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D2D communication dynamic relay selection method based on social relation

A social relationship and dynamic technology, applied in the field of mobile communication dynamic networking, to achieve long-term performance optimization, stability and high efficiency

Active Publication Date: 2019-04-09
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

In the case where the long-term performance of the system is required to be optimal, because the state at the previous moment may affect the optimization choice at the next moment, the traditional instantaneous static optimization analysis method cannot solve such problems well

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  • D2D communication dynamic relay selection method based on social relation
  • D2D communication dynamic relay selection method based on social relation
  • D2D communication dynamic relay selection method based on social relation

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Embodiment Construction

[0049] The technical solution of the present invention will be described in detail below with reference to the drawings and examples:

[0050] In this example, assume that the cell radius is 500m, the number of edge cell users N=10, and the number of relay devices M=20; the edge cell user distribution range is [400,500]m away from the central base station, and the relay D2D pair device distribution range is [ 100,300]m, the communication distance range of the same D2D pair transceiver device is [50,100]m; cellular user transmit power spectral density Channel bandwidth B C =0.18MHz, the maximum transmission power of D2D relay equipment p d =23dBm, background noise power spectral density N 0 = -174dBm / Hz, the channel model adopts Log-Normal Shadowing Model, and the data volume per frame is Q i [r] Obeys the Poisson distribution with a mean value of 1000kbps; the user movement model adopts the Gauss-Markov Mobile Model; the social relationship between edge cellular users and relay no...

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Abstract

The invention belongs to the technical field of mobile communication dynamic networking, and particularly relates to a D2D communication dynamic relay selection method based on social relations. The invention relates to theoretical frameworks such as D2D relay, Lyapunov Optimization, energy efficiency and the like. Based on the social relation, the present invention proposes an energy efficiency benefit function that comprehensively considers the effects of the physical layer and the social layer in an orthogonal frequency division multiple access (OFDM) uplink scenario, and increases the timeaverage minimum rate constraint, using the Lyponov Optimization optimization framework, so as to analyze a dynamic optimization problem under this long-term nonlinear constraint. Compared with a traditional static optimization target relay selection scheme, the method achieves better balance between the physical performance and the social relation of the system, and is more stable and efficient in long-term performance optimization.

Description

Technical field [0001] The invention belongs to the technical field of mobile communication dynamic networking, and specifically is a D2D communication dynamic relay selection method based on social relations. The present invention relates to theoretical frameworks such as D2D relay, Lyapunov Optimization, and Energy Efficiency (EnergyEfficiency). Background technique [0002] D2D (Device-to-Device) communication technology has become one of the prospective technologies for the next generation of cellular mobile communication systems to cope with the ever-increasing demand for high-speed data transmission of smart terminal mobile devices and related applications. Compared with the traditional communication method that relies on the base station for data forwarding, D2D communication directly establishes a communication link between the user and the D2D device without base station forwarding, which greatly reduces the communication delay and eases the communication network load of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/02H04W28/20H04W28/22H04W40/10H04W40/22H04B17/382
CPCH04W28/0215H04W28/0221H04W28/20H04W28/22H04W40/10H04W40/22H04B17/382Y02D30/70
Inventor 吴明明高玉兰肖悦
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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