WO2014082270A1 - 一种数据传输的控制方法、装置及系统 - Google Patents

一种数据传输的控制方法、装置及系统 Download PDF

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Publication number
WO2014082270A1
WO2014082270A1 PCT/CN2012/085584 CN2012085584W WO2014082270A1 WO 2014082270 A1 WO2014082270 A1 WO 2014082270A1 CN 2012085584 W CN2012085584 W CN 2012085584W WO 2014082270 A1 WO2014082270 A1 WO 2014082270A1
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WO
WIPO (PCT)
Prior art keywords
base station
wireless communication
status report
communication node
rlc sdu
Prior art date
Application number
PCT/CN2012/085584
Other languages
English (en)
French (fr)
Inventor
赵超
蔺波
张涛
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201280018280.8A priority Critical patent/CN103975613B/zh
Priority to EP18198498.0A priority patent/EP3490291B1/en
Priority to KR1020157017162A priority patent/KR101667507B1/ko
Priority to CN201810221037.5A priority patent/CN108551681B/zh
Priority to EP12889299.9A priority patent/EP2916572B1/en
Priority to PCT/CN2012/085584 priority patent/WO2014082270A1/zh
Publication of WO2014082270A1 publication Critical patent/WO2014082270A1/zh
Priority to US14/725,091 priority patent/US9949194B2/en
Priority to US15/909,690 priority patent/US10440624B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/16Performing reselection for specific purposes
    • H04W36/22Performing reselection for specific purposes for handling the traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/06Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H04W28/065Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035Resource allocation in a cooperative multipoint environment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/11Allocation or use of connection identifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, device and system for controlling data transmission.
  • the demand for the network by the UE is increasing, which brings huge services to the network base station. Especially in the hotspot area and indoor communication, the operator needs to continuously maintain the base station with large coverage and high transmission power. In order to ensure the smooth running and operation of the services required by each UE.
  • the heterogeneous network is proposed to meet the hotspot area and indoor communication requirements in the LTE-Advanced (Long Term Evolution-Advanced) communication system.
  • the main implementation method is to introduce some coverage in the traditional network structure.
  • the base station with the smaller transmit power forms a small cell, and is placed in the service hotspot area or the coverage hole area. In this way, the UE moves to these areas, that is, the service can be switched to these small cells to achieve service offload or make up for coverage.
  • the RRH Remote Radio Head
  • the base station is centralized.
  • the UE is scheduled to allow multiple transmission points, such as a base station, one or more RRHs, to cooperate with the UE to transmit data to improve throughput.
  • due to the high cost of the fiber deployment backhaul network it is not conducive to operational use. Therefore, it is necessary to explore a new network architecture that can effectively improve UE throughput when using a non-fiber backhaul network.
  • the present invention provides a data transmission control method, apparatus, and system, which can ensure inter-layer interaction between a packet data convergence protocol layer and a radio link control layer between different devices, thereby ensuring data transmission requirements, thereby improving UE throughput.
  • a method for controlling data transmission comprising: receiving, by a wireless communication node, a data packet sent by a base station, where the data packet is used Generating, by the base station, a packet data convergence protocol data unit PDCP PDU; the wireless communication node acquiring the PDCP PDU in the data packet as a radio link control service data unit RLC SDU;
  • the wireless communication node sends data generated by using the RLC SDU to the user equipment, where the wireless communication node establishes a user plane connection with the user equipment, and the base station establishes a control plane connection with the user equipment.
  • the method further includes: the wireless communication node starting a first timer, where the first timing of the first timer is performed by the base station or Manage and maintain OAM delivery.
  • the method further includes:
  • the wireless communication node If the wireless communication node does not receive the second status report sent by the user equipment when the first timer expires, the wireless communication node sends a first status report to the base station, where the a status report indicating that the RLC SDU is not successfully sent; the second status report is used to indicate whether the user equipment successfully receives the data generated by using the RLC SDU; or
  • the wireless communication node Before the first timer expires, the wireless communication node receives a second status report sent by the user equipment, where the second status report is used to indicate whether the user equipment successfully receives the use of the The data generated by the RLC SDU;
  • the wireless communication node sends a first status report to the base station, where the first status The report indicates that the RLC SDU was not successfully sent;
  • the wireless communication node does not send the first status report to the base station.
  • the method further includes: the wireless communication node receiving a second status report sent by the user equipment, where the second status report is used to indicate the Whether the user device successfully received the use The data generated by the RLC SDU;
  • the data generated by the SDU the first status report indicates that the PDCP PDU is successfully sent; if the second status report indicates that the user equipment does not successfully receive the data generated by using the RLC SDU, The first status report indicates that the PDCP PDU was not successfully transmitted.
  • the method further includes: receiving a drop message sent by the base station, where the drop message indicates discarding the RLC SDU corresponding to the PDCP PDU;
  • the RLC SDU is discarded according to the received discard message.
  • a method for controlling data transmission comprising: transmitting, by a base station, a data packet to a wireless communication node, the data packet being generated by using a packet data convergence protocol protocol data unit PDCP PDU, so that the wireless communication
  • the node acquires the PDCP PDU in the data packet as a radio link control service data unit RLC SDU, and sends data generated by using the RLC SDU to the user equipment, where the wireless communication node establishes with the user equipment
  • the user plane is connected, and the base station establishes a control plane connection with the user equipment.
  • the method further includes: receiving, by the base station, a first timing time for transmitting, by the base station, the operation management OAM; or
  • the base station generates and sends the first timing time to the wireless communication node, where the first timing time is used for a first timer initiated by the wireless communication node.
  • the method further includes:
  • the base station does not receive the first state report sent by the wireless communication node before the first timer expires, to determine that the RLC SDU is not successfully sent.
  • the method further includes:
  • a first status report sent by the wireless communication node where the first status report is used to indicate whether the PDCP PDU is successfully sent, and the first status report is that the wireless communication node receives the And sent by the second status report sent by the user equipment, where the first status report indicates that the user equipment successfully receives the data generated by using the RLC SDU, the first status report indicates the PDCP The PDU is successfully sent; if the second status report indicates that the user equipment does not successfully receive the data generated by using the RLC SDU, the first status report indicates that the PDCP PDU is not successfully sent;
  • the method further includes: the base station sending a drop message to the wireless communication node, where the drop message indicates to discard the corresponding to the PDCP PDU RLC SDU.
  • the method further includes: the base station sending a second timing time to the wireless communication node, where the second timing time is used by the wireless communication node to activate the second Timer.
  • a wireless communication node in a third aspect, includes: a receiving unit, configured to receive a data packet sent by a base station, where the data packet is a packet data convergence protocol protocol data unit PDCP PDU that uses the base station a control unit, configured to acquire the foregoing in the data packet received by the receiving unit
  • a receiving unit configured to receive a data packet sent by a base station, where the data packet is a packet data convergence protocol protocol data unit PDCP PDU that uses the base station
  • PDCP PDU packet data convergence protocol protocol data unit
  • PDCP PDU as a radio link control service data unit RLC SDU;
  • a sending unit configured to send, to the user equipment, the control unit to use the RLC
  • the user plane is connected, and the base station establishes a control plane connection with the user equipment.
  • the wireless communication node further includes:
  • the first timing unit is configured to start a first timer, where the first timing of the first timer is sent by the base station or the operation management and maintenance OAM.
  • the receiving unit in the wireless communication node, is further configured to receive a second status report sent by the user equipment, where the second status report is used by Instructing the user equipment whether the data generated by using the RLC SDU is successfully received;
  • the sending unit is configured to send a first status report to the base station, where the first status report is used to indicate whether the PDCP PDU is successfully sent, where the second status is received by the receiving unit Reporting that the user equipment successfully receives the data generated by using the RLC SDU, the first status report indicates that the PDCP PDU is successfully sent; if the second status report received by the receiving unit indicates the The user equipment does not successfully receive the data generated by using the RLC SDU, and the first status report indicates that the PDCP PDU is not successfully sent.
  • the receiving unit of the wireless communication node is further configured to receive a drop message sent by the base station, where the drop message indicates that the PDCP PDU is discarded.
  • the drop message indicates that the PDCP PDU is discarded.
  • the control unit is further configured to discard the RLC SDU according to the discard message received by the receiving unit.
  • the wireless communication node further includes:
  • a second timing unit configured to start a second timer, where a second timing time of the second timer is sent by the base station;
  • the control unit is further configured to discard the RLC if the second timer expires
  • a base station where the base station includes:
  • a sending unit configured to send a data packet to the wireless communication node, where the data packet is used Generating a packet data convergence protocol protocol data unit PDCP PDU, such that the wireless communication node acquires the PDCP PDU in the data packet as a radio link control service data unit RLC SDU, and sends the RLC to the user equipment.
  • the data generated by the SDU wherein the wireless communication node establishes a user plane connection with the user equipment, and the base station establishes a control plane connection with the user equipment.
  • the base station further includes: a receiving unit, configured to receive and cause the sending unit to forward the first timing time of the operation management OAM transmission to the wireless communication node; or ,
  • a control unit configured to generate and enable the sending unit to send the first timing time to the wireless communication node, where the first timing time is used by a first timer initiated by the wireless communication node.
  • the receiving unit in the base station, is further configured to receive a first status report sent by the wireless communications node, where the first status report is used to indicate Whether the PDCP PDU is successfully sent, the first status report is sent after the wireless communication node receives the second status report sent by the user equipment, if the second status report indicates that the user equipment successfully receives Using the data generated by the RLC SDU, the first status report indicates that the PDCP PDU is successfully sent; if the second status report indicates that the user equipment has not successfully received the generated using the RLC SDU Data, the first status report indicates that the PDCP PDU is not successfully sent;
  • the control unit is further configured to determine, according to the first status report received by the receiving unit, whether the PDCP PDU is successfully sent.
  • the sending unit in the base station, is further configured to send a drop message to the wireless communication node, where the drop message indicates to drop the PDCP PDU.
  • the drop message indicates to drop the PDCP PDU.
  • the sending unit in the base station, is further configured to send a second timing time to the wireless communication node, where the second timing time is used by the wireless communication node.
  • the second timer that is started. .
  • a wireless communication node configured to include: a receiver, configured to receive a data packet sent by the base station, where the data packet is generated by using a packet data convergence protocol protocol data unit PDCP PDU of the base station, and a processor, configured to acquire, by the receiver, The PDCP PDU in the data packet is used as a radio link control service data unit RLC SDU;
  • a transmitter configured to send data generated by the processor using the RLC SDU to a user equipment, where the wireless communication node establishes a user plane connection with the user equipment, and the base station establishes with the user equipment Control plane connection.
  • the processor in the wireless communication node is further configured to start a first timer, where a first timing time of the first timer is Base station or operation management and maintenance OAM transmission.
  • the wireless communication node is specifically implemented as:
  • the receiver is configured to receive a second status report sent by the user equipment, where the second status report is used to indicate whether the user equipment successfully receives the data generated by using the RLC SDU;
  • the transmitter is further configured to send a first status report to the base station, where the first status report is used to indicate whether the PDCP PDU is successfully sent, where, if the receiver receives the The second status report indicates that the user equipment successfully receives the data generated by using the RLC SDU, the first status report indicates that the PDCP PDU is successfully sent; if the receiver receives the second The status report indicates that the user equipment has not successfully received the data generated by using the RLC SDU, and the first status report indicates that the PDCP PDU is not successfully transmitted.
  • the receiver in the wireless communication node is further configured to receive a drop message sent by the base station, where the drop message indicates that the PDCP PDU is discarded.
  • the drop message indicates that the PDCP PDU is discarded.
  • the processor is further configured to discard the RLC SDU according to the discard message received by the receiver.
  • the processor in the wireless communication node is further configured to start a second timer, where the second timer is The second timing time is sent by the base station;
  • the processor is further configured to discard the RLC if the second timer expires
  • a base station where the base station includes:
  • a transmitter configured to send a data packet to the wireless communication node, where the data packet is generated by using a PDCP data unit PDU, so that the wireless communication node acquires the PDCP PDU in the data packet as a radio link control service Data unit RLC SDU, and transmitting data generated by using the RLC SDU to the user equipment, where the wireless communication node establishes a user plane connection with the user equipment, and the base station establishes a control plane connection with the user equipment.
  • the base station further includes: a receiver, configured to receive and cause the transmitter to forward the first timing time of the operation management OAM transmission to the wireless communication node; or ,
  • a processor configured to generate and cause the transmitter to send the first timing time to the wireless communication node, where the first timing time is used for a first timer that is started by the wireless communication node.
  • the receiver in the base station, is configured to receive a first status report sent by the wireless communication node, where the first status report is used to indicate Whether the PDCP PDU is successfully sent, the first status report is sent by the wireless communication node after receiving the second status report sent by the user equipment, where the second status report indicates that the user equipment successfully receives To the data generated by using the RLC SDU, the first status report indicates that the PDCP PDU is successfully sent; if the second status report indicates that the user equipment does not successfully receive the generated using the RLC SDU Data, the first status report indicates that the PDCP PDU is not successfully sent;
  • the processor is configured to determine, according to the first status report received by the receiver, whether the PDUP PDU is successfully sent.
  • the transmitter in the base station is further configured to send a drop message to the wireless communication node, where the drop message refers to The RLC SDU corresponding to the PDCP PDU is discarded.
  • the transmitter in the base station is further configured to send a second timing time to the wireless communication node, where the second timing time is used by the wireless communication node to start.
  • the second timer is further configured to send a second timing time to the wireless communication node, where the second timing time is used by the wireless communication node to start. The second timer.
  • the wireless communication node receives the data packet sent by the base station, where the data packet is generated by using the packet data convergence protocol protocol data unit of the base station, and then acquires the packet data in the data packet; the C-poly protocol protocol data unit is used as the wireless The link controls the service data unit; and transmits data generated by using the radio link control service data unit to the user equipment.
  • the radio link control layer needs to be set in the base station, that is, it can interact with the packet data convergence protocol layer of the radio communication node, thereby ensuring that the data is in the acknowledge mode or the unacknowledged mode of the base station and the radio communication node convention.
  • the data transmission requirements are implemented according to different mode requirements, and the base station and the wireless communication node multi-point cooperative user equipment to transmit data, thereby improving the throughput of the user equipment.
  • FIG. 1 is a schematic structural diagram of a protocol stack of a base station and a wireless communication node according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for transmitting data on a wireless communication node side according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a method for transmitting data on a wireless communication node side according to another embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a base station side data transmission method according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a data transmission method according to an embodiment of the present invention
  • FIG. 6 is a schematic flowchart of a data transmission method according to another embodiment of the present invention
  • FIG. 7 is a schematic flowchart of a data transmission method according to another embodiment of the present invention
  • FIG. 8 is a schematic flowchart of a data transmission method according to another embodiment of the present invention
  • FIG. 9 is a schematic structural diagram of a wireless communication node according to an embodiment of the present invention
  • FIG. 10 is a schematic structural diagram of a wireless communication node according to another embodiment of the present invention
  • FIG. 11 is a schematic structural diagram of a wireless communication node according to another embodiment of the present invention
  • FIG. 12 is a schematic diagram of a base station according to an embodiment of the present invention; Schematic;
  • FIG. 13 is a schematic structural diagram of a base station according to another embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of another wireless communication node according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of another base station according to an embodiment of the present disclosure;
  • FIG. 16 is a schematic structural diagram of a base station according to another embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of a system according to an embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of a system according to another embodiment of the present invention.
  • the network architecture includes a base station, a wireless communication node (the wireless communication node has a scheduling function), and a UE.
  • UE User Equipment, user equipment
  • a control plane connection with the base station such as an RRC (Radio Resource Control) connection
  • RRC Radio Resource Control
  • the base station transmits data to one or more wireless communication nodes for transmission, so that the wireless communication node can also implement data transmission with the UE, thereby improving the throughput of the UE.
  • the base station may also establish a user plane connection with the UE.
  • the base station may be a macro base station; the wireless communication node has a resource scheduling function, and may be a macro base station, a small base station, a micro base station, a relay station, a home base station, or a TP (Transmission Point) having a scheduling function.
  • TP Transmission Point
  • the data transmission method and device provided by the embodiments of the present invention are applied to the foregoing network architecture to ensure inter-layer interaction between a packet data convergence protocol layer and a radio link control layer between different devices in the network, thereby ensuring data transmission requirements. Improve the throughput of the UE.
  • FIG. 1 shows a schematic diagram of a user plane protocol stack between a terminal, a base station, and a wireless communication node.
  • the interface between the terminal and the base station, and between the terminal and the wireless communication node are all wireless interfaces, such as a Uu interface.
  • the user plane protocol stack of the Uu interface on the base station side includes: L1 layer (physical layer), MAC (Media Access Control) layer, RLC (Radio Link Control) layer, and PDCP (Packet Data Convergence Protocol) layer.
  • L1 layer physical layer
  • MAC Media Access Control
  • RLC Radio Link Control
  • PDCP Packet Data Convergence Protocol
  • the user plane protocol stack of the Uu interface on the wireless communication node side is from the bottom layer to the upper layer, including: L1 layer, MAC layer, and RLC layer.
  • the interface between the base station and the wireless communication node is a wired interface or a wireless interface.
  • the interface of the base station and the wireless communication node is assumed to be an X3 interface, and the user plane protocol stack of the X3 interface includes the L1 layer and the L2 layer from the bottom layer to the upper layer (ie, Data link layer), IP (Internet Protocol) protocol layer, UDP (User Datagram Protocol) layer, and GTP-U (GPRS Tunneling Protocol for the User plane) GPRS Tunneling Protocol) layer.
  • IP Internet Protocol
  • UDP User Datagram Protocol
  • GTP-U GPRS Tunneling Protocol for the User plane
  • the connection between the base station and the wireless communication node only indicates the correspondence between the same protocol layers, instead of the actual connection relationship.
  • the method for controlling data transmission provided by the embodiment of the present invention may be applied to a system including a base station, a wireless communication node, that is, a wireless communication node and a UE. As shown in FIG. 2, the method is a method on a wireless communication node side, and the method is The steps include:
  • the wireless communication node receives a data packet sent by the base station, where the data packet is generated by using a PDCP PDU (Protocol Data Unit) of the base station.
  • PDCP PDU Protocol Data Unit
  • the base station sends the data packet to the wireless communication node, and the wireless communication The signaling node transmits the data packet to the UE.
  • the base station needs to send a PDCP PDU to the wireless communication node, and the wireless communication node needs to send the PDCP PDU to the UE after generating the data packet.
  • the interaction between the base station and the wireless communication node is different from the exchange between the PDCP layer and the RLC layer in the same device, and there is no interface between the PDCP layer of the base station and the RLC layer of the wireless communication node, and direct communication is not possible.
  • the PDCP protocol entity of the base station generates a PDCP PDU, and then encapsulates the PDCP PDU in a transport protocol layer (GPRS tunneling protocol for the user plane, GPRS tunnel at the user plane) Protocol)) in the packet.
  • the base station transmits the data packet to the transport protocol layer of the wireless communication node by using the transport protocol layer tunnel, where the transport protocol layer tunnel is associated with the identifier and the bearer identifier of the user terminal.
  • the PDCP PDU corresponding to the data packet is transmitted to the RL C protocol corresponding to the identifier of the user terminal and the bearer identifier. entity.
  • the manner of interaction between the foregoing base station and the wireless communication node includes but is not limited to the following three types:
  • a transmission tunnel between the base station and the wireless communication node is established for each bearer of each UE in the transport protocol layer (such as GTP-U), and each base station and the wireless communication node
  • the transmission tunnel between the two has a unique transmission tunnel identifier.
  • the UE ID (IDentity) and the bearer identifier are associated with the transport tunnel identifier between the base station and the wireless communication node, and are associated in the tunnel establishment process.
  • a transmission tunnel between one or more base stations and the wireless communication node is established for each UE in a transport protocol layer (such as GTP-U), and a transmission tunnel between each base station and the wireless communication node There is a unique transport tunnel identifier.
  • the correspondence between the UE ID and the transmission tunnel identifier is associated in the tunnel establishment process.
  • an RB (Radio Bearer) identifier is added to the PDU of the transport protocol layer (such as GTP-U) to distinguish data of different bearers transmitted in the same transmission tunnel between the base station and the wireless communication node.
  • a transmission tunnel is established between the base station and the wireless communication node for all UEs at the transport protocol layer (such as GTP-U), each base
  • the transmission tunnel between the station and the wireless communication node has a unique transmission tunnel identity.
  • the UE ID and bearer ID do not correspond to the tunnel ID.
  • the UE ID and the RB identifier are added to the PDU of the transport protocol layer (such as GTP-U), and are used to distinguish data of different bearers of different UEs transmitted in the same transmission tunnel between the base station and the wireless communication node.
  • the wireless communication node acquires a PDCP PDU in the data packet as an RLC SDU.
  • Service Data Unit Service Data Unit
  • the PDCP PDU is generated by the PDCP layer of the base station.
  • the data packet is a transport protocol layer of the base station, such as GTP-U (General Packet Radio Service Tunneling Protocol for the user plane), which is generated by encapsulating the PDCP PDU.
  • GTP-U General Packet Radio Service Tunneling Protocol for the user plane
  • the Evolved-Radio Access Bearer (Evolved-Radio Access Bearer) identifier and the QoS attribute of each E-RAB are used to generate corresponding radio bearers for different bearers of different UEs, including the PDCP protocol entity and the RB corresponding to the PDCP protocol entity. (Radio bear, radio bearer) ID, or LCH (Logical Channel) ID.
  • Radio bear, radio bearer radio bearer ID, or LCH (Logical Channel) ID.
  • the first UE requests to view the video, and after receiving the request from the MME, the base station generates a PDCP entity corresponding to the bearer, where the bearer is 7 bearers corresponding to the video service of the first UE.
  • the wireless communication node receives the configuration of the base station, where the configuration includes the UE ID, the bearer identifier, and the configuration of the RLC layer; and is used to create corresponding radio bearers for different bearers of different user terminals, including the RLC protocol entity and the RLC protocol.
  • the bearer identifier may be an RB ID, an E-RBB ID (E-UTRAN Radio Access Bearer), an EPS Bearer ID (Evolved Packet System Bearer ID), or an LCH. ID.
  • the wireless communication node For example, for the first UE that requests to view the video, the wireless communication node generates a bearer corresponding to the RLC entity, where the bearer is a bearer corresponding to the video service of the first UE (it is required to be described in the wireless communication node) 7 corresponding to the video service of the first UE and the view of the first UE in the base station
  • the frequency service corresponds to the same 7-load).
