关键词: 长期演进技术（LTE）系统, 跟踪区关联性, 跟踪区列表, 位置区, 位置管理, 信令开销

Abstract: Tracking?mobile users while reducing?the signaling overhead?is an important aspect of the?position management in communication system. Tracking?area list?is a new concept?introduced?in the LTE system, which is composed of a plurality of tracking?area to reduce the?signaling cost for location management. Influenced by life, work and study, most of the users?have?fixed move path. This paper presents a??tracking?area list?design method?based on?tracking area correlation. It obtains the correlation from user’s history?moving?path?and establishes the tracking area table. ?When the tracking?area update?message?occurs, the network?obtains?the last visited?tracking area and current?tracking area?from the message and then combining tracking area?table?to design tracking area?list. ?The method can?vary with different?last visited?tracking area?dynamically designing tracking area list?and?is especially suitable for?large scale network. Finally, it compares with “rule of thumb” method of the signaling overhead during a day using the?Lisbon downtown network?data. Results show that the method in?reduction of signaling cost for location management?is greatly improved by?at least 11.5%.

Key words: Long Term Evolution（LTE） system, tracking area correlation, tracking area list, location area, location management, signal overhead