WO2020135815A1 - Procédé et dispositif de transmission de données, équipement utilisateur, et support de stockage informatique - Google Patents

Procédé et dispositif de transmission de données, équipement utilisateur, et support de stockage informatique Download PDF

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Publication number
WO2020135815A1
WO2020135815A1 PCT/CN2019/129640 CN2019129640W WO2020135815A1 WO 2020135815 A1 WO2020135815 A1 WO 2020135815A1 CN 2019129640 W CN2019129640 W CN 2019129640W WO 2020135815 A1 WO2020135815 A1 WO 2020135815A1
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data
modulation data
resource
layer
receiving
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PCT/CN2019/129640
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English (en)
Chinese (zh)
Inventor
龚政委
陈雁
吴亮
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to a data transmission method and device, user equipment, and computer storage media.
  • Time-frequency broadcast transmission based on layered multiplexing can realize the broadcast transmission after superimposing the modulation symbols corresponding to two layers of data streams on the same resource unit, where the two-layer modulation symbols are the basic layer modulation symbols and Enhancement layer modulation symbols, different layer modulation symbols carry different quality of service (QoS) bit data, and achieve different levels of protection for different QoS bit data, thereby ensuring that the basic layer information has more coverage than the enhancement layer information It is a typical multi-level efficient broadcast mechanism.
  • QoS quality of service
  • multi-user superposition transmission is to superimpose broadcast transmission after allocating different transmission power to the modulation data of the "far-near" user at the sending end, enabling the "near" end user to be on the receiving side
  • MUST multi-user superposition transmission
  • the technology to eliminate the interference of user information at the "far” end and to ensure that the information of multiple users is broadcast on the same resource unit.
  • LDM-based broadcast transmission is based on two predefined transmission parameters for superimposed transmission of two parts of information. This transmission method is not flexible enough and only It is suitable for the scenario of one broadcast transmission; MUST is suitable for the same node to send different information to different receiving nodes. For different receiving nodes, the useful information in different information is different, that is, for different receiving nodes, the different information contains useless information, not It is suitable for broadcasting and sending multiple useful and different information to multiple nodes on the same resource unit.
  • the present application discloses a data transmission method, related equipment, and a computer storage medium, which can broadcast and transmit multi-layer data in a layered modulation and cooperative forwarding manner, thereby improving the broadcast transmission efficiency of the multi-layer data.
  • the present application provides a data transmission method, the method including:
  • the receiving node receives the first hierarchical modulation data from the sending node, wherein the first hierarchical modulation data includes k-layer data, and each layer of data in the first hierarchical modulation data is independently coded and independent Power handling, k is an integer greater than or equal to 2;
  • second layered modulation data is sent, and the second layered modulation data includes the predetermined decoded i-layer data, where i is a positive integer less than or equal to k.
  • the sending node modulates the data to be sent through the layered modulation technique to obtain the first layered modulated data containing multiple layers of data, and then broadcasts it.
  • the receiving node After receiving the first layered modulated data, the receiving node in the broadcast area , When the receiving node determines that the predetermined layer i data in the first layer modulation data is correctly decoded, it forwards the second layer modulation data including the predetermined layer i data, through layer modulation and cooperative forwarding Multi-layer data is broadcast and transmitted in a manner that can improve the efficiency of multi-layer data broadcast transmission.
  • any one or more nodes in the first node determine that the predetermined i-layer data in the received data is correctly decoded
  • the second layered modulated data will also be forwarded, so that the second layered modulated data can be forwarded through different nodes.
  • Layering modulated data to obtain layered modulated data and broadcasting the layered modulated data in a manner of multiple nodes multiple cooperative forwarding, so that user equipment at the edge of the broadcast area can receive the layered forwarding from other nodes Modulate data without the source node transmitting at a time even if the user equipment at the edge of the broadcast area correctly receives the layered modulation data, which can reduce the transmission power of the source node, reduce interference between broadcast channels, and improve the efficiency of multi-layer data transmission .
  • the method before the receiving node receives the first hierarchical modulation data sent by the sending node, the method further includes:
  • the first received resource information indicating a first received resource for receiving the first hierarchical modulation data, wherein the first received resource information is carried in pre-configured signaling;
  • the receiving node receiving the first hierarchical modulation data from the sending node includes:
  • the receiving node receives the first layered modulation data based on the first receiving resource.
  • the method before the receiving node receives the first hierarchical modulation data from the sending node, the method further includes :
  • the receiving node receives first dynamic control information, and the first dynamic control information includes data layer number information of the first hierarchical modulation data and a resource indication of a first reception resource for receiving the first hierarchical modulation data ;
  • the receiving node receiving the first hierarchical modulation data from the sending node includes:
  • the receiving node receives the first layered modulation data based on the first receiving resource.
  • the sending the second layered modulation data includes:
  • the receiving node sends the second hierarchical modulation data based on the first sending resource, where the frequency domain resource corresponding to the first sending resource is the same as the frequency domain resource corresponding to the first receiving resource, the first The position of the time domain resource corresponding to the sending resource in the unit time resource is the same as the position of the time domain resource corresponding to the first receiving resource in the unit time resource, and the position of the time domain resource in the unit time resource Refers to the information of the basic unit corresponding to the time domain resource within the unit time resource after the unit time resource is divided according to the basic unit of the time domain resource.
  • the receiving node sends second dynamic control information based on a second transmission resource, where the content of the second dynamic control information is the same as the content of the first dynamic control information, and the frequency domain corresponding to the second transmission resource
  • the resource is the same as the frequency domain resource occupied by the first dynamic control information, the position of the time domain resource corresponding to the second transmission resource within the unit time resource and the time domain resource occupied by the first dynamic control information
  • the position within the unit time resource is the same, and the position of the time domain resource within the unit time resource refers to the unit time resource is divided according to the basic unit of the time domain resource, and the time domain resource is within the unit time resource Corresponding basic unit information.
  • the first hierarchical modulation data is determined In the case where the predetermined i-layer data in FIG. cannot be decoded correctly, the receiving node receives third-layer modulation data, and the third-layer modulation data includes the predetermined in the first-layer modulation data I layer data.
  • the receiving node may receive the data sent by multiple sending nodes multiple times, and then merge the data received multiple times to obtain the predetermined i-layer data.
  • the first hierarchical modulation data includes a source First location information of the node, where the first location information represents a first geographic location where the source node generates the first hierarchical modulation data;
  • the sending of second layer modulation data includes:
  • the receiving node obtains a second geographic location, where the second geographic location represents the geographic location of the receiving node;
  • the receiving node When the distance between the first geographic location and the second geographic location is less than a preset distance, the receiving node sends the second hierarchical modulation data, where the second hierarchical modulation data Including the first location information.
