WO2016184074A1 - 一种基于协作网络编码场景的传输方法及系统 - Google Patents

一种基于协作网络编码场景的传输方法及系统 Download PDF

Info

Publication number
WO2016184074A1
WO2016184074A1 PCT/CN2015/096143 CN2015096143W WO2016184074A1 WO 2016184074 A1 WO2016184074 A1 WO 2016184074A1 CN 2015096143 W CN2015096143 W CN 2015096143W WO 2016184074 A1 WO2016184074 A1 WO 2016184074A1
Authority
WO
WIPO (PCT)
Prior art keywords
node
source node
indication
transmission
local information
Prior art date
Application number
PCT/CN2015/096143
Other languages
English (en)
French (fr)
Inventor
刘星
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 WO2016184074A1 publication Critical patent/WO2016184074A1/zh

Links

Images

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
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0076—Distributed coding, e.g. network coding, involving channel coding
    • H04L1/0077—Cooperative coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/026—Co-operative diversity, e.g. using fixed or mobile stations as relays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • 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]
    • H04L1/1816—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of the same, encoded, message
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0028—Formatting
    • H04L1/003—Adaptive formatting arrangements particular to signalling, e.g. variable amount of bits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • This document relates to, but is not limited to, the field of wireless communications, and in particular, to a transmission method and system based on a cooperative network coding scenario.
  • Spatial diversity (SD) technology is widely recognized as a method to effectively resist multipath fading of wireless channels.
  • the source node sends the same piece of information from different independent channels to the destination node.
  • multiple independent channels are provided by multiple antennas deployed at the transmitting or receiving end.
  • the provision of multiple antennas on actual user equipment is limited by conditions such as size, cost, and hardware.
  • each single-antenna source node has a cooperative node, and spatial diversity is a method by which each single-antenna source node not only transmits its own local information but also forwards the local information of the cooperative node.
  • CD Cooperative Diversity
  • Network Coding (NC) technology refers to a method of encoding and retransmitting multiple independent information streams at a relay node, thereby increasing the capacity of the communication network.
  • the relay node is only responsible for receiving, storing and forwarding data, and the relay node under the network coding additionally performs linear or non-linear processing on multiple independent data according to the coding rule before forwarding.
  • more complex coding and decoding techniques such as combining network coding and channel coding, or using iterative decoding and soft decoding, can fully exploit the data contained in the network-coded synthesized data. The content of each independent data.
  • Applying network coding technology to cooperative diversity technology means that each source node no longer simply sends its own local information and receives, stores and forwards the local information of the collaboration node, but instead sends its own local information and collaboration nodes.
  • the local information is encoded by the network and then sent to the destination node, that is, the cooperative network coding technology.
  • hybrid automatic repeat request In order to resist the time-varying and multipath fading of wireless channels, hybrid automatic repeat request (HARQ, Hybrid Automatic Repeat reQuest technology is used in many modern communication systems to improve the reliability of data transmission.
  • the HARQ technology uses Forward Error Correction (FEC) coding technology and Automatic Repeat ReQuest (ARQ) technology to increase transmission reliability by adding redundancy and retransmission.
  • FEC Forward Error Correction
  • ARQ Automatic Repeat ReQuest
  • PRBs Physical Resource Blocks
  • MCS Modulation and Coding Schemes
  • the embodiment of the invention provides a transmission method and system based on a cooperative network coding scenario, which can solve the technical problem that the reliability of data transmission cannot be guaranteed without HARQ feedback and retransmission in the cooperative network coding.
  • An embodiment of the present invention provides a transmission method based on a cooperative network coding scenario, including: a source node acquires a transmission indication of local information sent by a destination node to a source node and a cooperation node thereof; and the source node obtains the transmission according to the obtained Instructs to send its own local information or network-encoded data to the destination node.
  • the embodiment of the present invention further provides a transmission method based on a cooperative network coding scenario, including: the destination node sends a transmission indication to the source node to the local information of the source node and its cooperation node; and the destination node receives the source node according to the source node.
  • the transmission indicates the transmission of its own local information or network Encoded data.
  • the embodiment of the present invention further provides a transmission system based on a cooperative network coding scenario, which is located at a source node, and includes: a source node acquisition module, configured to acquire local information sent by the destination node to the source node and its collaboration node. And transmitting, by the source node, a sending module, configured to send the local information of the source node or the network encoded data to the destination node according to the obtained transmission indication.
  • a source node acquisition module configured to acquire local information sent by the destination node to the source node and its collaboration node.
  • a sending module configured to send the local information of the source node or the network encoded data to the destination node according to the obtained transmission indication.
  • the embodiment of the present invention further provides a transmission system based on a cooperative network coding scenario, which is located at a destination node, and includes: a destination node sending module, configured to send, to the source node, a transmission indication of local information of the source node and its cooperation node. And a destination node receiving module, configured to receive local information or network-encoded data of the source node that is sent by the source node according to the transmission indication.
  • a destination node sending module configured to send, to the source node, a transmission indication of local information of the source node and its cooperation node.
  • a destination node receiving module configured to receive local information or network-encoded data of the source node that is sent by the source node according to the transmission indication.
  • the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the above method.
  • the source node acquires a transmission indication of the local information sent by the destination node to the source node and its cooperation node; the source node sends its own local information or network coding to the destination node according to the obtained transmission indication. After the data.
  • the HARQ retransmission technology is introduced into the cooperative network coding scenario, and the HARQ retransmission technology is used to ensure the reliability of the cooperative network coding transmission, which compensates for the time-varying and multipath fading of the pure cooperative network coding due to the wireless channel.
  • the defect of packet loss improves the decoding rate of the information sent by the destination node to the source node, thereby improving the overall performance of the system.
  • FIG. 1 is a flowchart of a method for transmitting a scenario based on a cooperative network coding scenario according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another method for transmitting a scenario based on a cooperative network coding scenario according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a wireless uplink HARQ system based on cooperative network coding according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a transmission system based on a cooperative network coding scenario at a source node according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a transmission system based on a cooperative network coding scenario according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a transmission system based on a cooperative network coding scenario at a destination node according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of a transmission system based on a cooperative network coding scenario according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of a method for transmitting a scenario based on a cooperative network coding scenario according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of processing of a HARQ indication when a source node obtains only a HARQ indication according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of processing of indicating new data in control information when a source node receives control information for the source node according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a method for transmitting a scenario based on a cooperative network coding scenario according to an embodiment of the present invention.
