WO2014190819A1 - 一种信息传输方法、中间节点和终端 - Google Patents

一种信息传输方法、中间节点和终端 Download PDF

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Publication number
WO2014190819A1
WO2014190819A1 PCT/CN2014/075480 CN2014075480W WO2014190819A1 WO 2014190819 A1 WO2014190819 A1 WO 2014190819A1 CN 2014075480 W CN2014075480 W CN 2014075480W WO 2014190819 A1 WO2014190819 A1 WO 2014190819A1
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Prior art keywords
data
uplink
intermediate node
base station
terminal
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PCT/CN2014/075480
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English (en)
French (fr)
Inventor
许进
张帅
徐俊
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中兴通讯股份有限公司
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Publication of WO2014190819A1 publication Critical patent/WO2014190819A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link
    • H04L2001/0097—Relays

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to an information transmission method, an intermediate node, and a terminal. Background technique
  • a relay node can be used to assist the communication, that is, the UE and the eNB first send the information to be exchanged to the relay node, and the relay node amplifies, forwards, or decodes the information to the eNB and the UE.
  • a poor quality link between the eNB and the UE is replaced by two better quality links between the eNB and the Relay node and between the Relay node and the UE, thereby Ensure that the eNB provides the quality of the service to the UEs within its coverage, as well as the capacity and data access rate of the system.
  • the UE that establishes a service relationship with the relay node is called a Relay UE.
  • a wireless communication network that does not include a Relay node
  • two types of wireless links are added: a backhaul link between the eNB and the relay node and an access link between the relay node and the UE.
  • the related Relay nodes cannot implement full-duplex communication, that is, the Relay node cannot implement data transmission and data reception on the same frequency resource and the same time resource. For example, if the Relay receives data transmitted by the eNB at a certain frequency resource, the Relay cannot transmit data to the UE on the frequency resource at the same time, and vice versa. That is to say, the data transmission of the downlink backhaul link is separated from the data transmission of the downlink access link on the time-frequency resource; the data transmission of the uplink backhaul link and the data transmission of the uplink access link are in the time-frequency resource. Separated on top.
  • the data transmission of the downlink backhaul link is performed only in certain specific subframes in one radio frame, and these specific subframes are called downlink backhaul subframes; uplink backhaul links Data transmission only in a few radio frames The subframes are performed, and these specific subframes are called uplink backhaul subframes.
  • the relay node cannot implement the functions of data transmission and data reception on the same frequency resource and the same time resource, the time-frequency resource utilization is low.
  • Network Coding The core idea of Network Coding is that the intermediate nodes in the network perform linear or non-linear processing on the data received on each channel.
  • These processing technologies may be binary domain XOR network coding, multi-domain network coding, Nested network coding, etc.
  • the data received from each channel can be referred to as source data, and the data obtained after network coding processing can 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. Summary of the invention
  • An object of the embodiments of the present invention is to provide an information transmission method, an intermediate node, and a terminal, which improve time-frequency resource utilization and system throughput.
  • an embodiment of the present invention provides an information transmission method, including: an intermediate node receives an uplink transmission scheduling information of an uplink between the intermediate node and the base station from a base station, and schedules the uplink transmission. Information is sent to one or more terminals.
  • the intermediate node is: a relay node, a micro base station, a home base station, or a terminal having a data forwarding function.
  • the foregoing method may further have the following feature: the intermediate node receives downlink data from the base station and uplink data from the one or more terminals, and performs network coding on the downlink data and the uplink data to obtain network coded data. .
  • the above method may also have the following feature: the uplink data is data sent by the terminal to the intermediate node between two consecutive uplink backhaul subframes.
  • the above method may also have the following feature: the data amount of the downlink data and the data amount of the uplink data are the same or different.
  • performing the downlink data and the uplink data on a network Encoding to obtain network encoded data includes:
  • the downlink data and/or the uplink data are padded using a predetermined sequence that is agreed in advance, so that the processed uplink data is processed.
  • the amount of data and the amount of downlink data are the same, and the processed uplink data and downlink data are network coded to obtain the network coded data.
  • the foregoing method may further have the following feature: when the data volume of the downlink data and the data volume of the uplink data are different, filling the downlink data and/or the uplink data by using a pre-defined known sequence includes:
  • the downlink data includes the data ai corresponding to the terminal UEi
  • the following filling processing is performed:
  • the bi is padded using a pre-agreed known sequence to obtain bi' such that the bi' is the same amount of data as the ai;
  • the ai is padded using a predetermined sequence known in advance to obtain ai' such that the data amount of the ai' and the bi are the same.
  • the foregoing method may further have the following features: when the uplink data is uplink data of multiple terminals, and the downlink data is downlink data that is sent by the base station to the multiple terminals by using the intermediate node, where the network coded data includes: The amount of data of the network coded data corresponding to each of the plurality of terminals, the indication information of the location of the network coded data corresponding to each terminal, and the network coded data corresponding to the plurality of terminals.
  • the foregoing method may further have the following feature: the intermediate node sends the network coded data to the base station according to the uplink transmission scheduling information.
  • the embodiment of the invention further provides an information transmission method, including:
  • the terminal obtains uplink transmission scheduling information of the uplink of the intermediate node to the base station from the intermediate node.
  • the intermediate node is: a relay node, a micro base station, a home base station, or a terminal having a data forwarding function.
  • the foregoing method may further have the following feature: the terminal monitors network coded data sent by the intermediate node to the base station according to the uplink transmission scheduling information, where the network coded data is The intermediate node performs network coding according to downlink data sent by the base station and uplink data sent by at least the terminal to the intermediate node.
  • the terminal according to the uplink transmission scheduling information, listening to the network coded data sent by the intermediate node to the base station, includes:
  • the terminal monitors network coded data sent by the intermediate node to the base station on an uplink backhaul subframe of the intermediate node.
  • the embodiment of the present invention further provides an intermediate node, where the intermediate node includes: a first receiving unit, and a first sending unit, where:
  • the first receiving unit is configured to receive uplink transmission scheduling information of an uplink between the intermediate node and the base station from a base station;
  • the first sending unit is configured to send the uplink transmission scheduling information to one or more terminals.
  • the intermediate node may also have the following features: the intermediate node is: a relay node, a micro base station, a home base station, or a terminal having a data forwarding function.
  • the intermediate node may further have the following features, the intermediate node further includes: a data processing unit; the first receiving unit is further configured to receive downlink data from the base station and uplink data from the one or more terminals ;
  • the data processing unit is configured to perform network coding on the downlink data and the uplink data to obtain network coded data.
  • the foregoing intermediate node may also have the following feature: the uplink data is data sent by the terminal to the intermediate node between two consecutive uplink backhaul subframes.
  • the intermediate node may also have the following characteristics: the data amount of the downlink data and the data amount of the uplink data are the same or different.
  • the foregoing intermediate node may also have the following features: the data processing unit performs network coding on the downlink data and the uplink data to obtain network coded data, including:
  • the downlink data and/or the uplink data are padded using a predetermined sequence that is agreed in advance, so that after processing
  • the data amount of the uplink data is the same as the data amount of the downlink data, and the processed uplink data and the downlink data are network-encoded to obtain the network coded data.
  • the intermediate node may further have the following feature, the data processing unit, when the data amount of the downlink data and the data amount of the uplink data are different, using the pre-agreed known sequence for the downlink data and/or the The padding of the upstream data includes:
  • the downlink data includes the data ai corresponding to the terminal UEi
  • the following filling processing is performed:
  • the bi is padded using a pre-agreed known sequence to obtain bi' such that the bi' is the same amount of data as the ai;
  • the ai is padded using a pre-agreed known sequence to obtain ai' such that the data amount of the ai' and the bi are the same.
  • the intermediate node may also have the following characteristics: when the uplink data is uplink data of multiple terminals, and the downlink data is downlink data that is sent by the base station to multiple terminals by using the intermediate node, the network coded data includes And the indication information of the location of the network coded data corresponding to each terminal of the plurality of terminals, and the network coded data corresponding to the multiple terminals.
  • the foregoing intermediate node may further have the following feature: the first sending unit is further configured to: send the network coded data to the base station according to the uplink transmission scheduling information.
  • the embodiment of the invention further provides a terminal, including:
  • the second receiving unit is configured to obtain uplink transmission scheduling information of the uplink of the intermediate node to the base station from the intermediate node.
  • the terminal may also have the following features, and the terminal further includes:
  • the monitoring unit is configured to monitor, according to the uplink transmission scheduling information, network coded data that is sent by the intermediate node to the base station, where the network coded data is downlink data sent by the intermediate node according to the base station, and at least The uplink data sent by the terminal to the intermediate node is obtained by network coding.
  • the foregoing terminal may further have the following feature: the intercepting unit, according to the uplink transmission scheduling information, listening to the network coded data sent by the intermediate node to the base station, includes: The intercepting unit monitors network coded data sent by the intermediate node to the base station on an uplink backhaul subframe of the intermediate node.
  • the intermediate node performs linear or non-linear processing on the information received on different channels, and then sends the processed information to the receiving node, which can further compress the network information stream, thereby saving transmission resources and utilizing efficiently.
  • Time-frequency resources improve system throughput.
  • the terminal can obtain the downlink data of the base station to the terminal by monitoring the network coded data sent by the intermediate node on the uplink backhaul subframe, and the data does not need to be transmitted through the intermediate node to the terminal, thereby saving time and frequency resources.
  • 1 is a flow chart of a method for performing network coding at a relay node
  • FIG. 2 is a flow chart of a method for performing network coding by Relay
  • 3 is a flow chart of a method for e B to participate in network coding
  • FIG. 4 is a flow chart of a method for a Relay UE to participate in network coding
  • Figure 5 is a schematic flow chart of the first embodiment
  • Embodiment 6 is a schematic flow chart of Embodiment 2.
  • Embodiment 8 is a schematic flow chart of Embodiment 4.
  • Embodiment 9 is a schematic flow chart of Embodiment 5.
  • FIG. 10 is a schematic diagram of a network coding pre-processing of data from a UE by a Relay in Embodiment 5;
  • FIG. 12 is a schematic diagram of a network coding pre-processing of data from an eNB by a Relay in Embodiment 6;
  • FIG. 14 is a schematic diagram of network coding pre-processing of data from an eNB, UE1, and UE2 by a Relay in Embodiment 7;
  • 15 is a schematic diagram of a decoding process of e B in Embodiment 7;
  • 16 is a schematic diagram of a decoding process of UE1 in Embodiment 7;
  • FIG. 17 is a schematic diagram of a decoding process of UE2 in Embodiment 7;
  • FIG. 18 is a block diagram of an intermediate node according to an embodiment of the present invention.
  • Figure 19 is a block diagram of a terminal of an embodiment of the present invention. Preferred embodiment of the invention
  • N Network Coding
  • the relay node uses the network coding technology to process the information of the eNB and the UE, which can effectively save the time-frequency resources of the system.
  • the embodiment of the present invention provides a wireless communication network. Using network coding methods, time-frequency resources can be utilized more efficiently and system throughput can be improved.
  • An embodiment of the present invention provides an information transmission method, including:
  • the intermediate node receives, from the base station, uplink transmission scheduling information of the uplink between the intermediate node and the base station, and sends the uplink transmission scheduling information to one or more terminals.
  • the intermediate node includes but is not limited to: a relay node, a micro base station, a home base station, or a terminal having a data forwarding function.
  • base stations such as Pico and Femto.
  • the method further includes: the intermediate node receiving downlink data from the base station and uplink data from the one or more terminals, and using the downlink data and the The uplink data is network coded to obtain network coded data.
  • the network coding may be a binary domain XOR network coding, a multi-domain network coding, a nested network coding, etc., which is not limited in this application.
  • the uplink data is data that is sent by the terminal to the intermediate node between two consecutive uplink backhaul subframes.
  • the uplink data is uplink data of one or more terminals; and the downlink data is downlink data that is sent by the base station to one or more terminals by using an intermediate node.
  • the data amount of the downlink data and the data amount of the uplink data are the same or different.
  • the performing network coding of the downlink data and the uplink data to obtain network coded data includes:
  • the downlink data and/or the uplink data are padded by using a predetermined sequence that is agreed in advance, so that the data volume of the padded uplink data is used.
  • the data amount of the downlink data is the same as that of the downlink data, and the padded uplink data and the downlink data are network coded to obtain the network coded data.
  • the uplink data and the downlink data are only the uplink data and the downlink data of one terminal, then: a) When the data amount of the uplink data from the terminal is smaller than the data amount of the downlink data from the base station, the intermediate node first uplinks from the terminal The data is padded using a pre-agreed known sequence such that the amount of data of the padded uplink data is equal to the amount of data of the downlink data from the base station, and then the padded uplink data and downlink data are network coded.
