WO2020119546A1 - Procédé de communication et appareil de communication - Google Patents

Procédé de communication et appareil de communication Download PDF

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Publication number
WO2020119546A1
WO2020119546A1 PCT/CN2019/122966 CN2019122966W WO2020119546A1 WO 2020119546 A1 WO2020119546 A1 WO 2020119546A1 CN 2019122966 W CN2019122966 W CN 2019122966W WO 2020119546 A1 WO2020119546 A1 WO 2020119546A1
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WIPO (PCT)
Prior art keywords
information
data
address information
distributed unit
message
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PCT/CN2019/122966
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English (en)
Chinese (zh)
Inventor
晋英豪
韩锋
谭巍
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华为技术有限公司
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Publication of WO2020119546A1 publication Critical patent/WO2020119546A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/22—Manipulation 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present application relates to the field of communication, and more specifically, to a communication method and communication device.
  • a new base station architecture is defined in 5th generation (5G), introducing the concept of separation of centralized unit (CU) and distributed unit (DU), that is, the base station It is divided into CU and DU.
  • 5G 5th generation
  • CU centralized unit
  • DU distributed unit
  • a terminal device in certain states such as an inactive terminal device in 5G transmits data
  • a data tunnel needs to be established between the DU and the CU based on the bearer.
  • this method for data transmission it is necessary to complete the establishment of the data tunnel through multiple signaling interactions between the DU and CU. At this time, a large signaling overhead will be generated and the data transmission delay will also be caused. Cause an impact.
  • the present application provides a communication method and a communication device, which can reduce the signaling overhead of a terminal device in an inactive state during data transmission, reduce the delay of data transmission, and improve the efficiency of system data transmission.
  • a communication method includes: a distributed unit receives data sent by a terminal device in a deactivated state; the distributed unit determines first information corresponding to the data, the first The information corresponds to the data wireless bearer; the distributed unit sends the first information to the central unit.
  • the distributed unit receives the data sent by the terminal device in the deactivated state, determines the first information corresponding to the data, and sends the first information to the central unit, the The central unit may determine the data radio bearer corresponding to the data according to the first information, and process the data according to the protocol stack corresponding to the data radio bearer. Therefore, the terminal device does not need to switch from the inactive state to the connected state. Data can be transmitted, which can reduce the signaling overhead of the terminal equipment in the inactive state during data transmission, reduce the delay of data transmission, and improve the efficiency of system data transmission.
  • the first information includes at least one of the following: a logical channel identifier corresponding to the data, address information, or a network slice identifier corresponding to the data, where the address information includes the following At least one item: uplink data transmission address information corresponding to the data radio bearer identifier, uplink data transmission address information corresponding to the logical channel identifier, or uplink data transmission address information corresponding to the network slice identifier.
  • the distributed unit sending the first information to the central unit includes: the distributed unit sending the first information to the central unit through an initial uplink radio resource control message transmission message The first message.
  • the distributed unit sends the first information to the central unit through the control plane channel in the inactive state. Since the control plane channel in the inactive state is used, it is not necessary to switch from the inactive state. Switching to the connected state can improve the efficiency of system data transmission.
  • the communication method further includes: the distributed unit receives second information sent by the central unit, and the second information is used to indicate at least one of the following: the data radio bearer Correspondence between the identifier and the address information, correspondence between the logical channel identifier and the address information, or correspondence between the network slice identifier and the address information.
  • the determining of the first information corresponding to the data by the distributed unit includes: the distributed unit determining the address information according to the corresponding relationship.
  • the distributed unit determines the address information according to the correspondence, and sends data to the central unit in the data plane tunnel corresponding to the address information without switching to The data is transmitted after the connection state. Therefore, the signaling overhead and transmission delay in the data transmission process can be reduced, and the efficiency of system data transmission can be improved.
  • the distributed unit receiving the second information sent by the central unit includes: the distributed unit receives a first message sent by the central unit through an interface establishment reply message or a context release command message ⁇ Second information.
  • the distributed unit receives the second information sent by the central unit through the control plane channel in the inactive state. Since the control plane channel in the inactive state is used, there is no need to switch from the inactive state To the connected state, the efficiency of system data transmission can be improved.
  • the distributed unit sending the first information to the central unit includes the distributed unit sending the first information and the data to the central unit.
  • the distributed unit sends the first information and the data to the central unit, and the central unit can determine the data wireless corresponding to the data according to the first information Bearer, and process the data according to the protocol stack corresponding to the data wireless bearer, so that the terminal device can transmit data without switching from the inactive state to the connected state, thereby reducing the terminal device in the inactive state during data transmission Signaling overhead, reduce the delay of data transmission, and improve the efficiency of system data transmission.
  • the communication method further includes: the distributed unit receives third information sent by the central unit through a context establishment request message, and the third information is used to indicate the distributed unit Establish the data radio bearer.
  • the distributed unit receives the third information sent by the central unit, and the distributed unit may establish only the data radio bearer corresponding to the first information according to the third information Without establishing other data radio bearers, it can reduce the signaling overhead and delay of establishing data radio bearers, thereby reducing the signaling overhead and delay in the data transmission process, and improving the efficiency of system data transmission.
  • a communication method includes: a central unit receives first information sent by a distributed unit; the central unit determines a data radio bearer corresponding to the first information according to the first information; The central unit receives data sent by the terminal device from the distributed unit in a deactivated state.
  • the central unit receives the first information sent by the distributed unit, and the central unit may determine the data radio bearer corresponding to the first information according to the first information.
  • the central unit can process the data according to the protocol stack corresponding to the data wireless bearer, so that the terminal device does not need to switch from the inactive state to the connected state Data can be transmitted, which can reduce the signaling overhead of the terminal device in the inactive state during data transmission, reduce the delay of data transmission, and improve the efficiency of system data transmission.
  • the first information includes at least one of the following: a logical channel identifier corresponding to the data, address information, and a network slice identifier corresponding to the data, where the address information includes at least the following One item: uplink data transmission address information corresponding to the data radio bearer identifier, uplink data transmission address information corresponding to the logical channel identifier, or uplink data transmission address information corresponding to the network slice identifier.
  • the central unit receiving the first information sent by the distributed unit includes: the central unit receiving the first information sent by the distributed unit through an initial uplink radio resource control message transmission message information.
  • the central unit may receive the first information sent by the distributed unit through the control plane channel in the inactive state. Since the control plane channel in the inactive state is used, there is no need to Switching from inactive state to connected state can improve the efficiency of system data transmission.
  • the communication method further includes: the central unit sends second information to the distributed unit, where the second information is used to indicate at least one of the following: the data radio bearer identifier The correspondence relationship with the address information, or the correspondence relationship between the logical channel identifier and the address information, or the correspondence relationship between the network slice identifier and the address information.
  • the central unit sending the second information to the distributed unit includes: the central unit sends the first information to the distributed unit through an interface establishment reply message or a context release command message ⁇ Second information.
  • the central unit transmits the second information to the distributed unit through the control plane channel in the inactive state, and can transmit data without switching from the inactive state to the connected state. Improve the efficiency of system data transmission.
  • the central unit receiving the first information sent by the distributed unit includes: the central unit receiving the first information and the data sent by the distributed unit.
  • the central unit receives the first information and the data sent by the distributed unit, and the central unit may determine the data corresponding to the data according to the first information Wireless bearer, and process the data according to the protocol stack corresponding to the data wireless bearer, so that the terminal device can transmit data without switching from the inactive state to the connected state, thereby reducing the data transmission process of the terminal device in the inactive state
  • the signaling overhead in the system reduces the delay of data transmission and improves the efficiency of system data transmission.
  • the communication method further includes: the central unit sends third information to the distributed unit through a context establishment request message, where the third information is used to instruct the distributed unit to establish The data is wirelessly carried.
  • the central unit sends the third information to the distributed unit, and the distributed unit may establish only the data radio corresponding to the first information according to the third information Bearer, without the need to establish other data radio bearers, can reduce the signaling overhead and delay of establishing a data radio bearer, thereby reducing the signaling overhead and delay in the data transmission process, and improve the efficiency of system data transmission.
  • the central unit includes CU-UP and CU-CP.
  • the communication method further includes: the CU-UP sending the second information to the CU-CP.
