Random access method of cell, terminal and network side equipment

Abstract

The invention discloses a random access method of a cell, a terminal and network side equipment, and belongs to the technical field of wireless communication, the random access method of the cell in the embodiment of the invention comprises the following steps: the terminal receives random access configuration information from the network side equipment, the random access configuration information comprises random access configuration of a target dimension of a target cell, and the target dimension is the dimension where the terminal is located; the terminal executes a random access process in a target cell dimension based on the random access configuration of the target dimension; wherein the target cell comprises at least one dimension, and one dimension in the at least one dimension corresponds to at least one of the following dimensions: 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 area of at least part of beams in the plurality of beams of the target cell; and a set of beams, the set of beams comprising a coverage of at least a portion of the plurality of beams of the target cell.

Description

Technical Field

[0001] This application belongs to the field of wireless communication technologies, and particularly relates to a random access method for a cell, a terminal, and a network-side device. Background Art

[0002] In a New Radio (NR) system, the random access resources and access mechanism are provided with configurations applicable to a cell by System Information Block (SIB) 1, and terminals within the cell execute the random access procedure according to the configurations.

[0003] However, in related technologies, no effective solution has been given on how to configure the random access of a cell. Summary of the Invention

[0004] Embodiments of this application provide a random access method for a cell, a terminal, and a network-side device, which can implement the configuration of the random access of a cell.

[0005] In a first aspect, a random access method for a cell is provided, which is executed by a terminal. The method includes: the terminal receives random access configuration information from a network-side device, where the random access configuration information includes the random access configuration of a target dimension of a target cell, and the target dimension is the dimension where the terminal is located; the terminal executes a random access procedure in the target cell dimension based on the random access configuration of the target dimension; where 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.

[0006] In a second aspect, a random access configuration method is provided, which is executed by a network-side device. The method includes: the network-side device determines the random access configuration of each dimension of a 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 a target dimension, and the target dimension is any one of the at least one dimension; where 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; 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.

[0007] In a third aspect, a random access device for a cell is provided, including: a receiving module, configured to receive random access configuration information from a network-side device, where 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 where the terminal is located; an execution module, configured to execute a random access procedure in the target cell dimension based on the random access configuration of the target dimension; where 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; coverage ranges of at least some of a plurality of beams of the target cell; a beam set, where the beam set includes coverage ranges of at least some of a plurality of beams of the target cell.

[0008] In a fourth aspect, a random access configuration device is provided, including: a determination module, configured to determine random access configurations of each dimension of a target cell, where the target cell includes at least one dimension, and the random access configurations of 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 of a target dimension, and the target dimension is any one of the at least one dimension; where 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; coverage ranges of at least some of a plurality of beams of the target cell; a beam set, where the beam set includes coverage ranges of at least some of a plurality of beams of the target cell.

[0009] In a fifth aspect, a terminal is provided, which includes a processor and a memory, where 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.

[0010] In a sixth aspect, a terminal is provided, including a processor and a communication interface, where the processor is configured to implement the steps of the method described in the first aspect, and the communication interface is configured to be coupled to the processor.

[0011] In a seventh aspect, a network-side device is provided, which includes a processor and a memory, where 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 second aspect are implemented.

[0012] In an eighth aspect, a network-side device is provided, including a processor and a communication interface. The processor is configured to implement the steps of the method described in the second aspect, and the communication interface is used to couple with the processor.

[0013] In a ninth aspect, a readable storage medium is provided. A program or instructions are stored on the readable storage medium, and when the program or instructions are 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.

[0014] In a tenth aspect, a wireless communication system is provided, including: a terminal and a network-side device. 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.

[0015] In an eleventh aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled with the processor, and the processor is configured to run a program or instructions to implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0016] In a twelfth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0017] In the embodiments of the present application, the terminal receives random access configuration information from the network-side device, and based on the random access configuration of the target dimension in the received random access configuration information, executes the random access process in the target cell dimension. 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; the target cell includes at least one dimension, and 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, and the beam set includes the coverage range of at least some of the multiple beams of the target cell. Thus, terminals in different dimensions within the same cell can execute the random access process according to the random access configuration of the dimension where they are located, and the random access configuration of the target cell is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A block diagram of a wireless communication system to which the embodiments of the present application can be applied is shown;

[0019] Figure 2 A schematic diagram of a random access process provided by the embodiments of the present application is shown;

[0020] Figure 3 Shows a schematic diagram of another random access process provided by an embodiment of the present application;

[0021] Figure 4 Shows a schematic diagram of the process of a random access method for a cell provided by an embodiment of the present application;

[0022] Figure 5 Shows a schematic diagram of a multi-dimensional cell provided by an embodiment of the present application;

[0023] Figure 6 Shows a schematic diagram of another multi-dimensional cell provided by an embodiment of the present application;

[0024] Figure 7 Shows a schematic diagram of yet another multi-dimensional cell provided by an embodiment of the present application;

[0025] Figure 8 Shows a schematic diagram of the process of a random access configuration method provided by an embodiment of the present application;

[0026] Figure 9 Shows a schematic diagram of the structure of a random access device for a cell provided by an embodiment of the present application;

[0027] Figure 10 Shows a schematic diagram of the structure of a random access configuration device provided by an embodiment of the present application;

[0028] Figure 11 Shows a schematic diagram of the structure of a communication device provided by an embodiment of the present application;

[0029] Figure 12 Shows a schematic diagram of the hardware structure of a terminal provided by an embodiment of the present application;

[0030] Figure 13 Shows a schematic diagram of the hardware structure of a network-side device provided by an embodiment of the present application. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, rather than all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present application.

[0032] The terms "first", "second", etc. in this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of this 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 category, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "or" in this application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0033] The term "indication" in this application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly informs the receiver of specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0034] It is worth noting that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and uses NR terms in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th generation (6 thGeneration, 6G) communication system.

[0035] Figure 1A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), a game console, a personal computer (PC), a teller machine or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be referred to as a radio access network (RAN) device, a radio access network function or a radio access network unit. The access network device can 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, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0036] The core network device may include but is not limited to at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), Binding Support Function (BSF), Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), etc. It should be noted that in the embodiments of this application, only the core network devices in the NR system are taken as examples for introduction, and the specific types of core network devices are not limited.

[0037] To better understand the technical solution provided in this application, the related technologies involved in this application are first introduced.

[0038] I. NR Random Access Configuration

[0039] 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. The uplink random access resources are evenly distributed among different SSB beams or SSB beam sets. The random access resources include the time-frequency position (PRACH occasion, PO) for transmitting the Physical Random Access Channel (PRACH) and the random access signal PRACH preamble. Multiple POs can be allocated to one SSB beam, or one SSB beam set can share one PO.

[0040] As Figure 2 shown, the traditional Random Access Channel (RACH) procedure consists of 4 steps of the random access procedure. The UE sends a PRACH Preamble to the base station. The UE receives a Random Access Response (RAR) from the base station, determines the uplink transmission time based on the timing advance carried therein, and sends Msg3 according to the scheduling configuration carried therein, carrying identity information and service request information in Msg3. Finally, the UE receives contention resolution information from the base station, marking the completion of the random access procedure. In addition, as Figure 3 shown, NR also supports a 2-step random access procedure. In the first step, the UE sends the PRACH preamble and Msg3 PUSCH to the base station. In the second step, it receives a response message from the base station, including an indication of the timing adjustment information (Time Advance) and access success (i.e., the identity of the UE). If the received identity of the UE matches its own identity, it indicates successful access to the network.

[0041] For the 2-Step RACH procedure and the 4-Step RACH procedure, the random access resources of an NR cell are evenly distributed among the SSB beams.

[0042] In addition, currently the base station can configure the UE to indicate the size of Msg3 with a random access signal (random access preamble) group. When the size of Msg3 is less than a preset threshold, the random access signal of Group A is used, otherwise the random access signal of Group B is used. The base station determines the size of Msg3 based on whether the received random access signal belongs to Group A or Group B, and thus can determine the amount of radio resources allocated to the UE for Msg3 transmission through the RAR.

