WO2014190817A1 - Procédé, dispositif et système de transmission de données - Google Patents

Procédé, dispositif et système de transmission de données Download PDF

Info

Publication number
WO2014190817A1
WO2014190817A1 PCT/CN2014/075291 CN2014075291W WO2014190817A1 WO 2014190817 A1 WO2014190817 A1 WO 2014190817A1 CN 2014075291 W CN2014075291 W CN 2014075291W WO 2014190817 A1 WO2014190817 A1 WO 2014190817A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
data
terminals
designated
network coded
Prior art date
Application number
PCT/CN2014/075291
Other languages
English (en)
Chinese (zh)
Inventor
许进
张帅
徐俊
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2014190817A1 publication Critical patent/WO2014190817A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present invention relates to the field of communications, and in particular, to a data transmission method, apparatus, and system. Background technique
  • MIMO Multiple Input Multiple Output
  • MIMO transmission schemes are divided into two categories, namely transmit diversity and spatial multiplexing, and diversity implementation data. Reliability transmission, multiplexing improves data transmission efficiency, and ultimately improves system capacity and spectrum efficiency.
  • V-MIMO virtual MIMO
  • MU-MIMO multi-user MIMO
  • Downlink virtual MIMO can share the receiving antennas of multiple terminals to form a virtual single-user MIMO (Single-User MIMO, SU-MIMO) receiver. Due to the low inter-layer interference of SU-MIMO, it can be compared with MU-MIMO. Better link performance and greater downstream throughput are of great benefit to improving communication in densely populated areas.
  • the downlink virtual MIMO user wants to finally obtain the data that he needs, and the users need to share the information received from the base station, and use all the information to jointly demodulate and decode the data. The data that each user needs.
  • a network consists of n nodes, and the kth node is denoted as N k .
  • Each node has its own unique data and sends this unique data to all other nodes.
  • the data propagation of each node is separated from time or frequency resources, that is, each node does not interfere with other nodes when sending data.
  • the existing inter-user data sharing system in the group is completed point-to-point through the direct transmission link, and the link with poor channel conditions needs multiple retransmissions, resulting in inefficient system and reduced throughput; or through the intermediate node for data forwarding assistance. Because the number of transmissions needs to be increased due to forwarding, the system is inefficient and the throughput is reduced. Summary of the invention
  • embodiments of the present invention provide a data transmission method, apparatus, and system.
  • the embodiment of the invention provides a data transmission method, and the method includes:
  • the terminal selects one or more terminals as the designated terminal
  • the terminal encodes the source data of the source data with the source data sent by the designated terminal, and sends the network coded data to the outside.
  • the terminal selects one or more terminals as the designated terminal as: The terminal selects the terminal with the best channel condition of its own; or
  • the method further includes:
  • the method further includes:
  • the method further includes:
  • the terminal While transmitting the network coded data, the terminal also sends the following additional information: the identity information of the designated terminal, the information indicating whether the data part of the data packet is network coded data, and the identity information refers to information that can uniquely identify the user.
  • the additional information is indicated by using a frame header of the sent data packet; or the additional information is indicated by using signaling; or
  • the additional information is indicated using a code sequence.
  • the terminal receives network encoded data sent by other terminals and decodes the data.
  • the method further includes:
  • the terminal further receives source data and additional information transmitted by other terminals.
  • the terminal uses the network coded data to perform joint decoding with the received source data of other terminals.
  • Each terminal in the group selects one or more terminals as designated terminals, and each terminal separately encodes its own source data and source data sent by the designated terminal, and sends network coded data to the outside; Each terminal receives network coded data sent by other terminals and decodes them.
  • the embodiment of the invention provides a terminal, where the terminal includes:
  • the terminal selection unit is configured to select one or more terminals as the designated terminal;
  • the network coded data sending unit is configured to perform network coding on the source data of the terminal itself and the source data sent by the designated terminal, and send the network coded data to the outside. .
  • the designated terminal selection unit is specifically configured to select a terminal with the best channel condition to the terminal itself;
  • the embodiment of the invention provides a terminal, where the terminal includes:
  • a receiving unit configured to receive network coded data sent by other terminals
  • the decoding unit is configured to decode the network encoded data received by the network coded data receiving unit.
  • the receiving unit is further configured to receive source data and additional information sent by other terminals;
  • the decoding unit is specifically configured to perform joint decoding using the network encoded data and the received source data of other terminals when determining that the received data packet data portion is network coded data according to the additional information.
  • An embodiment of the present invention provides a data transmission system, where the system includes the terminal of claim 10 and the terminal of claim 12.
  • the technical solution of the embodiment of the present invention includes: the terminal selects one or more terminals as the designated terminal; the terminal performs network coding on the source data of the source data and the specified terminal, and sends the network coded data to the outside. Therefore, in the embodiment of the present invention, when the terminal does not rely on the intermediate node for auxiliary transmission, each terminal performs network coding by using information of the designated terminal, and then performs network coding. Data is broadcast to other terminals. Therefore, the number of data retransmissions can be reduced, thereby improving the data throughput of the system and improving the transmission efficiency of the system.
  • FIG. 1 is a schematic flowchart of an implementation process of a data transmission method according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of data transmission of a data transmission system according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a frame header and a data structure of Embodiments 1, 3, and 5;
  • FIG. 6 is a schematic diagram of signaling structures of Embodiments 2, 4, and 6;
  • FIG. 7 is a schematic diagram of a frame header and a data structure of Embodiments 7, 9, and 11;
  • FIG. 8 is a schematic diagram of data transmission after reselecting a designated terminal in Embodiments 7 to 12.
  • FIG. 9 is a schematic diagram of signaling structures of Embodiments 8, 10, and 12.
  • a data transmission method is provided in the embodiment of the present invention. As shown in FIG. 1 , the method includes: Step 101: A terminal selects one or more terminals as a designated terminal;
  • Step 102 The terminal performs network coding on the source data sent by the terminal and the source data sent by the designated terminal, and sends the network coded data to the outside.
  • the terminal when the source data sent by the designated terminal is not received, the terminal sends its own source data; the terminal sends the following additional information while transmitting the source data: Specifying the identity information of the terminal, indicating whether the data part of the data packet indicates Information for encoding data for the network, the identity information refers to information that uniquely identifies the user;
  • the network coding refers to an intermediate node in the network performing linear or non-linear processing on data received on each channel, and the network coding is divided into a binary domain XOR network coding and a multi-domain. Network coding, distributed network coding, etc. Received from each channel The data may be referred to as source data, and the data obtained after network coding processing may be referred to as network coded data.
  • the binary domain XOR network coding is to perform the XOR processing of the two source data in the binary domain to obtain the network coded data, and then send the network coded data to the receiving node, and the receiving node only needs to know one source data and network coded data. It is possible to use the two data for joint decoding (two information for binary domain exclusive OR operation) to obtain another source data, which is simple and easy to implement.
  • the terminal selecting one or more terminals as the designated terminal may be:
  • the terminal selects the terminal with the best channel condition of its own; or
  • the indicator of the channel condition may include a Channel Quality Indicator (CQI), a Signal to Interference plus Noise Ratio (SINR), and a channel transfer matrix.
  • CQI Channel Quality Indicator
  • SINR Signal to Interference plus Noise Ratio
  • the method may further include:
  • the specified terminal Before the condition of changing the specified terminal is reached, the specified terminal is kept fixed, that is, the designated terminal is not reselected.
  • the method may further include:
  • the method may further include:
  • the terminal While transmitting the network coded data, the terminal also sends the following additional information: the identity information of the designated terminal, the information indicating whether the data part of the data packet is network coded data, and the identity information refers to information that can uniquely identify the user.
  • the additional information is indicated by using a frame header of the sent data packet; or the additional information is indicated by using signaling; or
  • the additional information is indicated using a code sequence;
  • the code sequence may be a 4 U code sequence or an orthogonal code sequence.
  • the terminal receives network encoded data sent by other terminals and decodes the data.
  • the terminal directly decodes the received data to obtain source data of the transmitting terminal; when the received data is network encoded data, the terminal uses the network encoded data and the received other The source data of the terminal is jointly decoded.
  • the method further includes:
  • the terminal further receives source data and additional information transmitted by other terminals.
  • the terminal uses the network coded data to perform joint decoding with the received source data of other terminals.
  • Each terminal in the group selects one or more terminals as designated terminals, and each terminal separately encodes its own source data and source data sent by the designated terminal, and sends network coded data to the outside;
  • Each terminal respectively receives network coded data sent by other terminals and decodes the data
  • any two or more terminals in the group cannot be designated terminals, because the intersection of the network coded data transmitted by the terminals of the specified terminal is an empty set.
  • each terminal sends its own source data before acquiring the source data of the designated terminal. After each terminal correctly receives the source data of the designated terminal, each terminal sends its own source data and the source data of the designated terminal for network coding.
  • Network encoded data The network is encoded as an exclusive OR network code of a binary domain.
  • the terminal includes: a designated terminal selecting unit 201 configured to select one or more terminals as a designated terminal; and a network coded data sending unit 202 configured to connect the terminal
  • the source data of the own source and the source data sent by the designated terminal are network coded, and the network coded data is sent out.
  • the designated terminal selection unit 201 is specifically configured to select a terminal with the best channel condition to the terminal itself; or
  • the specified terminal selection unit 201 and the network coded data transmission unit 202 may be configured by a central processing unit (CPU), a digital signal processor (DSP), or a programmable array (Field - in an electronic device). Programmable Gate Array, FPGA) implementation.
  • CPU central processing unit
  • DSP digital signal processor
  • FPGA Programmable Gate Array
  • the terminal includes: a receiving unit 301, configured to receive network coded data sent by other terminals;
  • the decoding unit 302 is configured to decode the network encoded data received by the network encoded data receiving unit.
  • the receiving unit 301 is further configured to receive source data and additional information sent by other terminals;
  • the decoding unit 302 is specifically configured to perform joint decoding using the network encoded data and the received source data of other terminals when determining that the received data packet data portion is network coded data according to the additional information.
  • the receiving unit 301 and the decoding unit 302 may be implemented by a CPU, a DSP or an FPGA in an electronic device.
  • a data transmission system provided by an embodiment of the present invention, where the system includes a first terminal and a second terminal;
  • the first terminal is configured to select one or more terminals as the designated terminal; the source data of the terminal itself and the source data sent by the designated terminal are network coded, and the network coded data is sent out;
  • the second terminal is configured to receive network coded data sent by other terminals; and decode the received network coded data.
  • first terminal may include one terminal shown in FIG. 2, and the second terminal may include another terminal shown in FIG.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the first embodiment of the present invention provides a process for sharing data transmission by using a network coding technology according to an embodiment of the present invention in a virtual MIMO structure composed of four terminals.
  • data sent by each terminal is used.
  • a frame header is included, and the frame header includes the following additional information: identity information of the specified terminal and information indicating whether the data packet portion is network coded data, and the identity information refers to information that can uniquely identify the user.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select other terminals to the terminal with the best channel condition as their designated terminals according to the channel conditions of the respective terminals to themselves. Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions. As shown in Figure 4:
