Handover switching method for notice-type group call of clustering multi-switchboard based on SIP (Session Initiation Protocol)
A handover and switch technology, which is applied in wireless communication, electrical components, wireless network protocols, etc., can solve the problems of lack of efficient and feasible cross-switch switch methods, difficulty in popularization and application, etc., to speed up switching speed, save switching time, The effect of improving the utilization rate
Inactive Publication Date: 2010-11-24
NEOLINK COMM TECH HANGZHOU +1
View PDF2 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0012] The purpose of the present invention is to provide a SIP-based trunking cross-switch announcement type group call handover for the lack of an efficient and feasible cross-switch switching method in group call calls in the existing trunking wireless communication system, which makes it difficult to popularize and apply method
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0036] Such as image 3 shown.
[0037] A SIP-based cluster cross-switch announcement type group call handover method, the SIP protocol can be modified according to the following steps, and then the cross-switch announcement type group call handover can be performed, or other conventional signaling can be used directly as follows The method of inter-exchange announcement type group call handover: where
[0038] The method of modifying the SIP protocol is as follows:
[0039] ① Add the PREPARE method, which is used to apply for the announcement-type group call handover between switches;
[0040] ② Expand the use of INVITE so that it can be used to call group call handover numbers in the trunking system;
[0041] ③Add the header fields Handover-Number and P-Access-Network-Info, where Handover-Number is used to carry the group call handover number, and...
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
Login to View More Abstract
The invention discloses a handover method for notice-type group call of a clustering multi-switchboard based on an SIP (Session Initiation Protocol), which is characterized by being a method for modifying the SIP as follows and realizing the handover of the notice-type group call of a clustering multi-switchboard according to the modified SIP. A mobile station in the group call communication automatically selects a new base station having better communication condition and initiates the handover of the notice-type group call to the original base station by using an air interface signaling; the air interface signaling includes the position mark information of the new base station; the original base station initiates the handover of the notice-type group call to the connected switchboard according to the internal signaling; the switchboard judges that the new base station is connected with the other switchboard according to the position mark information of the new base station; the communication link is established by a group call controller and the service channel is acquired to realize the handover group call communication without interruption. The invention solves the problem of maintaining signaling of the group call communication without interruption when the cluster mobile station moves among the switchboards; the switching time is shortened, the switching speed is increased and the utilization rate of the channel is improved.
Description
technical field [0001] The present invention relates to a trunking wireless communication technology, especially a group call communication technology based on SIP (Session Initiation Protocol, defined by IETF, an application layer control protocol based on IP) in the trunking communication technology, specifically a Disclosed is a SIP-based method for group call handover of cluster cross-switch announcement type. Background technique [0002] As we all know, the trunking mobile communication system is a dedicated scheduling mobile communication system that efficiently uses wireless channel resources, referred to as the trunking system. The trunking system can automatically, fairly and orderly distribute all traffic to all available channels, make multiple wireless channels dynamically share traffic, and provide wireless communication service guarantee for a large number of users with a small amount of frequency resources. The system has the advantages of high spectrum effi...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/08H04W80/10H04W84/08
Inventor 姚旭罡徐子平戎骏
Owner NEOLINK COMM TECH HANGZHOU