  • the CU-CP receives the second information sent by the CU-UP, and sends the second information to the distributed unit, and accordingly, the distribution
  • the formula unit can determine the address information according to the correspondence in the second information, and send data to the CU-CP in the data plane tunnel corresponding to the address information without having to switch to the connected state before transmitting the data Therefore, it can reduce signaling overhead and transmission delay during data transmission, and improve the efficiency of system data transmission.
  • the communication method further includes: the CU-CP sending the first information to the CU-UP.
  • the CU-UP receives the first information sent by the CU-CP, and the CU-UP may determine the data radio bearer corresponding to the data according to the first information , And process the data according to the protocol stack corresponding to the data wireless bearer. Therefore, the terminal device can transmit data without switching from the inactive state to the connected state, which can reduce signaling overhead during data transmission and reduce data transmission. Delay, improve the efficiency of system data transmission.
  • a communication device in a third aspect, includes: a receiving module for receiving data sent by a terminal device in a deactivated state; a processing module for determining first information corresponding to the data, the The first information corresponds to the data wireless bearer; the sending module is used to send the first information to the central unit.
  • the communication apparatus receives the data sent by the terminal device in the deactivated state, determines the first information corresponding to the data, and sends the first information to the central unit.
  • the central unit may determine the data radio bearer corresponding to the data according to the first information, and process the data according to the protocol stack corresponding to the data radio bearer. Therefore, the terminal device does not need to switch from the inactive state to the connected state Data can be transmitted, which can reduce the signaling overhead of the terminal device in the inactive state during data transmission, reduce the delay of data transmission, and improve the efficiency of system data transmission.
  • the first information includes at least one of the following: a logical channel identifier corresponding to the data, address information, or a network slice identifier corresponding to the data, where the address information includes the following At least one item: uplink data transmission address information corresponding to the data radio bearer identifier, uplink data transmission address information corresponding to the logical channel identifier, or uplink data transmission address information corresponding to the network slice identifier.
  • the sending module is specifically configured to send the first information to the central unit through an initial uplink radio resource control message transmission message.
  • the communication device sends the first information to the central unit through the control plane channel in the inactive state. Since the control plane channel in the inactive state is used, there is no need to switch from the inactive state To the connected state, the efficiency of system data transmission can be improved.
  • the receiving module is further configured to: receive second information sent by the central unit, where the second information is used to indicate at least one of the following: the data radio bearer identifier and the The correspondence between the address information, the correspondence between the logical channel identifier and the address information, or the correspondence between the network slice identifier and the address information.
  • the processing module is specifically configured to: determine the address information according to the corresponding relationship.
  • the communication device determines the address information according to the correspondence, and sends data to the central unit in the data plane tunnel corresponding to the address information according to the address information, It is not necessary to switch to the connected state before transmitting data. Therefore, the signaling overhead and transmission delay in the data transmission process can be reduced, and the efficiency of system data transmission can be improved.
  • the receiving module is specifically configured to receive the second information sent by the central unit through an interface establishment reply message or a context release command message.
  • the communication device receives the second information sent by the central unit through the control plane channel in the inactive state. Since the control plane channel in the inactive state is used, there is no need to switch from the inactive state to the Connected state can improve the efficiency of system data transmission.
  • the sending module is specifically configured to send the first information and the data to the central unit.
  • the communication device sends the first information and the data to the central unit, and the central unit can determine the data radio bearer corresponding to the data according to the first information And process the data according to the protocol stack corresponding to the data wireless bearer, so that the terminal device can transmit data without switching from the inactive state to the connected state, thereby reducing the data transmission process of the terminal device in the inactive state
  • Signaling overhead reduces the delay of data transmission and improves the efficiency of system data transmission.
  • the receiving module is further configured to: receive third information sent by the central unit through a context establishment request message, where the third information is used to instruct the distributed unit to establish the data Wireless bearer.
  • the communication device receives the third information sent by the central unit, and the communication device may establish only the data wireless bearer corresponding to the first information according to the third information, and There is no need to establish other data radio bearers, which can reduce the signaling overhead and delay of establishing data radio bearers, thereby reducing the signaling overhead and delay in the data transmission process, and improving the efficiency of system data transmission.
  • a communication device includes: a receiving module for receiving first information sent by a distributed unit; and a processing module for determining, according to the first information, the corresponding information of the first information Data wireless bearer; the receiving module is used to receive data sent by the terminal device from the distributed unit in a deactivated state.
  • the communication device receives the first information sent by the distributed unit, and the communication device may determine the data radio bearer corresponding to the first information according to the first information, after receiving After the data sent by the terminal device from the distributed unit in the deactivated state, the communication apparatus may process the data according to the protocol stack corresponding to the data wireless bearer, so that the terminal device does not need to switch from the inactive state Data can be transferred to the connected state, which can reduce the signaling overhead of the terminal equipment in the inactive state during data transmission, reduce the delay of data transmission, and improve the efficiency of system data transmission.
  • the first information includes at least one of the following: a logical channel identifier corresponding to the data, address information, and a network slice identifier corresponding to the data, where the address information includes at least the following One item: uplink data transmission address information corresponding to the data radio bearer identifier, uplink data transmission address information corresponding to the logical channel identifier, or uplink data transmission address information corresponding to the network slice identifier.
  • the receiving module is specifically configured to: receive the first information sent by the distributed unit through an initial uplink radio resource control message transmission message.
  • the communication device may receive the first information sent by the distributed unit through the control plane channel in the inactive state. Since the control plane channel in the inactive state is used, there is no need to Switching from inactive state to connected state can improve the efficiency of system data transmission.
  • the communication device further includes a sending module, configured to send second information to the distributed unit, where the second information is used to indicate at least one of the following: the data radio bearer The correspondence between the identifier and the address information, or the correspondence between the logical channel identifier and the address information, or the correspondence between the network slice identifier and the address information.
  • the sending module is specifically configured to send the second information to the distributed unit through an interface establishment reply message or a context release command message.
  • the communication device transmits the second information to the distributed unit through the control plane channel in the inactive state, and can transmit data without switching from the inactive state to the connected state. Can improve the efficiency of system data transmission.
  • the receiving module is specifically configured to: receive the first information and the data sent by the distributed unit.
  • the communication device receives the first information and the data sent by the distributed unit, and the communication device may determine the data corresponding to the data according to the first information Wireless bearer, and process the data according to the protocol stack corresponding to the data wireless bearer, so that the terminal device can transmit data without switching from the inactive state to the connected state, thereby reducing the data transmission process of the terminal device in the inactive state
  • the signaling overhead in the system reduces the delay of data transmission and improves the efficiency of system data transmission.
  • the sending module is further configured to send third information to the distributed unit through a context establishment request message, where the third information is used to instruct the distributed unit to establish the data Wireless bearer.
  • the communication device sends the third information to the distributed unit, and the distributed unit may only establish data wireless corresponding to the first information according to the third information Bearer, without the need to establish other data radio bearers, can reduce the signaling overhead and delay of establishing a data radio bearer, thereby reducing the signaling overhead and delay in the data transmission process, and improve the efficiency of system data transmission.
  • the communication device includes CU-UP and CU-CP.
  • the sending module belongs to the CU-UP, and the sending module is further configured to send the second information to the CU-CP by the CU-UP.
  • the CU-CP receives the second information sent by the CU-UP, and sends the second information to the distributed unit, and accordingly, the distribution
  • the formula unit can determine the address information according to the correspondence in the second information, and send data to the CU-CP in the data plane tunnel corresponding to the address information according to the address information without switching to the connection After the data is transmitted, the signaling overhead and transmission delay during data transmission can be reduced, and the efficiency of system data transmission can be improved.
  • the sending module belongs to the CU-CP, and the sending module is further configured to: the CU-CP sends the first information to the CU-UP.
  • the CU-UP receives the first information sent by the CU-CP, and the CU-UP may determine the data radio bearer corresponding to the data according to the first information , And process the data according to the protocol stack corresponding to the data wireless bearer. Therefore, the terminal device can transmit data without switching from the inactive state to the connected state, which can reduce signaling overhead during data transmission and reduce data transmission. Delay, improve the efficiency of system data transmission.
  • a communication device includes: a receiver for receiving data sent by a terminal device in a deactivated state; a processor for determining first information corresponding to the data, the The first information corresponds to the data radio bearer; the transmitter is configured to send the first information to the central unit.
  • the communication apparatus receives the data sent by the terminal device in the deactivated state, determines the first information corresponding to the data, and sends the first information to the central unit.
