Time division multiple access radio communication system
First Claim
1. A radio communication system comprising a base station and a plurality of mobile stations for performing communications by Time Division Multiple Access (TDMA) with a certain number of time slots per one frame, wherein said base station and said plurality of mobile stations start performing a communication by TDMA with an initial assignment of said certain number of time slots per one frame, said base station comprising:
- a time slot reassigning means for reassigning a required number of time slots to each of said plurality of mobile stations;
a reassignment notifying means for sending information of said time slots reassigned by said time slot reassigning means to each of said plurality of mobile stations;
a first TDMA means for performing multiple communications with each of said plurality of mobile stations by controlling switching of an operation mode between a transmission mode and a reception mode and by controlling timing for switching said operation mode according to said information of said time slots; and
a transmission rate calculating means for calculating an actual transmission rate of communication data for each time slot, wherein said actual transmission rate is a ratio of a data amount having been actually transmitted to a data amount that can be transmitted in a unit time,and each mobile station comprising;
a reassignment obtaining means for obtaining said information of said time slots form said base station; and
a second TDMA means for performing multiple communications with said base station by controlling switching of said operation mode between said transmission mode and said reception mode and by controlling timing for switching said operation mode according to said information of said time slots, whereinsaid time slot reassigning means reassigns said required number of time slots to said mobile stations based on said actual transmission rate calculated by said transmission rate calculating means.
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Accused Products
Abstract
A radio communication system for performing communications between a base station and mobile stations by Time Division Multiple Access (TDMA) with a certain number of time slots in a frame. The distribution of time slots can be changed based on transmission rate, error occurrence rate, instruction of operators, etc. Communications can be performed using appropriate number of time slots.
157 Citations
12 Claims
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1. A radio communication system comprising a base station and a plurality of mobile stations for performing communications by Time Division Multiple Access (TDMA) with a certain number of time slots per one frame, wherein said base station and said plurality of mobile stations start performing a communication by TDMA with an initial assignment of said certain number of time slots per one frame, said base station comprising:
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a time slot reassigning means for reassigning a required number of time slots to each of said plurality of mobile stations; a reassignment notifying means for sending information of said time slots reassigned by said time slot reassigning means to each of said plurality of mobile stations; a first TDMA means for performing multiple communications with each of said plurality of mobile stations by controlling switching of an operation mode between a transmission mode and a reception mode and by controlling timing for switching said operation mode according to said information of said time slots; and a transmission rate calculating means for calculating an actual transmission rate of communication data for each time slot, wherein said actual transmission rate is a ratio of a data amount having been actually transmitted to a data amount that can be transmitted in a unit time, and each mobile station comprising; a reassignment obtaining means for obtaining said information of said time slots form said base station; and a second TDMA means for performing multiple communications with said base station by controlling switching of said operation mode between said transmission mode and said reception mode and by controlling timing for switching said operation mode according to said information of said time slots, wherein said time slot reassigning means reassigns said required number of time slots to said mobile stations based on said actual transmission rate calculated by said transmission rate calculating means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification