WO2021179827A1 - 一种通信的方法及装置 - Google Patents

一种通信的方法及装置 Download PDF

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Publication number
WO2021179827A1
WO2021179827A1 PCT/CN2021/073987 CN2021073987W WO2021179827A1 WO 2021179827 A1 WO2021179827 A1 WO 2021179827A1 CN 2021073987 W CN2021073987 W CN 2021073987W WO 2021179827 A1 WO2021179827 A1 WO 2021179827A1
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Prior art keywords
data unit
data
protocol layer
data units
units
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PCT/CN2021/073987
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English (en)
French (fr)
Inventor
卓义斌
刘菁
朱元萍
戴明增
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华为技术有限公司
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Publication of WO2021179827A1 publication Critical patent/WO2021179827A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H04L1/0007Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0076Distributed coding, e.g. network coding, involving channel coding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/06Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/06Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H04W28/065Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method and device.
  • the fifth-generation mobile communication system puts forward more stringent requirements for various performance indicators of the network. For example, service transmission reliability puts forward higher requirements.
  • the embodiments of the present application provide a communication method and device for proposing a network encoding and decoding method and a transmission method of a data unit on an air interface.
  • a communication method in a first aspect, includes a first protocol layer and a second protocol layer, and the second protocol layer is a lower protocol layer of the first protocol layer.
  • the second protocol layer may receive a third data unit, and the third data unit includes a second protocol layer header and a second data unit.
  • the second protocol layer may determine whether the second protocol layer header of the third data unit includes first indication information, where the first indication information is used to indicate that the third data unit is a network coded data unit . If the first indication information is included, the second protocol layer may send the second data unit to the first protocol layer. If the first indication information is not included, the second protocol layer may send the second data unit to the upper protocol layer of the first protocol layer. Then, the first protocol layer may perform network decoding on a plurality of the second data units to obtain a plurality of first data units.
  • the first device serves as the decoding end, and the second protocol layer may decide whether to send the data unit to The first protocol layer is to perform network decoding, or send to the upper protocol layer of the first protocol layer, without network decoding.
  • a network decoding method and the transmission method of data units between different protocol layers are proposed.
  • the first protocol layer header of the second data unit includes, but is not limited to, at least one of the following: a type of network coding, vector information of network coding, and used to indicate the second
  • the data unit is the second indication information of the network coded data unit.
  • the vector information of the network coding is used to indicate the first data unit information corresponding to the second data unit. That is to indicate which first data unit the second data unit is obtained by performing network coding.
  • the header of the second protocol layer of the third data unit further includes path identification information. If multiple third data units are received, there will usually be at least two third data units in the multiple third data units that have different path identification information. For the third data unit in the same group (belonging to the same block or object, or belonging to the same bearer) to perform offload routing, the probability of data decoding can be increased, and the reliability of data transmission can be improved.
  • the first protocol layer may also determine at least one fourth data unit based on a plurality of the first data units. Further, the at least one fourth data unit may also be sent to an upper protocol layer of the first protocol layer.
  • the first protocol layer may adopt any of the following methods: to perform the step of determining at least one fourth data unit based on a plurality of the first data units:
  • the first protocol layer composes a fourth data unit from a plurality of the first data units
  • the first protocol layer composes a plurality of the first data units into a fifth data unit; and after deleting supplementary information in the fifth data unit, it is used as a fourth data unit; or
  • the first protocol layer composes a plurality of the first data units into a fifth data unit; divides the fifth data unit into at least two fourth data units; or
  • the first protocol layer composes a plurality of the first data units into a fifth data unit; and after deleting supplementary information in the fifth data unit, it is divided into at least two fourth data units; or
  • the first protocol layer uses each of the plurality of first data units as a fourth data unit; or
  • the first protocol layer deletes each first data unit of the plurality of first data units as a fourth data unit after deleting corresponding supplementary information;
  • the first protocol layer regards part of the first data units of the plurality of first data units as a fourth data unit respectively, and after deleting the corresponding supplementary information of the remaining part of the first data units respectively, they are regarded as one The fourth data unit.
  • the multiple first data units are formed into a fifth data unit or a fourth data unit, and multiple first data units may be cascaded (that is, connected end to end) as a fifth data unit or fourth data unit.
  • Data unit it is also possible to interleave a plurality of the first data units as a fifth data unit or a fourth data unit.
  • the first device may receive sixth indication information, and the sixth indication information may instruct the encoding end to determine a manner of determining multiple first data units according to at least one fourth data unit. Therefore, the first protocol layer of the first device can, based on the sixth indication information, infer which of the above seven methods is used to perform the step of determining at least one fourth data unit based on the plurality of first data units.
  • the header of the fourth data unit includes length information; the length information is the length of the fourth data unit or the length of the data field in the fourth data unit.
  • the length of the fourth data unit can be obtained according to the length of the data field and the length of the packet header. In this way, the first protocol layer can determine whether to delete the supplementary information to obtain the fourth data unit according to the length of the fourth data unit. Or according to the length of the fourth data unit, each fourth data unit is divided into the fifth data unit.
  • the header of the fourth data unit further includes: third indication information, where the third indication information is used to indicate whether the header of the fourth data unit includes the length information.
  • the decoding end may decide whether to parse the length information field according to the third indication information. When it is determined that the length information is included, the field of the length information can be parsed for subsequent use. When it is determined that the length information is not included, the field of the length information does not need to be parsed, which can reduce the processing amount.
  • the first device receives fifth indication information, where the fifth indication information is used to indicate the length of each fourth data unit in the plurality of fourth data units.
  • the length of each fourth data unit may be expressed by the length value, or the start position of each fourth data unit of the plurality of fourth data units in the fifth data unit and / Or the end position to indicate the length of each fourth data unit.
  • the first protocol layer when the first protocol layer divides the fifth data unit into at least two fourth data units, the first protocol layer may be based on each of the fourth data units. The length of the unit divides the fifth data unit into at least two fourth data units.
  • the first protocol layer may The length of the fourth data unit divides the data unit from which the supplementary information has been deleted from the fifth data unit into at least two fourth data units.
  • the first protocol layer after the first protocol layer deletes part or all of the first data units in the plurality of first data units with corresponding supplementary information respectively, they can be used as a fourth data unit. According to the length of the fourth data unit, the fourth data unit is extracted from the first data unit.
  • the first device receives fourth indication information, where the fourth indication information is used to indicate the length of the supplementary information included in the first data unit.
  • the first protocol layer of the first device deletes part of the first data unit or all of the first data units respectively as a fourth data unit after deleting the corresponding supplementary information, it can delete the first data unit according to the fourth instruction information.
  • the first data unit may be referred to as a source symbol
  • the second data unit is an encoding symbol
  • the third data unit is a network coding data unit
  • the fourth data unit is a non-network coding Data unit.
  • a communication method in a second aspect, includes a first protocol layer and a second protocol layer, and the second protocol layer is a lower protocol layer of the first protocol layer.
  • the first protocol layer of the second device performs network coding on multiple first data units to obtain multiple second data units.
  • the second protocol layer of the second device adds a second protocol layer header to each second data unit to obtain each corresponding third data unit.
  • the second protocol layer header of the third data unit is It includes: first indication information, where the first indication information is used to indicate that the third data unit is a network coded data unit.
  • the second device serves as an encoding terminal, and the first protocol layer performs network encoding on the data unit, and sends the network encoded data unit to the second protocol layer.
  • the second protocol layer adds first indication information for indicating that the data unit is a network coded data unit to the encoded data unit.
  • the first protocol layer header of the second data unit includes, but is not limited to, at least one of the following: a type of network coding, vector information of network coding, and used to indicate the second
  • the data unit is the second indication information of the network coding data unit; the network coding vector information is used to indicate the first data unit information corresponding to the second data unit. That is to indicate which first data unit the second data unit is obtained by performing network coding.
  • the second protocol layer is for each third data unit of the plurality of third data units, based on the second indication information, in the header of the second protocol layer Add path identification information.
  • the multiple third data units usually have at least two different path identification information in the third data units. For the third data unit in the same group (belonging to the same block or object, or belonging to the same bearer) to perform offload routing, the probability of data decoding can be increased, and the reliability of data transmission can be improved.
  • the first protocol layer determines a plurality of the first data units according to at least one fourth data unit, where the fourth data unit may be a slave of the first protocol layer. It is received by the upper protocol layer of the first protocol layer.
  • the first protocol layer may adopt any of the following methods: to perform the step of determining multiple first data units based on at least one fourth data unit:
  • the first protocol layer determines a plurality of the first data units according to one of the fourth data units;
  • the first protocol layer adds supplementary information to one of the fourth data units as a fifth data unit, and determines a plurality of the first data units according to the fifth data unit;
  • the first protocol layer cascades at least two fourth data units to form a fifth data unit; and determines a plurality of the first data units according to the fifth data unit; or
  • the first protocol layer cascades at least two fourth data units and adds supplementary information to serve as a fifth data unit; and determines a plurality of the first data units according to the fifth data unit; or
  • the first protocol layer uses each of the at least two fourth data units as one of the first data units;
  • the first protocol layer adds corresponding supplementary information to each fourth data unit in at least two fourth data units, respectively, as one first data unit;
  • the first protocol layer adds corresponding supplementary information to part of the fourth data units in at least two fourth data units respectively as one of the first data units, and uses the remaining part of the fourth data units as the first data units.
  • the "determination" in determining the plurality of first data units according to the fourth data unit and the plurality of first data units according to the fifth data unit can be direct segmentation or interleaving segmentation. .
  • the second device can send sixth indication information that may be sent, and the sixth indication information may indicate to the second device which of the above-mentioned 7 modes is used to execute according to at least one fourth data unit, The step of determining a plurality of said first data units. Therefore, the decoding end infers the manner of determining at least one fourth data unit based on the plurality of the first data units according to the sixth indication information.
  • the first protocol layer determines the first data unit based on the fourth data unit received within the set time length; or the first protocol layer determines the first data unit based on n fourth data units The first data unit, where the sum of the lengths of the n fourth data units is greater than or equal to the set data unit length (for example, the length of the data unit), and the sum of the lengths of n-1 fourth data units is less than the set data unit length Or the first protocol layer determines the first data unit according to the set threshold m of the number of fourth data units.
  • the time length, the data unit length, and the fourth data unit number threshold m may be set or configured separately for each bearer in the second device, and different bearer settings or The configuration can be the same or different.
  • Each user bearer has different quality of service (QoS) requirements. For example, different user bearers have different requirements for delay, some user bearers have higher requirements for delay, and some user bearers have lower requirements for delay. For services with high latency requirements, the waiting time cannot be too long. Therefore, the set time length, data unit length, and the fourth data unit number threshold m can be smaller, so that the first protocol layer can receive a smaller number of the first protocol layer. After four data units, you can start network coding.
  • QoS quality of service
  • the set time length, data unit length, and the fourth data unit number threshold m can be larger.
  • the network device may be uniformly set or configured for all the bearers of the second device. In this case, all the bearer settings on the second device are the same.
  • the unified configuration can reduce the signaling overhead required for configuration.
  • the header of the fourth data unit includes length information; the length information is the length of the fourth data unit or the length of the data field in the fourth data unit. According to the length of the data field and the length of the packet header, the length of the fourth data unit can be obtained. In this way, the decoding end can determine whether to delete the supplementary information to obtain the fourth data unit according to the length of the fourth data unit. Or according to the length of the fourth data unit, each fourth data unit is divided into the fifth data unit.
  • the header of the fourth data unit further includes: third indication information, where the third indication information is used to indicate whether the header of the fourth data unit includes the length information.
  • the decoding end may decide whether to parse the length information field according to the third indication information. When it is determined that the length information is included, the field of the length information can be parsed for subsequent use. When it is determined that the length information is not included, the field of the length information does not need to be parsed, which can reduce the processing amount.
  • the second device sends fifth indication information, where the fifth indication information is used to indicate the length of each fourth data unit in the plurality of fourth data units.
  • the length of each fourth data unit may be expressed by the length value, or the start position of each fourth data unit of the plurality of fourth data units in the fifth data unit and / Or the end position to indicate the length of each fourth data unit.
  • the second device sends fourth indication information, where the fourth indication information is used to indicate the length of the supplementary information included in the first data unit. So that the decoder can delete part of the first data unit or all of the first data unit as a fourth data unit after deleting the corresponding supplementary information, and then delete the first data unit according to the fourth instruction information. Supplementary information corresponding to the length.
  • the first data unit may be referred to as a source symbol
  • the second data unit is an encoding symbol
  • the third data unit is a network coding data unit
  • the fourth data unit is a non-network coding Data unit.
  • a communication device in a third aspect, has the function of realizing the foregoing first aspect and any possible implementation of the first aspect.
  • These functions can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more functional modules corresponding to the above-mentioned functions.
  • a communication device in a fourth aspect, has the function of realizing the foregoing second aspect and any possible implementation of the second aspect.
  • These functions can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more functional modules corresponding to the above-mentioned functions.
  • a communication device may be the first device in the foregoing method embodiment, or a chip set in the first device.
  • the device includes a transceiver, a processor, and optionally, a memory.
  • the memory is used to store computer programs or instructions
  • the processor is respectively coupled with the memory and the transceiver.
  • the processor executes the computer programs or instructions
  • the device executes the first aspect and the first aspect through the transceiver. A method executed by the first device in any possible implementation.
  • a communication device may be the second device in the foregoing method embodiment, or a chip set in the second device.
  • the device includes a transceiver, a processor, and optionally, a memory.
  • the memory is used to store computer programs or instructions
  • the processor is respectively coupled with the memory and the transceiver.
  • the processor executes the computer programs or instructions
  • the device executes the second aspect and the second aspect through the transceiver. The method executed by the second device in any possible implementation.
  • a computer program product comprising: computer program code, when the computer program code runs on a computer, the computer executes the first aspect and any one of the possible aspects of the first aspect. Implementation of the method executed by the first device.
  • a computer program product comprising: computer program code, when the computer program code is run on a computer, the computer executes any of the above-mentioned second aspect and any possible aspect of the second aspect Implementation of the method executed by the second device.
  • the present application provides a chip system that includes a processor and a memory, and the processor and the memory are electrically coupled; the memory is used to store computer program instructions; the processor , Used to execute part or all of the computer program instructions in the memory. When the part or all of the computer program instructions are executed, they are used to implement the first aspect and any possible implementation method of the first aspect. The function of the device.
  • the chip system may further include a transceiver, and the transceiver is configured to send a signal processed by the processor or receive a signal input to the processor.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present application provides a chip system that includes a processor and a memory, and the processor and the memory are electrically coupled; the memory is used to store computer program instructions; the processor , Used to execute part or all of the computer program instructions in the memory, when the part or all of the computer program instructions are executed, used to implement the second aspect and the second aspect of any possible implementation method of the second aspect The function of the device.
  • the chip system may further include a transceiver, and the transceiver is configured to send a signal processed by the processor or receive a signal input to the processor.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • a computer-readable storage medium stores a computer program.
  • the computer program When the computer program is executed, the first aspect and any possible implementation of the first aspect are determined by the first aspect.
  • a method executed by a device is executed.
  • a computer-readable storage medium stores a computer program.
  • the computer program When the computer program is run, the second aspect and any possible implementation of the second aspect are determined by the first The method executed by the second device is executed.
  • a communication system includes: a first device that executes the method in any one of the foregoing first aspect and the first aspect, and executes the foregoing second aspect and the second aspect Any possible implementation of the second device of the method.
  • FIG. 1 is a schematic diagram of a communication system architecture provided in an embodiment of this application.
  • Figure 2a is a schematic diagram of an application scenario architecture provided in an embodiment of the application.
  • Figure 2b is a schematic diagram of a protocol layer provided in an embodiment of the application.
  • FIG. 3 is a schematic diagram of communication of a network coding of a second device provided in an embodiment of this application;
  • Fig. 4a, Fig. 4b, and Fig. 4c are respectively a network coding method provided in an embodiment of the application;
  • FIG. 5 is a schematic diagram of communication for network decoding of a first device provided in an embodiment of this application.
  • Fig. 6, Fig. 7, Fig. 8, and Fig. 9 are communication devices respectively provided in the embodiments of the application.
  • LTE long term evolution
  • WiMAX worldwide interoperability for microwave access
  • 5th generation fifth generation
  • 5G new radio access technology
  • NR new radio access technology
  • FIG. 1 is a schematic diagram of a communication system architecture to which this application applies, including: a terminal device 11, a wireless backhaul device 12, an access network device 13, and a core network device 14.
  • the terminal device 11 is connected to the wireless backhaul device 12 in a wireless manner, the terminal device 11 is connected to the access network device 13 through one or more wireless backhaul devices 12, and the terminal device 11 can also be directly connected to the access network device 13 via wireless Ways are connected.
  • the access network device 13 is connected to the core network device 14 in a wireless or wired manner.
  • the core network device 14 and the access network device 13 can be separate and different physical devices, or they can integrate the functions of the core network device 14 and the logical functions of the access network device 13 on the same physical device, or one
  • the physical equipment integrates part of the functions of the core network equipment 14 and part of the functions of the access network equipment 13.
  • the terminal device can be a fixed location, or it can be movable. This application does not limit the number of core network equipment 14, access network equipment 13, wireless backhaul equipment 12, and terminal equipment 11. There may be multiple transmission paths between the terminal device 11 and the access network device 13.
  • a transmission path includes multiple nodes, for example, a terminal device, a wireless access network device, and one or more wireless backhaul devices.
  • Terminal equipment which can also be called user equipment (UE), mobile station (MS), mobile terminal (MT), terminal, etc.
  • terminal devices include handheld devices with wireless connection functions, vehicle-mounted devices, and Internet of Things devices.
  • terminal devices can be: mobile phones (mobile phones), tablets, notebook computers, handheld computers, mobile Internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart grids Wireless terminals, wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, etc.
  • the wireless backhaul device can provide backhaul services for its child nodes, and its child node can be a terminal device or another wireless backhaul device.
  • the wireless backhaul device may be a relay node (RN), an integrated access and backhaul (IAB) node, or other devices that can provide a wireless relay function.
  • the IAB node can be composed of a mobile terminal (MT) part and a distributed unit (DU) part.
  • MT mobile terminal
  • DU distributed unit
  • the (radio access network, (R)AN) is a sub-network of an operator's network, and an implementation system between service nodes and terminal equipment in the operator's network.
  • the terminal device To access the operator's network, the terminal device first passes through the RAN, and then can be connected to the service node of the operator's network through the RAN.
  • the RAN device in this application is a device that provides wireless communication functions for terminal devices, and the RAN device is also called an access network device.
