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WO2021093431A1 - Procédé et appareil de transmission de données, procédé et appareil de réception de données pour un équipement utilisateur dans un état déconnecté, terminal et station de base - Google Patents

Procédé et appareil de transmission de données, procédé et appareil de réception de données pour un équipement utilisateur dans un état déconnecté, terminal et station de base Download PDF

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Publication number
WO2021093431A1
WO2021093431A1 PCT/CN2020/114149 CN2020114149W WO2021093431A1 WO 2021093431 A1 WO2021093431 A1 WO 2021093431A1 CN 2020114149 W CN2020114149 W CN 2020114149W WO 2021093431 A1 WO2021093431 A1 WO 2021093431A1
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WIPO (PCT)
Prior art keywords
transmitted
data
data packet
resources
configuration information
Prior art date
Application number
PCT/CN2020/114149
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English (en)
Chinese (zh)
Inventor
徐敏
Original Assignee
展讯通信（上海）有限公司
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Publication of WO2021093431A1 publication Critical patent/WO2021093431A1/fr

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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
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states

Definitions

  • the present invention relates to the field of communication technology, and in particular to methods and devices, terminals, and base stations for data transmission and reception of a non-connected UE.
  • Radio Resource Control Radio Resource Control
  • RRC Radio Resource Control
  • IDLE idle state
  • RRC inactive IACTIVE
  • CONNECTED CONNECTED
  • the UE in the RRC idle state is not connected to the base station (gNB), and only needs to periodically initiate location update, cell selection and reselection procedures, and receive paging.
  • the RRC connection state is connected to the network.
  • the network will configure the UE radio bearer (Radio Bearer, referred to as RB) and physical layer, etc., as well as dual connection (Dual Connection, referred to as DC) operations, carrier aggregation (Carrier Aggregation, referred to as CA) operations and Multi-RAT Dual Connectivity (MR-DC for short, refers to the operation of dual-connection transmission through different wireless access technologies) multi-cell operation.
  • Radio Bearer Radio Bearer
  • RB Physical layer
  • DC Dual Connection
  • CA carrier aggregation
  • MR-DC Multi-RAT Dual Connectivity
  • the DC operation can be divided into a same frequency scenario and a different frequency scenario, which are controlled by different base stations in at least two cells.
  • CA operation is controlled by a single base station in a single cell.
  • the network can perform uplink and downlink data scheduling for UEs in the RRC connected state.
  • the UE in the RRC inactive state does not need to notify the base station when moving within the RAN-based Notification Area (RNA) of a radio access network (Radio Access Network, RAN for short), and the UE retains some configurations.
  • RNA Radio Access Network
  • the UE in the RRC inactive state can retain the configuration of the Packet Data Convergence Protocol (PDCP) layer or the Service Data Adaptation Protocol (SDAP) and the original serving cell primary cell (Primary).
  • PDCP Packet Data Convergence Protocol
  • SDAP Service Data Adaptation Protocol
  • PCell Packet Data Convergence Protocol
  • SDAP Service Data Adaptation Protocol
  • SCG secondary Cell Group
  • a UE in a disconnected state needs to initiate data transmission, it usually needs to perform a random access process to migrate from the disconnected state to the connected state.
  • the state transition time is longer, which may prolong the data of the disconnected UE. Transmission delay needs to be improved.
  • the technical problem solved by the present invention is how to reduce the data transmission delay of a non-connected UE.
  • an embodiment of the present invention provides a data transmission method for a disconnected UE, which includes: receiving pre-configuration information; and using common resources to transmit data packets to be transmitted according to the pre-configuration information.
  • the pre-configuration information is used to indicate that the network allows the UE to transmit the data packet to be transmitted based on the common resource.
  • the pre-configuration information includes one or more of the following: a preset threshold for data delay; a preset threshold for network load; service information; a fallback instruction, where the fallback instruction is used to indicate that the network allows the UE
  • the common resource is used to transmit the data packet to be transmitted, and/or used to indicate the maximum number of times that the network allows the UE to transmit the data packet to be transmitted using the common resource.
  • the service information includes one or more of the following: logical channel identification; radio bearer identification; access type identification; access identification.
  • the data transmission method further includes: if the transmission of the to-be-transmitted data packet fails based on the common resource, judging whether the pre-configured resource is available; when the pre-configured resource is unavailable And when the number of times of using the common resource to transmit the data packet to be transmitted is less than the maximum number of times, continue to transmit the data packet to be transmitted based on the common resource.
  • the data transmission method further includes: when the pre-configured resource is available, using the pre-configured resource to transmit the to-be-transmitted data packet.
  • the receiving pre-configuration information includes: receiving the pre-configuration information based on an RRC connection release message and/or system information.
  • the data transmission method further includes: if cell reselection is performed from the serving cell to a preset specific cell, when the pre-configuration information in the RRC connection release message and the pre-configuration in the system information When the information is different, the system information of the preset specific cell is used as a reference; wherein, the preset specific cell refers to a cell other than the serving cell, and the UE in the preset specific cell can use The pre-configured resources.
