Target cell determining method, user equipment, base station and system in switching process

A target cell and user equipment technology, applied in electrical components, wireless communication, etc., can solve problems such as data interruption, poor handover performance, long transmission cycle of the main broadcast channel and dynamic broadcast channel, etc., so as to omit time delay and shorten handover interruption time, the effect of improving switching performance

Active Publication Date: 2011-04-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the above process, due to the long sending period of the main broadcast channel and the dynamic broadcast channel, for example, in some systems, the sending period of the main broadcast channel is about 40ms, and the sending period of the dynamic broadcast channel is about 80ms, then the UE reads the broadcast channel The period of the handover is roughly 120ms. At this time, the UE has disconnected from the source cell and has not established a connection with the target cell. Therefore, too long handover interruption time may cause the UE to generate data when receiving or sending data. Interruption, resulting in poor switching performance

Method used

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  • Target cell determining method, user equipment, base station and system in switching process
  • Target cell determining method, user equipment, base station and system in switching process
  • Target cell determining method, user equipment, base station and system in switching process

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Embodiment Construction

[0024] In the embodiment of the present invention, considering that in some systems, such as the Long Term Evolution (LTE) system, the number of cells contained in each networking area is relatively large, such as 510 cells, etc., for such a networking area, the physical layer identifier As a regional identity is unique in this area, the probability of repetition between cells is small, and the physical layer identity can be obtained from the synchronization channel when the UE synchronizes adjacent cells, so there is no need to perform subsequent dynamic Broadcast channel reading shortens the delay of switching interrupts.

[0025] A detailed description will be given below in conjunction with the embodiments and accompanying drawings.

[0026] Fig. 1 is an exemplary flowchart of a method for determining a target cell in a handover process in an embodiment of the present invention. As shown in Figure 1, the process includes the following steps:

[0027] Step 101, the source...

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Abstract

The invention discloses a method of determining an object district in the switching process, comprising: receiving switching command of physical layer identification carrying along the object district by a user equipment (UE); acquiring the physical layer identification of adjacent districts from a synchronizing channel of the adjacent districts; when the acquired physical layer identification isconsistent with that carried along in the received switching command, determining the adjacent districts are the object districts. In addition, the invention also discloses a UE, a source base station and a determining system of the object district in the switching process. The technical scheme of the invention requires no dynamic broadcast channel, thereby saving delay of reading the broadcast channel, shortening interrupting time in the switching process, furthermore increasing the switching performance.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a method for determining a target cell in a handover process, user equipment, a base station and a system. Background technique [0002] In a communication system, when a user equipment (UE) is handed over between cells, the whole handover process roughly includes four steps: measurement-report-judgment-execution. That is, when the radio conditions change, the UE measures the adjacent cell, and sends a measurement report including the physical layer identifier (that is, the regional identity) and quality information of the adjacent cell to the source base station, and the source base station makes a decision based on the measurement report. When it is decided that the UE will switch to the target cell, it will exchange information with the target base station according to the physical layer identity of the target cell to complete the resource preparation of the target ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/24H04W36/30H04W88/02H04W88/08
Inventor 尹丽燕
Owner HUAWEI TECH CO LTD
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