WO2020215261A1 - 一种随机接入方法及装置、用户设备、网络设备 - Google Patents
一种随机接入方法及装置、用户设备、网络设备 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/02—Access restriction performed under specific conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
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- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
- H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
Definitions
- the embodiments of the present application relate to the field of mobile communication technology, and specifically relate to a random access method and device, user equipment, and network equipment.
- the random access process uses a four-step random access process.
- the four-step random access process in the LTE system is still used.
- the msg1 and msg3 in the four-step random access process are transmitted through msgA in the two-step random access process
- the msg2 and msg4 in the four-step random access process are transmitted through msgB in the two-step random access process. How to design the msgB in the two-step random access process to realize the normal random access process is a problem to be solved.
- the embodiments of the application provide a random access method and device, user equipment, and network equipment.
- the user equipment After the user equipment (User Equipment, UE) sends the first message, it detects the scheduling instruction of the second message in the first window;
- the second message includes at least one of the following: a first conflict resolution identifier, a second conflict resolution identifier, first indication information, and second indication information, wherein the first conflict resolution identifier is used for conflict resolution of a connected UE
- the second conflict resolution identifier is used for conflict resolution of an idle state UE or an inactive state UE or a connected state UE
- the first indication information is used to indicate a fallback from a 2-step random access procedure to a 4-step random access
- the second indication information is used to indicate the random backoff value when the UE retransmits the first message.
- the network device receives the first message sent by the UE, and sends a scheduling instruction for the second message in the first window;
- the second message includes at least one of the following: a first conflict resolution identifier, a second conflict resolution identifier, first indication information, and second indication information, wherein the first conflict resolution identifier is used for conflict resolution of a connected UE
- the second conflict resolution identifier is used for conflict resolution of an idle state UE or an inactive state UE or a connected state UE
- the first indication information is used to indicate a fallback from a 2-step random access procedure to a 4-step random access
- the second indication information is used to indicate the random backoff value when the UE retransmits the first message.
- the random access device provided in the embodiment of the present application is applied to user equipment, and the device includes:
- a receiving unit configured to detect the scheduling instruction of the second message in the first window
- the second message includes at least one of the following: a first conflict resolution identifier, a second conflict resolution identifier, first indication information, and second indication information, wherein the first conflict resolution identifier is used for conflict resolution of a connected UE
- the second conflict resolution identifier is used for conflict resolution of an idle state UE or an inactive state UE or a connected state UE
- the first indication information is used to indicate a fallback from a 2-step random access procedure to a 4-step random access
- the second indication information is used to indicate the random backoff value when the UE retransmits the first message.
- the random access device provided in the embodiment of the present application is applied to network equipment, and the device includes:
- the receiving unit is configured to receive the first message sent by the UE;
- a sending unit configured to send a scheduling instruction of the second message in the first window
- the second message includes at least one of the following: a first conflict resolution identifier, a second conflict resolution identifier, first indication information, and second indication information, wherein the first conflict resolution identifier is used for conflict resolution of a connected UE
- the second conflict resolution identifier is used for conflict resolution of an idle state UE or an inactive state UE or a connected state UE
- the first indication information is used to indicate a fallback from a 2-step random access procedure to a 4-step random access
- the second indication information is used to indicate the random backoff value when the UE retransmits the first message.
- the user equipment provided in the embodiment of the present application includes a processor and a memory.
- the memory is used to store a computer program
- the processor is used to call and run the computer program stored in the memory to execute the aforementioned random access method.
- the network device provided by the embodiment of the present application includes a processor and a memory.
- the memory is used to store a computer program
- the processor is used to call and run the computer program stored in the memory to execute the aforementioned random access method.
- the chip provided in the embodiment of the present application is used to implement the aforementioned random access method.
- 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 the random access method described above.
- the computer-readable storage medium provided by the embodiment of the present application is used to store a computer program, and the computer program enables a computer to execute the random access method described above.
- the computer program product provided by the embodiment of the present application includes computer program instructions, which cause the computer to execute the random access method described above.
- the computer program provided in the embodiment of the present application when it runs on a computer, causes the computer to execute the above-mentioned random access method.
- a msgB format is designed to realize the normal two-step random access process.
- the msgB format proposed in the embodiment of this application can be implemented for the connected state. UE or idle state UE or inactive state UE conflict resolution.
- the msgB format proposed in the embodiment of this application can instruct the UE to fall back from the 2-step random access process to the 4-step random access process.
- the UE in any state only needs to blindly detect the physical downlink control channel (Physical Downlink Control Channel) scrambled by the random access radio network temporary identity (Random Access Radio Network Identity, RA-RNTI) in the msgB receiving window.
- PDCCH Physical Downlink Control Channel
- RA-RNTI Random Access Radio Network Identity
- FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
- Figure 2 is a flowchart of a four-step random access process provided by an embodiment of the present application
- Figure 3-1 is the first structural diagram of MAC PDU provided by an embodiment of this application.
- Figure 3-2 is a structural diagram of the E/T/R/R/BI subheader provided by an embodiment of this application;
- Figure 3-3 is a structural diagram of the E/T/RAPID subheader provided by an embodiment of the application.
- FIG. 4 is a structural diagram of MAC RAR provided by an embodiment of this application.
- FIG. 4 is a schematic flowchart of a random access method provided by an embodiment of the application.
- FIG. 5 is a schematic diagram of transmission of msgA and msgB according to an embodiment of the application
- Figure 6-1 is a structural diagram 1 of the first MAC CE provided by an embodiment of this application.
- Figure 6-2 is the second structural diagram of the first MAC CE provided by an embodiment of this application.
- Figure 6-3 is a structural diagram of the second MAC CE provided by an embodiment of this application.
- Figure 6-4 is a structural diagram 1 of the first subheader provided by an embodiment of the application.
- Fig. 6-5 is a second structural diagram of the first subheader provided by an embodiment of the application.
- Figure 6-6 is the third structural diagram of the first subheader provided by the embodiment of the application.
- Fig. 6-7 is a first structural diagram of a second sub-head provided by an embodiment of this application.
- Figure 6-8 is a second structural diagram of the second subhead provided by an embodiment of this application.
- FIG. 6-9 is the second structural diagram of the MAC PDU provided by the embodiment of this application.
- Figure 6-10 is a fourth structural diagram of the first subheader provided by an embodiment of this application.
- Figure 6-11 is a structural diagram of the third MAC CE provided by an embodiment of the application.
- FIG. 7 is a schematic diagram 1 of the structural composition of a random access device provided by an embodiment of this application.
- FIG. 8 is a second schematic diagram of the structural composition of a random access device provided by an embodiment of this application.
- FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
- FIG. 10 is a schematic structural diagram of a chip of an embodiment of the present application.
- FIG. 11 is a schematic block diagram of a communication system provided by 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.
- Random access is an important process for the UE to establish a wireless connection with the network side. Through random access, it can obtain uplink synchronization with the base station and apply for uplink resources.
- the random access process is divided into a contention-based random access process and a non-competition-based random access process. Among them, the contention-based random access process includes a four-step random access process and a two-step random access process.
- Figure 2 shows the flow chart of the four-step random access process, as shown in Figure 2, the four-step random access process The process includes the following steps:
- Step 201 The UE sends msg1 to the base station.
- the UE sending msg1 to the base station can be specifically implemented through the following process:
- the UE determines the relationship between the synchronization signal block (Synchronization Signal Block, SSB) and the physical random access channel (Physical Random Access Channel, PRACH) resources (configured by higher layers);
- SSB Synchronization Signal Block
- PRACH Physical Random Access Channel
- the UE receives a set of SSBs and determines its Reference Signal Received Power (RSRP) value, and selects the appropriate SSB according to the threshold;
- RSRP Reference Signal Received Power
- the UE determines the PRACH resource based on the selected SSB and the corresponding relationship between the SSB and the PRACH resource;
- the UE sends the preamble on the PRACH time-frequency domain resources.
- Step 202 The UE receives msg2 sent by the base station.
- the UE receiving the msg2 sent by the base station can be specifically implemented through the following process:
- the UE sends the preamble to the first Physical Downlink Control Channel (PDCCH) at the opportunity to open the RAR window (ra-Response Window) and monitor the PDCCH during the operation of the window, where PDCCH is PDCCH scrambled with RA-RNTI.
- RA-RNTI is related to the PRACH time-frequency resource selected by the UE. The calculation of RA-RNTI is as follows:
- 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 an uplink (Uplink, UL) carrier used for preamble index transmission.
- MAC PDU includes multiple MAC subPDUs (MAC subPDU), namely MAC subPDU1, MAC subPDU2, MAC subPDU3 and so on.
- MAC subPDU1 includes Backoff Indication (BI)
- MAC subPDU1 includes E/T/R/R/BI subheader
- the structure of E/T/R/R/BI subheader is shown in Figure 3-2.
- MAC subPDU2 includes Random Access preamble ID (RAPID)
- RAPID Random Access preamble ID
- MAC subPDU2 includes E/T/RAPID subheader
- the structure of E/T/RAPID subheader is shown in Figure 3-3.
- the remaining MAC subPDUs include RAPID and Random Access Response (RAR).
- MAC subPDU3 includes E/T/RAPID subheader and MAC RAR, and the structure of E/T/RAPID subheader As shown in Figure 3-3, the structure of MAC RAR is shown in Figure 3-4.
- the description of each information in Figure 3-2 to Figure 3-4 is as follows:
- fallback indication information used to indicate the fallback time for retransmission of the first step message.
- RAPID The preamble index received in the network response.
- R stands for reserved bit area.
- TAC Timing Advance Command, used to adjust the uplink timing.
- Uplink Grant used to indicate resources for uplink transmission of Msg3.
- TC-RNTI Temporary cell RNTI (Temporary C-RNTI), used for the terminal to subsequently scramble the sent Msg3 message.
- Step 203 The UE sends msg3 to the base station.
- msg3 is mainly used to send UE ID to the network to resolve contention conflicts. For example, if it is an initial access random process, msg3 will carry an RRC layer message, that is, CCCH SDU, which contains the UE ID and a connection establishment request (RRCSetupRequest); if it is an RRC reestablishment, it will carry a re-establishment request (RRCRestablishmentRequest). ).
- Step 204 The UE receives msg4 sent by the base station.
- msg4 has two functions. The first is to resolve contention conflicts; the second is to transmit RRC configuration messages to the terminal.
- the UE receives the DCI format 1_0 of the Cell-Radio Network Temporary Identifier (C-RNTI) scrambling code and its corresponding PDSCH, the random access is complete; if the terminal receives the TC-RNTI scrambling code DCI format 1_0 and its corresponding PDSCH, and the content is successfully compared, and random access is completed.
- C-RNTI Cell-Radio Network Temporary Identifier
- the two-step random access process is in the process of standardization discussion and is in the research stage.
- the two-step random access process can increase the delay and reduce the signaling overhead.
- msgA transmits msg1 and msg3 of the four-step random access process
- msgB transmits msg2 of the four-step random access process.
- msg4 To receive msgB in the two-step random access process, the receiving window needs to be opened.
- the UE detects the PDCCH scheduling msgB within the receiving window. If the UE receives the PDCCH scheduling msgB within the receiving window, the UE will check the scheduling information in the PDCCH.
- Receive PDSCH, PDSCH contains msgB.
- the msgB in the two-step random access process needs to include the content of msg2 and msg4, and the UE conflict resolution needs to be implemented, the following technical solutions of the embodiments of the present application are proposed.
- FIG. 4 is a schematic flow chart of the random access method provided by an embodiment of the application.
- the random access method of the embodiment of the application is applied to a two-step random access process. As shown in FIG. 4, the random access method includes the following steps :
- Step 401 After the UE sends the first message, it detects the scheduling instruction of the second message in the first window; the second message includes at least one of the following: a first conflict resolution identifier, a second conflict resolution identifier, and a first indication Information and second indication information, wherein the first conflict resolution identifier is used for conflict resolution of a connected UE, and the second conflict resolution identifier is used for conflict resolution of an idle UE or an inactive UE or a connected UE, The first indication information is used to indicate the fallback from the 2-step random access process to the 4-step random access process, and the second indication information is used to indicate the random response of the UE when retransmitting the first message. Return value.
- the two-step random access procedure includes two steps: 1) the UE sends msgA to the network device; 2) the network device sends msgB to the UE.
- the first message is msgA
- the second message is msgB.
- the network equipment mentioned in the embodiments of this application includes but is not limited to LTE base station (eNB) and NR base station (gNB.)
- the UE mentioned in the embodiments of this application may be any device capable of communicating with the network, such as a mobile phone, a notebook, a tablet computer, a vehicle-mounted terminal, and a wearable terminal.
- the network device receives the first message sent by the UE. Then, the network device sends the scheduling instruction (such as PDCCH) of the second message (such as msgB) in the first window, and accordingly, the UE will detect the scheduling instruction of the second message in the first window.
- the first message includes a preamble and an uplink data channel (such as PUSCH).
- Fig. 5 taking the network device as the gNB as an example, in the two-step random access process, after the UE sends msgA, it blindly checks the scheduling command of msgB in the first window (or starts a timer, Blind inspection of msgB scheduling instructions during timer operation).
- msgA is composed of a preamble and PUSCH, and the time when the first window starts (or the time when the timer is turned on) is after the PUSCH is sent.
- the UE blindly detects the PDCCH in the first window (or during the running of the timer).
- the PDCCH is scrambled by the RA-RNTI, and the calculation method of the RA-RNTI is consistent with the RA-RNTI of the RAR in the four-step random access process. It should be noted that whether the same RA-RNTI is used to blindly detect msgB is not limited in the embodiment of this application.
- the UE If the UE successfully blindly detects the PDCCH scrambled by RA-RNTI in the first window (or during the timer operation), the UE starts to process the PDSCH scheduled by the PDCCH, which contains msgB; if the UE is in the first window (or timing During the operation of the device), if the RA-RNTI scrambled PDCCH is not blindly detected, the UE retransmits msgA.
- the second message includes at least one of the following:
- the first conflict resolution identifier where the first conflict resolution identifier is used for conflict resolution of the connected UE.
- the second conflict resolution identifier which is used for conflict resolution of an idle state UE or an inactive state UE or a connected state UE.
- Second indication information where the second indication information is used to indicate a random backoff value when the UE retransmits the first message.
- the second message includes a MAC PDU, and the MAC PDU Include at least one of the following:
- a first MAC CE the first MAC CE carries the first conflict resolution identifier, and the first conflict resolution identifier is a cell radio network temporary identifier (Cell-RNTI, C-RNTI).
- the first MAC CE may also be referred to as C-RNTI MAC CE.
- the second MAC CE the second MAC CE carries the second conflict resolution identifier (that is, the Contention resolution ID).
- the second MAC CE may also be called Contention resolution MAC CE.
- the third MAC CE, the third MAC CE carries RAR, and the RAR is used to indicate a fallback from a 2-step random access process to a 4-step random access process.
- the content of the RAR may be the content of msg2 in the four-step random access process, and further, a RAPID may be added to the RAR.
- the first MAC CE also carries uplink timing advance information.
- the first MAC CE includes: C-RNTI and TAC.
- TAC is used by the UE to adjust the uplink TA for subsequent uplink transmission
- C-RNTI is used to resolve contention conflicts, that is, if the C-RNTI in msgB received by the UE is consistent with the C-RNTI carried in msgA, the conflict is considered to be resolved.
- the first MAC CE also carries uplink timing advance information and uplink scheduling information.
- the contents of the first MAC CE include: C-RNTI, TAC, UL grant. It should be noted that the position of these contents in the first MAC CE can be changed. This implementation The example is just an example.
- the first MAC CE of this format triggers the random access process for the following situations:
- the second MAC CE also carries uplink timing advance information and C-RNTI.
- the content contained in the second MAC CE includes: Contention Resolution ID, TAC, and C-RNTI.
- TAC uses the UE to adjust the uplink TA for subsequent uplink transmission
- C-RNTI is used for PDCCH scrambling for subsequent data scheduling
- Contention Resolution ID is used for conflict resolution, that is, if the UE receives the contention resolution ID in msgB and the one carried in msgA If the CCCH SDU matches, it is considered that the conflict is resolved.
- the UE initiates an RRC reestablishment (RRC reestablishment) to trigger random access.
- RRC reestablishment RRC reestablishment
- the conflict resolution is also implemented through the second conflict resolution identifier, but in this scenario, the UE is in the connected state.
- the RAR in the third MAC CE includes uplink timing advance information (such as TAC), uplink scheduling information (such as UL grant), and temporary cell radio network temporary identification (TC- RNTI).
- uplink timing advance information such as TAC
- uplink scheduling information such as UL grant
- TC- RNTI temporary cell radio network temporary identification
- the third MAC CE it is the same as the MAC RAR format in msg2 in the four-step random access process. Refer to Figure 3-4 for the specific format.
- the content includes: TAC, UL Grant, and TC-RNTI.
- the RAR in the third MAC CE includes uplink timing advance information (such as TAC), uplink scheduling information (such as UL grant), TC-RNTI, and RAPID.
- uplink timing advance information such as TAC
- uplink scheduling information such as UL grant
- TC-RNTI such as TC-RNTI
- RAPID the specific format is shown in Figure 6-11, and the content included: TAC, UL Grant, TC-RNTI, and RAPID.
- the main purpose of carrying RAPID in the third MAC CE is to make the corresponding first sub-header only contain 1 byte, which is consistent with the size of other sub-headers. Refer to the description in the second extended solution below.
- the second indication information is BI information, which is used to indicate the random backoff value of the UE when retransmitting the first message. That is, for those UEs whose network equipment does not detect msgA, they need to backoff according to BI to reduce conflicts.
- the above 1), 2), 3), and 4) can be carried in the second message in any combination.
- msgB can contain 3) and 4). This situation corresponds to the fact that the network device did not detect any corresponding PUSCH (ie payload) on a certain random access opportunity (RO), but only detected one Or some preambles. At this time, the network equipment can fall back to the four-step random access process for these UEs in a four-step random access process.
- RO random access opportunity
- msgB can contain 1), 3) and 4).
- msgB can contain 2), 3) and 4).
- msgB can contain 1), 2), 3) and 4).
- BI information may or may not be included in msgB.
- the content included in the MAC PDU will be described in detail below in conjunction with the specific implementation form of the MAC PDU of the second message.
- the MAC PDU includes multiple first MAC subPDUs, the first MAC subPDU includes a first subheader and a target MAC CE, and the first subheader carries third indication information, and the third indication information It is used to indicate the type of the target MAC CE, and the type of the target MAC CE refers to the first MAC CE, or the second MAC CE, or the third MAC CE.
- the first subheader carries RAPID.
- msgB can be detected by multiple UEs using the same RO, so RAPID is still required to instruct UEs with different preambles, that is, when the UE detects the msgB, it will find the first one according to the preamble index used in msgA The RAPID in the subheader, to see if it matches the preamble index in msgA.
- the first subheader carries third indication information
- the third indication information is used to indicate the type of the target MAC CE.
- the third indication information can be implemented in the following manner:
- the third indication information is an LCID, and the LCID is used to indicate the type of the target MAC CE.
- the content contained in the first subheader includes RAPID and LCID, where LCID is used to indicate different MAC CE types.
- the third indication information is the first type information, and the first type information is used to indicate the type of the target MAC CE and/or the type of the subheader.
- the first sub-header type refers to the BI sub-header, and the content contained in the BI sub-header includes the first type of information and BI. Information;
- the second sub-header type refers to a sub-header that only contains the first type of information. Further, the second sub-header may or may not contain RAPID.
- the first type information carried in the first subheader is used to indicate the type of the target MAC CE corresponding to the first subheader and/or the type of the first subheader.
- the first type of information uses 3 bits to indicate four different types. Of course, how many bits are used depends on how many different types of MAC CE need to be indicated. Taking the first type of information including 3bit as an example, the type indicated is shown in Table 1 below:
- the third MAC CE (see Figure 3-4) 001 The first MAC CE (format one, see Figure 6-1) 010 The first MAC CE (format two, see Figure 6-2) 011 Second MAC CE (see Figure 6-3) 100 Padding 101 BI subhead
- the first sub-header contains RAPID and first type information (T1), where T1 is used to indicate different MAC CE types, and T1 in Figure 6-5 contains 3 bits.
- the first subheader in order to be compatible with the four-step random access process, contains RAPID, second type information (T), and first type information (T1), where T is used for Indicate whether the first subheader contains RAPID or BI information, and T1 is used to indicate different MAC CE types.
- T1 in Figure 6-6 contains 2 bits and can only indicate at most four different MAC CE types.
- the MAC PDU also includes a second MAC sub-PDU, the second MAC sub-PDU includes only a second sub-header, the second sub-header carries the second indication information, and the second indication information is BI information.
- the second subheader also carries first type information, where the first type information is used to indicate the type of the target MAC CE and/or the type of the subheader.
- the first type information carried in the second subheader is used to indicate the type of the second subheader (that is, the BI subheader).
- the second subheader also carries second type information, and the second type information is used to indicate whether the second subheader contains RAPID or BI information.
- the second sub-header contains BI and the first type of information (T1).
- T1 is used to indicate that the second sub-header contains BI information.
- T1 in Figure 6-7 contains 3 bits.
- the second subheader in order to be compatible with the four-step random access process, contains BI and second type information (T).
- T is used to indicate that the second subheader contains BI information .
- T in Figure 6-8 contains 1 bit.
- the MAC PDU includes multiple MAC subPDUs (MAC subPDU), namely MAC subPDU1, MAC subPDU2, MAC subPDU3, and so on.
- MAC subPDU1 includes a second subheader
- the format of the second subheader is shown in Figure 6-7 or Figure 6-8.
- Other MAC subPDUs other than MAC subPDU1 for example, MAC subPDU2 includes a first subheader and a target MAC CE.
- the target MAC CE may be the aforementioned first MAC CE, or second MAC CE, or third MAC CE.
- the format parameters of the first subheader are shown in Figure 6-4 or Figure 6-5 or Figure 6-6.
- the following extended solution may also be adopted.
- the second subheader (that is, the subheader carrying BI) contains 1 byte (see Figure 6-7), and the first subheader of the first MAC CE and the second MAC CE contains 1 byte (see Figure 6-10),
- the first subheader of the third MAC CE contains 2 bytes (refer to Figure 6-5).
- the first subheader of the first MAC CE and the second MAC CE only contains the first type of information (T1).
- T1 is shown in Table 2 below:
- the advantage of scheme one is that it can save 1 byte of overhead for subheader; if there are more first MAC CE or second MAC CE responding to different UEs, the UE needs to try many MAC subPDUs to find its own MAC subPDU.
- a subheader can be designed so that the subheader is 1 byte.
- the RAPID in the first subheader can be moved to the third MAC CE.
- the second subheader that is, the subheader carrying BI
- the first subheader of the first MAC CE, the second MAC CE, and the third MAC CE contains 1 byte (refer to As shown in Figure 6-10).
- the format of the third MAC CE needs to be modified as shown in Figure 6-11, and the content included: TAC, UL Grant, TC-RNTI, and RAPID.
- Table 3 The value of T1 in Figure 6-10 is shown in Table 3 below:
- a subheader can be designed so that the subheader is 1 byte.
- the third MAC CE in msgB is sent in another PDSCH.
- the second subheader that is, the subheader carrying BI
- the first subheader of the first MAC CE and the second MAC CE contains 1 byte (see Figure 6-10). Show).
- the value of T1 in Figure 6-10 is shown in Table 4 below:
- the embodiment of this application also specifies the behavior of two types of UE upon receiving the MAC PDU, which can be divided into:
- the first type of UE a connected UE.
- the UE transmits at least a fourth MAC CE in the uplink data channel of the first message, and the fourth MAC CE carries a C-RNTI. That is: the connected UE will transmit C-RNTI MAC CE in the PUSCH of msgA.
- the UE of the first type After transmitting the first message, the UE of the first type receives the scheduling instruction of the second message in the first window/timer. If the UE receives the scheduling instruction of the second message in the first window, then The UE determines whether the MAC PDU includes the first MAC CE and/or the third MAC CE through the third indication information carried in the MAC PDU of the second message, where:
- the conflict is resolved.
- the first MAC CE may not be included in the MAC PDU.
- the UE conflict resolution is implemented by receiving the PDCCH scrambled by the C-RNTI. Specifically, if there is no third MAC CE in the second message received by the UE, the UE continues to blindly check whether there is a PDCCH scrambled by the C-RNTI. That is to say, the first type of UE needs to blindly detect the PDCCH scrambled by RA-RNTI and the PDCCH scrambled by C-RNTI. Among them, the PDCCH scrambled by C-RNTI is used for conflict resolution.
- the UE falls back from the 2-step random access process to the 4-step random access process.
- the UE retransmits the first message after the first window ends, wherein the retransmission of the first message is The BI value in the second message is rolled back.
- the second type of UE idle state UE or inactive state UE or connected state UE
- the UE transmits the CCCH SDU in the uplink data channel of the first message. That is, the idle state UE or the inactive state UE or the connected state UE will transmit CCCH SDU in the new PUSCH of msgA.
- the second type of UE After the second type of UE transmits the first message, it receives the scheduling instruction of the second message in the first window/timer. If the UE receives the scheduling instruction of the second message in the first window, then The UE determines whether the MAC PDU includes a second MAC CE and/or a third MAC CE through the third indication information carried in the MAC PDU of the second message, where:
- the conflict is resolved.
- the UE falls back from the 2-step random access process to the 4-step random access process.
- the UE retransmits the first message after the first window ends, wherein the retransmission of the first message is The BI value in the second message is rolled back.
- FIG. 7 is a schematic diagram 1 of the structural composition of a random access device provided by an embodiment of the application.
- the random access device is applied to user equipment, and the device includes:
- the sending unit 701 is configured to send the first message
- the receiving unit 702 is configured to detect the scheduling instruction of the second message in the first window
- the second message includes at least one of the following: a first conflict resolution identifier, a second conflict resolution identifier, first indication information, and second indication information, wherein the first conflict resolution identifier is used for conflict resolution of a connected UE
- the second conflict resolution identifier is used for conflict resolution of an idle state UE or an inactive state UE or a connected state UE
- the first indication information is used to indicate a fallback from a 2-step random access procedure to a 4-step random access
- the second indication information is used to indicate the random backoff value when the UE retransmits the first message.
- the first message includes a preamble and an uplink data channel.