  • the intermediate node When the amount of data of the downlink data from the base station is smaller than the amount of data of the uplink data from the terminal, the intermediate node first fills the downlink data from the base station with a predetermined sequence known in advance, so that the data of the padded downlink data is made.
  • the amount is equal to the amount of data of the uplink data from the terminal, and then the uplink data and the padded downlink data are network coded.
  • the ai is padded using a pre-agreed known sequence to obtain ai' such that the data amount of the ai' and the bi are the same.
  • the uplink data processed by each terminal is concatenated, the processed downlink data sent by the base station to each terminal is concatenated, and the concatenated data is subjected to network coding processing.
  • the above-mentioned known sequence may be an all-zero sequence, or may be another sequence, such as a full-length sequence, and the two ends of the transceiver may be agreed upon.
  • the filling position may be filled in the end of the uplink data or the downlink data, or may be any position that has been agreed upon by the transmitting and receiving ends, such as a header, which is not limited in this application.
  • the downlink data is the downlink data that is sent by the base station to the multiple terminals by the intermediate node
  • the network coded data includes: each terminal of the multiple terminals Corresponding information of the amount of data of the network coded data, the location information of the location where the network coded data corresponding to each terminal is located, and the network coded data corresponding to the plurality of terminals.
  • the data size of the network coded data corresponding to each of the plurality of terminals and the indication information of the location of the network coded data corresponding to each terminal are usually located in the frame header portion.
  • the method further includes: the intermediate node sending the network coded data to the base station according to the uplink transmission scheduling information.
  • the embodiment of the invention further provides an information transmission method, including:
  • the base station sends the downlink data to the intermediate node; and, the uplink transmission scheduling information of the uplink between the intermediate node and the base station is sent to the intermediate node;
  • the intermediate node includes but is not limited to: a relay node, A micro base station, a home base station, or a terminal having a data forwarding function.
  • the method further includes: the base station decoding the network coded data according to the downlink data, to obtain uplink data of the terminal.
  • the base station decodes the network coded data according to the downlink data, and obtaining the uplink data of the terminal includes:
  • the downlink data is downlink data of one terminal:
  • the base station When the data volume of the downlink data is smaller than the data volume of the uplink data, the base station fills the downlink data by using a predetermined sequence that is agreed in advance, and obtains the padded downlink data according to the padded downlink data. Decoding the network encoded data to obtain uplink data of the terminal;
  • the base station decodes the network coded data according to the downlink data to obtain the padded uplink data, and removes the padded uplink data.
  • the pre-agreed known sequence obtains the uplink data of the terminal.
  • the base station decodes the network coded data according to the downlink data, and obtaining the uplink data of the terminal includes:
  • the base station Obtaining, by the base station, the data size of the network coded data of the UEi and the location of the network coded data of the UEi, the network coded data of the UEi, when the base station transmits the network coded data from the intermediate node, when the UEi
  • the data amount of the downlink data ai is equal to the data amount of the uplink data bi of the UEi, and the base station decodes the network coded data of the UEi according to the downlink data ai to obtain the uplink data bi of the UEi;
  • the base station Obtaining, by the base station, the data size of the network coded data of the UEi and the location of the network coded data of the UEi, the network coded data of the UEi, when the base station transmits the network coded data from the intermediate node, when the UEi
  • the data amount d of the downlink data ai, the data amount of the uplink data bi of the UEi, and the base station fills the downlink data ai using a predetermined sequence known in advance Charging, obtaining the padded downlink data ai', decoding the network coded data of the UEi according to the downlink data ai' to obtain the uplink data bi of the UEi;
  • the base station Obtaining, by the base station, the data size of the network coded data of the UEi and the location of the network coded data of the UEi, the network coded data of the UEi, when the base station transmits the network coded data from the intermediate node, when the UEi
  • the data amount of the downlink data ai is greater than the data amount of the uplink data bi of the UEi, and the base station decodes the network encoded data of the UEi according to the downlink data ai to obtain the padded uplink data bi', from the Removing the pre-agreed known sequence in bi' to obtain the uplink data of the UEi
  • the embodiment of the invention further provides an information transmission method, including:
  • the terminal obtains uplink transmission scheduling information of the uplink of the intermediate node to the base station from the intermediate node.
  • the intermediate node includes but is not limited to: a relay node, a micro base station, a home base station, or a terminal having a data forwarding function.
  • the method further includes: the terminal, according to the uplink transmission scheduling information, listening to network coded data sent by the intermediate node to the base station, where the network coded data is The intermediate node performs network coding according to the downlink data sent by the base station and the uplink data sent by the terminal to the intermediate node.
  • the monitoring, by the terminal, the network coded data sent by the intermediate node to the base station according to the uplink transmission scheduling information includes:
  • the terminal monitors network coded data sent by the intermediate node to the base station on an uplink backhaul subframe of the intermediate node.
  • the method further includes:
  • the terminal decodes the network coded data sent by the intercepted intermediate node to the base station according to the local uplink data, to obtain downlink data of the base station.
  • the terminal decodes the network coded data sent by the intercepted intermediate node to the base station according to the local uplink data, to obtain the base.
  • the downlink data of the station includes:
  • the network coded data of the terminal is decoded according to the local uplink data, to obtain downlink data of the terminal;
  • the network coded data includes only the network coded data of the plurality of terminals
  • the decoding, by the local uplink data, the network encoded data of the terminal, and obtaining the downlink data of the terminal includes:
  • the terminal fills the uplink data by using a pre-defined known sequence to obtain the padded uplink data, according to the padded uplink data.
  • the terminal decodes the network coded data of the terminal according to the uplink data to obtain the padded downlink data, and the padded downlink data.
  • the pre-agreed known sequence is removed to obtain downlink data of the base station.
  • the intermediate node is taken as a relay node as an example, but the application is not limited thereto.
  • the process of implementing the following embodiments can be referred to Figure 1-4.
  • 1 is the overall interaction process of e B, Relay, and UE.
  • FIG. 2 is an implementation flow of the relay
  • FIG. 3 is an implementation flow at the eNB
  • FIG. 4 is an implementation process at the UE.
  • Embodiment 1 of the present invention proposes a method for performing network coding in a Relay. As shown in FIG. 5, the method includes the following steps:
  • Step 101 In the system, the eNB and the UE exchange data with each other through the relay.
  • the relay node receives downlink data a from the eNB in the downlink backhaul subframe; the relay node receives the uplink data b from the UE in the uplink non-backhaul subframe.
  • the length of the data a, b is equal.
  • Step 102 The Relay demodulates and decodes the received data, and saves the decoded bit-level data in the Relay buffer area. Relay performs binary domain XOR network coding on data a, b to obtain bit level data 6.
  • Step 103 The eNB determines the uplink transmission mode of the relay according to the channel condition fed back by the relay, and sends the DCI information such as the uplink resource allocation and the modulation and coding mode of the backhaul link carrying the relay to the eNB to the relay.
  • Step 104 The Relay forwards the DCI information sent by the eNB to the UE.
  • Step 105 The relay sends the network coded data a @b to the eNB according to the DCI information sent by the eNB.
  • Step 106 In the uplink backhaul subframe of the relay, the eNB receives the information uploaded by the relay and performs demodulation and decoding. At the same time, the UE also listens to the information sent by the Relay to the eNB, and demodulates and decodes the intercepted information according to the DCI information sent by the previous Relay.
  • Step 107 After correctly decoding the eNB, the eNB feeds back the correctly received response information ACK to the Relay, and after correctly decoding the UE, it feeds back to the Relay the correctly received response message ACK.
  • Step 108 The eNB sends the correctly decoded network coded data a ® b to the local existing one.
  • Relay's downlink data a is the binary domain XOR "Ten 60" to get the UE's uplink data b.
  • the UE obtains the network coded data a. 6 and the existing uplink data b sent to the relay as the binary i or the exclusive ⁇ ⁇ ⁇ ⁇ to obtain the data eNB of the eNB.
  • Step 109 After receiving the ACK of the eNB, the relay deletes the uplink data b of the UE in the buffer area. After receiving the ACK of the response message from the UE, the Relay deletes the downlink data a of the eNB in the buffer.
  • Embodiment 2 The second embodiment of the present invention proposes a method for performing network coding in the relay. As shown in FIG. 6, the method includes the following steps:
  • Step 201 In the system, the eNB and the UE exchange data with each other through the relay.
  • the relay node receives downlink data a from the eNB in the downlink backhaul subframe; the relay node receives the uplink data b from the UE in the uplink non-backhaul subframe.
  • the length of the data a, b is equal.
  • Step 202 The Relay demodulates and decodes the received data, and saves the decoded bit-level data in the relay buffer area. Relay performs binary domain XOR network coding on data a, b to obtain bit level data 6.
  • Step 203 The eNB determines the uplink transmission mode of the relay according to the channel condition fed back by the relay, and sends the DCI information such as the uplink resource allocation and the modulation and coding mode of the backhaul link carrying the relay to the eNB to the relay.
  • Step 204 The Relay forwards the DCI information sent by the eNB to the UE.
  • Step 205 The Relay sends the network coded data a @b to the eNB according to the DCI information sent by the eNB.
  • Step 206 In the uplink backhaul subframe of the relay, the eNB receives the information uploaded by the relay and performs demodulation and decoding. At the same time, the UE also listens to the information sent by the Relay to the eNB, and demodulates and decodes the intercepted information according to the DCI information sent by the previous Relay.
  • Step 207 After correctly decoding the eNB, the eNB feeds back the correctly received response information ACK to the Relay, and the UE decodes an error, and feeds back the error response NAK to the Relay.
  • Step 208 The eNB sends the correctly decoded network coded data a ® b to the local existing one.
  • Relay's downlink data a is the binary domain XOR "Ten 60" to get the UE's uplink data b.
  • Step 209 After receiving the ACK of the eNB, the relay deletes the uplink data b of the UE in the buffer area. After receiving the response information NAK of the UE correctly, the relay reserves the downlink data a of the eNB in the buffer area.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the third embodiment of the present invention proposes a method for performing network coding in the relay.
  • the method includes the following steps: Step 301: In the system, the eNB and the UE exchange data with each other through the Relay.
  • the relay node receives the downlink data a from the eNB in the downlink backhaul subframe; the relay node receives the uplink data b from the UE in the uplink non-backhaul subframe.
  • the lengths of the data a, b are equal.
  • Step 302 The Relay demodulates and decodes the received data, and saves the decoded bit-level data in the relay buffer area. Relay performs binary domain XOR network coding on data a, b, and obtains bit-level data "10.
  • Step 303 The eNB determines the uplink transmission mode of the relay according to the channel condition fed back by the relay, and sends the DCI information, such as the uplink resource allocation and the modulation and coding mode, of the backhaul link carrying the relay to the eNB to the relay.
  • the DCI information such as the uplink resource allocation and the modulation and coding mode
  • Step 304 The Relay forwards the DCI information sent by the eNB to the UE.
  • Step 305 The Relay sends the network coded data a @b to the eNB according to the DCI information sent by the eNB.
  • Step 306 In the uplink backhaul subframe of the relay, the eNB receives the information uploaded by the relay and performs demodulation and decoding. At the same time, the UE also listens to the information sent by the Relay to the eNB, and demodulates and decodes the intercepted information according to the DCI information sent by the previous Relay.
  • Step 307 The eNB decodes an error, and feeds back the acknowledgment response message NAK to the Relay. After the UE decodes correctly, it sends back the correctly received response message ACK to the Relay.
  • Step 308 The UE obtains the downlink data a of the eNB by performing the XOR of the binary domain of the correctly decoded network coded data a and the existing uplink data b sent to the relay.
  • Step 309 After receiving the response information NAK of the eNB correctly, the relay reserves in the buffer area.
  • the Relay After receiving the ACK of the response message from the UE, the Relay deletes the downlink data a of the eNB in the buffer.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the fourth embodiment of the present invention proposes a method for performing network coding at the relay, as shown in FIG. 8, which includes the following steps:
  • Step 401 In the system, the eNB and the UE exchange data with each other through the Relay.
  • the relay node receives the downlink data a from the eNB in the downlink backhaul subframe; the relay node is non-backhaul on the uplink
  • the subframe receives uplink data b from the UE.
  • the lengths of the data a, b are equal.
  • Step 402 The Relay demodulates and decodes the received data, and saves the decoded bit-level data in the relay buffer area. Relay performs binary domain XOR network coding on data a, b to obtain bit level data @6.
