Cascade calling method for DMR system
A call method and system-level technology, applied in electrical components, wireless communication, network topology, etc., can solve the problems of loss of private network communication privacy, unusable private network, cost, etc., and achieve easy-to-understand and stable frequency planning Sexuality and the effect of ensuring privacy
Inactive Publication Date: 2017-05-31
SHAANXI FENGHUO IND
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Problems solved by technology
Some systems use IP networks to connect multiple repeaters to expand the call range, but this requires renting the operator's public network, which loses the privacy of private network communications, and once the public network is paralyzed, the private network It will also be unusable and lose the stability of private network communication. After most private network systems are completed, there will be no monthly rent and usage fees. cost
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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0027] An embodiment of the present invention provides a DMR system cascade call method, such as figure 1 As shown, the DMR system includes N repeaters, and the N repeaters are sequentially recorded as the first repeater to the Nth repeater, and the first to the Nth repeater are sequentially connected by communication, and each There are multiple terminal devices wirelessly connected to a repeater, and each terminal device has a unique address number, and N is...
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The invention belongs to the technical field of communication and discloses a cascade calling method for a DMR system. The method comprises the following steps that a first terminal device is supposed to initial a call, the first terminal device sends a calling signal to a relay station connected to the first terminal device, and the relay station is marked as the ith relay station; the first terminal device is any one terminal device in the DMR system; the ith relay station forwards the calling signal to other relay stations until all relay stations and all other terminal devices connected to each relay station receive the calling signal; and all other terminal devices determine whether to participate in communication according to an address number in the calling signal. According to the method, the calling range of the terminal device can be expanded.
Description
technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a DMR system cascading calling method, which is applicable to the fields of mobile communication, cluster private network communication and the like. Background technique [0002] With the increasingly widespread application of cluster private network communication, people have higher and higher requirements for coverage. However, most of the DMR systems currently in use are mostly in the operation mode of a single relay station, and the coverage is limited. Some systems use IP networks to connect multiple repeaters to expand the call range, but this requires renting the operator's public network, which loses the privacy of private network communications, and once the public network is paralyzed, the private network It will also be unusable and lose the stability of private network communication. After most private network systems are completed, there will be no...
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IPC IPC(8): H04W40/02H04W68/08H04W84/08
CPCH04W40/02H04W68/08H04W84/08
Inventor 李浩星王勉李辉梁春龙李云龙
Owner SHAANXI FENGHUO IND