Random access method for cell, terminal, and network side device

Abstract

The present application relates to the technical field of wireless communications, and discloses a random access method for a cell, a terminal, and a network side device. The random access method for a cell in the embodiments of the present application comprises: a terminal receives random access configuration information from a network side device, wherein the random access configuration information comprises a random access configuration of a target dimension of a target cell, and the target dimension is a dimension of the terminal; and on the basis of the random access configuration of the target dimension, the terminal executes a random access procedure in the dimension of the target cell, wherein the target cell comprises at least one dimension, and one dimension among the at least one dimension corresponds to at least one of the following: at least one sub-region of the target cell; at least one subspace of the target cell; at least one sub-cell of the target cell; a coverage range of at least some of a plurality of beams of the target cell; and a beam set, comprising the coverage range of at least some of the plurality of beams of the target cell.

Description

Random access method, terminal and network side equipment of cell

[0001] Cross-references

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 28, 2023, with application number 202311842580.4 and application name “Random access method, terminal and network side equipment for cell”. The entire contents of the application are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the field of wireless communication technology, and specifically relates to a random access method for a cell, a terminal, and a network-side device. Background Art

[0004] In the New Radio (NR) system, random access resources and access mechanisms are configured in a cell using System Information Block (SIB) 1, and terminals in the cell perform random access procedures according to the configuration.

[0005] However, there is no effective solution in the related art for configuring random access to a cell. Summary of the Invention

[0006] The embodiments of the present application provide a random access method for a cell, a terminal, and a network-side device, which can configure random access to a cell.

[0007] In a first aspect, a random access method for a cell is provided, which is executed by a terminal, and the method includes: the terminal receives random access configuration information from a network side device, wherein the random access configuration information includes a random access configuration of a target dimension of a target cell, and the target dimension is the dimension in which the terminal is located; the terminal performs a random access process in the target cell dimension based on the random access configuration of the target dimension; wherein the target cell includes at least one dimension, and one dimension of the at least one dimension corresponds to at least one of the following: at least one sub-area of ​​the target cell; at least one subspace of the target cell; at least one subcell of the target cell; the coverage range of at least part of the multiple beams of the target cell; a beam set, and the beam set includes the coverage range of at least part of the multiple beams of the target cell.

[0008] In a second aspect, a random access configuration method is provided, which is executed by a network side device, and the method includes: the network side device determines the random access configuration of each dimension of the target cell, wherein the target cell includes at least one dimension, and the random access configuration of different dimensions is configured separately; the network side device sends random access configuration information, wherein the random access configuration information includes the random access configuration of the target dimension, and the target dimension is any one of the at least one dimension; wherein one dimension of the at least one dimension corresponds to at least one of the following: at least one sub-area of ​​the target cell; at least one subspace of the target cell; at least one subcell of the target cell; at least part of the multiple beams of the target cell; a beam set, and the beam set includes at least part of the multiple beams of the target cell.

[0009] According to a third aspect, a random access device for a cell is provided, comprising: a receiving module for receiving random access configuration information from a network side device, wherein the random access configuration information includes a random access configuration of a target dimension of a target cell, and the target dimension is the dimension in which the terminal is located; an execution module for executing a random access process in the target cell dimension based on the random access configuration of the target dimension; wherein the target cell includes at least one dimension, and one dimension in the at least one dimension corresponds to at least one of the following: at least one sub-area of ​​the target cell; at least one subspace of the target cell; at least one subcell of the target cell; the coverage range of at least part of the multiple beams of the target cell; and a beam set, wherein the beam set includes the coverage range of at least part of the multiple beams of the target cell.

[0010] In a fourth aspect, a random access configuration device is provided, comprising: a determination module for determining the random access configuration of each dimension of a target cell, wherein the target cell includes at least one dimension, and the random access configurations of different dimensions are configured separately; a sending module for sending random access configuration information, wherein the random access configuration information includes the random access configuration of the target dimension, and the target dimension is any one of the at least one dimension; wherein one dimension of the at least one dimension corresponds to at least one of the following: at least one sub-area of ​​the target cell; at least one subspace of the target cell; at least one subcell of the target cell; the coverage range of at least part of the multiple beams of the target cell; a beam set, and the beam set includes the coverage range of at least part of the multiple beams of the target cell.

[0011] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0012] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the processor is used to implement the steps of the method described in the first aspect, and the communication interface is used to couple with the processor.

[0013] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0014] In an eighth aspect, a network side device is provided, comprising a processor and a communication interface, wherein the processor is used to implement the steps of the method described in the second aspect, and the communication interface is used to couple with the processor.

[0015] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0016] In the tenth aspect, a wireless communication system is provided, comprising: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0017] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0018] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0019] In an embodiment of the present application, the terminal receives random access configuration information from a network-side device and, based on the random access configuration of the target dimension in the received random access configuration information, executes a random access procedure in the target cell dimension, wherein the random access configuration information includes the random access configuration of the target dimension of the target cell, the target dimension is the dimension in which the terminal is located; the target cell includes at least one dimension, and one dimension corresponds to at least one of the following: at least one sub-area of ​​the target cell; at least one subspace of the target cell; at least one subcell of the target cell; the coverage of at least some of the multiple beams of the target cell; a beam set, the beam set including the coverage of at least some of the multiple beams of the target cell. This allows terminals in different dimensions within the same cell to execute random access procedures according to the random access configuration of the dimension in which they are located, thereby implementing random access configuration for the target cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 shows a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0021] FIG2 shows a schematic diagram of a random access process provided by an embodiment of the present application;

[0022] FIG3 shows a schematic diagram of another random access process provided by an embodiment of the present application;

[0023] FIG4 is a schematic diagram showing a flow chart of a random access method for a cell provided in an embodiment of the present application;

[0024] FIG5 shows a schematic diagram of a multi-dimensional cell provided in an embodiment of the present application;

[0025] FIG6 shows a schematic diagram of another multi-dimensional cell provided in an embodiment of the present application;

[0026] FIG7 shows a schematic diagram of another multi-dimensional cell provided in an embodiment of the present application;

[0027] FIG8 is a schematic diagram showing a flow chart of a random access configuration method provided in an embodiment of the present application;

[0028] FIG9 shows a schematic structural diagram of a random access device for a cell provided in an embodiment of the present application;

[0029] FIG10 shows a schematic structural diagram of a random access configuration device provided in an embodiment of the present application;

[0030] FIG11 shows a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0031] FIG12 is a schematic diagram showing the hardware structure of a terminal provided in an embodiment of the present application;

[0032] FIG13 shows a schematic diagram of the hardware structure of a network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0034] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0035] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0036] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0037] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, 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.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the 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 (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0038] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (MME), access mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application service discovery function (EASDF), unified data management (UDM), unified data repository (UDR), home user server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BSF), application function ( Function, AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), etc. It should be noted that in the embodiment of the present application, only the core network equipment in the NR system is taken as an example to introduce, and the specific type of the core network equipment is not limited.

[0039] In order to better understand the technical solutions provided by this application, we first introduce the relevant technologies involved in this application.

[0040] 1. NR random access configuration

[0041] To support beam-based random access, NR defines a random access time-frequency resource configuration mechanism based on the correspondence between uplink random access resources and cell discovery signal synchronization signal block (SSB) beams. Its uplink random access resources are evenly distributed between different SSB beams or SSB beam sets. Random access resources include the physical random access channel (PRACH) transmission time-frequency position (PRACH occasion, PO) and the random access signal PRACH preamble. An SSB beam can be allocated with multiple POs, or an SSB beam set can share one PO.

[0042] As shown in Figure 2, the traditional Random Access Channel (RACH) process includes a four-step random access process. The UE sends a PRACH preamble to the base station. The UE receives a Random Access Response (RAR) from the base station. The UE determines the uplink transmission time based on the timing advance carried in the preamble. The UE sends a Msg3 based on the scheduling configuration carried in the preamble. The Msg3 carries identity information and service request information. Finally, the UE receives contention resolution information from the base station, marking the completion of the random access process. In addition, as shown in Figure 3, NR also supports a two-step random access process. In the first step, the UE sends the PRACH preamble and Msg3 PUSCH to the base station. In the second step, the UE receives a response message from the base station, including timing adjustment information (Time Advance) and an indication of successful access (i.e., the UE's identity). If the received UE identity matches its own identity, it indicates that the network has been successfully accessed.

[0043] For the 2-Step RACH process and the 4-Step RACH process, the random access resources of an NR cell are evenly distributed among the SSB beams.

[0044] In addition, the base station can currently configure the UE to use random access preamble groups to indicate the size of Msg3. When the Msg3 size is less than a preset threshold, the random access preamble from group A is used; otherwise, group B is used. The base station determines the size of Msg3 based on whether the received random access preamble belongs to group A or group B, thereby determining the amount of radio resources to allocate to the UE for Msg3 transmission via RAR.

[0045] 2. Cell Coverage

[0046] 2G / 3G / 4G wireless cells use carrier frequencies below 6 GHz and are primarily used to provide ground-based wireless signal coverage. In the 5G era, wireless signal coverage requirements will be diversified. In addition to ground coverage, ground base stations will also be required to provide wireless signal coverage at mid- and low-altitude altitudes. For example, ground base stations will serve traffic from the ground, high-rise buildings in urban areas, and low- and medium-altitude aircraft. Therefore, in addition to horizontal beam scanning for ground coverage, aerial beam scanning will also be required to provide coverage at high-rise buildings and mid- and low-altitude altitudes.

[0047] Furthermore, with the development of large-scale and distributed antennas, cell coverage is no longer limited to the coverage area of ​​a single antenna. The coverage area of ​​a cell depends on a combination of factors, including the number of antennas deployed, their orientation, transmit power, and frequency. Distributed antennas can expand cell coverage, change the shape of the cell's coverage area, and cover shadowed areas.

