDCCH order.

[0084] The PDCCH order process is already used in related technologies. The basic concept behind PDCCH order is that when the network detects uplink synchronization loss and there is data waiting in the downlink MAC buffer, it notifies the terminal to initiate an RA request to restore the connection. PDCCH order is a key event in the protocol that triggers RA.

[0085] In simple terms, the PDCCH order is used by the network to resynchronize with the UE. This is indicated by the DCI format 1-0 scrambled with the C-RNTI. When the frequency domain assignment field is all bits 1, the DCI format 1-0 does not schedule the PDSCH, but instead indicates that the UE needs to send a random access. The assigned preamble index, transmission carrier indication, and other information are indicated in the DCI. The base station sends DCI 1_0 on the terminal's resident SSB beam index to trigger the PDCCH order. The PDCCH order triggers the use of a dedicated RACH preamble to enable the non-contention access process, as shown in Figure 2.

[0086] 2) Regarding RRC-triggered CFRA (eg handover).

[0087] The terminal receives random access resource configuration information corresponding to a non-contention-based random access procedure in the RRC. The random access resource configuration information can be used for beam failure recovery (BFR) and non-contention-based random access procedures triggered by handover (HO). For BFR and HO scenarios, the corresponding configuration information indicates the applicable beam indication and associated non-contention preamble for the non-contention-based random access procedure. The corresponding configuration information may also include RO configuration information and a reference signal received power (RSRP) threshold for beam selection.

[0088] After obtaining the configuration information, the terminal determines whether to use non-contention random access resources for BFR and HO based on the measured beam quality and RSRP threshold (for example, non-contention random access resources will be used only if the beam quality is higher than the RSRP threshold). The UE then selects a beam and its corresponding non-contention preamble and sends Msg1 (non-contention preamble) to the network.

[0089] 3. About synchronization signals and physical broadcast channels (PBCH).

[0090] In order for the UE to search for a reasonable cell and synchronize with the selected cell, the network usually needs to broadcast synchronization signals and provide certain master information about the cell. In NR, the UE uses synchronization signals (for example, the Primary Synchronization Signal (PSS) or the Secondary Synchronization Signal (SSS)) to search for the cell to obtain the cell's physical layer cell identifier (PCI) and downlink frequency synchronization. The UE then receives the PBCH and reads system information (e.g., the Master Information Block (MIB)) to obtain the cell's most important system information and information on how to receive other system information (e.g., System Information Block (SIB) 1). After receiving the PBCH, the UE can obtain the cell's downlink timing information (including the system frame number, the position of subframe 0, etc.), thereby achieving downlink time synchronization. Then, by receiving other system information (including SIB1 and SI messages), the UE can obtain information about how the cell works and how to access the cell. Next, the UE will initiate a random access process to obtain uplink synchronization and establish an RRC connection with the network.

[0091] Synchronization signals can include at least one of the following: PSS, SSS, and PBCH. The PBCH carries the most important system information, also known as the master information block. The concept of SSB appears in NR. The original PSS, SSS, PBCH, and demodulation reference signal (DMRS) constitute the SSB within four consecutive orthogonal frequency division multiplex (OFDM) symbols. The frequency domain occupies a total of 240 subcarriers (20 physical resource blocks (PRBs)), numbered 0 to 239.

[0092] 4. Regarding the mapping rules from SSB to RO in 5G NR.

[0093] The configuration parameters for PRACH resources and SSB-RO are configured in the system information block SIB1. In NR, a cell can configure multiple frequency division multiplexing (FDM) PRACH transmission occasions (Physical Random Access Channel transmission opportunities, or PRACH Occasions, abbreviated as ROs) at a time location for PRACH transmission. The number of ROs that can be FDMed at a time can be: {1, 2, 4, 8}, which is configured and determined by the higher-layer parameter msg1-FDM.

[0094] The random access preamble can only be transmitted on the time domain resources configured by the parameter PRACHConfigurationIndex and the frequency domain resources configured by the parameter msg1-FDM. PRACH frequency domain resources n_RA∈{0,1,…,M-1}, where M is equal to the high-layer parameter msg1-FDM. During initial access, the PRACH frequency domain resources n_RA are numbered in ascending order starting from the lowest frequency RO resource in the initial active uplink bandwidth part. Otherwise, the PRACH frequency domain resources n_RA are numbered in ascending order starting from the lowest frequency RO resource in the active uplink bandwidth part. For example, in Figure 3, the number of FDM ROs at a time is 8 (msg1-FDM=8), and the RO resources are numbered from low to high frequency as RO#0 to RO#7.

[0095] In NR, an association relationship exists between the RO and the actual transmitted SSB. ROs are associated with SSBs in the frequency domain (from low frequency to high frequency) and then in the time domain. One SSB may be associated with multiple consecutive ROs, or multiple SSBs may be associated with one RO (in this case, different SSBs correspond to different preambles). This is configured by the network through the parameters SSB per RACH and contention preambles per SSB (ssb-perRACH-OccasionAndCB-PreamblesPerSSB). After all SSBs are associated with the RO in one round, it constitutes an SSB-RO mapping cycle. An SSB-to-RO association period may include one or more SSB-RO mapping periods. An SSB-to-RO association pattern period may include one or more SSB-RO association periods. The SSB-to-RO mapping is repeated based on the association pattern period, which has a maximum value of 160ms.

[0096] Typically, a base station can use different beams to transmit different SSBs. The number of SSBs is configured by the SSB positions in the burst (ssb-PositionsInBurst) parameter. For Frequency Range (FR) 2, the maximum number of SSBs is 64. Based on the strength of the received downlink beam or SSB, the UE selects the RO or "RO and preamble combination" associated with the SSB with a good signal to send Msg1. In this way, the network can determine the SSB selected by the UE based on the RO or "RO and preamble combination" of the received preamble. Msg2 is then sent on the downlink beam corresponding to the SSB to ensure the reception quality of the downlink signal.

[0097] Taking Figure 3 as an example, the number of FDM ROs at a given moment is eight, and the number of SSBs actually transmitted is four, such as SSB#0, SSB#1, SSB#2, and SSB#3. Each SSB is associated with two ROs. If the UE determines to send PRACH or Msg1 on the RO corresponding to SSB#0, the UE selects one RO between RO#0 and RO#1 to send the PRACH.

[0098] Taking Figure 4 as an example, the number of FDM ROs at a given moment is 2, and the number of SSBs actually transmitted is 8, such as SSB#0, SSB#1, ..., SSB#7, with every two SSBs associated with one RO. When multiple SSBs share a RO, the preamble sets associated with these multiple SSBs are different, and the same preamble cannot belong to the preamble sets associated with different SSBs at the same time: Taking RO#0 in Figure 4 as an example, RO#0 has a total of 60 preambles, of which preambles with indexes 0 to 29 are associated with SSB#0, and preambles with indexes 30 to 59 are associated with SSB#1.

[0099] Before sending PRACH, the UE first selects an SSB with an RSRP higher than a threshold based on the RSRP of the received beam. If there are multiple SSBs with RSRP higher than the threshold, the terminal can select any SSB with RSRP higher than the threshold. If there is no SSB with RSRP higher than the threshold, the UE selects an SSB based on the implementation.

[0100] Based on the network (NW) configuration, the UE obtains the correspondence between the SSB and the RO. After selecting the SSB, the RO corresponding to the selected SSB is used as the RO for transmitting the PRACH, Preamble, or Msg1. If the selected SSB is associated with multiple ROs, the terminal can select one of the ROs for transmitting the PRACH, Preamble, or Msg1.

[0101] For example: In the example shown in Figure 3, assuming that the UE selects SSB#1, the UE can select one from RO#2 and RO#3 to send PRACH or Msg1; in the example shown in Figure 4, if the UE selects SSB#1, the UE can select the available RO closest to the current time among the ROs (RO#0 or 4) associated with SSB#1 to send PRACH or Msg1. In the selected RO, the UE selects a preamble from the preamble set associated with the selected SSB to send PRACH. As shown in Figure 4, if one RO is associated with two SSBs, then in the available preamble set associated with the SSB in one RO, the preamble will be divided into two subsets, each subset corresponding to one SSB. The UE will select a preamble sequence in the preamble subset corresponding to the selected SSB for sending PRACH or Msg1.

[0102] 5. Determination of the RO set when PRACH is repeatedly transmitted.

