WO2022012525A1 - 数据传输方法、数据传输装置、网络侧设备及第一终端 - Google Patents

数据传输方法、数据传输装置、网络侧设备及第一终端 Download PDF

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Publication number
WO2022012525A1
WO2022012525A1 PCT/CN2021/106001 CN2021106001W WO2022012525A1 WO 2022012525 A1 WO2022012525 A1 WO 2022012525A1 CN 2021106001 W CN2021106001 W CN 2021106001W WO 2022012525 A1 WO2022012525 A1 WO 2022012525A1
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Prior art keywords
transmission path
data
data packet
terminal
target service
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PCT/CN2021/106001
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English (en)
French (fr)
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吴昱民
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维沃移动通信有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/34Modification of an existing route
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/02Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/12Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality

Definitions

  • the present application belongs to the field of communication technologies, and in particular relates to a data transmission method, a data transmission device, a network side device and a first terminal.
  • the transmission path of data can be changed.
  • the network side device usually deletes the original transmission path (referred to as the source path) first, then adds a new transmission path, and resends the data through the new transmission path. data.
  • the cached data of the source path is lost, and the data that has been transmitted through the source path needs to be repeatedly sent on the new transmission path, resulting in the terminal receiving a large amount of repeated data.
  • the purpose of the embodiments of the present application is to provide a data transmission method, a data transmission apparatus, a network-side device and a first terminal, which can solve the problem of repeated data transmission caused by the change of the transmission path.
  • a data transmission method which is applied to a network side device, and the method includes:
  • the first data of the target service is sent on the second transmission path.
  • a data transmission device comprising:
  • a first sending module configured to send a first message, where the first message is used to indicate that the transmission path of the target service is changed from the first transmission path to the second transmission path;
  • a receiving module configured to receive a second message sent by the terminal, where the second message is used to indicate the receiving state of the target service by the terminal on the first transmission path;
  • a second sending module configured to send the first data of the target service on the second transmission path according to the second message.
  • a data transmission method applied to the first terminal, the method includes:
  • a data transmission device comprising:
  • a first receiving module configured to receive a first message sent by the network-side device, where the first message is used to indicate that the transmission path of the target service is changed from the first transmission path to the second transmission path;
  • a sending module configured to send a second message to the network side device, where the second message is used to indicate the receiving state of the target service by the first terminal on the first transmission path.
  • a network-side device in a fifth aspect, includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the The processor implements the steps of the method as described in the first aspect when executed.
  • a first terminal in a sixth aspect, includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the The processor implements the steps of the method as described in the third aspect when executed.
  • a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect, or the The steps of the method described in the third aspect.
  • a chip in an eighth aspect, includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a network-side device program or instruction, and implements the method described in the first aspect. the method described above, or implement the method described in the third aspect.
  • a computer software product is provided, the computer software product is stored in a non-volatile storage medium, the software product is configured to be executed by at least one processor to implement the first aspect The steps of the method, or the steps of implementing the method according to the third aspect.
  • a communication device configured to perform the method of the first aspect, or to perform the method of the third aspect.
  • the network-side device when the data transmission path is changed, can receive the data receiving state of the source receiving path reported by the terminal through the network-side device, so that the network-side device can perform data retransmission according to the data receiving state of the terminal. It can effectively avoid the repeated transmission of data.
  • FIG. 1 is a block diagram of a wireless communication system to which an embodiment of the present application can be applied;
  • FIG. 2 is a flowchart of a data transmission method provided by an embodiment of the present application.
  • FIG. 3 is a structural diagram of a data transmission device provided by an embodiment of the present application.
  • FIG. 5 is a structural diagram of another data transmission device provided by an embodiment of the present application.
  • FIG. 6 is a structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 7 is a hardware structure diagram of a network side device provided by an embodiment of the present application.
  • FIG. 8 is a hardware structural diagram of a first terminal provided by an embodiment of the present application.
  • first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and "first”, “second” distinguishes Usually it is a class, and the number of objects is not limited.
  • the first object may be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the contextual objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • system and “network” in the embodiments of the present application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies.
  • NR New Radio
  • NR terminology is used in most of the following description, although these techniques are also applicable to applications other than NR system applications, such as 6th generation ( 6th Generation, 6G) communication system.
  • FIG. 1 shows a block diagram of a wireless communication system to which the embodiments of the present application can be applied.
  • the wireless communication system includes a terminal 11 and a network-side device 12 .
  • the terminal 11 may also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital computer Assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device (Vehicle user equipment, VUE), pedestrian terminal (pedestrian user equipment, PUE) and other terminal-side equipment, wearable devices include: bracelets, headphones, glasses, etc.
  • the network side device 12 may be a base station or a core network, wherein the base station may be referred to as a Node B, an evolved Node B, an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a basic service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (evolved Node B, eNB), Home Node B, Home Evolved Node B, Wireless Local Area Network (wireless local area network) area network, WLAN) access point, wireless fidelity (WiFi) node, Transmitting Receiving Point (TRP) or some other appropriate term in the field, as long as the same technical effect is achieved, all
  • the base station described above is not limited to specific technical vocabulary. It should be noted that, in the embodiments of the present application, only the base station in the NR system
  • FIG. 2 is a flowchart of a data transmission method provided by an embodiment of the present application. As shown in FIG. 2 , the data transmission method is applied to a network side device, and the method includes the following steps:
  • Step 201 Send a first message, where the first message is used to indicate that the transmission path of the target service is changed from the first transmission path to the second transmission path.
  • services In the field of communication technology, services generally include multicast services, such as multimedia broadcast and multicast services (Multimedia Broadcast and Multicast Service, MBMS), broadcast multicast services (Multicast Broadcast Service, MBS) and unicast services.
  • MBMS Multimedia Broadcast and Multicast Service
  • MBS Multicast Broadcast Service
  • MBMS is generally transmitted in the following two ways: First, in MBMS Single Frequency Network (Multimedia Broadcast multicast service Single Frequency Network, MBSFN) subframes through Physical Multicast Channel (Physical Multicast Channel, PMCH) transmission, wherein, the control information is transmitted through System information (such as SIB13) and a multicast control channel (Multicast Control Channel, MCCH) are transmitted, and data is transmitted through a multicast traffic channel (Multicast Traffic Channel, MTCH).
  • MBSFN Multimedia Broadcast multicast multicast service Single Frequency Network
  • PMCH Physical Multicast Channel
  • MCCH Multicast Control Channel
  • MTCH Multicast Traffic Channel
  • the physical downlink control channel (Physical Downlink Shared Channel, PDSCH) channel scheduled by the physical downlink control channel (Physical Downlink Control Channel, PDCCH) is transmitted, wherein the control information is transmitted through system information (such as SIB20) and single-cell multicast control.
  • system information such as SIB20
  • SC-MCCH Single Cell Multicast Control Channel
  • SC-MTCH Single Cell Multicast Traffic Channel
  • the SC-MCCH is transmitted through the PDSCH scheduled by the single cell RNTI (Radio Network Temporary Identifier) (Single Cell RNTI, SC-RNTI) PDCCH
  • the SC-MTCH is transmitted through the GSM/EDGE wireless access network wireless network temporary identifier (GERAN Radio Network Temporary Identifier, G-RNTI) PDSCH transmission scheduled by PDCCH
  • MBS services are generally transmitted through a specific MBMS Radio Bearer (MRB), and MBS services can be marked by identifiers such as Temporary Mobile Group Identity (TMGI) and quality of service (QoS) flow ID.
  • TMGI Temporary Mobile Group Identity
  • QoS quality of service
  • Unicast services are generally transmitted through a specific unicast data radio bearer (Data Radio Bearer, DRB).
  • the target service may be understood as a specific service, the target service may be either a multicast service or a unicast service, and the network side device may indicate the target service through indication information.
  • the network side device may indicate the target service through the first message, that is, the first message may include indication information of the target service.
  • the indication information used to indicate the target service may include session identification (such as Protocol Data Unit (PDU) Session-1), data flow identification (such as QoS flow-1), and multicast service identification (such as TMGI-1) at least one of.
  • session identification such as Protocol Data Unit (PDU) Session-1
  • data flow identification such as QoS flow-1
  • TMGI-1 multicast service identification
  • the change of the transmission path of the target service may include the change of the sending path of the target service, and may also include the change of the receiving path of the target service. That is to say, the network-side device can use the first message to indicate that the sending path of the target service is changed from the first sending path to the second sending path. In this way, the network-side device can send the data of the target service to the terminal through the second sending path. , the terminal can receive the data of the target service sent by the network side device through the receiving path corresponding to the second sending path. The network-side device may also use the first message to indicate that the receiving path of the target service is changed from the first receiving path to the second receiving path. In this way, the network-side device can send data of the target service to the terminal through the sending path corresponding to the second receiving path. , the terminal can receive the data of the target service sent by the network side device through the second receiving path.
  • the first transmission path may also be referred to as a source path (such as a source receiving path, a source sending path, or a source bearer, etc.), and the second transmission path may also be referred to as a target path (such as a target receiving path or a source bearer). target sending path or target bearer, etc.).
  • a source path such as a source receiving path, a source sending path, or a source bearer, etc.
  • target path such as a target receiving path or a source bearer.
  • the first transmission path may be either a transmission path in a unicast transmission mode or a transmission path in a multicast transmission mode; correspondingly, the second transmission path The path may be either a transmission path in a unicast transmission mode or a transmission path in a multicast transmission mode.
  • the first transmission path is a transmission path in a unicast transmission manner
  • the second transmission path is a transmission path in a multicast transmission manner.
  • the first transmission path is DRB
  • the second transmission path is MRB.
  • the first transmission path is a unicast receiving radio link control (Radio Link Control, RLC) entity of Radio Bearer-1 (Radio Bearer-1, RB-1)
  • the second transmission path is a multicast of RB-1 RLC entity is received.
  • RLC Radio Link Control
  • the first transmission path is a transmission path in a multicast transmission mode
  • the second transmission path is a transmission path in a unicast transmission mode.
  • the first transmission path is MRB
  • the second transmission path is DRB.
  • the first transmission path is a multicast RLC receiving entity of RB-1
  • the second transmission path is a unicast RLC receiving entity of RB-1.
  • the first transmission path and the second transmission path are transmission paths of different radio bearers respectively.
  • the first transmission path is MRB-1 and the second transmission path is DRB-1; or, the first transmission path is DRB-2 and the second transmission path is MRB-2.
  • the first transmission path and the second transmission path are different transmission paths of the same radio bearer.
  • bearer 1 has one Packet Data Convergence Protocol (PDCP) receiving entity, and the PDCP receiving entity is associated with two RLC receiving entities, where RLC-1 corresponds to the first transmission path, and RLC-2 corresponds to the second transmission path.
  • PDCP Packet Data Convergence Protocol
  • the network side device may send a first message to the terminal, where the first message is used to instruct the terminal to change the multicast service of TMGI-1 in MRB-1 to DRB-1 for reception.
  • Step 202 Receive a second message sent by the terminal, where the second message is used to indicate the receiving state of the target service by the terminal on the first transmission path.
  • the above-mentioned second message may be transmitted through at least one transmission path among the first transmission path and the second transmission path, so as to improve the transmission reliability of the second message.
  • the terminal may send the second message through the sending path corresponding to the first receiving path.
  • the terminal can send the second message through the uplink sending RLC entity corresponding to the source DRB, can also send the second message through the uplink sending RLC entity corresponding to the target DRB, and can also send the RLC entity through the uplink corresponding to the source DRB and the target DRB. to send the second message.
  • the type of the RLC entity of the source path corresponding to the second message can be any one of the unacknowledged mode (Unacknowledged Mode, UM mode) and the confirmed mode (Acknowledged Mode, AM mode), to further improve the second message's RLC entity type. Transmission reliability.
  • Unacknowledged Mode UM mode
  • Acknowledged Mode AM mode
  • the timing for the terminal to send the second message to the network side device may be after receiving the first message, that is, after the terminal receives the message that the transmission path of the target service is changed, the terminal may send the network side device The device reports the second message. Since the second message is used to indicate the receiving state of the target service by the terminal on the first transmission path, the second message can be understood as data receiving state information. Therefore, when the terminal reports the second message to the network side device, it can be understood that the terminal sends the network The side device reports the data receiving status of the target service on the source receiving path.
