WO2020093403A1 - Procédé et appareil d'accès aléatoire, terminal et station de base - Google Patents

Procédé et appareil d'accès aléatoire, terminal et station de base Download PDF

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Publication number
WO2020093403A1
WO2020093403A1 PCT/CN2018/114925 CN2018114925W WO2020093403A1 WO 2020093403 A1 WO2020093403 A1 WO 2020093403A1 CN 2018114925 W CN2018114925 W CN 2018114925W WO 2020093403 A1 WO2020093403 A1 WO 2020093403A1
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WIPO (PCT)
Prior art keywords
carrier
message
frequency domain
domain resource
configuration information
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PCT/CN2018/114925
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English (en)
Chinese (zh)
Inventor
徐伟杰
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Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2018/114925 priority Critical patent/WO2020093403A1/fr
Priority to CN201880096317.6A priority patent/CN112534946A/zh
Publication of WO2020093403A1 publication Critical patent/WO2020093403A1/fr

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/08Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]

Definitions

  • the embodiments of the present application relate to the technical field of mobile communications, and in particular to a random access method and device, terminal, and base station.
  • One way of the random access process is to use a contention-based four-step random access process.
  • MSG1 and MSG3 need to be sent on the same uplink carrier in the same cell, and the uplink (UpLink, UL) bandwidth part (BandWidth Part, BWP) used to transmit MSG3 is signaled by higher layers
  • the configuration for the terminal is uniquely determined in advance. This mechanism is available in authorized frequency bands, but in unlicensed frequency bands, when the terminal finishes sending MSG1 and the network side replies to MSG2, the pre-configured carrier for sending MSG3 may be in a state occupied by other devices.
  • the terminal will not be able to successfully send MSG3 to the base station, even if there are other idle channels at this time. At this time, the terminal will not be able to successfully send MSG3 according to the scheduling information of MSG2, resulting in the prolonged random access process.
  • Embodiments of the present application provide a random access method and device, terminal, and base station.
  • the terminal obtains the configuration information of M downlink carriers and the configuration information of N uplink carriers, M and N are positive integers;
  • the terminal sends a first message on a first carrier and receives a second message on a second carrier, the second message includes uplink scheduling information for a third message, and the uplink scheduling information for the third message indicates the
  • the third message is transmitted on the third carrier; wherein, the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.
  • the base station configures the configuration information of M downlink carriers and N uplink carriers for the terminal, M and N are positive integers;
  • the base station receives the first message on the first carrier and sends the second message on the second carrier.
  • the second message includes uplink scheduling information for the third message, and the uplink scheduling information for the third message indicates
  • the third message is transmitted on a third carrier; wherein, the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.
  • the obtaining unit is used to obtain the configuration information of M downlink carriers and the configuration information of N uplink carriers, M and N are positive integers;
  • a random access unit configured to send a first message on a first carrier and receive a second message on a second carrier, where the second message includes uplink scheduling information for a third message, and uplink scheduling for the third message
  • the information indicates that the third message is transmitted on a third carrier; wherein, the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.
  • the configuration unit is used to configure M downlink carrier configuration information and N uplink carrier configuration information for the terminal, M and N are positive integers;
  • the random access unit is configured to receive the first message on the first carrier and send the second message on the second carrier, where the second message includes uplink scheduling information for the third message and the uplink of the third message
  • the scheduling information indicates that the third message is transmitted on the third carrier; wherein, the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.
  • the terminal provided by the embodiment of the present application includes a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the random access method described above.
  • the base station provided by the embodiment of the present application includes a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the random access method described above.
  • the chip provided in the embodiment of the present application is used to implement the foregoing random access method.
  • the chip includes a processor for calling and running a computer program from the memory, so that the device installed with the chip executes the random access method described above.
  • the computer-readable storage medium provided by the embodiments of the present application is used to store a computer program, and the computer program enables the computer to execute the foregoing random access method.
  • the computer program product provided by the embodiment of the present application includes computer program instructions, and the computer program instructions cause the computer to execute the foregoing random access method.
  • the computer program provided by the embodiment of the present application causes the computer to execute the above-mentioned random access method when it runs on the computer.
  • the probability of successful transmission of MSG3 is increased to ensure that the terminal can successfully transmit MSG3.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a four-step random access process provided by an embodiment of this application.
  • FIG. 3 is a first schematic flowchart of a random access method provided by an embodiment of this application.
  • FIG. 5 is a schematic structural diagram 1 of a random access device provided by an embodiment of this application.
  • FIG. 6 is a schematic structural diagram 2 of a random access device provided by an embodiment of this application.
  • FIG. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • GSM Global System of Mobile
  • CDMA Code Division Multiple Access
  • WCDMA Broadband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access, WiMAX
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or referred to as a communication terminal, terminal).
