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A Selective Cooperation Method Based on Packet Aggregation in Multi-source and Multi-Destination Network

A multi-target and network technology, applied in network topology, diversity/multi-antenna system, location diversity, etc., can solve the problems of data packet protocol design and optimization in wireless sensor networks, so as to improve system spectrum utilization and reduce system performance. consumption effect

Active Publication Date: 2021-09-07
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0003] However, the above studies are all aimed at specific network scenarios, and there is little research on the wireless sensor network with M source nodes and N target nodes (M>N) that widely exists in practice, and there is no research on the data packet in the wireless sensor network. Minor features for protocol design and optimization

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  • A Selective Cooperation Method Based on Packet Aggregation in Multi-source and Multi-Destination Network
  • A Selective Cooperation Method Based on Packet Aggregation in Multi-source and Multi-Destination Network
  • A Selective Cooperation Method Based on Packet Aggregation in Multi-source and Multi-Destination Network

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[0031]The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Such as figure 1 As shown, it is a system model of selection cooperation based on packet aggregation under the multi-source multi-destination network of the present invention.

[0033] In the actual wireless sensor network, the multi-source and multi-target network selection and cooperation method based on packet aggregation is used to improve transmission reliability and energy saving and speed-up. Suppose the network has M source nodes, respectively denoted as s 1 ,s 2 ,...,s M , and N target nodes, denoted as d 1 , d 2 ,...,d N , the source nodes with the same target node cooperate with each other. Each channel is independent of each other and obeys the Rayleigh distribution, the source node s i (i=1,2,...,M) and target node d k The instantaneous channel gain between (k=1,2,…,N) is expressed as The instantaneous channel g...

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Abstract

The invention relates to a method for selecting and cooperating based on packet aggregation under a multi-source and multi-target network, belonging to the field of cooperative communication. node, M>N) network, by constructing an association matrix between source and destination nodes, the multi-source multi-destination network of M>N is converted into N multi-source single-destination networks; according to the characteristics of small data packets transmitted by network nodes, Packet aggregation strategy is adopted for data transmission of N multi-source single-destination networks, and a selective cooperation method based on packet aggregation is proposed. The present invention effectively improves the reliability of the system, reduces the energy consumption of the system, improves the frequency spectrum utilization rate through the mutual cooperation and data packet aggregation among the source nodes with the same target node, and has good practical application value.

Description

technical field [0001] The invention belongs to the field of cooperative communication, and relates to a selection cooperation method based on packet aggregation under a multi-source multi-target network. Background technique [0002] Selecting cooperative communication as an important branch of single-relay cooperative technology has always been a research hotspot in the field of cooperative communication. The basic idea is to select an optimal relay to perform cooperative forwarding tasks without requiring all relays to participate in the cooperative transmission process, so it has the characteristics of high reliability and low complexity, and is very suitable for application in wireless sensor networks. At present, there have been some related researches on selective cooperation technology, mainly focusing on the derivation and analysis of selective cooperation performance and its application in different network scenarios, such as: single-source single-target network, m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/22H04W40/10H04W40/12H04W52/02H04W72/12H04B7/026H04W84/18
CPCH04B7/026H04W40/10H04W40/12H04W40/22H04W52/02H04W84/18H04W72/535Y02D30/70
Inventor 李敏王平山王凯莉
Owner CHONGQING UNIV OF POSTS & TELECOMM
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