[0048] In actual applications, different areas of the same cell may have different service types and load distributions. Furthermore, different areas or spaces within the cell may have different requirements for random access mechanisms. If 2-step RACH is used for full coverage, some areas may lack UEs that support this function or lack services that require it, resulting in a waste of 2-step RACH radio access resources. Therefore, if random access is configured at the cell granularity, and random access resources are evenly distributed among the cell discovery signal beams, then if the service load distribution in different areas or spaces within the cell is uneven and the service types vary, random access resource utilization efficiency in some areas or spaces may be low, random access resources in others may be insufficient, or the access performance of UEs in some areas or spaces may not meet user experience requirements.

[0049] To address these issues, embodiments of the present application provide a random access solution for a cell to solve these problems.

[0050] The random access scheme for a cell provided in the embodiments of the present application is described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0051] FIG4 illustrates a flow chart of a random access method for a cell according to an embodiment of the present application. This method 400 may be executed by a terminal device. In other words, the method may be executed by software or hardware installed on the terminal device. As shown in FIG4 , the method may include the following steps.

[0052] S410: The terminal receives random access configuration information from a network-side device.

[0053] The random access configuration information includes the random access configuration of the target dimension of the target cell, and the target dimension is the dimension in which the terminal is located.

[0054] It can be understood that the random access method of the cell of the present application is implemented based on a multi-dimensional cell form. A multi-dimensional cell means that according to the service type and service load distribution of the target cell, the coverage area or space of the target cell can be divided into several sub-areas or sub-spaces or sub-cells according to the service provision requirements. Each sub-area or sub-space or sub-cell is called a dimension, that is, each cell can be divided into multiple dimensions.

[0055] In this embodiment of the present application, the target cell includes at least one dimension, and one dimension of the at least one dimension corresponds to at least one of the following (1)-(5):

[0056] (1) At least one sub-area of ​​the target cell. In this implementation, the coverage area of ​​the target cell may be divided into multiple sub-areas, where at least one sub-area is a dimension of the target cell. For example, the ground area covered by the target cell may be divided into multiple sub-areas.

[0057] (2) At least one subspace of the target cell. In this implementation, the coverage space of the target cell can be divided into multiple subspaces, where at least one subspace is a dimension of the target cell. For example, the coverage space of the target cell can be divided into three subspaces: ground, low-altitude, and mid-altitude, each of which is a dimension of the target cell.

[0058] (3) At least one sub-cell of the target cell. In this implementation, the coverage of the target cell may be divided into multiple sub-cells, wherein at least one sub-cell is a dimension of the target cell.

[0059] (4) The coverage of at least some of the multiple beams of the target cell.

[0060] Each wireless cell of NR can be provided with a cell discovery signal by a group of SSB beams. This group of SSB beams is sent according to a set period (for example, 20ms) and power. Each SSB beam provides azimuth coverage, and adjacent SSB beams have partial cross-coverage to provide seamless coverage. Therefore, in this implementation, the coverage range of at least part of the multiple beams of the target cell is used as a dimension of the target cell.

[0061] (5) A beam set, wherein the beam set includes the coverage of at least part of the multiple beams of the target cell. In this implementation, the multiple beams of the target cell can be divided into multiple beam sets, and the coverage range of each beam set is a dimension of the target cell. For example, in FIG5 , the part of the beams radiating toward the ground is a beam set corresponding to the ground coverage dimension, the part of the beams radiating toward the intermediate space is a beam set corresponding to the intermediate space coverage dimension, and the part of the beams radiating upward is a beam set corresponding to the higher space coverage dimension.

[0062] Exemplarily, as shown in FIG5 , the multi-dimensional cell includes a ground coverage dimension, an intermediate space coverage dimension, and a higher space coverage dimension, wherein the ground coverage dimension can be used to serve ground services, the intermediate space coverage dimension can be used for communication services for residents on the floor, and the higher space coverage dimension can be used for aircraft communication services. As shown in FIG6 , the multi-dimensional cell includes a dimension on the left for square coverage and a dimension on the right for lake coverage. The dimension on the left for square coverage is used for communication services for the dense crowd on the left, and the dimension on the right for lake coverage is used for necessary sparse tourist communication services on the lake. As shown in FIG7 , the multi-dimensional cell includes a macro coverage dimension that provides wide-area coverage and three micro coverage dimensions that provide hotspot coverage or shadow area coverage.

[0063] In this embodiment of the present application, cell coverage in each dimension is provided by a set of cell discovery signal beams. Each cell discovery signal beam is used to transmit a system message consisting of a cell's downlink synchronization signal, a cell identifier, and some necessary system parameters. The terminal monitors the cell discovery signal beam to discover the cell, achieve downlink synchronization with the cell, and obtain necessary system parameters. The terminal can receive subsequent system messages based on these necessary system parameters.

[0064] In an embodiment of the present application, each dimension has a corresponding random access configuration. When a terminal obtains random access configuration information, it can select the random access configuration of the dimension in which the terminal is located, that is, the target dimension, from the random access configuration information. The dimension in which the terminal is located refers to the dimension in which the terminal is located, and can also refer to the dimension selected by the terminal.

[0065] In an embodiment of the present application, the terminal can determine the dimension in which the terminal is located based on the detected cell discovery signal. For example, the terminal can obtain the dimension identifier of the target dimension in which the terminal is located based on the detected cell discovery signal. That is, when the terminal obtains the random access configuration information, it can determine the random access configuration corresponding to the dimension identifier from the random access configuration information based on the dimension identifier of the target dimension. Therefore, in one implementation method, the obtaining of the dimension identifier of the target dimension in which the terminal is located includes: the terminal receives the target cell discovery signal; the terminal obtains the dimension identifier of the target dimension in which the terminal is located based on the received target cell discovery signal.

[0066] In one implementation, the terminal obtains the dimension identifier of the target dimension corresponding to the target cell discovery signal based on the received target cell discovery signal, which may include one of the following (1)-(3):

[0067] (1) The terminal obtains the dimension identifier of the target dimension based on the information carried in the target cell discovery signal.

[0068] In another implementation, the terminal obtains the dimension identifier of the target dimension based on the information carried in the target cell discovery signal, which may include one of the following (1.1) and (1.2):

[0069] (1.1) The terminal obtains the dimension identifier of the target dimension carried in the target cell discovery signal;

[0070] (1.2) The terminal obtains a target parameter carried in the target cell discovery signal, and obtains a dimension identifier of the target dimension according to the target parameter.

[0071] In one embodiment, the target parameter includes one of the following:

[0072] First indication information and target beam sequence number, wherein the first indication information is used to indicate the maximum number of discovery signal beams corresponding to a dimension of the target cell, and the target beam sequence number is used to indicate the beam sequence number of the discovery signal beam corresponding to the target cell discovery signal within the target cell. For example, the dimension identifier of the target dimension = round down (target beam sequence number / maximum number of discovery signal beams of the target dimension).

[0073] Target beam sequence number, wherein the target beam sequence number is used to indicate the beam sequence number of the discovery signal beam corresponding to the target cell discovery signal within the target cell; for example, the number of discovery signal beams that can be contained in a dimension (that is, the maximum number of discovery signal beams corresponding to a dimension) is predefined by the protocol, and the target cell discovery signal carries the target beam sequence number, and the dimension identifier of the target dimension = rounded down (target beam sequence number / maximum number of discovery signal beams in the target dimension).

[0074] For example, a cell can have 3 dimensions, and the maximum number of discovery signal beams in each dimension is 8, where dimension 0 has beams 0, 1 and 2, dimension 1 has beams 8, 9, 10 and 11, and dimension 2 has beams 16 and 17.

[0075] Optionally, the protocol can define a list of maximum discovery signal beam numbers for a dimension. The network side device can indicate the serial number corresponding to the target dimension in the target discovery signal. The UE queries the list of maximum discovery signal beam numbers according to the serial number to determine the maximum number of discovery signal beams for each dimension, that is, the maximum value of the number of discovery signal beams corresponding to one dimension.

[0076] Second indication information and target beam sequence number, wherein the second indication information is used to indicate the number of dimensions of the target cell, and the target beam sequence number is used to indicate the beam sequence number of the discovery signal beam corresponding to the target cell discovery signal within the target cell. For example, the dimension identifier of the target dimension = the lower dimension identifier = the beam sequence number % the total number of dimensions, wherein "%" represents a remainder operation.

[0077] (2) The terminal obtains the dimension identifier of the target dimension based on a target synchronization signal sequence included in the target cell discovery signal, wherein the target synchronization signal sequence includes one of the following: a primary synchronization signal sequence and a secondary synchronization signal sequence.

[0078] In one implementation, the terminal obtains the dimension identifier of the target dimension based on the target synchronization signal sequence included in the target cell discovery signal, including one of (2.1) and (2.2):

[0079] (2.1) The terminal obtains the dimension identifier of the target dimension based on the target root sequence, wherein the target root sequence is the root sequence corresponding to the target synchronization signal sequence included in the target cell discovery signal, and the root sequences corresponding to the target synchronization signal sequences included in the cell discovery signals corresponding to different dimensions of the target cell are different.

[0080] (2.2) The terminal obtains the dimension identifier of the target dimension based on the target branch sequence, wherein the target branch sequence is a branch of a root sequence corresponding to a target synchronization signal sequence included in the target cell discovery signal, and the target synchronization signal sequences used by the cell discovery signals corresponding to different dimensions of the target cell belong to different branches of the same root sequence.

[0081] Optionally, a root sequence or a dimension identifier corresponding to a branch of a root sequence may be predefined by the protocol.

[0082] (3) The terminal obtains the dimension identifier of the target dimension based on the target frequency grid used by the target cell discovery signal.

[0083] Among them, in one implementation method, the terminal obtains the dimension identifier of the target dimension based on the target frequency grid used by the target cell discovery signal, including: the terminal obtains the dimension identifier of the target dimension corresponding to the target frequency grid according to the correspondence between the frequency grid and the dimension identifier.