  • the RAN equipment in this application includes but is not limited to: next-generation base station (generation node B, gNB) in 5G, evolved node B (evolved node B, eNB), radio network controller (RNC), node B (node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved node B, or home node B, HNB), baseband unit (baseBand unit, BBU), transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), mobile switching center, etc.
  • next-generation base station generation node B, gNB
  • 5G evolved node B (evolved node B, eNB), radio network controller (RNC), node B (node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved node B, or home node B
  • the access network device can also be an IAB donor (IAB donor) device, which can be an access network element with a complete base station function, or a centralized unit (CU) and a distributed unit (distributed unit). unit, DU) A separate access network element, the IAB host device is connected to the core network device serving the terminal device, and provides a wireless backhaul function for the IAB node.
  • IAB donor CU the centralized unit of the IAB host device
  • donor CU the centralized unit
  • the distributed unit (IAB donor DU) of the IAB host device is referred to as donor DU for short.
  • the donor CU may be in a form in which the control plane (CP) and the user plane (UP) are separated.
  • the CU may be composed of one CU-CP and one or more CU-UPs.
  • the IAB donor may also be referred to as a donor node (donor node) or a donor base station (Donor gNodeB, DgNB).
  • the service data of the terminal device can be transmitted by an IAB node connected to an IAB donor (IAB donor) device through a wireless backhaul link.
  • the access network device 13, the wireless backhaul device 12, and the terminal device 11 can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on the water; they can also be deployed on aircraft, balloons, and satellites in the air .
  • the embodiment of the present application does not limit the application scenarios of the wireless access network device 13, the wireless backhaul device 12, and the terminal device 11.
  • the wireless link between devices can communicate through a licensed spectrum, or communicate through an unlicensed spectrum, or communicate through a licensed spectrum and an unlicensed spectrum at the same time.
  • the wireless link between devices can communicate through a frequency spectrum below 6 gigahertz (gigahertz, GHz), or communicate through a frequency spectrum above 6 GHz, and can also communicate using a frequency spectrum below 6 GHz and a spectrum above 6 GHz at the same time.
  • the embodiment of the present application does not limit the spectrum resources used by the wireless link.
  • an example diagram of an application scenario architecture is proposed, where the second device 22 is used as an encoding device, and the first device 21 is used as a decoding device.
  • the first device 21 includes a first protocol layer a and a second protocol layer b located below the first protocol layer a.
  • the second device 22 includes a first protocol layer c and a second protocol layer d located under the first protocol layer c.
  • the first protocol layer c of the second device 22 can perform network coding on the data unit and send the network coded data unit to the second protocol layer d, and the second protocol layer d sends the network coded data unit, which can be sent to The decoding end can also be sent to the next protocol layer.
  • the second protocol layer b of the first device 21 can receive network coded data units, and send the received network coded data units to the first protocol layer a, and the first protocol layer a can perform network coded data units decoding.
  • the second protocol layer b of the first device or the second protocol layer d of the second device may be, for example, an air interface protocol layer used for routing of network coded data units transmitted over an air interface.
  • the first protocol layer a of the first device 21 may also have the function of performing network encoding on the data unit by the first protocol layer c of the second device 22 described above, and the second protocol layer b of the first device may also The second protocol layer d of the second device 22 described above may have the function of sending network coded data units.
  • the second protocol layer d of the second device 22 may also have the function of receiving network coded data units of the second protocol layer b of the first device 21 described above, and the first protocol layer c of the second device may also have the above description
  • the first protocol layer a of the first device 21 performs the network decoding function on the network-encoded data unit.
  • the first device 21 and the second device 22 may be different devices, and the first device 21 receives the network coded data unit sent by the second device 22.
  • the second device 22 may be the wireless access device 13, that is, the function of network coding is located on the wireless access device 13.
  • the first device 21 may be the wireless backhaul device 12 or the terminal device 11. That is, the function of network decoding is located on the wireless backhaul device 12 or the terminal device 11.
  • the second device 22 may be the wireless backhaul device 12 or the terminal device 11, that is, the network coding function is located on the wireless backhaul device 12 or the terminal device 11.
  • the first device 21 may be the wireless access device 13, that is, the function of network decoding is located on the wireless access device 13.
  • the wireless access device may be, for example, a gNB-CU (for example, IAB donor CU) or a gNB-DU (for example, IAB donor DU) or gNB.
  • a gNB-CU for example, IAB donor CU
  • a gNB-DU for example, IAB donor DU
  • gNB gNode B
  • the first device 21 and the second device 22 may also be two different terminal devices 11.
  • the first protocol layer a in the first device 21 or the first protocol layer c in the second device 22 may be a newly defined protocol layer or protocol sublayer with network encoding and/or decoding functions.
  • the first protocol layer is defined as: network coding (NC) layer.
  • the NC layer is located in the packet data convergence protocol (PDCP) layer and backhaul adaptation protocol (backhaul adaptation protocol). , BAP) between the layers.
  • PDCP packet data convergence protocol
  • BAP backhaul adaptation protocol
  • the existing BAP layer may have at least one of the following capabilities: adding routing information (Routing information) that can be recognized by the wireless backhaul node to the data packet, and based on the recognition by the wireless backhaul node
  • the routing information performs routing selection, adds identification information related to the quality of service (QoS) requirements that can be identified by the wireless backhaul node for the data packet, and executes the data packet on the multi-segment chain containing the wireless backhaul node QoS mapping on the road, adding data packet type indication information for data packets, and sending flow control feedback information to nodes with flow control capabilities.
  • the related explanation of the existing BAP layer can also refer to the relevant description of the BAP layer in the 3rd generation partnership project (3GPP) technical standard (TS) 38.340V1.0.0 version.
  • 3GPP 3rd generation partnership project
  • the NC layer here may also be called a codec layer, a network codec layer, or other names, which are not limited in this application. It is also possible to add a sub-layer protocol layer to the original PDCP layer for network encoding and/or decoding, and the first protocol layer a or the first protocol layer c may be a sub-layer protocol layer of the PDCP layer. It is also possible to add a sub-layer protocol layer to the original BAP layer for network encoding and/or decoding, and the first protocol layer may be a sub-layer protocol layer of the BAP layer. Similarly, the second protocol layer b in the first device 21 or the second protocol layer d in the second device 22 may be a BAP layer or a sub-layer protocol layer of the BAP layer.
  • the first protocol layer and the second protocol layer located below the first protocol layer may both be a sub-layer protocol layer of the BAP.
  • the second protocol layer b in the first device 21 and the second protocol layer d in the second device 22 may also be the lower protocol layers of the BAP layer, for example, the radio link control (RLC) layer, media access Control sub-layer protocol (media access control, MAC) layer, etc.
  • the second protocol layer b in the first device 21 and the second protocol layer d in the second device 22 may also be a newly defined protocol layer used to implement the routing function of the data unit on the wireless link, and the second The name of the protocol layer is not limited in this application.
  • Network coding The coding end can perform random linear combination of the source data to generate any number of network coded data, and the decoding end can restore the source data as long as it receives enough network coded data, so the data transmission process occurs The loss of a certain data will not affect the decoding performance.
  • Network coding can reduce the retransmission delay of data packets in the transmission process, and can improve the reliability of data transmission through multi-path transmission.
  • Network decoding is the inverse process of network coding.
  • the "and/or” in this application describes the association relationship of the associated objects, and means that there can be three kinds of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B alone exists. This situation.
  • a and/or B which can mean: A alone exists, A and B exist at the same time, and B alone exists. This situation.
  • the character “/” generally indicates that the associated objects before and after are in an "or” relationship.
  • the multiple involved in this application refers to two or more.
  • the word "exemplary” is used to mean serving as an example, illustration, or illustration. Any embodiments or implementations described as “examples” in this application should not be construed as being more preferred or advantageous than other embodiments or implementations. Rather, the term example is used to present the concept in a concrete way.
  • This application proposes a network encoding/decoding method and transmission method of a data unit on an air interface.
  • the scheme will be introduced in detail in conjunction with the drawings.
  • the features or contents marked by dotted lines in the drawings can be understood as optional operations or optional structures of the embodiments of this application.
  • the fourth data unit can be understood as a normal data packet received from a higher layer
  • the first data unit can be understood as a source symbol
  • the second data unit can be understood as an encoding symbol
  • the third data unit can be understood as a network Encoding data unit
  • the fifth data unit can be understood as a data object (object) or block (block).
  • the process of determining the source symbol according to the ordinary data packet, or first determining the data object (object) or block (block) according to the ordinary data packet, and then determining the source symbol according to the data object (object) or block (block) can also be understood as a network Part of the encoding.
  • FIG. 3 a schematic diagram of a communication process in which a second device performs network coding is provided.
  • the second device in the example of FIG. 3 may be the second device 22 in FIG. 2a.
  • the first protocol layer and the second protocol layer of the second device are the first protocol layer c and the second protocol layer d in FIG. 2a, respectively. Specifically include the following steps:
  • Step 301 The first protocol layer of the second device determines multiple first data units according to at least one fourth data unit.
  • the fourth data unit is received by the first protocol layer from an upper protocol layer of the first protocol layer.
  • the fourth data unit may be a PDCP service data unit (SDU); or when the first protocol layer is located below the PDCP layer A protocol layer, for example, in the network coding layer NC in Figure 2b, the fourth data unit may be NC SDU or PDCP protocol data unit (protocol data unit, PDU); or when the first protocol layer is located in the In the next protocol layer of the PDCP layer, for example, in the BAP layer, the fourth data unit may be a BAP SDU or a PDCP PDU.
  • SDU PDCP service data unit
  • the length of the first data unit can be set in the second device, and it can also be set: how to determine the fourth data unit and then determine the first data unit.
  • information such as the length of time, or the number threshold m, or the length threshold of data objects or blocks can be set, and the first data unit can be determined by determining which fourth data units are in a group based on this information.
  • the first protocol layer determines the first data unit based on the fourth data unit received within the set time length.
  • the set time length is 5ms, or 30ms, etc.
  • the first protocol layer takes a set time length (such as 10ms, 20ms, etc.) as a cycle, and the fourth data unit received in each cycle is a group, and according to this group of fourth data units, multiple first data are determined unit.
  • the first protocol layer determines the first data unit according to n fourth data units, where the sum of the lengths of the n fourth data units is greater than or equal to the set data unit length, n-1 The sum of the lengths of the fourth data unit is less than the set data unit length.
  • the first protocol layer determines the first data unit according to a set threshold m of the number of fourth data units.
  • the first protocol layer uses m consecutively received fourth data units as a group to determine the first data unit. Or a group of m+1 fourth data units received continuously is used to determine the first data unit.
  • the foregoing time length, data unit length, or the fourth data unit number threshold m may be set or configured by the network device for each bearer in the second device, and each bearer may set at least one of these three pieces of information ,
  • the information of different bearer settings can be the same or different.
  • the foregoing time length, data unit length, or the fourth data unit number threshold m may also be set by the network device for all bearers of the second device together, and all bearer settings have the same information. Through unified configuration, the signaling overhead required for configuration can be reduced.
  • the foregoing time length, and/or data unit length, and/or the fourth data unit number threshold m may be set by the access network device 13 in FIG. 1, if the second device is the access network device 12 (for example, Base station or IAB host node), set it by itself. If the second device is the wireless backhaul device 12 or the terminal device 11 in FIG. 1, the access network device configures the second device with the above-mentioned time length, and/ Or the data unit length, and/or the fourth data unit number threshold m.
  • the access network device 12 for example, Base station or IAB host node
  • Each user bearer has different quality of service (QoS) requirements. For example, different user bearers have different requirements for delay, some user bearers have higher requirements for delay, and some user bearers have lower requirements for delay.
  • QoS quality of service
  • the waiting time cannot be too long. Therefore, the set time length, data unit length, and the fourth data unit number threshold m can be smaller, so that the first protocol layer can receive a smaller number of the first protocol layer. After four data units, you can start network coding. For services with low latency requirements, you can wait for a longer period of time before performing network coding. Therefore, the set time length, data unit length, and the fourth data unit number threshold m can be larger.
  • the first protocol layer determines multiple first data units according to one fourth data unit.
  • the first protocol layer may add supplementary information (padding) to one fourth data unit as a fifth Data unit (object or block), and multiple first data units are determined according to the fifth data unit.
  • the length of the supplementary information is determined according to the length of the fourth data unit and the length of the first data unit. For example, if the length of the fourth data unit is 100bit, the length of the first data unit set in the second device is 30bit, the length of the supplementary information is 20bit, and the fourth data unit is added with supplementary information to obtain the fifth data unit If the length is 120bit, it can be equally divided into 4 first data units. For another example, the length of the fourth data unit is 80bit, the length of the first data unit set in the second device is 40bit, and the fourth data unit can be equally divided into two first data units, so the fourth data unit does not need to be supplemented information.
  • Manner 3 The first protocol layer cascades (connects end to end) at least two fourth data units to form a fifth data unit; and determines a plurality of first data units according to the fifth data unit.
  • Manner 4 After the first protocol layer cascades (connects end to end) at least two fourth data units, they cannot be equally divided into multiple first data units. Then, the first protocol layer cascades at least two fourth data units and adds supplementary information to serve as a fifth data unit; and determines a plurality of first data units according to the fifth data unit. As shown in Figure 4a, the first protocol layer determines four first data units according to four PDCP PDUs (fourth data units). PDCP PDU1 to PDCP PDU4 are connected end to end and added with compensation information (padding) as a fifth data unit, and then the fifth data unit is divided into 4 equal parts to obtain 4 first data units. Perform network coding according to the four first data units to obtain multiple second data units.
  • a plurality of the first data units are determined according to the fourth data unit, and in the methods 2, methods 3, and 4, a plurality of the first data units are determined according to the fifth data unit, in “ “Determined” can be direct segmentation or interleaving segmentation.
  • the direct segmentation here can mean segmentation as shown in Figure 4a.
  • Figure 4a shows an example of direct division into direct equal division. In this application, the division may also be unequal division.
  • the fourth data unit or the fifth data unit is 150 bits.
  • the 150 bits can be directly segmented into three 50-bit first data units.
  • the 150 bit may be first divided into 5 30-bit data units, and the 5 30-bit data units may be divided into 3 10-bit data units. Combine the first 10-bit data unit of each of the 5 30-bit data units into a 50-bit first data unit, and combine the second 10-bit data unit of each of the 5 30-bit data units into another 50-bit data unit The first data unit, and so on, can form three 50-bit first data units.
  • the first protocol layer uses each of the at least two fourth data units as one of the first data units.
  • the first protocol layer adds corresponding supplementary information to each fourth data unit in at least two fourth data units, respectively, as one first data unit.
  • the first protocol layer adds corresponding supplementary information to part of the fourth data unit in at least two fourth data units, respectively, as one of the first data units, and the remaining part of the fourth data unit The units respectively serve as one of the first data units.
  • the first protocol layer determines four first data units according to four PDCP PDUs (fourth data units).
  • PDCP PDU1 and PDCP PDU3 can be respectively used as a first data unit, and PDCP PDU2 and PDCP PDU4 need to be added with supplementary information respectively, and then respectively be used as a first data unit.
  • the decoding end and the second device may predetermine that one of the above methods 1 to 7 is used to determine a plurality of first data units based on at least one fourth data unit. Or the second device itself chooses to use one of the above methods 1 to 7 to determine multiple first data units based on at least one fourth data unit.
  • the second device may send sixth indication information, and the sixth indication information is used to instruct the second device to use one of the above methods 1 to 7 to determine according to at least one fourth data unit Multiple first data units.
  • the second device sends sixth indication information to the decoding end, where the sixth indication information is used to instruct the second device to use which of the above seven methods to perform the determination based on at least one fourth data unit. Steps of the first data unit. Then, after receiving the sixth indication information, the decoding end can use a manner corresponding to the second device to determine at least one fourth data unit based on the plurality of first data units.
  • Step 301 is an optional step. Step 301 can be combined with the existing technology alone as an embodiment of the present application, and step 301 can also be combined with the following steps 302-303 as an embodiment of the present application. Of course, the following steps 302-303 can also be combined with the prior art as an embodiment of the present application.
  • Step 302 The first protocol layer of the second device performs network coding on multiple first data units to obtain multiple second data units. And send the second data unit to the second protocol layer.
  • the first protocol layer of the second device performs network coding on the first data unit to obtain multiple network coded data units, and adds header information of the first protocol layer to each network coded data unit, Get the second data unit.
  • the first protocol layer header of the second data unit includes but is not limited to at least one of the following: network coding type, network coding vector information, and used to indicate that the second data unit is network coding data The second indication information of the unit.
  • the second indication information used to indicate that the second data unit is a network coded data unit can occupy 1 bit. For example, when the 1bit is 0, it indicates that the data unit where the second indication information is located is a network coded data unit, and the 1 bit is At 1:00, it indicates that the data unit where the second indication information is located is not a network coded data unit. Or when the 1bit is 1, it indicates that the data unit where the second indication information is located is a network coded data unit, and when the 1bit is 0, it indicates that the data unit where the second indication information is located is not a network coded data unit.
  • the type of network coding may be, for example, fountain codes, or random liner network coding (RLNC), etc.
  • one or more first data units are coded into second data units (coding symbols), and the vector information of the network coding can be used to indicate the second data unit corresponding to the second data unit.
  • a data unit information that is, the second data unit is based on which first data units are network-coded. Based on which first data unit the second data unit is network-coded, it depends on the algorithm implementation of the network coding.
  • the vector information of the network coding may indicate in the form of a bitmap which first data units are network-coded according to which the second data unit is. For example: during network coding, there are 5 first data units (source symbols), and each second data unit (coding symbol) is network coded according to one or more of the 5 first data units Become.
  • bitmap 10010 is used to indicate that the second data unit is network-encoded according to the first and fourth first data units.
  • the coefficient of the bitmap may also be a positive integer greater than or equal to 1, for example, when the bitmap is 20010, it is used to indicate that the second data unit is first multiplied by 2 based on the first data unit and then summed.
  • the fourth first data unit is network-encoded.
  • the multiple second data units (coding symbols) generated by the network coding include both the first data unit (source information or source symbol) obtained by network coding alone.
  • it also includes performing network coding based on multiple first data units to obtain a second data unit (here, performing network coding based on multiple first data units to obtain a second data unit, which may be referred to as a repair symbol) Condition.
  • network coding is performed according to 4 first data units to obtain 6 second data units.
  • the first 4 second data units among the 6 second data units are obtained by a single first data unit network encoding, and the bitmaps corresponding to the first 4 second data units are: 1000, 0100, 0010, and 0001, respectively.
  • network encoding is performed on multiple first data units.
  • the bitmap may be, for example, 1001, 1100, 0011, etc.
  • the coding vector information of the second data unit may also be the serial number of the first data unit, that is, the number of the first data unit.
  • the second data unit is obtained by network coding from one first data unit alone, and the second data unit is obtained by network coding according to multiple first data units.
  • the header formats of the two second data units can be different, for example, the former can be It is identified by the sequence number of the source symbol, and the latter can be identified by the vector information of the network encoding. Therefore, the header of the second data unit can also be added with indication information to indicate that the second data unit is networked by a first data unit. Obtained by encoding, or obtained by performing network encoding on the basis of multiple first data units.
  • the algorithm of network coding is fixed, and the vector information of network coding is stipulated by the protocol.
  • the protocol stipulates that the vector information of network coding can be derived from the number of the coding symbol. That is, the coding symbol is the number of coding symbols in a group of coding symbols, and the decoding end can correctly decode the source symbols corresponding to the coding symbols.
  • the network coding vector information is carried in the header of the first protocol layer of the network coding data unit (such as the second data unit), the second device can perform network coding flexibly.
  • the network coding algorithm may be configured by the access network device.
  • the function of network coding can be located on the CU, and at this time it belongs to the algorithm implementation behavior of the base station.
  • the DU can perform network coding according to the algorithm configured by the CU.
  • the function of network coding is located on the MT part of the terminal device or IAB node, and the MT of the terminal device or IAB node can perform network coding according to the algorithm configured by the CU.
  • Step 303 The second protocol layer of the second device receives a plurality of second data units from the first protocol layer, and adds a second protocol layer header to each of the second data units to obtain each corresponding The third data unit.
  • the third data unit is, for example, a radio link control RLC layer data unit.
  • the second protocol layer header of the third data unit includes: first indication information, and the first indication information is used to indicate the third data unit or the second
  • the data unit is a network coded data unit.
  • the second device sends each third data unit to the decoding end, and after receiving the data unit by the second protocol layer of the decoding end, it delivers it to the upper protocol layer of the second protocol layer.
  • One way is to submit ordinary (non-network coded) data units to the upper protocol layer of the first protocol layer without network decoding.
  • Another way is to submit the network-encoded third data unit to the first protocol layer for network decoding.
  • the second protocol layer of the decoder is the BAP layer
  • the first protocol layer is the NC layer
  • the upper protocol layer of the first protocol layer is the PDCP layer.
  • the second protocol layer submits the non-network coded data unit to the PDCP layer, and the network coded third data unit to the NC layer.
  • the second protocol layer (BAP layer) to recognize whether the data unit is a network-encoded third data unit or a non-network-encoded data unit.
  • the second protocol layer (BAP layer or the lower protocol layer of BAP) of the second device (encoding end) respectively adds to the second protocol layer header of each third data unit: used to indicate the third
  • the second data unit in the data unit or the third data unit is the first indication information of the network coded data unit.
  • the first indication information needs to always exist.
  • the second protocol layer of the decoding end After the second protocol layer of the decoding end receives the third data unit, it can determine to send the third data unit to the third data unit according to the first indication information included in the header of the second protocol layer of the third data unit.
  • the first protocol layer performs network decoding instead of the upper protocol layer of the first protocol layer.
  • offloading can be performed to increase the probability of data decoding and ensure the reliability of data transmission.
  • the offloading route may be to send the third data unit in the same group through different RLC bearers (the RLC bearer may include the RLC entity and the corresponding logical channel).
  • the first protocol layer of the second device may add second indication information used to indicate that the second data unit is a network coded data unit in the header of the second data unit, and the second protocol layer is determining a data If the unit does not include the second indication information, when the data unit is a non-network coded data unit, the second protocol layer normally performs routing.
  • a data unit includes the second indication information
  • the data unit is a network-coded data unit
  • the second protocol layer needs to shunt multiple data units in the group where the data unit is located.
  • the second protocol layer adds the packet header of the second protocol layer to the second data unit to obtain the third data unit.
  • the second protocol layer may add path identification information to the header of the second protocol layer based on the second indication information for each third data unit of the plurality of third data units.
  • the path identification information in data unit 1, data unit 2 and data unit 4 is the same, and the path information in data unit 3 is the same as that in other data units.
  • the path information in each data unit is different.
  • the path identification information in data unit 1 and data unit 4 is the same, and the path information in data unit 1 and data unit 3 is the same, and is different from the path information in several other data units.
  • the path information in data unit 1, data unit 3, and data unit 4 are all different, and the path information in data unit 2 and data unit 1 are the same.
  • the process of network encoding performed by the second device is described above, and the process of network decoding performed by the first device is described next.
  • the second device may send the network-encoded third data unit to the first device, and the first device performs network decoding on the third data unit, and the first device is different from the second device.
  • FIG. 5 a schematic diagram of a communication process in which a first device performs network decoding is provided.
  • the first device in the example of FIG. 5 may be the first device 21 in FIG. 2a.
  • the first protocol layer and the second protocol layer of the first device are the first protocol layer a and the second protocol layer b in FIG. 2a, respectively. Specifically include the following steps:
  • Step 501 The second protocol layer of the first device receives the third data unit.
  • the third data unit includes a second protocol layer header and a second data unit.
  • the third data unit is received from a device other than the first device, or received from a lower protocol layer of the second protocol layer.
  • the data packet of which protocol layer the third data unit belongs to may depend on which protocol layer the lower protocol layer of the second protocol layer is.
  • the third data unit may be a radio link control layer data unit, such as a radio link control layer service data unit (radio link control service data unit, RLC SDU).
  • RLC SDU radio link control service data unit
  • the third data unit may also be a media access control layer data unit, such as a media access control layer service data unit (MAC SDU).
  • MAC SDU media access control layer service data unit
  • Step 502 The second protocol layer determines whether the second protocol layer header of the third data unit includes first indication information, where the first indication information is used to indicate that the third data unit is network coding Data unit. If yes, go to step 503; if not, go to step 504.
  • the header of the second protocol layer of the third data unit includes path identification information.
  • Step 503 The second protocol layer sends the second data unit to the first protocol layer.
  • the first protocol layer header of the second data unit includes but is not limited to at least one of the following: network coding type, network coding vector information, and used to indicate that the second data unit is a network Encoding the second indication information of the data unit.
  • network coding type e.g., a network coding vector information
  • the function of each item of information can be referred to the description at step 302 in FIG. 3 above.
  • Step 504 The second protocol layer sends the second data unit to the upper protocol layer of the first protocol layer.
  • Step 505 The first protocol layer performs network decoding on the plurality of second data units to obtain a plurality of first data units.
  • the network decoding algorithm used is the same as the network coding algorithm used when the encoder end performs network coding.
  • Step 506 The first protocol layer determines at least one fourth data unit according to the plurality of first data units.
  • the first protocol layer of the first device may also send the at least one fourth data unit to an upper protocol layer of the first protocol layer.
  • the second device in FIG. 3 is used as the encoding end.
  • step 301 7 methods for determining multiple first data units (source symbols) based on at least one fourth data unit (ordinary data packet) have been introduced.
  • the first device when used as a decoding end, it also has 7 corresponding ways to determine at least one fourth data unit (ordinary data packet) based on a plurality of the first data units (source symbols).
  • the first protocol layer composes multiple first data units into a fourth data unit.
  • the first protocol layer composes a plurality of the first data units into a fifth data unit; and after deleting supplementary information in the fifth data unit, it is used as a fourth data unit.
  • the first protocol layer composes a plurality of the first data units into a fifth data unit; and divides the fifth data unit into at least two fourth data units.
  • the first protocol layer composes a plurality of the first data units into a fifth data unit; and after the supplementary information is deleted from the fifth data unit, the fifth data unit is divided into at least two fourth data units.
  • the multiple first data units are formed into a fifth data unit or a fourth data unit, and multiple first data units may be cascaded (that is, connected end to end) as a fifth data unit or fourth data unit.
  • Data unit it is also possible to interleave a plurality of the first data units as a fifth data unit or a fourth data unit.
  • network decoding is performed according to multiple second data units to obtain 4 first data units. After cascading the four first data units and deleting the supplementary information, they are divided into four fourth data units (PDCP PDU1 to PDCP PDU4).
  • PDCP PDU1 to PDCP PDU4 fourth data units
  • the decoding end can determine the sequence of the multiple first data units based on the prior art, and then the multiple first data units can be connected end to end as one data unit.
  • an example of interleaving a plurality of the first data units as a fifth data unit or a fourth data unit is provided.
  • the decoding end can infer from bottom to top.
  • the three 50-bit first data units are divided into five 10-bit data units, and then the first 10 bits of the three first data units are connected end to end to form the first data unit.
  • a 30-bit data unit connects the second 10 bits of each of the three first data units end to end to form a second 30-bit data unit, and so on, to form five 30-bit data units. Then connect these 5 30-bit data units end to end to obtain a 150-bit fifth data unit or a fourth data unit.
  • Manner 5 The first protocol layer uses each of the plurality of first data units as a fourth data unit.
  • the first protocol layer deletes each first data unit of the plurality of first data units as a fourth data unit after deleting corresponding supplementary information.
  • Manner 7 After the first protocol layer uses part of the first data unit among the plurality of first data units as a fourth data unit, and deletes the corresponding supplementary information for the remaining parts of the first data unit, respectively, As a fourth data unit.
  • network decoding is performed to obtain 4 first data units.
  • the first first data unit and the third first data unit are respectively used as the fourth data unit (PDCP PDU1).
  • PDCP PDU3 After the second data unit needs to delete supplementary information, it is used as a fourth data unit (PDCP PDU2).
  • the fourth data unit is used as a fourth data unit (PDCP PDU4) after the supplementary information is deleted.
  • the header of the fourth data unit may include length information; the length information may be the length of the fourth data unit, or the length of the data field in the fourth data unit. length.
  • the length of the packet header is fixed, and the length of the fourth data unit can be obtained according to the length of the data field and the length of the packet header. This example can be applied to any of the above 7 methods.
  • the decoding end may determine, according to the length of the fourth data unit, that the multiple first data units in mode 1 are cascaded and directly used as a fourth data unit. After cascading a plurality of the first data units in way 2 and deleting the supplementary information, it is used as a fourth data unit.
  • the decoding end needs to restore a fifth data unit to each fourth data unit (normal data packet, such as PDCP PDU).
  • the fourth data unit does not carry the length information of the fourth data unit. Therefore, the decoding end cannot recover every single fourth data unit.
  • the first protocol layer of the first device adopts the above method 3: dividing the fifth data unit into at least two fourth data units, or after adopting the above method 4: deleting supplementary information in the fifth data unit
  • the fifth data unit can be accurately split into each individual fourth data unit according to the length of each fourth data unit.
  • the fourth data unit of the present application includes length information.
  • the header of the fourth data unit further includes: third indication information, where the third indication information is used to indicate whether the header of the fourth data unit includes the length information.
  • 1 bit may be used to indicate whether the length information is included. For example, when 1 bit is 1, it means that the length information is included, and when 1 bit is 0, it means that the length information is not included. Or, when 1bit is 1, it means that the length information is not included, and when 1bit is 0, it means that the length information is included.
  • the decoding end may decide whether to parse the length information field according to the third indication information. When it is determined that the length information is included, the field of the length information can be parsed for subsequent use. When it is determined that the length information is not included, the field of the length information does not need to be parsed, which can reduce the processing amount.
  • the encoding end may also notify the decoding end of the length of each fourth data unit by means of a notification message.
  • the second device may also send fifth indication information to the decoding end, where the fifth indication information is used to indicate the length of each fourth data unit in the plurality of fourth data units.
  • the length of the fourth data unit may be a length value, or may be represented by the start position and/or end position of each fourth data unit in the fifth data unit.
  • the first device serves as a decoding end, it may also receive the fifth indication information.
  • the fifth data unit is divided into at least two fourth data units, or when the above method 4: deletes the supplement in the fifth data unit
  • the length of each fourth data unit (length value, or the start position and/or end position in the fifth data unit) can be accurately determined according to the length of each fourth data unit. Ground the fifth data unit into each separate fourth data unit.
  • the decoder needs to restore multiple first data units (source symbols) to a single fourth data unit (ordinary data packet, such as PDCP PDU) At this time, it is necessary to know whether each first data unit contains supplementary information. In the case of containing supplementary information, the supplementary information needs to be deleted to obtain the corresponding fourth data unit.
  • the header of the fourth data unit may include length information of the fourth data unit, or length information of the data field in the fourth data unit.
  • the first device receives the length information of each fourth data unit among the multiple fourth data units sent through the notification message.
  • the first protocol layer of the first device can determine the first data unit as a fourth data unit according to the length information of the fourth data unit, or after deleting supplementary information in the first data unit, it can be used as a fourth data unit. Data unit.
  • the encoding terminal may notify the decoding terminal of the length of the supplementary information included in each first data unit in the form of a message.
  • the second device may also send fourth indication information to a decoding end, where the fourth indication information is used to indicate the length of the supplementary information included in each first data unit.
  • the first device serves as a decoding end, it may also receive the fourth indication information.
  • the first protocol layer of the first device may delete the supplementary information of the corresponding length in each first data unit according to the length of the supplementary information included in each first data unit indicated in the fourth instruction, Obtain each corresponding fourth data unit.
  • the second device in FIG. 3 is used as the encoding end.
  • step 301 7 methods for determining multiple first data units (source symbols) based on at least one fourth data unit (ordinary data packet) are introduced.
  • the first device when used as a decoding end, it also introduces 7 corresponding methods to determine at least one fourth data unit (ordinary data packet) based on a plurality of the first data units (source symbols).
  • the protocol may specify which of the above seven methods is used by the encoding end to determine multiple first data units based on at least one fourth data unit.
  • the corresponding decoding end adopts a manner corresponding to the encoding end to determine at least one fourth data unit according to the plurality of first data units.
  • the encoding end may also send sixth indication information to the decoding end (for example, the first device) to instruct the encoding end to determine which of the 7 ways to determine multiple data units based on at least one fourth data unit.
  • the first data unit Then, after receiving the sixth indication information, the decoding end can adopt a manner corresponding to the encoding end to determine at least one fourth data unit based on the plurality of first data units.
  • the decoding end can also infer that the above method 6 or method 7 is used to determine the One of the first data units, at least one fourth data unit is determined. If the encoding end sends to the decoding end the fifth indication information for indicating the start position and/or the end position of each fourth data unit in the fifth data unit, the decoding end can also infer that the above method 3 or Manner 4 is to determine at least one fourth data unit according to a plurality of the first data units.
  • the fourth instruction information, and/or fifth instruction information, and/or sixth instruction information sent by the encoding end to the decoding end may be directly sent by the encoding end to the decoding end, or may be sent by the encoding end to the access first.
  • the network equipment is then sent to the decoding end by the access network equipment.
  • the encoding end and the decoding end are two terminal devices, and the two terminal devices can communicate directly or through an access network device.
  • the encoding end and the decoding end may be two IAB nodes, and the two IAB nodes may communicate directly or communicate through an access network device.
  • a communication device 600 is provided, and the device 600 can execute each step executed by the first device in the above-mentioned method in FIG. 5.
  • the apparatus 600 may be a first device or a chip applied in the first device.
  • the apparatus 600 may include: a transceiver module 620, a processing module 610, and optionally, a storage module 630; the processing module 610 may be connected to the storage module 630 and the transceiver module 620 respectively, and the storage module 630 may also be connected to the transceiver module 620 .
  • the transceiver module 620 is configured to receive a third data unit; the third data unit is a radio link control RLC layer data unit, and the third data unit includes a second protocol layer header and a second protocol layer header.
  • the processing module 610 is configured to send the second data unit to the first protocol layer when it is determined that the second protocol layer header of the third data unit includes the first indication information;
  • the first indication information is used to indicate that the third data unit is a network coded data unit;
  • the second protocol layer is a lower protocol layer of the first protocol layer; and network decoding is performed on a plurality of the second data units , Get multiple first data units.
  • the first protocol layer header of the second data unit includes at least one of the following: network coding type, network coding vector information, and used to indicate that the second data unit is network coding
  • the second indication information of the data unit; the vector information of the network coding is used to indicate the first data unit information corresponding to the second data unit.
  • the processing module 610 is further configured to determine at least one fourth data unit according to a plurality of the first data units.
  • the processing module 610 when used to determine at least one fourth data unit according to a plurality of the first data units, it is specifically used to:
  • Each of the plurality of first data units is used as a fourth data unit;
  • Each first data unit of the plurality of first data units is respectively used as a fourth data unit after the corresponding supplementary information is deleted;
  • Some of the first data units among the plurality of first data units are respectively regarded as a fourth data unit, and the remaining parts of the first data units are respectively regarded as a fourth data unit after the corresponding supplementary information is deleted.
  • the header of the fourth data unit includes length information; the length information is the length of the fourth data unit or the length of the data field in the fourth data unit.
  • the header of the fourth data unit further includes: third indication information, where the third indication information is used to indicate whether the header of the fourth data unit includes the length information.
  • the transceiver module 620 is further configured to receive fifth indication information, where the fifth indication information is used to indicate the length of each fourth data unit in the plurality of fourth data units.
  • the processing module 610 may be configured to divide the fifth data unit into at least two fourth data units according to the length of each fourth data unit; or, according to the length of each fourth data unit; The length of the fourth data unit divides the data unit from which the supplementary information has been deleted from the fifth data unit into at least two fourth data units.
  • the transceiver module 620 is further configured to receive fourth indication information, where the fourth indication information is used to indicate the length of the supplementary information included in each first data unit.
  • the storage module 630 is used to store a network decoding algorithm.
  • the storage module 630 may include one or more memories, and the memories may be devices for storing programs or data in one or more devices or circuits.
  • the storage module 630 may store a computer-executable instruction of the method on the first device side, so that the processing module 610 executes the method on the first device side in the foregoing embodiment.
  • the storage module 630 may be a register, a cache, a RAM, etc., and the storage module 630 may be integrated with the processing module 610.
  • the storage module 630 may be a ROM or another type of static storage device that can store static information and instructions, and the storage module 630 may be independent of the processing module 610.
  • the transceiver module 620 may be an input or output interface, pin or circuit, or the like.
  • a communication device 700 is provided.
  • the device 700 can perform each step performed by the second device in the above-mentioned method in FIG. 3.
  • the apparatus 700 may be a second device or a chip applied in the second device.
  • the apparatus 700 may include: a transceiver module 720, a processing module 710, and optionally, a storage module 730; the processing module 710 may be connected to the storage module 730 and the transceiver module 720 respectively, and the storage module 730 may also be connected to the transceiver module 720 .
  • the processing module 710 is configured to perform network coding on a plurality of first data units to obtain a plurality of second data units; and respectively add a second protocol layer header to each of the second data units , Obtain each corresponding third data unit, the second protocol layer header of the third data unit includes: first indication information, the first indication information is used to indicate that the third data unit is a network Encoding data unit; the second protocol layer is a lower protocol layer of the first protocol layer.
  • the third data unit is a radio link control RLC layer data unit.
  • the first protocol layer header of the second data unit includes at least one of the following: network coding type, network coding vector information, and used to indicate that the second data unit is network coding
  • the second indication information of the data unit; the vector information of the network coding is used to indicate the first data unit information corresponding to the second data unit.
  • the processing module 710 may also be configured to, for each third data unit of the plurality of third data units, based on the second indication information, in the second protocol layer Add path identification information to the header.
  • the processing module 710 is further configured to determine multiple first data units according to at least one fourth data unit.
  • processing module 710 when the processing module 710 is configured to determine multiple first data units according to at least one fourth data unit, it is specifically configured to:
  • Each of the at least two fourth data units is used as one of the first data units;
  • the fourth data units After adding corresponding supplementary information to some of the fourth data units in at least two fourth data units, they are respectively regarded as one of the first data units, and the remaining part of the fourth data units are respectively regarded as one of the first data units. unit.
  • the processing module 710 is further configured to determine the first data unit based on the fourth data unit received within the set time length; or determine the first data unit based on n fourth data units, Wherein, the sum of the lengths of n fourth data units is greater than or equal to the set data unit length, and the sum of the lengths of n-1 fourth data units is less than the set data unit length; or according to the set number of fourth data units Threshold, determine the first data unit.
  • the header of the fourth data unit includes length information; the length information is the length of the fourth data unit or the length of the data field in the fourth data unit.
  • the header of the fourth data unit further includes: third indication information, where the third indication information is used to indicate whether the header of the fourth data unit includes the length information.
  • the transceiver module 720 is configured to send fifth indication information, where the fifth indication information is used to indicate the length of each fourth data unit in the plurality of fourth data units.
  • the transceiver module 720 is configured to send fourth indication information, and the fourth indication information is used to indicate the length of the supplementary information included in each first data unit.
  • the storage module 730 is used to store network coding algorithms.
  • the storage module 730 may include one or more memories, and the memories may be devices for storing programs or data in one or more devices or circuits.
  • the storage module 730 may store computer-executable instructions of the method on the second device side, so that the processing module 710 executes the method on the second device side in the foregoing embodiment.
  • the storage module 730 may be a register, a cache, a RAM, etc., and the storage module 730 may be integrated with the processing module 710.
  • the storage module 730 may be a ROM or another type of static storage device that can store static information and instructions, and the storage module 730 may be independent of the processing module 710.
  • the transceiver module 720 may be an input or output interface, a pin or a circuit, or the like.
  • FIG. 8 is a schematic block diagram of a communication device 800 according to an embodiment of the present application. It should be understood that the apparatus 800 can execute each step executed by the first device in the method of FIG. 5, and in order to avoid redundancy, detailed description is omitted here.
  • the device 800 includes a processor 810 and an interface circuit 820, and optionally, a memory 830.
  • the interface circuit can be used to receive program instructions and transmit them to the processor, or the interface circuit can be used to communicate and interact with other communication devices, such as interactive control signaling and/or service data.
  • the interface circuit may be a code and/or data read-write interface circuit, or the interface circuit may be a signal transmission interface circuit between the communication processor and the transceiver.
  • the processor 810 and the memory 830 are electrically coupled.
  • the memory 830 is used to store a computer program; the processor 810 may be used to call the computer program or instructions stored in the memory to execute the above-mentioned communication method, or to execute the above-mentioned communication method through the interface circuit 820 Method of communication.
  • the processing module 610 in FIG. 6 may be implemented by the processor 810, the transceiver module 620 may be implemented by the interface circuit 820, and the storage module 630 may be implemented by the memory 830.
  • FIG. 9 is a schematic block diagram of a communication device 900 according to an embodiment of the present application. It should be understood that the apparatus 900 can execute each step executed by the second device in the method of FIG.
  • the device 900 includes a processor 910 and an interface circuit 920, and optionally, a memory 930.
  • the interface circuit can be used to receive program instructions and transmit them to the processor, or the interface circuit can be used to communicate and interact with other communication devices, such as interactive control signaling and/or service data.
  • the interface circuit may be a code and/or data read-write interface circuit, or the interface circuit may be a signal transmission interface circuit between the communication processor and the transceiver.
  • the processor 910 and the memory 930 are electrically coupled.
  • the memory 930 is used to store computer programs; the processor 910 can be used to call computer programs or instructions stored in the memory to execute the above-mentioned communication methods, or to execute the above-mentioned communication methods through the interface circuit 920. Method of communication.
  • the processing module 710 in FIG. 7 may be implemented by the processor 910, the transceiver module 720 may be implemented by the interface circuit 920, and the storage module 730 may be implemented by the memory 930.
  • the aforementioned processor may be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP.
  • the processor may further include a hardware chip or other general-purpose processors.
  • the above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • the above-mentioned PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (generic array logic, GAL) and other programmable logic devices , Discrete gates or transistor logic devices, discrete hardware components, etc. or any combination thereof.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM
  • the transceiver device, the interface circuit, or the transceiver described in the embodiments of the present application may include a separate transmitter, and/or a separate receiver, or the transmitter and the receiver may be integrated.
  • the transceiver, the interface circuit, or the transceiver can work under the instruction of the corresponding processor.
  • the transmitter may correspond to the transmitter in the physical device
  • the receiver may correspond to the receiver in the physical device.
  • the embodiment of the present application also provides a computer-readable storage medium that stores a computer program.
  • the computer program When the computer program is executed by a computer, the computer can be used to execute the above-mentioned communication method.
  • the embodiments of the present application also provide a computer program product containing instructions, which when running on a computer, enable the computer to execute the communication method provided above.
  • An embodiment of the present application also provides a communication system.
  • the communication system includes: a first device and a second device that perform the above-mentioned communication method.
  • this application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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Abstract

本申请涉及通信技术领域,公开了一种通信的方法及装置,用以提出一种数据单元在空口的网络编解码方式和传输的方式。编码端第一协议层对多个第一数据单元进行网络编码,得到多个网络编码的数据单元,然后第二协议层在网络编码的数据单元的包头中添加用于指示网络编码数据单元的指示信息。解码端的第二协议层接收数据单元,在确定接收到的数据单元的包头中包括用于指示网络编码数据单元的指示信息时,将所述数据单元去除第二协议层的包头后的数据单元,发送给第一协议层进行网络解码。

Description

一种通信的方法及装置
相关申请的交叉引用
本申请要求在2020年03月11日提交中国专利局、申请号为202010167899.1、申请名称为“一种通信的方法及装置”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
本申请实施例涉及通信技术领域,尤其涉及一种通信的方法及装置。
背景技术
相较于第四代移动通信系统,第五代移动通信移动针对网络的各项性能指标提出了更加严苛的要求。例如业务传输可靠性提出了更高的要求。
在空口传输中,编码端、解码端如何进行网络编码和网络解码,以及传输网络编码的数据单元,是需要解决的技术问题。
发明内容
本申请实施例提供一种通信的方法及装置,用以提出一种数据单元在空口的网络编解码方式和传输的方式。
第一方面,提供了一种通信的方法,第一设备包括第一协议层和第二协议层,所述第二协议层为所述第一协议层的下层协议层。所述第二协议层可以接收第三数据单元,所述第三数据单元包括第二协议层包头和第二数据单元。所述第二协议层可以确定所述第三数据单元的所述第二协议层包头中是否包括第一指示信息,所述第一指示信息用于指示所述第三数据单元为网络编码数据单元。如果包括第一指示信息,第二协议层可以将所述第二数据单元发送给第一协议层。如果不包括第一指示信息,所述第二协议层可以将所述第二数据单元,发送给第一协议层的上层协议层。然后,所述第一协议层可以对多个所述第二数据单元进行网络解码,得到多个第一数据单元。