  • the using common resources to transmit the data packet to be transmitted includes: determining whether the next pre-configured resource used to send the data packet to be transmitted meets a preset service requirement; if the preset service requirement is not met, then Transmitting the data packet to be transmitted based on the common resource.
  • the transmitting the data packet to be transmitted based on the common resource includes: if the BWP to which the pre-configured resource belongs does not have the common resource, switching to the uplink initial bandwidth or the network pre-configured bandwidth, and use The data packet to be transmitted is transmitted by the common resource of the initial uplink bandwidth or the bandwidth pre-configured by the network.
  • the data transmission method further includes: when the data packet to be transmitted is available, performing measurement or performing listening-and-speaking in an unlicensed frequency band or not transmitting in a measurement gap The data packet to be transmitted.
  • the common resources include one or more of the following: two-step RACH resources, advance data transmission resources, four-step RACH resources, and contention-based uplink transmission resources.
  • an embodiment of the present invention also provides a data receiving method for a non-connected UE, which includes: sending pre-configuration information; and receiving a data packet to be transmitted that is transmitted using a common resource.
  • the pre-configuration information is used to indicate that the network allows the UE to transmit the data packet to be transmitted based on the common resource.
  • the pre-configuration information includes one or more of the following: a preset threshold for data delay; a preset threshold for network load; service information; a fallback instruction, where the fallback instruction is used to indicate that the network allows the UE
  • the common resource is used to transmit the data packet to be transmitted, and/or used to indicate the maximum number of times that the network allows the UE to transmit the data packet to be transmitted using the common resource.
  • the service information includes one or more of the following: logical channel identification; radio bearer identification; access type identification; access identification.
  • the sending the pre-configuration information includes: sending the pre-configuration information based on the RRC connection release message and/or system information.
  • the common resources include one or more of the following: two-step RACH resources, advance data transmission resources, four-step RACH resources, and contention-based uplink transmission resources.
  • an embodiment of the present invention also provides a data transmission device for a disconnected UE, including: a receiving module for receiving pre-configuration information; a transmission module for using common resources according to the pre-configuration information Transmit the data packet to be transmitted.
  • an embodiment of the present invention also provides a data receiving device for a disconnected UE, which includes: a sending module for sending pre-configured information; a receiving module for receiving data packets to be transmitted that are transmitted using common resources .
  • an embodiment of the present invention further provides a storage medium having computer instructions stored thereon, and the computer instructions execute the steps of the above method when the computer instructions are executed.
  • an embodiment of the present invention also provides a terminal, including a memory and a processor, the memory stores computer instructions that can run on the processor, and when the processor runs the computer instructions Perform the steps of the above method.
  • an embodiment of the present invention also provides a base station, including a memory and a processor, the memory stores computer instructions that can run on the processor, and when the processor runs the computer instructions Perform the steps of the above method.
  • the embodiment of the present invention provides a data transmission method for a non-connected UE, including: receiving pre-configuration information; and using common resources to transmit data packets to be transmitted according to the pre-configuration information.
  • the embodiment of the present invention provides a non-connected UE that can use pre-configured resources for data transmission to provide a technical solution for using common resources to transmit data packets to be transmitted, so that the UE has the opportunity to use the common resources and can reduce the time caused by state transition. Delay, save the state transition time from the non-connected state to the connected state, which is beneficial to ensure the UE service transmission demand and improve the data transmission efficiency.
  • the pre-configuration information is used to indicate that the network allows the UE to transmit the data packet to be transmitted based on the common resource.
  • the pre-configuration information is issued by the base station, so that the UE in the disconnected state has the opportunity to use common resources to transmit data, and further provides more data transmission opportunities for the disconnected UE, which is beneficial to improve the data transmission efficiency.
  • the using common resources to transmit the data packet to be transmitted includes: judging whether the next pre-configured resource used to send the data packet to be transmitted meets a preset service requirement; if the preset service requirement is not met, based on all The public resource transmits the data packet to be transmitted.
  • the embodiment of the present invention allows non-connected UEs to use common resources to transmit data under the premise that the pre-configured resources do not meet the preset service requirements, thereby further saving time delay for the non-connected UEs and increasing the data transmission rate.
  • Fig. 1 is a schematic diagram of a flow of random access in the prior art
  • Fig. 2 is a schematic diagram of another random access process in the prior art
  • FIG. 3 is a schematic flowchart of another random access process in the prior art
  • FIG. 4 is a schematic flowchart of a data transmission method for a non-connected UE according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of a data receiving method for a non-connected UE according to an embodiment of the present invention
  • Figure 6 is a schematic diagram of signaling interaction in a typical scenario according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a data transmission apparatus for a non-connected UE according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a data receiving apparatus of a non-connected UE according to an embodiment of the present invention.
  • the random access process is mainly divided into Contention Based Random Access (CBRA) and Contention Free Random Access (CFRA).
  • CBRA Contention Based Random Access
  • CFRA Contention Free Random Access
  • the dedicated resource mainly refers to the time-frequency resource and code resource for initiating a random access preamble (preamble), which is indicated by the parameter ra-PreambleIndex.