[0084] For example, the protocol defines a correspondence between the frequency grid where the discovery signal is located and the dimension identifier. After the UE detects the discovery signal, it determines the dimension of the discovery signal beam based on the frequency grid where the discovery signal is located. Alternatively, the protocol defines a basic frequency grid and several auxiliary frequency grids for sending discovery signals. Any cell must use its basic frequency grid to send discovery signals in one dimension. If the cell has other dimensions, it uses the auxiliary frequency grid for sending.

[0085] Optionally, a dimension identifier corresponding to a grid configuration may be predetermined by the protocol.

[0086] S420: The terminal performs a random access procedure in the target cell dimension based on the random access configuration in the target dimension.

[0087] In S420, after the terminal obtains the random access configuration of the target dimension, it initiates a random access procedure according to the random access configuration of the target dimension.

[0088] In an embodiment of the present application, the terminal receives random access configuration information from a network side device, and executes a random access process in the target cell dimension based on the random access configuration of the target dimension in the received random access configuration information, wherein the random access configuration information includes the random access configuration of the target dimension of the target cell, and the target dimension is the dimension in which the terminal is located; the target cell includes at least one dimension, and one dimension corresponds to at least one of the following: at least one sub-area of ​​the target cell; at least one subspace of the target cell; at least one subcell of the target cell; the coverage range of at least part of the multiple beams of the target cell; a beam set, and the beam set includes the coverage range of at least part of the multiple beams of the target cell, so that terminals in different dimensions in the same cell can execute the random access process according to the random access configuration of the dimension in which they are located, avoiding the problem that terminals in the same cell all use the same random access configuration, resulting in the differentiated random access requirements of different areas or spaces of the same cell not being met, thereby improving the access performance of the terminal and the utilization of random access resources.

[0089] In one implementation, the random access configuration includes at least one of the following (1)-(4):

[0090] (1) Random access time-frequency resource configuration.

[0091] In another implementation, the random access time-frequency resource configuration may include at least one of the following (1.1) and (1.2):

[0092] (1.1) Density of random access resources.

[0093] The density of the random access resource is used to indicate one of the following:

[0094] (a) The number of time-frequency positions of random access resources corresponding to a cell discovery signal beam.

[0095] (b) The number of cell discovery signal beams corresponding to a random access resource time-frequency position.

[0096] (c) The number of random access signals corresponding to a cell discovery signal beam.

[0097] Among them, the discovery signal beam can include an SSB beam, and the random access resource includes a PRACH transmission time-frequency position (PRACH occasion, PO) and a random access signal PRACH preamble. Then, multiple SSB beams can correspond to the same resource time-frequency position, one SSB corresponds to one or more resource time-frequency positions, and one SSB can be configured with multiple corresponding PRACH preambles.

[0098] It should be noted that the number of the above-mentioned random access resource time-frequency positions, the number of cell discovery signal beams and the number of random access signals can be fractions, decimals or positive integers.

[0099] (1.2) Type of random access resource.

[0100] The type of random access resource may include a random access resource for a 2-step RACH process, a random access resource for a 4-step RACH process, and a random access resource dedicated to an integrated access backhaul (IAB) node. Exemplarily, the random access time-frequency resource configuration of the target dimension may be a random access resource for a 2-step RACH process, and the random access time-frequency resource configuration of a first dimension adjacent to the target dimension may be a random access resource for a 4-step RACH process.

[0101] (2) Power configuration of random access signal.

[0102] In another implementation, the power configuration of the random access signal may include at least one of the following (2.1) and (2.2):

[0103] (2.1) Transmit power configuration of random access signal.

[0104] In yet another implementation, the transmit power configuration of the random access signal includes at least one of the following:

[0105] (a) Target received power of the random access signal.

[0106] It is understandable that the terminal can determine the transmit power of the random access signal based on the target receive power of the random access signal, and use this transmit power to send the random access signal during the random access process, thereby avoiding interference with neighboring cells caused by random access.

[0107] (b) A power boost step size of the random access signal.

[0108] Regarding the power increase step size of the random access signal, it is understood that when a terminal sends a random access signal during a random access process, the power will be increased according to a certain step size to ensure the reliability of the transmitted signal. For example, if a service of a certain dimension is sensitive to access delay, if the terminal did not receive a response from the network device when sending the random access signal the previous time, then when sending the random access signal again, the transmission power can be increased to increase the probability of the network device detecting the random access signal and shorten the access delay.

[0109] (c) the maximum allowed transmit power of the random access signal.

[0110] The maximum allowed transmit power of the random access signal indicates the maximum power that the terminal can use when sending the random access signal. For example, if a service of a certain dimension is sensitive to access delay, a larger maximum allowed transmit power can be configured to reduce access delay in order to enable the terminal to access as quickly as possible.

[0111] (2.2) Configuration of the receiving power threshold of the cell discovery signal used in the random access process.

[0112] The receiving power threshold configuration includes at least one of the following:

[0113] (a) a first receiving power threshold, used to instruct the terminal to determine, based on the first receiving power threshold, whether to evaluate the propagation loss between the network-side device and the terminal based on the receiving power of the cell discovery signal beam currently providing service.

[0114] For example, if the received power of the cell discovery signal beam currently providing service is higher than the first received power threshold, the terminal can evaluate the propagation loss between the network side device and the terminal based on the received power of this cell discovery signal beam.

[0115] (b) a second receiving power threshold, used to instruct the terminal to determine whether to select a random access resource on the secondary uplink carrier to send a random access signal based on the second receiving power threshold.

[0116] For example, when densely deployed uplink receiving sites are used, a lower second receive power threshold can be configured. For example, if the cell currently providing service finds that the receive power of the signal beam is higher than the second receive power threshold, the random access signal can be sent using random access resources on a high-frequency uplink carrier. Otherwise, the random access signal can be sent using random access resources on a secondary uplink carrier (lower frequency).

[0117] (c) a third receiving power threshold, used to instruct the terminal to determine, based on the third receiving power threshold, whether to select to initiate a random access procedure based on a two-step random access procedure.

[0118] (d) a fourth receiving power threshold, used to instruct the terminal to determine, based on the fourth receiving power threshold, whether to allow initiation of a random access procedure based on a 4-step random access procedure.

[0119] For example, when the terminal is in the target dimension, the third receiving power threshold configured by the base station for the target dimension is X dB. When the cell discovery signal (Reference Signal Receiving Power, RSRP) measured by the terminal is higher than X dB, random access can be initiated based on the 2-Step-RACH process. Otherwise, the terminal selects other random access procedures, such as initiating random access based on the 4-Step-RACH process.

[0120] (3) Random access control parameter configuration.

[0121] In one implementation, the random access control parameter configuration includes at least one of the following:

[0122] (3.1) Monitor the length of time for the random access response message.

[0123] It is understood that the network side device can set the time length based on different dimensions of random access load, service priority, sensitivity to random access delay, etc. In this way, the network side device can give priority to random access triggered by higher service priority or delay-sensitive services. Then, the terminal can determine the length of time to wait after sending a random access signal or a random access signal and the accompanying PUSCH, that is, the length of time to monitor the random access response message.

[0124] (3.2) Maximum number of random access signal transmissions.

[0125] The maximum number of random access signal transmissions includes the maximum number of PRACH transmissions used to limit the establishment, re-establishment, and recovery of an RRC connection.

[0126] (3.3) Backoff time information.

[0127] Backoff time information means that when a conflict or collision occurs during random access, it is necessary to wait for a random period of time before retrying. Therefore, the terminal can use this backoff time information to reduce the possibility of conflict or collision occurring again, thereby improving the efficiency and stability of random access.

[0128] Optionally, the backoff time information may include at least one of the following: a mapping relationship between a backoff time identifier and a backoff time value, and a backoff time indication. The mapping relationship may be common to multiple dimensions, or the mapping relationship may be dedicated to the target dimension. For example, multiple dimensions use the same backoff time table, which includes multiple backoff time identifiers and backoff time values ​​corresponding to each backoff time identifier. In the case of excessive access load, for the dimension that provides services for delay-sensitive services, the backoff time indication sent by the network side device may indicate a backoff time identifier corresponding to a smaller backoff time value or may not indicate a backoff time. For the dimension that provides services for non-delay-sensitive services, the backoff time indication sent by the network side device may indicate a backoff time identifier corresponding to a larger backoff time value.

[0129] Optionally, if the backoff time information does not include the above-mentioned mapping relationship, the backoff time indication may directly indicate the backoff time value. Alternatively, if the backoff time information does not include the above-mentioned backoff time indication, the backoff time value of the target dimension may be agreed to be the backoff time value corresponding to a specified position in the mapping relationship, for example, the first backoff time value in the mapping relationship.

[0130] (4) Size indication configuration of message 3 in the random access procedure.

[0131] It can be understood that, taking into account the different types of services and loads in different dimensions, the network side equipment can configure the size threshold of message 3 (Msg3) in different dimensions respectively. In this way, the terminal can determine the corresponding random signal group according to the size of Msg3, and select a random signal from it to perform random access.

[0132] In one implementation, the terminal receiving the random access configuration information from the network side device may include one of the following (1) to (4):

[0133] (1) The terminal receives a random access configuration specific to the target dimension from the network-side device.

[0134] It can be understood that each dimension has a useful random access configuration. The terminal receives the random access time-frequency resource configuration of the target dimension based on the dimension to which the currently selected cell discovery signal beam belongs, that is, the target dimension. When the terminal requires the network to provide access services, the random access resource can be determined based on the random access time-frequency resource configuration of the target dimension to initiate the random access process.

[0135] (2) The terminal receives a first random access configuration common to the target cell and a second random access configuration specific to the target dimension from the network side device, wherein the second random access configuration includes at least one of the following: a partial configuration not provided in the first random access configuration, and a configuration used to replace a partial configuration in the first random access configuration.

