Traditional mobile networks will become dual-layer wireless networks due to small cells deployment. In the next generation of wireless mobile communications, it can be visualized that heterogeneous networks, including macro cells, micro cells and pico cells, are demanded to cooperate user-friendly in a seamless manner. One of the key factors for network cooperation is mobility of users, which causes disproportional distributions of traffic load in time-space domain. In the paper, a new mobility model is raised and analyzed by Markov theory. Furthermore, a novel energy conservation scheme based on the mobility model is proposed. Energy efficiency is improved through the deployment of sleeping strategies among small cells. And an optimized method is given to reduce energy consumption, on condition that users' demands are satisfied. Finally, the validity of energy saving scheme is verified by simulations. The numerical results show that energy consumption could be reduced about 12%.
[1]
Hyundong Shin,et al.
Energy Efficient Heterogeneous Cellular Networks
,
2013,
IEEE Journal on Selected Areas in Communications.
[2]
Liu Qi.
Dynamic Load Balance Scheme Based on Mobility and Service Cognition in Integrated 3G/WLAN Networks
,
2010
.
[3]
Yue Wang,et al.
Dynamic load balance scheme based on mobility and service awareness in integrated 3G/WLAN networks
,
2010,
2010 Global Mobile Congress.
[4]
P. Stuckmann,et al.
The EUREKA Gandalf project: monitoring and self-tuning techniques for heterogeneous radio access networks
,
2005,
2005 IEEE 61st Vehicular Technology Conference.
[5]
Li Cheng-shu.
Radio Access Management for Multi-mode Reconfigurable Terminals
,
2007
.