Method for solving problem of blind base station operation conflicting with protected service through inquiring database
A protected, database technology, applied in access restrictions, electrical components, wireless communications, etc., can solve problems such as no network members, no knowledge of possible or actual interference, etc.
Active Publication Date: 2014-03-19
STMICROELECTRONICS BEIJING R& D
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However, since Service B has no network members within shaded area 32 (or members are not functioning properly to detect interference), base station 22 will not receive interference reports from any network members and thus has no knowledge that it is facing a network member in shaded area 38. Possible or actual interference caused by protected service A
[0010] In general, the blind base station problem exists when each of the following four conditions is met simultaneously: 1. Service B and Service A are simultaneously operating on the same channel (e.g., channel K); A's noise-limited contour 36 overlaps (i.e., the radius of Service B's coverage area plus the radius of Service A's noise-limited contour exceeds the distance between two broadcast stations / base stations); 3. Service B's The base station is outside the coverage area 30 of service A (i.e. the distance between the two broadcast stations / base stations is greater than the radius of the coverage area of service A); There are no network members for Service B in the overlap area (area 32) between coverage areas 30 (or such members are not functioning correctly)
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[0020] Now refer to figure 2 , which illustrates a block diagram of a systematic solution to the blind base station problem. Database 100 is established to maintain updated information regarding the existence and operation of protected services (eg, protected service A). Responsibility for providing and updating the information stored in database 100 preferably rests with the provider of protected service A, however, the provider of service B may also assume this responsibility or may be contracted to a third party. The stored information related to each protected service generally includes information related to attributes, operating channels, operating schedules, the geographic location of the broadcast station, and the coverage radius (ie, coverage area 30) of the service. More detailed information includes the following information for each protected service: service type, operating channel, coverage data, geographic location of broadcast station, operating schedule, and...
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The invention relates to a method for solving problem of blind base station operation conflicting with protected service through inquiring database. The database is used for storing updated information related to protected communication service, the base station which is used for coexisting and is likely to share the same channel and is free of protective communication service inquires the database so as to request geographically related protected identifiers and database stored information relevant to each identifier marked to be protected, returned information is processed by the base station so as to confirm which channel is available for unprotected service, an available channel is marked as a work channel without protective service by the base station, and the base station starts the process of establishing a communication network by unprotected service and a selected work channel.
Description
technical field [0001] The present invention relates to co-channel wireless communication systems and, in particular, to addressing the coexistence problems that cause harmful interference between such co-channel wireless communication systems. Background technique [0002] Now refer to figure 1 , in which a concurrent co-channel wireless communication system is schematically illustrated. The first wireless communication system 10 provides the service A from the broadcasting station 12 through a certain channel K. Service A is "Protected Wireless Telecommunications Service". This means that the channel K through which service A is provided is reserved for service A within a predetermined range (distance) of broadcast station 12 without contention or interference from other services. An example of a protected service, such as Service A, includes a television (TV) broadcast service or an FM radio broadcast service. [0003] The second wireless communication system 20 provi...
Claims
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Inventor 彭震宁
Owner STMICROELECTRONICS BEIJING R& D