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

Abstract

The invention discloses a random access method, apparatus and device, and a readable storage medium. The method comprises the following steps: a terminal obtains configuration information of a random access resource; the terminal executes random access according to the configuration information of the random access resource; wherein the random access resource comprises at least one of the following items: a first resource used for the CFRA, and the first resource is different from a configured resource used for the CFRA; a first preamble associated with a second resource, the first preamble being different from a configured preamble of the second resource; 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 used for the CFRA, and the third resource is at least a PRACH resource used for the CBRA.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a random access method, apparatus, device, and readable storage medium. Background Art

[0002] In a communication network, many terminals may need to use the random access process for cell handover, beam handover, or uplink resynchronization simultaneously or within a short period. For example, in a Non-Terrestrial Network (NTN), satellite handover 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 failures. Summary of the Invention

[0003] Embodiments of this 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 conflicts.

[0004] In a first aspect, a random access method is provided, including:

[0005] A terminal obtains configuration information of random access resources;

[0006] The terminal performs random access according to the configuration information of the random access resources;

[0007] Wherein, the random access resources include at least one of the following:

[0008] A first resource for CFRA, where the first resource is different from the configured resource for CFRA;

[0009] A first preamble associated with a second resource, where the first preamble is different from the configured preamble of the second resource;

[0010] A second preamble associated with a third resource, where the second preamble is different from the configured preamble of the third resource;

[0011] Wherein, the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource for at least CBRA.

[0012] In a second aspect, a random access method is provided, including:

[0013] A network-side device sends configuration information of random access resources to a terminal;

[0014] Wherein, the random access resources include at least one of the following:

[0015] The first resource for CFRA, where the first resource is different from the configured resource for CFRA;

[0016] The first preamble associated with the second resource, where the first preamble is different from the configured preamble of the second resource;

[0017] The second preamble associated with the third resource, where the second preamble is different from the configured preamble of the second resource;

[0018] Wherein, the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource for at least CBRA.

[0019] In a third aspect, a random access device is provided, including: a first transceiver unit and a first processing unit;

[0020] The first transceiver unit is configured to obtain the configuration information of the random access resource;

[0021] The first processing unit is configured to perform random access according to the configuration information of the random access resource;

[0022] Wherein, the random access resource includes at least one of the following:

[0023] The first resource for CFRA, where the first resource is different from the configured resource for CFRA;

[0024] The first preamble associated with the second resource, where the first preamble is different from the configured preamble of the second resource;

[0025] The second preamble associated with the third resource, where the second preamble is different from the configured preamble of the third resource;

[0026] Wherein, the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource for at least CBRA.

[0027] In a fourth aspect, a random access device is provided, including:

[0028] A second transceiver unit, configured to send the configuration information of the random access resource to the terminal;

[0029] Wherein, the random access resource includes at least one of the following:

[0030] The first resource for CFRA, where the first resource is different from the configured resource for CFRA;

[0031] The first preamble associated with the second resource, where the first preamble is different from the configured preamble of the second resource;

[0032] The second preamble associated with the third resource, where the second preamble is different from the configured preamble of the second resource;

[0033] wherein, the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource for at least CBRA.

[0034] In a fifth aspect, a terminal is provided, which includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0035] In a sixth aspect, a network-side device is provided, including: a processor, a memory, and a program or instruction stored on the memory and capable of running on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect or the second aspect are implemented.

[0036] In a seventh aspect, a communication system is provided, including 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.

[0037] In an eighth aspect, a readable storage medium is provided. A program or instruction is stored on the readable storage medium. When the program or instruction is executed by the processor of the terminal, the steps of the method described in the first aspect or the second aspect are implemented.

[0038] In a ninth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement the steps of the method described in the first aspect or the second aspect.

[0039] In a tenth aspect, a computer program / program product is provided. The computer program / program product is stored in a non-transitory storage medium. 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.

[0040] In the embodiments of the present application, the random access resources for performing random access include at least one of the following: a first resource for CFRA, where the first resource is different from the configured resources 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 third resource; where the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource for at least CBRA, that is, on the basis of traditional random access resources, additional preambles (the first preamble, the second preamble) or additional random access resources (the first resource) are introduced, so as to enhance the capacity of random access resources in the random access process, reduce the latency of random access, reduce the conflicts of random access, and improve the success rate of random access. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is one of the schematic diagrams of non-competitive random access;

[0042] Figure 2 is another schematic diagram of non-competitive random access;

[0043] Figure 3 is one of the schematic diagrams of the mapping between SSB and RO;

[0044] Figure 4 is another schematic diagram of the mapping between SSB and RO;

[0045] Figure 5 is a third schematic diagram of the mapping between SSB and RO;

[0046] Figure 6 is the schematic diagram of the architecture of the wireless communication system according to the embodiments of the present application;

[0047] Figure 7 is one of the schematic diagrams of the flowchart of the random access method provided by the embodiments of the present application;

[0048] Figure 8 is another schematic diagram of the flowchart of the random access method provided by the embodiments of the present application;

[0049] Figure 9 is one of the block diagrams of the random access device provided by the embodiments of the present application;

[0050] Figure 10 is another block diagram of the random access device provided by the embodiments of the present application;

[0051] Figure 11 is the schematic diagram of the terminal provided by the embodiments of the present application;

[0052] Figure 12 It is a schematic diagram of a network-side device provided by an embodiment of the present application. Specific implementation manners

[0053] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0054] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances 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 usually of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0055] The term "indication" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly tells the receiver specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0056] It should be noted that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, 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 this application are often used interchangeably. The described technology can be used not only in the systems and radio technologies mentioned above, but also in other systems and radio technologies. The following description describes the New Radio (NR) system for illustrative purposes, and the NR term is used in most of the following descriptions. However, these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6G) communication system.

[0057] Currently, in the Fourth Generation (4G) or Fifth Generation (5G) mobile communication network, for the Cell-Free Random Access (CFRA) triggered by the higher layer for cell handover and beam failure recovery, random access can only be performed by the method of additionally configuring the Random Access CHannel Occasion (RO), and the Physical Random Access Channel (PRACH) configuration table is used. This not only adds additional resource overhead, but also requires a large number of user accesses, resulting in a large access delay. For the CFRA of the Physical Downlink Control CHannel (PDCCH) order, new RO resources cannot be configured, and only the Contention Based Rach Access (CBRA) RO resources can be used.

[0058] To enable those skilled in the art to better understand the embodiments of this application, the following explanations are provided first.

[0059] 1. Regarding the purpose and events of random access.

[0060] There are many purposes of random access. For example, the random access triggered by PDCCH order is mainly for the terminal (e.g., User Equipment (UE)) to obtain uplink time synchronization. Another example is that when the UE establishes an initial radio link, the user identifier, such as the Cell-Radio Network Temporary Identifier (C-RNTI), can be obtained through the random access process.

[0061] The random access process is usually triggered by one of several types of events shown in Table 1.

[0062] Table 1

[0063]

[0064]

[0065] 2. Regarding the random access process.

[0066] In the related art, the random access process can be a contention-based random access process or a non-contention-based random access process.

