Average energy efficiency maximization power distribution method in delay insensitive D2D communication system

A delay-insensitive, communication system technology, applied in the field of mobile communication equipment and equipment adaptive resource allocation, which can solve problems such as interference

Active Publication Date: 2019-09-24
SOUTHEAST UNIV
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Problems solved by technology

[0012] Purpose of the invention: When the wireless communication network supports D2D communication, the interference caused by the multiplexing of same-frequency resources, aiming at the QoS guarantee of cellu

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  • Average energy efficiency maximization power distribution method in delay insensitive D2D communication system
  • Average energy efficiency maximization power distribution method in delay insensitive D2D communication system

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Embodiment Construction

[0066] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0067] image 3 is the change of D2D link energy efficiency with the average QoS constraint condition of cellular users under different channel models. The system parameters used in the simulation are: the transmit power of the base station is 46dBm; D2D users share downlink channel resources with cellular users, and the downlink channel resources of a cellular user can only be shared with a pair of D2D users. The power loss of the hardware circuit of the D2D user pair is 2×50dBm, and the maximum average transmit power is 20dBm; the radius of the cell is 500m, the distance between the cellular user and the sending user in the D2D link is 400m, and the distance between the sending user and the receiving user in the D2D link The distance between the base station and the receiving user in the D2D link is 350m, and the distance b...

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Abstract

The invention discloses an average energy efficiency maximization power distribution method in a delay insensitive D2D communication system. The average energy efficiency maximization power distribution method comprises the following steps: firstly, a base station selecting cellular users through a scheduling algorithm and sharing frequency resources of the cellular users to a selected D2D link for use; then the dispatched and activated cellular users and D2D users feeding channel state information back to the base station; then, the base station calculating a power distribution scheme which enables the average energy efficiency of the D2D link insensitive to delay to be optimal according to the channel state information uploaded by the cellular users and the D2D users; and finally, the D2D link sending end completing data transmission according to the power distribution scheme. The method can be effectively applied to an actual scene, the average energy efficiency of cell edge users insensitive to delay is effectively improved according to the optimal power distribution scheme calculated by the base station, the D2D terminal power consumption is reduced, meanwhile, the interference of the D2D terminal power consumption to cellular users is restrained, and then the average spectrum utilization rate is improved.

Description

technical field [0001] The invention belongs to the field of mobile communication equipment and device (D2D) self-adaptive resource allocation, and in particular relates to a power optimization allocation method for delay-insensitive D2D communication to obtain maximum average energy efficiency. Background technique [0002] In recent years, with more and more mobile devices accessing the mobile communication network, the amount of information in the mobile communication network has shown explosive growth, especially the monthly mobile terminal information download is expected to increase by 8 times. This puts higher demands on the capacity of the mobile communication network. Therefore, 5G urgently needs to introduce new technologies into the existing network. Among them, device-to-device communication (Device-to-Device, D2D) is widely regarded as a 5G technology that can effectively increase system capacity. [0003] D2D communication means that in a cellular network, whe...

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Application Information

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IPC IPC(8): H04W4/70H04W72/08H04W72/04
CPCH04W4/70H04W72/0473H04W72/542Y02D30/70
Inventor 史锋峰蔡欢赵春明
Owner SOUTHEAST UNIV
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