An efficient location registration scheme is essential to continuously accommodate the increasing number of mobile subscribers and to offer a variety of multimedia services with good quality. The objective of this study was to analyze the optimal size for the location area of a distance-based registration (DBR) scheme by varying the number of location areas on a cell-by-cell basis, not on a ring-by-ring basis. Using our proposed cell-by-cell distance-based registration scheme with a random walk mobility model, a variety of circumstances were analyzed to obtain the optimal number of cells for location area for minimizing the total signaling cost on radio channels. Analysis results showed that the optimal number of cells for location area was between 4 and 7 in most cases. Our cell-by-cell distance-based location registration scheme had less signaling cost than an optimal ring-by-ring distance-based location registration scheme with an optimal distance threshold of 2 (the optimal number of cells for location area was 7). Therefore, when DBR is adopted, it must be implemented with an LA increasing on a cell-by-cell basis to achieve optimal performance.

中文翻译：

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实施基于距离的注册时的改进和性能评估

有效的位置注册方案对于不断适应不断增加的移动用户数量和提供各种高质量的多媒体服务至关重要。本研究的目的是通过在逐个小区而不是逐个环的基础上改变定位区的数量来分析基于距离的注册 (DBR) 方案的定位区的最佳大小. 使用我们提出的基于小区距离的注册方案和随机游走移动模型，分析了各种情况，以获得定位区域的最佳小区数量，以最小化无线电信道上的总信令成本。分析结果表明，在大多数情况下，定位区域的最佳小区数在4到7之间。我们的逐小区基于距离的位置注册方案的信令成本低于最优距离阈值为 2（定位区域的最优小区数为 7）的最优逐环距离的位置注册方案。因此，当采用 DBR 时，必须通过逐个小区增加 LA 来实现最佳性能。