  • Fig. 1 is a schematic diagram of a random access process in the prior art. This random access is CFRA.
  • the base station 2 performs operation S0, that is, sends random access preamble configuration information (Random access preamble assignment) to the user equipment 1.
  • the base station 2 may perform operation S2, that is, send a random access response to the user equipment 1.
  • Fig. 2 is a schematic flow diagram of another random access in the prior art.
  • This random access is CBRA.
  • CBRA synchronization signal block
  • SSB Synchronization Signal and physical broadcasting channel Block
  • CSI-RS Channel State Information Reference Signal
  • the user equipment 1 receives the random access response sent by the base station 2, that is, the message 2 (MSG2).
  • the user equipment 1 receives the random access response by detecting a physical downlink control channel (Physical Downlink Control Channel, referred to as PDCCH) scrambled by a random access radio network temporary identity (Random Access-Radio Network Temporary Identity, referred to as RA-RNTI).
  • PDCCH Physical Downlink Control Channel
  • RA-RNTI Random Access-Radio Network Temporary Identity
  • the random access response includes a timing advance command (Timing advance command, TA command for short) to carry time advance (Timing advance, TA) information, and also includes an uplink grant (grant) and a temporary cell radio network temporary identifier (Temporary Cell- Radio Network Temporary Identifier, referred to as TC-RNTI).
  • the uplink grant carries the scheduling information for the message 3 (MSG3) sent by the user equipment 1, and the TC-RNTI is used for the UE without the Cell-Radio Network Temporary Identifier (C-RNTI) Use to receive message 4 (Message4, MSG4 for short). Since multiple UEs may select the same RO and random access preamble to initiate a random access process, there will be conflicts, so operations S3 and S4 need to be performed to resolve the conflicts.
  • the user equipment 1 After that, the user equipment 1 performs operation S3 and sends MSG3. If the user equipment 1 has a C-RNTI, it sends a C-RNTI Medium Access Control (Medium Access Control, MAC for short) control element (Control Element, CE for short). If there is still room, other information such as a buffer state report (Buffer State Report, BSR for short) can be sent. If user equipment 1 is idle or inactive, and there is no C-RNTI, it will send RRC Common Control Channel (CCCH) messages, including RRC Setup Request (RRCSetupRequest) or RRC Recovery Request (RRCResumeRequest) and other messages , Which carries information that can be used as a UE identity (Identity) for conflict resolution.
  • CCCH RRC Common Control Channel
  • the user equipment 1 performs operation S4 to receive the conflict resolution message sent by the base station 2, that is, MSG4. If the user equipment 1 has a C-RNTI, the user equipment 1 can receive the PDCCH scrambled with the C-RNTI. At this time, the scheduled data can be received by a specific UE. If the user equipment 1 receives the information, it is considered that the conflict resolution is successful, and the random access procedure is successful. If the user equipment 1 does not receive the scheduling of the base station 2 within a certain period of time, it is considered that the conflict resolution has failed. If the user equipment 1 does not have a C-RNTI, it uses the TC-RNTI received by MSG3 to receive the PDCCH. If the received data carries a contention resolution identity (Contention Resolution Identity) MAC CE, the user equipment 1 can consider that the conflict resolution is successful.
  • a contention resolution identity Contention Resolution Identity
  • Fig. 3 is a schematic flow chart of another random access process in the prior art.
  • the user equipment 1 performs operation S1, that is, sends a message A (MSGA), where the MSGA includes the original MSG1 and MSG3.
  • MSGA includes the random access preamble sent on the PRACH and the payload (payload) sent on the Physical Uplink Shared Channel (PUSCH).
  • PUSCH Physical Uplink Shared Channel
  • the user equipment 1 performs operation S2 and receives a message B (MSGB) returned from the base station 2, that is, conflict resolution information.
  • MSGB contains MSG2 and MSG4 information. If base station 2 only receives the random access preamble sent by user equipment 1, it will send the random access response shown in Figure 2 according to the four-step random access procedure shown in Figure 2, and user equipment 1 can fall back to four. Step random access process.
  • MSGA Since a UE in an inactive or idle state needs to perform a state transition first when sending data, MSGA only contains RRC messages, and the data can be sent only after the random access process is completed.
  • the prior art proposes two small packet transmission mechanisms. The first is that in addition to sending RRC messages in MSG3 or MSGA, data can also be carried for early data transmission (Early Data Transmission, EDT for short). In addition, if the TA is valid, the random access preamble may not be sent.
  • the second is that the network configures a pre-configured uplink resource (PUR) or configured grant (CG) for the UE.
  • PUR pre-configured uplink resource
  • CG and PUR can be considered as a kind of dedicated pre-configured resources for When sending uplink data, the resource is periodic and includes time domain, frequency domain, and code domain resource information.
  • a UE that uses PUR resources or CG resources to send has a valid TA, and can directly send data without sending a random access preamble. Compared with the four-step process, the two steps MSG1 and MSG2 are reduced.
