WO2022021996A1 - 一种随机接入资源选择的方法以及相关装置 - Google Patents

一种随机接入资源选择的方法以及相关装置 Download PDF

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Publication number
WO2022021996A1
WO2022021996A1 PCT/CN2021/093008 CN2021093008W WO2022021996A1 WO 2022021996 A1 WO2022021996 A1 WO 2022021996A1 CN 2021093008 W CN2021093008 W CN 2021093008W WO 2022021996 A1 WO2022021996 A1 WO 2022021996A1
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Prior art keywords
frequency domain
probability
random access
domain resource
terminal device
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PCT/CN2021/093008
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English (en)
French (fr)
Inventor
谢宗慧
王宏
陈磊
李秉肇
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP21849766.7A priority Critical patent/EP4184968A4/en
Publication of WO2022021996A1 publication Critical patent/WO2022021996A1/zh
Priority to US18/158,794 priority patent/US20230164746A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a method and related apparatus for selecting random access resources.
  • Random access is a process of establishing a wireless link between a terminal device and a network device. After the random access between the terminal device and the network device is completed, the terminal device and the network device can communicate normally. In the random access process, the terminal device needs to select a physical random access channel (PRACH) resource to complete random access.
  • PRACH physical random access channel
  • the terminal equipment of NB-IoT and eMTC has the characteristics of low complexity, low cost, low power consumption and low bandwidth, and is suitable for a wide range of IoT scenarios. For example, smart water meters, smart electricity meters, smart homes, smart cities, etc.
  • Massive Machine Type Communications (mMTC) defined in 5G has won extensive discussion and attention. It is generated to adapt to the development of 5G and needs to have the characteristics of NB-IoT and eMTC terminal equipment.
  • such devices In order to meet the needs of providing wireless services for a large number of devices, such devices not only support selecting the anchor carrier as the frequency domain resource for transmitting NPRACH to initiate random access, but also support selecting the non-anchor carrier as the frequency domain resource for transmitting NPRACH to initiate random access. .
  • the random access triggered by different events follows the same principle to select the corresponding NPRACH resources, which may make the random access triggered by some emergency events unable to select better quality resources, which affects the timeliness of access.
  • the embodiments of the present application provide a method and a related device for random access resource selection, which are used to solve the technical problem of poor timeliness of current random access.
  • an embodiment of the present application provides a method for selecting random access resources, including: a terminal device obtains reference information; when it is determined that a first parameter and the reference information meet a preset condition, Two probabilities to select primary frequency domain resources or non-primary frequency domain resources to initiate random access, the first probability has a corresponding relationship with the primary frequency domain resources, and the second probability has a corresponding relationship with the non-primary frequency domain resources .
  • different probabilities are used for selection of primary frequency domain resources and non-primary frequency domain resources. Generally, the quality of the main frequency domain resources is better.
  • the random access triggered by some emergency events has a higher probability to select the main frequency domain resource, and the terminal device can select the resource with better quality, which solves the problem of current random access.
  • the main frequency domain resource is an initial partial bandwidth, and the non-main frequency domain resource is a non-initial partial bandwidth; or the main frequency domain resource is an anchor point carrier, the non-main frequency domain resource is a non-anchor point carrier; or the main frequency domain resource is a first narrowband, and the non-main frequency domain resource is a non-first narrowband.
  • the reference information includes an emergency event set, or the reference information includes a preset parameter range.
  • the first parameter includes a current event type that triggers random access
  • the preset condition includes: the event type that triggers random access belongs to the emergency Collection of events.
  • the first parameter includes a delay requirement for arriving services
  • the preset condition includes: the delay requirement for arriving services is within the preset parameter range Inside.
  • the first parameter includes a priority requirement for arriving services
  • the preset condition includes: the priority requirement for arriving services is within the preset parameter range Inside.
  • the emergency event set includes at least one of the following: initial access (Initial access from RRC_IDLE) in RRC idle state, RRC connection reestablishment ( RRC Connection Re-establishment procedure), uplink or downlink data arrives during the RRC connection state and the downlink synchronization state is non-synchronized (UL data arrival during RRC_CONNECTED when UL synchronisation status is"non-synchronised), there is downlink during the RRC connection state Data arrives and there is no physical uplink control channel PUCCH for scheduling request (UL data arrival during RRC_CONNECTED when there are no PUCCH resources for SR available), scheduling request failure, transition from RRC inactive state (Transition) from RRC_INACTIVE), the downlink data arrives and the uplink synchronization status is non-synchronized (DL data arrival during RRC_CONNECTED when UL synchronisation status is "non-synchronised”), synchronous reconfiguration (Request by R
  • the method before selecting the primary frequency domain resource or the non-primary frequency domain resource to initiate random access according to the first probability and the second probability, the method further includes: Obtaining measurement results of each frequency resource; determining the first probability and the second probability according to the measurement results.
  • the method further includes: the terminal device receives capability indication information from an access network device, where the capability indication information is used to indicate to the terminal device When it is determined that the first parameter and the reference information meet the preset condition, the primary frequency domain resource or the non-primary frequency domain resource is selected according to the first probability and the second probability to initiate random access.
  • the method before selecting the primary frequency domain resource or the non-primary frequency domain resource to initiate random access according to the first probability and the second probability, the method further includes: The service type to which the current service belongs is determined according to whether the first parameter is within the preset parameter range; the first probability and the second probability are determined according to the service type.
  • the first probability is a preset probability P
  • the calculation formula of the second probability is: (1-P)*q(i)/q , where q(i) is the relative quality of the i-th non-main frequency domain resource, q is the sum of the relative qualities of all the non-main frequency domain resources, and i is an integer greater than or equal to 1.
  • the first probability and the second probability are both q(i)/q, and q(i) is the i-th main frequency domain
  • the relative quality of the resource or the non-primary frequency domain resource, q is the sum of all relative qualities, and i is an integer greater than or equal to 1.
  • the relative quality is one of: reference signal received power RSRP, reference signal received quality RSRQ, signal-to-interference-noise ratio SINR, and signal-to-noise ratio SNR kind.
  • the reference signal includes one or more of a cell reference signal CRS, a synchronization signal block SSB, and a channel state reference signal CSI-RS.
  • an embodiment of the present application provides another method for random access resource selection, the method includes: a network device sends capability indication information to a terminal device, where the capability indication information is used to indicate that the terminal device is determining the first When the parameter and the reference information meet the preset conditions, the primary frequency domain resource or the non-primary frequency domain resource is selected according to the first probability and the second probability to initiate random access.
  • the network device may also send reference information to the terminal device, where the reference information includes an emergency event set, or the reference information includes a preset parameter range.
  • an embodiment of the present application provides a communication device, including: an obtaining module, configured to obtain reference information; the processing module, configured to, when it is determined that the first parameter and the reference information meet a preset condition, according to the first parameter A probability and a second probability to select primary frequency domain resources or non-primary frequency domain resources to initiate random access, the first probability has a corresponding relationship with the primary frequency domain resources, and the second probability is associated with the non-primary frequency domain resources Resources have corresponding relationships.
  • the main frequency domain resource is an initial partial bandwidth, and the non-main frequency domain resource is a non-initial partial bandwidth; or the main frequency domain resource is an anchor point carrier, the non-main frequency domain resource is a non-anchor point carrier; or the main frequency domain resource is a first narrowband, and the non-main frequency domain resource is a non-first narrowband.
  • the reference information includes an emergency event set, or the reference information includes a preset parameter range.
  • the first parameter includes a current event type that triggers random access
  • the preset condition includes: the event type that triggers random access belongs to the emergency Collection of events.
  • the first parameter includes a delay requirement for arriving services
  • the preset condition includes: the delay requirement for arriving services is within the preset parameter range Inside.
  • the first parameter includes a priority requirement for arriving services
  • the preset condition includes: the priority requirement for arriving services is within the preset parameter range Inside.
  • the emergency event set includes at least one of the following: initial access in RRC idle state, RRC connection re-establishment, during RRC connected state
  • Uplink or downlink data arrives and downlink synchronization state is asynchronous, downlink data arrives during RRC connected state and there is no physical uplink control channel PUCCH for scheduling request, scheduling request fails, transition from RRC inactive state, downlink data Arrives and the uplink synchronization state is Asynchronous, synchronizes reconfiguration, establishes time alignment for timing advance groups, requests other system messages, and beam failure recovery.
  • the method before selecting the primary frequency domain resource or the non-primary frequency domain resource to initiate random access according to the first probability and the second probability, the method further includes: Obtaining measurement results of each frequency resource; determining the first probability and the second probability according to the measurement results.
  • the processing module is further configured to: determine the service type to which the current service belongs according to whether the first parameter is within the preset parameter range; The first probability and the second probability are determined.
  • the processing device is further configured to: acquire a measurement result of each frequency resource; determine the first probability and the second probability according to the measurement result .
  • the first probability is a preset probability P
  • the calculation formula of the second probability is: (1-P)*q(i)/q , where q(i) is the relative quality of the i-th non-main frequency domain resource, q is the sum of the relative qualities of all the non-main frequency domain resources, and i is an integer greater than or equal to 1.
  • the first probability and the second probability are both q(i)/q, and q(i) is the i-th main frequency domain
  • the relative quality of the resource or the non-primary frequency domain resource, q is the sum of all relative qualities, and i is an integer greater than or equal to 1.
  • the relative quality is one of: reference signal received power RSRP, reference signal received quality RSRQ, signal-to-interference-noise ratio SNR, and signal-to-noise ratio SNR kind.
  • the reference signal includes one or more of a cell reference signal CRS, a synchronization signal block SSB, and a channel state reference signal CSI-RS.
  • an embodiment of the present application provides a terminal device, including a memory, a processor, and a program stored on the memory and executable on the processor, and the processor implements the process described in the first step when the processor executes the program. method on the one hand.
  • an embodiment of the present application provides a computer-readable storage medium, which, when an instruction is executed on a computer device, causes the computer device to execute the method of the first aspect.
  • FIG. 1 is a schematic diagram of a method for random access resource selection in an embodiment of the present application
  • Fig. 2 is the schematic diagram of BWP in the embodiment of the application.
  • FIG. 3 is an exemplary diagram of a communication system in an embodiment of the application.
  • FIG. 4 is a signaling diagram of a method for random access resource selection according to Embodiment 2 of the present application.
  • FIG. 5 is a signaling diagram of a method for random access resource selection according to Embodiment 3 of the present application.
  • FIG. 6 is an example diagram of main frequency domain resources and non-main frequency domain resources in an embodiment of the application.
  • FIG. 7 is a schematic diagram of a communication device according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the embodiments of the present application provide a method and a related device for random access resource selection, which are used to solve the technical problem of poor timeliness of current random access.
  • words such as “exemplary” or “for example” are used to represent examples, illustrations or illustrations. Any embodiments or designs described in the embodiments of the present application as “exemplary” or “such as” should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as “exemplary” or “such as” is intended to present the related concepts in a specific manner.
  • Random access may include a process from sending a random access preamble from a terminal device to establishing a basic signaling connection between the terminal device and a network device.
  • random access may include 4-step random access and 2-step random access.
  • the 4-step random access includes the following 4 processes:
  • the terminal device sends a random access preamble, and this process is usually also referred to as the process of the terminal device sending MSG1.
  • the network device sends a random access response message, and this process is generally also referred to as the process of the network device sending MSG2.
  • the terminal device sends a radio resource control (radio resource control, RRC) connection request message, and this process is generally also referred to as the process of the terminal device sending MSG3.
  • RRC radio resource control
  • the network device sends an RRC connection establishment message, and this process is generally also referred to as the process of the network device sending MSG4.
  • the 2-step random access includes the following two processes:
  • the terminal device sends a random access preamble and an RRC connection request message, and this process is generally also referred to as a process of the terminal device sending MSGA.
  • the network device sends an RRC connection establishment message, and this process is generally also referred to as the process of the network device sending MSGB.
  • the terminal device In the process of implementing random access by the terminal device, the terminal device needs to select appropriate random access resources in order to send the random access preamble and the RRC connection request message.
  • the random access resources refer to the resources that the terminal device needs to use in the process of initiating random access.