[0043] II. Cell Coverage

[0044] The radio cells of 2G / 3G / 4G use carrier frequencies below 6 GHz and are mainly used to provide terrestrial radio signal coverage. In the 5G era, the requirements for radio signal coverage will be diverse. In addition to providing terrestrial coverage, terrestrial base stations are also required to provide radio signal coverage in the middle and low altitudes. For example, terrestrial base stations are used to serve traffic from the ground, high-rise urban floors, and aircraft in the middle and low altitudes. Therefore, in addition to horizontal beam scanning for providing terrestrial coverage, aerial beam scanning is also required to provide coverage for high-rise floors and the middle and low altitudes.

[0045] In addition, with the development of large-scale antennas and distributed antennas, the coverage of a cell is no longer limited to the coverage range of a single-site antenna. The coverage area of a cell depends on the combined effects of several factors such as the number of antennas deployed in the cell, the deployment azimuth, the transmission power, and the frequency. By using distributed antennas, the coverage range of a cell can be expanded, the shape of the coverage area of the cell can be changed, and the coverage shadow area can be covered, etc.

[0046] In practical applications, the types of services in different regions of the same cell may vary, and the load distribution may also be different. In addition, the requirements for the random access mechanism also vary in different regions or spaces within the cell. If 2-step RACH is used within the entire coverage range, there may be a waste of 2-step RACH radio access resources in some regions due to the lack of UEs supporting this function or the lack of services requiring this function. Therefore, if random access is configured at the cell granularity and the random access resources are evenly distributed among the signal beams discovered by the cell, in the case of uneven service distribution loads and different types of services in different regions or spaces within the cell, the utilization efficiency of random access resources in some regions or spaces is low, and the random access resources in some regions or spaces may be scarce, or the access performance of UEs in some regions or spaces does not meet the user experience requirements, etc.

[0047] In view of these problems, the embodiments of the present application provide a random access scheme for a cell to solve these problems.

[0048] The following will, with reference to the accompanying drawings, illustrate in detail the random access scheme for a cell provided by the embodiments of the present application through some embodiments and their application scenarios.

[0049] Figure 4 Fig. shows a schematic flow diagram of a random access method for a cell in an embodiment of the present application. This method 400 can be executed by a terminal device. In other words, the method can be executed by software or hardware installed on the terminal device. As Figure 4 shown, the method may include the following steps.

[0050] S410: The terminal receives random access configuration information from the network-side device.

[0051] Among them, 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.

[0052] It can be understood that the random access method of the cell in this application is implemented based on a multi-dimensional cell form. A multi-dimensional cell means that according to the service types and service load distributions of the target cell, etc., the coverage area or space of the target cell can be divided into several sub-regions or sub-spaces or sub-cells, etc. according to service provision requirements. Each sub-region or sub-space or sub-cell is called a dimension. That is to say, each cell can be divided into multiple dimensions.

[0053] In the embodiment of this application, the target cell includes at least one dimension, and one of the at least one dimension corresponds to at least one of the following (1)-(5):

[0054] (1) At least one sub-region of the target cell. In this implementation, the coverage area of the target cell can be divided into multiple sub-regions, and at least one sub-region is a dimension of the target cell. For example, the ground area covered by the target cell is divided into multiple sub-regions.

[0055] (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, and at least one subspace is a dimension of the target cell. For example, the coverage space of the target cell is divided into three subspaces: ground, low altitude, and middle altitude, and each subspace is a dimension of the target cell.

[0056] (3) At least one sub-cell of the target cell. In this implementation, the coverage range of the target cell can be divided into multiple sub-cells, and at least one sub-cell is a dimension of the target cell.

[0057] (4) The coverage range of at least some of the multiple beams of the target cell.

[0058] Each radio cell of NR can be provided with a cell discovery signal by a group of SSB beams. This group of SSB beams is transmitted according to a set period (for example, 20 ms) and power. Each SSB beam provides coverage in one direction, and there is partial cross-coverage between adjacent SSB beams to provide seamless coverage. Therefore, in this implementation, the coverage range of at least some of the multiple beams of the target cell is used as a dimension of the target cell.

[0059] (5) A beam set, where the beam set includes the coverage ranges of at least some 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 one dimension of the target cell. For example, in Figure 5 , the partial beams radiating towards the ground form one beam set, corresponding to the ground coverage dimension; the partial beams radiating towards the middle space form one beam set, corresponding to the middle space coverage dimension; and the partial beams radiating upwards form one beam set, corresponding to the higher space coverage dimension.

[0060] Exemplarily, as Figure 5 shown, the multi-dimensional cell includes a ground coverage dimension, a middle space coverage dimension, and a higher space coverage dimension. Among them, the ground coverage dimension can be used to serve ground services, the middle space coverage dimension can be used for communication services of floor residents, and the higher space coverage dimension can be used for aircraft communication services. As Figure 6 shown, the multi-dimensional cell includes a dimension for square coverage on the left and a dimension for lake coverage on the right. The dimension for square coverage on the left is used for communication services of dense crowds on the left, and the dimension for lake coverage on the right is used for necessary sparse tourist communication services on the lake. As Figure 7 shown, the multi-dimensional cell includes a macro coverage dimension providing wide-area coverage and three micro coverage dimensions providing hot-spot coverage or shadow area coverage.

[0061] In the embodiments of the present application, the cell coverage of each dimension is provided by a set of cell discovery signal beams. Each cell discovery signal beam is a beam used to send system messages composed of the downlink synchronization signal, cell identifier, and some necessary system parameters of the cell. The terminal discovers the cell and achieves downlink synchronization with the cell, and obtains necessary system parameters by monitoring the cell discovery signal beams. The terminal can receive subsequent system messages based on these necessary system parameters.

[0062] In the embodiments of the present application, each dimension has a corresponding random access configuration. When the terminal obtains the random access configuration information, it can select the random access configuration of the dimension where the terminal is located, that is, the target dimension, from the random access configuration information. The dimension where the terminal is located refers to the dimension where the terminal is located, or it can also refer to the dimension selected by the terminal.

[0063] In an embodiment of the present application, the terminal can determine the dimension where the terminal is located according to the detected cell discovery signal. For example, the terminal can obtain the dimension identifier of the target dimension where the terminal is located according to the detected cell discovery signal. That is to say, 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 according to the dimension identifier of the target dimension. Therefore, in one implementation, obtaining the dimension identifier of the target dimension where the terminal is located includes: the terminal receives the target cell discovery signal; the terminal obtains the dimension identifier of the target dimension where the terminal is located based on the received target cell discovery signal.

[0064] In one implementation, the terminal obtaining the dimension identifier of the target dimension corresponding to the received target cell discovery signal may include one of the following (1)-(3):

[0065] (1) The terminal obtains the dimension identifier of the target dimension based on the information carried in the target cell discovery signal.

[0066] Among them, in another implementation, the terminal obtaining the dimension identifier of the target dimension based on the information carried in the target cell discovery signal may include one of the following (1.1) and (1.2):

[0067] (1.1) The terminal obtains the dimension identifier of the target dimension carried in the target cell discovery signal;

[0068] (1.2) The terminal obtains the target parameter carried in the target cell discovery signal, and obtains the dimension identifier of the target dimension according to the target parameter.

[0069] Among them, in one embodiment, the target parameter includes one of the following:

[0070] The first indication information and the target beam number, where the first indication information is used to indicate the maximum number of discovery signal beams corresponding to one dimension of the target cell, and the target beam number is used to indicate the beam number of the discovery signal corresponding to the target cell discovery signal in the target cell. For example, the dimension identifier of the target dimension = floor(target beam number / the maximum number of discovery signal beams of the target dimension).