  • the base station generates a PDCP PDU through the PDCP entity and transmits the PCDP PDU to the transport protocol layer of the base station, so that the transport protocol layer of the base station generates and sends the data packet to the wireless communication node, and then the wireless communication node passes the
  • the RLC entity acquires the PCDP PDU transmitted by the transport protocol layer of the wireless communication node.
  • the wireless communication node sends data generated by using the RLC SDU to the UE.
  • the base station and the UE establish a control plane connection, and the wireless communication node establishes a user plane connection with the UE.
  • the base station and the UE can also establish a control plane connection at the same time.
  • the data generated by using the RLC SDU is the RLC PDU of the wireless communication node.
  • the UE establishes a control plane connection with the base station, and establishes a data plane connection with the wireless communication node.
  • the RLC layer of the wireless communication node may perform splitting and cascading the RLC SDU to form an RLC PDU, or may not perform splitting and cascading, where the cascading is divided. For example, other situations are also within the scope of protection.
  • the wireless communication node divides the RLC SDU into three smaller data packets, and sends the three smaller data packets to the UE as RLC PDUs;
  • the RLC SDU is small, and the wireless communication node can cascade multiple RLC SDUs into one larger data packet, and send the data packet as an RLC PDU to the UE;
  • the wireless communication node uses the RLC SDU as The RLC PDU is sent to the UE.
  • an RLC SDU can be sent to the UE as an RLC PDU.
  • the wireless communication node only needs to provide the PDCP layer, and the base station only needs to provide the RLC layer, so that the interaction between the wireless communication node and the base station can be realized, because the base station and the wireless communication node are multiple points. Cooperating with the UE to transmit data, thus improving the throughput of the UE. Further, in another embodiment, as shown in FIG. 3, after the above step S103 is performed, step S104 and step S105 may be sequentially performed.
  • the wireless communication node receives the second status report sent by the UE, where the second status report is used to indicate whether the UE successfully receives the data generated by using the RLC SDU. It should be noted that, if the wireless communication node receives the second status report sent by the UE as an ACK (Acknowledgement), the second status report is used to indicate that the UE successfully receives the data generated by using the RLC SDU; The second status report sent by the UE is NACK (Negative Acknowledgement), and the second status report is used to indicate that the UE does not successfully receive the data generated by using the RLC SDU, and the wireless communication node retransmits the data generated by using the RLC SDU.
  • ACK Acknowledgement
  • the radio communication node determines that the RLC PDCP is not successfully transmitted, that is, the data generated by using the RLC SDU is not successfully transmitted.
  • the wireless communication node determines that the RLC PDU is not successfully sent.
  • the wireless communication node If the wireless communication node receives the second status report for the RLC PDU sent by the UE as ACK after retransmitting the RLC PDU for the third time, the wireless communication node stops retransmitting the RLC PDU, and considers that the RLC PDU is successfully sent; or The preset time in the wireless communication node is 1 second. If the wireless communication node receives the second status report for one RLC PDU as NACK within 1 second, it is determined that the RLC PDU transmission fails, but no matter how many times are received within 1 second. The NACK for this RLC PDU can be determined to be successfully transmitted as long as the second status report is received as an ACK.
  • the wireless communication node may still determine that the RLC SDU is not successfully sent; if the RLC PDU is It is formed by cascading RLC SDUs. The RLC PDU is not successfully sent, and the wireless communication node determines that multiple cascaded RLC SDUs are not successfully transmitted.
  • the wireless communication node can still determine the RLC.
  • the SDU is successfully sent. If the RLC PDU is formed by the RLC SDU concatenation, the RLC PDU is successfully sent, and the radio communication node determines that the cascaded multiple RLC SDUs are successfully sent.
  • the wireless communication node sends a first status report to the base station.
  • the first status report is used to indicate whether the PDCP PDU is successfully sent. If the second status report indicates that the UE successfully receives the data generated by using the RLC SDU, the first status report indicates that the PDCP PDU is successfully sent; if the second status report indicates The UE does not successfully receive the data generated by using the RLC SDU, and the first status report indicates that the PDCP PDU was not successfully transmitted.
  • the first status report may be sent to the base station according to different rules, where the first status report may indicate whether the RLC SDU is successfully sent, that is, the first status report indication
  • the content of the status report transmission is the identity of the RLC RLC SDU that was successfully sent and/or not successfully transmitted.
  • the first status report may be configured to indicate whether the RLC SDU is successfully sent by setting a first timing time in advance; or may be indicated by an explicit 1 bit in the first status report message body, for example, set in the data string of the first status report. 1 or 0 on a specific bit indicates whether the RLC SDU is successfully sent: if 1 indicates that the content of the status report message transmission is the identifier of the successfully transmitted RLC SDU, the bit is 0 indicating that the content of the first status report transmission is The identifier of the RLC SDU that is not successfully sent; or the content of the first status report transmission may be implicitly indicated by the message name, or may be specified in the protocol, so that the base station receives the first status report message to know the content of the transmission.
  • the first status report may include the following content:
  • the first status report may include only the identifier of the RLC SDU, where the identifier may be the PDCP sequence of the PDCP PDU, and the serial number may be solved by decoding; or the identifier may be the one agreed with the base station.
  • the number of the RLC SDU for example, RLC SDU1, 2, 3, 4, 5 corresponds to 1, 3, 5, 7, and 9 of the PDCP PDU.
  • the PDCP PDU3 may be successfully sent or not successfully transmitted according to whether the RLC SDU2 is successfully sent or not successfully transmitted.
  • the UE ID to which the identity of the RLC SDU belongs and the UE The bearer ID (for example, RB ID, E-RAB ID, EPS Bearer ID, etc.) can be identified by a transmission tunnel between the wireless communication node and the base station, that is, a transport protocol layer (such as GTP-U) for each UE.
  • a transport protocol layer such as GTP-U
  • Each bearer establishes a unique inter-base station transmission tunnel, and each inter-base station transmission tunnel has a unique inter-base station transmission tunnel identifier, a UE ID and a bearer identifier, and a correspondence relationship between the base station and the transmission tunnel identifier, which is associated in the tunnel establishment process. .
  • the tunnel is identified by the transport layer address of the two base stations and the tunnel terminal identifier. It may be assumed that there are two UEs, each UE has two DRBs or E-RABs, and the UE1 DRB 1 or E-RAB 1 A status report is transmitted in tunnel 1, the first status report of DRB2 or E-RAB2 of UE1 is transmitted in tunnel 2; the first status report of DRB 1 or E-RAB 1 of UE2 is transmitted in tunnel 3, and DRB2 of UE2 is either The E-RAB2 first status report is transmitted in the tunnel 4, and the transmission mode is such that the base station receives the first status report and knows the UE to which the identifier in the first status advertisement belongs and the DRB ID of the UE.
  • the first status report status may include a bearer identifier in addition to the foregoing identifier. If the first status report carries the bearer ID, the identifier of the UE indicating the first status report may pass the wireless communication.
  • a transmission tunnel between the node and the base station is identified, that is, a transport protocol layer (such as GTP-U) establishes (one or more) inter-base station transmission tunnels for each UE, and each inter-base station transmission tunnel has a unique inter-base station transmission.
  • the tunnel identifier the correspondence between the UE ID and the transmission tunnel identifier between the base stations, is associated in the tunnel establishment process.
  • each UE has two DRBs or E-RABs, and the first status reports of DRB 1 and DRB2 (or E-RAB 1 and E-RAB2) of UE 1 are transmitted in tunnel 1; UE2's The first status report for DRB 1 and DRB2 (or E-RAB 1 and E-RAB2) is transmitted in Tunnel 2.
  • the base station may explicitly know the UE to which the identifier in the first status report belongs and the DRB ID or E-RAB ID of the UE. Further, the first status report may be transmitted through a control plane interface between the base stations or a transmission tunnel of the inter-base station transmission protocol layer.
  • the first status report is transmitted through the transmission tunnel of the inter-base station transmission protocol layer, in order to distinguish the content of the transmission tunnel transmission of the inter-base station transmission protocol layer.
  • a GTP-U packet encapsulated by a PDCP PDU, or a GTP-U packet encapsulated by a first status report, or a GTP-U packet encapsulated by a drop message Possibly a GTP-U packet encapsulated by a PDCP PDU, or a GTP-U packet encapsulated by a first status report, or a GTP-U packet encapsulated by a drop message
  • a type indication packet header is added to the data packet to indicate the data type of the GTP-U packet transmission.
  • the first status report includes only one identifier of the RLC SDU, in order to reduce the overhead of the first status report message, if the identifier of the RLC SDU is consistent with the identifier of the RLC SDU in the previous first status report, the first A bit position of 1 in the status report indicates that the RLC SDU identity is a continuation of the identity of the RLC SDU in the previous first status report.
  • the first status report includes the identifiers of the plurality of RLC SDUs, in order to reduce the overhead of the first status report message, the first status report includes an identifier of the discontinuous RLC SDU, and an identifier of the smallest or largest RLC SDU of the set of consecutive values, An offset value, where the offset value represents a number of consecutive RLC SDUs in a set of consecutive values, or a number of consecutive RLC SDUs in a set of consecutive values minus one
  • the identifier of the RLC SDU includes an identifier and a bit string of the smallest RLC SDU that is successfully or unsuccessfully transmitted.
  • each bit in each bit string represents the state of the RLC SDU after the smallest RLC SDU successfully or unsuccessfully transmitted. This status is whether the RLC SDU was successfully sent.
  • the wireless communication node may send the first status report to the base station according to different rules, which may be:
  • the wireless communication node triggers the first status report based on the event, that is, if the wireless communication node can detect that the RLC layer determines that the RLC SDU is successful or unsuccessfully transmitted, the first status report is sent to the base station, so that the base station determines the PDCP according to the first status report. The PDU was successfully sent.
  • the wireless communication node may also trigger a status report based on the period, that is, the wireless communication node sets a period, such as 10 seconds, if it is determined that the RLC SDU is successfully sent or not successfully transmitted according to the RLC PDU successfully transmitting the transmission every 10 seconds, then The base station sends a first status report, so that the base station determines the PDCP PDU according to the first status report. Power transmission situation.
  • the wireless communication node may also trigger a status report based on the request, that is, after receiving the request message sent by the base station, the wireless communication node sends a first status report to the base station, so that the base station determines that the PDCP PDU is successfully transmitted according to the first status report.
  • the following preset rules should also be used:
  • the first timed time sent The first timed time sent.
  • the first timing time sets a value for the wireless communication node.
  • the first timing time sent by the base station is received first.
  • the first timing time is set to a value for the wireless communication node; or, when the first timing time is received, the UE ID may be received, indicating that the first timing time may set different or the same value for different UEs; or, receiving the first
  • the UE ID and the DRB ID or the E-RAB ID may also be received at a certain time, indicating that the first timing time may also set different or the same value for different DRBs or E-RABs of different UEs.
  • the wireless communication node maintains a first timer for each RLC SDU of the corresponding UE's DRB ID or E-RAB ID, and the time of the first timer is the first timing time, and the first timer functions at the first During the first time period of the timer maintenance, if the RLC SDU is not successfully sent, the status report is sent to the base station, and the status report is not sent when the RLC SDU is successfully sent.
  • a delay may be generated, and a delay value may be determined according to a specific location of the base station and the wireless communication node, and the first time is updated in the base station by the delay value. Timing time, such as adding twice the data delay time in the preset preset first time.
  • the radio communication node determines the data to be discarded according to the discard message, and discards the data of the AM or UAKM (Unacknowledged Mode). Discard the data.
  • the discard message may include an identifier of the RLC SDU, and the identifier may be
  • the sequence number of the PDCP PDU header sent by the base station to the wireless communication node may also be the code of the RLC SDU agreed with the wireless communication node, such as the RLC SDU 1, 2, 3, 4, 5 corresponding to the PDCP PDU 1, 3, 5, 7, 9 ,
  • the PDCP PDU3 can be successfully sent according to the successful transmission of the RLC SDU2.
  • the content of the discarded message may be: an identifier of the discontinuous RLC SDU, an identifier of the smallest or largest RLC SDU of a set of consecutive values, an offset value, where the offset value represents a consecutive RLC SDU of a set of consecutive values The number / or the number is reduced by one.
  • the discard message may further include a UE ID, a DRB of the UE, or a UE ID and a DRB of the UE; or the drop message may further include a UE ID, an E-RAB ID, or a UE ID and an E-RAB ID, so that The base station determines the UE to which the identity of the RLC SDU belongs and the DRB ID or E-RAB ID of the UE.
  • the transmission method in the discard message is the same as the transmission method in the first status report, and details are not described herein again.
  • the second timing time may be received, or the UE ID and the DRB ID (or E-RAB ID) may be received while receiving the second timing time, and the RLC layer maintains the second timing time by using the second timer.
  • the second timing time may be sent by the base station to the wireless communication node when configuring the wireless communication node or activating the wireless communication node, and the second timing time may set different or the same value for different DRBs or E-RABs of different UEs.
  • the wireless communication node sets a second timer according to the second timing time for each UE and the DRC ID of the UE or the RLC SDU of the E-RAB ID.
  • the time of the second timer is the second timing time. After the data to be discarded is stored for longer than the second time period maintained by the second timer, the wireless communication node discards the corresponding RLC SDU.
  • the wireless communication node only needs to provide the PDCP layer, and the base station only needs to provide the RLC layer, so that the interaction between the wireless communication node and the base station can be implemented, and the interaction can be determined according to the first status report. Whether the data was sent successfully. Therefore, while improving the throughput of the UE, the base station can determine whether the data packet sent to the wireless communication node is successfully transmitted to avoid repeated transmission and the like, thereby improving system performance.
  • the method for controlling the data transmission provided by the embodiment of the present invention may be applied to a system in which a base station, a wireless communication node, and a UE are present. As shown in FIG. 4, the method is a method on the base station side, and the method steps include:
  • the wireless communication node receives a data packet sent by the base station.
  • the UE establishes a data plane connection with the wireless communication node.
  • a control plane connection is established with the base station.
  • the base station sends the PDCP PDU of the PDCP layer to the RLC layer of the radio communication node, it can determine whether the PDCP PDU is successfully sent by receiving the first status report replied by the RLC layer of the radio communication node, and can also determine the PDCP by the following method. Whether the PDU was successfully sent:
  • the base station can receive the first timing of the OAM transmission and send it to the wireless communication node. Or, the base station maintains a first timer for the DRB ID of each UE or the PDCP PDU of the E-RAB ID, where the time of the first timer is the updated first timing time, and the updated first timing time is greater than or equal to The first first timing time, wherein the updated first timing time may be a sum of the first timing time and the deviation value, wherein the deviation value is greater than or equal to twice the delay of the backhaul link between the base station and the wireless communication node, This is mainly to consider the impact of backhaul link delay on packet transmission.
  • the function of the first timer is that, in the first timer, that is, the first time period maintained by the first timer, the base station receives the first status report that the status report type sent by the wireless communication node is unsuccessfully sent. If the identifier of the PDCP PDU is not found, the PDCP PDU is considered to be successfully sent.
  • the base station retransmits the PDCP PDU through the RLC layer of the base station or other wireless communication node.
  • the original base station sends the buffered UE data to the target base station, which can ensure the lossless transmission of the data.
  • the data base station for the acknowledge mode or the non-acknowledgement mode sends a discard message to the wireless communication node.
  • the discard message includes the identifier of the RLC SDU.
  • the base station can also maintain a second timer, that is, a timeout timer, for the PDCP SDU corresponding to each PDCP PDU.
  • the length of the timeout timer is a second time, such as 10 seconds, and more than 10 seconds. Sending a loss to the wireless communication node Discard the message.
  • the second timing time is set for each UE's DRB ID or E-RAB ID.
  • the base station receives a PDCP status report sent by the UE, and the PDCP status report indicates that the PDCP PDU is successfully received.
  • the base station sends a discard message to the wireless communication node, so that the wireless communication node discards the RLC SDU according to the discard message, wherein the content of the discard message is described in the above embodiment, and is not expanded here. In this way, the wireless communication node can release the storage space of the wireless communication node without buffering a large amount of data.
  • the base station can send a second timing time to the wireless communication node.
  • the size of the second timing is the timeout timer of the PDCP SDU corresponding to the PDCP PDU corresponding to the PDCP PDU.
  • the first SDU is discarded after the wireless communication node times out after the second timing time maintained by the second timer. In this way, the wireless communication node can free up the storage space of the wireless communication node without buffering a large amount of data.
  • the wireless communication node receives the data packet sent by the base station, where the data packet is generated by using the PDCP PDU of the base station, and the wireless communication node acquires the PDCP PDU in the data packet as the RLC SDU, and The data generated using the RLC SDU is transmitted to the UE.
  • the RLC layer needs to be set in the base station, that is, it can interact with the PDCP layer of the wireless communication node, thereby ensuring that the data is implemented according to different mode requirements in the confirmation mode of the base station and the wireless communication node convention or in the non-confirmed mode.
  • the transmission requirement of the data and the base station and the wireless communication node coordinate the user equipment to transmit data, thereby improving the throughput of the user equipment.
  • the data transmission method provided by another embodiment of the present invention is as shown in FIG. 5.
  • the base station in the acknowledge mode, is a macro base station, and the wireless communication node is a TP, and the macro base station and the TP jointly maintain a first successful transmission.
  • the timer is described as an example, but is not limited thereto.
  • the method steps include:
  • the macro base station configures a first timing time for the TP, or for different UEs of the TP, or for each different UE and a different UE's DRB ID or E-RAB ID.
  • step S301 and step S302 are performed one by one, step S303 It is executed after step S302 and is not executed simultaneously with S301.
  • the first timing time is respectively configured for the DRB ID or the E-RAB ID corresponding to each UE.
  • the first timing time is set to 2 milliseconds for the video request in the 3 megabit bandwidth of the first UE, and the first timing time is 5 milliseconds for the video request of the 2 megabit bandwidth and high delay of the first UE.
  • the macro base station If the macro base station receives the first timing time of the 0AM transmission, the macro base station performs configuration according to the first timing time, and may forward or not forward the first timing time to the TP.
  • the macro base station sends a first timing time to the TP.
  • the first timing time may set different or the same value for different UEs, or may set different or the same value for different DRBs or E-RABs of different UEs, and may also set a value for the wireless communication node.
  • the macro base station may not send the first timing time to the TP, but the first timing time is sent from the AMP to the TP.
  • the macro base station sends the first timing time to the TP as an example.
  • the first timing time sent by 0AM to the TP is also within the protection range, which is not limited by this.
  • the TP receives a first timing time sent by the macro base station.
  • the TP sets a first timing time for each UE and a corresponding DRB ID or E-RAB ID of the UE according to the first timing time.
  • the macro base station sends a data packet to the TP.
  • the data packet is generated by using a PDCP PDU of a macro base station.
  • the TP receives a macro base station to send a data packet.
  • the TP acquires a PDCP PDU in the data packet as an RLC SDU.
  • the PDCP PDU sent by the PDCP layer to the RLC layer is the RLC SDU of the RLC layer before being processed by the RLC layer. Since the macro base station sends the PDCP PDU of the PDCP layer, that is, the RLC SDU of the RLC layer is not processed in the RLC layer of the TP, the sequence number of the header of the PDCP PDU is the same as the sequence number of the RLC SDU header, and the PDCP can be identified according to the serial number. Whether the PDU and the RLC SDU carry the same data information. 5309. The TP sends data generated by using the RLC SDU to the UE.
  • the TP divides the RLC SDU into three data packets, and the three data packets are respectively recorded as RLC PDU1, and the RLC PDU2 and the RLC PDU3 are sent to the UE, so that the UE according to the RLC PDU1, the RLC PDU2 and Whether the RLC PDU3 successfully transmits a second status report to the TP.
  • the TP receives a second status report sent by the UE.
  • the second status report is used to indicate whether the UE successfully receives data generated using the RLC SDU. If the TP receives the RLC PDU1 of the RLC PDU returned by the UE, and the second status report of the RLC PDU2 and the RLC PDU3 is an ACK (Acknowledgement), it determines that the RLC PDU is successfully sent, otherwise the transmission is not successful.
  • the TP can set the maximum number of retransmissions. For example, if the maximum number of retransmissions is set to 5, and the second status report fed back by RLC PDU2 5 times is NACK (Unacknowledgement), it is determined that the RLC PDU2 is not successfully sent. Further, it is determined that the RLC PDU that splits the RLC PDU2 is not successfully transmitted.
  • the TP can determine whether the received RLC SDU is successfully sent according to whether the RLC PDU is successfully sent, and can notify the macro base station according to whether the RLC SDU is successfully sent, so that the macro base station determines whether the PDCP PDU is successfully sent according to whether the RLC SDU is successfully sent.
  • the TP sends a first status report to the macro base station.
  • the first status report is used to indicate whether the PDCP PDU is successfully sent. If the second status report indicates that the UE successfully receives the data generated by using the RLC SDU, the first status report indicates that the PDCP PDU is successfully sent; The status report indicates that the UE has not successfully received the data generated using the RLC SDU, and the first status report indicates that the PDCP PDU was not successfully transmitted.
  • a method for controlling data transmission in a mode in which a TP and a macro base station are in a default transmission success is provided, that is, if the macro base station does not receive the first status report within the first preset time, it determines that the transmission is successful.
  • Mode. TP If it is confirmed that the RLC PDU is successfully transmitted and determines that the RLC SDU of the RLC PDU is successfully sent, the first status report is not sent to the macro base station; if the RP confirms that the RLC PDU is not sent After the success is sent and it is determined that the RLC SDU of the split cascading out of the RLC PDU is not successfully sent, the first status report is sent to the macro base station.
  • the first status report includes only information for identifying the RLC SDU; or, the first status report includes the UE ID and/or RB ID of the user equipment in addition to the information used to identify the RLC SDU.
  • the information used to identify the RLC SDU includes the identifier of the RLC SDU, where the identifier is the identifier of the RLC SDU header, or the number of the RLC SDU that is identified as the base station.
  • the first status report may be: an identifier of the discontinuous RLC SDU, an identifier of a minimum or maximum RLC SDU of a set of consecutive values, an offset value, where the offset value represents a consecutive number of consecutive RLC SDUs in a set of consecutive values The value or the value of the number minus one.
  • the bit number represents the continuity of the sequence number of the RLC RLC SDU, that is, if The serial number sent by a TP is 2, and when the serial number sent by this time is 3, since 1 1 occupies two bits, a common rule can be preset, and a specific bit is used in the status report. 1 Identifies the serial number of this time and the serial number sent last time.