  • the network side device when the transmission path of the target service is changed, the network side device can be informed of the data reception status of the terminal on the source receiving path by receiving the data receiving state of the source receiving path reported by the terminal through the network side device. Therefore, the network side device can be guided to retransmit the data of the target service, and the network side device can be prevented from performing repeated data transmission.
  • Step 203 Send the first data of the target service on the second transmission path according to the second message.
  • the network-side device may determine the data of the target service that needs to be retransmitted, that is, the first data of the target service, according to the data receiving state of the source receiving path reported by the terminal, and send the first data of the target service through the second transmission path. data.
  • the network-side device when the data transmission path is changed, can receive the data receiving state of the source receiving path reported by the terminal through the network-side device, so that the network-side device can perform data retransmission according to the data receiving state of the terminal. It can effectively avoid the repeated transmission of data.
  • the second message includes data packet number information of the target service, and the data packet number information of the target service is used to indicate the receiving state of the target service by the terminal on the first transmission path.
  • the receiving state of the terminal for the target service on the first transmission path is indicated by the data packet number information of the target service, and the indication manner of the receiving state is concise, intuitive and clear.
  • the data packet number information of the target service includes any of the following:
  • the serial number information of the first lost data packet, the serial number information of the previous data packet of the first lost data packet, and the serial number information of the next data packet of the first lost data packet can all be It is understood as the number information of the first lost packet.
  • the terminal may only report the number information of any of the above-mentioned first lost data packets without reporting the reception status information of other data packets except the number information of the first lost data packet. In other words, all packets can be retransmitted starting from the first lost packet.
  • the second message in addition to indicating the terminal's receiving state of the target service on the first transmission path, may also include indication information of the first transmission path.
  • the second message includes the data packet of the above-mentioned target service in addition to The serial number information may also include indication information of the first transmission path.
  • the network-side device can use the second message to distinguish the data receiving state information reported by the terminal for which first transmission path the data receiving state information is, so that the network-side device can more accurately determine the data receiving state information that needs to be sent to the first transmission path according to the second message. Data retransmitted by the second transmission path.
  • the indication information of the first transmission path includes a radio bearer identity (such as DRB-1), a data flow identity (such as QoS flow-1), a session identity (such as PDU Session-1), and a logical channel identity (such as At least one of LCID-1), a cell group identifier (such as a master cell group (Master Cell Group, MCG) or a secondary cell group (Secondary Cell Group, SCG)), and a multicast service identifier (such as TMGI-1).
  • a radio bearer identity such as DRB-1
  • a data flow identity such as QoS flow-1
  • a session identity such as PDU Session-1
  • a logical channel identity such as At least one of LCID-1
  • a cell group identifier such as a master cell group (Master Cell Group, MCG) or a secondary cell group (Secondary Cell Group, SCG)
  • TMGI-1 multicast service identifier
  • the first data of the target service includes:
  • the network-side device may send its data packets after the first lost data packet of the first transmission path to the terminal on the second transmission path, that is, the first lost data packet from the first transmission path , all subsequent data packets including the first lost data packet will be sent through the second transmission path.
  • the network-side device may also send all the data packets lost in the first transmission path to the terminal in the second transmission path, and the network-side device may not repeatedly send data packets that the terminal successfully receives in the first transmission path.
  • the network-side device receives the second message sent by N terminals, and the first lost data packets of the N terminals in the first transmission path are different, the N is is an integer greater than 1, the first data of the target service includes:
  • the data reception status information reported by the multiple terminals may be different.
  • the first lost data packet on the first transmission path reported by the terminal may be different.
  • the first data of the target service sent by the network side device on the second transmission path may exist in the following multiple possible situations.
  • the network side device uses the earliest lost data packet in the first lost data packet of the first transmission path of the multiple terminals as a reference, and the earliest lost data packet and the data packets after the earliest lost data packet. as data that needs to be retransmitted on the second transmission path. For example, UE-1 reports its first lost data packet on the first transmission path as data packet-1, and UE-2 reports its first lost data packet on the first transmission path as data packet-2, Then the earliest lost data packet is data packet-1, and the network-side device starts to retransmit the data packet from data packet-1.
  • the network side device takes the latest data packet lost among the first lost data packets of the multiple terminals in the first transmission path as a reference, and the latest lost data packet and the latest lost data packet
  • the data packet is used as the data that needs to be retransmitted on the second transmission path.
  • UE-1 reports its first lost data packet on the first transmission path as data packet-1
  • UE-2 reports its first lost data packet on the first transmission path as data packet-2
  • the latest lost data packet is data packet-2
  • the network side device starts to retransmit the data packet from data packet-2.
  • the network side device takes the data packets lost by each terminal on the first transmission path as the data that needs to be retransmitted on the second transmission path.
  • the method further includes:
  • a third message is sent, where the third message is used to indicate the data packet number information corresponding to the first data of the target service on the first transmission path.
  • the network-side device may send a third message to the terminal, and use the third message to inform the terminal of the number information corresponding to the first data of the target service in the first transmission path, so that the terminal can receive the target service in the second transmission path
  • the terminal can receive the target service in the second transmission path
  • the first data of the target service it can be determined whether to receive or discard the first data of the target service according to the serial number information of the first data of the target service on the first transmission path.
  • the third message is used to indicate the data Number information of packets 1/2/3 on the first transmission path, that is, 4/5/6.
  • the terminal can know that the data packets 1/2/3 sent by the network-side device on the second transmission path correspond to the data packets 4/5/6 originally on the first transmission path.
  • the execution body may be a data transmission device, or a control module in the data transmission device for executing the data transmission method.
  • the data transmission device provided by the embodiment of the present application is described by taking the data transmission method performed by the data transmission device as an example.
  • FIG. 3 is a structural diagram of a data transmission apparatus provided by an embodiment of the present application. As shown in FIG. 3 , a data transmission apparatus 300 is applied to a network side device, and the data transmission apparatus 300 includes:
  • a first sending module 301 configured to send a first message, where the first message is used to indicate that the transmission path of the target service is changed from the first transmission path to the second transmission path;
  • a receiving module 302 configured to receive a second message sent by the terminal, where the second message is used to indicate the receiving state of the target service by the terminal on the first transmission path;
  • the second sending module 303 is configured to send the first data of the target service on the second transmission path according to the second message.
  • the first data of the target service includes:
  • the network-side device receives the second message sent by N terminals, and the first lost data packets of the N terminals in the first transmission path are different, the N is is an integer greater than 1, the first data of the target service includes:
  • the data transmission apparatus 300 further includes:
  • the third sending module is configured to send a third message, where the third message is used to indicate the packet number information corresponding to the first data of the target service on the first transmission path.
  • the second message includes data packet number information of the target service, and the data packet number information of the target service is used to indicate the receiving state of the target service by the terminal on the first transmission path.
  • the data packet number information of the target service includes any of the following:
  • the first transmission path and the second transmission path are transmission paths of different radio bearers respectively; or,
  • the first transmission path and the second transmission path are different transmission paths of the same radio bearer.
  • the first transmission path is a transmission path in a unicast transmission mode
  • the second transmission path is a transmission path in a multicast transmission mode
  • the first transmission path is a transmission path in a multicast transmission manner
  • the second transmission path is a transmission path in a unicast transmission manner.
  • the first message further includes indication information of the target service, where the indication information includes at least one of a session identifier, a data stream identifier and a multicast service identifier.
  • the second message is transmitted through at least one transmission path among the first transmission path and the second transmission path.
  • the second message further includes indication information of the first transmission path.
  • the indication information of the first transmission path includes at least one of a radio bearer identifier, a data stream identifier, a session identifier, a logical channel identifier, a cell group identifier, and a multicast service identifier.
  • the network-side device when the data transmission path is changed, can receive the data receiving state of the source receiving path reported by the terminal through the network-side device, so that the network-side device can perform data retransmission according to the data receiving state of the terminal. It can effectively avoid the repeated transmission of data.
  • FIG. 4 is a flowchart of a data transmission method provided by an embodiment of the present application. As shown in FIG. 4 , the data transmission method, applied to the first terminal, includes the following steps:
  • Step 401 Receive a first message sent by a network side device, where the first message is used to indicate that the transmission path of the target service is changed from the first transmission path to the second transmission path;
  • Step 402 Send a second message to the network side device, where the second message is used to indicate the receiving state of the target service by the first terminal on the first transmission path.
  • the first terminal may be understood as the terminal 11 in FIG. 1 .
  • the terminal when the data transmission path is changed, the terminal can report the data receiving state of the source receiving path to the network side device, so that the network side device can retransmit the data according to the data receiving state of the terminal. , which can effectively avoid repeated data transmission.
  • the first transmission path and the second transmission path are transmission paths of different radio bearers respectively; or,
  • the first transmission path and the second transmission path are different transmission paths of the same radio bearer.
  • the first transmission path is a transmission path in a unicast transmission mode
  • the second transmission path is a transmission path in a multicast transmission mode
  • the first transmission path is a transmission path in a multicast transmission manner
  • the second transmission path is a transmission path in a unicast transmission manner.
  • the first message further includes indication information of the target service, where the indication information includes at least one of a session identifier, a data stream identifier and a multicast service identifier.
  • the second message is transmitted through at least one transmission path among the first transmission path and the second transmission path.
  • the second message includes the data packet number information of the target service, and the data packet number information of the target service is used to indicate that the first terminal is in the first transmission path to the target service. receive status.
  • the data packet number information of the target service includes any of the following:
  • the second message further includes indication information of the first transmission path.
  • the indication information of the first transmission path includes at least one of a radio bearer identifier, a data stream identifier, a session identifier, a logical channel identifier, a cell group identifier, and a multicast service identifier.
  • the method further includes:
  • the variable of the data receiving window of the second transmission path is adjusted.
  • variable of the data receiving window includes at least one of an upper boundary and a lower boundary of the data receiving window. Since the first terminal determines whether to receive the data packet according to the variable of the data receiving window, such as the lower boundary of the data receiving window, the first terminal adjusts the variable of the data receiving window of the second transmission path according to the second message, so that the The first terminal successfully receives the data of the target service sent by the network side device on the second transmission path, so as to avoid loss of data packets.
  • adjusting the variable of the data receiving window of the second transmission path includes:
  • the first terminal may adjust the variable of the data receiving window of the second transmission path according to the number information of the first lost data packet of the first transmission path, or may submit the data to the The data packet number information of the high-level protocol entity is used to adjust the variable of the data receiving window of the second transmission path.
  • the number of the data packet retransmitted by the network side device on the second transmission path can be located within the range of the data receiving window, thereby ensuring that the first terminal successfully receives the data retransmitted by the network side device on the second transmission path packets to avoid packet loss.
  • the method further includes:
  • the first data of the target service sent by the network-side device is received at the second transmission path.
  • the first data of the target service includes any of the following:
  • the earliest data packet in the first lost data packet of the N terminals in the first transmission path, and the data packet after the earliest data packet, the N terminals include the first terminal;
  • the method further includes:
  • the first terminal by receiving the third message sent by the network-side device, the first terminal can know the number information corresponding to the first transmission path of the data packet retransmitted by the network-side device through the third message, so that the first terminal can When the second transmission path receives the data packets retransmitted by the network side device, it can determine whether to receive or discard the data packets according to the number information corresponding to the first transmission path.
  • the method further includes:
  • the first terminal may discard the data packets that satisfy the preset condition. Specifically, the first terminal may determine, from the first data of the target service, a data packet that satisfies the preset condition according to the data packet number information corresponding to the first data of the target service on the first transmission path indicated by the third message .
  • the data packets that meet the preset conditions include any of the following:
  • the data packet is a data packet delivered to a high-level protocol entity in the first transmission path
  • the data packet is a data packet that is ignored and received on the first transmission path.
  • the high-level protocol entities can sequentially include Service Data Adaptation Protocol (SDAP), PDCP, Radio Link Control (RLC) and Media Access Control (MAC) from top to bottom. ).
  • SDAP Service Data Adaptation Protocol
  • PDCP Packet Control Protocol
  • RLC Radio Link Control
  • MAC Media Access Control
  • the network-side device may retransmit the data packets that the first terminal has received in the first transmission path through the second transmission path, for this part of the data packets, if the first terminal has already submitted the data packets to the higher-layer protocol in the first transmission path entity, the first terminal can abandon this part of the data packet without re-submitting it to the high-level protocol entity. In addition, for the data packets that have been ignored by the first terminal on the first transmission path, even if the network-side device retransmits the data packets through the second transmission path, the first terminal can discard this part of the data packets.