[0067] The contention-based four-step random access procedure is as follows: The UE first sends a first message (Msg1) to the network, which contains a preamble; after the network detects the preamble, it sends a second message (Msg2) or a Random Access Response (RAR) message, which contains the number of the preamble detected by the network and the uplink radio resources allocated to the UE for sending the third message (Msg3); after receiving Msg2, the UE confirms that at least one of the preamble numbers carried in Msg2 is the same as the preamble number 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 contention resolution information is the same as that sent by the UE in Msg3, and the four-step random access is completed. The network includes uplink grant (UL grant) information in the RAR to indicate the Msg3 PUSCH scheduling information, and includes information such as Random Access Preamble Identifier (RACHpreamble ID, RAPID), Temporary Cell Radio Network Temporary Identifier (Temporary Cell RNTI, TC-RNTI), Timing Advance (TA), etc. If the network does not receive the Msg3 PUSCH, it can schedule the retransmission of the Msg3 PUSCH in the PDCCH scrambled with the TC-RNTI.

[0068] For the contention-based random access procedure, different UEs randomly select preambles for transmission. In this way, different UEs may select the same preamble to send on the same time-frequency radio resources (e.g., RO resources). This situation can be understood as a preamble collision of the UEs. In this case, different UEs will receive the same RAR, and then different UEs will perform the transmission of Msg3 PUSCH according to the scheduling information in the RAR UL grant. Since the related technology does not support the repeated transmission of Msg3 PUSCH, the network can only decode the PUSCH (containing contention resolution information) sent by one UE on a Msg3 PUSCH scheduling resource. Therefore, the network will include the contention resolution information received in Msg3 in Msg4. If the contention resolution information in the Msg4 received by the UE matches the contention resolution information sent by the UE in the Msg3 PUSCH, the UE considers the contention resolution successful. If not, it is considered that the contention resolution is unsuccessful. If the contention resolution is unsuccessful, the UE reselects the RACH transmission resource and performs the transmission of the Physical Random Access Channel (PRACH) for the next random access attempt.

[0069] In non-competitive random access, the preamble is allocated by the base station, and 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. So 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-competitive random access process is as follows:

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

[0071] a) Handover: The allocated preamble is carried in the Mobility Control Info information element (IE) sent by the source base station;

[0072] b) Downlink data arrival: When downlink data arrives at the base station, the base station instructs the UE to initiate RA through the downlink control information (DCI) on the PDCCH, and the allocated preamble is carried in the DCI;

[0073] c) Non-Standalone (NSA) networking: When adding a New Radio (NR) cell in NSA, the base station instructs the UE to initiate RA through the DCI on the PDCCH, and the allocated preamble is carried in the DCI;

[0074] Step 2: The random access preamble sends Msg1.

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

[0076] Step 3: Random access response Msg2.

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

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

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

[0080] c) NSA networking: The random access response must contain 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 in Msg1, the UE considers the random access process successful and sends the PUSCH scheduled by the RAR. Otherwise, the preamble transmission counter (PREAMBLE_TRANSMISSION_COUNTER) is incremented by one, and a random access attempt is initiated again. The random access resource is selected again, and Msg1 is sent.

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

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

[0084] The PDCCH order process has been in use in related technologies. The basic idea of the PDCCH order is that when the network side detects uplink out-of-sync and there is data to be sent in the downlink MAC buffer, it notifies the terminal to initiate a RA request to try to restore the connection. The PDCCH order is an important type of event defined in the protocol to trigger RA.

[0085] Generally speaking, the PDCCH order is that the network side realizes resynchronization with the UE through the PDCCH order. Specifically, it is indicated by the DCI format (format) 1-0 scrambled with C-RNTI. When the frequency domain assignment field (Frequency domain assignment filed) is all 1 bits, this DCI foramt 1-0 does not schedule the PDSCH, but indicates that the UE needs to send a random access. Information such as the allocated preamble index and the transmission carrier indication is indicated in the DCI. The base station sends DCI 1_0 on the SSB beam index where the terminal resides to trigger the PDCCH order. The PDCCH order triggers the use of a dedicated RACH preamble to enable the non-competitive access process, as Figure 2 shown.

[0086] 2) Regarding RRC-triggered CFRA (e.g., handover).

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

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

[0089] 3. Regarding the synchronization signal and the physical broadcast channel (PBCH).

[0090] To enable the UE to search for reasonable cells and synchronize with the selected cells, the network usually needs to broadcast synchronization signals and provide certain primary information about the cells. In NR, the UE performs cell search through synchronization signals (e.g., Primary Synchronization Signal (PSS) or Secondary Synchronization Signal (SSS)) to obtain the Physical Cell Identifier (PCI) of the cell and downlink frequency synchronization. Then the UE receives the PBCH and reads the system information (e.g., Master Information Block (MIB)) to obtain the most important system information of the cell and information on how to receive other system information (e.g., System Information Block (SIB) 1). And after receiving the PBCH, the UE can obtain the downlink timing information (including system frame number, position of subframe 0, etc.) of the cell, thus obtaining downlink time synchronization. Then by receiving other system information (including SIB1 and SI messages), the UE can obtain information on how the cell works and how to access the cell. Next, the UE initiates a random access procedure to obtain uplink synchronization and establish an RRC connection with the network.

[0091] The synchronization signal can include at least one of the following: PSS, SSS, and PBCH. The most important system information, also known as the Master Information Block, is carried in the PBCH. In NR, the concept of SSB appears, which is composed of the original PSS, SSS, PBCH, and Demodulation Reference Signal (DMRS) within 4 consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols. It occupies a total of 240 subcarriers (20 Physical Resource Blocks (PRBs)) in the frequency domain, numbered from 0 to 239.

[0092] 4. Mapping rules from SSB to RO in 5G NR.

[0093] The configuration parameters of the PRACH resources and the 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 Opportunity, or PRACHOccasion, abbreviated as RO) in the time domain position for transmitting the PRACH. At a certain moment, the number of ROs that can perform FDM 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 PRACH Configuration Index and the frequency domain resources configured by the parameter msg1-FDM. The PRACH frequency domain resource n_RA ∈ {0, 1, …, M - 1}, where M is equal to the higher layer parameter msg1-FDM. At the initial access, the PRACH frequency domain resource n_RA is numbered in ascending order starting from the RO resource with the lowest frequency within the initial active uplink bandwidth part. Otherwise, the PRACH frequency domain resource n_RA is numbered in ascending order starting from the RO resource with the lowest frequency within the active uplink bandwidth part. For example, in Figure 3 where the number of ROs for FDM at a certain moment is 8 (msg1-FDM = 8), the RO resources are numbered in ascending order of frequency as RO#0 to RO#7.

[0095] In NR, there is an association relationship between the RO and the actually transmitted SSB. The RO is associated with the SSB in the order of frequency domain (from low frequency to high frequency) first and then time domain. One SSB may be associated with multiple consecutive ROs, or multiple SSBs may be associated with 1 RO (in this case, different SSBs correspond to different Preambles), which is configured by the network through the parameters of the number of SSBs in each RACH and the number of competing Preambles codes in each SSB (ssb-perRACH-OccasionAndCB-PreamblesPerSSB). After all SSBs are associated with ROs in one round, it constitutes an SSB-RO mapping cycle. The association period from one SSB to RO may contain one or more SSB-RO mapping cycles. The association pattern period from one SSB to RO may contain one or more SSB-RO association periods, and the mapping from SSB to RO is repeated in the association pattern period, and the maximum association pattern period is 160 ms.