  • the network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminals located within the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or a wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks or network devices in future public land mobile networks (Public Land Mobile Network, PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNodeB evolved base station in an LTE system
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, an in-veh
  • the communication system 100 also includes at least one terminal 120 located within the coverage of the network device 110.
  • terminals include but are not limited to connections via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Lines (DSL), digital cables, and direct cable connections; And / or another data connection / network; and / or via a wireless interface, such as for cellular networks, wireless local area networks (Wireless Local Area Network, WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM A broadcast transmitter; and / or a device of another terminal configured to receive / transmit communication signals; and / or Internet of Things (IoT) equipment.
  • PSTN Public Switched Telephone Networks
  • DSL Digital Subscriber Lines
  • WLAN wireless local area networks
  • DVB-H networks wireless local area networks
  • satellite networks satellite networks
  • AM-FM A broadcast transmitter AM-FM A broadcast transmitter
  • IoT Internet of Things
  • a terminal configured to communicate through a wireless interface may be referred to as a "wireless communication terminal", “wireless terminal”, or “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communication Systems (PCS) terminals that can combine cellular radiotelephones with data processing, fax, and data communication capabilities; can include radiotelephones, pagers, Internet / internal PDA with network access, web browser, notepad, calendar, and / or Global Positioning System (GPS) receiver; and conventional laptop and / or palm-type receivers or others including radiotelephone transceivers Electronic device.
  • PCS Personal Communication Systems
  • GPS Global Positioning System
  • Terminal can refer to access terminal, user equipment (User Equipment, UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user Device.
  • Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital processing (Personal Digital Assistant (PDA), wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks, or terminals in future evolved PLMNs, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • wireless communication Functional handheld devices computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks, or terminals in future evolved PLMNs, etc.
  • terminal 120 may perform terminal direct connection (Device to Device, D2D) communication.
  • D2D Terminal Direct connection
  • the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminals.
  • the communication system 100 may include multiple network devices and each network device may include other numbers of terminals within the coverage area. Embodiments of the present application There is no restriction on this.
  • the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.
  • network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.
  • the devices with communication functions in the network / system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 and a terminal 120 having a communication function, and the network device 110 and the terminal 120 may be the specific devices described above, which will not be repeated here; communication
  • the device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities, which are not limited in the embodiments of the present application.
  • FIG. 2 is a schematic diagram of a four-step random access process provided by an embodiment of the present application.
  • a terminal sends an MSG1 to a base station, and the MSG1 may include a random access preamble.
  • the base station can send MSG2 on the Downlink Shared Channel (DL-SCH).
  • MSG2 is Random Access Response (Random Access Response, RAR).
  • RAR Random Access Response
  • the base station can inform the terminal of available uplink resource information to transmit MSG3.
  • the terminal determines whether it belongs to its own RAR message, and when it determines to belong to its own RAR message, it sends MSG3 in the uplink resource designated by MSG2.
  • the base station may send an MSG4 message to the terminal, where the MSG4 includes a contention resolution message to complete the random access process.
  • FIG. 3 is a first schematic flowchart of a random access method provided by an embodiment of the present application.
  • the random access method is applied to a terminal side. As shown in FIG. 3, the random access method includes the following steps:
  • Step 301 The terminal obtains the configuration information of M downlink carriers and the configuration information of N uplink carriers, where M and N are positive integers.
  • the terminal may be any device capable of communicating with a network, such as a mobile phone, a tablet computer, a notebook, an in-vehicle terminal, or the like.
  • the terminal obtains the configuration information of M downlink carriers and the configuration information of N uplink carriers from the base station, where M and N are positive integers, and it should be noted that the values of M and N may be different , Can also be the same.
  • the carrier is a BWP, or the carrier is a component carrier (Component Carrier, CC), or the carrier is a predefined subband.
  • the bandwidth of 80MHz is divided into 4 non-overlapping subbands, and the bandwidth of each subband is 20MHz.
  • the first carrier and / or the second carrier and / or the third carrier have the same BWP ID, or CC ID, or a predefined subband ID.
  • the terminal obtains configuration information of M downlink BWPs and N uplink BWPs, and M and N are positive integers.
  • the terminal obtains the configuration of the M downlink carriers and the configuration of the N uplink carriers through Radio Resource Control (RRC) proprietary signaling or system broadcast messages.
  • RRC Radio Resource Control
  • Step 302 The terminal sends a first message on a first carrier and receives a second message on a second carrier.
  • the second message includes uplink scheduling information for a third message, and uplink scheduling information for the third message Indicating that the third message is transmitted on a third carrier; wherein, the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.
  • the first message is MSG1 in a random access process.
  • the second message is MSG2 in the random access process, or scheduling information for retransmission of MSG3 in the random access process.
  • the third message is MSG3 in the random access process.
