WO2022156439A1 - Procédé et dispositif de transmission d'informations, station de base et support - Google Patents

Procédé et dispositif de transmission d'informations, station de base et support Download PDF

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Publication number
WO2022156439A1
WO2022156439A1 PCT/CN2021/138555 CN2021138555W WO2022156439A1 WO 2022156439 A1 WO2022156439 A1 WO 2022156439A1 CN 2021138555 W CN2021138555 W CN 2021138555W WO 2022156439 A1 WO2022156439 A1 WO 2022156439A1
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WIPO (PCT)
Prior art keywords
base station
terminal
data
message
request message
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PCT/CN2021/138555
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English (en)
Chinese (zh)
Inventor
孙建成
傅婧
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大唐移动通信设备有限公司
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Publication of WO2022156439A1 publication Critical patent/WO2022156439A1/fr

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • 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 first base station receives a first response message sent by the second base station, where the first response message includes context information of the first terminal, or includes context information of the first terminal and an anchor point indication the second indication information held;
  • the third indication information is used to indicate whether there is subsequent uplink small data to be transmitted
  • the first indication information is obtained based on the cause value in the connection restoration request message, or the first indication information is obtained by the first base station based on the uplink data.
  • the first base station when the first base station includes a distribution unit and a centralized unit;
  • the first signaling transmission message is an initial uplink radio resource control message transmission message.
  • the first base station sends the uplink data to the second base station, including:
  • the second notification message includes a forwarding tunnel allocated by the first base station to at least one data radio bearer used for downlink small data transmission of the first terminal.
  • the method also includes:
  • the second forwarding tunnel is a forwarding tunnel corresponding to a data radio bearer that transmits the downlink data
  • the second base station After completing the small data transmission, receive a second message sent by the second base station, where the second message carries a radio resource control release message, and the radio resource control release message is generated by the second base station;
  • the second message is a terminal context release command message.
  • the second base station receives a first request message sent by the first base station, where the first request message is used to request to acquire context information of a first terminal, and the first terminal sends a connection recovery request message to the first base station and uplink data, and the terminal in the inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is small uplink data to be transmitted, and the second base station is based on the first base station.
  • the anchor base station determined by the connection recovery request message;
  • the second base station sends a first response message to the first base station, where the first response message includes the context information of the first terminal, or includes the context information of the first terminal and a message used to instruct the anchor point to remain the second indication information;
  • the second base station receives the uplink data sent by the first base station.
  • the first request message further includes: auxiliary information, and the auxiliary information includes at least one of the following information:
  • the third indication information is used to indicate whether there is subsequent uplink small data to be transmitted
  • the fourth indication information is used to indicate whether there is expected downlink small data to be transmitted.
  • the first indication information is obtained based on the cause value in the connection restoration request message, or the first indication information is obtained by the first base station based on the uplink data.
  • the method further includes:
  • the second base station receives the uplink data sent by the first base station, including:
  • the uplink data sent by the first base station is received through a first forwarding tunnel, where the first forwarding tunnel is a forwarding tunnel corresponding to a data radio bearer that transmits the uplink data.
  • the method also includes:
  • the method also includes:
  • the downlink data is sent to the first base station through a second forwarding tunnel, where the second forwarding tunnel is a forwarding tunnel corresponding to a data radio bearer that transmits the downlink data .
  • the method also includes:
  • the second message is a terminal context release command message.
  • an embodiment of the present disclosure further provides a base station, where the base station is a first base station, and includes: a memory, a transceiver, and a processor: a memory for storing a computer program; a transceiver for processing the Send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations:
  • Send a first request message to the second base station through the transceiver where the first request message is used to request to acquire context information of a first terminal, and the first terminal sends a connection recovery request message to the first base station and uplink data, and the terminal in the inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is small uplink data to be transmitted, and the second base station is based on the first base station. the anchor base station determined by the connection recovery request message;
  • an embodiment of the present disclosure further provides an information transmission apparatus, which is applied to the first base station and includes:
  • a first sending unit configured to send a first request message to a second base station, where the first request message is used to request to acquire context information of a first terminal, where the first terminal sends a connection to the first base station Recovery request message and uplink data, and the terminal in the inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is uplink small data to be transmitted, and the second base station is the second base station.
  • An anchor base station determined by the base station based on the connection recovery request message;
  • a first receiving unit configured to receive a first response message sent by the second base station, where the first response message includes context information of the first terminal, or includes context information of the first terminal and an indication of the second indication information held by the anchor point;
  • a second sending unit configured to send the uplink data to the second base station.
  • an embodiment of the present disclosure further provides a base station, where the base station is a second base station, including: a memory, a transceiver, a processor: a memory, used for storing a computer program; Send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations:
  • the transceiver receives a first request message sent by a first base station, where the first request message is used to request to acquire context information of a first terminal for sending a connection to the first base station Recovery request message and uplink data, and the terminal in the inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is uplink small data to be transmitted, and the second base station is the second base station.
