Switching method and terminal of HSPA (High Speed Packet Access) channel

A high-speed packet access and channel switching technology, applied in wireless communications, electrical components, synchronization devices, etc., can solve problems such as interference and long handover delay, reduce interference, reduce handover delay, and improve handover performance. Effect

Inactive Publication Date: 2010-09-15
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the current HSPA system, the handover mechanism for the HSPA channel still adopts the hard handover method, that is, during the handover, the UE re-initiates the synchr

Method used

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  • Switching method and terminal of HSPA (High Speed Packet Access) channel
  • Switching method and terminal of HSPA (High Speed Packet Access) channel
  • Switching method and terminal of HSPA (High Speed Packet Access) channel

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Embodiment 1

[0022] Embodiment 1: Only HSPA channels exist. figure 1 The method flowchart provided for the embodiment of the present invention, such as figure 1 As shown, the method may include the following steps:

[0023] Step 101: The UE uses the received pilot signals of each cell to measure, and reports the measurement report to the RNC, and obtains the downlink synchronization difference between each neighboring cell and the source cell through the measurement, and combines the TA for the source cell to calculate For the measured TA of each neighboring cell.

[0024] UE may move from one cell to other cells during the mobile process. When it is in the coverage area of ​​multiple cells, it will receive pilot signals from multiple cells. Through this pilot signal, UE can monitor the signal status of each cell. , synchronization information, etc., and compare the downlink synchronization status of each cell with the source cell to obtain the downlink synchronization difference between...

Embodiment 2

[0037] Embodiment 2, the situation where the HSPA channel and the DPCH coexist. figure 2 The method flowchart provided for the embodiment of the present invention, such as figure 2 As shown, the method mainly includes the following steps:

[0038] Step 201: The UE uses the received pilot signals of each cell to measure, and reports the measurement report to the RNC, and obtains the downlink synchronization difference between each neighboring cell and the source cell through the measurement, and calculates the measurement target based on the TA of the source cell. The TAs of the adjacent cells to be visited.

[0039] Step 202: When the RNC judges that the handover condition is met according to the measurement report reported by the UE, it establishes a communication link with the target base station that meets the handover condition, and sends a handover command to the terminal.

[0040] Above-mentioned step 201 and step 202 and figure 1 Step 101 and step 102 in the proces...

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Abstract

The invention provides a switching method and a terminal of an HSPA (High Speed Packet Access) channel. By utilizing the downlink synchronous difference between a resource district and a target district and aiming at transmission TA (Time Advance) of the resource district, the terminal confirms TA aiming at the target district, and switches an HSPA channel to the target district aiming at the TA of the target district after receiving a switching command; and a mode of pre-synchronously switching the HSPA channel is adopted to prevent UE (User Equipment) from reinitiating a synchronous establishing process to the target district to switch the HSPA channel to the target district, reduce switching time delay and lessen interference brought by the switching process, thereby improving the switching performance.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a high-speed packet access channel switching method and terminal. Background technique [0002] In order to meet the mobility requirements of a user terminal (UE), when the UE moves from one cell to another, a handover mechanism will be implemented to ensure call quality. Usually, the cell where the UE is located before the handover is called the source cell, the corresponding access base station is called the source base station, the cell to be handed over to is called the target cell, and the corresponding access base station is called the target base station. [0003] The UE will report the measured cell information to the radio network controller (RNC) through the measurement report, and the RNC will determine whether to perform handover according to the reported cell information. If it is determined to perform the handover, the RNC will establish a corresponding channel in ...

Claims

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Application Information

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IPC IPC(8): H04W36/14H04W36/18H04W36/30H04W56/00
Inventor 李晓卡蔡月民
Owner CHINA ACAD OF TELECOMM TECH
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