[0071] The target beam number, where the target beam number is used to indicate the beam number of the discovery signal corresponding to the target cell discovery signal within the target cell; for example, the number of discovery signal beams that can be included in one dimension (i.e., the maximum number of discovery signal beams corresponding to one dimension) is predefined by the protocol, the target beam number is carried in the target cell discovery signal, and the dimension identifier of the target dimension = floor(target beam number / the maximum number of discovery signal beams of the target dimension).

[0072] For example, a cell can have 3 dimensions, and the maximum number of discovery signal beams for each dimension is 8. Among them, 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.

[0073] Optionally, the protocol can define a list of the maximum number of discovery signal beams for one dimension. The network - side device can indicate the corresponding serial number of the target dimension in the target discovery signal, and the UE queries the list of the maximum number of discovery signal beams according to the serial number to determine the maximum number of discovery signal beams for each dimension, that is, the maximum number of discovery signal beams corresponding to one dimension.

[0074] The second indication information and the target beam number, where the second indication information is used to indicate the number of dimensions of the target cell, and the target beam number is used to indicate the beam number of the discovery signal corresponding to the target cell discovery signal within the target cell. For example, the dimension identifier of the target dimension = the lower - dimension identifier = beam number % total number of dimensions, where "%" represents the remainder operation.

[0075] (2) The terminal obtains the dimension identifier of the target dimension based on the target synchronization signal sequence included in the target cell discovery signal, where the target synchronization signal sequence includes one of the following: the primary synchronization signal sequence, the secondary synchronization signal sequence.

[0076] Among them, 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):

[0077] (2.1) The terminal obtains the dimension identifier of the target dimension according to the target root sequence, where 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 of different dimensions of the target cell are different.

[0078] (2.2) The terminal obtains the dimension identifier of the target dimension according to the target branch sequence, where the target branch sequence is the branch of the root sequence corresponding to the 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.

[0079] Optionally, a dimension identifier corresponding to a root sequence or a branch of a root sequence can be predefined by the protocol.

[0080] (3) The terminal obtains the dimension identifier of the target dimension based on the target frequency grid used by the target cell discovery signal.

[0081] Wherein, in one implementation, 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.

[0082] For example, the protocol defines a correspondence between the frequency grid where the discovery signal is located and the dimension serial number. After the UE detects the discovery signal, it determines the dimension where the discovery signal beam is located according to the frequency grid where the discovery signal is located. Or, the protocol defines a basic frequency grid and several secondary frequency grids for sending discovery signals. Any cell must use its basic frequency grid to send the discovery signal of one dimension. If the cell has other dimensions, it uses the secondary frequency grid to send.

[0083] Optionally, a dimension identifier corresponding to a grid configuration can be predefined by the protocol.

[0084] S420: The terminal performs a random access procedure in the target cell dimension based on the random access configuration of the target dimension.

[0085] In S420, after the terminal obtains the random access configuration of the target dimension, it determines and initiates a random access procedure according to the random access configuration of the target dimension.

[0086] 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, where 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; the target cell includes at least one dimension, and 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, and the beam set includes the coverage range of at least some of the multiple beams of the target cell, so that terminals in different dimensions within the same cell can execute random access procedures according to the random access configurations of the dimensions where they are located, avoiding the problem that the differentiated requirements for random access in different regions or spaces of the same cell cannot be met when terminals in the same cell all use the same random access configuration, and further improving the access performance of the terminal and the utilization rate of random access resources.

[0087] In one implementation, the random access configuration includes at least one of the following (1)-(4):

[0088] (1) Random access time-frequency resource configuration.

[0089] In another implementation, the random access time-frequency resource configuration may include at least one of the following (1.1) and (1.2):

[0090] (1.1) Density of random access resources.

[0091] The density of the random access resources is used to indicate one of the following:

[0092] (a) The number of time-frequency positions of random access resources corresponding to a cell discovery signal beam.

[0093] (b) The number of cell discovery signal beams corresponding to a random access resource time-frequency position.

[0094] (c) The number of random access signals corresponding to a cell discovery signal beam.

[0095] The discovery signal beam may be an SSB beam. The random access resources include the time-frequency position of PRACH transmission (PRACH occasion, PO) and the random access signal PRACH preamble. Then, multiple SSB beams may correspond to the same resource time-frequency position, one SSB corresponds to one or more resource time-frequency positions, and one SSB may also be configured with multiple corresponding PRACH preambles.

[0096] It should be noted that the number of time-frequency positions of the above-mentioned random access resources, the number of cell discovery signal beams, and the number of random access signals can be fractions, decimals, or positive integers.

[0097] (1.2) Types of random access resources.

[0098] Among them, the types of the random access resources may include random access resources for the 2-step RACH procedure, random access resources for the 4-step RACH procedure, and random access resources dedicated to integrated access backhaul (IAB) nodes. Exemplarily, the time-frequency resource configuration of the random access in the target dimension may be random access resources for the 2-step RACH procedure, and the time-frequency resource configuration of the first dimension adjacent to the target dimension may be random access resources for the 4-step RACH procedure.

[0099] (2) Power configuration of random access signals.

[0100] Among them, in another implementation, the power configuration of the random access signals may include at least one of the following (2.1) and (2.2):

[0101] (2.1) Transmission power configuration of random access signals.

[0102] Among them, in yet another implementation, the transmission power configuration of the random access signals includes at least one of the following:

[0103] (a) The target receiving power of the random access signals.

[0104] It can be understood that the terminal can determine the transmission power of the random access signals according to the target receiving power of the random access signals, and use this transmission power to send random access signals during the random access procedure, which can avoid interference to neighboring cells caused by random access.

[0105] (b) The power ramp step of the random access signals.

[0106] Regarding the power ramp step of the random access signals, it can be understood that when the terminal sends random access signals during the random access procedure, the power will be ramped up at a certain step to ensure the reliability of the transmitted signals. Exemplarily, if the service in a certain dimension is sensitive to access delay, and the terminal does not receive a response from the network device when sending random access signals for the previous time, then when sending random access signals again, more transmission power can be increased to improve the probability that the network device detects the random access signals and reduce the access delay.

[0107] (c) The maximum allowable transmit power of the random access signal.

[0108] The maximum allowable transmit power of the random access signal is used to indicate the maximum power that the terminal can use when transmitting the random access signal. Exemplarily, for a service in a certain dimension that is sensitive to access latency, in order to enable the terminal to access as soon as possible, a relatively large maximum allowable transmit power can be configured to reduce the access latency.

[0109] (2.2) Configuration of the received power threshold of the cell discovery signal used in the random access process.

[0110] The received power threshold configuration includes at least one of the following:

[0111] (a) The first received power threshold, which 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 currently providing service based on the first received power threshold.

[0112] 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.

[0113] (b) The second received power threshold, which is used to indicate that the terminal determines whether to select the random access resource on the secondary uplink carrier to transmit the random access signal based on the second received power threshold.

[0114] For example, when deploying in the dimension of a dense uplink receiving site, a relatively low second received power threshold can be configured. For example, if the received power of the cell discovery signal beam currently providing service is higher than the second received power threshold, the random access resource on the high-frequency uplink carrier can be selected to transmit the random access signal, otherwise the random access resource on the secondary uplink carrier (lower frequency) is used to transmit the random access signal.

[0115] (c) The third received power threshold, which is used to indicate that the terminal determines whether to initiate the random access process based on the two-step random access procedure based on the third received power threshold.

[0116] (d) The fourth received power threshold, which is used to indicate that the terminal determines whether to allow the random access process to be initiated based on the four-step random access procedure based on the fourth received power threshold.

[0117] For example, when the terminal is in the target dimension and the third received 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 procedure; otherwise, the terminal selects other random access procedures, such as initiating random access based on the 4-Step-RACH procedure.

[0118] (3) Random access control parameter configuration.

[0119] In one implementation, the random access control parameter configuration includes at least one of the following:

[0120] (3.1) The time length for monitoring the random access response message.