  • the second message is transmitted by means of downlink control information (Downlink Control Information, DCI) or by means of a media access control (Media Access Control, MAC) control unit (Control Element, CE) Or through RRC proprietary signaling.
  • DCI Downlink Control Information
  • MAC Media Access Control
  • CE Control Element
  • the third carrier and the first carrier are the same carrier; or, the third carrier and the first carrier are different carriers.
  • the third carrier is an initially activated downlink BWP.
  • the terminal is pre-configured with M downlink BWP and N uplink BWP.
  • the terminal sends MSG1 on the first BWP, and receives MSG2 on the second BWP.
  • MSG2 includes uplink scheduling information for MSG3, and the MSG3 uplink scheduling information instructs MSG3 to transmit on the third BWP.
  • the uplink scheduling information of the third message may indicate at least one of the following information: a third carrier transmitting the third message, a time domain resource transmitting the third message, and a frequency domain resource transmitting the third message.
  • a third carrier transmitting the third message may indicate at least one of the following information: a third carrier transmitting the third message, a time domain resource transmitting the third message, and a frequency domain resource transmitting the third message.
  • the implementation of the uplink scheduling information of the third message is described below.
  • the uplink scheduling information of the third message includes first indication information, and the first indication information is used to indicate a third carrier of the N uplink carriers that transmits the third message.
  • the first indication information is used to indicate one or more of the N uplink carriers.
  • the first indication information indicates that the third BWP is the Kth out of N pre-configured BWPs.
  • the third BWP and the first BWP are the same BWP, or the third BWP and the first BWP are not the same BWP.
  • the first indication information indicates the third BWP
  • multiple BWPs can be indicated, and the indicated multiple BWPs are n of the N pre-configured uplink BWPs, for example, the indications are the second and fourth Pre-configured BWP.
  • multiple pre-configured BWPs constitute a set of candidate sets of the third BWP.
  • the terminal uses the one carrier indicated by the first indication information as the third carrier sending the third message, and Sending the third message on the third carrier;
  • the terminal selects one carrier among the multiple carriers indicated by the first indication information as the destination for sending the third message The third carrier, and send the third message on the selected third carrier. Further, the terminal selects one carrier among the multiple carriers indicated by the first indication information as the third to send the third message based on the result of performing Listen-Before-Talk (LBT) Carrier wave.
  • LBT Listen-Before-Talk
  • the first indication information indicates that the candidate set of the third BWP includes BWP2, BWP4, and BWP5, and the terminal selects an available BWP4 for sending MSG3 according to the LBT result.
  • the uplink scheduling information of the third message includes second indication information, and the second indication information is used to indicate at least one set of time domain resource configuration information for transmitting the third message.
  • the multiple carriers use the same time domain resource configuration information, or parts of the multiple carriers use the same The time domain resource configuration information of, or all of the multiple carriers use different time domain resource configuration information.
  • the first indication information indicates that the candidate set of the third BWP includes BWP2, BWP4, and BWP5.
  • Each BWP in the third BWP candidate set may have an independent time as indicated in the second indication information.
  • the domain resource configuration information may also share part or all of the BWP with the same time domain resource configuration information as indicated in the second indication information.
  • each set of time domain resource configuration information configures one or more time domain resources.
  • the terminal After determining the third carrier that sent the third message based on the first indication information, the terminal determines target time domain resource configuration information adopted by the third carrier based on the second indication information, if the If a time-domain resource is configured in the target time-domain resource configuration information, the terminal uses the one time-domain resource as the target time-domain resource for sending the third message, and sets the target time-domain resource in the third carrier The third message is sent on the resource. and / or,
  • the terminal After determining the third carrier that sent the third message based on the first indication information, the terminal determines target time domain resource configuration information adopted by the third carrier based on the second indication information, if the If multiple time domain resources are configured in the target time domain resource configuration information, the terminal selects one time domain resource among the multiple time domain resources as the target time domain resource for sending the third message, and Sending the third message on the target time domain resource of three carriers. Further, based on the result of performing LBT, the terminal selects one time domain resource among the plurality of time domain resources as the target time domain resource for sending the third message.
  • the uplink scheduling information of the third message includes third indication information, and the third indication information is used to indicate at least one set of frequency domain resource configuration information for transmitting the third message.
  • the frequency-domain resource configuration information refers to a carrier frequency domain resources (e.g. BWP) in the configuration information.
  • BWP carrier frequency domain resources
  • the multiple carriers use the same frequency domain resource configuration information, or part of the multiple carriers use the same The frequency domain resource configuration information, or all of the multiple carriers use different frequency domain resource configuration information.
  • the first indication information indicates that the candidate set of the third BWP includes BWP2, BWP4, and BWP5.
  • Each BWP in the third BWP candidate set may have an independent frequency as indicated in the third indication information.