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

[0097] Take Figure 3 as an example. The number of ROs of FDM at a certain moment is 8, and the number of actually transmitted SSBs is 4, namely SSB#0, SSB#1, SSB#2, SSB#3, and each SSB is associated with 2 ROs. If the UE determines to send a PRACH or Msg1 on the RO corresponding to SSB#0, then the UE selects one RO from RO#0 and RO#1 to send the PRACH.

[0098] Take Figure 4For example, the number of ROs of FDM at a certain moment is 2, and the number of actually transmitted SSBs is 8, namely SSB#0, SSB#1, ……, SSB#7. Every 2 SSBs are associated with 1 RO. When multiple SSBs share one RO, the Preamble sets associated with these multiple SSBs are different, that is, the same Preamble cannot belong to the Preamble sets associated with different SSBs at the same time: taking Figure 4 RO#0 in it as an example, RO#0 has a total of 60 Preambles. Among them, the Preambles with index 0 to 29 are associated with SSB#0, and the Preambles with index 30 to 59 are associated with SSB#1.

[0099] Before the UE sends a PRACH, it first selects an SSB with an RSRP higher than the threshold according to the RSRP of the received beam; if the RSRPs of multiple SSBs are higher than the threshold, the terminal can select any SSB with an RSRP higher than the threshold; when there is no SSB with an RSRP higher than the threshold, the UE selects an SSB based on the implementation.

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

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

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

[0103] In the related art, PRACH repeated transmission is introduced to enhance uplink coverage. For PRACH repeated transmission, the UE needs to repeatedly transmit the Preamble on multiple ROs at different time domain positions associated with the same SSB, and the number of repetitions can be {2, 4, 8}. After the UE determines the PRACH repetition number, it needs to determine the RO set, and the number of valid ROs in the RO set is equal to the PRACH repetition number. Assume that the PRACH repetition number is N1, and the RO 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 as the starting RO, at the same frequency position, and have the same associated Preamble set. For example, assume that the PRACH repetition number is 2. For SSB#0, the RO group can be determined, as Figure 5 shown. The horizontal axis represents time, and the vertical axis represents 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). The SSB#0 in the first RO group is 1 st starting RO, the SSB#0 in the second RO group is 2 nd starting RO, the SSB#0 in the third RO group is 3 rd starting RO, and the SSB#0 in the fourth RO group is 4 th starting RO.

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

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

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

[0107] The CBRARO in this application can be used to indicate the PRACH time-frequency resources that support at least CBRA. The CFRARO can be used to indicate the PRACH time-frequency resources specifically configured for CFRA.

[0108] The association between the reference signal and the PRACH sequence in this application can also refer to allocating or configuring the PRACH sequence for the reference signal, or allocating or configuring the corresponding reference signal for the PRACH sequence, or the mapping from the reference signal to the PRACH sequence, where the PRACH sequence can be a preamble.

[0109] Figure 6 The block diagram of a wireless communication system to which the embodiments of this application can be applied is shown. The wireless communication system includes a terminal 61 and a network-side device 62. Among them, the terminal 61 can be a mobile phone, a tablet personal computer, a 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, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), an ATM, or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be called a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip, or a vehicle unit, etc. In addition to the above terminal devices, the terminal involved in this application can also be a chip inside 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 embodiments of this application.

[0110] The network - side device 62 may include an access network device or a core network device. Among them, 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, etc. The base station may be referred to as Node B (NB), evolved Node B (eNB), next - generation Node B (gNB), New Radio Node B (NR Node B), access point, relay base station (RBS), serving base station (SBS), base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), home Node B (HNB), home evolved Node B, transmission reception point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0111] The core network device 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 (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), Binding Support Function (BSF), Application Function (AF), etc. It should be noted that in the embodiments of this application, only the core network devices in the NR system are taken as examples for introduction, and the specific types of core network devices are not limited.

[0112] The following will, with reference to the accompanying drawings, through some embodiments and their application scenarios, elaborate in detail on the random access method, apparatus, device, and readable storage medium provided by the embodiments of this application.

[0113] See Figure 7 , the embodiments of this application provide a random access method, and the specific steps include: step 701 and step 702.

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

[0115] It can be understood that the random access resources in this application may include at least one of the following: random access sequences (e.g., preambles), random access time-frequency resources (e.g., RO).

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

[0117] Wherein, the random access resources include at least one of the following:

[0118] 1) The first resource for CFRA, and the first resource is different from the configured resources for CFRA;

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

[0120] In some embodiments, for CFRA triggered by physical layer signaling (e.g., PDCCH order), in addition to using the CBRA RO, the first resource (i.e., the newly configured CFRA RO) can also be used. On the first resource, all preambles can be used.

[0121] For another example, for CFRA triggered by high-layer signaling (e.g., dedicated RRC signaling, MAC-CE, or MAC PDU), more or more flexible first resources can be configured.

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

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

[0124] Optionally, the second resource may include a CFRA RO. In the related art, the RO used for the RRC-triggered CFRA may be a separately configured RO (i.e., CFRARO) or the RO reused for CBRA, and the PDCCH command-triggered CFRA can only use the CBRA RO. Additionally, the preamble for CFRA on the CBRA RO is different from the preamble for CBRA. For the case of using a specially configured CFRA RO, an additional preamble is considered to be introduced to increase the capacity.

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

[0126] It can be understood that the second preamble may be a newly configured preamble (i.e., additional preamble) for the third resource (e.g., CBRA RO).

[0127] Optionally, the third resource may include a CBRA RO. In the related art, the PDCCH order-triggered CFRA can only use the CBRA RO. For the RRC-triggered CFRA, if the random access resource for CFRA is not configured, or if the random access resource for CFRA is configured but the RSRP of the associated SSB or CSI-RS is lower than the RSRP threshold (i.e., there is no available associated SSB or CSI-RS), the network instructs the UE to initiate CBRA access. For this case of using the CBRA RO for random access, increasing the capacity by the second preamble can also be considered.

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

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

[0130] 1) High-layer signaling;

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

[0132] 2) MAC layer signaling;

[0133] Optionally, the MAC layer signaling includes, but is not limited to, the MAC CE or MAC 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 PDCCH commands.

[0136] In an 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 effective;

[0138] For example, the first indication information is used to indicate whether a newly configured CFRA RO (i.e., 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 partial 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 partial 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 a 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, power boost.

[0146] 5) Association relationship information between a reference signal (such as an SSB) and the first resource (such as an additional CFRA RO);

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

[0148] It can be understood that if the association relationship information is not included in the configuration information, it means that the association relationship between the reference signal (such as an SSB) and the first resource (such as an additional CFRARO) can default to the SSB-RO association relationship under CBRA.

[0149] 6) Association relationship information between the reference signal and the preamble;

[0150] For example, the association relationship information is used to indicate the association relationship between a new reference signal (e.g., SSB) and a preamble existing on a first resource (e.g., an additional CFRARO). For example, one preamble can be mapped to two SSBs.

[0151] 7) The association relationship information between the first resource (e.g., an additional CFRARO) 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;

[0154] Optionally, the time domain offset is used to indicate at least one of the following: the time domain interval between the first resource (e.g., an additional CFRARO) and the CBRARO; the time domain interval between the first resource (e.g., an additional CFRA RO) and the configured resource for CFRA (such as a 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 (e.g., an additional CFRARO).

[0157] 3) The time slot of the PRACH;

[0158] For example, the time slot of the PRACH associated with the first resource (e.g., an additional CFRARO).

[0159] 4) The frame of the PRACH;

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

[0161] 5) The period or configured period of the PRACH;

[0162] 6) The 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 starting symbol of the first resource (e.g., an additional CFRA RO) in the RACH time 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 between the first resource (e.g., additional CFRA RO) and the CBRA RO; the frequency-domain interval between the first resource (i.e., additional CFRARO) and the configured resource for CFRA (such as the conventional CFRARO).

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

[0170] For example, the number of additional CFRAROs existing in FDM at a certain time point;

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

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

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

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

[0175] 1) 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;

[0176] Optionally, the physical layer signaling may be a PDCCH command. Further, bits or overhead indicating the configuration information of the first resource are newly added to 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 the first resource (e.g., additional CFRA RO) with the same frequency-domain position but a time-domain difference of the time-domain offset based on the time-domain offset and the position of the latest CBRARO.

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

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

[0180] Table 2 shows 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 extra bits or overhead in the DCI of the PDCCH command.

[0181] Table 2: PRACH resource configuration table.

[0182]

[0183] It should be noted that the additional subframe number in Table 2 above is new content relative to the traditional PRACH resource configuration table.

[0184] In an implementation manner of this application, the terminal obtains configuration information of random access resources, including:

[0185] In the case where random access is triggered by high-layer signaling, the terminal performs at least one of the following:

[0186] 1) The terminal receives a first signaling from a network-side device, and the first signaling contains configuration information of the first resource;

[0187] 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 a common RACH configuration (rach-ConfigGeneric). Traditional random access resources can be configured through RACH-ConfigDedicated or BeamFailureRecoveryConfig with a rach-ConfigGeneric.

[0188] Optionally, when the network does not configure rach-ConfigGeneric in RACH-ConfigDedicated or BeamFailureRecoveryConfig, this first signaling is a new signaling introduced for the first resource.

[0189] For example, there is a parameter rach-ConfigGeneric in the RACH-ConfigDedicated or BeamFailureRecoveryConfig domain. If this parameter is not configured or missing in practice, new random access parameters are used.

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

[0191] Optionally, the first signaling can be used simultaneously with some configurations of rach-ConfigGeneric in RACH-ConfigDedicated or BeamFailureRecoveryConfig in the related art.

[0192] For example, the power determination related parameters of rach-ConfigGeneric in RACH-ConfigDedicated or BeamFailureRecoveryConfig can be directly used for the first resource.

[0193] 2) The terminal receives a second signaling from the network side device, and the configuration information of the first resource is included in the second signaling;

[0194] 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.

[0195] For example, the second signaling can be rach-ConfigGeneric in RACH-ConfigDedicated or BeamFailureRecoveryConfig in the related art.

[0196] Optionally, the high-layer signaling includes but is not limited to dedicated RRC signaling, MAC CE, MAC PDU, etc.

[0197] In an embodiment of the present application, when the random access resource is the first preamble, the first preamble satisfies at least one of the following:

[0198] 1) The first preamble is used for the request, activation or deactivation of a specific signal;

[0199] Optionally, the specific signal includes but is not limited to broadcast signals.

[0200] 2) The first preamble is a specific preamble assigned to CFRA;

[0201] For example, in addition to supporting the configuration together with CBRA and the preamble assigned to CFRA, an additional first preamble is configured for CFRA.

[0202] 3) The first preamble is a specific preamble assigned to CBRA;

[0203] Optionally, the specific preambles assigned to CBRA include: preambles additionally assigned to preamble group A or group B.

[0204] 4) The first preamble is a preamble other than the third preamble;

[0205] 5) The preamble (or set of preambles) obtained by processing the fourth preamble, where the fourth preamble is all preambles defined by the protocol or preambles configured for CFRA;

[0206] The above processing includes but is not limited to scrambling, spreading, or interleaving, etc.

[0207] For example, the fourth preamble can be 64 preambles in NR or preambles preconfigured for CFRA.

[0208] Among them, the third preamble is at least one of the following:

[0209] 1) The preamble assigned to CBRA;

[0210] 2) The preamble configured together with CBRA and assigned to CFRA;

[0211] 3) The preamble used for System Information (SI) requests.

[0212] In an embodiment of the present application, the terminal performs random access according to the configuration information of the random access resource, including:

[0213] When the second resource (e.g., CFRA RO) and the third resource (e.g., CBRA RO) do not overlap, the terminal performs random access on the second resource (e.g., CFRA RO) according to at least one of the third preamble and the first preamble.

[0214] Optionally, non - overlap includes at least one of the following:

[0215] 1) The second resource (e.g., CFRA RO) and the third resource (e.g., CBRA RO) overlap in the time domain and are located at different positions in the frequency domain (e.g., the starting points of the frequency domain positions differ by at least the size of 8 frequency domain resources).

[0216] 2) The second resource (e.g., CFRA RO) and the third resource (e.g., CBRA RO) can overlap in the frequency domain and are located at different positions in the time domain (e.g., in different radio frames or different sub - frames of the same radio frame).

[0217] 3) The second resource (e.g., CFRARO) and the third resource (e.g., CBRA RO) do not overlap in the time-frequency domain.

[0218] In an embodiment of the present application, the terminal performs random access according to the configuration information of the random access resource, including:

[0219] In the 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:

[0220] 1) Perform 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;

[0221] 2) Perform random access on the overlapping second resource (e.g., CFRA RO) according to at least the preamble configured with CBRA and assigned to CFRA;

[0222] 3) On the overlapping second resource (e.g., CFRA RO), preferentially perform random access according to the preamble configured with CBRA and assigned to CFRA, or, when there is no preamble configured with CBRA and assigned to CFRA, perform random access according to at least one of the third preamble and the first preamble.

[0223] The overlap between the second resource and the third resource includes partial overlap or complete overlap between the second resource and the third resource.

[0224] In an embodiment of the present application, when the random access resource is the second preamble, the second preamble satisfies at least one of the following:

[0225] 1) The second preamble is used for the request, activation, or deactivation of a specific signal;

[0226] Optionally, the specific signal includes but is not limited to a broadcast signal.

[0227] 2) The first preamble is a specific preamble assigned to CFRA;

[0228] For example, in addition to supporting the preamble assigned to CFRA configured with CARA, some first preambles are additionally configured for CFRA.

[0229] 3) The first preamble is a preamble other than the third preamble;

[0230] 4) The preamble obtained by processing the fourth preamble, where the fourth preamble is all the preambles defined by the protocol or the preambles configured for CFRA;

[0231] Optionally, the processing includes but is not limited to scrambling, spreading, or interleaving, etc.

[0232] Optionally, the fourth preamble includes 64 preambles in NR or the preambles pre-configured for CFRA.

[0233] Wherein, the third preamble is at least one of the following:

[0234] 1) The preamble assigned to CBRA;

[0235] 2) The preamble configured together with CBRA and assigned to CFRA;

[0236] 3) The preamble for SI request.