  • the central unit may determine the data radio bearer corresponding to the data according to the first information, and process the data according to the protocol stack corresponding to the data radio bearer. Therefore, the terminal device does not need to switch from the inactive state to the connected state Data can be transmitted, which can reduce the signaling overhead of the terminal device in the inactive state during data transmission, reduce the delay of data transmission, and improve the efficiency of system data transmission.
  • the first information includes at least one of the following: a logical channel identifier corresponding to the data, address information, or a network slice identifier corresponding to the data, where the address information includes the following At least one item: uplink data transmission address information corresponding to the data radio bearer identifier, uplink data transmission address information corresponding to the logical channel identifier, or uplink data transmission address information corresponding to the network slice identifier.
  • the transmitter is specifically configured to: send the first information to the central unit through an initial uplink radio resource control message transmission message.
  • the communication device sends the first information to the central unit through the control plane channel in the inactive state. Since the control plane channel in the inactive state is used, there is no need to switch from the inactive state To the connected state, the efficiency of system data transmission can be improved.
  • the receiver is further configured to: receive second information sent by the central unit, where the second information is used to indicate at least one of the following: the data radio bearer identifier and the The correspondence between the address information, the correspondence between the logical channel identifier and the address information, or the correspondence between the network slice identifier and the address information.
  • the processor is specifically configured to: determine the address information according to the correspondence.
  • the communication device determines the address information according to the correspondence, and sends data to the central unit in the data plane tunnel corresponding to the address information according to the address information, It is not necessary to switch to the connected state before transmitting data. Therefore, the signaling overhead and transmission delay in the data transmission process can be reduced, and the efficiency of system data transmission can be improved.
  • the receiver is specifically configured to receive the second information sent by the central unit through an interface establishment reply message or a context release command message.
  • the communication device receives the second information sent by the central unit through the control plane channel in the inactive state. Since the control plane channel in the inactive state is used, there is no need to switch from the inactive state to the Connected state can improve the efficiency of system data transmission.
  • the transmitter is specifically configured to: send the first information and the data to the central unit.
  • the communication device sends the first information and the data to the central unit, and the central unit can determine the data radio bearer corresponding to the data according to the first information And process the data according to the protocol stack corresponding to the data wireless bearer, so that the terminal device can transmit data without switching from the inactive state to the connected state, thereby reducing the data transmission process of the terminal device in the inactive state
  • Signaling overhead reduces the delay of data transmission and improves the efficiency of system data transmission.
  • the receiver is further configured to receive third information sent by the central unit through a context establishment request message, where the third information is used to instruct the distributed unit to establish the data Wireless bearer.
  • the communication device receives the third information sent by the central unit, and the communication device may establish only the data wireless bearer corresponding to the first information according to the third information, and There is no need to establish other data radio bearers, which can reduce the signaling overhead and delay of establishing data radio bearers, thereby reducing the signaling overhead and delay in the data transmission process, and improving the efficiency of system data transmission.
  • Each module included in the communication device in the fifth aspect may be implemented in software and/or hardware.
  • the communication device in the fifth aspect may include a memory for storing program instructions executed by the processor, and even for storing various data.
  • the communication device in the fifth aspect may be a chip that can be integrated in a smart device.
  • the communication device may further include a communication interface.
  • a communication device includes: a receiver for receiving first information sent by a distributed unit; and a processor for determining according to the first information corresponding to the first information Data wireless bearer; the receiver is used to receive data sent by the terminal device from the distributed unit in a deactivated state.
  • the communication device receives the first information sent by the distributed unit, and the communication device may determine the data radio bearer corresponding to the first information according to the first information, after receiving After the data sent by the terminal device from the distributed unit in the deactivated state, the communication apparatus may process the data according to the protocol stack corresponding to the data wireless bearer, so that the terminal device does not need to switch from the inactive state Data can be transmitted to the connected state, which can reduce the signaling overhead of the terminal equipment in the inactive state during data transmission, reduce the delay of data transmission, and improve the efficiency of system data transmission.
  • the first information includes at least one of the following: a logical channel identifier corresponding to the data, address information, and a network slice identifier corresponding to the data, where the address information includes at least the following One item: uplink data transmission address information corresponding to the data radio bearer identifier, uplink data transmission address information corresponding to the logical channel identifier, or uplink data transmission address information corresponding to the network slice identifier.
  • the receiver is specifically configured to: receive the first information sent by the distributed unit through an initial uplink radio resource control message transmission message.
  • the communication device may receive the first information sent by the distributed unit through the control plane channel in the inactive state. Since the control plane channel in the inactive state is used, there is no need to Switching from inactive state to connected state can improve the efficiency of system data transmission.
  • the communication device further includes a transmitter, configured to send second information to the distributed unit, where the second information is used to indicate at least one of the following: the data radio bearer The correspondence between the identifier and the address information, or the correspondence between the logical channel identifier and the address information, or the correspondence between the network slice identifier and the address information.
  • the transmitter is specifically configured to send the second information to the distributed unit through an interface establishment reply message or a context release command message.
  • the communication device transmits the second information to the distributed unit through the control plane channel in the inactive state, and can transmit data without switching from the inactive state to the connected state. Can improve the efficiency of system data transmission.
  • the receiver is specifically configured to: receive the first information and the data sent by the distributed unit.
  • the communication device receives the first information and the data sent by the distributed unit, and the communication device may determine the data corresponding to the data according to the first information Wireless bearer, and process the data according to the protocol stack corresponding to the data wireless bearer, so that the terminal device can transmit data without switching from the inactive state to the connected state, thereby reducing the data transmission process of the terminal device in the inactive state
  • the signaling overhead in the system reduces the delay of data transmission and improves the efficiency of system data transmission.
  • the transmitter is further configured to send third information to the distributed unit through a context establishment request message, where the third information is used to instruct the distributed unit to establish the data Wireless bearer.
  • the communication device sends the third information to the distributed unit, and the distributed unit may only establish data wireless corresponding to the first information according to the third information Bearer, without the need to establish other data radio bearers, can reduce the signaling overhead and delay of establishing a data radio bearer, thereby reducing the signaling overhead and delay in the data transmission process, and improve the efficiency of system data transmission.
  • the communication device includes CU-UP and CU-CP.
  • the transmitter belongs to the CU-UP, and the transmitter is further configured to: the CU-UP sends the second information to the CU-CP.
  • the CU-CP receives the second information sent by the CU-UP, and sends the second information to the distributed unit, and accordingly, the distribution
  • the formula unit can determine the address information according to the correspondence in the second information, and send data to the CU-CP in the data plane tunnel corresponding to the address information according to the address information without switching to the connection After the data is transmitted, the signaling overhead and transmission delay during data transmission can be reduced, and the efficiency of system data transmission can be improved.
  • the transmitter belongs to the CU-CP, and the transmitter is further configured to: the CU-CP sends the first information to the CU-UP.
  • the CU-UP receives the first information sent by the CU-CP, and the CU-UP may determine the data radio bearer corresponding to the data according to the first information , And process the data according to the protocol stack corresponding to the data wireless bearer. Therefore, the terminal device can transmit data without switching from the inactive state to the connected state, which can reduce signaling overhead during data transmission and reduce data transmission. Delay, improve the efficiency of system data transmission.
  • Each module included in the communication device in the sixth aspect may be implemented in software and/or hardware.
  • the communication device in the sixth aspect may include a memory for storing program instructions executed by the processor, and even for storing various data.
  • the communication device in the sixth aspect may be a chip that can be integrated in a smart device.
  • the communication device may further include a communication interface.
  • the present application provides a computer-readable storage medium.
  • the computer-readable storage medium stores program codes for execution by the communication device.
  • the program code includes instructions for executing the communication method in the first aspect or any one of the possible implementation manners.
  • the present application provides a computer-readable storage medium.
  • the computer-readable storage medium stores program codes for execution by the communication device.
  • the program code includes instructions for performing the communication method in the second aspect or any one of the possible implementation manners.
  • the present application provides a computer program product containing instructions.
  • the computer program product runs on the communication device, the communication device is caused to execute the method in the first aspect or any one of the possible implementation manners.
  • the present application provides a computer program product containing instructions.
  • the computer program product runs on the communication device, the communication device is caused to perform the method in the second aspect or any one of the possible implementation manners.