  • a transmission method based on a cooperative network coding scenario provided by an embodiment of the present invention includes the following steps:
  • Step 11 The source node acquires a transmission indication of the local information sent by the destination node to the source node and its cooperation node.
  • Step 12 The source node sends its own local information or network-encoded data to the destination node according to the obtained transmission indication.
  • the transmission indication of the local information of the source node and its cooperation node is controlled by the control information and/or HARQ indicates carrying.
  • the control information (CI, Control Information) includes a 2-bit New Data Indicator (NDI), and the new data indication is used to indicate whether the local information of the corresponding source node needs to be retransmitted.
  • the HARQ indication includes a 2-bit acknowledgment/non-acknowledgement (ACK/NACK) indication for indicating the decoding of the local information transmitted by the corresponding source node last time.
  • the source node obtains, by the destination node, the transmission indication of the local information sent by the destination node to the source node and the collaboration node, including:
  • the source node receives control information sent by the destination node to the source node;
  • the source node listens to the HARQ indication sent by the destination node to the cooperation node of the source node; or
  • the source node receives the control information sent by the destination node to the source node, and listens to the HARQ indication sent by the destination node to the cooperation node of the source node.
  • the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the above method.
  • an embodiment of the present invention further provides a transmission method based on a cooperative network coding scenario, including the following steps:
  • the destination node sends a transmission indication to the source node to the local information of the source node and its cooperation node;
  • the destination node receives its own local information or network-encoded data sent by the source node according to the transmission indication.
  • the transmission indication of the local information of the source node and its cooperation node is carried by the control information and/or the HARQ indication.
  • the control information includes a 2-bit new data indication, and the new data indication is used to indicate whether local information of the corresponding source node needs to be retransmitted.
  • the HARQ indication includes a 2-bit acknowledgment/non-acknowledgement indication for indicating the decoding of the local information transmitted by the corresponding source node last time.
  • the source node, the cooperation node, and the destination node may be any combination of any node types in the radio access network.
  • the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the above method.
  • FIG. 3 is a schematic diagram of a wireless uplink HARQ system based on cooperative network coding according to an embodiment of the present invention.
  • a cooperative uplink network coding-based wireless uplink HARQ system includes two independent source nodes (a source node S1 and a source node S2) and a destination node D, and a destination node D. Uplink scheduling and control are performed on the source nodes S1 and S2.
  • the two source nodes S1 and S2 are mutually cooperative partners, that is, each source node also has the responsibility to help the cooperative node transmit information to the destination node D while transmitting its own local information to the destination node D.
  • Each node shown in Figure 3 is equipped with only one transmit antenna and one receive antenna, and operates in a half-duplex mode. Therefore, the time division multiplexing (TDM) operation mode is adopted between the source nodes.
  • TDM time division multiplexing
  • the source node S1 transmits information to the target node D in the first half slot
  • the source node S2 transmits information to the destination node D in the second half slot. Due to the broadcast characteristics of the wireless signal, in addition to the target node D, each source node can eavesdrop on the information transmitted by the cooperative node. Each source node attempts to decode the information sent by the cooperating node.
  • the source node will network encode its own local information and the local information of the cooperative node in the information sent by the cooperative node according to the scheduling and control requirements of the destination node D, and then according to the scheduling and control requirements of the destination node D, and then The network-encoded information is sent to the destination node D to implement cooperative diversity. If the source node does not successfully decode the information sent by the cooperation node or the destination node D does not require cooperative forwarding, the source node only sends its own local information.
  • an embodiment of the present invention further provides a transmission system based on a cooperative network coding scenario, which is located at a source node, and includes:
  • a source node obtaining module configured to acquire, by the destination node, a transmission indication of local information of the source node and its cooperation node;
  • the source node sending module is configured to send the local information of the source node or the network encoded data to the destination node according to the obtained transmission indication.
  • the transmission indication of the local information of the source node and its cooperation node is controlled by the control information and/or HARQ indicates carrying.
  • the control information includes a 2-bit new data indication, and the new data indication is used to indicate whether local information of the corresponding source node needs to be retransmitted.
  • the HARQ indication includes a 2-bit acknowledgment/non-acknowledgement indication for indicating the decoding of the local information transmitted by the corresponding source node last time.
  • FIG. 5 is a schematic diagram of a transmission system based on a cooperative network coding scenario according to an embodiment of the present invention.
  • the foregoing transmission system includes:
  • the first source node obtaining module 201 is configured to receive control information that is sent by the destination node to the source node;
  • the second source node obtaining module 202 is configured to listen to the HARQ indication of the cooperation node that the destination node sends to the source node;
  • the source node sending module 203 is configured to send the local information of the source node or the network encoded data to the destination node according to the obtained control information and/or the HARQ indication;
  • the source node receiving module 204 is configured to receive information sent by the cooperation node of the source node;
  • the source node decoding module 205 is configured to decode information sent by the cooperation node of the source node.
  • the descriptions of the control information and the HARQ indication are the same as those of the above embodiment, and thus will not be described again.
  • the embodiment of the present invention further provides a transmission system based on a cooperative network coding scenario, which is located at a destination node, and includes:
  • a destination node sending module configured to send, to the source node, a transmission indication of local information of the source node and its cooperation node;
  • the destination node receiving module is configured to receive local information or network-encoded data of the source node that is sent by the source node according to the transmission indication.
  • the transmission indication of the local information of the source node and its cooperation node is carried by the control information and/or the HARQ indication.
  • the control information includes a 2-bit new data indication, and the new data indication is used to indicate whether local information of the corresponding source node needs to be retransmitted.
  • the HARQ indication includes a 2-bit acknowledgment/non-acknowledgement indication for indicating the decoding of the local information transmitted by the corresponding source node last time.
  • FIG. 7 is a schematic diagram of a transmission system based on a cooperative network coding scenario according to an embodiment of the present invention.
  • the foregoing transmission system includes:
  • the first destination node sending module 301 is configured to send control information to the source node
  • the second destination node sending module 302 is configured to send a HARQ indication to the source node.
  • the destination node receiving module 303 is configured to receive local information of the source node or network encoded data sent by the source node;
  • the destination node encoding module 304 is configured to decode data sent by the source node.
  • control information and the HARQ indication are the same as those of the above embodiment, and thus will not be described again.
  • FIG. 8 is a flowchart of a method for transmitting a scenario based on a cooperative network coding scenario according to an embodiment of the present invention.
  • this embodiment illustrates a scenario in which a user equipment (UE, User Equipment) that is a cooperative partner transmits information to a base station (eNB, Evolved Node B) in a Long Term Evolution (LTE) system.
  • UE user equipment
  • eNB Evolved Node B
  • LTE Long Term Evolution
  • the steps in this embodiment are as follows:
  • Step 401 The eNB sends downlink control information (DCI, Downlink Control Information) including the scheduling information of the UE1, the UE1 receives the downlink control information including the scheduling information, and the UE2 eavesdrops the downlink control information including the scheduling information.
  • DCI Downlink Control Information
  • Step 402 The eNB sends a HARQ indication of the decoding of the local information of the UE1 and the UE2, and the UE1 eavesdrops on the HARQ indication, wherein, as the UE1 and the UE2 transmit alternately, the eNB is currently transmitted by the UE1.
  • the transmitted HARQ indication is feedback for the last UE2 transmission. In addition, since UE2 does not need to transmit this time, UE2 may not receive the HARQ indication.
  • Step 403 The UE1 encodes and modulates the information according to the requirement of the scheduling information and the HARQ indication in the downlink control information, and sends the information to the eNB on the specified time-frequency resource.
  • Step 404 The eNB receives the information sent by the UE1 on the time-frequency resource specified by the scheduling information, and the UE2 overheards the information sent by the UE1 on the time-frequency resource specified by the scheduling information.
  • Step 405 The eNB performs a decoding operation on the information sent by the UE1, and at the same time, the UE2 performs a decoding operation on the information sent by the UE1.
  • the above steps of this embodiment are performed alternately for UE1 and UE2. That is, in a certain time slot t, the eNB schedules UE1 to transmit information in the first half slot, and schedules UE2 to transmit information in the second half slot.
  • the downlink control information which is used in step 401 of this embodiment, includes scheduling information for UE1, and based on the original downlink control information format 0 and format 4 (DCI format 0/4), 1 bit of new data is used.
  • the indication (NDI, New Data Indicator) field is increased to 2 bits.
  • MSB highest bit
  • MSB lowest bit
  • LSB lowest bit
  • the HARQ indication sent by the eNB in step 402 of this embodiment includes 2 bits of data.
  • the highest bit of the HARQ feedback indicates the decoding of the local information sent by the UE1 last time, and the lowest bit of the HARQ feedback indicates the decoding of the local information sent by the UE2 last time.
  • step 403 of the embodiment the UE1 encodes and modulates the information according to the requirements of the scheduling information and the HARQ indication in the downlink control information.
  • FIG. 9 is a schematic diagram of processing of a HARQ indication ejected in step 402 when a source node obtains only a HARQ indication according to an embodiment of the present invention. As shown in Figure 9, the following situations are included:
  • the UE1 transmits the network-encoded data, and the data includes the retransmitted local information of the UE1 and the retransmitted local information of the UE2, using non-adaptive retransmission. ;
  • the UE1 transmits the network-encoded data, and the data includes the newly transmitted local information of the UE1 and the retransmitted local information of the UE2, using non-adaptive Retransmission;
  • the UE1 If the highest bit value indicated by the HARQ is NACK and the lowest bit value is ACK, the UE1 only retransmits the local information of the UE1, and uses non-adaptive retransmission;
  • the non-adaptive retransmission mentioned above indicates that the UE1 performs encoding processing according to the information to be sent by the MCS in the latest control information, and transmits the information on the radio resource PRB indicated by the latest control information.
  • the latest control information in this embodiment refers to the control information of the eNB to the UE1 or the UE2, including the control information sent by the eNB received by the UE1 to the UE1 and the control information sent by the eNB that the UE1 overhears to the UE2.
  • FIG. 10 is a process of processing an NDI field in downlink control information received in step 401 when a source node (such as UE1) receives downlink control information for scheduling information of the source node (such as UE1) according to an embodiment of the present invention.
  • a source node such as UE1
  • the UE1 transmits the network-encoded data, and the data includes the newly transmitted local information of the UE1 and the retransmitted local information of the UE2, and the UE1 sends the network coding according to the control information.
  • the UE1 transmits only the local information of the UE1, and the local information of the UE1 is a new transmission, and the UE1 sends the newly transmitted local information according to the control information.
  • the UE1 If the highest bit of the NDI does not roll over and the lowest bit is inverted, the UE1 only transmits the local information of the UE1, and the local information of the UE1 is retransmitted, and the UE1 transmits the retransmission local information according to the control information, that is, the traditional adaptive weight. pass;
  • the UE1 sends the network-encoded data, and the data includes the retransmitted local information of the UE1 and the retransmitted local information of the UE2, and the UE1 sends the network coding according to the control information.
  • the data includes the retransmitted local information of the UE1 and the retransmitted local information of the UE2, and the UE1 sends the network coding according to the control information.
  • the embodiment of the present invention is also applicable to a scenario in which a relay node (RN, Relay Node) that is a cooperative partner transmits information to a donor base station (DeNB, Donor Evolved Node B) in a long term evolution system.
  • RN relay node
  • DeNB Donor Evolved Node B
  • the RN1 is, for example, the source node S1 in FIG. 3
  • the RN2 is, for example, the source node S2 in FIG. 3
  • the DeNB is, for example, the destination node D in FIG.
  • the RN In the HARQ retransmission in the cooperative network coding scenario based on the RN and the DeNB, the RN defaults that the DeNB transmits only the HARQ indication that the highest bit and the lowest bit value are both ACK, and the RN and The modules and steps involved in the DeNB are the same as those of the UE and the eNB. Therefore, it will not be repeated here.
  • the embodiment of the present invention improves the reliability of the cooperative network coding transmission by using the HARQ technology to introduce the HARQ retransmission technology in the cooperative network coding system, and compensates for the defect of the simple cooperative network coding packet loss and improves the transmission.
  • the decoding rate of the data thereby improving the overall performance of the system.
  • each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function.
  • the invention is not limited to any specific form of combination of hardware and software.
  • the above technical solution introduces the HARQ retransmission technology into the cooperative network coding scenario, and utilizes the HARQ retransmission technology to ensure the reliability of the cooperative network coding transmission, and compensates for the loss of the pure cooperative network coding due to the time variation of the wireless channel and the multipath fading.
  • the defect improves the decoding rate of the information sent by the destination node to the source node, thereby improving the overall performance of the system.