[0103] PRACH repetition is introduced in the related art to enhance uplink coverage. For PRACH repetition, the UE needs to repeatedly send the Preamble on multiple ROs at different positions in the time domain associated with the same SSB, and the number of repetitions can be {2, 4, 8}. After the UE determines the number of PRACH repetitions, it needs to determine the RO set, and the number of valid ROs in the RO set is equal to the number of PRACH repetitions. Assuming that the number of PRACH repetitions is N1, the RO group (group) determination rule is: first determine the starting RO of the RO group, and then determine the remaining N-1 ROs of the RO group. The remaining N1-1 ROs of each RO group are ROs that are associated with the same SSB, the same frequency position, and the same associated Preamble set as the starting RO. For example, assuming that the number of PRACH repetitions is 2, for SSB#0, the RO group can be determined, as shown in Figure 5, where the horizontal axis represents time (time) and the vertical axis represents frequency (frequency). The RO group includes the first RO group (1 st RO group), the second RO group(2 nd RO group), the third RO group(3 rd RO group), the fourth RO group(4 th RO group), SSB#0 in the first RO group is 1 st Starting RO, SSB#0 in the second RO group is 2 nd Starting RO, SSB#0 in the third RO group is 3 rd Starting RO, SSB#0 in the fourth RO group is 4 th starting RO.

[0104] 6. About the technical terms in this application.

[0105] The reference signal in this application may be a signal or channel including at least one of SSB, CSI-RS, synchronization signal, broadcast signal, broadcast channel, and other system message downlink broadcast channel.

[0106] The RACH Occasion or PRACH Occasion in this application may be used to indicate the time-frequency resources required to send a random access related sequence.

[0107] The CBRA RO in this application may be used to indicate the PRACH time-frequency resources that at least support CBRA. The CFRA RO may be used to indicate the PRACH time-frequency resources specifically configured by CFRA.

[0108] The association of a reference signal to a PRACH sequence in this application may also refer to allocating or configuring a PRACH sequence to a reference signal, or allocating or configuring a corresponding reference signal to a PRACH sequence, or mapping a reference signal to a PRACH sequence, where the PRACH sequence may be a preamble.

[0109] FIG6 shows a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 61 and a network-side device 62. The terminal 61 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle user equipment (VUE), a ship-borne device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), a teller machine, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. In addition to the above-mentioned terminal devices, the terminal involved in this application can also be a chip in the terminal, such as a modem chip or a system-on-chip (SoC). It should be noted that the specific type of the terminal 61 is not limited in the embodiment of this application.

[0110] The network-side device 62 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network device, a radio access network (RAN), a radio access network function, or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node. A base station may be referred to as a Node B (NB), an evolved Node B (eNB), the next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B, a Transmission Reception Point (TRP), or other appropriate terms in the art. As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0111] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (MME), access and mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application service discovery function (EASDF), unified data management (UDM), unified data storage (UDR), home user server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BSF), application function ( It should be noted that in the embodiments of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0112] The random access method, apparatus, device, and readable storage medium provided in the embodiments of the present application are described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0113] 7 , an embodiment of the present application provides a random access method, which specifically includes steps: step 701 and step 702 .

[0114] Step 701: The terminal obtains configuration information of random access resources;

[0115] It can be understood that the random access resources in the present application may include at least one of the following: a random access sequence (eg, a preamble), a random access time-frequency domain resource (eg, RO).

[0116] Step 702: The terminal performs random access according to the configuration information of the random access resource;

[0117] The random access resource includes at least one of the following:

[0118] 1) a first resource for CFRA, the first resource being different from a resource already configured for CFRA;

[0119] In this embodiment, the first resource used for CFRA may include a newly configured CFRA RO (e.g., an additional CFRA RO). In related art, the RO used for RRC-triggered CFRA can be separately configured or reuse the RO used for CBRA, while CFRA triggered by PDCCH order can only use the CBRA RO. In this embodiment, capacity is increased for CFRA scenarios using the first resource (e.g., the newly configured CFRA RO).

[0120] In some implementations, for CFRA triggered by physical layer signaling (eg, PDCCH order), in addition to using the CBRA RO, the first resource (eg, a newly configured CFRA RO) may also be used. On the first resource, all preambles may be used.

[0121] For another example, for CFRA triggered by higher-layer signaling (such as proprietary RRC signaling, MAC-CE, or MAC PDU), more or more flexible first resources may be configured.

[0122] 2) a first preamble associated with a second resource, where the first preamble is different from a configured preamble of the second resource, and the second resource is a PRACH resource used for CFRA;

[0123] It can be understood that the first preamble may be a preamble newly configured for the second resource (such as an additional preamble).

[0124] Optionally, the second resource may include a CFRA RO. In related technologies, the RO used for RRC-triggered CFRA may be a separately configured RO (such as a CFRA RO) or a reused RO used for CBRA. CFRA triggered by a PDCCH command can only use a CBRA RO. Furthermore, the preamble used for CFRA on a CBRA RO is different from the preamble used for CBRA. For scenarios using a specially configured CFRA RO, considering introducing an additional preamble to increase capacity.

[0125] 3) A second preamble associated with a third resource, where the second preamble is different from a configured preamble of the third resource. The third resource is a PRACH resource at least used for CBRA.

[0126] It can be understood that the second preamble may be a preamble (such as an additional preamble) newly configured for the third resource (eg, CBRA RO).

[0127] Optionally, the third resource may include a CBRA RO. In related technologies, CFRA triggered by a PDCCH order can only use a CBRA RO. For RRC-triggered CFRA, if no random access resources for CFRA are configured, or if random access resources for CFRA are configured but the RSRP of the associated SSB or CSI-RS is lower than the RSRP threshold (i.e., no associated SSB or CSI-RS is available), the network instructs the UE to initiate CBRA access. In this scenario of using a CBRA RO for random access, it is also possible to consider increasing capacity through a second preamble.

[0128] In this embodiment, the first preamble or the second preamble may be configured or activated through various signaling for different random access purposes.

[0129] Optionally, the first preamble or the second preamble may be configured or activated by one or more of the following signaling:

[0130] 1) High-level signaling;

[0131] Optionally, the high-layer signaling includes at least one of the following: dedicated RACH configuration signaling, RRC signaling specifically used for beam failure recovery, signaling specifically used for flexible PRACH resource activation, etc.

[0132] 2) MAC layer signaling;

[0133] Optionally, the MAC layer signaling includes but is not limited to a MAC CE or a MAC protocol data unit (Protocol Data Unit, PDU) used to trigger the terminal to perform random access.

[0134] 3) Physical layer signaling.

[0135] Optionally, the physical layer signaling includes but is not limited to a PDCCH command.

[0136] In one embodiment of the present application, when the random access resource is the first resource, the configuration information of the random access resource includes at least one of the following:

[0137] 1) first indication information, used to indicate whether the first resource is valid;

[0138] For example, the first indication information is used to indicate whether a newly configured CFRA RO (such as an additional CFRA RO) is effective.

[0139] 2) time domain information of the first resource;

[0140] Optionally, the time domain information of the first resource may be information of a portion of the time domain of the first resource.

[0141] 3) frequency domain information of the first resource;

[0142] Optionally, the frequency domain information of the first resource may be information of a portion of the frequency domain of the first resource.

[0143] 4) power information of the first resource;

[0144] Optionally, the power information of the first resource may be information of partial power of the first resource.

[0145] For example, the power information of the first resource may include at least one of the following: received power and power boost amount.

[0146] 5) association information between a reference signal (e.g., SSB) and the first resource (e.g., additional CFRA RO);

[0147] Optionally, for example, the association relationship information is used to re-indicate the mapping relationship between the first resource (eg, additional CFRA RO) and the reference signal (eg, SSB).

[0148] It can be understood that if the configuration information does not include the association relationship information, the association relationship between the reference signal (eg, SSB) and the first resource (eg, additional CFRA RO) can default to the SSB-RO association relationship under CBRA.

[0149] 6) information on the association between the reference signal and the preamble;

[0150] For example, the association relationship information is used to indicate that there is an association relationship between a new reference signal (eg, SSB) and a preamble code on the first resource (eg, an additional CFRA RO), for example, one preamble code can be mapped to 2 SSBs.

[0151] 7) Information on the association between the first resource (eg, additional CFRA RO) and the preamble.

[0152] Optionally, the time domain information of the first resource includes at least one of the following:

[0153] 1) Time domain offset (offest);

[0154] Optionally, the time domain offset is used to indicate at least one of the following: the time domain interval of the first resource (e.g., additional CFRA RO) relative to the CBRA RO; the time domain interval of the first resource (e.g., additional CFRA RO) relative to the configured resources for CFRA (e.g., traditional CFRA RO).

[0155] 2) Radio frame number or subframe number;

[0156] For example, the radio frame number or subframe number associated with the first resource (eg, the additional CFRA RO).

[0157] 3) PRACH time slot;

[0158] For example, the time slot of the PRACH associated with the first resource (eg, the additional CFRA RO).

[0159] 4)PRACH frame;

[0160] For example, the frame of the PRACH associated with the first resource (eg, the additional CFRA RO).

[0161] 5) PRACH period or configuration period;

[0162] 6) Number of resources in the time domain;

[0163] For example, the number of additional CFRA ROs in the time domain.

[0164] 7) The time domain starting point of the resource.

[0165] For example, the first resource (eg, additional CFRA RO) is a starting symbol in a RACH slot.

[0166] Optionally, the frequency domain information of the first resource includes at least one of the following:

[0167] 1) Frequency domain offset;

[0168] Optionally, the frequency domain offset is used to indicate at least one of the following: the frequency domain interval of the first resource (e.g., additional CFRA RO) relative to the CBRA RO; the frequency domain interval of the first resource (e.g., additional CFRA RO) relative to the configured resource for CFRA (e.g., traditional CFRA RO).

[0169] 2) The number of resources in the frequency domain;

[0170] For example, the number of additional CFRA ROs that exist in FDM at a time point;

[0171] 3) The frequency domain starting point of the resource.

[0172] For example, the offset of the first additional CFRA RO relative to PRB 0 in the frequency domain.

[0173] In one embodiment of the present application, the terminal obtains configuration information of random access resources, including:

[0174] When physical layer signaling triggers random access, the terminal performs at least one of the following:

[0175] 1) The terminal receives the physical layer signaling from a network-side device, where the physical layer signaling includes configuration information of the first resource;

[0176] Optionally, the physical layer signaling may be a PDCCH command, and further, a bit or overhead indicating the configuration information of the first resource is added in the DCI of the PDCCH command.

[0177] For example, the configuration information of the first resource includes a time domain offset. The terminal can determine a first resource (eg, an additional CFRA RO) having a time domain difference of the time domain offset and the same frequency domain position according to the time domain offset and the latest CFRA RO position.

[0178] 2) The terminal receives a PRACH resource configuration table from a network-side device, or the terminal obtains a preset PRACH resource configuration table, where the PRACH resource configuration table includes first information, and the first information is used to indicate configuration information of the first resource.

[0179] Optionally, the PRACH resource configuration table includes N columns of information, where the N columns of information are respectively used to represent different configuration information of the first resource, and N is an integer greater than or equal to 1.

[0180] Table 2 illustrates a PRACH resource configuration table. It can be understood that the configuration of the first resource can be achieved by modifying the traditional PRACH resource configuration table, or the configuration of the first resource can be achieved by a newly defined PRACH resource configuration table. In this embodiment, there is no need to add additional bits or overhead in the DCI of the PDCCH command.

[0181] Table 2: PRACH resource configuration table.

[0182] It should be noted that the additional subframe numbers in Table 2 above are new additions to the traditional PRACH resource configuration table.

[0183] In one embodiment of the present application, the terminal obtains configuration information of random access resources, including:

[0184] When random access is triggered by higher-layer signaling, the terminal performs at least one of the following:

[0185] 1) The terminal receives a first signaling from a network-side device, where the first signaling includes configuration information of the first resource;

[0186] Optionally, the configuration information of the first resource may be a new information element introduced for the first resource, for example, RACH-ConfigDedicated or BeamFailureRecoveryConfig without the generic RACH configuration (rach-ConfigGeneric). Conventional random access resources may be configured with RACH-ConfigDedicated or BeamFailureRecoveryConfig with the presence of rach-ConfigGeneric.

[0187] Optionally, when the network does not configure RACH-ConfigDedicated or rach-ConfigGeneric in BeamFailureRecoveryConfig, the first signaling is new signaling introduced for the first resource.

[0188] For example, the parameter rach-ConfigGeneric exists in the RACH-ConfigDedicated or BeamFailureRecoveryConfig fields. If this parameter is not configured or absent in practice, new random access parameters are used.

[0189] Optionally, the first signaling and the rach-ConfigGeneric configuration in RACH-ConfigDedicated or BeamFailureRecoveryConfig in the related art can be used simultaneously.

[0190] Optionally, the first signaling and part of the configuration of rach-ConfigGeneric in RACH-ConfigDedicated or BeamFailureRecoveryConfig in the related art can be used simultaneously.

[0191] For example, the power determination related parameters of rach-ConfigGeneric in RACH-ConfigDedicated or BeamFailureRecoveryConfig can be directly used for the first resource.

[0192] 2) The terminal receives a second signaling from a network-side device, where the second signaling includes configuration information of the first resource;

[0193] The second signaling is signaling corresponding to the configured resources for CFRA, and the first signaling is signaling different from the second signaling.

[0194] For example, the second signaling may be RACH-ConfigDedicated in the related art or rach-ConfigGeneric in BeamFailureRecoveryConfig.

[0195] Optionally, high-layer signaling includes but is not limited to proprietary RRC signaling, MAC CE, MAC PDU, etc.

[0196] In one embodiment of the present application, when the random access resource is the first preamble, the first preamble satisfies at least one of the following:

[0197] 1) The first preamble is used to request, activate or deactivate a specific signal;

[0198] Optionally, the specific signal includes but is not limited to a broadcast signal.

[0199] 2) The first preamble is a specific preamble assigned to CFRA;

[0200] For example, in addition to supporting the preamble configured along with CBRA and allocated to CFRA, the first preamble is additionally configured for CFRA.

[0201] 3) The first preamble is a specific preamble assigned to CBRA;

[0202] Optionally, the specific preamble allocated to the CBRA includes: a preamble additionally allocated to preamble group A or group B.

[0203] 4) The first preamble is a preamble other than the third preamble;

[0204] 5) a preamble (or a set of preambles) obtained by processing the fourth preamble, where the fourth preamble is any preamble defined by the protocol or a preamble configured for CFRA;

[0205] The above processing includes but is not limited to scrambling, spreading, or interleaving.

[0206] For example, the fourth preamble can be the 64 preambles in NR, or a preamble preconfigured for CFRA.

[0207] The third preamble is at least one of the following:

[0208] 1) The preamble code assigned to CBRA;

[0209] 2) Preamble configured with CBRA and assigned to CFRA;

[0210] 3) Preamble code used for System Information (SI) request.

[0211] In one embodiment of the present application, the terminal performs random access according to the configuration information of the random access resource, including:

[0212] In a case where the second resource (eg, CFRA RO) and the third resource (eg, CBRA RO) do not overlap, the terminal performs random access on the second resource (eg, CFRA RO) according to at least one of the third preamble and the first preamble.

[0213] Optionally, non-overlapping includes at least one of the following:

[0214] 1) The second resource (eg, CFRA RO) and the third resource (eg, CBRA RO) overlap in the time domain and are located at different positions in the frequency domain (eg, the starting points of the frequency domain positions differ by at least 8 frequency domain resources).

[0215] 2) The second resource (eg, CFRA RO) and the third resource (eg, CBRA RO) may overlap in the frequency domain and be located at different positions in the time domain (eg, in different radio frames or different subframes of the same radio frame).

[0216] 3) The second resource (eg, CFRA RO) and the third resource (eg, CBRA RO) do not overlap in the time and frequency domains.

[0217] In one embodiment of the present application, the terminal performs random access according to the configuration information of the random access resource, including:

[0218] In a case where the second resource (e.g., CFRA RO) and the third resource (e.g., CBRA RO) overlap, the terminal performs any one of the following:

[0219] 1) performing random access on the non-overlapping second resource (e.g., CFRA RO) according to at least one of the third preamble and the first preamble;

[0220] 2) performing random access on the overlapping second resource (e.g., CFRA RO) according to at least a preamble configured together with the CBRA and allocated to the CFRA;

[0221] 3) On the overlapping second resource (e.g., CFRA RO), random access is preferentially performed according to the preamble configured together with CBRA and allocated to CFRA, or, when there is no preamble configured together with CBRA and allocated to CFRA, random access is performed according to at least one of the third preamble and the first preamble.

[0222] The overlap between the second resource and the third resource includes partial overlap or complete overlap between the second resource and the third resource.

[0223] In one embodiment of the present application, when the random access resource is the second preamble, the second preamble satisfies at least one of the following:

[0224] 1) The second preamble is used to request, activate or deactivate a specific signal;

[0225] Optionally, the specific signal includes but is not limited to a broadcast signal.