  • the distributed unit receives the data sent by the terminal device in the deactivated state, determines the first information corresponding to the data, and sends the first information to the central unit, the The central unit may determine the data radio bearer corresponding to the data according to the first information, and process the data according to the protocol stack corresponding to the data radio bearer. Therefore, the terminal device does not need to switch from the inactive state to the connected state. Data can be transmitted, which can reduce the signaling overhead of the terminal equipment in the inactive state during data transmission, reduce the delay of data transmission, and improve the efficiency of system data transmission.
  • FIG. 1 is a schematic diagram of an application scenario of the technical solution of the embodiment of the present application.
  • FIG. 2 is a schematic diagram of another application scenario of the technical solution of the embodiment of the present application.
  • FIG. 3 is a schematic diagram of still another application scenario of the technical solution of the embodiment of the present application.
  • FIG. 4 is a schematic diagram of still another application scenario of the technical solution of the embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a communication method according to an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a communication method according to another embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a communication method according to another embodiment of the present application.
  • FIG. 8 is a schematic flowchart of a communication method according to another embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a communication method according to another embodiment of the present application.
  • FIG. 10 is a schematic flowchart of a communication method according to another embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a communication device according to another embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a communication device according to another embodiment of the present application.
  • FIG. 1 shows a schematic diagram of an application scenario of the technical solution of the embodiments of the present application. As shown in FIG. 1, the network device Some functions are separated into a first network node and a second network node.
  • FIG. 2 shows a schematic diagram of another application scenario of the technical solution of the embodiment of the present application.
  • CU-DU segmentation is introduced.
  • the DU may correspond to the first in FIG. 1.
  • a network node, CU corresponds to the second network node in FIG. 1.
  • first network node and the second network node may be two physically or logically separated modules in an overall network architecture, or two completely independent logical network elements.
  • the second network node may separate the control plane and the user plane to form the user plane of the second network node and the control plane of the second network node.
  • CU has radio resource control (radio resource control, RRC) or part of RRC control functions, including all protocol layer functions or part of protocol layer functions of existing base stations; for example, including only RRC functions or part of RRC functions, or including RRC functions or services Data adaptation protocol (service, adaptation, protocol, SDAP) layer functions, or include RRC/packet data convergence protocol (packet data, convergence, protocol, PDCP) layer functions, or include RRC/PDCP and some radio link layer control protocols (radio link) control, RLC) layer function; or including RRC/PDCP/media access control (MAC) layer, or even part or all of the physical layer PHY function, does not rule out any other possibility.
  • RRC radio resource control
  • RRC radio resource control
  • the DU has all the protocol layer functions of the existing base station except the protocol layer functions of the CU, that is, some protocol layer functional units of RRC/SDAP/PDCP/RLC/MAC/PHY, such as including some RRC functions and PDCP/RLC/ Protocol layer functions such as MAC/PHY, or include protocol layer functions such as PDCP/RLC/MAC/PHY, or include protocol layer functions such as RLC/MAC/PHY, or include some RLC/MAC/PHY functions, or only all or part of PHY Function; It should be noted that the functions of the various protocol layers mentioned here may change, all within the scope of protection of this application. For example, DU has all the protocol layer functions of existing base stations.
  • the functions of the PDCP and above protocol layers are set in the CU, and the functions of the protocol layers below PDCP, such as RLC and MAC, are set in the DU.
  • this division of the protocol layer is only an example, and it can also be divided in other protocol layers, such as the division at the RLC layer, the functions of the RLC layer and above protocol layers are set to CU, and the functions of the protocol layers below the RLC layer are set at DU.
  • some functions of the RLC layer and the functions of the protocol layer above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layer below the RLC layer are set in the DU.
  • the radio frequency device can be remotely located, not placed in the DU, or integrated in the DU, or partially remotely and partially integrated in the DU, without any limitation here.
  • relay nodes also have new technological developments.
  • relay nodes are only deployed with layer 2 (for example, including the radio link control (resource link control, RLC) layer, MAC layer, etc.)
  • the protocol stack architecture of layer 1 eg, including the PHY layer
  • all the protocol stack functions above layer 2 such as all RRC layer functions, are not deployed. Therefore, the data or signaling generated by the host base station needs to be forwarded by the relay node to the terminal device.
  • the first network node in the embodiment of the present application may correspond to the DU in the CU-DU architecture or the above relay node
  • the second network node may correspond to the CU in the CU-DU architecture, or Corresponds to the above-mentioned host base station.
  • a network device may include one CU and at least one DU.
  • the current third-generation partnership program (3rd generation partnership program) project, 3GPP) the interface between CUs in different network devices is Xn-C, the interface between CU and 5G core network (5G core network, 5GC) is Ng, and the interface between CU and DU is named F1,
  • the F1 interface includes a control plane (CP) and a user plane (user) (UP).
  • the transport layer protocol of the control plane is the stream control transmission protocol (stream control control protocol (SCTP), and the application layer message transmitted is F1AP ( application) protocol) message.
  • the transport layer protocol of the user plane is the GPRS tunneling protocol (GPRS tunneling protocol-user plane, GTP-U) at the user level.
  • FIG. 4 shows a schematic diagram of still another application scenario of the technical solution of the embodiment of the present application.
  • the E1 interface is between the CU-CP and CU-UP Interface, F1-U connection between CU-UP and DU, F1-C connection between CU-CP and DU, Ng-U connection between CU-UP and 5GC, between CU-CP and 5GC Ng-C connection.
  • GSM global mobile communication
  • CDMA code division multiple access
  • WCDMA broadband code Wideband code
  • GSM global mobile communication
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile communication system
  • WiMAX future fifth generation communication system 5th generation
  • 5G fifth generation
  • NR new radio
  • the network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may be a global system for mobile (GSM) system or code division multiple access (CDMA)
  • the base station (base transceiver) (BTS) in the system can also be the base station (NodeB, NB) in the wideband code division multiple access (WCDMA) system or the evolved base station (evolved) in the LTE system NodeB, eNB or eNodeB), or a wireless controller in a cloud radio access network (CRAN) scenario
  • the network device can be a relay station, an access point, an in-vehicle device, a wearable device, and future Network devices in a 5G network or network devices in a PLMN network that will evolve in the future are not limited in the embodiments of the present application.
  • 3rd-Generation, 3G UMTS there is a scenario where the wireless network control node and the base station are separated; in the LTE system, there is a scenario where the baseband module and the radio frequency module are separated, that is, radio frequency Remote scenarios; Data Center (DC) scenarios, which require interconnection between two different networks; large and small station scenarios, where large and small stations are connected to each other with interfaces; LTE and Wifi aggregation (LTE-Wifi aggregation, LWA) scenarios; There are various non-cell scenarios in the 5G system (the terminal can freely switch between each cell at will, and there is no clear boundary between each cell), there is a control node connected to all cells, or under the cell Connect each transmission node; CRAN scenario, where there is a BBU segmentation scenario; CRAN virtualization scenario, where some functions of BBU are centrally deployed, virtualization, and other functions are deployed separately, there is a possibility of physical separation between the two parts; should It is
  • the terminal equipment in the embodiments of the present application may refer to user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless Communication equipment, user agent or user device.
  • Terminal devices can also be cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (personal digital assistants, PDAs), and wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or public land mobile communication networks (PLMN) in the future evolution
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDAs personal digital assistants
  • the terminal device and the like are not limited in this embodiment of the present application.
  • the network device and/or the terminal device may have corresponding forms, which is not limited in this application.
  • 5G includes three typical business scenarios:
  • the first is enhanced mobile broadband.
  • the peak rate of Internet access for intelligent end users should reach 10Gbps or even 20Gbps, providing support for large-bandwidth applications such as virtual reality, ubiquitous video live broadcast and sharing, and cloud access anytime and anywhere.
  • the second is the big connection to the Internet of Things.
  • the 5G network needs to support the connection of people and things with a scale of 1 million square kilometers.
  • the third is low-latency, ultra-reliable communication.
  • This scenario requires a 5G network delay of 1 millisecond to provide strong support for low-latency services such as intelligent manufacturing, remote machine control, assisted driving, and autonomous driving.
  • the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes central processing unit (CPU), memory management unit (memory management unit, MMU), and memory (also called main memory) and other hardware.
  • the operating system may be any one or more computer operating systems that implement business processes through processes, for example, a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system.
  • the application layer includes browser, address book, word processing software, instant messaging software and other applications.