  • the first status report sent by the TP-send carries the sequence numbers of the plurality of first SDUs
  • an offset value may be set in the first status report, and the consecutive numbers are selected. The largest or smallest RLC SDU serial number. If the offset value is the total number of consecutive RLC SDUs minus one, if the first status report needs to send 100 to 109 ten serial numbers, the offset value can be set to 9, and the first status report only carries the minimum value of 100. And the offset value of 9, so that the macro base station is based on 100, and each time superimposed by 1 superimposed 9 to obtain the ten serial numbers, here only by way of example, without limitation.
  • the TP may be configured to: maintain a first for each RLC SDU of the DRB ID or the E-RAB ID of the corresponding UE after receiving the time of the AM or the configuration of the macro base station.
  • Timer, first timer The length of the first timer is that the first timer is used to send the first status report to the macro base station, and the message includes the identifier of the RLC SDU, if the RLC SDU is not successfully sent. If the RLC SDU is successfully sent, the first status report is not sent.
  • the macro base station can receive the first timing time of the OAM and send it to the TP.
  • the configuration method of the macro base station and the TP after receiving the first time is described in the foregoing embodiment, and details are not described herein.
  • the macro base station maintains a first timer for each PDCP PDU of the RLC SDU, and the time of the first timer is the updated first timing time, which is greater than or equal to the first timing of the configuration, and the updated The time may be the sum of the configured time and the offset value, wherein the offset value is greater than or equal to twice the delay of the backhaul link between the macro base station and the TP, which is mainly considering the backhaul link delay for the data packet transmission. influences. If the first status report is received in the first time interval after the update, the PDCP PDU may not be successfully sent. If the identifier of the RLC SDU corresponding to the PDCP PDU is not received within the first time, the PDCP is determined. The PDU was successfully sent.
  • the macro base station receives the first status report sent by the TP.
  • the TP sends a first status report to the macro base station, where the first status report indicates that the RLC SDU is not successfully sent;
  • the second status report is used to indicate whether the UE successfully receives the data generated by using the RLC SDU;
  • the TP receives the second status report sent by the UE, where the second status report is used to indicate whether the UE successfully receives the data generated by using the RLC SDU;
  • the TP sends a first status report to the macro base station, where the first status report indicates that the RLC SDU is not successfully sent; or, if the second status report indicates The UE successfully receives the data packet generated using the RLC SDU, and the TP does not send the first status report to the macro base station.
  • the macro base station can receive the first status report sent by the TP.
  • the macro base station determines, according to the first status report, whether the PDCP PDU is successfully sent. For example, if the macro base station receives the first status report sent by the TP in the updated first time interval, if the first status report carries the identifier of one PDCP PDU, it is determined that the PDCP PDU is not successfully sent; If the station does not receive the first status report of the TP transmission within the first timing time after the update for one PDCP PDU, it is determined that the PDCP PDU is successfully transmitted.
  • the PDCP PDU that is not successfully transmitted and the PDCP PDU to be transmitted next may be transmitted to the Uu interface of the macro base station and the UE.
  • the UE is no longer transmitted through the TP; or, the macro base station can reselect a new TP, so that the new TP establishes a connection with the UE and performs data transmission: sending an activation indication to the new TP, the message includes: UE ID, UE The DRB ID or E-RAB ID corresponding to the Qos of the request service, and the RLC layer configuration information of the TP.
  • the new TP receives the activation indication of the macro base station and configures it according to the configuration requirements.
  • the macro base station if the UE enters the coverage of another macro base station, the macro base station generates a sequence number report of the PDCP PDU and/or sends the data to the target macro base station according to the PDPD PDU transmission success, and cuts the UE into the new macro base station. In order to enable the new macro base station to support the services required by the UE.
  • the TP receives the data packet sent by the macro base station, where the data packet is generated by using the PDCP PDU of the macro base station, and the TP acquires the PDCP PDU in the data packet as the RLC SDU, and provides the user with the RLC SDU.
  • the device sends data generated using the RLC SDU.
  • the macro base station only needs to be provided with the RLC layer, that is, it can interact with the PDCP layer of the TP, thereby ensuring that the data is implemented according to different mode requirements in the macro base station and the TP convention confirmation mode or the non-acknowledge mode.
  • the data transmission method provided by another embodiment of the present invention is as shown in FIG. 6.
  • the first timer is not maintained
  • the second timer is maintained
  • the base station is a macro base station
  • the wireless communication node is a TP.
  • the method steps include: S401: The macro base station sends a data packet to the TP.
  • the data packet is generated by using the PDCP PDU of the macro base station.
  • the TP receives a macro base station to send a data packet.
  • the TP acquires a PDCP PDU in the data packet as an RLC SDU.
  • the PDCP PDU sent by the PDCP layer to the RLC layer is the RLC SDU of the RLC layer before being processed by the RLC layer.
  • the PDCP PDU of the PDCP layer is not processed by the RLC layer of the PDC layer. Whether the PDU and the RLC SDU carry the same data information.
  • the TP sends the data generated by using the RLC SDU to the UE.
  • S405 The TP receives a second status report sent by the UE.
  • the second status report is used to indicate whether the UE successfully receives data generated by using the RLC SDU.
  • the TP accepts the RLC PDU1 of the RLC PDU returned by the UE, and the second status report of the RLC PDU2 and the RLC PDU3 is ACK, it is determined that the RLC PDU is successfully sent, otherwise the transmission is successful. Further, the TP can determine whether the received RLC SDU is successfully sent by using the RLC PDU, and can notify the macro base station according to whether the RLC SDU is successfully sent, so that the macro base station determines whether the PDCP PDU is successfully sent according to whether the RLC SDU is successfully sent.
  • S406 The TP sends a first status report to the macro base station.
  • a control method for data transmission in which the TP and the macro base station are in a non-acknowledgment mode is provided, that is, the macro base station determines according to the content of the first status report.
  • the first status report is used to indicate whether the PDCP PDU is successfully sent, where the first status report indicates that the PDCP PDU is successfully sent if the second status report indicates that the UE successfully receives the data generated by using the RLC SDU; The UE is instructed not to successfully receive data generated using the RLC SDU, and the first status report indicates that the PDCP PDU was not successfully transmitted.
  • the first status report carries information for identifying the RLC SDU, and the information used to identify the RLC SDU includes the identifier of the RLC SDU, where the identifier is the identifier of the RLC SDU header, or is identified as the RLC SDU agreed with the base station. Numbering.
  • the first status report further carries the UE ID of the UE and/or the bearer identifier RB ID.
  • the information used to identify the RLC SDU further includes an offset value, where the offset value is used to determine whether the PDCP PDU corresponding to the at least one RLC SDU corresponding to the offset value is successfully sent, or is used to identify the RLC SDU.
  • the information further includes a bitmap, where the bitmap is used to determine whether the PDCP PDU corresponding to the at least one RLC SDU consecutive to the RLC SDU is successfully sent, wherein the number of bits of the bitmap is the same as the number of the at least one RLC SDU.
  • the macro base station receives the first status report sent by the TP.
  • the macro base station receives the first status report sent by the TP, and the first status report indicates that the RLC SDU is successfully sent, it determines that the PDCP PDU is successfully sent; if the macro base station receives the first status report of the TP transmission. And the first status report indicates that the RLC SDU is not successfully sent, and then determines that the PDCP PDU is not successfully sent.
  • the identifier of the RLC SDU includes an identifier and a bit string of a minimum RLC SDU that is successfully or unsuccessfully transmitted. Each bit in the bit string indicates the status of the RLC SDU after the smallest RLC SDU that was successfully or unsuccessfully transmitted, which is whether the RLC SDU was successfully transmitted. If the identifier of the RLC SDU in the status report is 5, 1, 0, 0, 1, 0 ..., if the status indicates that the identifier of the first RLC SDU is the identifier of the successfully transmitted RLC SDU, then 5 indicates that the identifier is 5RLC. Successful transmission of the SDU, 10010 indicates that the RLC SDUs with the identifiers of 6, 9 are successfully sent, and the RLC SDUs with the identifiers of 7, 8, and 10 are not successfully sent.
  • the macro base station determines, according to the first status report, whether the PDCP PDU is successfully sent.
  • the data transmission control method provided by the embodiment of the present invention, the TP receives the data packet sent by the macro base station, where the data packet is generated by using the PDCP PDU of the macro base station, and the TP acquires the PDCP PDU in the data packet as the RLC SDU, and provides the user with the RLC SDU.
  • the device sends data generated using the RLC SDU. In this way, only the RLC layer needs to be set in the macro base station, that is, it can interact with the PDCP layer of the TP, thereby ensuring data in the macro base station and the TP convention.
  • the data transmission requirements are implemented according to different mode requirements, and the macro base station and the TP multi-point cooperative user equipment transmit data, thereby improving the throughput of the user equipment.
  • the data transmission method provided by another embodiment of the present invention is as shown in FIG. 7.
  • the base station is a macro base station and the wireless communication node is a TP in an acknowledge mode or a non-acknowledgment mode, but the method is not used. Any restrictions, the method steps include:
  • the macro base station sends a data packet to the TP.
  • the data packet is generated by using the PDCP PDU of the macro base station.
  • the TP receives a macro base station to send a data packet.
  • the TP acquires a PDCP PDU in the data packet as an RLC SDU.
  • the TP sends the data generated by using the RLC SDU to the UE.
  • S505 The TP receives a second status report sent by the UE.
  • the second status report is used to indicate whether the UE successfully receives data generated by using the RLC SDU.
  • steps S501 to S505 are the same as the transmission mode in the foregoing embodiment, and the processing method and the transmission content are the same, and details are not described herein again.
  • the macro base station sends a drop message to the TP.
  • the drop message indicates that the RLC SDU corresponding to the PDCP PDU is discarded.
  • the discard message carries information for identifying the RLC SDU, and the information for identifying the RLC SDU includes the identifier of the RLC SDU, where the identifier is the identifier of the RLC SDU header, or the number of the RLC SDU that is identified as the base station.
  • the PDCP of the macro base station maintains a timeout timer for the PDCP SDU corresponding to each PDCP PDU.
  • the length of the timeout timer is a second pre-time, such as 10 seconds, and the TP is sent to the TP after more than 10 seconds. Discard the message.
  • the second timing is set for each UE's DRB ID or E-RAB ID.
  • the discard message may include an identifier of the RLC SDU, and the identifier of the RLC SDU may be a PDU header sequence number sent by the macro base station to the TP, or may be a TP
  • the preset encoding of the well-known RLC SDU such as RLC SDU1, 2, 3, 4, 5 corresponding to 1, 3, 5, 7, and 9 of the PDCP PDU, can be successfully transmitted according to the successful transmission of the RLC SDU2 to determine that the PDCP PDU3 is successfully transmitted.
  • the drop message may further include a UE ID, a DRB ID of the UE, or an E-RAB ID. In order to reduce the overhead of dropping messages.
  • the content of the discarded message may be: an identifier of the discontinuous RLC RLC SDU, an identifier of the smallest or largest RLC SDU of a set of consecutive values, an offset value, where the offset value represents a continuous RLC RLC of a set of consecutive values The number of SDUs.
  • the identifier carried in the discarding message may be any identifier carried in the first status report in the foregoing embodiment, and details are not described herein again.
  • the TP receives the discard message sent by the macro base station.
  • the TP receives the discard message
  • the corresponding RLC SDU is discarded according to the discard message.
  • step S508 may be performed, and step S508 and step S505 may be performed alternatively.
  • the macro base station sends a second timing time to the TP.
  • S509 The TP starts a second timer, where the second timing of the second timer is sent by the macro base station.
  • the macro base station sends a second timing time to the TP.
  • the second timing is the timeout timer of the PDCP SDU corresponding to the PDCP PDU.
  • the TP maintains the second timer, it may be that the second timing time is set for the RLC SDU of each UE's DRB ID or E-RAB ID. After the timeout, the TP discards the corresponding RLC SDU.
  • the TP discards the RLC SDU when the second timer expires.
  • the TP discards the RLC SDU, which saves space for buffering the RLC SDU in the TP.
  • the TP receives the data packet sent by the macro base station, where the data packet is generated by using the PDCP PDU of the macro base station, and the TP acquires the PDCP PDU in the data packet as the RLC SDU, and provides the user with the RLC SDU.
  • Device sends using RLC The data generated by the SDU.
  • the macro base station only needs to be provided with the RLC layer, that is, it can interact with the PDCP layer of the TP, thereby ensuring that the data is implemented according to different mode requirements in the macro base station and the TP convention confirmation mode or the non-acknowledge mode.
  • the wireless communication node 40 provided by the embodiment of the present invention, as shown in FIG. 9, includes: a receiving unit 401, configured to receive a data packet sent by the base station 50, where the data packet is generated by using a PDCP PDU of the base station 50.
  • the control unit 402 is configured to obtain a PDCP PDU in the data packet received by the receiving unit 401 as an RLC SDU.
  • the sending unit 403 is configured to send, to the UE 60, data generated by the control unit 402 using the RLC SDU.
  • the receiving unit 401 is further configured to receive the second status report sent by the UE 60, where the second status report is used to indicate whether the UE 60 successfully receives the data generated by using the RLC SDU.
  • the sending unit 403 is further configured to send a first status report to the base station 50, where the first status report is used to indicate whether the PDCP PDU is successfully sent, where the second status report received by the receiving unit 401 indicates that the UE 60 successfully receives the use.
  • the data generated by the RLC SDU the first status report indicates that the PDCP PDU is successfully sent; if the second status report received by the receiving unit 401 indicates that the UE 60 has not successfully received the data generated by using the RLC SDU, the first status report indicates that the PDCP PDU is not successfully sent. .
  • the sending unit 403 is further configured to send the first status report to the base station 50 according to a preset period.
  • the sending unit 403 sends the first status report to the base station 50.
  • the receiving unit 401 is further configured to receive the discard message sent by the base station 50, and discard the message. Indicates to discard the RLC SDU corresponding to the PDCP PDU.
  • the control unit 402 is further configured to discard the RLC SDU according to the discard message received by the receiving unit 401.
  • the wireless communication node 40 as shown in FIG. 10, further includes:
  • the first timing unit 404 is configured to start a first timer, where the first timing of the first timer is sent by the base station 50 or the operation management and maintenance OAM.
  • the sending unit 403 sends a first status report to the base station 50, where A status report indicates that the RLC SDU was not successfully transmitted; the second status report is used to indicate whether the UE 60 successfully received the data generated using the RLC SDU.
  • the receiving unit 401 receives the second status report sent by the UE 60, where the second status report is used to indicate whether the UE 60 successfully receives the generated using the RLC SDU.
  • the data is used to indicate whether the UE 60 successfully receives the generated using the RLC SDU.
  • the sending unit 403 sends a first status report to the base station 50, wherein the first status indication indicates that the RLC SDU was not successfully transmitted.
  • the transmitting unit 403 does not send the first status report to the base station 50.
  • the wireless communication node 40 as shown in FIG. 11, further includes:
  • the second timing unit 405 is configured to start a second timer, where the second timing of the second timer is sent by the base station 50.
  • the control unit 402 is further configured to discard the RLC SDU.
  • a sending unit 501 configured to send a data packet to the wireless communication node 40, where the data packet is generated by using a PDCP PDU, so that the wireless communication node 40 acquires a PDCP PDU in the data packet as a radio link control service data unit RLC SDU, And to the UE 60 sends data generated using the RLC SDU.
  • the sending unit 501 is further configured to send a drop message to the wireless communication node 40, where the drop message includes an identifier of the first SDU, and is used to instruct the wireless communication node 40 to discard.
  • the first SDU corresponding to the first PDU.
  • the base station 50 as shown in FIG. 13, further includes:
  • the receiving unit 502 is configured to receive a first status report sent by the wireless communication node 40, where the first status report is used to indicate whether the PDCP PDU is successfully sent, and the first status report is that the wireless communication node 40 receives the second status sent by the UE 60. After the report is sent, if the second status report indicates that the UE 60 successfully receives the data generated by using the RLC SDU, the first status report indicates that the PDCP PDU is successfully sent; if the second status report indicates that the UE 60 has not successfully received the RLC SDU. The generated data, the first status report indicates that the PDCP PDU was not successfully transmitted.
  • the control unit 503 is configured to determine, according to the first status report received by the receiving unit 502, whether the PDCP PDU is successfully sent.
  • the receiving unit 502 is further configured to receive and cause the sending unit 501 to forward the first timing time of the operation management OAM transmission to the wireless communication node 40.
  • the control unit 503 is further configured to generate and cause the sending unit 501 to send a first timing time to the wireless communication node 40, wherein the first timing time is used by the first timer started by the wireless communication node 40.
  • the receiving unit 502 receives the first status report sent by the wireless communication node 40 when the first timer expires, wherein the first status report indicates that the RLC SDU is not successfully transmitted, so that the control unit 503 determines that the RLC SDU is not successfully transmitted.
  • the receiving unit 502 receives the first status report sent by the wireless communication node 40 before the first timer expires, wherein the first status report indicates that the RLC SDU is not successfully transmitted, so that the control unit 503 determines that the RLC SDU is not successfully transmitted.
  • the receiving unit 502 does not receive the wireless communication node 40 before the first timer expires.
  • the first status report is sent such that the control unit 503 determines that the RLC SDU was not successfully transmitted.
  • the sending unit 501 is further configured to send a request message to the wireless communication node 40, where the request message is used to request the wireless communication node 40 to report to the base station first state.
  • the sending unit 501 is further configured to send a drop message to the wireless communication node 40, and the drop message indicates to discard the RLC SDU corresponding to the PDCP PDU.
  • the sending unit 501 is further configured to send a second timing time to the wireless communication node 40, where the second timing time is used by the second timer initiated by the wireless communication node 40.
  • the base station 50 can be operated by using the method provided by the foregoing embodiment, and the working method is the same as that provided by the embodiment, and details are not described herein again.
  • the base station 50 and the wireless communication node 40 provided by the embodiment of the present invention receive the data packet sent by the base station 50, wherein the data packet is generated by using the PDCP PDU of the base station 50, and the wireless communication node 40 acquires the PDCP in the data packet.
  • the PDU acts as an RLC SDU and transmits data generated using the RLC SDU to the UE 60.
  • the RLC layer needs to be set in the base station 50, that is, it can interact with the PDCP layer of the wireless communication node 40, thereby ensuring that the data is in the confirmation mode or the non-confirm mode of the base station 50 and the wireless communication node 40 convention, according to Different mode requirements implement data transmission requirements, and since the base station 50 and the wireless communication node 40 cooperate with the UE 60 to transmit data, the throughput of the UE 60 is improved.
  • the wireless communication node 70 provided by another embodiment of the present invention, as shown in FIG. 14, includes:
  • the receiver 701 is configured to receive a data packet sent by the base station 80, where the data packet is generated by using a PDCP PDU of the base station 80.
  • the processor 702 is configured to obtain a PDCP PDU in the data packet received by the receiver 701 as an RLC SDU.
  • the transmitter 703 is configured to send, to the UE 60, data generated by the processor 702 using the RLC SDU. In the acknowledgment mode, the transmitter 703 is further configured to send a first status report to the base station 80, where the first status report is generated by the processor 702 according to whether the RLC PDU received by the receiver 701 is successfully sent, so that the base station 80 is configured according to the A status report determines if the PDCP PDU was successfully sent.
  • the receiver 701 is configured to receive a second status report sent by the UE 60, where the second status report is used to indicate whether the UE 60 successfully receives data generated by using the RLC SDU.
  • the transmitter 703 is further configured to send a first status report to the base station 80, where the first status report is used to indicate whether the PDCP PDU is successfully sent, where the second status report received by the receiver 701 indicates that the UE 60 successfully receives the use.
  • the first status report indicates that the PDCP PDU is successfully sent. .
  • the processor 702 is further configured to start a first timer, where the first timing of the first timer is sent by the base station 80 or the operation management and maintenance OAM.
  • the transmitter 703 sends a first status report to the base station 80, where the first status report indicates the RLC SDU
  • the second status report is used to indicate whether the UE 60 successfully received the data generated using the RLC SDU.
  • the receiver 701 receives the second status report sent by the UE 60, where the second status report is used to indicate whether the UE 60 successfully receives the data generated by using the RLC SDU.
  • the transmitter 703 transmits a first status report to the base station 80, wherein the first status message indicates that the RLC SDU was not successfully transmitted.
  • the transmitter 703 does not transmit the first status report to the base station 80. Further, the transmitter 703 is further configured to send the first status report to the base station 80 according to a preset period.
  • the transmitter 703 sends a first status report to the base station 80.
  • the receiver 701 is further configured to receive a drop message sent by the base station 80, and the drop message indicates to discard the RLC SDU corresponding to the PDCP PDU.
  • the processor 702 is further configured to: according to the discarded message received by the receiver 701. Discard the RLC SDU.
  • the processor 702 is further configured to start a second timer, where the second timing of the second timer is sent by the base station 80.
  • the processor 702 is also used to discard the RLC SDU.
  • the wireless communication node 70 can be operated by using the method provided by the foregoing embodiment, and the working method is the same as that provided by the embodiment, and details are not described herein again.
  • the base station 80 includes: a transmitter 801, configured to send a data packet to the wireless communication node 70, where the data packet is generated by using a PDCP data unit PDU, so that the wireless The communication node 70 acquires the PDCP PDU in the data packet as a radio link control service data unit RLC SDU, and transmits data generated using the RLC SDU to the UE 60.
  • a transmitter 801 configured to send a data packet to the wireless communication node 70, where the data packet is generated by using a PDCP data unit PDU, so that the wireless
  • the communication node 70 acquires the PDCP PDU in the data packet as a radio link control service data unit RLC SDU, and transmits data generated using the RLC SDU to the UE 60.
  • the base station 80 as shown in FIG. 16, further includes:
  • the receiver 802 is configured to receive a first status report sent by the wireless communication node 70, where the first status report is used to indicate whether the PDCP PDU is successfully sent, and the first status report is that the wireless communication node 70 receives the second status sent by the UE 60. After the report is sent, if the second status report indicates that the UE 60 successfully receives the data generated by using the RLC SDU, the first status report indicates that the PDCP PDU is successfully sent; if the second status report indicates that the UE 60 has not successfully received the RLC SDU. The generated data, the first status report indicates that the PDCP PDU was not successfully transmitted.
  • the processor 803 is configured to determine, according to the first status report received by the receiver 802 Whether the PDUP PDU was successfully sent.
  • the receiver 802 is configured to receive and cause the transmitter 801 to forward the first timing time of the operation management OAM transmission to the wireless communication node 70.
  • the processor 803 is configured to generate and enable the transmitter 801 to the wireless communication node.