  • the domain resource configuration information may also share part or all of the BWP with the same frequency domain resource configuration information as indicated in the third indication information.
  • each set of frequency domain resource configuration information configures one or more frequency domain resources
  • the terminal After determining the third carrier that sends the third message based on the first indication information, the terminal determines target frequency domain resource configuration information adopted by the third carrier based on the third indication information, if the If a frequency domain resource is configured in the target frequency domain resource configuration information, the terminal uses the one frequency domain resource as the target frequency domain resource for sending the third message, and sets the target frequency domain in the third carrier Sending the third message on the resource; and / or,
  • the terminal After determining the third carrier that sends the third message based on the first indication information, the terminal determines target frequency domain resource configuration information adopted by the third carrier based on the third indication information, if the If multiple frequency domain resources are configured in the target frequency domain resource configuration information, the terminal selects one frequency domain resource among the multiple frequency domain resources as the target frequency domain resource for sending the third message, and Sending the third message on the target frequency domain resource of three carriers. Further, based on the result of performing LBT, the terminal selects one frequency domain resource among the plurality of frequency domain resources as the target frequency domain resource for sending the third message.
  • the above 1), 2), and 3) can be arbitrarily combined to determine the transmission resource information (BWP, time-domain resources, and frequency-domain resources) of the third message.
  • BWP transmission resource information
  • time-domain resources time-domain resources
  • frequency-domain resources the transmission resource information of the third message.
  • the terminal selects one BWP as the third BWP sending the third message among the multiple BWPs indicated by the first indication information, and determines the selected third BWP based on the second indication information Adopted target time domain resource configuration information, and determining the target frequency domain resource configuration information adopted by the selected third BWP based on the third indication information; further, multiple time domain resources and target frequency domain are configured in the target time domain resource configuration information
  • Multiple frequency domain resources are configured in the resource configuration information, the terminal selects one time domain resource among the multiple time domain resources as the target time domain resource for sending the third message,
  • the frequency domain resource scheduled by the third indication information may be associated to On different BWP:
  • Method 1 When the bandwidth of the third carrier is equal to the bandwidth of the first carrier, the uplink scheduling information in the second message indicates that the third message is scheduled on the third carrier At this time, the maximum range of the frequency domain size of the scheduled resource is the bandwidth size of the third carrier.
  • the uplink scheduling information in the second message indicates that the third message is scheduled on the third carrier
  • the maximum range of the frequency domain size of the scheduled resources includes:
  • the frequency domain range of the scheduled resource belongs to the frequency domain resource range in which the minimum number of the third carrier minimum number RB starts to increase and the bandwidth size does not exceed the bandwidth size of the first carrier;
  • the frequency domain range of the scheduled resource belongs to the frequency domain resource range where the maximum number of the third carrier maximum number RB starts to decrease and the bandwidth size does not exceed the bandwidth size of the first carrier;
  • the frequency domain range of the scheduled resource belongs to the frequency domain resource range centered on the third carrier center and having a bandwidth size not exceeding the bandwidth size of the first carrier.
  • FIG. 4 is a second schematic flowchart of a random access method provided by an embodiment of the present application.
  • the random access method is applied to a base station side. As shown in FIG. 4, the random access method includes the following steps:
  • Step 401 The base station configures the configuration information of M downlink carriers and the configuration information of N uplink carriers for the terminal, where M and N are positive integers.
  • the type of the base station is not limited, for example, it may be an NR base station, such as gNB. It can also be a 4G base station, such as an eNB.
  • the terminal may be any device capable of communicating with a network, such as a mobile phone, a tablet computer, a notebook, an in-vehicle terminal, or the like.
  • the base station configures M downlink carrier configuration information and N uplink carrier configuration information for the terminal through RRC proprietary signaling or system broadcast messages. It should be noted that the values of M and N may be different or the same.
  • the carrier is BWP, or the carrier is CC, or the carrier is a predefined subband.
  • the first carrier and / or the second carrier and / or the third carrier have the same BWP ID, or CC ID, or a predefined subband ID.
  • the base station configures M downlink BWP configuration information and N uplink BWP configuration information, and M and N are positive integers.
  • Step 402 The base station receives the first message on the first carrier and sends the second message on the second carrier, where the second message includes uplink scheduling information for the third message, and uplink scheduling for the third message
  • the information indicates that the third message is transmitted on a third carrier; wherein, the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.
  • the first message is MSG1 in a random access process.
  • the second message is MSG2 in the random access process, or scheduling information for retransmission of MSG3 in the random access process.
  • the third message is MSG3 in the random access process.
  • the second message is transmitted through DCI, MAC or CE, or RRC proprietary signaling.
  • the third carrier and the first carrier are the same carrier; or, the third carrier and the first carrier are different carriers.
  • the third carrier is an initially activated downlink BWP.