  • sending the second layer of modulated data further includes:
  • the receiving node When the number of times of sending the second layered modulation data is less than or equal to the predetermined number of forwarding times, the receiving node sends the second layered modulation data; or,
  • the receiving node When there are available transmission resources for transmitting the second hierarchical modulation data, the receiving node transmits the second points on the available transmission resources for transmitting the second hierarchical modulation data Layer modulation data.
  • the distance between the receiving node and the source node when generating hierarchical modulation data or the number of times that the data to be forwarded by the receiving node has been forwarded, etc. is limited to prevent the data from being forwarded indefinitely, resulting in reception The waste of node resources.
  • an embodiment of the present application provides a data transmission device.
  • the device includes:
  • a receiving unit configured to receive first layered modulation data from a sending node, wherein the first layered modulation data includes k-layer data, and each layer of data in the first layered modulation data is independently encoded And independent power processing, k is an integer greater than or equal to 2;
  • a processing unit configured to determine whether predetermined i-layer data in the first layered modulation data can be correctly decoded, where i is a positive integer less than or equal to k;
  • a sending unit when the processing unit determines that the predetermined i-layer data in the first layered modulation data is correctly decoded, sending second layered modulation data, the second layered modulation data including the correct The decoded predetermined i-layer data.
  • the receiving unit is further configured to: before receiving the first hierarchical modulation data from the sending node, receive the first received resource information, the The first received resource information indicates a first received resource for receiving the first layered modulation data, where the first received resource information is carried in pre-configured signaling;
  • the receiving unit receives the first hierarchical modulation data from the sending node, including:
  • the receiving unit receives the first layered modulation data based on the first receiving resource.
  • the receiving unit is further configured to: receive the first layered modulation from the sending node Before the data, the receiving node receives first dynamic control information, the first dynamic control information includes data layer number information of the first layered modulation data and a first receiving resource for receiving the first layered modulation data Resource instructions;
  • the receiving unit receives the first hierarchical modulation data from the sending node, including:
  • the receiving unit receives the first layered modulation data based on the first receiving resource.
  • the sending unit is further configured to send the second hierarchical modulation data based on a first sending resource, where the frequency domain resource corresponding to the first sending resource is the same as the frequency domain resource corresponding to the first receiving resource ,
  • the position of the time domain resource corresponding to the first sending resource in the unit time resource is the same as the position of the time domain resource corresponding to the first receiving resource in the unit time resource, and the time domain resource is in unit time
  • the position in the resource refers to the information of the basic unit corresponding to the time domain resource within the unit time resource after the unit time resource is divided according to the basic unit of the time domain resource.
  • the sending unit is further configured to send second dynamic control information based on a second sending resource, where the content of the second dynamic control information is the same as the content of the first dynamic control information, and the second sending resource
  • the corresponding frequency domain resource is the same as the frequency domain resource occupied by the first dynamic control information, the position of the time domain resource corresponding to the second transmission resource within the unit time resource and the first dynamic control information occupy
  • the time domain resource has the same position within the unit time resource.
  • the position of the time domain resource within the unit time resource means that the time domain resource is divided according to the basic unit of the time domain resource. Information about the corresponding basic unit in the unit time resource.
  • the receiving unit is further configured to determine When the predetermined layer i data in the first layered modulation data cannot be decoded correctly, receiving third layered modulation data, the third layered modulation data including the first layered modulation data The predetermined i-layer data in.
  • the first layered modulation data includes a source First location information of the node, where the first location information represents a first geographic location where the source node generates the first hierarchical modulation data;
  • the processing unit is also used to obtain a second geographic location, where the second geographic location represents the geographic location of the data transmission device;
  • the sending unit is further configured to send the second hierarchical modulation data when the distance between the first geographic location and the second geographic location is less than a preset distance, where the second division
  • the layer modulation data includes the first position information.
  • the sending unit is further configured to determine When the predetermined i-layer data in the first hierarchical modulation data is correctly decoded and the number of times the second hierarchical modulation data is transmitted is less than or equal to the predetermined number of forwarding times, the second hierarchical modulation data is transmitted; or,
  • the present application provides a user equipment, including a processor, a transceiver, and a memory; the memory is used to store instructions, the processor is used to execute the instructions, and the transceiver is used to receive and/or send data Wherein, when the processor executes the instruction, the user equipment is caused to perform the method described in the first aspect or any possible implementation manner of the first aspect.
  • the present application provides a computer storage medium that stores a computer program, and when the computer program is executed by a processor, to enable a device installed with the processor to implement the method as described in the first aspect method.
  • FIG. 1 is a schematic diagram of an application scenario of a data transmission method provided by this application.
  • FIG. 3 is a schematic diagram of a receiving node receiving and forwarding data provided by this application.
  • FIG. 5 is a schematic diagram of another receiving node receiving and forwarding data provided by this application.
  • FIG. 6 is a schematic diagram of another data forwarding method provided by this application.
  • FIG. 7 is a schematic diagram of an application scenario of a data transmission method provided by this application.
  • FIG. 8 is a schematic structural diagram of a data transmission device provided by the present application.
  • FIG. 9 is a schematic structural diagram of a network device provided by this application.
  • broadcast multicast services multimedia broadcast services, MBMS
  • MBMS multimedia broadcast services
  • the transmission parameters of the broadcast channel are designed based on the reception quality of the farthest user in the broadcast area to ensure that the broadcast information sent by the sending node can be correctly received by users in the entire broadcast area.
  • Such broadcasts require higher transmission power.
  • Sending is suitable for the scenario where the distance between the sending node and multiple receiving nodes is close, and the QoS level of the broadcast content is relatively single, but it is not suitable for receiving content with multiple QoS levels and receiving nodes at different distances to different content There are scenarios with different QoS requirements.
  • Multi-user superposition transmission (multi-user superposition transmission (MUST)) is to assign different transmission power to different users according to a certain transmission power allocation criterion at the sending node to achieve non-orthogonal transmission of multi-user information.
  • the target user equipment receives After sending the multi-user information sent by the node, the serial interference cancellation (Successive Interference Cancellation, SIC) algorithm is used to eliminate the information belonging to other users and obtain the information of the target user.
  • SIC Successessive Interference Cancellation
  • MUST is suitable for the same node to send different information to different nodes, but not for single or multiple nodes to send the same information to multiple nodes.
  • car accident information is very important for the vehicles in the area, and it is required that the vehicles in the area are received, but the importance of different types of information is different, such as car accident location and traffic In the case of congestion, it is necessary to ensure that vehicles that are far away in the area can be correctly received by one reception, so that the route can be re-planned, and the less important information such as the type of accident and lane occupancy only requires some vehicles that are closer Received correctly.
  • the broadcast method can only The car accident information is broadcasted once, and it cannot ensure that the less important information is received by the edge vehicle.
  • the transmission method of MUST is to send the information of different users to different nodes, so the above methods are not suitable for data transmission in V2X scenarios. demand.
  • this application proposes a data transmission method, which can solve the data transmission problem in the new scenario.
  • the method provided in this application can be applied to 5G new radio (NR) technology network or other future communication systems using various wireless access technologies, and can also be applied to V2V (vehicle-to-vehicle) of Internet of Vehicles or In a communication system such as V2X and master-slave mode, as long as the system includes at least one sending node (source node) and multiple receiving nodes, and the multiple receiving nodes can serve as relay nodes, received at a certain receiving node After the data sent by the source node or the relay node, if the data meets a predetermined condition, the receiving node may forward the received data.
  • NR new radio
  • the network device and the terminal device 1 to the terminal device 4 form a communication system.
  • both the network device and the terminal device can be used as the source node, and the terminal device It can be used as a receiving node to receive data sent by a source node or a relay node.
  • the network device may be an entity on the network side for transmitting or receiving signals, such as a new generation base station (new generation Node B, gNodeB); it may be a device for communicating with a mobile device or a wireless local area network ( Access point (AP) in wireless LAN, WLAN, global system for mobile (GSM) or code division multiple access (CDMA) base station (base transceiver station, BTS), it can also be a base station (NodeB, NB) in wideband code division multiple access (WCDMA), or an evolutionary base station (evolutional node) in long term evolution (LTE) , ENB or eNodeB), or relay station or access point, or in-vehicle equipment, wearable devices and network equipment in the future 5G network or network equipment in the future evolved public land mobile network (PLMN) network, Or gNodeB in 5G NR system, etc.
  • AP wireless local area network
  • WLAN global system for mobile
  • GSM global system for mobile
  • CDMA code division multiple access
  • the terminal device may be an entity on the user side for receiving or transmitting signals, such as a new generation user equipment (new generation UE, gUE).
  • Terminal equipment may also be called an access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.
  • the terminal equipment may be a station (STA) in the WLAN, may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, personal digital processing (personal digital assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, and next-generation communication systems, such as fifth-generation communications (fifth- generation, 5G) terminal equipment in the network or terminal equipment in the PLMN network of the public land mobile network that will evolve in the future, terminal equipment in the new wireless communication system, etc.
  • STA station
  • WLAN wireless local loop
  • PDA personal digital processing
  • 5G fifth-generation communications
  • the terminal device may also be a wearable device, and the wearable device may also be referred to as a wearable smart device, which is a general term for applying wearable technology to intelligently design everyday wear and develop wearable devices. , Such as glasses, gloves, watches, etc.
  • FIG. 2 is a flowchart of an information transmission method provided by an embodiment of the present application.
  • the data transmission method provided by the embodiment of the present application includes:
  • the receiving node receives the first hierarchical modulation data sent by the sending node.
  • the first layered modulation data includes data superimposed by k layers modulated by a layered modulation technique, k is an integer greater than or equal to 2, and each layer of data in the first layered modulation data is independently processed Coding and independent power processing.
  • the source bits corresponding to the k-layer data are subjected to independent channel coding, rate matching, and modulation to obtain the modulation symbol s j corresponding to each layer of data, where j is a positive integer less than or equal to k, and then the k-layer modulation symbol
  • the modulation symbol s j of any layer in the layer is multiplied by the corresponding power coefficient p j and superimposed, and the multi-layer modulation symbol after superposition is obtained as
  • the data carried by the multilayer modulation symbol is the first layer modulation data.
  • the multi-layer modulation symbols can also perform bit mapping, so that the corresponding constellation points satisfy Gray mapping.
  • the modulation method includes but is not limited to binary phase shift keying (binary phase shifting keying, BPSK), quadrature phase shift keying (quadrature phase shifting keying, QPSK), 16 quadrature amplitude modulation (quadrature amplitude modulation), QAM ), 64QAM and 256QAM, etc.
  • the modulation method is generally expressed by the modulation order.
  • the modulation order 1 corresponds to BPSK
  • the modulation order 2 corresponds to QPSK
  • the modulation order 4 corresponds to 16QAM
  • the modulation order 6 corresponds to 64QAM
  • the modulation order 8 corresponds to 256QAM.
  • the sending node independently encodes each layer of data means that after acquiring the data to be sent, the sending node first performs serial-to-parallel conversion on the input serial binary data to obtain k-layer data, and then corresponds to each of the k-layer data.
  • a modulation and coding scheme MCS performs channel coding on each layer of the k-layer data to obtain k groups of bits to be modulated corresponding to the k-layer data. As shown in FIG. 3, in FIG.
  • the sending node converts binary data into k-layer data, and then performs channel coding on each layer of data to obtain the group of bits to be modulated corresponding to each layer of data, where b jm represents the jth The m-th bit in the group of modulated bits.
  • the sending node performs independent power processing on each layer of data in the first layer of modulated data means that each layer of data has its own corresponding power parameter, and the sending node compares the power parameters corresponding to each layer of data Perform power processing on the layer data, that is, configure corresponding transmission power for each layer of data in the first layer of modulated data, so that each layer of data in the first layer of modulated data can be transmitted at the configured power .
  • the edge node receives and decodes correctly, while the layer data with lower transmission power can only be correctly received by the node closer to the sending node. It should be noted that correct reception in the embodiments of the present application refers to that the receiving node receives data and can correctly decode the received data.
  • the sending node includes one or more of the source node or the relay node.
  • the relay node After the relay node sends the first hierarchical modulation data for the source node, it receives correctly A node that reaches predetermined i-layer data in the first layered modulation data and forwards the first layered modulation data, the relay node may be one node, or two or more nodes, The receiving node may be one receiving node, or may be two or more receiving nodes, and the embodiment of the present application does not specifically limit it.
  • the sending node broadcasts the first layered modulation data including k-layer data, due to data transmission distance, signal interference, and signal attenuation, the first layered modulation received by different receiving nodes
  • the results of data demodulation are different.
  • the receiving node receives the first layered modulated data sent by the sending node, not all k-layer data may be decoded correctly, for example, a receiving node that is closer All k-layer data is decoded, and the receiving node that is far away can only correctly decode part of the k-layer data.
  • the correct decoding means that after each layer of data undergoes independent channel decoding, the cyclic redundancy check (CRC) verification information corresponding to the layer of data is correct.
  • CRC cyclic redundancy check
  • the receiving node needs to perform independent channel decoding on each layer of data in the first layered modulated data to obtain the points The decoded data corresponding to each layer of data in the layer modulation data, and then use the CRC algorithm to determine whether each layer of data is correctly decoded.
