CN116456502A

CN116456502A - Random access method and communication device

Info

Publication number: CN116456502A
Application number: CN202210018184.9A
Authority: CN
Inventors: 张柔佳; 孙飞; 酉春华; 王珏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2023-07-18
Also published as: WO2023131156A1

Abstract

The application provides a random access method and a communication device. The method comprises the following steps: the terminal equipment determines a random access priority corresponding to a first characteristic and a second random access priority corresponding to a second characteristic, wherein the first characteristic and the second characteristic are characteristics corresponding to a service initiated by the terminal equipment, and the terminal equipment can refer to the indication of the network equipment, the capability of the terminal equipment or related information of the service initiated by the terminal equipment, and select the random access priority used for random access from the first random access priority and the second random access priority so as to guarantee the normal operation of communication.

Description

Random access method and communication device

Technical Field

The present application relates to the field of communications, and more particularly, to a method of random access and a communication device.

Background

With the development of mobile communication technology, how to perform random access by a terminal device to ensure normal performance of communication is a considerable problem.

Disclosure of Invention

The application provides a random access method and a random access device, so as to ensure normal operation of communication.

In a first aspect, a method of random access is provided. The method may be performed by the terminal device or may be performed by a component (such as a chip or a chip system) configured in the terminal device, which is not limited in this application. The method comprises the following steps: the terminal equipment determines a first random access priority corresponding to a first feature and a second random access priority corresponding to a second feature, wherein the first feature and the second feature are features corresponding to a service, and the terminal equipment determines the random access priority used by the terminal equipment for random access by referring to the sequence of the first random access priority and the second random access priority.

Based on the scheme, under the condition that the service initiated by the terminal equipment corresponds to at least two features and the at least two features correspond to different random access priorities, the terminal equipment can select a more proper random access priority for random access by referring to the ordering of the different random access priorities, so that the success rate of the random access of the terminal equipment is improved, and the normal operation of communication is guaranteed.

With reference to the first aspect, in certain implementations of the first aspect, the first feature or the second feature includes any one of: network slicing, small data transmission, coverage enhancement, limited capacity, multimedia priority traffic, or mission critical traffic.

Based on the above scheme, when the service initiated by the terminal device corresponds to at least two features of the network slice, the small data transmission, the coverage enhancement, the capacity limitation, the multimedia priority service or the critical task service, and the terminal device can have at least two random access priorities according to the features corresponding to the service, the terminal device can select the random access priority which is easier to be accessed randomly from the at least two random access priorities, thereby improving the success rate of the random access of the terminal device.

With reference to the first aspect, in certain implementations of the first aspect, the terminal device receives first indication information from the network device, the first indication information indicating ordering of the first random access priority and/or the second random access priority.

Based on the scheme, the network equipment indicates the sequence among different random access priorities through the first indication information, so that the problem of how to select a more proper random access priority to perform random access according to the sequence among the random access priorities when the terminal equipment determines that two random access priorities can be selected according to the characteristics of the initiated service is solved. The scheme not only can realize the centralized management of the network equipment on the terminal equipment behaviors, but also can reduce the complexity of the terminal equipment implementation.

With reference to the first aspect, in certain implementations of the first aspect, the ordering of the first random access priority and/or the second random access priority is determined based on first information including at least one of: delay requirement information of service or capability information of terminal equipment.

Based on the above scheme, the terminal device can determine the random access priority used by random access with reference to the first information, and the indication of the network device is not needed in the process again, compared with the scheme that the terminal device determines the random access priority used by random access with reference to the first indication information, the signaling overhead can be saved, and the terminal device is more autonomous in implementation.

With reference to the first aspect, in some implementations of the first aspect, the terminal device receives second indication information from the network device, where the second indication information indicates a random access priority corresponding to the first feature used by the terminal device, and the terminal device determines, with reference to the second indication information, a random access priority used by the terminal device for random access.

Based on the above scheme, the terminal device can determine which random access priority corresponding to the feature is selected for random access under the scene that the service initiated by the terminal device corresponds to at least two features with reference to the second indication information, and the second indication information can not indicate the ordering among different random access priorities, so that compared with the scheme that the network device indicates the ordering among different random access priorities through the first indication information, the scheme can save part of signaling overhead.

With reference to the first aspect, in some implementations of the first aspect, when the first feature indicated by the second indication information does not belong to a feature corresponding to a service initiated by the terminal device, the terminal device needs to determine a random access priority used for random access by referring to the first information, where the first information includes at least one of: delay requirement information of service or capability information of terminal equipment.

Based on the above scheme, if the second indication information indicates that, in a scenario where the service initiated by the terminal device corresponds to at least two features, the terminal device uses the random access priority corresponding to the first feature to perform random access, but the first feature is not the feature corresponding to the service initiated by the terminal device, at this time, the terminal device may determine, in combination with the first information, the random access priority more suitable for performing random access.

With reference to the first aspect, in some implementations of the first aspect, in a case where the terminal device fails to use the random access priority for the first time, the terminal device determines the random access priority used for the second time by referring to the ordering of the first random access priority and the second random access priority, and the random access priority used for the second time by the terminal device may be different from the random access priority used for the first time.

Based on the above scheme, when the terminal device fails to use the random access priority for the first time, the first indication information, the first information or the second indication information can be referred to, and the random access priority different from the random access priority used for the first time can be reselected to perform random access, thereby improving the success rate of the random access of the terminal device.

With reference to the first aspect, in some implementations of the first aspect, the terminal device receives a first correspondence and a second correspondence from the network device, where the first correspondence includes a correspondence between random access channel partitions and features, the second correspondence includes a correspondence between random access channel partitions and random access priorities, and the terminal device determines a first random access priority corresponding to the first feature and a second random access priority corresponding to the second feature by referring to the first correspondence and the second correspondence.

Based on the above scheme, the network device configures the random access priority with the random access channel partition as the granularity, so that at least two features can correspond to the same random access priority, and signaling overhead can be saved compared with the scheme of configuring the random access priority with the granularity as the feature.

With reference to the first aspect, in some implementations of the first aspect, the terminal device receives identification information from the network device, where the identification information indicates a feature to which the random access priority corresponding to the random access channel partition applies, the terminal device refers to the first correspondence, the second correspondence, and the identification information determines a first random access priority corresponding to the first feature and a second random access priority corresponding to the second feature.

In a second aspect, a method of random access is provided. The method may be performed by the network device or may be performed by a component (e.g., a chip or a system-on-chip) configured in the network device, which is not limited in this application. The method comprises the following steps: the network device sends a first corresponding relation and a second corresponding relation to the terminal device, wherein the first corresponding relation comprises a corresponding relation between the random access channel partition and the feature, the second corresponding relation comprises a corresponding relation between the random access channel partition and the random access priority, the first corresponding relation and the second corresponding relation are used for determining a first random access priority corresponding to the first feature and/or a second random access priority corresponding to the second feature, the first feature and the second feature are features corresponding to the service, and the network device sends first indication information to the terminal device, wherein the first indication information indicates ordering of the first random access priority and/or the second random access priority.

In a third aspect, a method of random access is provided. The method may be performed by the network device or may be performed by a component (e.g., a chip or a system-on-chip) configured in the network device, which is not limited in this application. The method comprises the following steps: the network device sends a first corresponding relation and a second corresponding relation to the terminal device, the first corresponding relation comprises a corresponding relation between the random access channel partition and the feature, the second corresponding relation comprises a corresponding relation between the random access channel partition and the random access priority, the first corresponding relation and the second corresponding relation are used for determining a first random access priority corresponding to the first feature and/or a second random access priority corresponding to the second feature, the first feature and the second feature are features corresponding to the service, the network device sends second indication information to the terminal device, and the second indication information indicates the terminal device to use the random access priority corresponding to the first feature.

With reference to the second or third aspect, in certain implementations of the second or third aspect, the first or second features include any one of: network slicing, small data transmission, coverage enhancement, limited capacity, multimedia priority traffic, or mission critical traffic.

Based on the above scheme, when the service initiated by the terminal device corresponds to at least two features of the network slice, the small data transmission, the coverage enhancement, the capacity limitation, the multimedia priority service or the critical task service, and the terminal device can have at least two random access priorities according to the features corresponding to the service, the terminal device can select the random access priority which is easier to be accessed randomly from the at least two random access priorities, thereby improving the success rate of the random access of the terminal device. With reference to the second aspect or the third aspect, in some implementations of the second aspect or the third aspect, the network device sends identification information to the terminal device, where the identification information indicates a feature to which the random access priority corresponding to the random access channel partition applies, and the identification information is used to determine a first random access priority corresponding to the first feature and/or a second random access priority corresponding to the second feature.

In a fourth aspect, a communication device is provided. The device may be a terminal device, or may be a component (such as a chip or a chip system) configured in the terminal device, which is not limited in this application. The device comprises a processing unit and a receiving and transmitting unit: the processing unit is configured to determine a first random access priority corresponding to a first feature and a second random access priority corresponding to a second feature, where the first feature and the second feature are features corresponding to a service, and determine a random access priority used by the terminal device for random access by referring to a ranking of the first random access priority and the second random access priority.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the first feature or the second feature includes any one of: network slicing, small data transmission, coverage enhancement, limited capacity, multimedia priority traffic, or mission critical traffic.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is configured to receive first indication information from a network device, where the first indication information indicates ordering of the first random access priority and/or the second random access priority.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the ordering of the first random access priority and the second random access priority is determined based on first information, the first information including at least one of: delay requirement information of service or capability information of terminal equipment.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is configured to receive second indication information from the network device, where the second indication information indicates a random access priority corresponding to the first feature used by the terminal device, and the processing unit is configured to determine a random access priority used by the terminal device for random access with reference to the second indication information.

With reference to the fourth aspect, in some implementations of the fourth aspect, when the first feature indicated by the second indication information does not belong to a feature corresponding to a service initiated by the terminal device, the processing unit is further configured to determine a random access priority used by the terminal device for random access with reference to the first information, where the first information includes at least one of: delay requirement information of service or capability information of terminal equipment.

It should be understood that when the device is a terminal device, the capability information of the terminal device is the capability information of the device, and when the device is a chip or a chip system, the capability information of the terminal device is the capability information of the device on which the chip or the chip system is mounted.

With reference to the fourth aspect, in some implementations of the fourth aspect, in a case that the terminal device fails to use the random access priority for the first time, the processing unit is further configured to determine the random access priority used by the second time random access with reference to the ordering of the first random access priority and the second random access priority, where the random access priority used by the second time random access by the terminal device is different from the random access priority used by the first time random access.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to receive a first correspondence and a second correspondence from the network device, where the first correspondence includes a correspondence between a random access channel partition and a feature, the second correspondence includes a correspondence between a random access channel partition and a random access priority, and the processing unit is further configured to determine a first random access priority corresponding to the first feature and a second random access priority corresponding to the second feature with reference to the first correspondence and the second correspondence.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to receive identification information from the network device, where the identification information indicates a feature to which the random access priority corresponding to the random access channel partition applies, and the processing unit is further configured to refer to the first correspondence, the second correspondence, and the identification information determine a first random access priority corresponding to the first feature and a second random access priority corresponding to the second feature.

In a fifth aspect, a communication device is provided. The apparatus may be a network device, or may be a component (such as a chip or a system-on-chip) configured in the network device, which is not limited in this application. The device comprises a processing unit and a receiving and transmitting unit: the transceiver unit is configured to send a first correspondence and a second correspondence to the terminal device, where the first correspondence includes a correspondence between the random access channel partition and a feature, the second correspondence includes a correspondence between the random access channel partition and a random access priority, the first correspondence and the second correspondence are used to determine a first random access priority corresponding to the first feature and/or a second random access priority corresponding to the second feature, the first feature and the second feature are features corresponding to a service, and the transceiver unit is further configured to send first indication information to the terminal device, where the first indication information indicates ordering of the first random access priority and/or the second random access priority.

In a sixth aspect, a communication device is provided. The apparatus may be a network device, or may be a component (such as a chip or a system-on-chip) configured in the network device, which is not limited in this application. The device comprises a receiving and transmitting unit: the transceiver unit is configured to send a first correspondence and a second correspondence to the terminal device, where the first correspondence includes a correspondence between the random access channel partition and a feature, the second correspondence includes a correspondence between the random access channel partition and a random access priority, the first correspondence and the second correspondence are used to determine a first random access priority corresponding to the first feature and/or a second random access priority corresponding to the second feature, the first feature and the second feature are features corresponding to a service, and the transceiver unit is further configured to send second instruction information to the terminal device, where the second instruction information instructs the terminal device to use the random access priority corresponding to the first feature.