[0136] It can be understood that the network side device provides a universal random access configuration, namely the first random access configuration, for the target cell, which is applicable to all dimensions in the target cell and can also be applicable to all dimensions in other cells; at the same time, the network side device can provide a dedicated random access configuration for each dimension or partial dimension or a certain dimension, and the configuration is dedicated to the dedicated random access parameters of this dimension, which may include partial configuration not provided by the first random access configuration, or a configuration used to replace partial configuration in the first random access configuration. The universal random access configuration and the dimension-specific random access configuration respectively include random access time-frequency resource configuration parameters or random access control parameters. After the terminal receives the first random access configuration and the dedicated second random access configuration of the target dimension, when performing random access in the target dimension, it can preferentially perform the random access process based on the parameters provided by the dedicated second random access configuration; for parameters that are not configured in the dedicated second random access configuration, the terminal can use the configuration value provided by the first random access configuration.

[0137] (3) The terminal receives a third random access configuration common to the target cell and a fourth random access configuration specific to the target dimension from the network side device, wherein the terminal uses one of the third random access configuration and the fourth random access configuration to perform a random access procedure.

[0138] It can be understood that the network side device provides a general random access configuration, namely the third random access configuration, for the target cell, which can be used for random access of terminals in all dimensions within the target cell, and can also be used for random access of terminals in all dimensions in other cells; at the same time, the network side device can provide a dedicated random access configuration, namely the fourth random access configuration, for each dimension or part of the dimensions or a certain dimension. The fourth random access configuration is only provided for terminals in the target dimension to perform random access; when the terminal initiates a random access process in the target dimension, it can choose to perform the random access process based on the third random access configuration or the fourth random access configuration.

[0139] Optionally, when the target dimension is configured with both the third random access configuration and the fourth random access configuration, the terminal preferentially selects the fourth random access configuration to perform random access.

[0140] Optionally, when a UE fails to access based on the fourth random access configuration, it may choose to access using the third random access configuration.

[0141] (4) The terminal receives the random access configuration information from the network-side device, wherein the random access configuration information includes random access configurations of various dimensions of the target cell.

[0142] It can be understood that the random access configuration information may include dedicated random access configurations for each dimension. After receiving the random access configuration information, the terminal obtains the random access configuration applicable to the target dimension from the random access configuration information according to the dimension in which it is located and performs random access.

[0143] FIG8 illustrates a flow chart of a method for configuring random access in an embodiment of the present application. Method 800 may be executed by a network-side device. In other words, the method may be executed by software or hardware installed on the network-side device. As shown in FIG8 , the method may include the following steps.

[0144] S810: The network-side device determines the random access configuration of each dimension of the target cell.

[0145] In an embodiment of the present application, the target cell includes at least one dimension, and random access configurations of different dimensions are configured separately.

[0146] In the embodiment of the present application, one of the at least one dimension corresponds to at least one of the following:

[0147] at least one sub-area of ​​the target cell;

[0148] at least one subspace of the target cell;

[0149] at least one sub-cell of the target cell;

[0150] at least some of the multiple beams of the target cell;

[0151] A beam set includes at least part of the multiple beams of the target cell.

[0152] It is understandable that by dividing the target cell into multiple dimensions, random access configuration is performed on each dimension respectively. For the division and definition of the dimensions, reference may be made to the relevant description in the embodiment shown in FIG4 , which will not be repeated here.

[0153] Optionally, before S820, the method may further include: the network side device configuring dimension identifiers of the respective dimensions.

[0154] In one implementation, configuring the dimension identifier of each dimension includes: the network side device determines at least one dimension included in the target cell; the network side device configures the dimension identifier of each dimension according to a predetermined rule.

[0155] In one implementation, after configuring the dimension identifiers of each dimension, it also includes: the network side device sends the cell discovery signal of each dimension respectively according to the sending parameter set corresponding to each dimension; wherein the sending parameter sets used by the cell discovery signals of different dimensions are configured separately.

[0156] Furthermore, the dimension identifier of the dimension corresponding to the cell discovery signal may be indicated by one of the following:

[0157] (1) Information carried in the cell discovery signal.

[0158] (2) The cell discovery signal includes a target synchronization signal sequence, wherein the target synchronization signal sequence includes one of the following: a primary synchronization signal sequence and a secondary synchronization signal sequence.

[0159] (3) The frequency grid used by the cell discovery signal.

[0160] Through the above implementation, the network side device can determine the dimension identifiers of each dimension of the target cell, and then identify the random access configuration of each dimension according to the dimension identifiers of each dimension.

[0161] S820: The network-side device sends random access configuration information.

[0162] The random access configuration information includes a random access configuration of a target dimension, and the target dimension is any one of the at least one dimension.

[0163] In S820, after the network side device configures the random access configuration of the target dimension, it sends random access configuration information to the terminal to instruct the terminal to initiate a random access process according to the random access configuration information.

[0164] In an embodiment of the present application, a network-side device determines a corresponding random access configuration for each dimension of a target cell. After determining the random access configuration for each dimension, the network-side device sends random access configuration information, wherein the random access configuration information includes the random access configuration for the target dimension, where the target dimension is any one of at least one dimension, and one dimension corresponds to at least one of the following: at least one sub-area of ​​the target cell; at least one subspace of the target cell; at least one subcell of the target cell; at least some of the multiple beams of the target cell; a beam set, wherein the beam set includes at least some of the multiple beams of the target cell. This allows for separate random access configurations to be made for different dimensions to accommodate the random access requirements of services in different dimensions, thereby improving the network-side device's tolerance for random access signaling overhead and avoiding problems such as low utilization efficiency of random access resources in some dimensions and shortage of random access resources in other dimensions.

[0165] In one implementation, the random access configuration includes at least one of the following: random access time-frequency resource configuration; random access signal power configuration; random access control parameter configuration; and message 3 size indication configuration in the random access process.

[0166] For the specific content of the random access configuration, please refer to the description in the embodiment shown in FIG4 , which will not be repeated here.

[0167] In one implementation, the random access time-frequency resource configuration includes at least one of the following: the density of random access resources, wherein the density of random access resources is used to indicate one of the following: the number of random access resource time-frequency positions corresponding to a cell discovery signal beam, the number of cell discovery signal beams corresponding to a random access resource time-frequency position, the number of random access signals corresponding to a cell discovery signal beam; the type of random access resources.

[0168] For the specific content of the random access time-frequency resource configuration, please refer to the description in the embodiment shown in FIG4 , which will not be repeated here.

[0169] In one implementation, the power configuration of the random access signal includes at least one of the following: a transmit power configuration of the random access signal; and a receive power threshold configuration of a cell discovery signal used in a random access process.

[0170] For specific content of the power configuration of the random access signal, please refer to the description in the embodiment shown in FIG4 , which will not be repeated here.

[0171] In one implementation, the transmit power configuration of the random access signal includes at least one of the following:

[0172] a target received power of the random access signal;

[0173] a power boost step size of the random access signal;

[0174] The maximum allowed transmit power of the random access signal.

[0175] For the specific content of the transmission power configuration of the random access signal, please refer to the description in the embodiment shown in FIG4 , which will not be repeated here.

[0176] In one implementation, the receiving power threshold configuration includes at least one of the following: a first receiving power threshold, used to indicate that the terminal determines, based on the first receiving power threshold, whether to evaluate the propagation loss between the network side device and the terminal based on the receiving power of the cell discovery signal beam currently providing service; a second receiving power threshold, used to indicate that the terminal determines, based on the second receiving power threshold, whether to select the random access resource on the auxiliary uplink carrier to send a random access signal; a third receiving power threshold, used to indicate that the terminal determines, based on the third receiving power threshold, whether to select to initiate a random access process based on a 2-step random access process; and a fourth receiving power threshold, used to indicate that the terminal determines, based on the fourth receiving power threshold, whether to allow initiation of a random access process based on a 4-step random access process.

[0177] For the specific content of the receiving power threshold configuration, please refer to the description in the embodiment shown in Figure 4, which will not be repeated here.

[0178] In one implementation, the random access control parameter configuration includes at least one of the following: a time length for monitoring a random access response message; a maximum sending resource for a random access signal; and backoff time information.

[0179] For the specific content of the random access control parameter configuration, please refer to the description in the embodiment shown in FIG4 , which will not be repeated here.

[0180] In one implementation, the backoff time information includes at least one of the following: a mapping relationship between a backoff time identifier and a backoff time value, and a backoff time indication. It is understandable that the network side device can provide a mapping relationship between a backoff time identifier and a backoff time value (backoff time table) and / or a backoff time indication by dimension, so that the network side device gives priority to providing access services for delay-sensitive services. For example, when the same backoff time table is used in different dimensions, when the access load is too heavy, the network side device can indicate the backoff time for providing services for non-delay-sensitive services, but not indicate the backoff time or indicate a smaller backoff time in the dimension for providing services for delay-sensitive services; the network side device can configure a backoff time table with a larger backoff time value for the dimension that provides services for non-delay-sensitive services. When the network side device indicates the same backoff time identifier in different dimensions, the backoff time value applicable to the terminal in the dimension that provides services for non-delay-sensitive services is greater than the backoff time value applicable to the terminal in the dimension that provides services for delay-sensitive services.

[0181] In an optional implementation, in S810, the network side device determines the random access configuration of each dimension of the target cell, which may include: the network side device determines the random access resources configured for each dimension based on the service density of each dimension, wherein the dimension with greater service density has more random access resources configured.

[0182] In this implementation, the network-side device can configure more random access resources for service-intensive dimensions, such as configuring more random access resource time-frequency positions or random access signals for each cell discovery signal beam in that dimension; while configuring fewer random access resource time-frequency positions or fewer random access signals for each cell discovery signal beam in service-sparse dimensions. This can improve the efficiency of random access resource utilization and provide better user experience from the perspective of the entire cell, thereby controlling network operating costs.

[0183] In an optional implementation, the network-side device determining the random access configuration for each dimension of the target cell may include: the network-side device determining the power configuration of the random access signal for each dimension based on the channel environment for each dimension or the sensitivity of the service to access delay. In this implementation, the network-side device determines the power configuration of the random access signal for each dimension based on the channel environment for each dimension or the sensitivity of the service to access delay, so that the power information of the random access signal configured for each dimension can meet the actual requirements of each dimension.