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select other terminals to the terminal with the best channel condition as their designated terminals according to the channel conditions of the respective terminals to themselves.
  • the channel transfer matrix of this embodiment is as follows.
  • the nth row element represents the channel transfer value of other terminal to terminal n respectively.
  • the terminal 1 determines that the terminal 2 is its own designated terminal. Similarly, the terminal 2 determines that the terminal 3 is its own designated terminal, the terminal 3 determines that the terminal 4 is its own designated terminal, and the terminal 4 determines the terminal 1 Designate the terminal for itself. Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions. The terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively broadcast the shared data ", c, d, and other terminals to receive on their own resources.
  • the data sent by each terminal further includes such a frame header: the frame header includes two parts, The first part is the identification information of the designated terminal of the transmitting terminal; the second part indicates whether the transmitted data is network coded data, and when the terminal transmits the data for the first time, the second part of the frame header indicates that the network code is not transmitted at this time.
  • the data is shown in Figure 5.
  • Each terminal receives data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal through the packet frame header, and determines whether the data part of the data packet is network coded data.
  • the data packet frame header received by each terminal for the first time indicates that the data packet data portion is not network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 determine whether the data of the designated terminal is correctly received; if the data of the designated terminal is correctly received, the source data of the terminal is different from the data of the received terminal. Or network coding processing, and then broadcasting the network coded data to other terminals, the transmitted data also includes the above frame header, and the second part of the frame header indicates that the network coded data is sent; if the data of the designated terminal is not correctly received, Then continue to broadcast its own source data, the transmitted data also includes the above frame header, and the second part of the frame header indicates that the network coded data is not transmitted.
  • the terminal 1 correctly receives the source data 6 of the designated terminal 2, and the terminal 1 performs network coding of the data of the terminal 2 and the data of the terminal 2 to generate transmission data "® 6 , and the terminal 1 broadcasts the network coded data to other terminals.
  • the following frame header is added before the data: the first part of the frame header is the identification information of the terminal 2, and the second part indicates that the network coded data is transmitted.
  • the terminal 2 does not correctly receive the data of the designated terminal 3, and the terminal 2 continues. Broadcast its own source data 6 , when adding the following frame header before the data:
  • the first part of the frame header is the identification information of the terminal 3, and the second part indicates that the network coded data is not transmitted, as shown in Figure 5.
  • Other terminals The processing situation is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal through the packet frame header, and determines whether the data part of the data packet is network coded. Data. If the data packet frame header indicates that the data packet data portion is not network coded data, the terminal directly decodes the received data to obtain data of the transmitting terminal. If the data packet frame header indicates that the data packet data portion is network coded data, the terminal uses the network coded data to perform joint decoding with the data received by other terminals.
  • the terminal 1 has correctly received the data 6 of the designated terminal 2, and has not correctly received the data c sent by the terminal 3, but correctly received the network encoded data c ® d of the terminal 3 and the source data of the terminal 4, so the terminal 1 passes the formula ⁇ ⁇ ⁇ / ⁇ ⁇
  • the source data c of the terminal 3 is obtained; the terminal 1 obtains the source data 6 , c , d of the other terminals by this method.
  • the processing of other terminals is similar.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the second embodiment of the present invention provides a process of sharing data transmission between the terminals in the virtual MIMO structure composed of four terminals, and the terminal is in the control channel by using the network coding technology according to the embodiment of the present invention.
  • each terminal is in the control channel.
  • Sending signaling to other terminals, the signaling includes the following additional information: identity information of the designated terminal and information indicating whether the data portion of the data packet is network coded data, and the identity information refers to information that can uniquely identify the user.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select other terminals to the terminal with the best channel condition as their designated terminals according to the channel conditions of the respective terminals to themselves. Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions. As shown in Figure 4:
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select other terminals to the terminal with the best channel condition as their designated terminals according to the channel conditions of the respective terminals to themselves.
  • the channel transfer matrix of this embodiment is as follows.
  • the nth row element represents the channel transfer value of other terminal to terminal n respectively.
  • the terminal 1 determines that the terminal 2 is its own designated terminal. Similarly, the terminal 2 determines that the terminal 3 is its own designated terminal, and the terminal 3 determines that the terminal 4 is its own designated terminal. The terminal 4 determines that the terminal 1 is its own designated terminal. Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively broadcast the shared data ", c, d, and other terminals to receive on their own resources.
  • Each terminal also sends the following signaling to the other terminal on the control channel: signaling includes Two parts, the first part is the identification information of the designated terminal of the transmitting terminal; the second part indicates whether the transmitted data is network coded data, and when the terminal sends the signaling for the first time, the second part of the signaling indicates that the data is sent at this time. Not the network coded data, as shown in Figure 6.
  • Each terminal receives data broadcast by other terminals.
  • the signaling received by the terminal from the control channel acquires the identity information of the designated terminal corresponding to the transmitting terminal, and determines whether the data portion of the data packet is network coded data.
  • the signaling received by the terminal for the first time indicates that the data packet data portion is not network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 judge whether or not the data of the designated terminal is correctly received. If the data of the designated terminal is correctly received, the source data of the specified terminal and the received data of the designated terminal are subjected to binary domain XOR network coding processing, and then the network coded data is broadcast to other terminals; the terminal also needs to be in the control channel
  • the other terminal sends the following signaling: The first part of the signaling is the identity identification information of the designated terminal of the transmitting terminal; the second part indicates that the transmitted data is network coded data.
  • the terminal If the data of the designated terminal is not correctly received, the source data of the specified terminal is continuously broadcasted; the terminal also sends the following signaling to the other terminal on the control channel:
  • the first part of the signaling is the identity identification information of the designated terminal of the transmitting terminal; Indicates that the data sent is not network encoded data.
  • the terminal 1 correctly receives the source data of the designated terminal 2, and the terminal 1 performs network coding of the data of the terminal 2 and the data of the terminal 2 to generate transmission data, and the terminal 1 broadcasts the network coded data to other terminals;
  • the following signaling is to be sent to other terminals on the control channel: the first part of the signaling is the identification information of the designated terminal 2 of the transmitting terminal; the second part indicates that the transmitted data is the network encoded data.
  • the terminal 2 does not correctly receive the data of the designated terminal 3, and the terminal 2 continues to broadcast its own source data 6 ; the terminal 2 also sends the following message to the other terminal on the control channel.
  • the first part of the signaling is the identification information of the designated terminal 3 of the transmitting terminal; the second part indicates that the transmitted data is not the network encoded data, as shown in FIG. 6.
  • the processing of other terminals is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the signaling received by the terminal from the control channel acquires the identity information of the designated terminal corresponding to the transmitting terminal, and determines whether the data packet data portion is network coded data. If the signaling indicates that the data packet portion is not network encoded data, the terminal directly decodes the received data to obtain data of the transmitting terminal. If the signaling indicates that the data packet portion is network coded data, the terminal performs joint decoding using the network coded data and the data received by the other terminal.
  • the terminal 1 has correctly received the data 6 of the designated terminal 2, and has not correctly received the data c sent by the terminal 3, but correctly received the network coded data of the terminal 3/source data with the terminal 4, so the terminal 1 passes the formula ⁇ ⁇ ⁇ / ⁇ The source data c of the terminal 3; the terminal 1 obtains the source data 6 , c, d of the other terminal by this method.
  • the processing of other terminals is similar.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the third embodiment of the present invention provides a process for sharing data transmission by using the network coding technology according to the embodiment of the present invention in a virtual MIMO structure composed of four terminals.
  • the data sent by each terminal is performed.
  • a frame header is included, and the frame header includes the following additional information: identity information of the specified terminal and information indicating whether the data packet portion is network coded data, and the identity information refers to information that can uniquely identify the user.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select their own terminal with the worst channel condition of the other terminal as their designated terminal according to the channel condition of the terminal to each terminal. Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions. As shown in Figure 4:
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select their own terminal with the worst channel channel condition as their designated terminal according to the channel condition of each terminal to each terminal.
  • the SINR values of the channels in this embodiment are as follows.
  • the elements in the nth column represent the SINR of the terminal n to other terminal links, and the unit is dB. * indicates that the value is null.
  • channel conditions can also be determined based on CQI.
  • the terminal 1 determines that the terminal 2 is its own designated terminal according to the above method. Similarly, the terminal 2 determines that the terminal 3 is its own designated terminal, the terminal 3 determines that the terminal 4 is its own designated terminal, and the terminal 4 determines that the terminal 1 is its own designated terminal. . Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively broadcast the shared data ", c, d, and other terminals to receive on their own resources.
  • the data sent by each terminal further includes such a frame header: the frame header includes two parts, The first part is the identification information of the designated terminal of the transmitting terminal; the second part indicates whether the transmitted data is network coded data, and when the terminal transmits the data for the first time, the second part of the frame header indicates that the network code is not transmitted at this time.
  • the data is shown in Figure 5.
  • Each terminal receives data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal through the packet frame header, and determines whether the data part of the data packet is network coded data.
  • the data packet frame header received by each terminal for the first time indicates that the data packet data portion is not network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 determine whether the data of the designated terminal is correctly received; if the data of the designated terminal is correctly received, the source data of the terminal is different from the data of the received terminal. Or network coding processing, and then broadcasting the network coded data to other terminals, the transmitted data also includes the above frame header, and the second part of the frame header indicates that the network coded data is sent; if the data of the designated terminal is not correctly received, Then continue to broadcast its own source data, the transmitted data also includes the above frame header, and the second part of the frame header indicates that the network coded data is not transmitted.
  • the terminal 1 correctly receives the source data 6 of the designated terminal 2, and the terminal 1 performs network coding of the data of the terminal 2 and the data of the terminal 2 to generate transmission data "® 6 , and the terminal 1 broadcasts the network coded data to other terminals.
  • the terminal 1 when sending, add the following frame header before the data: frame
  • the first part of the header is the identification information of the terminal 2, and the second part indicates that the network coded data is transmitted.