  • the embodiment of the present application does not specifically limit the specific structure of the execution body of the method provided in the embodiment of the present application, as long as it can run the program that records the code of the method provided by the embodiment of the present application to provide according to the embodiment of the present application
  • the method may be used for communication.
  • the execution body of the method provided in the embodiments of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call a program and execute the program.
  • the term "article of manufacture” as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium.
  • the computer-readable medium may include, but is not limited to: magnetic storage devices (for example, hard disks, floppy disks, or magnetic tapes, etc.), optical disks (for example, compact discs (CDs), digital universal discs (digital discs, DVDs)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • a new RRC state is introduced for the terminal equipment, which is called inactive state.
  • the terminal device in the inactive state terminates the connection between the terminal device and the network device.
  • the access stratum (AS, access) context of the terminal device is simultaneously stored on the terminal device side and the network side.
  • the terminal device requests the network device to restore the connection.
  • the terminal device transitions from the inactive state to the connected state, the link between the network device and the core network control plane may not be reactivated.
  • the process of transitioning the terminal device from the connected state to the inactive state may include the following steps:
  • the CU sends a UE context release command (UE context release command) message to the DU, which is used by the DU to release the context of the terminal device.
  • UE context release command UE context release command
  • the DU does not retain the context of the terminal device, and all the context is stored in the CU;
  • the DU sends an RRC connection release (RRC connection release) message to the terminal device.
  • RRC connection release RRC connection release
  • the terminal device After receiving the RRC connection release message, the terminal device enters if the RRC connection release message includes suspend configuration information Inactive state; if the RRC connection release message does not include suspend configuration information, then enter the idle state (idle);
  • the DU sends a UE context release complete (UE context release) message to the CU.
  • UE context release UE context release
  • the process of switching the terminal device from the inactive state to the connected state may include the following steps:
  • the CU If downlink data arrives in the core network, the CU sends a paging message to the DU;
  • the DU After receiving the paging message, the DU sends the paging message to the terminal device through the air interface;
  • the terminal device sends an RRC connection recovery request (RRC connection resume request) message or RRC recovery request (RRC resume request) message to the DU;
  • the DU After receiving the RRC connection recovery request message or RRC recovery request message sent by the terminal device, the DU sends the request message to the CU through an initial uplink RRC message transmission (initial UL RRC message transfer) message;
  • the CU sends a UE context establishment request (UE context setup request) message to the DU, where the request message includes information such as the bearer that needs to be established;
  • the DU sends a UE context establishment response (UE context setup response) message to the CU to inform the CU that it has successfully established the bearer;
  • UE context setup response UE context setup response
  • the CU sends a DL RRC message transfer (DL RRC message transfer) message to the DU, which includes the RRC message transmitted in step 8;
  • the DU sends an RRC connection recovery request message or an RRC connection request message message to the terminal device, which is used to put the terminal device into the connected state; or an RRC reject (RRC reject) message, indicating that the terminal device access is not successful, and the terminal device receives After the message is still in the Inactive state); or RRC setup (RRC Setup message), the CU does not have the context of the terminal device, but the terminal device can still switch to the connected state after receiving the message); or RRC release (RRC release ) Message, if the message includes the suspend configuration message at this time, the terminal device is in the inactive state, otherwise the terminal device switches to the idle state;
  • the terminal device sends an RRC resume/setup complete (RRC resume/setup complete) message to the DU to reply to the message in step 8;
  • the DU sends an uplink RRC message (UL RRC message transfer) message to the CU.
  • the bearer establishment is completed, the terminal device enters the connected state, and can perform data transmission with the network device.
  • the terminal device needs to go through the above 10 steps to switch to the connected state, that is, the terminal device can perform data transmission after step (10).
  • the above process can also be applied to the scenario where inactive initiates the RRC recovery process in a new DU.
  • the present application proposes a communication method, which can reduce the signaling overhead of the terminal device in the inactive state during data transmission, reduce the delay of data transmission, and improve the efficiency of system data transmission.
  • FIG. 5 shows a schematic flowchart of a communication method 500 according to an embodiment of the present application. As shown in FIG. 5, the communication method 500 includes:
  • the terminal device sends data to the DU in the deactivated state.
  • the data may correspond to a certain data radio bearer (data radio bearer, DRB).
  • DRB data radio bearer
  • the terminal in the deactivated state can retain the configuration information of three DRBs DRB#1, DRB#2 and DRB#3. If the data sent by the user is the data of DRB#1, the configuration of DRB#1 can be used to send data.
  • the terminal device may send the data to the DU through an RRC connection recovery request message or an RRC recovery request message in an inactive state.
  • the DU determines the first information corresponding to the data, and the first information corresponds to the DRB.
  • the first information may include at least one of the following: a logical channel identification (LCID) corresponding to the data, address information, or a network slice identification corresponding to the data, wherein the address
  • the information includes at least one of the following: uplink data transmission address information corresponding to the data radio bearer identifier, uplink data transmission address information corresponding to the logical channel identifier, or uplink data transmission address information corresponding to the network slice identifier.
  • LCID logical channel identification
  • the first information may be an LCID or a network slice identifier.
  • the determination of the first information corresponding to the data by the DU means that the DU can determine the LCID or network slice identifier corresponding to the data through the MAC layer.
  • the first information corresponds to the DRB, and may refer to that the CU determines the corresponding DRB according to the first information, for example, the corresponding DRB identifier may be determined.
  • the CU may determine a DRB identifier of the terminal device according to the logical channel identifier corresponding to the data packet; or, if The data includes a plurality of data packets, and the plurality of data packets respectively correspond to a plurality of different logical channel identifiers, and then the CU may determine the one according to one of the plurality of different logical channel identifiers A DRB identifier of the terminal device; or, if the multiple data packets correspond to a logical channel identifier, the CU may determine a DRB identifier of the terminal device according to the logical channel identifier.
  • the DU may determine the first information corresponding to the data in the MAC layer.
  • the first information may be a logical channel identifier.
  • the DU sends the first information to the CU.
  • the DU may send the first information to the CU through a first message.
  • the first message may be an initial uplink RRC message transmission (initial UL RRC message transfer), or the first message may also be other messages, which is not limited in this application.
  • the first message may also include the data.
  • the DU may send the first information and the data to the CU simultaneously through a first message, for example, the DU may send the first information to the CU simultaneously through the same initial uplink RRC message And the data; the DU can also send only the first information to the CU in one message, and send the data to the CU in another message, for example, the DU can pass an initial An uplink RRC message simultaneously sends the first information to the CU, and sends the data to the CU in another initial uplink RRC message or other messages.
  • the data list indicates that the DU may send one or more data packets in the first message, and the data packets may be carried in the first message in the form of a container. It is understandable that the data list is just a name, and it can be other names.
  • the LCID may be a logical channel identifier, indicating the logical channel identifier corresponding to the data packet, and the CU may correspond the data packet to the corresponding DRB through the LCID, and then use the PDCP layer protocol stack and SDAP layer protocol stack corresponding to the bearer to the data packet Be processed.
  • Data may be data sent by the terminal to the DU in S510, and the data here may be one data packet or multiple data packets. It can be understood that each LCID may correspond to multiple data packets, or may correspond to one data packet.
  • the CU determines the DRB corresponding to the data according to the first information.
  • the CU may use the PDCP layer protocol stack and the SDAP layer protocol stack corresponding to the bearer to process the data.
  • the CU may correspond the data packet to a corresponding DRB through a logical channel identifier, and then use the PDCP layer protocol stack and SDAP layer protocol stack corresponding to the DRB to process the data packet.
  • the CU sends an RRC message to the DU.
  • the RRC message may be an RRC connection release (RRC connection release) message or an RRC release (RRC release) message.
  • the RRC message may be an RRC connection resume (RRC connection resume) message or an RRC resume (RRC resume) message.
  • the DU sends the RRC message to the terminal device.
  • the RRC message may be an RRC connection release message or an RRC release message.
  • the network side can put the terminal device into a deactivated state or an idle state.
  • the RRC message may be an RRC connection recovery message or an RRC recovery message.
  • the network side can put the terminal device into a connected state.
  • the distributed unit receives the data sent by the terminal device in the deactivated state, determines the first information corresponding to the data, and sends the first information to the central unit, the The central unit may determine the data radio bearer corresponding to the data according to the first information, and process the data according to the protocol stack corresponding to the data radio bearer. Therefore, the terminal device does not need to switch from the inactive state to the connected state. Data can be transmitted, which can reduce the signaling overhead of the terminal equipment in the inactive state during data transmission, reduce the delay of data transmission, and improve the efficiency of system data transmission.