[0237] In an implementation manner of the present application, the method further includes at least one of the following:

[0238] 1) The terminal receives a third signaling from the network device, and the third signaling contains the mapping relationship between the second preamble and the reference signal;

[0239] Optionally, the third signaling may be a proprietary signaling for configuring the mapping relationship between the second preamble and the reference signal (such as SSB). For example, when configuring the second preamble in the RACH proprietary signaling, a specific reference signal (such as SSB) is specified, and this specific reference signal is different from the reference signal specified when configuring the third preamble.

[0240] 2) 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 (such as SSB).

[0241] For example, when configuring one or more preambles in the RACH proprietary signaling, the corresponding associated SSB is determined according to a certain rule.

[0242] For example, the third resource (CBRA RO) is associated with 4 SSBs, the number of second preambles configured for CBRA is 16, and they are evenly associated with 4 SSBs, that is, every 4 second preambles are associated with one SSB. If the network configures 4 CFRA preambles in the proprietary signaling, they are also associated with 4 SSBs in an evenly divided manner.

[0243] 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 certain terminal only uses one corresponding associated reference signal (e.g., SSB).

[0244] 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, reuse the relevant association configuration of the third preamble.

[0245] In an embodiment of the present application, the terminal obtains configuration information of random access resources, including:

[0246] The terminal receives a fourth signaling from a network-side device;

[0247] 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:

[0248] 1) High-layer signaling;

[0249] Optionally, the high-layer signaling includes at least one of the following: dedicated RACH configuration signaling, RRC signaling dedicated to beam failure recovery, signaling dedicated to flexible PRACH resource activation, etc.

[0250] 2) MAC layer signaling;

[0251] Optionally, the MAC layer signaling includes, but is not limited to, MAC CE or MAC PDU used to trigger the terminal to perform random access.

[0252] 3) Physical layer signaling.

[0253] Optionally, the physical layer signaling includes, but is not limited to, PDCCH commands.

[0254] In an embodiment of the present application, the terminal performs random access according to the configuration information of the random access resources, including:

[0255] When a first condition is satisfied, the terminal performs random access according to the configuration information of the random access resources;

[0256] Wherein, the first condition includes at least one of the following:

[0257] 1) The resources in the random access resources at least include resources for CBRA;

[0258] Considering that if the resources in the random access resources are resources exclusive to CFRA, at this time the capacity of random access can be enhanced to a certain extent by relying on additional configured resources dedicated to CFRA, then the first condition may include condition 1).

[0259] 2) The preamble in the random access resource includes at least one preamble for CFRA;

[0260] Considering the CFRA scenario, the network can control which UEs use the same preamble and different associated reference signals, thereby reducing the interference between the PRACH signals sent by these UEs. In this case, the first condition may include condition 2).

[0261] 3) The resources in the random access resource include at least the resources for CFRA;

[0262] 4) The preamble in the random access resource includes at least one preamble for CBRA;

[0263] 5) The random access satisfies a specific scenario;

[0264] Optionally, the specific random access scenario includes at least one of the following: network-triggered random access; terminal-triggered random access; RRC-triggered random access; MAC-triggered random access; physical layer-triggered random access; paging-triggered random access; random access corresponding to initial access; random access corresponding to RRC connection reestablishment; random access corresponding to synchronous reconfiguration or handover, such as reconfiguration or handover for a large number of terminals; random access corresponding to access in the 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; in the RRC connected state, when uplink data arrives but there is no PUCCH resource for SR, random access corresponding to a scheduling request failure, for example, when the scheduling request exceeds the maximum transmission times (SR Max Transmission reached), obtaining PUSCH resources again through the random access process; random access corresponding to beam failure recovery; in the RRC connected state, when uplink data arrives but the UE is in an out-of-sync state in the uplink; in the RRC connected state, when downlink data arrives but the UE is in an out-of-sync state in the uplink; random access corresponding to timing alignment during SCell addition; random access triggered by user data transmission in the idle state or inactive state; two-step random access; four-step random access.

[0265] 6) The measurement result of the terminal for the downlink signal is greater than or equal to a preset threshold;

[0266] 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).

[0267] Optionally, the preset threshold can be configured by the network or agreed upon by the protocol.

[0268] 7) The terminal has the ability to select the random access resource.

[0269] In an embodiment of the present application, the method further includes at least one of the following:

[0270] 1) The terminal sends, via RRC signaling, the ability of the terminal to select the random access resource to the network device;

[0271] 2) The terminal sends, via the current serving cell, the ability of the terminal to select the random access resource to the neighboring cell;

[0272] 3) The terminal sends, via an uplink signal or channel, the ability of the terminal to select the random access resource to the network device.

[0273] Optionally, the uplink signal or channel includes at least one of the following: Msg3, Message A (MsgA), Message 5 (Msg5), common PUCCH, PRACH, Sounding Reference Signal (SRS).

[0274] In an embodiment of the present application, the random access resources for performing random access include 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 third resource; where the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource for at least CBRA, that is, on the basis of traditional random access resources, additional preambles (the first preamble, the second preamble) or additional random access resources (the first resource) are introduced, so as to enhance the random access resource capacity during the random access process, reduce the random access delay, reduce the random access conflict, and improve the random access success rate.

[0275] SeeFigure 8 , embodiments of the present application provide a random access method, and the specific steps include: Step 801.

[0276] Step 801: The network side device sends configuration information of random access resources to the terminal;

[0277] Among them, the random access resources include at least one of the following:

[0278] 1) The first resource for CFRA (for example, additional CFRARO), and the first resource is different from the configured resources for CFRA;

[0279] 2) The first preamble associated with the second resource, and the first preamble is different from the configured preamble of the second resource;

[0280] 3) The second preamble associated with the third resource, and the second preamble is different from the configured preamble of the second resource;

[0281] Among them, the second resource is the PRACH resource for CFRA, and the third resource is the PRACH resource for at least CBRA.

[0282] In an 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:

[0283] The first indication information, which is used to indicate whether the first resource is effective. For example, the first indication information is used to indicate whether the newly configured CFRARO (i.e., additional CFRARO) is effective;

[0284] The time domain information of the first resource;

[0285] The frequency domain information of the first resource;

[0286] The power information of the first resource;

[0287] The association relationship information between the reference signal (such as SSB) and the first resource;

[0288] The association relationship information between the reference signal and the preamble;

[0289] The association relationship information between the first resource and the preamble.

[0290] In an embodiment of the present application, the network side device sends the configuration information of the random access resource, including:

[0291] When the random access is triggered by a physical layer signaling, the network side device performs at least one of the following:

[0292] 1) The network-side device sends the physical layer signaling to the terminal, and the configuration information of the first resource is included in the physical layer signaling;

[0293] 2) The network-side device sends a PRACH resource configuration table to the terminal, and first information is included in the PRACH resource configuration table, where the first information is used to indicate the configuration information of the first resource.

[0294] In an implementation manner of the present application, the network-side device sending the configuration information of the random access resource to the terminal includes:

[0295] When random access is triggered by high-layer signaling, the network-side device performs at least one of the following:

[0296] 1) The network-side device sends a first signaling to the terminal, and the configuration information of the first resource is included in the first signaling;

[0297] 2) The network-side device sends a second signaling to the terminal, and the configuration information of the first resource is included in the second signaling;

[0298] 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.