  • the CRC confirms that a certain layer of data in the k-layer data is correctly decoded, the layer of data The reception is correct, and then it is determined whether the predetermined i-layer data in the first layer modulation data can be correctly decoded.
  • the receiving node performs modulation coding on the decoded data corresponding to the correctly received layered modulation data including at least the predetermined i-layer data to obtain The second layer modulation data, and send the second layer modulation data.
  • the second layered modulation data includes the predetermined i-layer data correctly decoded, and i is a positive integer less than or equal to k.
  • the second hierarchical modulation data may include only the predetermined i-layer data, or may include the predetermined i-layer data and any other layer or multiple layers of data that can be correctly decoded. That is, as long as there is data in the second layer modulation data greater than or equal to the i-layer that can be correctly decoded, and the data that can be correctly decoded includes the predetermined i-layer data, the receiving node can be Sending the second layer modulation data.
  • the sending node performs independent coding and independent power processing on the k-layer data
  • the power allocated to the layer data with the lower layer number is greater, the data with the lower layer number is easier (or more likely) ) Is correctly received by the receiving node
  • the set of layer numbers corresponding to the layer data that can be correctly decoded by the receiving node may be ⁇ 1,2,..., n ⁇ ; or, when the sending node performs independent coding and independent power processing on the k-layer data, if the power allocated to the layer data with a larger layer number is greater, the data with a higher layer number is easier (or The more likely it is to be correctly received by the receiving node, when the number of layers of data that the receiving node can correctly decode is n, the set of layer numbers corresponding to the layer data that can be correctly decoded by the receiving node may be ⁇ k-n+1, k-n+2,
  • the second hierarchical modulation data when i is equal to k, includes all k-layer data correctly decoded in the first hierarchical modulation data. In another embodiment, if i is less than k, and the predetermined i-layer data is the first i-layer data in the k-layer data, then the second hierarchical modulation data includes correctly decoded i-layer data, the layer number set corresponding to the i-layer data is ⁇ 1,2,...,i ⁇ .
  • the second hierarchical modulation data includes correctly decoded i-layer data, the layer number set corresponding to the i-layer data is ⁇ k-i+1, k-i+2, ..., k ⁇ .
  • i is less than k, and the predetermined i-layer data may be i-layer data with discontinuous layer numbers.
  • the second The layer modulation data includes correctly decoded 3 layer data, that is, k equals 6, and i equals 3, and the layer number corresponding to the 3 layer data included in the second layer modulation data may be ⁇ 1,2,4 ⁇ . It is ⁇ 1,3,5 ⁇ , and it can also be ⁇ 2,4,6 ⁇ , etc.
  • the embodiments of the present application are not specifically limited.
  • the sending node modulates the data to be sent by layered modulation technology to obtain the first layered modulated data containing multiple layers of data, and then broadcasts the data.
  • the receiving node in the broadcast area receives the first layered data
  • the receiving node forwards the second hierarchical modulation data including the predetermined i-layer data if it is determined that the predetermined i-layer data in the first hierarchical modulation data is correctly decoded, by dividing the data Layer modulation obtains layered modulation data and broadcasts the layered modulation data in a cooperative forwarding manner, which can improve the efficiency of layered data broadcast transmission.
  • any one or more nodes in the first node determine that the predetermined i-layer data in the received data is correctly decoded
  • the second layered modulated data will also be forwarded, so that the second layered modulated data can be forwarded through different nodes.
  • Layering modulated data to obtain layered modulated data and broadcasting the layered modulated data in a manner of multiple nodes multiple cooperative forwarding, so that user equipment at the edge of the broadcast area can receive the layered forwarding from other nodes Modulate data without the source node transmitting at a time even if the user equipment at the edge of the broadcast area correctly receives the layered modulation data, which can reduce the transmission power of the source node, reduce interference between broadcast channels, and improve the efficiency of multi-layer data transmission .
  • the sending node allocates each layer of data in the first layered modulated data with different transmission power and then sends, so that the node at the edge of the broadcast area can correctly receive the transmission in the first layered modulated data
  • the partial layer data with higher power can reduce the transmission power of the source node and effectively reduce the interference between broadcast channels compared to ensuring that the nodes at the edge of the broadcast area receive all the data in the first layered modulated data correctly.
  • step S104 before sending the second hierarchical modulation data, the receiving node needs to determine a first transmission resource for sending the second hierarchical modulation data, and then based on the first transmission The resource sends the second layer modulation data.
  • the first transmission resources used for the second layered modulation data are the same, ensuring that the second layered modulation data forwarded by multiple receiving nodes at the same time can be superimposed on the same resource, which can improve the success of other receiving nodes to receive the second layered modulation The probability of the data.
  • the transmission resource information that the node needs to determine when sending data includes one or more of time domain resource information, frequency domain resource information, air domain resource information, and modulation and coding information.
  • the frequency domain resource may be one or more resource blocks (resourceblock, RB), one or more resource elements (resourceelement, RE), one or more carriers, or one Or a plurality of bandwidth parts (bandwidthpart, BWP), corresponding to the first transmission resource, including starting physical resource block information, ending physical resource block information, and number of physical resource blocks for mapping the second hierarchical modulation data, Sub-band (sub-band, SB) information, carrier information, BWP information, etc.
  • the time domain resource may be one or more subframes, one or more time slots, or one or more symbols on one or more time slots, corresponding to the first transmission resource, including for mapping The starting symbol information, ending symbol information, symbol number, time slot information, subframe information, etc. of the second layer modulation data.
  • the airspace resource information may include start antenna port number information, cut-off antenna port number information, number of antenna port numbers, etc. for mapping second layered modulation data; the coded modulation information may include scheduling second layered modulation Modulation and coding scheme (MCS) information corresponding to the data, process number information, coding redundancy version information, power allocation information, etc.
  • MCS Modulation and coding scheme
  • the MCS information includes the modulation corresponding to each layer of data in the first layer of modulated data Encoding method, so that after the receiving node receives the first hierarchical modulation data sent by the sending node, the first hierarchical modulation data is decoded based on the MCS to obtain decoded data, and the correct reception is determined After the first hierarchical modulation data includes the predetermined i-layer data, modulate and encode the decoded data including the predetermined i-layer data according to the MCS to obtain the second hierarchical modulation data .
  • the receiving node determines the first sending resource for sending the second hierarchical modulation data by acquiring the first sending resource information, and the receiving node may obtain the first sending resource information in the following three ways:
  • the receiving node receives the first pre-configuration signaling sent by the network-side device, and obtains the first sending resource information from the first pre-configuration signaling.