- the second message includes a MAC PDU
- the MAC PDU includes at least one of the following:
- a first MAC CE where the first MAC CE carries the first conflict resolution identifier, and the first conflict resolution identifier is C-RNTI;
- a second MAC CE where the second MAC CE carries the second conflict resolution identifier
- the third MAC CE, the third MAC CE carries RAR, and the RAR is used to indicate a fallback from a 2-step random access process to a 4-step random access process.
- the first MAC CE also carries uplink timing advance information.
- the first MAC CE also carries uplink timing advance information and uplink scheduling information.
- the second MAC CE also carries uplink timing advance information and C-RNTI.
- the RAR includes uplink timing advance information, uplink scheduling information, and TC-RNTI.
- the RAR includes uplink timing advance information, uplink scheduling information, TC-RNTI, and RAPID.
- the MAC PDU includes a plurality of first MAC sub-PDUs, the first MAC sub-PDU includes a first sub-header and a target MAC CE, and the first sub-header carries third indication information.
- the third indication information is used to indicate the type of the target MAC CE, and the type of the target MAC CE refers to the first MAC CE, or the second MAC CE, or the third MAC CE.
- the third indication information is an LCID, and the LCID is used to indicate the type of the target MAC CE.
- the third indication information is first type information, and the first type information is used to indicate the type of the target MAC CE and/or the type of the first subheader.
- the first subheader also carries RAPID.
- the first subheader further carries second type information, and the second type information is used to indicate whether the first subheader contains RAPID or BI information.
- the MAC PDU further includes a second MAC subPDU, the second MAC subPDU includes only a second subheader, the second subheader carries the second indication information, and the first The second indication information is BI information.
- the second subheader further carries first type information, and the first type information is used to indicate the type of the second subheader.
- the second subheader further carries second type information, and the second type information is used to indicate whether the second subheader contains RAPID or BI information.
- the user equipment when the user equipment is a connected UE,
- the sending unit 701 transmits at least a fourth MAC CE in the uplink data channel of the first message, and the fourth MAC CE carries a C-RNTI.
- the device further includes:
- the determining unit 703 is configured to, if the receiving unit receives the scheduling instruction of the second message within the first window, determine through the third indication information carried in the MAC PDU of the second message Whether the MAC PDU includes the first MAC CE and/or the third MAC CE.
- the device further includes a processing unit 704, configured to:
- the conflict is resolved;
- the 2-step random access process will fall back to the 4-step random access process;
- the first message is retransmitted after the first window ends, and the second message is used for retransmission of the first message.
- the BI value in the message is rolled back.
- the user equipment when the user equipment is an idle state UE, an inactive state UE, or a connected state UE,
- the sending unit 701 transmits the CCCH SDU in the uplink data channel of the first message.
- the device further includes:
- the determining unit 703 is configured to, if the receiving unit receives the scheduling instruction of the second message in the first window, determine through the third indication information carried in the MAC PDU of the second message Whether the MAC PDU includes a second MAC CE and/or a third MAC CE.
- the device further includes a processing unit 704, configured to:
- the conflict is resolved
- the 2-step random access process will fall back to the 4-step random access process;
- the first message is retransmitted after the first window ends, and the second message is used for retransmission of the first message.
- the BI value in the message is rolled back.
- FIG. 8 is a schematic diagram 2 of the structural composition of a random access device provided by an embodiment of the application.
- the random access device is applied to network equipment, and the device includes:
- the receiving unit 801 is configured to receive the first message sent by the UE;
- the sending unit 802 is configured to send a scheduling instruction of the second message in the first window
- the second message includes at least one of the following: a first conflict resolution identifier, a second conflict resolution identifier, first indication information, and second indication information, wherein the first conflict resolution identifier is used for conflict resolution of a connected UE
- the second conflict resolution identifier is used for conflict resolution of an idle state UE or an inactive state UE or a connected state UE
- the first indication information is used to indicate a fallback from a 2-step random access procedure to a 4-step random access
- the second indication information is used to indicate the random backoff value when the UE retransmits the first message.
- the first message includes a preamble and an uplink data channel.
- the second message includes a MAC PDU
- the MAC PDU includes at least one of the following:
- a first MAC CE where the first MAC CE carries the first conflict resolution identifier, and the first conflict resolution identifier is C-RNTI;
- a second MAC CE where the second MAC CE carries the second conflict resolution identifier
- the third MAC CE, the third MAC CE carries a random access response RAR, and the RAR is used to indicate a fallback from a 2-step random access process to a 4-step random access process.
- the first MAC CE also carries uplink timing advance information.
- the first MAC CE also carries uplink timing advance information and uplink scheduling information.
- the second MAC CE also carries uplink timing advance information and C-RNTI.
- the RAR includes uplink timing advance information, uplink scheduling information, and TC-RNTI.
- the RAR includes uplink timing advance information, uplink scheduling information, TC-RNTI, and RAPID.
- the MAC PDU includes a plurality of first MAC sub-PDUs, the first MAC sub-PDU includes a first sub-header and a target MAC CE, and the first sub-header carries third indication information.
- the third indication information is used to indicate the type of the target MAC CE, and the type of the target MAC CE refers to the first MAC CE, or the second MAC CE, or the third MAC CE.
- the third indication information is LCID, and the LCID is used to indicate the type of the target MAC CE and/or the type of the first subheader.
- the third indication information is first type information, and the first type information is used to indicate the type of the target MAC CE.
- the first subheader also carries RAPID.
- the first subheader further carries second type information, and the second type information is used to indicate whether the first subheader contains RAPID or BI information.
- the MAC PDU further includes a second MAC subPDU, the second MAC subPDU includes only a second subheader, the second subheader carries the second indication information, and the first The second indication information is BI information.
- the second subheader further carries first type information, and the first type information is used to indicate the type of the second subheader.
- the second subheader further carries second type information, and the second type information is used to indicate whether the second subheader contains RAPID or BI information.
- FIG. 9 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application.
- the communication device may be a user equipment or a network device.
- the communication device 600 shown in FIG. 9 includes a processor 610.
- 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. 10 is a schematic structural diagram of a chip of an embodiment of the present application.
- the chip 700 shown in FIG. 10 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, etc.
- FIG. 11 is a schematic block diagram of a communication system 1100 according to an embodiment of the present application. As shown in FIG. 11, the communication system 1100 includes a user equipment 1110 and a network device 1120.