[0121] It can be understood that the network-side device can set this time length according to the random access load, service priority, sensitivity to random access delay, etc. in different dimensions. In this way, the network-side device can preferentially process random access triggered by services with higher service priorities or delay-sensitive services. Then, the terminal can determine the time length to wait, that is, the time length for monitoring the random access response message, after sending the random access signal or the random access signal and the accompanying PUSCH.

[0122] (3.2) The maximum number of transmissions of the random access signal.

[0123] Among them, the maximum number of transmissions of the random access signal includes the maximum number of PRACH transmissions used to establish, re-establish, or resume the RRC connection.

[0124] (3.3) Backoff time information.

[0125] The backoff time information refers to the fact that during the random access process, when a conflict or collision occurs, a random time needs to be waited before re-attempting. Therefore, the terminal can reduce the possibility of re-occurring conflicts or collisions according to this backoff time information, thereby improving the efficiency and stability of random access.

[0126] Optionally, the backoff time information may include at least one of the following: the mapping relationship between the backoff time identifier and the backoff time value, and the backoff time indication. Among them, the mapping relationship may be shared by multiple dimensions, or the mapping relationship may also be specific to the target dimension. For example, multiple dimensions use the same backoff time table, which includes multiple backoff time identifiers and the corresponding backoff time values. In the case of overloaded access, for the dimension that provides services for time-sensitive services, the backoff time indication sent by the network-side device may indicate a backoff time identifier corresponding to a relatively small backoff time value or not indicate the backoff time, while for the dimension that provides services for non-time-sensitive services, the backoff time indication sent by the network-side device may indicate a backoff time identifier corresponding to a relatively large backoff time value.

[0127] Optionally, in the case where the above mapping relationship is not included in the backoff time information, the backoff time indication may directly indicate the backoff time value. Or, in the case where the above backoff time indication is not included in the backoff time information, it may be agreed that the backoff time value of the target dimension is the backoff time value corresponding to the specified position in the mapping relationship. For example, the first backoff time value in the mapping relationship.

[0128] (4) Configuration of the size indication of Message 3 in the random access procedure.

[0129] It can be understood that considering the different service types and loads of different dimensions, the network-side device can configure the size threshold of Message 3 (Msg3) separately for different dimensions. 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.

[0130] 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):

[0131] (1) The terminal receives the random access configuration specific to the target dimension from the network-side device.

[0132] 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 according to the dimension to which the currently selected cell discovery signal beam belongs, that is, the target dimension. When the terminal needs the network to provide access services, it can determine the random access resources according to the random access time-frequency resource configuration of the target dimension to initiate the random access procedure.

[0133] (2) The terminal receives, from the network-side device, a first random access configuration that is common to the target cell and a second random access configuration that is specific to the target dimension, where the second random access configuration includes at least one of the following: a partial configuration not provided in the first random access configuration, a configuration for replacing a partial configuration in the first random access configuration.

[0134] It can be understood that the network-side device provides a common random access configuration, i.e., the first random access configuration, for the target cell, which is applicable to all dimensions within 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 some dimensions or a certain dimension. The configuration is dedicated to the dedicated random access parameters of this dimension and can include a partial configuration not provided in the first random access configuration, or a configuration for replacing a partial configuration in the first random access configuration. The common random access configuration and the dimension-specific random access configuration respectively include random access time-frequency resource configuration parameters or random access control parameters. When the terminal receives the first random access configuration and the dedicated second random access configuration for the target dimension, when performing random access in the target dimension, it can preferentially execute the random access process based on the parameters provided by the dedicated second random access configuration. For the parameters for which the dedicated second random access configuration does not provide a configuration, the terminal can use the configuration values provided by the first random access configuration.

[0135] (3) The terminal receives, from the network-side device, a third random access configuration that is common to the target cell and a fourth random access configuration that is specific to 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 process.

[0136] It can be understood that the network-side device provides a common random access configuration, i.e., the third random access configuration, for the target cell, which can be used by terminals in all dimensions within the target cell for random access and can also be used by terminals in all dimensions in other cells for random access. At the same time, the network-side device can provide a dedicated random access configuration, i.e., the fourth random access configuration, for each dimension or some dimensions or a certain dimension. The fourth random access configuration is only provided for terminals in the target dimension to execute random access. When the terminal initiates a random access process in the target dimension, it can choose to execute the random access process based on the third random access configuration or the fourth random access configuration.

[0137] 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 execute the random access.

[0138] Optionally, when a UE fails to access based on the fourth random access configuration, it can choose to use the third random access configuration to access.

[0139] (4) 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.

[0140] 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 it is in and performs random access.

[0141] Figure 8 FIG. shows a schematic flowchart of a configuration method for random access in an embodiment of the present application. This method 800 can be executed by a network side device. In other words, the method can be executed by software or hardware installed on the network side device. As Figure 8 shown, the method may include the following steps.

[0142] S810: The network side device determines the random access configurations of each dimension of the target cell.

[0143] In an embodiment of the present application, the target cell includes at least one dimension, and the random access configurations of different dimensions are configured separately.

[0144] In an embodiment of the present application, one of the at least one dimension corresponds to at least one of the following:

[0145] At least one sub-region of the target cell;

[0146] At least one subspace of the target cell;

[0147] At least one sub-cell of the target cell;

[0148] At least some of the multiple beams of the target cell;

[0149] A beam set, where the beam set includes at least some of the multiple beams of the target cell.

[0150] It can be understood that by dividing the target cell into multiple dimensions, random access configurations are separately configured for each. Among them, the division and definition of dimensions can refer to Figure 4 the relevant descriptions in the shown embodiments, which will not be elaborated here.

[0151] Optionally, before S820, it may further include: The network side device configures the dimension identifiers of each of the dimensions.

[0152] In one implementation, configuring the dimension identifiers of each of the said dimensions includes: the network-side device determining at least one dimension included in the target cell; the network-side device configuring the dimension identifiers of each of the said dimensions according to a predetermined rule.

[0153] In one implementation, after configuring the dimension identifiers of each of the said dimensions, it further includes: the network-side device respectively sending cell discovery signals of each of the said dimensions according to the transmission parameter sets corresponding to each of the said dimensions; wherein, the transmission parameter sets used for the cell discovery signals of different dimensions are respectively configured.

[0154] Furthermore, the dimension identifier of the dimension corresponding to the cell discovery signal can be indicated by one of the following:

[0155] (1) Information carried in the cell discovery signal.

[0156] (2) The cell discovery signal includes a target synchronization signal sequence, where the target synchronization signal sequence includes one of the following: a primary synchronization signal sequence, a secondary synchronization signal sequence.

[0157] (3) The frequency grid used by the cell discovery signal.

[0158] Through the above implementation, the network-side device can determine the dimension identifiers of each dimension of the target cell, and further can, according to the dimension identifiers of each dimension, identify the random access configurations of each dimension.

[0159] S820: The network-side device sends random access configuration information.

[0160] 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.

[0161] In S820, after the network-side device configures the random access configuration of the target dimension, it sends the random access configuration information to the terminal to instruct the terminal to initiate a random access procedure according to the random access configuration information.

[0162] In an embodiment of the present application, the network - side device determines corresponding random access configurations for each dimension of the target cell. After determining the random access configurations for each dimension, it 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 at least one dimension. 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. Thus, random access configurations can be performed separately for different dimensions to meet the random access requirements of services in different dimensions, thereby improving the network - side device's tolerance to 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.

[0163] In one implementation, 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.

[0164] Among them, for the specific content of the random access configuration, reference can be made to Figure 4 the description in the embodiments shown, which will not be elaborated here.

[0165] In one implementation, 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.

[0166] Among them, for the specific content of the random access time - frequency resource configuration, reference can be made to Figure 4 the description in the embodiments shown, which will not be elaborated here.

