WO2018192552A1 - 重复传输的方法及装置 - Google Patents

重复传输的方法及装置 Download PDF

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Publication number
WO2018192552A1
WO2018192552A1 PCT/CN2018/083760 CN2018083760W WO2018192552A1 WO 2018192552 A1 WO2018192552 A1 WO 2018192552A1 CN 2018083760 W CN2018083760 W CN 2018083760W WO 2018192552 A1 WO2018192552 A1 WO 2018192552A1
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WIPO (PCT)
Prior art keywords
terminal device
repeated transmission
data
signaling
ran
Prior art date
Application number
PCT/CN2018/083760
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English (en)
French (fr)
Inventor
韩锋
晋英豪
李宏
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP18787488.8A priority Critical patent/EP3606253B1/en
Publication of WO2018192552A1 publication Critical patent/WO2018192552A1/zh
Priority to US16/657,247 priority patent/US11664931B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method and apparatus for repeated transmission.
  • 5G fifth generation wireless communication technology
  • 5G will support diverse application needs, including support for higher speed experiences and greater bandwidth access, lower latency and highly reliable information interaction, and the connection of larger and lower cost machine-like communication devices. Entry and management, etc.
  • 5G will support a variety of vertical industry applications for vehicle networking, emergency communications, and industrial Internet.
  • Ultra-Reliable and Low Latency Communications is an important type of communication in 5G.
  • URLLC is a communication service that requires high latency and reliability, such as applications such as driverless or telemedicine.
  • the delay requirement of the user plane for the user plane needs to reach 0.5ms for uplink/downlink transmission; for the transmission with 32 bytes length, the reliability needs to reach 1-10-5 when the user plane delay is 1ms.
  • How to effectively support the transmission of URLLC service data in the upper layer (such as media access control layer, radio link control layer, packet data convergence protocol layer, etc.), there is no suitable solution at present.
  • the embodiment of the present application provides a method for repeated transmission to improve the robustness of data transmission of a terminal device.
  • the embodiment of the present application provides a method for repeating transmission, including: receiving, by a terminal device, retransmission configuration information sent by an access network RAN device, where the repetitive transmission configuration information includes configuring a mode of repeated transmission of the terminal device and/or Or repeatedly transmitting the content; the terminal device performs repeated transmission according to the repeated transmission configuration information. Therefore, according to the repeated transmission method of the embodiment of the present application, the terminal device performs repeated transmission according to the configuration of the repeated transmission sent by the RAN device, thereby improving the robustness of the data transmission of the terminal device.
  • the terminal device receives the repeated transmission configuration information sent by the RAN device by using at least one of the following configuration signaling: radio resource control configuration signaling, packet data convergence protocol configuration signaling, and media Access control configuration signaling.
  • the repeated transmission configuration method of multiple signaling realizes the flexibility of repeated transmission configuration, and can realize repeated transmission of data of different protocol layers.
  • the mode of configuring the repeated transmission of the terminal device is used to indicate whether the terminal device performs repeated transmission or performs repeated transmission on at least two links. Therefore, the embodiment of the present application implements multiple modes of repeated transmission configurations.
  • the content of the repetitive transmission of the configuration terminal device is used to indicate data radio bearer data and/or signaling data that the terminal device is to perform repeated transmission. Therefore, the embodiment of the present application implements a repetitive transmission configuration of multiple types of data.
  • the indicating that the terminal device performs repeated transmission on the at least two links further comprising: indicating that the terminal device performs repeated transmission on the specified number of at least two links; or indicating the terminal device Repeated transmissions are performed on the specified at least two links.
  • the at least two links correspond to the RAN device by the terminal device by using at least one of: at least two logical channels, at least two cells, and at least two carriers At least two physical layer parameters and at least two antenna ports. Therefore, the embodiment of the present application implements a repeated transmission configuration of a terminal device in multiple communication scenarios.
  • the signaling data includes at least one of the following: radio resource control signaling data, a packet data convergence protocol layer control message, and a medium access control layer control message. Therefore, the embodiment of the present application implements a repeated transmission configuration of multiple signaling data.
  • the packet data convergence protocol configuration signaling includes a protocol data unit type and a repeated transmission indication, where the protocol data unit type is used to indicate that the packet data convergence protocol configuration signaling is used to configure the terminal device. Repeated transmission; the repeated transmission indication is used to indicate whether to repeatedly transmit data radio bearer data or signaling radio bearer data of the packet data convergence protocol layer corresponding to the packet data convergence layer configuration signaling. Therefore, the embodiment of the present application implements a repetitive transmission configuration of data radio bearer data or signaling radio bearer data of a packet data convergence protocol layer by using a packet data convergence protocol configuration signaling.
  • the medium access control configuration signaling includes a media access control layer control element, where the media access control layer control element includes a media access control sub-header, a logical channel identifier, or a logical channel group identifier. And repeating the transmission indication; the medium access control subheader is configured to indicate that the medium access control layer control element is configured to configure repeated transmission of the terminal device; the repeated transmission indication is used to indicate whether to repeatedly transmit the logical channel identifier or logic
  • the channel group identifies the logical channel data or logical channel group data corresponding to it. Therefore, the embodiment of the present application implements a repetitive transmission configuration of logical channel data or logical channel group data of the medium access control layer by using medium access control configuration signaling.
  • the embodiment of the present application provides a method for repetitive transmission, including: the access network RAN device sends retransmission configuration information to the terminal device, where the retransmission configuration information includes configuring a mode of repeated transmission of the terminal device and/or Or repeatedly transmitting the content; the RAN device receives the repeated transmission of the terminal device. Therefore, according to the repeated transmission method of the embodiment of the present application, the RAN device configures the terminal device to perform repeated transmission, thereby improving the robustness of data transmission of the terminal device.
  • the RAN device sends the repeated transmission configuration information to the terminal device by using at least one of the following configuration signaling: radio resource control configuration signaling, packet data convergence protocol layer configuration signaling, and The media access control layer configures signaling.
  • the repeated transmission configuration method of multiple signaling realizes the flexibility of repeated transmission configuration, and can realize repeated transmission of data of different protocol layers.
  • the mode of configuring the repeated transmission of the terminal device is used to indicate whether the terminal device performs repeated transmission or performs repeated transmission on at least two links. Therefore, the embodiment of the present application implements multiple modes of repeated transmission configurations.
  • the content of the repetitive transmission of the configuration terminal device is used to indicate data radio bearer data and/or signaling data that the terminal device is to perform repeated transmission. Therefore, the embodiment of the present application implements a repetitive transmission configuration of multiple types of data.
  • the indicating that the terminal device performs repeated transmission on the at least two links further comprising: indicating that the terminal device performs repeated transmission on the specified number of at least two links; or indicating the terminal device Repeated transmissions are performed on the specified at least two links.
  • the at least two links correspond to the RAN device by the terminal device by using at least one of: at least two logical channels, at least two cells, and at least two carriers At least two physical layer parameters and at least two antenna ports. Therefore, the embodiment of the present application implements a repeated transmission configuration of a terminal device in multiple communication scenarios.
  • the signaling data includes at least one of the following: radio resource control signaling data, a packet data convergence protocol layer control message, and a medium access control layer control message.
  • the packet data convergence protocol configuration signaling includes a protocol data unit type and a repeated transmission indication, where the protocol data unit type is used to indicate that the packet data convergence protocol configuration signaling is used to configure the terminal device. Repeated transmission; the repeated transmission indication is used to indicate whether to repeatedly transmit data radio bearer data or signaling radio bearer data of the packet data convergence protocol layer corresponding to the packet data convergence layer configuration signaling. Therefore, the embodiment of the present application implements a repetitive transmission configuration of data radio bearer data or signaling radio bearer data of a packet data convergence protocol layer by using a packet data convergence protocol configuration signaling.
  • the medium access control configuration signaling includes a media access control layer control element, where the media access control layer control element includes a media access control sub-header, a logical channel identifier, or a logical channel group identifier. And repeating the transmission indication; the medium access control subheader is configured to indicate that the medium access control layer control element is configured to configure repeated transmission of the terminal device; the repeated transmission indication is used to indicate whether to repeatedly transmit the logical channel identifier or logic
  • the channel group identifies the logical channel data or logical channel group data corresponding to it. Therefore, the embodiment of the present application implements a repetitive transmission configuration of logical channel data or logical channel group data of the medium access control layer by using medium access control configuration signaling.
  • the embodiment of the present application provides a method for repetitive transmission, where the terminal device receives the repeated transmission trigger information sent by the access network RAN device, where the repeated transmission trigger information is used to configure a trigger condition for the terminal device to perform repeated transmission.
  • the terminal device performs repeated transmission according to the repeated transmission trigger information. Therefore, according to the repeated transmission method of the embodiment of the present application, the trigger condition for the terminal device to receive the repeated transmission of the RAN device configuration is implemented, and the robustness of the data transmission of the terminal device when the trigger condition is satisfied is improved.
  • the repeated transmission trigger information includes a threshold of at least one network metric that triggers at least one link of the repeated transmission; the at least one link corresponds to the terminal device by using at least one of the following manners Communicating with the RAN device: a cell, a carrier, a physical layer parameter, and an antenna port; the network metric includes at least one of: reference signal received power, reference signal received quality, packet loss rate, and The number of retransmissions of automatic retransmission requests.
  • the embodiment of the present application implements repeated transmission of terminal devices in various situations.
  • the terminal device repeatedly transmits data of the link when the at least one trigger condition is met, where the repeated transmission includes repeated transmission of data radio bearer data and/or signaling data of the terminal device. . Therefore, the embodiment of the present application implements triggering of repeated transmission of multiple types of data.
  • the embodiment of the present application provides a method for repeating transmission, including: the access network RAN device sends a retransmission triggering information to the terminal device, where the retransmission triggering information is used to configure a trigger condition for the terminal device to perform repeated transmission;
  • the RAN device receives the repeated transmission sent by the terminal device according to the repeated transmission trigger information. Therefore, according to the repeated transmission method of the embodiment of the present application, the trigger condition for the RAN device to configure the terminal device to perform repeated transmission is implemented, and the robustness of the data transmission of the terminal device when the trigger condition is satisfied is improved.
  • the repeated transmission trigger information includes a threshold of at least one network metric that triggers at least one link of the repeated transmission; the at least one link corresponds to the terminal device by using at least one of the following manners Communicating with the RAN device: a cell, a carrier, a physical layer parameter, and an antenna port; the network metric includes at least one of: reference signal received power, reference signal received quality, packet loss rate, and The number of retransmissions of automatic retransmission requests.
  • the embodiment of the present application implements repeated transmission of terminal devices in various situations.
  • the RAN device transmits the repeated transmission when the terminal device satisfies at least one trigger condition, and the repeated transmission includes repeated transmission of data radio bearer data and/or signaling data of the terminal device. Therefore, the embodiment of the present application implements triggering of repeated transmission of multiple types of data.
  • a communication device for performing the method of any one of the first to fourth aspects or the first to fourth aspects, in particular, the communication device may comprise A unit of the method of any one of the possible implementations of the first to fourth aspects or the first to fourth aspects.
  • a communication device comprising a memory and a processor for storing a computer program for calling and running the computer program from the memory, such that the communication device performs the first to fourth aspects or The method of any of the possible implementations of the first to fourth aspects.
  • a computer program product comprising: computer program code, when the computer program code is processed by a communication unit, a processing unit or a transceiver of a communication device (eg, a network device or a network management device) When the device is in operation, the communication device is caused to perform the method of any one of the first to fourth aspects or any of the first to fourth aspects.
  • a computer readable storage medium storing a program causing a user equipment to perform any of the possible implementations of the first to fourth aspects or the first to fourth aspects The method in the way.
  • FIG. 1 is a communication scenario provided by an embodiment of the present application
  • FIG. 3 is a schematic flowchart of another repeated transmission provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of PDCP configuration signaling provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of MAC configuration signaling provided by an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of still another repeated transmission according to an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 10 is another schematic block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of a RAN device according to an embodiment of the present application.
  • FIG. 12 is another schematic block diagram of a RAN device according to an embodiment of the present application.
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • GSM Global System for Mobile communications
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • LTE-A Advanced Long Term Evolution
  • UMTS Universal Mobile Telecommunication System
  • next-generation wireless communication system such as new connection New Radio (NR) system, evolved LTE (evolved LTE, eLTE), etc.
  • the embodiment of the present invention provides a technical solution for performing repeated transmission on at least two links to implement transmission of URLLC service data, improve reliability of URLLC service data transmission, and guarantee low latency.
  • the terminal device When the terminal device is within the coverage of the mobile network, the terminal device can establish a wireless connection with a base station to implement communication between the terminal device and the network.
  • the terminal device may communicate with the base station through at least two carriers, at least two physical layer parameters (Numerology), or at least two antenna ports; wherein each carrier, each A Numerology, or each antenna port, can be referred to as a link.
  • the terminal device may also establish a wireless connection with at least two base stations, for example, the terminal device establishes a connection with at least two base stations simultaneously through a dual connectivity/multiple connection technology, in which case the terminal device and each base station A connection is called a link, and a terminal device has at least two links that communicate with the network.
  • FIG. 1 shows a communication scenario provided by an embodiment of the present invention, wherein in FIG. 1(a), the terminal device 110 communicates with the RAN device 101 via a wireless connection 121, where the RAN device may be an access point in the WLAN (ACCESS) POINT, AP), Base Transceiver Station (BTS) in GSM or CDMA, may also be a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolved Node B, eNB or eNodeB) in LTE.
  • the RAN device may be an access point in the WLAN (ACCESS) POINT, AP), Base Transceiver Station (BTS) in GSM or CDMA, may also be a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolved Node B, eNB or eNodeB) in LTE.
  • ACCESS ACCESS
  • AP Base Transceiver Station
  • NodeB NodeB
  • eNB
  • a relay station or an access point, or an in-vehicle device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network may be a 5G base station (eg, Next-Generation Node B (referred to as gNB for short) ) or Next-Generation Radio (NR), etc., transmission and reception point (TRAN equipment smission and reception point, TRP), centralized processing unit (Centralized Unit, CU), distributed processing unit (Distributed Unit, DU), etc. .
