Unlock instant, AI-driven research and patent intelligence for your innovation.

Multi-relay selection method based on node classification and water injection power allocation

A technology for water injection power distribution and node classification, which is applied in diversity/multi-antenna systems, location diversity, advanced technologies, etc., and can solve problems such as compromising user experience

Inactive Publication Date: 2018-11-09
GUANGXI NORMAL UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, existing algorithms ignore some problems in real-world applications, for example, relay links with good channel conditions are selected more frequently, and when the relay device is a battery-powered user equipment, the relay leads to rapid energy consumption , is unbearable for users and will seriously damage user experience; secondly, when considering fair relay selection, the starting point for considering fair relay selection should be different for different types of relay nodes; in addition, There is a problem of how to reasonably allocate power in multi-relay selection to improve system capacity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] The cooperative communication system consists of 1 source node, M relay nodes and 1 destination node, from which L (1≤L≤M) relay nodes are selected for data forwarding, and M relay nodes constitute the relay node set S relay . The sum of the power used by the source node and the selected L relay nodes for relaying a certain service is P T , the transmit power of the source node is (1-α)P T , the sum of the transmit powers of the selected L relay nodes is αP T , using the water injection power allocation algorithm to allocate the power of each relay node. According to the different power supply sources of the equipment, the relay nodes are divided into battery-powered relay nodes and grid-powered relay nodes, so there can be three scenarios in the system, namely: (1) There are only battery-powered relay nodes; (2) There are only grid-powered relay nodes; (3) There are both battery and grid-powered relay nodes. remember That is, take the maximum value of 0 and x, Mi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a multi-relay selection method based on node classification and water injection power allocation. The method comprises the steps that in the arbitrary combination of a number of relay nodes in a system, when only the relay node of battery power supply exists in the combination, a value is calculated; when only the relay node of power grid supply exists in the combination, a value is calculated; when the relay nodes of battery power supply and power grid supply exist in the combination at the same time, a value is calculated for the relay node of battery power supply, and a value is calculated for the relay node of power grid supply, and the sum of two values is used as the value of the combination; and the relay node in the combination corresponding to the maximum value is selected as a selected relay node. According to the invention, power allocation is carried out in multi-relay selection; allocated power is used as to allocate signal to noise ratio weight to the relay node of battery power supply; for the relay nodes of battery power supply and power grid supply, the fairness of relay selection is considered from the aspects of power allocation and nodal load; and the network life cycle is prolonged.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and in particular relates to a multi-relay selection method based on node classification and water injection power distribution. Background technique [0002] In a cooperative communication system, relay selection can be divided into single relay selection and multi-relay selection according to the number of participating cooperative relay nodes. Multi-relay selection can constitute a virtual MIMO effect, and it is a communication method that can realize performance similar to MIMO system. Relevant documents have disclosed a multi-relay selection method based on residual energy. This method proposes to select relay nodes by considering the residual energy and channel state of relay nodes at the same time. There are also literatures disclosing a multi-relay selection based on a genetic algorithm in a DF cooperative network, which achieves better communication performance, but has hig...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/02H04W40/22
CPCH04B7/026H04W40/22Y02D30/70
Inventor 肖琨周忠瑶廖丽丽
Owner GUANGXI NORMAL UNIV