Unlock instant, AI-driven research and patent intelligence for your innovation.

A method to realize soft hand-over of group call in CDMA cluster system

A trunking system and code division multiple access technology, applied in the field of mobile communication, can solve problems such as the inability to realize group call soft handover, and achieve the effect of reliable handover performance and high handover performance

Inactive Publication Date: 2007-05-16
ZTE CORP
View PDF0 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the disadvantage that group call soft handover cannot be realized in the existing CDMA system trunking system, and propose a method for realizing soft handover in the trunking system, which can fully take into account the reliability and switching success rate etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method to realize soft hand-over of group call in CDMA cluster system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The implementation of the technical solution of the present invention is described below in conjunction with accompanying drawing:

[0023] Fig. 1 is the processing flow chart of mobile station group call soft handoff plus:

[0024] 101. The MS is in a group call;

[0025] 102. The MS detects that the strength of a certain pilot signal in the neighboring cell set exceeds the dynamic adding threshold, adds the pilot signal to the candidate set, and sends a pilot strength measurement report to the BSC through the BTS and sends a pilot strength measurement report to the base station;

[0026] 103. The BSC judges whether it is possible to perform soft handover within the BSC according to the conditions of neighboring cells and the currently allocated resources; specifically, the base station controller inquires about the cell where the user is currently located, and compares whether the current cell and the cell to be added are in In the same BSC, it is judged whether inte...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The related soft switching method for group calling in CDMA cluster system comprises: MS adds the pilot signal with strength over dynamic adding threshold into candidate set; BSC decides to take soft switching according to neighbor area and resource allocation and indicate BS to allocate wireless resource; BS allocates basic channel and compensated channel for new-added pilot signal; the mobile plant adds the pilot signal met condition into the effective set; MS sends pilot strength detection report when detecting some signal strength less than threshold; BSC decides to remove the signal from effective set and send switching information; MS removes channels and returns finish information; and BSC notifies BS to release wireless resource. This invention can improve switching reliability.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to group call switching in the field of digital trunking based on CDMA (Code Division Multiple Access, Code Division Multiple Access) system. Background technique [0002] With the increasingly wide application of communication technology in various fields such as economy and social life, the demand for one-to-many cluster communication technology is also increasing. Due to the continuous and rapid development of communication technology, users are no longer satisfied with the commonly used analog trunking technology, but have put forward higher requirements for high confidentiality, flexible grouping, clear voice, and perfect functions. Therefore, the digital trunking came into being, and various functions close to users and their implementation methods have also become the focus of research and development. Soft handover is a handover method in which the mobile station starts ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04Q7/38H04Q7/28H04W36/18H04W36/28H04W36/30
Inventor 李伟浩孙波肖飞龙黄驰
Owner ZTE CORP