  • the first timing time is transmitted 70, wherein the first timing time is for a first timer initiated by the wireless communication node 70.
  • the receiver 802 receives the first status report sent by the wireless communication node 70 when the first timer expires, where the first status report indicates that the RLC SDU is not successfully sent, so that the processor 803 determines that the RLC SDU is not successfully sent. .
  • the receiver 802 receives the first status report sent by the wireless communication node 70 before the first timer expires, wherein the first status report indicates that the RLC SDU is not successfully sent, so that the processor 803 determines that the RLC SDU is not successfully sent. .
  • the receiver 802 does not receive the first status report sent by the wireless communication node 70 before the first timer expires, so that the processor 803 determines that the RLC SDU has not been successfully transmitted.
  • the transmitter 801 is further configured to send a request message to the wireless communication node 70, where the request message is used to request the wireless communication node 70 to report to the base station first state.
  • the transmitter 801 is further configured to send a drop message to the wireless communication node 70, and the drop message indicates that the RLC SDU corresponding to the PDCP PDU is discarded.
  • the transmitter 801 is further configured to send a second timing time to the wireless communication node 70, where the second timing time is used by the second timer initiated by the wireless communication node 70.
  • the base station 80 can be operated by using the method provided by the foregoing embodiment, and the working method is the same as that provided by the embodiment, and details are not described herein again.
  • the base station 80 and the wireless communication node 70 provided by the embodiment of the present invention receive the data packet sent by the base station 80, wherein the data packet is generated by using the PDCP PDU of the base station 80, and the wireless communication node 70 acquires the PDCP in the data packet.
  • the PDU acts as an RLC SDU and transmits data generated using the RLC SDU to the user equipment.
  • the RLC layer needs to be set in the base station 80, that is, the PDCP that can be connected to the wireless communication node 70.
  • the layers interact to ensure that the data is transmitted according to different mode requirements in the acknowledge mode or the unacknowledged mode of the base station 80 and the wireless communication node 70 convention, and the base station 80 and the wireless communication node 70 cooperate with the user equipment. The data is transmitted, thus increasing the throughput of the user equipment.
  • the system provided by the embodiment of the present invention, as shown in FIG. 17, includes:
  • the wireless communication node 40 in the above embodiment is the wireless communication node 40 in the above embodiment.
  • the UE 60 receives data generated by the wireless communication node 40 using the RLC SDU.
  • the foregoing base station 50 and the wireless communication node 40 can perform the foregoing method embodiments.
  • the specific structure can be referred to the embodiment of the base station 50 and the embodiment of the wireless communication node 40.
  • the base station 50 and the wireless communication node 40 can be used to perform the steps of the foregoing method embodiments, and the application in the specific steps can refer to the foregoing method embodiments.
  • the specific structure of the base station 50 and the wireless communication node 40 is the same as that of the base station and the terminal provided in the foregoing embodiments, and details are not described herein again.
  • the system provided by the embodiment of the present invention includes a base station, a wireless communication node, and a UE, where the wireless communication node receives a data packet sent by the base station, where the data packet is generated by using a PDCP PDU of the base station, and the wireless communication node acquires the data packet.
  • the PDCP PDU in the RTP SDU acts as an RLC SDU and transmits data generated using the RLC SDU to the user equipment.
  • only the RLC layer needs to be set in the base station, that is, it can interact with the PDCP layer of the wireless communication node, thereby ensuring that the data is implemented according to different mode requirements in the confirmation mode of the base station and the wireless communication node convention or in the non-confirmed mode.
  • the transmission of data requires, and since the base station and the wireless communication node coordinate the user equipment to transmit data, the throughput of the user equipment is improved.
  • the system provided by the embodiment of the present invention, as shown in FIG. 18, includes:
  • the wireless communication node 70 in the above embodiment is the wireless communication node 70 in the above embodiment.
  • the UE 60 receives data generated by the wireless communication node 70 using the RLC SDU.
  • the foregoing base station 80 and the wireless communication node 70 can perform the foregoing method embodiments.
  • the specific structure can be referred to the embodiment of the base station 80 and the embodiment of the wireless communication node 70.
  • the base station 80 and the wireless communication node 70 can be used to perform the steps of the foregoing method embodiments, and the application in the specific steps can refer to the foregoing method embodiments.
  • the specific structure of the base station 80 and the wireless communication node 70 is the same as that of the base station and the terminal provided in the foregoing embodiments, and details are not described herein again.
  • the system provided by the embodiment of the present invention includes a base station, a wireless communication node, and a UE, where the wireless communication node receives a data packet sent by the base station, where the data packet is generated by using a PDCP PDU of the base station, and the wireless communication node acquires the data packet.
  • the PDCP PDU in the RTP SDU acts as an RLC SDU and transmits data generated using the RLC SDU to the user equipment.
  • only the RLC layer needs to be set in the base station, that is, it can interact with the PDCP layer of the wireless communication node, thereby ensuring that the data is implemented according to different mode requirements in the confirmation mode of the base station and the wireless communication node convention or in the non-confirmed mode.

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Abstract

本发明实施例提供一种数据传输的控制方法、装置及系统,涉及通信领域,能够保证不同装置间的分组数据汇聚协议层与无线链路控制层的层间交互,进而保证数据的传输要求,以提升UE的吞吐量。该方法包括:无线通信节点接收基站发送的数据包,其中,数据包是用基站的分组数据汇聚协议协议数据单元PDCP PDU生成的;无线通信节点获取数据包中的PDCP PDU作为无线链路控制业务数据单元RLC SDU;以及无线通信节点向用户设备发送使用RLC SDU生成的数据,其中,无线通信节点与用户设备建立了用户面连接,基站与用户设备建立了控制面连接。本发明实施例用于基站与用户设备间的数据传输。

Description

一种数据传输的控制方法、 装置及系统
技术领域
本发明涉及通信领域, 尤其涉及一种数据传输的控制方法、 装 置及系统。
背景技术
近年来, 随着移动通信技术的快速发展, 用户规模急剧增长,
UE ( User Equipment , 用户设备) 对网络的需求与 日倶增, 带给网 络基站巨大的服务巨大, 尤其是热点区域和室内通信中, 运营商需 要不断地维护覆盖范围和发射功率较大的基站才能保证各个 UE 所 需的业务能够顺利地开展并运营。
异构 网 络是为 了 满足 LTE-Advanced ( Long Term Evolution- Advanced , 演进的长期演进) 通信系统系统中热点区域和室内通信需 求而提出的, 主要实现方式是在传统的网络结构中, 引入一些覆盖 范围和发射功率较小的基站构成小小区, 布放在业务热点区域、 或 者覆盖空洞区域。 这样一来, UE移动到这些区域内, 即可以把业务 切换到这些小小区中, 以实现业务分流或者弥补覆盖等目 的。
现有的 CoMP ( Coordinated Multiple Point , 协同多点) 技术中, 可以把 RRH(Remote Radio Head , 远端射频头)布放在基站覆盖范围 内, 釆用光纤连接的回程方式, 并由基站集中式调度 UE , 让多个传 输点如基站、一个或者多个 RRH协同给 UE传输数据来提升吞吐量。 但是由于光纤部署回程网络成本相当高, 不利于运营使用。 所以需 要探索一种新的网络架构, 可以在使用非光纤的回程网络时有效的 提升 UE的吞吐量。
发明内容
本发明提供一种数据传输控制方法、 装置及系统, 能够保证不 同装置间的分组数据汇聚协议层与无线链路控制层的层间交互, 进 而保证数据的传输要求, 以提升 UE的吞吐量。
第一方面, 提供一种数据传输的控制方法, 该方法包括: 无线通信节点接收基站发送的数据包, 其中, 所述数据包是用 所述基站的分组数据汇聚协议协议数据单元 PDCP PDU生成的; 所述无线通信节点获取所述数据包中的所述 PDCP PDU作为无 线链路控制业务数据单元 RLC SDU; 以及
所述无线通信节点向用户设备发送使用所述 RLC SDU 生成的 数据, 其中, 所述无线通信节点与所述用户设备建立了用户面连接, 所述基站与所述用户设备建立了控制面连接。
在第一种可能的实现方式中, 根据第一方面, 该方法还包括: 所述无线通信节点启动第一定时器, 其中, 所述第一定时器的 第一定时时间由所述基站或运营管理与维护 OAM发送。
在第二种可能的实现方式中, 结合第一方面和第一种可能实现 的方式, 该方法还包括:
如果在所述第一定时器到时时, 所述无线通信节点没有接收到 所述用户设备发送的第二状态报告, 所述无线通信节点向所述基站 发送第一状态报告, 其中, 所述第一状态报告指示所述 RLC SDU未 成功发送; 所述第二状态报告用于指示所述用户设备是否成功接收 到使用所述 RLC SDU生成的所述数据; 或者,
在所述第一定时器到时前, 所述无线通信节点接收所述用户设 备发送的第二状态报告, 其中, 所述第二状态报告用于指示所述用 户设备是否成功接收到使用所述 RLC SDU生成的所述数据;
如果所述第二状态报告指示所述用户设备没有成功接收到使用 所述 RLC SDU生成的所述数据包,所述无线通信节点向所述基站发 送第一状态报告, 其中, 所述第一状态报告指示所述 RLC SDU未成 功发送; 或者,
如果所述第二状态报告指示所述用户设备成功接收到使用所述 RLC SDU生成的所述数据包, 所述无线通信节点不向所述基站发送 所述第一状态报告。
在第三种可能的实现方式中, 根据第一方面, 该方法还包括: 所述无线通信节点接收所述用户设备发送的第二状态报告, 其 中, 所述第二状态报告用于指示所述用户设备是否成功接收到使用 所述 RLC SDU生成的所述数据;
向所述基站发送第一状态报告, 其中, 所述第一状态报告用于 指示所述 PDCP PDU是否发送成功, 其中, 如果所述第二状态报告 指示所述用户设备成功接收到使用所述 RLC SDU生成的所述数据, 所述第一状态报告指示所述 PDCP PDU发送成功; 如果所述第二状 态报告指示所述用户设备没有成功接收到使用所述 RLC SDU 生成 的所述数据,所述第一状态报告指示所述 PDCP PDU没有发送成功。
在第四种可能的实现方式中, 根据第一方面, 该方法还包括: 接收所述基站发送的丟弃消息, 所述丟弃消息指示丟弃所述 PDCP PDU对应的所述 RLC SDU ;
根据接收的所述丟弃消息丟弃所述 RLC SDU。
第二方面, 提供一种数据传输的控制方法, 该方法包括: 基站向无线通信节点发送数据包, 所述数据包是用分组数据汇 聚协议协议数据单元 PDCP PDU生成的, 以使得所述无线通信节点 获取所述数据包中的所述 PDCP PDU作为无线链路控制业务数据单 元 RLC SDU , 并向用户设备发送使用所述 RLC SDU生成的数据, 其中, 所述无线通信节点与所述用户设备建立了用户面连接, 所述 基站与所述用户设备建立了控制面连接。
在第一种可能的实现方式中, 根据第二方面, 该方法还包括: 所述基站接收并向所述无线通信节点转发运营管理 OAM 发送 的第一定时时间; 或者,
所述基站生成并向所述无线通信节点发送所述第一定时时间, 其中, 所述第一定时时间用于所述无线通信节点启动的第一定时器。
在第二种可能的实现方式中, 结合第二方面或第一种可能的实 现方式, 该方法还包括:
所述基站在所述第一定时器到时时, 接收所述无线通信节点发 送的第一状态报告, 其中, 所述第一状态报告指示所述 RLC SDU未 成功发送, 以确定所述 RLC SDU未成功发送; 或者,
所述基站在所述第一定时器到时前, 接收所述无线通信节点发 送的第一状态报告, 其中, 所述第一状态报告指示所述 RLC SDU未 成功发送, 以确定所述 RLC SDU未成功发送; 或者,
所述基站在所述第一定时器到时前, 未接收到所述无线通信节 点发送的第一状态 4艮告, 以确定所述 RLC SDU未成功发送。
在第三种可能的实现方式中, 根据第二方面, 在基站向无线通 信节点发送数据包之后, 该方法还包括:
所述基站接收所述无线通信节点发送的第一状态报告, 其中, 所述第一状态报告用于指示所述 PDCP PDU是否发送成功, 所述第 一状态报告是所述无线通信节点接收所述用户设备发送的第二状态 报告后发送的, 其中, 如果所述第二状态报告指示所述用户设备成 功接收到使用所述 RLC SDU生成的所述数据,所述第一状态报告指 示所述 PDCP PDU发送成功; 如果所述第二状态报告指示所述用户 设备没有成功接收到使用所述 RLC SDU生成的所述数据,所述第一 状态 告指示所述 PDCP PDU没有发送成功;
所述基站根据所述第一状态报告确定所述 PDCP PDU是否成功 发送。
在第四种可能的实现方式中, 根据第二方面, 该方法还包括: 所述基站向所述无线通信节点发送丟弃消息, 所述丟弃消息指 示丟弃所述 PDCP PDU对应的所述 RLC SDU。
在第五种可能的实现方式中, 根据第二方面, 该方法还包括: 所述基站向无线通信节点发送第二定时时间, 所述第二定时时 间用于所述无线通信节点启动的第二定时器。
第三方面, 提供一种无线通信节点, 该无线通信节点包括: 接收单元, 用于接收基站发送的数据包, 其中, 所述数据包是 用所述基站的分组数据汇聚协议协议数据单元 PDCP PDU生成的; 控制单元, 用于获取所述接收单元接收的所述数据包中的所述
PDCP PDU作为无线链路控制业务数据单元 RLC SDU;
发送单元, 用于向用户设备发送所述控制单元使用所述 RLC
SDU生成的数据, 其中, 所述无线通信节点与所述用户设备建立了 用户面连接, 所述基站与所述用户设备建立了控制面连接。
在第一种可能的实现方式中, 根据第三方面, 该无线通信节点 还包括:
第一定时单元, 用于启动第一定时器, 其中, 所述第一定时器 的第一定时时间由所述基站或运营管理与维护 OAM发送。
