WO2020186466A1 - 无线通信的方法、终端设备和网络设备 - Google Patents

无线通信的方法、终端设备和网络设备 Download PDF

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Publication number
WO2020186466A1
WO2020186466A1 PCT/CN2019/078786 CN2019078786W WO2020186466A1 WO 2020186466 A1 WO2020186466 A1 WO 2020186466A1 CN 2019078786 W CN2019078786 W CN 2019078786W WO 2020186466 A1 WO2020186466 A1 WO 2020186466A1
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WIPO (PCT)
Prior art keywords
mac
message
pdu
terminal device
identifier
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PCT/CN2019/078786
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English (en)
French (fr)
Inventor
石聪
Original Assignee
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
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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 CN201980093771.0A priority Critical patent/CN113545161A/zh
Priority to PCT/CN2019/078786 priority patent/WO2020186466A1/zh
Priority to EP19920463.7A priority patent/EP3923668A4/en
Priority to CN202111344178.4A priority patent/CN113950161B/zh
Priority to CN201980093548.6A priority patent/CN113519201A/zh
Priority to PCT/CN2019/079939 priority patent/WO2020186546A1/zh
Priority to CN202111184645.1A priority patent/CN113905453B/zh
Priority to EP19920380.3A priority patent/EP3930414A4/en
Publication of WO2020186466A1 publication Critical patent/WO2020186466A1/zh
Priority to US17/465,497 priority patent/US20210400707A1/en
Priority to US17/477,048 priority patent/US20220007426A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • H04W74/0841Random access procedures, e.g. with 4-step access with collision treatment
    • H04W74/085Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information
    • H04W74/008Transmission of channel access control information with additional processing of random access related information at receiving side
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access

Definitions

  • the embodiments of the present application relate to the field of communications, and more specifically, to methods, terminal devices, and network devices for wireless communication.
  • a wireless communication method, terminal equipment and network equipment are provided, which can solve the conflict problem in two-step random access.
  • a wireless communication method includes: a terminal device sends a first message to a network device, where the first message includes a preamble identifier ID for random access and an uplink message.
  • the message includes the first identifier; the terminal device determines the target radio network temporary identifier RNTI used to monitor the physical downlink control channel PDCCH according to the first identifier; the terminal device monitors the PDCCH scrambled by the target RNTI; according to The second message scheduled by the PDCCH and the uplink message determine whether the contention conflict is resolved
  • a wireless communication method including: a network device receives a first message sent by a terminal device, the first message including a preamble identifier ID for random access and an uplink message, the uplink information It includes a first identifier; the network device determines a second message to reply to the terminal device according to the decoding situation of the first message.
  • a terminal device configured to execute the foregoing first aspect or any possible implementation of the first aspect.
  • the terminal device includes a unit for executing the foregoing first aspect or any possible implementation of the first aspect.
  • a network device configured to execute the foregoing second aspect or any possible implementation of the second aspect.
  • the network device includes a unit for executing the foregoing second aspect or the method in any possible implementation manner of the second aspect.
  • a terminal device in a fifth aspect, includes a processor and a memory.
  • the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned first aspect or each of its implementation modes.
  • a network device in a sixth aspect, includes a processor and a memory.
  • the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned second aspect or each of its implementation modes.
  • a chip is provided for implementing any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes any one of the above-mentioned first aspect to the second aspect or any of the implementations thereof method.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute any one of the first aspect to the second aspect or the method in each implementation manner thereof.
  • a computer program product including computer program instructions, which cause a computer to execute any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.
  • a computer program which when running on a computer, causes the computer to execute any one of the above-mentioned first aspect to the second aspect or the method in each implementation manner thereof.
  • the terminal device can send a first message to the network device in a two-step random access.
  • the first message includes a random access preamble ID and an uplink message
  • the uplink information can include a first identifier
  • the PDCCH scrambled by a specific RNTI can be monitored according to the first identifier, so that it can be determined whether the contention conflict is resolved according to the second message scheduled by the PDCCH and the uplink message.
  • Fig. 1 shows a schematic diagram of an application scenario of an embodiment of the present application.
  • Fig. 2 shows a schematic flowchart of a wireless communication method according to an embodiment of the present application.
  • Fig. 3 shows a schematic diagram of an example of the format of MAC PDU according to an embodiment of the present application.
  • Figure 4 shows an example of the MAC sub-packet header format.
  • Figure 5 shows another example of the MAC sub-packet header format.
  • Fig. 6 shows a schematic diagram of an example of the MAC RAR format.
  • FIG. 7 shows a schematic flowchart of a wireless communication method according to another embodiment of the present application.
  • FIG. 8 shows a schematic block diagram of a terminal device according to an embodiment of the present application.
  • Fig. 9 shows a schematic block diagram of a network device according to an embodiment of the present application.
  • Fig. 10 shows a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG. 11 shows a schematic block diagram of a chip of an embodiment of the present application.
  • Fig. 12 shows a schematic block diagram of a communication system according to an embodiment of the present application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System of Mobile Communication
  • 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
  • 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 device 120 (or called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in 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 the 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, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNB evolved base station
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches
  • the communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110.
  • the "terminal equipment” used here includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, 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 (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • PSTN public switched telephone networks
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL
  • a terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio phone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • direct terminal connection (Device to Device, D2D) communication may be performed between the terminal devices 120.
  • the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • Figure 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment 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 device 120 with communication functions, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the application.
  • the contention-based random access process can adopt a four-step random access process similar to LTE (MSG 1-MSG 4), specifically:
  • the terminal device sends a random access preamble (or preamble sequence) identifier (preamble index) to the network device.
  • the network device detects the preamble index sent by the terminal device and sends a random access response (RAR) to the terminal device to inform the terminal device of the uplink resource information that can be used when sending MSG3, and allocate it to the terminal device Temporary Wireless Network Temporary Identifier (Radio Network Temporary Identity, RNTI), to provide terminal equipment with a time alignment command (time alignment command), etc. If the terminal equipment does not detect RAR within the RAR time window, the terminal equipment retransmits the preamble index If the terminal device detects the RAR within the RAR time window, the terminal device performs MSG3 transmission according to the uplink grant (UL grant) resource indicated by the RAR.
  • RAR random access response
  • the Random Access Radio Network Temporary Identity (RA-RNTI) used by the network device when sending RAR is calculated based on the location of the PRACH time-frequency resource.
  • the physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) corresponding to the downlink control channel (Physical Downlink Control Channel, PDCCH) may include responses to multiple preambles.
  • MSG 3 After receiving the RAR, the terminal device sends an MSG3 message in the uplink resource designated by the RAR. This step allows Hybrid Automatic Repeat reQuest (HARQ) retransmission.
  • HARQ Hybrid Automatic Repeat reQuest
  • the network device sends an MSG4 message to the terminal device, which includes a contention resolution message, and this step allows HARQ retransmission.
  • the terminal device receives the MSG 4 sent by the network device, it will detect whether the MSG 4 includes part of the content in the MSG3 message sent by the terminal device, that is, the contention resolution ID (Contention Resolution ID). If it is included, it indicates that the random access process of the terminal device is successful, otherwise it is considered that the random process has failed, and the terminal device needs to initiate the random access process from MSG 1 again.
  • the contention resolution ID Contention Resolution ID
  • MSG3 contains the Cell Radio Network Temporary Identity (C-RNTI) Media Access Control (MAC) Control Element (CE)
  • C-RNTI Cell Radio Network Temporary Identity
  • CE Media Access Control
  • MSG4 is controlled by C-RNTI.
  • -RNTI scrambled PDCCH scheduling. If the UE blindly detects the PDCCH scrambled by the C-RNTI, the random access process is successful, otherwise the random access process is considered to have failed, and the terminal device needs to initiate the random access process again from MSG 1.
  • the terminal device sends msgA to the network device, and the msgA may include the aforementioned MSG1 and MSG3;
  • the network device sends msgB to the terminal device, and the msgB may include the aforementioned MSG2 and MSG4.
  • the embodiment of the present application provides a two-step random access contention resolution method, which can solve the conflict problem in the two-step random access.
  • FIG. 2 is a schematic flowchart of a wireless communication method according to an embodiment of the present application. As shown in FIG. 2, the method 200 may include:
  • the terminal device sends a first message to the network device, where the first message includes a preamble ID used for random access and an uplink message, and the uplink message includes a first identifier.
  • the terminal device determines, according to the first identifier, a target radio network temporary identifier RNTI used for monitoring the physical downlink control channel PDCCH;
  • S230 The terminal device monitors the PDCCH scrambled by the target RNTI
  • S240 Determine whether the contention conflict is resolved according to the second message scheduled by the PDCCH and the uplink message.
  • the terminal device may determine the resource used to send the first message, which specifically includes: sending a preamble ID (preamble index) Physical Random Access Channel (PRACH) resources, and Physical Uplink Shared Channel (PUSCH) resources used to send the uplink message (or called payload). Further, the terminal device can transmit a preamble index on the PRACH resource, and transmit an uplink message on the PUSCH resource.
  • a preamble ID preamble index
  • PRACH Physical Random Access Channel
  • PUSCH Physical Uplink Shared Channel
  • the PRACH resource and the PUSCH resource may have a corresponding relationship, that is, after the PRACH resource is determined, the PUSCH resource may be determined according to the corresponding relationship.
  • the uplink message includes the first identifier, and the content included in the uplink message has certain differences according to different events that trigger random access.
  • the event triggering random access may include:
  • Event 1 Idle initial random access (RRC Connection Re-establishment procedure), in this case, the uplink message does not include C-RNTI;
  • Event 2 RRC Connection Re-establishment procedure.
  • the uplink message does not include C-RNTI
  • the uplink message includes C-RNTI;
  • Event 4 When the uplink is out of synchronization, downlink or uplink data arrives (DL or UL data arrival during RRC_CONNECTED when UL synchronisation status is "non-synchronised"), and the uplink message includes C-RNTI;
  • Event 5 In the RRC connection state, uplink data arrives and there is no PUCCH resource (UL data arrival during RRC_CONNECTED when there are no PUCCH resources for SR available) for the scheduling request (Scheduling Request, SR).
  • the uplink The message includes C-RNTI;
  • Event 6 SR failure (SR failure), in this case, the uplink message includes C-RNTI;
  • Event 7 Request by RRC uplink synchronous reconfiguration.
  • the uplink message includes C-RNTI;
  • Event 8 transition from RRC inactive state (Transition from RRC_INACTIVE).
  • the uplink message does not include C-RNTI.
  • the uplink message includes C-RNTI;
  • the uplink message includes C-RNTI
  • the uplink message includes C-RNTI.
  • the terminal device can learn the C-RNTI.
  • the first identifier in the uplink message may be the C-RNTI, for example, the C-RNTI may be included in In the Media Access Control (MAC) control element (CE) of the uplink message.
  • MAC Media Access Control
  • CE control element
  • the uplink message It may include the common control channel (CCCH) service data unit (service data unit, SDU), and the CCCH SDU may include signaling radio bearers (Signaling Radio Bearers, SRB).
  • CCCH common control channel
  • SDU signaling radio bearers
  • Radio Resource Control (Radio Resource) transmitted in Control, RRC) messages for example, RRC setup request (RRCSetupRequest), RRC resume request (RRCResumeRequest), RRC reestablishment request (RRCReestablishmentRequest), RRC system message request (RRCSystemInfoRequest) and other RRC messages.
  • RRC setup request RRCSetupRequest
  • RRC resume request RRC resume request
  • RRCResumeRequest RRC reestablishment request
  • RRC system message request RRCSystemInfoRequest
  • the CCCH SDU may include the first identifier.
  • the first identifier is different from the C-RNTI.
  • the first identifier may be one of the following:
  • Next generation 5G Short Temporary Mobile Subscriber Identity Next generation 5G Short Temporary Mobile Subscriber Identity (Next generation 5G Short Temporary Mobile Subscription Identifier, NG-5G-S-TMSI);
  • I-RNTI used to identify the context of a terminal device in an inactive state
  • the first identifier can be used to indicate the connection status of the terminal device.
  • the network device can determine the connection status of the terminal device according to the first identifier in the first message. Choose different response methods. For example, for terminal devices that have resolved contention conflicts, the network device may carry a matching identifier in the response message to instruct the terminal devices to resolve their contention conflicts. For example, if the first identifier is the C-RNTI, and the terminal device blindly detects the PDCCH scrambled by the C-RNTI, it is determined that the contention conflict of the terminal device is resolved.
  • the terminal device can monitor the corresponding RNTI scrambled PDCCH according to the connection state it is in.
  • the terminal device can learn the C-RNTI, and therefore, the terminal device can monitor the PDCCH scrambled by the first C-RNTI; or
  • the terminal device may not be able to learn the C-RNTI.
  • the terminal device may monitor other RNTIs other than C-RNTI, for example, random access RA-RNTI Scrambled PDCCH.
  • the RA-RNTI may be determined according to the PRACH resource for sending the preamble index, for example, calculated by the following formula:
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id.
  • s_id is the index of the first OFDM symbol of the PRACH resource (0 ⁇ s_id ⁇ 14);
  • t_id is the index of the first time slot of the PRACH resource in the system frame (0 ⁇ t_id ⁇ 80);
  • f_id is the index of PRACH opportunity in the frequency domain (0 ⁇ f_id ⁇ 8);
  • ul_carrier_id is the UL carrier used for preamble index transmission.