  • FIG. 6 shows a schematic flowchart of a communication method 600 according to another embodiment of the present application. As shown in FIG. 6, the communication method 600 includes:
  • the CU sends the second information to the DU.
  • the CU may send the second information to the DU through a UE context release command (UE context release command) message.
  • UE context release command UE context release command
  • the second information may be used to indicate the correspondence between the logical channel identifier and the address information, the DRB identifier and the address information, or the network slice identifier and the address information.
  • the second information may also be used to indicate the correspondence between other identifiers and the address information.
  • the second information may be used to indicate address information, which is not limited in this application.
  • the address information may refer to address information for transmitting uplink data corresponding to the logical channel, the DRB, or the network slice.
  • different logical channels, DRBs or network slices can correspond to different addresses.
  • the address information may include a transport layer address (transport layer address).
  • the address information may include a GPRS tunneling protocol (GPRS tunneling protocol, GTP) tunnel port identifier (tunnel endpoint identifier, TEID).
  • GTP GPRS tunneling protocol
  • TEID tunnel port identifier
  • the data may be a data packet
  • the network slice identifier corresponding to the data packet may correspond to an address information.
  • the data may include multiple data packets, and the multiple data packets respectively correspond to multiple different network slice identifiers, and the multiple different network slice identifiers may respectively correspond to different address information.
  • the multiple data packets may correspond to a network slice identifier, and the network slice identifier may correspond to address information.
  • the DU may establish an uplink data plane tunnel through the second message.
  • the terminal device sends data to the DU in the deactivated state.
  • the terminal device may send the data to the DU through an RRC connection recovery request message or an RRC recovery request message in an inactive state.
  • the DU determines the address information corresponding to the data. Specifically, the DU may determine the address information corresponding to the data according to the second information.
  • the DU may determine a logical channel identifier, a DRB identifier, or a network slice identifier corresponding to the data, and according to the correspondence between the logical channel identifier, the DRB identifier, or the network slice identifier, and the second information , Determine the uplink data transmission address information corresponding to the logical channel, the DRB, or the network slice.
  • the uplink data transmission address information may be address information of an uplink data plane tunnel corresponding to the data.
  • the DU may send data to the CU in the data plane tunnel corresponding to the address information.
  • the DU sends the data in the data plane tunnel.
  • the DU may send the data and the address information.
  • the DU may add address information of an upstream data plane tunnel corresponding to the data packet to the data packet.
  • the CU can receive the data, and determine the logical channel ID, DRB ID, or network slice ID corresponding to the data packet according to the address information in the data packet, and use the logical channel ID, the DRB ID Or the protocol stack corresponding to the network slice identifier processes the data packet.
  • the central unit sends the second information to the distributed unit through a UE context release command message, and the distributed unit determines the location based on the correspondence in the second information.
  • FIG. 7 shows a schematic flowchart of a communication method 700 according to another embodiment of the present application. As shown in FIG. 7, the communication method 700 includes:
  • the DU sends an interface setup request (F1 setup request) message to the CU.
  • the CU sends second information to the DU.
  • the CU sends the second information to the DU through an interface setup response (F1 setup response) message.
  • F1 setup response interface setup response
  • the second information may be used to indicate the correspondence between the logical channel identifier and the address information, the DRB identifier and the address information, or the network slice identifier and the address information.
  • the second information may also be used to indicate the correspondence between other identifiers and the address information.
  • the second information may be used to indicate address information, which is not limited in this application.
  • the CU may establish a tunnel through the second message.
  • the DU may establish an uplink data plane tunnel through the second message.
  • the terminal device sends data to the DU in the deactivated state.
  • the terminal device may send the data to the DU through an RRC connection recovery request message or an RRC recovery request message in an inactive state.
  • the DU determines the address information corresponding to the data. Specifically, the DU may determine the address information corresponding to the data according to the second information.
  • the DU may send data to the CU in the data plane tunnel corresponding to the address information.
  • the DU sends the data in the data plane tunnel.
  • the DU may send the data and the address information.
  • S730, S740, and S750 reference may be made to S620, S630, and S640 in FIG. 6, which will not be repeated here.
  • the central unit sends the second information to the distributed unit through an interface establishment reply message, and the distributed unit determines the second information according to the correspondence in the second information Address information, and send data to the central unit in the data plane tunnel corresponding to the address information according to the address information without having to switch to the connected state before transmitting the data, therefore, signaling in the data transmission process can be reduced Overhead and transmission delay improve the efficiency of system data transmission.
  • FIG. 8 shows a schematic flowchart of a communication method 800 according to another embodiment of the present application. As shown in FIG. 8, the communication method 800 includes:
  • the terminal device sends data to the DU in the deactivated state.
  • the terminal device may send data to the DU through an RRC connection recovery request (RRC connection resume request) message in the inactive state, or the terminal device may send the data together with an RRC connection recovery request message Sent to the DU.
  • RRC connection recovery request RRC connection resume request
  • the DU determines first information corresponding to the data, and the first information corresponds to the DRB.
  • the first information may include at least one of the following: a logical channel identifier corresponding to the data, or a network slice identifier corresponding to the data.
  • the data may include a data packet, and the data packet corresponds to the logical channel identifier or the network slice identifier.
  • the data includes multiple data packets, and the multiple data packets may respectively correspond to different logical channel identifiers or different network slice identifiers. Alternatively, the multiple data packets may correspond to one of the logical channel identifier or the network slice identifier.
  • the DU may determine the first information corresponding to the data in the MAC layer.
  • the first information may be a logical channel identifier, and at this time, the DU may correspond the data to the logical channel identifier.
  • the logical channel identifier corresponding to the data packet may correspond to a DRB identifier; or, if the data includes multiple data packets, the multiple data packets respectively correspond to multiple different
  • the multiple different logical channel identifiers may correspond to different DRB identifiers respectively; or, if the multiple data packets correspond to a logical channel identifier, the logical channel identifier may correspond to a DRB identifier.
  • the DU sends the first information to the CU.
  • the DU may send the first information to the CU through an initial uplink RRC message transmission (initial UL RRC message transfer) message.
  • the CU may determine the logical channel identifier corresponding to the data according to the first information, so as to determine the bearer to be established according to the DRB identifier corresponding to the logical channel identifier.
  • the LCID list corresponding to the DRB to be established is as follows, one possible form is:
  • the CU sends third information to the DU, where the third information is used to instruct the DU to establish the DRB.
  • the CU may also send third information to the DU through a UE context establishment request (UE context setup request) message, where the third information is used to instruct the DU to establish the location where the first information association is established. ⁇ Bearing.
  • UE context setup request UE context setup request
  • the bearer context modification request message may also carry indication information, which is used to indicate that the DU does not need to activate the context to make the terminal device enter the connected state, which can avoid the DU from the terminal device
  • indication information which is used to indicate that the DU does not need to activate the context to make the terminal device enter the connected state, which can avoid the DU from the terminal device
  • the recovery process of the protocol stack can save system resources.
  • the indication information may instruct the terminal device to transmit small data packets.
  • the terminal device since the terminal device transmits a small data packet, the DU does not need to activate a context to make the terminal device enter a connected state.
  • the CU only needs to ask the DU to establish the data radio bearer corresponding to the first information in step S830.
  • the CU may reserve the configuration of carrying the DRB#1, DRB#2, DRB#3, DRB#4 for the terminal device in the deactivated state.
  • the DU sends the first One message only corresponds to bearer DRB#1 and DRB#2, that is, the current terminal only needs to send data corresponding to DRB#1 and DRB#2, then the CU may only request the DU to establish DRB#1 and DRB# in this step 2 corresponding bearers, without the need to establish DRB#3 and DRB#4 corresponding bearers. This can reduce the number of bearer establishments, reduce the bearer establishment delay, and avoid the establishment of invalid bearers, thereby saving resource overhead.
  • the DU sends a UE context setup response (UE context setup response) message to the CU.
  • the UE context setup response message is used to notify the CU that it has successfully established a bearer.
  • the DU may only establish the bearer corresponding to the data.
  • the data may include a data packet corresponding to the logical channel identifier or the network slice identifier.
  • the DU may only need to establish a bearer corresponding to the logical channel identifier, or The DU may only need to establish a bearer corresponding to the network slice identifier.