  • the terminal 2 does not correctly receive the data of the designated terminal 3, and the terminal 2 continues to broadcast its own source data 6.
  • the following frame header is added before the data: the first part of the frame header is the identity identification information of the terminal 3, and the second part indicates the transmission. It is not network coded data, as shown in Figure 5.
  • the processing of other terminals is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal through the packet frame header, and determines whether the data part of the data packet is network coded data. If the data packet frame header indicates that the data packet data portion is not network coded data, the terminal directly decodes the received data to obtain data of the transmitting terminal. If the data packet frame header indicates that the data packet data portion is network coded data, the terminal uses the network coded data to perform joint decoding with the data received by other terminals.
  • the terminal 1 has correctly received the data 6 of the designated terminal 2, and has not correctly received the data c sent by the terminal 3, but correctly received the network encoded data c ® d of the terminal 3 and the source data of the terminal 4, so the terminal 1 passes the formula ⁇ ⁇ ⁇ / ⁇ ⁇
  • the source data c of the terminal 3 is obtained; the terminal 1 obtains the source data 6 , c , d of the other terminals by this method.
  • the processing of other terminals is similar.
  • Embodiment 4 The process of sharing data transmission is completed by using the network coding technology according to the embodiment of the present invention.
  • each terminal sends signaling to other terminals on a control channel, where the signaling includes the following additional information: Specifying identity information of the terminal and information indicating whether the data packet portion is network coded data, and the identity information refers to information that can uniquely identify the user.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select their own terminal with the worst channel condition of the other terminal as their designated terminal according to the channel condition of the terminal to each terminal. Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions. As shown in Figure 4:
  • Terminal 1, terminal 2, terminal 3, and terminal 4 respectively according to their own channel conditions to each terminal. Select the terminal with the worst channel condition from other terminals as its own designated terminal.
  • the SINR values of the channels in this embodiment are as follows.
  • the elements in the nth column represent the SINR of the terminal n to other terminal links, and the unit is dB. * indicates that the value is null. The smaller the SINR value, the more the channel condition is. difference:
  • Terminal 1 determines that terminal 2 is its own designated terminal according to the above method; similarly, terminal 2 determines that terminal 3 is its own designated terminal, terminal 3 determines that terminal 4 is its own designated terminal, and terminal 4 determines terminal 1 Designate the terminal for itself. Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively broadcast the shared data ", b, c, d" on their own resources, and the other terminals receive the same.
  • Each terminal also sends the following signaling to the other terminal on the control channel:
  • the order includes two parts, the first part is the identification information of the designated terminal of the transmitting terminal; the second part indicates whether the transmitted data is network encoded data, and each terminal sends the signaling at the first time, and the second part indicates the sending at the time. Not network coded data, as shown in Figure 6.
  • Each terminal receives data broadcast by other terminals.
  • the signaling received by the terminal from the control channel acquires the identity information of the designated terminal corresponding to the transmitting terminal, and determines whether the data portion of the data packet is network coded data.
  • the signaling received by the terminal for the first time indicates that the data packet data portion is not network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 judge whether or not the data of the designated terminal is correctly received. If the data of the designated terminal is correctly received, the source data of the specified terminal and the received data of the designated terminal are subjected to binary domain XOR network coding processing, and then the network coded data is broadcast to other terminals; the terminal also needs to be in the control channel
  • the other terminal sends the following signaling: The first part of the signaling is the identity identification information of the designated terminal of the transmitting terminal; the second part indicates that the transmitted data is network coded data.
  • the terminal If the data of the designated terminal is not correctly received, the source data of the specified terminal is continuously broadcasted; the terminal also sends the following signaling to the other terminal on the control channel: The first part of the signaling is the sending terminal The identification information of the terminal is specified; the second part indicates that the transmitted data is not network coded data.
  • the terminal 1 correctly receives the source data 6 of the designated terminal 2, and the terminal 1 performs network coding of the data of the terminal 2 and the data of the terminal 2 to generate transmission data, and the terminal 1 broadcasts the network coded data to other terminals;
  • the following signaling is also sent to the other terminals on the control channel: the first part of the signaling is the identification information of the designated terminal 2 of the transmitting terminal; the second part indicates that the transmitted data is the network encoded data.
  • the terminal 2 does not correctly receive the data of the designated terminal 3, and the terminal 2 continues to broadcast its own source data 6 ; the terminal 2 also sends the following signaling to the other terminal on the control channel:
  • the first part of the signaling is the identity of the designated terminal 3 of the transmitting terminal. Identification information;
  • the second part indicates that the transmitted data is not network encoded data, as shown in FIG. 6.
  • the processing of other terminals is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the signaling received by the terminal from the control channel acquires the identity information of the designated terminal corresponding to the transmitting terminal, and determines whether the data packet data portion is network coded data. If the signaling indicates that the data packet portion is not network encoded data, the terminal directly decodes the received data to obtain data of the transmitting terminal. If the signaling indicates that the data packet portion is network coded data, the terminal performs joint decoding using the network coded data and the data received by the other terminal.
  • the terminal 1 has correctly received the data 6 of the designated terminal 2, and has not correctly received the data c sent by the terminal 3, but correctly received the network coded data of the terminal 3/source data with the terminal 4, so the terminal 1 passes the formula ⁇ ⁇ ⁇ / ⁇ ⁇
  • the processing of other terminals is similar.
  • Embodiment 5 The process of sharing data transmission is completed by using the network coding technology in the embodiment of the present invention.
  • the data sent by each terminal includes a frame header, and the frame header includes the following additional information:
  • the identity information and the information indicating whether the data packet portion is network coded data, and the identity information refers to information that can uniquely identify the user.
  • Terminal 1, terminal 2, terminal 3, terminal 4 randomly select one terminal as its own designated terminal. Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions. As shown in Figure 4:
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 randomly select one terminal as its own designated terminal. For example, the terminal 1 determines that the terminal 2 is its own designated terminal according to the above method. Similarly, the terminal 2 determines that the terminal 3 is its own designated terminal, and the terminal 3 determines that the terminal 4 is its own designated terminal, and the terminal 4 determines that the terminal 1 is its own. Specify the terminal. Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions. In practical applications, the terminal specified by the base station can also be selected.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively broadcast the shared data ", b, c, d" on the own resources, and the other terminals receive the data.
  • the data sent by each terminal further includes such a frame header: the frame header includes two In part, the first part is the identification information of the designated terminal of the transmitting terminal; the second part indicates whether the transmitted data is network encoded data, and when the terminal transmits the data for the first time, the second part indicates that the network encoded data is not transmitted at this time. , as shown in Figure 5.
  • Each terminal receives data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal through the packet frame header, and determines whether the data part of the data packet is network coded data.
  • the data packet frame header received by each terminal for the first time indicates that the data packet data portion is not network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 determine whether the data of the designated terminal is correctly received; if the data of the designated terminal is correctly received, the source data of the terminal is different from the data of the received terminal. Or network coding processing, and then broadcasting the network coded data to other terminals, the transmitted data also includes the above frame header, and the second part of the frame header indicates that the network coded data is sent; if the data of the designated terminal is not correctly received, Then continue to broadcast its own source data, the transmitted data also includes the above frame header, and the second part of the frame header indicates that the network coded data is not transmitted.
  • the terminal 1 correctly receives the source data 6 of the designated terminal 2, and the terminal 1 performs network coding of the data of the terminal 2 and the data of the terminal 2 to generate the transmission data "® 6 , and finally Terminal 1 broadcasts the network coded data to other terminals.
  • the following frame header is added before the data:
  • the first part of the frame header is the identity identification information of the terminal 2, and the second part indicates that the network coded data is transmitted.
  • the terminal 2 does not correctly receive the data of the designated terminal 3, and the terminal 2 continues to broadcast its own source data 6.
  • the following frame header is added before the data: the first part of the frame header is the identity identification information of the terminal 3, and the second part indicates the transmission. It is not network coded data, as shown in Figure 5.
  • the processing of other terminals is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal through the packet frame header, and determines whether the data part of the data packet is network coded data. If the data packet frame header indicates that the data packet data portion is not network coded data, the terminal directly decodes the received data to obtain data of the transmitting terminal. If the data packet frame header indicates that the data packet data portion is network coded data, the terminal uses the network coded data to perform joint decoding with the data received by other terminals.
  • the terminal 1 has correctly received the data 6 of the designated terminal 2, and has not correctly received the data c sent by the terminal 3, but correctly received the network encoded data c ® d of the terminal 3 and the source data of the terminal 4, so the terminal 1 passes the formula ⁇ ⁇ ⁇ / ⁇ ⁇
  • the source data c of the terminal 3 is obtained; the terminal 1 obtains the source data 6 , c , d of the other terminals by this method.
  • the processing of other terminals is similar.
  • the sixth embodiment of the present invention provides a process of sharing data transmission between the terminals in the virtual MIMO structure composed of four terminals, and the terminal is in the control channel.
  • each terminal is in the control channel.
  • Sending signaling to other terminals, the signaling includes the following additional information: identity information of the designated terminal and information indicating whether the data portion of the data packet is network coded data, and the identity information refers to information that can uniquely identify the user.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 randomly select one terminal as its own designated terminal. Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions. As shown in Figure 4:
  • Terminal 1 terminal 2, terminal 3, and terminal 4 randomly select one terminal for its own designation.
  • Terminal For example, the terminal 1 determines that the terminal 2 is its own designated terminal according to the above method.
  • the terminal 2 determines that the terminal 3 is its own designated terminal, and the terminal 3 determines that the terminal 4 is its own designated terminal, and the terminal 4 determines that the terminal 1 is its own.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively broadcast the shared data ", c, d, and other terminals to receive on their own resources.
  • Each terminal also sends the following signaling to the other terminal on the control channel: signaling includes Two parts, the first part is the identification information of the designated terminal of the transmitting terminal; the second part indicates whether the transmitted data is network coded data, and when the terminal sends the signaling for the first time, the second part indicates that the network is not transmitted at this time. Encoded data, as shown in Figure 6.
  • Each terminal receives data broadcast by other terminals.
  • the signaling received by the terminal from the control channel acquires the identity information of the designated terminal corresponding to the transmitting terminal, and determines whether the data portion of the data packet is network coded data.
  • the signaling received by the terminal for the first time indicates that the data packet data portion is not network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 judge whether or not the data of the designated terminal is correctly received. If the data of the designated terminal is correctly received, the source data of the specified terminal and the received data of the designated terminal are subjected to binary domain XOR network coding processing, and then the network coded data is broadcast to other terminals; the terminal also needs to be in the control channel