  • 5G base station eg, Next-Generation Node B (referred to as gNB for short)
  • NR Next-Generation Radio
  • TRP transmission and reception point
  • centralized processing unit Centralized Unit, CU
  • distributed processing unit distributed processing unit
  • DU distributed Unit
  • the RAN device 101 can provide services for a plurality of terminal devices; in addition, the terminal device 110 can also establish a wireless connection with at least two RAN devices for communication at the same time, for example, the terminal device 110 also communicates with the wireless device 122.
  • the RAN device 102 communicates. 1(b) to 1(e) respectively show time-frequency resources used for communication in a dual connectivity/multi-connection scenario, a carrier aggregation scenario, a multi-Numerology scenario, and a multi-antenna scenario, where the x-axis represents time, y The axis represents the frequency.
  • the terminal device 110 uses at least one RAN device (such as the RAN device 101 or the RAN device 102) to use a transmission resource (for example, a frequency domain resource, or a spectrum resource) and at least one RAN.
  • the device is in communication, and the cell may be a cell corresponding to the RAN device (for example, a base station), and the cell may belong to a macro cell, a hyper cell, or a base station corresponding to a small cell.
  • the small cell may include: a metro cell, a micro cell, a pico cell, a femto cell, etc., and these small cells have the characteristics of small coverage and low transmission power, and are applicable. Provide high-speed data transmission services.
  • the terminal device 110 may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, User agent or user device.
  • the terminal device 110 may be a station (STATION, ST) in a Wireless Local Area Networks (WLAN), and may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, and a wireless local loop (Wireless local loop).
  • WLAN Wireless Local Area Networks
  • SIP Session Initiation Protocol
  • the terminal device 110 may also be a wearable device.
  • a wearable device which can also be called a wearable smart device, is a general term for applying wearable technology to intelligently design and wear wearable devices such as glasses, gloves, watches, clothing, and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories.
  • Wearable devices are more than just a hardware device, but they also implement powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-size, non-reliable smartphones for full or partial functions, such as smart watches or smart glasses, and focus on only one type of application, and need to work with other devices such as smartphones. Use, such as various smart bracelets for smart signs monitoring, smart jewelry, etc.
  • At least two RAN devices communicate with terminal device 110 over three cells, namely RAN device 101 and RAN device
  • Each of the links may correspond to one cell, and the cell may be a cell in the master cell group (MCG) managed by the master RAN device 101. It is one of the secondary cell groups (SCGs) managed by the secondary RAN device 102.
  • MCG master cell group
  • SCGs secondary cell groups
  • a terminal device establishes a connection with a plurality of cells managed by at least two RAN devices.
  • One of the at least two RAN devices is referred to as a primary RAN device, and is responsible for transmitting control plane data and user plane data with the terminal device, and the set of cells managed by the primary RAN device is referred to as an MCG;
  • the other RAN devices of the at least two RAN devices except the primary RAN device are referred to as secondary RAN devices, and are mainly used for transmitting user plane data with the terminal device, and the set of cells managed by one secondary RAN device is called SCG.
  • the RAN device is used to describe the master RAN device to which the terminal device communicates.
  • the at least two cells used by the RAN devices 101-102 and the terminal device 110 for communication and the time-frequency resources of each cell are determined by the network configuration or by the master RAN device 101 and the terminal device 110.
  • the time-frequency resources of the three cells shown in Figure 1(b) are different. In an actual network, the time-frequency resources of the three cells may also be the same, depending on the configuration of the system.
  • the RAN device 101 and the terminal device 110 communicate through the first carrier, the second carrier, and the third carrier, that is, there are three different links between the RAN device 101 and the terminal device 110. Each link corresponds to one carrier.
  • a terminal device establishes a connection with at least two cells managed by one RAN device, each cell correspondingly using one carrier.
  • One of the at least two cells having different carriers is called a primary cell (PCell), and is responsible for transmitting control plane data and user plane data with the terminal device; in addition to the master in the at least two cells
  • the other cell outside the cell is called a secondary cell (SCell), and is mainly used for transmitting user plane data with the terminal device.
  • PCell primary cell
  • SCell secondary cell
  • the carrier and the cell have the same meaning and can be used interchangeably.
  • the plurality of carriers/cells used by the RAN device 101 and the terminal device 110 for communication and the bandwidth of each carrier/cell are determined by the network configuration or by the RAN device 101 and the terminal device 110.
  • the RAN device 101 and the terminal device 110 communicate through the first Numerology, the second Numerology, and the third Numerology, that is, there are three different links between the RAN device 101 and the terminal device 110. Each link corresponds to a Numerology.
  • the terminal device 110 communicates using at least one cell managed by at least two Numerology and RAN devices 101.
  • different Numerologies have different subcarrier spacing and Cyclic Prefix (CP) lengths; in addition, different Numerologies may have different Transmission Time Intervals (TTIs).
  • TTIs Transmission Time Intervals
  • the RAN device 101 and the terminal device 110 communicate through the first antenna port, the second antenna port, and the third antenna port, that is, There are three different links between the RAN device 101 and the terminal device 110, and each link corresponds to one antenna port. Different antenna ports have different antenna port identifications or serial numbers.
  • terminal device 110 communicates with at least one cell managed by RAN device 101 using a plurality of antenna ports. It should be understood that the plurality of antenna ports used by the RAN device 101 and the terminal device 110 for communication and the resource configuration of each antenna port are determined by the network configuration or by the RAN device 101 and the terminal device 110.
  • a Packet Data Convergence Protocol (PDCP) layer of the terminal device 110 maps data from the application to The Data Radio Bearer (DRB) forms the DRB data and transmits it to the Radio Link Control (RLC) layer, or transmits the signaling data from the control plane to the RLC layer, and the RLC layer will DRB or signaling.
  • the data is mapped to a logical channel (LC) and transmitted to a Media Access Control (MAC) layer.
  • the MAC layer implements multiplexing of data of one or more LCs and transmits them in units of transport blocks of a certain size.
  • the terminal device 110 repeats by at least two links. transfer data.
  • the repeated transmission is the same data transmission on different links, also commonly referred to as data duplication or packet duplication, such that the RAN device 101 or the RAN device 101-102 can be in at least two chains.
  • the same data transmitted by the terminal device 110 is received on the road.
  • the RAN device 101 or the master RAN device 101 may further perform repeated detection of the received repeated data at the PDCP layer to obtain the required data.
  • FIG. 2 to FIG. 8 are schematic flowcharts of the communication method of the embodiment of the present application, showing detailed communication steps or operations of the method, but the steps or operations are only examples, and the embodiment of the present application may also Other operations or variations of the various operations in FIGS. 2 through 8 are performed. Further, the respective steps in FIGS. 2 to 8 may be performed in a different order from that presented in FIGS. 2 to 8, respectively, and it is possible that not all operations in FIGS. 2 to 8 are to be performed.
  • FIG. 2 is a schematic flowchart diagram of a method for repeating transmission according to an embodiment of the present application.
  • the method 200 is applicable to the communication scenario shown in FIG. 1 and includes the following steps:
  • the RAN device sends the repeated transmission configuration information to the terminal device.
  • the repeated transmission configuration information includes a mode of configuring repeated transmission of the terminal device and/or content of repeated transmission.
  • the mode of configuring the repeated transmission is used to indicate whether the terminal device performs repeated transmission or performs repeated transmission on at least two links.
  • the content of the configuration repeated transmission is used to indicate DRB data and/or signaling data that the terminal device is to perform repeated transmission.
  • the RAN device may determine the repeated transmission configuration of the terminal device according to the load status of the network, the wireless channel quality of the terminal device, and the performance of the URL LC service running in the network.
  • the RAN device can configure the terminal device to perform repeated transmission; in the case where the network is overloaded or the wireless channel quality of the terminal device is high, the RAN device
  • the configurable terminal device does not transmit repeatedly.
  • the RAN device may also obtain configuration information of repeated transmission of the terminal device from other network devices (such as a core network device) to determine a repeated transmission configuration of the terminal device.
  • the RAN device can also configure the terminal device to repeatedly transmit the DRB data and the signaling data according to the respective load conditions of the user plane data and the control plane data in the network, and the delay performance. It should be understood that when the terminal device communicates with at least two RAN devices, the RAN device is a primary RAN device of at least two RAN devices.
  • the repeated transmission configuration information indicates that the terminal device turns on (activates) or turns off (deactivates) the repeated transmission.
  • the RAN device may inform the terminal device to turn on (activate) or turn off (deactivate) the repeated transmission by 1-bit configuration information.
  • the RAN device notifies the terminal device to enable repeated transmission, and the RAN device configures the terminal device to perform repeated transmission on the two links.
  • the repeated transmission configuration information further configures the terminal device to perform repeated transmission on the specified number of at least two links.
  • the RAN device can configure the terminal device to perform repeated transmissions on at least two links it communicates with the RAN device. For example, because the radio channel quality of different links may vary, the RAN device may specify that the terminal device repeats transmission on a portion of the link with high radio channel quality in at least two links.
  • the RAN device may inform the terminal device to perform repeated transmission on at least two links through multi-bit configuration information. For example, the RAN device can inform the terminal device that the repeat transmission can be performed on up to four links through 2-bit configuration information.
  • the RAN device may further indicate that the terminal device performs repeated transmission on the specified at least two links by means of a link identifier or a link sequence number.
  • the RAN device may configure the terminal device to perform repeated transmission on the two links corresponding to the first link identifier and the second link identifier.
  • the repeated transmission configuration information configures the terminal device to repeatedly transmit data of the at least one DRB.
  • the RAN device may send the identifier of the at least one DRB to be repeatedly transmitted by the terminal device to the terminal device through the repeated transmission configuration information.
  • the repeated transmission configuration information may further configure data of at least one signaling of the terminal device for repeated transmission.
  • the signaling may be Radio Resource Control (RRC) signaling, or may be a PDCP control message (eg, PDCP status report, header compression control information, etc.), or may be an RLC status report, and a MAC. Control messages (such as MAC Control Elements (CE)) and so on.
  • RRC Radio Resource Control
  • CE MAC Control Elements
  • the terminal device performs repeated transmission according to the repeated transmission configuration.
  • the terminal device configures the manner of repeated transmission and/or the content of the repeated transmission according to the repeated transmission configuration information acquired from step 201, and performs repeated transmission according to the configuration.
  • the terminal device determines to perform repeated transmission on at least two links according to the situation of each link on the respective links, or performs repeated transmission on at least two links configured by the RAN device. For example, if the RAN device only configures the terminal device to enable repeated transmission or only indicates that the terminal device performs repeated transmission on a specified number of at least two links, the terminal device can determine which of all links by itself. Repeated transmission is performed on the link; if the RAN device configures at least two links of the terminal device for repeated transmission, the terminal device performs repeated transmission on the designated at least two links.
  • the terminal device sends an authorization request to the RAN device, and after receiving the transmission authorization sent by the RAN device, repeats transmission on at least two links according to resources authorized by the RAN device.
  • the terminal device does not need to send an authorization request to the RAN device and uses a grant-free or grant-less method to perform repeated transmission on at least two links. There are many ways for the terminal device to perform repeated transmission, which is not limited herein.
  • the method 200 further includes step 203.
  • the terminal device sends a repeated transmission configuration response to the RAN device.
  • the response is used to indicate that the terminal device successfully receives the repeated transmission configuration information sent by the RAN device.
  • the configuration of the RAN device to the repeated transmission of the terminal device is implemented, and the terminal device performs repeated transmission according to the configuration of the repeated transmission, thereby improving the robustness of the data transmission of the terminal device.
  • FIG. 3 is a schematic flowchart diagram of another repeated transmission method according to an embodiment of the present application.
  • the method 300 is applicable to the communication scenario shown in FIG. 1 and includes the following steps:
  • the RAN device sends RRC configuration signaling to the terminal device, where the RRC configuration signaling is used to configure repeated transmission of the terminal device.
  • the RRC configuration signaling includes a DRB identifier and/or a signaling type that are repeatedly transmitted.
  • the RRC configuration signaling indicates whether the DRB identified as DRB-Identity needs to be repeatedly transmitted; wherein the redundancy-indication is a Boolean variable, for example, when the value is 1, it is enabled (activated).
  • the repeated transmission of the DRB when the value is 0, turns off (deactivates) the repeated transmission of the DRB.
  • the RRC configuration signaling may further include multiple DRB-Identities to configure to enable (activate) or turn off (deactivate) the repeated transmission of multiple DRBs.
  • DRB-Identity can be used to indicate the DRBs that need to be repeatedly transmitted.
  • the manner shown in Table 1 can be used to indicate the DRBs that need to be repeatedly transmitted.
  • the RRC configuration signaling indicates whether a signaling type of repeated transmission is required, such as RRC signaling, PDCP control message, and MAC control message.
  • a signaling type of repeated transmission such as RRC signaling, PDCP control message, and MAC control message.
  • RRC-redundancy-indication value in Table 2 is 1, it indicates that the RRC signaling is repeatedly transmitted (activated), and when the RRC-redundancy-indication value is 0, it indicates that the RRC information is turned off (deactivated). Repeat transmission.
  • PDCP-redundancy-indication is used to indicate to enable (activate) or disable (deactivate) repeated transmission of PDCP control messages
  • MAC-redundancy-indication is used to indicate to enable (activate) or disable (deactivate) MAC control messages. Repeat the transfer.
  • Table 2 can be used to indicate repeated transmission of RRC signaling and PDCP control messages; for the scenario shown in FIG. 1(c)-1(e), Table 2 can be used to indicate pairing Repeated transmission of RRC signaling, PDCP control messages, and MAC control messages.
  • the RRC configuration signaling further indicates that at least two links of the DRB data and/or the signaling data are repeatedly transmitted.
  • Table 3(a) shows configuration information in which one DRB data is repeatedly transmitted on at least two carriers/cells, wherein the LogicalChannelIdentityList indicates that at least two of the DRBs are repeatedly transmitted.