  • the first terminal can save resource transmission overhead and improve the communication performance of the first terminal.
  • the method further includes:
  • the first data of the target service is processed; the second data of the target service is the data received by the first terminal on the first transmission path .
  • the first terminal processes the data received in the first transmission path first, and then processes the data received in the second transmission path, so that when the transmission path of the target service is changed, the first terminal can be ensured.
  • a terminal sequentially processes the data of the target service according to the data receiving sequence of the target service, thereby reducing data loss and avoiding interruption of received data.
  • processing of the second data of the target service includes:
  • the second data of the target service is processed and delivered to the high-level protocol entity.
  • the second data of the target service is processed and submitted to a high-level protocol entity, including any of the following:
  • the second data of the target service is processed by the PDCP entity, and the processed second data of the target service is delivered to the high-level protocol entity.
  • the first terminal may reconstruct the RLC entity of the first transmission path, or may not reconstruct the RLC entity of the first transmission path, but process the buffered second data of the target service and then complete the
  • the RLC service data unit (Service Data Unit, SDU) data is submitted to the high-level protocol entity.
  • the first terminal may also rebuild the PDCP entity of the first transmission path, or may not rebuild the PDCP entity of the first transmission path, but process the buffered second data of the target service and submit it to the high-level protocol entity.
  • processing and delivery of the second data of the target service to a high-level protocol entity includes at least one of the following:
  • the data packets before the first lost data packet are processed and delivered to the high-level protocol entity.
  • the first terminal may ignore the data not received by the first terminal on the first transmission path, and process the data buffered by the first terminal and then deliver it to the high-level protocol entity. For example, if the PDCP receiving entity of the first terminal receives PDCP PDU-1/3 on the first transmission path, but does not receive PDCP PDU-2, the PDCP receiving entity can ignore PDCP PDU-2 and use PDCP PDU-1/3 After processing, for example, the PDCP PDU-1/3 is decrypted or decompressed or the header of the PDCP PDU is removed and then delivered to the higher-layer protocol entity of the PDCP receiving entity.
  • the first terminal may process the data packet before the first lost data packet of the first transmission path and deliver it to the high-level protocol entity, and start the first lost data packet and discard the data packet All subsequent packets.
  • the PDCP receiving entity of the first terminal receives PDCP PDU-1/3/5 in the first transmission path, and PDCP PDU-2 is the first lost data packet, then the PDCP receiving entity processes PDCP PDU-1, For example, the PDCP PDU-1 is decrypted or decompressed, or the PDCP PDU header is removed, and then delivered to the high-level protocol entity of the PDCP receiving entity, while the PDCP PDU-3/5 are discarded.
  • the execution body may be a data transmission device, or a control module in the data transmission device for executing the data transmission method.
  • the data transmission device provided by the embodiment of the present application is described by taking the data transmission method performed by the data transmission device as an example.
  • FIG. 5 is a structural diagram of a data transmission apparatus provided by an embodiment of the present application. As shown in FIG. 5 , a data transmission apparatus 500 is applied to a first terminal, and the data transmission apparatus 500 includes:
  • a first receiving module 501 configured to receive a first message sent by a network-side device, where the first message is used to indicate that the transmission path of the target service is changed from the first transmission path to the second transmission path;
  • the sending module 502 is configured to send a second message to the network side device, where the second message is used to indicate the receiving state of the target service by the first terminal on the first transmission path.
  • the data transmission apparatus 500 further includes:
  • a second receiving module configured to receive, on the second transmission path, the first data of the target service sent by the network-side device.
  • the first data of the target service includes any of the following:
  • the earliest data packet in the first lost data packet of the N terminals in the first transmission path, and the data packet after the earliest data packet, the N terminals include the first terminal;
  • the data transmission apparatus 500 further includes:
  • a third receiving module is configured to receive a third message sent by the network-side device, where the third message is used to indicate packet number information corresponding to the first data of the target service on the first transmission path.
  • the data transmission apparatus 500 further includes:
  • the discarding module is configured to discard the data packets satisfying the preset condition in the first data of the target service.
  • the data packets that meet the preset conditions include any of the following:
  • the data packet is a data packet delivered to a high-level protocol entity in the first transmission path
  • the data packet is a data packet that is ignored and received on the first transmission path.
  • the data transmission apparatus 500 further includes:
  • a processing module configured to process the first data of the target service after processing the second data of the target service; the second data of the target service is the first terminal in the first Data received by the transmission path.
  • processing module is specifically used for:
  • the second data of the target service is processed and delivered to the high-level protocol entity.
  • processing module is specifically used for any of the following:
  • the second data of the target service is processed by the PDCP entity, and the processed second data of the target service is delivered to the high-level protocol entity.
  • processing module is specifically used for at least one of the following:
  • the data packets before the first lost data packet are processed and delivered to the high-level protocol entity.
  • the data transmission apparatus 500 further includes:
  • An adjustment module configured to adjust the variable of the data receiving window of the second transmission path according to the second message.
  • the adjustment module is specifically used for:
  • the second message includes the data packet number information of the target service, and the data packet number information of the target service is used to indicate that the first terminal is in the first transmission path to the target service. receive status.
  • the data packet number information of the target service includes any of the following:
  • the first transmission path and the second transmission path are transmission paths of different radio bearers respectively; or,
  • the first transmission path and the second transmission path are different transmission paths of the same radio bearer.
  • the first transmission path is a transmission path in a unicast transmission mode
  • the second transmission path is a transmission path in a multicast transmission mode
  • the first transmission path is a transmission path in a multicast transmission manner
  • the second transmission path is a transmission path in a unicast transmission manner.
  • the first message further includes indication information of the target service, where the indication information includes at least one of a session identifier, a data stream identifier and a multicast service identifier.
  • the second message is transmitted through at least one transmission path among the first transmission path and the second transmission path.
  • the second message further includes indication information of the first transmission path.
  • the indication information of the first transmission path includes at least one of a radio bearer identifier, a data stream identifier, a session identifier, a logical channel identifier, a cell group identifier, and a multicast service identifier.
  • the data transmission device in this embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal.
  • the device may be a mobile terminal or a non-mobile terminal.
  • the mobile terminal may include, but is not limited to, the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machine, or self-service machine, etc., which are not specifically limited in the embodiments of the present application.
  • the data transmission device in this embodiment of the present application may be a device with an operating system.
  • the operating system may be an Android (Android) operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
  • the data transmission apparatus provided in the embodiment of the present application can implement each process implemented by the method embodiment of FIG. 4 and achieve the same technical effect, and to avoid repetition, details are not repeated here.
  • an embodiment of the present application further provides a communication device 600, including a processor 601, a memory 602, a program or instruction stored in the memory 602 and executable on the processor 601,
  • a communication device 600 including a processor 601, a memory 602, a program or instruction stored in the memory 602 and executable on the processor 601
  • the communication device 600 is a terminal
  • the program or instruction is executed by the processor 601
  • each process of the foregoing data transmission method embodiment can be implemented, and the same technical effect can be achieved.
  • the communication device 600 is a network-side device
  • the program or instruction is executed by the processor 601
  • each process of the above data transmission method embodiment can be implemented, and the same technical effect can be achieved. To avoid repetition, details are not described here.
  • the network side device 700 includes: an antenna 71 , a radio frequency device 72 , and a baseband device 73 .
  • the antenna 71 is connected to the radio frequency device 72 .
  • the radio frequency device 72 receives information through the antenna 71, and sends the received information to the baseband device 73 for processing.
  • the baseband device 73 processes the information to be sent and sends it to the radio frequency device 72
  • the radio frequency device 72 processes the received information and sends it out through the antenna 71 .
  • the above-mentioned frequency band processing apparatus may be located in the baseband apparatus 73 , and the method performed by the network side device in the above embodiments may be implemented in the baseband apparatus 73 .
  • the baseband apparatus 73 includes a processor 74 and a memory 75 .
  • the baseband device 73 may include, for example, at least one baseband board on which a plurality of chips are arranged. As shown in FIG. 7 , one of the chips is, for example, the processor 74 , which is connected to the memory 75 to call the program in the memory 75 and execute it.
  • the network devices shown in the above method embodiments operate.
  • the baseband device 73 may further include a network interface 76 for exchanging information with the radio frequency device 72, and the interface is, for example, a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the network-side device in the embodiment of the present invention further includes: instructions or programs stored on the memory 75 and executable on the processor 74, and the processor 74 invokes the instructions or programs in the memory 75 to execute each module shown in FIG. 3
  • FIG. 8 is a schematic diagram of a hardware structure of a first terminal implementing an embodiment of the present application.
  • the first terminal 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010 and other parts.
  • the first terminal 1000 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 1010 through a power management system, so as to manage charging, discharging, and Power management and other functions.
  • a power source such as a battery
  • the terminal structure shown in FIG. 8 does not constitute a limitation on the first terminal.
  • the first terminal may include more or less components than the one shown, or combine some components, or arrange different components, which will not be described here. Repeat.
  • the input unit 1004 may include a graphics processor (Graphics Processing Unit, GPU) 10041 and a microphone 10042. Such as camera) to obtain still pictures or video image data for processing.
  • the display unit 1006 may include a display panel 10061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 1007 includes a touch panel 10071 and other input devices 10072 .
  • the touch panel 10071 is also called a touch screen.
  • the touch panel 10071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.
  • the radio frequency unit 1001 receives the downlink data from the network side device, and then processes it to the processor 1010; in addition, sends the uplink data to the network side device.
  • the radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • Memory 1009 may be used to store software programs or instructions as well as various data.
  • the memory 1009 may mainly include a storage program or instruction area and a storage data area, wherein the stored program or instruction area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.) and the like.
  • the memory 1009 may include a high-speed random access memory, and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • PROM erasable programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory for example at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
  • the processor 1010 may include one or more processing units; optionally, the processor 1010 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs or instructions, etc. Modem processors mainly deal with wireless communications, such as baseband processors. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 1010.
  • radio frequency unit 1001 is used for:
  • the radio frequency unit 1001 is further used for:
  • the first data of the target service sent by the network-side device is received at the second transmission path.
  • the first data of the target service includes any of the following:
  • the earliest data packet in the first lost data packet of the N terminals in the first transmission path, and the data packet after the earliest data packet, the N terminals include the first terminal;
  • the radio frequency unit 1001 is further used for:
  • the processor 1010 is configured to:
  • the data packets that meet the preset conditions include any of the following:
  • the data packet is a data packet delivered to a high-level protocol entity in the first transmission path
  • the data packet is a data packet that is ignored and received on the first transmission path.
  • the processor 1010 or the radio frequency unit 1001 is further configured to:
  • the first data of the target service is processed; the second data of the target service is the data received by the first terminal on the first transmission path .
  • the processor 1010 or the radio frequency unit 1001 is further configured to:
  • the second data of the target service is processed and delivered to the high-level protocol entity.
  • the processor 1010 or the radio frequency unit 1001 is also used for any of the following:
  • the second data of the target service is processed by the PDCP entity, and the processed second data of the target service is delivered to the high-level protocol entity.
  • the processor 1010 or the radio frequency unit 1001 is further used for at least one of the following:
  • the data packets before the first lost data packet are processed and delivered to the high-level protocol entity.
  • processor 1010 is further configured to:
  • the variable of the data receiving window of the second transmission path is adjusted.
  • processor 1010 is further configured to:
  • the second message includes the data packet number information of the target service, and the data packet number information of the target service is used to indicate that the first terminal is in the first transmission path to the target service. receive status.
  • the data packet number information of the target service includes any of the following:
  • the first transmission path and the second transmission path are transmission paths of different radio bearers respectively; or,
  • the first transmission path and the second transmission path are different transmission paths of the same radio bearer.
  • the first transmission path is a transmission path in a unicast transmission mode
  • the second transmission path is a transmission path in a multicast transmission mode
  • the first transmission path is a transmission path in a multicast transmission manner
  • the second transmission path is a transmission path in a unicast transmission manner.
  • the first message further includes indication information of the target service, where the indication information includes at least one of a session identifier, a data stream identifier and a multicast service identifier.
  • the second message is transmitted through at least one transmission path among the first transmission path and the second transmission path.
  • the second message further includes indication information of the first transmission path.