  • the small packet transmission in the prior art is mainly based on network configuration. For example, when the amount of data that the UE needs to send is less than a preset threshold, or considering the delay requirements and service cycles of certain services, the network will configure the UE to use the small packet transmission mode.
  • the non-connected random access process defines the order of selecting different transmission methods: first select uplink or supplementary uplink (Uplink/Supplementary Uplink, referred to as UL/SUL), and this selection corresponds to a reference signal received power (Reference Signal Received Power, referred to as RSRP) threshold; then choose a two-step or four-step (2-step/4-step) random access procedure, and this choice corresponds to another RSRP threshold. If the two-step random access process is selected, the random access process type (type) selection can be performed again after N retries, where N is a positive integer.
  • RSRP Reference Signal Received Power
  • the selection order can be based on the network configuration of small packet transmission, preferably pre-configured resources, and then select public based on the existing scheme Resources, that is, select UL/SUL, and then decide to select a two-step or four-step random access process.
  • the UE needs to perform inter-frequency measurement at certain times. Under normal circumstances, the inter-frequency measurement can be triggered according to the configured measurement gap (measurement gap) or the current cell quality is less than a certain threshold. At this time, the UE cannot perform data transmission in the current cell, or the measurement timing (network configuration During this period of time, the network considers that the UE is measuring and does not receive data sent from the UE, but the UE may not measure at this time), and the network will not receive the data sent by the UE. In addition, when the UE accesses the unlicensed spectrum, it needs to perform a Listen Before Talk (LBT) process to determine the transmission timing. The UE cannot perform data transmission before the LBT determines the transmission timing.
  • LBT Listen Before Talk
  • a data transmission collision If a data transmission collision occurs, it needs to wait for the next transmission. Timing, this will cause a certain delay, and it may be difficult to meet the UE's service transmission requirements.
  • the embodiment of the present invention provides a data transmission method for a non-connected UE, including: receiving pre-configuration information; and using common resources to transmit data packets to be transmitted according to the pre-configuration information.
  • the embodiment of the present invention provides a non-connected UE that can use pre-configured resources for data transmission to provide a technical solution for using common resources to transmit data packets to be transmitted, so that the UE has the opportunity to use the common resources and can reduce the time caused by state transition. Delay, save the state transition time from the non-connected state to the connected state, which is beneficial to ensure the UE service transmission demand and improve the data transmission efficiency.
  • the technical solutions provided by the embodiments of the present invention are also applicable to different network architectures, including but not limited to a relay network architecture, a dual-link network architecture, and a vehicle networking communication architecture.
  • the base station (Base Station, BS for short) in the embodiment of the present invention may also be referred to as base station equipment, and is a device deployed on a wireless access network to provide wireless communication functions.
  • equipment that provides base station functions in a 2G network includes a base transceiver station (Base Transceiver Station, BTS for short) and a Base Station Controller (Base Station Controller, BSC for short).
  • the equipment that provides the base station function in the 3G network includes a NodeB (NodeB) and a Radio Network Controller (Radio Network Controller, RNC for short).
  • the equipment that provides the base station function in the 4G network includes an evolved NodeB (evolved NodeB, eNB for short).
  • a device that provides a base station function is an access point (Access Point, AP for short).
  • the equipment that provides base station functions in 5G New Radio (NR) includes continuously evolving Node B (gNB), and the base station also refers to equipment that provides base station functions in a new communication system in the future.
  • the terminal in the embodiment of the present invention may refer to various forms of user equipment (User Equipment, UE for short), access terminal, user unit, user station, mobile station, mobile station ( Mobile Station, MS for short), remote station, remote terminal, mobile equipment, user terminal, terminal equipment (terminal equipment), wireless communication equipment, user agent or user device.
  • user equipment User Equipment, UE for short
  • access terminal user unit
  • user station mobile station
  • mobile station Mobile Station, MS for short
  • remote station remote terminal
  • mobile equipment user terminal
  • terminal equipment terminal equipment
  • terminal equipment terminal equipment
  • terminal equipment wireless communication equipment
  • the terminal device can also 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), Handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network, or future evolution of the public land mobile network (Public Land Mobile Network, referred to as The terminal equipment in the PLMN) is not limited in the embodiment of the present invention.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the “plurality” in the embodiments of the present invention refers to two or more than two.
  • connection appearing in the embodiment of the present invention refers to various connection modes such as direct connection or indirect connection to realize communication between devices, which is not limited in the embodiment of the present invention.
  • the "network” and "system” appearing in the embodiments of the present invention express the same concept, and the communication system is the communication network.
  • the multi-cell operation in the embodiment of the present invention includes but is not limited to DC operation, CA operation, and MR-DC operation.
  • each block in the flowchart or block diagram may represent a module, program segment, or part of code, and the module, program segment, or part of code may include one or more for implementing the provisions in the various embodiments.
  • Executable instructions for logical functions may also occur in a different order from the order marked in the drawings.