  • the network device From the RA-RNTI determination method, it can be seen that since the time-frequency position of the preamble index sent by the terminal device is determined, when the network device decodes the preamble index, it also obtains the time-frequency position of the PRACH resource that sends the preamble index, and then When the contention conflict of the terminal equipment is resolved, the corresponding RA-RNTI can be used to scramble the PDCCH.
  • the method for determining the RA-RNTI by the terminal device may be the same as the existing determination method, or it may be different, which is not specifically limited in the embodiment of the present application.
  • the terminal device may The RA-RNTI determined according to the resource used to transmit the first message and/or the resource used to transmit the preamble sequence.
  • the method 200 may further include:
  • the terminal device starts a first timer or a first window
  • the terminal device may monitor the PDCCH scrambled by the corresponding RNTI according to the first identifier.
  • the terminal device may monitor the PDCCH scrambled by the C-RNTI, or if the The first identifier is other information. Before the first timer expires, the terminal device can monitor the PDCCH scrambled by the RA-RNTI.
  • the terminal device may start the first timer after sending the random access preamble, or the terminal device may also start the first timer after sending the uplink message. After that, the first timer is started, and the embodiment of the present application does not specifically limit the opening timing of the first timer.
  • the terminal device may monitor the C-RNTI within a time window (within the time range during which the first timer has not expired) -RNTI scrambled PDCCH, if the C-RNTI scrambled PDCCH is successfully monitored, it is determined that the contention conflict of the terminal device is resolved; or within the time window, the terminal device does not monitor the C-RNTI scrambled The PDCCH determines that the contention conflict of the terminal device is not resolved.
  • the terminal device if the first identifier is information other than C-RNTI, for example, a random number or NG-5G-S-TMSI, the terminal device is in the first Before the timer expires, the RA-RNTI scrambled PDCCH can be monitored. If the RA-RNTI scrambled PDCCH is successfully monitored, the second message scheduled by the PDCCH is used to determine whether the contention conflict is resolved, or if the timer is Before the timeout, the terminal equipment did not monitor the PDCCH scrambled by RA-RNTI, and determined that the contention conflict was not resolved.
  • the first identifier is information other than C-RNTI, for example, a random number or NG-5G-S-TMSI
  • the terminal device is in the first Before the timer expires, the RA-RNTI scrambled PDCCH can be monitored. If the RA-RNTI scrambled PDCCH is successfully monitored, the second message scheduled by the PDCCH is used to determine whether the contention conflict
  • the determining whether the contention conflict is resolved according to the second message scheduled by the PDCCH and the uplink message includes:
  • the second message does not include the second identifier, it is determined that the competition conflict is not resolved.
  • the second message includes a second identifier, and the second identifier does not match the uplink message, it is determined that the contention conflict is not resolved;
  • the second message includes a second identifier, and the second identifier matches the uplink message, determine that the contention conflict is resolved;
  • the second identifier is a contention resolution ID (Contention Resolution Identify) of a terminal device.
  • the terminal device can blindly detect multiple RA-RNTI scrambled PDCCHs. For example, if the terminal device blindly detects the first PDCCH scrambled by RA-RNTI, but the first PDCCH If the second identifier in the second message scheduled by the PDCCH does not match the uplink information in the first message, or the second message does not include the second identifier, the terminal device may continue to blindly detect the RA-RNTI scrambled PDCCH Until the timer expires.
  • the second message includes a random access response of the network device to the first message, and the second message may be one or more MAC protocol data units (Protocol Data Unit, PDU),
  • the MAC PDU includes one or more MAC sub-PDUs (MAC subPUD).
  • MAC sub-PDU is in one of the following formats:
  • the MAC sub-PDU only includes the MAC sub-packet header
  • the MAC sub-PDU includes a MAC sub-packet header and a MAC service data unit SDU;
  • the MAC sub-PDU includes a MAC sub-packet header and a MAC control element CE;
  • the MAC sub-PDU includes a MAC sub-packet header and padding bits.
  • the second identifier may be included in the MAC CE, that is, if the MAC sub-PDUs included in the MAC PDU are all in one or more of Format 1, Format 2, or Format 4. In other words, it can be considered that the second message does not include the second identifier, and it can be determined that the contention conflict of the terminal device is not resolved.
  • the terminal device may associate the MAC CE including the second identifier with the first message To determine whether the contention conflict of the terminal device is resolved.
  • the MAC CE includes N bits, where M is greater than or equal to N,
  • the terminal device may match the N bits of the CCCH SDU with the N bits of the MAC CE to determine whether the contention conflict of the terminal device is resolved. For example, if the N bits of the CCCH SDU and the If the N bits of the MAC CE are the same, it can be determined that the uplink information matches the second identifier; or, if at least one of the N bits of the CCCH SDU and the N bits of the MAC CE is different, then It is determined that the second identifier does not match the uplink message. Wherein, if the M is greater than N, the N bits of the CCCH SDU are the first N bits of the CCCH SDU.
  • the N is 48.
  • the second message further includes at least one of the following information:
  • Backoff indicator used to indicate whether to fall back to four-step random access
  • C-RNT Cell Radio Network Temporary Identifier
  • TC-RNTI Temporary Cell Radio Network Temporary Identity
  • At least one random access preamble identifier (Random Access Preamble Identify, RAPID).
  • the MAC PDU may be composed of one or more MAC subPDUs and possible padding bits, as shown in FIG. 3.
  • the MAC PDU shown in FIG. 3 is only a possible structure. In other embodiments, the MAC PDU may only include part of the MAC subPDU, which is not limited in the embodiment of the present application.
  • the MAC sub-packet header may be a BI sub-packet header for carrying BI, and the BI may be used to indicate whether to fall back to four-step random access.
  • the BI sub-packet header includes an extension field (E), a type field (T), two reserved fields (R), and a BI value.
  • the MAC sub-packet header may be a RAPID sub-packet header.
  • the RAPID sub-packet header may include an E, a T, and a RAPID value.
  • the RAPID is the preamble index in the first message received by the network device.
  • the RAPID sub-packet header may also include information such as the length information of the CCCH and SDU and logical channel identification (Logical Channel Identify, LCID), which is not limited in the embodiment of the present application.
  • information such as the length information of the CCCH and SDU and logical channel identification (Logical Channel Identify, LCID), which is not limited in the embodiment of the present application.
  • the network device can instruct the terminal device whether to fall back to four-step random access through RAPID.
  • the network device may receive the first message sent by the terminal device, and obtain the preamble index from the first message. Further, the network device may obtain the preamble index in the first message and the solution of the uplink message. In this case, the content carried in the second message is determined. For example, if the network device successfully demodulates the preamble index but fails to demodulate the uplink message, in this case, the network device may carry at least One RAPID, the at least one RAPID may correspond to the preamble index sent by the terminal device whose uplink message is not successfully demodulated, and is used to instruct the terminal device corresponding to the at least one RAPID to fall back to the four-step random access process.
  • the terminal device may determine whether to send the third message (corresponding to MSG3) to the network device according to at least one RAPID included in the MAC PDU and the preamble ID in the first message. For example, if there is a RARID in the at least one RAPID that is consistent with the preamble index in the first message, it is determined to send the third message. Further, the terminal device is in the uplink indicated by the MAC PDU. The third message is sent on the resource (UL grant); or, if the at least one RAPID is inconsistent with the preamble index in the first message, it is determined not to send the third message.
  • FIG. 6 is a schematic structural diagram of a MAC RAR in an embodiment of the present application. As shown in Figure 6, MAC RAR can include:
  • Reserved bit R (for example, 1 bit);
  • Time alignment command TAC
  • Uplink authorization (UL grant);
  • TAC is used to specify the amount of time adjustment required for the uplink synchronization of the terminal equipment, for example, it may include 12 bits, and the UL grant is used to indicate the uplink resources allocated to the MSG3.
  • a network device detects preamble indexes from multiple terminal devices on the same PRACH resource, one MAC PDU can respond to the random access requests of these terminal devices, and each preamble index response corresponds to a RAR.
  • the corresponding RAR can be multiplexed in the same MAC PDU.
  • the terminal devices in the non-connected state use the same PRACH resource to send the preamble index (the preamble index is not necessarily the same), these terminal devices can listen to the same RA-RNTI scrambled PDCCH and receive the same MAC PDU , Can indicate different RAR through different RAPID.
  • the formats of the above BI sub-packet header, RAPID sub-packet header and RAR are only examples.
  • the format can also be flexibly adjusted according to the actual carried information.
  • Information such as the SDU data length and LCID can also be carried in the sub-packet header of other MAC sub-PDU In the embodiment of the present application, this is not limited.
  • the MAC PDU includes a first MAC sub-PDU and a second MAC sub-PDU
  • the first MAC sub-PDU includes a second identifier
  • the second MAC sub-PDU includes The RAPID
  • the first MAC sub-PDU is located before the second MAC sub-PDU.
  • the MAC subPDU used to carry the second identifier is located before the MAC subPDU carrying RAPID.
  • the MAC PDU includes a third MAC sub-PDU
  • the third MAC sub-PDU includes BI
  • the third MAC sub-PDU is the first MAC sub-PDU of the MAC PDU .
  • the BI sub-packet header is the first sub-packet header of the MAC PDU.
  • the MAC PDU includes a fourth MAC sub PDU, the fourth MAC sub PDU includes padding bits, and the fourth MAC sub PDU is the last MAC sub PDU of the MAC PDU .
  • the MAC subPDU including the padding bits is the last sub-packet header of the MAC PDU.
  • the uplink timing TAC is included in the MAC CE of the MAC subPDU;
  • the C-RNT or TC-RNTI is included in the MAC CE of the MAC subPDU;
  • the uplink timing and the C-RNT or TC-RNTI are included in the same MAC CE.
  • FIG. 7 is a schematic flowchart of a wireless communication method 300 according to another embodiment of the present application.
  • the method 300 may be executed by a network device in the communication system shown in FIG. 1. As shown in FIG. 7, the method 300 includes The following content:
  • the network device receives a first message sent by the terminal device, where the first message includes a preamble identifier ID for random access and an uplink message, and the uplink information includes the first identifier.
  • S320 The network device determines a second message to reply to the terminal device according to the decoding situation of the first message.
  • the decoding situation of the first message may include:
  • terminal devices may use the same PRACH resource to send the preamble index, and different terminal devices may select the same RPACH resource and the same preamble index, the network device cannot distinguish which UE is based on the preamble index.
  • the network device can reply to RAR, namely MSG2, so that for two-step RACH terminal devices, it can fall back to four-step RACH, that is, send MSG3, which is the uplink message, to the network device.
  • RAR namely MSG2
  • MSG3 which is the uplink message
  • the network device may send first indication information to the terminal device to instruct the terminal device to retransmit the first message.
  • the network device may also send second indication information for Instruct the terminal device to stop monitoring the PDCCH, so as to retransmit the first message as soon as possible.
  • the network device can distinguish whether the terminal device is a terminal device that initiates a four-step random access or a two-step random access process, for example, different PRACH resources can be used.
  • the network device may send first indication information to the terminal device for instructing the terminal device to retransmit the first message, and may also send second indication information to the terminal device, Used to instruct the terminal device to stop monitoring the PDCCH.
  • the terminal device only needs to perform a normal random access process.
  • the network device may send a second message to the terminal device, the second message includes a second identifier, and the second identifier is a contention resolution ID of the terminal device.
  • the first identifier can be used to indicate the connection state of the terminal device. Therefore, after the network device receives the first message, it can determine the location of the terminal device according to the first identifier in the first message. In the connection state, the content carried in the second message can be further selected. For example, for a terminal device that resolves a contention conflict, the network device can carry a matching second identifier in the response message to indicate that the terminal device has resolved the contention conflict.
  • the network device may instruct the terminal device to retransmit the first message, and at the same time, may also instruct the terminal device to stop monitoring the PDCCH.
  • the second message is a media access control MAC protocol data unit PDU
  • the MAC PDU includes one or more MAC sub-PDUs
  • the MAC sub-PDU is one of the following formats Species:
  • the MAC sub-PDU only includes a MAC sub-packet header
  • the MAC sub-PDU includes a MAC sub-packet header and a MAC service data unit SDU;
  • the MAC sub-PDU includes a MAC sub-packet header and a MAC control element CE;
  • the MAC sub-PDU includes a MAC sub-packet header and padding bits.
  • the uplink message is a common control channel CCCH service data unit SDU, including M bits
  • the second identifier is included in the MAC CE and includes N bits, where M Greater than or equal to N, the N bits of the MAC CE are used to match the N bits of the CCCH SDU to determine whether the contention conflict is resolved;
  • the N bits of the CCCH SDU are the first N bits of the CCCH SDU.
  • the N is 48.
  • the MAC subPDU in the second message is in one of the following formats, it is determined that the second message does not include the second identifier:
  • the MAC sub-PDU only includes a MAC sub-packet header
  • the MAC sub-PDU includes a MAC sub-packet header and a MAC service data unit SDU;
  • the MAC sub-PDU includes a MAC sub-packet header and padding bits.
  • the second message further includes at least one of the following information:
  • Back-off instruction BI used to indicate whether to back-off to four-step random access
  • At least one random access preamble identifies RAPID.
  • the MAC sub-PDU includes a BI sub-packet header for carrying the BI;
  • the MAC sub-PDU includes a RAPID sub-packet header, and the RAPID sub-packet header is used to carry RAPID.
  • the RAPID sub-packet header further includes the SDU data length and the logical channel identifier LCID.
  • the RAR message includes a first MAC subPDU and a second MAC subPDU, wherein the first MAC subPDU includes a second identifier, and the second MAC subPDU includes all Said RAPID,
  • the first MAC sub-PDU is located before the second MAC sub-PDU.