  • the process for the terminal equipment to select random access resources may be as follows: the terminal equipment first selects an anchor carrier (anchor carrier) or a non-anchor carrier (non-anchor carrier), and then selects a specific PRACH resource.
  • the terminal device When multiple carriers provide PRACH resources of the same coverage level, the terminal device will randomly select one of the carriers as the PRACH resource, and the selection probability is as follows:
  • the selection probability of the anchor carrier PRACH resource for a given enhanced coverage level nprach-ProbabilityAnchor is determined by nprach- The corresponding fields in ProbabilityAnchorList are given.
  • the selection probabilities of PRACH resources of all non-anchor carriers are equal, and the probability of selecting a PRACH resource on a given non-anchor carrier is (1-nprach-ProbabilityAnchor)/(the number of non-anchor NPRACH resources).
  • an embodiment of the present application provides a method for selecting random access resources. As shown in FIG. 1 , the method for selecting random access resources includes:
  • the terminal device obtains reference information
  • the terminal device may first acquire the reference information, and then determine whether the reference information and the first parameter satisfy a preset condition. When the reference information and the first parameter satisfy the preset condition, the terminal device may perform step 103 .
  • the first parameter may be the event type that currently triggers random access
  • the reference information may include an emergency event set
  • the reference information and the first parameter may satisfy a preset condition
  • the event that triggers random access may belong to Emergency collection.
  • the first parameter may be a parameter that can be acquired by any terminal device, such as a delay requirement for arriving services, a priority requirement for arriving services, etc., which are not limited in this embodiment of the present application.
  • the reference information may include a corresponding preset parameter range, for example, a parameter range corresponding to a delay requirement for arriving services, which is not limited in this embodiment of the present application.
  • the reference information and the first parameter meeting the preset condition may be that the delay requirement for reaching the service is within the preset parameter range.
  • the terminal device may confirm whether to perform the random access resource selection method provided by the embodiments of the present application through the capability indication information. Exemplarily, if the capability indication information received by the terminal device from the access network device is 1, the terminal device may execute the random access resource selection method provided by the embodiment of this application, and select the main frequency according to the first probability and the second probability. Domain resources or non-primary frequency domain resources initiate random access. If the capability indication information received by the terminal device from the access network device is 0, the terminal device will not execute the random access resource selection method provided by the embodiment of the present application.
  • the terminal device determines a first probability corresponding to the main frequency domain resource and a second probability corresponding to the non-main frequency domain resource;
  • the first probability and the second probability may be delivered by a network device, for example, the first probability and the second probability are carried in a system message and delivered; or, the first probability and the second probability may be a protocol agreed.
  • the terminal device may determine the first probability and the second probability according to a formula. The formula may be stipulated in the protocol, and the terminal device may obtain relevant parameters from itself or from the communication with the network device, and then determine the first probability and the second probability according to the relevant parameters and the formula.
  • the first probability and the second probability for example, the first probability and/or the second probability, or the relevant formula for calculating the first probability and/or the second probability are pre-stored in the terminal device's On the storage medium, this embodiment of the present application does not limit this.
  • the main frequency domain resource may be an initial partial bandwidth (initial BWP, BWP: bandwidth part bandwidth), and the non-main frequency domain resource may be a non-initial partial bandwidth, namely NR Other BWPs except the initial BWP.
  • the 5G communication system supports the configuration of a partial bandwidth (BandWidth Part, BWP), and the base station can flexibly adjust the bandwidth according to the service data volume of the terminal equipment (UE) to save the power consumption of the terminal equipment.
  • BWP BandWidth Part
  • the base station configures the initial partial bandwidth (initial BWP) through system messages for the initial access of the terminal device.
  • the base station can configure multiple dedicated partial bandwidths (dedicated BWP) for the UE. ), the base station can activate the dedicated BWP of the UE through dynamic indication.
  • FIG. 2 is a schematic diagram of a BWP in an embodiment of the present application.
  • the UE accesses the base station through the initial BWP, enters the RRC connected state, and then the base station configures three dedicated BWPs for the UE, namely BWP#1, BWP#2, and BWP#3.
  • the initial BWP can be 5MHz, 10MHz, 15MHz or 20MHz.
  • Dedicated BWP can be 5MHz, 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 40MHz, 50MHz, 60MHz, 80MHz and 100MHz.
  • the initial BWP may not be able to satisfy such a large number of UEs that initiate initial access at the same time, causing the initial BWP to be overloaded. Therefore, the method for selecting random access resources provided in the embodiments of the present application can optimize the selection of BWPs, so that the random access triggered by an emergency event can select a BWP with better quality.
  • the primary frequency domain resource may be an anchor carrier, and the non-primary frequency domain resource may be a non-anchor carrier (non-anchor carrier). anchor carrier).
  • the primary frequency domain resource may be the first narrowband
  • the non-primary frequency domain resources may be other narrowbands, namely Other narrowbands except the first narrowband in the narrowband information.
  • step 101 and step 102 may not have a sequence relationship.
  • step 102 is generally performed after step 101 .
  • the terminal device determines the random access resource according to the first probability and the second probability;
  • the terminal device may perform step 103 .
  • the first parameter may be the event type that currently triggers random access
  • the reference information may include an emergency event set
  • the reference information and the first parameter may satisfy a preset condition
  • the event that triggers random access may belong to Emergency collection.
  • the first parameter may be a parameter that can be acquired by any terminal device, such as a delay requirement for arriving services, a priority requirement for arriving services, etc., which are not limited in this embodiment of the present application.
  • the reference information may include a corresponding preset parameter range, for example, a parameter range corresponding to a delay requirement for arriving services, which is not limited in this embodiment of the present application.
  • the reference information and the first parameter meeting the preset condition may be that the delay requirement for reaching the service is within the preset parameter range.
  • the random access resource may be BWP information, carrier information or narrowband information. In practical applications, the random access resource may also be of other types, which is not limited in the embodiment of the present application. It can be understood that the random access resource is one or more selected from the main frequency domain resources or the non-main frequency domain resources in step 102 .
  • the terminal device may use a probability selection algorithm to select and determine random access resources from primary frequency domain resources and non-primary frequency domain resources through the first probability and the second probability.
  • the embodiments of the present application do not limit the probability selection algorithm.
  • the first probability is 1 (that is, the probability of the main frequency domain resource is 100%), and the second probability is 0.
  • the terminal device determines to select the primary frequency domain resource as the random access resource according to the first probability and the second probability. If the primary frequency domain resource is the initial BWP, the terminal device selects the initial BWP as the random access resource.
  • the terminal device may select and determine the random access resource from the main frequency domain resource and the non-main frequency domain resource according to the condition that the probability of the main frequency domain resource is 70%.
  • the main frequency domain resource is more likely to be selected, and the terminal device is more inclined to select the main frequency domain resource with higher reliability, and it is easier to select the resource with better quality, which solves the random access time limit triggered by the current emergency event. Poor technical issues.
  • the terminal device performs random access according to the random access resource.
  • the terminal device may perform random access according to random access resources.
  • the random access process is similar to the aforementioned 4-step random access and 2-step random access, and will not be repeated here.
  • the terminal device may send the random access preamble or the RRC connection establishment request message according to the frequency domain/carrier/narrowband corresponding to the random access resource. This is not repeated in this embodiment of the present application.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • LTE long term evolution
  • 5G fifth generation
  • 5G new radio
  • the communication system may also be applicable to future-oriented communication technologies, and the technical solutions provided by the embodiments of the present application are all applicable.
  • the system architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • FIG. 3 is an exemplary diagram of a communication system in an embodiment of the present application.
  • network device 1 and 6 terminal devices (including terminal device 1, terminal device 2, terminal device 3, terminal device 4, terminal device 5, and terminal device 6) form a communication system.
  • the terminal device can send uplink data to the network device 1, and the network device 1 can receive the uplink data sent by the terminal device.
  • the network device 1 can send downlink data to the terminal device, and the terminal device can receive the downlink data sent by the base station.
  • the network device 1 and the network device 2 are communicatively connected for communicating with other communication systems.
  • terminal equipment is also called user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), etc.
  • a device with data connectivity, or a chip provided in the device for example, a handheld device, a vehicle-mounted device, and the like with a wireless connection capability.
  • terminal devices are: mobile phone (mobile phone), tablet computer, notebook computer, PDA, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, smart grid wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the network device may be any device with a wireless transceiver function, or a chip provided in a specific wireless transceiver function device.
  • Network equipment includes but is not limited to: base stations (such as base station BS, base station NodeB, evolved base station eNodeB or eNB, base station gNodeB or gNB in the fifth generation 5G communication system, base station in future communication system, access node in WiFi system , wireless relay node, wireless backhaul node) and so on.
  • the base station can be: a macro base station, a micro base station, a pico base station, a small base station, a relay station, and the like.
  • Multiple base stations may support a network of one or more technologies mentioned above, or a future evolution network.
  • a base station may contain one or more co-sited or non-co-sited transmission reception points (TRPs).
  • the network device may also be a wireless controller, a centralized unit (central unit, CU), or a distributed unit (distributed unit, DU) in a cloud radio access network (cloud radio access network, CRAN) scenario.
  • the following description takes the network device as the base station as an example.
  • the multiple network devices may be base stations of the same type, or may be base stations of different types.
  • the base station can communicate with the terminal equipment, and can also communicate with the terminal equipment through the relay station.
  • the terminal device can support communication with multiple base stations of different technologies.
  • the terminal device can support communication with the base station supporting the LTE network, can also support communication with the base station supporting the 5G network, and can also support the base station supporting the LTE network and the 5G network. dual connectivity of the base station.
  • the terminal equipment is connected to the RAN node of the wireless network.
  • RAN nodes are: gNB, TRP, evolved Node B (evolved Node B, eNB), next generation evolved Node B (next generation evolved Node B, LTE ng-eNB), radio network controller (radio network controller, RNC), Node B (Node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B , HNB), base band unit (BBU), or Wifi access point (access point, AP), etc.
  • the network device 1 may be a base station type network device
  • the network device 2 may be a core network device type network device.
  • the terminal device can select appropriate random access resources to perform random access according to the actual situation.
  • the process of selecting random access resources is similar to that in the foregoing embodiment corresponding to FIG. 1 .
  • the reference information in step 101 includes an emergency event set, and the emergency event set includes: initial access in RRC idle state, RRC connection reestablishment, uplink or downlink data arrival and downlink synchronization state during RRC connected state
  • the emergency event set includes: initial access in RRC idle state, RRC connection reestablishment, uplink or downlink data arrival and downlink synchronization state during RRC connected state
  • PUCCH physical uplink control channel
  • scheduling request fails, transition from RRC inactive state
  • handover downlink data arrives and uplink synchronization state is inactive
  • the above-mentioned emergency events include scenarios of contention random access and scenarios of non-contention random access.
  • the following scenarios of contention random access are described in detail:
  • the state of the RRC layer is RRC_IDLE, and the terminal device needs a connection setup request (CONNECTION SETUP REQUEST), but the network device 1 cannot know it, so it needs to trigger the terminal device to perform a competitive random access process.
  • the radio link layer control protocol (RLC) on the terminal device side retransmits the maximum number of uplinks, which will trigger the re-establishment.
  • the network device 1 does not know the terminal device's To reestablish the state, it is also necessary to trigger the terminal device to perform the contention random access procedure.
  • Uplink or downlink data arrives during the RRC connection state and the downlink synchronization state is non-synchronized (UL data arrival during RRC_CONNECTED when UL synchronisation status is "non-synchronised");
  • the uplink is out of synchronization.
  • the terminal device sends data (for example, it needs to report a measurement report or send user data)
  • the uplink is in an "out-of-sync" state. This situation is similar to the initial access.
  • the network device 1 cannot know when the terminal device has uplink services to do, so the terminal device needs to be triggered to perform a contention random access procedure.
  • the terminal device If the terminal device does not have uplink scheduling grant information (UL_GRANT) for sending the buffer status report (Buffer Status Report, BSR), the terminal device will send the uplink resource request through the uplink scheduling request (Scheduling Request, SR), but if there is no SR resource either , the UL_GRANT can only be applied for through the contention access process. At this time, the network device 1 obviously does not know whether the terminal device has uplink data to send. Both cases can only be based on contention-based random access.