  • each block in the flowchart and/or block diagram, and the combination of the blocks in the flowchart and/or block diagram can be implemented using a dedicated hardware-based system that performs the specified functions or operations. Or it can be implemented using a combination of dedicated hardware and computer instructions. It should also be noted that the sequence number of each step in the flowchart does not represent a limitation on the execution order of each step.
  • FIG. 4 is a schematic flowchart of a data transmission method for a non-connected UE according to an embodiment of the present invention.
  • the data transmission method may be executed by the UE side, for example, executed by a non-connected NR UE.
  • the data transmission method may include the following steps:
  • Step S401 receiving pre-configuration information
  • Step S402 according to the pre-configuration information, use common resources to transmit the data packet to be transmitted.
  • the base station may send pre-configuration information to the UE, so that the non-connected UE that can use the pre-configured resources can fall back to using common resources or based on RACH contention resources for data transmission.
  • the pre-configured resources include, but are not limited to, dedicated resources such as PUR and CG, or can be allocated to different public resources by the UE based on ID or other forms to make them non-competitive resources, or can be dedicated resources allocated for EDT.
  • the UE may receive the pre-configuration information from the base station.
  • the pre-configuration information may be used to indicate that the network allows the UE to transmit the data packet to be transmitted based on the common resource.
  • the common resources refer to uplink transmission resources that can be used by multiple UEs, and may be uplink transmission resources selected by different UEs using the same rule.
  • the common resources may include, but are not limited to, one or more of the following: two-step RACH resources, advance data transmission resources, four-step RACH resources, and contention-based uplink transmission resources, where the advance data transmission resources use contention-based resources.
  • the base station may send the pre-configuration information based on the RRC connection release message and/or system information.
  • the UE may receive the pre-configuration information based on the RRC connection release message and/or system information.
  • the pre-configuration information may include one or more of the following: a preset threshold for data delay; a preset threshold for network load; service information; a fallback instruction.
  • the pre-configuration information may also include the pre-configured bandwidth of the network.
  • the UE may switch to the bandwidth pre-configured by the network when the BWP to which the pre-configured resource issued by the network belongs does not have the common resource, and The data packet to be transmitted is transmitted using a common resource of a bandwidth pre-configured by the network.
  • the fallback indication is used to indicate that the network allows the UE to use the common resource to transmit the data packet to be transmitted, and/or, is used to indicate that the network allows the UE to use the common resource to transmit the to-be-transmitted data packet The maximum number of data packets.
  • the fallback indication occupies 1 bit, which is used to indicate whether the network allows the UE to use the common resource to transmit the data packet to be transmitted, or whether the network allows the UE to use the common resource to transmit the data to be transmitted Packet once.
  • the backoff indication occupies multiple bits, and the multiple bits are used to indicate that the network allows the UE to use the common resource to transmit the data packet to be transmitted, and use different bit values to indicate that the network allows the UE to use the common resource The maximum number of times the data packet to be transmitted is transmitted.
  • the preset data delay threshold refers to the preset delay threshold to be allowed to fall back.
  • the UE is allowed to use public resources to transmit the Data packets to be transmitted. Otherwise, when the delay requirement of the data to be transmitted is greater than the threshold, the UE may wait until the next pre-configured resource comes, and then transmit the data packet to be transmitted. Or when the delay requirement of the data to be transmitted is less than or equal to the threshold and the next pre-configured resource cannot meet the service requirements of the data to be transmitted, the UE is allowed to use common resources to transmit the data to be transmitted.
  • the preset network load threshold refers to the load threshold preset by the network.
  • the UE When a UE has a data transmission collision and needs to send data to be transmitted, the UE according to the current network load situation, for example, the network will broadcast a The current cell load value, or the UE can obtain the value from other methods, and when the value is less than or equal to the network load preset threshold, the UE is allowed to use public resources to send the data packet to be transmitted. Otherwise, the UE may wait until the next pre-configured resource comes before transmitting the data packet to be transmitted. Or if the current network load condition is lower than the network load preset threshold, and the next pre-configured resource cannot meet the service requirements of the data to be transmitted, the UE is allowed to use common resources to transmit the data to be transmitted.
  • the service information may include one or more of the following: logical channel identification; radio bearer (radio bearer, RB for short) identification; access category identification; access identification.
  • the RB may include a data radio bearer (Data RB, DRB) and a signaling radio bearer (Signaling RB, SRB).
  • the access category may include, but is not limited to, a category value used for access control, or a reason value for access, and the like.
  • the pre-configuration information includes a logical channel identifier, it may be one or more logical channel identifiers, or a list of logical channel identifiers, and the logical channel identifier associated with the data packet to be transmitted belongs to the logical channel identifier.
  • the UE is allowed to use common resources to send the data packet to be transmitted. Otherwise, the UE may wait until the next pre-configured resource comes before transmitting the data packet to be transmitted.
  • the logical channel identifier of the data packet to be transmitted belongs to the logical channel list, then the UE may use common resources to send the data to be transmitted when the next pre-configured resource cannot meet the service requirements of the data to be transmitted package.