  • the data may include multiple data packets, and the multiple data packets may respectively correspond to different logical channel identifiers or different network slice identifiers.
  • the DU may only establish The bearer corresponding to the logical channel identifier corresponding to the multiple data packets, or the DU may establish only the bearer corresponding to the network slice identifier.
  • the data may include multiple data packets, and the multiple data packets may correspond to one of the logical channel identifier or the network slice identifier.
  • the DU may only establish correspondence with the logical channel identifier Or the DU may establish only the bearer corresponding to the network slice identifier.
  • the first information in step S830 may include LCID#1, LCID#2, and LCID#3, where LCID#1 corresponds to bearer DRB#1, LCID#2 corresponds to bearer DRB#2, and LCID#3 corresponds to Carrying DRB#3, the DU may only be able to successfully establish DRB#1 and DRB#2 due to reasons such as limited DU resources. Of course, the DU may also establish all bearers DRB#1, DRB#2 and DRB#3.
  • the DU sends uplink data to the CU.
  • the DU can only send data corresponding to the successfully established bearer.
  • the terminal device sends LCID#1, LCID#2, and LCID#3 data to the DU, where LCID#1 corresponds to DRB#1, LCID#2 corresponds to DRB#2, and LCID#3 corresponds to DRB#3, if The DU can only successfully establish DRB#1 and DRB#2, then in this step, the DU can only send data corresponding to DRB#1 and data corresponding to DRB#2 to the CU.
  • the CU sends a downlink RRC message transfer (DL RRC message transfer) message to the DU.
  • DL RRC message transfer downlink RRC message transfer
  • the downlink RRC message transmission message may include an RRC release (RRC release) message.
  • RRC release RRC release
  • the DU may send an RRC release message to the terminal device.
  • the RRC release message may include a suspend configuration message.
  • the terminal device receives the RRC release message, it is in an inactive state; otherwise, the terminal device switches to the idle state.
  • the distributed unit receives the third information sent by the central unit, and the distributed unit may establish only the data radio bearer corresponding to the first information according to the third information Without establishing other data radio bearers, it can reduce the signaling overhead and delay of establishing data radio bearers, thereby reducing the signaling overhead and delay in the data transmission process, and improving the efficiency of system data transmission.
  • FIG. 9 shows a schematic flowchart of a communication method 900 according to another embodiment of the present application.
  • the communication method 900 includes:
  • the CU-CP sends a bearer context modification request (bearer context modification request) message to the CU-UP.
  • the CU-UP sends second information to the CU-CP.
  • the second information may be used to indicate the correspondence between the data radio bearer identifier and the address information, or the correspondence between the logical channel identifier and the address information, or the network slice identifier and the Correspondence of address information.
  • the CU-UP sends the second information to the CU-CP through a bearer context modification reply (bearer context modification) response message.
  • bearer context modification reply bearer context modification
  • the CU-CP sends the second information to the DU.
  • the second information may be used to indicate at least one of the following: the correspondence between the data radio bearer identifier and the address information, the correspondence between the logical channel identifier and the address information, or the network slice The correspondence between the identifier and the address information.
  • the CU-CP may establish a common data plane tunnel in a UE context release command (UE context release command) message.
  • UE context release command UE context release command
  • the CU-CP sends the second information to the DU through a UE context release command message.
  • the DU sends an RRC connection release message to the terminal device.
  • the RRC release message may include a suspend configuration message.
  • the terminal device receives the RRC connection release message, it is in an inactive state; otherwise, the terminal device switches to the idle state.
  • the terminal device sends data to the DU in the deactivated state.
  • the terminal device may send the data to the DU through an RRC connection resume request (RRC connection resume) message in the inactive state.
  • RRC connection resume RRC connection resume
  • the DU determines first information corresponding to the data, and the first information corresponds to the DRB.
  • the DU may determine the first information according to the second information, and the first information is associated with the bearer.
  • the DU may determine the address information according to the correspondence in the second information.
  • the correspondence includes the correspondence between the data radio bearer identifier and the address information, the correspondence between the logical channel identifier and the address information, or the correspondence between the network slice identifier and the address information At least one item.
  • the data plane tunnel may be the data plane tunnel established in S930.
  • the DU may send the first information and the data to the CU-CP.
  • the DU may send the address information and the data determined in S960 to the CU-CP.
  • the CU-CP sends the second information to the DU
  • the distributed unit determines the address information according to the correspondence in the second information, and according to the The address information sends data to the central unit in the data plane tunnel corresponding to the address information without having to switch to the connected state before transmitting the data. Therefore, signaling overhead and transmission delay during data transmission can be reduced, Improve the efficiency of system data transmission.
  • FIG. 10 shows a schematic flowchart of a communication method 1000 according to an embodiment of the present application. As shown in FIG. 10, the communication method 1000 includes:
  • the terminal device sends data to the DU in the deactivated state.
  • the terminal device may send data to the DU in an RRC connection recovery request (RRC connection resume) request message.
  • RRC connection recovery request RRC connection resume
  • the DU determines first information corresponding to the data, and the first information corresponds to the DRB.
  • the first information may include at least one of the following: a logical channel identifier corresponding to the data, address information, or a network slice identifier corresponding to the data, where the address information includes at least one of the following: Uplink data transmission address information corresponding to the data radio bearer identifier, uplink data transmission address information corresponding to the logical channel identifier, or uplink data transmission address information corresponding to the network slice identifier.
  • the CU may determine a DRB identifier of the terminal device according to the logical channel identifier corresponding to the data packet; or, if The data includes a plurality of data packets, and the plurality of data packets respectively correspond to a plurality of different logical channel identifiers, and then the CU may determine the one according to one of the plurality of different logical channel identifiers A DRB identifier of the terminal device; or, if the multiple data packets correspond to a logical channel identifier, the CU may determine a DRB identifier of the terminal device according to the logical channel identifier.
  • the DU may determine the first information corresponding to the data in the MAC layer.
  • the first information may be a logical channel identifier.
  • the DU may send the first information to the CU-CP.
  • the DU may send the first information to the CU-CP through an initial uplink RRC message transmission (initial UL RRC message transfer) message.
  • the DU may send the first information and the data to the CU-CP.
  • the DU may send the data to the CU-CP before sending the first information to the CU-CP.
  • the DU may send the data to the CU-CP after sending the first information to the CU-CP.
  • the CU-CP determines a bearer corresponding to the data according to the first information.
  • the CU-CP sends first information to the CU-UP, where the first information corresponds to the DRB.
  • the first information may be a logical channel identifier, a DRB identifier, or a network slice identifier corresponding to the data.
  • the data may include a data packet, and the data packet corresponds to a bearer.
  • the first information may be a logical channel identifier, a DRB identifier, or a network slice identifier corresponding to the data packet.
  • the data may include multiple data packets, and the multiple data packets may respectively correspond to different bearers.
  • the first information may include logical channel identifiers and DRBs corresponding to the multiple data packets. logo or network slice logo.
  • the data may include multiple data packets, and the multiple data packets may correspond to a bearer.
  • the first information may be a logical channel identifier, a DRB identifier, or a network slice corresponding to multiple data packets. logo.
  • the CU-CP may send the first information through a bearer context modification request (bearer context modification request) message. Accordingly, the CU-UP receives the first information through the bearer context modification request message.
  • bearer context modification request bearer context modification request
  • the bearer context modification request message may also carry indication information, which is used to indicate that the CU-CP does not need to activate the context to make the terminal device enter the connected state, which can avoid the CU-UP pair
  • the recovery process of the protocol stack of the terminal device can save system resources.
  • the indication information may instruct the terminal device to transmit small data packets.
  • the terminal device since the terminal device transmits a small data packet, the DU does not need to activate a context to make the terminal device enter a connected state.
  • the CU-UP may determine a bearer corresponding to the data according to the first information, and process the data according to PDCP and SDAP corresponding to the bearer.
  • the CU-CP may send the data and the first information to the CU-UP.
  • the data corresponding to the first information For example, the data corresponding to the first information
  • the first information (logical channel ID, DRB ID or network slice ID)
  • the first information may include the data and the corresponding logical channel identifier, DRB identifier, or network slice identifier
  • the CU-UP may use the logical channel identifier, the DRB identifier, or the network slice Identify the data packet corresponding to the corresponding DRB, and then use the PDCP layer protocol stack and SDAP layer protocol stack corresponding to the DRB to process the data packet.