  • the indication information of the first transmission path includes at least one of a radio bearer identifier, a data stream identifier, a session identifier, a logical channel identifier, a cell group identifier, and a multicast service identifier.
  • the network-side device when the data transmission path is changed, can receive the data receiving state of the source receiving path reported by the terminal through the network-side device, so that the network-side device can perform data retransmission according to the data receiving state of the terminal. It can effectively avoid the repeated transmission of data.
  • the embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, each process of the foregoing data transmission method embodiment can be achieved, and the same can be achieved. In order to avoid repetition, the technical effect will not be repeated here.
  • the processor is the processor in the first terminal or the network side device described in the foregoing embodiment.
  • the readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
  • An embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the above data transmission method embodiments.
  • the chip includes a processor and a communication interface
  • the communication interface is coupled to the processor
  • the processor is configured to run a program or an instruction to implement the above data transmission method embodiments.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.
  • the disclosed apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation.
  • the technical solution of the present application can be embodied in the form of a software product in essence or in a part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of this application.
  • a storage medium such as ROM/RAM, magnetic disk, CD-ROM
  • modules, units, and sub-units can be implemented in one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSP Device, DSPD) ), Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general-purpose processor, controller, microcontroller, microprocessor, in other electronic units or combinations thereof.
  • ASIC Application Specific Integrated Circuits
  • DSP Digital Signal Processor
  • DSP Device Digital Signal Processing Device
  • DSPD Digital Signal Processing Device
  • PLD Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • the technologies described in the embodiments of the present disclosure may be implemented through modules (eg, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure.
  • Software codes may be stored in memory and executed by a processor.
  • the memory can be implemented in the processor or external to the processor.

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Abstract

本申请公开了一种数据传输方法、数据传输装置、网络侧设备及第一终端,属于通信技术领域。其中,应用于网络侧设备的数据传输方法包括:发送第一消息,所述第一消息用于指示目标业务的传输路径从第一传输路径变更至第二传输路径;接收终端发送的第二消息,所述第二消息用于指示所述终端在所述第一传输路径对所述目标业务的接收状态;根据所述第二消息,在所述第二传输路径发送所述目标业务的第一数据。

Description

数据传输方法、数据传输装置、网络侧设备及第一终端
相关申请的交叉引用
本申请主张在2020年7月14日在中国提交的中国专利申请号No.202010676518.2的优先权,其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域,具体涉及一种数据传输方法、数据传输装置、网络侧设备及第一终端。
背景技术
现有技术中,数据的传输路径可以变更,在传输路径变更时,网络侧设备通常先将原来的传输路径(简称源路径)删除,再添加新的传输路径,并通过新的传输路径重新发送数据。这种方式会导致源路径的缓存数据丢失,并且还需要在新的传输路径重复发送已通过源路径传输的数据,导致终端接收大量的重复数据。
发明内容
本申请实施例的目的是提供一种数据传输方法、数据传输装置、网络侧设备及第一终端,能够解决因传输路径变更而导致数据重复传输的问题。
为了解决上述技术问题,本申请是这样实现的:
第一方面,提供了一种数据传输方法,应用于网络侧设备,所述方法包括:
发送第一消息,所述第一消息用于指示目标业务的传输路径从第一传输路径变更至第二传输路径;
接收终端发送的第二消息,所述第二消息用于指示所述终端在所述第一传输路径对所述目标业务的接收状态;
根据所述第二消息,在所述第二传输路径发送所述目标业务的第一数据。
第二方面,提供了一种数据传输装置,包括:
第一发送模块,用于发送第一消息,所述第一消息用于指示目标业务的传输路径从第一传输路径变更至第二传输路径;
接收模块,用于接收终端发送的第二消息,所述第二消息用于指示所述终端在所述第一传输路径对所述目标业务的接收状态;
第二发送模块,用于根据所述第二消息,在所述第二传输路径发送所述目标业务的第一数据。
第三方面,提供了一种数据传输方法,应用于第一终端,所述方法包括:
接收网络侧设备发送的第一消息,所述第一消息用于指示目标业务的传输路径从第一传输路径变更至第二传输路径;
向所述网络侧设备发送第二消息,所述第二消息用于指示所述第一终端在所述第一传输路径对所述目标业务的接收状态。
第四方面,提供了一种数据传输装置,包括:
第一接收模块,用于接收网络侧设备发送的第一消息,所述第一消息用于指示目标业务的传输路径从第一传输路径变更至第二传输路径;
发送模块,用于向所述网络侧设备发送第二消息,所述第二消息用于指示所述第一终端在所述第一传输路径对所述目标业务的接收状态。
第五方面,提供了一种网络侧设备,该网络侧设备包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤。
第六方面,提供了一种第一终端,该第一终端包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第三方面所述的方法的步骤。
第七方面,提供了一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤,或者实现如第三方面所述的方法的步骤。
第八方面,提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行网络侧设备程序或指令,实现如第一方面所述的方法,或实现如第三方面所述的方法。
第九方面,提供了一种计算机软件产品,所述计算机软件产品被存储在 非易失的存储介质中,所述软件产品被配置成被至少一个处理器执行以实现如第一方面所述的方法的步骤,或者实现如第三方面所述的方法的步骤。
第十方面,提供了一种通信设备,所述通信设备被配置成用于执行如第一方面所述的方法,或者执行如第三方面所述的方法。
在本申请实施例中,在数据的传输路径发生变更的情况下,通过网络侧设备接收终端上报的源接收路径的数据接收状态,能够使网络侧设备根据终端的数据接收状态来进行数据的重传,从而能够有效地避免数据重复传输。
附图说明
图1是本申请实施例可应用的一种无线通信系统的框图;
图2是本申请实施例提供的一种数据传输方法的流程图;
图3是本申请实施例提供的一种数据传输装置的结构图;
图4是本申请实施例提供的另一种数据传输方法的流程图;
图5是本申请实施例提供的另一种数据传输装置的结构图;
图6是本申请实施例提供的通信设备的结构图;
图7是本申请实施例提供的网络侧设备的硬件结构图;
图8是本申请实施例提供的第一终端的硬件结构图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,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,都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象,而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施,且“第一”、“第二”所区别的对象通常为一类,并不限定对象的个数,例如第一对象可以是一个,也可以是多个。此外,说明书以及权利要求中“和/或”表示所连接对象的至少其中之一,字符“/”一 般表示前后关联对象是一种“或”的关系。
值得指出的是,本申请实施例所描述的技术不限于长期演进型(Long Term Evolution,LTE)/LTE的演进(LTE-Advanced,LTE-A)系统,还可用于其他无线通信系统,诸如码分多址(Code Division Multiple Access,CDMA)、时分多址(Time Division Multiple Access,TDMA)、频分多址(Frequency Division Multiple Access,FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access,SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用,所描述的技术既可用于以上提及的系统和无线电技术,也可用于其他系统和无线电技术。然而,以下描述出于示例目的描述了新空口(New Radio,NR)系统,并且在以下大部分描述中使用NR术语,尽管这些技术也可应用于NR系统应用以外的应用,如第6代(6th Generation,6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中,终端11也可以称作终端设备或者用户终端(User Equipment,UE),终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant,PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer,UMPC)、移动上网装置(Mobile Internet Device,MID)、可穿戴式设备(Wearable Device)或车载设备(vehicle user equipment,VUE)、行人终端(pedestrian user equipment,PUE)等终端侧设备,可穿戴式设备包括:手环、耳机、眼镜等。需要说明的是,在本申请实施例并不限定终端11的具体类型。网络侧设备12可以是基站或核心网,其中,基站可被称为节点B、演进节点B、接入点、基收发机站(Base Transceiver Station,BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set,BSS)、扩展服务集(Extended Service Set,ESS)、B节点、演进型B节点(evolved Node B,eNB)、家用B节点、家用演进型B节点、无线局域网(wireless local area network,WLAN)接入点、无线保真(wireless fidelity,WiFi)节点、发送接收点(Transmitting Receiving Point,TRP)或所述领域中其他某个合适的 术语,只要达到相同的技术效果,所述基站不限于特定技术词汇,需要说明的是,在本申请实施例中仅以NR系统中的基站为例,但是并不限定基站的具体类型。