上述实施例中,第一设备作为解码端,第二协议层可以根据数据单元中是否包括用于指示所述数据单元为网络编码数据单元的第一指示信息,来决定是将该数据单元发送给第一协议层,进行网络解码,还是发送给第一协议层的上层协议层,无需进行网络解码。提出了一种网络解码的方式,以及数据单元在不同协议层之间的传输方式。
在一种可能的实现中,所述第二数据单元的所述第一协议层包头中包括但不限于以下至少一项:网络编码的类型、网络编码的向量信息、用于指示所述第二数据单元为网络编码数据单元的第二指示信息。其中,所述网络编码的向量信息用于指示所述第二数据单元对应的第一数据单元信息。也就是指示第二数据单元是根据哪些第一数据单元进行网络编码得到的。
在一种可能的实现中,所述第三数据单元的所述第二协议层的包头中还包括:路径标识信息。如果接收到多个第三数据单元,这多个第三数据单元中通常会存在至少两个所述 第三数据单元中的所述路径标识信息不同。对于同一组(属于同一个block或属于object,或者属于同一个承载)内的所述第三数据单元进行分流的路由,可以增大数据解码的概率,提高数据传输的可靠性。
在一种可能的实现中,所述第一协议层还可以根据多个所述第一数据单元,确定至少一个第四数据单元。进一步的,还可以将所述至少一个第四数据单元发送给所述第一协议层的上层协议层。
在一种可能的实现中,所述第一协议层可以采用以下任一种方式:来执行根据多个所述第一数据单元,确定至少一个第四数据单元的步骤:
所述第一协议层将多个所述第一数据单元组成一个第四数据单元;或者
所述第一协议层将多个所述第一数据单元组成一个第五数据单元;并在所述第五数据单元中删除补充信息后,作为一个第四数据单元;或者
所述第一协议层将多个所述第一数据单元组成一个第五数据单元;并将所述第五数据单元切分为至少两个第四数据单元;或者
所述第一协议层将多个所述第一数据单元组成一个第五数据单元;并在所述第五数据单元中删除补充信息后,切分为至少两个第四数据单元;或者
所述第一协议层将多个所述第一数据单元中的每个第一数据单元,分别作为一个第四数据单元;或者
所述第一协议层将多个所述第一数据单元中的每个第一数据单元,分别删除对应的补充信息后,分别作为一个第四数据单元;或者
所述第一协议层将多个所述第一数据单元中的部分第一数据单元,分别作为一个第四数据单元,以及将其余部分第一数据单元分别删除对应的补充信息后,分别作为一个第四数据单元。
上述将多个所述第一数据单元组成一个第五数据单元或第四数据单元,可以是将多个所述第一数据单元级联(即首尾相连),作为一个第五数据单元或第四数据单元;也可以是将多个所述第一数据单元交织,作为一个第五数据单元或第四数据单元。
在一种可能的实现中,所述第一设备可以接收第六指示信息,所述第六指示信息可以指示编码端根据至少一个第四数据单元,确定多个所述第一数据单元的方式。从而第一设备的第一协议层可以根据第六指示信息,推理出采用上述7种方式中的哪种方式来执行根据多个所述第一数据单元,确定至少一个第四数据单元的步骤。
在一种可能的实现中,所述第四数据单元的包头中包括长度信息;所述长度信息为所述第四数据单元的长度,或者所述第四数据单元中的数据域的长度。根据数据域的长度和包头的长度可以得出第四数据单元的长度。这样第一协议层就可以根据第四数据单元的长度,确定是否删除补充信息来得到第四数据单元。或者根据第四数据单元的长度,在第五数据单元中切分出每个第四数据单元。
在一种可能的实现中,所述第四数据单元的包头中还包括:第三指示信息,所述第三指示信息用于指示所述第四数据单元的包头中是否包括所述长度信息。解码端可以根据所述第三指示信息来决定是否对长度信息的字段进行解析。在确定包括长度信息时,可以对长度信息的字段进行解析,以便后续使用。在确定不包括长度信息时,无需再对长度信息的字段进行解析,可以减少处理量。
在一种可能的实现中,所述第一设备接收第五指示信息,所述第五指示信息用于指示 多个所述第四数据单元中的每个第四数据单元的长度。具体的,可以是通过长度值来表示每个第四数据单元的长度,或者通过多个所述第四数据单元中的每个第四数据单元在所述第五数据单元中的起始位置和/或终止位置来表示每个第四数据单元的长度。
在一种可能的实现中,所述第一协议层在将所述第五数据单元切分为至少两个第四数据单元时,可以是所述第一协议层根据每个所述第四数据单元的长度,将所述第五数据单元切分为至少两个第四数据单元。
在一种可能的实现中,所述第一协议层在所述第五数据单元中删除补充信息后,切分为至少两个第四数据单元时,可以是所述第一协议层根据每个所述第四数据单元的长度,将所述第五数据单元删除补充信息后的数据单元切分为至少两个第四数据单元。
在一种可能的实现中,所述第一协议层将多个所述第一数据单元中的部分或全部第一数据单元分别删除对应的补充信息后,分别作为一个第四数据单元时,可以是根据所述第四数据单元的长度,在第一数据单元上提取出第四数据单元。
在一种可能的实现中,所述第一设备接收第四指示信息,所述第四指示信息用于指示第一数据单元中包括的所述补充信息的长度。第一设备的第一协议层在将部分第一数据单元或全部第一数据单元分别删除对应的补充信息后,分别作为一个第四数据单元时,就可以根据所述第四指示信息,删除第一数据单元中对应长度的补充信息。
在一种可能的实现中,所述第一数据单元可以称为源符号,所述第二数据单元为编码符号,所述第三数据单元为网络编码数据单元,第四数据单元为非网络编码的数据单元。
第二方面,提供了一种通信的方法,第二设备包括第一协议层和第二协议层,所述第二协议层为所述第一协议层的下层协议层。第二设备的第一协议层对多个第一数据单元进行网络编码,得到多个第二数据单元。第二设备的第二协议层分别对每个所述第二数据单元添加第二协议层包头,得到对应的每个第三数据单元,所述第三数据单元的所述第二协议层包头中包括:第一指示信息,所述第一指示信息用于指示所述第三数据单元为网络编码数据单元。
上述实施例中,第二设备作为编码端,第一协议层对数据单元进行网络编码,并将网络编码的数据单元发送给第二协议层。第二协议层对编码后的数据单元添加用于指示所述数据单元为网络编码数据单元的第一指示信息。提出了一种网络编码的方式,以及数据单元在不同协议层之间的传输方式。
在一种可能的实现中,所述第二数据单元的所述第一协议层包头中包括但不限于以下至少一项:网络编码的类型、网络编码的向量信息、用于指示所述第二数据单元为网络编码数据单元的第二指示信息;所述网络编码的向量信息用于指示所述第二数据单元对应的第一数据单元信息。也就是指示第二数据单元是根据哪些第一数据单元进行网络编码得到的。
在一种可能的实现中,所述第二协议层针对多个所述第三数据单元中的每个第三数据单元,基于所述第二指示信息,在所述第二协议层的包头中添加路径标识信息。这多个第三数据单元中通常会存在至少两个所述第三数据单元中的所述路径标识信息不同。对于同一组(属于同一个block或属于object,或者属于同一个承载)内的所述第三数据单元进行分流的路由,可以增大数据解码的概率,提高数据传输的可靠性。
在一种可能的实现中,所述第一协议层根据至少一个第四数据单元,确定多个所述第一数据单元,其中,所述第四数据单元可以是所述第一协议层从所述第一协议层的上层协 议层接收到的。
在一种可能的实现中,所述第一协议层可以采用以下任一种方式:来执行根据至少一个第四数据单元,确定多个所述第一数据单元的步骤:
所述第一协议层根据一个所述第四数据单元确定出多个所述第一数据单元;或
所述第一协议层将一个所述第四数据单元加补充信息后,作为一个第五数据单元,并根据所述第五数据单元确定出多个所述第一数据单元;或
所述第一协议层将至少两个第四数据单元级联后,作为一个第五数据单元;并根据所述第五数据单元确定出多个所述第一数据单元;或者
所述第一协议层将至少两个第四数据单元级联,并添加补充信息后,作为一个第五数据单元;并根据所述第五数据单元确定出多个所述第一数据单元;或者
所述第一协议层将至少两个第四数据单元中的每个第四数据单元,分别作为一个所述第一数据单元;或者
所述第一协议层将至少两个第四数据单元中的每个第四数据单元,分别添加对应的补充信息后,分别作为一个所述第一数据单元;或者
所述第一协议层将至少两个第四数据单元中的部分第四数据单元,分别添加对应的补充信息后,分别作为一个所述第一数据单元,以及将其余部分第四数据单元分别作为一个所述第一数据单元。
以上根据第四数据单元确定出多个所述第一数据单元,以及根据第五数据单元确定出多个所述第一数据单元中的“确定”可以是直接切分,也可以是交织切分。
在一种可能的实现中,第二设备发送可以发送第六指示信息,所述第六指示信息可以指示第二设备采用上述7种方式中的哪种方式来执行根据至少一个第四数据单元,确定多个所述第一数据单元的步骤。从而使解码端根据第六指示信息,推理出根据多个所述第一数据单元,确定至少一个第四数据单元的方式。
在一种可能的实现中,所述第一协议层基于设置的时间长度内接收到的第四数据单元,确定第一数据单元;或所述第一协议层根据n个第四数据单元,确定第一数据单元,其中,n个第四数据单元的长度之和大于或等于设置的数据单元长度(例如数据单元长度),n-1个第四数据单元的长度之和小于设置的数据单元长度;或所述第一协议层根据设置的第四数据单元的数量阈值m,确定第一数据单元。
在一种可能的实现中,所述时间长度,数据单元长度,第四数据单元的数量阈值m,可以是针对第二设备中的每个承载分别进行设置或配置的,不同的承载的设置或配置可以相同,也可以不同。每个用户承载的服务质量(quality of service,QoS)需求不同,例如不同的用户承载对时延的需求不同,有些用户承载对时延要求较高,有些用户承载对时延要求较低。对于时延要求高的业务,等待时间不能过长,因此设置的时间长度,数据单元长度,第四数据单元的数量阈值m可以较小些,以便第一协议层在接收到较少数量的第四数据单元后,就可以开始网络编码。对于时延要求低的业务,可以多等一段时间再进行网络编码,因此设置的时间长度,数据单元长度,第四数据单元的数量阈值m可以较大些。或者网络设备可以是针对第二设备的所有承载进行统一设置或配置的,此时第二设备上的所有承载设置都相同,通过统一配置可以减少配置所需的信令开销。
在一种可能的实现中,所述第四数据单元的包头中包括长度信息;所述长度信息为所述第四数据单元的长度,或者所述第四数据单元中的数据域的长度。根据数据域的长度和 包头的长度可以得出第四数据单元的长度。这样解码端就可以根据第四数据单元的长度,确定是否删除补充信息来得到第四数据单元。或者根据第四数据单元的长度,在第五数据单元中切分出每个第四数据单元。
在一种可能的实现中,所述第四数据单元的包头中还包括:第三指示信息,所述第三指示信息用于指示所述第四数据单元的包头中是否包括所述长度信息。解码端可以根据所述第三指示信息来决定是否对长度信息的字段进行解析。在确定包括长度信息时,可以对长度信息的字段进行解析,以便后续使用。在确定不包括长度信息时,无需再对长度信息的字段进行解析,可以减少处理量。
在一种可能的实现中,所述第二设备发送第五指示信息,所述第五指示信息用于指示多个第四数据单元中的每个第四数据单元的长度。具体的,可以是通过长度值来表示每个第四数据单元的长度,或者通过多个所述第四数据单元中的每个第四数据单元在所述第五数据单元中的起始位置和/或终止位置来表示每个第四数据单元的长度。
在一种可能的实现中,所述第二设备发送第四指示信息,所述第四指示信息用于指示第一数据单元中包括的所述补充信息的长度。以使解码端在将部分第一数据单元或全部第一数据单元分别删除对应的补充信息后,分别作为一个第四数据单元时,就可以根据所述第四指示信息,删除第一数据单元中对应长度的补充信息。
在一种可能的实现中,所述第一数据单元可以称为源符号,所述第二数据单元为编码符号,所述第三数据单元为网络编码数据单元,第四数据单元为非网络编码的数据单元。
第三方面,提供了一种通信的装置,所述装置具有实现上述第一方面及第一方面任一可能的实现中的功能。这些功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的功能模块。
第四方面,提供了一种通信的装置,所述装置具有实现上述第二方面及第二方面任一可能的实现中的功能。这些功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的功能模块。
第五方面,提供了一种通信的装置,该装置可以为上述方法实施例中的第一设备,或者为设置在第一设备中的芯片。该装置包括收发器以及处理器,可选的,还包括存储器。其中,该存储器用于存储计算机程序或指令,处理器分别与存储器和收发器耦合,当处理器执行所述计算机程序或指令时,使装置通过所述收发器执行上述第一方面及第一方面任一可能的实现中由第一设备执行的方法。
第六方面,提供了一种通信的装置,该装置可以为上述方法实施例中的第二设备,或者为设置在第二设备中的芯片。该装置包括收发器以及处理器,可选的,还包括存储器。其中,该存储器用于存储计算机程序或指令,处理器分别与存储器和收发器耦合,当处理器执行所述计算机程序或指令时,使装置通过所述收发器执行上述第二方面及第二方面任一可能的实现中由第二设备执行的方法。
第七方面,提供了一种计算机程序产品,所述计算机程序产品包括:计算机程序代码,当所述计算机程序代码在计算机上运行时,使得计算机执行上述第一方面及第一方面任一可能的实现中由第一设备执行的方法。
第八方面,提供了一种计算机程序产品,所述计算机程序产品包括:计算机程序代码, 当所述计算机程序代码在计算机上运行时,使得计算机执行上述第二方面及第二方面任一可能的实现中由第二设备执行的方法。
第九方面,本申请提供了一种芯片系统,该芯片系统包括处理器和存储器,所述处理器、所述存储器之间电耦合;所述存储器,用于存储计算机程序指令;所述处理器,用于执行所述存储器中的部分或者全部计算机程序指令,当所述部分或者全部计算机程序指令被执行时,用于实现上述第一方面及第一方面任一可能的实现的方法中第一设备的功能。
在一种可能的设计中,所述芯片系统还可以包括收发器,所述收发器,用于发送所述处理器处理后的信号,或者接收输入给所述处理器的信号。该芯片系统,可以由芯片构成,也可以包括芯片和其他分立器件。
第十方面,本申请提供了一种芯片系统,该芯片系统包括处理器和存储器,所述处理器、所述存储器之间电耦合;所述存储器,用于存储计算机程序指令;所述处理器,用于执行所述存储器中的部分或者全部计算机程序指令,当所述部分或者全部计算机程序指令被执行时,用于实现上述第二方面及第二方面任一可能的实现的方法中第二设备的功能。
在一种可能的设计中,所述芯片系统还可以包括收发器,所述收发器,用于发送所述处理器处理后的信号,或者接收输入给所述处理器的信号。该芯片系统,可以由芯片构成,也可以包括芯片和其他分立器件。
第十一方面,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计算机程序,当该计算机程序被运行时,上述第一方面及第一方面任一可能的实现中由第一设备执行的方法被执行。
第十二方面,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计算机程序,当该计算机程序被运行时,上述第二方面及第二方面任一可能的实现中由第二设备执行的方法被执行。
第十三方面,提供了一种通信的系统,所述系统包括:执行上述第一方面及第一方面任一可能的实现中的方法的第一设备,以及执行上述第二方面及第二方面任一可能的实现中的方法的第二设备。
附图说明
图1为本申请实施例中提供的一种通信系统架构示意图;
图2a为本申请实施例中提供的一种应用场景架构示意图;
图2b为本申请实施例中提供的一种协议层示意图;
图3为本申请实施例中提供的一种第二设备的网络编码的通信示意图;
图4a、图4b、图4c为本申请实施例中分别提供的一种网络编码的方法;
图5为本申请实施例中提供的一种第一设备的网络解码的通信示意图;
图6、图7、图8、图9为本申请实施例中分别提供的一种通信装置。
具体实施方式
下面将结合附图,对本申请实施例进行详细描述。
为便于理解本申请实施例,以下对本申请实施例的部分用语进行解释说明,以便于本领域技术人员理解。
本申请实施例的技术方案可以应用于各种通信系统,例如:长期演进(long term evolution,LTE)系统,全球互联微波接入(worldwide interoperability for microwave access,WiMAX)通信系统,第五代(5th Generation,5G)系统,如新一代无线接入技术(new radio access technology,NR),及未来的通信系统等。
例如,图1为本申请适用的一种通信系统架构示意图,包括:终端设备11、无线回传设备12、接入网设备13和核心网设备14。终端设备11通过无线的方式与无线回传设备12相连,终端设备11通过一个或多个无线回传设备12与接入网设备13相连,终端设备11也可以直接与接入网设备13通过无线方式相连。接入网设备13通过无线或有线方式与核心网设备14连接。核心网设备14与接入网设备13可以是独立的不同的物理设备,也可以是将核心网设备14的功能与接入网设备13的逻辑功能集成在同一个物理设备上,还可以是一个物理设备上集成了部分核心网设备14的功能和部分的接入网设备13的功能。终端设备可以是固定位置的,也可以是可移动的。本申请对核心网设备14、接入网设备13、无线回传设备12和终端设备11的数量不做限定。终端设备11和接入网设备13之间可能存在多条传输路径。在一条传输路径上,包含多个节点,例如包括一个终端设备,一个无线接入网设备,以及一个或多个无线回传设备。
终端设备,又可以称之为用户设备(user equipment,UE)、移动台(mobile station,MS)、移动终端(mobile terminal,MT)、终端等,是一种向用户提供语音和/或数据连通性的设备。例如,终端设备包括具有无线连接功能的手持式设备、车载设备、物联网设备等。目前,终端设备可以是:手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device,MID)、可穿戴设备,虚拟现实(virtual reality,VR)设备、增强现实(augmented reality,AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端,或智慧家庭(smart home)中的无线终端等。
无线回传设备可以为其子节点提供回传服务,其子节点可以是终端设备或另一个无线回传设备。无线回传设备可以是中继节点(relay node,RN)、接入回传一体化(Integrated access and backhaul,IAB)节点,或者其他能够提供无线中继功能的设备。IAB节点可以由移动终端(mobile termination,MT)部分和分布式单元(distributed unit,DU)部分组成。当IAB节点面向其父节点时,可以被看作是用户设备,即MT的角色;当IAB节点面向其子节点时,其可被看作网络设备。
(无线)接入网络(radio access network,(R)AN)是运营商网络的子网络,是运营商网络中业务节点与终端设备之间的实施系统。终端设备要接入运营商网络,首先是经过RAN,进而可通过RAN与运营商网络的业务节点连接。本申请中的RAN设备,是一种为终端设备提供无线通信功能的设备,RAN设备也称为接入网设备。本申请中的RAN设备包括但不限于:5G中的下一代基站(generation node B,gNB)、演进型节点B(evolved node  B,eNB)、无线网络控制器(radio network controller,RNC)、节点B(node B,NB)、基站控制器(base station controller,BSC)、基站收发台(base transceiver station,BTS)、家庭基站(例如,home evolved node B,或home node B,HNB)、基带单元(baseBand unit,BBU)、传输点(transmitting and receiving point,TRP)、发射点(transmitting point,TP)、移动交换中心等。
接入网设备也可以是IAB宿主(IAB donor)设备,IAB宿主设备可以是一个具有完整基站功能的接入网网元,还可以是集中式单元(centralized unit,CU)和分布式单元(distributed unit,DU)分离形态的接入网网元,IAB宿主设备连接到为终端设备服务的核心网设备上,并为IAB节点提供无线回传功能。为便于表述,将IAB宿主设备的集中式单元(IAB donor CU)简称为donor CU,或CU。IAB宿主设备的分布式单元(IAB donor DU)简称为donor DU。donor CU可以是控制面(control plane,CP)和用户面(user plane,UP)分离的形态,例如CU可由一个CU-CP和一个或多个CU-UP组成。本申请中IAB donor也可称为宿主节点(donor node)或宿主基站(Donor gNodeB,DgNB)。终端设备的业务数据可以由IAB节点通过无线回传链路连接到IAB宿主(IAB donor)设备传输。
接入网设备13、无线回传设备12和终端设备11可以部署在陆地上,包括室内或室外、手持或车载;也可以部署在水面上;还可以部署在空中的飞机、气球和人造卫星上。本申请的实施例对无线接入网设备13、无线回传设备12和终端设备11的应用场景不做限定。
设备间的无线链路可以通过授权频谱(licensed spectrum)进行通信,也可以通过免授权频谱(unlicensed spectrum)进行通信,也可以同时通过授权频谱和免授权频谱进行通信。设备间的无线链路可以通过6吉赫兹(gigahertz,GHz)以下的频谱进行通信,也可以通过6GHz以上的频谱进行通信,还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对无线链路所使用的频谱资源不做限定。
