An improved clustering method based on double adaptive clustering range and inter-cluster communication mode

Abstract

The invention discloses a cluster range and inter-cluster communication mode dual self-adapting improved cluster method. In each cluster, at most three cluster heads, namely a master cluster head MCH, a slave cluster head SCH and a fusion cluster head FCH are responsible for management, wherein the FCH is responsible for intra-cluster data aggregation and fusion, the MCH and the SCH constitutes a cooperative communication node for being responsible for inter-cluster communication, and the SCH determines whether to participate in the inter-cluster communication according to the inter-cluster communication environment. The cluster method comprises forming the cluster, adjusting the intra-cluster transmitting power, adjusting the inter-cluster transmitting power and selecting a communication mode. According to the method, the probability that the node with very large residual energy value and very small maximal communication coverage area becomes the cluster head is effectively reduced, and the cluster range can be self-adaptively adjusted according to the change of the maximal communication coverage area distribution of the node in the network, thus ensuring that the clusters always communicate with one another; and the load of the MCH in the cluster is shared by introducing the FCH, and thus the life of the cluster structure is greatly improved with slightly increased cluster forming control overhead.

Description

technical field [0001] The invention belongs to the field of computer network application and virtual MIMO communication, and relates to an improved clustering technology in which multi-cluster head intra-cluster load sharing, clustering range and inter-cluster communication mode can adapt to changes in communication environment conditions. Background technique [0002] Multiple-Input Multi-Output (MIMO) technology can increase wireless network capacity, reduce energy consumption, and improve wireless network coverage quality. However, wireless devices in the network must be equipped with multiple antennas to take advantage of these advantages. Small wireless devices such as sensors are mostly unable to meet such requirements. Therefore, researchers have proposed virtual MIMO technology, which simulates the effect of real MIMO through the cooperative transmission and reception of multiple single-antenna devices. [0003] There are usually four communication modes that are c...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an improved clustering method with dual adaptive clustering range and inter-cluster communication mode, that is, ICV-MIMO (Improved Clustering scheme for Virtual MIMO-based topology construction), which can not only minimize the total energy consumption (that is, transmit energy consumption and circuit energy consumption) during inter-cluster communication, but also improve the energy balance of intra-cluster communication and adaptively determine the cluster range

Images