  • Step 403 The eNB determines the uplink transmission mode of the relay according to the channel condition fed back by the relay, and sends the DCI information, such as the uplink resource allocation of the backhaul link carrying the relay to the eNB, and the modulation and coding mode to the relay.
  • the DCI information such as the uplink resource allocation of the backhaul link carrying the relay to the eNB, and the modulation and coding mode to the relay.
  • Step 404 The Relay forwards the DCI information sent by the eNB to the UE.
  • Step 405 The Relay sends the network coded data a ® b to the eNB according to the DCI information sent by the eNB.
  • Step 406 In the uplink backhaul subframe of the relay, the eNB receives the information uploaded by the relay and performs demodulation and decoding. At the same time, the UE also listens to the information sent by the Relay to the eNB, and demodulates and decodes the intercepted information according to the DCI information sent by the previous Relay.
  • Step 407 The eNB decodes an error, and feeds back the acknowledgment response message NAK to the relay, and the UE decodes an error, and feeds back the acknowledgment response message NAK to the relay.
  • Step 408 After receiving the response information NAK of the eNB, the relay reserves the uplink data b of the UE in the buffer area. After receiving the response information NAK of the UE correctly, the Relay reserves the downlink data a of the eNB in the buffer area.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • Embodiment 5 of the present invention proposes a method for performing network coding at a relay, as shown in FIG. 9, which includes the following steps:
  • Step 501 In the system, the eNB and the UE exchange data with each other through the relay.
  • the relay node receives downlink data a from the eNB in the downlink backhaul subframe; the relay node receives the uplink data b from the UE in the uplink non-backhaul subframe.
  • the length of the data a is greater than the length of the data b.
  • Step 502 The Relay demodulates and decodes the received data, and saves the decoded bit-level data in a buffer of the Relay. Since the length of the data a of the eNB is greater than the length of the data b of the UE, the Relay needs to use the previously agreed known sequence (for example, an all-zero sequence) for the data b. The padding is performed such that the padded data is equal in length to the data a.
  • a padding method is: connecting the known sequence to the end of the data b, as shown in FIG. 10, where n is a previously known known sequence. Relay performs binary domain XOR network coding on data a, 6' to obtain bit level data hexa.
  • Step 503 The eNB determines the uplink transmission mode of the relay according to the channel condition fed back by the relay, and sends the DCI information, such as the uplink resource allocation and the modulation and coding mode, of the backhaul link carrying the relay to the eNB to the relay.
  • the DCI information such as the uplink resource allocation and the modulation and coding mode
  • Step 504 The Relay forwards the DCI information sent by the eNB to the UE.
  • Step 505 The Relay sends the network coded data a ® b to the eNB according to the DCI information sent by the eNB.
  • Step 506 In the uplink backhaul subframe of the relay, the eNB receives the information uploaded by the relay and performs demodulation and decoding. At the same time, the UE also listens to the information sent by the Relay to the eNB, and demodulates and decodes the intercepted information according to the DCI information sent by the previous Relay.
  • Step 507 After correctly decoding the eNB, the eNB feeds back the correctly received response information ACK to the Relay, and after correctly decoding the UE, the UE sends back the correctly received response information ACK to the Relay.
  • Step 508 The eNB will correctly decode the obtained network coded data. Ten ⁇ 'and local issued
  • the downlink data of Relay a is the exclusive-OR of the binary domain. Ten "Get the padded data 6', and cut off the known sequence from the 6' tail to get the UE uplink data b o
  • Step 509 the UE fills the data b with a known sequence agreed in advance, the known sequence is connected to the end of the data b, and the padded data is obtained, and then the correctly decoded network coded data ⁇ 10 and the padded data 6 are obtained. 'Double-OR of the binary domain ⁇ is obtained as the downlink data a of the eNB.
  • Step 510 After receiving the ACK of the eNB, the relay deletes the uplink data b of the UE in the buffer area. After receiving the ACK of the response message from the UE, the Relay deletes the downlink data a of the eNB in the buffer.
  • Embodiment 6 of the present invention proposes a method for performing network coding at a relay, as shown in FIG. 11, which includes the following steps:
  • Step 601 In the system, the eNB and the UE exchange data with each other through the Relay.
  • Relay node The downlink data a from the eNB is received in the downlink backhaul subframe; the relay node receives the uplink data b from the UE in the uplink non-backhaul subframe.
  • the length of the data a is smaller than the length of the data b.
  • Step 602 The Relay demodulates and decodes the received data, and saves the decoded bit-level data in the relay buffer area. Since the length of the data a of the eNB is smaller than the length of the data b of the UE, the Relay needs to fill the data a with a known sequence (for example, an all-zero sequence) agreed in advance, and the known sequence is connected to the end of the data a, so that the padding is completed.
  • the data is equal in length to the data b, as shown in Fig. 12, where n is a previously known known sequence.
  • Relay performs binary domain XOR network encoding on data ⁇ ', b, and obtains bit-level data " '® b.
  • Step 603 The eNB determines the uplink transmission mode of the relay according to the channel condition fed back by the relay, and sends the DCI information, such as the uplink resource allocation of the backhaul link of the relay to the eNB, and the modulation and coding mode to the relay.
  • the DCI information such as the uplink resource allocation of the backhaul link of the relay to the eNB, and the modulation and coding mode to the relay.
  • Step 604 The Relay forwards the DCI information sent by the eNB to the UE.
  • Step 605 The relay sends the network coded data a, ® b to the eNB according to the DCI information sent by the eNB.
  • Step 606 In the uplink backhaul subframe of the relay, the eNB receives the information uploaded by the relay and performs demodulation and decoding. At the same time, the UE also listens to the information sent by the Relay to the eNB, and demodulates and decodes the intercepted information according to the DCI information sent by the previous Relay.
  • Step 607 After correctly decoding the eNB, the eNB feeds back the correctly received response information ACK to the Relay, and after correctly decoding the UE, the UE sends back the correctly received response information ACK to the Relay.
  • Step 608 the eNB fills the data a with a known sequence agreed in advance, the known sequence is connected to the end of the data a, the padded data ⁇ ' is obtained, and then the correctly decoded network coded data a'® b and padding are obtained. After the data a 'does the binary domain of the exclusive OR ''6'', the number of UEs is obtained.
  • Step 609 The UE performs the XOR of the binary domain of the correctly decoded network coded data and the existing uplink data b sent to the Relay, and obtains the padded data, and truncates the known sequence from the tail.
  • the eNB downlink data a is obtained.
  • Step 610 After receiving the ACK message of the eNB, the relay deletes the uplink data b of the UE in the buffer area. After receiving the acknowledgement ACK of the UE correctly, the Relay deletes the downlink data a of the eNB in the buffer area.
  • Example 7 After receiving the ACK message of the eNB, the relay deletes the uplink data b of the UE in the buffer area. After receiving the acknowledgement ACK of the UE correctly, the Relay deletes the downlink data a of the eNB in the buffer area.
  • the seventh embodiment of the present invention proposes a method for performing network coding at the relay, as shown in FIG. 13, which includes the following steps:
  • Step 701 In the system, the eNB and the UE1 and the UE2 exchange data with each other through the Relay.
  • Relay node downlink backhaul subframe receiving the downlink data from the eNB comprising a and a 2 in two parts, a is an eNB to be sent to the data for the UE1, a 2 is an eNB to send data destined for UE2;
  • Relay node of uplink backhaul sub The frame receives uplink data from UE1, UE2, b 2 .
  • the length of the data ai is greater than the data ⁇ , and the length of the data 3 ⁇ 4 is smaller than the data b 2 .
  • Step 702 The Relay demodulates and decodes the received data, and saves the decoded bit-level data in a buffer of the Relay.
  • Relay needs to process the obtained bit-level data first to ensure smooth network coding, as shown in Figure 14. Since the length of the data ai of the eNB is greater than the data bi of the UE1, the Relay first concatenates the previously agreed known sequence (for example, the all-zero sequence) in the tail of the data bi, so that the padded data ⁇ ' is equal in length to the data 1 .
  • the Relay Since the length of the data a 2 of the eNB is smaller than the data b 2 of the UE 2 , the Relay first concatenates the previously known known sequence n 2 (for example, the all-zero sequence) in the data tail, so that the padded data 'and the data b 2 The length is equal.
  • Relay combines the data ai , 'serial (ie, 'connected to the tail) to get the data string a, and concatenates the data V, b 2 (ie, b 2 is connected to the tail of V) to obtain the data string b.
  • Relay performs binary domain XOR network encoding processing on data a, b, and obtains bit-level data, which can be divided into ten parts and four parts.
  • Step 703 The eNB determines the uplink transmission mode of the relay according to the channel condition fed back by the relay, and sends the DCI information, such as the uplink resource allocation and the modulation and coding mode of the backhaul link carrying the relay to the eNB, to the relay.
  • Step 704 The Relay forwards the DCI information sent by the eNB to UE1 and UE2.
  • Step 705 The relay sends network coded data to the eNB according to the DCI information sent by the eNB, where the network coded data includes a frame header portion, and the frame header portion includes the following information: (1) The data size of the data portion corresponding to the UE1 c3 ⁇ 4 ⁇ b ' And a, @V corresponds to the position in the data 4 ⁇ ; (2) the data size of the data portion ⁇ 2 ' ⁇ b 2 corresponding to UE2 and the position corresponding to ⁇ 3 ⁇ 4 ' ⁇ b 2 in the data "10. Behind the frame header, the string follows the data "ten.” The header portion and the string followed by the data ten), which together form the network encoded data.
  • Step 706 In the uplink backhaul subframe of the relay, the eNB receives the network coded data information uploaded by the relay and performs demodulation and decoding. At the same time, the UE also listens to the network coded data information sent by the relay to the eNB, and demodulates the intercepted information according to the DCI information sent by the previous relay.
  • Step 707 After correctly decoding the eNB, the eNB feeds back the correctly received response information ACK to the Relay, and after correctly decoding the UE, the UE sends back the correctly received response information ACK to the Relay.
  • the decoding process of the eNB is as shown in FIG.
  • the eNB correctly decodes the network coded data, and the eNB first obtains the following information from the frame header portion of the network coded data: (1) the data size of the data portion corresponding to UE1 and the corresponding value of A10 V in the data ⁇ 6 Position; (2) The data size of the data part ⁇ 2 ' ⁇ 3 ⁇ 4 corresponding to UE2 and the corresponding position of 2 ' ⁇ b 2 in the data "1.
  • the eNB sends the data a, @ V and the local existing to the Relay.
  • the downlink data is used as the binary domain XOR.
  • the padded data V is obtained, and the known sequence ⁇ is truncated from the tail to obtain the UE1 uplink data b lo eNB uses the known sequence n 2 to locally generate the data.
  • the downlink data of the Relay is filled, the known sequence is connected to the end of the data, and the padded data 2 ' is obtained, and then the data ⁇ 2 '10 and the ⁇ 2 ' are binary fields XOR 'Ten' to obtain the UE2 Upstream data b 2 .
  • the UE1 decoding process is as shown in FIG. 16.
  • UE1 correctly decodes the network coded data, and UE1 first obtains the following information from the frame header portion of the network coded data: (1) The data size corresponding to the data portion of UE1 and the corresponding value of A10 V in $a®b Position; (2) The data size of the data portion ⁇ 2 ' ⁇ 3 ⁇ 4 corresponding to UE2 and the corresponding position of 2 ' ⁇ b 2 in the data 1 ⁇ ).
  • UE1 fills the existing uplink data that has been sent to the Relay with a known sequence, and the known sequence is connected to the data tail to obtain the filled data V, and then the data ® V and the binary domain are X or a.
  • ®b x ' ⁇ , 'Get the downlink data of the eNB a l D UE1 decoding process is shown in FIG.
  • UE2 correctly decodes the network coded data, and UE2 first learns the following information from the frame header part of the network coded data: (1) The data size of the data part @ ⁇ ' corresponding to UE1 and the A10 V The corresponding position in $ a®b; ( 2 ) the data size of the data portion 2 ' ⁇ 3 ⁇ 4 corresponding to UE2 and the corresponding position of ⁇ ' ⁇ b 2 in the data ⁇ ⁇ .
  • the UE2 obtains the padded data ⁇ 2 ' from the data ⁇ 2 ' ⁇ b 2 and the existing existing uplink data b 2 sent to the relay into the binary domain ' ⁇ ⁇ b 2 , and then cuts from the ⁇ 2 ' tail After the known sequence ⁇ 2 is obtained, the downlink data a 2 sent by the eNB to the UE 2 is obtained .