With reference to the fifth or sixth aspect, in certain implementations of the fifth or sixth aspect, the first or second features include any one of: network slicing, small data transmission, coverage enhancement, limited capacity, multimedia priority traffic, or mission critical traffic.

With reference to the fifth aspect or the sixth aspect, in some implementations of the fifth aspect or the sixth aspect, the transceiver unit is further configured to send identification information to the terminal device, where the identification information indicates a feature to which the random access priority corresponding to the random access channel partition is applicable, and the identification information is used to determine a first random access priority corresponding to the first feature and/or a second random access priority corresponding to the second feature.

In a seventh aspect, a communications apparatus is provided, the apparatus comprising a processor coupled to a memory and operable to execute instructions in the memory to implement the method of the first aspect, or any one of the possible implementations of the first aspect. Optionally, the apparatus further comprises a memory, which may be disposed separately from the processor or may be disposed centrally. Optionally, the apparatus further comprises a communication interface, the processor being coupled to the communication interface.

In one implementation, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the apparatus is a chip configured in a terminal device. When the apparatus is a chip configured in a terminal device, the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin, or related circuits on the chip or a system of chips, or the like. The processor may also be embodied as processing circuitry or logic circuitry.

Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input/output interface may be an input/output circuit.

In a specific implementation process, the processor may be one or more chips, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, various logic circuits, and the like. The input signal received by the input circuit may be, but not limited to, received by and input to the receiver, the output signal output by the output circuit may be, but not limited to, output to and transmitted by the transmitter, and the input circuit and the output circuit may be the same circuit, which functions as the input circuit and the output circuit, respectively, at different times. The embodiments of the present application do not limit the specific implementation manner of the processor and the various circuits.

In an eighth aspect, a communications apparatus is provided, the apparatus comprising a processor coupled to a memory and operable to execute instructions in the memory to implement the method of the second or third aspect, or any one of the possible implementations of the second or third aspect, as described above. Optionally, the apparatus further comprises a memory, which may be disposed separately from the processor or may be disposed centrally. Optionally, the apparatus further comprises a communication interface, the processor being coupled to the communication interface.

In another implementation, the apparatus is a chip configured in a network device. When the apparatus is a chip configured in a network device, the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin, or related circuitry on the chip or system-on-chip. The processor may also be embodied as processing circuitry or logic circuitry.

A ninth aspect provides a communications apparatus comprising logic circuitry for coupling with an input/output interface through which data is transmitted to perform any of the above-described first to third aspects, and a method in any of the possible implementations of the first to third aspects.

In a tenth aspect, there is provided a computer readable storage medium storing a computer program (which may also be referred to as code, or instructions) which, when run on a computer, causes the computer to perform any of the above-described first to third aspects, and the method in any of the possible implementations of the first to third aspects.

In an eleventh aspect, there is provided a computer program product comprising: a computer program (which may also be referred to as code, or instructions) which, when executed, causes a computer to perform the method of any of the above-described first to third aspects, and any possible implementation of the first to third aspects.

The advantages of the fourth to eleventh aspects may be specifically referred to the description of the advantages of the first to third aspects, and are not described here.

Drawings

Fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present application.

Fig. 2 is a schematic flow chart for random access according to an embodiment of the present application.

Fig. 3 is a flowchart of a method for determining random access priority according to an embodiment of the present application.

Fig. 4 is a schematic diagram of dividing random access resources according to an embodiment of the present application.

Fig. 5 is a flowchart of another method for determining random access priority according to an embodiment of the present application.

Fig. 6 is a flowchart of another method for determining random access priority according to an embodiment of the present application.

Fig. 7 is a schematic block diagram of a communication device provided in an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present application.

Fig. 11 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of a network architecture 100 according to an embodiment of the present application.

Fig. 1 shows a terminal device 101, a network device 102, and a core network device 103 in a 5G system. To better meet different service requirements, the network device 102 and the core network device 103 virtualize a plurality of (only two are illustrated in fig. 1) isolated logic subnets to provide services for users in a targeted manner. For example, fig. 1 shows a logical subnet corresponding to network slice #1, and a logical subnet corresponding to network slice # 2. Different network slices provide different services for the terminal device, for example, the terminal device 101 accesses the network device 102, the network device 102 and the core network device 103 provide enhanced mobile broadband (enhanced Mobile Broadband, emmbb) services for the terminal device 101 through the network slice #1, and the network device 102 and the core network device 103 provide ultra-reliable ultra-low latency communication (URLLC) services for the terminal device 101 through the network slice # 2. Network slice #1 may be referred to as an emmbb slice and network slice #2 may be referred to as a URLLC slice.

For random access of the network slice, the network device carries network slice random access configuration information in a broadcast message, and when a network slice service initiated by the terminal device belongs to a service corresponding to the network slice #1, the network side serves the terminal device through the network slice # 1.

For example, if the terminal device 101 is to initiate an eMBB service, the registration request may carry corresponding single network slice selection assistance information, through which the network device 102 selects an access and mobility management function (access and mobility management function, AMF) capable of providing the terminal device 101 with an eMBB service, and after the AMF is selected, a protocol data unit (protocol data unit, PDU) session is established through the AMF, signaling interaction between the network device and the terminal device, and data transmission is subsequently performed through the PDU session.

It should be understood that fig. 1 is only an example, and the scope of protection of the present application is not limited in any way. The embodiments provided in the embodiments of the present application may also relate to a network node (device) not shown in fig. 1, and of course, the embodiments provided in the embodiments of the present application may also include only the network node (device) shown in fig. 1.

Terminal equipment in the embodiment of the application: may also be referred to as a terminal, access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user equipment. The terminals in embodiments of the present application may be mobile phones (mobile phones), tablet computers (pad), computers with wireless transceiving functionality, virtual Reality (VR) terminals, augmented reality (augmented reality, AR) terminals, wireless terminals in industrial control (industrial control), wireless terminals in unmanned aerial vehicle (self driving), wireless terminals in telemedicine (remote media), wireless terminals in smart grid (smart grid), wireless terminals in transportation security (transportation safety), wireless terminals in smart city (smart city), wireless terminals in smart home (smart home), cellular phones, cordless phones, session initiation protocol (session initiation protocol, SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistant, PDA), handheld devices with wireless communication functionality, computing devices or other processing devices connected to a wireless modem, vehicle devices, wearable devices, terminals in a 5G network or future networks, etc.

The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wearing and developing wearable devices by applying a wearable technology, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

The network device in the embodiment of the present application may be any communication device having a wireless transceiver function for communicating with a terminal device. The network devices include, but are not limited to: an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home evolved Node B, heNB, or home Node B, HNB), a baseBand unit (BBU), an Access Point (AP) in a wireless fidelity (wireless fidelity, WIFI) system, a wireless relay Node, a wireless backhaul Node, a transmission point (transmission point, TP), or a transmission reception point (transmission and reception point, TRP), etc., may also be 5G, such as a gNB in an NR system, or a transmission point (TRP or TP), one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or may also be a network Node constituting a gNB or a transmission point, such as a baseBand unit (BBU), or a Distributed Unit (DU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and DUs. The gNB may also include an active antenna unit (active antenna unit, AAU). The CU implements part of the functionality of the gNB and the DU implements part of the functionality of the gNB. For example, the CU is responsible for handling non-real time protocols and services, implementing the functions of the radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC), medium access control (media access control, MAC) and Physical (PHY) layers. The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna. The information of the RRC layer is generated by the CU and finally becomes PHY layer information through PHY layer encapsulation of DU, or is converted from the information of the PHY layer. Thus, under this architecture, higher layer signaling, such as RRC layer signaling, may also be considered to be sent by DUs, or by dus+aaus. It is understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node.

The core network device of the embodiment of the application has the functions of providing user connection, managing users and carrying out service, and is used as a bearing network to provide an interface to an external network. For example, in a 5G system, the core network device may include an access and mobility management function (access and mobility management function, AMF), a network slice selection function (network slice selection function, NSSF). The AMF mainly performs functions such as mobility management, access authentication/authorization, etc., and is also responsible for transferring user policies between the terminal and the policy control function (policy control function, PCF). The NSSF is responsible for determining which network slice service should be provided to the terminal device according to the network slice selection auxiliary information or the single network slice selection auxiliary information provided by the network access terminal device, and further determining which AMF provides the access service for the terminal device.

It should be understood that in future communication systems, such as 6G communication systems, the network element or device may still use its name in the 5G communication system, or may have other names, which embodiments of the present application do not limit. The functions of the network element or the device can be completed by one independent network element or can be completed by a plurality of network elements together. In an actual deployment, the network elements in the core network may be deployed on the same or different physical devices. For example, as one possible deployment, the AMF and SMF may be deployed on the same physical device. For another example, the network element of the 5G core network may be deployed on the same physical device as the network element of the 4G core network. The above list of network elements included in the core network device is only an example, and the protection scope of the present application is not limited in any way. The core network device may further include the network elements not listed above, and of course, the core network device may also include only some of the network elements listed above, which is not limited in this embodiment of the present application.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global mobile communication (global system formobile communications, GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), LTE system, advanced long term evolution (LTE-a) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile communication system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication system, 5G system or future evolution communication system, car-to-other devices (vehicle-to-X V X), wherein V2X may include car-to-internet (vehicle to network, V2N), car-to-car (vehicle to vehicle, V2V), car-to-infrastructure (vehicle to infrastructure, V2I), car-to-pedestrian (vehicle to pedestrian, V2P) and the like, workshop communication long term evolution technology (long term evolution-vechicle, LTE-V), car networking, machine-type communication (machine type communication, MTC), internet of things (Internet of things, ioT), machine-to-long term evolution (long term evolution-M), machine-to-M (M2M), machine-to-M (machine to machine), and the like.

In the initialization process of the random access parameters, the network device configures different random access priorities (RA-priority) for different random access types. The random access priority is used to apply a random access procedure of a specific access identity on any uplink partial Bandwidth (BWP) of a specific cell (specific cell), where the specific cell refers to a primary cell of a primary cell group or a primary secondary cell of a secondary cell group in a dual connectivity mode, and refers to the primary cell in other communication modes.

Random access priority: the method comprises two parameters of high-priority power lifting step size (powerRampingStepHighProgrammity) and avoidance index (backoff indicator, BI) scaling factor (scaling factor), and the avoidance index scaling factor is hereinafter referred to as scaling factor BI. The high priority power lifting step length is used for indicating the lifting step length of the transmitting power of the terminal equipment in the priority random access process (namely, the maximum try times preambbleTransMax is not reached when the random access process of the terminal equipment fails, at this time, the terminal equipment can send a random access request again after lifting the power by the high priority power lifting step length on the basis of the last transmitting power so as to improve the access success rate), and the scaling factor BI is used for controlling the avoiding time of the terminal equipment which is separated between two random access information occasion (random access channel occasion, RO) requests.

The network device configures different random access resource configurations for different network slices, or different groups of network slices, including but not limited to: the method comprises the steps of random access priority, indication information of a random access preamble sequence, indication information of time-frequency resources occupied by the random access preamble sequence, timing time length of a contention resolution timer, maximum number of random access and a scheduling message size threshold. The basis of the network device configuration may be slice related information such as S-nsai and RSA ID, so as to implement differentiated treatment on different network slice services, and implement resource isolation of different network slices.

The network slice may be simply referred to as a slice, and the slice appearing in this application is understood to be a network slice.

Based on different random access resources, the network device can identify the network slice currently requested by the terminal device, and judge whether the network slice service request can be accepted earlier, so as to avoid unnecessary signaling interaction between the network device and the core network.

