Interference sensing wireless mesh network peer-to-peer (P2P) resource distributing method

A wireless and resource technology, applied in electrical components, transmission systems, etc., can solve the problems that affect file transmission and download path calculation, affect serverpeer selection, wireless network interference, etc., and achieve the effect of solving P2P resource distribution problems.

Inactive Publication Date: 2012-06-13
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Secondly, the existence of wireless network interference not only affects the selection of server peers in the P2P system, but also affects the calculation of file transfer download paths

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  • Interference sensing wireless mesh network peer-to-peer (P2P) resource distributing method
  • Interference sensing wireless mesh network peer-to-peer (P2P) resource distributing method
  • Interference sensing wireless mesh network peer-to-peer (P2P) resource distributing method

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Embodiment Construction

[0028] The interference-sensitive P2P resource distribution problem solved by the present invention can be described as a restricted optimization problem, that is, to find a group of disjoint paths connecting multiple server peers and multiple client peers, and the end-to-end delay of each path Both are less than the given delay period W.

[0029] Assume that each hop link has a hop delay. Then the packet transmission delay on a path can be calculated as the sum of the single-hop delays of all links on the path. Therefore, the above constrained optimization problem can be described as a VMLBDP (Variation of Maximum Length-Bounded Disjoint Path problem): Given a directed graph G=(V, E), there are k nodes s in the graph 1 ,...,s k Represents the source node, m nodes d 1 ,...,d m Represents the destination node, each edge has a different weight (single hop delay), the goal is to find the source node s i , (1≤i≤k) to target node d j (1≤j≤m) the maximum number of disjoint pat...

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Abstract

The invention discloses an interference sensing wireless mesh network peer-to-peer (P2P) resource distributing method. A wireless mesh network comprises a multi-hop wireless network; the multi-hop wireless network comprises a plurality of network nodes which perform communication with one another; the network nodes comprise a plurality of nodes with a request file, namely server peers and a plurality of nodes for downloading requested files. Namely client peers perform communication with the server peers through multiple hops. In the multi-hop wireless network with the server peers, a cooperated resource distributing method is designed. Best resource downloading performance can be provided to a plurality of client peers by the method combining peer selection and routing, namely highest network gathering throughput and limited network downloading time delay are endowed to the clients; and the problem of distribution interference of sensitive P2P resources is solved.

Description

technical field [0001] The invention relates to the field of wireless network and mobile computing, in particular to an interference-aware wireless mesh network P2P resource distribution method. Background technique [0002] Multi-hop wireless mesh networks support many potential applications, such as broadband Ihternet access in the last mile, distributed file backup and video surveillance, etc. Therefore, multi-hop wireless mesh networks have attracted more and more attention from researchers. Wireless networks have limited bandwidth. In order to improve the service quality of services and applications in wireless networks, network users and researchers hope to use new technologies to speed up network downloads, such as the use of P2P technology to support multiple servers with files. Peer nodes cooperate to transfer files to improve the file download rate under P2P. [0003] However, compared with the P2P distribution system of the wired network, the wireless network has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
Inventor 文吉刚谢鲲李仁发
Owner HUNAN UNIV
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