为便于理解本申请实施例,接下来对本申请的应用场景进行介绍,本申请实施例描述的业务场景是为了更加清楚的说明本申请实施例的技术方案,并不构成对于本申请实施例提供的技术方案的限定,本领域技术人员可知,随着新业务场景的出现,本申请实施例提供的技术方案对于类似的技术问题,同样适用。
如图2a所示,提出了一种应用场景架构示例图,第二设备22作为编码设备,第一设备21作为解码设备。第一设备21包括第一协议层a和位于所述第一协议层a之下的第二协议层b。第二设备22包括第一协议层c和位于所述第一协议层c之下的第二协议层d。第二设备22的第一协议层c可以对数据单元进行网络编码,并将网络编码的数据单元发送给第二协议层d,第二协议层d将网络编码的数据单元发出,可以是发给解码端,也可以是发给下一协议层。第一设备21的第二协议层b可以接收网络编码的数据单元,并将接收到的所述网络编码的数据单元发送给第一协议层a,第一协议层a将网络编码的数据单元进行解码。其中,所述第一设备的所述第二协议层b或所述第二设备的所述第二协议层d例如可以是用于网络编码的数据单元在空口传输的路由的空口协议层。
需要注意的是,第一设备21的第一协议层a也可以具有上述描述的第二设备22的第一协议层c对数据单元进行网络编码的功能,第一设备的第二协议层b也可以具有上述描述的第二设备22的第二协议层d发送网络编码的数据单元的功能。第二设备22的第二协议层d也可以具有上述描述的第一设备21的第二协议层b的接收网络编码的数据单元的功能,第二设备的第一协议层c也可以具有上述描述的第一设备21的第一协议层a对网络 编码的数据单元进行网络解码的功能。第一设备21和第二设备22可以是不同的设备,第一设备21接收第二设备22发送的网络编码的数据单元。
结合图1的示例,在下行传输时,第二设备22可以是无线接入设备13,也就是网络编码的功能位于无线接入设备13上。第一设备21可以是无线回传设备12或者终端设备11。也就是网络解码的功能位于无线回传设备12或者终端设备11上。对于上行传输,第二设备22可以是无线回传设备12或者终端设备11,也就是网络编码功能位于无线回传设备12或者终端设备11上。第一设备21可以是无线接入设备13,也就是网络解码的功能位于无线接入设备13上。其中,无线接入设备可以是例如gNB-CU(例如,IAB donor CU)或者是gNB-DU(例如,IAB donor DU)或者gNB。另外,如果两个终端设备11之间可以进行直接通信,所述第一设备21和第二设备22也可以为两个不同的终端设备11。
上述第一设备21中的第一协议层a或第二设备22中的第一协议层c可以是新定义的一个具有网络编码和/或解码功能的协议层或者协议子层。例如图2b所示,将第一协议层定义为:网络编码(network coding,NC)层,NC层位于分组数据汇聚协议(packet data convergence protocol,PDCP)层与回传适配协议(backhaul adaptation protocol,BAP)层之间。
示例性的,现有的BAP层可以具备以下能力中的至少一种:为数据包添加能被无线回传节点识别出的路由信息(Routing information)、基于所述能被无线回传节点识别出的路由信息执行路由选择、为数据包添加能被无线回传节点识别出的与服务质量(quality of service,简称QoS)需求相关的标识信息、为数据包执行在包含无线回传节点的多段链路上的QoS映射、为数据包添加数据包类型指示信息、向具有流量控制能力的节点发送流控反馈信息。现有BAP层的相关解释也可以参照第三代合作伙伴项目(the 3rd generation partnership project,3GPP)技术标准(technical standard,TS)38.340V1.0.0版本中关于BAP层的相关描述。
此处的NC层也可以称为编解码层,网络编解码层,或者其它名称,在本申请中不进行限定。也可以对原有的PDCP层添加一个子层协议层,用于网络编码和/或解码,则第一协议层a或者第一协议层c可以是PDCP层的一个子层协议层。也可以对原有的BAP层添加一个子层协议层,用于网络编码和/或解码,则第一协议层可以是BAP层的一个子层协议层。同样,第一设备21中的第二协议层b或第二设备22中的第二协议层d可以是BAP层或者BAP层的一个子层协议层。也就是说,第一协议层和位于第一协议层之下的第二协议层可以都是BAP的一个子层协议层。第一设备21中的第二协议层b和第二设备22中的第二协议层d也可以是BAP层的下层协议层,例如,无线链路控制(radio link control,RLC)层、介质访问控制子层协议(media access control,MAC)层等。或者第一设备21中的第二协议层b和第二设备22中的第二协议层d还可以是新定义的一个用于实现数据单元在无线链路上的路由功能的协议层,第二协议层的名称在本申请中不进行限定。
另外:网络编码:编码端可以对源数据进行随机线性组合从而生成任意多个网络编码的数据,解码端只要收到足够多的网络编码的数据就可以就恢复源数据,因此数据传输过程中发生的某个数据丢失不会影响解码性能。通过网络编码可以减少数据包在传输过程中的重传时延,切可以通过多路径传输提高数据传输的可靠性。
网络解码为网络编码的逆过程。
本申请中的“和/或”,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。字符“/”一般表示前后关联对象是一种“或”的关系。
本申请中所涉及的多个,是指两个或两个以上。
在本申请的描述中,“第一”、“第二”等词汇,仅用于区分描述的目的,而不能理解为指示或暗示相对重要性,也不能理解为指示或暗示顺序。
另外,在本申请实施例中,“示例的”一词用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或实现方案不应被解释为比其它实施例或实现方案更优选或更具优势。确切而言,使用示例的一词旨在以具体方式呈现概念。
本申请提出了一种数据单元在空口的网络编解码方式和传输的方式。接下来将结合附图对方案进行详细介绍。附图中以虚线标识的特征或内容可理解为本申请实施例的可选操作或者可选结构。
在以下实施例中,第四数据单元可以理解为从高层收到的普通数据包,第一数据单元可以理解为源符号,第二数据单元可以理解为编码符号,第三数据单元可以理解为网络编码数据单元,第五数据单元可以理解为数据对象(object)或块(block)。先根据普通数据包确定源符号,或者先根据普通数据包确定数据对象(object)或块(block),再根据数据对象(object)或块(block)确定源符号。然后,再对源符号进行网络编码得到编码符号。其中,根据普通数据包确定源符号,或者先根据普通数据包确定数据对象(object)或块(block),再根据数据对象(object)或块(block)确定源符号的过程也可以理解为网络编码的一部分。
如图3所示,提供了一种第二设备进行网络编码的通信过程示意图,图3示例中的第二设备可以为图2a中的第二设备22。第二设备的第一协议层和第二协议层,分别为图2a中的第一协议层c和第二协议层d。具体包括如下步骤:
步骤301:第二设备的第一协议层根据至少一个第四数据单元,确定多个第一数据单元。
可选的,第四数据单元是所述第一协议层从所述第一协议层的上层协议层接收到的。当所述第一协议层为PDCP层的子层时,所述第四数据单元可以为PDCP服务数据单元(service data unit,SDU);或当所述第一协议层位于所述PDCP层的下一协议层,例如图2b中的网络编码层NC中时,所述第四数据单元可以为NC SDU或PDCP协议数据单元(protocol data unit,PDU);或者当所述第一协议层位于所述PDCP层的下一协议层,例如BAP层中时,所述第四数据单元可以为BAP SDU或者PDCP PDU。
可选的,第二设备中可以设置第一数据单元的长度,还可以设置:如何确定第四数据单元,进而确定第一数据单元。例如可以设置时间长度,或数量阈值m,或者数据对象(object)或块(block)的长度门限等信息,根据这些信息确定哪些第四数据单元为一组,来确定第一数据单元。
一种示例中,所述第一协议层基于设置的时间长度内接收到的第四数据单元,确定第一数据单元。例如设置的时间长度为5ms,或30ms等。第一协议层以设置的时间长度(例如10ms、20ms等)为一个周期,每个周期中接收到的第四数据单元为一组,根据这一组第四数据单元,确定多个第一数据单元。
另一种示例中,所述第一协议层根据n个第四数据单元,确定第一数据单元,其中,n个第四数据单元的长度之和大于或等于设置的数据单元长度,n-1个第四数据单元的长度 之和小于设置的数据单元长度。
再一种示例中,所述第一协议层根据设置的第四数据单元的数量阈值m,确定第一数据单元。第一协议层以连续接收到的m个第四数据单元为一组,来确定第一数据单元。或者以连续接收到的m+1个第四数据单元为一组,来确定第一数据单元。
上述时间长度,数据单元长度,或者第四数据单元的数量阈值m,可以是网络设备针对第二设备中的每个承载进行设置或配置的,每个承载可以设置这三个信息中的至少一个,不同的承载设置的信息可以相同,也可以不同。
上述时间长度,数据单元长度,或者第四数据单元的数量阈值m,也可以是网络设备针对第二设备的所有承载一起设置的,所有承载设置的信息相同。通过统一配置可以减少配置所需的信令开销。
上述时间长度,和/或数据单元长度,和/或第四数据单元的数量阈值m,可以是图1中的接入网设备13进行设置的,如果第二设备为接入网设备12(例如基站或者IAB宿主节点),则自身进行设置,如果第二设备为图1中的无线回传设备12或终端设备11,则接入网设备为所述第二设备配置上述的时间长度,和/或数据单元长度,和/或第四数据单元的数量阈值m。
每个用户承载的服务质量(quality of service,QoS)需求不同,例如不同的用户承载对时延的需求不同,有些用户承载对时延要求较高,有些用户承载对时延要求较低。对于时延要求高的业务,等待时间不能过长,因此设置的时间长度,数据单元长度,第四数据单元的数量阈值m可以较小些,以便第一协议层在接收到较少数量的第四数据单元后,就可以开始网络编码。对于时延要求低的业务,可以多等一段时间再进行网络编码,因此设置的时间长度,数据单元长度,第四数据单元的数量阈值m可以较大些。
接下来详细说明第二设备的所述第一协议层根据至少一个第四数据单元(普通数据包),确定多个第一数据单元(源符号)的过程。此过程,也可以被称为是网络编码过程的一部分。
方式1,所述第一协议层根据一个所述第四数据单元确定出多个第一数据单元。
方式2,由于一个所述第四数据单元无法等分为多个第一数据单元,则所述第一协议层可以将一个所述第四数据单元加补充信息(padding)后,作为一个第五数据单元(object或block),并根据所述第五数据单元确定出多个第一数据单元。补充信息的长度根据第四数据单元的长度和第一数据单元的长度确定。例如,第四数据单元的长度为100bit,第二设备中设置的第一数据单元的长度为30bit,则补充信息的长度为20bit,第四数据单元加上补充信息后,得到的第五数据单元的长度为120bit,则可以等分为4个第一数据单元。再例如,第四数据单元的长度为80bit,第二设备中设置的第一数据单元的长度为40bit,第四数据单元可以等分为2个第一数据单元,则第四数据单元无需添加补充信息。
方式3,所述第一协议层将至少两个第四数据单元级联(首尾相连)后,作为一个第五数据单元;并根据所述第五数据单元确定出多个第一数据单元。
方式4,所述第一协议层将至少两个第四数据单元级联(首尾相连)后,无法等分为多个第一数据单元。则所述第一协议层将至少两个第四数据单元级联,并添加补充信息后,作为一个第五数据单元;并根据所述第五数据单元确定出多个第一数据单元。如图4a所示,第一协议层根据4个PDCP PDU(第四数据单元),确定4个第一数据单元。PDCP PDU1至PDCP PDU4首尾相连,并添加补偿信息(padding)后,作为一个第五数据单元,然后 对第五数据单元4等分,得到4个第一数据单元。根据4个第一数据单元进行网络编码得到多个第二数据单元。
以上方式1中根据第四数据单元确定出多个所述第一数据单元,以及方式2、方式3和方式4中,根据第五数据单元确定出多个所述第一数据单元,中的“确定”可以是直接切分,也可以是交织切分。此处直接切分的意思可以是如图4a所示的切分。图4a给出了一种直接切分为直接等分的示例,在本申请中,切分也可以是不等分。
接下来如图4c所示,提供了一种交织切分的方式。例如第四数据单元或第五数据单元为150bit,在直接切分时,可以将150bit直接切分为三个50bit的第一数据单元。在交织切分时,可以是先将150bit切分为5个30bit的数据单元,在将5个30bit的数据单元分别切分为3个10bit的数据单元。将5个30bit的数据单元中各自的第一个10bit的数据单元组合成一个50bit的第一数据单元,将5个30bit的数据单元中各自的第二个10bit的数据单元组合成另一个50bit的第一数据单元,依次类推,可以组成3个50bit的第一数据单元。
方式5,所述第一协议层将至少两个第四数据单元中的每个第四数据单元,分别作为一个所述第一数据单元。
方式6,所述第一协议层将至少两个第四数据单元中的每个第四数据单元,分别添加对应的补充信息后,分别作为一个所述第一数据单元。
方式7,所述第一协议层将至少两个第四数据单元中的部分第四数据单元,分别添加对应的补充信息后,分别作为一个所述第一数据单元,以及将其余部分第四数据单元分别作为一个所述第一数据单元。如图4b所示,第一协议层根据4个PDCP PDU(第四数据单元),确定4个第一数据单元。PDCP PDU1和PDCP PDU3可以分别作为一个第一数据单元,PDCP PDU2和PDCP PDU4需要分别添加补充信息后,分别作为一个第一数据单元。根据4个第一数据单元进行网络编码得到多个第二数据单元。
解码端与第二设备可以预先规定采用以上方式1至方式7中的某一种方式来根据至少一个第四数据单元,确定多个第一数据单元。或者第二设备自身选择采用以上方式1至方式7中的某一种方式来根据至少一个第四数据单元,确定多个第一数据单元。在一种示例中,所述第二设备可以发送第六指示信息,第六指示信息用于指示第二设备采用以上方式1至方式7中的哪种方式来根据至少一个第四数据单元,确定多个第一数据单元。
可选的,第二设备向解码端发送第六指示信息,所述第六指示信息用于指示第二设备采用以上7种方式中的哪种方式来执行根据至少一个第四数据单元,确定多个第一数据单元的步骤。则解码端在接收到第六指示信息后,就可以采用与第二设备对应的方式,来根据多个所述第一数据单元,确定至少一个第四数据单元。
步骤301是可选的步骤。步骤301可以单独结合现有技术,作为本申请的一个实施例,步骤301也可以和后面的步骤302-303结合,作为本申请的一个实施例。当然,后面的步骤302-303也可以和现有技术结合,作为本申请的一个实施例。
步骤302:第二设备的第一协议层对多个第一数据单元进行网络编码,得到多个第二数据单元。并将第二数据单元发送给第二协议层。
可选的,第二设备的第一协议层对所述第一数据单元进行网络编码,得到多个网络编码的数据单元,并对每个网络编码的数据单元添加第一协议层的包头信息,得到第二数据单元。
可选的,所述第二数据单元的第一协议层包头中包括但不限于以下至少一项:网络编码的类型、网络编码的向量信息、用于指示所述第二数据单元为网络编码数据单元的第二指示信息。
用于指示所述第二数据单元为网络编码数据单元的第二指示信息可以占用1bit,例如该1bit为0时,则指示第二指示信息所在的数据单元为网络编码的数据单元,该1bit为1时,则指示第二指示信息所在的数据单元非网络编码的数据单元。或者该1bit为1时,则指示第二指示信息所在的数据单元为网络编码的数据单元,该1bit为0时,则指示第二指示信息所在的数据单元非网络编码的数据单元。
网络编码的类型例如可以是喷泉码、或随机线性网络编码(random liner network coding,RLNC)等。
在进行网络编码时,由一个或多个第一数据单元(源符号)编码成第二数据单元(编码符号),所述网络编码的向量信息可以用于指示所述第二数据单元对应的第一数据单元信息,即该第二数据单元是根据哪些第一数据单元网络编码而成的。第二数据单元根据哪些第一数据单元网络编码而成,取决于网络编码的算法实现。所述网络编码的向量信息可以是以bitmap的形式指示所述第二数据单元是根据哪些第一数据单元网络编码而成。例如:在进行网络编码时,有5个第一数据单元(源符号),每个第二数据单元(编码符号)根据5个第一数据单元中的某一个或多个第一数据单元网络编码而成。例如bitmap 10010,用于指示所述第二数据单元是根据第一个和第四个第一数据单元网络编码而成。可选的,所述bitmap的系数也可以是大于等于1的正整数,例如当bitmap为20010时,用于指示所述第二数据单元是根据第一个第一数据单元先乘以2再和第四个第一数据单元网络编码而成。
再例如,如果网络编码算法为系统码编码,则网络编码生成的多个第二数据单元(编码符号)中既包括由一个第一数据单元(源信息或称为源符号)单独网络编码得到第二数据单元的情况,也包括根据多个第一数据单元进行网络编码得到第二数据单元(此处,根据多个第一数据单元进行网络编码得到第二数据单元,可以称为修复符号)的情况。例如,根据4个第一数据单元进行网络编码,得到6个第二数据单元。这6个第二数据单元中的前4个第二数据单元由一个第一数据单元单独网络编码得到,前4个第二数据单元对应的bitmap分别为:1000、0100、0010、0001。从第五个第二数据单元开始,根据多个第一数据单元进行网络编码得到,bitmap例如可以是1001,1100,0011等。在由一个第一数据单元单独网络编码得到一个第二数据单元时,该第二数据单元的编码向量信息也可以是第一数据单元的编号,即第几个第一数据单元。另外,由一个第一数据单元单独网络编码得到第二数据单元,和根据多个第一数据单元进行网络编码得到第二数据单元,这两种第二数据单元的包头格式可以不同,例如前者可以通过源符号的序号进行标识,后者可以通过网络编码的向量信息进行标识,因此第二数据单元的包头中还可以添加指示信息,来指示该第二数据单元是由一个第一数据单元进行网络编码得到,还是根据多个第一数据单元进行网络编码得到。
在现有技术中,网络编码的算法固定,网络编码的向量信息由协议规定,例如在采用喷泉码进行网络编码时,协议规定:网络编码的向量信息可以由该编码符号的编号推导而得到,即该编码符号为一组编码符号中的第几个编码符号,则解码端就可以正确解码出编码符号对应的源符号。在本申请中,在网络编码的数据单元(如第二数据单元)的第一协 议层的包头中携带网络编码的向量信息,则第二设备可以灵活地进行网络编码。
该网络编码的算法可以是接入网设备配置的。对于下行传输,网络编码的功能可以位于CU上,此时属于基站的算法实现行为。当网络编码的功能位于DU上,DU可以根据CU配置的算法进行网络编码。对于上行传输,网络编码的功能则位于终端设备或者IAB节点的MT部分上,终端设备或IAB节点的MT可以根据CU配置的算法进行网络编码。
步骤303:第二设备的第二协议层接收来自所述第一协议层的多个第二数据单元,并分别对每个所述第二数据单元添加第二协议层包头,得到对应的每个第三数据单元。所述第三数据单元例如为无线链路控制RLC层数据单元。
可选的,所述第三数据单元的所述第二协议层包头中包括:第一指示信息,所述第一指示信息用于指示所述第三数据单元或第三数据单元中的第二数据单元为网络编码数据单元。
所述第二设备向解码端发送每个第三数据单元,解码端的第二协议层接收到数据单元后,向所述第二协议层的上层协议层递交,此时可以有两种递交方式。一种方式为:将普通(非网络编码)的数据单元递交至第一协议层的上层协议层,无需进行网络解码。另一种方式为,将网络编码的第三数据单元递交至第一协议层,进行网络解码。例如,如图2b所示,解码端的第二协议层为BAP层,第一协议层为NC层,第一协议层的上层协议层为PDCP层。第二协议层将非网络编码的数据单元递交至PDCP层,将网络编码的第三数据单元递交至NC层。为了使第二协议层(BAP层)识别出数据单元是网络编码的第三数据单元还是非网络编码的数据单元。第二设备(编码端)的第二协议层(BAP层或BAP的下层协议层)分别对每个所述第三数据单元的所述第二协议层包头中添加:用于指示所述第三数据单元或第三数据单元中的第二数据单元为网络编码数据单元的第一指示信息。在多跳数据传输过程中,即使中间节点对第三数据单元先去包头再加包头,所述第一指示信息也需要一直存在。解码端的第二协议层在接收到第三数据单元后,就可以根据第三数据单元的第二协议层的包头中包括的所述第一指示信息,可以确定将所述第三数据单元发送给第一协议层进行网络解码,而非第一协议层的上层协议层。
另外,对于同一组(属于同一个block或属于object,或者属于同一个承载)内的所述第三数据单元可以进行分流的路由,以增大数据解码的概率,保证数据传输的可靠性。例如,该分流的路由可以是将同一组内的第三数据单元分别通过不同的RLC承载(RLC承载可以包括RLC实体和对应的逻辑信道)进行发送。可选的,第二设备的第一协议层可以在第二数据单元的包头中添加用于指示所述第二数据单元为网络编码数据单元的第二指示信息,第二协议层在确定一个数据单元中不包括所述第二指示信息,则该数据单元为非网络编码的数据单元时,第二协议层正常执行路由。若一个数据单元中包括所述第二指示信息,则该数据单元为网络编码的数据单元,第二协议层需要对该数据单元所在组内的多个数据单元进行分流。第二协议层对第二数据单元添加第二协议层的包头,得到第三数据单元。所述第二协议层可以针对多个所述第三数据单元中的每个第三数据单元,基于所述第二指示信息,在所述第二协议层的包头中添加路径标识信息。一般情况下,一组内的多个第三数据单元中存在至少两个所述第三数据单元中的所述路径标识信息不同。不同的路由标识信息表示不同的路由路径。例如,一组有4个第三数据单元,分别为数据单元1至数据单元4,数据单元1、数据单元2和数据单元4中的路径标识信息相同,数据单元3中的路径信息与另外几个数据单元中的路径信息不同。或者数据单元1和数据单元4中的 路径标识信息相同,数据单元1和数据单元3中的路径信息相同,且与另外几个数据单元中的路径信息不同。再或者,数据单元1、数据单元3和数据单元4中的路径信息均不同,数据单元2与数据单元1中的路径信息相同。