[0299] In an implementation manner of the present application, when the random access resource is the first preamble, the first preamble satisfies at least one of the following:

[0300] 1) The first preamble is used for the request, activation or deactivation of a specific signal;

[0301] 2) The first preamble is a specific preamble assigned to CFRA;

[0302] 3) The first preamble is a specific preamble assigned to CBRA;

[0303] 4) The first preamble is a preamble other than the third preamble;

[0304] 5) A preamble obtained by processing a fourth preamble, where the fourth preamble is all preambles defined by the protocol or preambles configured for CFRA;

[0305] Wherein, the third preamble is at least one of the following:

[0306] 1) A preamble assigned to CBRA;

[0307] 2) A preamble configured together with CBRA and assigned to CFRA;

[0308] 3) Preamble for SI request.

[0309] In an embodiment of the present application, when the random access resource is the second preamble, the second preamble satisfies at least one of the following:

[0310] 1) The second preamble is used for requesting, activating, or deactivating a specific signal;

[0311] 2) The first preamble is a specific preamble assigned to CFRA;

[0312] 3) The first preamble is a preamble other than the third preamble;

[0313] 4) A preamble obtained by processing a fourth preamble, where the fourth preamble is all preambles defined by the protocol or preambles configured for CFRA;

[0314] Among them, the third preamble is at least one of the following:

[0315] 1) A preamble assigned to CBRA;

[0316] 2) A preamble configured together with CBRA and assigned to CFRA;

[0317] 3) A preamble for SI request.

[0318] In an embodiment of the present application, the method further includes at least one of the following:

[0319] 1) The network device sends a third signaling to the terminal, and the third signaling includes the mapping relationship between the second preamble and the reference signal;

[0320] 2) The network device 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;

[0321] In an embodiment of the present application, the network device sends configuration information of the random access resource to the terminal, including:

[0322] The network device sends a fourth signaling to the terminal;

[0323] Among them, the fourth signaling includes 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:

[0324] 1) High-layer signaling;

[0325] Optionally, the high-layer signaling includes at least one of the following: dedicated RACH configuration signaling, RRC signaling specifically for beam failure recovery, signaling specifically for flexible PRACH resource activation, etc.

[0326] 2) MAC layer signaling;

[0327] Optionally, the MAC layer signaling includes but is not limited to MAC CE or MAC PDU for triggering the terminal to perform random access.

[0328] 3) Physical layer signaling.

[0329] Optionally, the physical layer signaling includes but is not limited to PDCCH commands.

[0330] In an embodiment of the present application, the method further includes at least one of the following:

[0331] 1) The network side device receives, from the terminal via RRC signaling, the ability of the terminal to select the random access resource;

[0332] 2) The network side device receives, from a terminal in the current serving cell, the ability of the terminal to select the random access resource and sends it to the neighboring cell;

[0333] 3) The network side device receives, from the terminal via an uplink signal, the ability of the terminal to select the random access resource.

[0334] In an embodiment of the present application, the random access resources for performing random access include 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 third resource; where the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource for at least CBRA. That is, on the basis of traditional random access resources, additional preambles (the first preamble, the second preamble) or additional random access resources (the first resource) are introduced, so as to enhance the random access resource capacity during the random access process, reduce the random access delay, reduce the random access conflict, and improve the random access success rate.

[0335] See Figure 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;

[0336] The first transceiver unit 901 is used to obtain the configuration information of the random access resource;

[0337] The first processing unit 902 is configured to perform random access according to the configuration information of the random access resource.

[0338] Wherein, the random access resource includes at least one of the following:

[0339] 1) A first resource for CFRA (e.g., an additional CFRARO), which is different from the configured resource for CFRA;

[0340] 2) A first preamble associated with a second resource, which is different from the configured preamble of the second resource;

[0341] 3) A second preamble associated with a third resource, which is different from the configured preamble of the second resource;

[0342] Wherein, the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource for at least CBRA.

[0343] In an 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:

[0344] 1) First indication information for indicating whether the first resource is effective;

[0345] For example, the first indication information is used to indicate whether a newly configured CFRARO (i.e., an additional CFRARO) is effective.

[0346] 2) Time domain information of the first resource;

[0347] 3) Frequency domain information of the first resource;

[0348] 4) Power information of the first resource;

[0349] 5) Association relationship information between a reference signal (e.g., SSB) and the first resource (e.g., an additional CFRARO);

[0350] 6) Association relationship information between the reference signal and the preamble;

[0351] 7) Association relationship information between the first resource and the preamble.

[0352] In an 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 a physical layer signaling:

[0353] 1) Receive the physical layer signaling from a network side device, where the physical layer signaling contains configuration information of the first resource;

[0354] 2) Receive 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 contains first information for indicating the configuration information of the first resource.

[0355] In an implementation manner of this application, the first transceiver unit 901 is further configured to, when random access is triggered by a high layer signaling, perform at least one of the following:

[0356] 1) Receive a first signaling from a network side device, where the first signaling contains the configuration information of the first resource;

[0357] 2) Receive a second signaling from a network side device, where the second signaling contains the configuration information of the first resource;

[0358] 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.

[0359] In an implementation manner of this application, when the random access resource is the first preamble, the first preamble satisfies at least one of the following:

[0360] 1) The first preamble is used for the request, activation or deactivation of a specific signal;

[0361] 2) The first preamble is a specific preamble assigned to CFRA;

[0362] 3) The first preamble is a specific preamble assigned to CBRA;

[0363] 4) The first preamble is a preamble other than the third preamble;

[0364] 5) A preamble obtained by processing a fourth preamble, where the fourth preamble is all preambles defined by the protocol or preambles configured for CFRA;

[0365] Wherein, the third preamble is at least one of the following:

[0366] 1) A preamble assigned to CBRA;

[0367] 2) A preamble configured together with CBRA and assigned to CFRA;

[0368] 3) A preamble for SI request.

[0369] In an embodiment of the present application, the first processing unit 902 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.

[0370] In an 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:

[0371] Perform random access on the non-overlapping second resource according to at least one of the third preamble and the first preamble;

[0372] Perform random access on the overlapping second resource according to the preamble configured together with CBRA and assigned to CFRA;

[0373] On the overlapping second resource, preferentially perform random access according to the preamble configured together with CBRA and assigned to CFRA, or when there is no preamble configured together with CBRA and assigned to CFRA, perform random access according to at least one of the other third preamble and the first preamble.

[0374] In an embodiment of the present application, when the random access resource is the second preamble, the second preamble satisfies at least one of the following:

[0375] 1) The second preamble is used for the request, activation or deactivation of a specific signal;

[0376] 2) The first preamble is a specific preamble assigned to CFRA;

[0377] 3) The first preamble is a preamble other than the third preamble;

[0378] 4) 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;

[0379] Wherein, the third preamble is at least one of the following:

[0380] 1) The preamble assigned to CBRA;

[0381] 2) The preamble configured together with CBRA and assigned to CFRA;

[0382] 3) The preamble for SI request.

[0383] In an implementation manner 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 and a reference signal (such as SSB);

[0384] Or,

[0385] The first processing unit 902 is further configured to determine a mapping relationship between the second preamble and a reference signal according to the mapping relationship between the third preamble and the reference signal (such as SSB);

[0386] In an implementation manner of the present application, the first transceiver unit 901 is further configured to receive a fourth signaling from a network-side device;

[0387] Wherein, 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:

[0388] 1) High-layer signaling;

[0389] Optionally, the high-layer signaling includes at least one of the following: dedicated RACH configuration signaling, RRC signaling dedicated to beam failure recovery, signaling dedicated to flexible PRACH resource activation, etc.