  • the network-side device is a base station
  • the first pre-configuration signaling may be radio resource control (radio resource control, RRC) signaling
  • RRC radio resource control
  • the first transmission resource information includes two parts of resource information, where the first resource information is used to indicate resources that the receiving node can use to send hierarchical modulation data in the communication system shown in FIG.
  • time domain resources At least one of subframe information and time slot information in, at least one of carrier information and BWP information in frequency domain information; second resource information is used to instruct the receiving node in the communication system shown in FIG. 1
  • the resources that can be used when broadcasting hierarchically modulated data in the medium include at least one of symbol information in time domain resource information, physical resource block information in frequency domain resource information, space domain resource information, and coding modulation information.
  • the physical resource block information includes starting physical resource block information and ending physical resource block information for mapping layered modulation data;
  • the symbol information includes starting symbol information, ending symbol information, and symbol number for mapping layered modulation data At least two kinds of information in the number;
  • the coded modulation information includes MCS information corresponding to scheduling hierarchical modulation data, power allocation information, etc., that is, the first resource information in the first transmission resource information is used to indicate the receiving node A resource that can be used to send data.
  • the second resource information indicates which resources the receiving node specifically uses to send the second layered modulation data.
  • the second resource information instructs the receiving node to modulate the second layered modulation data.
  • the data is modulated in the 3rd to 7th symbols of the first slot of a subframe.
  • the first pre-configured signaling may be sent to all nodes in the communication system through a network-side device.
  • the receiving node After receiving the first layered modulation data, the receiving node determines the predetermined i-layer When the data can be correctly decoded, based on the resource information in the first pre-configured signaling, a first transmission resource such as a time domain resource and a frequency domain resource that can be used to send the second layered modulated data is determined And send the second layered modulation data based on the first sending resource.
  • the receiving node determines the first sending resource information by using a second pre-configuration signaling and a pre-defined combined indication method.
  • the second pre-configuration signaling includes the first resource information in the first transmission resource information in the above-mentioned first manner.
  • the second pre-configuration signaling may be RRC signaling.
  • the second resource information in the first transmission resource information is determined by a predefined method, the predefined method includes determining the second resource information of the first transmission resource information according to the first received resource information, the first The receiving resource information is used to instruct the receiving node to receive the first receiving resource of the first hierarchical modulation data.
  • the second resource information in the first transmission resource information is the same as the first received resource information
  • the first received resource information is the same as the second resource information in the first manner described above, and is not repeated here Repeat.
  • the first received resource information may be sent to the receiving node through third pre-configuration signaling, and the third pre-configuration signaling may be RRC signaling.
  • the first transmission resource for the second hierarchical modulation data sent by the receiving node is specifically determined by the second resource information in the first transmission resource information, and the second resource
  • the information is the same as the first received resource information, for example, the frequency domain resource corresponding to the first sending resource is the same as the frequency domain resource corresponding to the first receiving resource, and the time domain corresponding to the first sending resource
  • the position of the resource in the unit time resource is the same as the position of the time domain resource corresponding to the first received resource in the unit time resource.
  • the position of the time domain resource in the unit time resource refers to the information of the basic unit corresponding to the time domain resource in the unit time resource after the unit time resource is divided according to the basic unit of the time domain resource.
  • the unit time resource may be a subframe or time slot
  • the basic unit of the time domain resource is an orthogonal frequency division multiplexing (OFDM) symbol
  • a subframe or time slot contains multiple OFDM symbols
  • the position of the time-domain resource within the unit time resource is the OFDM symbol number information of the time-domain unit, including at least two of the starting OFDM symbol, the ending OFDM symbol, and the number of OFDM symbols ⁇ Kind of information.
  • the time domain resource of the first receiving resource at which the receiving node receives the first hierarchical modulation data is the third symbol to the seventh symbol of the first slot of a subframe, that is, the first hierarchical modulation data Carrying the 3rd symbol to the 7th symbol in the first time slot of a subframe sent by the sending node to the receiving node, after the receiving node determines that the preset i-layer data can be correctly decoded, it will
  • the second layered modulation data is also carried in the 3rd to 7th symbols of the first slot of another subframe.
  • the receiving node completes the process of receiving and forwarding once as shown in FIG. 4, in FIG. 4, the network side device sends the second pre-configuration signaling and the third pre-configuration signaling to the receiving node ,
  • the sending node sends the first layered modulation data on the first sending resource
  • the receiving node 1 and the receiving node 2 receive the first layered modulation data at the same time, but only the data received by the receiving node 1, If the predetermined i-layer data can be correctly decoded, the receiving node 1 forwards the second layered modulation data based on the first transmission resource, and the second layered modulation data includes the correctly decoded data
  • the predetermined i-layer data is the process of receiving and forwarding once as shown in FIG. 4, in FIG. 4, the network side device sends the second pre-configuration signaling and the third pre-configuration signaling to the receiving node ,
  • the sending node sends the first layered modulation data on the first sending resource
  • the receiving node determines the first sending resource information through an indication manner in which second pre-configuration signaling is combined with first dynamic control information (dynamic control information, DCI).
  • the second pre-configuration signaling includes the first resource information in the first transmission resource information in the above-mentioned first manner.
  • the second pre-configuration signaling may be RRC signaling.
  • the second resource information in the first transmission resource information is determined by the first DCI received by the receiving node, and the first DCI includes data layer number information k of the first layered modulation data and the receiving node
  • Receiving a resource indication of a first received resource of the first hierarchical modulation data the resource indication of the first received resource includes symbol information in time domain resource information, physical resource block information in frequency domain resource information, and space domain resources At least one of information and coded modulation information.
  • the physical resource block information includes at least two types of starting physical resource block information, ending physical resource block information, and number of physical resource blocks used for mapping layered modulation data; symbol information includes information for mapping layered modulation data.
  • the coding modulation information includes MCS information, power allocation information, etc. corresponding to the scheduling layered modulation data.
  • the resource indication of the first received resource indicates that the receiving node receives the first received resource of the first hierarchical modulation data.
  • the second resource information in the first sending resource information is the same as the resource indication of the first receiving resource in the first DCI.
  • the receiving node before the receiving node receives the first DCI, the receiving node also needs to receive second receiving resource information, and the second receiving resource information is used to instruct the receiving node to receive or monitor the first DCI Receiving resources
  • the second receiving resource information includes time slot information and symbol information in time domain resource information, physical resource block information in frequency domain resource information, air domain resource information and coding and modulation information; for example, physical resource block information includes Starting physical resource block information and ending physical resource block information for mapping the first DCI; symbol information includes at least two of starting symbol information, ending symbol information and number of symbols for mapping the first DCI ⁇ Kind of information.