  • the base station pre-configures M downlink BWPs and N uplink BWPs.
  • the base station receives MSG1 on the first BWP and sends MSG2 on the second BWP.
  • MSG2 includes uplink scheduling information for MSG3, and the MSG3 uplink scheduling information instructs MSG3 to transmit on the third BWP.
  • the uplink scheduling information of the third message may indicate at least one of the following information: a third carrier transmitting the third message, a time domain resource transmitting the third message, and a frequency domain resource transmitting the third message.
  • a third carrier transmitting the third message may indicate at least one of the following information: a third carrier transmitting the third message, a time domain resource transmitting the third message, and a frequency domain resource transmitting the third message.
  • the implementation of the uplink scheduling information of the third message is described below.
  • the uplink scheduling information of the third message includes first indication information, and the first indication information is used to indicate a third carrier of the N uplink carriers that transmits the third message.
  • the first indication information is used to indicate one or more of the N uplink carriers.
  • the first indication information indicates that the third BWP is the Kth out of N pre-configured BWPs.
  • the third BWP and the first BWP are the same BWP, or the third BWP and the first BWP are not the same BWP.
  • the first indication information indicates the third BWP
  • multiple BWPs can be indicated, and the indicated multiple BWPs are n of the N pre-configured uplink BWPs.
  • the indications are the second and fourth, respectively.
  • Pre-configured BWP it should be noted that here, multiple pre-configured BWPs constitute a set of candidate sets of the third BWP.
  • the uplink scheduling information of the third message includes second indication information, and the second indication information is used to indicate at least one set of time domain resource configuration information for transmitting the third message.
  • the multiple carriers use the same time domain resource configuration information, or parts of the multiple carriers use the same The time domain resource configuration information of, or all of the multiple carriers use different time domain resource configuration information.
  • the first indication information indicates that the candidate set of the third BWP includes BWP2, BWP4, and BWP5.
  • Each BWP in the third BWP candidate set may have an independent time as indicated in the second indication information.
  • the domain resource configuration information may also share part or all of the BWP with the same time domain resource configuration information as indicated in the second indication information.
  • each set of time domain resource configuration information configures one or more time domain resources.
  • the uplink scheduling information of the third message includes third indication information, and the third indication information is used to indicate at least one set of frequency domain resource configuration information for transmitting the third message.
  • the frequency domain resource configuration information refers to frequency domain resource configuration information within a carrier.
  • the multiple carriers use the same frequency domain resource configuration information, or part of the multiple carriers use the same The frequency domain resource configuration information, or all of the multiple carriers use different frequency domain resource configuration information.
  • the first indication information indicates that the candidate set of the third BWP includes BWP2, BWP4, and BWP5.
  • Each BWP in the third BWP candidate set may have an independent frequency as indicated in the third indication information.
  • the domain resource configuration information may also share part or all of the BWP with the same frequency domain resource configuration information as indicated in the third indication information.
  • each set of frequency domain resource configuration information configures one or more frequency domain resources.
  • the above 1), 2), and 3) can be arbitrarily combined to determine the transmission resource information (BWP, time-domain resources, and frequency-domain resources) of the third message.
  • BWP transmission resource information
  • time-domain resources time-domain resources
  • frequency-domain resources the transmission resource information of the third message.
  • the terminal selects one BWP as the third BWP sending the third message among the multiple BWPs indicated by the first indication information, and determines the selected third BWP based on the second indication information Adopted target time domain resource configuration information, and determining the target frequency domain resource configuration information adopted by the selected third BWP based on the third indication information; further, multiple time domain resources and target frequency domain are configured in the target time domain resource configuration information
  • Multiple frequency domain resources are configured in the resource configuration information, the terminal selects one time domain resource among the multiple time domain resources as the target time domain resource for sending the third message,
  • the frequency domain resource scheduled by the third indication information may be associated to On different BWP:
  • Method 1 When the bandwidth of the third carrier is equal to the bandwidth of the first carrier, the uplink scheduling information in the second message indicates that the third message is scheduled on the third carrier At this time, the maximum range of the frequency domain size of the scheduled resource is the bandwidth size of the third carrier.
  • the uplink scheduling information in the second message indicates that the third message is scheduled on the third carrier
  • the maximum range of the frequency domain size of the scheduled resources includes:
  • the frequency domain range of the scheduled resource belongs to the frequency domain resource range in which the minimum number of the third carrier minimum number RB starts to increase and the bandwidth size does not exceed the bandwidth size of the first carrier;
  • the frequency domain range of the scheduled resource belongs to the frequency domain resource range in which the maximum number of the third carrier maximum number RB starts to decrease and the bandwidth size does not exceed the bandwidth size of the first carrier;
  • the frequency domain range of the scheduled resource belongs to the frequency domain resource range centered on the third carrier center and having a bandwidth size not exceeding the bandwidth size of the first carrier.
