Method and apparatus for mobility management

A mobility and user equipment technology, applied in the field of mobility management, can solve problems such as increased power consumption, and achieve the effect of reducing the number of ping-pong times and increasing complexity

Inactive Publication Date: 2016-01-13
OPTIS WIRELESS TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

The increase in power consumption stems from the fact that every time the UE changes cells, the UE has to turn on its receiver in order to obtain the necessary system information

Method used

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  • Method and apparatus for mobility management
  • Method and apparatus for mobility management
  • Method and apparatus for mobility management

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Embodiment Construction

[0027] Now, the present invention will be described more fully hereinafter with reference to the accompanying drawings showing preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to the present invention. technical personnel in the field. In the drawings, like reference numbers indicate like elements.

[0028] A basic idea of ​​the embodiments proposed herein is to provide multiple sets of mobility trigger parameters. Each set of mobility trigger parameters corresponds to a predetermined user equipment (UE) speed range in the sense that each set includes parameters deemed appropriate when the UE speed falls within the speed range corresponding to that set. However, according to an embodiment of the invention...

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Abstract

The present invention relates to methods and devices for mobility management in a cellular communications system. A user equipment maintains (21) at least two sets of mobility trigger parameters. Each set of mobility trigger parameters corresponds to a predetermined user equipment speed range. The user equipment determines (22) a speed range that the speed of the user equipment falls into and selects (23), based on the determined speed range, at least one set of mobility trigger parameters to be used for performing mobility-based decisions. If the user equipment is in connected mode a network base station may select a set of mobility trigger parameters to be used for performing handover decisions based on a determined speed range of the user equipment. Advantages are that ping-pong mobility decisions may be avoided and it is sufficient to determine a range for the UE speed, which is less complicated than determining an accurate speed of the UE particularly in idle mode.

Description

technical field [0001] The present invention relates to a method and arrangement for use in a cellular communication system, and in particular to a method and arrangement for mobility management based on a determined speed range of a user equipment. Background technique [0002] Mobility management is a challenging task in cellular communication systems. A factor that has a key influence on the performance of the mobility management scheme is the setting of the mobility trigger, which was published in the article "TrendsInHandoverDesign" by G.P. Pollini in the March 1996 "IEEE Communications Magazine" and in the December 1998 "IEEE Personal Communications" Discussed in the published article "Handofin Cellular Systems" by N.D. Tripathi, J.H. Reed and H.F. Vanlandingham. [0003] There are several mobility triggers used in different communication systems, but most systems consider two types of hysteresis as a mobility trigger: [0004] lag in signal quality; and [0005] Ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/32
CPCH04W36/32
Inventor K·迪莫M·卡茨米W·米勒宣之怡
Owner OPTIS WIRELESS TECH LLC
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