Abstract

一种基于协作网络编码场景的传输方法及系统，包括：信源节点获取目的节点发送的对该信源节点与其协作节点的本地信息的传输指示；信源节点根据获得的所述传输指示，向目的节点发送自己的本地信息或网络编码后的数据。上述技术方案公开的基于协作网络编码场景的传输方法及系统，能够解决相关的协作网络编码中没有HARQ反馈和重传导致数据传输可靠性无法保证的问题。

Description

一种基于协作网络编码场景的传输方法及系统 技术领域
本文涉及但不限于无线通信领域，尤其涉及一种基于协作网络编码场景的传输方法及系统。
背景技术
空间分集(SD，Spatial Diversity)技术被广泛认为是一种有效抵御无线信道多径衰落的方法。信源节点将同一份信息，从不同的独立信道发送给目的节点。通常，这样的多条独立信道由发送端或接收端部署的多根天线提供。然而，在实际的用户设备上配备多天线受到体积、成本和硬件等条件的限制。在不具备多天线的发射系统中，每个单天线信源节点都有一个协作节点，空间分集是通过让每一个单天线信源节点不仅发送自己的本地信息并转发协作节点的本地信息的方法来实现的，我们称之为协作分集(CD，Cooperative Diversity)技术。
网络编码(NC，Network Coding)技术，是指通过在中继节点对多个独立信息流进行编码再转发的方法，从而提高通信网络的容量。在传统的数据传输系统中，中继节点只负责数据的接收、储存和转发，而网络编码下的中继节点在转发之前会额外根据编码规则对多个独立数据进行线性或非线性的处理。随着网络编码研究的深入，使用更复杂的编码和解码技术，如将网络编码和信道编码结合，或使用迭代解码和软解码等方法，可以充分挖掘经过网络编码后的合成的数据中包含的各独立数据的内容。
将网络编码技术应用到协作分集技术中，意味着每一个信源节点不再是单纯的发送自己的本地信息并接收、储存和转发协作节点的本地信息，而是将自己的本地信息和协作节点的本地信息进行网络编码后再发送给目的节点，即协作网络编码技术。
为了抵抗无线信道的时变性和多径衰落，混合自动重传请求(HARQ， Hybrid Automatic Repeat reQuest)技术被应用在很多现代通信系统中，以提高数据传输的可靠性。HARQ技术采用前向纠错(FEC，Forward Error Correction)编码的技术和自动重传请求(ARQ，Automatic Repeat reQuest)技术，通过增加冗余和重传的方式，实现传输可靠性的提高。根据重传时是否必须使用不同的物理资源块(PRB，Physical Resource Block)及调制和编码策略(MCS，Modulation and Coding Scheme)，HARQ的工作方式可分为自适应和非自适应两种。对于自适应重传，重传使用的新的PRB及MCS，由控制信息重新分配。
目前，网络编码和HARQ技术相结合的研究已经广泛涉及多播和广播无线通信系统。在点对点的单播无线通信系统中，也存在针对网络编码和HARQ技术相结合的研究。然而，在相关的单播无线通信系统的研究中，信源节点只在重传时才使用网络编码，即信源节点只在收到HARQ反馈发现多个数据都解码失败的情况下，才利用网络编码将解码失败的多个数据经过处理后再发送，并不能充分的利用协作网络编码带来的空间分集增益。可见，对协作网络编码环境下HARQ重传的研究，目前还比较欠缺。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供一种基于协作网络编码场景的传输方法及系统，能够解决协作网络编码中没有HARQ反馈和重传导致数据传输可靠性无法保证的技术问题。
本发明实施例提供一种基于协作网络编码场景的传输方法，包括：信源节点获取目的节点发送的对该信源节点与其协作节点的本地信息的传输指示；信源节点根据获得的所述传输指示，向目的节点发送自己的本地信息或网络编码后的数据。
本发明实施例还提供一种基于协作网络编码场景的传输方法，包括：目的节点向信源节点发送对该信源节点与其协作节点的本地信息的传输指示；目的节点接收所述信源节点根据所述传输指示发送的自己的本地信息或网络 编码后的数据。
本发明实施例还提供一种基于协作网络编码场景的传输系统，位于信源节点，包括：信源节点获取模块，设置为获取目的节点发送的对所述信源节点与其协作节点的本地信息的传输指示；信源节点发送模块，设置为根据获得的所述传输指示，向目的节点发送所述信源节点的本地信息或网络编码后的数据。
本发明实施例还提供一种基于协作网络编码场景的传输系统，位于目的节点，包括：目的节点发送模块，设置为向信源节点发送对所述信源节点与其协作节点的本地信息的传输指示；目的节点接收模块，设置为接收所述信源节点根据所述传输指示发送的该信源节点的本地信息或网络编码后的数据。
本发明实施例还提供了一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行上述的方法。
在本发明实施例中，信源节点获取目的节点发送的对该信源节点与其协作节点的本地信息的传输指示；信源节点根据获得的传输指示，向目的节点发送自己的本地信息或网络编码后的数据。通过本发明实施例，将HARQ重传技术引入到协作网络编码的场景中，利用HARQ重传技术保证协作网络编码传输的可靠性，弥补了单纯协作网络编码因无线信道的时变性和多径衰落而丢包的缺陷，提高了目的节点对信源节点发送的信息的解码率，从而提高了系统的总体性能。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1为本发明实施例提供的基于协作网络编码场景的传输方法的流程图；
图2为本发明实施例提供的另一基于协作网络编码场景的传输方法的流程图；
图3为本发明实施例应用的基于协作网络编码的无线上行HARQ系统；
图4为本发明实施例提供的位于信源节点的基于协作网络编码场景的传输系统的示意图；
图5为本发明实施例提供的基于协作网络编码场景的传输系统的示意图；
图6为本发明实施例提供的位于目的节点的基于协作网络编码场景的传输系统的示意图；
图7为本发明实施例提供的基于协作网络编码场景的传输系统的示意图；
图8为本发明实施例提供的基于协作网络编码场景的传输方法的流程图；
图9为本发明实施例中，信源节点只获得HARQ指示时对HARQ指示的处理示意图；
图10为本发明实施例中，信源节点收到针对本信源节点的控制信息时对控制信息中新数据指示的处理示意图。