  • the MAC PDU includes a third MAC sub-PDU, and the third MAC sub-PDU includes BI,
  • the third MAC sub-PDU is the first MAC sub-PDU of the MAC PDU.
  • the RAR includes a fourth MAC subPDU, and the fourth MAC subPDU includes padding bits,
  • the fourth MAC sub-PDU is the last MAC sub-PDU of the MAC PDU.
  • the uplink timing is included in the MAC CE of the MAC subPDU;
  • the C-RNT or TC-RNTI is included in the MAC CE of the MAC subPDU;
  • the uplink timing and the C-RNT or TC-RNTI are included in the same MAC CE.
  • the first identifier is at least one of the following:
  • I-RNTI used to identify the context information of the terminal device in the inactive state
  • FIG. 8 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
  • the terminal device 400 includes:
  • the communication module 410 is configured to send a first message to a network device, where the first message includes a preamble identifier ID used for random access and an uplink message, and the uplink message includes the first identifier;
  • the determining module 420 is configured to determine, according to the first identifier, the target radio network temporary identifier RNTI used for monitoring the physical downlink control channel PDCCH;
  • the communication module 410 is also used to monitor the PDCCH scrambled by the target RNTI;
  • the determining module 420 is further configured to determine whether the contention conflict is resolved according to the second message scheduled by the PDCCH and the uplink message.
  • the determining module 420 is specifically configured to:
  • the first identifier is the first cell radio network temporary identifier C-RNTI, determine the first C-RNTI as the target RNTI; or
  • the random access RA-RNTI is determined as the target RNTI.
  • the terminal device 400 further includes:
  • a processing module configured to start a first timer after sending the first message to the network device
  • the communication module 410 is also used for:
  • the processing module is specifically configured to:
  • the determining module 420 is specifically configured to:
  • the second message does not include the second identifier, it is determined that the competition conflict is not resolved.
  • the second message includes a second identifier, and the second identifier does not match the uplink message, it is determined that the contention conflict is not resolved;
  • the second message includes a second identifier, and the second identifier matches the uplink message, determine that the contention conflict is resolved;
  • the second identifier is the contention resolution ID of the terminal device.
  • the second message is a media access control MAC protocol data unit PDU
  • the MAC PDU includes one or more MAC sub-PDUs
  • the MAC sub-PDU is one of the following formats Species:
  • the MAC sub-PDU only includes a MAC sub-packet header
  • the MAC sub-PDU includes a MAC sub-packet header and a MAC service data unit SDU;
  • the MAC sub-PDU includes a MAC sub-packet header and a MAC control element CE;
  • the MAC sub-PDU includes a MAC sub-packet header and padding bits.
  • the uplink message is a common control channel CCCH service data unit SDU, including M bits
  • the second identifier is included in the MAC CE of the MAC subPDU and includes N bits , Where M is greater than or equal to N,
  • the matching of the second identifier with the uplink message includes:
  • the N bits of the CCCH SDU are the same as the N bits of the MAC CE;
  • the mismatch between the second identifier and the uplink message includes:
  • At least one bit is different between the N bits of the CCCH SDU and the N bits of the MAC CE;
  • the N bits of the CCCH SDU are the first N bits of the CCCH SDU.
  • the N is 48.
  • the determining module is further configured to:
  • the MAC subPDU in the second message is in one of the following formats, it is determined that the second identifier is not included in the second message:
  • the MAC sub-PDU only includes a MAC sub-packet header
  • the MAC sub-PDU includes a MAC sub-packet header and a MAC service data unit SDU;
  • the MAC sub-PDU includes a MAC sub-packet header and padding bits.
  • the second message further includes at least one of the following information:
  • Back-off instruction BI used to indicate whether to back-off to four-step random access
  • At least one random access preamble identifies RAPID.
  • the MAC sub-PDU includes a BI sub-packet header for carrying the BI;
  • the MAC sub-PDU includes a RAPID sub-packet header, and the RAPID sub-packet header is used to carry RAPID.
  • the RAPID sub-packet header further includes the SDU data length and the logical channel identifier LCID.
  • the RAR message includes a first MAC subPDU and a second MAC subPDU, wherein the first MAC subPDU includes a second identifier, and the second MAC subPDU includes all Said RAPID,
  • the first MAC sub-PDU is located before the second MAC sub-PDU.
  • the MAC PDU includes a third MAC sub-PDU, and the third MAC sub-PDU includes BI,
  • the third MAC sub-PDU is the first MAC sub-PDU of the MAC PDU.
  • the RAR includes a fourth MAC subPDU, and the fourth MAC subPDU includes padding bits,
  • the fourth MAC sub-PDU is the last MAC sub-PDU of the MAC PDU.
  • the uplink timing is included in the MAC CE of the MAC subPDU;
  • the C-RNT or TC-RNTI is included in the MAC CE of the MAC subPDU;
  • the uplink timing and the C-RNT or TC-RNTI are included in the same MAC CE.
  • the determining module 420 is further configured to:
  • the determining module 420 is specifically configured to:
  • the at least one RAPID is inconsistent with the preamble ID in the first message, it is determined not to send the third message.
  • the second message includes the uplink resource allocated by the network device to the terminal device, and the communication module 410 is further configured to:
  • the first identifier is at least one of the following:
  • I-RNTI used to identify the context information of the terminal device in the inactive state
  • the determining module 420 is further configured to:
  • the determining module 420 is specifically configured to:
  • the RA-RNTI is determined according to the random access resource used for sending the first message and the first correspondence, where the first correspondence is the correspondence between the random access resource and the RA-RNTI.
  • terminal device 400 may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 400 are to implement the method shown in FIG. 2 respectively.
  • the corresponding process of the terminal equipment in 200 will not be repeated here.
  • Fig. 9 is a schematic block diagram of a network device according to an embodiment of the present application.
  • the network device 500 of FIG. 9 includes:
  • the communication module 510 is configured to receive a first message sent by a terminal device, where the first message includes a preamble identifier ID used for random access and an uplink message, and the uplink information includes a first identifier;
  • the determining module 520 is configured to determine a second message to reply to the terminal device according to the decoding situation of the first message.
  • the communication module 510 is further configured to:
  • the communication module 510 is further configured to:
  • the communication module 510 is further configured to:
  • a second message is sent to the terminal device, the second message includes a second identifier, and the second identifier is a contention resolution ID of the terminal device.
  • the second message is a media access control MAC protocol data unit PDU
  • the MAC PDU includes one or more MAC sub-PDUs
  • the MAC sub-PDU is one of the following formats Species:
  • the MAC sub-PDU only includes a MAC sub-packet header
  • the MAC sub-PDU includes a MAC sub-packet header and a MAC service data unit SDU;
  • the MAC sub-PDU includes a MAC sub-packet header and a MAC control element CE;
  • the MAC sub-PDU includes a MAC sub-packet header and padding bits.
  • the uplink message is a common control channel CCCH service data unit SDU, including M bits
  • the second identifier is included in the MAC CE and includes N bits, where M Greater than or equal to N, the N bits of the MAC CE are used to match the N bits of the CCCH SDU to determine whether the contention conflict is resolved;
  • the N bits of the CCCH SDU are the first N bits of the CCCH SDU.
  • the N is 48.
  • the second message does not include the second identifier:
  • the MAC sub-PDU only includes a MAC sub-packet header
  • the MAC sub-PDU includes a MAC sub-packet header and a MAC service data unit SDU;
  • the MAC sub-PDU includes a MAC sub-packet header and padding bits.
  • the second message further includes at least one of the following information:
  • Back-off instruction BI used to indicate whether to back-off to four-step random access
  • At least one random access preamble identifies RAPID.
  • the MAC sub-PDU includes a BI sub-packet header for carrying the BI;
  • the MAC sub-PDU includes a RAPID sub-packet header, and the RAPID sub-packet header is used to carry RAPID.
  • the RAPID sub-packet header further includes the SDU data length and the logical channel identifier LCID.
  • the RAR message includes a first MAC subPDU and a second MAC subPDU, wherein the first MAC subPDU includes a second identifier, and the second MAC subPDU includes all Said RAPID,
  • the first MAC sub-PDU is located before the second MAC sub-PDU.
  • the MAC PDU includes a third MAC sub-PDU, and the third MAC sub-PDU includes BI,
  • the third MAC sub-PDU is the first MAC sub-PDU of the MAC PDU.
  • the RAR includes a fourth MAC subPDU, and the fourth MAC subPDU includes padding bits,
  • the fourth MAC sub-PDU is the last MAC sub-PDU of the MAC PDU.
  • the uplink timing is included in the MAC CE of the MAC subPDU;
  • the C-RNT or TC-RNTI is included in the MAC CE of the MAC subPDU;
  • the uplink timing and the C-RNT or TC-RNTI are included in the same MAC CE.
  • the first identifier is at least one of the following:
  • I-RNTI used to identify the context information of the terminal device in the inactive state
  • the network device 500 may correspond to (for example, may be configured in or be itself) the network device described in the foregoing method 300, and each module or unit in the network device 500 may be used to execute the network in the foregoing method 300.
  • each action or processing procedure performed by the device detailed description is omitted here to avoid redundant description.
  • FIG. 10 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application.
  • the communication device 600 shown in FIG. 10 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 600 may further include a memory 620.
  • the processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment 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, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 600 may specifically be a network device in an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, details are not repeated here. .
  • the communication device 600 may specifically be a mobile terminal/terminal device of an embodiment of the application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the application.
  • I won’t repeat it here.
  • FIG. 11 is a schematic structural diagram of a chip of an embodiment of the present application.
  • the chip 700 shown in FIG. 11 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 may call and run a computer program from the memory 720 to implement the method in the embodiment 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 may control the input interface 730 to communicate with other devices or chips, and specifically, may 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, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in the various methods of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the network device in the various methods of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip.
  • FIG. 12 is a schematic block diagram of a communication system 800 according to an embodiment of the present application. As shown in FIG. 12, the communication system 800 includes a terminal device 810 and a network device 820.
  • the terminal device 810 can be used to implement the corresponding function implemented by the terminal device in the above method
  • the network device 820 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, it will not be repeated here. .
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the 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 (ASIC), a ready-made 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 ready-made programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, 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 embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase 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 random access memory
  • SRAM 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
  • ESDRAM enhanced synchronous dynamic random access memory
  • Synchlink DRAM SLDRAM
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment 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 rate 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), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application For the sake of brevity, I will not repeat it here.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For brevity, I won't repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It 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 they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each 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 function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the 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 make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment 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 .

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Abstract

本申请实施例公开了一种无线通信的方法,终端设备和网络设备,该方法包括:终端设备向网络设备发送第一消息,所述第一消息包括用于随机接入的前导码标识ID和上行消息,所述上行消息包括第一标识;所述终端设备根据所述第一标识,确定监听物理下行控制信道PDCCH所使用的目标无线网络临时标识符RNTI;所述终端设备监听所述目标RNTI加扰的PDCCH;根据所述PDCCH调度的第二消息以及所述上行消息,确定竞争冲突是否解决。

Description

无线通信的方法、终端设备和网络设备 技术领域
本申请实施例涉及通信领域,并且更具体地,涉及无线通信的方法、终端设备和网络设备。
背景技术
在5G新无线(New Radio,NR)系统中,为了降低随机接入时延,考虑采用两步随机接入过程,此情况下,这两步随机过程所发送的消息中包括哪些内容,以及,如何解决竞争冲突解决问题是一项亟需解决的问题。
发明内容
提供了一种无线通信的方法、终端设备和网络设备,能够解决两步随机接入中的冲突问题。
第一方面,提供了一种无线通信的方法,该方法包括:终端设备向网络设备发送第一消息,所述第一消息包括用于随机接入的前导码标识ID和上行消息,所述上行消息包括第一标识;所述终端设备根据所述第一标识,确定监听物理下行控制信道PDCCH所使用的目标无线网络临时标识符RNTI;所述终端设备监听所述目标RNTI加扰的PDCCH;根据所述PDCCH调度的第二消息以及所述上行消息,确定竞争冲突是否解决
第二方面,提供了一种无线通信的方法,包括:网络设备接收终端设备发送的第一消息,所述第一消息包括用于随机接入的前导码标识ID和上行消息,所述上行信息包括第一标识;所述网络设备根据所述第一消息的解码情况,确定向所述终端设备回复的第二消息。
第三方面,提供了一种终端设备,用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。具体地,该终端设备包括用于执行上述第一方面或第一方面的任一可能的实现方式中的方法的单元。
第四方面,提供了一种网络设备,用于执行上述第二方面或第二方面的任意可能的实现方式中的方法。具体地,该网络设备包括用于执行上述第二方面或第二方面的任一可能的实现方式中的方法的单元。
第五方面,提供了一种终端设备,该终端设备包括:包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,执行上述第一方面或其各实现方式中的方法。
第六方面,提供了一种网络设备,该网络设备包括:包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,执行上述第二方面或其各实现方式中的方法。
第七方面,提供了一种芯片,用于实现上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
具体地,该芯片包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有该芯片的设备执行如上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第八方面,提供了一种计算机可读存储介质,用于存储计算机程序,该计算机程序使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第九方面,提供了一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第十方面,提供了一种计算机程序,当其在计算机上运行时,使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
基于上述技术方案,终端设备可以在两步随机接入中向网络设备发送第一消息,在该第一消息中包括随机接入前导码ID以及上行消息,该上行信息中可以包括第一标识,进一步可以根据该第一标识监听特定的RNTI加扰的PDCCH,从而可以根据该PDCCH所调度的第二消息和该上行消息,确定竞争冲突是否解决。
附图说明
图1示出了本申请实施例一个应用场景的示意图。
图2示出了本申请实施例的无线通信的方法的示意性流程图。
图3示出了根据本申请实施例的MAC PDU的格式一例示意图。
图4示出了MAC子包头格式的一例示意图。
图5示出了MAC子包头格式的另一例示意图。
图6示出了MAC RAR格式的一例示意图。
图7示出了本申请另一实施例的无线通信的方法的示意性流程图。
图8示出了本申请实施例的终端设备的示意性框图。
图9示出了本申请实施例的网络设备的示意性框图。
图10示出了本申请实施例的通信设备的示意性框图。
图11示出了本申请实施例的芯片的示意性框图。
图12示出了本申请实施例的通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
本申请实施例的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)系统、LTE频分双工(Frequency Division Duplex,FDD)系统、LTE时分双工(Time Division Duplex,TDD)、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access,WiMAX)通信系统或5G系统等。
示例性的,本申请实施例应用的通信系统100如图1所示。该通信系统100可以包括网络设备110,网络设备110可以是与终端设备120(或称为通信终端、终端)通信的设备。网络设备110可以为特定的地理区域提供通信覆盖,并且可以与位于该覆盖区域内的终端设备进行通信。可选地,该网络设备110可以是GSM系统或CDMA系统中的基站(Base Transceiver Station,BTS),也可以是WCDMA系统中的基站(NodeB,NB),还可以是LTE系统中的演进型基站(Evolutional Node B,eNB或eNodeB),或者是云无线接入网络(Cloud Radio Access Network,CRAN)中的无线控制器,或者该网络设备可以为移动交换中心、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)中的网络设备等。
该通信系统100还包括位于网络设备110覆盖范围内的至少一个终端设备120。作为在此使用的“终端设备”包括但不限于经由有线线路连接,如经由公共交换电话网络(Public Switched Telephone Networks,PSTN)、数字用户线路(Digital Subscriber Line,DSL)、数字电缆、直接电缆连接;和/或另一数据连接/网络;和/或经由无线接口,如,针对蜂窝网络、无线局域网(Wireless Local Area Network,WLAN)、诸如DVB-H网络的数字电视网络、卫星网络、AM-FM广播发送器;和/或另一终端设备的被设置成接收/发送通信信号的装置;和/或物联网(Internet of Things,IoT)设备。被设置成通过无线接口通信的终端设备可以被称为“无线通信终端”、“无线终端”或“移动终端”。移动终端的示例包括但不限于卫星或蜂窝电话;可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal Communications System,PCS)终端;可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global Positioning System,GPS)接收器的PDA;以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。终端设备可以指接入终端、用户设备(User Equipment,UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的终端设备或者未来演进的PLMN中的终端设备等。
可选地,终端设备120之间可以进行终端直连(Device to Device,D2D)通信。
可选地,5G系统或5G网络还可以称为新无线(New Radio,NR)系统或NR网络。
图1示例性地示出了一个网络设备和两个终端设备,可选地,该通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备,本申请实施例对此不做限定。
可选地,该通信系统100还可以包括网络控制器、移动管理实体等其他网络实体,本申请实施例对此不作限定。
应理解,本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信 系统100为例,通信设备可包括具有通信功能的网络设备110和终端设备120,网络设备110和终端设备120可以为上文所述的具体设备,此处不再赘述;通信设备还可包括通信系统100中的其他设备,例如网络控制器、移动管理实体等其他网络实体,本申请实施例中对此不做限定。
应理解,本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
在5G NR系统中,基于竞争的随机接入过程可采用了类似于LTE的四步随机接入过程(MSG 1-MSG 4),具体地:
在MSG 1中,终端设备向网络设备发送随机接入前导码(或称前导序列)标识(preamble index)。
在MSG 2中,网络设备检测到终端设备发送的preamble index之后向终端设备发送随机接入响应(random access response,RAR)以告知终端设备在发送MSG3时可以使用的上行资源信息,为终端设备分配临时无线网络临时标识符(Radio Network Temporary Identity,RNTI),给终端设备提供定时对齐命令(time alignment command)等,如果终端设备在RAR时间窗内没有检测到RAR,终端设备进行preamble index的重传,如果终端设备在RAR时间窗内检测到RAR,终端设备根据RAR指示的上行授权(UL grant)资源进行MSG3的传输。其中,网络设备在发送RAR时使用的随机接入无线网络临时标识符(Random Access Radio Network Temporary Identity,RA-RNTI)是根据PRACH的时频资源的位置计算的,一个RA-RNTI加扰的物理下行控制信道(Physical Downlink Control Channel,PDCCH)对应的物理下行共享信道(Physical Downlink Shared Channel,PDSCH)中可以包括对于多个前导码的响应。
在MSG 3中,终端设备接收到RAR之后,在RAR所指定的上行资源中发送MSG3消息,该步骤允许混合自动请求重传(Hybrid Automatic Repeat reQuest,HARQ)重传。
在MSG 4中,网络设备向终端设备发送MSG4消息,其中包括竞争解决消息,该步骤允许HARQ重传。终端设备接收到网络设备发送的MSG 4时,会检测MSG 4中是否包括终端设备发送的MSG3消息中的部分内容,即冲突解决ID(Contention Resolution ID)。若包括则表明终端设备随机接入过程成功,否则认为随机过程失败,终端设备需要再次从MSG 1开始发起随机接入过程。
或者,如果MSG3包含了小区无线网络临时标识符(Cell Radio Network Temporary Identity,C-RNTI)媒体接入控制(Media Access Control,MAC)控制元素(Control Element,CE),则判断MSG4是否是由C-RNTI加扰的PDCCH调度的。如果UE盲检到C-RNTI加扰的PDCCH,则随机接入过程成功,否则认为随机接入过程失败,终端设备需要再次从MSG 1开始发起随机接入过程。
由此可见,四步随机接入过程的时延较大,无法满足5G NR中对时延的要求,因此,考虑采用两步随机接入过程,以满足5G NR中对时延的要求。
具体地,在第一步骤中,终端设备向网络设备发送msgA,该msgA可以包括前述的MSG1和MSG3;
在第二步骤中,网络设备向终端设备发送msgB,该msgB可以包括前述的MSG2和MSG4。
但是,msgA和msgB具体包括什么内容,以及如何进行竞争冲突解决是个亟需解决的问题。
有鉴于此,本申请实施例提供了一种两步随机接入的竞争解决方法,能够解决两步随机接入中的冲突问题。
图2是根据本申请实施例的无线通信的方法的示意性流程图,如图2所示,该方法200可以包括:
S210,终端设备向网络设备发送第一消息,所述第一消息包括用于随机接入的前导码ID和上行消息,所述上行消息包括第一标识;
S220,所述终端设备根据所述第一标识,确定监听物理下行控制信道PDCCH所使用的目标无线网络临时标识符RNTI;
S230,所述终端设备监听所述目标RNTI加扰的PDCCH;
S240,根据所述PDCCH调度的第二消息以及所述上行消息,确定竞争冲突是否解决。
可选地,在本申请实施例中,在发送所述第一消息之前,所述终端设备可以确定用于发送所述第一消息的资源,具体包括:用于发送前导码ID(preamble index)的物理随机接入信道(Physical Random Access Channel,PRACH)资源,以及用于发送所述上行消息(或称paload)的物理上行共享信道(Physical Uplink Shared Channel,PUSCH)资源。进一步地,该终端设备可以在PRACH资源上传输preamble index,以及在PUSCH资源上传输上行消息。
可选地,在本申请实施例中,所述PRACH资源和所述PUSCH资源可以具有对应关系,即确定该PRACH资源后,可以根据该对应关系,确定该PUSCH资源。
在本申请实施例中,所述上行消息中包括第一标识,根据触发随机接入的事件不同,该上行消息包括的内容具有一定差异。
可选地,在一些实施例中,触发随机接入的事件可以包括:
事件1:空闲态的初始随机接入(RRC Connection Re-establishment procedure)),此情况下,该上行消息中不包括C-RNTI;
事件2:RRC连接重建过程(RRC Connection Re-establishment procedure),此情况下,该上行消息中不包括C-RNTI
事件3:切换(Handover),此情况下,该上行消息包括C-RNTI;
事件4:当上行失步时,有下行或上行数据到达(DL or UL data arrival during RRC_CONNECTED when UL synchronisation status is"non-synchronised"),该上行消息包括C-RNTI;
事件5:在RRC连接状态有上行数据到达,并且没有用于调度请求(Scheduling Request,SR)的PUCCH资源(UL data arrival during RRC_CONNECTED when there are no PUCCH resources for SR available),此情况下,该上行消息包括C-RNTI;
事件6:SR失败(SR failure),此情况下,该上行消息包括C-RNTI;
事件7:RRC在同步重配置时的请求(Request by RRC upon synchronous reconfiguration),此情况下,该上行消息包括C-RNTI;
事件8,从RRC非激活状态的转换(Transition from RRC_INACTIVE),此情况下,该上行消息中不包括C-RNTI。
事件9,在添加辅助小区(Scell)时建立时间对齐(To establish time alignment at SCell addition),此情况下,该上行消息包括C-RNTI;
事件10,请求其他系统消息(System Information,SI)(Request for Other SI),此情况下,该上行消息包括C-RNTI
事件11,波束失败恢复(Beam failure recovery),此情况下,该上行消息包括C-RNTI。