  • the second received resource information may be sent to the receiving node by means of fourth pre-configuration signaling, and the fourth pre-configuration signaling may be RRC signaling.
  • the receiving node needs to send the second DCI before sending the second layered modulation data.
  • the content of the second DCI is the same as the first DCI. It can be understood that, before sending the second DCI, the receiving node needs to determine a second sending resource for sending the second DCI, and the second sending resource may be determined by second sending resource information.
  • the second sending resource information is determined by receiving a fifth pre-configuration instruction sent by the network-side device in combination with the first DCI, and the fifth pre-configuration instruction includes the first part of the second sending resource information, indicating The resources that the receiving node can use to send dynamic control information in the communication system shown in FIG.
  • the fifth pre-configuration signaling may be RRC signaling; the second part of the second transmission resource information is determined according to the second reception resource information, that is, the second transmission resource information The second part in is the same as the second received resource information.
  • the receiving node completes the process of receiving and forwarding once as shown in FIG. 5.
  • the network-side device sends a fourth pre-configuration signaling to the receiving node to indicate the receiving
  • the node receives the second receiving resource of the first DCI
  • the network side device sends a third pre-configured signaling to the receiving node, which is used to instruct the receiving node to receive the first hierarchical modulation data of the first
  • the network-side device sends a second pre-configured signaling to the receiving node to indicate that the receiving node can use resources for sending hierarchical modulation data
  • the network-side device sends the second Five pre-configured signaling, used to indicate the resources that the receiving node can use to send dynamic control information
  • the sending node sends the first DCI and the first layered modulation data
  • the receiving node 1 and the receiving node 2 receive The first DCI and the first layered modulation data, but only in the data received by the receiving node 1, the
  • step S104 when the receiving node determines that the predetermined i-layer data can be correctly decoded, it also needs to determine that the receiving node divides the second The number of times the layered modulation data is sent is less than or equal to the maximum number of forwarding times before the receiving node can forward the second layered modulated data; if the number of times the receiving node sends the second layered modulated data is greater than the At a predetermined number of forwarding times, the receiving node stops forwarding the second layered modulated data.
  • the maximum forwarding times may be determined by receiving configuration signaling sent by the network side, and the configuration signaling may be RRC.
  • the predetermined i-layer data includes first location information of a source node, and the first location information represents a first geographic location where the source node generates the first hierarchical modulation data position.
  • the receiving node obtains the second geographic location where the receiving node is currently located if it is determined that the predetermined i-layer data can be correctly decoded, if the second geographic location is different from the first geographic location If the distance between them is less than the preset distance, the receiving node forwards the second layered modulation data; or, if the distance between the second geographic location and the first geographic location is smaller than the preset distance, and If the number of times the receiving node sends the second layered modulated data is less than or equal to the maximum forwarding coefficient, the receiving node forwards the second layered modulated data.
  • the receiving node when the receiving node determines that the predetermined i-layer data can be correctly decoded, it also needs to determine whether a third-layer modulation data that can be used to send the second layered modulation data is configured
  • a transmission resource if it exists, the receiving node transmits the second hierarchical modulation data on the first transmission resource; or, there is a first transmission resource available for transmitting the second hierarchical modulation data , And the number of times the receiving node sends the second hierarchical modulation data is less than or equal to the maximum number of forwarding times, the receiving node sends the second hierarchical modulation data;
  • a transmission resource of second layered modulation data a distance between the second geographic position and the first geographic position is less than a preset distance, and the number of times the receiving node sends the second layered modulation data is less than Or equal to the maximum number of forwarding times, the receiving node forwards the second layered modulation data.
  • the preset forwarding condition may be one or more forwarding conditions in the foregoing possible embodiment manners.
  • the first receiving resource includes multiple block receiving resources, and each receiving resource in the multiple block receiving resources is used to receive the first layered modulation data once, if the receiving After receiving the first hierarchical modulation data on the first reception resource of the multiple reception resources, the node determines that the predetermined i-layer data in the first hierarchical modulation data has not been correctly decoded , Then the receiving node may receive the first hierarchical modulation data again on the receiving resources of other blocks in the multi-block receiving resources, and merge the data received multiple times until determining the predetermined i in the received data Layer data can be decoded correctly.
  • the receiving node may be repeatedly received on the second reception resource.
  • the receiving node does not repeatedly receive if the number of times that the receiving node repeatedly receives the first hierarchical modulation data and/or the first DCI has reached the maximum number of repetitions.
  • the data is modulated by the layered modulation technique to obtain layered modulated data containing multiple layers of data, and then transmitted, so that the receiving node, especially the receiving node at the edge of the broadcast area, merges the received layered modulated data multiple times, so that it can be Correctly decode the predetermined i-layer data, so that the source node can correctly receive the predetermined i-layer data at the edge of the broadcast area without a single transmission, which can reduce the transmission power of the source node, reduce interference between channels, and improve The efficiency of data transmission.
  • FIG. 1 is a possible application scenario of a data transmission method provided by an embodiment of the present application.
  • the cell in FIG. 1 includes a base station (source node) and four terminal devices. Before the base station sends the first layered modulation data to the terminal device, the base station first sends pre-configuration signaling through RRC signaling.
  • the pre-configuration information is used to configure i equal to 4, that is, within the cell, if the receiving node receives data including predetermined layer 4 data that can be correctly decoded, the receiving node can forward the received data.
  • the base station first sends the first DCI
  • the first DCI includes the data layer number k of the first hierarchical modulation data to be transmitted by the base station and resources of the first receiving resource for receiving the first hierarchical modulation data
  • the terminal device receives the first layered modulation data based on the time domain resource and the frequency domain resource indicated by the first reception resource information in the first DCI.
  • each terminal device After receiving the first DCI sent by the base station and the first hierarchical modulation data containing 6-layer data, each terminal device performs data on each layer of the received hierarchical data Independent decoding to determine whether the predetermined 4-layer data can be decoded correctly. Since the terminal device 1 is closest to the base station, and the terminal device 1 determines that the predetermined layer 4 data in the layered data can be correctly decoded, the terminal device 1 can forward the first layer including the predetermined layer 4 data.
  • the terminal device 1 first determines the first transmission resource that sends the second layer modulation and the second transmission resource that sends the second DCI, where the content of the second DCI and the first Same for a DCI, the frequency domain resource corresponding to the first transmission resource is the same as the frequency domain resource corresponding to the first receiving resource, and the position of the time domain resource corresponding to the first transmission resource within the unit time resource.
  • the time domain resource corresponding to the first receiving resource has the same position within the unit time resource
  • the second sending resource is the same as the second receiving resource that the terminal device receives the first DCI, and then,
  • the terminal device 1 transmits the second DCI based on the second transmission resource and transmits the second layered modulation data based on the first transmission resource.