下面结合附图,通过具体的实施例及其应用场景对本申请实施例提供的数据传输方法、数据传输装置、网络侧设备及第一终端进行详细地说明。
图2是本申请实施例提供的一种数据传输方法的流程图,如图2所示,数据传输方法,应用于网络侧设备,该方法包括以下步骤:
步骤201:发送第一消息,所述第一消息用于指示目标业务的传输路径从第一传输路径变更至第二传输路径。
在通信技术领域,业务一般包括多播业务,例如多媒体广播多播业务(Multimedia Broadcast and Multicast Service,MBMS)、广播多播业务(Multicast Broadcast Service,MBS)和单播业务。
MBMS一般通过以下两种方式传输:其一,在MBMS单频网(Multimedia Broadcast multicast service Single Frequency Network,MBSFN)子帧中通过物理多播信道(Physical Multicast Channel,PMCH)传输,其中,控制信息通过系统信息(如SIB13)和多播控制信道(Multicast Control Channel,MCCH)传输,数据通过多播业务信道(Multicast Traffic Channel,MTCH)传输。其二,通过物理下行控制信道(Physical Downlink Control Channel,PDCCH)调度的物理下行控制信道(Physical Downlink Shared Channel,PDSCH)信道传输,其中,控制信息通过系统信息(如SIB20)和单小区多播控制信道(Single Cell Multicast Control Channel,SC-MCCH)传输,数据通过单小区多播业务信道(Single Cell Multicast Traffic Channel,SC-MTCH)传输。其中,SC-MCCH通过单小区RNTI(Radio Network Temporary Identifier,无线网络临时标识)(Single Cell RNTI,SC-RNTI)PDCCH调度的PDSCH传输,SC-MTCH通过GSM/EDGE无线接入网无线网络临时标识(GERAN Radio Network Temporary Identifier,G-RNTI)PDCCH调度的PDSCH传输。MBS业务一般通过特定的MBMS无线承载(MBMS Radio Bearer,MRB)传输,MBS业务可以通过临时移动组标识(Temporary Mobile Group Identity,TMGI)和服务质量(quality of service,QoS)flow ID等标识标记。单播业务一般通过特定 的单播数据无线承载(Data Radio Bearer,DRB)传输。
本申请实施例中,目标业务可以理解为特定业务,目标业务既可以是多播业务,也可以是单播业务,网络侧设备可以通过指示信息来指示目标业务。网络侧设备可通过第一消息来指示目标业务,即,第一消息可包括目标业务的指示信息。用于指示目标业务的指示信息可以包括会话标识(如协议数据单元(Protocol Data Unit,PDU)Session-1)、数据流标识(如QoS flow-1)和多播业务标识(如TMGI-1)中的至少一项。
本申请实施例中,目标业务的传输路径的变更既可以包括目标业务的发送路径的变更,也可以包括目标业务的接收路径的变更。也就是说,网络侧设备既可以通过第一消息来指示目标业务的发送路径从第一发送路径变更至第二发送路径,这样,网络侧设备可通过第二发送路径向终端发送目标业务的数据,终端可通过第二发送路径对应的接收路径接收网络侧设备发送的目标业务的数据。网络侧设备也可以通过第一消息来指示目标业务的接收路径从第一接收路径变更至第二接收路径,这样,网络侧设备可通过第二接收路径对应的发送路径向终端发送目标业务的数据,终端可通过第二接收路径接收网络侧设备发送的目标业务的数据。
本申请实施例中,第一传输路径也可称之为源路径(如源接收路径或源发送路径或源承载等表述),第二传输路径也可称之为目标路径(如目标接收路径或目标发送路径或目标承载等表述)。
本申请实施例中,无论目标业务是单播业务还是多播业务,第一传输路径既可以为单播传输方式的传输路径,也可以为多播传输方式的传输路径;相应的,第二传输路径既可以为单播传输方式的传输路径,也可以为多播传输方式的传输路径。
可选的,所述第一传输路径为单播传输方式的传输路径,所述第二传输路径为多播传输方式的传输路径。例如,第一传输路径为DRB,第二传输路径为MRB。又例如,第一传输路径为无线承载-1(Radio Bearer-1,RB-1)的单播接收无线链路控制(Radio Link Control,RLC)实体,第二传输路径为RB-1的多播接收RLC实体。
可选的,所述第一传输路径为多播传输方式的传输路径,所述第二传输 路径为单播传输方式的传输路径。例如,第一传输路径为MRB,第二传输路径为DRB。又例如,第一传输路径为RB-1的多播RLC接收实体,第二传输路径为RB-1的单播RLC接收实体。
可选的,所述第一传输路径和所述第二传输路径分别为不同无线承载的传输路径。例如,第一传输路径为MRB-1,第二传输路径为DRB-1;或者,第一传输路径为DRB-2,第二传输路径为MRB-2。
可选的,所述第一传输路径和所述第二传输路径为同一无线承载的不同传输路径。例如,承载1有1个分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)接收实体,该PDCP接收实体关联了2个RLC接收实体,其中RLC-1对应第一传输路径,RLC-2对应第二传输路径。
作为示例,步骤201中,网络侧设备可向终端发送第一消息,该第一消息用于指示终端将MRB-1中的TMGI-1的多播业务变更到DRB-1中进行接收。
步骤202:接收终端发送的第二消息,所述第二消息用于指示所述终端在所述第一传输路径对所述目标业务的接收状态。
上述第二消息可通过第一传输路径和第二传输路径中的至少一个传输路径传输,以提高第二消息的传输可靠性。假设第一消息用于指示目标业务的接收路径从第一接收路径变更至第二接收路径,那么,终端既可以通过第一接收路径对应的发送路径来发送第二消息。例如,终端可通过源DRB对应的上行发送RLC实体来发送第二消息,也可以通过目标DRB对应的上行发送RLC实体来发送第二消息,还可以通过源DRB和目标DRB对应的上行发送RLC实体来发送第二消息。
进一步的,第二消息对应的源路径的RLC实体的类型可以为非确认模式(Unacknowledged Mode,UM模式)和确认模式(Acknowledged Mode,AM模式)中的任一种,以进一步提高第二消息的传输可靠性。
本申请实施例中,终端向网络侧设备发送第二消息的时机可以在接收到第一消息之后,也就是说,终端在接收到目标业务的传输路径发生变更的消息之后,终端可以向网络侧设备上报第二消息。由于第二消息用于指示终端在第一传输路径对目标业务的接收状态,第二消息可以理解为数据接收状态 信息,因此,终端向网络侧设备上报第二消息,可以理解为,终端向网络侧设备上报在源接收路径的目标业务的数据接收状态。
本申请实施例中,在目标业务的传输路径发生变更的情况下,通过网络侧设备接收终端上报的源接收路径的数据接收状态,能够使网络侧设备知晓终端在源接收路径的数据接收情况,从而能够指导网络侧设备进行目标业务的数据重传,避免网络侧设备进行重复的数据传输。
步骤203:根据所述第二消息,在所述第二传输路径发送所述目标业务的第一数据。
该步骤中,网络侧设备可以根据终端上报的源接收路径的数据接收状态,确定需要重传的目标业务的数据,即目标业务的第一数据,并通过第二传输路径发送目标业务的第一数据。
在本申请实施例中,在数据的传输路径发生变更的情况下,通过网络侧设备接收终端上报的源接收路径的数据接收状态,能够使网络侧设备根据终端的数据接收状态来进行数据的重传,从而能够有效地避免数据重复传输。
可选的,所述第二消息包括所述目标业务的数据包编号信息,所述目标业务的数据包编号信息用于指示所述终端在所述第一传输路径对所述目标业务的接收状态。
该实施方式中,通过目标业务的数据包编号信息来指示终端在第一传输路径对目标业务的接收状态,这种接收状态的指示方式具有简洁、直观、明了的特点。
可选的,所述目标业务的数据包编号信息包括以下任一项:
所述终端在所述第一传输路径的第一个丢失的数据包的编号信息;
所述终端在所述第一传输路径的第一个丢失的数据包的前一个数据包的编号信息;
所述终端在所述第一传输路径的第一个丢失的数据包的后一个数据包的编号信息;
所述终端在所述第一传输路径丢失的数据包的编号信息;
所述终端在所述第一传输路径接收的数据包的编号信息。
该实施方式中,第一个丢失的数据包的编号信息、第一个丢失的数据包 的前一个数据包的编号信息以及第一个丢失的数据包的后一个数据包的编号信息,均可以理解为第一个丢失的数据包的编号信息。终端可以仅上报上述任一种第一个丢失的数据包的编号信息,而不上报第一个丢失的数据包的编号信息之外的其他数据包的接收状态信息,这样,对于网络侧设备而言,可以从第一个丢失的数据包开始重传所有的数据包。
本申请实施例中,第二消息除了用于指示终端在第一传输路径对目标业务的接收状态,还可以包括第一传输路径的指示信息,例如,第二消息除了包括上述目标业务的数据包编号信息,还可以包括第一传输路径的指示信息。这样,网络侧设备即可通过第二消息区分终端上报的数据接收状态信息是针对在哪个第一传输路径的数据接收状态信息,从而能够使网络侧设备根据第二消息,更准确地确定需要在第二传输路径重传的数据。
可选的,所述第一传输路径的指示信息包括无线承载标识(如DRB-1)、数据流标识(如QoS flow-1)、会话标识(如PDU Session-1)、逻辑信道标识(如LCID-1)、小区组标识(如主小区组(Master Cell Group,MCG)或辅小区组(Secondary Cell Group,SCG))和多播业务标识(如TMGI-1)中的至少一项。
可选的,所述目标业务的第一数据包括:
所述终端在所述第一传输路径的第一个丢失的数据包,以及所述第一个丢失的数据包之后的数据包;或者,
所述终端在所述第一传输路径丢失的数据包。
该实施方式中,网络侧设备可以在第二传输路径向终端发送其在第一传输路径的第一个丢失的数据包之后的数据包,也就是说,从第一传输路径的第一个丢失的数据包开始,将包括该第一个丢失的数据包的后续所有数据包都通过第二传输路径进行发送。网络侧设备也可以在第二传输路径向终端发送其在第一传输路径丢失的全部数据包,而对于终端在第一传输路径接收成功的数据包,网络侧设备可不再重复发送。
可选的,若所述网络侧设备接收到N个终端发送的所述第二消息,且所述N个终端在所述第一传输路径的第一个丢失的数据包不同,所述N为大于1的整数,则所述目标业务的第一数据包括:
所述N个终端在所述第一传输路径的第一个丢失的数据包中最早的数据包,以及所述最早的数据包之后的数据包;或者,
所述N个终端在所述第一传输路径的第一个丢失的数据包中最晚的数据包,以及所述最晚的数据包之后的数据包。
该实施方式中,当有多个终端向网络侧设备上报或反馈在第一传输路径的的目标业务的数据接收状态信息时,这多个终端上报的数据接收状态信息可能不同,例如,多个终端上报的在第一传输路径的第一个丢失的数据包可能不同。那么,在这种情况下,网络侧设备在第二传输路径发送的目标业务的第一数据可存在以下多种可能的情况。
其一,网络侧设备以多个终端在第一传输路径的第一个丢失的数据包中最早丢失的数据包为参考,将该最早丢失的数据包以及该最早丢失的数据包之后的数据包作为需要在第二传输路径上重传的数据。例如,UE-1上报其在第一传输路径的第一个丢失的数据包为数据包-1,UE-2上报其在第一传输路径的第一个丢失的数据包为数据包-2,则最早丢失的数据包为数据包-1,网络侧设备从数据包-1开始重传数据包。
其二,网络侧设备以多个终端在第一传输路径的第一个丢失的数据包中最晚丢失的数据包为参考,将该最晚丢失的数据包以及该最晚丢失的数据包之后的数据包作为需要在第二传输路径上重传的数据。例如,UE-1上报其在第一传输路径的第一个丢失的数据包为数据包-1,UE-2上报其在第一传输路径的第一个丢失的数据包为数据包-2,则最晚丢失的数据包为数据包-2,网络侧设备从数据包-2开始重传数据包。
其三,网络侧设备将每个终端在第一传输路径丢失的数据包作为需要在第二传输路径上重传的数据。
可选的,所述方法还包括:
发送第三消息,所述第三消息用于指示所述目标业务的第一数据在所述第一传输路径所对应的数据包编号信息。
该实施方式中,网络侧设备可向终端发送第三消息,通过第三消息告知终端目标业务的第一数据在第一传输路径所对应的编号信息,以使终端在第二传输路径接收目标业务的第一数据时,能够根据目标业务的第一数据在第 一传输路径的编号信息,确定是接收还是丢弃目标业务的第一数据。
例如,假设网络侧设备在第二传输路径发送数据包1/2/3,该数据包1/2/3在第一传输路径的编号为4/5/6,则第三消息用于指示数据包1/2/3在第一传输路径的编号信息,即4/5/6。这样,终端就能够知晓网络侧设备在第二传输路径发送的数据包1/2/3,是对应原先在第一传输路径的数据包4/5/6。
需要说明的是,本申请实施例提供的数据传输方法,执行主体可以为数据传输装置,或者,该数据传输装置中的用于执行数据传输方法的控制模块。本申请实施例中以数据传输装置执行数据传输方法为例,说明本申请实施例提供的数据传输装置。
图3是本申请实施例提供的一种数据传输装置的结构图,如图3所示,数据传输装置300,应用于网络侧设备,数据传输装置300包括:
第一发送模块301,用于发送第一消息,所述第一消息用于指示目标业务的传输路径从第一传输路径变更至第二传输路径;
接收模块302,用于接收终端发送的第二消息,所述第二消息用于指示所述终端在所述第一传输路径对所述目标业务的接收状态;
第二发送模块303,用于根据所述第二消息,在所述第二传输路径发送所述目标业务的第一数据。
可选的,所述目标业务的第一数据包括:
所述终端在所述第一传输路径的第一个丢失的数据包,以及所述第一个丢失的数据包之后的数据包;或者,
所述终端在所述第一传输路径丢失的数据包。
可选的,若所述网络侧设备接收到N个终端发送的所述第二消息,且所述N个终端在所述第一传输路径的第一个丢失的数据包不同,所述N为大于1的整数,则所述目标业务的第一数据包括:
所述N个终端在所述第一传输路径的第一个丢失的数据包中最早的数据包,以及所述最早的数据包之后的数据包;或者,
所述N个终端在所述第一传输路径的第一个丢失的数据包中最晚的数据包,以及所述最晚的数据包之后的数据包。
可选的,数据传输装置300还包括:
第三发送模块,用于发送第三消息,所述第三消息用于指示所述目标业务的第一数据在所述第一传输路径所对应的数据包编号信息。
可选的,所述第二消息包括所述目标业务的数据包编号信息,所述目标业务的数据包编号信息用于指示所述终端在所述第一传输路径对所述目标业务的接收状态。
可选的,所述目标业务的数据包编号信息包括以下任一项:
所述终端在所述第一传输路径的第一个丢失的数据包的编号信息;
所述终端在所述第一传输路径的第一个丢失的数据包的前一个数据包的编号信息;
所述终端在所述第一传输路径的第一个丢失的数据包的后一个数据包的编号信息;
所述终端在所述第一传输路径丢失的数据包的编号信息;
所述终端在所述第一传输路径接收的数据包的编号信息。
可选的,所述第一传输路径和所述第二传输路径分别为不同无线承载的传输路径;或者,
所述第一传输路径和所述第二传输路径为同一无线承载的不同传输路径。
可选的,所述第一传输路径为单播传输方式的传输路径,所述第二传输路径为多播传输方式的传输路径;或者,
所述第一传输路径为多播传输方式的传输路径,所述第二传输路径为单播传输方式的传输路径。
可选的,所述第一消息还包括所述目标业务的指示信息,所述指示信息包括会话标识、数据流标识和多播业务标识中的至少一项。
可选的,所述第二消息通过所述第一传输路径和所述第二传输路径中的至少一个传输路径传输。
可选的,所述第二消息还包括所述第一传输路径的指示信息。
可选的,所述第一传输路径的指示信息包括无线承载标识、数据流标识、会话标识、逻辑信道标识、小区组标识和多播业务标识中的至少一项。
在本申请实施例中,在数据的传输路径发生变更的情况下,通过网络侧设备接收终端上报的源接收路径的数据接收状态,能够使网络侧设备根据终 端的数据接收状态来进行数据的重传,从而能够有效地避免数据重复传输。
图4是本申请实施例提供的一种数据传输方法的流程图,如图4所示,数据传输方法,应用于第一终端,该方法包括以下步骤:
步骤401:接收网络侧设备发送的第一消息,所述第一消息用于指示目标业务的传输路径从第一传输路径变更至第二传输路径;
步骤402:向所述网络侧设备发送第二消息,所述第二消息用于指示所述第一终端在所述第一传输路径对所述目标业务的接收状态。
本申请实施例中,第一终端可以理解为图1中的终端11。
在本申请实施例中,在数据的传输路径发生变更的情况下,通过终端向网络侧设备上报源接收路径的数据接收状态,能够使网络侧设备根据终端的数据接收状态来进行数据的重传,从而能够有效地避免数据重复传输。
可选的,所述第一传输路径和所述第二传输路径分别为不同无线承载的传输路径;或者,
所述第一传输路径和所述第二传输路径为同一无线承载的不同传输路径。
可选的,所述第一传输路径为单播传输方式的传输路径,所述第二传输路径为多播传输方式的传输路径;或者,
所述第一传输路径为多播传输方式的传输路径,所述第二传输路径为单播传输方式的传输路径。
可选的,所述第一消息还包括所述目标业务的指示信息,所述指示信息包括会话标识、数据流标识和多播业务标识中的至少一项。
可选的,所述第二消息通过所述第一传输路径和所述第二传输路径中的至少一个传输路径传输。
可选的,所述第二消息包括所述目标业务的数据包编号信息,所述目标业务的数据包编号信息用于指示所述第一终端在所述第一传输路径对所述目标业务的接收状态。
可选的,所述目标业务的数据包编号信息包括以下任一项:
所述第一终端在所述第一传输路径的第一个丢失的数据包的编号信息;
所述第一终端在所述第一传输路径的第一个丢失的数据包的前一个数据包的编号信息;
所述第一终端在所述第一传输路径的第一个丢失的数据包的后一个数据包的编号信息;
所述第一终端在所述第一传输路径丢失的数据包的编号信息;
所述第一终端在所述第一传输路径接收的数据包的编号信息。
可选的,所述第二消息还包括所述第一传输路径的指示信息。
可选的,所述第一传输路径的指示信息包括无线承载标识、数据流标识、会话标识、逻辑信道标识、小区组标识和多播业务标识中的至少一项。
可选的,所述方法还包括:
根据所述第二消息,调整所述第二传输路径的数据接收窗口的变量。
该实施方式中,数据接收窗口的变量包括数据接收窗口的上边界和下边界中的至少一项。由于第一终端是根据数据接收窗口的变量,例如数据接收窗口的下边界,来确定是否接收数据包,因此,第一终端根据第二消息调整第二传输路径的数据接收窗口的变量,能够使第一终端成功接收到网络侧设备在第二传输路径发送的目标业务的数据,避免数据包的丢失。
可选的,所述根据所述第二消息,调整所述第二传输路径的数据接收窗口的变量,包括:
将所述第二传输路径当前最后一个递交至高层协议实体的数据包的编号调整为第一编号,所述第一编号为所述第一终端在所述第一传输路径,第一个丢失的数据包的前一个数据包的编号或最后一个递交至高层协议实体的数据包的编号;或者,
将所述第二传输路径当前第一个待接收的数据包的编号调整为第二编号,所述第二编号为所述第一终端在所述第一传输路径,第一个丢失的数据包的编号。
该实施方式中,第一终端可以根据第一传输路径的第一个丢失的数据包的编号信息来调整第二传输路径的数据接收窗口的变量,也可以根据第一传输路径的最后一个递交至高层协议实体的数据包的编号信息来调整第二传输路径的数据接收窗口的变量。
通过上述调整,能够使网络侧设备在第二传输路径重传的数据包的编号位于数据接收窗口的范围内,从而能够确保第一终端成功接收到网络侧设备 在第二传输路径重传的数据包,避免数据包的丢失。
可选的,所述方法还包括:
在所述第二传输路径接收所述网络侧设备发送的所述目标业务的第一数据。
可选的,所述目标业务的第一数据包括以下任一项:
所述第一终端在所述第一传输路径的第一个丢失的数据包,以及所述第一个丢失的数据包之后的数据包;
所述第一终端在所述第一传输路径丢失的数据包;
N个终端在所述第一传输路径的第一个丢失的数据包中最早的数据包,以及所述最早的数据包之后的数据包,所述N个终端包括所述第一终端;
所述N个终端在所述第一传输路径的第一个丢失的数据包中最晚的数据包,以及所述最晚的数据包之后的数据包。
可选的,所述方法还包括:
接收所述网络侧设备发送的第三消息,所述第三消息用于指示所述目标业务的第一数据在所述第一传输路径所对应的数据包编号信息。
该实施方式中,通过接收网络侧设备发送的第三消息,第一终端可通过第三消息知晓网络侧设备重传的数据包在第一传输路径所对应的编号信息,以使第一终端在第二传输路径接收网络侧设备重传的数据包时,能够其在第一传输路径所对应的编号信息,确定是接收还是丢弃这些数据包。
可选的,所述方法还包括:
将所述目标业务的第一数据中满足预设条件的数据包丢弃。
该实施方式中,第一终端在接收到网络侧设备发送的目标业务的第一数据之后,可以将其中满足预设条件的数据包丢弃。具体的,第一终端可以根据第三消息所指示的目标业务的第一数据在第一传输路径所对应的数据包编号信息,从目标业务的第一数据中确定出满足预设条件的数据包。
可选的,所述满足预设条件的数据包包括以下任一项:
所述数据包为在所述第一传输路径递交至高层协议实体的数据包;
所述数据包为在所述第一传输路径被忽略接收的数据包。
其中,高层协议实体从上至下可依次包括业务数据适配协议(Service Data  Adaptation Protocol,SDAP)、PDCP、无线链路控制(Radio Link Control,RLC)和媒体接入控制(Media Access Control,MAC)。
由于网络侧设备通过第二传输路径可能会重传第一终端已在第一传输路径接收到的数据包,因此,对于这部分数据包,如果第一终端已经在第一传输路径递交至高层协议实体,则第一终端可以放弃这部分数据包,而不需要再次递交至高层协议实体。另外,对于第一终端已经在第一传输路径忽略的数据包,那么即使网络侧设备通过第二传输路径进行重传,第一终端也可以放弃这部分数据包。
该实施方式中,通过将满足预设条件的数据包丢弃,能够使第一终端节省资源传输开销,提高了第一终端的通信性能。
可选的,所述方法还包括:
对所述目标业务的第二数据进行处理之后,再对所述目标业务的第一数据进行处理;所述目标业务的第二数据为所述第一终端在所述第一传输路径接收的数据。
该实施方式中,第一终端先对在第一传输路径接收的数据进行处理,再对在第二传输路径接收的数据进行处理,这样,在目标业务的传输路径发生变更的时候,能够确保第一终端按照目标业务的数据接收顺序依次对目标业务的数据进行处理,从而能够减少数据丢失,避免接收数据的中断。
可选的,所述对所述目标业务的第二数据进行处理,包括:
对所述目标业务的第二数据进行处理并递交至高层协议实体。
可选的,所述对所述目标业务的第二数据进行处理并递交至高层协议实体,包括以下任一项:
将所述第一传输路径的RLC实体进行重建;
通过RLC实体对所述目标业务的第二数据进行处理,并将处理后的所述目标业务的第二数据递交至高层协议实体;
将所述第一传输路径的PDCP实体进行重建;
通过PDCP实体对所述目标业务的第二数据进行处理,并将处理后的所述目标业务的第二数据递交至高层协议实体。
该实施方式中,第一终端可以对第一传输路径的RLC实体进行重建,也 可以不对第一传输路径的RLC实体进行重建,而是将缓存的目标业务的第二数据进行处理后再将完整的RLC服务数据单元(Service Data Unit,SDU)数据递交至高层协议实体。第一终端也可以对第一传输路径的PDCP实体进行重建,也可以不对第一传输路径的PDCP实体进行重建,而是将缓存的目标业务的第二数据进行处理后递交至高层协议实体。
可选的,所述对所述目标业务的第二数据进行处理并递交至高层协议实体,包括以下至少一项:
忽略所述第一终端在所述第一传输路径未接收到的数据;
将所述第一终端缓存的数据进行处理并递交至高层协议实体;
丢弃所述第一终端在所述第一传输路径的第一个丢失的数据包之后的数据包;
对所述第一个丢失的数据包之前的数据包进行处理并递交至高层协议实体。
该实施方式中,第一终端可以忽略第一终端在第一传输路径没有接收到的数据,并将第一终端缓存的数据处理后递交至高层协议实体。例如,第一终端的PDCP接收实体在第一传输路径接收到PDCP PDU-1/3,而没有接收到PDCP PDU-2,则PDCP接收实体可忽略PDCP PDU-2,将PDCP PDU-1/3处理后,例如,将PDCP PDU-1/3解密或解压缩或移除PDCP PDU包头后再递交至PDCP接收实体的高层协议实体。
该实施方式中,第一终端可以对在第一传输路径的第一个丢失的数据包之前的数据包进行处理并递交至高层协议实体,并第一个丢失的数据包开始,丢弃该数据包之后的所有数据包。例如,第一终端的PDCP接收实体在第一传输路径接收到PDCP PDU-1/3/5,PDCP PDU-2为第一个丢失的数据包,则PDCP接收实体将PDCP PDU-1处理后,例如,将PDCP PDU-1解密或解压缩或移除PDCP PDU包头后再递交至PDCP接收实体的高层协议实体,而将PDCP PDU-3/5丢弃。
需要说明的是,图2的方法实施例中的相关实施方式和相关说明均可以适用于本申请实施例,并达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例提供的数据传输方法,执行主体可以为数据传输装置,或 者,该数据传输装置中的用于执行数据传输方法的控制模块。本申请实施例中以数据传输装置执行数据传输方法为例,说明本申请实施例提供的数据传输装置。
图5是本申请实施例提供的一种数据传输装置的结构图,如图5所示,数据传输装置500,应用于第一终端,数据传输装置500包括:
第一接收模块501,用于接收网络侧设备发送的第一消息,所述第一消息用于指示目标业务的传输路径从第一传输路径变更至第二传输路径;
发送模块502,用于向所述网络侧设备发送第二消息,所述第二消息用于指示所述第一终端在所述第一传输路径对所述目标业务的接收状态。
可选的,数据传输装置500还包括:
第二接收模块,用于在所述第二传输路径接收所述网络侧设备发送的所述目标业务的第一数据。
可选的,所述目标业务的第一数据包括以下任一项:
所述第一终端在所述第一传输路径的第一个丢失的数据包,以及所述第一个丢失的数据包之后的数据包;
所述第一终端在所述第一传输路径丢失的数据包;
N个终端在所述第一传输路径的第一个丢失的数据包中最早的数据包,以及所述最早的数据包之后的数据包,所述N个终端包括所述第一终端;
所述N个终端在所述第一传输路径的第一个丢失的数据包中最晚的数据包,以及所述最晚的数据包之后的数据包。
可选的,数据传输装置500还包括:
第三接收模块,用于接收所述网络侧设备发送的第三消息,所述第三消息用于指示所述目标业务的第一数据在所述第一传输路径所对应的数据包编号信息。
可选的,数据传输装置500还包括:
丢弃模块,用于将所述目标业务的第一数据中满足预设条件的数据包丢弃。
可选的,所述满足预设条件的数据包包括以下任一项:
所述数据包为在所述第一传输路径递交至高层协议实体的数据包;
所述数据包为在所述第一传输路径被忽略接收的数据包。
可选的,数据传输装置500还包括:
处理模块,用于对所述目标业务的第二数据进行处理之后,再对所述目标业务的第一数据进行处理;所述目标业务的第二数据为所述第一终端在所述第一传输路径接收的数据。