  • UL_GRANT uplink scheduling grant information
  • BSR Buffer Status Report
  • the terminal device After the SR transmission fails, the terminal device also needs to perform contention random access.
  • a contention random access procedure is adopted.
  • the network device 1 triggers the transition from INACTIVE to CONNECTED through RAN Paging, since Paging does not carry random access channel (RACH) resources, it is also a competition-based RA process.
  • RACH random access channel
  • the non-contention random access scenario is described in detail below (it can be understood that, if the network device 1 finds that there is no non-contention resource during the non-contention access process, it will also go to the contention access process at this time).
  • the handover is initiated by the network device side, so the non-contention access procedure is performed preferentially.
  • Downlink data arrives and the uplink synchronization status is non-synchronized (DL data arrival during RRC_CONNECTED when UL synchronisation status is "non-synchronised”);
  • the uplink is in an "unsynchronized" state, and the network device side can cooperate with the MAC and RRC to perform the non-contention access process preferentially.
  • the contention-based random access procedure is triggered when no dedicated preamble is available.
  • Synchronous reconfiguration Request by RRC upon synchronous reconfiguration
  • RRC signaling reconfigurationWithSync has dedicated RACH resources to take advantage of non-contention random access.
  • the RACH process is triggered when the Scell is added.
  • the terminal device will initiate RA when it needs to request a specific SI.
  • the terminal device will use Msg1 to notify the network side to obtain system information based on a non-contention scenario.
  • the terminal device will use Msg3 to send the SI request message based on the contention scenario.
  • the terminal device After detecting the beam failure, the terminal device first triggers the beam failure recovery process by initiating the random access process on the PCell, and then selects an appropriate beam to execute the beam failure recovery process. If the network device 1 provides dedicated Random Access resources, non-contention random access is preferentially performed. When the random access process is completed, the beam failure recovery process is also considered to be completed.
  • the terminal device when the terminal device performs the positioning process, the terminal device can perform non-contention random access.
  • the methods in the various embodiments of the present application may be used to select random access resources. It can also be said that when the above event triggers random access, the terminal device can select random access resources according to the methods in various embodiments of the present application, and then perform random access according to the selected random access resources.
  • the terminal device may consider that the reference information and the first parameter meet the preset condition.
  • the first parameter may be the event type currently triggering random access, and the reference information may include an emergency event set.
  • the event type currently triggering random access matches any one of the emergency events in the emergency event set, the preset condition is satisfied.
  • the above emergency events are only some examples of the embodiments of the present application.
  • the terminal device and the network device 1 may further agree on other events as emergency events, which are not limited in the embodiments of the present application.
  • the above-mentioned set of emergency events may be included in the reference information.
  • the terminal device can obtain the above-mentioned emergency event set by obtaining the reference information.
  • the terminal device and the network device may pre-agreed (through protocols or information exchange, etc.) an emergency event set.
  • the terminal device detects that the currently occurring event belongs to the pre-agreed emergency event set
  • the terminal device determines that the first set of emergency events is satisfied.
  • random access resources are selected according to the first probability and the second probability.
  • the terminal device may acquire reference information in advance, and the reference information includes a pre-agreed set of emergency events.
  • the terminal device monitors that the currently occurring event belongs to the pre-agreed emergency event set, the terminal device determines that the first preset condition is satisfied, and selects the random access resource according to the first probability and the second probability.
  • the method for the terminal device to monitor whether the currently occurring event belongs to the pre-agreed emergency event set may be that the terminal device obtains the current event log and checks one by one whether the events in the log belong to one of the emergency event sets. In practical applications, there may also be other monitoring methods, which are not limited in this embodiment of the present application.
  • the reference information acquired by the terminal device may include an emergency event set, the first parameter includes the current event type that triggers random access, and the preset condition includes: the event type that triggers random access belongs to the emergency event set .
  • the reference information acquired by the terminal device may include a preset parameter range, the first parameter includes a delay requirement for reaching the service, and the preset condition includes: the delay requirement for reaching the service is within the preset parameter range.
  • the reference information acquired by the terminal device may include a preset parameter range, the first parameter includes a priority requirement for arriving services, and the preset condition includes: the priority requirement for arriving services is within the preset parameter range.
  • FIG. 4 is a signaling diagram of a method for random access resource selection according to Embodiment 2 of the present application. The method includes the steps:
  • the terminal device obtains a preset parameter range in the reference information
  • the terminal device may acquire reference information and perform random access resource selection after receiving the instruction, or the terminal device may trigger random access resource selection after receiving the reference information, which is not done in this embodiment of the present application limited.
  • the reference information may be issued by a network device (such as a base station or a core network device), or may be agreed in a protocol.
  • a network device such as a base station or a core network device
  • the network device 1 may deliver reference information to the terminal device.
  • the reference information may include a preset parameter range.
  • the preset parameter range may be determined by the parameter maximum value or the parameter minimum value, or may be determined by the threshold value of the service type.
  • the meaning of the threshold value is that if the specified parameter of the current service is greater than the threshold value, the current service belongs to service type A; if the specified parameter of the current service is less than or equal to the threshold value, the current service belongs to service type B.
  • the threshold value may be, for example, at least one of a priority (Priority Level) threshold and a delay (Packet Delay Budget) threshold.
  • different types of preset parameter ranges may also be selected according to actual conditions, for example, other parameter thresholds such as data packet loss rate thresholds may be specified, which are not limited in this embodiment of the present application.
  • the preset parameter range may also be directly the corresponding parameter range, for example, the time delay is 100ms-300ms. If the specified parameter of the current service is within the parameter range, the current service belongs to service type A; if the specified parameter of the current service is not within the parameter range, the current service belongs to service type B.
  • the reference information may further include an emergency event set, and the terminal device may acquire the emergency event set from the reference information.
  • the terminal device can monitor whether the currently occurring event belongs to a pre-agreed emergency event set. If so, the terminal device may determine that the first preset condition is satisfied, and select the random access resource according to the first probability and the second probability.
  • the terminal device may first determine whether the current event belongs to the emergency event set. If yes, then determine the corresponding service type according to the specified parameters, so as to select primary frequency domain resources or non-primary frequency domain resources to initiate random access according to the probability value corresponding to the service type.
  • the reference information may further include measurement results of each frequency domain resource.
  • the measurement result of each frequency domain resource is used to calculate the first probability and the second probability.
  • the measurement result may not be included in the reference information, but obtained in another manner, which is not limited in this embodiment of the present application.
  • the terminal device determines the corresponding service type according to the specified parameter of the current service and the preset parameter range;
  • the terminal device may obtain the specified parameters of the current service (also referred to as the first parameter, for example, may include delay requirements for arriving services, priority requirements for arriving services, etc.) and the parameters obtained in step 201.
  • the preset parameter range is used to determine the corresponding service type.
  • the terminal device determines that the service belongs to the first type of service, and when the delay requirement of the arriving service is greater than the above-mentioned time delay Extending the threshold, the terminal device determines that the service belongs to the second type of service.
  • the terminal device determines that the service belongs to the first type of service, and when the priority of the arriving service is less than the above-mentioned priority threshold, the terminal device determines that the service belongs to the second type of service.
  • the terminal device can determine whether the corresponding service belongs to the first type of service or the second type of service according to the EPS QoS quality characteristic (QCI).
  • QCI EPS QoS quality characteristic
  • Table 1 is an example of the QCI in the embodiment of the present application.
  • the current arriving service is a conversational voice
  • the corresponding delay requirement is 100ms.
  • the terminal device determines that the service (voice session) is the first type of service.
  • QCI priority Latency requirements business example 1 100ms voice conversation 2 4 150ms Video session (live streaming service) ... ... ... ... ...
  • the terminal device can determine whether the corresponding service belongs to the first type of service or the second type of service according to the 5G QoS quality characteristic (5QI).
  • Table 2 is an example of 5QI in the embodiment of the present application.
  • the current arriving service is a conversational voice
  • the corresponding delay is 100ms.
  • the delay threshold is 150ms
  • the specified parameter of the current service is less than the threshold (delay threshold 150ms).
  • the terminal device determines that the service (voice session) is the first type of business.
  • the resource scheduling priority between QoS Flows (Default Priority Level) is used to distinguish the QoS Flow priorities within a terminal device or between different terminal devices. The smaller the value, the higher the priority, and the value is 1 to 127.
  • the delay (Packet Delay Budget) represents the delay from the terminal device to the core network (UPF).
  • the terminal device may jointly determine the corresponding service type by combining multiple specified parameters and preset parameter ranges.
  • the terminal device determines that the service belongs to the first type of service.
  • the terminal device determines that the service belongs to the second type of service.
  • the terminal device determines that the service belongs to the third type of service.
  • the terminal device determines that the service belongs to the fourth type of service.
  • Table 3 is an example of the correspondence between the judgment conditions and the service types.
  • the terminal device determines the first probability corresponding to the primary frequency domain resource and the second probability corresponding to the non-primary frequency domain resource according to the service type;
  • the terminal device may determine the first probability corresponding to the main frequency domain resource and the second probability corresponding to the non-main frequency domain resource according to the service type obtained in step 302 . It can be understood that there is a corresponding relationship between the service type obtained in step 302 and the first probability and the second probability.
  • the corresponding relationship may be in the form of a table, or may be in the form of a formula. In practical applications, other forms may also be used, which are not limited in the embodiments of the present application.
  • Table 4 is a table example of the correspondence between the service type and the first probability and the second probability.
  • P1 ⁇ P8 are all preset probabilities, which can be read according to actual needs.
  • Table 5 is another table example of the correspondence between the service type and the first probability and the second probability.
  • P is the preset probability
  • q(i) is the relative quality of the i-th main frequency domain resource or the non-main frequency domain resource
  • q is the sum of all relative qualities
  • i is greater than or equal to An integer of 1
  • P5 ⁇ P6 are preset probabilities.
  • the terminal device determines the random access resource according to the first probability and the second probability
  • step 204 is similar to step 103 in the foregoing embodiments corresponding to FIG. 1 , which is not repeated in this embodiment of the present application.
  • the terminal device performs random access according to the random access resource.
  • step 205 is similar to step 104 in the foregoing embodiments corresponding to FIG. 1 , which is not repeated in this embodiment of the present application.
  • the terminal device first determines what kind of service the current service belongs to, and then determines the first probability and the second probability with reference to the delay and priority requirements of the service, so that the random access resource selection in this application is made.
  • the method can adapt to various services, and can perform different probability allocations according to different requirements of various services at the same time, so that the method of random access resource selection can meet the timeliness requirements of terminal equipment of various services.
  • FIG. 5 is a signaling diagram of a method for random access resource selection according to Embodiment 3 of the present application. The method includes the steps:
  • a terminal device acquires a measurement result of each frequency domain resource.
  • the terminal device may acquire reference information, and the reference information may include the measurement result of each frequency domain resource. After acquiring the reference information, the terminal device can extract the measurement result of each frequency domain resource from the reference information.
  • the terminal device may obtain a corresponding measurement result by measuring each frequency domain resource.
  • the terminal device may measure the downlink reference signal to obtain the measurement result of the downlink reference signal.
  • the terminal device may obtain the measurement result by measuring the reference signal sent by the access network device, and the reference signal may include at least one of the following: a cell-specific reference signal (CRS), a synchronization signal block (synchronization signal block) , SSB) and channel state reference signal (channel state information reference signal, CSI-RS.
  • the measurement result may include at least one of the following: reference signal received power (RSRP), reference signal received quality (reference signal received quality) , RSRQ), signal-to-interference noise ratio (SINR), or signal-to-noise ratio (SNR), etc.
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • SINR signal-to-noise ratio
  • the terminal device may also measure other reference signals to obtain other types of measurement results, which are not limited in this embodiment of the present application.
  • the above measurement result may be a one-time measurement result, or may be a periodic measurement result.
  • the terminal device may set a preset time interval, that is, perform a period of measurement at regular intervals, so as to obtain periodic measurement results.