  • the base station may continue to send the first DCI and the first layered modulation data.
  • “receive (pair)” means that the predetermined 4-layer data in the data received by the corresponding terminal device can be correctly decoded
  • “receive (error)” means the corresponding terminal device The predetermined 4-layer data in the received data cannot be decoded correctly.
  • terminal device 1 of terminal devices 1 to 4 correctly receives the predetermined 4 of the first layered modulation data Layer data
  • the terminal device 1 is converted into a relay node and starts to forward the second layered modulated data
  • the base station continues to send the first layered modulated data
  • terminal devices 2 to 4 receive the base station and terminal device 1 Of the data.
  • the terminal device 2 will receive the layered modulation data sent by the terminal device 1 and the layered modulation data sent by the base station again, if the terminal device 2 receives the second point sent by the terminal device 1 After layer-modulated data, it is determined that the predetermined 4-layer data is correctly received, or the terminal device 2 combines the three received data, and it is determined that the predetermined 4-layer data is correctly received, then the terminal device 2 converts to The relay node starts to forward the data it receives, and the terminal device 3 and the terminal device 4 receive the data sent by the base station, the terminal device 1, and the terminal device 2.
  • each node can only send the received data three times, then after any node sends DCI and the number of layers of the layered modulation data three times, it quits the DCI and the
  • the layered modulation data is sent, for example, after the base station sends the DCI and the layered modulation data three times, the DCI and the layered modulation data are no longer sent, and the DCI and the layered modulation data are sent at the terminal device 1 After three times of layered modulation data, regardless of whether any user equipment in terminal equipment 2 to terminal equipment 4 correctly receives each layer of data in the layered modulation data, the terminal equipment 1 no longer forwards the DCI and all The layered modulation data is described.
  • FIG. 7 is another possible application scenario of the data transmission method provided by the embodiment of the present application.
  • the data transmission method provided in this application can be applied to V2V (vehicle-to-vehicle) or V2X (vehicle-to-everything) of the Internet of Vehicles, as shown in FIG. 7, in which vehicle 1 to vehicle 5 are all driving on the road If the vehicle 1 in FIG. 7 is on the way, the vehicle-mounted device finds that a traffic accident in front leads to road congestion, then the vehicle-mounted device in the vehicle 1 serves as the source node to generate broadcast information including the geographical location and scene of the accident The degree of traffic congestion, lane occupancy, the severity of the accident, the progress of accident handling, and other information related to traffic accidents.
  • V2V vehicle-to-vehicle
  • V2X vehicle-to-everything
  • the vehicle-mounted terminal on the vehicle 1 When the vehicle-mounted terminal on the vehicle 1 performs the layered modulation of the above information to obtain the first layer of modulated data, it will The geographical location of the accident and the degree of on-site traffic congestion are the most important information, the first layer of data L1 modulated into the first layer of modulation data, the lane occupancy and the severity of the accident are used as the second layer of data L2, the accident is handled Progress and other information related to traffic accidents
  • the third layer of data L3 when power is allocated to the third layer of data, the first layer of information is allocated the maximum power of the three layers to make the accident more important Geographical location and on-site traffic congestion can be received and decoded correctly by more vehicles, while other secondary information is allocated with lower power and only requires closer vehicles to receive and decode correctly.
  • the broadcast information may be the following information: "A car accident occurred in the section of Keyuan Road Science and Technology Park from north to south, two of the four lanes were impassable, and the traffic was relatively congested. The traffic police are handling it. It is predicted that the traffic will be in 20 minutes “Can be restored to normal", when the above information is layered and modulated, the information "Car accident on the section of Keyuan Road Science and Technology Park from north to south” and “traffic is more congested" are used as L1, and the maximum power in the third floor is allocated.
  • the receiving node determines that each layer of the first layer of modulated data can be correctly decoded, the receiving node Only then can the first layered modulation data be forwarded. Then, after the vehicle 2 determines that each layer of the received first layer modulation data can be correctly decoded, the vehicle 2 sends second layer modulation data based on the first transmission resource, and the first transmission resource is The first transmission resource of the first hierarchical modulation data sent by the vehicle 1 is the same, wherein the second hierarchical modulation data sent by the vehicle 2 is completely the same as the first hierarchical modulation data generated by the vehicle 1 The same, the transmission power allocated by the vehicle 2 to each layer of the second layer modulation data is the same as the transmission power allocated by the vehicle 1 to each layer data, that is, the vehicle 2 forwards the first layer modulation data .
  • Vehicle 3, vehicle 4 and vehicle 5 continue to receive the first hierarchical modulation data. After vehicle 2 sends the second hierarchical modulation data, this time both vehicle 3 and vehicle 4 can correctly receive the first hierarchical modulation data L3 in the hierarchical modulation data, then vehicle 3 and vehicle 4 forward the first hierarchical modulation data as vehicle 2 described above, and vehicle 5 only receives the first hierarchical modulation data forwarded by vehicle 2 and only L2 can be correctly received. After vehicle 3 and vehicle 4 forward the first layered modulation data, vehicle 5 continues to receive the first layered modulation data. Vehicle 5 receives the first layered modulation data forwarded by vehicle 3 and vehicle 4 After one layer of modulated data, the information received three times is combined to obtain all three layers of data that can be decoded correctly. In the above example, the vehicle is only used to forward the first layered modulation data once. It can be understood that the vehicle can also forward the first layered modulation data multiple times. Specific restrictions.
  • the first hierarchical modulation data includes first position information of a first position where the vehicle 1 generates the first hierarchical modulation data, and the correct position is received by other vehicles After each layer of data in the first hierarchical modulation data, obtain second position information of the second position where it is located, and determine the first position and the second position information according to the first position information and the second position information The distance between the second positions, if the distance is less than a preset distance, the vehicle forwards the first layered modulation data, if the distance is greater than or equal to the preset distance, the receiving node The layered modulation data is not forwarded.
  • the vehicle 5 determines that the first hierarchical modulation data is correctly received, if the distance between the vehicle 5 and the vehicle 1 when the first hierarchical modulation data is generated is less than the preset distance, the vehicle 5 forwards For the first layered modulation data, if the distance between the vehicle 5 and the vehicle 1 when the first layered modulation data is generated is greater than or equal to the preset distance, the vehicle 5 does not forward the first point Layer modulation data. Therefore, it is ensured that the first hierarchical modulation data is only received by a node requiring the first hierarchical modulation data within a certain range, and the infinite propagation of the first hierarchical modulation data is prevented.