  • a list of LCs the list may include an identification (Identity, ID) of at least two LCs, the number of LC IDs included in the list corresponding to the number of links that repeatedly transmit the DRB data.
  • the RRC configuration signaling can instruct the terminal device to perform repeated transmission on a specified number of at least two links, and the terminal device decides which cells to perform repeated transmission at its own discretion.
  • Table 3(a) may further include a cell identification list CellIdentityList indicating a list of cell identifiers transmitted by each LC data in the LogicalChannelIdentityList. It should be understood that in the scenario shown in FIG. 1(c), one LC corresponds to one cell. Optionally, the LC data corresponding to the first LC ID in the LogicalChannelIdentityList is transmitted on the cell corresponding to the first Cell ID in the CellIdentityList. In this way, the RRC configuration signaling can instruct the terminal device to repeat the transmission on the specified at least two links. In particular, when the list includes only one LC ID, it indicates that the RAN device indicates that the terminal device is transmitting on only one link.
  • the RRC configuration signaling may further include at least two DRB-Identities to configure repeated transmission of data of at least two DRBs.
  • Table 3(b) shows configuration information in which data of one DRB is repeatedly transmitted on at least two types of Numerology.
  • one LC corresponds to a Numerology, and therefore, Numerology-TTI-List is used to indicate a list of Numerology identifiers or serial numbers transmitted by each LC data in the LogicalChannelIdentityList.
  • Table 3(c) shows configuration information in which data of one DRB is repeatedly transmitted on at least two antenna ports.
  • the Antenna-port-List is used to indicate a list of antenna port identifiers or serial numbers transmitted by each LC data in the LogicalChannelIdentityList.
  • the foregoing LogicalChannelIdentityList, CellIdentityList, Numerology-TTI-List, and Antenna-port-List may have other names as long as they can respectively represent a list of identifiers of at least two logical channels, a list of identifiers of at least two cells, and at least two.
  • a list of identifiers of the Numerology and a list of at least two antenna port identifiers are not limited herein.
  • the DRB-redundancy and the DRB-Identity in Tables 3(a) to 3(c) can be replaced with SRB-redundancy and SRB-Identity, respectively.
  • Table 4 shows configuration information in which one DRB data is repeatedly transmitted on at least two cells managed by at least two RAN devices, wherein the terminal device can and the primary RAN At least one of the primary cell group (MCG) managed by the device (such as the RAN device 101 in FIG. 1) communicates, and the secondary cell managed by the secondary RAN device (such as the RAN device 102 in FIG. 1) At least one cell in the group (Secondary Cell Group, SCG) performs communication.
  • MCG primary cell group
  • SCG Secondary Cell Group
  • the MCGcellIdentityList identifies a list of identifiers of at least one cell managed by at least one primary RAN device that repeatedly transmits the DRB data; the SCGcellIdentitylist represents a list of identifiers of at least one cell of the at least one secondary RAN device that repeatedly transmits the DRB. Further, the RRC configuration signaling may further include multiple DRB-Identities to configure repeated transmission of multiple DRBs.
  • the RRC configuration signaling may be an RRC Connection Reconfiguration message, an RRC Connection Resume message, or an RRC Connection Reestablishment message.
  • the terminal device performs repeated transmission according to the RRC configuration signaling.
  • the terminal device configures the manner of repeated transmission and/or the content of the repeated transmission according to the RRC configuration signaling acquired in step 301, and performs repeated transmission according to the configuration.
  • the terminal device determines to perform repeated transmission on at least two links according to the situation of each link on the respective links, or performs repeated transmission on at least two links configured by the RAN device. For example, if the RAN device only configures the terminal device to enable repeated transmission or only indicates that the terminal device performs repeated transmission on a specified number of at least two links, the terminal device can determine which of all links by itself. Repeated transmission is performed on the link; if the RAN device configures at least two links of the terminal device for repeated transmission, the terminal device performs repeated transmission on the designated at least two links.
  • the terminal device sends an authorization request to the RAN device, and after receiving the transmission authorization sent by the RAN device, repeats transmission on at least two links according to resources authorized by the RAN device.
  • the terminal device does not need to send an authorization request to the RAN device and uses a grant-free or grant-less method to perform repeated transmission on at least two links. There are many ways for the terminal device to perform repeated transmission, which is not limited herein.
  • the method 300 further includes step 303.
  • the terminal device sends an RRC configuration signaling response to the RAN device.
  • the response is used to indicate that the terminal device successfully receives the RRC configuration signaling sent by the RAN device.
  • the RRC configuration signaling may be an RRC Connection Reconfiguration Complete message, an RRC Connection Resume Complete message, or an RRC Connection Reestablishment Complete message. .
  • the configuration of the RAN device to the repeated transmission of the terminal device by the RRC signaling is implemented, and the terminal device performs repeated transmission according to the configuration of the repeated transmission, thereby improving the robustness of the transmission of the terminal device.
  • FIG. 4 is a schematic flowchart diagram of still another method for repeating transmission according to an embodiment of the present application.
  • the method 400 is applicable to the communication scenario shown in FIG. 1 and includes the following steps:
  • the RAN device sends PDCP configuration signaling to the terminal device, where the PDCP configuration signaling is used to configure repeated transmission of the terminal device.
  • the PDCP configuration signaling may include repeatedly transmitted DRB data or Signaling Radio Bearer (SRB) data.
  • SRB Signaling Radio Bearer
  • a PDCP entity corresponding to both the terminal device and the RAN device processes corresponding DRB data or SRB data at the PDCP layer. Therefore, for any one DRB or SRB, the RAN device may have one PDCP configuration signaling to configure repeated transmission of the DRB data or SRB data.
  • the PDCP configuration signaling may adopt the format shown in FIG. 5, where the bit D/C is used to indicate whether the PDCP protocol data unit (PDU) is a control PDU or a data PDU; the PDU Type is used to Indicates the type of the PDCP PDU; the bit R is used to indicate the reserved bit; and the bit I is used to repeat the transmission indication.
  • PDU PDCP protocol data unit
  • the bit R is used to indicate the reserved bit
  • the bit I is used to repeat the transmission indication.
  • the D/C bit may be set to 1, indicating that the PDCP PDU is a control message; and the PDU Type is set to a multi-bit value (such as 110) to indicate
  • the PDCP PDU is a repetitive transmission control message, and is used to configure the repeated transmission of the DRB data or the SRB data corresponding to the PDCP of the terminal device;
  • the repeated transmission indication I is set to 1, indicating that the DRB data or the SRB data corresponding to the PDCP is repeatedly transmitted.
  • the repeated transmission indication I is set to 0, indicating that the DRB data or SRB data corresponding to the PDCP is not repeatedly transmitted.
  • the PDCP configuration signaling of the embodiment of the present application can be used to configure the repeated transmission of the terminal device.
  • the terminal device performs repeated transmission according to PDCP configuration signaling.
  • the terminal device configures the manner of repeated transmission and/or the content of the repeated transmission according to the PDCP configuration signaling acquired in step 401, and performs repeated transmission according to the configuration.
  • the terminal device determines to perform repeated transmission on at least two links according to its own situation on each link.
  • the terminal device sends an authorization request to the RAN device, and after receiving the transmission authorization sent by the RAN device, repeats transmission on at least two links according to resources authorized by the RAN device.
  • the terminal device does not need to send an authorization request to the RAN device and uses a grant-free or grant-less method to perform repeated transmission on at least two links. There are many ways for the terminal device to perform repeated transmission, which is not limited herein.
  • the configuration of the RAN device to repeatedly transmit the terminal device by using the PDCP signaling is implemented, and the terminal device performs repeated transmission according to the configuration of the repeated transmission, thereby improving the robustness of the data transmission of the terminal device.
  • FIG. 6 is a schematic flowchart diagram of still another method for repeating transmission according to an embodiment of the present application.
  • the method 600 is applicable to the communication scenario shown in FIG. 1 and includes the following steps:
  • the RAN device sends MAC configuration signaling to the terminal device, where the MAC configuration signaling is used to configure repeated transmission of the terminal device.
  • the MAC configuration signaling can be sent to the terminal device by using a MAC CE.
  • FIG. 7 is a schematic diagram of configuring repeated transmission of the terminal device by using a MAC CE according to an embodiment of the present invention.
  • the MAC CE includes a MAC subheader, an LC ID or a Logical Channel Group (LCG) identifier, and a repeated transmission indication.
  • the MAC CE of the RAN device includes an LC ID corresponding to the LC data that needs to be repeatedly transmitted, and a corresponding repeated transmission indication; wherein the MAC sub-head is used to indicate that the MAC CE is used for configuration. Repeated transmission of terminal equipment.
  • the repeated transmission indication may be 1 bit of indication information for informing to enable (activate) or disable (deactivate) the repeated transmission of the LC. For example, when the repeated transmission indication value is 1, it indicates that the terminal device needs to repeatedly transmit the LC data. When the repeated transmission indication value is 0, it indicates that the terminal device does not need to repeatedly transmit the LC data.
  • the MAC CE of the RAN device may further include an LCG ID corresponding to the LCG data that needs to be repeatedly transmitted, and a corresponding repeated transmission indication. The repeated transmission indication is used to indicate to turn on (activate) or turn off (deactivate) the data of the LCG. Further, the repeated transmission indications in FIGS.
  • 7(a) and 7(b) may also employ multiple bits to indicate repeated transmission of data to the LC/LCG.
  • the repeated transmission indication is two bits and the value is 00, it indicates that the data of the LC/LCG identified by the LC/LCG ID is repeatedly transmitted; the repeated transmission indication is two bits and the value is 01. Indicates that the data of the LC/LCG identified by the LC/LCG ID is transmitted twice; when the repeated transmission indication is two bits and the value is 10, the data of the LCLC/LCG identified by the LCLC/LCG ID is performed.
  • the repeated transmission indication is two bits and the value is 11, indicating that the data of the LCLC/LCG identified by the LCLC/LCG ID is repeatedly transmitted four times.
  • the repeated transmission may be configured using the MAC CE configuration as shown in FIG. 7(C).
  • the MAC CE includes an indication of the LC that needs to be repeatedly transmitted.
  • A0 to A7 are 8-bit indications.
  • Ai is 1, the LC data corresponding to the LC ID of the i-number is opened (activated), and the value of Ai is 0. (deactivation) Repeated transmission of LC data corresponding to the LC ID of serial number i.
  • the MAC configuration signaling of the embodiment of the present application can be used to configure the repeated transmission of the terminal device.
  • the terminal device performs repeated transmission according to the MAC configuration signaling.
  • the terminal device configures the manner of repeated transmission and/or the content of the repeated transmission according to the MAC configuration signaling acquired in step 601, and performs repeated transmission according to the configuration.
  • the terminal device determines to perform repeated transmission on at least two links according to the situation of each link on the respective links, or performs repeated transmission on at least two links configured by the RAN device. For example, if the RAN device only configures the terminal device to enable repeated transmission or only indicates that the terminal device performs repeated transmission on a specified number of at least two links, the terminal device can determine which of all links by itself. Repeated transmission is performed on the link; if the RAN device configures at least two links of the terminal device for repeated transmission, the terminal device performs repeated transmission on the designated at least two links.
  • the terminal device sends an authorization request to the RAN device, and after receiving the transmission authorization sent by the RAN device, repeats transmission on at least two links according to resources authorized by the RAN device.
  • the terminal device does not need to send an authorization request to the RAN device and uses a grant-free or grant-less method to perform repeated transmission on at least two links. There are many ways for the terminal device to perform repeated transmission, which is not limited herein.
  • the data transmission rate on each carrier is different due to inconsistent wireless channel quality on multiple links.
  • the transmission of the data on the carrier with poor radio channel quality may be invalid. Therefore, in the process of repeated transmission, the PDCP entity of the terminal device may obtain the terminal device in each link from the PDCP status report sent by the RAN device.
  • the status of the repeated transmission for example, on which links the transmission is completed, on which links the transmission is not completed, etc.
  • the PDCP entity of the terminal device sends a PDCP PDU transmission status report to the RLC entity of the terminal device, for example
  • the PDCP PDU has been successfully transmitted, and the RLC entity of the terminal device discards the invalid PDCP PDU according to the PDCP PDU transmission status report, for example, discards the PDCP PDU in the RLC entity that has not completed the transmission.
  • the configuration of the RAN device to repeatedly transmit the terminal device by using the MAC signaling is implemented, and the terminal device performs repeated transmission according to the configuration of the repeated transmission, thereby improving the robustness of data transmission of the terminal device.
  • FIG. 8 is a schematic flowchart diagram of still another method for repeating transmission according to an embodiment of the present application.
  • the method 800 is applicable to various communication scenarios shown in FIG. 1, and includes the following steps:
  • the RAN device sends the repeated transmission trigger information to the terminal device, where the repeated transmission trigger information is used to configure a trigger condition for the terminal device to perform repeated transmission.
  • the repeated transmission trigger information includes a threshold of at least one network metric that triggers at least one link of the repeated transmission.
  • the network metric is a reference signal received power (RSRP), a reference signal received quality (RSRQ), a packet loss rate, or an automatic repeat request (Automatic Repeat). Request, ARQ) The number of retransmissions, etc.
  • the repeated transmission trigger information indicates an RSRP/RSRP threshold that triggers repeated transmission of the link identified as Link-ID.
  • RSRP_threshold/RSRQ_threshold indicates that repeated transmission of the link data is triggered when the RSRP/RSRQ measurement value of the link is lower than or equal to RSRP_threshold/RSRQ_threshold; when the RSRP/RSRQ measurement value of the link is higher than RSRP_threshold/RSRQ_threshold
  • the link data is transmitted repeatedly. It should be understood that the repeated transmission of the link data may be repeated transmission of data of the DRB of the link, or may be repeated transmission of signaling data of the link. Illustratively, for the scenario of FIG. 1(b) and FIG.