[0226] 2) The first preamble is a specific preamble assigned to CFRA;

[0227] For example, in addition to supporting the preambles allocated to CFRA configured together with CARA, some first preambles are additionally configured for CFRA.

[0228] 3) The first preamble is a preamble other than the third preamble;

[0229] 4) a preamble obtained by processing the fourth preamble, where the fourth preamble is any preamble defined by the protocol or a preamble configured for CFRA;

[0230] Optionally, the processing includes but is not limited to scrambling, spreading or interleaving, etc.

[0231] Optionally, the fourth preamble includes 64 preambles in NR, or is a preamble preconfigured for CFRA.

[0232] The third preamble is at least one of the following:

[0233] 1) The preamble code assigned to CBRA;

[0234] 2) Preamble configured with CBRA and assigned to CFRA;

[0235] 3) Preamble code used for SI request.

[0236] In one embodiment of the present application, the method further comprises at least one of the following:

[0237] 1) The terminal receives third signaling from a network-side device, where the third signaling includes a mapping relationship between the second preamble and a reference signal;

[0238] Optionally, the third signaling may be dedicated signaling for configuring a mapping relationship between the second preamble and a reference signal (e.g., SSB). For example, when configuring the second preamble in the RACH dedicated signaling, a specific reference signal (e.g., SSB) is specified, and the specific reference signal is different from the reference signal specified when configuring the third preamble.

[0239] 2) The terminal determines a mapping relationship between the second preamble code and the reference signal based on a mapping relationship between the third preamble code and the reference signal (eg, SSB).

[0240] For example, one or more preambles are configured in the RACH dedicated signaling, and the corresponding associated SSBs are determined according to a certain rule.

[0241] For example, the third resource (CBRA RO) is associated with four SSBs. The number of second preambles configured for CBRA is 16, which are evenly distributed among the four SSBs, that is, every four second preambles are associated with one SSB. If the network configures four CFRA preambles in proprietary signaling, they are also evenly distributed among the four SSBs.

[0242] Optionally, the number of reference signals associated with each second preamble is different from the number of reference signals associated with the third preamble. For example, the second preamble may be associated with multiple reference signals, and a terminal only uses one corresponding associated reference signal (eg, SSB).

[0243] Optionally, the number of reference signals associated with each second preamble is the same as the number of reference signals associated with the third preamble, for example, reusing the relevant association configuration of the third preamble.

[0244] In one embodiment of the present application, the terminal obtains configuration information of random access resources, including:

[0245] The terminal receives fourth signaling from the network side device;

[0246] The fourth signaling includes configuration information of the first preamble or configuration information of the second preamble, and the fourth signaling includes at least one of the following:

[0247] 1) High-level signaling;

[0248] Optionally, the high-layer signaling includes at least one of the following: dedicated RACH configuration signaling, RRC signaling specifically used for beam failure recovery, signaling specifically used for flexible PRACH resource activation, etc.

[0249] 2) MAC layer signaling;

[0250] Optionally, the MAC layer signaling includes but is not limited to a MAC CE or a MAC PDU used to trigger the terminal to perform random access.

[0251] 3) Physical layer signaling.

[0252] Optionally, the physical layer signaling includes but is not limited to a PDCCH command.

[0253] In one embodiment of the present application, the terminal performs random access according to the configuration information of the random access resource, including:

[0254] When the first condition is met, the terminal performs random access according to the configuration information of the random access resource;

[0255] The first condition includes at least one of the following:

[0256] 1) The resources in the random access resources at least include resources used for CBRA;

[0257] Considering that if the resources in the random access resources are CFRA-specific resources, the random access capacity can be enhanced to a certain extent by relying on additional resources configured specifically for CFRA, the first condition may include condition 1).

[0258] 2) The preamble in the random access resource includes at least one preamble for CFRA;

[0259] Considering the CFRA scenario, the network can control which UEs use the same preamble and different associated reference signals, thereby reducing interference between PRACH signals sent by these UEs. In this case, the first condition may include condition 2).

[0260] 3) The resources in the random access resources at least include resources for CFRA;

[0261] 4) The preamble in the random access resource includes at least one preamble for CBRA;

[0262] 5) Random access meets specific scenarios;

[0263] Optionally, the random access specific scenario includes at least one of the following: random access triggered by the network; random access triggered by the terminal; random access triggered by RRC; random access triggered by MAC; random access triggered by the physical layer; random access triggered by paging; random access corresponding to initial access; random access corresponding to RRC connection reconstruction; random access corresponding to synchronous reconfiguration (Synchronous Reconfiguration) or switching, such as large-area terminal reconfiguration or switching; random access corresponding to access in RRC inactive state; random access for requesting or activating or deactivating system messages (SSB or SIB1 or other system messages) on this cell or other cells or this part of the bandwidth or other parts of the bandwidth; random access corresponding to uplink data arriving in the RRC connected state but no PUCCH resources for SR, random access corresponding to scheduling request failure, for example, the scheduling request exceeds the maximum number of transmissions (SR Max Transmission Reacquire PUSCH resources through random access; Random access corresponding to beam failure recovery; Random access corresponding to uplink data arrival in RRC connected state but UE uplink is out of synchronization; Random access corresponding to downlink data arrival in RRC connected state but UE uplink is out of synchronization; Random access corresponding to timing alignment during SCell addition; Random access triggered by user data transmission in idle or inactive state; Two-step random access; Four-step random access.

[0264] 6) The terminal's measurement result of the downlink signal is greater than or equal to a preset threshold;

[0265] Optionally, the measurement result includes but is not limited to at least one of the following: RSRP, Reference Signal Received Quality (RSRQ), Signal-to-Noise Ratio (SNR), Signal-to-Interference-plus-Noise Ratio (SINR).

[0266] Optionally, the preset threshold may be configured by the network or agreed upon by a protocol.

[0267] 7) The terminal has the capability of selecting the random access resource.

[0268] In one embodiment of the present application, the method further comprises at least one of the following:

[0269] 1) The terminal sends a message to the network side device through RRC signaling indicating that the terminal has the ability to select the random access resource;

[0270] 2) the terminal sends a message to a neighboring cell through the current serving cell indicating that the terminal has the capability to select the random access resource;

[0271] 3) The terminal sends a signal to the network side device via an uplink signal or channel indicating that the terminal has the capability to select the random access resource.

[0272] Optionally, the uplink signal or channel includes at least one of the following: Msg3, message A (MsgA), message 5 (Msg5), common PUCCH, PRACH, and sounding reference signal (Sounding Reference Signal, SRS).

[0273] In an embodiment of the present application, the random access resources used to perform random access include at least one of the following: a first resource for CFRA, which is different from the configured resource for CFRA; a first preamble code associated with a second resource, which is different from the configured preamble code of the second resource; a second preamble code associated with a third resource, which is different from the configured preamble code of the third resource; wherein the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource at least for CBRA. In this way, by introducing an additional preamble (first preamble code, second preamble code) or introducing an additional random access resource (first resource) on the basis of traditional random access resources, the random access resource capacity during the random access process can be enhanced, the delay of random access can be reduced, the conflict of random access can be reduced, and the success rate of random access can be improved.

[0274] Referring to FIG. 8 , an embodiment of the present application provides a random access method, and the specific steps include: step 801 .

[0275] Step 801: The network side device sends random access resource configuration information to the terminal;

[0276] The random access resource includes at least one of the following:

[0277] 1) a first resource for CFRA (e.g., an additional CFRA RO), the first resource being different from the resources already configured for CFRA;

[0278] 2) a first preamble associated with the second resource, the first preamble being different from a configured preamble of the second resource;

[0279] 3) a second preamble associated with the third resource, the second preamble being different from a configured preamble of the second resource;

[0280] The second resource is a PRACH resource used for CFRA, and the third resource is a PRACH resource used at least for CBRA.

[0281] In one embodiment of the present application, when the random access resource is the first resource, the configuration information of the random access resource includes at least one of the following:

[0282] First indication information is used to indicate whether the first resource is effective. For example, the first indication information is used to indicate whether a newly configured CFRA RO (such as an additional CFRA RO) is effective.

[0283] time domain information of the first resource;

[0284] frequency domain information of the first resource;

[0285] power information of the first resource;

[0286] Association information between a reference signal (e.g., SSB) and the first resource;

[0287] The association relationship information between the reference signal and the preamble;

[0288] The association relationship information between the first resource and the preamble code.