  • Step 708 After receiving the ACK of the eNB, the relay deletes the uplink data b of the UE in the buffer area. After receiving the ACK of the response message from the UE, the Relay deletes the downlink data a of the eNB in the buffer.
  • Embodiment 8 of the present invention proposes a method for performing network coding at a relay, which includes the following steps:
  • Step 801 In the system, the eNB and the UE exchange data with each other through the relay.
  • the relay node receives downlink data from the eNB in a downlink backhaul subframe; the relay node receives uplink data from the UE in an uplink non-backhaul subframe.
  • Step 802 The Relay demodulates and decodes the received data, and saves the decoded bit-level data in the Relay buffer area.
  • the Relay will send the data obtained after the network coding process to the eNB in the uplink backhaul subframe. It is assumed that an uplink backhaul subframe corresponds to time n, and the previous uplink backhaul subframe corresponds to time n-k.
  • the relay selects data from the uplink data of the UE received from the time n-k+1 to the time n and the downlink data from the eNB to perform network coding operation.
  • Relay selects the uplink data a from the UE received at time n-k+1 to time n and the downlink data b from the eNB (the lengths of data a and b are equal).
  • Relay performs binary domain XOR network coding on data a, b to obtain bit level data ⁇ ⁇
  • Step 803 The eNB determines the uplink transmission mode of the relay according to the channel condition fed back by the relay, and sends the DCI information of the uplink resource allocation, modulation and coding mode, etc. of the backhaul link carrying the Relay to the eNB to the Relay.
  • Step 804 The Relay forwards the DCI information sent by the eNB to the UE.
  • Step 805 The Relay sends the network coded data a @b to the eNB according to the DCI information sent by the eNB.
  • Step 806 At the uplink backhaul subframe corresponding to the time n, the eNB receives the information uploaded by the relay and performs demodulation and decoding. At the same time, the UE also listens to the information sent by the relay to the eNB, and demodulates and decodes the monitored information according to the DCI information sent by the previous relay.
  • Step 807 After correctly decoding the eNB, the eNB feeds back the correctly received response information ACK to the Relay, and after correctly decoding the UE, it feeds back to the Relay the correctly received response message ACK.
  • Step 808 The eNB obtains the uplink data b of the UE by using the correctly decoded network coded data a ® b and the existing downlink data sent to the relay a to perform a binary domain exclusive OR "ten 60".
  • the UE will correctly decode the obtained network coded data a. 6 and the existing uplink data b sent to the relay as the binary domain XOR ⁇ ⁇ ⁇ to obtain the eNB's lower data "a".
  • Step 809 After receiving the ACK of the eNB, the relay deletes the uplink data b of the UE in the buffer area. After receiving the ACK of the response message from the UE, the Relay deletes the downlink data a of the eNB in the buffer.
  • the embodiment of the present invention further provides an intermediate node, as shown in FIG. 18, including: a first receiving unit, a first sending unit, where:
  • the first receiving unit is configured to receive uplink transmission scheduling information of an uplink between the intermediate node and the base station from a base station;
  • the first sending unit is configured to send the uplink transmission scheduling information to one or more terminals.
  • the intermediate node is: a relay node, a micro base station, a home base station, or a terminal having a data forwarding function.
  • the intermediate node further includes: a data processing unit, the first receiving unit further configured to receive downlink data from the base station and from the one or more terminals Uplink data;
  • the data processing unit is configured to perform network coding on the downlink data and the uplink data to obtain network coded data.
  • the uplink data is data that is sent by the terminal to the intermediate node between two consecutive uplink backhaul subframes.
  • the data amount of the downlink data and the data amount of the uplink data are the same or different.
  • the data processing unit performs network coding on the downlink data and the uplink data to obtain network coded data, including:
  • the downlink data and/or the uplink data are padded using a predetermined sequence that is agreed in advance, so that the processed uplink data is processed.
  • the amount of data and the amount of downlink data are the same, and the processed uplink data and downlink data are network coded to obtain the network coded data.
  • the data processing unit uses the pre-agreed known sequence to compare the downlink data and/or when the data amount of the downlink data and the data amount of the uplink data are different.
  • the padding of the uplink data includes:
  • the downlink data includes the data ai corresponding to the terminal UEi
  • the bi is padded using a pre-agreed known sequence to obtain bi' such that the bi's and the ai have the same amount of data;
  • the ai is padded using a pre-agreed known sequence to obtain ai' such that the data amount of the ai' and the bi are the same.
  • the network coding The data includes: a data size of the network coded data corresponding to each terminal of the plurality of terminals, and an indication information of a location of the network coded data corresponding to each terminal, and network coded data corresponding to the multiple terminals.
  • the first sending unit is further configured to: according to the The uplink transmission scheduling information transmits the network coded data to the base station.
  • the embodiment of the present invention further provides a terminal, as shown in FIG. 19, including:
  • the second receiving unit, the social masturbation obtains uplink transmission scheduling information of the uplink of the intermediate node to the base station from the intermediate node.
  • the terminal further includes: a monitoring unit, configured to monitor network coded data sent by the intermediate node to the base station according to the uplink transmission scheduling information, where the network The encoded data is obtained by the intermediate node according to downlink data sent by the base station and uplink data sent by at least the terminal to the intermediate node.