If the network device configures the random access priority #1 corresponding to the network slicing service and the random access priority #2 corresponding to the MPS/MCS at the same time, the terminal device initiates the service #1, where the service #1 is the network slicing service, and meanwhile, the service #1 further includes the MPS/MCS feature, at this time, two random access priorities are available for the terminal device, and the terminal device needs to determine whether to use the random access priority #1 or use the random access priority #2 to perform random access according to the indication of the network device. In one embodiment, the network device sends a coverage indication to the terminal device, if the coverage indication indicates that the random access priority of the slice service covers the random access priority of the MPS/MCS, that is, the terminal device selects the random access priority #1 corresponding to the slice service to perform random access, and if the coverage indication indicates that the random access priority of the MPS/MCS covers the random access priority of the slice service, that is, the terminal device selects the random access priority #2 corresponding to the MPS/MCS to perform random access.

The above describes how the terminal device selects the random access priority to perform the random access procedure when the network device configures the random access priority for the services conforming to the characteristics of the network slice and MPS/MCS, respectively.

But in addition to the characteristics of network slicing, MPS/MCS, etc., more characteristics may be proposed in the future for the service initiated by the terminal device, such as small data transmission, coverage enhancement, limited capability, etc. When the features corresponding to the service #1 initiated by the terminal device include features other than the network slice and the MPS/MCS, for example, when the features corresponding to the service #1 are small data transmission and the network slice, the terminal device cannot select the random access priority to perform random access through the above embodiment.

To facilitate understanding of the embodiments of the present application, the following features of the service are explained:

1. small data transmissions (small data transmission, SDT), the corresponding characteristics of the traffic initiated by a terminal device may include SDT when the number of data packets generated by the terminal device is less than a certain threshold and/or when the terminal device measures that the signal quality of the downlink reference signal is above a certain threshold (e.g., the terminal device measures that the received power of the downlink reference signal is above a certain threshold). That is, when the feature corresponding to the service initiated by the terminal device includes the SDT, it indicates that the number of data packets generated by the service is smaller than a specific threshold, and/or the received power of the downlink reference signal corresponding to the terminal device initiating the service is higher than a specific threshold. For example, features corresponding to services initiated by terminal devices of the massive internet of things communication (mctc) type include SDT.

2. Coverage enhancement (coverage enhancement, CE), when a certain terminal device measures that the signal quality of a downlink reference signal is smaller than a certain specific threshold, for example, when a certain terminal device measures that the received power of the downlink reference signal is smaller than a certain specific threshold, the terminal device may determine that the terminal device is a remote terminal device, where the characteristics corresponding to the service initiated by the terminal device include coverage enhancement, and a terminal device that is typically located at a distance from the network device smaller than a certain threshold is referred to as a remote terminal device.

3. The terminal devices with limited capabilities (reduced capability, redCap), wearable devices, video monitoring, industrial wireless sensors, etc. may be referred to as limited-capability terminal devices, where the maximum bandwidth supported by the limited-capability terminal device is smaller than the maximum bandwidth supported by the normal terminal device, and the number of transceiving antennas of the limited-capability terminal device is smaller than the number of transceiving antennas of the normal terminal device. Features corresponding to services initiated by the limited-capability terminal device include limited capabilities. A limited capability terminal device is also referred to as a low capability terminal device.

4. The MPS, network device provides priority handling for services that include MPS features to increase the likelihood that voice, video, and data communication sessions of an authorized service user will succeed. I.e. terminal equipment subscribed to MPS service, or terminal equipment authorized by MPS, may preferentially obtain the next available radio channel for access and establish a session in case of congestion of the public land mobile network (public land mobile network, PLMN) compared to other PLMN users (users not subscribed to MPS service, or users not authorized for MPS). The features corresponding to the service initiated by the MPS terminal device (the terminal device has MPS authorization) include MPS.

5. MCS, mission critical requirements include lower setup and transmission delay, high availability and reliability, capability to handle large numbers of users and devices, strong security and priority, and preemption handling. This feature primarily provides communication services for end users of mission critical organizations or other businesses and organizations (e.g., utilities, railroads). For example, the characteristics corresponding to the service initiated by the terminal device in the utility or railway system include the MCS.

The above features of the service are merely examples, and the features of the service in the embodiments of the present application are not limited thereto, and may include other features classified according to a service type, a service class (a service type, or a service class may be classified according to a type or a function type of the terminal device), and the like.

It should be appreciated that the above features may also understand the characteristics, properties. When the network device configures the random access priority, the network device may be configured according to a characteristic (functional characteristic), the characteristic (functional characteristic) may be understood as a characteristic (functional characteristic) of the terminal device, and when the terminal device with the specific characteristic (functional characteristic) initiates a service, the service has an attribute corresponding to the specific characteristic (functional characteristic), and the attribute may also be understood as a feature. For example, if the network device configures the random access priority #1 according to the feature of limited capability, the feature corresponding to the service initiated by the terminal device having the feature of limited capability is limited capability, and the attribute of the service initiated by the terminal device having the feature of limited capability is limited capability. The characteristics of the service (or attributes of the service) are thus corresponding to the characteristics (or functional characteristics), and the description will vary from the terminal device perspective to the network device perspective. For a better understanding of the present application, the present application describes the features, characteristics and attributes of the service in a unified manner, and the differences in understanding the network device and the terminal device can refer to the above description.

Fig. 2 is a schematic flow chart for random access according to an embodiment of the present application. The method 200 shown in fig. 2 includes:

in step S210, the terminal device determines a first random access priority corresponding to a first feature and a second random access priority corresponding to a second feature, where the first feature and the second feature are features corresponding to a service.

Optionally, the first feature or the second feature comprises any one of: network slicing, small data transmission, coverage enhancement, capability limitation, MPS, or MCS.

It should be understood that the service (service) may be a service initiated by a terminal device or a service requested by a terminal device, for example, a network slice service, an MPS service (a service initiated by a terminal device subscribed to MPS), an MCS service (a service initiated by a terminal device subscribed to MCS), a voice service, or a video service, which is not limited in this application.

For example, the first feature corresponding to the service #1 initiated by the terminal device is network slicing, the second feature is small data transmission, the random access priority configured by the network device for the network slicing service is random access priority #1 (first random access priority), and the random access priority configured by the network device for the small data transmission service is random access priority #2 (second random access priority). At this time, the random access priority corresponding to the service #1 includes a random access priority #1 and a random access priority #2.

The network device may configure random access priority for different features in two ways:

mode 1:

the network device configures random access priorities for different features, for example, the network device configures random access priority #1 for network slices, configures random access priority #2 for small data transmission, configures random access priority #3 for coverage enhancement, configures random access priority #4 for capability limitation, and configures random access priority #5 for MPS/MCS, where each random access priority may be different, or part of the random access priorities may be the same, for example, the random access priority #2 and the random access priority #4 may be the same, and the application does not limit the number of features to which each random access priority is applicable.

It should be appreciated that if the random access priority #1 and the random access priority #2 are different, at least one of the parameters high priority power boost step size and the scaling factor BI of the random access priority #1 is different from the parameters of the random access priority #2, for example, the high priority power boost step size and the random access priority #2 of the random access priority #1 are different, or the scaling factor BI and the random access priority #2 of the random access priority #1 are different, or the high priority power boost step size and the scaling factor BI of the random access priority #1 are both different from the random access priority # 2. If random access priority #2 and random access priority #4 are the same, the high priority power boost step size and scaling factor BI of random access priority #2 are the same as random access priority # 4.

In this mode 1, the terminal device may determine the random access priority corresponding to the service according to the feature of the initiated service and the random access priorities corresponding to different features configured by the network device.

Mode 2:

the random access resource of the air interface is divided into at least two random access resource parts, each random access resource part can be called a random access channel partition (also called a random access channel part, a random access channel area, a random access channel partition, a random access resource part, a random access resource area, a random access resource partition, which is not limited in this application), and different random access channel partitions correspond to different characteristics.

The different random access channel partitions may be understood as different logical partitions into which hardware and/or software resources on a random access channel are partitioned according to a certain policy, and a terminal device that uses a certain random access channel partition to perform random access may only use the hardware/software resources within the range of the resources to which the random access channel partition is allocated to initiate random access.

For example, the random access resource is divided into 4 random access channel partitions including a random access channel partition #1, a random access channel partition #2, a random access channel partition #3, and a random access channel partition #4. Wherein the corresponding features of the random access channel partition #1 include a network slice group #1, a small data transmission #1, and an MPS #1. The corresponding features of random access channel partition #2 include network slice group #2, small data transmission #2, and MPS #2. The corresponding features of random access channel partition #3 include network slice group #3 and capability limited #3. The corresponding features of random access channel partition #4 include network slice group #4, small data transmission #4, mps #4, mcs #4, and capability limited #4.

It should be understood that the random access channel partition #1, the random access channel partition #2, the random access channel partition #3, and the random access resources (including hard/software resources) corresponding to the random access channel partition #4 are different. The network slice group includes at least one network slice, and the network slices in different network slice groups deployed on the same network device are different.

The small data transmission service may be classified into different classes according to the number of data packets generated by the service, for example, the small data transmission service is classified into a small data transmission #1 service and a small data transmission #2 service, wherein the number of data packets generated by the small data transmission #1 service is smaller than a first threshold value, the number of data packets generated by the small data transmission #2 service is smaller than a second threshold value, and the first threshold value and the second threshold value are different.

MPS traffic may be classified into different MPS characteristics with reference to at least one of priority level, transmission delay, availability and reliability, capability to handle a large number of users and devices, or strong security, for example, MPS traffic is classified into MPS #1, MPS #2, MPS #3, MPS #4 with reference to priority level, and MPS #1, MPS #2, MPS #3, MPS #4 are different in priority level. For another example, if MPS traffic is divided into mps#1, mps#2, mps#3, mps#4 with reference to the transmission delay, mps#1, mps#2, mps#3, mps#4 are different in terms of the transmission delay.

The capability restriction may be classified into capability restriction #1, capability restriction #2, capability restriction #3, capability restriction #4 with reference to at least one of a level of capability restriction, the number of transceiving antennas, or a maximum bandwidth supported by the terminal device. For example, the number of the reference transceiving antennas divides the capacity limitation into capacity limitation #1, capacity limitation #2, capacity limitation #3, and capacity limitation #4, and the capacity limitation #1, capacity limitation #2, capacity limitation #3, and the number of the transceiving antennas corresponding to the capacity limitation #4 are different.

The coverage enhancement #1, coverage enhancement #2, coverage enhancement #3 appearing later may be understood as different coverage enhancement features according to the distance division of the terminal device from the network device, for example, coverage enhancement #1, coverage enhancement #2, and the distance of the terminal device corresponding to coverage enhancement #3 from the network device is different.

It should also be understood that, when dividing features, features such as small data transmission, coverage enhancement, limited capability, MPS or MCS may not be subdivided, or only some of the features may be subdivided, and no matter what division method is adopted, features corresponding to different random access channel partitions are different. For example, if the small data transmission is not subdivided, the feature corresponding to the random access channel partition #1 does not include the small data transmission when the feature corresponding to the random access channel partition #2 includes the small data transmission. For another example, if the small data transmission is subdivided, the feature corresponding to the random access channel partition #1 may include the small data transmission #2 when the feature corresponding to the random access channel partition #1 includes the small data transmission # 1. Coverage enhancement, limited capability, MPS or MCS, etc. features can be similarly used.

The network device configures a random access priority #1 for a random access channel partition #1, a random access priority #2 for a random access channel partition #2, a random access priority #3 for a random access channel partition #3, and a random access priority #4 for a random access channel partition #4.

Illustratively, in this mode 2, if the first feature corresponding to the service initiated by the terminal device is the network slice group #2 and the second feature is the capability limited #3, it may be determined that the random access priority corresponding to the service includes the random access priority #2 and the random access priority #3.

It should be understood that, in the embodiment of the present application, the number of random access resource divisions, and the name of each random access resource portion after division, and the feature number corresponding to each random access resource portion are not limited.

Step S220, the terminal device refers to the first random access priority and the second random access priority to determine the random access priority used by the terminal device for random access.

The ranking may be understood as a sequence, an order, or the like, and the priority may also be an embodiment of the ranking, and if the random access priority corresponding to the service includes the random access priority #1 and the random access priority #2, when the terminal device selects the random access priority, whether to select the random access priority #1 for random access or select the random access priority #2 for random access is determined by the ranking of the random access priority #1 and the random access priority # 2.

