Clustering System Switching Method Based on Clustering Multicast

A cluster system and clustering technology, applied in the field of wireless communication, can solve problems such as large energy consumption

Active Publication Date: 2020-10-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problem that the auxiliary handover method based on D2D relay in the prior art will cause large energy consumption and introduce additional signaling overhead and delay, and proposes a clustering multicast-based Cluster system switching method

Method used

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  • Clustering System Switching Method Based on Clustering Multicast
  • Clustering System Switching Method Based on Clustering Multicast
  • Clustering System Switching Method Based on Clustering Multicast

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Embodiment Construction

[0035] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0036] The network scenario for the application of the present invention is: the cluster users are all in the same cell and receive data through a multicast channel; the cluster users move in random directions and speeds, and there are no users of the same group in the surrounding adjacent cells, that is, if the users move to other cells, Other cells need to allocate multicast resources for it. There are two ways for cluster users to move independently and collectively. One or more users who move to the edge of the cell can apply to establish a D2D cluster with nearby users, and forward downlink service data to them through the cluster head to ensure that the cluster users are in the handover process. SNR (Signal Noise Ratio, signal-to-noise ratio) and data rate in.

[0037] Based on the above ideas, the present invention provides a cluster system switc...

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Abstract

The invention discloses a cluster system switching method based on clustering and multicasting, adopting clustering and D2D multicasting to provide relays for collective switching of cluster users, ensuring the continuity of services of cluster users during the switching process, and improving the transfer rate. The present invention adopts the cluster head selection and clustering algorithm based on the analytic hierarchy process, incorporates the mobility and remaining power of cluster users into decision-making related factors, comprehensively measures D2D coverage, relative speed value and remaining power, and obtains the terminal with the highest comprehensive evaluation index As a cluster head, it can effectively reduce the number of cluster heads, extend the time of D2D communication, make the network cluster structure more stable, and be more conducive to the continuity of services and high transmission rate of cluster users during the switching process.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to the design of a cluster system switching method based on clustering multicast. Background technique [0002] The trunking communication system is a dedicated wireless communication system designed and developed to meet the command and dispatch of industry users and the needs of specific industry applications. In the trunking communication system, a large number of users share a small number of wireless channels for command and dispatch, which is a multi-functional and high-performance wireless communication system. [0003] The new generation of digital trunking communication system starts to rely on the mature public network communication system, which not only inherits the excellent transmission speed and quality of the public network, but also gives full play to the characteristics of the trunking system itself, so it has achieved further development...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/06H04W28/26H04W36/00H04W40/32
CPCH04W4/06H04W28/26H04W36/0011H04W40/32
Inventor 冷甦鹏刘习儒杨宁段景山
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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