  • An anchor base station determined by the base station based on the connection recovery request message;
  • the first base station sends a first response message to the first base station, where the first response message includes context information of the first terminal, or includes context information of the first terminal and second indication information for indicating anchor point retention ;
  • an embodiment of the present disclosure further provides an information transmission apparatus, which is applied to a second base station and includes:
  • a fifth receiving unit configured to receive a first request message sent by a first base station, where the first request message is used to request to acquire context information of a first terminal, and the first terminal is to send a message to the first base station Connection recovery request message and uplink data, and the terminal in the inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is small uplink data to be transmitted, and the second base station is the the anchor base station determined by the first base station based on the connection recovery request message;
  • a sixth sending unit configured to send a first response message to the first base station, where the first response message includes context information of the first terminal, or includes context information of the first terminal and an anchor for indicating point to hold the second indication information;
  • a sixth receiving unit configured to receive the uplink data sent by the first base station.
  • an embodiment of the present disclosure further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the above-mentioned information The steps of the transfer method.
  • the first request message is sent to the second base station through the first base station, where the first request message is used to request to acquire the context information of the first terminal, and the first terminal is to send the request message to the second base station.
  • the first base station sends a connection recovery request message and uplink data, and the terminal is in an inactive state, the first request message includes first indication information, and the first indication information is used to indicate that there is uplink small data to be transmitted, the
  • the second base station is the anchor base station determined by the first base station based on the connection recovery request message; the first base station receives a first response message sent by the second base station, where the first response message includes the first response message.
  • the context information of a terminal or the context information of the first terminal and the second indication information used to instruct the anchor point to remain; the first base station sends the uplink data to the second base station, in this way, in the When the terminal in the inactive state transmits small data, the anchor base station instructs the anchor point to remain through the indication information, that is, the anchor point does not transfer, so that the terminal does not need to restore the connection state, and the terminal can realize the transmission of small data in the inactive state, thus
  • the data transmission process is simplified and the transmission efficiency is improved, especially when the terminal moves to other base stations or other centralized units CU, to avoid resource waste caused by signaling overhead.
  • FIG. 1 is one of the schematic flowcharts of the information transmission method according to an embodiment of the present disclosure
  • FIG. 2 is a second schematic flowchart of an information transmission method according to an embodiment of the present disclosure
  • FIG. 3 is a third schematic flowchart of an information transmission method according to an embodiment of the present disclosure.
  • FIG. 4 is a fourth schematic flowchart of an information transmission method according to an embodiment of the present disclosure.
  • FIG. 5 is one of structural block diagrams of a base station according to an embodiment of the present disclosure.
  • FIG. 6 is one of the schematic diagrams of the modules of the information transmission apparatus according to the embodiment of the disclosure.
  • FIG. 7 is the second structural block diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 8 is a second block diagram of an information transmission apparatus according to an embodiment of the present disclosure.
  • the term "and/or" describes the association relationship of associated objects, and indicates that there can be three kinds of relationships. For example, A and/or B can indicate that A exists alone, A and B exist at the same time, and B exists alone these three situations.
  • the character “/” generally indicates that the associated objects are an "or" relationship.
  • the term “plurality” refers to two or more than two, and other quantifiers are similar.
  • the embodiments of the present application provide an information transmission method, device, base station, and medium, to solve the problem of how the base station side handles the transmission of the uplink small data when the terminal in the RRC_inactive state transmits small data in the related art, so that the terminal does not need to The problem of entering the connection state.
  • the method and the device are conceived based on the same application. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and repeated descriptions will not be repeated here.
  • FIG. 1 it is a schematic flowchart of an information transmission method provided by an embodiment of the present disclosure, and the method is applied to the first base station, including:
  • Step 101 The first base station sends a first request message to the second base station, wherein the first request message is used to request to obtain context information of a first terminal, and the first terminal sends a connection recovery to the first base station request message and uplink data, and the terminal in the inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is small uplink data to be transmitted, and the second base station is the first An anchor base station determined by the base station based on the connection recovery request message;
  • both the first base station and the second base station may include CUs and DUs based on a centralized unit (Centralized Unit, CU)-distributed unit (Distributed Unit, DU) separation architecture, and may also be base stations under a non-separated architecture.
  • CU Centralized Unit
  • DU Distributed Unit
  • the first base station receives the connection restoration request message and uplink data sent by the first terminal.
  • the first terminal is a terminal in an inactive state. That is, the scenario corresponding to the implementation of the method is data transmission between the terminals in an inactive state and across base stations.
  • the first base station is a serving base station
  • the second base station is an anchor base station
  • the first base station after receiving the connection resumption request message sent by the first terminal, the first base station, according to the user equipment (User Equipment, UE) identity (Identity Document, ID identifier) in the connection resumption request message, such as an inactive network Temporary identifier (Inactive radio Network Temporary Identifier, I-RNTI), find the anchor base station.