[0167] In one implementation, the power configuration of random access signals includes at least one of the following: the transmission power configuration of random access signals; the received power threshold configuration of cell discovery signals used in the random access process.

[0168] Among them, for the specific content of the power configuration of random access signals, reference can be made to Figure 4 the description in the embodiments shown, which will not be elaborated here.

[0169] In one implementation, the transmission power configuration of random access signals includes at least one of the following:

[0170] The target reception power of the random access signal;

[0171] The power ramp step of the random access signal;

[0172] The maximum allowable transmission power of the random access signal.

[0173] Among them, for the specific content of the transmission power configuration of the random access signal, reference can be made to Figure 4 the description in the illustrated embodiment, which will not be elaborated herein.

[0174] In one implementation, the reception power threshold configuration includes at least one of the following: a first reception 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 reception power of the cell discovery signal beam currently providing services based on the first reception power threshold; a second reception power threshold, 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 reception power threshold; a third reception 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 based on the third reception power threshold; a fourth reception 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 based on the fourth reception power threshold.

[0175] Among them, for the specific content of the reception power threshold configuration, reference can be made to Figure 4 the description in the illustrated embodiment, which will not be elaborated herein.

[0176] In one implementation, 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.

[0177] Among them, for the specific content of the random access control parameter configuration, reference can be made to Figure 4 the description in the illustrated embodiment, which will not be elaborated herein.

[0178] In one implementation manner, the backoff time information includes at least one of the following: the mapping relationship between the backoff time identifier and the backoff time value, and the backoff time indication. It can be understood that the network-side device can provide the mapping relationship between the backoff time identifier and the backoff time value (backoff time table) by dimension and / or the backoff time indication by dimension, so as to enable the network-side device to preferentially provide access services for delay-sensitive services. For example, in the case of using the same backoff time table in different dimensions, when the access load is too heavy, the network-side device can indicate the backoff time for serving non-delay-sensitive services, and in the dimension for serving delay-sensitive services, it does not indicate the backoff time or indicates a smaller backoff time; the network-side device can configure a backoff time table with a larger backoff time value for the dimension for serving 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 for serving non-delay-sensitive services is greater than the backoff time value applicable to the terminal in the dimension for serving delay-sensitive services.

[0179] In an optional implementation manner, in S810, the network-side device determining the random access configuration of each dimension of the target cell may include: the network-side device determining the random access resources configured for each dimension based on the service density of each dimension, where the greater the service density of a dimension, the more random access resources are configured for that dimension.

[0180] In this implementation manner, the network-side device can configure more random access resources for the dimension with high service density. For example, when configuring more random access resource time-frequency positions or random access signals for each cell discovery signal beam in this dimension; and configure fewer random access resource time-frequency positions or fewer random access signals for each cell discovery signal beam in the dimension with scarce services. In this way, from the perspective of the overall cell, the utilization efficiency of random access resources can be improved and the user experience can be provided, thereby controlling the operating cost of the network.

[0181] In an optional implementation manner, the network-side device determining the random access configuration of each dimension of the target cell may include: the network-side device determining 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. In this implementation manner, 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, so that the power information of the random access signal configured for each dimension can meet the actual requirements of each dimension.

[0182] In one embodiment, the network-side device determines the power configuration of the random access signals for 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 reception power of the random access signals for each dimension according to the noise and interference levels sensed by the network-side device during the random access process in each dimension. In this embodiment, the network-side device configures the target reception power of the random access signals (e.g., random access preamble) by dimension. When the terminal sends a random access signal in a dimension, it can estimate the transmission power of the random access signal according to the target reception 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 an appropriate random access signal reception power according to the noise and interference levels sensed by the network-side device during the random access process in each dimension, optimize the detection probability of the random access signal, and reduce the co-channel interference caused by random access.

[0183] In one embodiment, the network-side device determines the power configuration of the random access signals for 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 ramp step of the random access signals for each dimension according to the sensitivity of the service to the access delay in each dimension. In this embodiment, the network-side device can configure the power ramp step (dB) of the random access signals (e.g., random access preamble) by each dimension. For example, in the case where the service in a dimension is sensitive to the access delay, the network-side device can configure a larger power ramp step of the random access signals, so that when the terminal does not receive the random access response from the network-side device after sending a random access signal for the first time, when sending a random access signal again, it can increase the transmission power by a large amount, improve the probability that the network-side device detects the random access signal, and reduce the access delay.

[0184] In one embodiment, the network-side device determines the power configuration of the random access signals for 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 reception power threshold configuration of the cell discovery signals used in the random access process for each dimension according to the network environment of each dimension. The coverage distances of different dimensions are different, or there are also differences in the uplink and downlink interference levels. In this embodiment, according to the network environment of each dimension, the reception power threshold of the cell discovery signals used in the random access process for each dimension is configured, so as to optimize the access performance of the terminal.

[0185] For example, the network-side device may configure the first received power threshold of the cell discovery signal for each respective dimension. Based on the first received power threshold, the terminal can determine whether it can evaluate the propagation loss between the network-side device and the UE based on the received power of the cell discovery signal beam currently providing service. 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.

[0186] For another example, the network-side device may configure the second received power threshold of the cell discovery signal for each respective dimension. Based on the second received power threshold, the UE can determine whether to select the random access resources on the secondary uplink carrier to send the random access signal. For example, in the dimension where there are dense pure uplink receiving sites deployed, a lower second received power threshold can be configured. When the received power of the cell discovery signal beam currently providing service is higher than the second threshold, the random access resources on the high-frequency uplink carrier are selected to send the random access signal. Otherwise, the random access resources on the secondary uplink carrier (lower frequency) are used to send the random access signal.

[0187] For another example, the network-side device may configure the third received power threshold of the cell discovery signal for each respective cell. Based on the third received power threshold, the UE can determine whether to initiate the random access procedure based on the 2Step-RACH procedure. For example, when the UE is in the first dimension and the third received 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, the random access can be initiated based on the 2Step-RACH procedure. Otherwise, the UE can only select other random access procedures, such as the 4Step-RACH procedure, to initiate the random access.

[0188] For another example, the network-side device may configure the fourth received power threshold of the cell discovery signal for each respective cell. Based on the fourth received power threshold, the UE can determine whether to initiate the random access procedure based on the 4Step-RACH procedure. For example, when the UE is in the first dimension and the fourth received power threshold configured by the base station for the first dimension is Y dB, when the RSRP of the cell discovery signal measured by the UE is higher than Y dB, the random access can be initiated based on the 4Step-RACH procedure. Otherwise, the UE can only select other random access procedures, such as the 2Step-RACH procedure, to initiate the random access.

[0189] 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 according to 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 according to the service type or access load of the target cell's and only eye dimensions.

[0190] In one embodiment, the network-side device determining the random access control parameter configuration for each dimension according to the service or access load of each dimension may include: the network-side device determining 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 service sensitivity to access delay of each dimension. In this embodiment, the network-side device may configure the time window length for monitoring the corresponding random access response message after the terminal sends a random access signal (i.e., rand access preamble) or a random access signal and the accompanying Physical Uplink Shared Channel (PUSCH). The network-side device may set this time window length according to the random access load, service priority, and service sensitivity to random access delay of different dimensions. Through this embodiment, the network-side device may set the time length for the dimension of the service with a higher service priority or a delay-sensitive service to be shorter, and the time length for the dimension of the service with a lower service priority or a delay-insensitive service to be longer, so as to preferentially process the random access triggered by the service with a higher service priority or a delay-sensitive service.

[0191] In one embodiment, the network-side device determining the random access control parameter configuration for each dimension according to the service or access load of each dimension may include: the network-side device determining the maximum number of transmissions of the random access signal for each dimension according to the access load or service type of each dimension. In this embodiment, the maximum number of transmissions includes the maximum PRACH transmission number for at least one of establishing a Radio Resource Control (RRC) connection, re-establishing an RRC connection, and resuming an RRC connection. For example, the network-side device may set the maximum number of transmissions for the dimension with a larger access load to a smaller value to avoid the terminal repeatedly sending the random access signal and causing the load of this dimension to further increase, and set the maximum number of transmissions for the dimension with a smaller access load to a larger value to ensure that the terminal can access the network.