For example, if the ranking of the random access priority #1 is higher than the ranking of the random access priority #2, the terminal device determines the random access priority #1 as the random access priority used by the terminal device for random access, and the subsequent terminal device uses the random access priority #1 for random access. If the ranking of the random access priority #2 is higher than the ranking of the random access priority #1, the terminal device determines the random access priority #2 as the random access priority used by the terminal device for random access, and the subsequent terminal device uses the random access priority #2 for random access.

By way of example, the terminal device initiated traffic corresponds to 3 features including network slicing, small data transmission and coverage enhancement. The method comprises the steps of carrying out network slicing on a random access priority #1 corresponding to the network slice, carrying out small data transmission on a random access priority #2 corresponding to the small data transmission, covering and enhancing a random access priority #3 corresponding to the small data transmission, wherein the sequence of the random access priority #2 > the sequence of the random access priority #3 > the sequence of the random access priority #1, ">" indicates that the sequence is forward (the sequence is forward, the terminal equipment is preferentially selected), and then determining the random access priority #2 as the random access priority used for random access by the terminal equipment.

The different ways in which the terminal device determines the random access priority used for random access in case the network device configures the random access priority of at least two features are described below.

Fig. 3 is a flowchart of a method for determining random access priority according to an embodiment of the present application. The method 300 shown in fig. 3 indicates to the terminal device a scheme of ordering at least two random access priorities for the network device, including:

in step S310, the network device sends random access priorities corresponding to at least two features to the terminal device, and the terminal device receives the random access priorities corresponding to the at least two features.

Optionally, the random access priorities corresponding to the at least two features are carried in a broadcast message, e.g., a system message block 1 (session information block, SIB) message. Alternatively, the random access priorities corresponding to the at least two features may be carried in a message sent by other network devices to the terminal device, which is not limited in this application.

Optionally, the random access priorities corresponding to the at least two features include at least two of:

random access priority #1 corresponding to network slice, random access priority #2 corresponding to small data transmission, random access priority #3 corresponding to coverage enhancement, random access priority #4 corresponding to capacity limitation, and random access priority #5 corresponding to mps or MCS.

Taking the network slice characteristic as an example, the core network element sends the corresponding relation between the slice and the slice group (such as the corresponding relation between the slice identifier and the slice group identifier) to the terminal device, and the network device broadcasts the random access priority corresponding to the slice group (such as the random access priority corresponding to the slice group identifier) to the terminal device, so that the terminal device can determine the random access priority of the specific slice according to the corresponding relation between the slice and the slice group and the random access priority corresponding to the slice group.

Illustratively, a core network element (e.g., AMF) sends a correspondence between a slice and a slice group identity to a terminal device through a NAS message:

slice group # 1= { slice 1, slice 2};

slice group # 2= { slice 4};

slice group # 3= { slice 3, slice 5}.

The network device broadcasts the random access priority as granularity with the slice groups (the slices can be divided into slice groups according to the types of the slices), namely, the random access priority is associated with the identification of the slice groups.

Other features, such as small data transmissions, coverage enhancement, limited capability, MPS or MCS corresponding random access priority network devices may also be broadcast in a similar manner as above.

Optionally, the network device broadcasts with a granularity characterized in that the broadcast message includes an identifier of the small data transmission and a corresponding random access priority, an identifier of the coverage enhancement and a corresponding random access priority, an identifier of the capability limitation and a corresponding random access priority, an identifier of the MPS and a corresponding random access priority, and an identifier of the MCS and a corresponding random access priority.

Or the network device broadcasts with smaller characteristics as granularity, for the small data transmission characteristics, if the small data transmission characteristics are divided into 3 small data transmission #1, small data transmission #2 and small data transmission #3, the broadcast message comprises the identification of the small data transmission #1 and the corresponding random access priority, the identification of the small data transmission #2 and the corresponding random access priority, and the identification of the small data transmission #3 and the corresponding random access priority.

For the coverage enhancement feature, if the coverage enhancement feature is divided into 3, coverage enhancement #1, coverage enhancement #2, and coverage enhancement #3, the broadcast message includes the identifier of coverage enhancement #1 and the corresponding random access priority, the identifier of coverage enhancement #2 and the corresponding random access priority, and the identifier of coverage enhancement #3 and the corresponding random access priority.

For the capability limited feature, if the capability limited feature is divided into 3, capability limited #1, capability limited #2, and capability limited #3, the broadcast message includes the identifier of the capability limited #1 and the corresponding random access priority, the identifier of the capability limited #2 and the corresponding random access priority, and the identifier of the capability limited #3 and the corresponding random access priority.

For the MPS (MCS) feature, if the MPS (MCS) feature is divided into 3, MPS (MCS) #1, MPS (MCS) #2, and MPS (MCS) #3, the broadcast message includes an identifier of MPS (MCS) #1 and a corresponding random access priority, an identifier of MPS (MCS) #2 and a corresponding random access priority, and an identifier of MPS (MCS) #3 and a corresponding random access priority.

It should be understood that, in addition to the foregoing broadcasting manner, the network device may broadcast random access priorities corresponding to different features in other manners, which is not limited in this application. The step S310 is a method for configuring random access priority for different features (with feature as granularity configuration) by the network device. This may correspond to mode 1 in step S210 described above. In addition to this, there is another arrangement. This may correspond to mode 2 (granularity of random access channel partitioning) in step S210, specifically as step S310':

in step S310', the network device sends a first correspondence and a second correspondence to the terminal device, where the first correspondence includes a correspondence between a random access channel partition and a feature, and the second correspondence includes a correspondence between a random access channel partition and a random access priority. Correspondingly, the terminal equipment receives the first corresponding relation and the second corresponding relation.

Corresponding to mode 2 in step S210, the random access resources of the air interface are divided into at least two random access channel partitions, different random access channel partitions corresponding to different features. As shown in fig. 4, the random access resource is divided into 3 random access channel partitions including a random access channel partition #1, a random access channel partition #2, and a random access channel partition #3. Wherein the corresponding features of the random access channel partition #1 include a network slice group #1, a small data transmission #1, and an MPS #1. The corresponding features of random access channel partition #2 include network slice group #2, small data transmission #2, and MPS #2. The corresponding features of random access channel partition #3 include network slice group #3 and capability limited #3.

It should be understood that fig. 4 divides MPS into features corresponding to random access channel partitions #1 and #2 when dividing the random access channel partitions. According to the existing cell design, the random access priority based on the network slice and the random access priority based on the MPS/MCS are configured in cells of different versions (for example, the random access priority of the MPS/MCS is configured in cells of the R16 version of the third generation partnership project (3rd generation partnership project,3GPP), and the random access priority of the network slice is configured in cells of the R17 version of the 3 gpp), so that when the network device configures the random access priorities, the random access priorities for the network slice and the MPS/MCS cannot be configured in cells of the same version. That is, the service including MPS/MCS characteristic initiated by the terminal device may be randomly accessed from the random access resource corresponding to any one of the random access channel partition #1, the random access channel partition #2, and the random access channel partition #3. In this case, the MPS/MCS characteristic may be regarded as a characteristic of the same level as the random access channel partition, and when the network device configures the random access priority with the random access channel partition as granularity, the random access priority may be configured for the MPS/MCS characteristic alone, see examples of table 7, table 13 and table 15.

The embodiment of the present application further provides a possible implementation manner, that is, as shown in fig. 4, when the network device configures the random access priority with the random access channel partition as granularity, the network device may group the features such as network slice, small data transmission, coverage enhancement, capability limitation, MPS/MCS, etc., and form feature sets after grouping, where each feature set corresponds to one random access channel partition. Alternatively, the features may not be grouped, that is, one or more features may correspond to one random access channel partition, that is, one random access channel partition may also correspond to only one feature, where a portion of the table examples that follow includes feature sets, and where the features are not grouped, that is, one or more features directly correspond to one random access channel partition, a portion of the table examples that follow may not include feature sets, which is not limited in this application. It should be understood that the feature set in this application may also be referred to as a feature set, and that the feature set may include 0,1, or a plurality of features, which is not limited in this application. When the feature set includes 0 features, the random access resource representing the random access channel partition corresponding to the feature set may be a common random access resource, and the random access resource may be used for random access of any service.

Illustratively, the features in the first correspondence are exemplified by a network slice group, and the first correspondence may be as shown in table 1:

TABLE 1

Cell unit
	Random access partition corresponding to slice
>Slice group identification
	>Random access channel partition identification

Table 1 includes a correspondence between a random access channel partition identifier and a network slice group identifier, and the terminal device may determine, according to the network slice group identifier, a random access channel partition corresponding to a specific network slice.

The second correspondence relation sent by the network device to the terminal device has the following two possible cell configuration forms:

first cell structure:

illustratively, the first layer of the cell structure comprising the second correspondence is characterized by a random access channel partition identity. The general definition of this cell can be as shown in table 2:

TABLE 2

Cell unit
	Special feature random access priority
>Random access channel partition identification
	>Random access priority
>>High priority power boost step size
	>>Scaling factor BI

In table 2, the random access priority of the specific feature is associated with the random access channel partition identifier, and the terminal device may determine the random access channel partition identifier corresponding to the specific feature according to the first correspondence, and determine the random access priority corresponding to the specific feature by combining the correspondence between the random access channel partition identifier and the random access priority in table 2.

The second cell structure:

illustratively, the first layer of the cell structure comprising the second correspondence is a random access channel partition identity and the second layer is a feature set.

Corresponding to the second cell structure, the method 300 optionally further comprises:

in step S311, the network device sends identification information to the terminal device, where the identification information indicates a characteristic applicable to the random access priority corresponding to the random access channel partition, and the terminal device receives the identification information.

Optionally, the identification information is added to the cells of the same layer or the next layer of the feature names, so as to indicate which features in the feature set the random access priority in the current random access channel partition identification is applicable to.

For example, the identification information may be 1-bit information, such as a flag (flag), or an indicator, which is added in the cell of the same layer or the cell of the next layer of the feature name, where the 1-bit information indicates that the random access priority in the current random access channel partition identifier is applicable to the feature corresponding to the feature name when the 1-bit information is indicated as 1, or the identification information may also be indicated in other manners, which is not limited in the application.

For example, the random access priority corresponding to the random access channel partition #1 is random access priority #1, and the feature set corresponding to the random access channel partition #1 includes a network slice group #1 and a small data transmission #1. Wherein the identification information of the cells at the same level as the network slice group #1 (feature name) is set as true, and the identification information of the cells at the same level as the small data transmission group #1 (feature name) is set as false or default. Or the same layer or next layer cell in the network slice group #1 includes identification information, and the same layer or next layer cell in the small data transmission group #1 does not include identification information. It indicates that the random access priority corresponding to the network slice group #1 is the random access priority #1, the random access priority corresponding to the small data transmission #1 is not the random access priority #1, in other words, the characteristic that the random access priority #1 is applicable is the network slice group #1, and the characteristic that the random access priority #1 is not applicable is the small data transmission #1.

Illustratively, the general definition of the cell structure including the second correspondence may be as shown in Table 3:

TABLE 3 Table 3

Cell unit
	Random access channel partition identification
>Feature set
	>>Feature names
>>Identification information (Flag)
	>Random access priority
>>High priority power boost step size
	>>Scaling factor BI

In table 3, the first layer of the cell structure is a random access channel partition identifier, the second layer is a feature set and a random access priority, the third layer is a feature name and identifier information, that is, the random access priority corresponding to the random access channel partition identifier of the first layer is given in the second layer, the feature to which the random access priority given in the second layer is applicable is represented in the identifier information of the third layer, and if the identifier information corresponding to a specific feature in the third layer is set to true, or the same layer or the next layer of the specific feature includes identifier information, the random access priority corresponding to the specific feature is the random access priority given in the second layer. If the identification information corresponding to a certain feature in the third layer is set as false or default, or the same layer or the next layer of the specific feature does not comprise the identification information, the feature is indicated not to be applicable to the random access priority given by the second layer.

It should be understood that, in the above steps S310' and S311, the network device broadcasts the random access priority with the random access channel partition as granularity, and compared to the scheme in which the network device configures the random access priority with the granularity as characteristic in step S310, the broadcasted signaling overhead is small.

In step S320, the network device sends first indication information to the terminal device, where the first indication information indicates ordering of the first random access priority and/or the second random access priority, and the terminal device receives the first indication information correspondingly.

The network device sends first indication information to the terminal device, the first indication information indicating a ranking of at least two random access priorities, including a ranking of a first random access priority and/or a second random access priority.