[0289] In one embodiment of the present application, the network side device sends the configuration information of the random access resource to the terminal, including:

[0290] When random access is triggered by physical layer signaling, the network side device performs at least one of the following:

[0291] 1) The network-side device sends the physical layer signaling to the terminal, where the physical layer signaling includes configuration information of the first resource;

[0292] 2) The network-side device sends a PRACH resource configuration table to the terminal, where the PRACH resource configuration table includes first information, and the first information is used to indicate configuration information of the first resource.

[0293] In one embodiment of the present application, the network side device sends the configuration information of the random access resource to the terminal, including:

[0294] When random access is triggered by higher-layer signaling, the network-side device performs at least one of the following:

[0295] 1) The network-side device sends a first signaling to the terminal, where the first signaling includes configuration information of the first resource;

[0296] 2) The network-side device sends a second signaling to the terminal, where the second signaling includes configuration information of the first resource;

[0297] The second signaling is signaling corresponding to the configured resources for CFRA, and the first signaling is signaling different from the second signaling.

[0298] In one embodiment of the present application, when the random access resource is the first preamble, the first preamble satisfies at least one of the following:

[0299] 1) The first preamble is used to request, activate or deactivate a specific signal;

[0300] 2) The first preamble is a specific preamble assigned to CFRA;

[0301] 3) The first preamble is a specific preamble assigned to CBRA;

[0302] 4) The first preamble is a preamble other than the third preamble;

[0303] 5) a preamble obtained by processing the fourth preamble, where the fourth preamble is any preamble defined by the protocol or a preamble configured for CFRA;

[0304] The third preamble is at least one of the following:

[0305] 1) The preamble code assigned to CBRA;

[0306] 2) Preamble configured with CBRA and assigned to CFRA;

[0307] 3) Preamble code used for SI request.

[0308] In one embodiment of the present application, when the random access resource is the second preamble, the second preamble satisfies at least one of the following:

[0309] 1) The second preamble is used to request, activate or deactivate a specific signal;

[0310] 2) The first preamble is a specific preamble assigned to CFRA;

[0311] 3) The first preamble is a preamble other than the third preamble;

[0312] 4) a preamble obtained by processing the fourth preamble, where the fourth preamble is any preamble defined by the protocol or a preamble configured for CFRA;

[0313] The third preamble is at least one of the following:

[0314] 1) The preamble code assigned to CBRA;

[0315] 2) Preamble configured with CBRA and assigned to CFRA;

[0316] 3) Preamble code used for SI request.

[0317] In one embodiment of the present application, the method further comprises at least one of the following:

[0318] 1) The network-side device sends a third signaling to the terminal, where the third signaling includes a mapping relationship between the second preamble and the reference signal;

[0319] 2) The network-side device determines a mapping relationship between the second preamble and the reference signal based on the mapping relationship between the third preamble and the reference signal;

[0320] In one embodiment of the present application, the network side device sends the configuration information of the random access resource to the terminal, including:

[0321] The network side device sends a fourth signaling to the terminal;

[0322] The fourth signaling includes configuration information of the first preamble or configuration information of the second preamble, and the fourth signaling includes at least one of the following:

[0323] 1) High-level signaling;

[0324] Optionally, the high-layer signaling includes at least one of the following: dedicated RACH configuration signaling, RRC signaling specifically used for beam failure recovery, signaling specifically used for flexible PRACH resource activation, etc.

[0325] 2) MAC layer signaling;

[0326] Optionally, the MAC layer signaling includes but is not limited to a MAC CE or a MAC PDU used to trigger the terminal to perform random access.

[0327] 3) Physical layer signaling.

[0328] Optionally, the physical layer signaling includes but is not limited to a PDCCH command.

[0329] In one embodiment of the present application, the method further comprises at least one of the following:

[0330] 1) The network-side device receives from the terminal through RRC signaling that the terminal has the ability to select the random access resource;

[0331] 2) The network side device receives information from the terminal in the current serving cell indicating that the terminal has the capability to select the random access resource, and sends the information to the neighboring cell;

[0332] 3) The network side device receives information from the terminal through an uplink signal indicating that the terminal has the ability to select the random access resource.

[0333] In an embodiment of the present application, the random access resources used to perform random access include at least one of the following: a first resource for CFRA, which is different from the configured resource for CFRA; a first preamble code associated with a second resource, which is different from the configured preamble code of the second resource; a second preamble code associated with a third resource, which is different from the configured preamble code of the third resource; wherein the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource at least for CBRA. In this way, by introducing an additional preamble (first preamble code, second preamble code) or introducing an additional random access resource (first resource) on the basis of traditional random access resources, the random access resource capacity during the random access process can be enhanced, the delay of random access can be reduced, the conflict of random access can be reduced, and the success rate of random access can be improved.

[0334] 9 , an embodiment of the present application provides a random access device, which is applied to a terminal. The device 900 includes: a first transceiver unit 901 and a first processing unit 902 ;

[0335] The first transceiver unit 901 is used to obtain configuration information of random access resources;

[0336] The first processing unit 902 is configured to perform random access according to the configuration information of the random access resource;

[0337] The random access resource includes at least one of the following:

[0338] 1) a first resource for CFRA (e.g., an additional CFRA RO), the first resource being different from the resources already configured for CFRA;

[0339] 2) a first preamble associated with the second resource, the first preamble being different from a configured preamble of the second resource;

[0340] 3) a second preamble associated with the third resource, the second preamble being different from a configured preamble of the second resource;

[0341] The second resource is a PRACH resource used for CFRA, and the third resource is a PRACH resource used at least for CBRA.

[0342] In one embodiment of the present application, when the random access resource is the first resource, the configuration information of the random access resource includes at least one of the following:

[0343] 1) first indication information, used to indicate whether the first resource is valid;

[0344] For example, the first indication information is used to indicate whether a newly configured CFRA RO (such as an additional CFRA RO) is effective.

[0345] 2) time domain information of the first resource;

[0346] 3) frequency domain information of the first resource;

[0347] 4) power information of the first resource;

[0348] 5) association information between a reference signal (e.g., SSB) and the first resource (e.g., additional CFRA RO);

[0349] 6) information on the association between the reference signal and the preamble;

[0350] 7) Information on the association between the first resource and the preamble.

[0351] In one embodiment of the present application, the first transceiver unit 901 is further configured to perform at least one of the following when physical layer signaling triggers random access:

[0352] 1) receiving the physical layer signaling from a network-side device, where the physical layer signaling includes configuration information of the first resource;

[0353] 2) receiving a PRACH resource configuration table from a network-side device, or the terminal obtaining a preset PRACH resource configuration table, wherein the PRACH resource configuration table includes first information, and the first information is used to indicate configuration information of the first resource.

[0354] In one embodiment of the present application, the first transceiver unit 901 is further configured to perform at least one of the following when random access is triggered by higher layer signaling:

[0355] 1) receiving a first signaling from a network-side device, where the first signaling includes configuration information of the first resource;

[0356] 2) receiving a second signaling from a network-side device, where the second signaling includes configuration information of the first resource;

[0357] The second signaling is signaling corresponding to the configured resources for CFRA, and the first signaling is signaling different from the second signaling.

[0358] In one embodiment of the present application, when the random access resource is the first preamble, the first preamble satisfies at least one of the following:

[0359] 1) The first preamble is used to request, activate or deactivate a specific signal;

[0360] 2) The first preamble is a specific preamble assigned to CFRA;

[0361] 3) The first preamble is a specific preamble assigned to CBRA;

[0362] 4) The first preamble is a preamble other than the third preamble;

[0363] 5) a preamble obtained by processing the fourth preamble, where the fourth preamble is any preamble defined by the protocol or a preamble configured for CFRA;

[0364] The third preamble is at least one of the following:

[0365] 1) The preamble code assigned to CBRA;

[0366] 2) Preamble configured with CBRA and assigned to CFRA;

[0367] 3) Preamble code used for SI request.

[0368] In one embodiment of the present application, the first processing unit 902 is further configured to: when the second resource and the third resource do not overlap, perform random access on the second resource according to at least one of the third preamble code and the first preamble code.

[0369] In one embodiment of the present application, the first processing unit 902 is further configured to: when there is resource overlap between the second resource and the third resource, perform any one of the following:

[0370] performing random access on the non-overlapping second resources according to at least one of the third preamble and the first preamble;

[0371] Performing random access on the overlapped second resource according to a preamble configured together with the CBRA and allocated to the CFRA;

[0372] On the overlapping second resource, random access is preferentially performed according to the preamble configured together with the CBRA and allocated to the CFRA, or when there is no preamble configured together with the CBRA and allocated to the CFRA, random access is performed according to at least one of the other third preambles and the first preamble.