也就是说,若终端设备处于RRC连接态,则该终端设备可以获知C-RNTI,此情况下,该上行消息中的该第一标识可以为C-RNTI,例如,该C-RNTI可以包含在该上行消息的媒体接入控制(Media Access Control,MAC)控制元素(Control Element,CE)中。
或者,若终端设备处于非连接状态,例如,RRC空闲态或RRC非激活状态,在这些状态下触发的随机接入过程,该终端设备可以不能获知该C-RNTI,此情况下,该上行消息可以包括该公共控制信道(Common control channel,CCCH)服务数据单元(service data unit,SDU),该CCCH SDU可以包括信令无线承载(Signaling Radio Bearers,SRB)0中传输的无线资源控制(Radio Resource Control,RRC)消息,例如,RRC建立请求(RRCSetupRequest),RRC恢复请求(RRCResumeRequest),RRC重建立请求(RRCReestablishmentRequest),RRC系统消息请求(RRCSystemInfoRequest)等RRC消息。
在一些实施例中,该CCCH SDU中可以包括该第一标识,此情况下的该第一标识与C-RNTI不同,作为示例而非限定,所述第一标识可以为以下中的一种:
固定比特数的随机数;
下一代5G短临时移动用户标识(Next generation 5G Short Temporary Mobile Subscription Identifier,NG-5G-S-TMSI);
I-RNTI,用于标识处于非激活状态的终端设备的上下文;
短I-RNTI。
因此,该第一标识可以用于指示终端设备所处的连接状态,网络设备接收到该第一消息之后,可以根据第一消息中的该第一标识确定终端设备所处的连接状态,进一步可以选择不同的响应方式,例如,对于竞争冲突解决的终端设备,网络设备可以在响应消息中携带一个匹配的标识指示终端设备其竞争冲突解决。例如,若该第一标识为该C-RNTI,该终端设备盲检到C-RNTI加扰的PDCCH,则确定该终端设备的竞争冲突解决。
可选地,在本申请一些实施例中,所述终端设备根据可以根据自身所处的连接状态,监听相应的RNTI加扰的PDCCH。
例如,若该终端设备处于连接状态,该终端设备可以获知该C-RNTI,因此,所述终端设备可以监听所述第一C-RNTI加扰的PDCCH;或
又例如,若该终端设备处于非连接状态,该终端设备可以不能获知该C-RNTI,此情况下,所述终端设备可以监听除C-RNTI以外的其他RNTI,例如,随机接入RA-RNTI加扰的PDCCH。
可选地,在本申请实施例中,所述RA-RNTI可以根据发送preamble index的PRACH资源确定, 例如,通过如下公式计算:
RA-RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id。
其中,s_id为PRACH资源的第一个OFDM符号的索引(0≤s_id<14);
t_id为系统帧中PRACH资源的第一个时隙的索引(0≤t_id<80);
f_id是频域中的PRACH时机的索引(0≤f_id<8);
ul_carrier_id是用于preamble index传输的UL载波。
从该RA-RNTI的确定方式可知,由于终端设备发送的preamble index的时频位置是确定的,网络设备在解码preamble index时,也获得了发送该preamble index的PRACH资源的时频位置,进而可以在终端设备的竞争冲突解决时,可以使用相应的RA-RNTI加扰PDCCH。
需要注意的是,所述终端设备确定的所述RA-RNTI的方法可以和现有的确定方式相同,或者也可以不同,本申请实施例对此不做具体限定,例如,所述终端设备可以根据用于传输所述第一消息的资源和/或用于传输所述前导序列的资源确定的所述RA-RNTI。
可选地,在一些实施例中,在S210之后,所述方法200还可以包括:
所述终端设备启动第一定时器或者第一窗口;
进一步地,在所述第一定时器的时长范围内,所述终端设备可以根据所述第一标识,监听所述相应RNTI加扰的PDCCH。
例如,若所述第一标识为C-RNTI,则在该第一定时器超时前或者在所述第一窗口内,所述终端设备可以监听C-RNTI加扰的PDCCH,或者,若所述第一标识为其他信息,在该第一定时器超时前,所述终端设备可以监听RA-RNTI加扰的PDCCH。
可选地,在一些实施例中,所述终端设备可以在发送完所述随机接入前导码之后,开启所述第一定时器,或者,所述终端设备也可以在发送完所述上行消息之后,开始所述第一定时器,本申请实施例对于该第一定时器的开启时机不作具体限定。
可选地,在本申请一个实施例中,若所述第一标识为C-RNTI,所述终端设备可以在一个时间窗(该第一定时器未失效的时间范围内)内,监听该C-RNTI加扰的PDCCH,若成功监听到所述C-RNTI加扰的PDCCH,确定该终端设备的竞争冲突解决;或在该时间窗内,该终端设备都没有监听到C-RNTI加扰的该PDCCH,确定该终端设备的竞争冲突未解决。
可选地,在本申请另一个实施例中,若所述第一标识为除C-RNTI以外的其他信息,例如,随机数或NG-5G-S-TMSI,所述终端设备在该第一定时器超时前,可以监听RA-RNTI加扰的PDCCH,若成功监听到RA-RNTI加扰的PDCCH,则根据该PDCCH所调度的第二消息,判断竞争冲突是否解决,或者,若在定时器超时前,该终端设备都未监听到RA-RNTI加扰的PDCCH,确定竞争冲突未解决。
可选地,在一些实施例中,所述根据所述PDCCH调度的第二消息以及所述上行消息,确定竞争冲突是否解决,包括:
若所述第二消息中不包括第二标识,确定竞争冲突未解决;或
若所述第二消息包括第二标识,且所述第二标识与所述上行消息不匹配,确定竞争冲突未解决;或
若所述第二消息中包括第二标识,且所述第二标识与所述上行消息匹配,确定竞争冲突解决;
其中,所述第二标识为终端设备竞争解决ID(Contention Resolution Identify)。
应理解,在本申请实施例中,所述终端设备可以盲检多个RA-RNTI加扰的PDCCH,例如,若该终端设备盲检到RA-RNTI加扰的第一PDCCH,但是该第一PDCCH调度的第二消息中的第二标识和该第一消息中的上行信息不匹配,或该第二消息中不包括第二标识,该终端设备还可以继续盲检RA-RNTI加扰的PDCCH,直到定时器超时。
在本申请实施例中,所述第二消息包括该网络设备对该第一消息的随机接入响应,所述第二消息可以为一个或多个MAC协议数据单元(Protocol Data Unit,PDU),所述MAC PDU包括一个或多个MAC子PDU(MAC subPUD),在一些情况下,所述MAC子PDU为以下格式中的一种:
格式1:所述MAC子PDU只包括MAC子包头;
格式2:所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
格式3:所述MAC子PDU包括MAC子包头和MAC控制元素CE;
格式4:所述MAC子PDU包括MAC子包头和填充比特。
可选地,在一些实施例中,第二标识可以包含在该MAC CE中,也就是说,若该MAC PDU包括的MAC子PDU都为格式1,格式2或格式4中的一种或几种,可以认为该第二消息不包括第二标识,则可以确定该终端设备的竞争冲突未解决。
或者,若MAC PDU包括格式3类型的MAC子PDU,即MAC子PDU中包括MAC CE,该 MAC CE中包括第二标识,该终端设备可以将包括第二标识的MAC CE与该第一消息中的上行信息进行匹配以确定该终端设备的竞争冲突是否解决。
例如,若所述上行消息为CCCH SDU,包括M个比特,所述MAC CE包括N个比特,其中,M大于或等于N,
该终端设备可以将所述CCCH SDU的N个比特和所述MAC CE的N个比特进行匹配,以确定终端设备的竞争冲突是否解决,例如,若该所述CCCH SDU的N个比特和所述MAC CE的N个比特相同,可以确定该上行信息和所述第二标识匹配;或者,若所述CCCH SDU的N个比特和所述MAC CE的N个比特中至少有一个比特不同,则可以确定所述第二标识与所述上行消息不匹配。其中,若所述M大于N,所述CCCH SDU的N个比特为所述CCCH SDU的前N个比特。
可选地,在一些实施例中,所述N为48。
可选地,在一些实施例中,所述第二消息还包括以下中的至少一个信息:
回退指示(Backoff Indicator,BI),用于指示是否回退至四步随机接入;
上行定时;
小区无线网络临时标识符C-RNT或临时小区无线网络临时标识符(Temporary Cell Radio Network Temporary Identity,TC-RNTI);
至少一个随机接入前导码标识(Random Access Preamble Identify,RAPID)。
下面结合图3至图6,对本申请实施例的MAC PDU的结构进行说明。
在本申请实施例中,MAC PDU可以由一个或多个MAC subPDU以及可能存在的填充(padding)比特组成,如图3所示。
应理解,图3所示的MAC PDU仅为可能的一种结构,在其他实施例中,该MAC PDU可以只包括其中的部分MAC subPDU,本申请实施例对此不作限定。
可选地,在一些实施例中,所述MAC子包头可以为BI子包头,用于承载BI,该BI可以用于指示是否回退至四步随机接入,在一具体实施例中,如图4所示,该BI子包头包括一个扩展字段(E)、一个类型字段(T)、两个预留字段(R)以及BI值。
可选地,在一些实施例中,所述MAC子包头可以为RAPID子包头,在一具体实施例中,如图5所示,该RAPID子包头可以包括一个E、一个T以及RAPID值。其中,该RAPID为网络设备接收到的该第一消息中的preamble index。
可选地,在本申请实施例中,所述RAPID子包头还可以包括该CCCH SDU的长度信息和逻辑信道标识(Logical Channel Identify,LCID)等信息,本申请实施例对此不作限定。
在本申请实施例中,该网络设备可以通过RAPID指示终端设备是否回退至四步随机接入。
具体而言,所述网络设备可以接收终端设备发送的第一消息,从该第一消息中获知该preamble index,进一步地,该网络设备可以根据该第一消息中的preamble index和上行消息的解调情况,确定该第二消息中携带的内容,例如,若该网络设备解调成功该preamble index,未解调成功该上行消息,此情况下,该网络设备可以在该第二消息中携带至少一个RAPID,该至少一个RAPID可以对应上行消息未解调成功的终端设备发送的preamble index,用于指示该至少一个RAPID对应的终端设备回退至四步随机接入过程。
也就是说,所述终端设备可以根据MAC PDU包括的至少一个RAPID与所述第一消息中的所述前导码ID,确定是否发送向网络设备发送所述第三消息(对应于MSG3)。例如,若所述至少一个RAPID中存在一个RARID与所述第一消息中的所述preamble index一致,确定发送所述第三消息,进一步地,所述终端设备在所述MAC PDU所指示的上行资源(UL grant)上发送所述第三消息;或者,若所述至少一个RAPID与所述第一消息中的所述preamble index都不一致,确定不发送第三消息。
图6是本申请实施例的MAC RAR的示意性结构图。如图6所示,MAC RAR可以包括:
预留比特R(例如,1个比特);
时间对齐命令(Timing alignment command,TAC);
上行授权(UL grant);
C-RNTI或TC-RNTI。
其中,TAC用于指定终端设备上行同步所需要的时间调整量,例如,可以包括12比特,UL grant用于指示分配给MSG3的上行资源。
如果网络设备在同一PRACH资源上检测到来自多个终端设备的preamble index,则使用一个MAC PDU就可以对这些终端设备的随机接入请求进行响应,每个preamble index的响应对应一个RAR。换句话说,如果多个终端设备在同一PRACH资源(时频位置相同)发送preamble index,则对应的RAR可以复用在同一MAC PDU中。
也就是说,处于非连接态的终端设备若使用相同PRACH资源发送preamble index(preamble index不一定相同),则这些终端设备都可以监听相同的RA-RNTI加扰的PDCCH,并接收相同的MAC PDU,可以通过不同RAPID可以指示不同的RAR。
应理解,以上BI子包头,RAPID子包头和RAR的格式仅为示例,也可以根据实际承载的信息灵活调整其格式,该SDU数据长度和LCID等信息也可以承载在其他MAC子PDU的子包头中,本申请实施例对此不作限定。
可选地,在一些实施例中,若所述MAC PDU包括第一MAC子PDU和第二MAC子PDU,其中,所述第一MAC子PDU包括第二标识,所述第二MAC子PDU包括所述RAPID,
在所述MAC PDU中,所述第一MAC子PDU位于所述第二MAC子PDU前。
即用于承载第二标识的MAC subPDU位于承载RAPID的MAC subPDU之前。
可选地,在一些实施例中,所述MAC PDU包括第三MAC子PDU,所述第三MAC子PDU包括BI,所述第三MAC子PDU为所述MAC PDU的第一个MAC子PDU。
即如果包括BI子包头,则该BI子包头为该MAC PDU的第一个子包头。
可选地,在一些实施例中,所述MAC PDU包括第四MAC子PDU,所述第四MAC子PDU包括填充比特,所述第四MAC子PDU为所述MAC PDU的最后一个MAC子PDU。
即包括填充比特的MAC subPDU为该MAC PDU的最后一个子包头。
可选地,在一些实施例中,所述上行定时TAC包含在所述MAC子PDU的MAC CE中;
所述C-RNT或TC-RNTI包含在所述MAC子PDU的MAC CE中;
所述上行定时和所述C-RNT或TC-RNTI包含在同一个MAC CE中。
上文结合图2至图6,从终端设备的角度详细描述了根据本申请实施例的无线通信的方法,下文结合图7,从网络设备的角度详细描述根据本申请另一实施例的无线通信的方法。应理解,网络设备侧的描述与终端设备侧的描述相互对应,相似的描述可以参见上文,为避免重复,此处不再赘述。
图7是根据本申请另一实施例的无线通信的方法300的示意性流程图,该方法300可以由图1所示的通信系统中的网络设备执行,如图7所示,该方法300包括如下内容:
S310,网络设备接收终端设备发送的第一消息,所述第一消息包括用于随机接入的前导码标识ID和上行消息,所述上行信息包括第一标识;
S320,所述网络设备根据所述第一消息的解码情况,确定向所述终端设备回复的第二消息。
应理解,在本申请实施例中,该第一消息的解码情况可以包括:
情况1:前导码标识ID(preamble index)解调成功,上行消息解调失败;
情况2:preamble index解调成功,上行消息解调成功;
情况3:preamble index解调失败,上行消息解调失败。
对于情况1,由于终端设备可能采用相同的PRACH资源发送preamble index,并且有可能不同的终端设备选择相同的RPACH资源和相同的preamble index,因此,网络设备不能根据preamble index区分是哪个UE。
此情况下,该网络设备可以回复RAR,即MSG2,这样,对于两步RACH终端设备,可以回退到四步RACH,即向网络设备发送MSG3,即该上行消息,对于四步RACH UE,则执行正常的随机接入流程,即也向网络设备发送MSG3。
或者,所述网络设备向所述终端设备发送第一指示信息,用于指示所述终端设备重传所述第一消息,可选地,所述网络设备还可以发送第二指示信息,用于指示所述终端设备停止监听PDCCH,以便于尽快重传该第一消息。
具体地,若该网络设备能够区分终端设备是发起四步随机接入还是两步随机接入过程的终端设备,例如可以通过不同的PRACH资源。对于两步随机接入过程的终端设备,该网络设备可以向该终端设备发送第一指示信息,用于指示该终端设备重传该第一消息,还可以向该终端设备发送第二指示信息,用于指示该终端设备停止监听PDCCH。或者,对于四步随机接入过程的终端设备,该终端设备只需执行正常的随机接入过程即可。
对于情况2,所述网络设备可以向所述终端设备发送第二消息,所述第二消息包括第二标识,所述第二标识为终端设备竞争解决ID。