  • the user equipment User Equipment, UE
  • identity Identity Document, ID identifier
  • I-RNTI Inactive radio Network Temporary Identifier
  • the first indication information is used to indicate that there is uplink small data to be transmitted, it means that the first base station learns that the uplink data sent by the first terminal is uplink small data.
  • small data can be understood as the data volume of the data to be transmitted is less than the preset data volume, for example, the size of the data packet is small and/or the number of the data packet is small.
  • Step 102 The first base station receives a first response message sent by the second base station, where the first response message includes the context information of the first terminal, or includes the context information of the first terminal and a second indication information indicating that the anchor point is maintained;
  • the anchor point remains can be understood as the anchor point remains unchanged or the anchor point is not transferred. It should be noted that the second base station, that is, the anchor base station can decide whether to keep the anchor point unchanged.
  • the second indication information may be determined by the first indication information, or may be determined jointly by the first indication information and other auxiliary information, or may be determined independently of the first indication information and other auxiliary information, which is not specifically limited here. .
  • Step 103 The first base station sends the uplink data to the second base station.
  • the second base station since in the previous step, the second base station instructs the anchor point to remain, the base station and the first terminal do not need to perform additional signaling interaction for restoring the connection state of the first terminal, thereby avoiding signaling overhead. Waste of resources, the first base station directly sends the uplink data to the second base station, and then the second base station transmits the uplink data to the core network side.
  • a first request message is sent to a second base station through a first base station, where the first request message is used to request to acquire context information of a first terminal, and the first terminal is to send a request to the second base station.
  • the first base station sends a connection recovery request message and uplink data, and the terminal is in an inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is uplink small data to be transmitted, the first
  • the second base station is the anchor base station determined by the first base station based on the connection recovery request message; the first base station receives a first response message sent by the second base station, where the first response message includes the first response message.
  • the anchor base station instructs the anchor point to remain through the indication information, that is, the anchor point does not transfer, so that the terminal does not need to restore the connection state, and the terminal can realize the transmission of small data in the inactive state, thus simplifying
  • the data transmission process improves the transmission efficiency, especially when the terminal moves to other base stations or other centralized units CU, to avoid resource waste caused by signaling overhead.
  • the first request message further includes: auxiliary information, where the auxiliary information includes at least one of the following information:
  • the third indication information is used to indicate whether there is subsequent uplink small data to be transmitted
  • the fourth indication information is used to indicate whether there is expected downlink small data to be transmitted.
  • the first request message includes first indication information, or the first request message includes first indication information and auxiliary information.
  • the auxiliary information includes but is not limited to the above-mentioned third indication information and fourth indication information. It should be explained that the third indication information is used to indicate whether there is subsequent uplink small data to be transmitted, wherein the subsequent refers to after the current uplink data transmission.
  • the second indication information may be determined by the first indication information, or may be jointly determined by the first indication information and the auxiliary information.
  • the second indication information may also be independent of the first indication information and the auxiliary information.
  • the auxiliary information is determined.
  • the first indication information is obtained based on a cause value in the connection restoration request message, or the first indication information is obtained by the first base station based on the uplink data.
  • a reason parameter is added to the connection recovery request message to indicate the reason for the current connection recovery request.
  • the value of the reason parameter that is, the reasons for indicating the current connection recovery request corresponding to different reason values are also different.
  • the cause value in the connection restoration request message is used to indicate that the reason for the current connection restoration request is that the first terminal needs to transmit uplink small data.
  • the first indication information is obtained by the first base station based on the uplink data:
  • the first base station receives the uplink data sent by the first terminal, and the first base station can determine that the uplink data sent by the first terminal is uplink small data, thereby obtaining the first indication information.
  • the CU receives the connection recovery request message and uplink data sent by the first terminal through the DU corresponding to the CU, wherein the DU itself can determine the first
  • the uplink data sent by the terminal is uplink small data, and is notified to the CU, so that the CU obtains the first indication information; if the connection recovery request message includes the reason for indicating the current connection recovery request that the first terminal needs to transmit uplink small data.
  • the reason value the DU transmits the connection recovery request message and the message for determining that the uplink data sent by the first terminal is uplink small data to the CU, so that the CU obtains the first indication information.
  • the first indication information is represented by an interface indication or a cause value.
  • the first base station when the first base station includes a distribution unit and a centralized unit;
  • the method further includes:
  • this implementation manner corresponds to a scenario in which the first base station includes a CU and a DU based on a CU-DU separation architecture.
  • the distribution unit buffers the uplink data, and sends a first signaling transmission message to the centralized unit, where the first signaling transmission message includes fifth indication information and/or the data amount of the uplink data to be transmitted, so The fifth indication information is used to indicate that there is uplink data to be transmitted.
  • the distribution unit DU can determine the data volume of the uplink data sent by the first terminal, so as to determine whether the uplink data sent by the first terminal is uplink small data.
  • the fifth indication information is used to indicate that there is uplink small data to be transmitted.