  • the terminal device determines a first probability corresponding to the primary frequency domain resource and a second probability corresponding to the non-primary frequency domain resource;
  • the terminal device may determine the first probability corresponding to the primary frequency domain resource and the second probability corresponding to the non-primary frequency domain resource according to the measurement result obtained in step 201 . It can be understood that there is a corresponding relationship between the measurement result obtained in step 201 and the first probability and the second probability. The corresponding relationship may be in the form of a list or in the form of a formula. In practical applications, other forms may also be used, which are not limited in the embodiments of the present application.
  • the terminal device only scales the probability that other frequency resources are selected, the corresponding relationship can be expressed as:
  • the probability that the main frequency domain resource is selected (the first probability): P;
  • P is a preset probability
  • q(i) is the relative quality of the i-th non-main frequency domain resource
  • q is the sum of the relative qualities of all the non-main frequency domain resources
  • i is greater than or equal to 1 the integer.
  • FIG. 6 is an example diagram of primary frequency domain resources and non-primary frequency domain resources in an embodiment of the present application.
  • the preset P of the main frequency domain resource is 50%
  • the relative quality of other frequency domain resources can be represented by the relative value of RSRP in the measurement result.
  • the foregoing relative quality may be calculated and obtained according to the actual value of RSRP or related parameters, which is not limited in this embodiment of the present application.
  • the terminal device uses the measurement results corresponding to the frequency domain resources to scale the probability that all frequency resources are selected, and the corresponding relationship can be expressed as:
  • the probability that the main frequency domain resource is selected (the first probability): q(i)/q;
  • q(i) is the relative quality of the i-th main frequency domain resource or the non-main frequency domain resource, q is the sum of all relative qualities, and i is an integer greater than or equal to 1.
  • the frequency resources with better measurement results indicate that the quality of the frequency resources is better, and the corresponding probability of being selected is higher. Relatively, the measurement results are relatively low. Poor frequency resources indicate that the quality of the frequency resources is poor and the probability of being selected is low.
  • the terminal device may additionally set other formulas conforming to specific application scenarios, which are not limited in this embodiment of the present application.
  • the terminal device determines the random access resource according to the first probability and the second probability
  • step 303 is similar to step 103 in the foregoing embodiments corresponding to FIG. 1 , which is not repeated in this embodiment of the present application.
  • the terminal device performs random access according to the random access resource.
  • step 304 is similar to step 104 in the foregoing embodiments corresponding to FIG. 1 , and details are not described in this embodiment of the present application.
  • the terminal device triggers random access resource selection after receiving the measurement result, or the terminal device performs measurement after receiving the instruction to obtain the measurement result, or the terminal device performs the measurement periodically.
  • This embodiment of the present application does not limit this.
  • FIG. 7 is a schematic diagram of a communication apparatus according to an embodiment of the present application.
  • the communication device 700 includes:
  • the communication apparatus 700 may be the terminal equipment in the method embodiments shown in FIG. 1 , FIG. 4 , and FIG. 5 .
  • the acquisition module 701 may be configured to perform step 101 or other related steps in the respective embodiments corresponding to FIG. 1 above, or perform step 201 or other related steps in the method embodiment shown in FIG. Step 301 or other related steps in the method embodiment shown in 5;
  • the processing module 702 can be configured to perform steps 102, 103, 104 or other related steps in the respective embodiments corresponding to FIG. 1, or perform steps 202, 203, Step 204 or other related steps, or perform step 302, step 303, step 304, step 305 or other related steps in the method embodiment shown in FIG. 5 above;
  • the communication apparatus 700 corresponds to the terminal equipment in the above method embodiments, and the units in the communication apparatus 700 and the other operations and/or functions mentioned above are respectively for realizing the terminal equipment in the method shown in FIG. 1 or the terminal equipment shown in FIG. 5 .
  • the various steps and methods performed by the terminal device in the shown method or the terminal device in the method shown in FIG. 4 for details, refer to the above method embodiments, which are not repeated here for brevity.
  • FIG. 8 is a schematic structural diagram of a terminal device 800 according to an embodiment of the present application.
  • the terminal device 800 can be applied to the system shown in FIG. 3 to perform the functions of the terminal device in the foregoing method embodiments.
  • FIG. 8 only shows the main components of the terminal device.
  • the terminal device 800 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control the entire terminal device, execute software programs, and process data of software programs, for example, to support the terminal device to perform the actions described in the above method embodiments, such as Receive the usage threshold of the wake-up signal, and determine whether to monitor the wake-up signal according to the usage threshold and the eDRX cycle.
  • the memory is mainly used to store software programs and data, for example, to store the usage threshold of the wake-up signal described in the above embodiments.
  • the control circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • the control circuit together with the antenna can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • FIG. 8 only shows one memory and one processor. In an actual terminal device, there may be multiple processors and multiple memories.
  • the memory may also be referred to as a storage medium or a storage device, etc., which is not limited in this embodiment of the present application.
  • the processor may include a baseband processor and/or a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data
  • the central processing unit is mainly used to control the entire terminal device. , execute the software program, and process the data of the software program.