  • the pre-configuration information includes an RB identifier
  • it may be one or more RB identifiers, or a list of RB identifiers
  • the RB identifier associated with the data packet to be transmitted belongs to the configuration information.
  • the RB identification allows the UE to use common resources to send the data packet to be transmitted. Otherwise, the UE may wait until the next pre-configured resource comes before transmitting the data packet to be transmitted. Or the RB identifier associated with the data packet to be transmitted belongs to the RB identifier in the configuration information, then the UE may use common resources to send the data when the next pre-configured resource cannot meet the service requirements of the data to be transmitted Data packets to be transmitted.
  • the pre-configuration information includes an access type identifier, which may be one or more access type identifiers, or a list of access type identifiers, and the access type identifier corresponding to the data packet to be transmitted
  • an access type identifier which may be one or more access type identifiers, or a list of access type identifiers
  • the access type identifier corresponding to the data packet to be transmitted If the incoming type identifier belongs to the access type identifier in the configuration information, the UE is allowed to use public resources to send the data packet to be transmitted. Otherwise, the UE may wait until the next pre-configured resource comes before transmitting the data packet to be transmitted. Or the access type identifier corresponding to the data packet to be transmitted belongs to the access type identifier in the configuration information, the UE may use when the next pre-configured resource cannot meet the service requirements of the data packet to be transmitted The public resource sends the data packet to be transmitted.
  • an access type identifier which may be one or more access type identifier
  • the access identifier may be used to indicate the access class (access class) or user level information of the UE. If the pre-configuration information includes the access identifier, there may be one or more of them. Access identifiers, or a list of access identifiers, and the access identifier corresponding to the data packet to be transmitted belongs to the access identifier in the configuration information, the UE is allowed to use public resources to send the data packet to be transmitted . Otherwise, the UE may wait until the next pre-configured resource comes before transmitting the data packet to be transmitted.
  • the UE may use common resources when the next pre-configured resource cannot meet the service requirements of the data packet to be transmitted Sending the data packet to be transmitted.
  • the UE when the UE is in a non-connected state and the UE has the data packet to be transmitted, the UE just meets the measurement condition, and the UE will not transmit the data packet to be transmitted, but will perform measurement. Or, the UE is deployed in an unlicensed frequency band, and when the UE is in an unconnected state and the UE has the data packet to be transmitted, the UE needs to perform a listen-before-speak operation in the unlicensed frequency band without transmitting the data packet to be transmitted. Or, when the UE is in a disconnected state and the UE has the data packet to be transmitted, the UE will not transmit the data packet to be transmitted just during the measurement gap.
  • the UE After completing the measurement or LBT or measurement gap, if the UE has learned from the received pre-configuration information that the UE can use common resources to transmit the data packet to be transmitted, the UE can first determine the next data packet to be transmitted. Whether the pre-configured resource meets the preset service requirement, if the judgment result shows that the preset service requirement is not met, the UE may try to transmit the data packet to be transmitted based on the common resource. Otherwise, if the judgment result indicates that the preset service requirements are met, the UE may give up using public resources for transmission, and use the pre-configured resources to transmit the data packet to be transmitted.
  • the UE needs to wait after the UE fails to transmit the data packet to be transmitted based on the common resource The next pre-configured resource to transmit the data packet to be transmitted.
  • the UE is transmitting the waiting time based on the common resource. After the transmission of the data packet fails, the UE can determine whether the pre-configured resource is available. When the pre-configured resource is unavailable and the number of times that the common resource is used to transmit the data packet to be transmitted is less than N, the UE may continue to transmit the data packet to be transmitted based on the common resource.
  • the UE may use the pre-configured resource to transmit the data packet to be transmitted.
  • whether the pre-configured resource is available refers to judging whether the use of the pre-configured resource meets the service requirements of the data packet to be transmitted.
  • the UE performs fallback after a data transmission collision occurs according to the fallback instruction, and uses the common resource to transmit the data packet to be transmitted using the common resource.
  • the pre-configuration information includes the following multiple items: data delay preset threshold; network load preset threshold; service information; fallback instruction, then the UE makes a judgment based on these conditions, and when all of these information are met, it can be used
  • the public resource uses the public resource to transmit the data packet to be transmitted.
  • the selected sending resource satisfies the service requirements of the data packet to be transmitted, including requirements such as delay requirements, data volume, and so on.
  • the public resources that the UE is required to select need to meet the service requirements of sending resources to meet the data packets to be transmitted.
  • the UE may switch to the uplink initial bandwidth or the network pre-configured bandwidth, and use the uplink initial bandwidth.
  • the to-be-transmitted data packet is transmitted by a common resource of a bandwidth or a bandwidth pre-configured by the network.
  • the uplink initial bandwidth refers to the bandwidth used when the UE initially accesses the network, and the network pre-configured bandwidth is the bandwidth specified by the network in the pre-configuration information. Further, in some cases, the pre-configured resources may be available in one or more cells.
  • the UE performs cell reselection from the serving cell to another cell, the pre-configuration information in the RRC connection release message received by the UE in the serving cell and the system information received in the other cell (System Information, for short)
  • System Information for short
  • the UE can use the system information of the other cell as a reference.