  • FIG. 5 is a schematic structural diagram 1 of a random access device provided by an embodiment of the present application.
  • the device is applied to a terminal side. As shown in FIG. 5, the device includes:
  • the obtaining unit 501 is configured to obtain the configuration information of M downlink carriers and the configuration information of N uplink carriers, where M and N are positive integers;
  • the random access unit 502 is configured to send a first message on the first carrier and receive a second message on the second carrier, where the second message includes uplink scheduling information for the third message, and the uplink of the third message
  • the scheduling information indicates that the third message is transmitted on the third carrier; wherein, the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.
  • the uplink scheduling information of the third message includes first indication information, and the first indication information is used to indicate a third carrier of the N uplink carriers that transmits the third message.
  • the random access unit 502 is used to:
  • the first indication information indicates one of the N uplink carriers, use one carrier indicated by the first indication information as the third carrier sending the third message, and The third message is sent on the third carrier.
  • the random access unit 502 is used to:
  • the first indication information indicates multiple carriers among the N uplink carriers, select one carrier among the multiple carriers indicated by the first indication information as the third carrier that sends the third message Carrier, and send the third message on the selected third carrier.
  • the random access unit 502 is configured to select one carrier among the multiple carriers indicated by the first indication information as the first to send the third message based on the result of performing LBT Three carriers.
  • the uplink scheduling information of the third message includes second indication information, and the second indication information is used to indicate at least one set of time domain resource configuration information for transmitting the third message.
  • the multiple carriers use the same time-domain resource configuration information, or the multiple carriers The part of uses the same time domain resource configuration information, or all of the multiple carriers use different time domain resource configuration information.
  • each set of time domain resource configuration information configures one or more time domain resources; the random access unit 502 is configured to:
  • the terminal After determining the third carrier that sent the third message based on the first indication information, determine target time domain resource configuration information adopted by the third carrier based on the second indication information, if the target time domain If a time domain resource is configured in the resource configuration information, the terminal uses the one time domain resource as the target time domain resource for sending the third message, and sends it on the target time domain resource of the third carrier The third message.
  • each set of time domain resource configuration information configures one or more time domain resources; the random access unit 502 is configured to:
  • the terminal After determining the third carrier that sent the third message based on the first indication information, determine target time domain resource configuration information adopted by the third carrier based on the second indication information, if the target time domain If multiple time domain resources are configured in the resource configuration information, the terminal selects one time domain resource among the multiple time domain resources as the target time domain resource for sending the third message, and Sending the third message on the target time domain resource.
  • the random access unit 502 is configured to select one time domain resource among the multiple time domain resources as the target time domain resource for sending the third message based on the result of performing LBT.
  • the uplink scheduling information of the third message includes third indication information, and the third indication information is used to indicate at least one set of frequency domain resource configuration information for transmitting the third message.
  • the frequency domain resource configuration information refers to frequency domain resource configuration information within a carrier.
  • the multiple carriers use the same frequency domain resource configuration information, or the multiple carriers The part of uses the same frequency domain resource configuration information, or all of the multiple carriers use different frequency domain resource configuration information.
  • each set of frequency domain resource configuration information configures one or more frequency domain resources; the random access unit 502 is configured to:
  • the terminal After determining the third carrier that sent the third message based on the first indication information, determine target frequency domain resource configuration information adopted by the third carrier based on the third indication information, if the target frequency domain If a frequency domain resource is configured in the resource configuration information, the terminal uses the one frequency domain resource as the target frequency domain resource for sending the third message, and sends it on the target frequency domain resource of the third carrier The third message.
  • each set of frequency domain resource configuration information configures one or more frequency domain resources; the random access unit 502 is configured to:
  • the terminal After determining the third carrier that sent the third message based on the first indication information, determine target frequency domain resource configuration information adopted by the third carrier based on the third indication information, if the target frequency domain If multiple frequency domain resources are configured in the resource configuration information, the terminal selects one frequency domain resource among the multiple frequency domain resources as the target frequency domain resource for sending the third message, and Sending the third message on the target frequency domain resource.
  • the random access unit 502 is configured to select one frequency domain resource among the plurality of frequency domain resources as the target frequency domain resource for sending the third message based on the result of performing LBT.
  • the uplink scheduling information in the second message indicates that the third carrier is scheduled on the third carrier
  • the maximum range of the frequency domain size of the scheduled resource is the bandwidth of the third carrier.
  • the uplink scheduling information in the second message indicates that the third carrier is scheduled on the third carrier
  • the maximum range of the frequency domain size of the scheduled resource is the bandwidth size of the third bandwidth.
