蜂窝通信与设备直通通信混合网络下的资源优化

doi:10.11959/j.issn.1000-0801.2016043

Abstract

Abstract:

Device-to-device（D2D）communication underlaying cellular network can greatly reduce the energy consumption for mobile terminals，enhance the aggregate throughput for the system and improve quality-of-service （QoS）experience for individual users by utilizing the proximity gain residing in local communicating pairs.However，intra-cell orthogonality is impaired due to spectral sharing and the design of radio resource allocation mechanism is addressed.Energy consumption，spectral efficiency，energy efficiency，the number of admitted D2D links and the worst individual data rate were optimized and QoS requirement incorporating of all links were guaranteed.With the help of simulations，the efficiency of the proposed mechanism was verified and the trade-offs between different optimization targets was observed.

Key words: D2D communication, energy conservation, system throughput, user fairness, performance trade-off, resource allocation

Jihong ZHAO,Jiaojiao DONG,Rui TANG,Hua QU. Resource optimization for device-to-device communication underlaying cellular network[J]. Telecommunications Science, 2016, 32(3): 105-112.

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References 11

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参数	设置
天线参数	模型：全向型；增益：基站/移动终端：14/0 dBi
单信道带宽/信道数目	180 kHz/10个
噪声的功率谱密度和噪声系数	-174 dBm/Hz；基站/移动终端：5/9 dB
C/D用户最大发射功率限制/mW	200/20
D2D用户的SINR门限值/dB	20
蜂窝/D2D链路路径损耗模型	PL_c=128.1+37.6 ×ln（d[km]）；
	PL_d=148.0+40.0×ln（d[km]）

系统			C-SINR/dB
系统	4	9	14	19	24
ST	0.876 2	0.868 6	0.836 1	0.822 0	0.785 4
MR	0.812 3	0.798 1	0.729 7	0.690 0	0.563 7

系统			D2D数目/对
系统	6	8	10	12	14
ST	0.527 4	0.691 5	0.840 3	0.927 3	0.963 2
MR	0.471 6	0.600 1	0.724 8	0.886 2	0.927 7

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Resource optimization for device-to-device communication underlaying cellular network

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