  • the other terminal sends the following signaling: The first part of the signaling is the identity identification information of the designated terminal of the transmitting terminal; the second part indicates that the transmitted data is network coded data.
  • the terminal If the data of the designated terminal is not correctly received, the source data of the specified terminal is continuously broadcasted; the terminal also sends the following signaling to the other terminal on the control channel:
  • the first part of the signaling is the identity identification information of the designated terminal of the transmitting terminal; Indicates that the data sent is not network encoded data.
  • the terminal 1 correctly receives the source data of the designated terminal 2, and the terminal 1 performs network coding of the data of the terminal 2 and the data of the terminal 2 to generate transmission data, and the terminal 1 broadcasts the network coded data to other terminals;
  • the following signaling is to be sent to other terminals on the control channel: the first part of the signaling is the identification information of the designated terminal 2 of the transmitting terminal; the second part indicates the sending The data is network encoded data.
  • the terminal 2 does not correctly receive the data of the designated terminal 3, and the terminal 2 continues to broadcast its own source data 6 ; the terminal 2 also sends the following signaling to the other terminal on the control channel:
  • the first part of the signaling is the identity of the designated terminal 3 of the transmitting terminal. Identification information;
  • the second part indicates that the transmitted data is not network encoded data, as shown in FIG. 6.
  • the processing of other terminals is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the message received by the terminal from the control channel "orders, obtains the identity information of the designated terminal corresponding to the transmitting terminal, and determines whether the data packet data portion is network coded data. If the signaling indicates that the data packet data portion is not network coded data, the terminal directly receives the data. The obtained data is decoded to obtain data of the transmitting terminal. If the signaling indicates that the data packet data portion is network encoded data, the terminal uses the network encoded data to perform joint decoding with the data received by other terminals. For example: Terminal 1 has correctly received the designation.
  • the data 6 of the terminal 2 does not correctly receive the data c sent by the terminal 3, but correctly receives the network encoded data of the terminal 3/the source data of the terminal 4, and therefore the terminal 1 obtains the terminal 3 by the formula ⁇ ⁇ ⁇ / ⁇ ⁇ Source data c;
  • the terminal 1 obtains the source data 6 , c , d of other terminals by this method.
  • the processing conditions of other terminals are similar.
  • Embodiment 7 The process of sharing data transmission is completed by using the network coding technology according to the embodiment of the present invention.
  • the data sent by each terminal includes a frame header, and the frame header includes the following additional information:
  • the identity information and the information indicating whether the data packet portion is network coded data, and the identity information refers to information that can uniquely identify the user.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select other terminals to the terminal with the best channel condition as their designated terminals according to the channel conditions of the respective terminals to themselves.
  • each terminal needs to re-determine its corresponding designated terminal according to the above method.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 select the other terminal to the terminal with the best channel condition as the self according to the channel conditions of each terminal to itself.
  • the designated terminal of the body For example, the channel transfer matrix of this embodiment is as follows. The nth row element represents the channel transfer value of other terminals to the terminal n, and the larger the element value in the channel transfer matrix, the better the channel condition is:
  • the terminal 1 determines that the terminal 2 is its own designated terminal. Similarly, the terminal 2 determines that the terminal 3 is its own designated terminal, the terminal 3 determines that the terminal 4 is its own designated terminal, and the terminal 4 determines the terminal 1 For its own designated terminal, as shown in Figure 4. In the next transmission, each terminal needs to re-determine its corresponding designated terminal according to the above method.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively broadcast the shared data ", c, d, and other terminals to receive on their own resources.
  • the data sent by each terminal further includes such a frame header: the frame header includes two parts, The first part is the identification information of the designated terminal of the transmitting terminal; the second part indicates whether the transmitted data is network coded data, and when the terminal transmits the data for the first time, the second part indicates that the network coded data is not transmitted at this time, such as Figure 7 shows.
  • Each terminal receives data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal through the packet frame header, and determines whether the data part of the data packet is network coded data.
  • the data packet frame header received by each terminal for the first time indicates that the data packet data portion is not network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 select the other terminal to the terminal with the best channel condition as its own designated terminal according to the updated channel conditions of each terminal to itself.
  • the updated channel transfer matrix in this embodiment is as follows.
  • the nth row element represents the channel transfer value of other terminals to the terminal n, and the larger the element value in the channel transfer matrix, the better the channel condition is: f 1 0.9 0.5 0.5,
  • Terminal 1 determines that the terminal 2 is its own designated terminal according to the above method. Similarly, the terminal 2 determines that the terminal 4 is its own designated terminal, the terminal 3 determines that the terminal 2 is its own designated terminal, and the terminal 4 determines the terminal. 3 is its own designated terminal, as shown in Figure 8.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 determine whether the data of the designated terminal is correctly received; if the data of the designated terminal is correctly received, the source data of the terminal is different from the data of the received terminal. Or network coding processing, and then broadcasting the network coded data to other terminals, the transmitted data also includes the above frame header, and the second part of the frame header indicates that the network coded data is sent; if the data of the designated terminal is not correctly received, Then continue to broadcast its own source data, the transmitted data also includes the above frame header, and the second part of the frame header indicates that the network coded data is not transmitted.
  • the terminal 1 correctly receives the source data 6 of the designated terminal 2, and the terminal 1 performs network coding of the data of the terminal 2 and the data of the terminal 2 to generate transmission data "® 6 , and the terminal 1 broadcasts the network coded data to other terminals.
  • the following frame header is added before the data: the first part of the frame header is the identification information of the designated terminal 2, and the second part indicates that the network coded data is transmitted.
  • the terminal 2 does not correctly receive the data of the designated terminal 4, and the terminal 2 Continue to broadcast its own source data 6 , and add the following frame header before the data:
  • the first part of the frame header is the identification information of the terminal 4, and the second part indicates that the network coded data is not transmitted, as shown in Figure 7.
  • Other terminals The processing situation is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal through the packet frame header, and determines whether the data part of the data packet is network coded data. If the data packet frame header indicates that the data packet data portion is not network coded data, the terminal directly decodes the received data to obtain data of the transmitting terminal. If the data packet frame header indicates that the data packet data portion is network coded data, the terminal uses the network coded data to perform joint decoding with the data received by other terminals. For example: Terminal 1 has correctly received the data of the specified terminal 2, no The data c sent by the terminal 3 is correctly received, but the network coded data c ® b of the terminal 3 and the source data of the terminal 4 are correctly received. Therefore, the terminal 1 obtains the source data c of the terminal 3 by a formula; the terminal 1 obtains by the method Source data 6 , c , d of other terminals. The processing of other terminals is similar.
  • the eighth embodiment of the present invention provides a process of sharing data transmission between the terminals in the virtual MIMO structure composed of four terminals, and the terminal is in the control channel.
  • each terminal is in the control channel.
  • Sending signaling to other terminals, the signaling includes the following additional information: identity information of the designated terminal and information indicating whether the data portion of the data packet is network coded data, and the identity information refers to information that can uniquely identify the user.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select other terminals to the terminal with the best channel condition as their designated terminals according to the channel conditions of the respective terminals to themselves. In the next transmission, each terminal needs to re-determine its designated terminal according to the above method.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 select the other terminal to the terminal with the best channel condition as the designated terminal according to the channel condition of each terminal to itself.
  • the channel transfer matrix of this embodiment is as follows.
  • the nth row elements respectively represent the channel transfer values of other terminals to the terminal n.
  • the larger the element value in the channel transfer matrix, the better the channel condition is:
  • the terminal 1 determines that the terminal 2 is its own designated terminal. Similarly, the terminal 2 determines that the terminal 3 is its own designated terminal, the terminal 3 determines that the terminal 4 is its own designated terminal, and the terminal 4 determines the terminal 1 For its own designated terminal, as shown in Figure 4. In the next transmission, each terminal needs to re-determine its corresponding designated terminal according to the above method.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively broadcast the shared data on their own resources", b , c , d , other terminals receive.
  • Each terminal also sends the following signaling to the other terminals on the control channel:
  • the signaling includes two parts, the first part is the identity identification information of the designated terminal of the transmitting terminal; the second part indicates whether the transmitted data is network coded data, and each terminal is When the signaling is sent for the first time, the second part of the signaling indicates that the network coded data is not transmitted at this time, as shown in FIG.
  • Each terminal receives data broadcast by other terminals.
  • the signaling received by the terminal from the control channel acquires the identity information of the designated terminal corresponding to the transmitting terminal, and determines whether the data portion of the data packet is network coded data.
  • the signaling received by the terminal for the first time indicates that the data packet data portion is not network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select other terminals to the terminal with the best channel condition as their designated terminals according to the updated channel conditions of the respective terminals to themselves.
  • the updated channel transfer matrix in this embodiment is as follows.
  • the nth row element represents the channel transfer value of the other terminal to the terminal n, and the larger the element value in the channel transfer matrix, the better the channel condition is:
  • the terminal 1 determines that the terminal 2 is its own designated terminal.
  • the terminal 2 determines that the terminal 4 is its own designated terminal
  • the terminal 3 determines that the terminal 2 is its own designated terminal
  • the terminal 4 determines that the terminal 3 is Its own designated terminal, as shown in Figure 8.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 judge whether or not the data of the designated terminal is correctly received. If the terminal correctly receives the data of its designated terminal, the source data of the terminal and the received data of the designated terminal are subjected to binary domain XOR network coding processing, and then the network coded data is broadcast to other terminals, and the terminal is also required to
  • the control channel sends the following signaling to other terminals: The first part of the signaling is the identity identification information of the designated terminal of the transmitting terminal; the second part indicates that the transmitted data is the network coded data.
  • the terminal 1 If the data of the designated terminal is not correctly received, the source data of the terminal is continuously broadcasted, and the terminal also sends the following signaling to the other terminal on the control channel:
  • the first part of the signaling is The identification information of the designated terminal of the transmitting terminal; the second part indicates that the transmitted data is not network encoded data.
  • the terminal 1 correctly receives the source data 6 of the designated terminal 2, and the terminal 1 performs network coding of the data of the terminal 2 and the data of the terminal 2 to generate transmission data "® 6 , and the terminal 1 broadcasts the network coded data to other terminals.
  • the terminal 1 also sends signaling to the other terminal on the control channel: the first part of the signaling is the identity identification information of the terminal 2, and the second part indicates that the network coded data is transmitted.