  • a monitoring unit configured to monitor network coded data sent by the intermediate node to the base station according to the uplink transmission scheduling information, where the network The encoded data is obtained by the intermediate node according to downlink data sent by the base station and uplink data sent by at least the terminal to the intermediate node.
  • the intercepting unit according to the uplink transmission scheduling information, listening to the network coded data sent by the intermediate node to the base station, includes:
  • the intercepting unit monitors network coded data sent by the intermediate node to the base station on an uplink backhaul subframe of the intermediate node.
  • the intermediate node performs linear or non-linear processing on the information received on different channels, and then sends the processed information to the receiving node, which can further compress the network information stream, thereby saving transmission resources and utilizing efficiently.
  • Time-frequency resources improve system throughput.
  • the terminal can obtain the downlink data of the base station to the terminal by monitoring the network coded data sent by the intermediate node on the uplink backhaul subframe, and the data does not need to be transmitted through the intermediate node to the terminal, thereby saving time and frequency resources. .

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Abstract

本发明实施例提供一种信息传输方法，包括：中间节点从基站接收所述中间节点到所述基站之间上行链路的上行传输调度信息，并将所述上行传输调度信息发送给一个或多个终端。本发明实施例还提供一种信息传输方法，终端从中间节点处获得所述中间节点到基站的上行链路的上行传输调度信息。本发明实施例还提供一种终端和中间节点。本发明实施例可以节省传输资源，高效地利用时频资源，提高系统吞吐量。

Description

一种信息传输方法、 中间节点和终端
技术领域
本发明涉及无线通信领域， 尤其涉及一种在信息传输方法、 中间节点和 终端。 背景技术
在无线通信网络中， 当用户终端 （ User Equipment, 简称 UE ) 处于网络 边缘时， UE直接与基站（ evolved Node B， 简称 eNB )进行通信的效果不佳。 此时可以使用中继（ Relay )节点来辅助通信， 即 UE和 eNB先将各自要交换 的信息发送到 Relay节点， Relay节点对信息进行放大转发或译码转发到 eNB 和 UE。通过在 eNB和 UE间增加 Relay节点，将 eNB和 UE之间的一条质量 较差的链路替换为 eNB与 Relay节点之间以及 Relay节点与 UE之间的两条 质量较好的链路， 从而保证 eNB对自身覆盖范围内的 UE提供业务的质量， 以及保证系统的容量和数据接入速率。与 Relay节点建立了服务关系的 UE称 为 Relay UE。
在不包含 Relay节点的无线通信网絡中， 只存在 eNB和 UE之间的直连 ( direct )链路。 在无线通信网络中加入 Relay节点后， 增加了两类无线链路： eNB和 Relay节点之间的回传 （ backhaul )链路和 Relay节点和 UE之间的接 入 ( access )链路。
由于技术的限制， 相关的 Relay 节点还不能实现全双工通信， 即 Relay 节点无法在同一频率资源、 同一时间资源上实现数据发送和数据接收两种功 能。 例如， Relay在某一频率资源接收 eNB发送的数据， 则在同一时刻 Relay 不能够在此频率资源上向 UE发送数据， 反之亦然。 也就是说， 下行 backhaul 链路的数据传输要与下行 access链路的数据传输在时频资源上分隔开来； 上 行 backhaul链路的数据传输要与上行 access链路的数据传输在时频资源上分 隔开来。 按照 H前的 LTE无线通信系统的标准要求， 下行 backhaul链路的数 据传输只在一个无线帧中的某几个特定子帧进行， 这些特定子帧被称为下行 backhaul子帧； 上行 backhaul链路的数据传输只在一个无线帧中的某几个特 定子帧进行， 这些特定子帧被称为上行 backhaul子帧。
由于 Relay节点无法在同一频率资源、 同一时间资源上实现数据发送和 数据接收两种功能， 时频资源利用率较低。
网络编码（ Network Coding )的核心思想是网络中的中间节点对各条信道 上收到的数据进行线性或者非线性的处理， 这些处理技术可能为二元域异或 网络编码、 多元域网络编码、 嵌套网络编码等。 从各条信道上收到的数据可 称为源数据， 网络编码处理后得到的数据可称为网络编码数据。 二元域异或 网络编码， 是将两路源数据进行二元域的异或处理得到网络编码数据， 然后 将网络编码数据发送给接收节点， 接收节点只需知道一路源数据和网络编码 数据，就可以利用这两个数据进行联合解码（两个信息进行二元域异或运算）， 获得另一路源数据， 该编解码技术简单， 易于实现。 发明内容
本发明实施例的目的在于提供一种信息传输方法、 中间节点和终端， 提 高时频资源利用率和系统吞吐率。
为了解决上述问题， 本发明实施例提供了一种信息传输方法， 包括： 中间节点从基站接收所述中间节点到所述基站之间上行链路的上行传输 调度信息， 并将所述上行传输调度信息发送给一个或多个终端。
上述方法还可具有以下特点， 所述中间节点为： 中继节点、 微基站、 家 庭基站或者具有数据转发功能的终端。
上述方法还可具有以下特点， 所述中间节点接收来自所述基站的下行数 据和来自所述一个或多个终端的上行数据， 将所述下行数据和所述上行数据 进行网络编码得到网络编码数据。
上述方法还可具有以下特点 , 所述上行数据为两个连续的上行回传子帧 之间所述终端发送给所述中间节点的数据。
上述方法还可具有以下特点， 所述下行数据的数据量和所述上行数据的 数据量相同或不同。
上述方法还可具有以下特点， 所述将所述下行数据和上行数据进行网络 编码得到网络编码数据包括：
当所述下行数据的数据量和所述上行数据的数据量不同时， 使用预先约 定的已知序列对所述下行数据和 /或所述上行数据进行填充处理， 使得处理后 的上行数据的数据量和下行数据的数据量相同， 将处理后的上行数据和下行 数据进行网络编码得到所述网络编码数据。
上述方法还可具有以下特点 , 当所述下行数据的数据量和所述上行数据 的数据量不同时， 使用预先约定的已知序列对所述下行数据和 /或所述上行数 据进行填充包括：
当所述下行数据中包括终端 UEi对应的数据 ai， 所述上行数据中包括终 端 UEi发送的数据 bi时， i = l ...k, k大于等于 1 , 进行如下填充处理： 当所述 ai的数据量大于所述 bi的数据量时，使用预先约定的已知序列对 所述 bi进行填充得到 bi' , 使得所述 bi'与所述 ai的数据量相同；
或者， 当所述 ai的数据量小于所述 bi的数据量时， 使用预先约定的已知 序列对所述 ai进行填充得到 ai'， 使得所述 ai'与所述 bi的数据量相同。
上述方法还可具有以下特点， 当所述上行数据为多个终端的上行数据， 所述下行数据为所述基站通过中间节点发送给多个终端的下行数据时， 所述 网络编码数据中包括： 所述多个终端中每个终端对应的网络编码数据的数据 量大小、 每个终端对应的网络编码数据所在位置的指示信息， 所述多个终端 对应的网络编码数据。
上述方法还可具有以下特点， 所述中间节点根据所述上行传输调度信息 将所述网络编码数据发送给所述基站。
本发明实施例还提供一种信息传输方法， 包括：
终端从中间节点处获得所述中间节点到基站的上行链路的上行传输调度 信息。
上述方法还可具有以下特点， 所述中间节点为： 中继节点、 微基站、 家 庭基站或者具有数据转发功能的终端。
上述方法还可具有以下特点， 所述终端根据所述上行传输调度信息监听 所述中间节点发送给所述基站的网絡编码数据， 其中， 所述网络编码数据为 所述中间节点根据所述基站发送的下行数据和至少所述终端发送给所述中间 节点的上行数据进行网络编码得到。
上述方法还可具有以下特点， 所述终端根据所述上行传输调度信息监听 所述中间节点发送给基站的网络编码数据包括：
所述终端在所述中间节点的上行回传子帧上监听所述中间节点发送给基 站的网络编码数据。
本发明实施例还提供一种中间节点， 所述中间节点包括： 第一接收单元， 第一发送单元， 其中：
所述第一接收单元设置为， 从基站接收所述中间节点到所述基站之间上 行链路的上行传输调度信息；
所述第一发送单元设置为， 将所述上行传输调度信息发送给一个或多个 终端。
上述中间节点还可具有以下特点， 所述中间节点为： 中继节点、 微基站、 家庭基站或者具有数据转发功能的终端。
上述中间节点还可具有以下特点， 所述中间节点还包括： 数据处理单元； 所述第一接收单元还设置为， 接收来自所述基站的下行数据和来自所述 一个或多个终端的上行数据；
所述数据处理单元设置为， 将所述下行数据和所述上行数据进行网络编 码得到网络编码数据。
上述中间节点还可具有以下特点， 所述上行数据为两个连续的上行回传 子帧之间所述终端发送给所述中间节点的数据。
上述中间节点还可具有以下特点， 所述下行数据的数据量和所述上行数 据的数据量相同或不同。
上述中间节点还可具有以下特点， 所述数据处理单元将所述下行数据和 上行数据进行网络编码得到网络编码数据包括：
当所述下行数据的数据量和所述上行数据的数据量不同时， 使用预先约 定的已知序列对所述下行数据和 /或所述上行数据进行填充处理， 使得处理后 的上行数据的数据量和下行数据的数据量相同， 将处理后的上行数据和下行 数据进行网絡编码得到所述网络编码数据。
上述中间节点还可具有以下特点， 所述数据处理单元当所述下行数据的 数据量和所述上行数据的数据量不同时， 使用预先约定的已知序列对所述下 行数据和 /或所述上行数据进行填充包括：
当所述下行数据中包括终端 UEi对应的数据 ai , 所述上行数据中包括终 端 UEi发送的数据 bi时， i = l ...k, k大于等于 1 , 进行如下填充处理： 当所述 ai的数据量大于所述 bi的数据量时，使用预先约定的已知序列对 所述 bi进行填充得到 bi'， 使得所述 bi'与所述 ai的数据量相同；
或者， 当所述 ai的数据量小于所述 bi的数据量时， 使用预先约定的已知 序列对所述 ai进行填充得到 ai' , 使得所述 ai'与所述 bi的数据量相同。
上述中间节点还可具有以下特点， 当所述上行数据为多个终端的上行数 据， 所述下行数据为所述基站通过中间节点发送给多个终端的下行数据时， 所述网络编码数据中包括： 所述多个终端中每个终端对应的网络编码数据的 数据量大小、 每个终端对应的网络编码数据所在的位置的指示信息， 所述多 个终端对应的网络编码数据。
上述中间节点还可具有以下特点， 所述第一发送单元还设置为： 根据所 述上行传输调度信息将所述网络编码数据发送给所述基站。
本发明实施例还提供一种终端， 包括：
第二接收单元， 设置为从中间节点处获得所述中间节点到基站的上行链 路的上行传输调度信息。
上述终端还可具有以下特点， 所述终端还包括：
监听单元， 设置为根据所述上行传输调度信息监听所述中间节点发送给 所述基站的网络编码数据， 其中， 所述网络编码数据为所述中间节点根据所 述基站发送的下行数据和至少所述终端发送给所述中间节点的上行数据进行 网络编码得到。
上述终端还可具有以下特点， 所述监听单元根据所述上行传输调度信息 监听所述中间节点发送给基站的网络编码数据包括： 所述监听单元在所述中间节点的上行回传子帧上监听所述中间节点发送 给基站的网络编码数据。
本申请中， 中间节点对不同信道上收到的信息进行线性或者非线性的处 理， 然后再把处理后的信息发送给接收节点， 可以将网络信息流进一步压缩， 从而节省传输资源， 高效地利用时频资源， 提高系统吞吐量。 终端通过监听 中间节点在上行回传子帧上发送的网络编码数据， 能获得基站到终端的下行 数据， 这部分数据就不需要再通过中间节点到终端的下行资源传输， 从而节 省了时频资源。 附图概述
图 1是在 Relay节点处进行网络编码的方法流程图；
图 2是 Relay进行网络编码的方法流程图；
图 3是 e B参与网络编码的方法流程图；
图 4是 Relay UE参与网络编码的方法流程图；
图 5是实施例一的流程示意图；
图 6是实施例二的流程示意图；
图 7是实施例三的流程示意图；
图 8是实施例四的流程示意图；
图 9是实施例五的流程示意图；
图 10是实施例五中 Relay对来自 UE的数据进行网络编码预处理的示意 图；