可选的,所述处理模块具体用于:
对所述目标业务的第二数据进行处理并递交至高层协议实体。
可选的,所述处理模块具体用于以下任一项:
将所述第一传输路径的无线链路控制RLC实体进行重建;
通过RLC实体对所述目标业务的第二数据进行处理,并将处理后的所述目标业务的第二数据递交至高层协议实体;
将所述第一传输路径的分组数据汇聚协议PDCP实体进行重建;
通过PDCP实体对所述目标业务的第二数据进行处理,并将处理后的所述目标业务的第二数据递交至高层协议实体。
可选的,所述处理模块具体用于以下至少一项:
忽略所述第一终端在所述第一传输路径未接收到的数据;
将所述第一终端缓存的数据进行处理并递交至高层协议实体;
丢弃所述第一终端在所述第一传输路径的第一个丢失的数据包之后的数据包;
对所述第一个丢失的数据包之前的数据包进行处理并递交至高层协议实体。
可选的,数据传输装置500还包括:
调整模块,用于根据所述第二消息,调整所述第二传输路径的数据接收窗口的变量。
可选的,所述调整模块具体用于:
将所述第二传输路径当前最后一个递交至高层协议实体的数据包的编号调整为第一编号,所述第一编号为所述第一终端在所述第一传输路径,第一个丢失的数据包的前一个数据包的编号或最后一个递交至高层协议实体的数据包的编号;或者,
将所述第二传输路径当前第一个待接收的数据包的编号调整为第二编号,所述第二编号为所述第一终端在所述第一传输路径,第一个丢失的数据包的编号。
可选的,所述第二消息包括所述目标业务的数据包编号信息,所述目标业务的数据包编号信息用于指示所述第一终端在所述第一传输路径对所述目标业务的接收状态。
可选的,所述目标业务的数据包编号信息包括以下任一项:
所述第一终端在所述第一传输路径的第一个丢失的数据包的编号信息;
所述第一终端在所述第一传输路径的第一个丢失的数据包的前一个数据包的编号信息;
所述第一终端在所述第一传输路径的第一个丢失的数据包的后一个数据包的编号信息;
所述第一终端在所述第一传输路径丢失的数据包的编号信息;
所述第一终端在所述第一传输路径接收的数据包的编号信息。
可选的,所述第一传输路径和所述第二传输路径分别为不同无线承载的传输路径;或者,
所述第一传输路径和所述第二传输路径为同一无线承载的不同传输路径。
可选的,所述第一传输路径为单播传输方式的传输路径,所述第二传输路径为多播传输方式的传输路径;或者,
所述第一传输路径为多播传输方式的传输路径,所述第二传输路径为单播传输方式的传输路径。
可选的,所述第一消息还包括所述目标业务的指示信息,所述指示信息包括会话标识、数据流标识和多播业务标识中的至少一项。
可选的,所述第二消息通过所述第一传输路径和所述第二传输路径中的至少一个传输路径传输。
可选的,所述第二消息还包括所述第一传输路径的指示信息。
可选的,所述第一传输路径的指示信息包括无线承载标识、数据流标识、会话标识、逻辑信道标识、小区组标识和多播业务标识中的至少一项。
本申请实施例中的数据传输装置可以是装置,也可以是终端中的部件、 集成电路、或芯片。该装置可以是移动终端,也可以为非移动终端。示例性的,移动终端可以包括但不限于上述所列举的终端11的类型,非移动终端可以为服务器、网络附属存储器(Network Attached Storage,NAS)、个人计算机(personal computer,PC)、电视机(television,TV)、柜员机或者自助机等,本申请实施例不作具体限定。
本申请实施例中的数据传输装置可以为具有操作系统的装置。该操作系统可以为安卓(Android)操作系统,可以为iOS操作系统,还可以为其他可能的操作系统,本申请实施例不作具体限定。
本申请实施例提供的数据传输装置能够实现图4的方法实施例实现的各个过程,并达到相同的技术效果,为避免重复,这里不再赘述。
可选的,如图6所示,本申请实施例还提供一种通信设备600,包括处理器601,存储器602,存储在存储器602上并可在所述处理器601上运行的程序或指令,例如,该通信设备600为终端时,该程序或指令被处理器601执行时实现上述数据传输方法实施例的各个过程,且能达到相同的技术效果。该通信设备600为网络侧设备时,该程序或指令被处理器601执行时实现上述数据传输方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供了一种网络侧设备。如图7所示,该网络侧设备700包括:天线71、射频装置72、基带装置73。天线71与射频装置72连接。在上行方向上,射频装置72通过天线71接收信息,将接收的信息发送给基带装置73进行处理。在下行方向上,基带装置73对要发送的信息进行处理,并发送给射频装置72,射频装置72对收到的信息进行处理后经过天线71发送出去。
上述频带处理装置可以位于基带装置73中,以上实施例中网络侧设备执行的方法可以在基带装置73中实现,该基带装置73包括处理器74和存储器75。
基带装置73例如可以包括至少一个基带板,该基带板上设置有多个芯片,如图7所示,其中一个芯片例如为处理器74,与存储器75连接,以调用存储器75中的程序,执行以上方法实施例中所示的网络设备操作。
该基带装置73还可以包括网络接口76,用于与射频装置72交互信息,该接口例如为通用公共无线接口(common public radio interface,CPRI)。
具体地,本发明实施例的网络侧设备还包括:存储在存储器75上并可在处理器74上运行的指令或程序,处理器74调用存储器75中的指令或程序执行图3所示各模块执行的方法,并达到相同的技术效果,为避免重复,故不在此赘述。
图8为实现本申请实施例的一种第一终端的硬件结构示意图。
该第一终端1000包括但不限于:射频单元1001、网络模块1002、音频输出单元1003、输入单元1004、传感器1005、显示单元1006、用户输入单元1007、接口单元1008、存储器1009、以及处理器1010等部件。
本领域技术人员可以理解,第一终端1000还可以包括给各个部件供电的电源(比如电池),电源可以通过电源管理系统与处理器1010逻辑相连,从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图8中示出的终端结构并不构成对第一终端的限定,第一终端可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置,在此不再赘述。
应理解的是,本申请实施例中,输入单元1004可以包括图形处理器(Graphics Processing Unit,GPU)10041和麦克风10042,图形处理器10041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元1006可包括显示面板10061,可以采用液晶显示器、有机发光二极管等形式来配置显示面板10061。用户输入单元1007包括触控面板10071以及其他输入设备10072。触控面板10071,也称为触摸屏。触控面板10071可包括触摸检测装置和触摸控制器两个部分。其他输入设备10072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆,在此不再赘述。
本申请实施例中,射频单元1001将来自网络侧设备的下行数据接收后,给处理器1010处理;另外,将上行的数据发送给网络侧设备。通常,射频单元1001包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器1009可用于存储软件程序或指令以及各种数据。存储器1009可 主要包括存储程序或指令区和存储数据区,其中,存储程序或指令区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外,存储器1009可以包括高速随机存取存储器,还可以包括非易失性存储器,其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。
处理器1010可包括一个或多个处理单元;可选的,处理器1010可集成应用处理器和调制解调处理器,其中,应用处理器主要处理操作系统、用户界面和应用程序或指令等,调制解调处理器主要处理无线通信,如基带处理器。可以理解的是,上述调制解调处理器也可以不集成到处理器1010中。
其中,射频单元1001,用于:
接收网络侧设备发送的第一消息,所述第一消息用于指示目标业务的传输路径从第一传输路径变更至第二传输路径;
向所述网络侧设备发送第二消息,所述第二消息用于指示所述第一终端在所述第一传输路径对所述目标业务的接收状态。
可选的,射频单元1001,还用于:
在所述第二传输路径接收所述网络侧设备发送的所述目标业务的第一数据。
可选的,所述目标业务的第一数据包括以下任一项:
所述第一终端在所述第一传输路径的第一个丢失的数据包,以及所述第一个丢失的数据包之后的数据包;
所述第一终端在所述第一传输路径丢失的数据包;
N个终端在所述第一传输路径的第一个丢失的数据包中最早的数据包,以及所述最早的数据包之后的数据包,所述N个终端包括所述第一终端;
所述N个终端在所述第一传输路径的第一个丢失的数据包中最晚的数据包,以及所述最晚的数据包之后的数据包。
可选的,射频单元1001,还用于:
接收所述网络侧设备发送的第三消息,所述第三消息用于指示所述目标业务的第一数据在所述第一传输路径所对应的数据包编号信息。
可选的,处理器1010,用于:
将所述目标业务的第一数据中满足预设条件的数据包丢弃。
可选的,所述满足预设条件的数据包包括以下任一项:
所述数据包为在所述第一传输路径递交至高层协议实体的数据包;
所述数据包为在所述第一传输路径被忽略接收的数据包。
可选的,处理器1010或射频单元1001,还用于:
对所述目标业务的第二数据进行处理之后,再对所述目标业务的第一数据进行处理;所述目标业务的第二数据为所述第一终端在所述第一传输路径接收的数据。
可选的,处理器1010或射频单元1001,还用于:
对所述目标业务的第二数据进行处理并递交至高层协议实体。
可选的,处理器1010或射频单元1001,还用于以下任一项:
将所述第一传输路径的无线链路控制RLC实体进行重建;
通过RLC实体对所述目标业务的第二数据进行处理,并将处理后的所述目标业务的第二数据递交至高层协议实体;
将所述第一传输路径的分组数据汇聚协议PDCP实体进行重建;
通过PDCP实体对所述目标业务的第二数据进行处理,并将处理后的所述目标业务的第二数据递交至高层协议实体。
可选的,处理器1010或射频单元1001,还用于以下至少一项:
忽略所述第一终端在所述第一传输路径未接收到的数据;
将所述第一终端缓存的数据进行处理并递交至高层协议实体;
丢弃所述第一终端在所述第一传输路径的第一个丢失的数据包之后的数据包;
对所述第一个丢失的数据包之前的数据包进行处理并递交至高层协议实体。
可选的,处理器1010,还用于:
根据所述第二消息,调整所述第二传输路径的数据接收窗口的变量。
可选的,处理器1010,还用于:
将所述第二传输路径当前最后一个递交至高层协议实体的数据包的编号调整为第一编号,所述第一编号为所述第一终端在所述第一传输路径,第一个丢失的数据包的前一个数据包的编号或最后一个递交至高层协议实体的数据包的编号;或者,
将所述第二传输路径当前第一个待接收的数据包的编号调整为第二编号,所述第二编号为所述第一终端在所述第一传输路径,第一个丢失的数据包的编号。
可选的,所述第二消息包括所述目标业务的数据包编号信息,所述目标业务的数据包编号信息用于指示所述第一终端在所述第一传输路径对所述目标业务的接收状态。
可选的,所述目标业务的数据包编号信息包括以下任一项:
所述第一终端在所述第一传输路径的第一个丢失的数据包的编号信息;
所述第一终端在所述第一传输路径的第一个丢失的数据包的前一个数据包的编号信息;
所述第一终端在所述第一传输路径的第一个丢失的数据包的后一个数据包的编号信息;
所述第一终端在所述第一传输路径丢失的数据包的编号信息;
所述第一终端在所述第一传输路径接收的数据包的编号信息。
可选的,所述第一传输路径和所述第二传输路径分别为不同无线承载的传输路径;或者,
所述第一传输路径和所述第二传输路径为同一无线承载的不同传输路径。
可选的,所述第一传输路径为单播传输方式的传输路径,所述第二传输路径为多播传输方式的传输路径;或者,
所述第一传输路径为多播传输方式的传输路径,所述第二传输路径为单播传输方式的传输路径。
可选的,所述第一消息还包括所述目标业务的指示信息,所述指示信息包括会话标识、数据流标识和多播业务标识中的至少一项。
可选的,所述第二消息通过所述第一传输路径和所述第二传输路径中的 至少一个传输路径传输。
可选的,所述第二消息还包括所述第一传输路径的指示信息。
可选的,所述第一传输路径的指示信息包括无线承载标识、数据流标识、会话标识、逻辑信道标识、小区组标识和多播业务标识中的至少一项。
在本申请实施例中,在数据的传输路径发生变更的情况下,通过网络侧设备接收终端上报的源接收路径的数据接收状态,能够使网络侧设备根据终端的数据接收状态来进行数据的重传,从而能够有效地避免数据重复传输。
本申请实施例还提供一种可读存储介质,所述可读存储介质上存储有程序或指令,该程序或指令被处理器执行时实现上述数据传输方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
其中,所述处理器为上述实施例中所述的第一终端或网络侧设备中的处理器。所述可读存储介质,包括计算机可读存储介质,如计算机只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等。