  • the terminal 2 does not correctly receive the data of the designated terminal 4, the terminal 2 continue to broadcast its own source data 6 , the terminal 2 also sends signaling to other terminals on the control channel: the first part of the signaling is the identification information of the terminal 4, and the second part indicates that the network encoded data is not transmitted, as shown in FIG.
  • the processing of other terminals is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the signaling received by the terminal from the control channel acquires the identity information of the designated terminal corresponding to the transmitting terminal, and determines whether the data packet data portion is network coded data. If the signaling indicates that the data packet portion is not network encoded data, the terminal directly decodes the received data to obtain data of the transmitting terminal. If the signaling indicates that the data packet portion is network coded data, the terminal performs joint decoding using the network coded data and the data received by the other terminal.
  • the terminal 1 has correctly received the data 6 of the designated terminal 2, and has not correctly received the data c sent by the terminal 3, but correctly received the network encoded data c ® of the terminal 3 and the source data of the terminal 4, so the terminal 1 adopts the formula ⁇ The source data c of the terminal 3 is obtained ; the terminal 1 obtains the source data 6 , c , d of the other terminals by this method.
  • the processing of other terminals is similar.
  • Embodiment 9 The process of sharing data transmission is completed by using the network coding technology according to the embodiment of the present invention.
  • the data sent by each terminal includes a frame header, and the frame header includes the following additional information:
  • the identity information and the information indicating whether the data packet portion is network coded data, and the identity information refers to information that can uniquely identify the user.
  • Terminal 1, terminal 2, terminal 3, terminal 4 According to the channel conditions of the respective terminals, the terminal with the worst channel condition to other terminals is selected as its own designated terminal. In the next transmission, each terminal needs to re-determine its designated terminal according to the above method.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select the terminal having the worst channel condition to the other terminal as the designated terminal of the terminal according to the channel condition of each terminal.
  • the SINR values of the channels in this embodiment are as follows.
  • the elements in the nth column represent the SINRs of the terminal n to other terminal links, respectively.
  • the unit is dB, * indicates that the value is null, and the smaller the SINR value, the more the channel conditions are. Poor:
  • Terminal 1 determines that terminal 2 is its own designated terminal according to the above method; similarly, terminal 2 determines that terminal 3 is its own designated terminal, terminal 3 determines that terminal 4 is its own designated terminal, and terminal 4 determines terminal 1 For its own designated terminal, as shown in Figure 4. In the next transmission, each terminal needs to re-determine its corresponding designated terminal according to the above method.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively broadcast the shared data ", c, d, and other terminals to receive on their own resources.
  • the data sent by each terminal further includes such a frame header: the frame header includes two parts, The first part is the identification information of the designated terminal of the transmitting terminal; the second part indicates whether the transmitted data is network coded data, and when the terminal transmits the data for the first time, the second part indicates that the network coded data is not transmitted at this time, such as Figure 7 shows.
  • Each terminal receives data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal through the packet frame header, and determines whether the data part of the data packet is network coded data.
  • the data packet frame header received by each terminal for the first time indicates that the data packet data portion is not network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select their own terminal with the worst channel channel condition as their own designated terminal according to the updated channel condition of each terminal to each terminal.
  • the SINR value after the channel update in this embodiment is as follows.
  • the nth column element represents the SINR of the terminal n to other terminal links, and the unit is dB. * indicates that the value is null, and the SINR value is smaller, the channel is The worse the condition:
  • Terminal 1 determines that terminal 2 is its own designated terminal according to the above method. Similarly, terminal 2 determines that terminal 4 is its own designated terminal, terminal 3 determines that terminal 2 is its own designated terminal, and terminal 4 determines that terminal 3 is Its own designated terminal, as shown in Figure 8.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 determine whether the data of the designated terminal is correctly received; if the data of the designated terminal is correctly received, the source data of the terminal is different from the data of the received terminal. Or network coding processing, and then broadcasting the network coded data to other terminals, the transmitted data also includes the above frame header, and the second part of the frame header indicates that the network coded data is sent; if the data of the designated terminal is not correctly received, Then continue to broadcast its own source data, the transmitted data also includes the above frame header, and the second part of the frame header indicates that the network coded data is not transmitted.
  • the terminal 1 correctly receives the source data 6 of the designated terminal 2, and the terminal 1 performs network coding of the data of the terminal 2 and the data of the terminal 2 to generate transmission data "® 6 , and the terminal 1 broadcasts the network coded data to other terminals.
  • the following frame header is added before the data: the first part of the frame header is the identification information of the designated terminal 2, and the second part indicates that the network coded data is transmitted.
  • the terminal 2 does not correctly receive the data of the designated terminal 4, and the terminal 2 Continue to broadcast its own source data 6 , and add the following frame header before the data:
  • the first part of the frame header is the identification information of the terminal 4, and the second part indicates that the network coded data is not transmitted, as shown in Figure 7.
  • Other terminals The processing situation is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal through the packet frame header, and determines whether the data part of the data packet is network coded data. If the packet header indicates that the data portion of the packet is not network encoded data, the terminal directly Decoding the received data to obtain data of the transmitting terminal. If the data packet frame header indicates that the data packet data portion is network coded data, the terminal uses the network coded data to perform joint decoding with the data received by other terminals. For example, the terminal 1 has correctly received the data 6 of the designated terminal 2, and has not correctly received the data c sent by the terminal 3, but correctly received the network encoded data of the terminal 3 and the source data of the terminal 4, so the terminal 1 obtains the terminal by the formula. c 3 of the source data; terminal 1 obtains data of the other terminal of the source 6, c, d by the method. The processing of other terminals is similar.
  • Embodiment 10 The process of sharing data transmission is completed by using the network coding technology according to the embodiment of the present invention.
  • each terminal sends signaling to other terminals on a control channel, where the signaling includes the following additional information: Specifying identity information of the terminal and information indicating whether the data packet portion is network coded data, and the identity information refers to information that can uniquely identify the user.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select their own terminal with the worst channel condition of the other terminal as their designated terminal according to the channel condition of the terminal to each terminal. In the next transmission, each terminal needs to re-determine its designated terminal according to the above method.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select the terminal having the worst channel condition to the other terminal as the designated terminal of the terminal according to the channel condition of each terminal.
  • the SINR values of the channels in this embodiment are as follows.
  • the elements in the nth column represent the SINRs of the terminal n to other terminal links, respectively.
  • the unit is dB, * indicates that the value is null, and the smaller the SINR value, the more the channel conditions are. Poor:
  • the terminal 1 determines that the terminal 2 is its own designated terminal according to the above method. Similarly, the terminal 2 determines that the terminal 3 is its own designated terminal, and the terminal 3 determines that the terminal 4 is its own designated terminal. Terminal 4 determines that terminal 1 is its own designated terminal, as shown in FIG. In the next transmission, each terminal needs to re-determine its corresponding designated terminal according to the above method.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively broadcast the shared data ", c, d, and other terminals to receive on their own resources.
  • Each terminal also sends the following signaling to the other terminal on the control channel: signaling includes Two parts, the first part is the identification information of the designated terminal of the transmitting terminal; the second part indicates whether the transmitted data is network coded data, and when the terminal sends the signaling for the first time, the second part of the signaling indicates that the data is sent at this time. Not the network coded data, as shown in Figure 9.
  • Each terminal receives data broadcast by other terminals.
  • the signaling received by the terminal from the control channel acquires the identity information of the designated terminal corresponding to the transmitting terminal, and determines whether the data portion of the data packet is network coded data.
  • the signaling received by the terminal for the first time indicates that the data packet data portion is not network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select their own terminal with the worst channel channel condition as their designated terminal according to the updated channel condition of each terminal to each terminal.
  • the SINR value after the channel update in this embodiment is as follows.
  • the nth column element represents the SINR of the terminal n to other terminal links, and the unit is dB. * indicates that the value is null, and the SINR value is smaller, the channel is The worse the condition:
  • Terminal 1 determines that terminal 2 is its own designated terminal according to the above method. Similarly, terminal 2 determines that terminal 4 is its own designated terminal, terminal 3 determines that terminal 2 is its own designated terminal, and terminal 4 determines that terminal 3 is Its own designated terminal, as shown in Figure 8.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 judge whether or not the data of the designated terminal is correctly received. If the terminal correctly receives the data of its designated terminal, the source data of the terminal and the received data of the designated terminal are subjected to binary domain XOR network coding processing, and then the network coded data is broadcast to other terminals, and the terminal is also required to
  • the control channel sends the following signaling to other terminals: Signaling One part is the identification information of the designated terminal of the transmitting terminal; the second part indicates that the transmitted data is network encoded data.
  • the terminal 1 If the data of the designated terminal is not correctly received, the source data of the terminal is continuously broadcasted, and the terminal also sends the following signaling to the other terminal on the control channel:
  • the first part of the signaling is the identity identification information of the designated terminal of the transmitting terminal; Indicates that the data sent is not network encoded data.
  • the terminal 1 correctly receives the source data 6 of the designated terminal 2, and the terminal 1 performs network coding of the data of the terminal 2 and the data of the terminal 2 to generate transmission data "® 6 , and the terminal 1 broadcasts the network coded data to other terminals.
  • the terminal 1 also sends signaling to the other terminal on the control channel: the first part of the signaling is the identity identification information of the terminal 2, and the second part indicates that the network coded data is transmitted.
  • the terminal 2 does not correctly receive the data of the designated terminal 4, the terminal 2 continue to broadcast its own source data 6 , the terminal 2 also sends signaling to other terminals on the control channel: the first part of the signaling is the identification information of the terminal 4, and the second part indicates that the network encoded data is not transmitted, as shown in FIG.
  • the processing of other terminals is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the signaling received by the terminal from the control channel acquires the identity information of the designated terminal corresponding to the transmitting terminal, and determines whether the data packet data portion is network coded data. If the signaling indicates that the data packet portion is not network encoded data, the terminal directly decodes the received data to obtain data of the transmitting terminal. If the signaling indicates that the data packet portion is network coded data, the terminal performs joint decoding using the network coded data and the data received by the other terminal.
  • the terminal 1 has correctly received the data 6 of the designated terminal 2, and has not correctly received the data c sent by the terminal 3, but correctly received the network coded data c ® of the terminal 3 and the network coded data d ® c of the terminal 4, so The terminal 1 obtains the source data c of the terminal 3 through the formula b ® c ® b, and the terminal 1 obtains the source data of the terminal 4 through the formula c ® ® c. The terminal 1 obtains the source data 6 , c of the other terminal through the method. d.
  • the processing of other terminals is similar.