  • the uplink scheduling information in the second message indicates that the third carrier is scheduled on the third carrier
  • the maximum range of the frequency domain size of the scheduled resources includes:
  • the frequency domain range of the scheduled resource belongs to the frequency domain resource range in which the minimum number of the third carrier minimum number RB starts to increase and the bandwidth size does not exceed the bandwidth size of the first carrier;
  • the frequency domain range of the scheduled resource belongs to the frequency domain resource range in which the maximum number of the third carrier maximum number RB starts to decrease and the bandwidth size does not exceed the bandwidth size of the first carrier;
  • the frequency domain range of the scheduled resource belongs to the frequency domain resource range centered on the third carrier center and having a bandwidth size not exceeding the bandwidth size of the first carrier.
  • the acquiring unit 501 is configured to acquire the configuration of the M downlink carriers and the configuration of the N uplink carriers through RRC dedicated signaling or system broadcast messages.
  • the first message is MSG1 during random access.
  • the second message is MSG2 in the random access process, or scheduling information for the retransmission of MSG3 in the random access process.
  • the second message is transmitted through DCI, MAC or CE, or RRC proprietary signaling.
  • the third message is MSG3 during random access.
  • the third carrier and the first carrier are the same carrier; or, the third carrier and the first carrier are different carriers.
  • the carrier is BWP, or the carrier is CC, or the carrier is a predefined subband.
  • the first carrier and / or the second carrier and / or the third carrier have the same BWP ID, or CC ID, or a predefined subband ID.
  • the third carrier is an initially activated downlink BWP.
  • FIG. 6 is a schematic structural diagram 2 of a random access device provided by an embodiment of the present application.
  • the device is applied to a base station side. As shown in FIG. 6, the device includes:
  • the configuration unit 601 is configured to configure the configuration information of M downlink carriers and the configuration information of N uplink carriers for the terminal, M and N are positive integers;
  • the random access unit 602 is configured to receive the first message on the first carrier and send the second message on the second carrier, where the second message includes uplink scheduling information for the third message, and the The uplink scheduling information indicates that the third message is transmitted on the third carrier; wherein, the first carrier and the third carrier belong to the N uplink carriers, and the second carrier belongs to the M downlink carriers.
  • the uplink scheduling information of the third message includes first indication information, and the first indication information is used to indicate a third carrier of the N uplink carriers that transmits the third message.
  • the first indication information is used to indicate one or more of the N uplink carriers.
  • the uplink scheduling information of the third message includes second indication information, and the second indication information is used to indicate at least one set of time domain resource configuration information for transmitting the third message.
  • the multiple carriers use the same time domain resource configuration information, or parts of the multiple carriers use the same The time domain resource configuration information of, or all of the multiple carriers use different time domain resource configuration information.
  • each set of time domain resource configuration information configures one or more time domain resources.
  • the uplink scheduling information of the third message includes third indication information, and the third indication information is used to indicate at least one set of frequency domain resource configuration information for transmitting the third message.
  • the multiple carriers use the same frequency domain resource configuration information, or part of the multiple carriers use the same The frequency domain resource configuration information, or all of the multiple carriers use different frequency domain resource configuration information.
  • the frequency domain resource configuration information refers to frequency domain resource configuration information within a carrier.
  • each set of frequency domain resource configuration information configures one or more frequency domain resources.
  • the uplink scheduling information in the second message indicates that the third carrier is scheduled on the third carrier
  • the maximum range of the frequency domain size of the scheduled resource is the bandwidth of the third carrier.
  • the uplink scheduling information in the second message indicates that the third carrier is scheduled on the third carrier
  • the maximum range of the frequency domain size of the scheduled resource is the bandwidth size of the third bandwidth.
  • the uplink scheduling information in the second message indicates that the third carrier is scheduled on the third carrier
  • the maximum range of the frequency domain size of the scheduled resources includes:
  • the frequency domain range of the scheduled resource belongs to the frequency domain resource range in which the minimum number of the third carrier minimum number RB starts to increase and the bandwidth size does not exceed the bandwidth size of the first carrier;
  • the frequency domain range of the scheduled resource belongs to the frequency domain resource range in which the maximum number of the third carrier maximum number RB starts to decrease and the bandwidth size does not exceed the bandwidth size of the first carrier;
  • the frequency domain range of the scheduled resource belongs to the frequency domain resource range centered on the third carrier center and having a bandwidth size not exceeding the bandwidth size of the first carrier.
  • the configuration unit 601 is configured to configure M downlink carrier configuration information and N uplink carrier configuration information for the terminal through RRC proprietary signaling or system broadcast messages.
  • the first message is MSG1 during random access.
  • the second message is MSG2 in the random access process, or scheduling information for the retransmission of MSG3 in the random access process.
  • the second message is transmitted through DCI, MAC or CE, or RRC proprietary signaling.
  • the third message is MSG3 during random access.
  • the third carrier and the first carrier are the same carrier; or, the third carrier and the first carrier are different carriers.