[0373] In one embodiment of the present application, when the random access resource is the second preamble, the second preamble satisfies at least one of the following:

[0374] 1) The second preamble is used to request, activate or deactivate a specific signal;

[0375] 2) The first preamble is a specific preamble assigned to CFRA;

[0376] 3) The first preamble is a preamble other than the third preamble;

[0377] 4) a preamble obtained by processing the fourth preamble, where the fourth preamble is any preamble defined by the protocol or a preamble configured for CFRA;

[0378] The third preamble is at least one of the following:

[0379] 1) The preamble code assigned to CBRA;

[0380] 2) Preamble configured with CBRA and assigned to CFRA;

[0381] 3) Preamble code used for SI request.

[0382] In one embodiment of the present application, the first transceiver unit 901 is further configured to receive a third signaling from a network side device, where the third signaling includes a mapping relationship between the second preamble code and a reference signal (e.g., SSB);

[0383] or,

[0384] The first processing unit 902 is further configured to determine a mapping relationship between the second preamble and the reference signal according to the mapping relationship between the third preamble and the reference signal (e.g., SSB);

[0385] In one embodiment of the present application, the first transceiver unit 901 is further configured to receive fourth signaling from a network-side device;

[0386] The fourth signaling includes configuration information of the first preamble or configuration information of the second preamble, and the fourth signaling includes at least one of the following:

[0387] 1) High-level signaling;

[0388] Optionally, the high-layer signaling includes at least one of the following: dedicated RACH configuration signaling, RRC signaling specifically used for beam failure recovery, signaling specifically used for flexible PRACH resource activation, etc.

[0389] 2) MAC layer signaling;

[0390] Optionally, the MAC layer signaling includes but is not limited to a MAC CE or a MAC PDU used to trigger the terminal to perform random access.

[0391] 3) Physical layer signaling.

[0392] Optionally, the physical layer signaling includes but is not limited to a PDCCH command.

[0393] In one embodiment of the present application, the first processing unit 902 is further configured to: perform random access according to the configuration information of the random access resource when the first condition is met;

[0394] The first condition includes at least one of the following:

[0395] 1) The random access resources at least include resources for CBRA;

[0396] 2) The preamble in the random access resource includes at least one preamble for CFRA;

[0397] 3) The random access resources include at least resources for CFRA;

[0398] 4) The preamble in the random access resource includes at least one preamble for CBRA;

[0399] 5) Random access meets specific scenarios;

[0400] 6) The terminal's measurement result of the downlink signal is greater than or equal to a preset threshold;

[0401] 7) The terminal has the capability of selecting the random access resource.

[0402] In one embodiment of the present application, the first transceiver unit 901 is further configured to send a signal to the network side device through RRC signaling that the terminal has the ability to select the random access resource;

[0403] Alternatively, the first transceiver unit 901 is further configured to send, through the current serving cell, to a neighboring cell, a message indicating that the terminal has the capability of selecting the random access resource;

[0404] Alternatively, the first transceiver unit 901 is further configured to send, to the network side device through an uplink signal, information indicating that the terminal has the capability of selecting the random access resource.

[0405] The device provided in the embodiment of the present application can implement each process implemented in the method embodiment of Figure 7 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0406] 10 , an embodiment of the present application provides a random access apparatus, wherein the apparatus 1000 includes: a second transceiver unit 1001 and a second processing unit 1002 , wherein the second transceiver unit 1001 is configured to send configuration information of random access resources to a terminal;

[0407] The random access resource includes at least one of the following:

[0408] 1) a first resource for CFRA (e.g., an additional CFRA RO), the first resource being different from the resources already configured for CFRA;

[0409] 2) a first preamble associated with the second resource, the first preamble being different from a configured preamble of the second resource;

[0410] 3) a second preamble associated with the third resource, the second preamble being different from a configured preamble of the second resource;

[0411] The second resource is a PRACH resource used for CFRA, and the third resource is a PRACH resource used at least for CBRA.

[0412] In one embodiment of the present application, when the random access resource is the first resource, the configuration information of the random access resource includes at least one of the following:

[0413] First indication information, used to indicate whether the first resource is valid;

[0414] time domain information of the first resource;

[0415] frequency domain information of the first resource;

[0416] power information of the first resource;

[0417] association relationship information between the reference signal and the first resource;

[0418] Association information between the reference signal (e.g., SSB) and the preamble;

[0419] The association relationship information between the first resource and the preamble code.

[0420] In one embodiment of the present application, the second transceiver unit 1001 is further configured to: when random access is triggered by physical layer signaling, perform at least one of the following:

[0421] 1) sending the physical layer signaling to the terminal, where the physical layer signaling includes configuration information of the first resource;

[0422] 2) Sending a PRACH resource configuration table to the terminal, where the PRACH resource configuration table includes first information, and the first information is used to indicate configuration information of the first resource.

[0423] In one embodiment of the present application, the second transceiver unit 1001 is further configured to: when random access is triggered by higher layer signaling, perform at least one of the following:

[0424] 1) sending a first signaling to the terminal, where the first signaling includes configuration information of the first resource;

[0425] 2) sending a second signaling to the terminal, where the second signaling includes configuration information of the first resource;

[0426] The second signaling is signaling corresponding to the configured resources for CFRA, and the first signaling is signaling different from the second signaling.

[0427] In one embodiment of the present application, when the random access resource is the first preamble, the first preamble satisfies at least one of the following:

[0428] 1) The first preamble is used to request, activate or deactivate a specific signal;

[0429] 2) The first preamble is a specific preamble assigned to CFRA;

[0430] 3) The first preamble is a specific preamble assigned to CBRA;

[0431] 4) The first preamble is a preamble other than the third preamble;

[0432] 5) a preamble obtained by processing the fourth preamble, where the fourth preamble is any preamble defined by the protocol or a preamble configured for CFRA;

[0433] The third preamble is at least one of the following:

[0434] 1) The preamble code assigned to CBRA;

[0435] 2) Preamble configured with CBRA and assigned to CFRA;

[0436] 3) Preamble code used for SI request.

[0437] In one embodiment of the present application, when the random access resource is the second preamble, the second preamble satisfies at least one of the following:

[0438] 1) The second preamble is used to request, activate or deactivate a specific signal;

[0439] 2) The first preamble is a specific preamble assigned to CFRA;

[0440] 3) The first preamble is a preamble other than the third preamble;

[0441] 4) a preamble obtained by processing the fourth preamble, where the fourth preamble is any preamble defined by the protocol or a preamble configured for CFRA;

[0442] The third preamble is at least one of the following:

[0443] 1) The preamble code assigned to CBRA;

[0444] 2) Preamble configured with CBRA and assigned to CFRA;

[0445] 3) Preamble code used for SI request.

[0446] In one embodiment of the present application, the second transceiver unit 1001 is further configured to send a third signaling to the terminal, where the third signaling includes a mapping relationship between the second preamble code and the reference signal;

[0447] Alternatively, the second processing unit 1002 is configured to determine a mapping relationship between the second preamble code and the reference signal according to a mapping relationship between the third preamble code and the reference signal.

[0448] In one embodiment of the present application, the second transceiver unit 1001 is further configured to: send fourth signaling to the terminal;

[0449] The fourth signaling includes configuration information of the first preamble or configuration information of the second preamble, and the fourth signaling includes at least one of the following:

[0450] 1) High-level signaling;

[0451] Optionally, the high-layer signaling includes at least one of the following: dedicated RACH configuration signaling, RRC signaling specifically used for beam failure recovery, signaling specifically used for flexible PRACH resource activation, etc.

[0452] 2) MAC layer signaling;

[0453] Optionally, the MAC layer signaling includes but is not limited to a MAC CE or a MAC PDU used to trigger the terminal to perform random access.

[0454] 3) Physical layer signaling.

[0455] Optionally, the physical layer signaling includes but is not limited to a PDCCH command.

[0456] In one embodiment of the present application, the second transceiver unit 1001 is further configured to receive, from the terminal through RRC signaling, information indicating that the terminal has the capability to select the random access resource;

[0457] Alternatively, the second transceiver unit 1001 is further configured to receive information from a terminal in a current serving cell indicating that the terminal has the ability to select the random access resource, and send the information to a neighboring cell;

[0458] Alternatively, the second transceiver unit 1001 is further configured to receive information from the terminal through an uplink signal indicating that the terminal has the capability of selecting the random access resource.