  • the centralized unit CU can know whether the uplink data sent by the first terminal is uplink small data according to the first signaling transmission message.
  • the DU in the first base station will send the received connection restoration request message to the CU in the first base station.
  • the CU in the first base station After receiving the connection restoration request message sent by the first terminal, the CU in the first base station finds the CU in the second base station, that is, the anchor CU, according to the UE ID identifier in the connection restoration request message, such as I-RNTI.
  • the first signaling transmission message is an initial uplink radio resource control message transmission message.
  • connection recovery request message is encapsulated in the initial uplink radio resource control message transmission message.
  • connection restoration request message includes a reason value for indicating the current connection restoration request
  • the centralized unit CU transmits the fifth indication information and/or the information to be transmitted according to the connection restoration request message and the first signaling transmission message.
  • the data amount of the uplink data knows whether the uplink data sent by the first terminal is uplink small data.
  • the method further includes:
  • the first notification message includes the second base station based on the context information of the first terminal for at least one uplink small data corresponding to the first terminal Forwarding tunnels allocated respectively by the transmitted data radio bearers;
  • the second base station may allocate forwarding tunnels for all data radio bearers corresponding to the first terminal for uplink small data transmission according to the context information of the first terminal, or may be a preset one or a forwarding tunnel. Forwarding tunnels are respectively allocated to the data radio bearers of uplink small data transmission corresponding to the plurality of first terminals, which are not specifically limited here.
  • the first base station sends the uplink data to the second base station, including:
  • the uplink data is sent to the second base station through a first forwarding tunnel, where the first forwarding tunnel is a forwarding tunnel corresponding to a data radio bearer that transmits the uplink data.
  • This step may specifically include: the first base station performs Media Access Control (Media Access Control, MAC) processing and Radio Link Control (Radio Link Control, RLC) processing on the uplink data sent by the first terminal, to obtain the processed uplink data ; Send the processed uplink data to the second base station through the first forwarding tunnel.
  • the second base station performs Packet Data Convergence Protocol (PDCP) processing and Service Data Adaptation Protocol (Service Data Adaptation Protocol, SDAP) processing on the processed uplink data, and sends it to the core network side.
  • PDCP Packet Data Convergence Protocol
  • SDAP Service Data Adaptation Protocol
  • the method in the embodiment of the present disclosure further includes:
  • the second notification message includes a forwarding tunnel allocated by the first base station to at least one data radio bearer used for downlink small data transmission of the first terminal.
  • the first base station when there is expected downlink small data to be transmitted, the first base station will allocate forwarding tunnels respectively for all or part of the data radio bearers of the first terminal used for downlink small data transmission.
  • the method of the embodiment of the present disclosure may further include:
  • the downlink data sent by the second base station through the second forwarding tunnel is the downlink data processed by SDAP and PDCP on the side of the second base station;
  • the processed downlink data is sent to the first terminal after performing RLC processing, MAC processing and physical layer processing.
  • the method of the embodiment of the present disclosure may further include:
  • the second message After completing the small data transmission, receive the second message sent by the second base station, the second message carries a radio resource control release message, and the radio resource control release message is generated by the second base station;
  • a first request message is sent to a second base station through a first base station, where the first request message is used to request to acquire context information of a first terminal, and the first terminal is to send a request to the second base station.
  • the first base station sends a connection recovery request message and uplink data, and the terminal is in an inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is uplink small data to be transmitted, the first
  • the second base station is the anchor base station determined by the first base station based on the connection recovery request message; the first base station receives a first response message sent by the second base station, where the first response message includes the first response message.
  • the anchor base station instructs the anchor point to remain through the indication information, that is, the anchor point does not transfer, so that the terminal does not need to restore the connection state, and the terminal can realize the transmission of small data in the inactive state, thus simplifying
  • the data transmission process improves the transmission efficiency, especially when the terminal moves to other base stations or other centralized units CU, to avoid resource waste caused by signaling overhead.
  • Step 201 A second base station receives a first request message sent by a first base station, where the first request message is used to request to acquire context information of a first terminal, and the first terminal sends a connection to the first base station Recovery request message and uplink data, and the terminal in the inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is uplink small data to be transmitted, and the second base station is the second base station.
  • An anchor base station determined by the base station based on the connection recovery request message;
  • the cause value is used to indicate that the connection resume request is for SDT transmission.
  • gNB-CU sends a UE context establishment request message to gNB-DU;
  • the serving CU sends a notification message to the anchor CU, where the notification message includes the forwarding tunnels for downlink data allocated by the serving CU for all SDT DRBs of the UE;
  • the serving DU processes the buffered SDT data according to the relevant configuration, obtains the PDCP PDU, and sends the PDCP PDU to the serving CU.
  • the serving CU sends the received PDCP PDU to the anchor CU on the forwarding tunnel of the corresponding DRB;
  • This step is optional, that is, when the UE has subsequent uplink data, the serving DU performs MAC and RLC processing, sends the PDCP PDU to the serving DU, and the serving CU sends the forwarding tunnel through the corresponding DRB.
