A method for optimizing energy consumption of d2d communication under single cell

An optimization method and cellular technology, applied in the direction of reducing energy consumption, wireless communication, sustainable communication technology, etc., can solve problems such as increased energy loss, increased circuit energy loss, and reduced transmission rate

Inactive Publication Date: 2019-08-13
XIAMEN UNIV
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Problems solved by technology

For a given rate requirement, as the transmission rate increases, the required transmission time will become smaller, but the transmission energy loss will still increase, so in order to reduce the energy loss, the transmission rate needs to be reduced
However, as the transmission rate decreases, the required transmission time will become longer and the energy loss of the circuit will increase

Method used

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  • A method for optimizing energy consumption of d2d communication under single cell
  • A method for optimizing energy consumption of d2d communication under single cell
  • A method for optimizing energy consumption of d2d communication under single cell

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Embodiment Construction

[0041] Such as figure 1 As shown, a base station serves the surrounding terminal equipment. There are two types of terminals, one is the terminal that communicates with the base station, that is, the cellular terminal CUE, and the other is the terminal that directly communicates with other terminals through D2D technology, that is, D2D terminal. The bandwidth of the system is allocated to all cellular terminals (CUE). It is assumed that there are D2D transmission links in the system that are less than the number of cellular links. The cellular terminals and D2D terminals randomly exist in any position in the cell. The D2D transmission chain channels share uplink spectrum resources of cellular links, and each D2D transmission link only shares uplink spectrum resources of one cellular link at most. Cellular terminals send data to the base station through TDMA. Since the number of D2D transmission links is less than For the number of cellular links, some of the cellular links mu...

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Abstract

The present invention provides an energy consumption optimization method for D2D communication under a single cell, and proposes a D2D user resource allocation strategy based on bipartite graph optimal matching. The link is paired with the D2D transmission link to optimize the energy consumption of the system; experiments show that the optimal allocation strategy based on the Hungarian algorithm can reduce energy loss by 40% compared with the maximum power transmission, and with the increase of the number of users , the energy saving is more obvious; furthermore, compared with some common distance-based allocation strategies such as the nearest allocation, the farthest allocation, and random allocation, the optimal allocation strategy has the lowest energy consumption among various allocation strategies, and can replace the traditional maximum Power transfer schemes and schemes for resource allocation based on distance.

Description

technical field [0001] The invention belongs to the field of wireless communication, and relates to an energy consumption optimization method for D2D communication under a single cell. Background technique [0002] As one of the key technologies of next-generation wireless communication, D2D (terminal direct to device to device) communication can provide higher transmission rate, increase system throughput, improve spectrum utilization efficiency, reduce the burden of cellular base stations, and enhance system stability, etc. . [0003] The energy consumption problem of D2D communication is closely related to the resource allocation problem of D2D, and the energy consumption under different allocations is very different. The distance-based resource allocation strategy provides a set of allocation criteria for resource allocation, which can meet the transmission requirements of cellular users and D2D users, but will cause a large waste of energy. If a simple maximum power t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/02H04W72/04
CPCH04W52/02H04W72/0473H04W72/53Y02D30/70
Inventor 林世俊刘文涛石江宏
Owner XIAMEN UNIV
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