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Selection method, system and device for switching candidate target cells

A candidate target and cell technology, applied in electrical components, wireless communication, etc., can solve the problems of candidate target cell handover failure and small possibility

Active Publication Date: 2010-08-25
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] When the network side selects the candidate target cell for terminal handover according to artificial settings and handovers the UE to the candidate target cell, it is less likely to select the best candidate target cell, and it is very likely that the signal strength of the candidate target cell is insufficient. Handover failure caused by meeting the handover conditions

Method used

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  • Selection method, system and device for switching candidate target cells
  • Selection method, system and device for switching candidate target cells
  • Selection method, system and device for switching candidate target cells

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Embodiment 1

[0055] In this embodiment, the base station determines that the terminal needs to perform cell handover when receiving the handover command sent by the network management entity. The handover command may be a forced handover command sent by the network management entity to balance cell loads. Then, the base station selects a neighboring cell that satisfies the handover condition from the saved neighboring cells as a candidate target cell for terminal handover, that is, according to the stored correspondence, determines the neighboring cell identity corresponding to the signal strength that satisfies the preset handover threshold, Then select the neighboring cell corresponding to the neighboring cell identifier as a candidate target cell for terminal handover.

Embodiment 2

[0057] In this embodiment, the base station determines that the terminal needs to perform cell handover when receiving the measurement report message carrying the trigger handover flag sent by the terminal. In addition to selecting a neighbor cell that satisfies the handover condition from the saved neighbor cells as a handover candidate target cell, the base station also selects a neighbor cell that satisfies the handover condition from the neighbor cells carried in the measurement report message carrying the trigger handover flag as the terminal handover target cell. Candidate target cells, specifically, first obtain the corresponding relationship between the neighbor cell identifier carried in the measurement report message and the signal strength value, and then determine the neighbor cell identifier corresponding to the signal strength that satisfies the handover threshold value according to the corresponding relationship, and select the The neighbor cell corresponding to ...

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Abstract

The embodiment of the invention discloses a selection method for switching candidate target cells, which comprises the following steps: a base station receives a measuring report message transmitted by a terminal and carrying a sign of entering a cell edge, and saves the corresponding relation between an adjacent cell identification carried in the measuring report message and the signal intensity value; and after the base station determines to carry out cell switching on the terminal, according to the corresponding relation, the adjacent cell identification corresponding to the signal intensity meeting a preset switching threshold is determined, and the adjacent cell corresponding to the adjacent cell identification is selected as a candidate target cell for switching the terminal. The embodiment of the invention also discloses a selection system and device for switching the candidate target cells. The invention can improve the possibility of selecting the best candidate target cell when the terminal carries out cell switching and reduce the probability of switching failure.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method, system and equipment for selecting a handover candidate target cell. Background technique [0002] In the Long Term Evolution Time Division Duplex (LTE TDD) system, the radio network controller (RNC) in the original 3G no longer exists, and the base stations (eNB) interact through the X2 interface, and the mobility management entity in the eNB and the core network (MME) or serving gateway (S-GW) interact through the S1 interface, and the network architecture is shown in FIG. 1 . [0003] Due to the changes in the functional division of the radio access network (RAN) and core network (CN) due to changes in the network structure, some functions performed by the RNC in the original 3G system are performed by the eNB in ​​the LTE system, such as user equipment (UE ) cell handover is controlled by the eNB. [0004] The process of UE's measurement report trigge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/08
Inventor 贺文涛唐纪晔
Owner DATANG MOBILE COMM EQUIP CO LTD
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