  • the processor in FIG. 8 may integrate the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit may also be independent processors, interconnected by technologies such as a bus.
  • a terminal device may include multiple baseband processors to adapt to different network standards, a terminal device may include multiple central processors to enhance its processing capability, and various components of the terminal device may be connected through various buses.
  • the baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • an antenna and a control circuit with a transceiving function may be regarded as the transceiver 801 of the terminal device 800, for example, for supporting the terminal device to perform the aforementioned receiving function and transmitting function.
  • the processor with the processing function is regarded as the processor 802 of the terminal device 800 .
  • the terminal device 800 includes a transceiver 801 and a processor 802 .
  • a transceiver may also be referred to as a transceiver, a transceiver, or the like.
  • the device used to implement the receiving function in the transceiver 801 may be regarded as a receiving unit, and the device used to implement the transmitting function in the transceiver 801 may be regarded as a transmitting unit, that is, the transceiver 801 includes a receiving unit and a transmitting unit,
  • the receiving unit may also be called a receiver, an input port, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter or a transmitting circuit, and the like.
  • the processor 802 may be configured to execute the instructions stored in the memory, so as to control the transceiver 801 to receive signals and/or send signals, so as to complete the functions of the terminal device in the foregoing method embodiments.
  • the function of the transceiver 801 can be considered to be implemented by a transceiver circuit or a dedicated chip for transceiver.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
  • the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are 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 execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

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Abstract

本申请提供了一种随机接入资源选择的方法及相关装置，该方法包括：终端设备获取参考信息；在确定第一参数和参考信息满足预设条件时，根据第一概率和第二概率选择主频域资源或非主频域资源发起随机接入，第一概率与主频域资源具有对应关系，第二概率与非主频域资源具有对应关系。本申请实施例中，紧急事件触发的随机接入和其他事件触发的随机接入遵循不同的概率进行频率资源的选择。因此当主频域资源对应的概率更高时，某些紧急事件触发的随机接入有更高概率选择到主频域资源，选择到质量较好的资源，解决了目前所有事件触发的随机接入遵循相同的频率资源选择原则，使得某些紧急事件触发的随机接入时效性较差的技术问题。

Description

一种随机接入资源选择的方法以及相关装置
本申请要求于2020年7月28日提交的、中国申请号为202010736977.5、发明名称为“一种随机接入资源选择的方法以及相关装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术领域，尤其涉及一种随机接入资源选择的方法以及相关装置。
背景技术
随机接入是终端设备和网络设备之间建立无线链路的过程。在终端设备和网络设备之间随机接入完成后，终端设备和网络设备可以正常通信。在随机接入过程中，终端设备需要选择物理随机接入信道(physical random access channel，PRACH)资源，以完成随机接入。
NB-IoT和eMTC的终端设备具有低复杂度、低成本、低功耗、低带宽的特点，适用于广泛的物联网场景。例如，智能水表、智能电表、智能家居、智慧城市等。目前，5G中定义的大规模机器类型通信场景(Massive Machine Type Communications,mMTC)赢得广泛讨论和关注，其为适应5G的发展而产生，需要具备NB-IoT、eMTC终端设备的特点。
为满足为大量设备提供无线服务的需求，这类设备既支持选择锚点载波作为传输NPRACH的频域资源发起随机接入，也支持选择非锚点载波作为传输NPRACH的频域资源发起随机接入。然而，不同事件触发的随机接入遵循同样的原则选择对应的NPRACH资源，可能使得某些紧急事件触发的随机接入选择不到质量较好的资源，影响接入的时效性。
发明内容
本申请实施例提供了一种随机接入资源选择的方法以及相关装置，用于解决当前随机接入时效性较差的技术问题。
第一方面，本申请实施例提供了一种随机接入资源选择的方法，包括：终端设备获取参考信息；在确定第一参数和所述参考信息满足预设条件时，根据第一概率和第二概率选择主频域资源或非主频域资源发起随机接入，所述第一概率与所述主频域资源具有对应关系，所述第二概率与所述非主频域资源具有对应关系。本申请实施例中，对于主频域资源和非主频域资源采用不同的概率进行选择。一般地，主频域资源质量较好。因此当主频域资源对应的概率更高时，某些紧急事件触发的随机接入有更高概率选择到主频域资源，终端设备能够选择到质量较好的资源，解决了目前随机接入时效性较差的技术问题。
结合第一方面，在本申请实施例的一种实现方式中，所述主频域资源为初始部分带宽，所述非主频域资源为非初始部分带宽；或所述主频域资源为锚点载波，所述非主频域资源为非锚点载波；或所述主频域资源为第一窄带，所述非主频域资源为非第一窄带。
结合第一方面，在本申请实施例的一种实现方式中，所述参考信息包括紧急事件集合，或者，所述参考信息包括预设参数范围。
结合第一方面，在本申请实施例的一种实现方式中，所述第一参数包括当前触发随机接入的事件类型，所述预设条件包括：触发随机接入的事件类型属于所述紧急事件集合。
结合第一方面，在本申请实施例的一种实现方式中，所述第一参数包括到达业务的时延要求，所述预设条件包括：到达业务的时延要求在所述预设参数范围内。
结合第一方面，在本申请实施例的一种实现方式中，所述第一参数包括到达业务的优先级要求，所述预设条件包括：到达业务的优先级要求在所述预设参数范围内。
结合第一方面，在本申请实施例的一种实现方式中，所述紧急事件集合包括以下至少一种：无线资源控制RRC空闲态下的初始接入(Initial access from RRC_IDLE)、RRC连接重建(RRC Connection Re-establishment procedure)、在RRC连接态期间有上行或下行数据到达且下行同步状态为非同步(UL data arrival during RRC_CONNECTED when UL synchronisation status is"non-synchronised)，在RRC连接态期间有下行数据到达且没有用于调度请求的物理上行链路控制信道PUCCH(UL data arrival during RRC_CONNECTED when there are no PUCCH resources for SR available)，调度请求失败(scheduling request failure)，从RRC非激活态转换(Transition from RRC_INACTIVE)，下行数据到达且上行同步状态为非同步(DL data arrival during RRC_CONNECTED when UL synchronisation status is"non-synchronised")，同步重新配置(Request by RRC upon synchronous reconfiguration)，为辅定时提前量组建立时间对齐(Secondary Timing Advance Group)，请求其他系统消息(other SI)以及波束失败恢复(beam failure recovery)。
结合第一方面，在本申请实施例的一种实现方式中，所述根据第一概率和第二概率选择主频域资源或非主频域资源发起随机接入之前，所述方法还包括：获取各个频率资源的测量结果；根据所述测量结果确定所述第一概率和所述第二概率。结合第一方面，在本申请实施例的一种实现方式中，所述方法还包括:所述终端设备接收来自接入网设备的能力指示信息，所述能力指示信息用于指示所述终端设备在确定第一参数和所述参考信息满足预设条件时，根据第一概率和第二概率选择主频域资源或非主频域资源发起随机接入。
结合第一方面，在本申请实施例的一种实现方式中，所述根据第一概率和第二概率选择主频域资源或非主频域资源发起随机接入之前，所述方法还包括：根据第一参数是否在预设参数范围内的情况确定当前业务所属的业务类型；根据业务类型确定所述第一概率和所述第二概率。
结合第一方面，在本申请实施例的一种实现方式中，所述第一概率为预设概率P，所述第二概率的计算公式为：(1-P)*q(i)/q，其中，q(i)为第i个所述非主频域资源的相对质量，q为全部所述非主频域资源的相对质量之和，i为大于或等于1的整数。
结合第一方面，在本申请实施例的一种实现方式中，所述第一概率和所述第二概率均为q(i)/q，q(i)为第i个所述主频域资源或所述非主频域资源的相对质量，q为全部相对质量之和，i为大于或等于1的整数。
结合第一方面，在本申请实施例的一种实现方式中，所述相对质量为：参考信号接收 功率RSRP，参考信号接收质量RSRQ，信号与干扰噪声比SINR以及信号与噪声比SNR中的一种。
结合第一方面，在本申请实施例的一种实现方式中，所述参考信号包括小区参考信号CRS、同步信号块SSB、信道状态参考信号CSI-RS中的一种或多种。
另一方面，本申请实施例提供另一种随机接入资源选择的方法，该方法包括：网络设备向终端设备发送能力指示信息，所述能力指示信息用于指示所述终端设备在确定第一参数和所述参考信息满足预设条件时，根据第一概率和第二概率选择主频域资源或非主频域资源发起随机接入。并且，网络设备还可以向所述终端设备发送参考信息，所述参考信息包括紧急事件集合，或者，所述参考信息包括预设参数范围。
第二方面，本申请实施例提供一种通信装置，包括：获取模块，用于获取参考信息；所述处理模块，用于在确定第一参数和所述参考信息满足预设条件时，根据第一概率和第二概率选择主频域资源或非主频域资源发起随机接入，所述第一概率与所述主频域资源具有对应关系，所述第二概率与所述非主频域资源具有对应关系。
结合第二方面，在本申请实施例的一种实现方式中，所述主频域资源为初始部分带宽，所述非主频域资源为非初始部分带宽；或所述主频域资源为锚点载波，所述非主频域资源为非锚点载波；或所述主频域资源为第一窄带，所述非主频域资源为非第一窄带。
结合第二方面，在本申请实施例的一种实现方式中，所述参考信息包括紧急事件集合，或者，所述参考信息包括预设参数范围。
结合第二方面，在本申请实施例的一种实现方式中，所述第一参数包括当前触发随机接入的事件类型，所述预设条件包括：触发随机接入的事件类型属于所述紧急事件集合。
结合第二方面，在本申请实施例的一种实现方式中，所述第一参数包括到达业务的时延要求，所述预设条件包括：到达业务的时延要求在所述预设参数范围内。
结合第二方面，在本申请实施例的一种实现方式中，所述第一参数包括到达业务的优先级要求，所述预设条件包括：到达业务的优先级要求在所述预设参数范围内。结合第二方面，在本申请实施例的一种实现方式中，所述紧急事件集合包括以下至少一种：无线资源控制RRC空闲态下的初始接入、RRC连接重建、在RRC连接态期间有上行或下行数据到达且下行同步状态为非同步，在RRC连接态期间有下行数据到达且没有用于调度请求的物理上行链路控制信道PUCCH，调度请求失败，从RRC非激活态转换，下行数据到达且上行同步状态为非同步，同步重新配置，为定时提前量组建立时间对齐，请求其他系统消息以及波束失败恢复。
结合第二方面，在本申请实施例的一种实现方式中，所述根据第一概率和第二概率选择主频域资源或非主频域资源发起随机接入之前，所述方法还包括：获取各个频率资源的测量结果；根据所述测量结果确定所述第一概率和所述第二概率。
结合第二方面，在本申请实施例的一种实现方式中，所述处理模块，还用于：根据第一参数是否在预设参数范围内的情况确定当前业务所属的业务类型；根据业务类型确定所述第一概率和所述第二概率。
结合第二方面，在本申请实施例的一种实现方式中，所述处理装置还用于：获取各个 频率资源的测量结果；根据所述测量结果确定所述第一概率和所述第二概率。
结合第二方面，在本申请实施例的一种实现方式中，所述第一概率为预设概率P，所述第二概率的计算公式为：(1-P)*q(i)/q，其中，q(i)为第i个所述非主频域资源的相对质量，q为全部所述非主频域资源的相对质量之和，i为大于或等于1的整数。
结合第二方面，在本申请实施例的一种实现方式中，所述第一概率和所述第二概率均为q(i)/q，q(i)为第i个所述主频域资源或所述非主频域资源的相对质量，q为全部相对质量之和，i为大于或等于1的整数。
结合第二方面，在本申请实施例的一种实现方式中，所述相对质量为：参考信号接收功率RSRP，参考信号接收质量RSRQ，信号与干扰噪声比SNR以及信号与噪声比SNR中的一种。
结合第二方面，在本申请实施例的一种实现方式中，所述参考信号包括小区参考信号CRS、同步信号块SSB、信道状态参考信号CSI-RS中的一种或多种。