本申请实施例另提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现上述数据传输方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外,需要指出的是,本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能,还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能,例如,可以按不同于所描述的次序来执行所描述的方法,并且还可以添加、省 去、或组合各种步骤。另外,参照某些示例所描述的特征可在其他示例中被组合。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本公开的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的实施例中,应该理解到,所揭露的装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本公开各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光 盘)中,包括若干指令用以使得一台终端(可以是手机,计算机,服务器,空调器,或者网络设备等)执行本申请各个实施例所述的方法。
可以理解的是,本公开实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现,模块、单元、子单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits,ASIC)、数字信号处理器(Digital Signal Processor,DSP)、数字信号处理设备(DSP Device,DSPD)、可编程逻辑设备(Programmable Logic Device,PLD)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本公开所述功能的其它电子单元或其组合中。
对于软件实现,可通过执行本公开实施例所述功能的模块(例如过程、函数等)来实现本公开实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
上面结合附图对本申请的实施例进行了描述,但是本申请并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本申请的启示下,在不脱离本申请宗旨和权利要求所保护的范围情况下,还可做出很多形式,均属于本申请的保护之内。

Claims (40)

  1. 一种数据传输方法,应用于网络侧设备,包括:
    发送第一消息,所述第一消息用于指示目标业务的传输路径从第一传输路径变更至第二传输路径;
    接收终端发送的第二消息,所述第二消息用于指示所述终端在所述第一传输路径对所述目标业务的接收状态;
    根据所述第二消息,在所述第二传输路径发送所述目标业务的第一数据。
  2. 根据权利要求1所述的方法,其中,所述目标业务的第一数据包括:
    所述终端在所述第一传输路径的第一个丢失的数据包,以及所述第一个丢失的数据包之后的数据包;或者,
    所述终端在所述第一传输路径丢失的数据包。
  3. 根据权利要求2所述的方法,其中,若所述网络侧设备接收到N个终端发送的所述第二消息,且所述N个终端在所述第一传输路径的第一个丢失的数据包不同,所述N为大于1的整数,则所述目标业务的第一数据包括:
    所述N个终端在所述第一传输路径的第一个丢失的数据包中最早的数据包,以及所述最早的数据包之后的数据包;或者,
    所述N个终端在所述第一传输路径的第一个丢失的数据包中最晚的数据包,以及所述最晚的数据包之后的数据包。
  4. 根据权利要求1所述的方法,还包括:
    发送第三消息,所述第三消息用于指示所述目标业务的第一数据在所述第一传输路径所对应的数据包编号信息。
  5. 根据权利要求1至4中任一项所述的方法,其中,所述第二消息包括所述目标业务的数据包编号信息,所述目标业务的数据包编号信息用于指示所述终端在所述第一传输路径对所述目标业务的接收状态。
  6. 根据权利要求5所述的方法,其中,所述目标业务的数据包编号信息包括以下任一项:
    所述终端在所述第一传输路径的第一个丢失的数据包的编号信息;
    所述终端在所述第一传输路径的第一个丢失的数据包的前一个数据包的 编号信息;
    所述终端在所述第一传输路径的第一个丢失的数据包的后一个数据包的编号信息;
    所述终端在所述第一传输路径丢失的数据包的编号信息;
    所述终端在所述第一传输路径接收的数据包的编号信息。
  7. 根据权利要求1所述的方法,其中,所述第一传输路径和所述第二传输路径分别为不同无线承载的传输路径;或者,
    所述第一传输路径和所述第二传输路径为同一无线承载的不同传输路径。
  8. 根据权利要求1所述的方法,其中,所述第一传输路径为单播传输方式的传输路径,所述第二传输路径为多播传输方式的传输路径;或者,
    所述第一传输路径为多播传输方式的传输路径,所述第二传输路径为单播传输方式的传输路径。
  9. 根据权利要求1所述的方法,其中,所述第二消息通过所述第一传输路径和所述第二传输路径中的至少一个传输路径传输。
  10. 一种数据传输装置,应用于网络侧设备,包括:
    第一发送模块,用于发送第一消息,所述第一消息用于指示目标业务的传输路径从第一传输路径变更至第二传输路径;
    接收模块,用于接收终端发送的第二消息,所述第二消息用于指示所述终端在所述第一传输路径对所述目标业务的接收状态;
    第二发送模块,用于根据所述第二消息,在所述第二传输路径发送所述目标业务的第一数据。
  11. 根据权利要求10所述的装置,其中,所述目标业务的第一数据包括:
    所述终端在所述第一传输路径的第一个丢失的数据包,以及所述第一个丢失的数据包之后的数据包;或者,
    所述终端在所述第一传输路径丢失的数据包。
  12. 根据权利要求11所述的方法,其中,若所述网络侧设备接收到N个终端发送的所述第二消息,且所述N个终端在所述第一传输路径的第一个丢失的数据包不同,所述N为大于1的整数,则所述目标业务的第一数据包括:
    所述N个终端在所述第一传输路径的第一个丢失的数据包中最早的数据 包,以及所述最早的数据包之后的数据包;或者,
    所述N个终端在所述第一传输路径的第一个丢失的数据包中最晚的数据包,以及所述最晚的数据包之后的数据包。
  13. 根据权利要求10所述的装置,还包括:
    第三发送模块,用于发送第三消息,所述第三消息用于指示所述目标业务的第一数据在所述第一传输路径所对应的数据包编号信息。
  14. 一种数据传输方法,应用于第一终端,包括:
    接收网络侧设备发送的第一消息,所述第一消息用于指示目标业务的传输路径从第一传输路径变更至第二传输路径;
    向所述网络侧设备发送第二消息,所述第二消息用于指示所述第一终端在所述第一传输路径对所述目标业务的接收状态。
  15. 根据权利要求14所述的方法,还包括:
    在所述第二传输路径接收所述网络侧设备发送的所述目标业务的第一数据。
  16. 根据权利要求15所述的方法,其中,所述目标业务的第一数据包括以下任一项:
    所述第一终端在所述第一传输路径的第一个丢失的数据包,以及所述第一个丢失的数据包之后的数据包;
    所述第一终端在所述第一传输路径丢失的数据包;
    N个终端在所述第一传输路径的第一个丢失的数据包中最早的数据包,以及所述最早的数据包之后的数据包,所述N个终端包括所述第一终端;
    所述N个终端在所述第一传输路径的第一个丢失的数据包中最晚的数据包,以及所述最晚的数据包之后的数据包。
  17. 根据权利要求15所述的方法,还包括:
    将所述目标业务的第一数据中满足预设条件的数据包丢弃。
  18. 根据权利要求17所述的方法,其中,所述满足预设条件的数据包包括以下任一项:
    所述数据包为在所述第一传输路径递交至高层协议实体的数据包;
    所述数据包为在所述第一传输路径被忽略接收的数据包。
  19. 根据权利要求15所述的方法,还包括:
    对所述目标业务的第二数据进行处理之后,再对所述目标业务的第一数据进行处理;所述目标业务的第二数据为所述第一终端在所述第一传输路径接收的数据。
  20. 根据权利要求19所述的方法,所述对所述目标业务的第二数据进行处理,包括:
    对所述目标业务的第二数据进行处理并递交至高层协议实体。
  21. 根据权利要求20所述的方法,所述对所述目标业务的第二数据进行处理并递交至高层协议实体,包括以下任一项:
    将所述第一传输路径的无线链路控制RLC实体进行重建;
    通过RLC实体对所述目标业务的第二数据进行处理,并将处理后的所述目标业务的第二数据递交至高层协议实体;
    将所述第一传输路径的分组数据汇聚协议PDCP实体进行重建;
    通过PDCP实体对所述目标业务的第二数据进行处理,并将处理后的所述目标业务的第二数据递交至高层协议实体。
  22. 根据权利要求20所述的方法,其中,所述对所述目标业务的第二数据进行处理并递交至高层协议实体,包括以下至少一项:
    忽略所述第一终端在所述第一传输路径未接收到的数据;
    将所述第一终端缓存的数据进行处理并递交至高层协议实体;
    丢弃所述第一终端在所述第一传输路径的第一个丢失的数据包之后的数据包;
    对所述第一个丢失的数据包之前的数据包进行处理并递交至高层协议实体。
  23. 根据权利要求14所述的方法,还包括:
    根据所述第二消息,调整所述第二传输路径的数据接收窗口的变量。
  24. 根据权利要求23所述的方法,其中,所述根据所述第二消息,调整所述第二传输路径的数据接收窗口的变量,包括:
    将所述第二传输路径当前最后一个递交至高层协议实体的数据包的编号调整为第一编号,所述第一编号为所述第一终端在所述第一传输路径,第一 个丢失的数据包的前一个数据包的编号或最后一个递交至高层协议实体的数据包的编号;或者,
    将所述第二传输路径当前第一个待接收的数据包的编号调整为第二编号,所述第二编号为所述第一终端在所述第一传输路径,第一个丢失的数据包的编号。
  25. 根据权利要求14至16中任一项所述的方法,其中,所述第二消息包括所述目标业务的数据包编号信息,所述目标业务的数据包编号信息用于指示所述第一终端在所述第一传输路径对所述目标业务的接收状态。
  26. 根据权利要求25所述的方法,其中,所述目标业务的数据包编号信息包括以下任一项:
    所述第一终端在所述第一传输路径的第一个丢失的数据包的编号信息;
    所述第一终端在所述第一传输路径的第一个丢失的数据包的前一个数据包的编号信息;
    所述第一终端在所述第一传输路径的第一个丢失的数据包的后一个数据包的编号信息;
    所述第一终端在所述第一传输路径丢失的数据包的编号信息;
    所述第一终端在所述第一传输路径接收的数据包的编号信息。
  27. 根据权利要求14所述的方法,其中,所述第一传输路径和所述第二传输路径分别为不同无线承载的传输路径;或者,
    所述第一传输路径和所述第二传输路径为同一无线承载的不同传输路径。
  28. 根据权利要求14所述的方法,其中,所述第一传输路径为单播传输方式的传输路径,所述第二传输路径为多播传输方式的传输路径;或者,
    所述第一传输路径为多播传输方式的传输路径,所述第二传输路径为单播传输方式的传输路径。
  29. 一种数据传输装置,应用于第一终端,包括:
    第一接收模块,用于接收网络侧设备发送的第一消息,所述第一消息用于指示目标业务的传输路径从第一传输路径变更至第二传输路径;
    发送模块,用于向所述网络侧设备发送第二消息,所述第二消息用于指示所述第一终端在所述第一传输路径对所述目标业务的接收状态。
  30. 根据权利要求29所述的装置,还包括:
    第二接收模块,用于在所述第二传输路径接收所述网络侧设备发送的所述目标业务的第一数据。
  31. 根据权利要求30所述的装置,还包括:
    丢弃模块,用于将所述目标业务的第一数据中满足预设条件的数据包丢弃。
  32. 根据权利要求31所述的装置,其中,所述满足预设条件的数据包包括以下任一项:
    所述数据包为在所述第一传输路径递交至高层协议实体的数据包;
    所述数据包为在所述第一传输路径被忽略接收的数据包。
  33. 根据权利要求29所述的装置,还包括:
    调整模块,用于根据所述第二消息,调整所述第二传输路径的数据接收窗口的变量。
  34. 根据权利要求33所述的装置,其中,所述调整模块具体用于:
    将所述第二传输路径当前最后一个递交至高层协议实体的数据包的编号调整为第一编号,所述第一编号为所述第一终端在所述第一传输路径,第一个丢失的数据包的前一个数据包的编号或最后一个递交至高层协议实体的数据包的编号;或者,
    将所述第二传输路径当前第一个待接收的数据包的编号调整为第二编号,所述第二编号为所述第一终端在所述第一传输路径,第一个丢失的数据包的编号。
  35. 一种网络侧设备,包括处理器,存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求1至9中任一项所述的数据传输方法的步骤。
  36. 一种第一终端,包括处理器,存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求14至28中任一项所述的数据传输方法的步骤。
  37. 一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被所述处理器执行时实现如权利要求1至9中任一项所述的数据传输 方法的步骤,或者实现如权利要求14至28中任一项所述的数据传输方法的步骤。
  38. 一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行网络侧设备程序或指令,实现如权利要求1至9中任一项所述的数据传输方法,或者实现如权利要求14至28中任一项所述的数据传输方法。
  39. 一种计算机软件产品,所述计算机软件产品被存储在非易失的存储介质中,所述软件产品被配置成被至少一个处理器执行以实现如权利要求1至9中任一项所述的数据传输方法的步骤,或者实现如权利要求14至28中任一项所述的数据传输方法的步骤。
  40. 一种通信设备,所述通信设备被配置成用于执行如权利要求1至9中任一项所述的数据传输方法,或者执行如权利要求14至28中任一项所述的数据传输方法。
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