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MAC layer cooperative power allocation method

A distribution method and power technology, applied in power management, wireless communication, electrical components, etc., can solve problems such as difficult to adapt to the network, difficult to determine the total power, etc., to achieve the effect of extending the life span

Inactive Publication Date: 2018-06-12
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In ad-hoc, when the surrounding environment changes rapidly, it is difficult to determine the total power required by the system. Based on the optimal allocation algorithm given under the condition of maximum total transmit power, it is difficult to adapt to the network that changes over time

Method used

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  • MAC layer cooperative power allocation method
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Experimental program
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Embodiment Construction

[0036] like figure 1 As shown, it is a system diagram applicable to the present invention, the total power consumed by the system in the cooperation process should include the sum of the power consumed by the source node, the relay node, and the destination node to send and receive data packets, using P d Indicates the power consumed by the destination node waiting, receiving signals, and feedbacking control packets during the cooperation process. Because the power consumed by waiting and receiving signals is relatively low compared to transmitting signals, it can be regarded as a fixed value, so the total power consumed by the system during cooperation for:

[0037] P tot = ρ sr (P s +P d )+(1-ρ sr )(P s +P r +P d )

[0038] =P s +(1-ρ sr ) P r +P d

[0039] where P s ,P r denote the transmit power allocated to source node s and relay node r respectively, ρ sr Indicates the outage probability from the source node to the relay node s→r:

[0040]

[0041] i...

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Abstract

The invention discloses an MAC layer cooperative power allocation method, belonging to the field of MAC layer cooperative communication. In the case that the conditional probability is limited, the scheme of the invention performs optimized allocation on the transmission power of a source node and a relay node, and the power consumption of the system can be further reduced. From the perspective ofthe quality of network services, that is, when the outage probability is limited, an optimal total power allocation scheme is provided in consideration of the cooperation failure in actual cooperation, that is, in the case that no suitable relay node exists. The scheme of the invention is beneficial to extending the lifetime of the nodes on the basis of ensuring the required QoS.

Description

technical field [0001] The present invention relates to the technical field of cooperative communication, in particular to a MAC layer cooperative power allocation method. Background technique [0002] For wireless mobile communications, the energy of nodes comes from batteries, so in order to prolong the life of nodes, it is necessary to use the minimum power consumption as much as possible under the specified Qos. Therefore, it is of great significance to study the distribution algorithm of source node and relay node transmit power. Power allocation optimization is usually based on a certain performance index, such as: SNR, SER, OP, MI, etc. Before power allocation, it is necessary to deduce the performance index of a certain aspect of the system. Based on the performance analysis of the cooperative system, an optimization algorithm is used to optimize the power allocation between the source and relay nodes. In ad-hoc, when the surrounding environment changes rapidly, it...

Claims

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Application Information

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IPC IPC(8): H04W52/26H04W72/04
CPCH04W52/265H04W72/0473
Inventor 陈明张祥王银露
Owner SOUTHEAST UNIV
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