由上文描述可知,该第一标识可以用于指示终端设备所处的连接状态,由此,网络设备接收到该第一消息之后,可以根据第一消息中的该第一标识确定终端设备所处的连接状态,进一步可以选择该第二消息中携带的内容,例如,对于竞争冲突解决的终端设备,网络设备可以在响应消息中携带一个匹配的第二标识指示终端设备其竞争冲突解决。
对于情况3,该网络设备可以指示终端设备重传该第一消息,同时还可以指示该终端设备停止监 听PDCCH。
可选地,在一些实施例中,所述第二消息为媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括一个或多个MAC子PDU,所述MAC子PDU为以下格式中的一种:
所述MAC子PDU只包括MAC子包头;
所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
所述MAC子PDU包括MAC子包头和MAC控制元素CE;
所述MAC子PDU包括MAC子包头和填充比特。
可选地,在一些实施例中,所述上行消息为公共控制信道CCCH服务数据单元SDU,包括M个比特,所述第二标识包含在所述MAC CE中,包括N个比特,其中,M大于或等于N,所述MAC CE的N个比特用于与所述CCCH SDU的N个比特匹配确定竞争冲突是否解决;
其中,若所述M大于N,所述CCCH SDU的N个比特为所述CCCH SDU的前N个比特。
可选地,在一些实施例中,所述N为48。
可选地,在一些实施例中,若所述第二消息中的MAC子PDU为以下格式中的一种,确定所述第二消息中不包括所述第二标识:
所述MAC子PDU只包括MAC子包头;
所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
所述MAC子PDU包括MAC子包头和填充比特。
可选地,在一些实施例中,所述第二消息还包括以下中的至少一个信息:
回退指示BI,用于指示是否回退至四步随机接入;
上行定时;
小区无线网络临时标识符C-RNT或临时小区无线网络临时标识符TC-RNTI;
至少一个随机接入前导码标识RAPID。
可选地,在一些实施例中,所述MAC子PDU包括BI子包头,用于承载所述BI;或
所述MAC子PDU包括RAPID子包头,所述RAPID子包头用于承载RAPID。
可选地,在一些实施例中,所述RAPID子包头还包括SDU数据长度和逻辑信道标识LCID。
可选地,在一些实施例中,所述RAR消息包括第一MAC子PDU和第二MAC子PDU,其中,所述第一MAC子PDU包括第二标识,所述第二MAC子PDU包括所述RAPID,
在所述MAC PDU中,所述第一MAC子PDU位于所述第二MAC子PDU前。
可选地,在一些实施例中,所述MAC PDU包括第三MAC子PDU,所述第三MAC子PDU包括BI,
所述第三MAC子PDU为所述MAC PDU的第一个MAC子PDU。
可选地,在一些实施例中,所述RAR包括第四MAC子PDU,所述第四MAC子PDU包括填充比特,
所述第四MAC子PDU为所述MAC PDU的最后一个MAC子PDU。
可选地,在一些实施例中,所述上行定时包含在所述MAC子PDU的MAC CE中;
所述C-RNT或TC-RNTI包含在所述MAC子PDU的MAC CE中;
所述上行定时和所述C-RNT或TC-RNTI包含在同一个MAC CE中。
可选地,在一些实施例中,所述第一标识为以下中的至少一种:
C-RNTI;
固定比特数的随机数;
NG-5G-S-临时移动用户标识TMSI;
I-RNTI,用于标识处于非激活态的终端设备的上下文信息;
短I-RNTI。
上文结合图2至图7,详细描述了本申请的方法实施例,下文结合图8至图12,详细描述本申请的装置实施例,应理解,装置实施例与方法实施例相互对应,类似的描述可以参照方法实施例。
图8示出了根据本申请实施例的终端设备400的示意性框图。如图8所示,该终端设备400包括:
通信模块410,用于向网络设备发送第一消息,所述第一消息包括用于随机接入的前导码标识ID和上行消息,所述上行消息包括第一标识;
确定模块420,用于根据所述第一标识,确定监听物理下行控制信道PDCCH所使用的目标无线网络临时标识符RNTI;
所述通信模块410还用于监听所述目标RNTI加扰的PDCCH;
所述确定模块420还用于根据所述PDCCH调度的第二消息以及所述上行消息,确定竞争冲突是 否解决。
可选地,在一些实施例中,所述确定模块420具体用于:
若所述第一标识为第一小区无线网络临时标识符C-RNTI,将所述第一C-RNTI确定为所述目标RNTI;或
若所述第一标识为除C-RNTI以外的其他信息,将随机接入RA-RNTI确定为所述目标RNTI。
可选地,在一些实施例中,所述终端设备400还包括:
处理模块,用于在向所述网络设备发送所述第一消息之后,启动第一定时器;
所述通信模块410还用于:
在所述第一定时器的时长范围内,监听所述目标RNTI加扰的PDCCH。
可选地,在一些实施例中,所述处理模块具体用于:
在发送完所述前导码ID之后,启动所述第一定时器;
在发送完所述上行消息之后,启动所述第一定时器。
可选地,在一些实施例中,所述确定模块420具体用于:
若所述第二消息中不包括第二标识,确定竞争冲突未解决;或
若所述第二消息包括第二标识,且所述第二标识与所述上行消息不匹配,确定竞争冲突未解决;或
若所述第二消息中包括第二标识,且所述第二标识与所述上行消息匹配,确定竞争冲突解决;
其中,所述第二标识为终端设备竞争解决ID。
可选地,在一些实施例中,所述第二消息为媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括一个或多个MAC子PDU,所述MAC子PDU为以下格式中的一种:
所述MAC子PDU只包括MAC子包头;
所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
所述MAC子PDU包括MAC子包头和MAC控制元素CE;
所述MAC子PDU包括MAC子包头和填充比特。
可选地,在一些实施例中,所述上行消息为公共控制信道CCCH服务数据单元SDU,包括M个比特,所述第二标识包含在所述MAC子PDU的MAC CE中,包括N个比特,其中,M大于或等于N,
所述第二标识与所述上行消息匹配包括:
所述CCCH SDU的N个比特和所述MAC CE的N个比特相同;
所述第二标识与所述上行消息不匹配包括:
所述CCCH SDU的N个比特和所述MAC CE的N个比特至少有一个比特不同;
其中,若所述M大于N,所述CCCH SDU的N个比特为所述CCCH SDU的前N个比特。
可选地,在一些实施例中,所述N为48。
可选地,在一些实施例中,所述确定模块还用于:
若所述第二消息中的MAC子PDU为以下格式中的一种,确定所述第二消息中不包括所述第二标识:
所述MAC子PDU只包括MAC子包头;
所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
所述MAC子PDU包括MAC子包头和填充比特。
可选地,在一些实施例中,所述第二消息还包括以下中的至少一个信息:
回退指示BI,用于指示是否回退至四步随机接入;
上行定时;
小区无线网络临时标识符C-RNT或临时小区无线网络临时标识符TC-RNTI;
至少一个随机接入前导码标识RAPID。
可选地,在一些实施例中,所述MAC子PDU包括BI子包头,用于承载所述BI;或
所述MAC子PDU包括RAPID子包头,所述RAPID子包头用于承载RAPID。
可选地,在一些实施例中,所述RAPID子包头还包括SDU数据长度和逻辑信道标识LCID。
可选地,在一些实施例中,所述RAR消息包括第一MAC子PDU和第二MAC子PDU,其中,所述第一MAC子PDU包括第二标识,所述第二MAC子PDU包括所述RAPID,
在所述MAC PDU中,所述第一MAC子PDU位于所述第二MAC子PDU前。
可选地,在一些实施例中,所述MAC PDU包括第三MAC子PDU,所述第三MAC子PDU包括BI,
所述第三MAC子PDU为所述MAC PDU的第一个MAC子PDU。
可选地,在一些实施例中,所述RAR包括第四MAC子PDU,所述第四MAC子PDU包括填充比特,
所述第四MAC子PDU为所述MAC PDU的最后一个MAC子PDU。
可选地,在一些实施例中,所述上行定时包含在所述MAC子PDU的MAC CE中;
所述C-RNT或TC-RNTI包含在所述MAC子PDU的MAC CE中;
所述上行定时和所述C-RNT或TC-RNTI包含在同一个MAC CE中。
可选地,在一些实施例中,所述确定模块420还用于:
根据所述至少一个RAPID与所述第一消息中的所述前导码ID,确定是否发送第三消息,所述第三消息用于发送所述上行消息。
可选地,在一些实施例中,所述确定模块420具体用于:
若所述至少一个RAPID中存在一个RARID与所述第一消息中的所述前导码ID一致,确定发送第三消息;或
若所述至少一个RAPID与所述第一消息中的所述前导码ID都不一致,确定不发送第三消息。
可选地,在一些实施例中,所述第二消息中包括所述网络设备为所述终端设备分配的上行资源,所述通信模块410还用于:
在所述上行资源上发送所述上行消息。
可选地,在一些实施例中,所述第一标识为以下中的至少一种:
C-RNTI;
固定比特数的随机数;
NG-5G-S-临时移动用户标识TMSI;
I-RNTI,用于标识处于非激活态的终端设备的上下文信息;
短I-RNTI。
可选地,在一些实施例中,所述确定模块420还用于:
根据发送所述第一消息所使用的随机接入资源,确定所述RA-RNTI。
可选地,在一些实施例中,所述确定模块420具体用于:
根据发送所述第一消息所使用的随机接入资源,以及第一对应关系,确定所述RA-RNTI,其中,所述第一对应关系为随机接入资源和RA-RNTI的对应关系。
应理解,根据本申请实施例的终端设备400可对应于本申请方法实施例中的终端设备,并且终端设备400中的各个单元的上述和其它操作和/或功能分别为了实现图2所示方法200中终端设备的相应流程,为了简洁,在此不再赘述。
图9是根据本申请实施例的网络设备的示意性框图。图9的网络设备500包括:
通信模块510,用于接收终端设备发送的第一消息,所述第一消息包括用于随机接入的前导码标识ID和上行消息,所述上行信息包括第一标识;
确定模块520,用于根据所述第一消息的解码情况,确定向所述终端设备回复的第二消息。
可选地,在一些实施例中,所述通信模块510还用于:
若所述前导码ID解码成功,且所述上行信息解码失败,向所述终端设备发送随机接入响应RAR;或
若所述前导码ID解码成功,且所述上行信息解码失败,向所述终端设备发送第一指示信息,用于指示所述终端设备重传所述第一消息。
可选地,在一些实施例中,所述通信模块510还用于:
若所述前导码ID解码成功,且所述上行信息解码失败,发送第二指示信息,用于指示所述终端设备停止监听物理下行控制信道PDCCH。
可选地,在一些实施例中,所述通信模块510还用于:
若所述前导码ID解码成功,且所述上行信息解码成功,向所述终端设备发送第二消息,所述第二消息包括第二标识,所述第二标识为终端设备竞争解决ID。
可选地,在一些实施例中,所述第二消息为媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括一个或多个MAC子PDU,所述MAC子PDU为以下格式中的一种:
所述MAC子PDU只包括MAC子包头;
所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
所述MAC子PDU包括MAC子包头和MAC控制元素CE;
所述MAC子PDU包括MAC子包头和填充比特。
可选地,在一些实施例中,所述上行消息为公共控制信道CCCH服务数据单元SDU,包括M个比特,所述第二标识包含在所述MAC CE中,包括N个比特,其中,M大于或等于N,所述MAC CE的N个比特用于与所述CCCH SDU的N个比特匹配确定竞争冲突是否解决;
其中,若所述M大于N,所述CCCH SDU的N个比特为所述CCCH SDU的前N个比特。
可选地,在一些实施例中,所述N为48。
可选地,在一些实施例中,若所述第二消息中的MAC子PDU为以下格式中的一种,所述第二消息中不包括所述第二标识:
所述MAC子PDU只包括MAC子包头;
所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
所述MAC子PDU包括MAC子包头和填充比特。
可选地,在一些实施例中,所述第二消息还包括以下中的至少一个信息:
回退指示BI,用于指示是否回退至四步随机接入;
上行定时;
小区无线网络临时标识符C-RNT或临时小区无线网络临时标识符TC-RNTI;
至少一个随机接入前导码标识RAPID。
可选地,在一些实施例中,所述MAC子PDU包括BI子包头,用于承载所述BI;或
所述MAC子PDU包括RAPID子包头,所述RAPID子包头用于承载RAPID。
可选地,在一些实施例中,所述RAPID子包头还包括SDU数据长度和逻辑信道标识LCID。
可选地,在一些实施例中,所述RAR消息包括第一MAC子PDU和第二MAC子PDU,其中,所述第一MAC子PDU包括第二标识,所述第二MAC子PDU包括所述RAPID,
在所述MAC PDU中,所述第一MAC子PDU位于所述第二MAC子PDU前。
可选地,在一些实施例中,所述MAC PDU包括第三MAC子PDU,所述第三MAC子PDU包括BI,
所述第三MAC子PDU为所述MAC PDU的第一个MAC子PDU。
可选地,在一些实施例中,所述RAR包括第四MAC子PDU,所述第四MAC子PDU包括填充比特,
所述第四MAC子PDU为所述MAC PDU的最后一个MAC子PDU。
可选地,在一些实施例中,所述上行定时包含在所述MAC子PDU的MAC CE中;
所述C-RNT或TC-RNTI包含在所述MAC子PDU的MAC CE中;
所述上行定时和所述C-RNT或TC-RNTI包含在同一个MAC CE中。
可选地,在一些实施例中,所述第一标识为以下中的至少一种:
C-RNTI;
固定比特数的随机数;
NG-5G-S-临时移动用户标识TMSI;
I-RNTI,用于标识处于非激活态的终端设备的上下文信息;
短I-RNTI。
具体地,该网络设备500可以对应(例如,可以配置于或本身即为)上述方法300中描述的网络设备,并且,该网络设备500中的各模块或单元分别用于执行上述方法300中网络设备所执行的各动作或处理过程,这里,为了避免赘述,省略其详细说明。
图10是本申请实施例提供的一种通信设备600示意性结构图。图10所示的通信设备600包括处理器610,处理器610可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
可选地,如图10所示,通信设备600还可以包括存储器620。其中,处理器610可以从存储器620中调用并运行计算机程序,以实现本申请实施例中的方法。
其中,存储器620可以是独立于处理器610的一个单独的器件,也可以集成在处理器610中。
可选地,如图10所示,通信设备600还可以包括收发器630,处理器610可以控制该收发器630与其他设备进行通信,具体地,可以向其他设备发送信息或数据,或接收其他设备发送的信息或数据。
其中,收发器630可以包括发射机和接收机。收发器630还可以进一步包括天线,天线的数量可以为一个或多个。
可选地,该通信设备600具体可为本申请实施例的网络设备,并且该通信设备600可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该通信设备600具体可为本申请实施例的移动终端/终端设备,并且该通信设备600可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程,为了简洁,在此不再赘述。
图11是本申请实施例的芯片的示意性结构图。图11所示的芯片700包括处理器710,处理器710可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
可选地,如图11所示,芯片700还可以包括存储器720。其中,处理器710可以从存储器720中调用并运行计算机程序,以实现本申请实施例中的方法。
其中,存储器720可以是独立于处理器710的一个单独的器件,也可以集成在处理器710中。
可选地,该芯片700还可以包括输入接口730。其中,处理器710可以控制该输入接口730与其他设备或芯片进行通信,具体地,可以获取其他设备或芯片发送的信息或数据。
