这个可以有组群移动模型模拟操作，模拟出手机用户以不同的形式，速度及覆盖面积的状态。
Such user mobility can be modeled by a group mobility model where the mobile users are organized into groups of different mobility pattern, mobility rate, and coverage area.
有了“任自由”，法国的法国电信、BOUYGUES电信及SFR的用户首次能够通过手机以组群的形式相互之间进行交流、会见、聊天。
For the first time in France, France Telecom, Bouygues Telecom and SFR subscribers are able to cross over, meet and chat in groups on their mobiles using SMS thanks to Freever.
有了“任自由”，法国的法国电信、BOUYGUES电信及SFR的用户首次能够通过手机以组群的形式相互之间进行交流、会见、聊天。
For the first time in France, France Telecom, Bouygues Telecom and SFR subscribers are able to cross over, meet and chat in groups on their mobiles using SMS thanks to Freever.
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