Unused time slot detection and selection in a mobile radio communication system
First Claim
1. A mobile radio communication apparatus connectable to a base station over channels of radio frequencies each having a frame format including a plurality of time slots, said mobile radio communication apparatus comprising:
- an antenna for transmitting and receiving signals at the radio frequencies;
unused time slot detecting means coupled to said antenna for detecting unused time slots of a radio frequency by detecting the reception field intensity of said signals received at said antenna;
time slot selecting means coupled to said unused time slot detecting means for selecting one of the unused time slots; and
channel establishing means for establishing a channel between said mobile radio communication apparatus and said base station in accordance with the radio frequency and the selected time slot.
2 Assignments
0 Petitions
Accused Products
Abstract
A mobile radio communication system includes a plurality of base stations connected to a network through wire lines, and a plurality of mobile stations connected to the base stations through radio channels. The base and mobile stations share a plurality of radio frequencies and transmit at least one transmission signal at one of the shared radio frequencies. The transmission signal is arranged into time frames each having a plurality of time-division multiplexed slots. The base and mobile stations both include a control circuit having means for detecting unused time slots within the transmission signal and means for selecting one of the unused time slots. A radio channel establishing circuit establishes a channel between the mobile radio communication apparatus and the base station in accordance with the selected time slot.
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Citations
11 Claims
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1. A mobile radio communication apparatus connectable to a base station over channels of radio frequencies each having a frame format including a plurality of time slots, said mobile radio communication apparatus comprising:
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an antenna for transmitting and receiving signals at the radio frequencies; unused time slot detecting means coupled to said antenna for detecting unused time slots of a radio frequency by detecting the reception field intensity of said signals received at said antenna; time slot selecting means coupled to said unused time slot detecting means for selecting one of the unused time slots; and channel establishing means for establishing a channel between said mobile radio communication apparatus and said base station in accordance with the radio frequency and the selected time slot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A mobile radio communication system, comprising:
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a wire network of telephones connected to each other through wire lines; a base station connected to said wire network through a wire line; a mobile radio communication apparatus connectable to said base station over channels of radio frequencies each having a frame format including a plurality of time slots, wherein at least one of said base station and said mobile radio communication apparatus comprises; an antenna for transmitting and receiving signals at the radio frequencies; unused time slot detecting means coupled to said antenna for detecting unused time slots of a radio frequency by detecting the reception field intensity of said signals received at said antenna; time slot selecting means coupled to said unused time slot detecting means for selecting one of the unused time slots; and channel establishing means for establishing a channel between said mobile radio communication apparatus and said base station in accordance with the radio frequency and the selected time slot.
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Specification