[0184] In one embodiment, the network side device determines the power configuration of the random access signal in each dimension according to the channel environment of each dimension or the sensitivity of the service to the access delay, which may include: the network side device determines the target receiving power of the random access signal in each dimension according to the noise and interference level felt by the network side device during the random access process of each dimension. In this embodiment, the network side device configures the target receiving power of the random access signal (for example, random access preamble) by dimension. When the terminal sends a random access signal in one dimension, it can estimate the transmission power of the random access signal based on the target receiving power of the random access signal in this dimension, and use this transmission power to send the random access signal. Through this embodiment, the network side device can determine the appropriate random access signal receiving power according to the noise and interference level felt by the network side device during the random access process of each dimension, and optimize the detection probability of the random access signal and the interference to the neighboring cells caused by random access.

[0185] In one embodiment, the network side device determines the power configuration of the random access signal in each dimension according to the channel environment of each dimension or the sensitivity of the service to the access delay, which may include: the network side device determines the power boost step of the random access signal in each dimension according to the sensitivity of the service in each dimension to the access delay. In this embodiment, the network side device can configure the power boost step (dB) of the random access signal (such as random access preamble) according to each dimension. For example, when the service in one dimension is sensitive to the access delay, the network side device can configure a larger power boost step of the random access signal, so that when the terminal does not receive a random access response from the network side device when sending the random access signal the previous time, it can increase the transmission power when sending the random access signal again, thereby improving the probability of the network side device detecting the random access signal and shortening the access delay.

[0186] In one embodiment, the network side device determines the power configuration of the random access signal in each dimension according to the channel environment of each dimension or the sensitivity of the service to the access delay, which may include: the network side device determines the receiving power threshold configuration of the cell discovery signal used in the random access process in each dimension according to the network environment of each dimension. Different dimensions have different coverage distances, or there are also differences in the uplink and downlink interference levels. In this embodiment, the receiving power threshold of the cell discovery signal used in the random access process in each dimension is configured according to the network environment of each dimension, thereby optimizing the access performance of the terminal.

[0187] For example, the network-side device can configure the first receiving power threshold of the cell discovery signal in each dimension separately according to the dimension. The terminal can determine whether the propagation loss between the network-side device and the UE can be evaluated based on the received power of the cell discovery signal beam currently providing service according to the first receiving power threshold. If the received power of the cell discovery signal beam currently providing service is higher than the first threshold, the UE can evaluate the propagation loss between the network-side device and the UE based on the received power of this cell discovery signal beam. Otherwise, the UE cannot evaluate the propagation loss between the network-side device and the UE based on the received power of this cell discovery signal beam.

[0188] For another example, the network-side device can configure the second receiving power threshold of the cell discovery signal in each dimension separately according to the dimension. The UE can determine whether to select the random access resource on the auxiliary uplink carrier to send the random access signal based on the second receiving power threshold. For example, in the dimension where dense pure uplink receiving sites are deployed, a lower second receiving power threshold can be configured. When the receiving power of the cell discovery signal beam currently providing service is higher than the second threshold, the random access resource on the high-frequency uplink carrier is selected to send the random access signal. Otherwise, the random access resource on the auxiliary uplink carrier (lower frequency) is used to send the random access signal.

[0189] For another example, the network-side device can configure the third receiving power threshold of each cell discovery signal separately according to the dimension. The UE can determine whether to choose to initiate a random access process based on the 2Step-RACH process based on the third receiving power threshold. For example, when the UE is in the first dimension, the third receiving power threshold configured by the base station for the first dimension is X dB. When the reference signal received power (RSRP) of the cell discovery signal measured by the UE is higher than X dB, random access can be initiated based on the 2Step-RACH process. Otherwise, the UE can only select other random access processes, such as the 4Step-RACH process, to initiate random access.

[0190] For another example, the network-side device can configure the fourth receive power threshold of each cell discovery signal according to the dimension. The UE can determine whether to initiate a random access process based on the 4-Step-RACH process based on the fourth receive power threshold. For example, when the UE is in the first dimension, the base station configures the fourth receive power threshold for the first dimension as Y dB. When the RSRP of the cell discovery signal measured by the UE is higher than Y dB, random access can be initiated based on the 4-Step-RACH process. Otherwise, the UE can only select other random access processes, such as the 2-Step-RACH process, to initiate random access.

[0191] In an optional implementation, the network-side device determining the random access configuration for each dimension of the target cell may include: the network-side device determining the random access control parameter configuration for each dimension based on the service type or access load of each dimension. In this implementation, the network-side device determines the random access control parameter configuration for each dimension based on the service type or access load of each dimension of the target cell.

[0192] In one embodiment, the network-side device determines the random access control parameter configuration for each dimension based on the service or access load in each dimension, which may include: the network-side device determines the time length for monitoring the random access response message in each dimension based on at least one of the access load in each dimension, the service priority, and the sensitivity of the service to access delay. In this embodiment, the network-side device may configure the time window length for the terminal to monitor the corresponding random access response message after sending a random access signal (random access preamble) or a random access signal and an accompanying physical uplink shared channel (PUSCH). The network-side device may set the time window length based on the random access load, service priority, and the sensitivity of the service to random access delay in different dimensions. Through this embodiment, the network-side device may set the time length for the dimension with higher service priority or delay-sensitive service to be shorter, and set the time length for the dimension with lower service priority or delay-insensitive service to be longer, so that random access triggered by higher service priority or delay-sensitive service can be prioritized.

[0193] In one embodiment, the network side device determines the random access control parameter configuration of each dimension according to the service or access load of each dimension, which may include: the network side device determines the maximum number of transmissions of the random access signal of each dimension according to the access load or service type of each dimension. In this embodiment, the maximum number of transmissions includes the maximum number of PRACH transmissions used to limit at least one of establishing a Radio Resource Control (RRC) connection, reestablishing an RRC connection, and restoring an RRC connection. For example, the network side device may set the maximum number of transmissions of the dimension with a larger access load to a smaller value to avoid the terminal repeatedly sending random access signals multiple times, resulting in a further increase in the load of the dimension, and set the maximum number of transmissions of the dimension with a smaller access load to a larger value to ensure that the terminal can access the network.

[0194] In one embodiment, the network side device determines the random access control parameter configuration of each dimension based on the service or access load of each dimension, which may include: the network side device determines the backoff time information of each dimension based on the access load of each dimension or the sensitivity of the service to the access delay.

[0195] Optionally, the backoff time information includes at least one of the following: a mapping relationship between a backoff time identifier and a backoff time value, and a backoff time indication. The mapping relationships in each dimension may be the same or different. For example, the backoff time applicable to UEs in the dimension in which the network-side device provides services for non-delay-sensitive services is greater than the backoff time applicable to UEs in the dimension in which the network-side device provides services for delay-sensitive services, thereby reducing the delay of delay-sensitive services.

[0196] In an optional implementation, the network-side device determining the random access configuration for each dimension of the target cell may include: the network-side device determining the size indication configuration of Message 3 in the random access process for each dimension according to the service type or access load of each dimension. In this implementation, taking into account the different service types and loads of different dimensions, the network-side device may configure Msg3 size thresholds for different dimensions respectively, and the UE determines the corresponding random access preamble group based on the Msg3 size threshold and the actual size of Msg3, and selects a random access preamble from the group to perform random access.

[0197] In one implementation, the network side device determines the random access configuration of each dimension of the target cell, and also includes: for any one of the dimensions, the network side device evenly distributes the random access resources of the dimension among at least one cell discovery signal beam of the dimension, thereby ensuring that the random access resources between each cell discovery signal beam in the same dimension are evenly distributed.

[0198] In one implementation, the random access configuration information sent by the network side device may include one of the following (1)-(4):

[0199] (1) The network-side device sends a random access configuration dedicated to the target dimension to the terminal of the target dimension.

[0200] In this implementation, the network-side device can send the random access configuration applicable to this dimension in each dimension, and can also send the random access time-frequency resource configuration of other dimensions in one dimension. Each dimension has a random access configuration, and the random access configuration includes random access time-frequency resource configuration, random access control parameters, etc. The terminal can receive the random access time-frequency resource configuration of the dimension according to the dimension to which the signal beam belongs to the currently selected cell. When the UE needs the network-side device to provide access services, it determines the random access resources according to the random access time-frequency resource configuration of the dimension, initiates the random access process, and uses the corresponding control parameters in the random access process.

[0201] (2) The network side device sends a first random access configuration common to the target cell to the terminal of the target cell, and sends a second random access configuration dedicated to the target dimension to the terminal of the target dimension, wherein the second random access configuration includes at least one of the following: a partial configuration not provided in the first random access configuration, and a configuration used to replace a partial configuration in the first random access configuration.

[0202] In this implementation, the network-side device provides a universal random access configuration, namely a first random access configuration, for the target cell, which is applicable to all dimensions in the target cell and may also be applicable to all dimensions in other cells; at the same time, the network-side device may provide a dedicated random access configuration for each dimension, partial dimension, or a certain dimension, and the configuration is dedicated to the dedicated random access parameters of this dimension, which may include partial configuration not provided by the first random access configuration, or a configuration used to replace partial configuration in the first random access configuration, and the universal random access configuration and the dimension-specific random access configuration respectively include random access time-frequency resource configuration parameters or random access control parameters. After the terminal receives the first random access configuration and the dedicated second random access configuration of the target dimension, when performing random access in the target dimension, it may preferentially perform the random access process based on the parameters provided by the dedicated second random access configuration; for parameters that are not configured in the dedicated second random access configuration, the terminal may use the configuration value provided by the first random access configuration.

[0203] (3) The network side device sends a third random access configuration common to the target cell to the terminal of the target cell, and sends a fourth random access configuration dedicated to the target dimension to the terminal of the target dimension, wherein the terminal uses one of the third random access configuration and the fourth random access configuration to perform a random access process.