Or the network equipment sends first indication information to the terminal equipment, wherein the first indication information indicates that the terminal equipment uses the special random access priority to carry out random access when the service corresponds to at least two characteristics.

For example, the first indication information indicates that the terminal device uses a dedicated random access priority for random access when a service (a certain service initiated by the terminal device) corresponds to at least two features. The dedicated random access priority is set by the network device, and is used for a scenario that the service initiated by the terminal device corresponds to at least two features, where the dedicated random access priority may be different from the random access priority configured by the network device for any one feature. For example, a broadcast message of the network device may be received before the terminal device random access, the broadcast message including the dedicated random access priority. The network device may pre-configure a dedicated random access priority in a multi-feature scenario (a scenario in which one service corresponds to at least two features) according to a network side resource situation or an operator policy, and it should be understood that the network device may adaptively modify the dedicated random access priority in combination with capability information of the terminal device, for example, the terminal device resides in the network device, and the network device stores the capability information of the terminal device.

If the first indication information indicates the ordering of at least two random access priorities, including the ordering of the first random access priority and/or the second random access priority, the broadcasting of the first indication information may be performed by:

mode #1

For example, corresponding to the scheme (corresponding to the first cell structure mentioned above) of setting random access priority with random access channel partition as granularity, the cells (ranks) of the first indication information are added on the basis of the above table 2, and the positions of the cells may be as shown in table 4, which is not limited in this application.

TABLE 4 Table 4

Cell unit
	Special feature random access priority
>Random access channel partition identification
	>Random access priority
>>High priority power boost step size
	>>Scaling factor BI
Ordering of

For example, corresponding to the scheme (corresponding to the second cell structure mentioned above) of setting random access priority with random access channel partition as granularity, adding cells (ranks) of the first indication information on the basis of the above table 3, the positions of the cells may be as shown in table 5, which is not limited in this application.

TABLE 5

It should be understood that the cells in the ranks in tables 4 and 5 may be assigned, where the before and after ranks may be determined according to the size of the assigned value, and the random access priority with the front rank may be preferentially used in the random access process, for example, the random access priority corresponding to the first service includes the random access priority #1 and the random access priority #2, where the rank of the random access priority #1 is 3, and the rank of the random access priority #2 is 2, where the terminal device preferentially selects the random access priority #2 in the random access process, where, in the process of selecting, the smaller the rank value, the more the front rank indicates that the terminal device preferentially selects when selecting, and of course, the larger the rank value indicates that the more the front rank indicates that the terminal device preferentially selects when selecting, which is not limited in the application.

The ordering in table 4 is associated with a first level cell specific characteristic random access priority, and if the same characteristic corresponds to a different random access channel partition, the ordering of the random access priorities of the different random access channel partitions is the same. For example, network slice group #1 corresponds to random access channel partition #1 and network slice group #2 corresponds to random access channel partition #2, but both network slice group #1 and network slice group #2 belong to network slice characteristics, so the ordering of random access priorities for random access channel partition #1 and random access channel partition #2 is the same.

The ordering in table 5 is associated with the first level cell random access channel partition identity and is effective for the feature in the random access channel partition that includes the identity information (or the identity information is set to true). For example, the characteristics corresponding to the random access channel partition #1 include a network slice group #1, a small data transmission #1, and the network slice group #1 and the small data transmission #1 each include identification information (or the identification information of the network slice group #1 and the small data transmission #1 are both set to true), the random access priority corresponding to the random access channel partition #1 is a random access priority #1, and the rank of the random access priority #1 is 3, that is, the random access priority corresponding to the network slice group #1 and the small data transmission #1 is the random access priority #1, and the rank of the random access priority #1 is 3. The cell structure illustrated in table 5 may save signaling overhead when the random access channel partition corresponds to at least two features, compared to the cell structure (configured with the features as granularity) illustrated in table 4.

It will be appreciated that, in correspondence with the pattern #1, the first indication information is a cell newly added in the cell structure shown in table 2 or table 3, the cell being associated with the feature. Therefore, if no ranking is presented in the cell structure corresponding to a random access channel partition identifier, the ranking of the random access priority corresponding to the random access channel partition identifier may be defaulted to be lowest (table 5). Or if no ranking is presented in the cell structure corresponding to a certain feature, the ranking of the random access priority corresponding to the feature may be defaulted to be lowest (table 4).

Mode #2

The new table in the common parameter (e.g. BWP-uplink common, which is not limited in this application) indicates the ranking of the random access priorities corresponding to the different features, and the first cell configuration corresponding to the second correspondence, as shown in table 6, may indicate the ranking of the random access priorities corresponding to the different features.

TABLE 6

The ranking of the random access priorities corresponding to the partial features is shown in table 6, and the features of the embodiments of the present application are not limited thereto, and P1, P2, P3, and P4 may take different values, for example, p1=3, p2=4, p3=2, and p4=1, that is, the ranking of the random access priorities corresponding to the capability limitation is the most forward, and the random access priority corresponding to the capability limitation is preferentially selected when the terminal device accesses randomly.

The newly added table in the common parameter (e.g., BWP-uplink common, which is not limited in this application) indicates the ranking of the random access priorities corresponding to the different random access channel partitions, and the second cell configuration corresponding to the second correspondence, as shown in table 7, may indicate the ranking of the random access priorities corresponding to the different random access channel partitions.

TABLE 7

	RACH partition #1	RACH partition #2	RACH partition #3	MPS/MCS
					Ordering of	P1	P2	P3	P4

The ordering of the random access priorities corresponding to the different random access channel partitions is shown in table 7, where P1, P2, P3, P4 may take different values, for example p1=3, p2=4, p3=2, p4=1, i.e. if the characteristics corresponding to the service initiated by the terminal device belong to the random access channel partition #2 and the random access channel partition #3, respectively, then the random access priority corresponding to the random access channel partition #3 is selected for random access.

It should be understood that, regarding the MPS/MCS characteristic as the same-level characteristic example as the random access channel partition in table 7, in the case that the service including the MPS/MCS characteristic initiated by the terminal device may perform random access from the random access resource corresponding to any one of the random access channel partition #1, the random access channel partition #2, and the random access channel partition #3, when the network device configures the random access priority with the random access channel partition as granularity, the network device may separately configure the random access priority for the MPS/MCS characteristic, and thus may separately configure the ranking of the random access priority for the MPS/MCS characteristic.

Mode #3

The new table in the common parameter (e.g. BWP-uplink common, which is not limited in this application) indicates the ordering of the parameters of the random access priority corresponding to the different features (including the high priority power boost step size and the scaling factor BI), and the first cell configuration corresponding to the second correspondence, as shown in table 8, may indicate the ordering of the parameters of the random access priority corresponding to the different features.

TABLE 8

The new table in the common parameter (e.g. BWP-uplink common, which is not limited in this application) indicates the ordering of the parameters of the random access priority (including the high priority power boost step size and the scaling factor BI) corresponding to the different features, and the second cell configuration form corresponding to the second correspondence, as shown in table 9, may indicate the ordering of the parameters of the random access priority corresponding to the different random access channel partitions.

TABLE 9

It should be understood that the ranks of the different random access priority parameters shown in table 8 and table 9 are independent, i.e. when the terminal device selects the random access priority parameter, the higher priority power step size in the front of the rank and the scaling factor BI in the front of the rank may be selected respectively, and the lower the value of the rank, the higher the priority the terminal device. For example, if the value of P3 in the high priority power boost step size in table 9 is minimum and the value of Q1 in the scaling factor BI is minimum, the terminal device selects the high priority power boost step size corresponding to the random access channel partition #3 and the scaling factor BI corresponding to the random access channel partition #1 when selecting the random access priority parameter. The high priority power boost step size and the scaling factor BI in mode 3 may be selected separately, which is more flexible than mode 2, which saves signaling overhead compared to mode 3.

In step S330, the terminal device determines a random access priority corresponding to a first feature and a second random access priority corresponding to a second feature, where the first feature and the second feature are features corresponding to a service.

For example, corresponding to the step S310, the terminal device determines, through random access priorities corresponding to at least two features sent by the network device, a first random access priority corresponding to the first feature and a second random access priority corresponding to the second feature, and for a specific determination process, reference may be made to mode 1 in step S210.

Alternatively, corresponding to the above step S310', the terminal device may determine the first random access priority corresponding to the first feature and the second random access priority corresponding to the second feature with reference to the first correspondence and the second correspondence.

The characteristics corresponding to the service initiated by the terminal device include a first characteristic and a second characteristic, where the first characteristic is a network slice #1, the second characteristic is a small data transmission #2, a random access channel partition corresponding to the network slice #1 is determined to be a random access channel partition #1 by referring to the first correspondence, a random access channel partition corresponding to the small data transmission #2 is determined to be a random access channel partition #2, a random access priority corresponding to the random access channel partition #1 is determined to be a random access priority #1 by referring to the second correspondence (a first cell structure of the second correspondence), and a random access priority corresponding to the random access channel partition #2 is determined to be a random access priority #2. It is determined that the random access priority corresponding to the service includes random access priority #1 and random access priority #2.

It should be understood that, when the second correspondence is the second cell structure, the terminal device needs to determine the first random access priority corresponding to the first feature and the second random access priority corresponding to the second feature in combination with the identification information. That is, corresponding to the above steps S310' and S311, the terminal device may refer to the first correspondence, the second correspondence, and the identification information to determine the first random access priority corresponding to the first feature and the second random access priority corresponding to the second feature.

For example, the first characteristic is a network slice #1, the second characteristic is a small data transmission #2, the random access channel partition corresponding to the network slice #1 is determined to be the random access channel partition #1 by referring to the first correspondence, the random access channel partition corresponding to the small data transmission #2 is determined to be the random access channel partition #2, the characteristic that the random access priority #1 corresponding to the random access channel partition #1 is determined to be applicable by referring to the second correspondence and the identification information is determined to be the network slice #1, and the characteristic that the random access priority #2 corresponding to the random access channel partition #2 is determined to be the small data transmission #2. It is determined that the random access priority corresponding to the first service includes random access priority #1 and random access priority #2.

It should be understood that step S310 is one scheme indicating the random access priorities of at least two features, and that step S310' and step S311 are another parallel scheme indicating the random access priorities of at least two features.

Alternatively, the information in step S310' and step S311 may be carried in the same broadcast message.

Alternatively, the information in step S310' and step S311 may be carried in the messages sent by other network devices to the terminal device separately or simultaneously, which is not limited in the present application.

It should be further understood that, in the foregoing steps S310 and S320, a scheme of the network device issuing the random access priorities corresponding to at least two features and the ranks of different random access priorities is given, in the steps S310', and in the steps S311 and S320, the network device issues another scheme of the random access priorities corresponding to at least two features and the ranks of different random access priorities.

Alternatively, the information in step S310 and step S320 may be carried in the same broadcast message (or other message sent by the network device to the terminal device).

Or step S310', the information in steps S311 and S320 may be carried in the same broadcast message (or other message sent by the network device to the terminal device).

In step S340, the terminal device refers to the first indication information to determine a random access priority used by the terminal device for random access.

For example, the terminal device determines the ranks of the first random access priority and the second random access priority with reference to the first indication information, and determines the random access priority with the highest rank as the random access priority used for the subsequent random access.

Or, for example, the service initiated by the terminal device corresponds to 3 features, including a network slice group #1, a small data transmission #2, and mps, where the random access priority corresponding to the network slice group #1 is a random access priority #1, the random access priority corresponding to the small data transmission #2 is a random access priority #2, the random access priority corresponding to the mps is a random access priority #3, and if the first indication information indicates that the rank of the random access priority #2 > the rank of the random access priority #3 > the rank of the random access priority #1, the terminal device determines the random access priority #2 as the random access priority used for performing random access.

It should be understood that, when the service initiated by the terminal device corresponds to more features, the method for determining the random access priority used for the random access by the terminal device with reference to the first indication information is similar to the above description, and will not be repeated herein.

Optionally, the method 300 further comprises:

in step S350, in the case that the terminal device fails to use the random access priority for the first time, the terminal device determines the random access priority used for random access again.

Alternatively, the terminal device may determine the random access priority used for the second random access with reference to the first indication information.