图 11是实施例六的流程示意图；
图 12是实施例六中 Relay对来自 eNB的数据进行网络编码预处理的示意 图；
图 13是实施例七的流程示意图；
图 14是实施例七中 Relay对来自 eNB和 UE1 , UE2的数据进行网络编 码预处理的示意图； 图 15是实施例七中 e B的解码过程示意图；
图 16是实施例七中 UE1的解码过程示意图；
图 17是实施例七中 UE2的解码过程示意图；
图 18是本发明实施例中间节点框图；
图 19是本发明实施例终端框图。 本发明的较佳实施方式
下文中将结合附图对本发明的实施例进行详细说明。在不冲突的情况下， 本申请中的实施例及实施例中的特征可以相互任意组合。
另外， 虽然在流程图中示出了逻辑顺序， 但是在某些情况下， 可以以不 同于此处的顺序执行所示出或描述的步骤。
网络编码 （ Network Coding, 简称 NC )技术， 在网络的 Relay节点对不 同信道上收到的信息进行线性或者非线性的处理， 然后再把处理后的信息发 送给接收节点， 可以将网络信息流进一步压缩以达到节省传输资源， 提高网 絡的吞吐量的目的。
在 eNB和 Relay UE通过 Relay节点辅助进行信息交换时， Relay节点使 用网络编码技术对 eNB和 UE的信息进行处理可以有效节省系统的时频资源， 本发明实施例提出了一种在无线通信网络中使用网络编码的方法， 可以更高 效地利用时频资源， 提高系统吞吐量。
本发明实施例提供一种信息传输方法， 包括：
中间节点从基站接收所述中间节点到所述基站之间上行链路的上行传输 调度信息， 并将所述上行传输调度信息发送给一个或多个终端。
在本实施例的一种备选方案中， 所述中间节点包括但不限于： 中继节点、 微基站、 家庭基站或者具有数据转发功能的终端。 比如 Pico, Femto 等类型 的基站。
在本实施例的一种备选方案中， 还包括： 所述中间节点接收来自所述基 站的下行数据和来自所述一个或多个终端的上行数据， 将所述下行数据和所 述上行数据进行网络编码得到网络编码数据。 所述网络编码可以是二元域异 或网络编码、 多元域网络编码、 嵌套网络编码等， 本申请对此不作限定。
在本实施例的一种备选方案中， 所述上行数据为两个连续的上行回传子 帧之间所述终端发送给所述中间节点的数据。
在本实施例的一种备选方案中， 所述上行数据为一个或多个终端的上行 数据； 所述下行数据为所述基站通过中间节点发送给一个或多个终端的下行 数据。
在本实施例的一种备选方案中， 所述下行数据的数据量和所述上行数据 的数据量相同或不同。
在本实施例的一种备选方案中， 所述将所述下行数据和上行数据进行网 络编码得到网络编码数据包括：
当所述下行数据的数据量和所述上行数据的数据量不同时， 使用预先约 定的已知序列对所述下行数据和 /或所述上行数据进行填充， 使得填充后的上 行数据的数据量和下行数据的数据量相同， 将填充后的上行数据和下行数据 进行网络编码得到所述网络编码数据。
填充方式包括多种情况：
1 ) 上行数据和下行数据仅为一个终端的上行数据和下行数据， 则： a) 当来自终端的上行数据的数据量小于来自基站的下行数据的数据量 时， 中间节点先对来自终端的上行数据使用预先约定的已知序列进行填充， 使得填充后上行数据的数据量与来自基站的下行数据的数据量相等， 然后再 将填充后的上行数据和下行数据进行网络编码。
b) 当来自基站的下行数据的数据量量小于来自终端的上行数据的数据 量时，中间节点先对来自基站的下行数据使用预先约定的已知序列进行填充， 使得填充后的下行数据的数据量与来自终端的上行数据的数据量相等， 然后 再将上行数据和填充后的下行数据进行网络编码。
2 ) 上行数据和下行数据为多个终端的上行数据和下行数据， 则： 下行数据中包括终端 UEi对应的数据 ai， 上行数据中包括终端 UEi发送 的数据 bi时， i = l ...k， k大于等于 1 , 进行如下填充处理： 当所述 ai的数据量大于所述 bi的数据量时，使用预先约定的已知序列对 所述 bi进行填充得到 bi' , 使得所述 bi'与所述 ai的数据量相同；
或者， 当所述 ai的数据量小于所述 bi的数据量时， 使用预先约定的已知 序列对所述 ai进行填充得到 ai' , 使得所述 ai'与所述 bi的数据量相同。
对 ai和 bi处理之后， 将各终端处理后的上行数据进行串接， 将基站发送 给各终端的处理后的下行数据进行串接， 然后将串接后的数据进行网络编码 处理。
当然， 如果 ai的数据量等于 bi的数据量， 则不需要进行填充处理。
在本实施例的一种备选方案中， 上述已知序列可以是全零序列， 也可以 是其它序列， 比如全 1序列， 收发两端约定好即可， 本申请对此不作限定。 填充位置可以是填充到上行数据或下行数据的尾部， 也可以是收发两端事先 约定好的任意位置， 比如头部， 本申请对此不作限定。
在本实施例的一种备选方案中， 所述下行数据为所述基站通过中间节点 发送给多个终端的下行数据时， 所述网络编码数据中包括： 所述多个终端中 每个终端对应的网络编码数据的数据量大小、 每个终端对应的网络编码数据 所在的位置的指示信息， 所述多个终端对应的网络编码数据。 所述多个终端 中每个终端对应的网络编码数据的数据量大小以及每个终端对应的网络编码 数据所在位置的指示信息通常位于帧头部分。
在本实施例的一种备选方案中， 所述方法还包括： 所述中间节点根据所 述上行传输调度信息将所述网络编码数据发送给所述基站。
本发明实施例还提供一种信息传输方法， 包括：
基站将下行数据发送给中间节点； 以及， 将所述中间节点到所述基站之 间上行链路的上行传输调度信息发送给所述中间节点；
以及， 接收所述中间节点根据所述上行传输调度信息发送的网络编码数 据， 其中， 所述网络编码数据为所述中间节点根据所述下行数据和终端发送 给所述中间节点的上行数据进行网络编码得到。
在本实施例的一种备选方案中， 所述中间节点包括但不限于： 中继节点、 微基站、 家庭基站或者具有数据转发功能的终端。
在本实施例的一种备选方案中， 所述方法还包括： 所述基站根据所述下 行数据对所述网络编码数据进行解码， 得到所述终端的上行数据。
在本实施例的一种备选方案中， 所述基站根据所述下行数据对所述网络 编码数据进行解码， 得到所述终端的上行数据包括：
所述下行数据为一个终端的下行数据：
当所述下行数据的数据量小于所述上行数据的数据量， 所述基站使用预 先约定的已知序列对所述下行数据进行填充， 得到填充后的下行数据， 根据 所述填充后的下行数据对所述网络编码数据进行解码得到所述终端的上行数 据；
或者，
当所述下行数据的数据量大于所述上行数据的数据量， 所述基站根据所 述下行数据对所述网络编码数据进行解码得到填充后的上行数据， 从所述填 充后的上行数据中去除预先约定的已知序列， 获得所述终端的上行数据。
在本实施例的一种备选方案中， 所述基站根据所述下行数据对所述网络 编码数据进行解码， 得到所述终端的上行数据包括：
所述下行数据为多个终端 UEi的下行数据 ai, i = 1...m， m大于 1， 所述 上行数据为多个终端 UEi的下行数据 bi , 则：
所述基站从所述中间节点发送的网络编码数据中携带的所述 UEi的网络 编码数据的数据量大小以及所述 UEi的网絡编码数据所在位置获得所述 UEi 的网络编码数据， 当所述 UEi的下行数据 ai的数据量等于所述 UEi的上行数 据 bi的数据量，所述基站根据所述下行数据 ai对所述 UEi的网络编码数据进 行解码得到所述 UEi的上行数据 bi;
或者，
所述基站从所述中间节点发送的网络编码数据中携带的所述 UEi的网络 编码数据的数据量大小以及所述 UEi的网络编码数据所在位置获得所述 UEi 的网络编码数据， 当所述 UEi的下行数据 ai的数据量 d、于所述 UEi的上行数 据 bi的数据量，所述基站使用预先约定的已知序列对所述下行数据 ai进行填 充，得到填充后的下行数据 ai' ,根据下行数据 ai'对所述 UEi的网络编码数据 进行解码得到所述 UEi的上行数据 bi;
或者，
所述基站从所述中间节点发送的网络编码数据中携带的所述 UEi的网络 编码数据的数据量大小以及所述 UEi的网络编码数据所在位置获得所述 UEi 的网络编码数据， 当所述 UEi的下行数据 ai的数据量大于所述 UEi的上行数 据 bi的数据量，所述基站根据下行数据 ai对所述 UEi的网络编码数据进行解 码得到所述填充后的上行数据 bi' , 从所述 bi'中去除预先约定的已知序列， 获得所述 UEi的上行数据 bi„
本发明实施例还提供一种信息传输方法， 包括：
终端从中间节点处获得所述中间节点到基站的上行链路的上行传输调度 信息。
在本实施例的一种备选方案中， 所述中间节点包括但不限于： 中继节点、 微基站、 家庭基站或者具有数据转发功能的终端。
在本实施例的一种备选方案中， 还包括： 所述终端根据所述上行传输调 度信息监听所述中间节点发送给所述基站的网络编码数据， 其中， 所述网络 编码数据为所述中间节点根据所述基站发送的下行数据和至少所述终端发送 给所述中间节点的上行数据进行网络编码得到。
在本实施例的一种备选方案中， 所述终端根据所述上行传输调度信息监 听所述中间节点发送给基站的网络编码数据包括：
所述终端在所述中间节点的上行回传子帧上监听所述中间节点发送给基 站的网络编码数据。
在本实施例的一种备选方案中， 所述方法还包括：
所述终端根据本地的所述上行数据对监听到的所述中间节点发送给所述 基站的网络编码数据进行解码， 得到所述基站的下行数据。
在本实施例的一种备选方案中， 所述终端根据本地的所述上行数据对监 听到的所述中间节点发送给所述基站的网络编码数据进行解码， 得到所述基 站的下行数据包括：
当所述网络编码数据中仅包括所述终端的网络编码数据时 , 根据本地的 所述上行数据对所述终端的网络编码数据进行解码， 得到所述终端的下行数 据；
当所述网络编码数据中仅包括多个终端的网络编码数据时 , 所述终端从 所述中间节点发送给所述基站的网络编码数据中携带的所述终端的网络编码 数据的数据量大小以及所述终端的网络编码数据所在位置获得所述终端的网 络编码数据后， 根据本地的所述上行数据对所述终端的网络编码数据进行解 码， 得到所述基站的下行数据。
在本实施例的一种备选方案中， 所述根据本地的所述上行数据对所述终 端的网络编码数据进行解码 , 得到所述终端的下行数据包括：
当所述下行数据的数据量大于所述上行数据的数据量， 所述终端使用预 先约定的已知序列对所述上行数据进行填充， 得到填充后的上行数据， 根据 所述填充后的上行数据对所述终端的网络编码数据进行解码得到所述基站的 下行数据；
或者，
当所述下行数据的数据量小于所述上行数据的数据量， 所述终端根据所 述上行数据对所述终端的网络编码数据进行解码得到填充后的下行数据， 从 所述填充后的下行数据中去除预先约定的已知序列， 获得所述基站的下行数 据。
下面通过一些实施例来描述本发明所述的方法。 下述实施例中， 以中间 节点为 Relay节点为例进行说明， 但本申请不限于此。 下述各实施例实现流 程可参考图 1 - 4。 其中， 图 1是 e B、 Relay和 UE的总体交互流程， 图 2 是 Relay处的实现流程， 图 3是 eNB处的实现流程， 图 4是 UE处的实现流 程。
实施例一 本发明的实施例一提出了一种在 Relay处进行网络编码的方法， 如图 5 所示， 包括以下步骤：
步骤 101 , 在系统中， eNB和 UE通过 Relay互相交换数据。 Relay节点 在下行 backhaul子帧接收来自 eNB的下行数据 a; Relay节点在上行非 backhaul 子帧接收来自 UE的上行数据 b。 数据 a， b的长度是相等的。
步骤 102 , Relay对接收到的数据进行解调译码， 并将译码得到的比特级 数据保存在 Relay的緩存区。 Relay对数据 a, b作二元域异或网络编码处理 , 得到比特级数据 6。
步骤 103， eNB根据 Relay反馈的信道条件决定 Relay的上行传输方式， 并将承载了 Relay到 eNB的 backhaul链路的上行资源分配、 调制编码方式等 的 DCI信息发送给 Relay。
步骤 104, Relay将 eNB发来的 DCI信息转发给 UE。
步骤 105， Relay根据 eNB发来的 DCI信息向 eNB发送网络编码数据 a @b。
步骤 106 , 在 Relay的上行 backhaul子帧， eNB接收 Relay上传的信息并 进行解调译码。同一时刻 UE也监听 Relay发往 eNB的信息，并根据此前 Relay 发来的 DCI信息对监听到的信息进行解调译码。
步骤 107， eNB正确译码后， 向 Relay反馈正确接收的应答信息 ACK， UE正确译码后， 向 Relay反馈正确接收的应答信息 ACK。
步骤 108, eNB将正确译码得到的网络编码数据 a ®b与本地已有的发给
Relay的下行数据 a作二元域的异或"㊉ 6㊉"得到 UE的上行数据 b。 UE将正 确译码得到的网络编码数据 a㊉ 6与本地已有的发给 Relay的上行数据 b作二 元 i或的异或 ㊉ δ®δ得到 eNB的下^ "数据 a。
步骤 109, Relay在正确收到 eNB的应答信息 ACK后， 将缓存区中 UE 的上行数据 b删除。 Relay在正确收到 UE的应答信息 ACK后， 将緩存区中 eNB的下行数据 a删除。
实施例二 本发明的实施例二提出了一种在 Relay处进行网络编码的方法， 如图 6 所示， 包括以下步骤：
步骤 201 , 在系统中， eNB和 UE通过 Relay互相交换数据。 Relay节点 在下行 backhaul子帧接收来自 eNB的下行数据 a; Relay节点在上行非 backhaul 子帧接收来自 UE的上行数据 b。 数据 a， b的长度是相等的。
步骤 202 , Relay对接收到的数据进行解调译码， 并将译码得到的比特级 数据保存在 Relay的緩存区。 Relay对数据 a, b作二元域异或网络编码处理 , 得到比特级数据 6。
步骤 203， eNB根据 Relay反馈的信道条件决定 Relay的上行传输方式， 并将承载了 Relay到 eNB的 backhaul链路的上行资源分配、 调制编码方式等 的 DCI信息发送给 Relay。
步骤 204, Relay将 eNB发来的 DCI信息转发给 UE。
步骤 205， Relay根据 eNB发来的 DCI信息向 eNB发送网络编码数据 a @b。
步骤 206, 在 Relay的上行 backhaul子帧， eNB接收 Relay上传的信息并 进行解调译码。同一时刻 UE也监听 Relay发往 eNB的信息，并根据此前 Relay 发来的 DCI信息对监听到的信息进行解调译码。
步骤 207， eNB正确译码后， 向 Relay反馈正确接收的应答信息 ACK， UE译码发生错误， 向 Relay反馈错误接收的应答信息 NAK。