  • the anchor CU performs PDCP and SDAP processing and sends it to the core network (Core Network, CN).
  • the serving DU sends an RRC Release message to the UE.
  • Embodiment 3 The UE initiates UL/DL SDT at the non-anchor CU, and the anchor is transferred;
  • an embodiment of the present disclosure further provides a base station, where the base station is a first base station, including: a memory 520 , a transceiver 510 , and a processor 500 : the memory 520 is used to store a computer program; the transceiver 510 is used for Send and receive data under the control of the processor 500; the processor 500 is used to read the computer program in the memory 520 and perform the following operations:
  • the first request message is used to request to obtain the context information of the first terminal, and the first terminal sends a connection recovery request to the first base station message and uplink data, and the terminal in the inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is small uplink data to be transmitted, and the second base station is the first base station An anchor base station determined based on the connection recovery request message;
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 500 and various circuits of memory represented by memory 520 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 510 may be a number of elements, including a transmitter and a receiver, that provide means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 in performing operations.
  • the first request message further includes: auxiliary information, where the auxiliary information includes at least one of the following information:
  • the first indication information is obtained based on a cause value in the connection restoration request message, or the first indication information is obtained by the first base station based on the uplink data.
  • the first base station includes a distribution unit and a centralized unit
  • the distribution unit buffers the uplink data, and sends a first signaling transmission message to the centralized unit, where the first signaling transmission message includes fifth indication information and/or the data amount of the uplink data to be transmitted, so The fifth indication information is used to indicate that there is uplink data to be transmitted.
  • the first signaling transmission message is an initial uplink radio resource control message transmission message.
  • the transceiver 510 is also used for:
  • the uplink data is sent to the second base station through a first forwarding tunnel, where the first forwarding tunnel is a forwarding tunnel corresponding to a data radio bearer that transmits the uplink data.
  • the transceiver 510 is also used for:
  • the second notification message includes a forwarding tunnel allocated by the first base station to at least one data radio bearer used for downlink small data transmission of the first terminal.
  • the transceiver 510 is also used for:
  • the second forwarding tunnel is a forwarding tunnel corresponding to a data radio bearer that transmits the downlink data
  • the second message is a terminal context release command message.
  • the base station sends a first request message to the second base station through the first base station, where the first request message is used to request to acquire context information of a first terminal, and the first terminal sends a request to the second base station.
  • a base station sends a connection recovery request message and uplink data, and the terminal is in an inactive state.
  • the first request message includes first indication information, and the first indication information is used to indicate that there is small uplink data to be transmitted.
  • the second base station An anchor base station determined by the first base station based on the connection recovery request message; the first base station receives a first response message sent by the second base station, where the first response message includes the information of the first terminal context information, or the context information of the first terminal and the second indication information used to indicate that the anchor point is maintained; the first base station sends the uplink data to the second base station, in this way, in the inactive state
  • the anchor base station instructs the anchor point to remain through the indication information, that is, the anchor point does not transfer, so that the terminal does not need to restore the connection state, and the terminal can realize small data transmission in the inactive state, thereby simplifying data transmission. process, improve transmission efficiency, especially when the terminal moves to other base stations or other centralized units CU, to avoid resource waste caused by signaling overhead.
  • the implementation of the present disclosure further provides an information transmission apparatus, the apparatus is applied to the first base station, and includes:
  • a first sending unit 601 configured to send a first request message to a second base station, where the first request message is used to request to acquire context information of a first terminal, and the first terminal is to send a message to the first base station Connection recovery request message and uplink data, and the terminal in the inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is small uplink data to be transmitted, and the second base station is the the anchor base station determined by the first base station based on the connection recovery request message;
  • a first receiving unit 602 configured to receive a first response message sent by the second base station, where the first response message includes context information of the first terminal, or includes context information of the first terminal and a second indication information indicating that the anchor point is maintained;
  • the second sending unit 603 is configured to send the uplink data to the second base station.
  • the first request message further includes: auxiliary information, where the auxiliary information includes at least one of the following information:
  • the fourth indication information is used to indicate whether there is expected downlink small data to be transmitted.
  • the first indication information is obtained based on a cause value in the connection restoration request message, or the first indication information is obtained by the first base station based on the uplink data.
  • the distribution unit receives the connection restoration request message and the uplink data sent by the first terminal;
  • the distribution unit buffers the uplink data, and sends a first signaling transmission message to the centralized unit, where the first signaling transmission message includes fifth indication information and/or the data amount of the uplink data to be transmitted, so The fifth indication information is used to indicate that there is uplink data to be transmitted.
  • the first signaling transmission message is an initial uplink radio resource control message transmission message.
