CDMA cluster communication system conventional group calling terminal side adjacent cell information maintenance method
A technology of neighborhood information and trunking communication, applied in wireless communication, network data management, electrical components, etc., can solve the problems of dropped calls, inability to efficiently search for pilots, etc., so as to improve the success rate and reduce the probability of dropped calls.
Inactive Publication Date: 2010-06-16
江苏普惠银杏产业发展有限公司
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Problems solved by technology
[0007] The technical problem to be solved by the present invention is to provide a method for maintaining adjacent cell information on the traditional group call terminal side of the CDMA trunking communication system, so as to solve the problems caused by the inability to efficiently search for useful pilots when the traditional group call terminal autonomously switches in the prior art. word problem
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[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0031] figure 1 Shown is the process of supplementing the generation and use of the neighbor cell set in the method of the present invention, including the following steps:
[0032] Step 101: When no hard handover occurs on the F_SCH, the terminal saves the neighbor cell information received from the F_SCH into a current neighbor cell information cache;
[0033] Step 102: When F_SCH hard handover occurs, the terminal first compares the newly received neighbor cell information stored in the current neighbor cell information buffer with the record in a neighbor cell information candidate queue, and uses the newly received neighbor cell information according to the comparison result. Update the records in the neighbor cell information candidate queue according to the obtained neighbor cell information;
[0034] Step 103: When the termi...
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This method includes: firstly, the terminal (TM) stores the neighboring area info (NAI) received from F_SCH (FS) into the NAI buffer. Then, when FS generates a hard-switching, TM renews the record inthe NAI selected series (NSS) with the newly received NAI in the NAI buffer according to the comparison result comparing with a record in NSS. Further, when TM receives NAI from FS or the activating set changes, TM combines selectively the record in NSS with the current record in NAI buffer to form a supplement neighboring set (SNS). Finely, SNS is used to replace the original neighboring area set. This invention raises the success rate of searching the useful leading frequency when the traditional group-calling terminal actively switches. It also lowers the probability of call-cut due to thedelay renewing of the TM NAI.
Description
technical field [0001] The invention relates to a CDMA trunking communication system, in particular to a method for maintaining adjacent cell information on a traditional group call terminal side of the CDMA trunking communication system. Background technique [0002] The CDMA trunking communication system is developed based on CDMA 2000. In addition to all the business functions of the CDMA 2000 system, the system also has trunking dispatching business functions, such as traditional group calls, enhanced group calls, broadcast group calls, and individual calls. [0003] The main features of the traditional group call service are: the number of users in the group supported by a single carrier is unlimited, limited resources can be utilized, and the command and dispatch function is supported when a large number of users are concentrated in the same place. When a traditional group call is established, each cell in the dispatching area is assigned a shared forward fundamental c...
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IPC IPC(8): H04W4/08H04W8/00H04W84/08
Inventor 周家辉刘波
Owner 江苏普惠银杏产业发展有限公司