- the user equipment 1110 can be used to implement the corresponding functions implemented by the terminal device in the above method
- the network equipment 1120 can be used to implement the corresponding functions 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 ,
- 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 ,
- 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
Description
000 | 第三MAC CE(见图3-4) |
001 | 第一MAC CE(格式一,见图6-1) |
010 | 第一MAC CE(格式二,见图6-2) |
011 | 第二MAC CE(见图6-3) |
100 | 填充(Padding) |
101 | BI子头 |
000 | BI子头 |
001 | 第一MAC CE(格式一,见图6-1) |
010 | 第一MAC CE(格式二,见图6-2) |
011 | 第二MAC CE(见图6-3) |
100 | 第三MAC CE(见图3-4) |
101 | 填充(Padding) |
000 | BI子头 |
001 | 第一MAC CE(格式一,见图6-1) |
010 | 第一MAC CE(格式二,见图6-2) |
011 | 第二MAC CE(见图6-3) |
100 | 第三MAC CE(见图6-10) |
101 | 填充(Padding) |
000 | BI子头 |
001 | 第一MAC CE(格式一,见图6-1) |
010 | 第一MAC CE(格式二,见图6-2) |
011 | 第二MAC CE(见图6-3) |
101 | 填充(Padding) |
Claims (86)
- 一种随机接入方法,所述方法包括:用户设备UE发送完第一消息后,在第一窗口内检测第二消息的调度指令;所述第二消息包括以下至少之一:第一冲突解决标识、第二冲突解决标识、第一指示信息、第二指示信息,其中,所述第一冲突解决标识用于连接态UE的冲突解决,所述第二冲突解决标识用于空闲态UE或非激活态UE或连接态UE的冲突解决,所述第一指示信息用于指示从2步随机接入过程回退到4步随机接入过程,所述第二指示信息用于指示所述UE在重传所述第一消息时的随机回退值。
- 根据权利要求1所述的方法,其中,所述第一消息包括前导码和上行数据信道。
- 根据权利要求1或2所述的方法,其中,所述第二消息包括媒体接入控制协议数据单元MAC PDU,所述MAC PDU包括以下至少之一:第一媒体接入控制控制单元MAC CE,所述第一MAC CE携带所述第一冲突解决标识,所述第一冲突解决标识为小区无线网络临时标识C-RNTI;第二MAC CE,所述第二MAC CE携带所述第二冲突解决标识;第三MAC CE,所述第三MAC CE携带随机接入响应RAR,所述RAR用于指示从2步随机接入过程回退到4步随机接入过程。
- 根据权利要求3所述的方法,其中,所述第一MAC CE还携带上行定时提前量信息。
- 根据权利要求3所述的方法,其中,所述第一MAC CE还携带上行定时提前量信息和上行调度信息。
- 根据权利要求3至5中任一项所述的方法,其中,所述第二MAC CE还携带上行定时提前量信息和C-RNTI。
- 根据权利要求3至6中任一项所述的方法,其中,所述RAR包括上行定时提前量信息、上行调度信息以及临时小区无线网络临时标识TC-RNTI。
- 根据权利要求3至6中任一项所述的方法,其中,所述RAR包括上行定时提前量信息、上行调度信息、TC-RNTI以及随机接入前导码标识RAPID。
- 根据权利要求3至8中任一项所述的方法,其中,所述MAC PDU包括多个第一MAC子PDU,所述第一MAC子PDU包括第一子头和目标MAC CE,所述第一子头携带第三指示信息,所述第三指示信息用于指示所述目标MAC CE的类型,所述目标MAC CE的类型是指所述第一MAC CE,或者所述第二MAC CE,或者所述第三MAC CE。
- 根据权利要求9所述的方法,其中,所述第三指示信息为逻辑信道标识LCID,所述LCID用于指示所述目标MAC CE的类型。
- 根据权利要求9所述的方法,其中,所述第三指示信息为第一类型信息,所述第一类型信息用于指示所述目标MAC CE的类型和/或所述第一子头的类型。
- 根据权利要求9至11中任一项所述的方法,其中,所述第一子头还携带RAPID。
- 根据权利要求12所述的方法,其中,所述第一子头还携带第二类型信息,所述第二类型信息用于指示所述第一子头是包含RAPID还是包含回退指示BI信息。
- 根据权利要求9至13中任一项所述的方法,其中,所述MAC PDU还包括一个第二MAC子PDU,所述第二MAC子PDU只包括第二子头,所述第二子头携带所述第二指示信息,所述第二指示信息为BI信息。
- 根据权利要求14所述的方法,其中,所述第二子头还携带第一类型信息,所 述第一类型信息用于指示所述第二子头的类型。
- 根据权利要求14所述的方法,其中,所述第二子头还携带第二类型信息,所述第二类型信息用于指示所述第二子头是包含RAPID还是包含BI信息。
- 根据权利要求9至16中任一项所述的方法,其中,所述UE为连接态UE的情况下,所述UE在所述第一消息的上行数据信道中至少传输第四MAC CE,所述第四MAC CE携带C-RNTI。
- 根据权利要求17所述的方法,其中,所述方法还包括:如果所述UE在所述第一窗口内收到所述第二消息的调度指令,则所述UE通过所述第二消息的MAC PDU中携带的所述第三指示信息,确定所述MAC PDU中是否包含第一MAC CE和/或第三MAC CE。
- 根据权利要求18所述的方法,其中,所述方法还包括:如果所述MAC PDU中包含第一MAC CE,且所述第一MAC CE中的C-RNTI与所述第一消息中的C-RNTI一致,则冲突解决;如果所述MAC PDU中包含第三MAC CE,且所述第三MAC CE中包含的RAPID或者第三MAC CE对应的第一子包头中的RAPID与所述第一消息中的前导码的索引信息一致,则所述UE从2步随机接入过程回退到4步随机接入过程;如果所述MAC PDU中未包含第一MAC CE和第三MAC CE,则所述UE在所述第一窗口结束后重传所述第一消息,其中,所述第一消息的重传采用所述第二消息中的BI值做回退。
- 根据权利要求9至16中任一项所述的方法,其中,所述UE为空闲态UE或非激活态UE或连接态UE的情况下,所述UE在所述第一消息的上行数据信道中传输公共控制信道服务数据单元CCCH SDU。
- 根据权利要求20所述的方法,其中,所述方法还包括:如果所述UE在所述第一窗口内收到所述第二消息的调度指令,则所述UE通过所述第二消息的MAC PDU中携带的所述第三指示信息,确定所述MAC PDU中是否包含第二MAC CE和/或第三MAC CE。