[0204] In this implementation, the network side device provides a general random access configuration, namely the third random access configuration, for the target cell, which can be used for random access of terminals of all dimensions within the target cell, and can also be used for random access of terminals of all dimensions in other cells; at the same time, the network side device can provide a dedicated random access configuration, namely the fourth random access configuration, for each dimension, part of the dimensions, or a certain dimension. The fourth random access configuration is only provided for terminals of the target dimension to perform random access; when the terminal initiates a random access process in the target dimension, it can choose to perform the random access process based on the third random access configuration or the fourth random access configuration.

[0205] When a dimension is configured with both a general random access configuration and a dedicated random access configuration, the UE in this dimension shall preferentially select the dedicated random access configuration to perform random access.

[0206] When a UE fails to access based on a dedicated random access configuration, it can choose to access using a general random access configuration.

[0207] (4) The network-side device sends the random access configuration information to the terminal of the target cell, wherein the random access configuration information includes random access configurations of various dimensions of the target cell.

[0208] In this implementation, the random access configuration information may include dedicated random access configurations for each dimension of the target cell, for example, the universal random access configuration and dedicated random access configuration in the above implementations (2) and (3) for each dimension. In this way, after receiving the random access configuration information, the terminal obtains the random access configuration applicable to the target dimension from the random access configuration information according to the dimension in which it is located and performs random access.

[0209] Through the above method provided in the embodiment of the present application, differentiated random access configuration is achieved according to the cell dimension, the utilization efficiency of random access resources is improved, and the user access experience is improved.

[0210] The random access method for a cell provided in the embodiment of the present application may be performed by a random access device for the cell. The random access device for a cell performing the random access method for the cell is used as an example to illustrate the random access device for the cell provided in the embodiment of the present application.

[0211] FIG9 shows a schematic structural diagram of a random access device for a cell provided in an embodiment of the present application. As shown in FIG9 , the random access device 900 for a cell includes: a receiving module 910 and an executing module 920 .

[0212] In this embodiment, a receiving module 910 is configured to receive random access configuration information from a network-side device, wherein the random access configuration information includes a random access configuration of a target dimension of a target cell, where the target dimension is the dimension in which the terminal is located; and an execution module 920 is configured to execute a random access procedure in the target cell dimension based on the random access configuration of the target dimension; wherein the target cell includes at least one dimension, and one dimension in the at least one dimension corresponds to at least one of the following:

[0213] at least one sub-area of ​​the target cell;

[0214] at least one subspace of the target cell;

[0215] at least one sub-cell of the target cell;

[0216] the coverage of at least some of the multiple beams of the target cell;

[0217] A beam set includes coverage of at least part of the multiple beams of the target cell.

[0218] In one implementation, the random access configuration includes at least one of the following:

[0219] Random access time-frequency resource configuration;

[0220] Power configuration of random access signals;

[0221] Random access control parameter configuration;

[0222] The size of Message 3 in the random access procedure indicates the configuration.

[0223] In one implementation, the random access time-frequency resource configuration includes at least one of the following:

[0224] The density of random access resources is used to indicate one of the following: the number of random access resource time-frequency positions corresponding to a cell discovery signal beam, the number of cell discovery signal beams corresponding to a random access resource time-frequency position, and the number of random access signals corresponding to a cell discovery signal beam;

[0225] The type of random access resource.

[0226] In one implementation, the power configuration of the random access signal includes at least one of the following:

[0227] Transmit power configuration of random access signals;

[0228] Configure the receive power threshold of the cell discovery signal used during random access.

[0229] In one implementation, the transmit power configuration of the random access signal includes at least one of the following:

[0230] a target received power of the random access signal;

[0231] a power boost step size of the random access signal;

[0232] The maximum allowed transmit power of the random access signal.

[0233] In one implementation, the receiving power threshold configuration includes at least one of the following:

[0234] A first receiving power threshold is used to instruct the terminal to determine, based on the first receiving power threshold, whether to evaluate the propagation loss between the network side device and the terminal based on the received power of the cell discovery signal beam currently providing service;

[0235] a second receiving power threshold, used to instruct the terminal to determine, based on the second receiving power threshold, whether to select a random access resource on the secondary uplink carrier to send a random access signal;

[0236] A third receiving power threshold is used to instruct the terminal to determine whether to select to initiate a random access procedure based on a two-step random access procedure based on the third receiving power threshold;

[0237] The fourth receiving power threshold is used to instruct the terminal to determine whether to allow initiation of a random access procedure based on a 4-step random access procedure based on the fourth receiving power threshold.

[0238] In one implementation, the random access control parameter configuration includes at least one of the following:

[0239] The length of time to monitor the random access response message;

[0240] The maximum number of times the random access signal is sent;

[0241] Backoff time information.

[0242] In one implementation, the receiving module 910 receiving the random access configuration information from the network side device includes one of the following:

[0243] Receiving a random access configuration specific to the target dimension from the network side device;

[0244] Receiving, from the network side device, a first random access configuration common to the target cell and a second random access configuration specific to the target dimension, wherein the second random access configuration includes at least one of the following: a partial configuration not provided in the first random access configuration, and a configuration used to replace the partial configuration in the first random access configuration;

[0245] Receiving, from the network-side device, a third random access configuration common to the target cell and a fourth random access configuration specific to the target dimension, wherein the terminal uses one of the third random access configuration and the fourth random access configuration to perform a random access procedure;

[0246] The random access configuration information is received from the network side device, wherein the random access configuration information includes random access configurations of various dimensions of the target cell.

[0247] The random access device of a cell in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component of an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal, or it can be a device other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and the other device can be a server, a network attached storage (NAS), etc., which is not specifically limited in the embodiments of the present application.

[0248] The random access device for a cell provided in the embodiment of the present application can implement the various processes implemented in the above-mentioned random access method embodiment for a cell and achieve the same technical effect. To avoid repetition, it will not be described here.

[0249] The random access configuration method provided in the embodiment of the present application may be executed by a random access configuration device. In the embodiment of the present application, the random access configuration device performing the random access configuration method is taken as an example to illustrate the random access configuration device provided in the embodiment of the present application.

[0250] FIG10 shows a schematic structural diagram of a random access configuration apparatus provided in an embodiment of the present application. As shown in FIG10 , the random access configuration apparatus 1000 includes: a determining module 1010 and a sending module 1020 .

[0251] In this embodiment, a determination module 1010 is configured to determine random access configurations for each dimension of a target cell, wherein the target cell includes at least one dimension, and random access configurations for different dimensions are configured separately; a sending module 1020 is configured to send random access configuration information, wherein the random access configuration information includes a random access configuration for a target dimension, and the target dimension is any one of the at least one dimension; wherein one dimension in the at least one dimension corresponds to at least one of the following:

[0252] at least one sub-area of ​​the target cell;

[0253] at least one subspace of the target cell;

[0254] at least one sub-cell of the target cell;

[0255] the coverage of at least some of the multiple beams of the target cell;

[0256] A beam set includes coverage of at least part of the multiple beams of the target cell.

[0257] In one implementation, the random access configuration includes at least one of the following:

[0258] Random access time-frequency resource configuration;

[0259] Power configuration of random access signals;

[0260] Random access control parameter configuration;

[0261] The size of Message 3 in the random access procedure indicates the configuration.

[0262] In one implementation, the random access time-frequency resource configuration includes at least one of the following:

[0263] The density of random access resources is used to indicate one of the following: the number of random access resource time-frequency positions corresponding to a cell discovery signal beam, the number of cell discovery signal beams corresponding to a random access resource time-frequency position, and the number of random access signals corresponding to a cell discovery signal beam;

[0264] The type of random access resource.

[0265] In one implementation, the power configuration of the random access signal includes at least one of the following:

[0266] Transmit power configuration of random access signals;

[0267] Configure the receive power threshold of the cell discovery signal used during random access.

[0268] In one implementation, the transmit power configuration of the random access signal includes at least one of the following:

[0269] a target received power of the random access signal;

[0270] a power boost step size of the random access signal;

[0271] The maximum allowed transmit power of the random access signal.

[0272] In one implementation, the receiving power threshold configuration includes at least one of the following:

[0273] A first receiving power threshold is used to instruct the terminal to determine, based on the first receiving power threshold, whether to evaluate the propagation loss between the network side device and the terminal based on the received power of the cell discovery signal beam currently providing service;

[0274] a second receiving power threshold, used to instruct the terminal to determine, based on the second receiving power threshold, whether to select a random access resource on the secondary uplink carrier to send a random access signal;

[0275] A third receiving power threshold is used to instruct the terminal to determine whether to select to initiate a random access procedure based on a two-step random access procedure based on the third receiving power threshold;

[0276] The fourth receiving power threshold is used to instruct the terminal to determine whether to allow initiation of a random access procedure based on a 4-step random access procedure based on the fourth receiving power threshold.

[0277] In one implementation, the random access control parameter configuration includes at least one of the following:

[0278] The length of time to monitor the random access response message;

[0279] Maximum transmission resource for random access signals;

[0280] Backoff time information.

[0281] In one implementation, the determining module 1010 determines the random access configuration of each dimension of the target cell, including at least one of the following:

[0282] Determining random access resources configured for each dimension based on the service density of each dimension, wherein a dimension with a greater service density is configured with more random access resources;

[0283] Determining the power configuration of the random access signal in each dimension according to the channel environment in each dimension or the sensitivity of the service to the access delay;

[0284] Determining a random access control parameter configuration for each dimension according to a service type or access load for each dimension;

[0285] According to the service type or access load of each dimension, the size indication configuration of the message 3 in the random access process of each dimension is determined.

[0286] In one implementation, the determining module determines the power configuration of the random access signal in each dimension based on the channel environment in each dimension or the sensitivity of the service to the access delay, including at least one of the following:

[0287] Determining a target received power of a random access signal in each dimension according to a noise and interference level felt by the network-side device during the random access process in each dimension;

[0288] Determining a power boost step size of a random access signal in each dimension according to the sensitivity of the service in each dimension to the access delay;

[0289] According to the network environment of each dimension, a receiving power threshold configuration of a cell discovery signal used in a random access process of each dimension is determined.