  • the device further includes:
  • a second receiving unit configured to receive a first notification message sent by the second base station, where the first notification message includes the second base station based on the context information of the first terminal, corresponding to the first terminal at least one forwarding tunnel allocated respectively to the data radio bearer for uplink small data transmission;
  • the second sending unit 603 is specifically used for:
  • the uplink data is sent to the second base station through a first forwarding tunnel, where the first forwarding tunnel is a forwarding tunnel corresponding to a data radio bearer that transmits the uplink data.
  • the device further includes:
  • the device further includes:
  • a fourth sending unit configured to send the downlink data to the first terminal.
  • the device further includes:
  • a fourth receiving unit configured to receive a second message sent by the second base station after completing the small data transmission, where the second message carries a radio resource control release message, and the radio resource control release message is sent by the second base station generate;
  • a fifth sending unit configured to send the radio resource control release message to the first terminal, and release the context information of the first terminal.
  • the second message is a terminal context release command message.
  • the information transmission apparatus sends a first request message to the second base station, where the first request message is used to request to acquire the context information of the first terminal, and the first terminal sends the first request message to the first base station.
  • Connection recovery request message and uplink data, and the terminal in the inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is small uplink data to be transmitted, and the second base station is the An anchor base station determined by the first base station based on the connection recovery request message; receiving a first response message sent by the second base station, where the first response message includes context information of the first terminal, or includes the first response message.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be realized in the form of hardware, and can also be realized in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the related technology, or all or part of the technical solution, and the computer software product is stored in a storage medium.
  • a computer device which may be a personal computer, a server, or a network device, etc.
  • a processor processor
  • the aforementioned storage medium includes: 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 codes .
  • a processor-readable storage medium stores program instructions, and the program instructions are used to cause the processor to perform the following steps:
  • the first request message is used to request to acquire context information of a first terminal, where the first terminal sends a connection recovery request message and uplink data to the first base station, and the terminal in the inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is uplink small data to be transmitted, and the second base station is the first base station based on the connection recovery The anchor base station determined by the request message;
  • the processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg. CD, DVD, BD, HVD, etc.), and semiconductor memory (eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)), etc.
  • magnetic storage eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage eg. CD, DVD, BD, HVD, etc.
  • semiconductor memory eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)
  • an embodiment of the present disclosure further provides a base station, which is a second base station, including: a memory 720 , a transceiver 710 , and a processor 700 : the memory 720 is used to store a computer program; the transceiver 710 is used for Send and receive data under the control of the processor 700; the processor 700 is used to read the computer program in the memory 720 and perform the following operations:
  • a first request message sent by a first base station is received, where the first request message is used to request to acquire context information of a first terminal, which is sent by the first terminal to the first base station Connection recovery request message and uplink data, and the terminal in the inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is small uplink data to be transmitted, and the second base station is the the anchor base station determined by the first base station based on the connection recovery request message;
  • the first base station sends a first response message to the first base station, where the first response message includes context information of the first terminal, or includes context information of the first terminal and second indication information for indicating anchor point retention ;
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 700 and various circuits of memory represented by memory 720 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 710 may be multiple elements, ie, including a transmitter and a receiver, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.
  • the processor 710 may be a central processing unit (Central Processing Unit, CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex) Programmable Logic Device, CPLD), the processor can also adopt a multi-core architecture.
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD complex programmable logic device
  • the processor can also adopt a multi-core architecture.
  • the first request message further includes: auxiliary information, where the auxiliary information includes at least one of the following information:
  • the third indication information is used to indicate whether there is subsequent uplink small data to be transmitted
  • the fourth indication information is used to indicate whether there is expected downlink small data to be transmitted.
  • the first indication information is obtained based on a cause value in the connection restoration request message, or the first indication information is obtained by the first base station based on the uplink data.
  • processor 700 is further configured to:
  • the transceiver 710 is also used for:
  • the uplink data sent by the first base station is received through a first forwarding tunnel, where the first forwarding tunnel is a forwarding tunnel corresponding to a data radio bearer that transmits the uplink data.
  • the transceiver 710 is also used for:
  • the transceiver 710 is also used for:
  • the downlink data is sent to the first base station through a second forwarding tunnel, where the second forwarding tunnel is a forwarding tunnel corresponding to a data radio bearer that transmits the downlink data .
  • processor 700 is further configured to:
  • the transceiver 710 is also used for:
  • the second message is a terminal context release command message.
  • the base station in this embodiment of the present disclosure receives, through the second base station, a first request message sent by the first base station, where the first request message is used to request to acquire context information of a first terminal, and the first terminal is to send a request to the
  • the first base station sends a connection recovery request message and uplink data, and the terminal is in an inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is small uplink data to be transmitted, the second The base station is the anchor base station determined by the first base station based on the connection recovery request message; the second base station sends a first response message to the first base station, where the first response message includes the first terminal's context information, or the context information of the first terminal and the second indication information used to instruct the anchor point to remain, the second base station receives the uplink data sent by the first base station, so, in the inactive state When the terminal in the state transmits small data, the second base station, the anchor base station, instructs the anchor point to remain through the indication information,
  • the implementation of the present disclosure further provides an information transmission apparatus, and the apparatus is applied to the second base station, including:
  • a fifth receiving unit 801 configured to receive a first request message sent by a first base station, where the first request message is used to request to acquire context information of a first terminal, and the first terminal is a request to the first base station
  • the first request message includes first indication information, where the first indication information is used to indicate that there is small uplink data to be transmitted, and the second base station is the the anchor base station determined by the first base station based on the connection recovery request message;
  • a sixth sending unit 802 configured to send a first response message to the first base station, where the first response message includes context information of the first terminal, or includes the context information of the first terminal and an indication of the second indication information held by the anchor point;
  • a sixth receiving unit 803, configured to receive the uplink data sent by the first base station.