步骤 208 , eNB将正确译码得到的网络编码数据 a ®b与本地已有的发给
Relay的下行数据 a作二元域的异或"㊉ 6㊉"得到 UE的上行数据 b。
步骤 209， Relay在正确收到 eNB的应答信息 ACK后， 将緩存区中 UE 的上行数据 b删除。 Relay在正确收到 UE的应答信息 NAK后， 保留緩存区 中 eNB的下行数据 a。
实施例三：
本发明的实施例三提出了一种在 Relay处进行网络编码的方法， 如图 7 所示， 包括以下步骤： 步骤 301 , 在系统中， eNB和 UE通过 Relay互相交换数据。 Relay节点 在下行 backhaul子帧接收来自 eNB的下行数据 a; Relay节点在上行非 backhaul 子帧接收来自 UE的上行数据 b。 数据 a, b的长度是相等的。
步骤 302 , Relay对接收到的数据进行解调译码， 并将译码得到的比特级 数据保存在 Relay的緩存区。 Relay对数据 a， b作二元域异或网络编码处理， 得到比特级数据"㊉ 6。
步骤 303 , eNB根据 Relay反馈的信道条件决定 Relay的上行传输方式， 并将承载了 Relay到 eNB的 backhaul链路的上行资源分配、 调制编码方式等 的 DCI信息发送给 Relay。
步骤 304, Relay将 eNB发来的 DCI信息转发给 UE。
步骤 305, Relay根据 eNB发来的 DCI信息向 eNB发送网络编码数据 a @b。
步骤 306， 在 Relay的上行 backhaul子帧， eNB接收 Relay上传的信息并 进行解调译码。同一时刻 UE也监听 Relay发往 eNB的信息，并根据此前 Relay 发来的 DCI信息对监听到的信息进行解调译码。
步骤 307, eNB译码发生错误， 向 Relay反馈错误接收的应答信息 NAK, UE正确译码后， 向 Relay反馈正确接收的应答信息 ACK。
步骤 308 , UE 将正确译码得到的网络编码数据 a 与本地已有的发给 Relay的上行数据 b作二元域的异或"㊉ 6㊉>得到 eNB的下行数据 a。
步骤 309, Relay在正确收到 eNB的应答信息 NAK后， 保留緩存区中
UE的上行数据 b。 Relay在正确收到 UE的应答信息 ACK后，将緩存区中 eNB 的下行数据 a删除。
实施例四：
本发明的实施例四提出了一种在 Relay处进行网络编码的方法， 如图 8 所示， 包括以下步驟：
步骤 401 , 在系统中， eNB和 UE通过 Relay互相交换数据。 Relay节点 在下行 backhaul子帧接收来自 eNB的下行数据 a; Relay节点在上行非 backhaul 子帧接收来自 UE的上行数据 b。 数据 a, b的长度是相等的。
步骤 402 , Relay对接收到的数据进行解调译码， 并将译码得到的比特级 数据保存在 Relay的緩存区。 Relay对数据 a, b作二元域异或网络编码处理， 得到比特级数据 @6。
步骤 403， eNB根据 Relay反馈的信道条件决定 Relay的上行传输方式， 并将承载了 Relay到 eNB的 backhaul链路的上行资源分配， 调制编码方式等 的 DCI信息发送给 Relay。
步骤 404 , Relay将 eNB发来的 DCI信息转发给 UE。
步骤 405， Relay根据 eNB发来的 DCI信息向 eNB发送网络编码数据 a ®b。
步骤 406 , 在 Relay的上行 backhaul子帧， eNB接收 Relay上传的信息并 进行解调译码。同一时刻 UE也监听 Relay发往 eNB的信息，并根据此前 Relay 发来的 DCI信息对监听到的信息进行解调译码。
步骤 407 , eNB译码发生错误， 向 Relay反馈错误接收的应答信息 NAK， UE译码发生错误 , 向 Relay反馈错误接收的应答信息 NAK。
步骤 408 , Relay在正确收到 eNB的应答信息 NAK后， 保留緩存区中 UE的上行数据 b。 Relay在正确收到 UE的应答信息 NAK后， 保留緩存区中 eNB的下行数据 a。
实施例五：
本发明的实施例五提出了一种在 Relay处进行网络编码的方法， 如图 9 所示， 包括以下步骤：
步骤 501 , 在系统中， eNB和 UE通过 Relay互相交换数据。 Relay节点 在下行 backhaul子帧接收来自 eNB的下行数据 a; Relay节点在上行非 backhaul 子帧接收来自 UE的上行数据 b。 数据 a的长度大于数据 b的长度。
步骤 502， Relay对接收到的数据进行解调译码， 并将译码得到的比特级 数据保存在 Relay的緩存区。 因为 eNB的数据 a的长度大于 UE的数据 b的 长度， 所以 Relay需要利用事先约定的已知序列 （例如全零序列）对数据 b 进行填充， 使得填充后的数据 与数据 a长度相等， 一种填充方法为： 将已 知序列接在数据 b尾部， 如图 10所示， 图 10中 n为事先约定的已知序列。 Relay对数据 a, 6'作二元域异或网络编码处理， 得到比特级数据 ㊉ 6'。
步骤 503 , eNB根据 Relay反馈的信道条件决定 Relay的上行传输方式， 并将承载了 Relay到 eNB的 backhaul链路的上行资源分配、 调制编码方式等 的 DCI信息发送给 Relay。
步骤 504, Relay将 eNB发来的 DCI信息转发给 UE。
步骤 505, Relay根据 eNB发来的 DCI信息向 eNB发送网络编码数据 a ® b 。
步骤 506, 在 Relay的上行 backhaul子帧， eNB接收 Relay上传的信息并 进行解调译码。同一时刻 UE也监听 Relay发往 eNB的信息，并根据此前 Relay 发来的 DCI信息对监听到的信息进行解调译码。
步骤 507， eNB正确译码后， 向 Relay反馈正确接收的应答信息 ACK， UE正确译码后， 向 Relay反馈正确接收的应答信息 ACK。
步骤 508 , eNB将正确译码得到的网络编码数据。㊉ δ '与本地已有的发给
Relay的下行数据 a作二元域的异或 ㊉ "得到填充后的数据 6' , 从 6'尾部 截去已知序列得到 UE上行数据 b o
步骤 509， UE利用事先约定的已知序列对数据 b进行填充， 已知序列接 在数据 b尾部， 得到填充后的数据 ' , 然后将正确译码得到的网络编码数据 α㊉ 与填充后的数据 6'作二元域的异或 α㊉ 得到 eNB的下行数据 a。
步骤 510, Relay在正确收到 eNB的应答信息 ACK后， 将緩存区中 UE 的上行数据 b删除。 Relay在正确收到 UE的应答信息 ACK后， 将緩存区中 eNB的下行数据 a删除。
实施例六：
本发明的实施例六提出了一种在 Relay处进行网络编码的方法， 如图 11 所示， 包括以下步骤：
步骤 601 , 在系统中， eNB和 UE通过 Relay互相交换数据。 Relay节点 在下行 backhaul子帧接收来自 eNB的下行数据 a; Relay节点在上行非 backhaul 子帧接收来自 UE的上行数据 b。 数据 a的长度小于数据 b的长度。
步骤 602 , Relay对接收到的数据进行解调译码， 并将译码得到的比特级 数据保存在 Relay的緩存区。 因为 eNB的数据 a的长度小于 UE的数据 b的 长度， 所以 Relay需要利用事先约定的已知序列 （例如全零序列）对数据 a 进行填充， 已知序列接在数据 a尾部， 使得填充后的数据 与数据 b长度相 等， 如图 12所示， 图 12中 n为事先约定的已知序列。 Relay对数据 Ω' , b作 二元域异或网络编码处理， 得到比特级数据" '® b。
步骤 603 , eNB根据 Relay反馈的信道条件决定 Relay的上行传输方式， 并将承载了 Relay到 eNB的 backhaul链路的上行资源分配， 调制编码方式等 的 DCI信息发送给 Relay。
步骤 604 , Relay将 eNB发来的 DCI信息转发给 UE。
步骤 605 , Relay根据 eNB发来的 DCI信息向 eNB发送网络编码数据 a、® b。
步骤 606 , 在 Relay的上行 backhaul子帧， eNB接收 Relay上传的信息并 进行解调译码。同一时刻 UE也监听 Relay发往 eNB的信息，并根据此前 Relay 发来的 DCI信息对监听到的信息进行解调译码。
步骤 607， eNB正确译码后， 向 Relay反馈正确接收的应答信息 ACK， UE正确译码后， 向 Relay反馈正确接收的应答信息 ACK。
步骤 608 , eNB用事先约定的已知序列对数据 a进行填充， 已知序列接 在数据 a尾部， 得到填充后的数据 α' , 然后将正确译码得到的网络编码数据 a'® b与填充后的数据 a '作二元域的异或 α '® 6 ® '得到 UE的数上行据 b。
步骤 609 , UE 将正确译码得到的网络编码数据 与本地已有的发给 Relay的上行数据 b作二元域的异或"'㊉ 6㊉ 6得到填充后的数据 ， 从 尾部 截去已知序列得到 eNB下行数据 a。
步骤 610 , Relay在正确收到 eNB的应答信息 ACK后， 将緩存区中 UE 的上行数据 b删除。 Relay在正确收到 UE的应答信息 ACK后， 将緩存区中 eNB的下行数据 a删除。 实施例七：
本发明的实施例七提出了一种在 Relay处进行网络编码的方法， 如图 13 所示， 包括以下步骤：
步骤 701 ,在系统中， eNB和 UE1、 UE2通过 Relay互相交换数据。 Relay 节点在下行 backhaul子帧接收来自 eNB的下行数据， 包括 a和 a2两部分， a 是 eNB要发往 UE1的数据， a2是 eNB要发往 UE2的数据； Relay节点在上 行非 backhaul子帧接收来自 UE1、 UE2的上行数据 , b2。 数据 ai的长度大 于数据 ^， 数据 ¾的长度小于数据 b2。
步骤 702 , Relay对接收到的数据进行解调译码， 并将译码得到的比特级 数据保存在 Relay的緩存区。 Relay需要先对得到的比特级数据进行处理， 以 保证网络编码顺利进行， 如图 14所示。 因为 eNB的数据 ai的长度大于 UE1 的数据 bi , 所以 Relay先在数据 bi尾部串接上事先约定的已知序列 (例如 全零序列） ， 使得填充后的数据 ^ '与数据 1长度相等。 因为 eNB的数据 a2 的长度小于 UE2的数据 b2, 所以 Relay先在数据 ¾尾部串接上事先约定的已 知序列 n2 (例如全零序列）， 使得填充后的数据 '与数据 b2长度相等。 Relay 将数据 ai , '串接（即 '接在 尾部） ， 得到数据串 a, 将数据 V , b2串接 (即 b2接在 V尾部） ， 得到数据串 b。 最后， Relay对数据 a, b作二元域异 或网络编码处理，得到比特级数据 ， 又可以划分为 ㊉^和^④^两 部分。
步骤 703 , eNB根据 Relay反馈的信道条件决定 Relay的上行传输方式， 并将承载了 Relay到 eNB的 backhaul链路的上行资源分配、 调制编码方式等 的 DCI信息发送给 Relay。
步骤 704， Relay将 eNB发来的 DCI信息转发给 UE1， UE2。
步骤 705 , Relay根据 eNB发来的 DCI信息向 eNB发送网络编码数据， 网络编码数据包含一个帧头部分， 帧头部分包含以下信息： （1 ) UE1对应的 数据部分 c¾ Θ b '的数据量大小以及 a, @ V在数据 ④ δ中对应的位置； （ 2 )UE2 对应的数据部分 α2 'θ b2的数据量大小以及 ί¾ 'θ b2在数据 "㊉ 6中对应的位置。在 帧头后面， 串接着数据"㊉)。 帧头部分和串接着的数据 ㊉ ) , 共同组成了网 络编码数据。
步骤 706 , 在 Relay的上行 backhaul子帧， eNB接收 Relay上传的网络编 码数据信息并进行解调译码。 同一时刻 UE也监听 Relay发往 eNB的网络编 码数据信息， 并根据此前 Relay发来的 DCI信息对监听到的信息进行解调译 码。
步骤 707, eNB正确译码后， 向 Relay反馈正确接收的应答信息 ACK, UE正确译码后， 向 Relay反馈正确接收的应答信息 ACK。
eNB的解码过程如图 15所示。
eNB正确译码得到网络编码数据， eNB先从网络编码数据的帧头部分中 获知以下信息： （ 1 ) UE1对应的数据部分 ㊉^ '的数据量大小以及 A㊉ V在 数据 α©6中对应的位置； （ 2 ) UE2对应的数据部分 α2 '©¾的数据量大小以及 2 '© b2在数据 "① 中对应的位置。 eNB将数据 a, @ V与本地已有的发给 Relay 的下行数据 ^作二元域的异或 ㊉^ 得到填充后的数据 V，再从 '尾部截 去已知序列 ηι后得到 UE1的上行数据 bl o eNB用已知序列 n2对本地已有的 发给 Relay的下行数据 进行填充， 已知序列接在数据 ¾尾部， 得到填充后 的数据 2 ' , 然后将数据 α2 '㊉ 与 α2 '作二元域的异或 '㊉ ㊉ '得到 UE2的上 行数据 b2。
UE1解码过程如图 16所示。
UE1正确译码得到网络编码数据， UE1先从网络编码数据的帧头部分中 获知以下信息： （ 1 ) UE1对应的数据部分 ㊉^ '的数据量大小以及 A㊉ V在 $ a ®b中对应的位置； （ 2 ) UE2对应的数据部分 α2 'Θ¾的数据量大小以及 2 '© b2在数据 ①^)中对应的位置。 UE1用已知序列 对本地已有的发给 Relay 的上行数据 ^进行填充， 已知序列接在数据 尾部， 得到填充后的数据 V， 然后将数据 ® V与 '作二元域的异或 a, ®bx '©έ, '得到 eNB的下行数据 al D UE1解码过程如图 17所示。
UE2正确译码得到网络编码数据， UE2先从网络编码数据的帧头部分中 获知以下信息： （ 1 ) UE1对应的数据部分 @^ '的数据量大小以及 A㊉ V在 $ a®b中对应的位置； （ 2 ) UE2对应的数据部分 2 'Θ ¾的数据量大小以及 α 'θ b2在数据 Θ έ中对应的位置。 UE2将数据 α2 'θ b2与本地已有的发给 Relay 的上行数据 b2作二元域的异或 '© © b2得到填充后的数据 α2 ' , 再从 α2 '尾部 截去已知序列 η2后得到 eNB发送给 UE2的下行数据 a2。
步骤 708， Relay在正确收到 eNB的应答信息 ACK后， 将緩存区中 UE 的上行数据 b删除。 Relay在正确收到 UE的应答信息 ACK后， 将緩存区中 eNB的下行数据 a删除。
