Calling zone limit method
A technology of calling area and area, applied in the direction of access restriction, communication between multiple stations, wireless communication, etc., can solve the problems of prolonged call setup time and increased investment.
Inactive Publication Date: 2007-04-11
HUAWEI TECH CO LTD
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[0010] For railway wireless dispatching applications, fast call establishment is an important requirement to ensure dispatching safety, but this technical solution must query the current position information of the train through the WAN / LAN network to the train control system before each call establishment, so that The call establishment time is extended; in order to allow the dispatcher to query the current position information of the train from the train control system, it is necessary to establish a WAN / LAN network, which increases the investment
[0011] The same defect also exists in the wireless dispatching application of vehicles on highways and wireless dispatching applications of river ships
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[0038]Still take the dispatcher calling the train driver as an example, because in the call processing process of the dispatcher calling the train driver, the cell number where the train driver is currently located must be used, and in the railway Global System for Mobile Communications (GSM-R), generally The boundary of the dispatching area coincides with the border of the cell through network planning, that is, the dispatching area is composed of one or more GSM-R cells, so it can be dispatched within the jurisdiction of the built-in dispatcher and dispatcher in the railway global mobile communication system The database of the corresponding relationship between the cells can be used to judge whether to allow or restrict the call of the dispatcher according to the data in the database during the process of processing the call of the dispatcher by the railway global mobile communication system.
[0039] In the GSM-R communication system, the dispatching area under the jurisdic...
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The method applicable to wireless dispatch system includes following steps: building first data base to store terminal number of dispatcher, and coincidence relation between VLR numbers of MSC distributed in dispatch area; building second data base to store terminal number of dispatcher, and coincidence relation between sub zone numbers of VMSC distributed in dispatch area. Dispatcher starts up calling, GMSC looks first data base, which allows calling of dispatcher to route to VMSC distributed in dispatch area, and restricting calling of dispatcher to route to VMSC not included in dispatch area. VMSC in dispatch area looks up second data base, allowing connecting dispatcher and calling between called terminals in sub zone in dispatch area, and restricting calling between called terminals in sub zone not in dispatch area. based on whether the sub zone number the called mobile terminal locates at is in dispatch area or not, GMSC / VMSC restricts calling.
Description
technical field [0001] The present invention relates to mobile communication technology, more specifically to a method for limiting calling areas in mobile communication systems, especially in railway train wireless dispatching, expressway vehicle dispatching and river ship wireless dispatching systems. Background technique [0002] In transportation operations such as railways, highways, and rivers, trains, cars, and ships generally move quickly in one direction for a period of time. Therefore, when implementing wireless scheduling operations, they can move linearly according to the cell coverage. communication system processing. [0003] Taking railway train dispatching as an example to illustrate the problem of calling area restriction in its wireless dispatching system. In the wireless dispatching of railway trains, each dispatcher has a certain dispatching jurisdiction, and each dispatcher has the right to dispatch trains within his jurisdiction. Because the train is ...
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IPC IPC(8): H04Q7/20H04Q7/38H04B7/26H04M3/42H04W48/02
Inventor 王凌云
Owner HUAWEI TECH CO LTD