  • the first request message also includes: auxiliary information, the auxiliary information includes at least one of the following information:
  • the third indication information is used to indicate whether there is subsequent uplink small data to be transmitted
  • the fourth indication information is used to indicate whether there is expected downlink small data to be transmitted.
  • the first indication information is obtained based on a cause value in the connection restoration request message, or the first indication information is obtained by the first base station based on the uplink data.
  • the device further includes:
  • a first tunnel allocation unit configured to respectively allocate a forwarding tunnel to at least one data radio bearer used for uplink small data transmission corresponding to the first terminal based on the context information of the first terminal;
  • a seventh sending unit configured to send a first notification message to the first base station, where the first notification message includes a forwarding tunnel allocated for the first terminal;
  • the sixth receiving unit 803 is further configured to:
  • the uplink data sent by the first base station is received through a first forwarding tunnel, where the first forwarding tunnel is a forwarding tunnel corresponding to a data radio bearer that transmits the uplink data.
  • the device further includes:
  • a seventh receiving unit configured to receive a second notification message sent by the first base station, where the second notification message includes at least one data radio used for downlink small data transmission where the first base station is the first terminal Carry forwarding tunnels assigned separately.
  • the device further includes:
  • an eighth sending unit configured to send the downlink data to the first base station through a second forwarding tunnel when the downlink data is received, where the second forwarding tunnel is data for transmitting the downlink data The forwarding tunnel corresponding to the radio bearer.
  • the device further includes:
  • a generating unit configured to generate a radio resource control release message after completing the small data transmission
  • a ninth sending unit configured to send a second message to the first base station, where the second message carries a radio resource control release message.
  • the second message is a terminal context release command message.
  • the information transmission apparatus receives a first request message sent by a first base station, where the first request message is used to request to acquire context information of a first terminal, and the first terminal is to send a request to the first terminal.
  • a base station sends a connection recovery request message and uplink data, and the terminal is in an inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is small uplink data to be transmitted, and the second base station is the the anchor base station determined by the first base station based on the connection recovery request message; send a first response message to the first base station, where the first response message includes context information of the first terminal, or includes the first response message.
  • the context information of a terminal and the second indication information used to instruct the anchor point to keep receive the uplink data sent by the first base station.
  • the second base station namely The anchor base station indicates that the anchor point is maintained through the indication information, that is, the anchor point is not transferred, so that the terminal does not need to restore the connection state, and the terminal can realize the transmission of small data in the inactive state, thereby simplifying the data transmission process and improving the transmission efficiency.
  • the terminal moves to other base stations or other centralized units CU, resource waste caused by signaling overhead is avoided.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the related technology, or all or part of the technical solution, and the computer software product is stored in a storage medium.
  • a computer device which may be a personal computer, a server, or a network device, etc.
  • a processor processor
  • the aforementioned storage medium includes: 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 codes .
  • a processor-readable storage medium stores program instructions, and the program instructions are used to cause the processor to execute the following steps:
  • the first request message is used to request to acquire context information of a first terminal, where the first terminal sends a connection recovery request message and uplink data to the first base station , and the terminal in the inactive state, the first request message includes first indication information, the first indication information is used to indicate that there is uplink small data to be transmitted, the second base station is the first base station based on the connection The anchor base station determined by the recovery request message;
  • the first base station sends a first response message to the first base station, where the first response message includes context information of the first terminal, or includes context information of the first terminal and second indication information for indicating anchor point retention ;
  • the processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD, BD, HVD, etc.), and semiconductor memory (eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)), etc.
  • magnetic storage eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage eg, CD, DVD, BD, HVD, etc.
  • semiconductor memory eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)
  • the applicable system may be the Global System of Mobile communication (GSM) system, the Code Division Multiple Access (CDMA) system, the Wideband Code Division Multiple Access (WCDMA) general packet Wireless service (General Packet Radio Service, GPRS) system, Long Term Evolution (Long Term Evolution, LTE) system, LTE Frequency Division Duplex (Frequency Division Duplex, FDD) system, LTE Time Division Duplex (Time Division Duplex, TDD) system, Long Term Evolution Advanced (LTE-A) system, Universal Mobile Telecommunication System (UMTS), Worldwide interoperability for Microwave Access (WiMAX) system, 5G New Radio (New Radio, NR) system, etc.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • Time Division Duplex Time Division Duplex
  • TDD Time Division Duplex
  • the terminal device involved in the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the name of the terminal device may be different.