For example, assuming that the first indication information indicates that the rank of the random access priority #2 > the rank of the random access priority #3 > the rank of the random access priority #1, the terminal device determines the random access priority #2 as the random access priority used by the first random access, and in the case that the terminal device fails to use the random access priority, the terminal device determines the random access priority #3 as the random access priority used by the second random access, and if the second random access fails, the terminal device can select the random access priority to perform random access again by referring to the first indication information until the random access is successful.

It should be understood that the terminal device does not successfully access the network within a predetermined number of attempts or time, i.e. is a random access failure, the number of attempts or the predetermined time may be preconfigured.

In the method 300, the network device solves the problem of how to select the random access priority to perform random access when the network device issues the random access priority corresponding to different features and the service initiated by the terminal device corresponds to at least two features by adding the first indication information in the broadcast message. The method 300 not only can realize the centralized management of the network equipment on the terminal equipment behaviors, but also can reduce the complexity of the terminal equipment implementation.

Fig. 5 is a flowchart of another method for determining random access priority according to an embodiment of the present application. The method 500 shown in fig. 5 is a scheme for a network device to simply instruct (as compared to the method 300) a terminal device to determine a random access priority to use for random access from a plurality of random access priorities, and includes:

step S510, step S310, refer to the description of step S310, which is not repeated here.

Step S510', step S310', see the description of step S310', and will not be repeated here.

Step S511, step S311, refer to the description of S311, which is not repeated here.

In step S520, the network device sends second indication information to the terminal device, where the second indication information indicates that the terminal device uses the random access priority corresponding to the first feature, and the terminal device receives the second indication information.

Optionally, the network device adds the second indication information in a broadcast message (e.g., SIB 1).

Optionally, the network device adds the second indication information in an on demand SI message.

It should be understood that in this manner, the terminal device may request the network device for the second indication information, which the network device broadcasts to the requesting terminal devices, which may be 1, 2, or more.

Optionally, the network device sends RRC signaling to the terminal device, where the RRC signaling includes the second indication information.

It should be understood that, in addition to the broadcasting manner described above, the network device may also send the second indication information to the terminal device in other manners, which is not limited in this application.

The network device is used for newly adding a second indication information example in the broadcast message, wherein the second indication information can be broadcast by the following modes:

mode #1

Corresponding to the scheme of setting random access priority with random access channel partition as granularity, and corresponding to the first cell setting form of the second correspondence, the location of the second indication information in the cell may be as shown in table 10:

table 10

Cell unit
	Special feature random access priority
>Random access channel partition identification
	>Random access priority
>>High priority power boost step size
	>>Scaling factor BI
Second indication information

Assuming that the feature corresponding to the second indication information in the table 10 is a network slice, and the value of the second indication information is true (or the cell corresponding to the network slice includes the second indication information, or the second indication information is 1 bit of information, where the 1 bit of information is represented as 1), the terminal device selects the random access priority corresponding to the network slice (the first feature), that is, when the feature corresponding to the service initiated by the terminal device includes the network slice and the small data transmission, random access is performed by using the random access priority corresponding to the network slice.

It should be understood that, if the cell structure of a certain feature does not include the second indication information, in the case that the service initiated by the terminal device corresponds to more than two features, the random access priority corresponding to the feature is not selected. Or if the first feature indicated by the second indication information does not belong to the feature corresponding to the service initiated by the terminal equipment, the terminal equipment does not use the random access priority corresponding to the first feature to perform random access. For example, the second indication information indicates that the terminal device uses the random access priority corresponding to the small data transmission, but the feature corresponding to the service initiated by the terminal device does not include the small data transmission, and at this time, the terminal device does not select the random access priority corresponding to the small data transmission to perform random access.

Optionally, the network device adds second indication information in the broadcast message (for example, SIB 1), which corresponds to a scheme of setting random access priority with the random access channel partition as granularity, and corresponds to a second cell setting form of the second correspondence, and a location of the second indication information in the cell may be as shown in table 11:

TABLE 11

Assuming that the random access channel partition corresponding to the second indication information in table 11 is the random access channel partition #1, and the value of the second indication information is true, when the terminal device selects the random access priority corresponding to the random access channel partition #1 (the first feature is the feature that the identification information is true in the random access channel partition #1, or the first feature is the feature that the identification information is included in the random access channel partition # 1), that is, when the feature corresponding to the service initiated by the terminal device includes a network slice (corresponding to the random access channel partition #1, the identification information of the network slice is set to true, or the network slice includes identification information) and small data transmission (corresponding to the random access channel partition # 2), the random access is performed by using the random access priority corresponding to the random access channel partition # 1.

Mode #2

A table representing the second indication information is newly added to the common parameter (for example, BWP-uplink common, which is not limited in this application), and corresponds to the first cell configuration form of the second correspondence, and the table representing the second indication information is shown in, for example, table 12:

Table 12

	Network slice	MPS/MCS	Small data transmission	Limited capacity
					Second indication information	-	-	true	-

As shown in table 12, when the characteristics corresponding to the service initiated by the terminal device include small data transmission, the random access priority corresponding to the small data transmission may be selected for random access. "-" means false or default, and "-" appearing in the tables hereinafter is understood as well.

A table representing the second indication information is newly added to the common parameter (for example, BWP-uplink common, which is not limited in this application), and the table representing the second indication information is shown in table 13, for example, in the second cell configuration form corresponding to the second correspondence relationship:

TABLE 13

	RACH partition #1	RACH partition #2	RACH partition #3	MPS/MCS
					Second indication information	-	true	-	-

As shown in table 13, when one of the features corresponding to the service initiated by the terminal device belongs to the random access channel partition #2, the terminal device selects the random access priority corresponding to the random access channel partition #2 for random access.

It should be understood that, regarding the MPS/MCS characteristic as the characteristic example of the same level as the random access channel partition in table 13, in the case that the service including the MPS/MCS characteristic initiated by the terminal device may be randomly accessed from the random access resource corresponding to any one of the random access channel partition #1, the random access channel partition #2, and the random access channel partition #3, when the network device configures the random access priority with the random access channel partition as granularity, the network device may separately configure the random access priority for the MPS/MCS characteristic, and thus separately consider the MPS/MCS when configuring the second indication information.

Mode #3

A table representing the second indication information is newly added to the common parameter (for example, BWP-uplink common, which is not limited in this application), and corresponds to the first cell configuration form of the second correspondence, and the table representing the second indication information is shown in table 14, for example:

TABLE 14

As shown in table 14, when the characteristics corresponding to the service initiated by the terminal device include MPS and network slices, the terminal device selects a high-priority power lifting step corresponding to MPS and a scaling factor BI corresponding to network slices for random access. When the features corresponding to the service initiated by the terminal equipment comprise the MPS and the small data transmission, the terminal equipment selects the high-priority power lifting step length corresponding to the MPS, and the scaling factor BI cannot be selected only by referring to the second indication information.

A table representing the second indication information is newly added to the common parameter (for example, BWP-uplink common, which is not limited in this application), and the table representing the second indication information is shown in, for example, table 15:

TABLE 15

As shown in table 15, when the characteristics corresponding to the service initiated by the terminal device include a network slice #1 and a small data transmission #2, the network slice #1 belongs to a random access channel partition #1, and the small data transmission #2 belongs to a random access channel partition #2, the terminal device selects a high priority power lifting step size corresponding to the random access channel partition #2, and a scaling factor BI corresponding to the random access channel partition #1 for random access.

It should be understood that step S510 is one scheme indicating the random access priorities of at least two features, and that step S510' and step S511 are another parallel scheme indicating the random access priorities of at least two features.

Alternatively, the information in step S510' and step S511 may be carried in the same broadcast message.

It should be further understood that, in the foregoing steps S510 and S520, the network device issues one scheme of the random access priority and the second indication information corresponding to the at least two features, and in the steps S510', the steps S511 and S520 are another scheme of the network device issues the random access priority and the second indication information corresponding to the at least two features.

Alternatively, the information in step S510 and step S520 may be carried in the same broadcast message (or other message sent by the network device to the terminal device).

Or step S510', the information in steps S511 and S520 may be carried in the same broadcast message (or other message sent by the network device to the terminal device).

Step S530, step S330, refer to the description of S330, which is not repeated here.

In step S540, the terminal device refers to the second indication information to determine the random access priority used by the terminal device for random access.

For example, the terminal device determines, with reference to the second indication information, a random access priority corresponding to the first feature, that is, determines the random access priority corresponding to the first feature as a random access priority used by the terminal device for random access.

Or, for example, the service initiated by the terminal device corresponds to 3 features, including a network slice group #1, a small data transmission #2, and an mps, where the random access priority corresponding to the network slice group #1 is a random access priority #1, the random access priority corresponding to the small data transmission #2 is a random access priority #2, the random access priority corresponding to the mps is a random access priority #3, and if the second indication information indicates that the terminal device uses the random access priority corresponding to the network slice, the terminal device determines the random access priority #1 as the random access priority used for random access.

Optionally, the terminal device refers to the second indication information, and the first information determines a random access priority used for random access, where the first information includes at least one of the following: time delay requirement information of service or capability information of the terminal equipment.

For example, when the terminal device determines that the random access priority for random access cannot be determined by referring to the second indication information, the random access priority for random access needs to be determined by combining the first information, and it is assumed that the second indication information indicates that the terminal device uses the random access priority corresponding to the small data transmission, but the feature corresponding to the service initiated by the terminal device does not include the small data transmission, and at this time, the random access priority for random access needs to be determined by combining the first information. In particular how the terminal device determines the random access priority for use in random access with reference to the first information may be referred to step S630 of the method 600.

Optionally, the method 500 further comprises:

in step S550, in the case that the terminal device fails to use the random access priority for the first time, the terminal device determines the random access priority to use the random access again.

For example, assuming that the second indication information indicates the random access priority corresponding to the small data transmission used by the terminal device, in the case that the random access fails within a predetermined number of attempts or time by using the random access priority by the terminal device, the terminal device determines the random access priority used by the second random access by referring to the first information, and if the second random access fails, the random access priority can be selected by referring to the first information again for random access until the random access is successful.

In the method 500, the terminal device can select a random access priority for random access based on simple indication information issued by the network device, where the service initiated by the terminal device corresponds to at least two features. The method is a compromise, compared to the method 300, the broadcast signaling overhead of the network device is saved, and the implementation of the terminal device has a certain degree of flexibility.

Fig. 6 is a flowchart of another method for determining random access priority according to an embodiment of the present application. The method 600 shown in fig. 6 is a scheme in which a terminal device can determine random access priority levels for random access from at least two random access priority levels independently of an indication of a network device, and includes:

step S610, steps S310 and S510 are described with reference to S310, and are not repeated here.

Step S610', steps S310' and S510', see the description of step S310', and are not repeated here.

Step S611, steps S311 and S511, refer to the description of S311, and are not repeated here.

It should be understood that step S610 is one scheme indicating the random access priorities of at least two features, and that step S610' and step S611 are another parallel scheme indicating the random access priorities of at least two features.

Alternatively, the information in step S610' and step S611 may be carried in the same broadcast message.

Step S620, steps S320 and S520 are described with reference to S320, and are not repeated here.

Step S630, the terminal device determines a random access priority for random access with reference to first information, where the first information includes at least one of the following: time delay requirement information of service or capability information of the terminal equipment.

Optionally, the terminal device determines the ranking of the random access priorities with reference to the first information, and further determines the random access priority with the highest ranking as the random access priority used for random access.

It should be understood that the terminal device determines the rank of the random access priority with reference to the first information, and may determine the rank of the random access priority with reference to the first information, or may determine the rank of the random access priority with reference to the first information and other information (may be the first indication information, the second indication information, or information other than the first indication information and the second indication information). The above-mentioned terminal device determines the ordering of the random access priorities with reference to the first indication information or the second indication information is equally understood, and the present application does not limit this.

For example, the features corresponding to the service initiated by the terminal device include a network slice #2, a mission critical service, and a capability limited #3, and the terminal device determines the random access priority corresponding to the network slice #2, the mission critical service, and the capability limited #3 according to the broadcast message, where the value of the random access priority parameter corresponding to each feature is shown in table 16.