  • the Link-ID may be a Cell ID, corresponding to a cell connected to the terminal device; for the scenario of FIG. 1(d), the Link-ID may be Subcarrier spacing/cyclic prefix length indication, a kind of Numerology corresponding to the connection of the terminal device; for the scenario of FIG. 1(e), the Link-ID may be a Channel State Information-Reference Signal (CSI-RS) Corresponding antenna port ID or port number.
  • CSI-RS Channel State Information-Reference Signal
  • the Link-ID may also use different identifiers such as LogicalChannelIdentity, SCGcellIdentity, MCGcellIdentity, Numerology-TTI-ID, and Antenna-port-ID to distinguish different links.
  • the foregoing Cell ID, subcarrier spacing/cyclic prefix length indication, SCGcellIdentity, MCGcellIdentity, Numerology-TTI-ID, and Antenna-port-ID may have other names as long as they can indicate the identifier of the logical channel, the identity of the cell, and the Numerology.
  • the identifier of the antenna and the identifier of the antenna port can be used, which is not limited herein.
  • the repeated transmission trigger information indicates a threshold of a packet loss rate that triggers repeated transmission of the DRB identified as DRB-Identity. For example, when the packet loss rate in the PDCP status report of the DRB identified as the DRB-Identity is higher than the Missing-threshold, the repeated transmission of the data of the DRB is triggered, and when the packet loss rate is not lower than the Missing-threshold, the transmission is not repeated.
  • DRB data may be used to indicate the data that triggers the repeated transmission of the DRB.
  • the DRB-Identity in Table 6 may be replaced with SRB-Identity.
  • the repeated transmission trigger information indicates a threshold for triggering the number of ARQ retransmissions of the repeated transmission of the DRB identified as DRB-Identity. For example, when the number of ARQ retransmissions of the LC identified as LogicalChannelIdentity in the DRB identified as DRB-Identity is higher than the ARQ-threshold, the repeated transmission of the LC data is triggered, when the number of retransmissions of the ARQ is not lower than the ARQ-threshold.
  • the data of the LC is not repeatedly transmitted.
  • the manner of the embodiment of the present application may be used to indicate the data that triggers the repeated transmission of the DRB.
  • the DRB-Identity in Table 7 may be replaced with SRB-Identity.
  • the terminal device performs repeated transmission according to the repeated transmission trigger information.
  • the terminal device compares the measured network metric according to the repeated transmission trigger information acquired from step 801, for example, the measured RSRP/RSRQ value of one link and the corresponding RSRP_threshold/ in the repeated transmission trigger information.
  • the RSRQ_threshold comparison compares the packet loss rate in a PDCP status report with the corresponding Missing-threshold in the repeated transmission trigger information, and compares the number of ARQ retransmissions of one LC with the corresponding ARQ-threshold in the repeated transmission trigger information, and compares The data of the link is repeatedly transmitted when at least one trigger condition is met.
  • the terminal device determines to perform repeated transmission on at least two links according to a situation on the respective links, and the terminal device sends an authorization request to the RAN device, where After receiving the transmission authorization sent by the RAN device, the resource authorized by the RAN device is repeatedly transmitted on at least two links.
  • the terminal device may also perform repeated transmission on at least two links in an grant-free or grant-less manner without sending an authorization request to the RAN device. There are many ways for the terminal device to perform repeated transmission, which is not limited herein.
  • the terminal device determines to perform repeated transmission on at least two links according to the situation of each link on the respective links, or performs repeated transmission on at least two links configured by the RAN device. For example, if the RAN device only configures the terminal device to enable repeated transmission or only indicates that the terminal device performs repeated transmission on a specified number of at least two links, the terminal device can determine which of all links by itself. Repeated transmission is performed on the link; if the RAN device configures at least two links of the terminal device for repeated transmission, the terminal device performs repeated transmission on the designated at least two links.
  • the terminal device sends an authorization request to the RAN device, and after receiving the transmission authorization sent by the RAN device, repeats transmission on at least two links according to resources authorized by the RAN device.
  • the terminal device does not need to send an authorization request to the RAN device and uses a grant-free or grant-less method to perform repeated transmission on at least two links. There are many ways for the terminal device to perform repeated transmission, which is not limited herein.
  • the method 800 further includes step 803.
  • the terminal device sends a repeated transmission trigger response to the RAN device.
  • the response is used to indicate that the terminal device successfully receives the repeated transmission trigger information sent by the RAN device.
  • the information transmitted by the RAN device to the terminal device herein is referred to as repeated transmission configuration information or repeated transmission trigger information.
  • the information sent by the access network device to the terminal device may have other names, such as data retransmission configuration information, packet retransmission configuration information, data retransmission transmission trigger information, packet retransmission transmission trigger information, etc. This defines the specific information name of the information sent by the access network device to the terminal device. It can be understood that the configuration information herein is not a proper noun. In actual applications, other names may be used, but they are not separated. The essence of this patent application.
  • the foregoing information and various signaling (such as RRC configuration signaling, PDCP configuration signaling, and MAC configuration signaling) of the RAN device and the terminal device may be carried in a message of any name, which is not limited herein. .
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium such as a solid state disk (SSD)
  • FIG. 9 is a schematic block diagram of a terminal device 900 according to an embodiment of the present application.
  • the terminal device 900 may correspond to (for example, may be configured or itself) a terminal device described in the foregoing method 200, or described in the foregoing method 300.
  • the terminal device 900 can include a processor 901 and a transceiver 902, and the processor 901 and the transceiver 902 are communicatively coupled.
  • the terminal device 900 further includes a memory 903, and the memory 903 is communicatively coupled to the processor 901.
  • the processor 901, the memory 903, and the transceiver 902 can be communicatively coupled.
  • the memory 903 can be used to store instructions for executing instructions stored in the memory 903 to control the transceiver 902 to transmit information or signals.
  • the processor 901 and the transceiver 902 are respectively configured to execute the terminal device in the foregoing method 200, or the terminal device in the foregoing method 300, or the terminal device in the foregoing method 400, or the terminal device in the foregoing method 600, or The actions or processes performed by the terminal device in method 800.
  • a detailed description thereof will be omitted.
  • FIG. 10 is another schematic block diagram of a terminal device 1000 according to an embodiment of the present application.
  • the terminal device 1000 may correspond to, for example, the terminal device described in the foregoing method 200, or the method 300 described above.