  • the eleventh embodiment of the present invention provides a virtual MIMO structure composed of four terminals, and the process of sharing data transmission is completed between the terminals by using the network coding technology according to the embodiment of the present invention.
  • the data sent by each terminal includes a frame header, and the frame header includes the following additional information: identity information of the designated terminal and information indicating whether the data part of the data packet is network coded data, where the identity information refers to Information that uniquely identifies the user.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 randomly select one terminal as its own designated terminal. In the next transmission, each terminal needs to re-determine its corresponding designated terminal according to the above method.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 randomly select one terminal as its own designated terminal. For example, the terminal 1 determines that the terminal 2 is its own designated terminal according to the above method. Similarly, the terminal 2 determines that the terminal 3 is its own designated terminal, and the terminal 3 determines that the terminal 4 is its own designated terminal, and the terminal 4 determines that the terminal 1 is Its own designated terminal, as shown in Figure 4. In the next transmission, each terminal needs to re-determine its designated terminal according to the above method.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively broadcast the shared data ", c, d, and other terminals to receive on their own resources.
  • the data sent by each terminal further includes such a frame header: the frame header includes two parts, The first part is the identification information of the designated terminal of the transmitting terminal; the second part indicates whether the transmitted data is network coded data, and when the terminal transmits the data for the first time, the second part indicates that the network coded data is not transmitted at this time, such as Figure 7 shows.
  • Each terminal receives data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal through the packet frame header, and determines whether the data part of the data packet is network coded data.
  • the data packet frame header received by each terminal for the first time indicates that the data packet data portion is not network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 randomly select one terminal as its own designated terminal. For example, the terminal 1 determines that the terminal 2 is its own designated terminal according to the above method. Similarly, the terminal 2 determines that the terminal 4 is its own designated terminal, the terminal 3 determines that the terminal 2 is its own designated terminal, and the terminal 4 determines that the terminal 3 is its own. Designated terminal, as shown in Figure 8. The terminal 1, the terminal 2, the terminal 3, and the terminal 4 determine whether the data of the designated terminal is correctly received; if the data of the designated terminal is correctly received, the source data of the terminal is different from the data of the received terminal.
  • the transmitted data also includes the above frame header, and the second part of the frame header indicates that the network coded data is sent; if the data of the designated terminal is not correctly received, Then continue to broadcast its own source data, the transmitted data also includes the above frame header, and the second part of the frame header indicates that the network coded data is not transmitted.
  • the terminal 1 correctly receives the source data 6 of the designated terminal 2, and the terminal 1 performs network coding of the data of the terminal 2 and the data of the terminal 2 to generate transmission data "® 6 , and the terminal 1 broadcasts the network coded data to other terminals.
  • the first part of the frame header is the identification information of the designated terminal 2, and the second part indicates that the network coded data is transmitted.
  • the terminal 2 does not correctly receive the data of the designated terminal 4, and the terminal 2 Continue to broadcast its own source data 6 , and add the following frame header before the data:
  • the first part of the frame header is the identification information of the terminal 4, and the second part indicates that the network coded data is not transmitted, as shown in Figure 7.
  • Other terminals The processing situation is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal through the packet frame header, and determines whether the data part of the data packet is network coded data. If the data packet frame header indicates that the data packet data portion is not network coded data, the terminal directly decodes the received data to obtain data of the transmitting terminal. If the data packet frame header indicates that the data packet data portion is network coded data, the terminal uses the network coded data to perform joint decoding with the data received by other terminals.
  • the terminal 1 has correctly received the data 6 of the designated terminal 2, and has not correctly received the data c sent by the terminal 3, but correctly received the network encoded data c ® b of the terminal 3 and the source data of the terminal 4 , so the terminal 1 passes the formula
  • the source data c of the terminal 3 is obtained; the terminal 1 obtains the source data 6 , c , d of the other terminals by the method.
  • the processing of other terminals is similar.
  • Example 12 The process of sharing data transmission is completed by the network coding technology in the embodiment of the present invention.
  • each terminal sends signaling to other terminals on the control channel, where the signaling includes the following additional information:
  • the information and the information indicating whether the data packet portion is network coded data, and the identity information refers to information capable of uniquely identifying the user.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 randomly select one terminal as its own designated terminal. In the next transmission, each terminal needs to re-determine its designated terminal according to the above method.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 randomly select one terminal as its own designated terminal. For example, the terminal 1 determines that the terminal 2 is its own designated terminal according to the above method. Similarly, the terminal 2 determines that the terminal 3 is its own designated terminal, and the terminal 3 determines that the terminal 4 is its own designated terminal, and the terminal 4 determines that the terminal 1 is Its own designated terminal, as shown in Figure 4. In the next transmission, each terminal needs to re-determine its designated terminal according to the above method.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively broadcast the shared data ", c, d, and other terminals to receive on their own resources.
  • Each terminal also sends the following signaling to the other terminal on the control channel: signaling includes Two parts, the first part is the identification information of the designated terminal of the transmitting terminal; the second part indicates whether the transmitted data is network coded data, and when the terminal sends the signaling for the first time, the second part of the signaling indicates that the data is sent at this time. Not the network coded data, as shown in Figure 9.
  • Each terminal receives data broadcast by other terminals.
  • the signaling received by the terminal from the control channel acquires the identity information of the designated terminal corresponding to the transmitting terminal, and determines whether the data portion of the data packet is network coded data.
  • the signaling received by the terminal for the first time indicates that the data packet data portion is not network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 randomly select one terminal as its own designated terminal. For example, the terminal 1 determines that the terminal 2 is its own designated terminal according to the above method. Similarly, the terminal 2 determines that the terminal 4 is its own designated terminal, and the terminal 3 determines the terminal. End 2 is its own designated terminal, and terminal 4 determines that terminal 3 is its own designated terminal, as shown in FIG.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 judge whether or not the data of the designated terminal is correctly received. If the terminal correctly receives the data of its designated terminal, the source data of the terminal and the received data of the designated terminal are subjected to binary domain XOR network coding processing, and then the network coded data is broadcast to other terminals, and the terminal is also required to
  • the control channel sends the following signaling to other terminals: The first part of the signaling is the identity identification information of the designated terminal of the transmitting terminal; the second part indicates that the transmitted data is the network coded data.
  • the terminal 1 If the data of the designated terminal is not correctly received, the source data of the terminal is continuously broadcasted, and the terminal also sends the following signaling to the other terminal on the control channel:
  • the first part of the signaling is the identity identification information of the designated terminal of the transmitting terminal; Indicates that the data sent is not network encoded data.
  • the terminal 1 correctly receives the source data 6 of the designated terminal 2, and the terminal 1 performs network coding of the data of the terminal 2 and the data of the terminal 2 to generate transmission data "® 6 , and the terminal 1 broadcasts the network coded data to other terminals.
  • the terminal 1 also sends signaling to the other terminal on the control channel: the first part of the signaling is the identity identification information of the terminal 2, and the second part indicates that the network coded data is transmitted.
  • the terminal 2 does not correctly receive the data of the designated terminal 4, the terminal 2 continue to broadcast its own source data 6 , the terminal 2 also sends signaling to other terminals on the control channel: the first part of the signaling is the identification information of the terminal 4, and the second part indicates that the network encoded data is not transmitted, as shown in FIG.
  • the processing of other terminals is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the signaling received by the terminal from the control channel acquires the identity information of the designated terminal corresponding to the transmitting terminal, and determines whether the data packet data portion is network coded data. If the signaling indicates that the data packet portion is not network encoded data, the terminal directly decodes the received data to obtain data of the transmitting terminal. If the signaling indicates that the data packet portion is network coded data, the terminal performs joint decoding using the network coded data and the data received by the other terminal.
  • the terminal 1 has correctly received the data 6 of the designated terminal 2, and has not correctly received the data c sent by the terminal 3, but correctly received the network coded data c ® of the terminal 3 and The network coded data d ® c of the terminal 4, so that the terminal 1 obtains the source data c of the terminal 3 by the formula b ® c ® b, and the terminal 1 obtains the source data of the terminal 4 through the formula c ® ® c.
  • the method obtains source data 6 , c , d of other terminals.
  • the processing of other terminals is similar.
  • the thirteenth embodiment of the present invention provides a process for sharing data transmission by using a network coding technology according to an embodiment of the present invention in a virtual MIMO structure composed of four terminals.
  • a code sequence is used.
  • the scrambling code sequence and the orthogonal code sequence indicate the following additional information: the identity information of the designated terminal and the information indicating whether the data part of the data packet is network coded data, and the identity information refers to information that can uniquely identify the user.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select other terminals whose terminals are the best in their own channel conditions as their designated terminals according to the channel conditions of the respective terminals to themselves. Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions. As shown in Figure 4:
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively select other terminals to the terminal with the best channel condition as their designated terminals according to the channel conditions of the respective terminals to themselves.
  • the channel transfer matrix of this embodiment is as follows.
  • the nth row element represents the channel transfer value of other terminal to terminal n respectively.
  • the terminal 1 determines that the terminal 2 is its own designated terminal. Similarly, the terminal 2 determines that the terminal 3 is its own designated terminal, the terminal 3 determines that the terminal 4 is its own designated terminal, and the terminal 4 determines the terminal 1 Designate the terminal for itself. Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 respectively broadcast the shared data ", b, c, d" on their own resources, and the other terminals receive the data.
  • the data is transmitted by each terminal, the data is processed using different code sequences.
  • the code sequence A, the code sequence B, the code sequence C, and the code sequence D correspond to the terminal 1, the terminal 2, the terminal 3, and the terminal 4, respectively.
  • each terminal transmits data for the first time, it transmits its own source data, so the data is processed using its own code sequence. For example, the terminal 1 processes the transmitted data using the code sequence 1.
  • Each terminal receives data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal by using the identification code sequence, and determines whether the data is network encoded data.
  • the data received by each terminal for the first time is processed by the code sequence corresponding to the identity of the transmitting terminal, indicating that each terminal receives no network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, and the terminal 4 determine whether the data of the designated terminal is correctly received; if the data of the designated terminal is correctly received, the source data of the terminal is different from the data of the received terminal. Or network coding processing, and then processing the network coded data by using a code sequence corresponding to the identity of the specified terminal, and then broadcasting the processed network coded data to other terminals; if the data of the designated terminal is not correctly received, using and transmitting the terminal