本发明的实施方式
以下结合附图对本发明的实施例进行详细说明，应当理解，以下所说明的实施例仅用于说明和解释本发明，并不用于限定本发明。
图1为本发明实施例提供的基于协作网络编码场景的传输方法的流程图。如图1所示，本发明实施例提供的基于协作网络编码场景的传输方法包括以下步骤：
步骤11：信源节点获取目的节点发送的对该信源节点与其协作节点的本地信息的传输指示；
步骤12：信源节点根据获得的传输指示，向目的节点发送自己的本地信息或网络编码后的数据。
其中，信源节点与其协作节点的本地信息的传输指示由控制信息和/或 HARQ指示携带。可选的，控制信息(CI，Control Information)包括2比特的新数据指示(NDI，New Data Indicator)，新数据指示用于表示对应信源节点的本地信息是否需要重传。HARQ指示包含2比特的确认/不确认(ACK/NACK)指示，用于表示对应信源节点上一次发送的本地信息的解码情况。
可选的，信源节点获取目的节点发送的对该信源节点与其协作节点的本地信息的传输指示包括：
信源节点接收目的节点发送给该信源节点的控制信息；或者，
信源节点监听目的节点发送给该信源节点的协作节点的HARQ指示；或者，
信源节点接收目的节点发送给该信源节点的控制信息，并监听目的节点发送给该信源节点的协作节点的HARQ指示。
本发明实施例还提供了一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行上述的方法。
如图2所示，本发明实施例还提供一种基于协作网络编码场景的传输方法，包括以下步骤：
目的节点向信源节点发送对信源节点与其协作节点的本地信息的传输指示；
目的节点接收信源节点根据传输指示发送的自己的本地信息或网络编码后的数据。
其中，信源节点与其协作节点的本地信息的传输指示由控制信息和/或HARQ指示携带。可选的，控制信息包括2比特的新数据指示，新数据指示用于表示对应信源节点的本地信息是否需要重传。HARQ指示包含2比特的确认/不确认指示，用于表示对应信源节点上一次发送的本地信息的解码情况。
于上述实施例中，信源节点、协作节点、目的节点可以是无线接入网中任意节点类型的任意组合。
本发明实施例还提供了一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行上述的方法。
图3为本发明实施例应用的基于协作网络编码的无线上行HARQ系统。如图3所示，本发明实施例应用的基于协作网络编码的无线上行HARQ系统包含两个独立的信源节点(信源节点S1和信源节点S2)和一个目的节点D，由目的节点D对信源节点S1和S2进行上行调度和控制。两个信源节点S1和S2互为协作伙伴，即每个信源节点在向目的节点D传输自己的本地信息的同时，也有责任帮助协作节点向目的节点D传输信息。
图3所示的每个节点都只配备有一根发射天线和一根接收天线，采用半双工模式工作，因此，信源节点间采用时分复用(TDM，Time Division Multiplexing)的工作方式。在某一时隙t，信源节点S1在前半时隙向目标节点D发送信息，信源节点S2在后半时隙向目的节点D发送信息。由于无线信号的广播特性，除了目标节点D，每个信源节点都能偷听到协作节点发送的信息。每个信源节点都试图解码协作节点发送的信息。如果解码成功，该信源节点在紧接的自己的发送时隙，会根据目的节点D的调度和控制要求将自己的本地信息和协作节点发送的信息中协作节点的本地信息进行网络编码，然后将网络编码后的信息发送给目的节点D，从而实现协作分集。如果信源节点对协作节点发送的信息解码不成功或目的节点D不要求协作转发，信源节点仅发送自己的本地信息。
如图4所示，本发明实施例还提供一种基于协作网络编码场景的传输系统，位于信源节点，包括：
信源节点获取模块，设置为获取目的节点发送的对所述信源节点与其协作节点的本地信息的传输指示；
信源节点发送模块，设置为根据获得的所述传输指示，向目的节点发送所述信源节点的本地信息或网络编码后的数据。
其中，信源节点与其协作节点的本地信息的传输指示由控制信息和/或 HARQ指示携带。可选的，控制信息包括2比特的新数据指示，新数据指示用于表示对应信源节点的本地信息是否需要重传。HARQ指示包含2比特的确认/不确认指示，用于表示对应信源节点上一次发送的本地信息的解码情况。
图5为本发明实施例提供的基于协作网络编码场景的传输系统的示意图。于本实施例中，上述传输系统包括：
第一信源节点获取模块201，设置为接收目的节点发送给该信源节点的控制信息；
第二信源节点获取模块202，设置为监听获取目的节点发送给该信源节点的协作节点的HARQ指示；
信源节点发送模块203，设置为根据获得的控制信息和/或HARQ指示，向目的节点发送该信源节点的本地信息或网络编码后的数据；
信源节点接收模块204，设置为接收该信源节点的协作节点发送的信息；
信源节点解码模块205，设置为解码该信源节点的协作节点发送的信息。其中，关于控制信息及HARQ指示的说明同上述实施例，故于此不再赘述。
如图6所示，本发明实施例还提供一种基于协作网络编码场景的传输系统，位于目的节点，包括：
目的节点发送模块，设置为向信源节点发送对所述信源节点与其协作节点的本地信息的传输指示；
目的节点接收模块，设置为接收所述信源节点根据所述传输指示发送的该信源节点的本地信息或网络编码后的数据。
其中，信源节点与其协作节点的本地信息的传输指示由控制信息和/或HARQ指示携带。可选的，控制信息包括2比特的新数据指示，新数据指示用于表示对应信源节点的本地信息是否需要重传。HARQ指示包含2比特的确认/不确认指示，用于表示对应信源节点上一次发送的本地信息的解码情况。
图7为本发明实施例提供的基于协作网络编码场景的传输系统的示意图。于本实施例中，上述传输系统包括：
第一目的节点发送模块301，设置为向信源节点发送控制信息；
第二目的节点发送模块302，设置为向信源节点发送HARQ指示；
目的节点接收模块303，设置为接收信源节点发送的该信源节点的本地信息或网络编码后的数据；
目的节点编码模块304，设置为解码信源节点发送的数据。
其中，关于控制信息及HARQ指示的说明同上述实施例，故于此不再赘述。
图8为本发明实施例提供的基于协作网络编码场景的传输方法的流程图。如图8所示，本实施例说明在长期演进(LTE，Long-Term Evolution)系统中，互为协作伙伴的用户设备(UE，User Equipment)向基站(eNB，Evolved Node B)发送信息的场景。其中，UE1例如为图3中的信源节点S1，UE2例如为图3中的信源节点S2，eNB例如为图3中的目的节点D。