[0390] 2) MAC layer signaling;

[0391] Optionally, the MAC layer signaling includes, but is not limited to, a MAC CE or a MAC PDU for triggering a terminal to perform random access.

[0392] 3) Physical layer signaling.

[0393] Optionally, the physical layer signaling includes, but is not limited to, a PDCCH command.

[0394] In an implementation manner of the present application, the first processing unit 902 is further configured to: under the condition of meeting a first condition, perform random access according to the configuration information of the random access resource;

[0395] Wherein, the first condition includes at least one of the following:

[0396] 1) The random access resource at least includes a resource for CBRA;

[0397] 2) The preamble in the random access resource at least includes a preamble for CFRA;

[0398] 3) The random access resource at least includes a resource for CFRA;

[0399] 4) The preamble in the random access resource at least includes a preamble for CBRA;

[0400] 5) The random access satisfies a specific scenario;

[0401] 6) The measurement result of the downlink signal by the terminal is greater than or equal to a preset threshold;

[0402] 7) The terminal has the ability to select the random access resource.

[0403] In an implementation manner of this application, the first transceiver unit 901 is further configured to send, to the network-side device through an RRC signaling, the ability of the terminal to select the random access resource;

[0404] Alternatively, the first transceiver unit 901 is further configured to send, through the current serving cell to a neighboring cell, the ability of the terminal to select the random access resource;

[0405] Alternatively, the first transceiver unit 901 is further configured to send, through an uplink signal to the network-side device, the ability of the terminal to select the random access resource.

[0406] The device provided in the embodiment of this application can implement Figure 7 each process implemented by the method embodiment and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0407] See Figure 10 , the embodiment of this application provides a random access device. The device 1000 includes: a second transceiver unit 1001 and a second processing unit 1002. The second transceiver unit 1001 is configured to send configuration information of the random access resource to the terminal;

[0408] Wherein, the random access resource includes at least one of the following:

[0409] 1) A first resource for CFRA (for example, an additional CFRARO), and the first resource is different from the configured resource for CFRA;

[0410] 2) A first preamble associated with a second resource, and the first preamble is different from the configured preamble of the second resource;

[0411] 3) A second preamble associated with a third resource, and the second preamble is different from the configured preamble of the second resource;

[0412] Wherein, the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource for at least CBRA.

[0413] In an implementation manner of this 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:

[0414] The first indication information, which is used to indicate whether the first resource is effective;

[0415] The time domain information of the first resource;

[0416] The frequency domain information of the first resource;

[0417] The power information of the first resource;

[0418] The association relationship information between the reference signal and the first resource;

[0419] The association relationship information between the reference signal (e.g., SSB) and the preamble;

[0420] The association relationship information between the first resource and the preamble.

[0421] In an 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:

[0422] 1) Send the physical layer signaling to the terminal, where the physical layer signaling contains the configuration information of the first resource;

[0423] 2) 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.

[0424] In an embodiment of the present application, the second transceiver unit 1001 is further configured to: when random access is triggered by high-layer signaling, perform at least one of the following:

[0425] 1) Send a first signaling to the terminal, where the first signaling contains the configuration information of the first resource;

[0426] 2) Send a second signaling to the terminal, where the second signaling contains the configuration information of the first resource;

[0427] 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.

[0428] In an embodiment of the present application, when the random access resource is the first preamble, the first preamble satisfies at least one of the following:

[0429] 1) The first preamble is used for the request, activation or deactivation of a specific signal;

[0430] 2) The first preamble is a specific preamble assigned to CFRA;

[0431] 3) The first preamble is a specific preamble assigned to CBRA;

[0432] 4) The first preamble is a preamble other than the third preamble;

[0433] 5) A preamble obtained by processing a fourth preamble, where the fourth preamble is all preambles defined by the protocol or preambles configured for CFRA;

[0434] Wherein, the third preamble is at least one of the following:

[0435] 1) A preamble assigned to CBRA;

[0436] 2) A preamble configured with CBRA and assigned to CFRA;

[0437] 3) A preamble for SI request.

[0438] In an embodiment of the present application, when the random access resource is the second preamble, the second preamble satisfies at least one of the following:

[0439] 1) The second preamble is used for requesting, activating or deactivating a specific signal;

[0440] 2) The first preamble is a specific preamble assigned to CFRA;

[0441] 3) The first preamble is a preamble other than the third preamble;

[0442] 4) A preamble obtained by processing a fourth preamble, where the fourth preamble is all preambles defined by the protocol or preambles configured for CFRA;

[0443] Wherein, the third preamble is at least one of the following:

[0444] 1) A preamble assigned to CBRA;

[0445] 2) A preamble configured with CBRA and assigned to CFRA;

[0446] 3) A preamble for SI request.

[0447] In an embodiment of the present application, the second transceiver unit 1001 is further configured to send a third signaling to the terminal, and the third signaling includes a mapping relationship between the second preamble and a reference signal;

[0448] Alternatively, the second processing unit 1002 is configured to determine the mapping relationship between the second preamble and the reference signal according to the mapping relationship between the third preamble and the reference signal.

[0449] In an embodiment of the present application, the second transceiver unit 1001 is further configured to: send a fourth signaling to the terminal;

[0450] Wherein, the fourth signaling includes 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:

[0451] 1) High-layer signaling;

[0452] Optionally, the high-layer signaling includes at least one of the following: dedicated RACH configuration signaling, RRC signaling dedicated to beam failure recovery, signaling dedicated to flexible PRACH resource activation, etc.

[0453] 2) MAC layer signaling;

[0454] Optionally, the MAC layer signaling includes, but is not limited to, a MAC CE or a MAC PDU for triggering the terminal to perform random access.

[0455] 3) Physical layer signaling.

[0456] Optionally, the physical layer signaling includes, but is not limited to, a PDCCH command.

[0457] In an embodiment of the present application, the second transceiver unit 1001 is further configured to receive, from the terminal through RRC signaling, the ability of the terminal to select the random access resource;

[0458] Alternatively, the second transceiver unit 1001 is further configured to receive, from a terminal in the current serving cell, the ability of the terminal to select the random access resource and send it to a neighboring cell;

[0459] Alternatively, the second transceiver unit 1001 is further configured to receive, from the terminal through an uplink signal, the ability of the terminal to select the random access resource.

[0460] The device provided by the embodiments of the present application can implement Figure 8 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein again.

[0461] Figure 11Schematic diagram of the hardware structure of a terminal according to an embodiment of the present application. The terminal 1100 includes, but is not limited to, at least some components such as 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.

[0462] Those skilled in the art can understand that the terminal 1100 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 1110 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 11 The terminal structure shown does not limit the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0463] It should be understood that in the embodiment of the present application, the input unit 1104 may include a graphics processing unit (GPU) 11041 and a microphone 11042. The graphics processor 11041 processes the image data of static pictures or videos 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 at least one of a touch panel 11071 and 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. The 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 a joystick, which will not be elaborated here.