  • the first information may be address information allocated by the CU-UP to the bearer corresponding to the first information, such as a data identifier.
  • the CU-CP can add the address information to the header of the data, and the CU-UP determines the bearer information corresponding to the data according to the address information, and then uses the PDCP layer protocol stack corresponding to the DRB and The SDAP layer protocol stack processes the data packet.
  • the CU-UP sends a bearer context modification response (bearer context modification response) message to the CU-CP.
  • the CU-CP sends an RRC message to the DU.
  • the RRC message may be an RRC connection release (RRC connection release) message or an RRC release (RRC release) message.
  • the RRC message may be an RRC connection resume (RRC connection resume) message or an RRC resume (RRC resume) message.
  • the DU sends the RRC message to the terminal device.
  • the RRC message may be an RRC connection release message or an RRC release message.
  • the network side can put the terminal device into a deactivated state or an idle state.
  • the RRC message may be an RRC connection recovery message or an RRC recovery message.
  • the network side can put the terminal device into a connected state.
  • the CU-CP sends first information to the CU-UP
  • the CU-UP may determine the data radio bearer corresponding to the data according to the first information, and according to The protocol stack corresponding to the data wireless bearer processes the data. Therefore, the terminal device can transmit data without switching from the inactive state to the connected state, thereby reducing signaling in the data transmission process of the terminal device in the inactive state. Overhead, reduce the delay of data transmission, and improve the efficiency of system data transmission.
  • FIG. 11 is a schematic block diagram of a communication device 1100 according to an embodiment of the present application. It should be understood that the communication device 1100 is only an example. The communication device according to the embodiment of the present application may further include other modules or units, or include modules with similar functions to the modules in FIG. 11, or not necessarily include all modules in FIG. 11.
  • the receiving module 1110 is configured to receive data sent by the terminal device in a deactivated state, where the data corresponds to the data wireless bearer;
  • the processing module 1120 is configured to determine first information corresponding to the data, and the first information is associated with the bearer;
  • the sending module 1130 is configured to send the first information to the central unit.
  • the first information includes at least one of the following: a logical channel identifier corresponding to the data, address information, or a network slice identifier corresponding to the data, wherein the address information includes at least one of the following: data Uplink data transmission address information corresponding to the wireless bearer identifier, uplink data transmission address information corresponding to the logical channel identifier, or uplink data transmission address information corresponding to the network slice identifier.
  • the sending module 1130 is specifically configured to send the first information to the central unit through an initial uplink radio resource control message transmission message.
  • the receiving module 1110 is further configured to: receive second information sent by the central unit, where the second information is used to indicate at least one of the following: correspondence between the data radio bearer identifier and the address information Relationship, correspondence between the logical channel identifier and the address information, or correspondence between the network slice identifier and the address information.
  • the processing module 1120 is specifically configured to determine the address information according to the correspondence.
  • the receiving module 1110 is specifically configured to receive the second information sent by the central unit through an interface establishment reply message or a context release command message.
  • the sending module 1130 is specifically configured to send the first information and the data to the central unit.
  • the receiving module 1110 is further configured to: receive third information sent by the central unit through a context establishment request message, where the third information is used to instruct the distributed unit to establish the data radio bearer.
  • FIG. 12 is a schematic block diagram of a communication device 1200 according to an embodiment of the present application. It should be understood that the communication device 1200 is only an example. The communication device in the embodiment of the present application may further include other modules or units, or include modules with similar functions to the modules in FIG. 12, or not necessarily include all modules in FIG.
  • the receiving module 1210 is configured to receive the first information sent by the distributed unit
  • the processing module 1220 is configured to determine the data radio bearer corresponding to the first information according to the first information
  • the receiving module 1210 is configured to receive data sent by the terminal device from the distributed unit in a deactivated state.
  • the first information includes at least one of the following: a logical channel identifier corresponding to the data, address information, and a network slice identifier corresponding to the data, wherein the address information includes at least one of the following: data wireless Uplink data transmission address information corresponding to the bearer identifier, uplink data transmission address information corresponding to the logical channel identifier, or uplink data transmission address information corresponding to the network slice identifier.
  • the receiving module 1210 is specifically configured to: receive the first information sent by the distributed unit through an initial uplink radio resource control message transmission message.
  • the communication device further includes a sending module 1230, configured to send second information to the distributed unit, where the second information is used to indicate at least one of the following: the data radio bearer identifier and the The correspondence between the address information, or the correspondence between the logical channel identifier and the address information, or the correspondence between the network slice identifier and the address information.
  • a sending module 1230 configured to send second information to the distributed unit, where the second information is used to indicate at least one of the following: the data radio bearer identifier and the The correspondence between the address information, or the correspondence between the logical channel identifier and the address information, or the correspondence between the network slice identifier and the address information.
  • the sending module 1230 is specifically configured to send the second information to the distributed unit through an interface establishment reply message or a context release command message.
  • the receiving module 1210 is specifically configured to: receive the first information and the data sent by the distributed unit.
  • the sending module 1230 is further configured to send third information to the distributed unit through a context establishment request message, where the third information is used to instruct the distributed unit to establish the data radio bearer.
  • the communication device 1200 includes CU-UP and CU-CP.
  • the sending module 1230 belongs to the CU-UP, and the sending module 1230 is further configured to: send the second information to the CU-CP by the CU-UP.
  • the sending module 1230 belongs to the CU-CP, and the sending module 1230 is further configured to: the CU-CP sends the first information to the CU-UP.
  • FIG. 13 is a schematic structural diagram of a communication device 1300 according to an embodiment of the present application. It should be understood that the communication device 1300 shown in FIG. 13 is only an example, and the communication device 1300 in the embodiment of the present application may further include other modules or units, or include modules having similar functions as the modules in FIG. 13.
  • the communication device 1300 may include one or more processors 1310, one or more memories 1320, a receiver 1330, and a transmitter 1340.
  • the receiver 1330 and the transmitter 1340 may be integrated together, called a transceiver.
  • the memory 1320 is used to store program codes executed by the processor 1310.
  • the processor 1310 may be integrated with a memory 1320, or the processor 1310 is coupled to one or more memories 1320 for retrieving instructions in the memory 1320.
  • the processor 1310 may be used to implement the operations or steps that the processing module 1120 in FIG. 11 can implement
  • the receiver 1330 may be used to implement the operations or steps that the receiving module 1110 in FIG. 11 can implement
  • 1340 may be used to implement operations or steps that can be implemented by the sending module 1130 in FIG.
  • the processor 1310 may be used to implement operations or steps that can be implemented by the processing module 1220 in FIG. 12, and the receiver 1330 may be used to implement operations or steps that can be implemented by the receiving module 1210 in FIG. 12.
  • the device 1340 may be used to implement operations or steps that can be implemented by the sending module 1230 in FIG.
  • the processor in the embodiments of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and application specific integrated circuits (application specific integrated circuit, ASIC), ready-made programmable gate array (field programmable gate array, FPGA) 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 be any conventional processor or the like.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electronically Erasable programmable read only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (random access memory, RAM), which is used as an external cache.
  • random access memory random access memory
  • static random access memory static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access Access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • double data Srate double data Srate
  • DDR SDRAM enhanced synchronous dynamic random access memory
  • ESDRAM synchronous connection dynamic random access memory Take memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).
  • the above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination.
  • the above-described embodiments may be implemented in whole or in part in the form of computer program products.
  • the computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general-purpose computer, a dedicated 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, for example, the computer instructions may be from a website site, computer, server or data center Transmit to another website, computer, server or data center by wired (such as infrared, wireless, microwave, etc.).
  • 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 data center that contains one or more collections 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.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program codes .

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Abstract

La présente invention concerne un procédé de communication et un appareil de communication. Ledit procédé comprend les étapes suivantes: une unité distribuée (DU) reçoit des données envoyées par un dispositif terminal dans un état inactif; la DU détermine des premières informations correspondant aux données, les premières informations correspondant à une porteuse radio de données; et La DU envoie les premières informations à une unité centrale. Le procédé décrit dans les modes de réalisation de la présente invention réduit le surdébit de signalisation d'un dispositif terminal dans un état inactif pendant une transmission de données, et réduit le retard de transmission de données, améliorant ainsi l'efficacité de transmission des données du système.
PCT/CN2019/122966 2018-12-10 2019-12-04 Procédé de communication et appareil de communication WO2020119546A1 (fr)

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