可选的，在某一时隙t的前半时隙，本实施例的步骤如下：
步骤401：eNB发送包含对UE1的调度信息的下行控制信息(DCI，Downlink Control Information)，UE1接收包含调度信息的下行控制信息，UE2偷听包含调度信息的下行控制信息；
步骤402：eNB发送对UE1和UE2的本地信息的解码情况的HARQ指示，UE1偷听该HARQ指示，其中，需要说明的是，由于UE1和UE2的传输交替进行，因此，本次UE1传输时eNB发送的HARQ指示是针对上一次UE2传输的反馈，另外，由于本次UE2不需要传输，故UE2可不接收该HARQ指示；
步骤403：UE1根据下行控制信息中的调度信息的要求和HARQ指示，对信息进行编码和调制，在指定的时频资源上将信息发送给eNB；
步骤404：eNB在调度信息指定的时频资源上接收UE1发送的信息，同时，UE2在调度信息指定的时频资源上偷听UE1发送的信息；
步骤405：eNB对UE1发送的信息进行解码操作，同时，UE2对UE1发送的信息进行解码操作。
其中，本实施例的上述步骤，针对UE1和UE2交替进行。即在某一时隙t，eNB在前半时隙调度UE1发送信息，在后半时隙调度UE2发送信息。
可选的，本实施例步骤401中使用的包含对UE1的调度信息的下行控制信息，在原有下行控制信息格式0和格式4(DCI format 0/4)的基础上，将1比特的新数据指示(NDI，New Data Indicator)字段增加至2比特。其中，NDI字段的最高位(MSB，Most Significant Bit)指示UE1上一次发送的本地信息是否需要重传，NDI字段的最低位(LSB，Least Significant Bit)指示UE2上一次发送的本地信息是否需要重传。
本实施例步骤402中eNB发送的HARQ指示，包含2比特的数据。其中，该HARQ反馈的最高位指示上一次UE1发送的本地信息的解码情况，该HARQ反馈的最低位指示上一次UE2发送的本地信息的解码情况。
于本实施例步骤403中，UE1根据下行控制信息中调度信息的要求和HARQ指示，对信息进行编码和调制。图9为本发明实施例中，信源节点只获得HARQ指示时对步骤402中偷听得到的HARQ指示的处理示意图。如图9所示，包括以下几种情况：
1)若HARQ指示的最高位和最低位值都为NACK，则UE1发送网络编码后的数据，且数据包含重传的UE1的本地信息和重传的UE2的本地信息，使用非自适应重传；
2)若HARQ指示的最高位值为ACK，最低位值为NACK，则UE1发送网络编码后的数据，且数据包含新传的UE1的本地信息和重传的UE2的本地信息，使用非自适应重传；
3)若HARQ指示的最高位值为NACK，最低位值为ACK，则UE1仅重传UE1的本地信息，使用非自适应重传；
4)若HARQ指示的最高位和最低位值都为ACK，则UE1不做任何操作， 等待eNB发送的下行控制信息。
其中，上述提及的非自适应重传，表示UE1会根据最近一次的控制信息中的MCS对待发送的信息进行编码处理，在最近一次的控制信息所指示的无线资源PRB上发送信息。本实施例中的最近一次的控制信息，指的是eNB对UE1或UE2的控制信息，包括UE1接收到的eNB向UE1发送的控制信息和UE1偷听到的eNB向UE2发送的控制信息。
无论UE1是否获得HARQ指示，只要UE1同时收到eNB发送的控制信息，UE1会忽略HARQ指示而根据下行控制信息来确定下一次传输。图10为本发明实施例中，信源节点(如UE1)收到针对本信源节点(如UE1)的调度信息的下行控制信息时对步骤401中接收到下行控制信息中的NDI字段的处理示意图。如图10所示，包括以下几种情况：
1)若NDI最高位发生翻转，最低位没有发生翻转，则UE1发送网络编码后的数据，且数据包含新传的UE1的本地信息和重传的UE2的本地信息，UE1根据控制信息发送网络编码后的数据；
2)若NDI最高位和最低位都发生翻转，则UE1仅发送UE1的本地信息，且UE1的本地信息是新传，UE1根据控制信息发送新传的本地信息；
3)若NDI最高位没有发生翻转，最低位发生翻转，则UE1仅发送UE1的本地信息，且UE1的本地信息是重传，UE1根据控制信息发送重传本地信息，也即传统的自适应重传；
4)若NDI最高位和最低位都没有发生翻转，则UE1发送网络编码后的数据，且数据包含重传的UE1的本地信息和重传的UE2的本地信息，UE1根据控制信息发送网络编码后的数据。
此外，本发明实施例同样适用于在长期演进系统中，互为协作伙伴的中继节点(RN，Relay Node)向宿主基站(DeNB，Donor Evolved Node B)发送信息的场景。其中，RN1例如为图3中的信源节点S1，RN2例如为图3中的信源节点S2，DeNB例如为图3中的目的节点D。
在基于RN及DeNB的协作网络编码场景下的HARQ重传中，RN默认DeNB只发送最高位和最低位值都为ACK的HARQ指示，除此以外，RN和 DeNB所涉及的模块和步骤与UE和eNB所的模块和步骤相同。故于此不再赘述。
综上所述，本发明实施例通过在协作网络编码系统中引入HARQ重传技术的方法，利用HARQ技术保证协作网络编码传输的可靠性，弥补了单纯协作网络编码丢包的缺陷，提高了传输数据的解码率，从而提高了系统的总体性能。
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(例如处理器)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，例如通过集成电路来实现其相应功能，也可以采用软件功能模块的形式实现，例如通过处理器执行存储于存储器中的程序/指令来实现其相应功能。本发明不限制于任何特定形式的硬件和软件的结合。
本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的精神和范围，均应涵盖在本发明的权利要求范围当中。
工业实用性
上述技术方案将HARQ重传技术引入到协作网络编码的场景中，利用HARQ重传技术保证协作网络编码传输的可靠性，弥补了单纯协作网络编码因无线信道的时变性和多径衰落而丢包的缺陷，提高了目的节点对信源节点发送的信息的解码率，从而提高了系统的总体性能。