  • the terminal device 1000 may include: a receiving module 1001, a processing module 1002, and a sending module 1003.
  • the processing module 1002 is communicably connected to the receiving module 1001 and the sending module 1003, respectively.
  • Each module or unit in the terminal device 1000 is configured to perform the terminal device in the foregoing method 200, or the terminal device in the foregoing method 300, or the terminal device in the method 400, or the terminal device in the method 600, or the foregoing
  • the actions or processes performed by the terminal device in method 800 are described.
  • a detailed description thereof will be omitted.
  • Figure 11 shows a schematic block diagram of a RAN device 1100 of an embodiment of the present application, which may correspond to (e.g., may be configured or itself) the RAN device described in the above method 200, or described in the method 300 above.
  • the RAN device 1100 can include a processor 1101 and a transceiver 1102, and the processor 1101 and the transceiver 1102 are communicatively coupled.
  • the RAN device 1100 further includes a memory 1103, and the memory 1103 is communicatively coupled to the processor 1101.
  • the processor 1101, the memory 1103, and the transceiver 1102 can be communicatively coupled.
  • the memory 1103 can be used to store instructions for executing the instructions stored by the memory 1103 to control the transceiver 1102 to transmit information or signals.
  • the processor 1101 and the transceiver 1102 are respectively configured to perform the RAN device in the foregoing method 200, or the RAN device in the foregoing method 300, or the RAN device in the foregoing method 400, or the RAN device in the foregoing method 600, or The RAN device in method 800, the various actions or processes performed.
  • a detailed description thereof will be omitted.
  • FIG. 12 shows another schematic block diagram of a RAN device 1200 according to an embodiment of the present application.
  • the RAN device 1200 may correspond to (eg, may be configured or itself) the RAN device described in the foregoing method 200, or the method 300 described above.
  • the RAN device 1200 can include a receiving module 1201, a processing module 1202, and a sending module 1203.
  • the processing module 1202 is communicatively coupled to the receiving module 1201 and the sending module 1203, respectively.
  • Each module or unit in the RAN device 1200 is configured to perform the RAN device in the method 200, or the RAN device in the method 300, or the RAN device in the method 400, or the RAN device in the method 600, or the foregoing
  • the RAN device in method 800 the various actions or processes performed.
  • a detailed description thereof will be omitted.
  • the processor (901, 1101) in the device embodiment of the present application may be a Central Processing Unit (CPU), a Network Processor (NP), a hardware chip, or any combination thereof.
  • the hardware chip may be an Application-Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof.
  • the PLD may be a Complex Programmable Logic Device (CPLD), a Field-Programmable Gate Array (FPGA), a Generic Array Logic (GAL) or any of the above. combination.
  • the memory (903, 1103) in the device embodiment of the present application may be a volatile memory (Volatile Memory), such as a random access memory (RAM), or a non-volatile memory (Non- Volatile Memory), such as Read-Only Memory (ROM), Flash Memory, Hard Disk Drive (HDD) or Solid-State Drive (SSD); It is a combination of the above types of memories.
  • Volatile Memory such as a random access memory (RAM)
  • Non- Volatile Memory such as Read-Only Memory (ROM), Flash Memory, Hard Disk Drive (HDD) or Solid-State Drive (SSD); It is a combination of the above types of memories.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of cells is only a logical function division.
  • multiple units or components may be combined or integrated. Go to another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separate, and the 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 of the embodiment.
  • each functional unit in each embodiment of the present patent application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM, abbreviated as Read-Only Memory), a random access memory (RAM, abbreviated as Random Access Memory), a magnetic disk or an optical disk, and the like, and the program code can be stored. Medium.

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Abstract

本专利申请提供了一种重复传输的方法和装置。该方法包括：终端设备接收接入网RAN设备发送的重复传输配置信息，该重复传输配置信息包括配置该终端设备的重复传输的模式和／或重复传输的内容；该终端设备根据所述重复传输配置信息进行重复传输。通过本申请的重复传输的方法，提高了终端设备数据传输的鲁棒性。

Description

重复传输的方法及装置
本申请要求于2017年4月19日提交中国专利局、申请号为201710257589.7、申请名称为“重复传输的方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信领域，尤其涉及一种重复传输的方法和装置。
背景技术
随着无线通信技术的飞速发展，第五代(5th Generation,5G)无线通信技术已是目前业界的热点。5G将支持多样化的应用需求，其中包括支持更高速率体验和更大带宽的接入能力、更低时延和高可靠的信息交互、以及更大规模且低成本的机器类通信设备的接入和管理等。此外，5G将支持面向车联网、应急通信、工业互联网等各种垂直行业应用场景。
高可靠低延时通信(Ultra-Reliable and Low Latency Communications,URLLC)是5G中的一种重要通信类型。URLLC是一种对时延和可靠性要求很高的通信业务，例如应用在无人驾驶、远程医疗等场景。该类型业务对用户平面的延时要求需要达到上行/下行传输0.5ms；对于32字节长度的传输在用户面延时为1ms的情况下可靠性需要达到1-10-5等。为了支持URLLC业务，需要对现有移动通信系统的空口技术进一步的优化。例如在物理层上可使用更强健的调制/编码技术、更短发送时间间隔的调度等。如何在上层(如媒体接入控制层、无线链路控制层、分组数据汇聚协议层等)有效地支持URLLC业务数据的传输，目前尚未有适当的解决方案。
发明内容
本申请实施例提供一种重复传输的方法，以提高终端设备数据传输的鲁棒性。
第一方面，本申请实施例提供一种重复传输的方法，包括：终端设备接收接入网RAN设备发送的重复传输配置信息，该重复传输配置信息包括配置该终端设备的重复传输的模式和/或重复传输的内容；该终端设备根据该重复传输配置信息进行重复传输。因此，根据本申请实施例的重复传输方法，实现了终端设备根据RAN设备发送的重复传输的配置进行重复传输，提高该终端设备数据传输的鲁棒性。
在一种可能的实现方式中，该终端设备通过以下配置信令中的至少一种接收该RAN设备发送的重复传输配置信息：无线资源控制配置信令、分组数据汇聚协议配置信令、以及媒体接入控制配置信令。通过多种信令的重复传输配置方法，本申请实施例实现了重复传输配置的灵活性，并能实现不同协议层的数据的重复传输。
在一种可能的实现方式中，该配置终端设备的重复传输的模式用于指示该终端设备是否进行重复传输或在至少两条链路上进行重复传输。因此，本申请实施例实现了多种方式的重复传输配置。
在一种可能的实现方式中，该配置终端设备的重复传输的内容用于指示该终端设备要进行重复传输的数据无线承载数据和/或信令数据。因此，本申请实施例实现了对多种类型数据的重复传输配置。
在一种可能的实现方式中，该指示终端设备在至少两条链路上进行重复传输，还包括：指示该终端设备在指定数目的至少两条链路上进行重复传输；或指示该终端设备在指定的至少两条链路上行进行重复传输。
在一种可能的实现方式中，该至少两条链路对应于该终端设备通过以下方式中的至少一种与该RAN设备进行通信：至少两个逻辑信道、至少两个小区、至少两个载波、至少两种物理层参数、以及至少两个天线端口。因此，本申请实施例实现了多种通信场景下的终端设备的重复传输配置。
在一种可能的实现方式中，该信令数据包括以下数据中的至少一种：无线资源控制信令数据、分组数据汇聚协议层控制消息、以及媒体接入控制层控制消息。因此，本申请实施例实现了多种信令数据的重复传输配置。
在一种可能的实现方式中，该分组数据汇聚协议配置信令包括协议数据单元类型和重复传输指示；该协议数据单元类型用于指示该分组数据汇聚协议配置信令用于配置该终端设备的重复传输；该重复传输指示用于指示是否重复传输该分组数据汇聚层配置信令所对应的分组数据汇聚协议层的数据无线承载数据或信令无线承载数据。因此，本申请实施例实现了通过分组数据汇聚协议配置信令对分组数据汇聚协议层的数据无线承载数据或信令无线承载数据的重复传输配置。
在一种可能的实现方式中，该媒体接入控制配置信令包括媒体接入控制层控制元素；该媒体接入控制层控制元素包括媒体接入控制子头、逻辑信道标识或逻辑信道组标识、以及重复传输指示；该媒体接入控制子头用于指示该媒体接入控制层控制元素用于配置该终端设备的重复传输；该重复传输指示用于指示是否重复传输该逻辑信道标识或逻辑信道组标识所对应的逻辑信道数据或逻辑信道组数据。因此，本申请实施例实现了通过媒体接入控制配置信令对媒体接入控制层的逻辑信道数据或逻辑信道组数据的重复传输配置。
第二方面，本申请实施例提供一种重复传输的方法，包括：接入网RAN设备向该终端设备发送重复传输配置信息，该重复传输配置信息包括配置该终端设备的重复传输的模式和/或重复传输的内容；该RAN设备接收该终端设备的重复传输。因此，根据本申请实施例的重复传输方法，实现了RAN设备配置终端设备进行重复传输，提高该终端设备数据传输的鲁棒性。
在一种可能的实现方式中，该RAN设备通过以下配置信令中的至少一种向该终端设备发送该重复传输配置信息：无线资源控制配置信令、分组数据汇聚协议层配置信令、以及媒体接入控制层配置信令。通过多种信令的重复传输配置方法，本申请实施例实现了重复传输配置的灵活性，并能实现不同协议层的数据的重复传输。
在一种可能的实现方式中，该配置终端设备的重复传输的模式用于指示该终端设备是否进行重复传输或在至少两条链路上进行重复传输。因此，本申请实施例实现了多种方式的重复传输配置。
在一种可能的实现方式中，该配置终端设备的重复传输的内容用于指示该终端设备要进行重复传输的数据无线承载数据和/或信令数据。因此，本申请实施例实现了对多种类型数据的重复传输配置。
在一种可能的实现方式中，该指示终端设备在至少两条链路上进行重复传输，还包括：指示该终端设备在指定数目的至少两条链路上进行重复传输；或指示该终端设备在指定的至少两条链 路上行进行重复传输。
在一种可能的实现方式中，该至少两条链路对应于该终端设备通过以下方式中的至少一种与该RAN设备进行通信：至少两个逻辑信道、至少两个小区、至少两个载波、至少两种物理层参数、以及至少两个天线端口。因此，本申请实施例实现了多种通信场景下的终端设备的重复传输配置。
在一种可能的实现方式中，该信令数据包括以下数据中的至少一种：无线资源控制信令数据、分组数据汇聚协议层控制消息、以及媒体接入控制层控制消息。
在一种可能的实现方式中，该分组数据汇聚协议配置信令包括协议数据单元类型和重复传输指示；该协议数据单元类型用于指示该分组数据汇聚协议配置信令用于配置该终端设备的重复传输；该重复传输指示用于指示是否重复传输该分组数据汇聚层配置信令所对应的分组数据汇聚协议层的数据无线承载数据或信令无线承载数据。因此，本申请实施例实现了通过分组数据汇聚协议配置信令对分组数据汇聚协议层的数据无线承载数据或信令无线承载数据的重复传输配置。
在一种可能的实现方式中，该媒体接入控制配置信令包括媒体接入控制层控制元素；该媒体接入控制层控制元素包括媒体接入控制子头、逻辑信道标识或逻辑信道组标识、以及重复传输指示；该媒体接入控制子头用于指示该媒体接入控制层控制元素用于配置该终端设备的重复传输；该重复传输指示用于指示是否重复传输该逻辑信道标识或逻辑信道组标识所对应的逻辑信道数据或逻辑信道组数据。因此，本申请实施例实现了通过媒体接入控制配置信令对媒体接入控制层的逻辑信道数据或逻辑信道组数据的重复传输配置。
第三方面，本申请实施例提供一种重复传输的方法，包括：终端设备接收接入网RAN设备发送的重复传输触发信息，该重复传输触发信息用于配置该终端设备进行重复传输的触发条件；该终端设备根据该重复传输触发信息进行重复传输。因此，根据本申请实施例的重复传输方法，实现了终端设备接收RAN设备配置的重复传输的触发条件，提高该终端设备在满足触发条件时的数据传输的鲁棒性。
在一种可能的实现方式中，该重复传输触发信息包括触发重复传输的至少一条链路的至少一种网络度量的阈值；该至少一条链路对应于该终端设备通过以下方式中的至少一种与该RAN设备进行通信：一个小区、一个载波、一种物理层参数、以及一个天线端口；该网络度量包括以下中的至少一种：参考信号接收功率、参考信号接收质量、丢包率、以及自动重传请求的重传次数。通过使用多种网络度量作为重复传输的触发条件，本申请实施例实现了终端设备在多种情况下的重复传输。