[0459] The device provided in the embodiment of the present application can implement each process implemented in the method embodiment of Figure 8 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0460] FIG11 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application. The terminal 1100 includes, but is not limited to, at least some of the components including a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109, and a processor 1110.

[0461] Those skilled in the art will appreciate that the terminal 1100 may also include a power supply (e.g., a battery) to power various components. The power supply may be logically connected to the processor 1110 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG11 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0462] It should be understood that in an embodiment of the present application, the input unit 1104 may include a graphics processing unit (GPU) 11041 and a microphone 11042, and the graphics processor 11041 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 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1107 includes a touch panel 11071 and at least one of other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 may include two parts: a touch detection device and a touch controller. Other input devices 11072 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.

[0463] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1101 may transmit the data to the processor 1110 for processing. Furthermore, the RF unit 1101 may send uplink data to the network-side device. Typically, the RF unit 1101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0464] The memory 1109 can be used to store software programs or instructions and various data. The memory 1109 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1109 may include a volatile memory or a non-volatile memory, or the memory 1109 may include a non-transient memory. Among them, the non-volatile memory or non-transient 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. The volatile memory may be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 1109 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0465] Processor 1110 may include one or more processing units. Optionally, processor 1110 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1110.

[0466] The terminal provided in the embodiment of the present application can implement each process implemented in the method embodiment of Figure 7 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0467] As shown in Figure 12, an embodiment of the present application also provides a network side device 1200, including a processor 1201 and a memory 1202, and the memory 1202 stores a program or instruction that can be run on the processor 1201. When the program or instruction is executed by the processor 1201, it implements the various steps of the method embodiment of Figure 7 or Figure 8 above and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0468] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the method of Figure 7 or Figure 8 and the various processes of the above-mentioned embodiments are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0469] The processor is the processor in the terminal or network-side device described in the above embodiments. 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. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0470] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes shown in Figure 7 or Figure 8 and the various method embodiments mentioned above, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0471] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0472] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes shown in Figure 7 or Figure 8 and the various method embodiments described above, and can achieve the same technical effects. To avoid repetition, they are not described here.

[0473] An embodiment of the present application also provides a communication system, including a terminal and a network-side device; wherein, the terminal is used to execute the various processes of the method embodiment as shown in Figure 7, and the network-side device is used to execute the various processes of the method embodiment as shown in Figure 8, and can achieve the same technical effect. To avoid repetition, they will not be repeated here.

[0474] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0475] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0476] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A random access method, comprising: The terminal obtains configuration information of random access resources; The terminal performs random access according to the configuration information of the random access resources; Wherein, the random access resources include at least one of the following: A first resource for contention-free random access (CFRA), and the first resource is different from the configured resources for CFRA; A first preamble associated with a second resource, and the first preamble is different from the configured preamble of the second resource; A second preamble associated with a third resource, and the second preamble is different from the configured preamble of the third resource; Wherein, the second resource is a physical random access channel (PRACH) resource for CFRA, and the third resource is a PRACH resource for at least contention-based random access (CBRA).

2. The method according to claim 1, wherein, When the random access resource is the first resource, the configuration information of the random access resource includes at least one of the following: First indication information for indicating whether the first resource is effective; Time domain information of the first resource; Frequency domain information of the first resource; Power information of the first resource; Association relationship information between a reference signal and the first resource; Association relationship information between the reference signal and the preamble; Association relationship information between the first resource and the preamble.

3. The method according to claim 2, wherein The terminal obtains the configuration information of the random access resources, including: When random access is triggered by physical layer signaling, the terminal performs at least one of the following: The terminal receives the physical layer signaling from the network side device, and the physical layer signaling contains the configuration information of the first resource; The terminal receives a PRACH resource configuration table from the network side device, or the terminal obtains a preset PRACH resource configuration table, and the PRACH resource configuration table contains first information for indicating the configuration information of the first resource.

4. The method according to claim 2, wherein, The terminal obtains the configuration information of the random access resources, including: When random access is triggered by high layer signaling, the terminal performs at least one of the following: The terminal receives a first signaling from the network side device, and the first signaling contains the configuration information of the first resource; The terminal receives a second signaling from the network side device, and the second signaling contains the configuration information of the first resource; Wherein, the second signaling is the signaling corresponding to the configured resource for CFRA, and the first signaling is a signaling different from the second signaling.

5. The method according to claim 1, wherein, When the random access resource is the first preamble, the first preamble satisfies at least one of the following: The first preamble is used for the request, activation or deactivation of a specific signal; The first preamble is a specific preamble assigned to CFRA; The first preamble is a specific preamble assigned to CBRA; The first preamble is a preamble other than the third preamble; A preamble obtained by processing a fourth preamble, where the fourth preamble is all preambles defined by the protocol or the preambles configured for CFRA; Wherein, the third preamble is at least one of the following: A preamble assigned to CBRA; A preamble configured together with CBRA and assigned to CFRA; Preamble for System Information SI request.

6. The method according to claim 5, wherein The terminal performs random access according to the configuration information of the random access resource, including: When the resources of the second resource and the third resource do not overlap, the terminal performs random access on the second resource according to at least one of the third preamble and the first preamble.

7. The method according to claim 5, wherein, The terminal performs random access according to the configuration information of the random access resource, including: When there is resource overlap between the second resource and the third resource, the terminal performs any one of the following: Performing random access on the non-overlapping second resource according to at least one of the third preamble and the first preamble; Performing random access on the overlapping second resource according to the preamble configured with CBRA and assigned to CFRA; Performing random access on the overlapping second resource according to the preamble configured with CBRA and assigned to CFRA, or when there is no preamble configured with CBRA and assigned to CFRA, performing random access according to at least one of the other third preambles and the first preamble.

8. The method according to claim 1, wherein When the random access resource is the second preamble, the second preamble satisfies at least one of the following: The second preamble is used for the request, activation or deactivation of a specific signal; The first preamble is a specific preamble assigned to CFRA; The first preamble is a preamble other than the third preamble; The preamble obtained by processing the fourth preamble, where the fourth preamble is all preambles defined by the protocol or the preambles configured for CFRA; Wherein, the third preamble is at least one of the following: The preamble assigned to CBRA; The preamble configured with CBRA and assigned to CFRA; The preamble for SI request.

9. The method according to claim 8, wherein, The method further includes at least one of the following: The terminal receives a third signaling from the network side device, and the third signaling contains the mapping relationship between the second preamble and the reference signal; The terminal determines the mapping relationship between the second preamble and the reference signal according to the mapping relationship between the third preamble and the reference signal.

10. The method according to claim 5 or 8, wherein The terminal obtains the configuration information of the random access resource, including: The terminal receives a fourth signaling from the network side device; Wherein, the fourth signaling contains the configuration information of the first preamble or the configuration information of the second preamble, and the fourth signaling includes at least one of the following: Higher layer signaling; Medium Access Control MAC layer signaling; Physical layer signaling.

11. The method according to any one of claims 1 to 10, wherein The terminal performs random access according to the configuration information of the random access resource, including: When the first condition is satisfied, the terminal performs random access according to the configuration information of the random access resource; Wherein, the first condition includes at least one of the following: The random access resource at least contains resources for CBRA; The preambles in the random access resource at least contain one preamble for CFRA; The random access resource at least contains resources for CFRA; The preambles in the random access resource at least contain one preamble for CBRA; The random access satisfies a specific scenario; The measurement result of the downlink signal by the terminal is greater than or equal to a preset threshold; The terminal has the ability to select the random access resource.

12. The method according to claim 1, wherein The method further includes at least one of the following: The terminal sends, to the network-side device, the ability of the terminal to select the random access resource through radio resource control (RRC) signaling; The terminal sends, to the neighboring cell through the current serving cell, the ability of the terminal to select the random access resource; The terminal sends, to the network-side device through the uplink signal, the ability of the terminal to select the random access resource.

13. A random access method, including: The network-side device sends configuration information of the random access resource to the terminal; Wherein, the random access resource includes at least one of the following: A first resource for CFRA, and the first resource is different from the configured resource for CFRA; A first preamble associated with a second resource, and the first preamble is different from the configured preamble of the second resource; A second preamble associated with a third resource, and the second preamble is different from the configured preamble of the second resource; Wherein, the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource at least for CBRA.

14. The method according to claim 13, wherein, When the random access resource is the first resource, the configuration information of the random access resource includes at least one of the following: A first indication information for indicating whether the first resource is effective; The time domain information of the first resource; The frequency domain information of the first resource; The power information of the first resource; The association relationship information between the reference signal and the first resource; The association relationship information between the reference signal and the preamble; The association relationship information between the first resource and the preamble.