在第二种可能的实现方式中, 根据第三方面, 该无线通信节点 中所述接收单元, 还用于接收所述用户设备发送的第二状态报告, 其中, 所述第二状态报告用于指示所述用户设备是否成功接收到使 用所述 RLC SDU生成的所述数据;
所述发送单元, 用于向所述基站发送第一状态报告, 其中, 所 述第一状态报告用于指示所述 PDCP PDU是否发送成功, 其中, 如 果所述接收单元接收的所述第二状态报告指示所述用户设备成功接 收到使用所述 RLC SDU生成的所述数据,所述第一状态报告指示所 述 PDCP PDU发送成功; 如果所述接收单元接收的所述第二状态报 告指示所述用户设备没有成功接收到使用所述 RLC SDU 生成的所 述数据, 所述第一状态报告指示所述 PDCP PDU没有发送成功。
在第三种可能的实现方式中, 根据第三方面, 该无线通信节点 的所述接收单元, 还用于接收所述基站发送的丟弃消息, 所述丟弃 消息指示丟弃所述 PDCP PDU对应的所述 RLC SDU;
所述控制单元, 还用于根据所述接收单元接收的所述丟弃消息 丟弃所述 RLC SDU。
在第四种可能的实现方式中, 根据第三方面, 该无线通信节点 还包括:
第二定时单元, 用于启动第二定时器, 其中, 所述第二定时器 的第二定时时间由所述基站发送;
若所述第二定时器超时时, 所述控制单元还用于丟弃所述 RLC
SDU。
第四方面, 提供一种基站, 该基站包括:
发送单元, 用于向无线通信节点发送数据包, 所述数据包是用 分组数据汇聚协议协议数据单元 PDCP PDU生成的, 以使得所述无 线通信节点获取所述数据包中的所述 PDCP PDU作为无线链路控制 业务数据单元 RLC SDU , 并向用户设备发送使用所述 RLC SDU生 成的数据, 其中, 所述无线通信节点与所述用户设备建立了用户面 连接, 所述基站与所述用户设备建立了控制面连接。
在第一种可能的实现方式中, 根据第四方面, 该基站还包括: 接收单元, 用于接收并使得所述发送单元向所述无线通信节点 转发运营管理 OAM发送的第一定时时间; 或者,
控制单元, 用于生成并使得所述发送单元向所述无线通信节点 发送所述第一定时时间, 其中, 所述第一定时时间用于所述无线通 信节点启动的第一定时器。
在第二种可能的实现方式中, 根据第四方面, 该基站中所述接 收单元, 还用于接收所述无线通信节点发送的第一状态报告, 其中, 所述第一状态报告用于指示所述 PDCP PDU是否发送成功, 所述第 一状态报告是所述无线通信节点接收所述用户设备发送的第二状态 报告后发送的, 如果所述第二状态报告指示所述用户设备成功接收 到使用所述 RLC SDU生成的所述数据,所述第一状态报告指示所述 PDCP PDU 发送成功; 如果所述第二状态报告指示所述用户设备没 有成功接收到使用所述 RLC SDU生成的所述数据,所述第一状态报 告指示所述 PDCP PDU没有发送成功;
所述控制单元, 还用于根据所述接收单元接收的所述第一状态 报告确定所述 PDCP PDU是否成功发送。
在第三种可能的实现方式中, 根据第四方面, 所述基站中所述 发送单元, 还用于向所述无线通信节点发送丟弃消息, 所述丟弃消 息指示丟弃所述 PDCP PDU对应的所述 RLC SDU。
在第四种可能的实现方式中, 根据第四方面, 所述基站中所述 发送单元, 还用于向无线通信节点发送第二定时时间, 所述第二定 时时间用于所述无线通信节点启动的第二定时器。。
第五方面, 提供一种无线通信节点, 该无线通信节点包括: 接收器, 用于接收基站发送的数据包, 其中, 所述数据包是用 所述基站的分组数据汇聚协议协议数据单元 PDCP PDU生成的; 处理器, 用于用于获取所述接收器接收的所述数据包中的所述 PDCP PDU作为无线链路控制业务数据单元 RLC SDU;
发送器, 用于向用户设备发送所述处理器使用所述 RLC SDU 生成的数据, 其中, 所述无线通信节点与所述用户设备建立了用户 面连接, 所述基站与所述用户设备建立了控制面连接。
在第一种可能的实现方式中, 根据第五方面, 该无线通信节点 中所述处理器, 还用于启动第一定时器, 其中, 所述第一定时器的 第一定时时间由所述基站或运营管理与维护 OAM发送。
在第二种可能的实现方式中, 根据第五方面, 该无线通信节点 具体实现为:
所述接收器, 用于接收所述用户设备发送的第二状态报告, 其 中, 所述第二状态报告用于指示所述用户设备是否成功接收到使用 所述 RLC SDU生成的所述数据;
所述发送器, 还用于向所述基站发送第一状态报告, 其中, 所 述第一状态报告用于指示所述 PDCP PDU是否发送成功, 其中, 如 果所述所述接收器接收的所述第二状态报告指示所述用户设备成功 接收到使用所述 RLC SDU生成的所述数据,所述第一状态报告指示 所述 PDCP PDU发送成功; 如果所述所述接收器接收的所述第二状 态报告指示所述用户设备没有成功接收到使用所述 RLC SDU 生成 的所述数据,所述第一状态报告指示所述 PDCP PDU没有发送成功。
在第三种可能的实现方式中, 根据第五方面, 该无线通信节点 中所述接收器, 还用于接收所述基站发送的丟弃消息, 所述丟弃消 息指示丟弃所述 PDCP PDU对应的所述 RLC SDU;
所述处理器, 还用于根据所述接收器接收的所述丟弃消息丟弃 所述 RLC SDU。
在第四种可能的实现方式中, 根据第五方面, 该无线通信节点 中所述处理器, 还用于启动第二定时器, 其中, 所述第二定时器的 第二定时时间由所述基站发送;
若所述第二定时器超时时, 所述处理器还用于丟弃所述 RLC
SDU。
第六方面, 提供一种基站, 该基站包括:
发送器, 用于向无线通信节点发送数据包, 所述数据包是用 PDCP数据单元 PDU生成的, 以使得所述无线通信节点获取所述数 据包中的所述 PDCP PDU 作为无线链路控制业务数据单元 RLC SDU , 并向用户设备发送使用所述 RLC SDU生成的数据, 其中, 所 述无线通信节点与所述用户设备建立了用户面连接, 所述基站与所 述用户设备建立了控制面连接。
在第一种可能的实现方式中, 根据第五方面, 该基站还包括: 接收器, 用于接收并使得所述发送器向所述无线通信节点转发 运营管理 OAM发送的第一定时时间; 或者,
处理器, 用于生成并使得所述发送器向所述无线通信节点发送 所述第一定时时间, 其中, 所述第一定时时间用于所述无线通信节 点启动的第一定时器。
在第二种可能的实现方式中, 根据第六方面, 该基站中所述接 收器, 用于接收所述无线通信节点发送的第一状态报告, 其中, 所 述第一状态报告用于指示所述 PDCP PDU是否发送成功, 所述第一 状态报告是所述无线通信节点接收所述用户设备发送的第二状态报 告后发送的, 其中, 如果所述第二状态报告指示所述用户设备成功 接收到使用所述 RLC SDU生成的所述数据,所述第一状态报告指示 所述 PDCP PDU发送成功; 如果所述第二状态报告指示所述用户设 备没有成功接收到使用所述 RLC SDU生成的所述数据,所述第一状 态报告指示所述 PDCP PDU没有发送成功;
所述处理器, 用于根据所述接收器接收的所述第一状态报告确 定所述 PDUP PDU是否成功发送。
在第三种可能的实现方式中, 根据第六方面, 该基站中所述发 送器, 还用于向所述无线通信节点发送丟弃消息, 所述丟弃消息指 示丟弃所述 PDCP PDU对应的所述 RLC SDU。
在第四种可能的实现方式中, 根据第六方面, 该基站中所述发 送器, 还用于向无线通信节点发送第二定时时间, 所述第二定时时 间用于所述无线通信节点启动的第二定时器。
通过上述方案, 无线通信节点接收基站发送的数据包, 其中, 数据包是用基站的分组数据汇聚协议协议数据单元生成的, 然后获 取数据包中的分组数据 '; C聚协议协议数据单元作为无线链路控制业 务数据单元; 并向用户设备发送使用无线链路控制业务数据单元生 成的数据。 这样一来, 基站中仅需要设置有无线链路控制层, 即可 以与无线通信节点的分组数据汇聚协议层进行交互, 进而保证数据 在基站与无线通信节点公约的确认模式下或非确认模式下, 根据不 同模式需求实现数据的传输要求, 且由于基站和无线通信节点多点 协同用户设备传输数据, 因此提升了用户设备的吞吐量。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下 面将对实施例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明的一些实施例, 对于 本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以 根据这些附图获得其他的附图。
图 1 为本发明实施例提供的基站和无线通信节点的协议栈的结 构示意图;
图 2为本发明实施例提供的无线通信节点侧数据传输方法的流 程示意图;
图 3 为本发明另一实施例提供的无线通信节点侧数据传输方法 的流程示意图。
图 4 为本发明实施例提供的基站侧数据传输方法的流程示意 图;
图 5为本发明实施例提供的数据传输方法的流程示意图; 图 6为本发明另一实施例提供的数据传输方法的流程示意图; 图 7为本发明又一实施例提供的数据传输方法的流程示意图; 图 8为本发明再一实施例提供的数据传输方法的流程示意图; 图 9为本发明实施例提供的无线通信节点的结构示意图; 图 10为本发明另一实施例提供的无线通信节点的结构示意图; 图 1 1 为本发明再一实施例提供的无线通信节点的结构示意图; 图 12为本发明实施例提供的基站的结构示意图;
图 13为本发明另一实施例提供的基站的结构示意图;
图 14为本发明实施例提供的另一无线通信节点的结构示意图; 图 15为本发明实施例提供的另一基站的结构示意图;
图 16为本发明另一实施例提供的基站的结构示意图;
图 17为本发明实施例提供的系统结构示意图;
图 18为本发明另一实施例提供的系统结构示意图。
具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术 方案进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明 一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本 领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他 实施例, 都属于本发明保护的范围。
现有的部分网络的回程时延较大, 带宽也较小, 这类网络的回 程的时延和带宽不理想, 是受限制的。 为了在受限制的回程中, 有 效的提高用户设备的吞吐量, 在一种新的网络架构中, 该网络架构 包括基站, 无线通信节点 (该无线通信节点具有调度功能) 和 UE
( User Equipment , 用户设备), 其中, UE与基站建立控制面连接, 如 RRC ( Radio Resource Control , 无线资源控制协议) 连接, 与无 线通信节点建立用户 面连接, 对于同一个 UE 的满足某种 Qo S
( Quality of Service , 服务质量) 的业务, 基站将数据发送到一个或 多个无线通信节点进行传输, 这样一来, 无线通信节点也可以实现 与 UE的数据传输, 从而提升 UE的吞吐量。 进一步地, 所述基站还 可以与 UE建立用户面连接。 示例性的, 基站, 可以是宏基站; 无线通信节点具有资源调度 功能, 可以是宏基站、 小基站、 微基站、 中继站 、 家庭基站或者具 有调度功能的 TP ( Transmission Point , 传输点)。
本发明实施例提供的数据传输方法和装置应用于上述网络架 构, 以保证上述网络中不同装置间的分组数据汇聚协议层与无线链 路控制层的层间交互, 进而保证数据的传输要求, 以提升 UE 的吞 吐量。
具体地, 本发明实施例中, 基站和无线通信节点的协议栈如图 1 所示。 图 1所示为终端、 基站、 和无线通信节点之间的用户面协议 栈的示意图。 其中, 终端和基站之间, 以及终端和无线通信节点之 间的接口均为无线接口, 例如 Uu接口; 基站侧 Uu接口的用户面协 议栈从底层到高层包括: L 1层 (物理层)、 MAC ( Media Access Control , 媒体访问控制 ) 层, RLC ( Radio Link Control , 无线链路控 制) 层以及 PDCP ( Packet Data Convergence Protocol , 分组数据汇 聚协议)层。 无线通信节点侧 Uu接口的用户面协议栈从底层到高层 包括: L 1层、 MAC层和 RLC层。 基站和无线通信节点的接口为有 线接口或者无线接口, 图中假设基站与无线通信节点的接口为 X3 接口,该 X3接口的用户面协议栈从底层到高层包括 L 1层、 L2层( 即, 数据链路层)、 IP ( Internet Protocol , 网络之间互连的协议)层, UDP ( User Datagram Protocol , 用户数据才艮协议)层、 以及 GTP-U ( GPRS Tunnelling Protocol for the User plane , 用户层面的 GPRS隧道协议 ) 层。 需要说明的是, 图 1 中, 基站和无线通信节点之间的连线仅表 示相同协议层之间的对应关系, 而非实际的连接关系。 本发明实施例提供的数据传输的控制方法, 可以适用于包括基 站, 无线通信节点, 即无线通信节点和 UE的系统中, 如图 2所示, 该方法为无线通信节点侧的方法, 该方法步骤包括:
S 101、 无线通信节点接收基站发送的数据包, 其中, 数据包是用 基站的 PDCP PDU ( Protocol Data Unit , 协议数据单元) 生成的。
本发明实施例中, 基站将数据包发送给无线通信节点, 由无线通 信节点将数据包传输给 UE。 然而, 基站需要向无线通信节点发送 PDCP PDU ,无线通信节点需要将 PDCP PDU生成数据包之后发送给 UE。 然而, 基站和无线通信节点之间的交互不同于同一个设备内的 PDCP层和 RLC层的交换, 基站的 PDCP层与无线通信节点的 RLC 层之间没有接口, 不能直接通信。 因此, 本发明实施例中, 基站的 PDCP协议实体生成一个 PDCP PDU ,然后把该 PDCP PDU封装在一 个传输协议层 ( 比 ^口 GTP-U ( GPRS tunnelling protocol for the user plane , 用户层面的 GPRS隧道协议)) 的数据包中。 基站利用传输协 议层隧道将该数据包传输给无线通信节点的传输协议层, 其中, 该 传输协议层隧道与用户终端的标识和承载标识关联。 无线通信节点 的传输协议层 ( 比如 GTP-U ) 获知与该隧道关联的用户终端的标识 和承载标识后, 将数据包对应的 PDCP PDU传递给该用户终端的标 识和承载标识对应的 RL C协议实体。
上述的基站和无线通信节点之间的交互方式包括但不限于以下 三种:
第一, 基站与无线通信节点之间, 在传输协议层 ( 比如 GTP-U ) 为每个 UE的每个承载建立一个唯一的基站与无线通信节点间的传 输隧道, 每个基站与无线通信节点间的传输隧道有一个唯一的传输 隧道标识。 UE ID ( IDentity , 身份标识号码) 和承载标识, 与基站 与无线通信节点间传输隧道标识的对应关系, 在隧道建立过程中关 联。
第二, 基站与无线通信节点之间, 在传输协议层 ( 比如 GTP-U ) 为每个 UE建立一个或多个基站与无线通信节点间传输隧道,每个基 站与无线通信节点间的传输隧道有一个唯一的传输隧道标识。 UE ID 与传输隧道标识的对应关系, 在隧道建立过程中关联。 传输数据时, 在传输协议层 ( 比如 GTP-U ) 的 PDU中增加 RB ( Radio Bearer , 无 线承载) 的标识, 用于区别基站与无线通信节点间同一传输隧道中 传输的不同承载的数据。
第三, 基站与无线通信节点之间, 在传输协议层 ( 比如 GTP-U ) 为所有 UE建立一个或多个基站与无线通信节点间传输隧道,每个基 站与无线通信节点间的传输隧道有一个唯一的传输隧道标识。 UE ID 和承载标识, 与隧道标识的没有对应关系。 传输数据时, 在传输协 议层 (比如 GTP-U ) 的 PDU中增加 UE ID和 RB标识 , 用于区别基 站与无线通信节点间同一传输隧道中传输的不同 UE的不同承载的 数据。
S 102、 无线通信节点获取数据包中的 PDCP PDU作为 RLC SDU
( Service Data Unit , 业务数据单元)。
具体的, PDCP PDU是基站的 PDCP层生成的。 数据包是基站的 传输协议层, 如 GTP-U ( General Packet Radio Service Tunnelling Protocol for the user plane , 用户层面的 GPRS隧道协议) 将 PDCP PDU封装后生成的。
进一步的 , 在 S 101 之前, 基站根据从 MME ( Mobility Management Entity , 移动管理 实体 ) 接收的 UE ID , E-RAB
( Evolved-Radio Access Bearer , 演进型无线用户平面的 载) 标识 和每个 E-RAB的 Qos属性, 为不同 UE的不同承载生成对应的无线 承载, 其中包括 PDCP协议实体和 PDCP协议实体对应的 RB ( Radio bear , 无线承载) ID、 或 LCH ( Logical Channel , 逻辑信道) ID。 例如, 第一 UE请求观看视频, 基站在收到 MME的请求后, 会生成 承载对应的 PDCP实体, 其中, 所述承载为该第一 UE的该视频业务 对应的 7 载。
相应的, 无线通信节点接收基站的配置, 所述配置包括 UE ID、 承载标识、 以及 RLC层的配置; 用于为不同用户终端的不同承载创 建对应的无线承载, 其中包括 RLC 协议实体和 RLC 协议实体对应 的 RB ID、 或 LCH ID。 其中, 承载标识可以为 RB ID、 E-RAB ID ( E-UTRAN Radio Access Bearer , E-UTRAN无线接入承载 ID )、 EPS Bearer ID ( Evolved Packet System Bearer ID , 演进的分组系统 承载标识) 或 LCH ID。 例如, 针对请求看视频的第一 UE , 无线通 信节点会生成承载对应的 RLC 实体, 所述承载为该第一 UE的该视 频业务对应的承载(需要说明的是, 无线通信节点中的所述第一 UE 的所述视频业务对应的 7 载与所述基站中的所述第一 UE 的所述视 频业务对应的 7 载相同 )。
之后, 基站通过该 PDCP实体生成 PDCP PDU并将 PCDP PDU 传输给所述基站的传输协议层, 以使基站的传输协议层生成并发送 所述数据包至无线通信节点, 之后, 无线通信节点通过该 RLC实体 获取无线通信节点的传输协议层传输的 PCDP PDU。
5103、 无线通信节点向 UE发送使用 RLC SDU生成的数据。 其中, 基站和 UE建立控制面连接, 无线通信节点与 UE建立用 户面连接。 可选地, 基站和 UE还可以同时建立控制面连接。
需要说明的是, 使用 RLC SDU 生成的数据为无线通信节点的 RLC PDU。 UE与基站建立了控制面连接, 与无线通信节点建立了数 据面连接, 无线通信节点的 RLC层可以对 RLC SDU进行分割级联 形成 RLC PDU , 也可以不进行分割级联, 此处以分割级联举例说明, 其他情况也在保护范围内, 如 RLC SDU较大, 无线通信节点将 RLC SDU分为三个较小的数据包, 将这三个较小的数据包作为 RLC PDU 发送给 UE;如 RLC SDU较小,无线通信节点则可以将多个 RLC SDU 级联为一个较大的数据包,并将该数据包作为 RLC PDU发送给 UE; 如 RLC SDU大小合适, 无线通信节点将 RLC SDU作为 RLC PDU 发送给 UE。 如果 RLC SDU大小合适, 则可以将一个 RLC SDU作为 RLC PDU发送给 UE。
本发明实施例提供的数据传输的控制方法中, 无线通信节点仅 需提供 PDCP层、 基站仅需要提供 RLC层, 就可以实现无线通信节 点与基站的交互, 由于基站和无线通信节点均为多点协同 UE 传输 数据, 因此提升了 UE的吞吐量。 进一步的, 在另一实施例中, 如图 3 所示, 在执行了上述步骤 S 103之后, 还可以依次执行步骤 S 104和步骤 S 105。
5104、 无线通信节点接收 UE 发送的第二状态报告, 其中, 第 二状态报告用于指示 UE 是否成功接收到使用 RLC SDU 生成的数 据。 需要说明的是, 若无线通信节点接收 UE 发送的第二状态报告 为 ACK ( Acknowledgement , 确认指示), 则第二状态报告用于指示 UE成功接收到使用 RLC SDU生成的数据;若无线通信节点接收 UE 发送的第二状态报告为 NACK ( Negative Acknowledgement , 否认指 示), 则第二状态报告用于指示 UE 没有成功接收到使用 RLC SDU 生成的数据, 无线通信节点会重传使用 RLC SDU 生成的数据, 如 RLC PDCP给 UE , 直到 RLC PDCP达到最大重传次数或者最大重传 时间, 无线通信节点就判断该 RLC PDCP未发送成功, 即使用 RLC SDU生成的数据未发送成功。
不妨假设无线通信节点中预设的最大重传次数为 5次, 无线通 信节点第一次发送 RLC PDU后,如果接收 UE发送的针对 RLC PDU 的第二状态报告为 NACK ,无线通信节点会重传该 RLC PDU给 UE , 若无线通信节点在第五次重传该 RLC PDU后, 接收到 UE发送的针 对 RLC PDU 的第二状态 告仍为 NACK , 则无线通信节点判断该 RLC PDU未成功发送。 若无线通信节点在第三次重传该 RLC PDU 后, 接收到 UE发送的针对 RLC PDU的第二状态报告为 ACK , 无线 通信节点停止重传该 RLC PDU , 并认为该 RLC PDU成功发送; 或 者, 无线通信节点中预设的时间为 1 秒, 如果无线通信节点 1 秒内 一直接收针对一个 RLC PDU 的第二状态报告为 NACK , 则确定该 RLC PDU传输失败, 但 1 秒内不论接收到几次针对这个 RLC PDU 的 NACK , 只要接收到第二状态报告为 ACK 即可确定该 RLC PDU 成功发送。
进一步的,如果该 RLC PDU是 RLC SDU分割形成的,就算 RLC SDU分割形成的其他 RLC PDU成功发送, 而该 RLC PDU未成功发 送, 无线通信节点依然可以确定 RLC SDU未成功发送; 如果该 RLC PDU是 RLC SDU级联形成的, 该 RLC PDU未成功发送, 无线通信 节点则确定级联的多个 RLC SDU均未成功发送。
另外, 如果 RLC PDU是 RLC SDU分割形成的, RLC SDU分 割形成的所有 RLC PDU成功发送,无线通信节点依然可以确定 RLC SDU成功发送; 如果该 RLC PDU是 RLC SDU级联形成的, 该 RLC PDU成功发送, 无线通信节点则确定级联的多个 RLC SDU均成功 发送。
S 105、 无线通信节点向基站发送第一状态报告。
其中, 第一状态报告用于指示 PDCP PDU是否发送成功, 其中, 如果第二状态报告指示 UE成功接收到使用 RLC SDU生成的数据, 第一状态报告指示 PDCP PDU发送成功;如果第二状态报告指示 UE 没有成功接收到使用 RLC SDU 生成的数据, 第一状态报告指示 PDCP PDU没有发送成功。
进一步的, 针对 AM ( Acknowledged Mode , 确认模式)的数据, 可以根据不同的规则向基站发送第一状态报告, 其中, 第一状态报 告是可以指示 RLC SDU是否成功发送的, 即第一状态报告指示的是 该状态报告传输的内容是成功发送和 /或者未成功发送的 RLC RLC SDU的标识。
可以通过提前设置一个第一定时时间来实现第一状态报告指示 RLC SDU是否成功发送; 或者可以用第一状态报告消息体中明确的 1 比特来表明, 例如设置于第一状态报告的数据串中, 某一特定比 特位上的 1或 0指示 RLC SDU是否成功发送:如 1表示该状态报告 消息传输的内容是成功发送的 RLC SDU的标识, 比特位为 0表示第 一状态报告传输的内容是未成功发送的 RLC SDU的标识;或者可以 通过消息名称隐含的表示第一状态报告传输的内容, 或者也可以在 协议中规定, 以使得基站收到第一状态报告消息就知道传输的内容。