在一种可能的实现方式中，该终端设备在满足至少一个触发条件时对该链路的数据进行重复传输，该重复传输包括该终端设备的数据无线承载数据和/或信令数据的重复传输。因此，本申请实施例实现了对多种类型数据的重复传输的触发。
第四方面，本申请实施例提供一种重复传输的方法，包括：接入网RAN设备向终端设备发送重复传输触发信息，该重复传输触发信息用于配置该终端设备进行重复传输的触发条件；该RAN设备接收该终端设备根据该重复传输触发信息发送的重复传输。因此，根据本申请实施例的重复传输方法，实现了RAN设备配置终端设备进行重复传输的触发条件，提高该终端设备在满足触发条件时的数据传输的鲁棒性。
在一种可能的实现方式中，该重复传输触发信息包括触发重复传输的至少一条链路的至少一种网络度量的阈值；该至少一条链路对应于该终端设备通过以下方式中的至少一种与该RAN设备进行通信：一个小区、一个载波、一种物理层参数、以及一个天线端口；该网络度量包括以下中 的至少一种：参考信号接收功率、参考信号接收质量、丢包率、以及自动重传请求的重传次数。通过使用多种网络度量作为重复传输的触发条件，本申请实施例实现了终端设备在多种情况下的重复传输。
在一种可能的实现方式中，该RAN设备在该终端设备满足至少一个触发条件时发送的重复传输，该重复传输包括该终端设备的数据无线承载数据和/或信令数据的重复传输。因此，本申请实施例实现了对多种类型数据的重复传输的触发。
第五方面，提供了一种通信装置，用于执行第一至第四方面或第一至第四方面的任一种可能的实现方式中的方法，具体地，该通信装置可以包括用于执行第一至第四方面或第一至第四方面的任一种可能的实现方式中的方法的单元。
第六方面，提供了一种通信装置，包括存储器和处理器，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得通信设备执行第一至第四方面或第一至第四方面的任一种可能的实现方式中的方法。
第七方面，提供了一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码被通信设备(例如，网络设备或网管设备)的通信单元、处理单元或收发器、处理器运行时，使得通信设备执行第一至第四方面或第一至第四方面的任一种可能的实现方式中的方法。
第八方面，提供了一种计算机可读存储介质，该计算机可读存储介质存储有程序，该程序使得用户设备执行第一至第四方面或第一至第四方面的任一种可能的实现方式中的方法。
本发明的这些和其他方面在以下(多个)实施例的描述中会更加简明易懂。
附图说明
下面对本申请实施例或现有技术描述中使用的附图作简单地介绍：
图1是本申请实施例提供的一种通信场景；
图2是本申请实施例提供的一种重复传输的流程示意图；
图3是本申请实施例提供的另一种重复传输的流程示意图；
图4是本申请实施例提供的又一种重复传输的流程示意图；
图5是本申请实施例提供的一种PDCP配置信令示意图；
图6是本申请实施例提供的又一种重复传输的流程示意图；
图7是本申请实施例提供的一种MAC配置信令示意图；
图8是本申请实施例提供的又一种重复传输的流程示意图；
图9是本申请实施例提供的终端设备的一种示意性框图；
图10是本申请实施例提供的终端设备的另一种示意性框图；
图11是本申请实施例提供的RAN设备的一种示意性框图；
图12是本申请实施例提供的RAN设备的另一种示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例进行描述。
在本申请中，“示例性”一词用来表示“用作例子、例证或说明”。本申请中被描述为“示例性”的任何实施例不一定被解释为比其它实施例更优选或更具优势。为了使本领域任何技术人 员能够实现和使用本发明，给出了以下描述。在以下描述中，为了解释的目的而列出了细节。应当明白的是，本领域普通技术人员可以认识到，在不使用这些特定细节的情况下也可以实现本发明。在其它实例中，不会对公知的结构和过程进行详细阐述，以避免不必要的细节使本发明的描述变得晦涩。因此，本发明并非旨在限于所示的实施例，而是与符合本申请所公开的原理和特征的最广范围相一致。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”“第四”等(如果存在)是用于区别类似的对象，而不必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，以便这里描述的本发明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。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
下面以具体地实施例对本发明的技术方案进行详细说明。下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例不再赘述。
应理解，本申请实施例可以应用于各种通信系统，例如：全球移动通讯(Global System for Mobile communications,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)系统、LTE频分双工(Frequency Division Duplex,FDD)系统、LTE时分双工(Time Division Duplex,TDD)系统、先进的长期演进(Advanced long term evolution,LTE-A)系统、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)或下一代无线通信系统，例如新接入(New Radio,NR)系统，演进的LTE(evolved LTE,eLTE)等。
作为5G的一个典型应用场景，无人驾驶、远程医疗等应用需要无线网络提供具有高可靠性和低时延的URLLC业务。为此，本发明实施例提出一种在至少两条链路进行重复传输的技术方案来实现对URLLC业务数据的传输，提高URLLC业务数据传输的可靠性和对低时延的保证。当终端设备在移动网络的覆盖范围内，终端设备可以和一个基站建立无线连接以实现终端设备和网络之间的通信。终端设备和基站之间可以存在至少两条链路，例如终端设备可以通过至少两个载波、至少两种物理层参数(Numerology)、或至少两个天线端口和基站通信；其中每个载波、每种Numerology、或每个天线端口可以称为一条链路。进一步地，终端设备还可以和至少两个基站建立无线连接，例如终端设备通过双连接/多连接技术同时建立和至少两个基站的连接，在这种情况下终端设备和每一个基站之间的连接称为一条链路，终端设备存在至少两条链路与网络进行通信。
图1示出了本发明实施例提供的通信场景，其中在图1(a)中，终端设备110通过无线连接121与RAN设备101进行通信，其中RAN设备可以是WLAN中的接入点(ACCESS POINT,AP)，GSM或CDMA中的基站(Base Transceiver Station,BTS)，也可以是WCDMA中的基站(NodeB,NB)，还可以是LTE中的演进型基站(Evolved Node B,eNB或eNodeB)，或者中继站或接入点，或者 车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备，例如可以是5G的基站(例如Next-Generation Node B(简称gNB)或Next-Generation Radio(简称NR)等)，传输与接收点(TRAN设备smission and Reception Point,TRP)，集中式处理单元(Centralized Unit,CU)，分布式处理单元(Distributed Unit,DU)等。应理解，在实际网络中，RAN设备101可以为多个终端设备提供服务；此外，终端设备110也可以同时与至少两个RAN设备建立无线连接进行通信，例如终端设备110还通过无线连接122与RAN设备102进行通信。图1(b)至图1(e)分别示出在双连接/多连接场景、载波聚合场景、多Numerology场景以及多天线场景中的通信所使用的时频资源，其中x轴表示时间，y轴表示频率。在本申请实施例中，终端设备110通过至少一个RAN设备(如RAN设备101或RAN设备102)所管理的小区使用的传输资源(例如，频域资源，或者说，频谱资源)与至少一个RAN设备进行通信，该小区可以是RAN设备(例如基站)对应的小区，小区可以属于宏小区(Macro Cell)，超级小区(Hyper Cell)，也可以属于小小区(small cell)对应的基站，这里的小小区可以包括：城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
终端设备110也可以称为用户设备(User Equipment,UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备110可以是无线局域网(Wireless Local Area Networks,WLAN)中的站点(STATION,ST)，可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,PDA)设备、具有无线通信功能的手持设备、中继设备，计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备以及下一代通信系统，例如，第五代通信(Fifth-Generation,5G)网络中的终端设备或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)网络中的终端设备等。作为示例而非限定，在本申请实施例中，该终端设备110还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
在图1(b)的双连接/多连接场景中，至少两个RAN设备(如主RAN设备101和辅RAN设备102)与终端设备110通过三个小区进行通信，即RAN设备101及RAN设备102与终端设备110之间存在三条不同的链路，每条链路可以对应一个小区，该小区可以是主RAN设备101管理的主小区组(Master Cell Group,MCG)中的一个小区，也可以是辅RAN设备102管理的辅小区组(Secondary Cell Group,SCG)中的一个小区。在双连接/多连接场景中，终端设备和至少两个RAN设备管理的多个小区建立连接。在该至少两个RAN设备中有一个RAN设备称为主RAN设备，负责和该终端设备进行控制面数据和用户面数据的传输，该主RAN设备所管理的小区的集合称为MCG；在该至少两个RAN设备中除了主RAN设备外的其他RAN设备称为辅RAN设备，主要用于和该终端设备进行用户面数据的传输，一个辅RAN设备所管理的小区的集合称为SCG。为了便于说明，在本文以 下描述中，在终端设备和一个或多个RAN设备通信的情况下，都使用RAN设备描述该终端设备所通信的主RAN设备。应理解，RAN设备101-102和终端设备110进行通信所使用的至少两个小区以及每个小区的时频资源是由网络配置或主RAN设备101和终端设备110协商确定的。图1(b)所示三个小区的时频资源是不同的，在实际网络中，该三个小区的时频资源也可以是相同的，取决于系统的配置。
在图1(c)的多载波场景中，RAN设备101和终端设备110通过第一载波、第二载波和第三载波进行通信，即RAN设备101和终端设备110之间存在三条不同链路，每条链路对应一个载波。在多载波场景中，终端设备和一个RAN设备管理的至少两个小区建立连接，每个小区对应地使用一个载波。在该具有不同载波的至少两个小区中有一个小区称为主小区(Primary Cell,PCell)，负责和该终端设备进行控制面数据和用户面数据的传输；在该至少两个小区中除了主小区外的其他小区称为辅小区(Secondary Cell,SCell)，主要用于和该终端设备进行用户面数据的传输。应理解，在多载波场景中，载波和小区具有相同的含义，可以互换使用。RAN设备101和终端设备110进行通信所使用的多个载波/小区以及每个载波/小区的带宽是由网络配置或RAN设备101和终端设备110协商确定的。
在图1(d)的多Numerology场景中，RAN设备101和终端设备110通过第一Numerology、第二Numerology和第三Numerology进行通信，即RAN设备101和终端设备110之间存在三条不同的链路，每条链路对应一种Numerology。在多Numerology场景中，终端设备110使用至少两种Numerology和RAN设备101所管理的至少一个小区通信。典型地，不同的Numerology具有不同的子载波间隔和循环前缀(Cyclic Prefix,CP)长度；此外，不同的Numerology还可具有不同的发送时间间隔(Transmission Time Interval,TTI)。应理解，RAN设备101和终端设备110进行通信所使用的至少两种Numerology以及每种Numerology的资源配置是由网络配置或RAN设备101和终端设备110协商确定的。
在图1(e)的多输入多输出(Multiple-Input Multiple-Output,MIMO)场景中，RAN设备101和终端设备110通过第一天线端口、第二天线端口和第三天线端口进行通信，即RAN设备101和终端设备110之间存在三条不同的链路，每条链路对应一个天线端口。不同的天线端口具有不同的天线端口标识或序号。在MIMO场景中，终端设备110使用多个天线端口和RAN设备101所管理的至少一个小区通信。应理解，RAN设备101和终端设备110进行通信所使用的多个天线端口以及每个天线端口的资源配置是由网络配置或RAN设备101和终端设备110协商确定的。
通常地，对于终端设备110向RAN设备101或RAN设备101-102的数据传输，会经历以下流程：终端设备110的分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)层将来自应用的数据映射到数据无线承载(Data Radio Bearer,DRB)形成DRB数据并传输至无线链路控制(Radio Link Control,RLC)层，或将来自控制面的信令数据传输至RLC层，RLC层将DRB或信令数据映射到逻辑信道(Logical Channel,LC)并传输至媒体接入控制(Media Access Control,MAC)层，MAC层实现一个或多个LC的数据的复用并以一定大小的传输块为单位传输至物理层，进而发送至RAN设备101或RAN设备101-102。对于有高可靠性和低时延要求的业务，在终端设备110和RAN设备101或RAN设备101-102有至少两条链路存在的情况下，终端设备110通过在至少两条链路上重复传输数据。该重复传输是相同的数据在不同的链路上进行传输，通常也称作数据重复(data duplication)或包重复(packet duplication)，使得RAN设备101或RAN设备101-102可以在至少两条链路上收到终端设备110发送的相同的数据。RAN设备101或主RAN 设备101可进一步在PDCP层对接收到的重复的数据进行重复检测以获得所需的数据。下文中将以URLLC业务传输为例来描述本发明实施例的技术方案，应理解，本发明实施例的技术方案也可用于其他类型业务的传输，如移动宽带业务、机器通信业务等。
以下，结合图2至图8详细描述本申请的方法实施例。下面以具体的实施例对本申请的技术方案进行详细说明。下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例不再赘述。应理解，图2至图8是本申请实施例的通信方法的示意性流程图，示出了该方法的详细的通信步骤或操作，但这些步骤或操作仅是示例，本申请实施例还可以执行其它操作或者图2至图8中的各种操作的变形。此外，图2至图8中的各个步骤可以分别按照与图2至图8所呈现的不同的顺序来执行，并且有可能并非要执行图2至图8中的全部操作。
图2示出了本申请实施例的一种重复传输方法的流程示意图，该方法200可应用于图1所示的通信场景，包含如下步骤：
201、RAN设备向终端设备发送重复传输配置信息。
其中，该重复传输配置信息包括配置该终端设备的重复传输的模式和/或重复传输的内容。该配置重复传输的模式用于指示该终端设备是否进行重复传输或在至少两条链路上进行重复传输。该配置重复传输的内容用于指示该终端设备要进行重复传输的DRB数据和/或信令数据。对于终端设备要传输的URLLC业务数据，RAN设备可以根据网络的负载状况、终端设备的无线信道质量、以及网络中正在运行的URLLC业务性能等情况确定终端设备的重复传输配置。例如，在当前网络没有出现过载以及终端设备的无线信道质量不高的情况下，RAN设备可配置终端设备进行重复传输；在网路出现过载或终端设备的无线信道质量高的情况下，RAN设备可配置终端设备不进行重复传输。RAN设备还可以从其他网络设备(如核心网设备)获取终端设备重复传输的配置信息进而确定终端设备的重复传输配置。类似地，RAN设备还可根据网络中用户面数据和控制面数据各自的负载状况以及时延性能等配置终端设备对DRB数据和信令数据的重复传输。应理解，当该终端设备和至少两个RAN设备通信时，该RAN设备是至少两个RAN设备中的主RAN设备。
可选地，该重复传输配置信息指示该终端设备开启(激活)或关闭(去激活)重复传输。示例性地，RAN设备可以通过1比特的配置信息通知终端设备开启(激活)或关闭(去激活)重复传输。在终端设备和RAN设备之间存在两条链路的情况下，该RAN设备通知该终端设备开启重复传输，对应于该RAN设备配置该终端设备在该两条链路上进行重复传输。
可选地，该重复传输配置信息还配置该终端设备在指定数目的至少两条链路上进行重复传输。RAN设备可以配置终端设备在其与RAN设备通信的至少两条链路进行重复传输。例如，由于不同链路的无线信道质量可能有差异，RAN设备可以指定终端设备在至少两条链路中的无线信道质量高的部分链路上进行重复传输。示例性地，RAN设备可以通过多比特的配置信息通知终端设备在至少两条链路上进行重复传输。例如，RAN设备可以通过2比特的配置信息通知终端设备可以在至多四条链路上进行重复传输。此外，RAN设备还可以通过链路标识或链路序号等方式指示终端设备在指定的至少两条链路上进行重复传输。例如，RAN设备可以配置终端设备在第一链路标识和第二链路标识所对应的两条链路上进行重复传输。
可选地，该重复传输配置信息配置该终端设备对至少一个DRB的数据进行重复传输。例如，RAN设备可以将终端设备要进行重复传输的至少一个DRB的标识通过该重复传输配置信息发送给终端设备。此外，该重复传输配置信息还可配置该终端设备的至少一条信令的数据进行重复传输。示例性地，该信令可以是无线资源控制(Radio Resource Control,RRC)信令、也可以是PDCP 控制消息(例如PDCP状态报告、头压缩控制信息等)、还可以是RLC状态报告、以及MAC控制消息(如MAC控制元素(Control Element,CE))等。
202、终端设备根据重复传输配置进行重复传输。
在该步骤中，该终端设备根据从步骤201获取的重复传输配置信息对重复传输的方式和/或重复传输的内容进行配置，并根据该配置进行重复传输。