Table 16

For example, the terminal device considers the delay requirement information of the initiated service, and preferentially meets the service requirement with low delay, that is, the scaling factor BI of the random access priority parameter preferentially selects a smaller value, in table 16, the scaling factor BI preferentially selects 0, and then sequentially 0.25 and 0.75, that is, the random access priority corresponding to the network slice #2, the random access priority corresponding to the MCS, and the random access priority corresponding to the capability limitation #3 are sequentially from front to back according to the sequence of the delay requirement information random access priority.

When considering the capability information of the terminal device, assuming that the difference between the maximum uplink transmission power and the initial uplink transmission power of the terminal device is 10dB, the value of the high priority power lifting step should be less than half of 10dB (i.e. 5 dB), as shown in table 16, although the network slice #2 has the highest requirement for low delay, the required high priority power lifting step is 6dB greater than 5dB, so that the random access priority corresponding to MCS is selected to perform random access in combination with the delay requirement information and the capability information of the terminal device.

It should be understood that the above-mentioned manner of determining the random access priority used for random access is merely an example, and the terminal device may also determine the random access priority used for random access subsequently with reference to the average value of the random access priority parameters of at least two features corresponding to the service, or the terminal device may also determine the random access priority used for random access subsequently with reference to other manners, which is not limited in this application.

The rule of determining the random access priority used for random access from the random access priority by the terminal device with reference to the first information may be implemented by the terminal device (the self implementation may be a selection policy of the terminal device and determined by the terminal manufacturer), or may be preconfigured information of the terminal device (all terminal devices, i.e. the terminal devices from different manufacturers preconfigured the same selection policy with reference to a standard protocol).

Optionally, the method 600 further comprises:

in step S640, in the case that the terminal device fails to use the random access priority for the first time, the terminal device determines the random access priority used for random access again.

For example, in case that the random access priority determined by the terminal device with reference to the first information fails in a predetermined number of attempts or in a predetermined time, the terminal device may determine the random access priority used by the second random access with reference to the first information, and the determination process is similar to the process that the terminal device determines the random access priority used by the first random access with reference to the first information, which is not described herein. If the second random access fails, the random access priority is selected by referring to the first information to perform random access again until the random access is successful.

In the method 600, the terminal device can select the random access priority for random access with reference to a predetermined rule based on the random access priorities corresponding to the at least two features issued by the network device, and in the case that the service initiated by the terminal device corresponds to the at least two features. The method 600 saves signaling overhead and is more flexible in terminal device implementation than the methods 300 and 500.

It should be understood that the cell structures in the foregoing tables 1-16 are merely examples, and the present application is not limited thereto, and other cell structures capable of achieving the functions of the cell structures illustrated in the foregoing tables are also within the scope of the present application. The dashed steps shown in the flowcharts 3-6 are optional steps, and the sequence of the steps is determined according to the internal logic of the method, and the sequence numbers shown in fig. 3-6 are only examples, and do not limit the sequence of the steps in the present application.

It should also be understood that the methods provided in the embodiments of the present application may be used alone or in combination, and are not limited in this regard.

It should be understood that the term "and/or" in this application is merely an association relationship describing the associated object, and indicates that three relationships may exist, for example, a and/or B may indicate: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. In addition, the character "/" herein generally indicates that the associated object is an "or" relationship, but may also indicate an "and/or" relationship, and may be understood by referring to the context.

In the present application, "at least one item(s)" means one item(s) or a plurality of items(s), "at least two items(s)" and "a plurality of items(s)" mean two items(s) or more than two items(s). "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

It should be noted that the execution bodies illustrated in fig. 3-6 are only examples, and the execution bodies may also be chips, chip systems, or processors that support the execution bodies to implement the methods illustrated in fig. 3-6, which are not limited in this application.

Method embodiments of the present application are described above with reference to the accompanying drawings, and device embodiments of the present application are described below. It will be appreciated that the description of the method embodiments and the description of the apparatus embodiments may correspond to each other and that accordingly, non-described parts may be referred to the previous method embodiments.

It should be understood that, in the foregoing embodiments of the methods and operations implemented by the terminal device, the methods and operations implemented by the network device may also be implemented by a component (e.g., a chip or a circuit) that may be used in the terminal device, or the methods and operations implemented by the network device may also be implemented by a component (e.g., a chip or a circuit) that may be used in the network device.

The above description has been presented mainly from the point of interaction between the network elements. It will be appreciated that each network element, e.g. the transmitting device or the receiving device, in order to implement the above-mentioned functions, comprises corresponding hardware structures and/or software modules for performing each function. Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application may divide the function modules of the transmitting end device or the receiving end device according to the above method example, for example, each function module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation. The following description will take an example of dividing each functional module into corresponding functions.

Fig. 7 is a schematic block diagram of a communication device provided in an embodiment of the present application. The communication device 700 shown in fig. 7 includes a transceiving unit 710 and a processing unit 720. The transceiver unit 710 may communicate with the outside, and the processing unit 720 is used for data processing. The transceiver unit 710 may also be referred to as a communication interface or a communication unit.

Optionally, the communication device 700 may further include a storage unit, where the storage unit may be used to store instructions and/or data, and the processing unit 720 may read the instructions and/or data in the storage unit.

In one design, the communications apparatus 700 may be used to perform the actions performed by the terminal devices in the above method embodiments (methods 200, 300, or 500).

Alternatively, the communication apparatus 700 may be a terminal device, where the transceiver unit 710 is configured to perform an operation of receiving or transmitting the terminal device in the above method embodiment, and the processing unit 720 is configured to perform an operation of processing inside the terminal device in the above method embodiment.

Alternatively, the communication apparatus 700 may be a device including a terminal device. Alternatively, the communication apparatus 700 may be a component configured in a terminal device, for example, a chip in the terminal device. In this case, the transceiver unit 710 may be an interface circuit, a pin, or the like. In particular, the interface circuit may include an input circuit and an output circuit, and the processing unit 720 may include a processing circuit.

In a possible implementation manner, the processing unit 720 is configured to determine a first random access priority corresponding to a first feature and a second random access priority corresponding to a second feature, where the first feature and the second feature are features corresponding to a service, and determine a random access priority used by the terminal device for random access by referring to the ranks of the first random access priority and the second random access priority.

In a possible implementation manner, the first feature or the second feature includes any one of the following: network slicing, small data transmission, coverage enhancement, limited capacity, multimedia priority traffic, or mission critical traffic.

In a possible implementation, the transceiver unit 710 is configured to receive first indication information from a network device, where the first indication information indicates the ordering of the first random access priority and/or the second random access priority.

In a possible implementation, the ordering of the first random access priority and/or the second random access priority is determined based on first information comprising at least one of: delay requirement information of service or capability information of terminal equipment.

In a possible implementation manner, the transceiver unit 710 is configured to receive second indication information from the network device, where the second indication information indicates a random access priority corresponding to the first feature used by the terminal device, and the processing unit 720 is configured to determine a random access priority used by the terminal device for random access with reference to the second indication information.

In a possible implementation manner, the processing unit 720 is further configured to determine, with reference to the second indication information, a random access priority used by the terminal device for random access, and first information, where the first information includes at least one of the following: delay requirement information of service or capability information of terminal equipment.

In a possible implementation manner, in case that the terminal device fails to use the random access priority for the first time, the processing unit 720 is further configured to determine the random access priority used for the second time by referring to the ordering of the first random access priority and the second random access priority.

In a possible implementation manner, the transceiver unit 710 is further configured to receive a first correspondence and a second correspondence from the network device, where the first correspondence includes a correspondence between a random access channel partition and a feature, the second correspondence includes a correspondence between a random access channel partition and a random access priority, and the processing unit 720 is further configured to determine, with reference to the first correspondence, a first random access priority corresponding to the first feature and a second random access priority corresponding to the second feature by using the second correspondence.

In a possible implementation manner, the transceiver unit 710 is further configured to receive identification information from the network device, where the identification information indicates a feature to which the random access priority corresponding to the random access channel partition is applicable, and the processing unit 720 is further configured to refer to the first correspondence, the second correspondence, and the identification information to determine a first random access priority corresponding to the first feature and/or a second random access priority corresponding to the second feature.

In another design, the communications apparatus 700 shown in fig. 7 may be used to perform the actions performed by the network device in the above method embodiments (methods 300, or 500).

Alternatively, the communication apparatus 700 may be a network device, the transceiver unit 710 is configured to perform operations of receiving or transmitting the network device in the above method embodiment, and the processing unit 720 is configured to perform operations of processing internal to the network device in the above method embodiment.

Alternatively, the communication apparatus 700 may be a device including a network device. Alternatively, the communication apparatus 700 may be a component configured in a network device, for example, a chip in the network device. In this case, the transceiver unit 710 may be an interface circuit, a pin, or the like. In particular, the interface circuit may include an input circuit and an output circuit, and the processing unit 720 may include a processing circuit.

In a possible implementation manner, the transceiver unit 710 is configured to send a first correspondence and a second correspondence to the terminal device, where the first correspondence includes a correspondence between the random access channel partition and a feature, the second correspondence includes a correspondence between a random access channel partition and a random access priority, the first correspondence and the second correspondence are used to determine a first random access priority corresponding to the first feature and/or a second random access priority corresponding to the second feature, the first feature and the second feature are features corresponding to a service, and the transceiver unit 710 is further configured to send first indication information to the terminal device, where the first indication information indicates ordering of the first random access priority and/or the second random access priority.

In a possible implementation manner, the transceiver unit 710 is configured to send a first correspondence and a second correspondence to the terminal device, where the first correspondence includes a correspondence between the random access channel partition and a feature, the second correspondence includes a correspondence between a random access channel partition and a random access priority, the first correspondence and the second correspondence are used to determine a first random access priority corresponding to the first feature and/or a second random access priority corresponding to the second feature, the first feature and the second feature are features corresponding to a service, and the transceiver unit 710 is further configured to send second indication information to the terminal device, where the second indication information indicates that the terminal device uses the random access priority corresponding to the first feature.

In a possible implementation manner, the transceiver unit 710 is further configured to send identification information to the terminal device, where the identification information indicates a feature to which the random access priority corresponding to the random access channel partition is applicable, and the identification information is used to determine a first random access priority corresponding to the first feature and/or a second random access priority corresponding to the second feature.

As shown in fig. 8, the embodiment of the application further provides a communication device 800. The communication device 800 comprises a processor 810, the processor 810 being coupled to a memory 820, the memory 820 being for storing computer programs or instructions or and/or data, the processor 810 being for executing the computer programs or instructions and/or data stored by the memory 820, such that the method in the above method embodiments is performed.

Optionally, the communication device 800 includes one or more processors 810.

Optionally, as shown in fig. 8, the communication device 800 may further include a memory 820.

Optionally, the communication device 800 may include one or more memories 820.

Alternatively, the memory 820 may be integrated with the processor 810 or provided separately.

Optionally, as shown in fig. 8, the communication device 800 may further comprise a transceiver 830 and/or a communication interface, where the transceiver 830 and/or the communication interface are used for receiving and/or transmitting signals. For example, the processor 810 is configured to control the transceiver 830 and/or the communication interface to receive and/or transmit signals.

As an aspect, the communication apparatus 800 is configured to implement the operations performed by the terminal device in the above method embodiment. For example, the processor 810 is configured to implement operations (e.g., operations of step S210, step S220, step S330, step S340, step S350, step S530, step S540, step S550, step S620, step S630, or step S640) performed internally by the terminal device in the above method embodiment, and the transceiver 830 is configured to implement operations (e.g., operations of step S310, step S310', step S311, step S320, step S510', step S511, step S520, step S610', or step S611) performed received or transmitted by the terminal device in the above method embodiment.

As an aspect, the communication apparatus 800 is configured to implement the operations performed by the network device in the above method embodiment. For example, the processor 810 is configured to implement the operations performed internally by the network device in the above method embodiment, and the transceiver 830 is configured to implement the operations of receiving or transmitting performed by the network device in the above method embodiment (e.g., the operations of step S310, step S310', step S311, step S320, step S510', step S511, step S520, step S610', or step S611).

The embodiment of the application also provides a communication device 900, where the communication device 900 may be a terminal device or a chip. The communication apparatus 900 may be used to perform the operations performed by the terminal device in the method embodiments (methods 200, 300, or 500) described above.