[0464] In the embodiment of the present application, after receiving the downlink data from the network side device, the radio frequency unit 1101 can transmit it to the processor 1110 for processing; in addition, the radio frequency unit 1101 can send uplink data to the network side device. Generally, the radio frequency unit 1101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0465] 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. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1109 may include a volatile memory or a non-volatile memory, or alternatively, the memory 1109 may include a non-transitory memory. Among them, the non-volatile memory or the non-transitory 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 a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synch link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 1109 in the embodiments of the present application includes but is not limited to these and any other suitable types of memories.

[0466] The processor 1110 may include one or more processing units; optionally, the processor 1110 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 1110 either.

[0467] The terminal provided by the embodiments of the present application can implement Figure 7 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, details are not described here again.

[0468] Such as Figure 12As shown, an embodiment of the present application further provides a network - side device 1200, including a processor 1201 and a memory 1202. A program or instruction that can run on the processor 1201 is stored on the memory 1202. When the program or instruction is executed by the processor 1201, it implements the above - mentioned Figure 7 or Figure 8 each step of the method embodiment and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0469] An embodiment of the present application further provides a readable storage medium. A program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, it implements Figure 7 or Figure 8 the method and each process of the above - mentioned embodiments, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0470] Among them, the processor is the processor in the terminal or network - side device described in the above - mentioned embodiment. The readable storage medium includes a computer - readable storage medium, such as a computer read - only memory ROM, a random - access memory RAM, a magnetic disk, or an optical disk, etc. In some examples, the readable storage medium can be a non - transient readable storage medium.

[0471] Another embodiment of the present application provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement Figure 7 or Figure 8 each process shown and the above - mentioned method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0472] It should be understood that the chip mentioned in the embodiment of the present application can also be referred to as a system - on - chip, a system chip, a chip system, or a system - on - a - chip, etc.

[0473] Another embodiment of the present application provides a computer program / program product. The computer program / program product is stored in a storage medium. The computer program / program product is executed by at least one processor to implement Figure 7 or Figure 8 each process shown and the above - mentioned method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0474] An embodiment of the present application further provides a communication system, including a terminal and a network - side device. Among them, the terminal is used to execute each process of the method embodiment as Figure 7 described, and the network - side device is used to execute each process of the method embodiment as Figure 8 described, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0475] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including such element. In addition, it should be pointed out 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 reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0476] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in the various embodiments of the present application.

[0477] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the purpose of the present application and the scope protected by the claims. These embodiments are all within the protection scope of the present application.

Claims

1. A random access method, characterized in that, Including: The terminal obtains the configuration information of the random access resource; The terminal performs random access according to the configuration information of the random access resource; Wherein, the random access resource includes at least one of the following: The first resource for contention-free random access CFRA, and the first resource is different from the configured resource for CFRA; The first preamble associated with the second resource, and the first preamble is different from the configured preamble of the second resource; The second preamble associated with the third resource, and the second preamble is different from the configured preamble of the third resource; Wherein, the second resource is the physical random access channel PRACH resource for CFRA, and the third resource is the 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: The first indication information for indicating whether the first resource is valid; 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.

3. The method according to claim 2, wherein The terminal obtains the configuration information of the random access resource, including: When the random access is triggered by the 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 the PRACH resource configuration table from the network side device, or the terminal obtains the preset PRACH resource configuration table, and the PRACH resource configuration table contains the 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 resource, including: When the random access is triggered by the high layer signaling, the terminal performs at least one of the following: The terminal receives the first signaling from the network side device, and the first signaling contains the configuration information of the first resource; The terminal receives the 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; The preamble obtained by processing the fourth preamble, and the fourth preamble is all the 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 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, characterized in that The terminal performs random access according to the configuration information of the random access resource, including: When the second resource and the third resource have overlapping resources, 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, characterized in that 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 preambles 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.

9. The method according to claim 8, characterized in that, 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, characterized in that 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: High layer signaling; Media Access Control MAC layer signaling; Physical layer signaling.

11. The method according to any one of claims 1 to 10, characterized in that, The terminal performs random access according to the configuration information of the random access resource, including: When a first condition is met, 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; 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, characterized in that, Includes: 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: The first resource for CFRA, and the first resource is different from the configured resource for CFRA; The first preamble associated with the second resource, and the first preamble is different from the configured preamble of the second resource; The second preamble associated with the third resource, and the second preamble is different from the configured preamble of the second resource; Wherein, the second resource is the PRACH resource for CFRA, and the third resource is the PRACH resource for at least 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: The 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 the 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 the PRACH resource configuration table to the terminal, and the PRACH resource configuration table contains the 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 the high-layer signaling, the network-side device performs at least one of the following: The network-side device sends the first signaling to the terminal, and the first signaling contains the configuration information of the first resource; The network-side device sends the 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 preambles configured for CFRA; Among them, 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 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 preambles configured for CFRA; Among them, 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 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 includes 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 the reference signal.

20. The method according to claim 17 or 18, characterized in that The network side device sends configuration information of the random access resource to the terminal, including: The network side device sends a fourth signaling to the terminal; Among them, 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: 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, through RRC signaling, the ability of the terminal to select the random access resource; The network side device receives from a terminal in the current serving cell the ability of the terminal to select the random access resource and sends it to a neighboring cell; The network side device receives from the terminal, through an uplink signal, the ability of the terminal to select the random access resource.

22. A random access device, characterized in that, Including: A first transceiver unit and a first processing unit; The first transceiver unit is used to obtain configuration information of the random access resource; The first processing unit is used to perform random access according to the configuration information of the random access resource; Among them, the random access resource includes at least one of the following: A first resource for CFRA, and the first resource is different from the resources 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; Among them, the second resource is a PRACH resource for CFRA, and the third resource is a PRACH resource at least for CBRA.

23. The device 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: The first indication information, which is used to indicate 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.

24. The device according to claim 23, characterized in that, The first transceiver unit is further configured to: when a 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 contains 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 contains first information, and the first information is used to indicate the configuration information of the first resource.

25. The device according to claim 23, characterized in that, The first transceiver unit is further configured to: when a 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 contains the configuration information of the first resource; Receive a second signaling from the network side device, where 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.

26. The device according to claim 22, characterized in that, 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; The 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: The preamble assigned to CBRA; The preamble configured together with CBRA and assigned to CFRA; The preamble used for the request of system information SI.

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 a random access on the second resource according to at least one of the third preamble and the first preamble.

28. The device according to claim 26, characterized in that, The first processing unit is further configured to: when there is a resource overlap between the second resource and the third resource, perform any one of the following: On the non-overlapping second resource, perform a random access according to at least one of the third preamble and the first preamble; On the overlapping second resource, perform a random access according to the preamble configured together with CBRA and assigned to CFRA; On the overlapping second resource, perform random access according to the preamble configured with CBRA and allocated to CFRA, or when there is no 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 device according to claim 22, 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 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, characterized in that, Comprising: A second transceiver unit for sending 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, the first resource being different from the configured resource for CFRA; A first preamble associated with a second resource, the first preamble being different from the configured preamble of the second resource; A second preamble associated with a third resource, the second preamble being 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 device according to claim 30, characterized in that, 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.

32. The device according to claim 31, wherein The second transceiver unit is further configured to: when 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 for indicating the configuration information of the first resource.

33. A terminal, characterized in that, 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, it implements the steps of the method according to any one of claims 1 to 12.

34. A network-side device, characterized in that, 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, it implements the steps of the method according to any one of claims 13 to 21.

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

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