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首页> 外文会议>International Conference on Information Technology: New Generations;ITNG '09 >A Lookahead Strategy for Movement-Based Location Update in Wireless Cellular Networks
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A Lookahead Strategy for Movement-Based Location Update in Wireless Cellular Networks

机译：无线蜂窝网络中基于运动的位置更新的超前策略

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摘要

We present a lookahead strategy for a movement-based location update that reduces the signalling traffic of the classical movement-based procedure. Our proposal is based on the fact that many trips of the mobile terminals follow routinary trajectories, for instance from home to the office or from the office to the shopping center. Based on a mobile terminal movement model that captures the mentioned behavior, the network predicts the mobile's location at cell level. If the mobile terminal visits an expected cell, the target cell, before a certain movement threshold is reached, its movement counter is reset to zero. Otherwise the mobile terminal will trigger a location update message when the mentioned threshold is reached.With this strategy the mobile terminal has less contact with the network, so the uncertainty on its location increases. As a consequence, in order to keep the paging cost below reasonable bounds, a selective polling strategy is used. The net effect is a significant saving in the signalling traffic supported in the air interface.
机译：我们提出了一种基于运动的位置更新的前瞻性策略，该策略可减少经典基于运动的过程的信令流量。我们的建议基于这样一个事实，即移动终端的许多行程都遵循常规轨迹，例如从家到办公室或从办公室到购物中心。基于捕获上述行为的移动终端移动模型，网络可以在小区级别预测移动设备的位置。如果移动终端在达到某个移动阈值之前访问了预期的小区，即目标小区，则其移动计数器被重置为零。否则，当达到所述阈值时，移动终端将触发位置更新消息。采用这种策略，移动终端与网络的接触较少，因此其位置的不确定性增加。结果，为了使寻呼成本保持在合理的范围内，使用了选择性的轮询策略。最终结果是大大节省了空中接口支持的信令流量。

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