以上对于第二设备进行网络编码的过程进行了描述,接下来对第一设备进行网络解码的过程进行描述。第二设备可以是将网络编码的第三数据单元发送给了第一设备,第一设备对第三数据单元进行网络解码,则第一设备与第二设备不同。
如图5所示,提供了一种第一设备进行网络解码的通信过程示意图,图5示例中的第一设备可以为图2a中的第一设备21。第一设备的第一协议层和第二协议层,分别为图2a中的第一协议层a和第二协议层b。具体包括如下步骤:
步骤501:第一设备的第二协议层接收第三数据单元。所述第三数据单元包括第二协议层包头和第二数据单元。
所述第三数据单元为从非第一设备的其他设备处接收到的,或者从所述第二协议层的下层协议层接收到的。
该第三数据单元属于哪一个协议层的数据包可以取决于所述第二协议层的下层协议层为哪个协议层。示例性的,该第三数据单元可以为无线链路控制层数据单元,例如无线链路控制层服务数据单元(radio link control service data unit,RLC SDU)。示例性的,该第三数据单元也可以为媒体接入控制层数据单元,例如媒体接入控制层服务数据单元(media access control service data unit,MAC SDU)。
步骤502:所述第二协议层确定所述第三数据单元的所述第二协议层包头中是否包括第一指示信息,所述第一指示信息用于指示所述第三数据单元为网络编码数据单元。如果是,则进行步骤503;如果否,则进行步骤504。
可选的,所述第三数据单元的所述第二协议层的包头中包括:路径标识信息。
步骤503:所述第二协议层将所述第二数据单元发送给第一协议层。
可选的,所述第二数据单元的所述第一协议层包头中包括但不限于以下至少一项:网络编码的类型、网络编码的向量信息、用于指示所述第二数据单元为网络编码数据单元的第二指示信息。每一项信息的作用可以参见上述图3中的步骤302处的描述。
步骤504:所述第二协议层将所述第二数据单元发送给第一协议层的上层协议层。
步骤505:所述第一协议层对多个所述第二数据单元进行网络解码,得到多个第一数据单元。
第一设备的第一协议层在进行网络解码时,采用的网络解码的算法与编码端进行网络编码时采用的网络编码的算法相同。
步骤506:所述第一协议层根据多个所述第一数据单元,确定至少一个第四数据单元。
可选的,所述第一设备的第一协议层还可以将所述至少一个第四数据单元发送给所述第一协议层的上层协议层。
接下来详细说明第一设备的第一协议层根据多个所述第一数据单元(源符号),确定至少一个第四数据单元(普通数据包)的过程。需要说明的是,此过程也可以被称为网路解码过程的一部分。
前述图3中第二设备作为编码端,在步骤301中,已经介绍了根据至少一个第四数据单元(普通数据包),确定多个第一数据单元(源符号)的7种方式。与其对应的,第一设备在作为解码端时,也具有对应的7种方式,来根据多个所述第一数据单元(源符号), 确定至少一个第四数据单元(普通数据包)。
方式1:所述第一协议层将多个所述第一数据单元组成一个第四数据单元。
方式2:所述第一协议层将多个所述第一数据单元组成一个第五数据单元;并在所述第五数据单元中删除补充信息后,作为一个第四数据单元。
方式3:所述第一协议层将多个所述第一数据单元组成一个第五数据单元;并将所述第五数据单元切分为至少两个第四数据单元。
方式4:所述第一协议层将多个所述第一数据单元组成一个第五数据单元;并在所述第五数据单元中删除补充信息后,切分为至少两个第四数据单元。上述将多个所述第一数据单元组成一个第五数据单元或第四数据单元,可以是将多个所述第一数据单元级联(即首尾相连),作为一个第五数据单元或第四数据单元;也可以是将多个所述第一数据单元交织,作为一个第五数据单元或第四数据单元。
如图4a所示,根据多个第二数据单元,进行网络解码,得到4个第一数据单元。将4个第一数据单元级联,并删除补充信息后,切分为4个第四数据单元(PDCP PDU1至PDCP PDU4)。另外,在将多个第一数据单元级联时,解码端可以基于现有技术确定出多个第一数据单元的先后顺序,进而可以将多个第一数据单元首尾相连,作为一个数据单元。
如图4c所示,提供了一种将多个所述第一数据单元交织,作为一个第五数据单元或第四数据单元的示例。解码端可以从下往上推理,先将3个50bit的第一数据单元分别切分为5个10bit的数据单元,然后将3个第一数据单元各自的第一个10bit进行首尾相连,组成第一个30bit的数据单元,将3个第一数据单元各自的第二个10bit进行首尾相连,组成第二个30bit的数据单元,依次类推,组成五个30bit的数据单元。再将这5个30bit的数据单元首尾相连,得到150bit的第五数据单元或第四数据单元。
方式5:所述第一协议层将多个所述第一数据单元中的每个第一数据单元,分别作为一个第四数据单元。
方式6:所述第一协议层将多个所述第一数据单元中的每个第一数据单元,分别删除对应的补充信息后,分别作为一个第四数据单元。
方式7:所述第一协议层将多个所述第一数据单元中的部分第一数据单元,分别作为一个第四数据单元,以及将其余部分第一数据单元分别删除对应的补充信息后,分别作为一个第四数据单元。如图4b所示,根据多个第二数据单元,进行网络解码,得到4个第一数据单元,第1个第一数据单元和第3个第一数据单元分别作为第四数据单元(PDCP PDU1和PDCP PDU3)。第2个数据单元需要删除补充信息后,分别作为一个第四数据单元(PDCP PDU2)。第4个数据单元删除补充信息后,作为一个第四数据单元(PDCP PDU4)。
本申请的一种示例中,所述第四数据单元的包头中可以包括长度信息;所述长度信息可以为所述第四数据单元的长度,或者为所述第四数据单元中的数据域的长度。一般包头的长度是固定的,则可以根据数据域的长度和包头的长度,得出第四数据单元的长度。该示例可以适用于以上7种方式中的任一种方式。
例如针对方式1和方式2,解码端可以根据第四数据单元的长度,确定是采用方式1中的将多个所述第一数据单元级联后,直接作为一个第四数据单元。还是采用方式2中的将多个所述第一数据单元级联,并删除补充信息后,作为一个第四数据单元。
再例如,如图4a所示,解码端需要将一个第五数据单元恢复出单独的每个第四数据单元(普通数据包,例如PDCP PDU)。目前,第四数据单元中并未携带该第四数据单元的长 度信息。则解码端无法恢复出单独的每个第四数据单元。所述第一设备的第一协议层在采用上述方式3:将第五数据单元切分为至少两个第四数据单元时,或者在采用上述方式4:在第五数据单元中删除补充信息后,切分为至少两个第四数据单元时,就可以根据每个第四数据单元的长度,准确地将第五数据单元拆分成每个单独的第四数据单元。
另外,由于现有协议的普通数据包中不包含长度信息,而本申请的第四数据单元中包括长度信息。可选的,所述第四数据单元的包头中还包括:第三指示信息,所述第三指示信息用于指示所述第四数据单元的包头中是否包括所述长度信息。例如可以通过1bit来指示是否包括所述长度信息,例如1bit为1时,表示包括所述长度信息,1bit为0时,表示不包括所述长度信息。或者,1bit为1时,表示不包括所述长度信息,1bit为0时,表示包括所述长度信息。解码端可以根据所述第三指示信息来决定是否对长度信息的字段进行解析。在确定包括长度信息时,可以对长度信息的字段进行解析,以便后续使用。在确定不包括长度信息时,无需再对长度信息的字段进行解析,可以减少处理量。
在另一种示例中,编码端还可以通过通知消息的方式,通知解码端每个第四数据单元的长度。所述第二设备在作为编码端时,还可以向解码端发送第五指示信息,所述第五指示信息用于指示多个第四数据单元中的每个第四数据单元的长度。第四数据单元的长度,可以是长度值,也可以通过每个第四数据单元在第五数据单元中的起始位置和/或终止位置来表示。第一设备在作为解码端时,也可以接收到所述第五指示信息。进而,所述第一设备的第一协议层在采用上述方式3:将第五数据单元切分为至少两个第四数据单元时,或者在采用上述方式4:在第五数据单元中删除补充信息后,切分为至少两个第四数据单元时,就可以根据每个第四数据单元的长度(长度值,或者,在第五数据单元中的起始位置和/或终止位置),准确地将第五数据单元拆分成每个单独的第四数据单元。
针对上述方式5、方式6和方式7,如图4b所示,解码端需要将多个第一数据单元(源符号)恢复出单独的每个第四数据单元(普通数据包,例如PDCP PDU)时,需要知道每个第一数据单元中是否包含补充信息,在包含补充信息的情况下,需要将补充信息删除,才能得到对应的第四数据单元。
在一种示例中,第四数据单元的包头中可以包括所述第四数据单元的长度信息,或者所述第四数据单元中的数据域的长度信息。或者第一设备接收到通过通知消息发送的多个第四数据单元中的每个第四数据单元的长度信息。第一设备的第一协议层就可以根据第四数据单元的长度信息,确定将该第一数据单元作为一个第四数据单元,或者在第一数据单元中去删除补充信息后,作为一个第四数据单元。
再一种示例中,编码端可以通知消息的方式,通知解码端每个第一数据单元中包括的补充信息的长度。所述第二设备在作为编码端,还可以向解码端发送第四指示信息,所述第四指示信息用于指示每个第一数据单元中包括的补充信息的长度。第一设备在作为解码端时,也可以接收到所述第四指示信息。进而,所述第一设备的第一协议层可以是根据第四指示中指示的每个第一数据单元中包括的补充信息的长度,在每个第一数据单元中删除对应长度的补充信息,得到对应的每个第四数据单元。
前述图3中第二设备作为编码端,在步骤301中,介绍了根据至少一个第四数据单元(普通数据包),确定多个第一数据单元(源符号)的7种方式。与其对应的,第一设备在作为解码端时,也介绍了对应的7种方式,来根据多个所述第一数据单元(源符号),确定至少一个第四数据单元(普通数据包)。
协议可以规定编码端采用以上7种方式中的哪种方式,来根据至少一个第四数据单元,确定多个第一数据单元。相应的解码端采用与编码端对应的方式,来根据多个所述第一数据单元,确定至少一个第四数据单元。
编码端(例如第二设备)也可以向解码端(例如第一设备)发送第六指示信息,来指示编码端采用7种方式中的哪种方式来根据至少一个第四数据单元,确定多个第一数据单元。则解码端在接收到第六指示信息后,就可以采用与编码端对应的方式,来根据多个所述第一数据单元,确定至少一个第四数据单元。
另外,如果编码端向解码端发送了用于指示每个第一数据单元中包括的补充信息的长度的第四指示信息,则解码端也可以推理出采用上述方式6或方式7,来根据多个所述第一数据单元,确定至少一个第四数据单元。如果编码端向解码端发送了用于指示每个第四数据单元在第五数据单元中的起始位置和/或终止位置的第五指示信息,则解码端也可以推理出采用上述方式3或方式4,来根据多个所述第一数据单元,确定至少一个第四数据单元。
上述编码端向解码端发送的第四指示信息,和/或第五指示信息,和/或第六指示信息,可以是编码端直接发给解码端的,也可以是或者编码端先发给接入网设备,再由接入网设备发给解码端。例如编码端和解码端为两个终端设备,这两个终端设备之间可以直接通信,也可以是通过接入网设备进行通信。或者编码端和解码端可以为两个IAB节点,这两个IAB节点之间可以直接通信,也可以是通过接入网设备进行通信。
前文介绍了本申请实施例的通信方法,下文中将介绍本申请实施例中的通信装置。方法、装置是基于同一技术构思的,由于方法、装置解决问题的原理相似,因此装置与方法的实施可以相互参见,重复之处不再赘述。
基于与上述通信方法的同一技术构思,如图6所示,提供了一种通信装置600,装置600能够执行上述图5的方法中由第一设备执行的各个步骤。装置600可以为第一设备,也可以为应用于第一设备中的芯片。装置600可以包括:收发模块620,处理模块610,可选的,还包括存储模块630;处理模块610可以分别与存储模块630和收发模块620相连,所述存储模块630也可以与收发模块620相连。
在一种示例中,所述收发模块620,用于接收第三数据单元;所述第三数据单元为无线链路控制RLC层数据单元,所述第三数据单元包括第二协议层包头和第二数据单元;所述处理模块610,用于在确定所述第三数据单元的第二协议层包头中包括第一指示信息时,将所述第二数据单元发送给第一协议层;所述第一指示信息用于指示所述第三数据单元为网络编码数据单元;所述第二协议层为所述第一协议层的下层协议层;以及对多个所述第二数据单元进行网络解码,得到多个第一数据单元。
在一种示例中,所述第二数据单元的所述第一协议层包头中包括以下至少一项:网络编码的类型、网络编码的向量信息、用于指示所述第二数据单元为网络编码数据单元的第二指示信息;所述网络编码的向量信息用于指示所述第二数据单元对应的第一数据单元信息。
在一种示例中,所述处理模块610,还用于根据多个所述第一数据单元,确定至少一个第四数据单元。
在一种示例中,所述处理模块610在用于根据多个所述第一数据单元,确定至少一个 第四数据单元时,具体用于:
将多个所述第一数据单元组成一个第四数据单元;或者
将多个所述第一数据单元组成一个第五数据单元;并在所述第五数据单元中删除补充信息后,作为一个第四数据单元;或者
将多个所述第一数据单元组成一个第五数据单元;并将所述第五数据单元切分为至少两个第四数据单元;或者
将多个所述第一数据单元组成一个第五数据单元;并在所述第五数据单元中删除补充信息后,切分为至少两个第四数据单元;或者
将多个所述第一数据单元中的每个第一数据单元,分别作为一个第四数据单元;或者
将多个所述第一数据单元中的每个第一数据单元,分别删除对应的补充信息后,分别作为一个第四数据单元;或者
将多个所述第一数据单元中的部分第一数据单元,分别作为一个第四数据单元,以及将其余部分第一数据单元分别删除对应的补充信息后,分别作为一个第四数据单元。
在一种示例中,所述第四数据单元的包头中包括长度信息;所述长度信息为所述第四数据单元的长度,或者所述第四数据单元中的数据域的长度。
在一种示例中,所述第四数据单元的包头中还包括:第三指示信息,所述第三指示信息用于指示所述第四数据单元的包头中是否包括所述长度信息。
在一种示例中,所述收发模块620,还用于接收第五指示信息,所述第五指示信息用于指示所述多个第四数据单元中的每个第四数据单元的长度。
在一种示例中,所述处理模块610,可以用于根据每个所述第四数据单元的长度,将所述第五数据单元切分为至少两个第四数据单元;或者,根据每个所述第四数据单元的长度,将所述第五数据单元删除补充信息后的数据单元切分为至少两个第四数据单元。
在一种示例中,所述收发模块620,还用于接收第四指示信息,所述第四指示信息用于指示每个第一数据单元中包括的所述补充信息的长度。
在一种示例中,所述存储模块630,用于存储网络解码的算法。
存储模块630可以包括一个或者多个存储器,存储器可以是一个或者多个设备、电路中用于存储程序或者数据的器件。存储模块630可以存储第一设备侧的方法的计算机执行指令,以使处理模块610执行上述实施例中第一设备侧的方法。存储模块630可以是寄存器、缓存或者RAM等,存储模块630可以和处理模块610集成在一起。存储模块630可以是ROM或者可存储静态信息和指令的其他类型的静态存储设备,存储模块630可以与处理模块610相独立。
所述收发模块620可以是输入或者输出接口、管脚或者电路等。
基于与上述通信方法的同一技术构思,如图7所示,提供了一种通信装置700,装置700能够执行上述图3的方法中由第二设备执行的各个步骤,为了避免冗余,此处不再详述。装置700可以为第二设备,也可以为应用于第二设备中的芯片。装置700可以包括:收发模块720,处理模块710,可选的,还包括存储模块730;处理模块710可以分别与存储模块730和收发模块720相连,所述存储模块730也可以与收发模块720相连。
在一种示例中,所述处理模块710,用于对多个第一数据单元进行网络编码,得到多个第二数据单元;以及分别对每个所述第二数据单元添加第二协议层包头,得到对应的每 个第三数据单元,所述第三数据单元的所述第二协议层包头中包括:第一指示信息,所述第一指示信息用于指示所述第三数据单元为网络编码数据单元;所述第二协议层为所述第一协议层的下层协议层。所述第三数据单元为无线链路控制RLC层数据单元。
在一种示例中,所述第二数据单元的所述第一协议层包头中包括以下至少一项:网络编码的类型、网络编码的向量信息、用于指示所述第二数据单元为网络编码数据单元的第二指示信息;所述网络编码的向量信息用于指示所述第二数据单元对应的第一数据单元信息。
在一种示例中,所述处理模块710,还可以用于针对多个所述第三数据单元中的每个第三数据单元,基于所述第二指示信息,在所述第二协议层的包头中添加路径标识信息。
在一种示例中,所述处理模块710,还用于根据至少一个第四数据单元,确定多个所述第一数据单元。
在一种示例中,所述处理模块710在用于根据至少一个第四数据单元,确定多个所述第一数据单元时,具体用于:
根据一个所述第四数据单元确定出多个所述第一数据单元;或
将一个所述第四数据单元加补充信息后,作为一个第五数据单元,并根据所述第五数据单元确定出多个所述第一数据单元;或
将至少两个第四数据单元级联后,作为一个第五数据单元;并根据所述第五数据单元确定出多个所述第一数据单元;或者
将至少两个第四数据单元级联,并添加补充信息后,作为一个第五数据单元;并根据所述第五数据单元确定出多个所述第一数据单元;或者
将至少两个第四数据单元中的每个第四数据单元,分别作为一个所述第一数据单元;或者
将至少两个第四数据单元中的每个第四数据单元,分别添加对应的补充信息后,分别作为一个所述第一数据单元;或者
将至少两个第四数据单元中的部分第四数据单元,分别添加对应的补充信息后,分别作为一个所述第一数据单元,以及将其余部分第四数据单元分别作为一个所述第一数据单元。
在一种示例中,所述处理模块710,还用于基于设置的时间长度内接收到的第四数据单元,确定第一数据单元;或根据n个第四数据单元,确定第一数据单元,其中,n个第四数据单元的长度之和大于或等于设置的数据单元长度,n-1个第四数据单元的长度之和小于设置的数据单元长度;或根据设置的第四数据单元的数量阈值,确定第一数据单元。
在一种示例中,所述第四数据单元的包头中包括长度信息;所述长度信息为所述第四数据单元的长度,或者所述第四数据单元中的数据域的长度。
在一种示例中,所述第四数据单元的包头中还包括:第三指示信息,所述第三指示信息用于指示所述第四数据单元的包头中是否包括所述长度信息。
在一种示例中,所述收发模块720,用于发送第五指示信息,所述第五指示信息用于指示所述多个第四数据单元中的每个第四数据单元的长度。
在一种示例中,所述收发模块720,用于发送第四指示信息,所述第四指示信息用于指示每个第一数据单元中包括的所述补充信息的长度。
在一种示例中,所述存储模块730,用于存储网络编码的算法。
存储模块730可以包括一个或者多个存储器,存储器可以是一个或者多个设备、电路中用于存储程序或者数据的器件。存储模块730可以存储第二设备侧的方法的计算机执行指令,以使处理模块710执行上述实施例中第二设备侧的方法。存储模块730可以是寄存器、缓存或者RAM等,存储模块730可以和处理模块710集成在一起。存储模块730可以是ROM或者可存储静态信息和指令的其他类型的静态存储设备,存储模块730可以与处理模块710相独立。
所述收发模块720可以是输入或者输出接口、管脚或者电路等。
图8是本申请实施例的通信装置800的示意性框图。应理解,所述装置800能够执行上述图5的方法中由第一设备执行的各个步骤,为了避免冗余,此处不再详述。装置800包括:处理器810和接口电路820,可选的,还包括存储器830。该接口电路,可以用于接收程序指令并传输至所述处理器,或者,该接口电路可以用于该装置与其他通信设备进行通信交互,比如交互控制信令和/或业务数据等。该接口电路可以为代码和/或数据读写接口电路,或者,该接口电路可以为通信处理器与收发机之间的信号传输接口电路。所述处理器810和所述存储器830之间电耦合。
示例的,存储器830,用于存储计算机程序;所述处理器810,可以用于调用所述存储器中存储的计算机程序或指令,执行上述的通信的方法,或者通过所述接口电路820执行上述的通信的方法。
图6中的处理模块610可以通过处理器810来实现,收发模块620可以通过接口电路820来实现,存储模块630可以通过存储器830来实现。
图9是本申请实施例的通信装置900的示意性框图。应理解,所述装置900能够执行上述图3的方法中由第二设备执行的各个步骤,为了避免冗余,此处不再详述。装置900包括:处理器910和接口电路920,可选的,还包括存储器930。该接口电路,可以用于接收程序指令并传输至所述处理器,或者,该接口电路可以用于该装置与其他通信设备进行通信交互,比如交互控制信令和/或业务数据等。该接口电路可以为代码和/或数据读写接口电路,或者,该接口电路可以为通信处理器与收发机之间的信号传输接口电路。所述处理器910和所述存储器930之间电耦合。
示例的,存储器930,用于存储计算机程序;所述处理器910,可以用于调用所述存储器中存储的计算机程序或指令,执行上述的通信的方法,或者通过所述接口电路920执行上述的通信的方法。
图7中的处理模块710可以通过处理器910来实现,收发模块720可以通过接口电路920来实现,存储模块730可以通过存储器930来实现。