进一步的, 第一状态报告可以包括下述内容:
第一状态报告可以可以仅包含 RLC SDU的标识, 其中, 该标识 可以为 PDCP PDU的 PDCP序歹' j号, 可以通过解码解出该序列号; 或者, 标识也可以是与基站约定的所述 RLC SDU 的编号, 如 RLC SDU1、 2、 3、 4、 5 对应 PDCP PDU 的 1、 3、 5、 7、 9 , 可以根据 RLC SDU2成功发送或未成功发送确定 PDCP PDU3成功发送或未成 功发送。 在这种情况下, RLC SDU的标识所属的 UE ID , 以及 UE 的承载 ID (例如, 可以为 RB ID , E-RAB ID , EPS Bearer ID等) 可 以通过无线通信节点与基站间的传输隧道来识别, 即传输协议层( 比 如 GTP-U )为每个 UE的每个承载建立一个唯一的基站间传输隧道, 每个基站间传输隧道有一个唯一的基站间传输隧道标识, UE ID 和 承载标识, 与基站间传输隧道标识的对应关系, 在隧道建立过程中 关联。 其中, 该隧道用两个基站的传输层地址和隧道终端标识来标 识, 不妨假设有两个 UE , 每个 UE有两个 DRB或者 E-RAB , 关于 UE1 的 DRB 1 或者 E-RAB 1 的第一状态报告在隧道 1 中传输, UE1 的 DRB2或者 E-RAB2的第一状态报告在隧道 2中传输; UE2的 DRB 1 或者 E-RAB 1 第一状态报告在隧道 3 中传输, UE2 的 DRB2 或者 E-RAB2第一状态报告在隧道 4 中传输,这种传输方式使得基站收到 第一状态^艮告就知道第一状态 告中的标识所属的 UE 以及 UE 的 DRB ID。
进一步的, 第一状态报告状态除了上述标识之外, 还可以包括 承载标识, 需要说明的是, 若第一状态报告携带有承载 ID , 表明第 一状态报告的 UE 的标识可以通过可以通过无线通信节点与基站间 的传输隧道来识别, 即: 传输协议层 ( 比如 GTP-U ) 为每个 UE 建 立 (一个或多个) 基站间传输隧道, 每个基站间传输隧道有一个唯 一的基站间传输隧道标识, UE ID 与基站间传输隧道标识的对应关 系, 在隧道建立过程中关联。 不妨假设有两个 UE , 每个 UE有两个 DRB或者 E-RAB , UE 1 的 DRB 1和 DRB2(或者 E-RAB 1和 E-RAB2 ) 的第一状态报告在隧道 1 中传输; UE2 的 DRB 1 和 DRB2 (或者 E-RAB 1和 E-RAB2 ) 的第一状态报告在隧道 2 中传输。
若第一状态报告中携带 UE ID和承载 ID , 则基站可以明确知 道第一状态报告中的标识所属的 UE以及 UE的 DRB ID或者 E-RAB ID。 进一步的, 该第一状态报告可以通过基站间的控制面接口或者 基站间传输协议层的传输隧道来传输。
需要说明的是, 如果第一状态报告通过基站间传输协议层的传 输隧道来传输, 为了区分基站间传输协议层的传输隧道传输的内容 (可能为 PDCP PDU封装成的 GTP-U数据包, 或者由第一状态报告 封装成的 GTP-U数据包,或者为丟弃消息封装成的 GTP-U数据包 ) , 还应在 GTP-U 数据包中加入类型指示包头, 用于指示 GTP-U的数 据包传输的数据类型。
进一步的, 如果第一状态报告中只包含一个 RLC SDU的标识, 为了降低第一状态报告消息的开销,如果 RLC SDU的标识与前一个 第一状态报告中 RLC SDU的标识具有连续性,第一状态报告中比特 位置 1表示该 RLC SDU 标识是上一个第一状态报告中 RLC SDU的 标识的继续。
如果第一状态报告包含多个 RLC SDU的标识,为了降低第一状 态报告消息的开销, 第一状态报告包括不连续的 RLC SDU的标识, 一组连续值中最小或者最大的 RLC SDU的标识, 偏置值, 其中该偏 置值表示一组连续值中连续的 RLC SDU个数,或者为一组连续值中 连续的 RLC SDU的个数减一
或者, 若第一状态 ^艮告中包含至少两个 RLC SDU的标识, 则所 述 RLC SDU的标识包括成功或未成功发送的最小 RLC SDU的标识 和比特串。 其中, 每个比特串中每一个比特位表示的是成功或未成 功发送的最小 RLC SDU之后的 RLC SDU 的状态。 该状态为 RLC SDU是否成功发送。
示例性的, 无线通信节点可以根据不同的规则向基站发送第一 状态报告可以为:
无线通信节点基于事件触发第一状态报告, 即无线通信节点若 可以检测 RLC层确定存在成功或者未成功发送的 RLC SDU , 则向 基站发送第一状态报告, 以使得基站根据第一状态报告确定 PDCP PDU成功发送情况。
或者, 无线通信节点也可以基于周期触发状态报告, 即无线通 信节点设定一个周期, 如 10秒, 每 10秒内如果根据 RLC PDU成功 发送传输情况确定 RLC SDU成功发送或者未成功发送,则向基站发 送第一状态报告, 以使得基站根据第一状态报告确定 PDCP PDU成 功发送情况。
或者, 无线通信节点也可以基于请求触发状态报告, 即无线通 信节点接收到基站发送的请求消息后, 则向基站发送第一状态报告, 以使得基站根据第一状态报告确定 PDCP PDU成功发送情况。
进一步的(在上述几种情况的基础上;), 如果第一状态报告包含 未成功发送 RLC SDU的标识,为了让基站确定成功发送 PDCP PDU , 还应有以下预设规则:
在 S 101 之前, 先接收 OAM ( Operation Administration and
Maintenance , 运营管理与维护) 发送的第一定时时间。 其中, 第一 定时时间针对无线通信节点设置一个值。
或者, 在 S 101之前, 先接收基站发送的第一定时时间。 其中, 第一定时时间针对无线通信节点设置一个值; 或者, 接收第一定时 时间的同时还可以接收 UE ID , 表明该第一定时时间可以针对不同 UE设置不同或者相同的值; 或者, 接收第一定时时间的同时还可以 接收 UE ID和 DRB ID或者 E-RAB ID , 表明该第一定时时间还可以 针对不同 UE的不同 DRB或者 E-RAB设置不同或者相同的值。
无线通信节点为相应 UE的 DRB ID或 E-RAB ID的每一个 RLC SDU维护一个第一定时器, 第一定时器的时间为第一定时时间, 该 第一定时器的作用是在该第一定时器维护的第一定时时间内, 如果 该 RLC SDU未成功发送, 向基站发送状态报告, RLC SDU成功发 送则不发送状态报告。
进一步的, 由于基站和无线通信节点之间发送数据是会产生时 延, 可以根据基站和无线通信节点的具体设置位置等情况确定一个 时延值, 在基站中以这个时延值, 更新第一定时时间, 如在设定的 预设第一时间中加上两倍的数据时延时间等。
示 例 性 的 , 除 上 述 情 况 外 , 针 对 AM 或 者 UAKM ( Unacknowledged Mode , 非确认模式) 的数据, 无线通信节点若接 收到基站的丟弃消息, 则根据丟弃消息确定需要丟弃的数据, 并丟 弃该数据。 进一步的, 丟弃消息可以包括 RLC SDU的标识, 标识可 以是基站向无线通信节点发送的 PDCP PDU包头序列号, 也可以是 与无线通信节点约定的 RLC SDU的编码, 如 RLC SDU1、 2、 3、 4、 5对应 PDCP PDU的 1、 3、 5、 7、 9 , 可以根据 RLC SDU2成功发送 确定 PDCP PDU3成功发送。 若包含至少一组连续的值时, 为了降低 丟弃消息的开销。 丟弃消息的内容可以为: 不连续的 RLC SDU的标 识, 一组连续值中最小或者最大的 RLC SDU的标识, 偏置值, 其中 该偏置值表示一组连续值中连续的 RLC SDU个数 /或者个数减一。
进一步的, 丟弃消息还可以包括 UE ID、 UE的 DRB, 或者 UE ID和 UE的 DRB;或者丟弃消息还可以包括 UE ID、 E-RAB ID , 或 者 UE ID和 E-RAB ID , 以使得基站确定 RLC SDU的标识所属 UE 以及 UE的 DRB ID或 E-RAB ID。
值得指出的是, 丟弃消息中的传输方法与第一状态报告的传输 方法相同, 在此不再赘述。
或者, 可以接收一个第二定时时间, 或者, 在接收第二定时时 间的同时还可以接收 UE ID和 DRB ID (或者 E-RAB ID ) , RLC层 使用第二定时器维护第二定时时间。 第二定时时间可以在配置无线 通信节点或激活无线通信节点时, 由基站发送给无线通信节点, 第 二定时时间可以针对不同 UE的不同 DRB或者 E-RAB设置不同或者 相同的值。无线通信节点根据第二定时时间针对每个 UE及 UE对应 的 DRB ID或 E-RAB ID的 RLC SDU设置第二定时器。 该第二定时 器的时间为第二定时时间。 当需要丟弃的数据存放的时间超过上述 第二定时器维护的第二时间超时后, 无线通信节点丟弃相应的 RLC SDU。
本发明实施例提供的数据传输的控制方法, 无线通信节点仅需 提供 PDCP层、 基站仅需要提供 RLC层, 就可以实现无线通信节点 与基站的交互, 且, 可以根据第一状态报告确定交互的数据是否发 送成功。 因此在提升了 UE 的吞吐量的同时, 基站可以确定发往无 线通讯节点的数据包是否发送成功, 以避免重复发送等状况, 提高 了系统性能。 本发明实施例提供的数据传输的控制方法, 可以适用于存在基 站, 无线通信节点和 UE 的系统中, 如图 4 所示, 该方法为基站侧 的方法, 该方法步骤包括:
S201、 无线通信节点接收基站发送的数据包。
需要说明的是, UE与无线通信节点建立了数据面连接。 与基站 建立了控制面连接。 在确认模式下,基站发送 PDCP层的 PDCP PDU 至无线通信节点 RLC 层之后可以通过收到无线通信节点 RLC 层回 复的第一状态报告, 确定是否成功发送 PDCP PDU , 也可以通过下 述方法确定 PDCP PDU是否成功发送:
对于确认模式的数据, 基站可以接收 OAM 发送的第一定时时 间并发送给无线通信节点。 或者, 基站为每一个 UE的 DRB ID或者 E-RAB ID的 PDCP PDU维护一个第一定时器,该第一定时器的时间 为更新了的第一定时时间, 更新了的第一定时时间大于等于原来的 第一定时时间, 其中, 更新了的第一定时时间可以是第一定时时间 与偏差值的和, 其中, 偏差值大于或者等于基站与无线通信节点间 回程链路时延的两倍, 这主要是考虑到回程链路时延对于数据包传 输的影响。 该第一定时器的作用是在该第一定时器内, 即第一定时 器维护的第一定时时间内, 基站收到无线通信节点发来的状态报告 类型为未成功发送的第一状态报告中, 若没有上述的 PDCP PDU的 标识, 则认为该 PDCP PDU成功发送。
这样一来, 当 PDCP PDU在无线通信节点未成功发送时, 基站 通过本基站的 RLC层或者其他无线通信节点重传该 PDCP PDU。 或 者, 当 UE从基站切换到其他基站时, 原基站将緩存的 UE数据发送 给目标基站, 可以保证数据的无损传输。
进一步的, 对于确认模式或者非确认模式的数据基站向无线通 信节点发送丟弃消息。 其中, 丟弃消息包括 RLC SDU的标识。
需要说明的是,基站还可以为每一个 PDCP PDU所对应的 PDCP SDU维护一个第二定时器, 即超时定时器, 该超时定时器的长度为 一个第二定时时间, 如 10秒, 超过 10秒则向无线通信节点发送丟 弃消息。 其中, 第二定时时间是针对每一个 UE的 DRB ID或 E-RAB ID设定的。
或者是, 基站收到 UE 端发来的 PDCP状态报告, PDCP状态 报告指示 PDCP PDU接收成功。 基站发送一个丟弃消息给无线通信 节点, 以使得无线通信节点根据这个丟弃消息丟弃 RLC SDU , 其中, 丟弃消息的内容在上述实施例中描述, 在此不再展开。 这样一来, 无线通信节点可以不需緩存大量的数据, 释放了无线通信节点的存 储空间。
或者基站可以发送第二定时时间给无线通信节点。 第二定时时 间的大小为为 PDCP PDU所对应的 PDCP PDU所对应的 PDCP SDU 的超时定时器的时间。 以使得无线通信节点在第二定时器维护的第 二定时时间超时后丟弃第一 SDU。 这样一来, 无线通信节点可以不 需緩存大量的数据, 释放了无线通信节点的存储空间。 本发明实施例提供的数据传输的控制方法,无线通信节点接收 基站发送的数据包, 其中, 数据包是用基站的 PDCP PDU生成的, 无线通信节点获取数据包中的 PDCP PDU作为 RLC SDU ,并向 UE 发送使用 RLC SDU生成的数据。 这样一来, 基站中仅需要设置有 RLC层, 即可以与无线通信节点的 PDCP层进行交互, 进而保证数 据在基站与无线通信节点公约的确认模式下或非确认模式下,根据 不同模式需求实现数据的传输要求,且由于基站和无线通信节点多 点协同用户设备传输数据, 因此提升了用户设备的吞吐量。 本发明另一实施例提供的数据传输方法, 如图 5所示, 本实施 例以确认模式下, 基站为宏基站, 无线通信节点为 TP , 宏基站和 TP 共同维护一个默认成功发送的第一定时器为例进行说明, 但不 以此做任何限定, 该方法步骤包括:
5301、 宏基站根据接收的 OAM向 TP发送的第一定时时间。
5302、 宏基站针对 TP , 或者针对 TP 的不同 UE , 或者针对每 个不同 UE及不同 UE的 DRB ID或 E-RAB ID分别配置第一定时时 间。
指的是出的是, 步骤 S301 与步骤 S302 择一执行, 步骤 S303 在步骤 S302后执行, 不与 S301 同时执行。
需要说明的是, 如果宏基站是根据每个 UE请求业务的 Qos确 定 UE的 DRB ID或 E-RAB ID , 则针对每个 UE对应的 DRB ID或 E-RAB ID分别配置第一定时时间。 如针对第一 UE的 3 兆带宽下的 视频请求配置第一定时时间为 2 毫秒; 针对第一 UE 的 2 兆带宽、 高时延下的视频请求配置第一定时时间为 5毫秒等。
如果宏基站接收到 0AM 发送的第一定时时间, 则根据第一定 时时间进行配置, 可以向 TP转发或不转发第一定时时间。
5303、 宏基站向 TP发送第一定时时间。
需要说明的是, 第一定时时间可以针对不同 UE 设置不同或者 相同的值,也可以针对不同 UE的不同 DRB或者 E-RAB设置不同或 者相同的值, 还可以针对无线通信节点设置一个值。
需要说明的是, 宏基站也可以不向 TP 发送第一定时时间, 而 是由 0 AM向 TP发送第一定时时间, 本实施例以宏基站向 TP发送 第一定时时间为例进行说明, 由 0AM 向 TP发送第一定时时间也 在保护范围之内, 不以此为限定。
5304、 TP接收宏基站发送的第一定时时间。
5305、 TP根据第一定时时间针对每个 UE及 UE对应的 DRB ID 或 E-RAB ID分别设置第一定时时间。
5306、 宏基站向 TP发送数据包。
其中, 该数据包是用宏基站的 PDCP PDU生成的。
5307、 TP接收宏基站发送数据包。
5308、 TP获取数据包中的 PDCP PDU作为 RLC SDU。
需要说明的是, 由 PDCP层发送到 RLC层的 PDCP PDU在未经 过 RLC层的处理之前,为 RLC层的 RLC SDU。由于宏基站发送 PDCP 层的 PDCP PDU即 RLC层的 RLC SDU在 TP的 RLC层没有经过处 理,所以 PDCP PDU的包头的序列号与 RLC SDU包头的序列号是一 样的,可以根据该序列号识别 PDCP PDU与 RLC SDU是否携带着相 同的数据信息。 5309、 TP向 UE发送使用 RLC SDU生成的数据。
示例性的, 若 RLC SDU较大, TP将 RLC SDU分割为三个数据 包, 三个数据包分别记作 RLC PDU1 , RLC PDU2和 RLC PDU3发 送至 UE , 以使得 UE根据 RLC PDU1 , RLC PDU2和 RLC PDU3是 否成功传输向 TP反馈第二状态报告。
5310、 TP接收 UE发送的第二状态报告。
示例性的,第二状态报告用于指示 UE是否成功接收到使用 RLC SDU生成的数据。如果 TP接受到 UE返回的 RLC PDU的 RLC PDU1 , RLC PDU2 和 RLC PDU3 的 第 二 状 态 报 告 均 为 ACK ( Acknowledgement , 确认消息) 则确定 RLC PDU发送成功, 否则 未发送成功。 其中, TP可以设置最大重传次数, 如最大重传次数设 置为 5 , RLC PDU2传输 5次都反馈的第二状态报告均为 NACK ( Un acknowledgement , 非确认消息), 则确定 RLC PDU2 未发送成功, 进而确定分割出 RLC PDU2的 RLC PDU未发送成功。
进一步的, TP可以通过 RLC PDU是否成功发送确定接收到的 RLC SDU是否成功发送, 并可以根据 RLC SDU是否成功发送告知 宏基站,使得宏基站根据 RLC SDU是否成功发送确定 PDCP PDU是 否发送成功。
5311、 TP向宏基站发送第一状态报告。
值得指出的是, 第一状态报告用于指示 PDCP PDU是否发送成 功, 其中, 如果第二状态报告指示 UE成功接收到使用 RLC SDU生 成的数据, 第一状态报告指示 PDCP PDU发送成功; 如果第二状态 报告指示 UE没有成功接收到使用 RLC SDU生成的数据, 第一状态 报告指示 PDCP PDU没有发送成功。
需要说明的是, 本实施例提供的是 TP 和宏基站处于默认发送 成功的模式的数据传输的控制方法, 即宏基站如果在第一预设时间 内未收到第一状态报告则确定发送成功的模式。 TP 如果确认 RLC PDU发送成功并确定分割级联出该 RLC PDU 的 RLC SDU发送成 功, 则不向宏基站发送第一状态报告; TP如果确认 RLC PDU未发 送成功并确定分割级联出该 RLC PDU的 RLC SDU未发送成功, 则 向宏基站发送第一状态报告。
第一状态报告仅包括用于标识 RLC SDU的信息; 或者, 第一状 态报告除了用于标识 RLC SDU 的信息外还包括用户设备的 UE ID 和 /或 RB ID。 其中, 用于标识 RLC SDU的信息包括 RLC SDU的标 识; 其中, 标识为 RLC SDU 包头的标识, 或标识为与基站约定的 RLC SDU的编号。
示例性的,如果第一状态报告中用于标识 RLC SDU的信息包含 至少一组连续的值时, 为了降低状态报告消息的开销。 第一状态报 告可以为: 不连续的 RLC SDU的标识, 一组连续值中最小或者最大 的 RLC SDU的标识, 偏置值, 其中该偏置值表示一组连续值中连续 的 RLC SDU个数数值或者该个数减一的数值。
示例性的, 当未成功传输的 RLC SDU的序列号与 TP上一次发 送的 RLC SDU状态报告中 RLC SDU序列号连续时, 用 l bit代表该 RLC RLC SDU的序列号的连续性, 即如果上一次 TP发送的序列号 为 2 , 而本次发送的序列号为 3 时, 由于 1 1 占用了两个比特位, 则 可以预设一个共知规则, 在状态报告中一个特定的比特为上用 1 标 识本次的序列号与上次发送的序列号连续。
值得指出的是, 若 TP —次发送的第一状态报告携带多个第一 SDU的序列号, 当序列号连续时, 可以在第一状态报告中设置一个 偏置值, 并在连续号码中选择最大或者最小的 RLC SDU序列号。 如 偏置值为连续 RLC SDU总个数减一,假如第一状态报告中需要发送 100 到 109 十个序列号, 则可以将偏置值设置为 9 , 第一.状态报告 只携带最小值 100 和偏置值 9 , 以使得宏基站以 100 为基数, 每次 叠加 1 叠加 9此得到这十个序列号, 此处只以此举例, 并不做任何 限定。
进一步的, TP为了让宏基站确认未成功发送 PDCP PDU可以 设定:在接收 0 AM或者宏基站配置的时间后,为相应 UE的 DRB ID 或 E-RAB ID的每一个 RLC SDU维护一个第一定时器, 第一定时器 的长度为第一定时时间, 该第一定时器的作用是在该第一定时时间 内, 如果该 RLC SDU未成功发送, 向宏基站发送第一状态报告, 消 息中包含该 RLC SDU的标识, 该 RLC SDU成功发送则不发送第一 状态报告。
值得指出的是, 宏基站可以接收 OAM发送的第一定时时间并 发送给 TP , 宏基站和 TP接收第一定时时间后的配置方法, 在上述 实施例中已经描述, 在此不再赘述。
同样的, 宏基站为 RLC SDU相应每一个 PDCP PDU维护一个 第一定时器, 该第一定时器的时间为更新后的第一定时时间, 大于 等于上述配置的第一定时时间, 更新后的第一定时时间可以为上述 配置时间与偏差值的和, 其中, 偏差值大于或者等于宏基站与 TP 间回程链路时延的两倍, 这主要是考虑到回程链路时延对于数据包 传输的影响。 以使得在更新后的第一定时时间内收到第一状态报告, 则可以判断 PDCP PDU未成功发送; 若在第一定时时间内未收到该 PDCP PDU对应的 RLC SDU的标识 , 则判断 PDCP PDU成功发送。
5312、 宏基站接收 TP发送的第一状态报告。
需要说明的是, 如果在第一定时器到时时, TP没有接收到 UE 发送的第二状态报告, TP向宏基站发送第一状态报告, 其中, 第一 状态报告指示 RLC SDU未成功发送; 第二状态报告用于指示 UE是 否成功接收到使用 RLC SDU生成的数据;
或者, 在第一定时器到时前, TP接收 UE发送的第二状态报告, 其中, 第二状态报告用于指示 UE是否成功接收到使用 RLC SDU生 成的数据;
如果第二状态报告指示 UE没有成功接收到使用 RLC SDU生成 的数据包, TP向宏基站发送第一状态报告, 其中, 第一状态报告指 示 RLC SDU未成功发送; 或者, 如果第二状态报告指示 UE成功接 收到使用 RLC SDU生成的数据包, TP不向宏基站发送第一状态报 告。 宏基站可以接收上述 TP发送的第一状态报告。
5313、宏基站根据第一状态报告确定 PDCP PDU是否发送成功。 示例性的, 宏基站如果在更新后的第一定时时间内接收到 TP 发送的第一状态报告, 若第一状态报告中携带有一个 PDCP PDU的 标识, 则确定该 PDCP PDU 未成功发送; 宏基站如果在针对一个 PDCP PDU的更新后的第一定时时间内未接收到 TP发送的第一状态 报告, 则确定这个 PDCP PDU成功发送。
值得指出的是, 如果宏基站接收到的第一状态报告确定 PDCP PDU未成功发送,则可以选择通过宏基站和 UE的 Uu接口将没有成 功传输的 PDCP PDU和下一次准备发送的 PDCP PDU传输给 UE , 而不再通过 TP传输; 或者, 宏基站可以重新选择一个新的 TP , 使 新的 TP与 UE建立连接并进行数据的传输: 向新的 TP发送激活指 示, 消息包括: UE ID , UE请求业务的 Qos对应的 DRB ID或 E-RAB ID , 以及 TP 的 RLC层配置信息。 新的 TP收到宏基站的激活指示, 按照配置要求进行配置。
进一步的, 如果 UE 进入了另一个宏基站的覆盖范围, 则本宏 基站根据 PDCP PDU传输成功的情况生成 PDCP PDU的序列号报告 和 /或数据发给目标宏基站, 将 UE切入新的宏基站中, 以使得新的 宏基站对 UE所需的业务进行支持。
本发明实施例提供的数据传输的控制方法, TP接收宏基站发送 的数据包, 其中, 数据包是用宏基站的 PDCP PDU生成的, TP获取 数据包中的 PDCP PDU作为 RLC SDU ,并向用户设备发送使用 RLC SDU生成的数据。 这样一来, 宏基站中仅需要设置有 RLC层, 即可 以与 TP的 PDCP层进行交互, 进而保证数据在宏基站与 TP公约的 确认模式下或非确认模式下, 根据不同模式需求实现数据的传输要 求, 且由于宏基站和 TP多点协同用户设备传输数据, 因此提升了用 户设备的吞吐量。 本发明另一实施例提供的数据传输方法, 如图 6所示, 本实施 例以不维护第一定时器, 维护第二定时器, 基站为宏基站, 无线通 信节点为 TP为例进行说明, 但不以此做任何限定, 该方法步骤包 括: 5401、 宏基站向 TP发送数据包。 其中, 数据包是用宏基站的 PDCP PDU生成的。