第三方面，本申请实施例提供一种终端设备，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，所述处理器执行所述程序时实现如第一方面的方法。
第四方面，本申请实施例提供一种计算机可读存储介质，当指令在计算机装置上运行时，使得所述计算机装置执行如第一方面的方法。
附图说明
图1为本申请实施例中随机接入资源选择的方法的示意图；
图2为本申请实施例中BWP的示意图；
图3为本申请实施例中通信系统的一种示例图；
图4为本申请实施例二提供的一种随机接入资源选择的方法的信令图；
图5为本申请实施例三提供的一种随机接入资源选择的方法的信令图；
图6为本申请实施例中主频域资源和非主频域资源的一种示例图；
图7为本申请实施例提供的一种通信装置的示意图；
图8为本申请实施例提供的一种终端设备的结构示意图。
具体实施方式
本申请实施例提供了一种随机接入资源选择的方法以及相关装置，用于解决当前随机接入时效性较差的技术问题。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“对应于”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
在本申请实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
为了下述各实施例的描述清楚简洁，首先给出相关技术的简要介绍：
随机接入(random access，RA)可以包含从终端设备发送随机接入前导码，到终端设备与网络设备间建立起基本信令连接的过程。一般地，随机接入可以包括有4步随机接入和2步随机接入。
其中，4步随机接入包括有如下4个过程：
1.终端设备发送随机接入前导码，该过程通常也称为终端设备发送MSG1的过程。
2.网络设备发送随机接入响应消息，该过程通常也称为网络设备发送MSG2的过程。
3.终端设备发送无线资源控制(radio resource control，RRC)连接请求消息，该过程通常也称为终端设备发送MSG3的过程。
4.网络设备发送RRC连接建立消息，该过程通常也称为网络设备发送MSG4的过程。
其中，2步随机接入包括有如下2个过程：
1.终端设备发送随机接入前导码以及RRC连接请求消息，该过程通常也称为终端设备发送MSGA的过程。
2.网络设备发送RRC连接建立消息，该过程通常也称为网络设备发送MSGB的过程。
其中，本申请实施例的技术方案可以应用于4步随机接入的场景，也可以应用于2步随机接入的场景，此处不做具体限定。
终端设备实现随机接入的过程中，终端设备需要选择合适的随机接入资源，以便发送随机接入前导码和RRC连接请求消息。随机接入资源，指的是终端设备在发起随机接入的过程中需要用到的资源。通常，终端设备选择随机接入资源的过程可以是：终端设备先选定锚点载波(anchor carrier)或者非锚点载波(non-anchor carrier)，再选择具体的PRACH资源。当多个载波提供相同覆盖等级的PRACH资源时，终端设备会随机选择其中一个载波作为PRACH资源，选择概率如下：给定的增强覆盖等级nprach-ProbabilityAnchor的锚点载波PRACH资源的选择概率由nprach-ProbabilityAnchorList中的相应字段给出。所有非锚点载波PRACH资源的选择概率相等，且给定非锚点载波上选择一个PRACH资源的概率为(1-nprach-ProbabilityAnchor)/(非锚点NPRACH资源的数目)。
目前终端设备选择随机接入资源时，不同事件触发的随机接入通常遵循同样的原则选择对应的随机接入资源，可能使得某些紧急事件触发的随机接入选择不到质量较好的资源，影响接入的时效性。有鉴于此，本申请实施例提供了一种随机接入资源选择的方法，如图1所示，该随机接入资源选择的方法包括：
101、终端设备获取参考信息；
在一些实施例中，终端设备可以首先获取参考信息，然后判断参考信息以及第一参数是否满足预设条件。当参考信息和第一参数满足预设条件时，终端设备可以执行步骤103。在本申请实施例中，第一参数可以是当前触发随机接入的事件类型，参考信息中可以包括 紧急事件集合，参考信息和第一参数满足预设条件可以是，触发随机接入的事件属于紧急事件集合。或者，第一参数可以是任意终端设备能够获取到的参数，例如到达业务的时延要求，到达业务的优先级要求等，本申请实施例对此不做限定。参考信息中可以包含对应的预设参数范围，例如到达业务的时延要求所对应的参数范围等，本申请实施例对此不作限定。参考信息和第一参数满足预设条件可以是，到达业务的时延要求在预设参数范围内，详细可参照后续实施例中的详细描述，此处不做赘述。
在一些实施例中，终端设备可以通过能力指示信息来确认是否执行本申请实施例提供的随机接入资源选择的方法。示例性的，终端设备接收到来自接入网设备的能力指示信息为1，则终端设备可以执行本申请实施例提供的随机接入资源选择的方法，根据第一概率和第二概率选择主频域资源或非主频域资源发起随机接入。若终端设备接收到来自接入网设备的能力指示信息为0，则终端设备不会执行本申请实施例提供的随机接入资源选择的方法。
102、终端设备确定主频域资源对应的第一概率和非主频域资源对应的第二概率；
在本申请实施例中，第一概率和第二概率可以是网络设备下发的，例如第一概率和第二概率携带在系统消息中下发；或者，第一概率和第二概率可以是协议约定的。在另一些实施例中，终端设备可以根据公式确定第一概率和第二概率。该公式可以是协议约定的，终端设备可以从自身或者与网络设备的通信中获取到相关参数，然后根据相关参数和公式确定第一概率和第二概率。在实际应用中，还有其他方式确定第一概率和第二概率，例如将第一概率和/或第二概率，或者计算第一概率和/或第二概率的相关公式预先存储在终端设备的存储介质上，本申请实施例对此不作限定。
在一些实施例中，在5G NR(5G New Radio)中，主频域资源可以是初始部分带宽(initial BWP，BWP：bandwidth part部分带宽)，非主频域资源可以是非初始部分带宽，即NR中除initial BWP外的其他BWP。
在5G通信系统中，5G通信系统支持配置部分带宽(BandWidth Part,BWP)，基站可以根据终端设备(UE)的业务数据量灵活调整带宽，以节省终端设备的功耗。当前，在RRC空闲态，基站通过系统消息配置初始部分带宽(initial BWP)用于终端设备的初始接入，当终端设备进入到RRC连接态，基站可以为UE配置多个专用部分带宽(dedicated BWP)，基站可以通过动态指示来激活UE的dedicated BWP。如图2所示，图2为本申请实施例中BWP的示意图。UE通过initial BWP接入基站，进入RRC连接态，然后基站为UE配置3个dedicated BWP，即BWP#1，BWP#2，BWP#3。
现有5G通信系统中，initial BWP可以为5MHz，10MHz，15MHz或20MHz。Dedicated BWP可以为5MHz，10MHz，15MHz，20MHz，25MHz，30MHz，40MHz，50MHz，60MHz，80MHz和100MHz。对于大量的UE接入的场景，initial BWP可能满足不了如此大量的UE同时发起初始接入，造成initial BWP过载。因此，本申请实施例提供随机接入资源选择的方法可以优化BWP的选择，使得紧急事件触发的随机接入能够选择到质量较好的BWP。
在一些实施例中，在窄带物联网(Narrow Band Internet of Things,NB-IoT)中，主频域资源可以是锚点载波(anchor carrier)，非主频域资源可以是非锚点载波 (non-anchor carrier)。
在一些实施例中，在机器类通信(Machine Type Communication，MTC)或增强的MTC(Enhanced MTC，eMTC)中，主频域资源可以是第一窄带，非主频域资源可以是其他窄带，即窄带信息中除第一窄带外的其他窄带。
可以理解的是，步骤101和步骤102可以没有顺序关系。当确定第一概率和第二概率需要用到步骤101中的参数时，步骤102一般在步骤101之后执行。
103、当参考信息和第一参数满足预设条件时，终端设备根据第一概率和第二概率确定随机接入资源；
当参考信息和第一参数满足预设条件时，终端设备可以执行步骤103。在本申请实施例中，第一参数可以是当前触发随机接入的事件类型，参考信息中可以包括紧急事件集合，参考信息和第一参数满足预设条件可以是，触发随机接入的事件属于紧急事件集合。或者，第一参数可以是任意终端设备能够获取到的参数，例如到达业务的时延要求，到达业务的优先级要求等，本申请实施例对此不做限定。参考信息中可以包含对应的预设参数范围，例如到达业务的时延要求所对应的参数范围等，本申请实施例对此不作限定。参考信息和第一参数满足预设条件可以是，到达业务的时延要求在预设参数范围内，详细可参照后续实施例中的详细描述，此处不做赘述。
在本申请实施例中，随机接入资源可以是BWP信息、载波信息或窄带信息，在实际应用中，随机接入资源还可以是其他类型，本申请实施例对此不做限定。可以理解的是，随机接入资源即从步骤102中主频域资源或非主频域资源中选择的一个或多个。
在本申请实施例中，终端设备可以采用概率选择算法，通过第一概率和第二概率，从主频域资源和非主频域资源中选择确定随机接入资源。本申请实施例对该概率选择算法不做限定。
示例性的，第一概率为1(即主频域资源的概率为100％)，第二概率为0。终端设备根据该第一概率和第二概率确定选择主频域资源作为随机接入资源。若主频域资源是initial BWP，则终端设备选择initial BWP作为随机接入资源。
示例性的，第一概率为0.7(即主频域资源的概率为70％)，非主频域资源有15个，则每个非主频域资源的第二概率为0.3/15＝0.02。终端设备可以按照主频域资源的概率为70％的情况从主频域资源和非主频域资源中选择确定随机接入资源。此时主频域资源被选择的概率较大，终端设备更倾向于选择可靠性更高的主频域资源，更容易选择到质量较好的资源，解决了当前紧急事件触发的随机接入时效性较差的技术问题。
104、终端设备根据随机接入资源进行随机接入。
在本申请实施例中，终端设备可以根据随机接入资源进行随机接入。随机接入的过程与前述的4步随机接入和2步随机接入类似，此处不再赘述。具体地，终端设备可以按照随机接入资源对应的频域/载波/窄带发送随机接入前导码或RRC连接建立请求消息。本申请实施例对此不再赘述。
本申请实施例的技术方案可以应用于各种通信系统，例如：例如码分多址(code division multiple access，CDMA)、时分多址(time division multiple access，TDMA)、 频分多址(frequency division multiple access，FDMA)、正交频分多址(orthogonal frequency-division multiple access，OFDMA)、单载波频分多址(single carrier FDMA，SC-FDMA)和其它系统等。术语“系统”可以和“网络”相互替换。例如，3GPP长期演进(long term evolution，LTE)系统和基于LTE演进的各种版本、以及第五代(5Generation，5G)通信系统、新空口(new radio，NR)等通信系统。此外，所述通信系统还可以适用于面向未来的通信技术，都适用本申请实施例提供的技术方案。本申请实施例描述的系统架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
图3为本申请实施例中通信系统的一种示例图。如图3所示，网络设备1与6个终端设备(包括终端设备1、终端设备2、终端设备3、终端设备4、终端设备5、终端设备6)组成一个通信系统。在该通信系统中，终端设备和网络设备1建立连接后，终端设备可以发送上行数据给网络设备1，网络设备1可以接收终端设备发送的上行数据。另一方面，终端设备和网络设备1建立连接后，网络设备1可以发送下行数据给终端设备，终端设备可以接收基站发送的下行数据。网络设备1和网络设备2通信连接，用于与其他通信系统进行通信。
在本申请实施例中，终端设备又称之为用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等，是一种向用户提供语音和/或数据连通性的设备，或，设置于该设备内的芯片，例如，具有无线连接功允许的手持式设备、车载设备等。目前，一些终端设备的举例为：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。
网络设备(包括网络设备1和网络设备2)可以是任意一种具有无线收发功能的设备，或，设置于具体无线收发功能的设备内的芯片。网络设备包括但不限于：基站(例如基站BS,基站NodeB、演进型基站eNodeB或eNB、第五代5G通信系统中的基站gNodeB或gNB、未来通信系统中的基站、WiFi系统中的接入节点、无线中继节点、无线回传节点)等。基站可以是：宏基站，微基站，微微基站，小站，中继站等。多个基站可以支持上述提及的一种或者多种技术的网络，或者未来演进网络。基站可以包含一个或多个共站或非共站的传输接收点(transmission reception point，TRP)。网络设备还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器、集中单元(central unit，CU)或者分布单元(distributed unit，DU)等。以下以网络设备为基站为例进行说明。所述多个网络设备可以为同一类型的基站，也可以为不同类型的基站。基站可以与终端设备进行通信，也可以通过中继站与终端设备进行通信。终端设备可以支持与不同技术的多 个基站进行通信，例如，终端设备可以支持与支持LTE网络的基站通信，也可以支持与支持5G网络的基站通信，还可以支持与LTE网络的基站以及5G网络的基站的双连接。例如将终端设备接入到无线网络的RAN节点。目前，一些RAN节点的举例为：gNB、TRP、演进型节点B(evolved Node B，eNB)、下一代演进型节点B(next generation evolved Node B，LTE ng-eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station,BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(base band unit，BBU)，或Wifi接入点(access point，AP)等。在图3的示例中，网络设备1可以是基站类型的网络设备，网络设备2可以是核心网设备类型的网络设备。
实施例一
终端设备可以根据实际情况选择合适的随机接入资源来进行随机接入。选择随机接入资源的过程与前述图1对应的实施例类似。其中，步骤101中的参考信息包括紧急事件集合，该紧急事件集合包括：无线资源控制RRC空闲态下的初始接入、RRC连接重建、在RRC连接态期间有上行或下行数据到达且下行同步状态为非同步，在RRC连接态期间有下行数据到达且没有用于调度请求的物理上行链路控制信道PUCCH，调度请求失败，从RRC非激活态转换，切换，下行数据到达且上行同步状态为非同步，同步重新配置，在添加辅服务小区时建立时间对齐，请求特定系统消息以及光束恢复中的一种或多种。
上述的紧急事件包括竞争随机接入的场景和非竞争随机接入的场景。以下竞争随机接入的场景进行详细的描述：
1、RRC空闲态下的初始接入(Initial access from RRC_IDLE)；
此时RRC层的状态为RRC_IDLE，终端设备需要连接设置请求(CONNECTION SETUP REQUEST)，而网络设备1无法知道，因此需要触发终端设备执行竞争随机接入过程。
2、RRC连接重建(RRC Connection Re-establishment procedure)；
RRC连接重建的原因有多种，比如终端设备侧的无线链路层控制协议(radio link control，RLC)上行重传达到最大次数，就会触发重建，此时网络设备1也不知道终端设备的重建状态，也需要触发终端设备执行竞争随机接入过程。
3、在RRC连接态期间有上行或下行数据到达且下行同步状态为非同步(UL data arrival during RRC_CONNECTED when UL synchronisation status is"non-synchronised")；