  • the terminal device may be called user equipment (User Equipment, UE).
  • Wireless terminal equipment can communicate with one or more core networks (Core Network, CN) via a radio access network (Radio Access Network, RAN).
  • RAN Radio Access Network
  • "telephone) and computers with mobile terminal equipment eg portable, pocket-sized, hand-held, computer-built or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network.
  • Wireless terminal equipment may also be referred to as system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in the embodiments of the present application.
  • the base station involved in the embodiments of the present application may include multiple cells that provide services for the terminal.
  • the base station may also be called an access point, or may be a device in the access network that communicates with wireless terminal equipment through one or more sectors on the air interface, or other names.
  • the network device can be used to exchange received air frames with Internet Protocol (IP) packets, and act as a router between the wireless terminal device and the rest of the access network, which can include the Internet. Protocol (IP) communication network.
  • IP Internet Protocol
  • the network devices may also coordinate attribute management for the air interface.
  • the network device involved in the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile Communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA). ), it can also be a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be an evolved network device in a Long Term Evolution (LTE) system (evolutional Node B, eNB or e-NodeB), 5G base station (gNB) in 5G network architecture (next generation system), or Home evolved Node B (HeNB), relay node (relay node) , a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiments of the present application.
  • the network device may include a centralized unit (Centralized Unit, CU) node and a distributed unit (Distributed Unit, DU) node, and the centralized unit and the distributed unit may
  • One or more antennas can be used between the base station and the terminal device for multiple input multiple output (Multi Input Multi Output, MIMO) transmission, and the MIMO transmission can be single user MIMO (Single User MIMO, SU-MIMO) or multi-user MIMO ( Multiple User MIMO, MU-MIMO).
  • MIMO Multiple Input Multi Output
  • MIMO transmission can be two-dimensional multiple-input multiple-output (2Dimension MIMO, 2D-MIMO), three-dimensional multiple-input multiple-output (3Dimension MIMO, 3D-MIMO), full-dimensional multiple-input multiple-output (Full Dimension MIMO, FD-MIMO) or massive multiple-input multiple-output (massive-MIMO), it can also be diversity transmission or precoding transmission or beamforming transmission.
  • 2Dimension MIMO, 2D-MIMO three-dimensional multiple-input multiple-output
  • 3Dimension MIMO, 3D-MIMO three-dimensional multiple-input multiple-output
  • Full-dimensional multiple-input multiple-output Full-dimensional multiple-input multiple-output
  • FD-MIMO full-dimensional multiple-input multiple-output
  • massive-MIMO massive multiple-input multiple-output
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.
  • processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the processor-readable memory result in the manufacture of means including the instructions product, the instruction means implements the functions specified in the flow or flow of the flowchart and/or the block or blocks of the block diagram.
  • processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process that Execution of the instructions provides steps for implementing the functions specified in the flowchart or blocks and/or the block or blocks of the block diagrams.
  • modules can all be implemented in the form of software calling through processing elements; they can also all be implemented in hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in hardware.
  • the determination module may be a separately established processing element, or may be integrated into a certain chip of the above-mentioned device to be implemented, in addition, it may also be stored in the memory of the above-mentioned device in the form of program code, and a certain processing element of the above-mentioned device may Call and execute the function of the above determined module.
  • the implementation of other modules is similar. In addition, all or part of these modules can be integrated together, and can also be implemented independently.
  • the processing element described here may be an integrated circuit with signal processing capability. In the implementation process, each step of the above-mentioned method or each of the above-mentioned modules can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.
  • each module, unit, sub-unit or sub-module may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuit (ASIC), or, one or Multiple microprocessors (digital signal processors, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), etc.
  • ASIC Application Specific Integrated Circuit
  • DSP digital signal processors
  • FPGA Field Programmable Gate Array
  • the processing element may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processors that can call program codes.
  • CPU central processing unit
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip

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  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un dispositif de transmission d'informations, une station de base et un support. Le procédé selon la présente divulgation consiste : à transmettre à une seconde station de base, par une première station de base, un premier message de demande utilisé pour demander l'acquisition d'informations de contexte d'un premier terminal, le premier terminal étant un terminal dans un état inactif, le premier message de demande comprenant des premières informations d'indication utilisées pour indiquer la présence d'une faible quantité de données de liaison montante devant être transmises ; à recevoir un premier message de réponse transmis par une seconde station de base comprenant les informations de contexte du premier terminal ou comprenant les informations de contexte du premier terminal et des secondes informations d'indication utilisées pour indiquer une rétention d'ancrage ; et à transmettre des données de liaison montante à la seconde station de base.
PCT/CN2021/138555 2021-01-22 2021-12-15 Procédé et dispositif de transmission d'informations, station de base et support WO2022156439A1 (fr)

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