上述给出了两个终端情况下的网络编码的一种方式，也可以有其它方式， 比如， a α2 '不串接， V， b2不串接，直接进行 α, θ ύ, ' ,和 α2 '㊉ ,再把 和 ^ 串接后发送出去。 多个终端下类似， 此处不再赘述。
实施例八：
本发明的实施例八提出了一种在 Relay处进行网络编码的方法， 包括以 下步骤：
步骤 801 , 在系统中， eNB和 UE通过 Relay互相交换数据。 Relay节点 在下行 backhaul子帧接收来自 eNB的下行数据； Relay节点在上行非 backhaul 子帧接收来自 UE的上行数据。
步骤 802， Relay对接收到的数据进行解调译码， 并将译码得到的比特级 数据保存在 Relay的緩存区。 Relay将在上行 backhaul子帧向 eNB发送网络 编码处理后得到的数据。 假定某个上行 backhaul子帧对应时刻 n, 上一个上 行 backhaul子帧对应时刻 n-k。 Relay从时刻 n-k+1到时刻 n之间接收到的来 自 UE的上行数据和来自 eNB的下行数据中选择数据进行网络编码操作。 例 如， Relay选择在时刻 n-k+1到时刻 n之间接收到的来自 UE的上行数据 a和 来自 eNB的下行数据 b (数据 a和 b的长度相等 ) 。 Relay对数据 a, b作二 元域异或网络编码处理， 得到比特级数据 α Θ
步骤 803 , eNB根据 Relay反馈的信道条件决定 Relay的上行传输方式， 并将承载了 Relay到 eNB的 backhaul链路的上行资源分配、 调制编码方式等 的 DCI信息发送给 Relay。 步骤 804， Relay将 eNB发来的 DCI信息转发给 UE。
步骤 805, Relay根据 eNB发来的 DCI信息向 eNB发送网络编码数据 a @b。
步骤 806,在时刻 n对应的上行 backhaul子帧， eNB接收 Relay上传的信 息并进行解调译码。 同一时刻 UE也监听 Relay发往 eNB的信息， 并根据此 前 Relay发来的 DCI信息对监听到的信息进行解调译码。
步骤 807, eNB正确译码后， 向 Relay反馈正确接收的应答信息 ACK, UE正确译码后， 向 Relay反馈正确接收的应答信息 ACK。
步骤 808 , eNB将正确译码得到的网络编码数据 a ®b与本地已有的发给 Relay的下行数据 a作二元域的异或"㊉ 6㊉"得到 UE的上行数据 b。 UE将正 确译码得到的网络编码数据 a㊉ 6与本地已有的发给 Relay的上行数据 b作二 元域的异或 ㊉ δ㊉ δ得到 eNB的下^ "数据 a。
步骤 809， Relay在正确收到 eNB的应答信息 ACK后， 将緩存区中 UE 的上行数据 b删除。 Relay在正确收到 UE的应答信息 ACK后， 将緩存区中 eNB的下行数据 a删除。
本发明实施例还提供一种中间节点，如图 18所示， 包括： 第一接收单元， 第一发送单元， 其中：
所述第一接收单元设置为， 从基站接收所述中间节点到所述基站之间上 行链路的上行传输调度信息；
所述第一发送单元设置为， 将所述上行传输调度信息发送给一个或多个 终端。
在本实施例的一种备选方案中， 所述中间节点为： 中继节点、 微基站、 家庭基站或者具有数据转发功能的终端。
在本实施例的一种备选方案中， 所述中间节点还包括： 数据处理单元， 所述第一接收单元还设置为， 接收来自所述基站的下行数据和来自所述一个 或多个终端的上行数据； 所述数据处理单元设置为， 将所述下行数据和所述上行数据进行网络编 码得到网络编码数据。
在本实施例的一种备选方案中， 所述上行数据为两个连续的上行回传子 帧之间所述终端发送给所述中间节点的数据。
在本实施例的一种备选方案中， 所述下行数据的数据量和所述上行数据 的数据量相同或不同。
在本实施例的一种备选方案中， 所述数据处理单元将所述下行数据和上 行数据进行网络编码得到网络编码数据包括：
当所述下行数据的数据量和所述上行数据的数据量不同时， 使用预先约 定的已知序列对所述下行数据和 /或所述上行数据进行填充处理， 使得处理后 的上行数据的数据量和下行数据的数据量相同， 将处理后的上行数据和下行 数据进行网络编码得到所述网络编码数据。
在本实施例的一种备选方案中， 所述数据处理单元当所述下行数据的数 据量和所述上行数据的数据量不同时， 使用预先约定的已知序列对所述下行 数据和 /或所述上行数据进行填充包括：
当所述下行数据中包括终端 UEi对应的数据 ai , 所述上行数据中包括终 端 UEi发送的数据 bi时， i = l ...k, k大于等于 1 , 进行如下填充处理：
当所述 ai的数据量大于所述 bi的数据量时，使用预先约定的已知序列对 所述 bi进行填充得到 bi' , 使得所述 bi'与所述 ai的数据量相同；
或者， 当所述 ai的数据量小于所述 bi的数据量时， 使用预先约定的已知 序列对所述 ai进行填充得到 ai' , 使得所述 ai'与所述 bi的数据量相同。
在本实施例的一种备选方案中， 当所述上行数据为多个终端的上行数据， 所述下行数据为所述基站通过中间节点发送给多个终端的下行数据时， 所述 网络编码数据中包括： 所述多个终端中每个终端对应的网络编码数据的数据 量大小、 每个终端对应的网络编码数据所在位置的指示信息， 所述多个终端 对应的网络编码数据。
在本实施例的一种备选方案中， 所述第一发送单元还设置为： 根据所述 上行传输调度信息将所述网络编码数据发送给所述基站。
本发明实施例还提供一种终端， 如图 19所示， 包括：
第二接收单元， 社会自慰从中间节点处获得所述中间节点到基站的上行 链路的上行传输调度信息。
在本实施例的一种备选方案中， 所述终端还包括： 监听单元， 设置为根 据所述上行传输调度信息监听所述中间节点发送给所述基站的网络编码数 据， 其中， 所述网络编码数据为所述中间节点根据所述基站发送的下行数据 和至少所述终端发送给所述中间节点的上行数据进行网络编码得到。
在本实施例的一种备选方案中 , 所述监听单元根据所述上行传输调度信 息监听所述中间节点发送给基站的网络编码数据包括：
所述监听单元在所述中间节点的上行回传子帧上监听所述中间节点发送 给基站的网络编码数据。
以上所述的实施方式只是本发明的一个实施实例而已， 在不违背本发明 实施例精神及实质的情况下， 技术人员可以根据本发明实施例产生其它实施 例 , 但这些基于本发明精神及实质的实施例也应该属于本发明实施例所附权 利要求的保护范围之内。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成， 所述程序可以存储于计算机可读存储介质中， 如只读 存储器、 磁盘或光盘等。 可选地， 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地， 上述实施例中的各模块 /单元可以采用 硬件的形式实现， 也可以采用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
工业实用性 本申请中， 中间节点对不同信道上收到的信息进行线性或者非线性的处 理， 然后再把处理后的信息发送给接收节点， 可以将网络信息流进一步压缩， 从而节省传输资源， 高效地利用时频资源， 提高系统吞吐量。 终端通过监听 中间节点在上行回传子帧上发送的网络编码数据， 能获得基站到终端的下行 数据， 这部分数据就不需要再通过中间节点到终端的下行资源传输， 从而节 省了时频资源。

Claims

权 利 要 求 书
1、 一种信息传输方法， 包括：
中间节点从基站接收所述中间节点到所述基站之间上行链路的上行传输 调度信息， 并将所述上行传输调度信息发送给一个或多个终端。
2、 如权利要求 1所述的方法， 其中， 所述中间节点为： 中继节点、 微基 站、 家庭基站或者具有数据转发功能的终端。
3、 如权利要求 1所述的方法， 其中， 所述方法还包括： 所述中间节点接 收来自所述基站的下行数据和来自所述一个或多个终端的上行数据， 将所述 下行数据和所述上行数据进行网络编码得到网络编码数据。
4、 如权利要求 3所述的方法， 其中， 所述上行数据为两个连续的上行回 传子帧之间所述终端发送给所述中间节点的数据。
5、 如权利要求 3所述的方法， 其中， 所述下行数据的数据量和所述上行 数据的数据量相同或不同。
6、 如权利要求 3所述的方法， 其中， 所述将所述下行数据和上行数据进 行网络编码得到网络编码数据包括：
当所述下行数据的数据量和所述上行数据的数据量不同时， 使用预先约 定的已知序列对所述下行数据和 /或所述上行数据进行填充处理， 使得处理后 的上行数据的数据量和下行数据的数据量相同， 将处理后的上行数据和下行 数据进行网絡编码得到所述网络编码数据。
7、 如权利要求 6所述的方法， 其中， 当所述下行数据的数据量和所述上 行数据的数据量不同时， 使用预先约定的已知序列对所述下行数据和 /或所述 上行数据进行填充包括：
当所述下行数据中包括终端 UEi对应的数据 ai , 所述上行数据中包括终 端 UEi发送的数据 bi时， i = l ...k, k大于等于 1 , 进行如下填充处理： 当所述 ai的数据量大于所述 bi的数据量时，使用预先约定的已知序列对 所述 bi进行填充得到 bi'， 使得所述 bi'与所述 ai的数据量相同；
或者， 当所述 ai的数据量小于所述 bi的数据量时， 使用预先约定的已知 序列对所述 ai进行填充得到 ai' , 使得所述 ai'与所述 bi的数据量相同。
8、 如要求 3所述的方法， 其中， 所述方法还包括： 当所述上行数据为多 个终端的上行数据， 所述下行数据为所述基站通过中间节点发送给多个终端 的下行数据时， 所述网络编码数据中包括： 所述多个终端中每个终端对应的 网絡编码数据的数据量大小、 每个终端对应的网络编码数据所在位置的指示 信息 , 所述多个终端对应的网络编码数据。
9、 如权利要求 3至 8任一所述的方法， 其中， 所述方法还包括： 所述中 间节点根据所述上行传输调度信息将所述网络编码数据发送给所述基站。
10、 一种信息传输方法， 包括：
终端从中间节点处获得所述中间节点到基站的上行链路的上行传输调度 信息。
11、 如权利要求 10所述的方法， 其中， 所述中间节点为： 中继节点、 微 基站、 家庭基站或者具有数据转发功能的终端。
12、 如权利要求 10所述的方法， 其中， 所述方法还包括： 所述终端根据 所述上行传输调度信息监听所述中间节点发送给所述基站的网络编码数据， 其中， 所述网絡编码数据为所述中间节点根据所述基站发送的下行数据和至 少所述终端发送给所述中间节点的上行数据进行网络编码得到。
13、 如权利要求 12所述的方法， 其中， 所述终端根据所述上行传输调度 信息监听所述中间节点发送给基站的网络编码数据包括：
所述终端在所述中间节点的上行回传子帧上监听所述中间节点发送给基 站的网络编码数据。
14、 一种中间节点， 所述中间节点包括： 第一接收单元， 第一发送单元， 其中：
所述第一接收单元设置为， 从基站接收所述中间节点到所述基站之间上 行链路的上行传输调度信息；
所述第一发送单元设置为， 将所述上行传输调度信息发送给一个或多个 终端。
15、如权利要求 14所述的中间节点， 其中， 所述中间节点为： 中继节点、 微基站、 家庭基站或者具有数据转发功能的终端。
16、 如权利要求 14所述的中间节点， 其中， 所述中间节点还包括： 数据 处理单元；
所述第一接收单元还设置为， 接收来自所述基站的下行数据和来自所述 一个或多个终端的上行数据；
所述数据处理单元设置为， 将所述下行数据和所述上行数据进行网络编 码得到网络编码数据。
17、 如权利要求 16所述的中间节点， 其中， 所述上行数据为两个连续的
18、 如权利要求 16所述的中间节点， 其中， 所述下行数据的数据量和所 述上行数据的数据量相同或不同。
19、 如权利要求 16所述的中间节点， 其中， 所述数据处理单元设置为将 所述下行数据和上行数据进行网络编码得到网絡编码数据包括：
当所述下行数据的数据量和所述上行数据的数据量不同时， 使用预先约 定的已知序列对所述下行数据和 /或所述上行数据进行填充处理， 使得处理后 的上行数据的数据量和下行数据的数据量相同， 将处理后的上行数据和下行 数据进行网络编码得到所述网络编码数据。
20、 如权利要求 19所述的中间节点， 其中， 所述数据处理单元设置为当 所述下行数据的数据量和所述上行数据的数据量不同时， 使用预先约定的已 知序列对所述下行数据和 /或所述上行数据进行填充包括：
当所述下行数据中包括终端 UEi对应的数据 ai , 所述上行数据中包括终 端 UEi发送的数据 bi时， i = l ...k， k大于等于 1， 进行如下填充处理：
当所述 ai的数据量大于所述 bi的数据量时，使用预先约定的已知序列对 所述 bi进行填充得到 bi' , 使得所述 bi'与所述 ai的数据量相同；
或者， 当所述 ai的数据量小于所述 bi的数据量时， 使用预先约定的已知 序列对所述 ai进行填充得到 ai' , 使得所述 ai'与所述 bi的数据量相同。
21、 如权利要求 16所述的中间节点， 其中， 当所述上行数据为多个终端 的上行数据， 所述下行数据为所述基站通过中间节点发送给多个终端的下行 数据时， 所述网络编码数据中包括： 所述多个终端中每个终端对应的网络编 码数据的数据量大小、每个终端对应的网络编码数据所在的位置的指示信息， 所述多个终端对应的网络编码数据。
22、 如权利要求 16至 21任一所述的中间节点， 其中， 所述第一发送单 元还设置为： 根据所述上行传输调度信息将所述网络编码数据发送给所述基 站。
23、 一种终端， 包括：
第二接收单元， 设置为从中间节点处获得所述中间节点到基站的上行链 路的上行传输调度信息。
24、 如权利要求 23所述的终端， 其中， 所述终端还包括：
监听单元， 设置为根据所述上行传输调度信息监听所述中间节点发送给 所述基站的网络编码数据， 其中， 所述网络编码数据为所述中间节点根据所 述基站发送的下行数据和至少所述终端发送给所述中间节点的上行数据进行 网络编码得到。
25、 如权利要求 24所述的终端， 其中， 所述监听单元设置为根据所述上 行传输调度信息监听所述中间节点发送给基站的网絡编码数据包括：
所述监听单元在所述中间节点的上行回传子帧上监听所述中间节点发送 给基站的网络编码数据。
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CN102404078A (zh) * 2011-12-14 2012-04-04 电子科技大学 一种在lte-a中实现网络编码的方法
CN103095439A (zh) * 2013-01-10 2013-05-08 周亚建 基于网络编码的双向协作中继传输数据的方法和设备

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