基于Benders分解的無線網(wǎng)絡(luò)協(xié)作節(jié)能機(jī)制
doi: 10.11999/JEIT160387
基金項(xiàng)目:
國家863計(jì)劃項(xiàng)目(2014AA01A701) ， 國家自然科學(xué)基金(61271187)
Benders Decomposition Based Cooperative Energy-saving Mechanism in Wireless Networks
Funds:
The National 863 Program of China (2014AA01A701), The National Natural Science Foundation of China (61271187)
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摘要: 該文為降低無線接入網(wǎng)的能耗，提出一種基于Benders分解的協(xié)作節(jié)能機(jī)制，通過協(xié)作基站選擇和基站狀態(tài)控制以解決基站休眠帶來的弱覆蓋問題。結(jié)合業(yè)務(wù)量分布和SINR空間變化建立協(xié)作基站的選擇模型，用以找到合適的協(xié)作基站以及相應(yīng)的休眠基站。并提出一個(gè)基于Benders分解的聯(lián)合優(yōu)化策略，控制基站活躍/休眠狀態(tài)，實(shí)現(xiàn)網(wǎng)絡(luò)容量與吞吐量間的平衡。仿真結(jié)果表明，該機(jī)制可在不增加發(fā)射功率的條件下實(shí)現(xiàn)覆蓋補(bǔ)償，并在至多42.6%的基站休眠時(shí)，仍能滿足網(wǎng)絡(luò)的基本性能要求。
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關(guān)鍵詞:
- 無線網(wǎng)絡(luò) /
- 節(jié)能 /
- Benders分解 /
- 協(xié)作基站 /
- 聯(lián)合優(yōu)化策略
Abstract: To reduce the energy consumption in wireless access networks, a Cooperative Energy-Saving Mechanism based on Benders Decomposition (BD-CESM) is presented to solve inadequate coverage problem caused by BS dormancy by means of cooperative BS selection and BS state control. A cooperative BS selection model is designed to obtain appropriate cooperative BS and corresponding dormant BS according to the traffic load distribution and the spatial varying SINR. Then a Benders decomposition based joint optimization strategy is proposed to balance capacity with throughout via controlling on-off state of BS. The simulation results show that up to 42.6% of BS can be dormant while meeting basic network performance requirements. Furthermore, the coverage can be compensated without increasing transmitting power in the proposed mechanism. -
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