A Collaborative Method for Two-way Relay Based on Network Coding

A two-way relay, network coding technology, applied in the direction of location diversity, space transmit diversity, radio transmission system, etc., can solve the problem of not considering the cooperative node to cooperate with two source nodes, not maximizing the advantages of cooperative communication, not considering the two-way and cooperation Node utilization, etc.

Inactive Publication Date: 2018-06-15
HEFEI UNIV OF TECH
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Problems solved by technology

[0003] Cooperative communication at the physical layer has been extensively studied, but only physical layer cooperation cannot maximize the advantages of cooperative communication. The most critical is the MAC layer protocol, which needs to be further designed for the MAC protocol to improve system performance.
The research of CoopMAC (cooperative MAC) only considers the problem of relaying. The idea is simple and clear, and it is compatible with the traditional 802.11 protocol, but it does not consider the use of two-way and cooperative nodes.
In the two-way relay network, only the relay node relays and forwards the two source nodes, without considering the coordination of the two source nodes by the cooperative node

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  • A Collaborative Method for Two-way Relay Based on Network Coding
  • A Collaborative Method for Two-way Relay Based on Network Coding
  • A Collaborative Method for Two-way Relay Based on Network Coding

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Embodiment Construction

[0043] A cooperative method of two-way relay based on network coding, which is applied by two source nodes S 1 and S 2 , a relay node R and n cooperative nodes H={H 1 ,H 2 ,...,H i ,...,H n} In the wireless network environment composed of H i Indicates the i-th cooperative node; 1≤i≤n; define two source nodes S 1 and S 2 The transmitted data packet is a relay packet; define the data packet generated by the relay node R itself as a non-relay packet; suppose the source node S 1 and S 2 m frames of data need to be transmitted between them, recorded as F={F 1 ,F 2 ,...,F j ,...,F m}; F j Indicates the data of the jth frame; 1≤j≤m; the specific introduction is as follows:

[0044] (1) Establish a system model: such as figure 1 As shown, the source nodes at both ends are S1 and S2 respectively, and they cannot directly communicate with each other, and the data packets can only be forwarded through the relay node R. because figure 1 In this system, the system is a two...

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Abstract

The invention discloses a cooperation method for a bidirectional relay based on network coding, wherein two source nodes mutually exchange information through a relay node, a cooperation node cooperates the source nodes for transmission, and by means of the coding of the relay node on a data packet and the cooperation of the cooperation node, a certain gain increase is obtained. The method provided by the method can be used for improving the network performance and reducing the complexity.

Description

technical field [0001] The invention belongs to the field of relay system cooperation protocol design in wireless communication, and specifically relates to a network coding-based cooperation method in a two-way relay system. Background technique [0002] In wireless communication networks, multimedia services are increasing day by day, and people are paying more and more attention to large-capacity and high-speed mobile communications. However, due to the limitation of bandwidth and transmission power, coupled with the influence of factors such as multipath fading and Doppler frequency shift in mobile communication, it is difficult to obtain ideal transmission rate and communication quality. In order to solve the bottleneck problem of wireless channel capacity, people put forward the concept of cooperative communication, which can obtain diversity gain and improve system performance without increasing hardware complexity. [0003] Cooperative communication at the physical ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/02H04B7/08
CPCH04B7/024H04B7/0802
Inventor 周清峰陈诚彭敏
Owner HEFEI UNIV OF TECH
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