可选地，该终端设备根据自身在各条链路上的情况决策在至少两条链路上进行重复传输，或在RAN设备配置的至少两条链路上进行重复传输。例如，如果该RAN设备仅配置该终端设备开启重复传输或仅指示该终端设备在指定数目的至少两条链路上进行重复传输，则该终端设备可自行决策在所有链路中的哪几条链路上进行重复传输；如果该RAN设备配置了该终端设备进行重复传输的至少两条链路，则该终端设备在该指定的至少两条链路上进行重复传输。在一种重复传输的方式中，该终端设备向该RAN设备发送授权请求，并在接收该RAN设备发送的传输授权后根据该RAN设备授权的资源在至少两条链路上进行重复传输。在另一种重复传输的方式中，该终端设备不需要向该RAN设备发送授权请求而使用免授权(grant-free或grant-less)方式在至少两条链路上进行重复传输。该终端设备进行重复传输的方式可以有多种，本文对此不做限定。
可选地，在步骤202之前，该方法200还包括步骤203。在步骤203中，终端设备向RAN设备发送重复传输配置响应。该响应用于指示该终端设备成功接收该RAN设备发送的重复传输配置信息。
通过上述步骤，实现了RAN设备对终端设备的重复传输的配置，该终端设备根据该重复传输的配置进行重复传输，提高该终端设备数据传输的鲁棒性。
图3示出了本申请实施例的另一种重复传输方法的流程示意图，该方法300可应用于图1所示的通信场景，包含如下步骤：
301、RAN设备向终端设备发送RRC配置信令，该RRC配置信令用于配置该终端设备的重复传输。
其中，该RRC配置信令包括重复传输的DRB标识和/或信令类型。
可选地，如表1所示，该RRC配置信令指示标识为DRB-Identity的DRB是否需要进行重复传输；其中redundancy-indication是一个布尔变量，例如，当该值为1时开启(激活)该DRB的重复传输，当该值为0时关闭(去激活)该DRB的重复传输。进一步地，该RRC配置信令还可包括多个DRB-Identity以配置开启(激活)或关闭(去激活)多个DRB的重复传输。对于图1所示的各种场景，都可以使用DRB-Identity来指示需要进行重复传输的DRB。对于图1所示的各种场景，都可采用表1所示的方式来指示需要进行重复传输的DRB。
表1
Figure PCTCN2018083760-appb-000001
可选地，如表2所示，该RRC配置信令指示是否需要进行重复传输的信令(signaling)类型，例如RRC信令、PDCP控制消息、以及MAC控制消息等。示例性地，当表2中的RRC-redundancy-indication值为1时，表示开启(激活)RRC信令的重复传输，当 RRC-redundancy-indication值为0时，表示关闭(去激活)RRC信令的重复传输。类似地，PDCP-redundancy-indication用于指示开启(激活)或关闭(去激活)PDCP控制消息的重复传输；MAC-redundancy-indication用于指示开启(激活)或关闭(去激活)MAC控制消息的重复传输。对于图1(b)所示的场景，表2可用于指示对RRC信令和PDCP控制消息的重复传输；对于图1(c)-1(e)所示的场景，表2可用于指示对RRC信令、PDCP控制消息和MAC控制消息的重复传输。
表2
Figure PCTCN2018083760-appb-000002
可选地，该RRC配置信令还指示重复传输DRB数据和/或信令数据的至少两条链路。
示例性地，对于图1(c)所示的场景，表3(a)示出一个DRB数据在至少两个载波/小区上重复传输的配置信息，其中LogicalChannelIdentityList表示重复传输该DRB的至少两个LC的列表，该列表可以包括至少两个LC的标识(Identity,ID)，该列表所包括的LC ID的数目对应于重复传输该DRB数据的链路的数目。通过这种方式，RRC配置信令可以指示终端设备在指定数目的至少两条链路上进行重复传输，并由该终端设备自行决定在哪些小区进行重复传输。进一步地，表3(a)还可包括小区标识列表CellIdentityList，CellIdentityList表示LogicalChannelIdentityList中各LC数据所传输的小区标识的列表。应理解，在图1(c)所示的场景中，一个LC对应于一个小区。可选地，LogicalChannelIdentityList中第一个LC ID所对应的LC数据在CellIdentityList中第一个Cell ID所对应的小区上传输。通过这种方式，RRC配置信令可以指示终端设备在指定的至少两条链路上重复传输。特别地，当该列表只包括一个LC ID时，表明该RAN设备指示该终端设备仅在一条链路上传输。此外，该RRC配置信令还可包括至少两个DRB-Identity以配置至少两个DRB的数据的重复传输。类似地，对于图1(d)所示的场景，表3(b)示出一个DRB的数据在至少两种Numerology上重复传输的配置信息。在这种情况下，一个LC对应于一种Numerology，因此，Numerology-TTI-List用于表示LogicalChannelIdentityList中各LC数据所传输的Numerology标识或序号的列表。类似地，对于图1(e)所示的场景，表3(c)示出一个DRB的数据在至少两个天线端口上重复传输的配置信息。在这种情况下，一个LC对应于一个天线端口，因此，Antenna-port-List用于表示LogicalChannelIdentityList中各LC数据所传输的天线端口标识或序号的列表。应理解，上述LogicalChannelIdentityList、CellIdentityList、Numerology-TTI-List以及Antenna-port-List也可以有其他名称，只要能分别表示至少两个逻辑信道的标识的列表、至少两个小区的标识的列表、至少两种Numerology的标识的列表以及至少两个天线端口标识的列表即可，本文对此不作限定。
对于RRC配置信令指示信令重复传输的情况，相应地，可以将表3(a)至表3(c)中的DRB-redundancy和DRB-Identity分别替换成SRB-redundancy和SRB-Identity即可。
表3(a)
Figure PCTCN2018083760-appb-000003
Figure PCTCN2018083760-appb-000004
表3(b)
Figure PCTCN2018083760-appb-000005
表3(c)
Figure PCTCN2018083760-appb-000006
示例性地，对于图1(b)所示的场景，表4示出一个DRB数据在至少两个RAN设备所管理的至少两个小区上重复传输的配置信息，其中该终端设备可以和主RAN设备(如图1中的RAN设备101)管理的主小区组(Master Cell Group,MCG)中的至少一个小区进行通信，以及和辅RAN设备(如图1中的RAN设备102)管理的辅小区组(Secondary Cell Group,SCG)中的至少一个小区进行通信。其中MCGcellIdentityList标识重复传输该DRB数据的至少一个主RAN设备所管理的至少一个小区的标识的列表；SCGcellIdentitylist表示重复传输该DRB的至少一个辅RAN设备的至少一个小区的标识的列表。进一步地，该RRC配置信令还可包括多个DRB-Identity以配置多个DRB的重复传输。
表4
Figure PCTCN2018083760-appb-000007
Figure PCTCN2018083760-appb-000008
可选地，该RRC配置信令可以是RRC连接重配置(RRC Connection Reconfiguration)消息、RRC连接恢复(RRC Connection Resume)消息、或RRC连接重建(RRC Connection Reestablishment)消息等。
302、终端设备根据RRC配置信令进行重复传输。
在该步骤中，该终端设备根据从步骤301获取的RRC配置信令对重复传输的方式和/或重复传输的内容进行配置，并根据该配置进行重复传输。
可选地，该终端设备根据自身在各条链路上的情况决策在至少两条链路上进行重复传输，或在RAN设备配置的至少两条链路上进行重复传输。例如，如果该RAN设备仅配置该终端设备开启重复传输或仅指示该终端设备在指定数目的至少两条链路上进行重复传输，则该终端设备可自行决策在所有链路中的哪几条链路上进行重复传输；如果该RAN设备配置了该终端设备进行重复传输的至少两条链路，则该终端设备在该指定的至少两条链路上进行重复传输。在一种重复传输的方式中，该终端设备向该RAN设备发送授权请求，并在接收该RAN设备发送的传输授权后根据该RAN设备授权的资源在至少两条链路上进行重复传输。在另一种重复传输的方式中，该终端设备不需要向该RAN设备发送授权请求而使用免授权(grant-free或grant-less)方式在至少两条链路上进行重复传输。该终端设备进行重复传输的方式可以有多种，本文对此不做限定。
可选地，在步骤302之前，该方法300还包括步骤303。在步骤303中，终端设备向RAN设备发送RRC配置信令响应。该响应用于指示该终端设备成功接收该RAN设备发送的RRC配置信令。可选地，该RRC配置信令相应可以是RRC连接重配置完成(RRC Connection Reconfiguration Complete)消息、RRC连接恢复完成(RRC Connection Resume Complete)消息、或RRC连接重建完成(RRC Connection Reestablishment Complete)消息等。
通过上述步骤，实现了RAN设备通过RRC信令对终端设备的重复传输的配置，该终端设备根据该重复传输的配置进行重复传输，提高该终端设备传输的鲁棒性。
图4示出了本申请实施例的又一种重复传输方法的流程示意图，该方法400可应用于图1所示的通信场景，包含如下步骤：
401、RAN设备向终端设备发送PDCP配置信令，该PDCP配置信令用于配置该终端设备的重复传输。
其中，该PDCP配置信令可包括重复传输的DRB数据或信令无线承载(Signaling Radio Bearer,SRB)数据。
对于终端设备和RAN设备的通信过程中传输的一个DRB或SRB，在该终端设备和该RAN设备都有对应的一个PDCP实体在PDCP层处理相应的DRB数据或SRB数据。因此，针对任意一个DRB或SRB，该RAN设备可对应有一个PDCP配置信令来配置该DRB数据或SRB数据的重复传输。
可选地，该PDCP配置信令可采用图5所示的格式，其中比特位D/C用于表示该PDCP协议数据单元(Protocol Data Unit,PDU)为控制PDU还是数据PDU；PDU Type用于表示该PDCP PDU 的类型；比特位R用于表示预留位；比特位I用于重复传输指示。在本申请实施例中，对于重复传输的PDCP配置信令，可将D/C位设置为1，表示该PDCP PDU为控制消息；将PDU Type设置为一个多比特的数值(如110)以表示该PDCP PDU为重复传输控制消息，用于配置终端设备的该PDCP对应的DRB数据或SRB数据的重复传输；将重复传输指示I设置为1，表示重复传输该PDCP对应的DRB数据或SRB数据，将重复传输指示I设置为0，表示不重复传输该PDCP对应的DRB数据或SRB数据。对于图1所示的所有场景，都可采用本申请实施例的PDCP配置信令来配置终端设备的重复传输。
402、终端设备根据PDCP配置信令进行重复传输。
在该步骤中，该终端设备根据从步骤401获取的PDCP配置信令对重复传输的方式和/或重复传输的内容进行配置，并根据该配置进行重复传输。
可选地，该终端设备根据自身在各条链路上的情况决策在至少两条链路上进行重复传输。在一种重复传输的方式中，该终端设备向该RAN设备发送授权请求，并在接收该RAN设备发送的传输授权后根据该RAN设备授权的资源在至少两条链路上进行重复传输。在另一种重复传输的方式中，该终端设备不需要向该RAN设备发送授权请求而使用免授权(grant-free或grant-less)方式在至少两条链路上进行重复传输。该终端设备进行重复传输的方式可以有多种，本文对此不做限定。
通过上述步骤，实现了RAN设备通过PDCP信令对终端设备的重复传输的配置，该终端设备根据该重复传输的配置进行重复传输，提高该终端设备数据传输的鲁棒性。
图6示出了本申请实施例的又一种重复传输方法的流程示意图，该方法600可应用于图1所示的通信场景，包含如下步骤：
601、RAN设备向终端设备发送MAC配置信令，该MAC配置信令用于配置该终端设备的重复传输。
其中，该MAC配置信令可通过MAC CE发送给该终端设备。图7示出本发明实施例提供的一种通过MAC CE配置该终端设备的重复传输的示意图。该MAC CE包括MAC子头(subheader)、LC ID或逻辑信道组(Logical Channel Group,LCG)标识、以及重复传输指示。可选地，在图7(a)中，该RAN设备的MAC CE包括需要重复传输的LC数据所对应的LC ID以及相应的重复传输指示；其中MAC子头用于指示该MAC CE用于配置终端设备的重复传输。该重复传输指示可以是1比特的指示信息用以通知开启(激活)或关闭(去激活)该LC的重复传输，例如该重复传输指示值为1时表示该终端设备需要重复传输该LC数据，该重复传输指示值为0时表示该终端设备不需要重复传输该LC数据。此外，如图7(b)所示，该RAN设备的MAC CE还可包括需要重复传输的LCG数据所对应的LCG ID以及相应的重复传输指示。该重复传输指示用以指示开启(激活)或关闭(去激活)该LCG的数据。进一步地，图7(a)和7(b)中的重复传输指示还可采用多比特来指示对LC/LCG的数据的重复传输。示例性地，该重复传输指示为两比特且取值为00时，表示对该LC/LCG ID标识的LC/LCG的数据进行一次重复传输；该重复传输指示为两比特且取值为01时，表示对该LC/LCG ID标识的LC/LCG的数据进行两次重复传输；该重复传输指示为两比特且取值为10时，表示对该LCLC/LCG ID标识的LCLC/LCG的数据进行三次重复传输；该重复传输指示为两比特且取值为11时，表示对该LCLC/LCG ID标识的LCLC/LCG的数据进行四次重复传输。可选地，还可采用如图7(C)所示的MAC CE配置重复传输。在该方式下，MAC CE包括需要重复传输的LC的指示。示例性地，A0～A7为8比特指示；其中，Ai取值为1时，表明开启(激活)序号为i的LC ID所对应的 LC数据重复传输，Ai取值为0时，表明对应关闭(去激活)序号为i的LC ID所对应的LC数据的重复传输。对于图1所示的所有场景，都可采用本申请实施例的MAC配置信令来配置终端设备的重复传输。
602、终端设备根据MAC配置信令进行重复传输。
在该步骤中，该终端设备根据从步骤601获取的MAC配置信令对重复传输的方式和/或重复传输的内容进行配置，并根据该配置进行重复传输。
可选地，该终端设备根据自身在各条链路上的情况决策在至少两条链路上进行重复传输，或在RAN设备配置的至少两条链路上进行重复传输。例如，如果该RAN设备仅配置该终端设备开启重复传输或仅指示该终端设备在指定数目的至少两条链路上进行重复传输，则该终端设备可自行决策在所有链路中的哪几条链路上进行重复传输；如果该RAN设备配置了该终端设备进行重复传输的至少两条链路，则该终端设备在该指定的至少两条链路上进行重复传输。在一种重复传输的方式中，该终端设备向该RAN设备发送授权请求，并在接收该RAN设备发送的传输授权后根据该RAN设备授权的资源在至少两条链路上进行重复传输。在另一种重复传输的方式中，该终端设备不需要向该RAN设备发送授权请求而使用免授权(grant-free或grant-less)方式在至少两条链路上进行重复传输。该终端设备进行重复传输的方式可以有多种，本文对此不做限定。
进一步地，在图1(c)的场景中，对于RLC非确认模式(Unacknowledge Mode,UM)的数据的重复传输，由于多条链路上无线信道质量不一致，数据在各个载波上传输的速率不同，可能造成数据在部分无线信道质量差的载波上的传输无效，因此在重复传输过程中，该终端设备的PDCP实体可以从该RAN设备发送的PDCP状态报告中获取该终端设备在各条链路上进行重复传输的状态，例如在哪些链路上传输完成，在哪些链路上传输还未完成等，并由该终端设备的PDCP实体向该终端设备的RLC实体发送PDCP PDU发送状态报告，例如该PDCP PDU已发送成功等，由该终端设备的RLC实体根据该PDCP PDU发送状态报告丢弃无效的PDCP PDU，例如丢弃还未完成传输的RLC实体中的PDCP PDU。
通过上述步骤，实现了RAN设备通过MAC信令对终端设备的重复传输的配置，该终端设备根据该重复传输的配置进行重复传输，提高该终端设备的数据传输的鲁棒性。
图8示出了本申请实施例的又一种重复传输方法的流程示意图，该方法800可应用于图1所示的各种通信场景，包含如下步骤：
801、RAN设备向终端设备发送重复传输触发信息，该重复传输触发信息用于配置该终端设备进行重复传输的触发条件。
其中，该重复传输触发信息包括触发重复传输的至少一条链路的至少一种网络度量(metric)的阈值。可选地，该网络度量是一条链路的参考信号接收功率(Reference Signal Received Power,RSRP)、参考信号接收质量(Reference Signal Received Quality,RSRQ)、丢包率、或自动重传请求(Automatic Repeat Request,ARQ)的重传次数等。示例性地，如表5所示，该重复传输触发信息指示触发标识为Link-ID的链路的重复传输的RSRP/RSRP阈值。例如，RSRP_threshold/RSRQ_threshold表示当该链路的RSRP/RSRQ测量值低于或等于RSRP_threshold/RSRQ_threshold时触发该链路数据的重复传输；当该链路的RSRP/RSRQ测量值高于RSRP_threshold/RSRQ_threshold时不重复传输该链路数据。应理解，该链路数据的重复传输可以是该链路的DRB的数据的重复传输，也可以是该链路的信令数据的重复传输。示例性地，对于图1(b)和图1(c)场景，该Link-ID可以是Cell ID，对应该终端设备连接的一个小区；对于 图1(d)场景，该Link-ID可以是子载波间隔/循环前缀长度指示，对应该终端设备连接的一种Numerology；对于图1(e)场景，该Link-ID可以是信道状态信息参考信号(Channel State Information-Reference Signal,CSI-RS)所对应的天线端口标识或端口序号。此外，该Link-ID还可使用LogicalChannelIdentity、SCGcellIdentity、MCGcellIdentity、Numerology-TTI-ID、Antenna-port-ID等标识来区分不同的链路。应理解，上述Cell ID、子载波间隔/循环前缀长度指示、SCGcellIdentity、MCGcellIdentity、Numerology-TTI-ID、Antenna-port-ID也可以有其他名称，只要能表示逻辑信道的标识、小区的标识、Numerology的标识以及天线端口标识即可，本文对此不作限定。