上行失步，终端设备发送数据(例如：需要上报测量报告或发送用户数据)时，上行处于“不同步”状态。这个情况与初始接入类似，网络设备1无法知道终端设备什么时候有上行业务要做，因此需要触发终端设备执行竞争随机接入过程。
4、在RRC连接态期间有下行数据到达且没有用于调度请求的物理上行链路控制信道PUCCH(UL data arrival during RRC_CONNECTED when there are no PUCCH resources for SR available)；
如果终端设备没有上行调度准许信息(UL_GRANT)用于发送缓冲区状态报告(Buffer Status Report，BSR)，终端设备会通过上行调度请求(Scheduling Request，SR)发送上 行资源申请，但如果也没有SR资源，则只能通过竞争接入过程申请UL_GRANT。此时，网络设备1显然也不知道终端设备是否有上行数据发送。这两种情况只能基于竞争的随机接入。
5、调度请求失败(scheduling request failure)；
SR发送失败后，终端设备同样需要进行竞争的随机接入。
6、从RRC非激活态转换(Transition from RRC_INACTIVE)；
终端设备主动触发状态迁移时，采用竞争的随机接入过程。网络设备1通过RAN Paging触发INACTIVE到CONNECTED状态迁移时，由于Paging中并不会携带随机接入信道(random access channel，RACH)资源，同样是基于竞争的RA过程。
以下对非竞争随机接入场景进行详细的描述(可以理解的是，如果非竞争接入过程中，网络设备1发现没有了非竞争资源，此时也会转到竞争接入过程)。
7、切换(handover)；
切换是由网络设备侧发起的，因此优先执行非竞争接入过程。
8、下行数据到达且上行同步状态为非同步(DL data arrival during RRC_CONNECTED when UL synchronisation status is"non-synchronised")；
下行数据到达(此时需要回复ACK/NACK)时，上行处于“不同步”状态，网络设备侧可以由MAC和RRC配合处理，优先执行非竞争接入过程。当没有专用前导可用时，触发基于竞争的随机接入过程。
9、同步重新配置(Request by RRC upon synchronous reconfiguration)；
RRC信令reconfigurationWithSync中带有专用的RACH资源，以利用非竞争的随机接入。
10、为辅定时提前量组(Secondary Timing Advance Group)建立时间对齐；
在5G NR系统中，在Scell添加时触发RACH流程。
11、请求其他系统消息(Request for Other SI)；
终端设备需要请求特定SI时会发起RA。当SIB1消息中si-SchedulingInfo字段包括si-RequestConfig或者si-RequestConfigSUL此时终端设备会基于非竞争的场景，使用Msg1通知网络侧获取系统消息。相反终端设备会基于竞争的场景，使用Msg3来发送SI请求消息。
12、波束失败恢复(beam failure recovery)；
检测到beam failure之后，终端设备首先在PCell上通过发起随机接入流程来触发beam failure恢复流程，然后选择一个合适的beam来执行beam failure恢复流程。如果网络设备1提供专用的Random Access资源，则优先执行非竞争的随机接入。当完成随机接入流程之后，同时也认为完成了beam failure恢复流程。
此外，在LTE系统中，终端设备执行定位过程时，终端设备可以进行非竞争随机接入。
可以理解的是，上述场景时，当终端设备需要进行竞争/非竞争随机接入时，可以采用如本申请各个实施例中的方法来选择随机接入资源。也可以说，当上述事件触发随机接入时，终端设备可以根据本申请各个实施例中的方法选择随机接入资源，然后根据选择好的 随机接入资源进行随机接入。
当终端设备检测到相关参数符合上述紧急事件集合的情况时，终端设备可以认为参考信息和第一参数满足预设条件。其中，第一参数可以是当前触发随机接入的事件类型，参考信息中可以包括紧急事件集合。当前触发随机接入的事件类型符合紧急事件集合中的任意一个紧急事件时，即满足预设条件。
上述紧急事件仅仅是本申请实施例的一些示例，在实际应用中，终端设备和网络设备1还可以约定其他事件作为紧急事件，本申请实施例对此不做限定。
上述的紧急事件集合可以包含在参考信息中。终端设备可以通过获取参考信息从而获取到上述的紧急事件集合。
在一些实施例中，终端设备和网络设备可以预先约定(通过协议或信息交互等方式)紧急事件集合，当终端设备监测到当前发生的事件属于预先约定的紧急事件集合时，终端设备确定满足第一预设条件，按照第一概率和第二概率选择随机接入资源。
在一些实施例中，终端设备可以预先获取参考信息，参考信息中包含预先约定的紧急事件集合。当终端设备监测到当前发生的事件属于预先约定的紧急事件集合时，终端设备确定满足第一预设条件，按照第一概率和第二概率选择随机接入资源。
其中，终端设备监测到当前发生的事件是否属于预先约定的紧急事件集合的方式可以是，终端设备获取当前事件日志，并逐条查看日志中的事件是否属于紧急事件集合中的其中一个事件。在实际应用中，还可能存在其他监测方式，本申请实施例对此不做限定。
在本申请实施例中，终端设备获取的参考信息可以包括紧急事件集合，第一参数包括当前触发随机接入的事件类型，预设条件包括：触发随机接入的事件类型属于所述紧急事件集合。或者，终端设备获取的参考信息可以包括预设参数范围，所述第一参数包括到达业务的时延要求，所述预设条件包括：到达业务的时延要求在所述预设参数范围内。或者，终端设备获取的参考信息可以包括预设参数范围，所述第一参数包括到达业务的优先级要求，所述预设条件包括：到达业务的优先级要求在所述预设参数范围内。如实施例二
实施例二
图4为本申请实施例二提供的一种随机接入资源选择的方法的信令图。该方法包括步骤：
201、终端设备获取参考信息中的预设参数范围；
在本申请实施例中，终端设备可以是接收到指令后获取参考信息并进行随机接入资源选择，或者是终端设备接收到参考信息后触发随机接入资源选择，本申请实施例对此不做限定。
参考信息可以是网络设备(如基站或核心网设备)下发的，也可以是协议约定的。示例性的，图3对应的示例中，网络设备1可以向终端设备下发参考信息。
在本申请实施例中，参考信息可以包括预设参数范围。该预设参数范围可以由参数最大值或参数最小值确定，也可以是业务类型的门限值来确定。其中，门限值的含义是若当前业务的指定参数大于该门限值，则当前业务属于业务类型A；若，当前业务的指定参数小于等于该门限值，则当前业务属于业务类型B。门限值可以是例如优先级(Priority  Level)门限、时延(Packet Delay Budget)门限中的至少一种。在实际应用中，预设参数范围还可以根据实际情况选择不同类型，例如指定为数据丢包率门限等其他参数阈值，本申请实施例对此不做限定。
另一方面，预设参数范围也可以直接是对应参数范围，例如时延100ms～300ms。若当前业务的指定参数在该参数范围内，则当前业务属于业务类型A，若当前业务的指定参数不在该参数范围内，则当前业务属于业务类型B。
在一些实施例中，参考信息还可以包括紧急事件集合，终端设备可以从参考信息中获取到紧急事件集合。终端设备可以监测当前发生的事件是否属于预先约定的紧急事件集合。若是，则终端设备可以确定满足第一预设条件，按照第一概率和第二概率选择随机接入资源。
当参考信息中同时包括紧急事件集合和预设参数范围时，终端设备可以先判断当前事件是否属于紧急事件集合。若是，再根据指定参数确定对应的业务类型，从而根据业务类型对应的概率值选择主频域资源或非主频域资源发起随机接入。
在另一些实施例中，参考信息还可以包括每个频域资源的测量结果。每个频域资源的测量结果用于计算第一概率和第二概率。另一些情况中，测量结果也可以不包含在参考信息中，而是用另外的方式获取，本申请实施例对此不做限定。
202、终端设备根据当前业务的指定参数和预设参数范围确定对应的业务类型；
在本申请实施例中，终端设备可以根据当前业务的指定参数(也可以称为第一参数，例如可以包括到达业务的时延要求、到达业务的优先级要求等)和步骤201中获取到的预设参数范围来确定对应的业务类型。
以时延门限和优先级门限为例，示例性的，当到达业务的时延要求小于等于上述时延门限，终端设备确定该业务属于第一类型业务，当到达业务的时延要求大于上述时延门限，终端设备确定该业务属于第二类型业务。或者，当到达业务的优先级大于等于上述优先级门限，终端设备确定该业务属于第一类型业务，当到达业务的优先级小于上述优先级门限，终端设备确定该业务属于第二类型业务。
示例性的，在LTE通信系统中，终端设备可以根据EPS QoS质量特征(QCI)来判断对应业务属于第一类型业务还是第二类型业务。表1为本申请实施例中QCI的示例。在表1中，例如当前的到达业务为语音会话(conversational voice)，对应的时延要求为100ms。终端设备获取到的预设参数范围中，时延门限为150ms，则终端设备确定该业务(语音会话)为第一类型业务。
表1
QCI 优先级 时延要求 业务例子
1 2 100ms 语音会话
2 4 150ms 视频会话(实况流业务)
… … … …
示例性的，在5G NR通信系统中，终端设备可以根据5G QoS质量特征(5QI)来判断对应业务属于第一类型业务还是第二类型业务。表2为本申请实施例中5QI的示例。在表2 中，例如当前的到达业务为语音会话(conversational voice)，对应的时延为100ms。终端设备获取到的预设参数范围中，时延门限为150ms，则当前业务的指定参数(时延100ms)小于门限值(时延门限150ms)终端设备确定该业务(语音会话)为第一类型业务。
表2
5QI Value QoS Flow间资源调度优先级 时延 业务例子
1 20 100ms 语音会话
2 40 150ms 视频会话(实况流业务)
… … … …
需要说明的是，表2中，QoS Flow间资源调度优先级(Default Priority Level)用于区分一个终端设备内或不同终端设备间QoS Flow优先级，值越小表示优先级越高，取值为1～127。表2中，时延(Packet Delay Budget)表示终端设备到核心网(UPF)的时延。
在一些实施例中，终端设备可以结合多个指定参数以及预设参数范围来共同确定对应的业务类型。示例性的，当到达业务的时延要求小于等于上述时延门限且到达业务的优先级大于等于上述优先级门限时，终端设备确定该业务属于第一类型业务。当到达业务的时延要求小于等于上述时延门限且到达业务的优先级小于上述优先级门限时，终端设备确定该业务属于第二类型业务。当到达业务的时延要求大于上述时延门限且到达业务的优先级大于等于上述优先级门限时时，终端设备确定该业务属于第三类型业务。当到达业务的时延要求大于上述时延门限且到达业务的优先级小于上述优先级门限时，终端设备确定该业务属于第四类型业务。如表3所示，表3为判定条件与业务类型的对应关系示例。
表3
Figure PCTCN2021093008-appb-000001
在实际应用中还可能存在其他情况和对应的业务类型，本申请实施例对此不做限定。
203、终端设备根据业务类型确定主频域资源对应的第一概率和非主频域资源对应的第二概率；
在本申请实施例中，终端设备可以根据步骤302中获取到的业务类型来确定主频域资源对应的第一概率和非主频域资源对应的第二概率。可以理解的是，步骤302得到的业务类型与第一概率、第二概率之间存在对应关系。该对应关系可以是表格形式，也可以是公式形式。在实际应用中，还可以是其他形式，本申请实施例对此不做限定。
示例性的，在一些情况中，以表格形式表示的一种示例如表4所示，表4为业务类型与第一概率、第二概率之间的对应关系的表格示例。在表4中，P1～P8都是预先设定的概 率，根据实际需要的情况进行读取即可。
表4
业务类型 第一概率 第二概率
第一类型业务 P1 P2
第二类型业务 P3 P4
第三类型业务 P5 P6
第四类型业务 P7 P8
… … …
示例性的，在另一些情况中，以表格形式表示的一种示例如表5所示，表5为业务类型与第一概率、第二概率之间的另一种对应关系的表格示例。表5中，P为预设的概率，q(i)为第i个所述主频域资源或所述非主频域资源的相对质量，q为全部相对质量之和，i为大于或等于1的整数，P5～P6为预设的概率。终端设备确定业务类型后，根据对应的公式计算出第一概率和第二概率即可。在一些情况下，若终端设备确定业务类型为第四类型业务，则终端设备可以按照传统方式选择随机接入资源发起随机接入，因而第四类型业务没有对应的第一概率和第二概率。
表5
业务类型 第一概率 第二概率
第一类型业务 P (1-P)*q(i)/q
第二类型业务 q(i)/q q(i)/q
第三类型业务 P5 P6
第四类型业务 XX XX
… … …
204、终端设备根据第一概率和第二概率确定随机接入资源；
在本申请实施例中，步骤204与前述图1对应的各个实施例中步骤103类似，本申请实施例对此不做赘述。
205、终端设备根据随机接入资源进行随机接入。
在本申请实施例中，步骤205与前述图1对应的各个实施例中步骤104类似，本申请实施例对此不做赘述。
在本申请实施例二中，终端设备先判断当前业务属于何种业务，参考该业务的时延和优先级要求，再确定第一概率和第二概率，使得本申请中的随机接入资源选择的方法能够适应各种业务，并且能够同时根据多种业务的不同需求进行不同的概率分配，使得随机接入资源选择的方法能够满足多种业务的终端设备的时效性需求。
实施例三
图5为本申请实施例三提供的一种随机接入资源选择的方法的信令图。该方法包括步骤：
301、终端设备获取每个频域资源的测量结果。
在一些实施例中，终端设备可以获取参考信息，参考信息中可以包括每个频域资源的 测量结果。终端设备获取参考信息后，可以从参考信息中提取每个频域资源的测量结果。
在本申请实施例中，终端设备可以通过针对每个频域资源进行测量，得到对应的测量结果。例如，终端设备可以对下行参考信号进行测量，得到下行参考信号的测量结果。
示例性的，终端设备可以通过测量接入网设备发送的参考信号获取测量结果，参考信号可以包括以下至少一项：小区参考信号(cell-specific reference signal，CRS)、同步信号块(synchronization signal block，SSB)和信道状态参考信号(channel state information reference signal，CSI-RS。测量结果可以包括以下至少一项：参考信号接收功率(reference signal received power,RSRP)、参考信号接收质量(reference signal received quality,RSRQ)、信号与干扰噪声比(signal interference noise ratio,SINR)、或者信号与噪声比(signal noise ratio,SNR)等。
在实际应用中，终端设备还可能对其他参考信号测量得到其他类型的测量结果，本申请实施例对此不做限定。
上述的测量结果可以是一次性的测量结果，也可以是周期性的测量结果。例如，终端设备可以设定预设时间间隔，即每隔一段时间进行一个周期的测量，从而得到周期性的测量结果。
302、终端设备确定主频域资源对应的第一概率和非主频域资源对应的第二概率；
在本申请实施例中，终端设备可以根据步骤201得到的测量结果确定主频域资源对应的第一概率和非主频域资源对应的第二概率。可以理解的是，步骤201得到的测量结果与第一概率、第二概率之间存在对应关系。该对应关系可以是列表形式，也可以是公式形式。在实际应用中，还可以是其他形式，本申请实施例对此不做限定。
在一种情况中，终端设备仅scaling其他频率资源被选中的概率，则对应关系可以用公式表示为：
1.主频域资源被选中的概率(第一概率):P；
2.其他频域资源被选中的概率(第二概率):(1-P)*q(i)/q；
其中，P为预设的概率，q(i)为第i个所述非主频域资源的相对质量，q为全部所述非主频域资源的相对质量之和，i为大于或等于1的整数。