上述的处理器可以是中央处理器(central processing unit,CPU),网络处理器(network processor,NP)或者CPU和NP的组合。处理器还可以进一步包括硬件芯片或其他通用处理器。上述硬件芯片可以是专用集成电路(application-specific integrated circuit,ASIC),可编程逻辑器件(programmable logic device,PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device,CPLD),现场可编程逻辑门阵列(field-programmable gate array,FPGA),通用阵列逻辑(generic array logic,GAL)及其 他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等或其任意组合。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解,本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)。应注意,本申请描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例所述的收发装置、接口电路、或者收发器中可以包括单独的发送器,和/或,单独的接收器,也可以是发送器和接收器集成一体。收发装置、接口电路、或者收发器可以在相应的处理器的指示下工作。可选的,发送器可以对应物理设备中发射机,接收器可以对应物理设备中的接收机。
本申请实施例还提供了一种计算机可读存储介质,存储有计算机程序,该计算机程序被计算机执行时,可以使得所述计算机用于执行上述通信的方法。
本申请实施例还提供了一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机可以执行上述提供的通信的方法。
本申请实施例还提供了一种通信的系统,所述通信系统包括:执行上述通信的方法的第一设备和第二设备。
本领域内的技术人员应明白,本申请的实施例可提供为方法、系统、或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包括有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本申请的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然,本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请实施例的精神和范围。这样,倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包括这些改动和变型在内。

Claims (64)

  1. 一种通信的方法,其特征在于,所述方法包括:
    第一设备的第二协议层接收第三数据单元;所述第三数据单元为无线链路控制RLC层数据单元,并包括第二协议层包头和第二数据单元;
    所述第二协议层在确定所述第三数据单元的所述第二协议层包头中包括第一指示信息时,将所述第二数据单元发送给第一协议层;所述第一指示信息用于指示所述第三数据单元为网络编码数据单元;所述第二协议层为所述第一协议层的下层协议层;
    所述第一协议层对多个所述第二数据单元进行网络解码,得到多个第一数据单元。
  2. 如权利要求1所述的方法,其特征在于,所述第二数据单元的所述第一协议层包头中包括以下至少一项:
    网络编码的类型、网络编码的向量信息、用于指示所述第二数据单元为网络编码数据单元的第二指示信息;
    所述网络编码的向量信息用于指示所述第二数据单元对应的第一数据单元信息。
  3. 如权利要求1或2所述的方法,其特征在于,还包括:
    所述第一协议层根据多个所述第一数据单元,确定至少一个第四数据单元。
  4. 如权利要求3所述的方法,其特征在于,所述第一协议层根据多个所述第一数据单元,确定至少一个第四数据单元,包括:
    所述第一协议层将多个所述第一数据单元组成一个第四数据单元;或者
    所述第一协议层将多个所述第一数据单元组成一个第五数据单元;并在所述第五数据单元中删除补充信息后,作为一个第四数据单元;或者
    所述第一协议层将多个所述第一数据单元组成一个第五数据单元;并将所述第五数据单元切分为至少两个第四数据单元;或者
    所述第一协议层将多个所述第一数据单元组成一个第五数据单元;并在所述第五数据单元中删除补充信息后,切分为至少两个第四数据单元;或者
    所述第一协议层将多个所述第一数据单元中的每个第一数据单元,分别作为一个第四数据单元;或者
    所述第一协议层将多个所述第一数据单元中的每个第一数据单元,分别删除对应的补充信息后,分别作为一个第四数据单元;或者
    所述第一协议层将多个所述第一数据单元中的部分第一数据单元,分别作为一个第四数据单元,以及将其余部分第一数据单元分别删除对应的补充信息后,分别作为一个第四数据单元。
  5. 如权利要求4所述的方法,其特征在于,所述第四数据单元的包头中包括长度信息;所述长度信息为所述第四数据单元的长度,或者所述第四数据单元中的数据域的长度。
  6. 如权利要求5所述的方法,其特征在于,所述第四数据单元的包头中还包括:第三指示信息,所述第三指示信息用于指示所述第四数据单元的包头中是否包括所述长度信息。
  7. 如权利要求4所述的方法,其特征在于,还包括:
    所述第一设备接收第五指示信息,所述第五指示信息用于指示所述多个第四数据单元中的每个第四数据单元的长度。
  8. 如权利要求5或7所述的方法,其特征在于,所述第一协议层将所述第五数据单元切分为至少两个第四数据单元,包括:
    所述第一协议层根据每个所述第四数据单元的长度,将所述第五数据单元切分为至少两个第四数据单元。
  9. 如权利要求5或7所述的方法,其特征在于,所述第一协议层在所述第五数据单元中删除补充信息后,切分为至少两个第四数据单元,包括:
    所述第一协议层根据每个所述第四数据单元的长度,将所述第五数据单元删除补充信息后的数据单元切分为至少两个第四数据单元。
  10. 如权利要求4所述的方法,其特征在于,还包括:
    所述第一设备接收第四指示信息,所述第四指示信息用于指示每个第一数据单元中包括的所述补充信息的长度。
  11. 如权利要求3所述的方法,其特征在于,所述第一数据单元为源符号,所述第二数据单元为编码符号,所述第三数据单元为网络编码数据单元,第四数据单元为非网络编码的数据单元。
  12. 如权利要求1-11任一项所述的方法,其特征在于,所述第三数据单元的所述第二协议层的包头中还包括:路径标识信息。
  13. 如权利要求3或4所述的方法,其特征在于,还包括:
    所述第一设备接收第六指示信息,所述第六指示信息用于指示编码端根据至少一个第四数据单元,确定多个所述第一数据单元的方式。
  14. 如权利要求4所述的方法,其特征在于,在所述第五数据单元中删除补充信息后,切分为至少两个第四数据单元,包括:
    根据每个所述第四数据单元的长度,将所述第五数据单元删除补充信息后的数据单元切分为至少两个第四数据单元。
  15. 如权利要求4所述的方法,其特征在于,将多个所述第一数据单元中的部分或全部第一数据单元分别删除对应的补充信息后,分别作为一个第四数据单元,包括:
    根据所述第四数据单元的长度,在第一数据单元上提取出第四数据单元。
  16. 一种通信的方法,其特征在于,所述方法包括:
    第二设备的第一协议层对多个第一数据单元进行网络编码,得到多个第二数据单元;
    第二设备的第二协议层分别对每个所述第二数据单元添加第二协议层包头,得到对应的每个第三数据单元,所述第三数据单元的所述第二协议层包头中包括:第一指示信息,所述第一指示信息用于指示所述第三数据单元为网络编码数据单元;所述第三数据单元为无线链路控制RLC层数据单元;所述第二协议层为所述第一协议层的下层协议层。
  17. 如权利要求16所述的方法,其特征在于,所述第二数据单元的所述第一协议层包头中包括以下至少一项:
    网络编码的类型、网络编码的向量信息、用于指示所述第二数据单元为网络编码数据单元的第二指示信息;
    所述网络编码的向量信息用于指示所述第二数据单元对应的第一数据单元信息。
  18. 如权利要求17所述的方法,其特征在于,还包括:
    所述第二协议层针对多个所述第三数据单元中的每个第三数据单元,基于所述第二指示信息,在所述第二协议层的包头中添加路径标识信息。
  19. 如权利要求16-18任一项所述的方法,其特征在于,还包括:
    所述第一协议层根据至少一个第四数据单元,确定多个所述第一数据单元。
  20. 如权利要求19所述的方法,其特征在于,所述第一协议层根据至少一个第四数据单元,确定多个所述第一数据单元,包括:
    所述第一协议层根据一个所述第四数据单元确定出多个所述第一数据单元;或
    所述第一协议层将一个所述第四数据单元加补充信息后,作为一个第五数据单元,并根据所述第五数据单元确定出多个所述第一数据单元;或
    所述第一协议层将至少两个第四数据单元级联后,作为一个第五数据单元;并根据所述第五数据单元确定出多个所述第一数据单元;或者
    所述第一协议层将至少两个第四数据单元级联,并添加补充信息后,作为一个第五数据单元;并根据所述第五数据单元确定出多个所述第一数据单元;或者
    所述第一协议层将至少两个第四数据单元中的每个第四数据单元,分别作为一个所述第一数据单元;或者
    所述第一协议层将至少两个第四数据单元中的每个第四数据单元,分别添加对应的补充信息后,分别作为一个所述第一数据单元;或者
    所述第一协议层将至少两个第四数据单元中的部分第四数据单元,分别添加对应的补充信息后,分别作为一个所述第一数据单元,以及将其余部分第四数据单元分别作为一个所述第一数据单元。
  21. 如权利要求19或20所述的方法,其特征在于,还包括:
    所述第一协议层基于设置的时间长度内接收到的第四数据单元,确定第一数据单元;或
    所述第一协议层根据n个第四数据单元,确定第一数据单元,其中,n个第四数据单元的长度之和大于或等于设置的数据单元长度,n-1个第四数据单元的长度之和小于设置的数据单元长度;或
    所述第一协议层根据设置的第四数据单元的数量阈值,确定第一数据单元。
  22. 如权利要求21所述的方法,其特征在于,所述时间长度,和/或设置的数据单元长度,和/或第四数据单元的数量阈值,是针对所述第二设备中的每个承载分别配置。
  23. 如权利要求19-22任一项所述的方法,其特征在于,所述第四数据单元的包头中包括长度信息;所述长度信息为所述第四数据单元的长度,或者所述第四数据单元中的数据域的长度。
  24. 如权利要求23所述的方法,其特征在于,所述第四数据单元的包头中还包括:第三指示信息,所述第三指示信息用于指示所述第四数据单元的包头中是否包括所述长度信息。
  25. 如权利要求19-22任一项所述的方法,其特征在于,还包括:
    所述第二设备发送第五指示信息,所述第五指示信息用于指示所述多个第四数据单元中的每个第四数据单元的长度。
  26. 如权利要求19-22任一项所述的方法,其特征在于,还包括:
    所述第二设备发送第四指示信息,所述第四指示信息用于指示每个第一数据单元中包括的所述补充信息的长度。
  27. 如权利要求19所述的方法,其特征在于,所述第一数据单元为源符号,所述第 二数据单元为编码符号,所述第三数据单元为网络编码数据单元,第四数据单元为非网络编码的数据单元。
  28. 如权利要求19或20所述的方法,其特征在于,还包括:
    所述第二设备发送第六指示信息,所述第六指示信息用于指示编码端根据至少一个第四数据单元,确定多个所述第一数据单元的方式。
  29. 一种通信的装置,其特征在于,所述装置包括:
    收发模块,用于接收第三数据单元;所述第三数据单元为无线链路控制RLC层数据单元,并包括第二协议层包头和第二数据单元;
    处理模块,用于在确定所述第三数据单元的所述第二协议层包头中包括第一指示信息时,将所述第二数据单元发送给第一协议层;所述第一指示信息用于指示所述第三数据单元为网络编码数据单元;所述第二协议层为所述第一协议层的下层协议层;并且对多个所述第二数据单元进行网络解码,得到多个第一数据单元。
  30. 如权利要求29所述的装置,其特征在于,所述第二数据单元的所述第一协议层包头中包括以下至少一项:
    网络编码的类型、网络编码的向量信息、用于指示所述第二数据单元为网络编码数据单元的第二指示信息;
    所述网络编码的向量信息用于指示所述第二数据单元对应的第一数据单元信息。
  31. 如权利要求29或30所述的装置,其特征在于,所述处理模块,还用于根据多个所述第一数据单元,确定至少一个第四数据单元。
  32. 如权利要求31所述的装置,其特征在于,所述处理模块用于:
    将多个所述第一数据单元组成一个第四数据单元;或者将多个所述第一数据单元组成一个第五数据单元,并在所述第五数据单元中删除补充信息后,作为一个第四数据单元;或者将多个所述第一数据单元组成一个第五数据单元,并将所述第五数据单元切分为至少两个第四数据单元;或者将多个所述第一数据单元组成一个第五数据单元,并在所述第五数据单元中删除补充信息后,切分为至少两个第四数据单元;或者将多个所述第一数据单元中的每个第一数据单元,分别作为一个第四数据单元;或者将多个所述第一数据单元中的每个第一数据单元,分别删除对应的补充信息后,分别作为一个第四数据单元;或者将多个所述第一数据单元中的部分第一数据单元,分别作为一个第四数据单元,以及将其余部分第一数据单元分别删除对应的补充信息后,分别作为一个第四数据单元。
  33. 如权利要求32所述的装置,其特征在于,所述第四数据单元的包头中包括长度信息;所述长度信息为所述第四数据单元的长度,或者所述第四数据单元中的数据域的长度。
  34. 如权利要求33所述的装置,其特征在于,所述第四数据单元的包头中还包括:第三指示信息,所述第三指示信息用于指示所述第四数据单元的包头中是否包括所述长度信息。
  35. 如权利要求32所述的装置,其特征在于,所述收发模块,还用于接收第五指示信息,所述第五指示信息用于指示所述多个第四数据单元中的每个第四数据单元的长度。
  36. 如权利要求33或35所述的装置,其特征在于,所述处理模块,在用于将所述第五数据单元切分为至少两个第四数据单元时,具体用于:根据每个所述第四数据单元的长度,将所述第五数据单元切分为至少两个第四数据单元。
  37. 如权利要求33或35所述的装置,其特征在于,所述处理模块,在用于在所述第五数据单元中删除补充信息后,切分为至少两个第四数据单时,具体用于:根据每个所述第四数据单元的长度,将所述第五数据单元删除补充信息后的数据单元切分为至少两个第四数据单元。
  38. 如权利要求32所述的装置,其特征在于,所述收发模块,还用于接收第四指示信息,所述第四指示信息用于指示每个第一数据单元中包括的所述补充信息的长度。
  39. 如权利要求31所述的装置,其特征在于,所述第一数据单元为源符号,所述第二数据单元为编码符号,所述第三数据单元为网络编码数据单元,第四数据单元为非网络编码的数据单元。
  40. 如权利要求29-39任一项所述的装置,其特征在于,所述第三数据单元的所述第二协议层的包头中还包括:路径标识信息。
  41. 如权利要求31或32所述的装置,其特征在于,所述收发模块,还用于接收第六指示信息,所述第六指示信息用于指示编码端根据至少一个第四数据单元,确定多个所述第一数据单元的方式。
  42. 如权利要求32所述的装置,其特征在于,所述处理模块在用于在所述第五数据单元中删除补充信息后,切分为至少两个第四数据单元时,具体用于:根据每个所述第四数据单元的长度,将所述第五数据单元删除补充信息后的数据单元切分为至少两个第四数据单元。
  43. 如权利要求32所述的装置,其特征在于,所述处理模块,在用于将多个所述第一数据单元中的部分或全部第一数据单元分别删除对应的补充信息后,分别作为一个第四数据单元时,具体用于:根据所述第四数据单元的长度,在第一数据单元上提取出第四数据单元。
  44. 一种通信的装置,其特征在于,所述装置包括:
    处理模块,用于对多个第一数据单元进行网络编码,得到多个第二数据单元,并分别对每个所述第二数据单元添加第二协议层包头,得到对应的每个第三数据单元,所述第三数据单元的所述第二协议层包头中包括:第一指示信息,所述第一指示信息用于指示所述第三数据单元为网络编码数据单元;所述第三数据单元为无线链路控制RLC层数据单元;所述第二协议层为所述第一协议层的下层协议层。
  45. 如权利要求44所述的装置,其特征在于,所述第二数据单元的所述第一协议层包头中包括以下至少一项:
    网络编码的类型、网络编码的向量信息、用于指示所述第二数据单元为网络编码数据单元的第二指示信息;
    所述网络编码的向量信息用于指示所述第二数据单元对应的第一数据单元信息。
  46. 如权利要求45所述的装置,其特征在于,所述处理模块,还用于针对多个所述第三数据单元中的每个第三数据单元,基于所述第二指示信息,在所述第二协议层的包头中添加路径标识信息。
  47. 如权利要求44-46任一项所述的装置,其特征在于,所述处理模块,还用于根据至少一个第四数据单元,确定多个所述第一数据单元。
  48. 如权利要求47所述的装置,其特征在于,所述处理模块用于:
    根据一个所述第四数据单元确定出多个所述第一数据单元;或者将一个所述第四数据 单元加补充信息后,作为一个第五数据单元,并根据所述第五数据单元确定出多个所述第一数据单元;或者将至少两个第四数据单元级联后,作为一个第五数据单元,并根据所述第五数据单元确定出多个所述第一数据单元;或者将至少两个第四数据单元级联,并添加补充信息后,作为一个第五数据单元,并根据所述第五数据单元确定出多个所述第一数据单元;或者将至少两个第四数据单元中的每个第四数据单元,分别作为一个所述第一数据单元;或者将至少两个第四数据单元中的每个第四数据单元,分别添加对应的补充信息后,分别作为一个所述第一数据单元;或者将至少两个第四数据单元中的部分第四数据单元,分别添加对应的补充信息后,分别作为一个所述第一数据单元,以及将其余部分第四数据单元分别作为一个所述第一数据单元。
  49. 如权利要求47或48所述的装置,其特征在于,所述处理模块,还用于基于设置的时间长度内接收到的第四数据单元,确定第一数据单元;或者所述第一协议层根据n个第四数据单元,确定第一数据单元,其中,n个第四数据单元的长度之和大于或等于设置的数据单元长度,n-1个第四数据单元的长度之和小于设置的数据单元长度;或者所述第一协议层根据设置的第四数据单元的数量阈值,确定第一数据单元。
  50. 如权利要求49所述的装置,其特征在于,所述时间长度,和/或设置的数据单元长度,和/或第四数据单元的数量阈值,是针对所述第二设备中的每个承载分别配置。
  51. 如权利要求47-50任一项所述的装置,其特征在于,所述第四数据单元的包头中包括长度信息;所述长度信息为所述第四数据单元的长度,或者所述第四数据单元中的数据域的长度。
  52. 如权利要求51所述的装置,其特征在于,所述第四数据单元的包头中还包括:第三指示信息,所述第三指示信息用于指示所述第四数据单元的包头中是否包括所述长度信息。
  53. 如权利要求47-50任一项所述的装置,其特征在于,还包括:
    收发模块,用于发送第五指示信息,所述第五指示信息用于指示所述多个第四数据单元中的每个第四数据单元的长度。
  54. 如权利要求47-50任一项所述的装置,其特征在于,还包括:
    收发模块,用于发送第四指示信息,所述第四指示信息用于指示每个第一数据单元中包括的所述补充信息的长度。
  55. 如权利要求47所述的装置,其特征在于,所述第一数据单元为源符号,所述第二数据单元为编码符号,所述第三数据单元为网络编码数据单元,第四数据单元为非网络编码的数据单元。
  56. 如权利要求47或48所述的装置,其特征在于,还包括:
    收发模块,用于发送第六指示信息,所述第六指示信息用于指示编码端根据至少一个第四数据单元,确定多个所述第一数据单元的方式。
  57. 一种通信装置,其特征在于,所述装置包括:处理器和存储器;所述处理器和所述存储器之间电偶合;
    所述存储器,用于存储计算机程序指令;
    所述处理器,用于执行所述存储器中的部分或者全部计算机程序指令,当所述部分或者全部计算机程序指令被执行时,使得所述通信装置实现如权利要求1-15任一项所述的方法。
  58. 如权利要求57所述的装置,其特征在于,还包括:
    收发器,用于发送所述处理器处理后的信号,或者接收信号输入给所述处理器。
  59. 一种通信装置,其特征在于,所述装置包括:处理器和存储器;所述处理器和所述存储器之间电偶合;
    所述存储器,用于存储计算机程序指令;
    所述处理器,用于执行所述存储器中的部分或者全部计算机程序指令,当所述部分或者全部计算机程序指令被执行时,使得所述通信装置实现如权利要求16-28任一项所述的方法。
  60. 如权利要求59所述的装置,其特征在于,还包括:
    收发器,用于发送所述处理器处理后的信号,或者接收信号输入给所述处理器。
  61. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有计算机可读指令,当计算机读取并执行所述计算机可读指令时,使得计算机执行如权利要求1-15任一项所述的方法,或者实现如权利要求16-28任一项所述的方法。
  62. 一种计算机程序产品,其特征在于,所述计算机程序产品包括:计算机程序代码,当所述计算机程序代码在计算机上运行时,使得计算机执行如权利要求1-15任一项所述的方法,或者执行如权利要求16-28任一项所述的方法。
  63. 一种通信的系统,其特征在于,所述系统包括:执行如权利要求57-58任一项所述方法的通信装置,和执行权利要求59-60任一项所述方法的通信装置。
  64. 一种通信的装置,其特征在于,所述装置用于执行如权利要求1-15任一项所述的方法,或者执行如权利要求16-28任一项所述的方法。
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