TY - GEN
T1 - Capacity analysis of dense wireless networks with joint optimization of reservation and cooperation
AU - Zhang, Yongping
AU - Li, Bo
AU - Yang, Mao
AU - Yan, Zhongjiang
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/9/12
Y1 - 2016/9/12
N2 - Due to the increasingly scarce spectrum resources and densely deployed wireless networks, how to increase the spectrum utilization efficiency becomes a hot topic. Channel reservation and cooperative transmission have shown great potential to improve the spatial reuse and network capacity. However, it is difficult to avoid the shortcomings that simply adopting either scheme. In this paper, we propose the concept of reserved cooperative link and investigate the joint optimization of channel reservation and cooperative transmission to improve the network capacity. The concept of area capacity is introduced to characterize the spectral efficiency. After deriving its closed-form expression, the area capacity can be optimized by jointly selecting the optimal helper and employing the optimal reservation zone. Simulation results well validate our analysis, and show that the optimal reservation zone size is reduced by 30% compared with direct transmission with channel reservation. The corresponding optimal area capacity is significantly improved, and a gain of 140% can be obtained for the path loss exponent of 4.
AB - Due to the increasingly scarce spectrum resources and densely deployed wireless networks, how to increase the spectrum utilization efficiency becomes a hot topic. Channel reservation and cooperative transmission have shown great potential to improve the spatial reuse and network capacity. However, it is difficult to avoid the shortcomings that simply adopting either scheme. In this paper, we propose the concept of reserved cooperative link and investigate the joint optimization of channel reservation and cooperative transmission to improve the network capacity. The concept of area capacity is introduced to characterize the spectral efficiency. After deriving its closed-form expression, the area capacity can be optimized by jointly selecting the optimal helper and employing the optimal reservation zone. Simulation results well validate our analysis, and show that the optimal reservation zone size is reduced by 30% compared with direct transmission with channel reservation. The corresponding optimal area capacity is significantly improved, and a gain of 140% can be obtained for the path loss exponent of 4.
KW - Capacity Analysis
KW - Channel Reservation
KW - Cooperation Transmission
KW - Dense Wireless Networks
UR - http://www.scopus.com/inward/record.url?scp=84989808969&partnerID=8YFLogxK
U2 - 10.1109/WCNC.2016.7565121
DO - 10.1109/WCNC.2016.7565121
M3 - 会议稿件
AN - SCOPUS:84989808969
T3 - IEEE Wireless Communications and Networking Conference, WCNC
BT - 2016 IEEE Wireless Communications and Networking Conference, WCNC 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 IEEE Wireless Communications and Networking Conference, WCNC 2016
Y2 - 3 April 2016 through 7 April 2016
ER -