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Hard handover method, system and mobile station

A mobile station, hard handover technology, applied in electrical components, wireless communication, etc., to reduce handover interruption time, ensure continuity, and improve communication quality.

Inactive Publication Date: 2012-11-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the one hand, because it takes a long time to establish a wireless air interface connection between the MS and the new BS, there is an obvious connection interruption, which leads to a decline in service quality; The reliability of establishing a wireless air interface service link is not high. If the service link cannot be successfully established with the new BS, it will directly lead to call drop, resulting in a high rate of hard handover call drop

Method used

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  • Hard handover method, system and mobile station
  • Hard handover method, system and mobile station
  • Hard handover method, system and mobile station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1, the first service link has been established between the source BS and the MS, for the handover method, refer to figure 1 , including the following steps:

[0033] 1. The MSC receives the handover application from the source BS;

[0034] 2. The MSC sends an assignment request to the target BS according to the handover application, requesting the target BS to establish a second service link with the MS, and the second service link includes an air interface service link;

[0035] 3. After the target BS establishes a service link with the MS, it notifies the MSC, and the MSC sends a handover command to execute the handover;

[0036] 4. The MS receives the switching command and switches to the second service link.

[0037] The above step of sending the switching command includes: sending the switching command to the source BS and the target BS respectively. Sending the handover command to multiple BSs can increase the possibility of the MS receiving the mes...

Embodiment 2

[0048]In the second embodiment, an MS equipped with a first CDMA transceiver and a second CDMA transceiver is used for illustration. The situation of being equipped with transceiver devices of other standards and being equipped with more than two transceivers can be understood and implemented based on the idea of ​​this embodiment.

[0049] see figure 2 , which is the switching method of this embodiment:

[0050] 201. According to the report of the MS, the source BS suggests hard handover to the target cell, and the source BS sends a handover application message with a cell list to the MSC. Compared with step 101 in the prior art, the report of the MS in step 201 adds a supported common transceiver flag information element, and the handover application message also adds a supported common transceiver flag information element. During specific implementation, a common transceiver identifier is added to each element of the cell list: 1 indicates that the handover target cell s...

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Abstract

This invention discloses a switching method and a mobile station. The method includes the following steps: installing a first business link between a source base station and a first transceiver of the mobile station, including the following steps: receiving a switching application of the source base station; sending an assigning request to a target base station based on the switching application,requesting to install a second business link between the target base station and a second transceiver of the mobile station; after the information finished by the business link, sending a switching order and indicating the mobile station switch to the second business link. The switching can be directly processed without waiting the connection of air interface business link through installing the air interface business link between the target base station and the mobile station before sending the switching order, which greatly reduces the switching interrupting time and effectively avoids the problem of losing communication in the switching process caused by unstable air interface signal, and ensures the communication continuity and effectively improves the communication quality.

Description

technical field [0001] The present invention relates to the field of wireless access, in particular to a hard handover method, system and MS. Background technique [0002] In the wireless cellular mobile network, the MS can roam arbitrarily. During the user call, due to the movement of the MS, the MS moves beyond the original access source base station (BS) coverage area and enters the coverage area of ​​other target BSs. At this time, it needs Through the handover, the MS can communicate with the target BS to keep the user's conversation uninterrupted. [0003] At present, the hard handover method provided by the wireless cellular mobile network is: when the MS is moving, it will report to the source after detecting that the signal of the source BS has deteriorated to a certain threshold or detecting a new BS with a stronger and better signal. BS, the source BS determines the need to perform hard handover according to a certain algorithm, generates a handover application ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00
CPCH04W36/0055H04W36/0058
Inventor 杨胜强
Owner HUAWEI TECH CO LTD