[0192] In one embodiment, the network-side device determining the random access control parameter configuration for each dimension may include: the network-side device determining the backoff time information for each dimension according to the access load or the sensitivity of the service to the access delay in each dimension.

[0193] Optionally, the backoff time information includes at least one of the following: the mapping relationship between the backoff time identifier and the backoff time value, and the backoff time indication. Among them, the mapping relationships for each dimension may be the same or different. For example, the backoff time applicable to the UE in the dimension where the network-side device provides services for non-delay-sensitive services is greater than the backoff time applicable to the UE in the dimension where the network-side device provides services for delay-sensitive services, so as to reduce the delay of delay-sensitive services.

[0194] In an alternative 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 procedure for each dimension according to the service type or access load in each dimension. In this implementation, considering that the service types and loads in different dimensions are different, the network-side device may configure different Msg3 size thresholds for different dimensions, and the UE determines the corresponding random access preamble group according to the Msg3 size threshold and the actual size of Msg3, and selects a random access preamble from it to perform random access.

[0195] In one implementation, 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, so as to ensure the even distribution of the random access resources among the cell discovery signal beams in the same dimension.

[0196] In one implementation, the network-side device sending the random access configuration information may include one of the following (1)-(4):

[0197] (1) The network-side device sends the random access configuration dedicated to the target dimension to the terminal of the target dimension.

[0198] In this implementation, the network-side device can send random access configurations applicable to each dimension, or can send time-frequency resource configurations for random access in other dimensions in one dimension. Each dimension has a corresponding random access configuration, and the random access configuration includes time-frequency resource configurations for random access, random access control parameters, etc. The terminal can receive the time-frequency resource configuration for random access in the dimension to which the cell discovery signal beam currently selected by the terminal belongs. When the UE needs the network-side device to provide access services, it determines the random access resources according to the time-frequency resource configuration for random access in this dimension, initiates the random access procedure, and uses the corresponding control parameters in the random access procedure.

[0199] (2) The network-side device sends the first random access configuration common to the target cell to the terminals in the target cell, and sends the second random access configuration specific to the target dimension to the terminals in 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.

[0200] In this implementation, the network-side device provides a common random access configuration, i.e., the first random access configuration, for the target cell, which is applicable to all dimensions within the target cell and can also be applicable to all dimensions in other cells; at the same time, the network-side device can provide dedicated random access configurations for each dimension or some dimensions or a certain dimension. The configurations are dedicated random access parameters for this dimension and can include partial configurations not provided in the first random access configuration, or configurations used to replace partial configurations in the first random access configuration. The common random access configuration and the dimension-specific random access configuration respectively include time-frequency resource configuration parameters for random access or random access control parameters. When the terminal receives the first random access configuration and the dedicated second random access configuration for the target dimension, when performing random access in the target dimension, it can preferentially execute the random access procedure based on the parameters provided by the dedicated second random access configuration; for the parameters for which the dedicated second random access configuration does not provide configurations, the terminal can use the configuration values provided by the first random access configuration.

[0201] (3) The network-side device sends the third random access configuration common to the target cell to the terminals in the target cell, and sends the fourth random access configuration specific to the target dimension to the terminals in 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.

[0202] In this implementation, the network-side device provides a common random access configuration, i.e., the third random access configuration, for the target cell, which can be used by terminals in all dimensions within the target cell for random access, and can also be used by terminals in all dimensions within other cells for random access; at the same time, the network-side device can provide a dedicated random access configuration, i.e., the fourth random access configuration, for each dimension or some dimensions or a certain dimension. The fourth random access configuration is only provided for terminals in the target dimension to perform random access; when a terminal initiates a random access procedure in the target dimension, it can choose to perform the random access procedure based on the third random access configuration or the fourth random access configuration.

[0203] When a dimension is configured with both a common random access configuration and a dedicated random access configuration, the UE in this dimension preferentially selects the dedicated random access configuration to perform random access.

[0204] When a UE fails to access based on the dedicated random access configuration, it can choose to access using the common random access configuration.

[0205] (4) The network-side device sends the random access configuration information to the terminals in the target cell, where the random access configuration information includes the random access configurations of each dimension of the target cell.

[0206] In this implementation, the random access configuration information may include the dedicated random access configurations of each dimension of the target cell. For example, the common random access configuration and the dedicated random access configuration in the above implementation manners (2) and (3) of 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 it is in and performs random access.

[0207] Through the above method provided by the embodiments of the present application, differential random access configuration is implemented according to the cell dimension, the utilization efficiency of random access resources is improved, and the access experience of users is improved.

[0208] The random access method for a cell provided by the embodiments of the present application may be executed by a random access device of the cell. In the embodiments of the present application, taking the random access device of the cell executing the random access method of the cell as an example, the random access device of the cell provided by the embodiments of the present application is described.

[0209] Figure 9 The structural schematic diagram of the random access device of the cell provided by the embodiments of the present application is shown as Figure 9 As shown, the random access device 900 of the cell includes: a receiving module 910 and an execution module 920.

[0210] In this embodiment, a receiving module 910 is configured to receive random access configuration information from a network-side device, where the random access configuration information includes random access configuration of a target dimension of a target cell, and the target dimension is the dimension where the terminal is located; 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; where 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:

[0211] At least one sub-region of the target cell;

[0212] At least one subspace of the target cell;

[0213] At least one sub-cell of the target cell;

[0214] Coverage ranges of at least some of multiple beams of the target cell;

[0215] A beam set, where the beam set includes coverage ranges of at least some of multiple beams of the target cell.

[0216] In one implementation, the random access configuration includes at least one of the following:

[0217] Random access time-frequency resource configuration;

[0218] Power configuration of a random access signal;

[0219] Random access control parameter configuration;

[0220] Size indication configuration of message 3 in the random access procedure.

[0221] In one implementation, the random access time-frequency resource configuration includes at least one of the following:

[0222] Density of random access resources, where the density of the 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;

[0223] Type of random access resources.

[0224] In one implementation, the power configuration of the random access signal includes at least one of the following:

[0225] Transmission power configuration of the random access signal;

[0226] Receiving power threshold configuration of a cell discovery signal used in the random access process.

[0227] In one implementation, the transmission power configuration of the random access signal includes at least one of the following:

[0228] The target reception power of the random access signal;

[0229] The power ramp step of the random access signal;

[0230] The maximum allowable transmission power of the random access signal.

[0231] In one implementation, the reception power threshold configuration includes at least one of the following:

[0232] The first reception power threshold, which 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 reception power of the cell discovery signal beam currently providing services based on the first reception power threshold;

[0233] The second reception power threshold, which 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 reception power threshold;

[0234] The third reception power threshold, which 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 reception power threshold;

[0235] The fourth reception power threshold, which is used to indicate that the terminal determines whether to allow to initiate a random access procedure based on a four-step random access procedure based on the fourth reception power threshold.

[0236] In one implementation, the random access control parameter configuration includes at least one of the following:

[0237] The time length for monitoring the random access response message;

[0238] The maximum number of transmissions of the random access signal;

[0239] The backoff time information.

[0240] In one implementation, the receiving module 910 receives random access configuration information from the network-side device, including one of the following:

[0241] Receiving the random access configuration dedicated to the target dimension from the network-side device;

[0242] Receive 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, where the second random access configuration includes at least one of the following: a partial configuration not provided in the first random access configuration, a configuration for replacing a partial configuration in the first random access configuration;

[0243] Receive 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, where the terminal uses one of the third random access configuration and the fourth random access configuration to perform a random access procedure;

[0244] Receive the random access configuration information from the network side device, where the random access configuration information includes random access configurations for each dimension of the target cell.