  • FIG. 8 is a schematic structural diagram of a data transmission device according to an embodiment of the present application.
  • the device includes 500 at least including: a receiving unit 510, a sending unit 520, and a processing unit 530. among them,
  • the processing unit 530 may be used to control and manage the actions of the data transmission device 500.
  • the processing unit 530 is used to perform step S104 in FIG. 2 and/or to perform other content of the technology described in the method embodiment of the present application.
  • the receiving unit 510 is used to receive data sent by other devices.
  • the receiving unit 510 is used to perform step S102 in FIG. 2 and/or to perform other contents of the technology described in this application;
  • the device sends data, for example, the sending unit 520 is used to perform step S104 in FIG. 2 and/or to perform other contents of the technology described in this application.
  • the data transmission device 500 may further include a storage unit 540.
  • the storage unit 540 is used to store program codes and data of the data transmission device 500, for example, program codes used to decode the received layered modulation data.
  • the processing unit 530 is used to call the program code in the storage unit 540 to implement an implementation step that uses a data transmission device as an execution subject, and/or other content steps for performing the technology described in this application.
  • the processing unit 530 may be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), or an application-specific integrated circuit (application-specific) integrated circuit (ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of the present application.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of DSP and microprocessor, and so on.
  • the receiving unit 510 and the sending unit 520 may be a communication interface, a transceiver, a transceiver circuit, etc., where the communication interface is a general term and may include one or more interfaces, and the storage unit 540 may be a memory, or other services for providing a storage function Or module.
  • FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • the network device 600 at least includes a processor 610, a transceiver 620, and a memory 630.
  • the processor 610, the transceiver 620, and the memory 630 are connected to each other through a bus 640, wherein,
  • the processor 610 may be composed of one or more general-purpose processors, such as a central processing unit (CPU), or a combination of a CPU and a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the above PLD may be a complex programmable logic device (complex programmable logic device, CPLD), a field programmable logic gate array (field-programmable gate array, FPGA), a general array logic (generic array logic, GAL), or any combination thereof.
  • the memory 630 may include volatile memory (volatile memory), such as random access memory (random access memory, RAM); the memory may also include non-volatile memory (non-volatile memory), such as read-only memory (read-only) memory (ROM), flash memory (flash memory), hard disk (hard disk drive), or solid-state drive (SSD); the memory 630 may also include a combination of the aforementioned types of memory.
  • volatile memory volatile memory
  • non-volatile memory such as read-only memory (read-only) memory (ROM), flash memory (flash memory), hard disk (hard disk drive), or solid-state drive (SSD); the memory 630 may also include a combination of the aforementioned types of memory.
  • the memory 630 may be used to store program codes and data, so that the processor 610 calls the program codes stored in the memory 630 to implement the functions of the communication module and/or the processing module involved in the embodiments of the present invention.
  • the processor 610 is used to read related instructions in the memory 630 to perform the following operations:
  • the transceiver Controlling the transceiver to receive the first layered modulation data sent by the sending node, wherein the first layered modulation data includes k-layer data, and each layer of data in the first layered modulation data is independently coded and independent Power handling, k is an integer greater than or equal to 2;
  • the transceiver is controlled to transmit second layered modulation data, and the second layered modulation data includes all the correctly decoded data
  • the predetermined i-layer data where i is a positive integer less than or equal to k.
  • the apparatus shown in FIGS. 8 and 9 may be a terminal device, and the receiving unit 510 in FIG. 8 and the transceiver in FIG. 9 may be circuits or devices with radio frequency processing functions, which may be used for receiving The radio frequency signal and/or radio frequency related processing is performed on the received radio frequency signal.
  • the first hierarchical modulation data in the form of a radio frequency signal is received.
  • step S104 in 2 the second hierarchical modulation data in the form of a radio frequency signal is sent.
  • the apparatus shown in FIGS. 8 and 9 may be a chip or a chip system, which may be installed in a terminal device.
  • the receiving unit 510 in FIG. 8 and the transceiver in FIG. 9 may be an input signal interface of a chip or a chip system, used to receive signals input from other devices or circuits that require baseband processing, for example,
  • step S102 in FIG. 2 a signal obtained by performing radio frequency correlation processing on the first layered modulation data in the form of a radio frequency signal is received.
  • step S104 the second layer modulation data in the form of a baseband signal is output.
  • An embodiment of the present invention also provides a computer non-transitory storage medium.
  • the computer non-transitory storage medium stores instructions. When it runs on a processor, it can implement the method steps in the foregoing method embodiments.
  • the processor of the computer non-transitory storage medium in the execution of the above method steps, reference may be made to the specific operations of the above method embodiments, which will not be repeated here.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server or data center Transmission to another website, computer, server or data center via wired (eg coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including a server, a data center, and the like integrated with one or more available media.
  • the usable medium may be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as an SSD) or the like.
  • the steps in the method of the embodiment of the present application can be adjusted, combined or deleted sequentially according to actual needs; the modules in the device of the embodiment of the present application can be divided, combined or deleted according to actual needs.

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Abstract

La présente invention concerne un procédé de transmission de données comprenant les étapes suivantes : un nœud de réception reçoit des premières données de modulation par répartition en couches envoyées par un nœud d'envoi, les premières données de modulation par répartition en couches comprenant k couches de données, chaque couche de données des premières données de modulation par répartition en couches étant soumise à un codage indépendant et un traitement de puissance indépendant, k étant un nombre entier supérieur ou égal à 2 ; et lorsqu'il déterminé que i couches de données prédéterminées des premières données de modulation par répartition en couches sont correctement décodées, envoyer des secondes données de modulation par répartition en couches, les secondes données de modulation par répartition en couches comprenant les i couches de données prédéterminées correctement décodées, i étant un nombre entier positif inférieur ou égal à k. La mise en œuvre de la solution permet d'envoyer des données multicouches d'une manière diffusée au moyen d'une modulation par répartition en couches et d'une transmission collaborative, ce qui améliore l'efficacité d'envoi d'informations multicouches d'une manière diffusée.
PCT/CN2019/129640 2018-12-29 2019-12-28 Procédé et dispositif de transmission de données, équipement utilisateur, et support de stockage informatique WO2020135815A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811654880.9 2018-12-29
CN201811654880.9A CN111385748B (zh) 2018-12-29 2018-12-29 数据传输方法和装置、用户设备及计算机存储介质

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WO2020135815A1 true WO2020135815A1 (fr) 2020-07-02

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CN101714962A (zh) * 2008-10-07 2010-05-26 富士通株式会社 分层调制方法、分层解调方法、发射机及接收机
CN101409696A (zh) * 2008-11-14 2009-04-15 电子科技大学 基于分层高阶调制的分层组合均衡技术
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