可选地,该芯片700还可以包括输出接口740。其中,处理器710可以控制该输出接口740与其他设备或芯片进行通信,具体地,可以向其他设备或芯片输出信息或数据。
可选地,该芯片可应用于本申请实施例中的网络设备,并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该芯片可应用于本申请实施例中的移动终端/终端设备,并且该芯片可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程,为了简洁,在此不再赘述。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
图12是本申请实施例提供的一种通信系统800的示意性框图。如图12所示,该通信系统800包括终端设备810和网络设备820。
其中,该终端设备810可以用于实现上述方法中由终端设备实现的相应的功能,以及该网络设备820可以用于实现上述方法中由网络设备实现的相应的功能为了简洁,在此不再赘述。
应理解,本申请实施例的处理器可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现成可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。
可以理解,本申请实施例中的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)。应注意,本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解,上述存储器为示例性但不是限制性说明,例如,本申请实施例中的存储器还可以是静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synch link DRAM,SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)等等。也就是说,本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质,用于存储计算机程序。
可选的,该计算机可读存储介质可应用于本申请实施例中的网络设备,并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该计算机可读存储介质可应用于本申请实施例中的移动终端/终端设备,并且该计算机程序使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程,为了简洁, 在此不再赘述。
本申请实施例还提供了一种计算机程序产品,包括计算机程序指令。
可选的,该计算机程序产品可应用于本申请实施例中的网络设备,并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该计算机程序产品可应用于本申请实施例中的移动终端/终端设备,并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程,为了简洁,在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选的,该计算机程序可应用于本申请实施例中的网络设备,当该计算机程序在计算机上运行时,使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程,为了简洁,在此不再赘述。
可选地,该计算机程序可应用于本申请实施例中的移动终端/终端设备,当该计算机程序在计算机上运行时,使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程,为了简洁,在此不再赘述。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
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。
所述功能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(Read-Only Memory,)ROM、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应所述以权利要求的保护范围为准。

Claims (86)

  1. 一种无线通信的方法,其特征在于,包括:
    终端设备向网络设备发送第一消息,所述第一消息包括用于随机接入的前导码标识ID和上行消息,所述上行消息包括第一标识;
    所述终端设备根据所述第一标识,确定监听物理下行控制信道PDCCH所使用的目标无线网络临时标识符RNTI;
    所述终端设备监听所述目标RNTI加扰的PDCCH;
    根据所述PDCCH调度的第二消息以及所述上行消息,确定竞争冲突是否解决。
  2. 根据权利要求1所述的方法,其特征在于,所述终端设备根据所述第一标识,确定监听物理下行控制信道PDCCH的所使用的目标无线网络临时标识符RNTI,包括:
    若所述第一标识为第一小区无线网络临时标识符C-RNTI,所述终端设备将所述第一C-RNTI确定为所述目标RNTI;或
    若所述第一标识为除C-RNTI以外的其他信息,所述终端设备将随机接入RA-RNTI确定为所述目标RNTI。
  3. 根据权利要求2所述的方法,其特征在于,所述方法还包括:
    在所述终端设备向所述网络设备发送所述第一消息之后,所述终端设备启动第一定时器;
    所述终端设备监听所述目标RNTI加扰的PDCCH,包括:
    所述终端设备在所述第一定时器的时长范围内,监听所述目标RNTI加扰的PDCCH。
  4. 根据权利要求3所述的方法,其特征在于,所述终端设备向所述网络设备发送所述第一消息之后包括:
    在所述终端设备发送完所述前导码ID之后;
    在所述终端设备发送完所述上行消息之后。
  5. 根据权利要求1至4中任一项所述的方法,其特征在于,所述根据所述PDCCH调度的第二消息以及所述上行消息,确定竞争冲突是否解决,包括:
    若所述第二消息中不包括第二标识,确定竞争冲突未解决;或
    若所述第二消息包括第二标识,且所述第二标识与所述上行消息不匹配,确定竞争冲突未解决;或
    若所述第二消息中包括第二标识,且所述第二标识与所述上行消息匹配,确定竞争冲突解决;
    其中,所述第二标识为终端设备竞争解决ID。
  6. 根据权利要求5所述的方法,其特征在于,所述第二消息为媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括一个或多个MAC子PDU,所述MAC子PDU为以下格式中的一种:
    所述MAC子PDU只包括MAC子包头;
    所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
    所述MAC子PDU包括MAC子包头和MAC控制元素CE;
    所述MAC子PDU包括MAC子包头和填充比特。
  7. 根据权利要求6所述的方法,其特征在于,所述上行消息为公共控制信道CCCH服务数据单元SDU,包括M个比特,所述第二标识包含在所述MAC子PDU的MAC CE中,包括N个比特,其中,M大于或等于N,
    所述第二标识与所述上行消息匹配包括:
    所述CCCH SDU的N个比特和所述MAC CE的N个比特相同;
    所述第二标识与所述上行消息不匹配包括:
    所述CCCH SDU的N个比特和所述MAC CE的N个比特至少有一个比特不同;
    其中,若所述M大于N,所述CCCH SDU的N个比特为所述CCCH SDU的前N个比特。
  8. 根据权利要求7所述的方法,其特征在于,所述N为48。
  9. 根据权利要求6至8中任一项所述的方法,其特征在于,所述方法还包括:
    若所述第二消息中的MAC子PDU为以下格式中的一种,确定所述第二消息中不包括所述第二标识:
    所述MAC子PDU只包括MAC子包头;
    所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
    所述MAC子PDU包括MAC子包头和填充比特。
  10. 根据权利要求6至9中任一项所述的方法,其特征在于,所述第二消息还包括以下中的至少一个信息:
    回退指示BI,用于指示是否回退至四步随机接入;
    上行定时;
    小区无线网络临时标识符C-RNT或临时小区无线网络临时标识符TC-RNTI;
    至少一个随机接入前导码标识RAPID。
  11. 根据权利要求10所述的方法,其特征在于,所述MAC子PDU包括BI子包头,用于承载所述BI;或
    所述MAC子PDU包括RAPID子包头,所述RAPID子包头用于承载RAPID。
  12. 根据权利要求11所述的方法,其特征在于,所述RAPID子包头还包括SDU数据长度和逻辑信道标识LCID。
  13. 根据权利要求10至12中任一项所述的方法,其特征在于,所述MAC PDU包括第一MAC子PDU和第二MAC子PDU,其中,所述第一MAC子PDU包括第二标识,所述第二MAC子PDU包括所述RAPID,
    在所述MAC PDU中,所述第一MAC子PDU位于所述第二MAC子PDU前。
  14. 根据权利要求10至13中任一项所述的方法,其特征在于,所述MAC PDU包括第三MAC子PDU,所述第三MAC子PDU包括BI,
    所述第三MAC子PDU为所述MAC PDU的第一个MAC子PDU。
  15. 根据权利要求10至14中任一项所述的方法,其特征在于,所述MAC PDU包括第四MAC子PDU,所述第四MAC子PDU包括填充比特,
    所述第四MAC子PDU为所述MAC PDU的最后一个MAC子PDU。
  16. 根据权利要求10至15中任一项所述的方法,其特征在于,
    所述上行定时包含在所述MAC子PDU的MAC CE中;
    所述C-RNT或TC-RNTI包含在所述MAC子PDU的MAC CE中;
    所述上行定时和所述C-RNT或TC-RNTI包含在同一个MAC CE中。
  17. 根据权利要求10至16中任一项所述的方法,其特征在于,所述方法还包括:
    根据所述至少一个RAPID与所述第一消息中的所述前导码ID,确定是否发送第三消息,所述第三消息用于发送所述上行消息。
  18. 根据权利要求17所述的方法,其特征在于,所述根据所述至少一个RAPID与所述第一消息中的所述前导码ID,确定是否发送第三消息,包括:
    若所述至少一个RAPID中存在一个RARID与所述第一消息中的所述前导码ID一致,确定发送第三消息;或
    若所述至少一个RAPID与所述第一消息中的所述前导码ID都不一致,确定不发送第三消息。
  19. 根据权利要求17或18所述的方法,其特征在于,所述第二消息中包括所述网络设备为所述终端设备分配的上行资源,所述方法还包括:
    所述终端设备在所述上行资源上发送所述上行消息。
  20. 根据权利要求1至19中任一项所述的方法,其特征在于,所述第一标识为以下中的至少一种:
    C-RNTI;
    固定比特数的随机数;
    NG-5G-S-临时移动用户标识TMSI;
    I-RNTI,用于标识处于非激活态的终端设备的上下文信息;
    短I-RNTI。
  21. 根据权利要求1至20中任一项所述的方法,其特征在于,所述方法还包括:
    所述终端设备根据发送所述第一消息所使用的随机接入资源,确定所述RA-RNTI。
  22. 根据权利要求21所述的方法,其特征在于,所述终端设备根据发送所述第一消息所使用的随机接入资源,确定所述RA-RNTI,包括:
    所述终端设备根据发送所述第一消息所使用的随机接入资源,以及第一对应关系,确定所述RA-RNTI,其中,所述第一对应关系为随机接入资源和RA-RNTI的对应关系。
  23. 一种无线通信的方法,其特征在于,包括:
    网络设备接收终端设备发送的第一消息,所述第一消息包括用于随机接入的前导码标识ID和上行消息,所述上行信息包括第一标识;
    所述网络设备根据所述第一消息的解码情况,确定向所述终端设备回复的第二消息。
  24. 根据权利要求23所述的方法,其特征在于,所述网络设备根据所述第一消息的解码情况, 确定向所述终端设备回复的响应消息,包括:
    若所述前导码ID解码成功,且所述上行信息解码失败,所述网络设备向所述终端设备发送随机接入响应RAR;或
    若所述前导码ID解码成功,且所述上行信息解码失败,所述网络设备向所述终端设备发送第一指示信息,用于指示所述终端设备重传所述第一消息。
  25. 根据权利要求24所述的方法,其特征在于,所述方法还包括:
    若所述前导码ID解码成功,且所述上行信息解码失败,所述网络设备发送第二指示信息,用于指示所述终端设备停止监听物理下行控制信道PDCCH。
  26. 根据权利要求23所述的方法,其特征在于,所述网络设备根据所述第一消息的解码情况,确定向所述终端设备回复的响应消息,包括:
    若所述前导码ID解码成功,且所述上行信息解码成功,所述网络设备向所述终端设备发送第二消息,所述第二消息包括第二标识,所述第二标识为终端设备竞争解决ID。
  27. 根据权利要求26所述的方法,其特征在于,所述第二消息为媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括一个或多个MAC子PDU,所述MAC子PDU为以下格式中的一种:
    所述MAC子PDU只包括MAC子包头;
    所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
    所述MAC子PDU包括MAC子包头和MAC控制元素CE;
    所述MAC子PDU包括MAC子包头和填充比特。
  28. 根据权利要求27所述的方法,其特征在于,所述上行消息为公共控制信道CCCH服务数据单元SDU,包括M个比特,所述第二标识包含在所述MAC CE中,包括N个比特,其中,M大于或等于N,所述MAC CE的N个比特用于与所述CCCH SDU的N个比特匹配确定竞争冲突是否解决;
    其中,若所述M大于N,所述CCCH SDU的N个比特为所述CCCH SDU的前N个比特。
  29. 根据权利要求28所述的方法,其特征在于,所述N为48。
  30. 根据权利要求27至29中任一项所述的方法,其特征在于,
    若所述第二消息中的MAC子PDU为以下格式中的一种,所述第二消息中不包括所述第二标识:
    所述MAC子PDU只包括MAC子包头;
    所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
    所述MAC子PDU包括MAC子包头和填充比特。
  31. 根据权利要求27至30中任一项所述的方法,其特征在于,所述第二消息还包括以下中的至少一个信息:
    回退指示BI,用于指示是否回退至四步随机接入;
    上行定时;
    小区无线网络临时标识符C-RNT或临时小区无线网络临时标识符TC-RNTI;
    至少一个随机接入前导码标识RAPID。
  32. 根据权利要求31所述的方法,其特征在于,所述MAC子PDU包括BI子包头,用于承载所述BI;或
    所述MAC子PDU包括RAPID子包头,所述RAPID子包头用于承载RAPID。
  33. 根据权利要求32所述的方法,其特征在于,所述RAPID子包头还包括SDU数据长度和逻辑信道标识LCID。
  34. 根据权利要求31至33中任一项所述的方法,其特征在于,所述RAR消息包括第一MAC子PDU和第二MAC子PDU,其中,所述第一MAC子PDU包括第二标识,所述第二MAC子PDU包括所述RAPID,
    在所述MAC PDU中,所述第一MAC子PDU位于所述第二MAC子PDU前。
  35. 根据权利要求31至34中任一项所述的方法,其特征在于,所述MAC PDU包括第三MAC子PDU,所述第三MAC子PDU包括BI,
    所述第三MAC子PDU为所述MAC PDU的第一个MAC子PDU。