[0290] In one implementation, determining the random access control parameter configuration for each dimension according to the service type or access load of each dimension includes at least one of the following:

[0291] Determining, based on at least one of the access load in each dimension, the service priority, and the sensitivity of the service to the access delay, a time length for monitoring the random access response message in each dimension;

[0292] Determining a maximum number of times the random access signal is sent in each dimension according to the access load or service type in each dimension;

[0293] The backoff time information of each dimension is determined according to the access load of each dimension or the sensitivity of the service to the access delay.

[0294] In one implementation, the backoff time information includes at least one of the following: a mapping relationship between a backoff time identifier and a backoff time value, and a backoff time indication.

[0295] In one implementation, the determination module 1010 determines the random access configuration of each dimension of the target cell, and also includes: for any one of the dimensions, evenly distributing the random access resources of the dimension among at least one cell discovery signal beam of the dimension.

[0296] In one implementation, the sending module 1020 sends the random access configuration information, including one of the following:

[0297] Sending a random access configuration dedicated to the target dimension to the terminal of the target dimension;

[0298] Sending a first random access configuration common to the target cell to the terminal of the target cell, and sending a second random access configuration dedicated to the target dimension to the terminal of the target dimension, wherein the second random access configuration includes at least one of the following: a partial configuration not provided in the first random access configuration, and a configuration used to replace a partial configuration in the first random access configuration;

[0299] Sending a third random access configuration common to the target cell to the terminal of the target cell, and sending a fourth random access configuration specific to the target dimension to the terminal of the target dimension, wherein the terminal uses one of the third random access configuration and the fourth random access configuration to perform a random access procedure;

[0300] The random access configuration information is sent to the terminal of the target cell, wherein the random access configuration information includes random access configurations of various dimensions of the target cell.

[0301] The random access configuration device provided in the embodiment of the present application can implement the various processes implemented in the above-mentioned random access configuration method embodiment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0302] Optionally, as shown in Figure 11, an embodiment of the present application also provides a communication device 1100, including a processor 1101 and a memory 1102, and the memory 1102 stores a program or instruction that can be run on the processor 1101. For example, when the communication device 1100 is a terminal, the program or instruction is executed by the processor 1101 to implement the various steps of the random access method embodiment of the above-mentioned cell, and can achieve the same technical effect, and can achieve the same technical effect. To avoid repetition, it is not repeated here; when the communication device 1100 is a network side device, the program or instruction is executed by the processor 1101 to implement the various steps of the random access configuration method embodiment, and can achieve the same technical effect. To avoid repetition, it is not repeated here.

[0303] The present application also provides a terminal including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG4 . This terminal embodiment corresponds to the aforementioned terminal-side method embodiment, and each implementation process and implementation method of the aforementioned method embodiment is applicable to this terminal embodiment and can achieve the same technical effects. Specifically, FIG12 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0304] The terminal 1200 includes but is not limited to: a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209 and at least some of the components of the processor 1210.

[0305] Those skilled in the art will appreciate that the terminal 1200 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 1210 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG12 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0306] It should be understood that in an embodiment of the present application, the input unit 1204 may include a graphics processing unit (GPU) 12041 and a microphone 12042, and the graphics processing unit 12041 processes image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1206 may include a display panel 12061, and the display panel 12061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1207 includes a touch panel 12071 and at least one of other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include two parts: a touch detection device and a touch controller. Other input devices 12072 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 repeated here.

[0307] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1201 may transmit the data to the processor 1210 for processing. Furthermore, the RF unit 1201 may send uplink data to the network-side device. Typically, the RF unit 1201 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0308] The memory 1209 can be used to store software programs or instructions and various data. The memory 1209 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1209 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 1209 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0309] Processor 1210 may include one or more processing units. Optionally, processor 1210 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1210.

[0310] The radio frequency unit 1201 is used to receive random access configuration information from a network side device, wherein the random access configuration information includes the random access configuration of the target dimension of the target cell, and the target dimension is the dimension where the terminal is located.

[0311] The processor 1210 is configured to perform a random access procedure in the target cell dimension based on the random access configuration of the target dimension;

[0312] The target cell includes at least one dimension, and one dimension of the at least one dimension corresponds to at least one of the following:

[0313] at least one sub-area of ​​the target cell;

[0314] at least one subspace of the target cell;

[0315] at least one sub-cell of the target cell;

[0316] the coverage of at least some of the multiple beams of the target cell;

[0317] A beam set includes coverage of at least part of the multiple beams of the target cell.

[0318] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the random access method of the cell in the method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0319] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG8 . This network-side device embodiment corresponds to the aforementioned network-side device method embodiment, and each implementation process and implementation method of the aforementioned method embodiment are applicable to this network-side device embodiment and can achieve the same technical effects.

[0320] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 13, network-side device 1300 includes an antenna 1301, a radio frequency device 1302, a baseband device 1303, a processor 1304, and a memory 1305. Antenna 1301 is connected to radio frequency device 1302. In the uplink direction, radio frequency device 1302 receives information via antenna 1301 and sends the received information to baseband device 1303 for processing. In the downlink direction, baseband device 1303 processes the information to be transmitted and sends it to radio frequency device 1302. Radio frequency device 1302 processes the received information and then sends it through antenna 1301.

[0321] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 1303 , which includes a baseband processor.

[0322] The baseband device 1303 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 13, one of which is, for example, a baseband processor, which is connected to the memory 1305 through a bus interface to call the program in the memory 1305 and execute the network device operations shown in the above method embodiment.

[0323] The network side device may further include a network interface 1306 , which is, for example, a Common Public Radio Interface (CPRI).

[0324] Specifically, the network side device 1300 of the embodiment of the present application also includes: instructions or programs stored in the memory 1305 and executable on the processor 1304. The processor 1304 calls the instructions or programs in the memory 1305 to execute the methods executed by the modules shown in FIG10 and achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[0325] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the method embodiment shown in Figure 4 or Figure 8 above are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0326] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0327] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the method embodiments shown in Figures 4 or 8 above, and can achieve the same technical effects. To avoid repetition, they will not be repeated here.

[0328] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0329] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the method embodiment shown in Figure 4 or Figure 8 above, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0330] An embodiment of the present application further provides a random access system, comprising: a terminal and a network-side device, wherein the terminal can be used to execute the steps of the random access method for a cell as described above, and the network-side device can be used to execute the steps of the random access configuration method as described above.

[0331] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be 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 opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0332] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0333] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A random access method for a cell, comprising: A terminal receives random access configuration information from a network - side device, where the random access configuration information includes random access configuration for a target dimension of a target cell, and the target dimension is the dimension where the terminal is located; The terminal performs a random access procedure in the target cell dimension based on the random access configuration for the target dimension; Wherein, the target cell includes at least one dimension, and one dimension in the at least one dimension corresponds to at least one of the following: At least one sub - region of the target cell; At least one subspace of the target cell; At least one sub - cell of the target cell; The coverage range of at least some of the multiple beams of the target cell; A beam set, where the beam set includes the coverage range of at least some of the multiple beams of the target cell.

2. The method according to claim 1, wherein The random access configuration includes at least one of the following: Random access time - frequency resource configuration; Power configuration of random access signals; Random access control parameter configuration; Size indication configuration of message 3 in the random access procedure.

3. The method according to claim 2, wherein The random access time - frequency resource configuration includes at least one of the following: The density of random access resources, where the density of random access resources is used to indicate one of the following: the number of random access resource time - frequency positions corresponding to a cell discovery signal beam, the number of cell discovery signal beams corresponding to a random access resource time - frequency position, the number of random access signals corresponding to a cell discovery signal beam; The type of random access resources.

4. The method according to claim 2, wherein, The power configuration of the random access signals includes at least one of the following: Transmission power configuration of random access signals; Receiving power threshold configuration of cell discovery signals used in the random access process.

5. The method according to claim 4, wherein, The transmission power configuration of the random access signals includes at least one of the following: The target receiving power of the random access signals; The power ramp - up step size of the random access signals; The maximum allowable transmission power of the random access signals.

6. The method according to claim 4, wherein The receiving power threshold configuration includes at least one of the following: A first receiving power threshold, used to indicate that the terminal determines whether to evaluate the propagation loss between the network - side device and the terminal based on the receiving power of the cell discovery signal beam currently providing service according to the first receiving power threshold; A second receiving power threshold, used to indicate that the terminal determines whether to select random access resources on an auxiliary uplink carrier to send random access signals according to the second receiving power threshold; A third receiving power threshold, used to indicate that the terminal determines whether to select to initiate a random access procedure based on a two - step random access procedure according to the third receiving power threshold; A fourth receiving power threshold, used to indicate that the terminal determines whether to allow initiating a random access procedure based on a four - step random access procedure according to the fourth receiving power threshold.

7. The method according to any one of claims 2 to 6, wherein, The random access control parameter configuration includes at least one of the following: The time length for monitoring random access response messages; The maximum number of times to send random access signals; Back - off time information.

8. The method according to claim 7, wherein The back - off time information includes at least one of the following: the mapping relationship between the back - off time identifier and the back - off time value, the back - off time indication.

9. The method according to any one of claims 1 to 8, wherein The terminal receives random access configuration information from a network - side device, including one of the following: The terminal receives the random access configuration dedicated to the target dimension from the network - side device; The terminal receives the first random access configuration common to the target cell and the second random access configuration dedicated to the target dimension from the network - side device, where the second random access configuration includes at least one of the following: parts of the configuration not provided in the first random access configuration, configurations used to replace parts of the configuration in the first random access configuration; The terminal receives the third random access configuration common to the target cell and the fourth random access configuration dedicated to the target dimension from the network - side device, where the terminal uses one of the third random access configuration and the fourth random access configuration to perform a random access procedure; The terminal receives the random access configuration information from the network - side device, where the random access configuration information includes the random access configurations of each dimension of the target cell.