Claims (19)

  1. 一种基于协作网络编码场景的传输方法，包括：
    信源节点获取目的节点发送的对该信源节点与其协作节点的本地信息的传输指示；
    所述信源节点根据获得的所述传输指示，向目的节点发送自己的本地信息或网络编码后的数据。
  2. 如权利要求1所述的方法，其中：所述信源节点与其协作节点的本地信息的传输指示由控制信息和/或混合自动重传请求HARQ指示携带。
  3. 如权利要求2所述的方法，其中：
    所述控制信息包含2比特的新数据指示。
  4. 如权利要求2所述的方法，其中：所述混合自动重传请求HARQ指示包含2比特的确认ACK/不确认NACK指示。
  5. 如权利要求2所述的方法，其中：所述信源节点获取目的节点发送的对该信源节点与其协作节点的本地信息的传输指示包括：
    所述信源节点接收目的节点发送给该信源节点的控制信息；或者，
    所述信源节点监听目的节点发送给该信源节点的协作节点的混合自动重传请求HARQ指示；或者，
    所述信源节点接收目的节点发送给该信源节点的控制信息，并监听目的节点发送给该信源节点的协作节点的混合自动重传请求HARQ指示。
  6. 一种基于协作网络编码场景的传输方法，包括：
    目的节点向信源节点发送对所述信源节点与其协作节点的本地信息的传输指示；
    所述目的节点接收所述信源节点根据所述传输指示发送的自己的本地信息或网络编码后的数据。
  7. 如权利要求6所述的方法，其中：所述信源节点与其协作节点的本地信息的传输指示由控制信息和/或混合自动重传请求HARQ指示携带。
  8. 如权利要求7所述的方法，其中：所述控制信息包含2比特的新数据指示。
  9. 如权利要求7所述的方法，其中：所述混合自动重传请求HARQ指示包含2比特的确认ACK/不确认NACK指示。
  10. 一种位于信源节点的基于协作网络编码场景的传输系统，包括：
    信源节点获取模块，设置为获取目的节点发送的对所述信源节点与其协作节点的本地信息的传输指示；
    信源节点发送模块，设置为根据获得的所述传输指示，向目的节点发送所述信源节点的本地信息或网络编码后的数据。
  11. 如权利要求10所述的系统，其中：所述信源节点与其协作节点的本地信息的传输指示由控制信息和/或混合自动重传请求HARQ指示携带。
  12. 如权利要求11所述的方法，其中：所述控制信息包含2比特的新数据指示。
  13. 如权利要求11所述的方法，其中：所述混合自动重传请求HARQ指示包含2比特的确认ACK/不确认NACK指示。
  14. 一种位于目的节点的基于协作网络编码场景的传输系统，包括：
    目的节点发送模块，设置为向信源节点发送对所述信源节点与其协作节点的本地信息的传输指示；
    目的节点接收模块，设置为接收所述信源节点根据所述传输指示发送的该信源节点的本地信息或网络编码后的数据。
  15. 如权利要求14所述的系统，其中：所述信源节点与其协作节点的本地信息的传输指示由控制信息和/或混合自动重传请求HARQ指示携带。
  16. 如权利要求15所述的方法，其中：所述控制信息包含2比特的新数据指示。
  17. 如权利要求15所述的方法，其中：所述混合自动重传请求HARQ指示包含2比特的确认ACK/不确认NACK指示。
  18. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行 指令，所述计算机可执行指令用于执行权利要求1～5中任一项所述的方法。
  19. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行权利要求6～9中任一项所述的方法。
PCT/CN2015/096143 2015-05-21 2015-12-01 一种基于协作网络编码场景的传输方法及系统 WO2016184074A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510264284.X 2015-05-21
CN201510264284.XA CN106301673A (zh) 2015-05-21 2015-05-21 一种基于协作网络编码场景的传输方法及系统

