Mobility management method and system of user terminal along given line

A user terminal and line technology, applied in network data management, wireless communication, electrical components, etc., can solve problems such as high call drop rate, difficulty in mobility management, and large waste of resources, so as to improve accuracy and efficiency, and avoid unnecessary Sequence reselection, the effect of improving accuracy

Active Publication Date: 2010-10-27
ZTE CORP
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AI Technical Summary

Problems solved by technology

It is used to solve the problem of small coverage and large waste of resources when traditional wireless coverage cells are used along predetermined lines (such as high-speed railways and expressways), and when user terminals are in high-speed motion, mobility management is difficult, the connection rate is low, and dropouts occur. Technical problems such as high call rate, disorderly reselection and ping-pong effect easily occur in user terminals

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  • Mobility management method and system of user terminal along given line
  • Mobility management method and system of user terminal along given line
  • Mobility management method and system of user terminal along given line

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Embodiment Construction

[0066] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below by taking high-speed railway as an example and referring to the accompanying drawings.

[0067] figure 1 Shown are examples of different levels of cells in the Overlay Hierarchical Network (HCS) along a high-speed railway. Tier A cell (with The shaded part shows) and layer B cells are two different layers. The two levels overlap each other geographically along the high-speed railway and nearby areas; but the difference between the two is: level B is a common (public network) community level, and its target service objects are not moving at high speed in the carriage, only geographically The cell of the UE just in the area along the railway line is a common cellular hexagonal cell. Level A is the level of private network cells covering the high-speed railway line. Its target service objects are UEs moving in...

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Abstract

The invention discloses a mobility management method and a system of a user terminal along a given line. The invention reduces unnecessary measurement, avoids the disordered reselection or switching of a side cell and improves the efficiency of UE mobility management by setting a proper adjacent cells list and decides the reselected or switched target cell according to the UE movement direction and improves the accuracy of the UE mobility management. At the same time, the invention separates a private network covered by the given line from a common public network, enlarges the coverage range of each private network cell by adopting RRU and the RRU cell merging technology of different types and makes the cell coverage thereof accord with the linear shape of scenes along the given line in order to reduce the times of the cell reselection and switching.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and system for mobility management of third-generation mobile communication technology along a predetermined line (such as high-speed railway, expressway), and the mobility management includes cell reselection and cell handover methods and systems. Background technique [0002] The development of personal mobile communication has greatly enriched people's lives, enabling people to easily access communication networks at any place, any time, and under any conditions, and enjoy voice or data communication services. The realization of this goal depends on the wireless "full coverage" and mobility management mechanism of the mobile communication network. Taking the third generation mobile communication system as an example, its wireless access network is composed of a plurality of cells in the shape of cells covering the entire terrestrial land system (PLMN). Ea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W8/00H04W36/26
CPCH04W36/385
Inventor 朱昀王曼
Owner ZTE CORP
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