Self-organizing network route selection method based on MIMO

Abstract

The invention discloses a router select method under a self-organizing network based on MIMO link for solving problem that the present router select principle can not use a new link characteristic on MIMO condition. The router select steps includes: (1) enlarging the link characteristic: dividing the link into a diversity link, a composite link and a link combined with diversity modulation; (2) designing measurement principle: considering various factor of a router performance for designing a measurement principle Ri=k / taui+T; (3) demarcating a measurement value: confirming a unknown parameter on the measurement principle Ri according with the link factual condition and obtaining Ri value, accordingly, demarcating the measurement value on the link; (4) router selecting: calculating measurement summation of Ri of the router, selecting a minimum router of summation of Ri as the router. The method can select optimized router by designing a select router principle more suitable for MIMO link which increases the router agreement performance obviously.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a route selection method, which is used in a route protocol in an ad hoc network. Background technique [0002] With the continuous development of various wireless communication services and broadband data services, wireless resources, especially spectrum resources, are becoming more and more scarce. How to efficiently use these limited communication resources has become the focus of wireless communication technology development, so use Multi-antenna MIMO technology emerges as the times require. Studies have shown that MIMO technology can make full use of space resources, effectively resist the influence of wireless channel fading without increasing system bandwidth and total antenna transmission power, and greatly improve system spectrum utilization and channel capacity. [0003] In addition to making full use of communication resources, the future mobile communi...

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Problems solved by technology

However, although the speed of the first few links is R, the speed of the last link is r, which becomes a bottleneck, so that the packets sent before can only be stored in the cache, and if there is no cache, they will be directly discarded, so , the path rate obtained by the MIR routing criterion is r, but it selects too many multiplexing links, which increases the number of hops and reduces the delay performance; the second route selects three links with rates all r On the surface, its path rate is also r, which is the same as that of MIR. However, in fact, its hops are smaller than MIR routes, and the access delay is greatly reduced, which improves the delay performance. If it is converted into traffic , its path rate will be much greater than the MIR

[0015] (3) Since the protocol only uses diversity to increase the communication range when selecting routes, and ignores the fact that the modulation method can be combined when using diversity, this criterion does not achieve a compromise between the extension of the transmission range and the increase of the link rate

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