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Multithread cooperation routing method for sensing interference

A multi-hop cooperative and routing technology, applied in the field of interference-aware multi-flow cooperative routing

Active Publication Date: 2014-11-12
HUNAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

It can be seen that how to perform relay selection to reduce the interference between links in a wireless cooperative network is extremely challenging.

Method used

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  • Multithread cooperation routing method for sensing interference
  • Multithread cooperation routing method for sensing interference
  • Multithread cooperation routing method for sensing interference

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Embodiment Construction

[0037] The present invention calculates the available alternative channel set FCH (i, j) between two nodes i and j according to the following steps:

[0038] 1) If the number of node i’s working channel set CH(i) is less than the number of interfaces M, there are still idle interfaces for arbitrarily allocating channels, so node i can use the working channel set ACH(i) to take all the orthogonal channels, That is, ACH(i)={ch 1 ,ch 2 ,...,ch N}, otherwise the set of available working channels is equal to the set of working channels itself: ACH(i)=CH(i), similarly calculate the set of available working channels ACH(j) of node j;

[0039] 2) Then the candidate channel set FCH(i,j) of link (i,j) is FCH(i,j)=ACH(i)∩ACH(j)-{ch 1}. The present invention calculates the interference-aware cooperative routing index of the link between any two adjacent nodes i and j (i, j) according to the following steps:

[0040] 1) For any channel ch w ∈FCH(i,j), calculate the maximum available ...

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Abstract

The invention discloses a multithread cooperation routing method for sensing interference. According to the research on the method that cooperative transmission and direct transmission can be adopted among the nodes in a multi-hop cooperative wireless network, through combination of relay selection and channel distribution, the problem of cooperative routing sensitive in interference is researched, and a distributed and cooperative routing method design is provided. According to the method, in the process of building cooperative routing, channel distribution, optimal transmission mode selection and optimal cooperation node selection are finished. By means of the method, the optimal cooperative routing with the least interference is selected for multiple data flows in the network, and meanwhile, reasonable distribution of multiple channels in the wireless network in the multiple data flows is determined, so that end-to-end handling capacity of the network data flow is maximized, and the network delay is lowered.

Description

technical field [0001] The present invention relates to the field of wireless networks, in particular to a wireless network supporting cooperative communication technology, in particular to an interference-aware multi-flow cooperative routing method. Background technique [0002] Compared with the MIMO technology, the Cooperative Communication technology (Cooperative Communication) at the physical layer is a space diversity technology suitable for single-antenna users. It takes advantage of the broadcast characteristics of wireless channels to allow single-antenna terminal devices to share their physical resources for communication in a multi-user environment, forming a virtual antenna array. Devices participating in cooperative communication can forward information to each other, and multiple copies of the same information can reach the receiving end through mutually independent wireless channels, thereby obtaining space diversity gain—cooperative diversity gain. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/16
Inventor 谢鲲李卉何施茗文吉刚
Owner HUNAN UNIV
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