Fig. 9 shows a simplified schematic diagram of a terminal device when the communication device 900 is a terminal device. As shown in fig. 9, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of terminal apparatuses may not have an input/output device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor are shown in fig. 9, and in an actual end device product, one or more processors and one or more memories may be present. The memory may also be referred to as a storage medium or storage device, etc. The memory may be provided separately from the processor or may be integrated with the processor, which is not limited by the embodiments of the present application.

In the embodiment of the present application, the antenna and the radio frequency circuit with the transceiver function may be regarded as a transceiver unit of the terminal device, and the processor with the processing function may be regarded as a processing unit of the terminal device.

As shown in fig. 9, the terminal device includes a transceiving unit 910 and a processing unit 920. The transceiver unit 910 may also be referred to as a transceiver, a transceiver device, a transceiver circuit, or the like. The processing unit 920 may also be referred to as a processor, a processing board, a processing module, a processing device, etc.

Alternatively, the device for implementing the receiving function in the transceiver unit 910 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 910 may be regarded as a transmitting unit, i.e., the transceiver unit 910 includes a receiving unit and a transmitting unit. The receiving unit may also be referred to as a receiver, receiving means, receiving circuit, or the like. The transmitting unit may also sometimes be referred to as a transmitter, a transmitting device, a transmitting circuit, or the like.

For example, in one implementation, the processing unit 920 is configured to perform the processing actions on the terminal device side in fig. 2. For example, the processing unit 920 is configured to perform the processing steps in step S210, S220 in fig. 2.

As another example, in one implementation, the processing unit 920 is configured to perform the processing steps in steps S330, S340, or S350 in fig. 3; the transceiving unit 910 is configured to perform transceiving operations in steps S310, S310', S311, or S320 in fig. 3.

As another example, in one implementation, the processing unit 920 is configured to perform the processing steps in steps S530, S540, or S550 in fig. 5; the transceiving unit 910 is used to perform transceiving operations in steps S510, S510', S511, or S520 in fig. 5.

As another example, in one implementation, the processing unit 920 is configured to perform the processing steps in steps S620, S630, or S640 in fig. 6; the transceiving unit 910 is configured to perform transceiving operations in steps S610, S610', or S611 in fig. 6.

It should be understood that fig. 9 is only an example and not a limitation, and the above-described terminal device including the transceiving unit and the processing unit may not depend on the structure shown in fig. 9.

When the communication device 900 is a chip, the chip includes a transceiver unit and a processing unit. The receiving and transmitting unit can be an input and output circuit or a communication interface; the processing unit may be an integrated processor or microprocessor or an integrated circuit on the chip.

The embodiment of the application also provides a communication device 1000, where the communication device 1000 may be a network device or a chip. The communications apparatus 1000 can be configured to perform the operations performed by the network device in the method embodiments described above.

When the communication apparatus 1000 is a network device (e.g., a base station), fig. 10 shows a simplified network device configuration diagram. The network device includes a 1010 portion and a 1020 portion. The 1010 part comprises an antenna and a radio frequency circuit, wherein the antenna is mainly used for receiving and transmitting radio frequency signals, and the radio frequency circuit is mainly used for converting the radio frequency signals and baseband signals. The 1020 portion includes memory and processor, which are mainly used for baseband processing, control of network equipment, etc. Section 1010 may be generally referred to as a transceiver unit, transceiver circuitry, or transceiver, etc. Portion 1020 is typically a control center of the network device, and may be generally referred to as a processing unit, for controlling the network device to perform the processing operations on the network device side in the above-described method embodiment.

Alternatively, the device for implementing the receiving function in the 1010 part may be regarded as a receiving unit, and the device for implementing the transmitting function may be regarded as a transmitting unit, i.e. the 1010 part includes the receiving unit and the transmitting unit. The receiving unit may also be referred to as a receiver, or a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, or a transmitting circuit, etc.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the network device, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.

Portions 1020 may include one or more boards, each of which may include one or more processors and one or more memories. For ease of illustration, only one memory and processor is shown in fig. 10. The processor is used for reading and executing the program in the memory to realize the baseband processing function and control the network equipment. If there are multiple boards, the boards can be interconnected to enhance processing power. As an alternative implementation, it may also be that multiple boards share one or more processors, or that multiple boards share one or more memories.

For example, in one implementation, the transceiver unit of the 1010 part is configured to perform the steps related to the transceiving performed by the network device in the embodiment shown in fig. 3/5/6 (e.g., the operations of step S310, step S310', step S311, step S320, step S510', step S511, step S520, step S610', or step S611). 1020 are used in part to perform the steps associated with the processing performed by the network device in the embodiment shown in fig. 3/5/6.

It should be understood that fig. 10 is only an example and not a limitation, and the above-described network device including the transceiving unit and the processing unit may not depend on the structure shown in fig. 10.

When the communication device 1000 is a chip, the chip includes a transceiver unit and a processing unit. The receiving and transmitting unit can be an input and output circuit and a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit on the chip.

As shown in fig. 11, the embodiment of the application further provides a communication device 1100. The communication device 1100 includes logic 1110 and input/output interface 1120.

The logic circuit 1110 may be a processing circuit in the communication device 1100. Logic 1110 may be coupled to a memory unit and invoke instructions in the memory unit so that communications device 1100 can implement the methods and functions of embodiments of the present application. The input/output interface 1120 may be an input/output circuit in the communication device 1100, outputting information processed by the communication device 1100, or inputting data or signaling information to be processed into the communication device 1100 for processing.

As an aspect, the communication apparatus 1100 is configured to implement the operations performed by the terminal device in the above method embodiments.

For example, the logic 1110 is configured to implement operations related to processing performed by a terminal device in the above method embodiments, e.g., operations related to processing performed by a terminal device in the embodiments shown in fig. 3-6, and the input/output interface 1120 is configured to implement operations related to transmission and/or reception performed by a terminal device in the above method embodiments, e.g., operations related to transmission and/or reception performed by a terminal device in the embodiments shown in fig. 3-6. The operations performed by the logic circuit 1110 may be specifically referred to the above description of the processing unit 720, and the operations performed by the input/output interface 1120 may be referred to the above description of the transceiver unit 710, which is not repeated here.

Alternatively, the communications apparatus 1100 is configured to implement the operations performed by the network device in the various method embodiments above.

For example, the logic 1110 is configured to implement operations related to processing performed by a network device in the above method embodiments, e.g., operations related to processing performed by a network device in the embodiments shown in fig. 3-6, and the input/output interface 1120 is configured to implement operations related to transmission and/or reception performed by a network device in the above method embodiments, e.g., operations related to transmission and/or reception performed by a network device in the embodiments shown in fig. 3-6. The operations performed by the logic circuit 1110 may be specifically referred to the description of the processing unit 820, and the operations performed by the input/output interface 1120 may be referred to the description of the transceiver unit 810, which is not repeated here.

It should be understood that the communication means described above may be one or more chips. For example, the communication device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated chip (application specific integrated circuit, ASIC), a system on chip (SoC), a central processing unit (central processor unit, CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), a microcontroller (micro controller unit, MCU), a programmable controller (programmable logic device, PLD) or other integrated chip.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capability. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

According to the method provided by the embodiment of the present application, there is further provided a computer readable medium storing a program code, which when run on a computer, causes the computer to perform the method of the embodiment shown in fig. 3-6. For example, the computer program when executed by a computer, makes the computer implement the method performed by the network device or the method performed by the terminal device in the above-described method embodiment.

The embodiments of the present application also provide a computer program product containing instructions that, when executed by a computer, cause the computer to implement the method performed by the network device or the method performed by the terminal device in the above method embodiments.

Any explanation and beneficial effects of the related content in any of the communication devices provided above may refer to the corresponding method embodiments provided above, and are not described herein.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The network device in the foregoing respective apparatus embodiments, the terminal device corresponds to the network device in the method embodiments, and the corresponding steps are performed by corresponding modules or units, for example, the steps of receiving or transmitting in the method embodiments are performed by the communication unit (transceiver), and other steps except for transmitting and receiving may be performed by the processing unit (processor). Reference may be made to corresponding method embodiments for the function of a specific unit. Wherein the processor may be one or more.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers. Furthermore, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with one another in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of random access, comprising:

the terminal equipment determines a first random access priority corresponding to a first feature and a second random access priority corresponding to a second feature, wherein the first feature and the second feature are features corresponding to a service;

the terminal equipment refers to the first random access priority and the second random access priority to determine the random access priority used by the terminal equipment for random access.

2. The method of claim 1, wherein the first feature or the second feature comprises any one of:

network slicing, small data transmission, coverage enhancement, limited capacity, multimedia priority traffic, or mission critical traffic.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

The terminal device receives first indication information from a network device, wherein the first indication information indicates the ordering of the first random access priority and/or the second random access priority.

4. The method according to claim 1 or 2, characterized in that the method further comprises:

the terminal equipment receives second indication information from network equipment, wherein the second indication information indicates the terminal equipment to use the random access priority corresponding to the first characteristic;

the terminal device determines a random access priority used by the terminal device for random access by referring to the first random access priority and the second random access priority, and the method comprises the following steps:

and the terminal equipment refers to the second indication information to determine the random access priority used by the terminal equipment for random access.

5. The method according to claim 1 or 2, characterized in that the ordering of the first random access priority and/or the second random access priority is determined by the terminal device based on first information comprising at least one of: delay requirement information of the service or capability information of the terminal equipment.

6. The method according to any one of claims 1 to 5, further comprising:

the terminal equipment receives a first corresponding relation and a second corresponding relation from network equipment, wherein the first corresponding relation comprises a corresponding relation between a random access channel partition and a characteristic, and the second corresponding relation comprises a corresponding relation between a random access channel partition and a random access priority;

the terminal device determining a first random access priority corresponding to the first feature and a second random access priority corresponding to the second feature, including:

the terminal equipment refers to the first corresponding relation and the second corresponding relation to determine a first random access priority corresponding to the first feature and a second random access priority corresponding to the second feature.

7. The method of claim 6, wherein the method further comprises:

the terminal equipment receives identification information from the network equipment, wherein the identification information indicates the characteristics applicable to the random access priority corresponding to the random access channel partition;

the terminal device refers to the first corresponding relation and the second corresponding relation to determine a first random access priority corresponding to the first feature and a second random access priority corresponding to the second feature, and the method comprises the following steps:

The terminal equipment refers to the first corresponding relation, the second corresponding relation and the identification information to determine a first random access priority corresponding to the first feature and a second random access priority corresponding to the second feature.

8. A communication device, comprising:

the processing unit is used for determining a first random access priority corresponding to a first feature and a second random access priority corresponding to a second feature, wherein the first feature and the second feature are features corresponding to a service;

the processing unit is further configured to determine a first random access priority used by the apparatus for random access by referring to the ordering of the first random access priority and the second random access priority.

9. The apparatus of claim 8, wherein the first feature or the second feature comprises any one of:

10. The apparatus according to claim 8 or 9, characterized in that the apparatus further comprises:

and the receiving and transmitting unit is used for receiving first indication information from the network equipment, wherein the first indication information indicates the ordering of the first random access priority and/or the second random access priority.

11. The apparatus according to claim 8 or 9, characterized in that the apparatus further comprises:

a transceiver unit, configured to receive second indication information from a network device, where the second indication information indicates a terminal device to use a random access priority corresponding to the first feature;

the processing unit is further configured to determine a random access priority used by the device for random access with reference to the second indication information.

12. The apparatus according to claim 8 or 9, wherein the ordering of the first random access priority and/or the second random access priority is determined by the apparatus based on first information comprising at least one of: delay requirement information of the service or capability information of terminal equipment.

13. The device according to any one of claims 8 to 12, wherein,

the transceiver unit is further configured to receive a first correspondence and a second correspondence from a network device, where the first correspondence includes a correspondence between a random access channel partition and a feature, and the second correspondence includes a correspondence between a random access channel partition and a random access priority;

The processing unit is further configured to determine a first random access priority corresponding to the first feature and a second random access priority corresponding to the second feature with reference to the first correspondence and the second correspondence.

14. The apparatus of claim 13, wherein the device comprises a plurality of sensors,

the receiving and transmitting unit is further configured to receive identification information from the network device, where the identification information indicates a feature applicable to a random access priority corresponding to a random access channel partition;

the processing unit is further configured to determine a first random access priority corresponding to the first feature and a second random access priority corresponding to the second feature according to the first correspondence, the second correspondence, and the identification information.