15. The method according to claim 14, wherein, The network-side device sends the configuration information of the random access resource to the terminal, including: When the random access is triggered by a physical layer signaling, the network-side device performs at least one of the following: The network-side device sends the physical layer signaling to the terminal, and the physical layer signaling contains the configuration information of the first resource; The network-side device sends a PRACH resource configuration table to the terminal, and the PRACH resource configuration table contains first information for indicating the configuration information of the first resource.

16. The method according to claim 14, wherein The network-side device sends the configuration information of the random access resource to the terminal, including: When the random access is triggered by a high-layer signaling, the network-side device performs at least one of the following: The network-side device sends a first signaling to the terminal, and the first signaling contains the configuration information of the first resource; The network-side device sends a second signaling to the terminal, and the second signaling contains the configuration information of the first resource; Wherein, the second signaling is the signaling corresponding to the configured resource for CFRA, and the first signaling is a signaling different from the second signaling.

17. The method according to claim 13, wherein, When the random access resource is the first preamble, the first preamble satisfies at least one of the following: The first preamble is used for the request, activation or deactivation of a specific signal; The first preamble is a specific preamble assigned to CFRA; The first preamble is a specific preamble assigned to CBRA; The first preamble is a preamble other than the third preamble; A preamble obtained by processing a fourth preamble, where the fourth preamble is all preambles defined by the protocol or a preamble configured for CFRA; Wherein, the third preamble is at least one of the following: A preamble assigned to CBRA; A preamble configured with CBRA and assigned to CFRA; A preamble for SI request.

18. The method according to claim 13, wherein, When the random access resource is the second preamble, the second preamble satisfies at least one of the following: The second preamble is used for the request, activation or deactivation of a specific signal; The first preamble is a specific preamble assigned to CFRA; The first preamble is a preamble other than the third preamble; A preamble obtained by processing a fourth preamble, where the fourth preamble is all preambles defined by the protocol or a preamble configured for CFRA; Wherein, the third preamble is at least one of the following: A preamble assigned to CBRA; A preamble configured with CBRA and assigned to CFRA; A preamble for SI request.

19. The method according to claim 18, wherein, The method further includes at least one of the following: The network side device sends a third signaling to the terminal, and the third signaling contains the mapping relationship between the second preamble and a reference signal; The network side device determines the mapping relationship between the second preamble and a reference signal according to the mapping relationship between the third preamble and a reference signal.

20. The method according to claim 17 or 18, wherein The network side device sends configuration information of a random access resource to the terminal, including: The network side device sends a fourth signaling to the terminal; Wherein, the fourth signaling contains configuration information of the first preamble or configuration information of the second preamble, and the fourth signaling includes at least one of the following: High layer signaling; MAC layer signaling; Physical layer signaling.

21. The method according to claim 13, wherein The method further includes at least one of the following: The network side device receives from the terminal via RRC signaling that the terminal has the ability to select the random access resource; The network side device receives from a terminal in the current serving cell that the terminal has the ability to select the random access resource and sends it to a neighboring cell; The network side device receives from the terminal via an uplink signal that the terminal has the ability to select the random access resource.

22. A random access device, comprising: A first transceiver unit and a first processing unit; The first transceiver unit is used to obtain configuration information of a random access resource; The first processing unit is used to perform random access according to the configuration information of the random access resource; Wherein, the random access resource includes at least one of the following: A first resource for CFRA, and the first resource is different from the resource configured for CFRA; A first preamble associated with a second resource, and the first preamble is different from the preamble configured for the second resource; A second preamble associated with a third resource, and the second preamble is different from the preamble configured for the third resource; Wherein, the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource for at least CBRA.

23. The apparatus according to claim 22, wherein, When the random access resource is the first resource, the configuration information of the random access resource includes at least one of the following: First indication information for indicating whether the first resource is effective; Time domain information of the first resource; Frequency domain information of the first resource; Power information of the first resource; Association relationship information between the reference signal and the first resource; Association relationship information between the reference signal and the preamble; Association relationship information between the first resource and the preamble.

24. The device according to claim 23, wherein, The first transceiver unit is further configured to: when random access is triggered by a physical layer signaling, perform at least one of the following: Receive the physical layer signaling from the network side device, where the physical layer signaling includes the configuration information of the first resource; Receive a PRACH resource configuration table from the network side device, or obtain a preset PRACH resource configuration table, where the PRACH resource configuration table includes first information for indicating the configuration information of the first resource.

25. The apparatus according to claim 23, wherein, The first transceiver unit is further configured to: when random access is triggered by a high layer signaling, perform at least one of the following: Receive a first signaling from the network side device, where the first signaling includes the configuration information of the first resource; Receive a second signaling from the network side device, where the second signaling includes the configuration information of the first resource; Wherein, the second signaling is a signaling corresponding to the configured resource for CFRA, and the first signaling is a signaling different from the second signaling.

26. The apparatus according to claim 22, wherein, When the random access resource is the first preamble, the first preamble satisfies at least one of the following: The first preamble is used for the request, activation or deactivation of a specific signal; The first preamble is a specific preamble assigned to CFRA; The first preamble is a specific preamble assigned to CBRA; The first preamble is a preamble other than the third preamble; A preamble obtained by processing a fourth preamble, where the fourth preamble is all preambles defined by the protocol or preambles configured for CFRA; Wherein, the third preamble is at least one of the following: A preamble assigned to CBRA; A preamble configured together with CBRA and assigned to CFRA; A preamble for system information SI request.

27. The apparatus according to claim 26, wherein, The first processing unit is further configured to: when the resources of the second resource and the third resource do not overlap, perform random access on the second resource according to at least one of the third preamble and the first preamble.

28. The apparatus according to claim 26, wherein, The first processing unit is further configured to: when there is resource overlap between the second resource and the third resource, perform any one of the following: Perform random access on the non-overlapping second resource according to at least one of the third preamble and the first preamble; Perform random access on the overlapping second resource according to a preamble configured together with CBRA and assigned to CFRA; On the overlapping second resource, perform random access according to a preamble configured with CBRA and allocated to CFRA, or in the absence of a preamble configured with CBRA and allocated to CFRA, perform random access according to at least one of the other third preambles and the first preamble.

29. The apparatus according to claim 22, wherein, In the case where the random access resource is the second preamble, the second preamble satisfies at least one of the following: The second preamble is used for the request, activation, or deactivation of a specific signal; The first preamble is a specific preamble allocated to CFRA; The first preamble is a preamble other than the third preamble; A preamble obtained by processing a fourth preamble, where the fourth preamble is all preambles defined by the protocol or preambles configured for CFRA; Wherein, the third preamble is at least one of the following: A preamble allocated to CBRA; A preamble configured with CBRA and allocated to CFRA; A preamble for SI request.

30. A random access device, comprising: A second transceiver unit, configured to send configuration information of a random access resource to a terminal; Wherein, the random access resource includes at least one of the following: A first resource for CFRA, where the first resource is different from the configured resource for CFRA; A first preamble associated with a second resource, where the first preamble is different from the configured preamble of the second resource; A second preamble associated with a third resource, where the second preamble is different from the configured preamble of the second resource; Wherein, the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource for at least CBRA.

31. The apparatus according to claim 30, wherein, In the case where the random access resource is the first resource, the configuration information of the random access resource includes at least one of the following: First indication information, used to indicate whether the first resource is effective; Time domain information of the first resource; Frequency domain information of the first resource; Power information of the first resource; Association relationship information between a reference signal and the first resource; Association relationship information between the reference signal and the preamble; Association relationship information between the first resource and the preamble.

32. The apparatus according to claim 31, wherein, The second transceiver unit is further configured to: in the case where random access is triggered by a physical layer signaling, perform at least one of the following: Send the physical layer signaling to the terminal, where the physical layer signaling contains the configuration information of the first resource; Send a PRACH resource configuration table to the terminal, where the PRACH resource configuration table contains first information, and the first information is used to indicate the configuration information of the first resource.

33. A terminal, comprising a processor, a memory, and a program or instruction stored on the memory and executable on the processor, where when the program or instruction is executed by the processor, the steps of the method according to any one of claims 1 to 12 are implemented.

34. A network-side device, comprising a processor, a memory, and a program or instruction stored on the memory and executable on the processor, wherein when the program or instruction is executed by the processor, the steps of the method according to any one of claims 13 to 21 are implemented.

35. A readable storage medium, on which a program or instruction is stored, wherein when the program or instruction is executed by a processor of a terminal, the steps of the method according to any one of claims 1 to 21 are implemented.

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