  • data is transmitted based on the pre-configured information in the system information.
  • the other cell refers to a cell other than the serving cell, and UEs in the other cell can use the pre-configured resource.
  • the pre-configuration information in the RRC connection release message received in the serving cell contains valid information, for example, the valid information is a cell list, and if other reselected cells are included in the list, the pre-configuration information can still be used Perform data transfer back and send.
  • the pre-configured resources are valid in the serving cell A and cell B where the UE is located.
  • the pre-configured resources of the serving cell A and the cell B are the same resource.
  • the UE undergoes cell reselection from the serving cell A to the cell B, if the UE receives the pre-configuration information in the serving cell A and the UE receives the pre-configuration information in the SIB in the cell B If the configuration information conflicts, the UE can use the SIB of cell B as the standard.
  • the public resource may include but It is not limited to two-step RACH resources, four-step RACH resources, EDT resources, and competition-based resources.
  • FIG. 5 is a schematic flowchart of a data receiving method for a non-connected UE according to an embodiment of the present invention.
  • the data receiving method may be executed by the network side, for example, executed by NR gNB.
  • the data receiving method may include the following steps:
  • Step S501 sending pre-configuration information
  • Step S502 Receive a data packet to be transmitted that is transmitted using a common resource.
  • the base station may send pre-configuration information to the UE.
  • the pre-configuration information may be used to indicate that the network allows the UE to transmit the data packet to be transmitted based on the common resource.
  • the pre-configuration information may include one or more of the following: a preset threshold for data delay; a preset threshold for network load; service information; a fallback instruction, where the fallback instruction is used to indicate The network allows the UE to use the common resource to transmit the data packet to be transmitted, and/or is used to indicate the maximum number of times that the network allows the UE to use the common resource to transmit the data packet to be transmitted.
  • the service information may include one or more of the following: logical channel identification; radio bearer identification; access type identification; access identification.
  • the base station may send the pre-configuration information based on the RRC connection release message and/or system information.
  • the base station may receive the to-be-transmitted data packet uploaded by the UE using public resources.
  • the common resources may include one or more of the following: two-step RACH resources, advance data transmission resources, four-step RACH resources, and contention-based uplink transmission resources.
  • step S501 and step S502 can be regarded as execution steps corresponding to step S401 to step S402 in the embodiment shown in FIG. 4, and the two are complementary to each other in terms of specific implementation principles and logic. . Therefore, for the data receiving method on the network side, reference may be made to the related description of the embodiment shown in FIG. 4, which will not be repeated here.
  • a non-connected UE for example, an inactive UE
  • a non-connected UE for example, an inactive UE
  • the UE may perform the measurement first.
  • a non-connected UE for example, an inactive UE
  • the UE may perform the LBT operation first.
  • the UE can fall back to the RACH/EDT process and perform the two-step RACH process, the four-step RACH process or the EDT to send the Data packets to be transmitted.
  • Fig. 6 is a schematic diagram of signaling interaction in a typical scenario according to an embodiment of the present invention.
  • the user equipment 1 is located in a serving cell to which the base station 2 belongs.
  • the base station 2 configures pre-configured resources for the user equipment 1 in advance to prepare the user equipment 1 to send data when the user equipment 1 is in a disconnected state (not shown in the figure).
  • the base station 2 can perform operation S1, that is, the base station 2 sends the pre-configuration information to the user equipment 1.
  • the pre-configuration information may carry relevant information that allows the UE to fall back to RACH/EDT through the RRC connection release message and/or system information, so as to perform the fallback condition configuration.
  • the pre-configuration information is used to indicate that the network allows the UE to transmit the data packet to be transmitted based on the common resource.
  • the pre-configuration information may include one or more of the following: a data delay threshold; a preset threshold for network load; service information; a fallback indication, where the fallback indication is used to indicate that the network allows the UE to use the public resource for transmission.
  • the data packet to be transmitted and/or, is used to indicate the maximum number of times that the network allows the UE to use the common resource to transmit the data packet to be transmitted.
  • the service information may include one or more of the following: logical channel identification; radio bearer identification; access type identification; access identification.
  • the base station 2 allows certain to-be-transmitted data of the non-connected user equipment 1 to be transmitted using pre-configured resources or common resources.
  • the user equipment 1 enters a non-connected state.
  • operation S2 needs to be performed, that is, the user equipment 1 performs measurement, or performs an LBT operation, or just in the measurement gap, does not perform data transmission.
  • the user equipment 1 performs operation S3, that is, the user equipment 1 determines whether the next pre-configured resource can meet the service requirements of the data packet to be transmitted.
  • the user equipment 1 After that, the judgment result of the user equipment 1 indicates that the next pre-configured resource cannot meet the service requirements of the data packet to be transmitted, and satisfies the conditions given by the pre-configured information, the user equipment 1 performs operation S4, that is, adopts public The resource sends the data packet to be transmitted.