10. A random access configuration method, including: The network - side device determines the random access configurations of each dimension of the target cell, where the target cell includes at least one dimension, and the random access configurations of different dimensions are configured separately; The network - side device sends random access configuration information, where the random access configuration information includes the random access configuration of the target dimension, and the target dimension is any one of the at least one dimension; Wherein, one dimension of the at least one dimension corresponds to at least one of the following: At least one sub - region of the target cell; At least one subspace of the target cell; At least one sub - cell of the target cell; At least some of the multiple beams of the target cell; A beam set, where the beam set includes at least some of the multiple beams of the target cell.

11. The method according to claim 10, wherein, The random access configuration includes at least one of the following: Random access time - frequency resource configuration; Power configuration of random access signals; Random access control parameter configuration; Size indication configuration of message 3 in the random access procedure.

12. The method according to claim 11, wherein, The random access time - frequency resource configuration includes at least one of the following: Density of random access resources, where the density of random access resources is used to indicate one of the following: the number of time - frequency positions of random access resources corresponding to a cell discovery signal beam, the number of cell discovery signal beams corresponding to a random access resource time - frequency position, the number of random access signals corresponding to a cell discovery signal beam; Type of random access resources.

13. The method according to claim 11, wherein The power configuration of random access signals includes at least one of the following: Transmission power configuration of random access signals; Receiving power threshold configuration of cell discovery signals used in the random access process.

14. The method according to claim 13, wherein The transmission power configuration of random access signals includes at least one of the following: Target receiving power of the random access signal; Power ramp - up step of the random access signal; Maximum allowable transmit power of the random access signal.

15. The method according to claim 13, wherein, The receiving power threshold configuration includes at least one of the following: The first received power threshold is used to indicate that the terminal determines whether to evaluate the propagation loss between the network - side device and the terminal based on the received power of the cell discovery signal beam that currently provides services, based on the first received power threshold; The second received power threshold is used to indicate that the terminal determines whether to select a random access resource on the secondary uplink carrier to send a random access signal, based on the second received power threshold; The third received power threshold is used to indicate that the terminal determines whether to select to initiate a random access procedure based on a two - step random access procedure, based on the third received power threshold; The fourth received power threshold is used to indicate that the terminal determines whether to allow a random access procedure to be initiated based on a four - step random access procedure, based on the fourth received power threshold.

16. The method according to any one of claims 11 to 15, wherein, The random access control parameter configuration includes at least one of the following: The time length for monitoring the random access response message; The maximum transmission resource of the random access signal; The backoff time information.

17. The method according to any one of claims 10 to 16, wherein, The network - side device determines the random access configuration for each dimension of the target cell, including at least one of the following: The network - side device determines the random access resources configured for each dimension based on the service density of each dimension, where the higher the service density of a dimension, the more random access resources are configured for that dimension; The network - side device determines the power configuration of the random access signal for each dimension according to the channel environment of each dimension or the sensitivity of the service to the access delay; The network - side device determines the random access control parameter configuration for each dimension according to the service type or access load of each dimension; The network - side device determines the size indication configuration of message 3 in the random access procedure for each dimension according to the service type or access load of each dimension.

18. The method according to claim 17, wherein, The network - side device determines the power configuration of the random access signal for each dimension according to the channel environment of each dimension or the sensitivity of the service to the access delay, including at least one of the following: The network - side device determines the target received power of the random access signal for each dimension according to the noise and interference level felt by the network - side device during the random access process in each dimension; The network - side device determines the power boost step size of the random access signal for each dimension according to the sensitivity of the service to the access delay in each dimension; The network - side device determines the received power threshold configuration of the cell discovery signal used during the random access process for each dimension according to the network environment of each dimension.

19. The method according to claim 17, wherein, The network - side device determines the random access control parameter configuration for each dimension according to the service or access load of each dimension, including at least one of the following: The network - side device determines the time length for monitoring the random access response message for each dimension according to at least one of the access load, service priority, and sensitivity of the service to the access delay in each dimension; The network - side device determines the maximum number of transmissions of the random access signal for each dimension according to the access load or service type of each dimension; The network-side device determines the backoff time information for each dimension according to the access load in each dimension or the sensitivity of the service to the access delay.

20. The method according to any one of claims 10 to 19, wherein, The network-side device determining the random access configuration for each dimension of the target cell further includes: For any one of the dimensions, the network-side device evenly distributes the random access resources of the dimension among at least one cell discovery signal beam of the dimension.

21. The method according to any one of claims 10 to 20, wherein The network-side device sending the random access configuration information includes one of the following: The network-side device sends the random access configuration dedicated to the target dimension to the terminal of the target dimension. The network-side device sends the first random access configuration common to the target cell to the terminals of the target cell, and sends the second random access configuration dedicated to the target dimension to the terminals of the target dimension, where the second random access configuration includes at least one of the following: the partial configuration not provided in the first random access configuration, the configuration used to replace the partial configuration in the first random access configuration. The network-side device sends the third random access configuration common to the target cell to the terminals of the target cell, and sends the fourth random access configuration dedicated to the target dimension to the terminals of the target dimension, where the terminal uses one of the third random access configuration and the fourth random access configuration to perform the random access procedure. The network-side device sends the random access configuration information to the terminals of the target cell, where the random access configuration information includes the random access configuration for each dimension of the target cell.

22. A random access device for a cell, comprising: A receiving module, configured to receive random access configuration information from a network-side device, where the random access configuration information includes the random access configuration for the target dimension of the target cell, and the target dimension is the dimension where the terminal is located. An execution module, configured to perform a random access procedure in the target cell dimension based on the random access configuration of the target dimension. Wherein, the target cell includes at least one dimension, and one of the at least one dimension corresponds to at least one of the following: At least one sub-region of the target cell; At least one subspace of the target cell; At least one sub-cell of the target cell; The coverage range of at least some of the multiple beams of the target cell; A beam set, where the beam set includes the coverage range of at least some of the multiple beams of the target cell.

23. The apparatus according to claim 22, wherein, The receiving module receiving the random access configuration information from the network-side device includes one of the following: Receiving the random access configuration dedicated to the target dimension from the network-side device; Receiving the first random access configuration common to the target cell and the second random access configuration dedicated to the target dimension from the network-side device, where the second random access configuration includes at least one of the following: the partial configuration not provided in the first random access configuration, the configuration used to replace the partial configuration in the first random access configuration. Receive, from the network-side device, a third random access configuration common to the target cell and a fourth random access configuration dedicated to the target dimension, where the terminal performs a random access procedure using one of the third random access configuration and the fourth random access configuration; Receive, from the network-side device, the random access configuration information, where the random access configuration information includes random access configurations for each dimension of the target cell.

24. A random access configuration device, comprising: A determination module, configured to determine random access configurations for each dimension of a target cell, where the target cell includes at least one dimension, and the random access configurations for different dimensions are configured separately; A sending module, configured to send random access configuration information, where the random access configuration information includes a random access configuration for a target dimension, and the target dimension is any one of the at least one dimension; Wherein, one dimension of the at least one dimension corresponds to at least one of the following: At least one sub-region of the target cell; At least one subspace of the target cell; At least one sub-cell of the target cell; The coverage range of at least some of the multiple beams of the target cell; A beam set, where the beam set includes the coverage range of at least some of the multiple beams of the target cell.

25. The device according to claim 24, wherein, The determination module determines random access configurations for each dimension of the target cell, including at least one of the following: Determine random access resources configured for each dimension based on the traffic density of each dimension, where the higher the traffic density of a dimension, the more random access resources are configured for that dimension; Determine the power configuration of the random access signal for each dimension according to the channel environment of each dimension or the sensitivity of the service to the access delay; Determine the random access control parameter configuration for each dimension according to the service type or access load of each dimension; Determine the size indication configuration of message 3 in the random access procedure for each dimension according to the service type or access load of each dimension.

26. The apparatus according to claim 25, wherein, The determination module determines the power configuration of the random access signal for each dimension according to the channel environment of each dimension or the sensitivity of the service to the access delay, including at least one of the following: Determine the target received power of the random access signal for each dimension according to the noise and interference levels sensed by the network-side device during the random access process in each dimension; Determine the power ramp step of the random access signal for each dimension according to the sensitivity of the service to the access delay in each dimension; Determine the received power threshold configuration of the cell discovery signal used during the random access process for each dimension according to the network environment of each dimension.

27. The apparatus according to claim 25, wherein, The determination of the random access control parameter configuration for each dimension according to the service type or access load of each dimension includes at least one of the following: Determine the time length for monitoring the random access response message for each dimension according to at least one of the access load, service priority, and sensitivity of the service to the access delay in each dimension; Determine the maximum number of transmissions of the random access signal for each of the said dimensions according to the access load or service type of each of the said dimensions; Determine the backoff time information for each of the said dimensions according to the access load of each dimension or the sensitivity of the service to the access delay.

28. The apparatus according to claim 25, wherein, The determining module determines the random access configuration for each dimension of the target cell, and further includes: For any one of the said dimensions, evenly distribute the random access resources of the dimension among at least one cell discovery signal beam of the dimension.

29. The apparatus according to any one of claims 24 to 28, wherein, The sending module sends the random access configuration information, including one of the following: Send the random access configuration dedicated to the target dimension to the terminal of the target dimension; Send the first random access configuration common to the target cell to the terminal of the target cell, and send the second random access configuration dedicated to the target dimension to the terminal of the target dimension, where the second random access configuration includes at least one of the following: partial configurations not provided in the first random access configuration, configurations used to replace partial configurations in the first random access configuration; Send the third random access configuration common to the target cell to the terminal of the target cell, and send the fourth random access configuration dedicated to the target dimension to the terminal of the target dimension, where the terminal uses one of the third random access configuration and the fourth random access configuration to execute the random access procedure; Send the random access configuration information to the terminal of the target cell, where the random access configuration information includes the random access configuration for each dimension of the target cell.

30. A terminal, comprising a processor and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the random access method of the cell according to any one of claims 1 to 8 are implemented.

31. A network-side device, comprising a processor and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the random access configuration method according to any one of claims 9 to 21 are implemented.

32. A readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the random access method of the cell according to any one of claims 1-8 is implemented, or the steps of the random access configuration method according to any one of claims 9 to 21 are implemented.

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