- 根据权利要求21所述的方法,其中,所述方法还包括:如果所述MAC PDU中包含第二MAC CE,且所述第二MAC CE中的第二冲突解决标识与所述第一消息中的CCCH SDU匹配,则冲突解决;如果所述MAC PDU中包含第三MAC CE,且所述第三MAC CE中包含的RAPID或者第三MAC CE对应的第一子包头中的RAPID与所述第一消息中的前导码的索引信息一致,则所述UE从2步随机接入过程回退到4步随机接入过程;如果所述MAC PDU中未包含第二MAC CE和第三MAC CE,则所述UE在所述第一窗口结束后重传所述第一消息,其中,所述第一消息的重传采用所述第二消息中的BI值做回退。
- 一种随机接入方法,所述方法包括:网络设备接收UE发送的第一消息,在第一窗口内发送第二消息的调度指令;所述第二消息包括以下至少之一:第一冲突解决标识、第二冲突解决标识、第一指示信息、第二指示信息,其中,所述第一冲突解决标识用于连接态UE的冲突解决,所述第二冲突解决标识用于空闲态UE或非激活态UE或连接态UE的冲突解决,所述第一指示信息用于指示从2步随机接入过程回退到4步随机接入过程,所述第二指示信息用于指示所述UE在重传所述第一消息时的随机回退值。
- 根据权利要求23所述的方法,其中,所述第一消息包括前导码和上行数据信道。
- 根据权利要求23或24所述的方法,其中,所述第二消息包括MAC PDU,所述MAC PDU包括以下至少之一:第一MAC CE,所述第一MAC CE携带所述第一冲突解决标识,所述第一冲突解决标识为C-RNTI;第二MAC CE,所述第二MAC CE携带所述第二冲突解决标识;第三MAC CE,所述第三MAC CE携带随机接入响应RAR,所述RAR用于指示从2步随机接入过程回退到4步随机接入过程。
- 根据权利要求25所述的方法,其中,所述第一MAC CE还携带上行定时提前量信息。
- 根据权利要求25所述的方法,其中,所述第一MAC CE还携带上行定时提前量信息和上行调度信息。
- 根据权利要求25至27中任一项所述的方法,其中,所述第二MAC CE还携带上行定时提前量信息和C-RNTI。
- 根据权利要求25至28中任一项所述的方法,其中,所述RAR包括上行定时提前量信息、上行调度信息以及TC-RNTI。
- 根据权利要求25至28中任一项所述的方法,其中,所述RAR包括上行定时提前量信息、上行调度信息、TC-RNTI以及RAPID。
- 根据权利要求25至30中任一项所述的方法,其中,所述MAC PDU包括多个第一MAC子PDU,所述第一MAC子PDU包括第一子头和目标MAC CE,所述第一子头携带第三指示信息,所述第三指示信息用于指示所述目标MAC CE的类型,所述目标MAC CE的类型是指所述第一MAC CE,或者所述第二MAC CE,或者所述第三MAC CE。
- 根据权利要求31所述的方法,其中,所述第三指示信息为LCID,所述LCID用于指示所述目标MAC CE的类型。
- 根据权利要求31所述的方法,其中,所述第三指示信息为第一类型信息,所述第一类型信息用于指示所述目标MAC CE的类型和/或所述第一子头的类型。
- 根据权利要求31至33中任一项所述的方法,其中,所述第一子头还携带RAPID。
- 根据权利要求34所述的方法,其中,所述第一子头还携带第二类型信息,所述第二类型信息用于指示所述第一子头是包含RAPID还是包含BI信息。
- 根据权利要求31至35中任一项所述的方法,其中,所述MAC PDU还包括一个第二MAC子PDU,所述第二MAC子PDU只包括第二子头,所述第二子头携带所述第二指示信息,所述第二指示信息为BI信息。
- 根据权利要求36所述的方法,其中,所述第二子头还携带第一类型信息,所述第一类型信息用于指示所述第二子头的类型。
- 根据权利要求36所述的方法,其中,所述第二子头还携带第二类型信息,所述第二类型信息用于指示所述第二子头是包含RAPID还是包含BI信息。
- 一种随机接入装置,应用于用户设备,所述装置包括:发送单元,用于发送第一消息;接收单元,用于在第一窗口内检测第二消息的调度指令;所述第二消息包括以下至少之一:第一冲突解决标识、第二冲突解决标识、第一指示信息、第二指示信息,其中,所述第一冲突解决标识用于连接态UE的冲突解决, 所述第二冲突解决标识用于空闲态UE或非激活态UE或连接态UE的冲突解决,所述第一指示信息用于指示从2步随机接入过程回退到4步随机接入过程,所述第二指示信息用于指示所述UE在重传所述第一消息时的随机回退值。
- 根据权利要求39所述的装置,其中,所述第一消息包括前导码和上行数据信道。
- 根据权利要求39或40所述的装置,其中,所述第二消息包括MAC PDU,所述MAC PDU包括以下至少之一:第一MAC CE,所述第一MAC CE携带所述第一冲突解决标识,所述第一冲突解决标识为C-RNTI;第二MAC CE,所述第二MAC CE携带所述第二冲突解决标识;第三MAC CE,所述第三MAC CE携带RAR,所述RAR用于指示从2步随机接入过程回退到4步随机接入过程。
- 根据权利要求41所述的装置,其中,所述第一MAC CE还携带上行定时提前量信息。
- 根据权利要求41所述的装置,其中,所述第一MAC CE还携带上行定时提前量信息和上行调度信息。
- 根据权利要求41至43中任一项所述的装置,其中,所述第二MAC CE还携带上行定时提前量信息和C-RNTI。
- 根据权利要求41至44中任一项所述的装置,其中,所述RAR包括上行定时提前量信息、上行调度信息以及TC-RNTI。
- 根据权利要求41至44中任一项所述的装置,其中,所述RAR包括上行定时提前量信息、上行调度信息、TC-RNTI以及RAPID。
- 根据权利要求41至46中任一项所述的装置,其中,所述MAC PDU包括多个第一MAC子PDU,所述第一MAC子PDU包括第一子头和目标MAC CE,所述第一子头携带第三指示信息,所述第三指示信息用于指示所述目标MAC CE的类型,所述目标MAC CE的类型是指所述第一MAC CE,或者所述第二MAC CE,或者所述第三MAC CE。
- 根据权利要求47所述的装置,其中,所述第三指示信息为LCID,所述LCID用于指示所述目标MAC CE的类型。
- 根据权利要求47所述的装置,其中,所述第三指示信息为第一类型信息,所述第一类型信息用于指示所述目标MAC CE的类型和/或所述第一子头的类型。
- 根据权利要求47至49中任一项所述的装置,其中,所述第一子头还携带RAPID。
- 根据权利要求50所述的装置,其中,所述第一子头还携带第二类型信息,所述第二类型信息用于指示所述第一子头是包含RAPID还是包含BI信息。
- 根据权利要求47至51中任一项所述的装置,其中,所述MAC PDU还包括一个第二MAC子PDU,所述第二MAC子PDU只包括第二子头,所述第二子头携带所述第二指示信息,所述第二指示信息为BI信息。
- 根据权利要求52所述的装置,其中,所述第二子头还携带第一类型信息,所述第一类型信息用于指示所述第二子头的类型。
- 根据权利要求52所述的装置,其中,所述第二子头还携带第二类型信息,所述第二类型信息用于指示所述第二子头是包含RAPID还是包含BI信息。
- 根据权利要求47至54中任一项所述的装置,其中,所述用户设备为连接态UE的情况下,所述发送单元在所述第一消息的上行数据信道中至少传输第四MAC CE,所述第四MAC CE携带C-RNTI。
- 根据权利要求55所述的装置,其中,所述装置还包括:确定单元,用于如果所述接收单元在所述第一窗口内收到所述第二消息的调度指令,则通过所述第二消息的MAC PDU中携带的所述第三指示信息,确定所述MAC PDU中是否包含第一MAC CE和/或第三MAC CE。