示例性的，图6为本申请实施例中主频域资源和非主频域资源的一种示例图。其中，主频域资源预设的P为50％，其他频域资源的相对质量可以用测量结果中的RSRP的相对值来表示。其他频域资源包括频域资源1、频域资源2、频域资源3，其中，频域资源1的相对质量q(1)＝1，频域资源2的相对质量q(2)＝2，频域资源3的相对质量q(3)＝3。全部非主频域资源的相对质量之和为q＝q(1)+q(2)+q(3)＝6。那么，频域资源1对应的第二概率为P(1)＝(1-P)*q(1)/q＝(1-50％)*1/6＝1/12＝8.33％。频域资源2对应的第二概率为P(2)＝(1-P)*q(2)/q＝(1-50％)*2/6＝2/12＝16.66％。频域资源3对应的第二概率为P(3)(1-P)*q(3)/q＝(1-50％)*3/6＝3/12＝25％。上述相对质量可以根据RSRP的实际数值或者相关参数来计算得到，本申请实施例对此不做限定。
在另一种情况中，终端设备使用频域资源对应的测量结果缩放所有频率资源被选中的概率，则对应关系可以用公式表示为：
1.主频域资源被选中的概率(第一概率):q(i)/q；
2.其他频域资源被选中的概率(第二概率):q(i)/q；
其中，q(i)为第i个所述主频域资源或所述非主频域资源的相对质量，q为全部相对质量之和，i为大于或等于1的整数。
使用本步骤中介绍的确定第一概率和第二概率的方法，测量结果较好的频率资源，说明该频率资源的质量较好，对应的被选中的的概率较高，相对的，测量结果较差的频率资源，说明该频率资源的质量较差，被选中的概率较低。在实际应用中，为达到此目的，终端设备还可以另外设定其他符合具体应用场景的公式，本申请实施例对此不做限定。
303、终端设备根据第一概率和第二概率确定随机接入资源；
在本申请实施例中，步骤303与前述图1对应的各个实施例中步骤103类似，本申请实施例对此不做赘述。
304、终端设备根据随机接入资源进行随机接入。
在本申请实施例中，步骤304与前述图1对应的各个实施例中步骤104类似，本申请实施例对此不做赘述。
在本申请实施例三中，终端设备接收到测量结果后触发随机接入资源选择，或者是终端设备接收到指令后进行测量，得到测量结果，或者是终端设备定时进行测量。本申请实施例对此不做限定。
图7为本申请实施例提供的一种通信装置的示意图。该通信装置700包括：
获取模块701、处理模块702。该通信装置700可为上述图1、图4、图5所示的方法实施例中的终端设备。
其中，获取模块701可用于执行如上述图1对应的各个实施例中的步骤101或其他相关步骤，或执行上述图4所示的方法实施例中的步骤201或其他相关步骤，或执行上述图5所示的方法实施例中的步骤301或其他相关步骤；
处理模块702，可用于执行如上述图1对应的各个实施例中的步骤102、步骤103、步骤104或其他相关步骤，或执行上述图4所示的方法实施例中的步骤202、步骤203、步骤204或其他相关步骤，或执行上述图5所示的方法实施例中的步骤302、步骤303、步骤304、步骤305或其他相关步骤；
应理解，该通信装置700对应于上述方法实施例中的终端设备，通信装置700中的各单元和上述其他操作和/或功能分别为了实现上述图1所示的方法中的终端设备或图5所示的方法中的终端设备或图4所示的方法中的终端设备所实施的各种步骤和方法，具体细节可参见上述方法实施例，为了简洁，在此不再赘述。
图8为本申请实施例提供的一种终端设备800的结构示意图。该终端设备800可适用于图3所示出的系统中，执行上述方法实施例中终端设备的功能。为了便于说明，图8仅示出了终端设备的主要部件。如图8所示，终端设备800包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对整个终端设备进行控制，执行软件程序，处理软件程序的数据，例如用于支持终端设备执行上述方法实施例中所描述的动作，如接收唤醒信号的使用门限，根据该使用门限和eDRX周期 确定是否监听唤醒信号。存储器主要用于存储软件程序和数据，例如存储上述实施例中所描述唤醒信号的使用门限等。控制电路主要用于基带信号与射频信号的转换以及对射频信号的处理。控制电路和天线一起也可以叫做收发器，主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
当终端设备开机后，处理器可以读取存储单元中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解，为了便于说明，图8仅示出了一个存储器和一个处理器。在实际的终端设备中，可以存在多个处理器和多个存储器。存储器也可以称为存储介质或者存储设备等，本申请实施例对此不做限定。
作为一种可选的实现方式，处理器可以包括基带处理器和/或中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端设备进行控制，执行软件程序，处理软件程序的数据。图8中的处理器可以集成基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端设备可以包括多个基带处理器以适应不同的网络制式，终端设备可以包括多个中央处理器以增强其处理能力，终端设备的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。
在本申请实施例中，可以将具有收发功能的天线和控制电路视为终端设备800的收发器801，例如，用于支持终端设备执行前述的接收功能和发送功能。将具有处理功能的处理器视为终端设备800的处理器802。如图8所示，终端设备800包括收发器801和处理器802。收发器也可以称为收发机、收发装置等。可选的，可以将收发器801中用于实现接收功能的器件视为接收单元，将收发器801中用于实现发送功能的器件视为发送单元，即收发器801包括接收单元和发送单元，接收单元也可以称为接收机、输入口、接收电路等，发送单元可以称为发射机、发射器或者发射电路等。
处理器802可用于执行该存储器存储的指令，以控制收发器801接收信号和/或发送信号，完成上述方法实施例中终端设备的功能。作为一种实现方式，收发器801的功能可以考虑通过收发电路或者收发的专用芯片实现。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通 过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (20)

  1. 一种随机接入资源选择的方法，其特征在于，包括：
    终端设备获取参考信息；
    所述终端设备在确定第一参数和所述参考信息满足预设条件时，根据第一概率和第二概率选择主频域资源或非主频域资源发起随机接入，所述第一概率与所述主频域资源具有对应关系，所述第二概率与所述非主频域资源具有对应关系。
  2. 根据权利要求1所述的方法，其特征在于，
    所述主频域资源为初始部分带宽，所述非主频域资源为非初始部分带宽；或
    所述主频域资源为锚点载波，所述非主频域资源为非锚点载波；或
    所述主频域资源为第一窄带，所述非主频域资源为非第一窄带。
  3. 根据权利要求1所述的方法，其特征在于，所述参考信息包括紧急事件集合，
    或者，所述参考信息包括预设参数范围。
  4. 根据权利要求1至3任意一项所述的方法，其特征在于，所述第一参数包括当前触发随机接入的事件类型，所述预设条件包括：
    触发随机接入的事件类型属于所述紧急事件集合。
  5. 根据权利要求1至3任意一项所述的方法，其特征在于，所述第一参数包括到达业务的时延要求，所述预设条件包括：
    到达业务的时延要求在所述预设参数范围内。
  6. 根据权利要求1至3任意一项所述的方法，其特征在于，所述第一参数包括到达业务的优先级要求，所述预设条件包括：
    到达业务的优先级要求在所述预设参数范围内。
  7. 根据权利要求4所述的方法，其特征在于，所述紧急事件集合包括以下事件中的至少一种：无线资源控制RRC空闲态下的初始接入、RRC连接重建、在RRC连接态期间有上行或下行数据到达且下行同步状态为非同步，在RRC连接态期间有下行数据到达且没有用于调度请求的物理上行链路控制信道PUCCH，调度请求失败，从RRC非激活态转换，下行数据到达且上行同步状态为非同步，同步重新配置，为辅定时提前量组建立时间对齐，请求其他系统消息以及波束失败恢复。
  8. 根据权利要求1至7任意一项所述的方法，其特征在于，所述根据第一概率和第二概率选择主频域资源或非主频域资源发起随机接入之前，所述方法还包括：
    获取各个频率资源的测量结果；
    根据所述测量结果确定所述第一概率和所述第二概率。
  9. 根据权利要求1至8所述的方法，其特征在于，所述方法还包括:
    所述终端设备接收来自接入网设备的能力指示信息，所述能力指示信息用于指示所述终端设备在确定所述第一参数和参考信息满足预设条件时，根据第一概率和第二概率选择主频域资源或非主频域资源发起随机接入。
  10. 一种通信装置，其特征在于，包括：
    获取模块，用于获取参考信息；
    所述处理模块，用于在确定第一参数和所述参考信息满足预设条件时，根据第一概率和第二概率选择主频域资源或非主频域资源发起随机接入，所述第一概率与所述主频域资源具有对应关系，所述第二概率与所述非主频域资源具有对应关系。
  11. 根据权利要求10所述的装置，其特征在于，
    所述主频域资源为初始部分带宽，所述非主频域资源为非初始部分带宽；或
    所述主频域资源为锚点载波，所述非主频域资源为非锚点载波；或
    所述主频域资源为第一窄带，所述非主频域资源为非第一窄带。
  12. 根据权利要求10所述的装置，其特征在于，所述参考信息包括紧急事件集合，
    或者，所述参考信息包括预设参数范围。
  13. 根据权利要求10至12任意一项所述的装置，其特征在于，所述第一参数包括当前触发随机接入的事件类型，所述预设条件包括：
    触发随机接入的事件类型属于所述紧急事件集合。
  14. 根据权利要求10至12任意一项所述的装置，其特征在于，所述第一参数包括到达业务的时延要求，所述预设条件包括：
    到达业务的时延要求在所述预设参数范围内。
  15. 根据权利要求10至12任意一项所述的装置，其特征在于，所述第一参数包括到达业务的优先级要求，所述预设条件包括：
    到达业务的优先级要求在所述预设参数范围内。
  16. 根据权利要求13任意一项所述的装置，其特征在于，所述紧急事件集合包括以下至少一种：无线资源控制RRC空闲态下的初始接入、RRC连接重建、在RRC连接态期间有上行或下行数据到达且下行同步状态为非同步，在RRC连接态期间有下行数据到达且没有用于调度请求的物理上行链路控制信道PUCCH，调度请求失败，从RRC非激活态转换，下行数据到达且上行同步状态为非同步，同步重新配置，为定时提前量组建立时间对齐，请求其他系统消息以及波束失败恢复。
  17. 根据权利要求10至16任意一项所述的装置，其特征在于，所述处理装置还用于：
    获取各个频率资源的测量结果；
    根据所述测量结果确定所述第一概率和所述第二概率。
  18. 根据权利要求10至17任意一项所述的装置，其特征在于，所述获取模块还用于：接收来自接入网设备的能力指示信息，所述能力指示信息用于指示所述所述终端设备在确定第一参数和所述参考信息满足预设条件时，根据第一概率和第二概率选择主频域资源或非主频域资源发起随机接入。
  19. 一种终端设备，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，其特征在于，所述处理器执行所述程序时实现权利要求1至9中任一项所述的方法。
  20. 一种计算机可读存储介质，其特征在于，当指令在计算机装置上运行时，使得所述计算机装置执行如权利要求1至9任一所述的方法。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024138395A1 (en) * 2022-12-27 2024-07-04 Nec Corporation Device and method of communication

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023197847A1 (zh) * 2022-04-12 2023-10-19 华为技术有限公司 通信方法和装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107734687A (zh) * 2016-08-12 2018-02-23 中兴通讯股份有限公司 一种获取网络系统资源配置方法、终端、网络设备及系统
CN108289329A (zh) * 2017-01-09 2018-07-17 北京三星通信技术研究有限公司 随机接入的方法及基站设备、用户设备
US20180242365A1 (en) * 2016-08-12 2018-08-23 Telefonaktiebolaget Lm Ericsson (Publ) Load Distribution for Random Access
CN110856267A (zh) * 2018-08-20 2020-02-28 华为技术有限公司 一种通信方法及设备

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10681684B2 (en) * 2016-07-18 2020-06-09 Qualcomm Incorporated Multi-PRB paging/random access for NB-IoT
WO2019092196A1 (en) * 2017-11-13 2019-05-16 Telefonaktiebolaget Lm Ericsson (Publ) Implicit temporal network access load distribution

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107734687A (zh) * 2016-08-12 2018-02-23 中兴通讯股份有限公司 一种获取网络系统资源配置方法、终端、网络设备及系统
US20180242365A1 (en) * 2016-08-12 2018-08-23 Telefonaktiebolaget Lm Ericsson (Publ) Load Distribution for Random Access
CN108289329A (zh) * 2017-01-09 2018-07-17 北京三星通信技术研究有限公司 随机接入的方法及基站设备、用户设备
CN110856267A (zh) * 2018-08-20 2020-02-28 华为技术有限公司 一种通信方法及设备

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CATT: "Report of email discussion [95bis#25] [LTE/NB-IoT] RACH on non-anchor", 3GPP DRAFT; R2-168156_REPORT OF EMAIL DISCUSSION [95BIS#25][NB-IOT] RACH ON NON-ANCHOR, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Reno, USA; 20161114 - 20161118, 13 November 2016 (2016-11-13), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051177840 *
See also references of EP4184968A4

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024138395A1 (en) * 2022-12-27 2024-07-04 Nec Corporation Device and method of communication

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