  • the code sequence corresponding to the identity processes the source data and broadcasts its own source data.
  • the terminal 1 correctly receives the source data 6 of the designated terminal 2, and the terminal 1 performs network coding of the data of the terminal 2 and the data of the terminal 2 to generate the transmission data "® 6, and then uses the code sequence corresponding to the identity of the terminal 2.
  • 2 processing the network coded data, and the terminal 1 broadcasts the processed network coded data to other terminals.
  • the terminal 2 does not correctly receive the data of the designated terminal 3, and the terminal 2 uses the code sequence 2 corresponding to the identity of the terminal 2 to source data.
  • b processes, and then broadcasts the processed source data.
  • the processing of other terminals is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal by using the identification code sequence, and determines whether the data is network encoded data. If the code sequence number is consistent with the terminal number, indicating that the received network code is not received, the terminal directly decodes the received data to obtain the source data of the transmitting terminal. If code sequence number and terminal The number is inconsistent, indicating that the network coded data is received, and the specified terminal number and code sequence number corresponding to the sending terminal are the same. The terminal uses the network coded data to perform joint decoding with the data received by other terminals.
  • the terminal 1 has correctly received the data 6 of the designated terminal 2, and has not correctly received the data c sent by the terminal 3, but correctly received the network encoded data of the terminal 3/source data with the terminal 4, so the terminal 1 obtains the formula The source data c of the terminal 3; the terminal 1 obtains the source data 6 , c, d of the other terminals by this method.
  • the processing of other terminals is similar.
  • Embodiment 14 is a diagrammatic representation of Embodiment 14:
  • the fourteenth embodiment of the present invention proposes a process of sharing data transmission by using the network coding technology described in the embodiment of the present invention in a virtual MIMO structure composed of six terminals.
  • the terminal 1, the terminal 2, the terminal 3, the terminal 4, the terminal 5, and the terminal 6 randomly select one or more terminals as their designated terminals. For example, the terminal 1 determines that the terminal 2 and the terminal 4 are their own designated terminals according to the above method. Similarly, the terminal 2 determines that the terminal 3 is its own designated terminal, and the terminal 3 determines that the terminal 4 is its own designated terminal, and the terminal 4 determines The terminal 5 is its own designated terminal, the terminal 5 determines that the terminal 6 is its own designated terminal, and the terminal 6 determines that the terminal 1 is its own designated terminal. Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions.
  • the terminal 1, the terminal 2, the terminal 3, the terminal 4, the terminal 5, and the terminal 6 respectively broadcast the shared data ", c, d, e, / other terminals on their own resources for reception.
  • the data transmitted by each terminal further includes such a Frame header:
  • the frame header includes two parts. The first part is the identification information of the designated terminal of the transmitting terminal. The second part indicates whether the transmitted data is network coded data. When the terminal sends data for the first time, the second part indicates this. When the network coded data is not sent.
  • Each terminal receives data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal through the packet frame header, and determines whether the data part of the data packet is network coded data.
  • the data packet frame header received by each terminal for the first time indicates that the data packet data portion is not network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, the terminal 4, the terminal 5, and the terminal 6 determine whether the data of the designated terminal is correctly received; if the data of the designated terminal is correctly received, the source data of the terminal and the data of the designated terminal are received.
  • Performing an exclusive-OR network coding process of the binary domain, and then broadcasting the network coded data to other terminals, and the transmitted data also includes the above-mentioned frame header, and the second part of the frame header indicates that the network coded data is transmitted; if not correctly received
  • the data to the designated terminal continues to broadcast its own source data, and the transmitted data also includes the above-mentioned frame header.
  • the second part of the frame header indicates that the network encoded data is not transmitted.
  • the terminal 1 correctly receives the source data b and/or d of the designated terminal 2 and/or the terminal 4, and the terminal 1 performs network coding of the data of the terminal 2 and/or the terminal 4 in the binary domain to generate the transmission data.
  • terminal 1 broadcasts the network coded data to other terminals, and adds the following frame header before the data when transmitting:
  • the first part of the frame header is the identification information of the terminal 2 and/or the terminal 4
  • the identification information, the second part indicates that the network coded data is sent.
  • the terminal 2 does not correctly receive the data of the designated terminal 3, and the terminal 2 continues to broadcast its own source data 6.
  • the following frame header is added before the data: the first part of the frame header is the identity identification information of the terminal 3, and the second part indicates the transmission. Not network coded data.
  • the processing of other terminals is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the terminal obtains the identity information of the designated terminal corresponding to the sending terminal through the packet header, and determines whether the data part of the data packet is network coded data. If the packet header indicates that the data portion of the packet is not network encoded data, the terminal directly decodes the received data to obtain data of the transmitting terminal. If the packet header indicates that the data portion of the packet is network-encoded data, the terminal uses the network-encoded data to jointly decode the data transmitted by the other terminal.
  • the terminal 2 has correctly received the source data of the designated terminal 1, "the data transmitted by the terminal 4 is not correctly received, but the network encoded data ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ of the terminal 1 is correctly received, so the terminal 2 passes the formula" Obtaining the source data of the terminal 4 ⁇
  • the processing situation of the other terminals is similar.
  • Example 15 The fifteenth embodiment of the present invention proposes a process of sharing data transmission between the terminals in the virtual MIMO structure composed of the six terminals by using the network coding technology according to the embodiment of the present invention.
  • the terminal 1, the terminal 2, the terminal 3, the terminal 4, the terminal 5, and the terminal 6 randomly select one or more terminals as their designated terminals. For example, the terminal 1 determines that the terminal 2 and the terminal 4 are their own designated terminals according to the above method. Similarly, the terminal 2 determines that the terminal 3 is its own designated terminal, and the terminal 3 determines that the terminal 4 is its own designated terminal, and the terminal 4 determines The terminal 5 is its own designated terminal, the terminal 5 determines that the terminal 6 is its own designated terminal, and the terminal 6 determines that the terminal 1 is its own designated terminal. Once selected, the designated terminals corresponding to each terminal remain unchanged in subsequent transmissions.
  • the terminal 1, the terminal 2, the terminal 3, the terminal 4, the terminal 5, and the terminal 6 respectively broadcast the shared data ", c, d, e, / other terminals on their own resources for reception. Each terminal also needs to be in the control channel to the other.
  • the terminal sends the following signaling:
  • the signaling includes two parts, the first part is the identity identification information of the designated terminal of the sending terminal; the second part indicates whether the sent data is network coded data, and each terminal sends the signaling first time, The second part indicates that the network coded data is not transmitted at this time.
  • Each terminal receives data broadcast by other terminals.
  • the signaling received by the terminal from the control channel acquires the identity information of the designated terminal corresponding to the transmitting terminal, and determines whether the data portion of the data packet is network coded data.
  • the signaling received by the terminal for the first time indicates that the data packet data portion is not network coded data, and the terminal directly decodes the received data to obtain data of the transmitting terminal.
  • the terminal 1, the terminal 2, the terminal 3, the terminal 4, the terminal 5, and the terminal 6 judge whether or not the data of the own designated terminal is correctly received. If the data of the designated terminal is correctly received, the source data of the specified terminal and the received data of the designated terminal are subjected to binary domain XOR network coding processing, and then the network coded data is broadcast to other terminals; the terminal also needs to be in the control channel
  • the other terminal sends the following signaling: The first part of the signaling is the identity identification information of the designated terminal of the transmitting terminal; the second part indicates that the transmitted data is network coded data.
  • the terminal 1 If the data of the designated terminal is not correctly received, the source data of the specified terminal is continuously broadcasted; the terminal also sends the following signaling to the other terminal on the control channel:
  • the minute is the identification information of the designated terminal of the transmitting terminal; the second part indicates that the transmitted data is not the network encoded data.
  • the terminal 1 correctly receives the source data 6 and/or d of the designated terminal 2 and/or the terminal 4, and the terminal 1 performs the binary domain network coding of the data of the terminal 2 and/or the terminal 4 to generate the transmission data.
  • terminal 1 broadcasts network coded data to other terminals, and terminal 1 also sends the following signaling to other terminals on the control channel:
  • the first part of the signaling is the identification information of terminal 2 and/or The identification information of the terminal 4; the second part indicates that the transmitted data is network coded data.
  • the terminal 2 does not correctly receive the data of the designated terminal 3, the terminal 2 continues to broadcast its own source data 6 ; the terminal 2 also has to control the channel to other
  • the terminal sends the following signaling:
  • the first part of the signaling is the identity identification information of the designated terminal 3 of the transmitting terminal; the second part indicates that the transmitted data is not the network encoded data.
  • the processing situation of other terminals is similar.
  • Each terminal continues to receive data broadcast by other terminals.
  • the signaling received by the terminal from the control channel acquires the identity information of the designated terminal corresponding to the transmitting terminal, and determines whether the data packet portion is the network encoded data. If the signaling indicates that the data packet portion is not network encoded data, the terminal directly decodes the received data to obtain data of the transmitting terminal. If the signaling indicates that the data packet portion is network coded data, the terminal jointly decodes the data transmitted by the other terminal using the network coded data.
  • the terminal 2 has correctly received the source data of the designated terminal 1, "the data transmitted by the terminal 4 is not correctly received but the network coded data of the terminal 1 is correctly received” ⁇ 6 ⁇ Therefore, the terminal 2 passes the formula "ten ten ⁇ " The source data of the terminal 4 is obtained; the processing conditions of other terminals are similar.
  • the present invention proposes a data transmission method using network coding for a group-to-user data sharing model composed of a plurality of terminals, that is, each terminal performs network coding by using information with a designated terminal without relying on intermediate node auxiliary transmission. After that, the network coded data is broadcast to other terminals; the method solves the problem of data sharing between users in the network architecture, can reduce the number of data retransmissions, improve the data throughput of the network model, improve system transmission efficiency, and improve the network. Congestion situation.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are only schematic. For example, the division of the unit is only a logical function division.
  • the units described above as separate components may or may not be physically separated, and the components displayed as the units may or may not be physical units; they may be located in one place or distributed on multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit;
  • the unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the foregoing program may be stored in a computer readable storage medium, and when executed, the program includes
  • the foregoing storage method includes: a mobile storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like.
  • the above-described integrated unit of the present invention may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a standalone product.
  • the storage medium includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a removable storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention porte sur un procédé, un dispositif et un système de transmission de données. Le procédé comprend les opérations suivantes : un terminal sélectionne un ou plusieurs terminaux à titre de terminaux désignés ; et le terminal effectue un codage réseau de ses propres données sources et de données sources envoyées par les terminaux désignés et transmet les données ayant subi le codage réseau à l'extérieur.
PCT/CN2014/075291 2013-05-30 2014-04-14 Procédé, dispositif et système de transmission de données WO2014190817A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310211209.8A CN104219029A (zh) 2013-05-30 2013-05-30 一种数据传输方法、装置和系统
CN201310211209.8 2013-05-30