- 根据权利要求56所述的装置,其中,所述装置还包括处理单元,用于:如果所述MAC PDU中包含第一MAC CE,且所述第一MAC CE中的C-RNTI与所述第一消息中的C-RNTI一致,则冲突解决;如果所述MAC PDU中包含第三MAC CE,且所述第三MAC CE中包含的RAPID或者第三MAC CE对应的第一子包头中的RAPID与所述第一消息中的前导码的索引信息一致,则从2步随机接入过程回退到4步随机接入过程;如果所述MAC PDU中未包含第一MAC CE和第三MAC CE,则在所述第一窗口结束后重传所述第一消息,其中,所述第一消息的重传采用所述第二消息中的BI值做回退。
- 根据权利要求47至54中任一项所述的装置,其中,所述用户设备为空闲态UE或非激活态UE或连接态UE的情况下,所述发送单元在所述第一消息的上行数据信道中传输CCCH SDU。
- 根据权利要求58所述的装置,其中,所述装置还包括:确定单元,用于如果所述接收单元在所述第一窗口内收到所述第二消息的调度指令,则通过所述第二消息的MAC PDU中携带的所述第三指示信息,确定所述MAC PDU中是否包含第二MAC CE和/或第三MAC CE。
- 根据权利要求59所述的装置,其中,所述装置还包括处理单元,用于:如果所述MAC PDU中包含第二MAC CE,且所述第二MAC CE中的第二冲突解决标识与所述第一消息中的CCCH SDU匹配,则冲突解决;如果所述MAC PDU中包含第三MAC CE,且所述第三MAC CE中包含的RAPID或者第三MAC CE对应的第一子包头中的RAPID与所述第一消息中的前导码的索引信息一致,则从2步随机接入过程回退到4步随机接入过程;如果所述MAC PDU中未包含第二MAC CE和第三MAC CE,则在所述第一窗口结束后重传所述第一消息,其中,所述第一消息的重传采用所述第二消息中的BI值做回退。
- 一种随机接入装置,应用于网络设备,所述装置包括:接收单元,用于接收UE发送的第一消息;发送单元,用于在第一窗口内发送第二消息的调度指令;所述第二消息包括以下至少之一:第一冲突解决标识、第二冲突解决标识、第一指示信息、第二指示信息,其中,所述第一冲突解决标识用于连接态UE的冲突解决,所述第二冲突解决标识用于空闲态UE或非激活态UE或连接态UE的冲突解决,所述第一指示信息用于指示从2步随机接入过程回退到4步随机接入过程,所述第二指示信息用于指示所述UE在重传所述第一消息时的随机回退值。
- 根据权利要求61所述的装置,其中,所述第一消息包括前导码和上行数据信道。
- 根据权利要求61或62所述的装置,其中,所述第二消息包括MAC PDU,所述MAC PDU包括以下至少之一:第一MAC CE,所述第一MAC CE携带所述第一冲突解决标识,所述第一冲突解 决标识为C-RNTI;第二MAC CE,所述第二MAC CE携带所述第二冲突解决标识;第三MAC CE,所述第三MAC CE携带随机接入响应RAR,所述RAR用于指示从2步随机接入过程回退到4步随机接入过程。
- 根据权利要求63所述的装置,其中,所述第一MAC CE还携带上行定时提前量信息。
- 根据权利要求63所述的装置,其中,所述第一MAC CE还携带上行定时提前量信息和上行调度信息。
- 根据权利要求63至65中任一项所述的装置,其中,所述第二MAC CE还携带上行定时提前量信息和C-RNTI。
- 根据权利要求63至66中任一项所述的装置,其中,所述RAR包括上行定时提前量信息、上行调度信息以及TC-RNTI。
- 根据权利要求63至66中任一项所述的装置,其中,所述RAR包括上行定时提前量信息、上行调度信息、TC-RNTI以及RAPID。
- 根据权利要求63至68中任一项所述的装置,其中,所述MAC PDU包括多个第一MAC子PDU,所述第一MAC子PDU包括第一子头和目标MAC CE,所述第一子头携带第三指示信息,所述第三指示信息用于指示所述目标MAC CE的类型,所述目标MAC CE的类型是指所述第一MAC CE,或者所述第二MAC CE,或者所述第三MAC CE。
- 根据权利要求69所述的装置,其中,所述第三指示信息为LCID,所述LCID用于指示所述目标MAC CE的类型。
- 根据权利要求69所述的装置,其中,所述第三指示信息为第一类型信息,所述第一类型信息用于指示所述目标MAC CE的类型和/或所述第一子头的类型。
- 根据权利要求69至71中任一项所述的装置,其中,所述第一子头还携带RAPID。
- 根据权利要求72所述的装置,其中,所述第一子头还携带第二类型信息,所述第二类型信息用于指示所述第一子头是包含RAPID还是包含BI信息。
- 根据权利要求69至73中任一项所述的装置,其中,所述MAC PDU还包括一个第二MAC子PDU,所述第二MAC子PDU只包括第二子头,所述第二子头携带所述第二指示信息,所述第二指示信息为BI信息。
- 根据权利要求74所述的装置,其中,所述第二子头还携带第一类型信息,所述第一类型信息用于指示所述第二子头的类型。
- 根据权利要求74所述的装置,其中,所述第二子头还携带第二类型信息,所述第二类型信息用于指示所述第二子头是包含RAPID还是包含BI信息。
- 一种用户设备,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。
- 一种网络设备,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。
- 一种芯片,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。
- 一种芯片,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。
- 一种计算机可读存储介质,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。
- 一种计算机可读存储介质,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。
- 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如权利要求1至22中任一项所述的方法。
- 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如权利要求23至38中任一项所述的方法。
- 一种计算机程序,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。
- 一种计算机程序,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。
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CN113711682A (zh) | 2021-11-26 |
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US20220394760A1 (en) | 2022-12-08 |
EP3930415B1 (en) | 2023-09-13 |
KR20210151106A (ko) | 2021-12-13 |
EP3930415A4 (en) | 2022-03-09 |
US11438936B2 (en) | 2022-09-06 |
CN114222350B (zh) | 2023-03-24 |
CN114222350A (zh) | 2022-03-22 |
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