移动位置协作感知的LTE-Advanced系统机会切换机制

LTE-Advanced system opportunity switching mechanism based on mobile position collaborative awareness

为了缩短LTE-Advanced系统的切换延迟和降低切换掉话率,研究了一种可协作感知用户端位置移动的机会切换机制。首先,基于用户端到基站的距离对瞬时数据速率、系统传输延迟和系统峰值吞吐率的影响,建立了移动位置协作感知模型,该模型通过点到点与端到端的距离协作感知精确计算用户端移动位置。然后,以用户端、邻居用户群、基站群和接收端用户组成的机会网络通过机会感知和信号测量最终实现机会切换。实验结果表明,所提出的机会切换机制具有高接收功率、高带宽、短切换延迟和低切换掉话率等优势。

In order to shorten the switching delay of the LTE?Advanced system and reduce the switching call drop rate,an opportunity switching mechanism to aware the mobile position of the client collaboratively.On the basis of the influence of the distance from the client to base station distance on the instantaneous data rate,system transmission delay and system peak throughput rate,the mobile location collaborative awareness model was established.The client mobile position is calculated accurately according to the distance collaborative awareness of the point?to?point and end?to?end distances.The opportunity network composed of the client,neighbor user group,base station group,and users of the receiving end is used to switch the opportunity by means of opportunity awareness and signal measurement.The experimental results show that the opportunity switching mechanism has the advantages of high received power,wide bandwidth,short switching delay,and low switching call drop rate.