[0245] The random access device of the cell in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than the terminal. Exemplarily, the terminal may include, but is not limited to, the types of the terminal 11 listed above, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0246] The random access device of the cell provided in the embodiments of the present application can implement each process implemented by the random access method embodiment of the above cell and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0247] For the random access configuration method provided in the embodiments of the present application, the execution subject may be a random access configuration device. In the embodiments of the present application, taking the random access configuration device as an example to execute the random access configuration method, the random access configuration device provided in the embodiments of the present application is described.

[0248] Figure 10 The structural schematic diagram of the random access configuration device provided in the embodiments of the present application is shown as Figure 10 shown, the random access configuration device 1000 includes: a determination module 1010 and a sending module 1020.

[0249] In this embodiment, a determination module 1010 is 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 1020 is configured to send random access configuration information, where the random access configuration information includes the random access configuration for a target dimension, and the target dimension is any one of the at least one dimension; where one dimension of the at least one dimension corresponds to at least one of the following:

[0250] At least one sub-region of the target cell;

[0251] At least one subspace of the target cell;

[0252] At least one sub-cell of the target cell;

[0253] The coverage range of at least some of the multiple beams of the target cell;

[0254] A beam set, where the beam set includes the coverage range of at least some of the multiple beams of the target cell.

[0255] In one implementation, the random access configuration includes at least one of the following:

[0256] Random access time-frequency resource configuration;

[0257] Power configuration of the random access signal;

[0258] Random access control parameter configuration;

[0259] Size indication configuration of message 3 in the random access procedure.

[0260] In one implementation, the random access time-frequency resource configuration includes at least one of the following:

[0261] 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;

[0262] Type of random access resources.

[0263] In one implementation, the power configuration of the random access signal includes at least one of the following:

[0264] Transmission power configuration of the random access signal;

[0265] Receiving power threshold configuration of the cell discovery signal used in the random access process.

[0266] In one implementation, the transmission power configuration of the random access signal includes at least one of the following:

[0267] The target reception power of the random access signal;

[0268] The power ramp step of the random access signal;

[0269] The maximum allowable transmission power of the random access signal.

[0270] In one implementation, the reception power threshold configuration includes at least one of the following:

[0271] The first reception power threshold, which 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 reception power of the cell discovery signal beam currently providing services based on the first reception power threshold;

[0272] The second reception power threshold, which 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 reception power threshold;

[0273] The third reception power threshold, which 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 reception power threshold;

[0274] The fourth reception power threshold, which is used to indicate that the terminal determines whether to allow initiating a random access procedure based on a four-step random access procedure based on the fourth reception power threshold.

[0275] In one implementation, the random access control parameter configuration includes at least one of the following:

[0276] The time length for monitoring the random access response message;

[0277] The maximum transmission resource of the random access signal;

[0278] The backoff time information.

[0279] 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:

[0280] Determine 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;

[0281] 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;

[0282] Determine the random access control parameter configuration for each of the dimensions according to the service type or access load of each of the dimensions;

[0283] Determine the size indication configuration of Message 3 in the random access procedure for each of the dimensions according to the service type or access load of each of the dimensions.

[0284] In one implementation, the determining 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:

[0285] Determine the target reception power of the random access signal for each of the dimensions according to the noise and interference levels sensed by the network-side device during the random access process for each of the dimensions;

[0286] Determine the power ramp step of the random access signal for each of the dimensions according to the sensitivity of the service to the access delay for each of the dimensions;

[0287] Determine the reception power threshold configuration of the cell discovery signal used during the random access process for each of the dimensions according to the network environment of each of the dimensions.

[0288] In one implementation, the determining the random access control parameter configuration for each of the dimensions according to the service type or access load of each of the dimensions includes at least one of the following:

[0289] Determine the time length for monitoring the random access response message for each of the dimensions according to at least one of the access load, service priority, and sensitivity of the service to the access delay for each of the dimensions;

[0290] Determine the maximum number of transmissions of the random access signal for each of the dimensions according to the access load or service type of each of the dimensions;

[0291] Determine the backoff time information for each of the dimensions according to the access load or sensitivity of the service to the access delay for each dimension.

[0292] In one implementation, the backoff time information includes at least one of the following: the mapping relationship between the backoff time identifier and the backoff time value, the backoff time indication.

[0293] In one implementation, when the determining module 1010 determines the random access configuration for each dimension of the target cell, it further includes: for any one of the dimensions, evenly distribute the random access resources of the dimension among at least one cell discovery signal beam of the dimension.

[0294] In one implementation, the sending module 1020 sends random access configuration information, including one of the following:

[0295] Send the random access configuration dedicated to the target dimension to the terminals in the target dimension;

[0296] Send the first random access configuration common to the target cell to the terminals in the target cell, and send the second random access configuration dedicated to the target dimension to the terminals in 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 for replacing partial configurations in the first random access configuration;

[0297] Send the third random access configuration common to the target cell to the terminals in the target cell, and send the fourth random access configuration dedicated to the target dimension to the terminals in 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;

[0298] Send the random access configuration information to the terminals in the target cell, where the random access configuration information includes the random access configurations of each dimension of the target cell.

[0299] The random access configuration device provided by the embodiments of the present application can implement each process implemented by the above-mentioned random access configuration method embodiments and achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0300] Optionally, as Figure 11 shown, the embodiments of the present application further provide a communication device 1100, including a processor 1101 and a memory 1102. A program or instruction that can run on the processor 1101 is stored on the memory 1102. For example, when the communication device 1100 is a terminal, when the program or instruction is executed by the processor 1101, each step of the above-mentioned random access method embodiment of the cell is implemented, and the same technical effects can be achieved. To avoid repetition, it will not be elaborated here; when the communication device 1100 is a network-side device, when the program or instruction is executed by the processor 1101, each step of the above-mentioned random access configuration method embodiment is implemented, and the same technical effects can be achieved. To avoid repetition, it will not be elaborated here.

[0301] The embodiments of the present application further provide a terminal, including a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement as Figure 4Steps in the method embodiments shown. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiments. Each implementation process and realization method of the above method embodiments can be applied to this terminal embodiment, and the same technical effects can be achieved. Specifically, Figure 12 It is a schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0302] The terminal 1200 includes but is not limited to at least some components such as 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 a processor 1210.

[0303] Those skilled in the art can understand that the terminal 1200 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 1210 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 12 The terminal structure shown in does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0304] It should be understood that in the embodiments of the present application, the input unit 1204 may include a graphics processing unit (GPU) 12041 and a microphone 12042. The graphics processing unit 12041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 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 at least one of a touch panel 12071 and 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. The 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 elaborated here.

[0305] In the embodiments of the present application, after the radio frequency unit 1201 receives downlink data from a network-side device, it can be transmitted to the processor 1210 for processing; in addition, the radio frequency unit 1201 can send uplink data to the network-side device. Generally, the radio frequency unit 1201 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0306] 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. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1209 may include volatile memory or 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 a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 1209 in the embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

[0307] The processor 1210 may include one or more processing units; optionally, the processor 1210 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 1210.

[0308] Among them, the radio frequency unit 1201 is used to receive random access configuration information from a network-side device, where 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 where the terminal is located.

[0309] The processor 1210 is configured to execute a random access procedure in the target cell dimension based on the random access configuration of the target dimension;

[0310] Among them, 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:

[0311] At least one sub-region of the target cell;

[0312] At least one subspace of the target cell;

[0313] At least one sub-cell of the target cell;

[0314] The coverage range of at least some of the multiple beams of the target cell;

[0315] A beam set, where the beam set includes the coverage range of at least some of the multiple beams of the target cell.

[0316] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment may refer to the relevant descriptions of the random access method of the cell in the method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0317] The embodiment of the present application further provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement as Figure 8 shown in the steps of the method embodiment. This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment. The various implementation processes and implementation manners of the above method embodiment can be applied to this network-side device embodiment, and the same technical effects can be achieved.