Publications (1)

Publication Number Publication Date
WO2014190817A1 true WO2014190817A1 (fr) 2014-12-04

Family

ID=51987973

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/075291 WO2014190817A1 (fr) 2013-05-30 2014-04-14 Procédé, dispositif et système de transmission de données

Country Status (2)

Country Link
CN (1) CN104219029A (fr)
WO (1) WO2014190817A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106332287B (zh) * 2015-07-01 2022-03-18 西安中兴新软件有限责任公司 一种数据传输方法及通信节点
CN106533626B (zh) * 2016-11-29 2019-06-11 南昌大学 一种基于正交码的网络编码方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101448337A (zh) * 2008-11-25 2009-06-03 上海无线通信研究中心 联合网络编码与信道编码的用户协作方法
CN102664711A (zh) * 2012-05-22 2012-09-12 重庆大学 一种基站反馈机制下的网络编码协作方法
WO2013009992A2 (fr) * 2011-07-13 2013-01-17 Qualcomm Incorporated Découverte de pairs assistée par un réseau avec un codage de réseau
CN103095423A (zh) * 2013-01-31 2013-05-08 西安电子科技大学 基于d2d组间通信的多用户协同传输方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101448337A (zh) * 2008-11-25 2009-06-03 上海无线通信研究中心 联合网络编码与信道编码的用户协作方法
WO2013009992A2 (fr) * 2011-07-13 2013-01-17 Qualcomm Incorporated Découverte de pairs assistée par un réseau avec un codage de réseau
CN102664711A (zh) * 2012-05-22 2012-09-12 重庆大学 一种基站反馈机制下的网络编码协作方法
CN103095423A (zh) * 2013-01-31 2013-05-08 西安电子科技大学 基于d2d组间通信的多用户协同传输方法

Also Published As

Publication number Publication date
CN104219029A (zh) 2014-12-17

Similar Documents

Publication Publication Date Title
CN109314562B (zh) 用于混合波束赋形分集的系统及方法
CN108352967B (zh) 用于车辆通信系统中的方法和装置
US10165591B2 (en) Multi-user multiple input multiple output wireless communications
US9629164B2 (en) Radio communication system, base station apparatus, terminal apparatus, and radio communication method in radio communication system
US20140169409A1 (en) Systems and Methods for Open-loop Spatial Multiplexing Schemes for Radio Access Virtualization
CN113316910B (zh) 用于发信号通知pdsch分集的系统和方法
TW201021603A (en) Methods and apparatus for scheduling wireless transmissions
JP2012506177A (ja) Ｍｉｍｏｏｆｄｍ／ｏｆｄｍａシステム中のコンテンションベースのアクセスチャネル設計方法
JP2018515964A (ja) 送信制御情報を多重化するための方法および装置
JP2011522457A (ja) 無線通信システムにおける多重アンテナ構成の信号伝達
CN106797240B (zh) 用于传送数据的方法、网络节点和装置
WO2018059529A1 (fr) Procédé et dispositif d'indication pour transmission de canal de commande physique
CN104737561A (zh) 用于无线网络中干扰对齐的用户协作协议的系统和方法
US10256954B2 (en) Data transmission method, device and system for downlink virtual multi-antenna system
WO2011001458A1 (fr) Système de communication sans fil, appareil de station de base, appareil de terminal et procédé de communication sans fil pour un système de communication sans fil
WO2013064044A1 (fr) Procédé de rétroaction d'un indicateur de commande de précodage, équipement utilisateur et station de base
WO2011035728A1 (fr) Procédé de précodage dans un système de relais coopératif, dispositif de communication et dispositif relais
WO2014190817A1 (fr) Procédé, dispositif et système de transmission de données
WO2016201976A1 (fr) Procédé de communication de terminal et terminal de communication
JP2010187139A (ja) 無線通信システム及び中継局装置
KR20160080040A (ko) 다중 중첩 신호를 가지는 셀에서의 신호 수신 장치 및 그 방법
CN116707591A (zh) 一种天线模式切换方法及相关装置
WO2011020290A1 (fr) Procédé de relais et appareil correspondant
CN112929060A (zh) 一种渔业船舶救助通讯系统及方法
WO2012071962A1 (fr) Procédé et dispositif de décodage de données de liaison descendante

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14804466

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14804466

Country of ref document: EP

Kind code of ref document: A1