Publications (1)

Publication Number Publication Date
WO2016184074A1 true WO2016184074A1 (zh) 2016-11-24

Family

ID=57319319

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/096143 WO2016184074A1 (zh) 2015-05-21 2015-12-01 一种基于协作网络编码场景的传输方法及系统

Country Status (2)

Country Link
CN (1) CN106301673A (zh)
WO (1) WO2016184074A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101848060A (zh) * 2010-05-12 2010-09-29 中国科学技术大学 一种自适应网络编码协作中继方法
CN102263626A (zh) * 2011-07-22 2011-11-30 新邮通信设备有限公司 一种无线中继网络中的数据重传方法和系统
CN103023628A (zh) * 2012-12-21 2013-04-03 北京邮电大学 基于网络编码的中继协作harq方法
US20130229975A1 (en) * 2012-03-01 2013-09-05 Telefonaktiebolaget L M Ericsson (Publ) Cooperative relaying and network coding in a cellular communications system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012159300A1 (zh) * 2011-06-27 2012-11-29 华为技术有限公司 基于网络编码的协作传输方法及系统、基站及中继节点
US20130148563A1 (en) * 2011-12-10 2013-06-13 Qualcomm Incorporated Apparatus and methods for management, configuration and control signaling of network coded harq in mobile communication systems
CN102427400B (zh) * 2012-01-04 2014-10-01 西安电子科技大学 网络编码正交调制协作harq控制系统与方法
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
CN104104482B (zh) * 2013-04-02 2018-05-22 上海诺基亚贝尔股份有限公司 配置增强的物理混合自动重传指示信道的方法
CN104243108B (zh) * 2013-06-08 2019-06-14 中兴通讯股份有限公司 上行混合自动重传请求反馈方法、装置和系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101848060A (zh) * 2010-05-12 2010-09-29 中国科学技术大学 一种自适应网络编码协作中继方法
CN102263626A (zh) * 2011-07-22 2011-11-30 新邮通信设备有限公司 一种无线中继网络中的数据重传方法和系统
US20130229975A1 (en) * 2012-03-01 2013-09-05 Telefonaktiebolaget L M Ericsson (Publ) Cooperative relaying and network coding in a cellular communications system
CN103023628A (zh) * 2012-12-21 2013-04-03 北京邮电大学 基于网络编码的中继协作harq方法

Also Published As

Publication number Publication date
CN106301673A (zh) 2017-01-04

Similar Documents

Publication Publication Date Title
US11617226B2 (en) System and method for UE fountain relay based network
JP7339943B2 (ja) 非地上通信システム
JP5345159B2 (ja) 中継チャンネルにおける通信を改善するための方法及び装備
TWI590614B (zh) 用於非期望下行子訊框之混合式自動重送請求-確認處理技術（二）
JP5009410B2 (ja) 移動局装置、無線通信方法および集積回路
JP5232896B2 (ja) リレーノードベースのワイヤレス通信システムにおける伝送
US8457059B2 (en) Transmission apparatus, reception apparatus, communication system and communication method using adaptive hybrid automatic retransmission request method
US20090262678A1 (en) Cooperative communications techniques
RU2554527C2 (ru) Способы и устройства в телекоммуникационной системе
US20120057451A1 (en) Method of retransmission for supporting mimo in synchronous harq
KR101681148B1 (ko) 무선통신 시스템 및 그의 ｈａｒｑ 운용 방법
US10630430B2 (en) System and method for dual-coding for dual-hops channels
CN108886436B (zh) 无线电网络节点、无线设备以及其中执行的方法
US20130322321A1 (en) Data transmission method, wireless communication system, destination node and relay node
SG175306A1 (en) Base stations, cellular communication systems, methods for controlling a base station, and methods for controlling a cellular communication system
WO2016184074A1 (zh) 一种基于协作网络编码场景的传输方法及系统
JP5719460B2 (ja) 移動局装置、無線通信方法および集積回路
WO2024065490A1 (en) Methods, system, and apparatus for joint error correction coding of a self-decodable payload
US20220368466A1 (en) Method and device for sending harq-ack codebook and method and device for receiving harq-ack codebook
KR20190080701A (ko) 무선 통신 시스템에서 데이터 송수신 방법 및 장치
JP2012222519A (ja) 無線通信装置及び再送制御方法
JP2010130176A (ja) 通信装置及び再送制御方法

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: 15892448

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: 15892448

Country of ref document: EP

Kind code of ref document: A1