表5
Figure PCTCN2018083760-appb-000009
示例性地，如表6所示，该重复传输触发信息指示触发标识为DRB-Identity的DRB的重复传输的丢包率的阈值。例如，当标识为DRB-Identity的DRB的PDCP状态报告中的丢包率高于Missing-threshold时触发该DRB的数据的重复传输，当该丢包率不低于Missing-threshold时不重复传输该DRB的数据。对于图1所示的各种场景，都可采用本申请实施例的方式来指示触发重复传输DRB的数据。对于触发SRB的数据的重复传输的情况，类似地，将表6中的DRB-Identity替换成SRB-Identity即可。
表6
Figure PCTCN2018083760-appb-000010
示例性地，如表7所示，该重复传输触发信息指示触发标识为DRB-Identity的DRB的重复传输的ARQ重传次数的阈值。例如，当标识为DRB-Identity的DRB中的一个标识为LogicalChannelIdentity的LC的ARQ重传次数高于ARQ-threshold时触发该LC数据的重复传输，当该ARQ重传次数不低于ARQ-threshold时不重复传输该LC的数据。对于图1所示的各种场景，都可采用本申请实施例的方式来指示触发重复传输DRB的数据。对于触发SRB的数据的重复传输的情况，类似地，将表7中的DRB-Identity替换成SRB-Identity即可。
表7
Figure PCTCN2018083760-appb-000011
Figure PCTCN2018083760-appb-000012
802、终端设备根据重复传输触发信息进行重复传输。
在该步骤中，该终端设备根据从步骤801获取的重复传输触发信息对测量的网络度量进行比较，例如，将测量的一条链路的RSRP/RSRQ值与该重复传输触发信息中相应的RSRP_threshold/RSRQ_threshold比较，将一个PDCP状态报告中的丢包率与该重复传输触发信息中相应的Missing-threshold比较，将一个LC的ARQ重传次数与该重复传输触发信息中相应的ARQ-threshold比较，并在满足至少一个触发条件时对该链路的数据进行重复传输。
可选地，在一种重复传输的方式中，该终端设备根据自身在各条链路上的情况决策在至少两条链路上进行重复传输，该终端设备向RAN设备发送授权请求，并在接收该RAN设备发送的传输授权后根据该RAN设备授权的资源在至少两条链路上进行重复传输。在另一种重复传输的方式中，该终端设备还可以不需要向该RAN设备发送授权请求而使用免授权(grant-free或grant-less)方式在至少两条链路上进行重复传输。该终端设备进行重复传输的方式可以有多种，本文对此不做限定。
可选地，该终端设备根据自身在各条链路上的情况决策在至少两条链路上进行重复传输，或在RAN设备配置的至少两条链路上进行重复传输。例如，如果该RAN设备仅配置该终端设备开启重复传输或仅指示该终端设备在指定数目的至少两条链路上进行重复传输，则该终端设备可自行决策在所有链路中的哪几条链路上进行重复传输；如果该RAN设备配置了该终端设备进行重复传输的至少两条链路，则该终端设备在该指定的至少两条链路上进行重复传输。在一种重复传输的方式中，该终端设备向该RAN设备发送授权请求，并在接收该RAN设备发送的传输授权后根据该RAN设备授权的资源在至少两条链路上进行重复传输。在另一种重复传输的方式中，该终端设备不需要向该RAN设备发送授权请求而使用免授权(grant-free或grant-less)方式在至少两条链路上进行重复传输。该终端设备进行重复传输的方式可以有多种，本文对此不做限定。
可选地，在步骤802之前，该方法800还包括步骤803。在步骤803中，终端设备向RAN设备发送重复传输触发响应。该响应用于指示该终端设备成功接收该RAN设备发送的重复传输触发信息。
应理解，为了方便描述，本文中将RAN设备向终端设备发送的信息称为重复传输配置信息或重复传输触发信息。但是，该接入网设备向终端设备发送的信息还可以有其他的名称，例如数据重复传输配置信息、包重复传输配置信息、数据重复传输触发信息、包重复传输触发信息等，本文并不以此限定该接入网设备向终端设备发送的信息的具体信息名称，可以理解的是，这里的配置信息并不是一个专有名词，在实际应用中也有可能会采用其它的叫法，但是都不离本专利申请的实质。此外，本文中的RAN设备和终端设备交互的上述信息以及各种信令(如RRC配置信令、PDCP配置信令和MAC配置信令)可以携带在任意名称的消息中，本文对此不作限定。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务 器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。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专利申请的范围。
上文结合图2至图8详细描述了本申请的方法实施例，下文结合图9至图12，详细描述本申请的装置实施例。应理解，装置实施例与方法实施例相互对应，类似的描述可以参照方法实施例。值得注意的是，装置实施例可以与上述方法配合使用，也可以单独使用。
图9示出了本申请实施例的终端设备900的示意性框图，该终端设备900可以对应(例如，可以配置于或本身即为)上述方法200中描述的终端设备，或上述方法300中描述的终端设备，或上述方法400中描述的终端设备，或上述方法600中描述的终端设备，或上述方法800中描述的终端设备。该终端设备900可以包括：处理器901和收发器902，处理器901和收发器902通信连接。可选地，该终端设备900还包括存储器903，存储器903与处理器901通信连接。可选地，处理器901、存储器903和收发器902可以通信连接，该存储器903可以用于存储指令，该处理器901用于执行该存储器903存储的指令，以控制收发器902发送信息或信号。其中，处理器901和收发器902分别用于执行上述方法200中的终端设备，或上述方法300中的终端设备，或上述方法400中的终端设备，或上述方法600中的终端设备，或上述方法800中的终端设备，所执行的各动作或处理过程。这里，为了避免赘述，省略其详细说明。
图10示出了本申请实施例的终端设备1000的另一示意性框图，该终端设备1000可以对应(例如，可以配置于或本身即为)上述方法200中描述的终端设备，或上述方法300中描述的终端设备，或上述方法400中描述的终端设备，或上述方法600中描述的终端设备，或上述方法800中描述的终端设备。该终端设备1000可以包括：接收模块1001、处理模块1002和发送模块1003，处理模块1002分别和接收模块1001和发送模块1003通信相连。该终端设备1000中各模块或单元分别用于执行上述方法200中的终端设备，或上述方法300中的终端设备，或上述方法400中的终端设备，或上述方法600中的终端设备，或上述方法800中的终端设备，所执行的各动作或处理过程。这里，为了避免赘述，省略其详细说明。
图11示出了本申请实施例的RAN设备1100的示意性框图，该RAN设备1100可以对应(例如，可以配置于或本身即为)上述方法200中描述的RAN设备，或上述方法300中描述的RAN设备，或上述方法400中描述的RAN设备，或上述方法600中描述的RAN设备，或上述方法800中描述的RAN设备。该RAN设备1100可以包括：处理器1101和收发器1102，处理器1101和收发器1102通信连接。可选地，该RAN设备1100还包括存储器1103，存储器1103与处理器1101通信连接。可选地，处理器1101、存储器1103和收发器1102可以通信连接，该存储器1103可以用于存储指令，该处理器1101用于执行该存储器1103存储的指令，以控制收发器1102发送信息或信号。其中，处理器1101和收发器1102分别用于执行上述方法200中的RAN设备，或上述方法300中的RAN设备，或上述方法400中的RAN设备，或上述方法600中的RAN设备，或上述方法800中的RAN设备，所执行的各动作或处理过程。这里，为了避免赘述，省略其详细说明。
图12示出了本申请实施例的RAN设备1200的另一示意性框图，该RAN设备1200可以对应(例如，可以配置于或本身即为)上述方法200中描述的RAN设备，或上述方法300中描述的RAN设 备，或上述方法400中描述的RAN设备，或上述方法600中描述的RAN设备，或上述方法800中描述的RAN设备。该RAN设备1200可以包括：接收模块1201、处理模块1202和发送模块1203，处理模块1202分别和接收模块1201和发送模块1203通信相连。该RAN设备1200中各模块或单元分别用于执行上述方法200中的RAN设备，或上述方法300中的RAN设备，或上述方法400中的RAN设备，或上述方法600中的RAN设备，或上述方法800中的RAN设备，所执行的各动作或处理过程。这里，为了避免赘述，省略其详细说明。
应理解，本申请的装置实施例中的处理器(901、1101)可以是中央处理器(Central Processing Unit，简称CPU)，网络处理器(Network Processor，简称NP)，硬件芯片或者其任意组合。上述硬件芯片可以是专用集成电路(Application-Specific Integrated Circuit，简称ASIC)，可编程逻辑器件(Programmable Logic Device，简称PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(Complex Programmable Logic Device，简称CPLD)，现场可编程逻辑门阵列(Field-Programmable Gate Array，简称FPGA)，通用阵列逻辑(Generic Array Logic，简称GAL)或其任意组合。
本申请的装置实施例中的存储器(903、1103)可以是易失性存储器(Volatile Memory)，例如随机存取存储器(Random-Access Memory，简称RAM)；也可以是非易失性存储器(Non-Volatile Memory)，例如只读存储器(Read-Only Memory，简称ROM)，快闪存储器(Flash Memory)，硬盘(Hard Disk Drive，简称HDD)或固态硬盘(Solid-State Drive，简称SSD)；还可以是上述种类的存储器的组合。
在本申请所提供的几个实施例中，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，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。
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，在本专利申请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。
功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本专利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或者该技术方案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中，包含若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本专利申请各个实施例方法的全部或部分步骤。而前述的存储介质包含：U盘、移动硬盘、只读存储器(ROM，简称Read-Only Memory)、随机存取存储器(RAM，简称Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上，仅为本专利申请的具体实施方式，但本专利申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本专利申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本专利申请的保护范围之内。因此，本专利申请的保护范围应以权利要求的保护范围为准。

Claims (24)

  1. 一种重复传输的方法，其特征在于，包括：
    终端设备接收接入网RAN设备发送的重复传输配置信息，所述重复传输配置信息包括配置所述终端设备的重复传输的模式和/或重复传输的内容；
    所述终端设备根据所述重复传输配置信息进行重复传输。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备通过以下配置信令中的至少一种接收所述RAN设备发送的重复传输配置信息：无线资源控制配置信令、分组数据汇聚协议配置信令、以及媒体接入控制配置信令。
  3. 一种重复传输的方法，其特征在于，包括：
    接入网RAN设备向所述终端设备发送重复传输配置信息，所述重复传输配置信息包括配置所述终端设备的重复传输的模式和/或重复传输的内容；
    所述RAN设备接收所述终端设备的重复传输。
  4. 根据权利要求3所述的方法，其特征在于，所述RAN设备通过以下配置信令中的至少一种向所述终端设备发送所述重复传输配置信息：无线资源控制配置信令、分组数据汇聚协议层配置信令、以及媒体接入控制层配置信令。
  5. 根据权利要求1或权利要求3所述的方法，其特征在于，所述配置终端设备的重复传输的模式用于指示所述终端设备是否进行重复传输或在至少两条链路上进行重复传输。
  6. 根据权利要求1或权利要求3所述的方法，其特征在于，所述配置终端设备的重复传输的内容用于指示所述终端设备要进行重复传输的数据无线承载数据和/或信令数据。
  7. 根据权利要求5所述的方法，其特征在于，所述指示终端设备在至少两条链路上进行重复传输，还包括：
    指示所述终端设备在指定数目的至少两条链路上进行重复传输；或
    指示所述终端设备在指定的至少两条链路上行进行重复传输。
  8. 根据权利要求5所述的方法，其特征在于，所述至少两条链路对应于所述终端设备通过以下方式中的至少一种与所述RAN设备进行通信：至少两个逻辑信道、至少两个小区、至少两个载波、至少两种物理层参数、以及至少两个天线端口。
  9. 根据权利要求6所述的方法，其特征在于，所述信令数据包括以下数据中的至少一种：无线资源控制信令数据、分组数据汇聚协议层控制消息、以及媒体接入控制层控制消息。
  10. 根据权利要求2或4所述的方法，其特征在于，所述分组数据汇聚协议配置信令包括协议数据单元类型和重复传输指示；所述协议数据单元类型用于指示所述分组数据汇聚协议配置信令用于配置所述终端设备的重复传输；所述重复传输指示用于指示是否重复传输所述分组数据汇聚层配置信令所对应的分组数据汇聚协议层的数据无线承载数据或信令无线承载数据。
  11. 根据权利要求2或4所述的方法，其特征在于，所述媒体接入控制配置信令包括媒体接入控制层控制元素；所述媒体接入控制层控制元素包括媒体接入控制子头、逻辑信道标识或逻辑信道组标识、以及重复传输指示；所述媒体接入控制子头用于指示所述媒体接入控制层控制元素用于配置所述终端设备的重复传输；所述重复传输指示用于指示是否重复传输所述逻辑信道标识或逻辑信道组标识所对应的逻辑信道数据或逻辑信道组数据。
  12. 一种终端设备，其特征在于，包括：
    接收模块，用于接收接入网RAN设备发送的重复传输配置信息，所述重复传输配置信息包括配置所述终端设备的重复传输的模式和/或重复传输的内容；
    处理模块，用于根据所述重复传输配置信息处理重复传输；
    发送模块，用于发送重复传输的内容。
  13. 根据权利要求12所述的终端设备，其特征在于，所述终端设备通过以下配置信令中的至 少一种接收所述RAN设备发送的重复传输配置信息：无线资源控制配置信令、分组数据汇聚协议配置信令、以及媒体接入控制配置信令。
  14. 一种接入网RAN设备，其特征在于，包括：
    发送模块，用于向终端设备发送重复传输配置信息，所述重复传输配置信息包括配置所述终端设备的重复传输的模式和/或重复传输的内容；
    处理模块，用于确定所述终端设备的重复传输的配置；
    接收模块，用于接收所述终端设备发送的重复传输的内容。
  15. 根据权利要求14所述的RAN设备，其特征在于，所述RAN设备通过以下配置信令中的至少一种向所述终端设备发送所述重复传输配置信息：无线资源控制配置信令、分组数据汇聚协议层配置信令、以及媒体接入控制层配置信令。
  16. 根据权利要求12所述的终端设备或权利要求14所述的RAN设备，其特征在于，所述配置终端设备的重复传输的模式用于指示所述终端设备是否进行重复传输或在至少两条链路上进行重复传输。
  17. 根据权利要求12所述的终端设备或权利要求14所述的RAN设备，其特征在于，所述配置终端设备的重复传输的内容用于指示所述终端设备要进行重复传输的数据无线承载的数据和/或信令的数据。
  18. 根据权利要求16所述的终端设备或RAN设备，其特征在于，所述指示终端设备在至少两条链路上进行重复传输，还包括：
    指示所述终端设备在指定数目的至少两条链路上进行重复传输；或
    指示所述终端设备在指定的至少两条链路上行进行重复传输。
  19. 根据权利要求16所述的终端设备或RAN设备，其特征在于，所述至少两条链路对应于所述终端设备通过以下方式中的至少一种与所述RAN设备进行通信：至少两个逻辑信道、至少两个小区、至少两个载波、至少两种物理层参数、以及至少两个天线端口。
  20. 根据权利要求17所述的终端设备或RAN设备，其特征在于，所述信令数据包括以下数据中的至少一种：无线资源控制信令数据、分组数据汇聚协议层控制消息、以及媒体接入控制层控制消息。
  21. 根据权利要求13或15所述的终端设备或RAN设备，其特征在于，所述分组数据汇聚协议配置信令包括协议数据单元类型和重复传输指示；所述协议数据单元类型用于指示所述分组数据汇聚协议配置信令用于配置所述终端设备的重复传输；所述重复传输指示用于指示是否重复传输所述分组数据汇聚层配置信令所对应的分组数据汇聚协议层的数据无线承载数据或信令无线承载数据。
  22. 根据权利要求13或15所述的终端设备或RAN设备，其特征在于，所述媒体接入控制配置信令包括媒体接入控制层控制元素；所述媒体接入控制层控制元素包括媒体接入控制子头、逻辑信道标识或逻辑信道组标识、以及重复传输指示；所述媒体接入控制子头用于指示所述媒体接入控制层控制元素用于配置所述终端设备的重复传输；所述重复传输指示用于指示是否重复传输所述逻辑信道标识或逻辑信道组标识所对应的逻辑信道数据或逻辑信道组数据。
  23. 一种计算机可读存储介质，其特征在于，包括指令，当其在计算机上运行时，使得计算机执行如权利要求1-2或权利要求5-11中任一项所述的方法。
  24. 一种计算机可读存储介质，其特征在于，包括指令，当其在计算机上运行时，使得计算机执行如权利要求3-4或权利要求5-11中任一项所述的方法。
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