5402、 TP接收宏基站发送数据包。
5403、 TP获取数据包中的 PDCP PDU作为 RLC SDU。 需要说明的是, 由 PDCP层发送到 RLC层的 PDCP PDU在未 经过 RLC层的处理之前, 为 RLC层的 RLC SDU。 由于宏基站发送 PDCP层的 PDCP PDU即 RLC层的 RLC SDU在 TP的 RLC层没有 经过处理, 所以 PDCP PDU的包头的序列号与 RLC SDU包头的序 列号是一样的, 可以根据该序列号识别 PDCP PDU与 RLC SDU是 否携带着相同的数据信息。
5404、 TP向 UE发送使用 RLC SDU生成的数据。
5405、 TP接收 UE发送的第二状态报告。
需要说明的是, 其中, 第二状态报告用于指示 UE 是否成功接 收到使用 RLC SDU生成的数据。 示例性的,如果 TP接受到 UE返回的 RLC PDU的 RLC PDU1 , RLC PDU2和 RLC PDU3 的第二状态报告均为 ACK , 则确定 RLC PDU发送成功,否则为发送成功。进一步的, TP可以通过 RLC PDU 是否成功发送确定接收到的 RLC SDU是否成功发送, 并可以根据 RLC SDU是否成功发送告知宏基站,使得宏基站根据 RLC SDU是 否成功发送确定 PDCP PDU是否发送成功。
5406、 TP向宏基站发送第一状态报告。
需要说明的是, 本实施例提供的是 TP和宏基站处于非确认模 式的数据传输的控制方法, 即宏基站根据第一状态报告的内容确定
PDCP PDU是否成功发送。 进一步的, 第一状态报告用于指示 PDCP PDU是否发送成功, 其中, 如果第二状态报告指示 UE成功接收到使用 RLC SDU生成 的数据, 第一状态报告指示 PDCP PDU发送成功; 如果第二状态报 告指示 UE没有成功接收到使用 RLC SDU生成的数据, 第一状态 报告指示 PDCP PDU没有发送成功。 示例性的, 第一状态报告携带有用于标识 RLC SDU的信息, 用 于标识 RLC SDU的信息包括 RLC SDU的标识; 其中, 标识为 RLC SDU 包头的标识, 或标识为与基站约定的 RLC SDU 的编号。 再进 一步的,第一状态报告还携带有 UE的 UE ID和 /或承载标识 RB ID。
基于上述的标识携带的内容,用于标识 RLC SDU的信息还包括 偏置值, 偏置值用于确定偏置值对应的至少一个 RLC SDU 对应的 PDCP PDU是否发送成功; 或者用于标识 RLC SDU的信息还包括位 图, 位图用于确定与 RLC SDU 连续的至少一个 RLC SDU 对应的 PDCP PDU是否发送成功,其中,位图的比特数与至少一个 RLC SDU 的个数相同。
5407、 宏基站接收 TP发送的第一状态报告。
示例性的, 宏基站如果在接收到 TP 发送的第一状态报告, 且 第一状态报告指示 RLC SDU成功发送,则确定该 PDCP PDU成功发 送; 宏基站如果在接收到 TP发送的第一状态报告, 且第一状态报告 指示 RLC SDU未成功发送, 则确定该 PDCP PDU未成功发送。
示例性的, 若第一状态 ^艮告中包含至少两个 RLC SDU的标识, 则所述 RLC SDU的标识包括成功或未成功发送的最小 RLC SDU的 标识和比特串。 比特串中每一个比特位表示的是成功或未成功发送 的最小 RLC SDU之后的 RLC SDU的状态, 该状态为 RLC SDU是 否成功发送。 如状态报告中 RLC SDU的标识为 5 , 1 , 0 , 0 , 1 , 0 ... , 若状态 告指示第一个 RLC SDU的标识为成功发送的 RLC SDU的 标识,则 5表示标识为 5RLC SDU的成功发送, 10010表示标识为 6 , 9的 RLC SDU成功发送, 标识为 7 , 8 , 10的 RLC SDU未发送成功。
5408、宏基站根据第一状态报告确定 PDCP PDU是否发送成功。 本发明实施例提供的数据传输的控制方法, TP接收宏基站发送 的数据包, 其中, 数据包是用宏基站的 PDCP PDU生成的, TP获取 数据包中的 PDCP PDU作为 RLC SDU ,并向用户设备发送使用 RLC SDU生成的数据。 这样一来, 宏基站中仅需要设置有 RLC层, 即可 以与 TP的 PDCP层进行交互, 进而保证数据在宏基站与 TP公约的 确认模式下或非确认模式下, 根据不同模式需求实现数据的传输要 求, 且由于宏基站和 TP多点协同用户设备传输数据, 因此提升了用 户设备的吞吐量。 本发明另一实施例提供的数据传输方法, 如图 7 所示, 本实施 例以确认模式或非确认模式下, 基站为宏基站, 无线通信节点为 TP 为例进行说明, 但不以此做任何限定, 该方法步骤包括:
5501、 宏基站向 TP发送数据包。
其中, 数据包是用宏基站的 PDCP PDU生成的。
5502、 TP接收宏基站发送数据包。
5503、 TP获取数据包中的 PDCP PDU作为 RLC SDU。
5504、 TP向 UE发送使用 RLC SDU生成的数据。
5505、 TP接收 UE发送的第二状态报告。
需要说明的是, 其中, 第二状态报告用于指示 UE 是否成功接 收到使用 RLC SDU生成的数据。
进一步的,步骤 S501 至 S505与上述实施例中的传输方式相同, 处理方法和传输内容均相同, 在此不再赘述。
5506、 宏基站向 TP发送丟弃消息。
示例性的, 丟弃消息指示丟弃 PDCP PDU对应的 RLC SDU。 丟 弃消息携带有用于标识 RLC SDU的信息, 用于标识 RLC SDU的信 息包括 RLC SDU的标识; 其中, 标识为 RLC SDU包头的标识, 或 标识为与基站约定的 RLC SDU的编号。
需要说明的是, 宏基站的 PDCP为每一个 PDCP PDU所对应的 PDCP SDU 维护一个超时定时器, 该超时定时器的长度为一个第二 预时间, 如 10秒, 超过 10秒则向 TP发送丟弃消息。 其中, 第二定 时时间是针对每一个 UE的 DRB ID或 E-RAB ID设定的。
进一步的,丟弃消息可以包括 RLC SDU的标识,这个 RLC SDU 的标识可以是宏基站向 TP发送的 PDU包头序列号, 也可以是与 TP 共知的 RLC SDU的预设编码, 如 RLC SDU1、 2、 3、 4、 5对应 PDCP PDU的 1、 3、 5、 7、 9 ,可以根据 RLC SDU2成功发送确定 PDCP PDU3 成功发送。 若包含至少一组连续的值时, 进一步的, 丟弃消息还可 包括 UE ID、UE的 DRB ID或 E-RAB ID。为了降低丟弃消息的开销。 丟弃消息的内容可以为: 不连续的 RLC RLC SDU的标识, 一组连 续值中最小或者最大的 RLC SDU的标识, 偏置值, 其中该偏置值表 示一组连续值中连续的 RLC RLC SDU个数。 值得指出的是, 丟弃 消息中携带的标识可以为上述实施例中第一状态报告携带的任一标 识, 在此不再赘述。
5507、 TP接收宏基站发送的丟弃消息。
示例性的, 若 TP 接收到丟弃消息, 则根据丟弃消息丟弃相应 的 RLC SDU。
5508、 TP根据接收的丟弃消息丟弃 RLC SDU。
值得指出的是, 步骤 S504之后, 如图 8所示, 还可以执行步骤 S508 , 步骤 S508和步骤 S505择一执行。
5508、 宏基站向 TP发送第二定时时间。
5509、 TP启动第二定时器, 其中, 第二定时器的第二定时时间 由宏基站发送。
示例性的, 宏基站向 TP 发送第二定时时间。 其中, 第二定时 时间为 PDCP PDU对应的 PDCP SDU的超时定时器时间。
如果 TP自 己维护第二定时器,则可以是针对每个 UE的 DRB ID 或 E-RAB ID的 RLC SDU设置第二定时时间。 超时后, TP丟弃相 应的 RLC SDU。
5510、 TP在第二定时器超时时, 丟弃 RLC SDU。
本发明实施例提供的数据传输的控制方法, TP丟弃 RLC SDU , 节省了 TP中緩存 RLC SDU的空间。
本发明实施例提供的数据传输的控制方法, TP接收宏基站发送 的数据包, 其中, 数据包是用宏基站的 PDCP PDU生成的, TP获取 数据包中的 PDCP PDU作为 RLC SDU ,并向用户设备发送使用 RLC SDU生成的数据。 这样一来, 宏基站中仅需要设置有 RLC层, 即可 以与 TP的 PDCP层进行交互, 进而保证数据在宏基站与 TP公约的 确认模式下或非确认模式下, 根据不同模式需求实现数据的传输要 求, 且由于宏基站和 TP多点协同用户设备传输数据, 因此提升了用 户设备的吞吐量。 本发明实施例提供的无线通信节点 40 , 如图 9所示, 包括: 接收单元 401 , 用于接收基站 50发送的数据包, 其中, 数据包 是用基站 50的 PDCP PDU生成的。
控制单元 402 ,用于获取接收单元 401接收的数据包中的 PDCP PDU作为 RLC SDU。
发送单元 403 , 用于向 UE 60发送控制单元 402使用 RLC SDU 生成的数据。
进一步的, 接收单元 401 , 还用于接收 UE 60发送的第二状态 报告,其中,第二状态报告用于指示 UE 60是否成功接收到使用 RLC SDU生成的数据。
发送单元 403 , 还用于向基站 50发送第一状态报告, 其中, 第 一状态报告用于指示 PDCP PDU是否发送成功, 其中, 如果接收单 元 401接收的第二状态报告指示 UE 60成功接收到使用 RLC SDU生 成的数据, 第一状态报告指示 PDCP PDU发送成功; 如果接收单元 401接收的第二状态报告指示 UE 60没有成功接收到使用 RLC SDU 生成的数据, 第一状态报告指示 PDCP PDU没有发送成功。
需要说明的是, 发送单元 403 , 还用于按预设周期向基站 50发 送第一状态报告。
或者,
如果接收单元 401接收到基站 50发送的请求消息, 其中, 请求 消息用于请求无线通信节点向基站 50 第一状态报告, 则发送单元 403向基站 50发送第一状态报告。
接收单元 401 , 还用于接收基站 50发送的丟弃消息, 丟弃消息 指示丟弃 PDCP PDU对应的 RLC SDU。
控制单元 402 , 还用于根据接收单元 401 接收的丟弃消息丟弃 RLC SDU。 进一步的, 无线通信节点 40 , 如图 10所示, 还包括:
第一定时单元 404 , 用于启动第一定时器, 其中, 第一定时器 的第一定时时间由基站 50或运营管理与维护 OAM发送。
示例性的,如果在第一定时单元 404启动的第一定时器到时时, 接收单元 401没有接收到 UE 60发送的第二状态报告,发送单元 403 向基站 50发送第一状态报告, 其中, 第一状态报告指示 RLC SDU 未成功发送; 第二状态报告用于指示 UE 60 是否成功接收到使用 RLC SDU生成的数据。
或者, 在第一定时单元 404启动的第一定时器到时前, 接收单 元 401接收 UE 60发送的第二状态报告, 其中, 第二状态报告用于 指示 UE 60是否成功接收到使用 RLC SDU生成的数据。
如果第二状态报告指示 UE 60 没有成功接收到使用 RLC SDU 生成的数据包, 发送单元 403向基站 50发送第一状态报告, 其中, 第一状态^艮告指示 RLC SDU未成功发送。
或者,如果第二状态报告指示 UE 60成功接收到使用 RLC SDU 生成的数据包, 发送单元 403不向基站 50发送第一状态报告。
进一步的, 无线通信节点 40 , 如图 11 所示, 还包括:
第二定时单元 405 , 用于启动第二定时器, 其中, 第二定时器 的第二定时时间由基站 50发送。
若第二定时器超时时, 控制单元 402还用于丟弃 RLC SDU。 本发明实施例提供的基站 50 , 如图 12所示, 包括:
发送单元 501 , 用于向无线通信节点 40发送数据包, 其中, 数 据包是用 PDCP PDU生成的,以使得无线通信节点 40获取数据包中 的 PDCP PDU作为无线链路控制业务数据单元 RLC SDU , 并向 UE 60发送使用 RLC SDU生成的数据。
需要说明的是, 在非确认模式下或确认模式下, 发送单元 501 还用于向无线通信节点 40 发送丟弃消息, 丟弃消息包括第一 SDU 的标识,用于指示无线通信节点 40丟弃第一 PDU对应的第一 SDU。
进一步的, 基站 50 , 如图 13所示, 还包括:
接收单元 502 ,用于接收无线通信节点 40发送的第一状态报告, 其中, 第一状态报告用于指示 PDCP PDU是否发送成功, 第一状态 报告是无线通信节点 40接收 UE 60发送的第二状态报告后发送的, 其中,如果第二状态报告指示 UE 60成功接收到使用 RLC SDU生成 的数据, 第一状态报告指示 PDCP PDU发送成功; 如果第二状态报 告指示 UE 60没有成功接收到使用 RLC SDU生成的数据,第一状态 报告指示 PDCP PDU没有发送成功。
控制单元 503 , 用于根据接收单元 502 接收的第一状态报告确 定 PDCP PDU是否成功发送。
进一步的, 接收单元 502 , 还用于接收并使得发送单元 501 向 无线通信节点 40转发运营管理 OAM发送的第一定时时间。
或,
控制单元 503 , 还用于生成并使得发送单元 501 向无线通信节 点 40 发送第一定时时间, 其中, 第一定时时间用于无线通信节点 40启动的第一定时器。
接收单元 502在第一定时器到时时,接收无线通信节点 40发送 的第一状态报告, 其中, 第一状态报告指示 RLC SDU未成功发送, 以使得控制单元 503确定 RLC SDU未成功发送。
或者,
接收单元 502在第一定时器到时前,接收无线通信节点 40发送 的第一状态报告, 其中, 第一状态报告指示 RLC SDU未成功发送, 以使得控制单元 503确定 RLC SDU未成功发送。
或者,
接收单元 502在第一定时器到时前, 未接收到无线通信节点 40 发送的第一状态报告, 以使得控制单元 503确定 RLC SDU未成功发 送。
进一步的, 发送单元 501 , 还用于向无线通信节点 40发送请求 消息, 其中, 请求消息用于请求无线通信节点 40向基站第一状态报 告。
发送单元 501 , 还用于向无线通信节点 40发送丟弃消息, 丟弃 消息指示丟弃 PDCP PDU对应的 RLC SDU。
发送单元 501 , 还用于向无线通信节点 40发送第二定时时间, 第二定时时间用于无线通信节点 40启动的第二定时器。 本基站 50可以使用上述实施例提供的方法进行工作, 工作方 法与实施例提供的方法相同, 在此不再赘述。
本发明实施例提供的基站 50和无线通信节点 40 , 无线通信节 点 40接收基站 50发送的数据包,其中,数据包是用基站 50的 PDCP PDU 生成的, 无线通信节点 40 获取数据包中的 PDCP PDU作为 RLC SDU , 并向 UE 60发送使用 RLC SDU生成的数据。这样一来, 基站 50 中仅需要设置有 RLC 层, 即可以与无线通信节点 40 的 PDCP层进行交互, 进而保证数据在基站 50与无线通信节点 40公 约的确认模式下或非确认模式下,根据不同模式需求实现数据的传 输要求,且由于基站 50和无线通信节点 40多点协同 UE 60传输数 据, 因此提升了 UE 60的吞吐量。
本发明另一实施例提供的无线通信节点 70 , 如图 14所示, 包 括:
接收器 701 , 用于接收基站 80发送的数据包, 其中, 数据包是 用基站 80的 PDCP PDU生成的.
处理器 702 , 用于用于获取接收器 701接收的数据包中的 PDCP PDU作为 RLC SDU。
发送器 703 ,用于向 UE 60发送处理器 702使用 RLC SDU生成 的数据。 在确认模式下, 发送器 703 , 还用于向基站 80发送第一状态报 告, 其中, 第一状态报告为处理器 702根据接收器 701接收的 RLC PDU 是否成功发送生成, 以使得基站 80 根据第一状态报告确定 PDCP PDU是否成功发送。
进一步的, 接收器 701 , 用于接收 UE 60发送的第二状态报告, 其中, 第二状态报告用于指示 UE 60是否成功接收到使用 RLC SDU 生成的数据。
发送器 703 , 还用于向基站 80发送第一状态报告, 其中, 第一 状态报告用于指示 PDCP PDU是否发送成功, 其中,如果接收器 701 接收的第二状态报告指示 UE 60成功接收到使用 RLC SDU生成的数 据, 第一状态报告指示 PDCP PDU发送成功; 如果接收器 701接收 的第二状态报告指示 UE 60没有成功接收到使用 RLC SDU生成的数 据, 第一状态报告指示 PDCP PDU没有发送成功。
再进一步的, 处理器 702 , 还用于启动第一定时器, 其中, 第 一定时器的第一定时时间由基站 80或运营管理与维护 OAM发送。
如果在处理器 702启动的第一定时器到时时, 接收器 701 没有 接收到 UE 60发送的第二状态报告,发送器 703向基站 80发送第一 状态报告, 其中, 第一状态报告指示 RLC SDU未成功发送; 第二状 态报告用于指示 UE 60是否成功接收到使用 RLC SDU生成的数据。
或者,
在处理器 702启动的第一定时器到时前,接收器 701接收 UE 60 发送的第二状态报告, 其中, 第二状态报告用于指示 UE 60是否成 功接收到使用 RLC SDU生成的数据。
如果第二状态报告指示 UE 60 没有成功接收到使用 RLC SDU 生成的数据包, 发送器 703向基站 80发送第一状态报告, 其中, 第 一状态 告指示 RLC SDU未成功发送。
或者,
如果第二状态报告指示 UE 60成功接收到使用 RLC SDU生成 的数据包, 发送器 703不向基站 80发送第一状态报告。 再进一步的, 发送器 703 , 还用于按预设周期向基站 80发送第 一状态报告。
或者,
如果接收器 701接收到基站 80发送的请求消息, 其中, 请求消 息用于请求无线通信节点向基站 80第一状态报告, 则发送器 703向 基站 80发送第一状态报告。
示例性的, 接收器 701 , 还用于接收基站 80发送的丟弃消息, 丟弃消息指示丟弃 PDCP PDU对应的 RLC SDU; 处理器 702 , 还用 于根据接收器 701接收的丟弃消息丟弃 RLC SDU。
或者,
处理器 702 , 还用于启动第二定时器, 其中, 第二定时器的第 二定时时间由基站 80发送。
若第二定时器超时时, 处理器 702还用于丟弃 RLC SDU。
本无线通信节点 70可以使用上述实施例提供的方法进行工作, 工作方法与实施例提供的方法相同, 在此不再赘述。
本发明另一实施例提供的基站 80 , 如图 15所示, 包括: 发送器 801 , 用于向无线通信节点 70发送数据包, 其中, 数据 包是用 PDCP数据单元 PDU生成的, 以使得无线通信节点 70获取 数据包中的 PDCP PDU作为无线链路控制业务数据单元 RLC SDU , 并向 UE 60发送使用 RLC SDU生成的数据。
进一步的, 基站 80 , 如图 16所示, 还包括:
接收器 802 , 用于接收无线通信节点 70发送的第一状态报告, 其中, 第一状态报告用于指示 PDCP PDU是否发送成功, 第一状态 报告是无线通信节点 70接收 UE 60发送的第二状态报告后发送的, 其中,如果第二状态报告指示 UE 60成功接收到使用 RLC SDU生成 的数据, 第一状态报告指示 PDCP PDU发送成功; 如果第二状态报 告指示 UE 60没有成功接收到使用 RLC SDU生成的数据,第一状态 报告指示 PDCP PDU没有发送成功。
处理器 803 , 用于根据接收器 802 接收的第一状态报告确定 PDUP PDU是否成功发送。
示例性的, 接收器 802 , 用于接收并使得发送器 801 向无线通 信节点 70转发运营管理 OAM发送的第一定时时间; 或者, 处理器 803 , 用于生成并使得发送器 801 向无线通信节点 70发送第一定时 时间,其中,第一定时时间用于无线通信节点 70启动的第一定时器。
进一步的, 接收器 802在第一定时器到时时, 接收无线通信节 点 70发送的第一状态报告, 其中, 第一状态报告指示 RLC SDU未 成功发送, 以使得处理器 803确定 RLC SDU未成功发送。
或者, 接收器 802在第一定时器到时前, 接收无线通信节点 70 发送的第一状态报告, 其中, 第一状态报告指示 RLC SDU未成功发 送, 以使得处理器 803确定 RLC SDU未成功发送。
或者, 接收器 802在第一定时器到时前, 未接收到无线通信节 点 70发送的第一状态报告, 以使得处理器 803确定 RLC SDU未成 功发送。
再进一步的, 发送器 801 , 还用于向无线通信节点 70发送请求 消息, 其中, 请求消息用于请求无线通信节点 70向基站第一状态报 告。
值得指出的是, 发送器 801 , 还用于向无线通信节点 70发送丟 弃消息, 丟弃消息指示丟弃 PDCP PDU对应的 RLC SDU。
或者,
发送器 801 , 还用于向无线通信节点 70发送第二定时时间, 第 二定时时间用于无线通信节点 70启动的第二定时器。
本基站 80可以使用上述实施例提供的方法进行工作,工作方法 与实施例提供的方法相同, 在此不再赘述。
本发明实施例提供的基站 80 和无线通信节点 70 , 无线通信节 点 70接收基站 80发送的数据包,其中,数据包是用基站 80的 PDCP PDU生成的,无线通信节点 70获取数据包中的 PDCP PDU作为 RLC SDU , 并向用户设备发送使用 RLC SDU生成的数据。 这样一来, 基 站 80 中仅需要设置有 RLC层, 即可以与无线通信节点 70的 PDCP 层进行交互, 进而保证数据在基站 80 与无线通信节点 70公约的确 认模式下或非确认模式下, 根据不同模式需求实现数据的传输要求, 且由于基站 80和无线通信节点 70 多点协同用户设备传输数据, 因 此提升了用户设备的吞吐量。
本发明实施例提供的系统, 如图 17所示, 包括:
上述实施例中的基站 50 ;
上述实施例中的无线通信节点 40 ;
UE 60 , 接收所述无线通信节点 40发送的使用 RLC SDU生成 的数据。
需要说明的是, 上述基站 50和无线通信节点 40能够执行上述 对应的方法实施例, 其具体结构可以参照上述基站 50的实施例和无 线通信节点 40的实施例。 该基站 50和无线通信节点 40可以用于执 行上述方法实施例的步骤, 其具体各个步骤中的应用可以参照上述 方法实施例。 该基站 50和无线通信节点 40 的具体结构与上述实施 例中提供的基站和终端的结构相同, 在此不再赘述。
本发明实施例提供的系统, 该系统包括基站、 无线通信节点和 UE , 其中, 无线通信节点接收基站发送的数据包, 其中, 数据包是 用基站的 PDCP PDU生成的, 无线通信节点获取数据包中的 PDCP PDU作为 RLC SDU ,并向用户设备发送使用 RLC SDU生成的数据。 这样一来, 基站中仅需要设置有 RLC层, 即可以与无线通信节点的 PDCP层进行交互,进而保证数据在基站与无线通信节点公约的确认 模式下或非确认模式下, 根据不同模式需求实现数据的传输要求, 且由于基站和无线通信节点多点协同用户设备传输数据, 因此提升 了用户设备的吞吐量。
本发明实施例提供的系统, 如图 18所示, 包括:
上述实施例中的基站 80 ;
上述实施例中的无线通信节点 70 ;
UE 60 , 接收所述无线通信节点 70发送的使用 RLC SDU生成 的数据。 需要说明的是, 上述基站 80和无线通信节点 70能够执行上述 对应的方法实施例, 其具体结构可以参照上述基站 80的实施例和无 线通信节点 70的实施例。 该基站 80和无线通信节点 70可以用于执 行上述方法实施例的步骤, 其具体各个步骤中的应用可以参照上述 方法实施例。 该基站 80和无线通信节点 70 的具体结构与上述实施 例中提供的基站和终端的结构相同, 在此不再赘述。