  36. 根据权利要求31至35中任一项所述的方法,其特征在于,所述RAR包括第四MAC子PDU,所述第四MAC子PDU包括填充比特,
    所述第四MAC子PDU为所述MAC PDU的最后一个MAC子PDU。
  37. 根据权利要求31至36中任一项所述的方法,其特征在于,
    所述上行定时包含在所述MAC子PDU的MAC CE中;
    所述C-RNT或TC-RNTI包含在所述MAC子PDU的MAC CE中;
    所述上行定时和所述C-RNT或TC-RNTI包含在同一个MAC CE中。
  38. 根据权利要求23至37中任一项所述的方法,其特征在于,所述第一标识为以下中的至少一种:
    C-RNTI;
    固定比特数的随机数;
    NG-5G-S-临时移动用户标识TMSI;
    I-RNTI,用于标识处于非激活态的终端设备的上下文信息;
    短I-RNTI。
  39. 一种终端设备,其特征在于,包括:
    通信模块,用于向网络设备发送第一消息,所述第一消息包括用于随机接入的前导码标识ID和上行消息,所述上行消息包括第一标识;
    确定模块,用于根据所述第一标识,确定监听物理下行控制信道PDCCH所使用的目标无线网络临时标识符RNTI;
    所述通信模块还用于监听所述目标RNTI加扰的PDCCH;
    所述确定模块还用于根据所述PDCCH调度的第二消息以及所述上行消息,确定竞争冲突是否解决。
  40. 根据权利要求39所述的终端设备,其特征在于,所述确定模块具体用于:
    若所述第一标识为第一小区无线网络临时标识符C-RNTI,将所述第一C-RNTI确定为所述目标RNTI;或
    若所述第一标识为除C-RNTI以外的其他信息,将随机接入RA-RNTI确定为所述目标RNTI。
  41. 根据权利要求40所述的终端设备,其特征在于,所述终端设备还包括:
    处理模块,用于在向所述网络设备发送所述第一消息之后,启动第一定时器;
    所述通信模块还用于:
    在所述第一定时器的时长范围内,监听所述目标RNTI加扰的PDCCH。
  42. 根据权利要求41所述的终端设备,其特征在于,所述处理模块具体用于:
    在发送完所述前导码ID之后,启动所述第一定时器;
    在发送完所述上行消息之后,启动所述第一定时器。
  43. 根据权利要求39至42中任一项所述的终端设备,其特征在于,所述确定模块具体用于:
    若所述第二消息中不包括第二标识,确定竞争冲突未解决;或
    若所述第二消息包括第二标识,且所述第二标识与所述上行消息不匹配,确定竞争冲突未解决;或
    若所述第二消息中包括第二标识,且所述第二标识与所述上行消息匹配,确定竞争冲突解决;
    其中,所述第二标识为终端设备竞争解决ID。
  44. 根据权利要求43所述的终端设备,其特征在于,所述第二消息为媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括一个或多个MAC子PDU,所述MAC子PDU为以下格式中的一种:
    所述MAC子PDU只包括MAC子包头;
    所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
    所述MAC子PDU包括MAC子包头和MAC控制元素CE;
    所述MAC子PDU包括MAC子包头和填充比特。
  45. 根据权利要求44所述的终端设备,其特征在于,所述上行消息为公共控制信道CCCH服务数据单元SDU,包括M个比特,所述第二标识包含在所述MAC子PDU的MAC CE中,包括N个比特,其中,M大于或等于N,
    所述第二标识与所述上行消息匹配包括:
    所述CCCH SDU的N个比特和所述MAC CE的N个比特相同;
    所述第二标识与所述上行消息不匹配包括:
    所述CCCH SDU的N个比特和所述MAC CE的N个比特至少有一个比特不同;
    其中,若所述M大于N,所述CCCH SDU的N个比特为所述CCCH SDU的前N个比特。
  46. 根据权利要求45所述的终端设备,其特征在于,所述N为48。
  47. 根据权利要求44至46中任一项所述的终端设备,其特征在于,所述确定模块还用于:
    若所述第二消息中的MAC子PDU为以下格式中的一种,确定所述第二消息中不包括所述第二标识:
    所述MAC子PDU只包括MAC子包头;
    所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
    所述MAC子PDU包括MAC子包头和填充比特。
  48. 根据权利要求44至47中任一项所述的终端设备,其特征在于,所述第二消息还包括以下中的至少一个信息:
    回退指示BI,用于指示是否回退至四步随机接入;
    上行定时;
    小区无线网络临时标识符C-RNT或临时小区无线网络临时标识符TC-RNTI;
    至少一个随机接入前导码标识RAPID。
  49. 根据权利要求48所述的终端设备,其特征在于,所述MAC子PDU包括BI子包头,用于承载所述BI;或
    所述MAC子PDU包括RAPID子包头,所述RAPID子包头用于承载RAPID。
  50. 根据权利要求49所述的终端设备,其特征在于,所述RAPID子包头还包括SDU数据长度和逻辑信道标识LCID。
  51. 根据权利要求48至50中任一项所述的终端设备,其特征在于,所述RAR消息包括第一MAC子PDU和第二MAC子PDU,其中,所述第一MAC子PDU包括第二标识,所述第二MAC子PDU包括所述RAPID,
    在所述MAC PDU中,所述第一MAC子PDU位于所述第二MAC子PDU前。
  52. 根据权利要求48至51中任一项所述的终端设备,其特征在于,所述MAC PDU包括第三MAC子PDU,所述第三MAC子PDU包括BI,
    所述第三MAC子PDU为所述MAC PDU的第一个MAC子PDU。
  53. 根据权利要求48至52中任一项所述的终端设备,其特征在于,所述RAR包括第四MAC子PDU,所述第四MAC子PDU包括填充比特,
    所述第四MAC子PDU为所述MAC PDU的最后一个MAC子PDU。
  54. 根据权利要求48至53中任一项所述的终端设备,其特征在于,
    所述上行定时包含在所述MAC子PDU的MAC CE中;
    所述C-RNT或TC-RNTI包含在所述MAC子PDU的MAC CE中;
    所述上行定时和所述C-RNT或TC-RNTI包含在同一个MAC CE中。
  55. 根据权利要求48至54中任一项所述的终端设备,其特征在于,所述确定模块还用于:
    根据所述至少一个RAPID与所述第一消息中的所述前导码ID,确定是否发送第三消息,所述第三消息用于发送所述上行消息。
  56. 根据权利要求55所述的终端设备,其特征在于,所述确定模块具体用于:
    若所述至少一个RAPID中存在一个RARID与所述第一消息中的所述前导码ID一致,确定发送第三消息;或
    若所述至少一个RAPID与所述第一消息中的所述前导码ID都不一致,确定不发送第三消息。
  57. 根据权利要求55或56所述的终端设备,其特征在于,所述第二消息中包括所述网络设备为所述终端设备分配的上行资源,所述通信模块还用于:
    在所述上行资源上发送所述上行消息。
  58. 根据权利要求39至57中任一项所述的终端设备,其特征在于,所述第一标识为以下中的至少一种:
    C-RNTI;
    固定比特数的随机数;
    NG-5G-S-临时移动用户标识TMSI;
    I-RNTI,用于标识处于非激活态的终端设备的上下文信息;
    短I-RNTI。
  59. 根据权利要求39至58中任一项所述的终端设备,其特征在于,所述确定模块还用于:
    根据发送所述第一消息所使用的随机接入资源,确定所述RA-RNTI。
  60. 根据权利要求59所述的终端设备,其特征在于,所述确定模块具体用于:
    根据发送所述第一消息所使用的随机接入资源,以及第一对应关系,确定所述RA-RNTI,其中,所述第一对应关系为随机接入资源和RA-RNTI的对应关系。
  61. 一种网络设备,其特征在于,包括:
    通信模块,用于接收终端设备发送的第一消息,所述第一消息包括用于随机接入的前导码标识ID 和上行消息,所述上行信息包括第一标识;
    确定模块,用于根据所述第一消息的解码情况,确定向所述终端设备回复的第二消息。
  62. 根据权利要求61所述的网络设备,其特征在于,所述通信模块还用于:
    若所述前导码ID解码成功,且所述上行信息解码失败,向所述终端设备发送随机接入响应RAR;或
    若所述前导码ID解码成功,且所述上行信息解码失败,向所述终端设备发送第一指示信息,用于指示所述终端设备重传所述第一消息。
  63. 根据权利要求62所述的网络设备,其特征在于,所述通信模块还用于:
    若所述前导码ID解码成功,且所述上行信息解码失败,发送第二指示信息,用于指示所述终端设备停止监听物理下行控制信道PDCCH。
  64. 根据权利要求61所述的网络设备,其特征在于,所述通信模块还用于:
    若所述前导码ID解码成功,且所述上行信息解码成功,向所述终端设备发送第二消息,所述第二消息包括第二标识,所述第二标识为终端设备竞争解决ID。
  65. 根据权利要求64所述的网络设备,其特征在于,所述第二消息为媒体接入控制MAC协议数据单元PDU,所述MAC PDU包括一个或多个MAC子PDU,所述MAC子PDU为以下格式中的一种:
    所述MAC子PDU只包括MAC子包头;
    所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
    所述MAC子PDU包括MAC子包头和MAC控制元素CE;
    所述MAC子PDU包括MAC子包头和填充比特。
  66. 根据权利要求65所述的网络设备,其特征在于,所述上行消息为公共控制信道CCCH服务数据单元SDU,包括M个比特,所述第二标识包含在所述MAC CE中,包括N个比特,其中,M大于或等于N,所述MAC CE的N个比特用于与所述CCCH SDU的N个比特匹配确定竞争冲突是否解决;
    其中,若所述M大于N,所述CCCH SDU的N个比特为所述CCCH SDU的前N个比特。
  67. 根据权利要求66所述的网络设备,其特征在于,所述N为48。
  68. 根据权利要求65至67中任一项所述的网络设备,其特征在于,
    若所述第二消息中的MAC子PDU为以下格式中的一种,所述第二消息中不包括所述第二标识:
    所述MAC子PDU只包括MAC子包头;
    所述MAC子PDU包括MAC子包头和MAC服务数据单元SDU;
    所述MAC子PDU包括MAC子包头和填充比特。
  69. 根据权利要求65至68中任一项所述的网络设备,其特征在于,所述第二消息还包括以下中的至少一个信息:
    回退指示BI,用于指示是否回退至四步随机接入;
    上行定时;
    小区无线网络临时标识符C-RNT或临时小区无线网络临时标识符TC-RNTI;
    至少一个随机接入前导码标识RAPID。
  70. 根据权利要求69所述的网络设备,其特征在于,所述MAC子PDU包括BI子包头,用于承载所述BI;或
    所述MAC子PDU包括RAPID子包头,所述RAPID子包头用于承载RAPID。
  71. 根据权利要求70所述的网络设备,其特征在于,所述RAPID子包头还包括SDU数据长度和逻辑信道标识LCID。
  72. 根据权利要求69至71中任一项所述的网络设备,其特征在于,所述RAR消息包括第一MAC子PDU和第二MAC子PDU,其中,所述第一MAC子PDU包括第二标识,所述第二MAC子PDU包括所述RAPID,
    在所述MAC PDU中,所述第一MAC子PDU位于所述第二MAC子PDU前。
  73. 根据权利要求69至72中任一项所述的网络设备,其特征在于,所述MAC PDU包括第三MAC子PDU,所述第三MAC子PDU包括BI,
    所述第三MAC子PDU为所述MAC PDU的第一个MAC子PDU。
  74. 根据权利要求69至73中任一项所述的网络设备,其特征在于,所述RAR包括第四MAC子PDU,所述第四MAC子PDU包括填充比特,
    所述第四MAC子PDU为所述MAC PDU的最后一个MAC子PDU。
  75. 根据权利要求69至74中任一项所述的网络设备,其特征在于,
    所述上行定时包含在所述MAC子PDU的MAC CE中;
    所述C-RNT或TC-RNTI包含在所述MAC子PDU的MAC CE中;
    所述上行定时和所述C-RNT或TC-RNTI包含在同一个MAC CE中。
  76. 根据权利要求61至75中任一项所述的网络设备,其特征在于,所述第一标识为以下中的至少一种:
    C-RNTI;
    固定比特数的随机数;
    NG-5G-S-临时移动用户标识TMSI;
    I-RNTI,用于标识处于非激活态的终端设备的上下文信息;
    短I-RNTI。
  77. 一种终端设备,其特征在于,包括:处理器和存储器,该存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,执行如权利要求1至22中任一项所述的方法。
  78. 一种芯片,其特征在于,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求1至22中任一项所述的方法。
  79. 一种计算机可读存储介质,其特征在于,用于存储计算机程序,所述计算机程序使得计算机执行如权利要求1至22中任一项所述的方法。
  80. 一种计算机程序产品,其特征在于,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求1至22中任一项所述的方法。
  81. 一种计算机程序,其特征在于,所述计算机程序使得计算机执行如权利要求1至22中任一项所述的方法。
  82. 一种网络设备,其特征在于,包括:处理器和存储器,该存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,执行如权利要求23至38中任一项所述的方法。
  83. 一种芯片,其特征在于,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求23至38中任一项所述的方法。
  84. 一种计算机可读存储介质,其特征在于,用于存储计算机程序,所述计算机程序使得计算机执行如权利要求23至38中任一项所述的方法。
  85. 一种计算机程序产品,其特征在于,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求23至38中任一项所述的方法。
  86. 一种计算机程序,其特征在于,所述计算机程序使得计算机执行如权利要求23至38中任一项所述的方法。
PCT/CN2019/078786 2019-03-19 2019-03-19 无线通信的方法、终端设备和网络设备 WO2020186466A1 (zh)

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EP19920463.7A EP3923668A4 (en) 2019-03-19 2019-03-19 WIRELESS COMMUNICATION METHOD, TERMINAL DEVICE AND NETWORK DEVICE
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CN201980093548.6A CN113519201A (zh) 2019-03-19 2019-03-27 随机接入的方法和设备
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EP19920380.3A EP3930414A4 (en) 2019-03-19 2019-03-27 RANDOM ACCESS METHOD AND DEVICE
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