A method for maximizing average energy efficiency power allocation in a delay-insensitive d2d communication system

A delay-insensitive, communication system technology, applied in the field of mobile communication equipment and equipment adaptive resource allocation, can solve problems such as interference, achieve the effect of increasing reachable rate, improving average energy efficiency, and improving spectrum efficiency

Active Publication Date: 2022-02-22
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 cellular users and the energy efficiency optimization of D2D communication, the present invention provides a delay-insensitive D2D communication with the highest average energy efficiency. power distribution method

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  • A method for maximizing average energy efficiency power allocation in a delay-insensitive d2d communication system
  • A method for maximizing average energy efficiency power allocation in a delay-insensitive d2d communication system
  • A method for maximizing average energy efficiency power allocation in a delay-insensitive d2d communication system

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[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 present invention discloses a method for maximizing average energy efficiency power allocation in a delay-insensitive D2D communication system, which is carried out as follows: firstly, a base station selects a cellular user through a scheduling algorithm and shares its frequency resources with a selected D2D link; then The scheduled and activated cellular users and D2D users feed back channel state information to the base station; then the base station calculates the optimal power allocation scheme for the average energy efficiency of the D2D link that is not sensitive to delay according to the channel state information uploaded by the cellular users and D2D users ; Finally, the sending end of the D2D link completes the data transmission according to this power allocation scheme. The present invention can be effectively applied in actual scenarios. According to the optimal power allocation scheme calculated by the base station, the average energy efficiency of cell edge users that are not sensitive to delay can be effectively improved, and the power consumption of D2D terminals can be reduced while restraining its interference to cellular users. , thereby increasing the average spectrum utilization.

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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Patent Type & Authority Patents(China)
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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