Predictive collision avoidance in macrodiverse wireless networks with frequency hopping using switching
First Claim
1. A communication system for communication using wireless signals including downlink signals to and uplink signals from mobile stations, comprising,hopping control means for indicating frequency hopping sequences for said downlink signals and said uplink signals,a plurality of transceiver stations having broadcast channels and dedicated channels carried by said wireless signals,zone manager means including,hopping extraction means for extracting frequency hopping information from said hopping control means,collision prediction means forming predictions of radio channel interference between dedicated channels,switching control means responsive to said predictions for dynamic switching of said dedicated channels so as to avoid said interference;
- wherein said collision prediction means tracks hopping frequencies for multiple mobile stations for a prediction period.
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Abstract
A communication system using fast macrodiversity switching (FMS) and frequency hopping (FH) for wireless signals including downlink signals to and uplink signals from mobile stations. Frequency hopping sequences are determined for the uplink and downlink signals for the mobile stations. A plurality of transceiver stations employ broadcast channels and dedicated channels for communications with the mobile stations. A zone manager controls fast macrodiversity switching of dedicated channels among the mobile stations while broadcast channels remain unswitched. The zone manager extracts frequency hopping information to form predictions of dedicated channel collisions, and based upon the predictions, controls the dynamic switching of dedicated channels to avoid collisions.
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Citations
22 Claims
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1. A communication system for communication using wireless signals including downlink signals to and uplink signals from mobile stations, comprising,
hopping control means for indicating frequency hopping sequences for said downlink signals and said uplink signals, a plurality of transceiver stations having broadcast channels and dedicated channels carried by said wireless signals, zone manager means including, hopping extraction means for extracting frequency hopping information from said hopping control means, collision prediction means forming predictions of radio channel interference between dedicated channels, switching control means responsive to said predictions for dynamic switching of said dedicated channels so as to avoid said interference; wherein said collision prediction means tracks hopping frequencies for multiple mobile stations for a prediction period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A communication system for communication using wireless signals including downlink signals to and uplink signals from mobile stations, comprising,
hopping control means for indicating frequency hopping sequences for said downlink signals and said uplink signals, a plurality of transceiver stations having broadcast channels and dedicated channels carried by said wireless signals, zone manager means including, hopping extraction means for extracting frequency hopping information from said hopping control means, collision prediction means forming predictions of radio channel interference between dedicated channels, switching control means responsive to said predictions for dynamic switching of said dedicated channels so as to avoid said interference; -
wherein, said plurality of transceiver stations include a home transceiver station and one or more assistant transceiver stations, said zone manager means includes multiple discrete zone managers including a home zone manager for said home transceiver station for controlling the dedicated channels for particular mobile stations and one or more assistant zone managers for said assistant transceiver stations for controlling dedicated channels for ones of said particular mobile stations switched to said one or more assistant transceiver stations, said collision prediction means for said home zone manager compares the hopping frequencies of radio resources for said particular mobile stations to predict radio channel interference between dedicated channels for said particular mobile stations and other mobile stations.
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12. A communication system for communication using wireless signals including downlink signals to and uplink signals from mobile stations, comprising,
hopping control means for indicating frequency hopping sequences for said downlink signals and said uplink signals, a plurality of transceiver stations having broadcast channels and dedicated channels carried by said wireless signals, zone manager means including, hopping extraction means for extracting frequency hopping information from said hopping control means, collision prediction means forming predictions of radio channel interference between dedicated channels, switching control means responsive to said predictions for dynamic switching of said dedicated channels so as to avoid said interference; -
wherein, said plurality of transceiver stations includes first and second home transceiver stations and one or more assistant transceiver stations, said zone manager means includes multiple discrete zone managers including first and second home zone managers for said first and second home transceiver stations for controlling the dedicated channels for first particular mobile stations and for second particular mobile stations, respectively, and one or more assistant zone managers for said one or more assistant transceiver stations, respectively, for controlling dedicated channels for ones of said first particular mobile stations and ones of said second particular mobile stations switched to one or more of said assistant transceiver stations, said collision prediction means for said first home zone manager compares the hopping frequencies of radio resources for said first particular mobile stations and for said second particular mobile stations to predict radio channel interference among dedicated channels for said first particular mobile stations and for said second particular mobile stations. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A communication system for communication using wireless signals including downlink signals to and uplink signals from mobile stations, comprising,
hopping control means for indicating frequency hopping sequences for said downlink signals and said uplink signals, a plurality of transceiver stations having broadcast channels and dedicated channels carried by said wireless signals, zone manager means including, hopping extraction means for extracting frequency hopping information from said hopping control means, collision prediction means forming predictions of radio channel interference between dedicated channels, switching control means responsive to said predictions for dynamic switching of said dedicated channels so as to avoid said interference; wherein a particular mobile station, MSi communicates on a traffic channel, TCHi, with a transceiver station, BTSi, using hopping sequence, FHSi, and an offset, MAIOj, and wherein another particular mobile station, MSj, communicates on traffic channel, TCHj, with a transceiver station, BTSj, using hopping sequence, FHSj, and offset, MAIOj and wherein said collision prediction means forms predictions of radio channel interference between traffic channel, TCHi, and traffic channel, TCHj, when traffic channel, TCHj is a candidate to switch to transceiver station, BTSi, and wherein said switching control means is responsive to said predictions for dynamic switching of said and traffic channel, TCHj, so as to avoid said interference.
Specification