  • the carrier is BWP, or the carrier is CC, or the carrier is a predefined subband.
  • the first carrier and / or the second carrier and / or the third carrier have the same BWP ID, or CC ID, or a predefined subband ID.
  • the third carrier is an initially activated downlink BWP.
  • the communication device 600 shown in FIG. 7 includes a processor 610, and the processor 610 may call and run a computer program from a memory to implement the method in the embodiments of the present application.
  • the communication device 600 may further include a memory 620.
  • the processor 610 can call and run a computer program from the memory 620 to implement the method in the embodiments of the present application.
  • the memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by the device.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include antennas, and the number of antennas may be one or more.
  • the communication device 600 may specifically be a terminal or a base station according to an embodiment of this application, and the communication device 600 may implement the corresponding process implemented by the terminal or the base station in each method of the embodiment of this application. Repeat again.
  • the communication device 600 may specifically be the mobile terminal / terminal of the embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the mobile terminal / terminal in each method of the embodiment of the present application. This will not be repeated here.
  • FIG. 8 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 700 shown in FIG. 8 includes a processor 710, and the processor 710 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 700 may further include a memory 720.
  • the processor 710 can call and run a computer program from the memory 720 to implement the method in the embodiments of the present application.
  • the memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.
  • the chip 700 may further include an input interface 730.
  • the processor 710 can control the input interface 730 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.
  • the chip 700 may further include an output interface 740.
  • the processor 710 can control the output interface 740 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.
  • the chip can be applied to the terminal or the base station in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal or the base station in each method of the embodiments of the present application.
  • the chip can be applied to the mobile terminal / terminal in the embodiments of the present application, and the chip can implement the corresponding process implemented by the mobile terminal / terminal in each method of the embodiments of the present application. Repeat.
  • chips mentioned in the embodiments of the present application may also be referred to as system-on-chips, system chips, chip systems, or system-on-chip chips.
  • FIG. 9 is a schematic block diagram of a communication system 900 provided by an embodiment of the present application. As shown in FIG. 9, the communication system 900 includes a terminal 910 and a base station 920.
  • the terminal 910 may be used to implement the corresponding function implemented by the terminal in the above method
  • the base station 920 may be used to implement the corresponding function implemented by the base station in the above method.
  • no further description is provided here.
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has signal processing capabilities.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an existing programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically Erasable programmable read only memory (Electrically, EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • Synchlink DRAM SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous) DRAM (SDRAM), double data rate synchronous dynamic random access memory (double data) SDRAM (DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memories in the embodiments of the present application are intended to include but are not limited to these and any other suitable types of memories.
  • Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the terminal or the base station in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the terminal or the base station in each method of the embodiments of the present application. I will not repeat them here.
  • the computer-readable storage medium may be applied to the mobile terminal / terminal in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the mobile terminal / terminal in each method of the embodiments of the present application, in order to It is concise and will not be repeated here.
  • An embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the terminal or the base station in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the terminal or the base station in each method of the embodiments of the present application. This will not be repeated here.
  • the computer program product can be applied to the mobile terminal / terminal in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal / terminal in each method of the embodiments of the present application, for simplicity , Will not repeat them here.
  • An embodiment of the present application also provides a computer program.
  • the computer program can be applied to the terminal or the base station in the embodiments of the present application.
  • the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the terminal or the base station in each method of the embodiments of the present application.
  • I will not repeat them here.
  • the computer program can be applied to the mobile terminal / terminal in the embodiments of the present application, and when the computer program runs on the computer, the computer is allowed to execute the corresponding implementations of the mobile terminal / terminal in each method of the embodiments of the present application For the sake of brevity, I will not repeat them here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, 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 the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

Abstract

Les modes de réalisation de la présente invention concernent un procédé et un appareil d'accès aléatoire, un terminal et une station de base. Le procédé comprend les étapes suivantes : le terminal obtient des informations de configuration de M porteuses de liaison descendante et des informations de configuration de N porteuses de liaison montante, M et N étant des entiers positifs ; et le terminal envoie un premier message sur une première porteuse, et reçoit un deuxième message sur une deuxième porteuse, le deuxième message comprenant des informations de planification de liaison montante pour un troisième message, les informations de planification de liaison montante pour le troisième message indiquant que le troisième message est transmis sur une troisième porteuse, la première porteuse et la troisième porteuse appartenant aux N porteuses de liaison montante, et la deuxième porteuse appartenant aux M porteuses de liaison descendante.
PCT/CN2018/114925 2018-11-09 2018-11-09 Procédé et appareil d'accès aléatoire, terminal et station de base WO2020093403A1 (fr)

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CN201880096317.6A CN112534946A (zh) 2018-11-09 2018-11-09 一种随机接入方法及装置、终端、基站

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