本发明实施例提供的系统, 该系统包括基站、 无线通信节点和 UE , 其中, 无线通信节点接收基站发送的数据包, 其中, 数据包是 用基站的 PDCP PDU生成的, 无线通信节点获取数据包中的 PDCP PDU作为 RLC SDU ,并向用户设备发送使用 RLC SDU生成的数据。 这样一来, 基站中仅需要设置有 RLC层, 即可以与无线通信节点的 PDCP层进行交互,进而保证数据在基站与无线通信节点公约的确认 模式下或非确认模式下, 根据不同模式需求实现数据的传输要求, 且由于基站和无线通信节点多点协同用户设备传输数据, 因此提升 了用户设备的吞吐量。 以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围 并不局限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技 术范围内, 可轻易想到变化或替换, 都应涵盖在本发明的保护范围 之内。 因此, 本发明的保护范围应所述以权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种数据传输的控制方法, 其特征在于, 包括:
无线通信节点接收基站发送的数据包, 其中, 所述数据包是用所 述基站的分组数据汇聚协议协议数据单元 PDCP PDU生成的;
所述无线通信节点获取所述数据包中的所述 PDCP PDU作为无 线链路控制业务数据单元 RLC SDU; 以及
所述无线通信节点向用户设备发送使用所述 RLC SDU生成的数 据, 其中, 所述无线通信节点与所述用户设备建立了用户面连接, 所 述基站与所述用户设备建立了控制面连接。
2、 根据权利要求 1 所述的方法, 其特征在于, 无线通信节点接 收基站发送的数据包之后, 所述方法还包括:
所述无线通信节点启动第一定时器, 其中, 所述第一定时器的第 一定时时间由所述基站或运营管理与维护 OAM发送。
3、 根据权利要求 2所述的方法, 其特征在于, 所述无线通信节 点向用户设备发送使用所述 RLC SDU生成的数据之后, 所述方法还 包括:
如果在所述第一定时器到时时,所述无线通信节点没有接收到所 述用户设备发送的第二状态报告, 所述无线通信节点向所述基站发送 第一状态报告, 其中, 所述第一状态报告指示所述 RLC SDU未成功 发送; 所述第二状态报告用于指示所述用户设备是否成功接收到使用 所述 RLC SDU生成的所述数据; 或者,
在所述第一定时器到时前,所述无线通信节点接收所述用户设备 发送的第二状态报告, 其中, 所述第二状态报告用于指示所述用户设 备是否成功接收到使用所述 RLC SDU生成的所述数据;
如果所述第二状态报告指示所述用户设备没有成功接收到使用 所述 RLC SDU生成的所述数据包, 所述无线通信节点向所述基站发 送第一状态报告, 其中, 所述第一状态报告指示所述 RLC SDU未成 功发送; 或者,
如果所述第二状态报告指示所述用户设备成功接收到使用所述 RLC SDU 生成的所述数据包, 所述无线通信节点不向所述基站发送 所述第一状态报告。
4、 根据权利要求 3 所述的方法, 其特征在于, 所述无线通信节 点向所述基站发送第一状态报告, 包括:
在所述第一定时器到时前,如果所述无线通信节点接收到所述用 户设备发送的第二状态报告, 且所述第二状态报告指示所述用户设备 没有成功接收到使用所述 RLC SDU生成的所述数据包, 则在所述第 一定时器到时前按预设周期向所述基站发送所述第一状态报告; 或, 所述第二接站接收所述基站发送的请求消息, 其中, 所述请求消 息用于请求所述无线通信节点向所述基站所述第一状态报告; 以及, 所述无线通信节点向所述基站发送第一状态报告, 包括: 在所述第一 定时器到时前, 如果所述无线通信节点接收到所述用户设备发送的第 二状态报告, 且所述第二状态报告指示所述用户设备没有成功接收到 使用所述 RLC SDU生成的所述数据包, 则向所述基站发送所述第一 状态报告。
5、 根据权利要求 1 所述的方法, 其特征在于, 所述无线通信节 点向用户设备发送使用所述 RLC SDU生成的数据之后, 所述方法还 包括:
所述无线通信节点接收所述用户设备发送的第二状态报告, 其 中, 所述第二状态报告用于指示所述用户设备是否成功接收到使用所 述 RLC SDU生成的所述数据;
向所述基站发送第一状态报告, 其中, 所述第一状态报告用于指 示所述 PDCP PDU是否发送成功, 其中, 如果所述第二状态报告指示 所述用户设备成功接收到使用所述 RLC SDU生成的所述数据, 所述 第一状态报告指示所述 PDCP PDU发送成功;如果所述第二状态报告 指示所述用户设备没有成功接收到使用所述 RLC SDU生成的所述数 据, 所述第一状态报告指示所述 PDCP PDU没有发送成功。
6、 根据权利要求 5所述的方法, 其特征在于, 所述向所述基站 发送第一状态报告, 包括: 按预设周期向所述基站发送第一状态报告;
或者,
如果所述无线通信节点接收到所述基站发送的请求消息, 其中, 所述请求消息用于请求所述无线通信节点向所述基站所述第一状态 报告, 则所述无线通信节点向所述基站发送所述第一状态报告。
7、 根据权利要求 3至 6中任一项所述的方法, 其特征在于, 所述第一状态报告携带有用于标识所述 RLC SDU的信息。
8、 根据权利要求 7所述的方法, 其特征在于,
所述用于标识所述 RLC SDU的信息包括所述 RLC SDU的标识; 其中, 所述标识为所述 RLC SDU包头的标识, 或所述标识为与所述 基站约定的所述 RLC SDU的编号。
9、 根据权利要求 8所述的方法, 其特征在于,
所述第一状态报告还携带有所述用户设备的标识 ID 和 /或承载 标识 RB ID。
10、 根据权利要求 8或 9所述的方法, 其特征在于,
所述用于标识所述 RLC SDU的信息还包括偏置值, 所述偏置值 用于确定所述偏置值对应的至少一个 RLC SDU对应的 PDCP PDU是 否发送成功; 或者
所述用于标识所述 RLC SDU的信息还包括位图, 所述位图用于 确定与所述 RLC SDU连续的至少一个 RLC SDU对应的 PDCP PDU 是否发送成功, 其中, 所述位图的比特数与所述至少一个 RLC SDU 的个数相同。
11、 根据权利要 8所述的方法, 其特征在于,
所述用于标识所述 RLC SDU的信息为 1 比特, 所述 1 比特用于 表示所述 RLC SDU的标识与前一个 RLC SDU的标识连续, 其中, 所 述 RLC SDU对应的所述第一状态报告与所述前一个 RLC SDU对应的 第一状态报告指示的状态相同。
12、 根据权利要求 1 至 11 中任一项所述的方法, 其特征在于, 所述无线通信节点获取所述数据包中的所述 PDCP PDU 作为 RLC SDU之后, 所述方法还包括:
接收所述基站发送的丟弃消息, 其中, 所述丟弃消息指示丟弃所 述 PDCP PDU对应的所述 RLC SDU; 以及
根据接收的所述丟弃消息丟弃所述 RLC SDU。
13、 根据权利要求 12所述的方法, 其特征在于:
所述丟弃消息携带有用于标识所述 RLC SDU的信息,所述用于标 识所述 RLC SDU的信息包括所述 RLC SDU的标识; 其中, 所述标识 为所述 RLC SDU包头的标识, 或所述标识为与所述基站约定的所述 RLC SDU的编号。
14、 根据权利要求 1 至 11 中任一项所述的方法, 其特征在于, 所述无线通信节点接收基站发送的数据包之后, 所述方法还包括: 所述无线通信节点启动第二定时器, 其中, 所述第二定时器的第 二定时时间由所述基站发送。
15、 根据权利要求 14 所述的方法, 其特征在于, 所述无线通信 节点获取所述数据包中的所述 PDCP PDU 作为无线链路控制业务数 据单元 RLC SDU之后, 所述方法
还包括:
所述第二定时器超时时, 丟弃所述 RLC SDU。
16、 根据权利要求 14或 15所述的方法, 其特征在于, 所述无线 通信节点启动第二定时器, 包括:
所述无线通信节点的 RLC层实体启动第二定时器。
17、 一种数据传输的控制方法, 其特征在于, 包括:
基站向无线通信节点发送数据包,所述数据包是用分组数据汇聚 协议协议数据单元 PDCP PDU生成的, 以使得所述无线通信节点获取 所述数据包中的所述 PDCP PDU 作为无线链路控制业务数据单元 RLC SDU , 并向用户设备发送使用所述 RLC SDU生成的数据, 其中 , 所述无线通信节点与所述用户设备建立了用户面连接, 所述基站与所 述用户设备建立了控制面连接。
18、 根据权利要求 17所述的方法, 其特征在于, 所述基站向无 线通信节点发送数据包之后, 还包括:
所述基站接收并向所述无线通信节点转发运营管理 OAM发送的 第一定时时间; 或者,
所述基站生成并向所述无线通信节点发送所述第一定时时间,其 中, 所述第一定时时间用于所述无线通信节点启动的第一定时器。
19、 根据权利要求 18所述的方法, 其特征在于, 所述基站接收 并向所述无线通信节点转发运营管理 OAM发送的第一定时时间; 或 者, 所述基站生成并向所述无线通信节点发送所述第一定时时间之 后, 还包括:
所述基站在所述第一定时器到时时,接收所述无线通信节点发送 的第一状态报告, 其中, 所述第一状态报告指示所述 RLC SDU未成 功发送, 以确定所述 RLC SDU未成功发送; 或者,
所述基站在所述第一定时器到时前,接收所述无线通信节点发送 的第一状态报告, 其中, 所述第一状态报告指示所述 RLC SDU未成 功发送, 以确定所述 RLC SDU未成功发送; 或者,
所述基站在所述第一定时器到时前,未接收到所述无线通信节点 发送的第一状态^艮告, 以确定所述 RLC SDU未成功发送。
20、 根据权利要求 17所述的方法, 其特征在于, 所述基站向无 线通信节点发送数据包之后, 还包括:
所述基站接收所述无线通信节点发送的第一状态报告, 其中, 所 述第一状态报告用于指示所述 PDCP PDU是否发送成功,所述第一状 态报告是所述无线通信节点接收所述用户设备发送的第二状态报告 后发送的, 其中, 如果所述第二状态报告指示所述用户设备成功接收 到使用所述 RLC SDU生成的所述数据, 所述第一状态报告指示所述 PDCP PDU发送成功; 如果所述第二状态报告指示所述用户设备没有 成功接收到使用所述 RLC SDU生成的所述数据, 所述第一状态报告 指示所述 PDCP PDU没有发送成功;
所述基站根据所述第一状态报告确定所述 PDCP PDU是否成功 发送。
21、 根据权利要求 19所述的方法, 其特征在于, 所述基站向无 线通信节点发送数据包之后, 还包括:
所述基站向所述无线通信节点发送请求消息, 其中, 所述请求消 息用于请求所述无线通信节点向所述基站所述第一状态报告。
22、 根据权利要求 17所述的方法, 其特征在于, 所述基站接收 所述无线通信节点发送的第一状态报告之前, 还包括:
所述基站向所述无线通信节点发送丟弃消息,所述丟弃消息指示 丟弃所述 PDCP PDU对应的所述 RLC SDU。
23、 根据权利要求 17所述的方法, 其特征在于, 所述基站向无 线通信节点发送数据包之后, 还包括:
所述基站向无线通信节点发送第二定时时间,所述第二定时时间 用于所述无线通信节点启动的第二定时器。
24、 一种无线通信节点, 其特征在于, 包括:
接收单元, 用于接收基站发送的数据包, 其中, 所述数据包是用 所述基站的分组数据汇聚协议协议数据单元 PDCP PDU生成的;
控制单元, 用于获取所述接收单元接收的所述数据包中的所述 PDCP PDU作为无线链路控制业务数据单元 RLC SDU;
发送单元, 用于向用户设备发送所述控制单元使用所述 RLC SDU生成的数据, 其中, 所述无线通信节点与所述用户设备建立了用 户面连接, 所述基站与所述用户设备建立了控制面连接。
25、 根据权利要求 24所述的无线通信节点, 其特征在于, 还包 括:
第一定时单元, 用于启动第一定时器, 其中, 所述第一定时器的 第一定时时间由所述基站或运营管理与维护 OAM发送。
26、 根据权利要求 25所述的无线通信节点, 其特征在于, 如果在所述第一定时单元启动的所述第一定时器到时时,所述接 收单元没有接收到所述用户设备发送的第二状态报告, 所述发送单元 向所述基站发送第一状态报告, 其中, 所述第一状态报告指示所述 RLC SDU 未成功发送; 所述第二状态报告用于指示所述用户设备是 否成功接收到使用所述 RLC SDU生成的所述数据; 或者, 在所述第一定时单元启动的所述第一定时器到时前,所述接收单 元接收所述用户设备发送的第二状态报告, 其中, 所述第二状态报告 用于指示所述用户设备是否成功接收到使用所述 RLC SDU生成的所 述数据;
如果所述第二状态报告指示所述用户设备没有成功接收到使用 所述 RLC SDU生成的所述数据包, 所述发送单元向所述基站发送第 一状态报告, 其中, 所述第一状态报告指示所述 RLC SDU未成功发 送; 或者,
如果所述第二状态报告指示所述用户设备成功接收到使用所述 RLC SDU 生成的所述数据包, 所述发送单元不向所述基站发送所述 第一状态报告。
27、 根据权利要求 24所述的无线通信节点, 其特征在于, 所述接收单元, 用于接收所述用户设备发送的第二状态报告, 其 中, 所述第二状态报告用于指示所述用户设备是否成功接收到使用所 述 RLC SDU生成的所述数据;
所述发送单元, 用于向所述基站发送第一状态报告, 其中, 所述 第一状态报告用于指示所述 PDCP PDU是否发送成功, 其中, 如果所 述接收单元接收的所述第二状态报告指示所述用户设备成功接收到 使用所述 RLC SDU 生成的所述数据, 所述第一状态报告指示所述 PDCP PDU发送成功; 如果所述接收单元接收的所述第二状态报告指 示所述用户设备没有成功接收到使用所述 RLC SDU 生成的所述数 据, 所述第一状态报告指示所述 PDCP PDU没有发送成功。
28、 根据权利要求 27所述的无线通信节点, 其特征在于, 所述发送单元, 还用于按预设周期向所述基站发送第一状态报 告 ·
或者,
如果所述接收单元接收到所述基站发送的请求消息, 其中, 所述 请求消息用于请求所述无线通信节点向所述基站所述第一状态报告, 则所述发送单元向所述基站发送所述第一状态报告。
29、 根据权利要求 24所述的无线通信节点, 其特征在于, 所述接收单元, 还用于接收所述基站发送的丟弃消息, 所述丟弃 消息指示丟弃所述 PDCP PDU对应的所述 RLC SDU;
所述控制单元,还用于根据所述接收单元接收的所述丟弃消息丟 弃所述 RLC SDU。
30、 根据权利要求 24所述的无线通信节点, 其特征在于, 还包 括:
第二定时单元, 用于启动第二定时器, 其中, 所述第二定时器的 第二定时时间由所述基站发送;
若所述第二定时器超时时, 所述控制单元还用于丟弃所述 RLC SDU。
31、 一种基站, 其特征在于, 包括:
发送单元, 用于向无线通信节点发送数据包, 所述数据包是用分 组数据汇聚协议协议数据单元 PDCP PDU生成的,以使得所述无线通 信节点获取所述数据包中的所述 PDCP PDU 作为无线链路控制业务 数据单元 RLC SDU, 并向用户设备发送使用所述 RLC SDU生成的数 据, 其中, 所述无线通信节点与所述用户设备建立了用户面连接, 所 述基站与所述用户设备建立了控制面连接。
32、 根据权利要求 31所述的基站, 其特征在于, 还包括: 接收单元,用于接收并使得所述发送单元向所述无线通信节点转 发运营管理 OAM发送的第一定时时间; 或者,
控制单元,用于生成并使得所述发送单元向所述无线通信节点发 送所述第一定时时间, 其中, 所述第一定时时间用于所述无线通信节 点启动的第一定时器。
33、 根据权利要求 32所述的基站, 其特征在于,
所述接收单元在所述第一定时器到时时,接收所述无线通信节点 发送的第一状态报告, 其中, 所述第一状态报告指示所述 RLC SDU 未成功发送, 以使得所述控制单元确定所述 RLC SDU未成功发送; 或者,
所述接收单元在所述第一定时器到时前,接收所述无线通信节点 发送的第一状态报告, 其中, 所述第一状态报告指示所述 RLC SDU 未成功发送, 以使得所述控制单元确定所述 RLC SDU未成功发送; 或者,
所述接收单元在所述第一定时器到时前,未接收到所述无线通信 节点发送的第一状态报告, 以使得所述控制单元确定所述 RLC SDU 未成功发送。
34、 根据权利要求 31所述的基站, 其特征在于,
所述接收单元,还用于接收所述无线通信节点发送的第一状态报 告,其中,所述第一状态报告用于指示所述 PDCP PDU是否发送成功, 所述第一状态报告是所述无线通信节点接收所述用户设备发送的第 二状态报告后发送的, 其中, 如果所述第二状态报告指示所述用户设 备成功接收到使用所述 RLC SDU生成的所述数据, 所述第一状态报 告指示所述 PDCP PDU发送成功;如果所述第二状态报告指示所述用 户设备没有成功接收到使用所述 RLC SDU生成的所述数据, 所述第 一状态 告指示所述 PDCP PDU没有发送成功;
所述控制单元,还用于根据所述接收单元接收的所述第一状态报 告确定所述 PDCP PDU是否成功发送。
35、 根据权利要求 34所述的基站, 其特征在于,
所述发送单元,还用于向所述无线通信节点发送请求消息,其中, 所述请求消息用于请求所述无线通信节点向所述基站所述第一状态 报告。
36、 根据权利要求 31所述的基站, 其特征在于,
所述发送单元, 还用于向所述无线通信节点发送丟弃消息, 所述 丟弃消息指示丟弃所述 PDCP PDU对应的所述 RLC SDU。
37、 根据权利要求 31所述的基站, 其特征在于,
所述发送单元, 还用于向无线通信节点发送第二定时时间, 所述 第二定时时间用于所述无线通信节点启动的第二定时器。
38、 一种无线通信节点, 其特征在于, 包括:
接收器, 用于接收基站发送的数据包, 其中, 所述数据包是用所 述基站的分组数据汇聚协议协议数据单元 PDCP PDU生成的;
处理器, 用于用于获取所述接收器接收的所述数据包中的所述 PDCP PDU作为无线链路控制业务数据单元 RLC SDU;
发送器, 用于向用户设备发送所述处理器使用所述 RLC SDU生 成的数据, 其中, 所述无线通信节点与所述用户设备建立了用户面连 接, 所述基站与所述用户设备建立了控制面连接。
39、 根据权利要求 38所述的无线通信节点, 其特征在于, 所述处理器, 还用于启动第一定时器, 其中, 所述第一定时器的 第一定时时间由所述基站或运营管理与维护 OAM发送。
40、 根据权利要求 39所述的无线通信节点, 其特征在于, 如果在所述处理器启动的所述第一定时器到时时,所述所述接收 器没有接收到所述用户设备发送的第二状态报告, 所述发送器向所述 基站发送第一状态报告,其中, 所述第一状态报告指示所述 RLC SDU 未成功发送; 所述第二状态报告用于指示所述用户设备是否成功接收 到使用所述 RLC SDU生成的所述数据; 或者,
在所述处理器启动的所述第一定时器到时前,所述接收器接收所 述用户设备发送的第二状态报告, 其中, 所述第二状态报告用于指示 所述用户设备是否成功接收到使用所述 RLC SDU生成的所述数据; 如果所述第二状态报告指示所述用户设备没有成功接收到使用 所述 RLC SDU生成的所述数据包, 所述发送器向所述基站发送第一 状态报告, 其中, 所述第一状态报告指示所述 RLC SDU未成功发送; 或者,
如果所述第二状态报告指示所述用户设备成功接收到使用所述 RLC SDU 生成的所述数据包, 所述发送器不向所述基站发送所述第 一状态报告。
41、 根据权利要求 38所述的无线通信节点, 其特征在于, 所述接收器,用于接收所述用户设备发送的第二状态报告,其中, 所述第二状态报告用于指示所述用户设备是否成功接收到使用所述
RLC SDU生成的所述数据;
所述发送器, 还用于向所述基站发送第一状态报告, 其中, 所述 第一状态报告用于指示所述 PDCP PDU是否发送成功, 其中, 如果所 述所述接收器接收的所述第二状态报告指示所述用户设备成功接收 到使用所述 RLC SDU生成的所述数据, 所述第一状态报告指示所述 PDCP PDU发送成功; 如果所述所述接收器接收的所述第二状态报告 指示所述用户设备没有成功接收到使用所述 RLC SDU生成的所述数 据, 所述第一状态报告指示所述 PDCP PDU没有发送成功。
42、 根据权利要求 40所述的无线通信节点, 其特征在于, 所述发送器, 还用于按预设周期向所述基站发送第一状态报告; 或者,
如果所述接收器接收到所述基站发送的请求消息, 其中, 所述请 求消息用于请求所述无线通信节点向所述基站所述第一状态报告, 则 所述发送器向所述基站发送所述第一状态报告。
43、 根据权利要求 38所述的无线通信节点, 其特征在于, 所述接收器, 还用于接收所述基站发送的丟弃消息, 所述丟弃消 息指示丟弃所述 PDCP PDU对应的所述 RLC SDU;
所述处理器,还用于根据所述接收器接收的所述丟弃消息丟弃所 述 RLC SDU。
44、 根据权利要求 38所述的无线通信节点, 其特征在于, 所述处理器, 还用于启动第二定时器, 其中, 所述第二定时器的 第二定时时间由所述基站发送;
若所述第二定时器超时时, 所述处理器还用于丟弃所述 RLC SDU。
45、 一种基站, 其特征在于, 包括:
发送器,用于向无线通信节点发送数据包,所述数据包是用 PDCP 数据单元 PDU 生成的, 以使得所述无线通信节点获取所述数据包中 的所述 PDCP PDU作为无线链路控制业务数据单元 RLC SDU , 并向 用户设备发送使用所述 RLC SDU生成的数据, 其中, 所述无线通信 节点与所述用户设备建立了用户面连接, 所述基站与所述用户设备建 立了控制面连接。
46、 根据权利要求 45所述的基站, 其特征在于, 还包括: 接收器,用于接收并使得所述发送器向所述无线通信节点转发运 营管理 OAM发送的第一定时时间; 或者,
处理器,用于生成并使得所述发送器向所述无线通信节点发送所 述第一定时时间, 其中, 所述第一定时时间用于所述无线通信节点启 动的第一定时器。
47、 根据权利要求 46所述的基站, 其特征在于,
所述接收器在所述第一定时器到时时,接收所述无线通信节点发 送的第一状态报告, 其中, 所述第一状态报告指示所述 RLC SDU未 成功发送, 以使得所述处理器确定所述 RLC SDU未成功发送; 或者, 所述接收器在所述第一定时器到时前,接收所述无线通信节点发 送的第一状态报告, 其中, 所述第一状态报告指示所述 RLC SDU未 成功发送, 以使得所述处理器确定所述 RLC SDU未成功发送; 或者, 所述接收器在所述第一定时器到时前,未接收到所述无线通信节 点发送的第一状态报告, 以使得所述处理器确定所述 RLC SDU未成 功发送。
48、 根据权利要求 45所述的基站, 其特征在于,
所述接收器, 还用于接收所述无线通信节点发送的第一状态报 告,其中,所述第一状态报告用于指示所述 PDCP PDU是否发送成功, 所述第一状态报告是所述无线通信节点接收所述用户设备发送的第 二状态报告后发送的, 其中, 如果所述第二状态报告指示所述用户设 备成功接收到使用所述 RLC SDU生成的所述数据, 所述第一状态报 告指示所述 PDCP PDU发送成功;如果所述第二状态报告指示所述用 户设备没有成功接收到使用所述 RLC SDU生成的所述数据, 所述第 一状态 告指示所述 PDCP PDU没有发送成功;
所述处理器,还用于根据所述接收器接收的所述第一状态报告确 定所述 PDUP PDU是否成功发送。
49、 根据权利要求 48所述的基站, 其特征在于,
所述发送器, 还用于向所述无线通信节点发送请求消息, 其中, 所述请求消息用于请求所述无线通信节点向所述基站所述第一状态 报告。
50、 根据权利要求 45所述的基站, 其特征在于,
所述发送器, 还用于向所述无线通信节点发送丟弃消息, 所述丟 弃消息指示丟弃所述 PDCP PDU对应的所述 RLC SDU。
51、 根据权利要求 45所述的基站, 其特征在于,
所述发送器, 还用于向无线通信节点发送第二定时时间, 所述第 二定时时间用于所述无线通信节点启动的第二定时器。
PCT/CN2012/085584 2012-11-29 2012-11-29 一种数据传输的控制方法、装置及系统 WO2014082270A1 (zh)

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