  • the public resources may include, but are not limited to, two-step RACH resources, four-step RACH resources, EDT resources, and competition-based resources.
  • the pre-configuration information may include a back-off indication, and the back-off indication may indicate the maximum number of times that the network allows the UE to use the common resource to transmit the data packet to be transmitted, and/or indicates the The network allows the UE to use the common resource to transmit the data packet to be transmitted. If the backoff indication indicates that the maximum number of times that the network allows the UE to use the common resource to transmit the data packet to be transmitted is 1, the user equipment 1 may perform operation S51 after the transmission fails using the common resource. , That is, waiting for the next pre-configured resource, and transmitting the data packet to be transmitted based on the next pre-configured resource.
  • the user equipment 1 may The transmission using the common resource fails, but the maximum number of times is not reached, and operation S52 is performed before the sending timing of the next pre-configured resource, that is, the data packet to be transmitted is continued to be retransmitted based on the common resource.
  • the embodiments of the present invention do not wait for the next opportunity to pre-configure resources (or dedicated resources), but instead fall back to the scheme of sending data packets to be transmitted using public resources, thereby ensuring UE service transmission requirements and reducing The time delay caused by the state transition improves the data transmission efficiency.
  • FIG. 7 is a schematic structural diagram of a data transmission apparatus of a non-connected UE according to an embodiment of the present invention.
  • the data transmission device 7 may implement the method and technical solutions shown in FIG. 4 and FIG. 6 and be executed by the UE.
  • the data transmission device 7 may include: a receiving module 71, configured to receive pre-configuration information; and a transmission module 72, configured to use common resources to transmit data packets to be transmitted according to the pre-configuration information.
  • FIG. 8 is a schematic structural diagram of a data receiving apparatus of a non-connected UE according to an embodiment of the present invention.
  • the data receiving device 8 can implement the method and technical solutions shown in FIG. 5 and FIG. 6, and is executed by the network side device.
  • the data receiving device 8 may include: a sending module 81, configured to send pre-configuration information; and a receiving module 82, configured to receive data packets to be transmitted that are transmitted using common resources.
  • an embodiment of the present invention also discloses a storage medium on which computer instructions are stored, and when the computer instructions are run, the method and technical solution described in the embodiment shown in FIG. 4 or in the embodiment shown in FIG. 6 are executed.
  • the storage medium may include a computer-readable storage medium such as a non-volatile memory or a non-transitory memory.
  • the computer-readable storage medium may include ROM, RAM, magnetic disk or optical disk, and so on.
  • the processor may be a central processing unit (Central Processing Unit, CPU for short), and the processor may also be other general-purpose processors or digital signal processors (DSP for short). , Application Specific Integrated Circuit (ASIC for short), Field Programmable Gate Array (FPGA for short) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory in the embodiment of the present invention 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 a read-only memory (Read-Only Memory, ROM for short), a programmable read-only memory (Programmable ROM, PROM for short), and an erasable programmable read-only memory (Erasable PROM, EPROM for short). , Electrically Erasable Programmable Read-Only Memory (Electrically EPROM, EEPROM for short) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM for short), which is used as an external cache.
  • Random Access Memory Random Access Memory
  • static random access memory SRAM for short
  • dynamic random access memory DRAM for short
  • Synchronous DRAM SDRAM for short
  • Double Data Rate SDRAM DDR SDRAM for short
  • Enhanced Synchronous Dynamic Random Access Memory ESDRAM for short
  • Synchronous connection to DRAM SLDRAM for short
  • Direct Rambus RAM DR-RAM for short
  • the foregoing embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination.
  • the above-mentioned embodiments may be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions or computer programs.
  • the computer instructions or computer programs are loaded or executed on the computer, the processes or functions according to the embodiments of the present invention are generated in whole or in part.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more sets of available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium.
  • the semiconductor medium may be a solid state drive.
  • an embodiment of the present invention also discloses a terminal, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes the above diagram when the computer instructions are executed. 4 and the technical solution of the method described in the embodiment shown in FIG. 6.
  • the terminal may be an NR UE.
  • an embodiment of the present invention also discloses a base station, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes the above diagram when the computer instructions are executed. 5 and the technical solution of the method described in the embodiment shown in FIG. 6.
  • the base station may be an NR base station.

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Abstract

La présente invention porte sur un procédé et sur un appareil de transmission de données, sur un procédé et sur un appareil de réception de données pour un équipement utilisateur (UE pour User Equipment) dans un état déconnecté, sur un terminal, ainsi que sur une station de base. Le procédé de transmission de données consiste : à recevoir des informations de préconfiguration ; et selon les informations de préconfiguration, à utiliser une ressource publique pour transmettre un paquet de données à transmettre. Le problème technique fourni par la présente invention peut réduire le retard de transmission de données de l'équipement utilisateur à l'état déconnecté.
PCT/CN2020/114149 2019-11-15 2020-09-09 Procédé et appareil de transmission de données, procédé et appareil de réception de données pour un équipement utilisateur dans un état déconnecté, terminal et station de base WO2021093431A1 (fr)

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