[0318] Specifically, the embodiment of the present application further provides a network-side device. As Figure 13 shown, this network-side device 1300 includes: an antenna 1301, a radio frequency device 1302, a baseband device 1303, a processor 1304, and a memory 1305. The antenna 1301 is connected to the radio frequency device 1302. In the uplink direction, the radio frequency device 1302 receives information through the antenna 1301 and sends the received information to the baseband device 1303 for processing. In the downlink direction, the baseband device 1303 processes the information to be sent and sends it to the radio frequency device 1302. The radio frequency device 1302 processes the received information and then sends it out through the antenna 1301.

[0319] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 1303, and the baseband device 1303 includes a baseband processor.

[0320] The baseband device 1303 may include, for example, at least one baseband board, and multiple chips are arranged on the baseband board, such as Figure 13As shown, one of the chips, for example, a baseband processor, 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 embodiments.

[0321] The network-side device may further include a network interface 1306, which is, for example, a Common Public Radio Interface (CPRI).

[0322] Specifically, the network-side device 1300 in the embodiments of the present application further includes: instructions or programs stored on the memory 1305 and executable on the processor 1304. The processor 1304 calls the instructions or programs in the memory 1305 to execute Figure 10 the methods executed by the modules shown, and achieves the same technical effects. To avoid repetition, it will not be elaborated here.

[0323] The embodiments of the present application further provide a readable storage medium, on which programs or instructions are stored. When the programs or instructions are executed by a processor, the Figure 4 or Figure 8 various processes of the method embodiments shown are implemented, and the same technical effects can be achieved. To avoid repetition, it will not be elaborated here.

[0324] Among them, the processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks, or optical disks, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0325] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the Figure 4 or Figure 8 various processes of the method embodiments shown, and the same technical effects can be achieved. To avoid repetition, it will not be elaborated here.

[0326] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip.

[0327] The embodiments of the present application further provide 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 Figure 4 or Figure 8 various processes of the method embodiments shown, and the same technical effects can be achieved. To avoid repetition, it will not be elaborated here.

[0328] The embodiment of the present application further provides a random access system, including: a terminal and a network-side device. The terminal can be used to execute the steps of the random access method of the 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.

[0329] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including 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 reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0330] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing the terminal or the network-side device to execute the methods described in various embodiments of the present application.

[0331] The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Those of ordinary skill in the art, under the inspiration of the present application and without departing from the spirit and scope protected by the claims of the present application, can also make many forms of embodiments, and these embodiments are all within the protection scope of the present application.

Claims

1. A random access method for a cell, characterized in that including: The terminal receives random access configuration information from a network-side device, where the random access configuration information includes random access configuration of 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 of the target dimension; where 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; coverage ranges of at least some beams among multiple beams of the target cell; a beam set, where the beam set includes coverage ranges of at least some beams among multiple beams of the target cell.

2. The method according to claim 1, characterized in that, The random access configuration includes at least one of the following: random access time-frequency resource configuration; power configuration of a random access signal; 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: density of random access resources, where the density of the 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.

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

5. The method according to claim 4, characterized in that, The transmission power configuration of the random access signal includes at least one of the following: target reception power of the random access signal; power ramp step of the random access signal; maximum allowed transmission power of the random access signal.

6. The method according to claim 4, wherein The reception power threshold configuration includes at least one of the following: a first reception 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 reception power of the cell discovery signal beam currently providing service based on the first reception power threshold; a second reception power threshold, used to indicate that the terminal determines whether to select random access resources on an auxiliary uplink carrier to send a random access signal based on the second reception power threshold; a third reception 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 based on the third reception power threshold; a fourth reception 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 based on the fourth reception power threshold.

7. The method according to any one of claims 2 to 6, characterized in that, The random access control parameter configuration includes at least one of the following: time length for monitoring a random access response message; maximum number of transmissions of the random access signal; backoff time information.

8. The method according to claim 7, characterized in that, The backoff time information includes at least one of the following: mapping relationship between a backoff time identifier and a backoff time value, backoff time indication.

9. The method according to any one of claims 1 to 8, characterized in that The terminal receiving random access configuration information from a network-side device includes 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 the 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, characterized in that, 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 the 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, characterized in that, The random access configuration includes at least one of the following: Random access time-frequency resource configuration; Power configuration of the random access signal; 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 the random access resources, where the density of the random access resources is used to indicate one of the following: the number of time-frequency positions of the 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 the random access resources.

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

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

15. The method according to claim 13, wherein The received power threshold configuration includes at least one of the following: The first received 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 received power of the cell discovery signal beam currently providing services based on the first received power threshold; The second received power threshold is used to indicate that the terminal determines whether to select random access resources 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 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, characterized in that 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, characterized in that The network device determines the random access configuration of each dimension of the target cell, including at least one of the following: The network 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 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 device determines the random access control parameter configuration for each dimension according to the service type or access load of each dimension; The network 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, characterized in that, The network 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 device determines the target received power of the random access signal for each dimension according to the noise and interference levels sensed by the network device during the random access process in each dimension; The network 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 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, characterized in that The network 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 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 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 device determines the backoff time information for each dimension according to the access load or sensitivity of the service to the access delay in each dimension.

20. The method according to any one of claims 10 to 19, characterized in that The network device's determination of the random access configuration of each dimension of the target cell further includes: For any of the said 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, characterized in that The network-side device sends random access configuration information, including 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 terminal of the target cell, and sends 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: 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 terminal of the target cell, and sends 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 perform the random access procedure. The network-side device sends the random access configuration information to the terminal of the target cell, where the random access configuration information includes the random access configurations of each dimension of the target cell.

22. A random access device for a cell, characterized in that, Including: 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 of 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 device 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. Receiving 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 the random access procedure. Receive the random access configuration information from the network side device, where the random access configuration information includes the random access configurations in various dimensions of the target cell.

24. A random access configuration device, characterized in that, Including: A determination module, configured to determine the random access configurations in various dimensions of the target cell, where the target cell includes at least one dimension, and the random access configurations of different dimensions are configured separately; A sending module, configured to send the 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; 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, characterized in that, The determination module determines the random access configurations in various dimensions of the target cell, including at least one of the following: Determine the 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 process for each dimension according to the service type or access load of each dimension.

26. The device according to claim 25, characterized in that, 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 reception 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 reception 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 device according to claim 25, characterized in that, 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 dimension according to the access load or service type of each dimension; Determine the backoff time information for each dimension according to the access load or sensitivity of the service to the access delay in each dimension.

28. The device according to claim 25, wherein, The determination module determines the random access configurations in various dimensions of the target cell, and further includes: For any one of the said dimensions, the random access resources of the dimension are evenly distributed among at least one cell discovery signal beam of the dimension.

29. The device according to any one of claims 24 to 28, characterized in that, The sending module sends random access configuration information, including one of the following: Sending the random access configuration dedicated to the target dimension to the terminals of the target dimension; Sending the first random access configuration common to the target cell to the terminals of the target cell, and sending 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: part of the configuration not provided in the first random access configuration, a configuration for replacing part of the configuration in the first random access configuration; Sending the third random access configuration common to the target cell to the terminals of the target cell, and sending the fourth random access configuration dedicated to the target dimension to the terminals of the target dimension, where the terminals use one of the third random access configuration and the fourth random access configuration to perform the random access procedure; Sending the random access configuration information to the terminals of the target cell, where the random access configuration information includes the random access configurations of each dimension of the target cell.

30. A terminal, characterized in that, Comprising a processor and a memory, the memory stores programs or instructions that can run on the processor, and when the programs or instructions are 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, characterized in that, Comprising a processor and a memory, the memory stores programs or instructions that can run on the processor, and when the programs or instructions are 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, characterized in that, Programs or instructions are stored on the readable storage medium, and when the programs or instructions are executed by the 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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