System and method for increasing cellular system capacity by the use of the same frequency and time slot for both uplink and downlink transmissions
First Claim
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1. A method for increasing cellular system capacity, comprising the steps of:
- receiving a signal in a time slot in a frequency band;
transmitting a signal simultaneously with said received signal in the same time slot and frequency band;
using an adaptive self-interference canceller to reduce the radio frequency self-interference created by receiving and transmitting signals in the time slot; and
using a circulator, the circulator being connected between an antenna, a receiver, and a transmitter.
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Abstract
A method for increasing cellular system capacity includes receiving a signal in a time slot and a frequency band and transmitting a signal in the same time slot and the same frequency band. An adaptive self-interference canceller is used to reduce the radio frequency self-interference created by receiving and transmitting signals in the same time slot and the same frequency band. The self-interference can be further reduced by using: (1) a circulator connected between an antenna, a receiver, and a transmitter; (2) separate antennas for receiving and transmitting signals can be used; and/or (3) an adaptive antenna.
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Citations
11 Claims
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1. A method for increasing cellular system capacity, comprising the steps of:
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receiving a signal in a time slot in a frequency band; transmitting a signal simultaneously with said received signal in the same time slot and frequency band; using an adaptive self-interference canceller to reduce the radio frequency self-interference created by receiving and transmitting signals in the time slot; and using a circulator, the circulator being connected between an antenna, a receiver, and a transmitter. - View Dependent Claims (2, 3, 4, 5)
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6. A system for increasing cellular system capacity, comprising:
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an antenna; a receiver section connected to said antenna, said receiver section receiving a signal; a transmitter section connected to said antenna, said transmitter section transmitting a signal; an adaptive self-interference canceller connected between said receiver section and said transmitter section, said adaptive self-interference canceller reducing radio frequency self-interference created when said receiver section receives a signal and said transmitter section simultaneously transmits a signal in the same time slot and the same frequency band; and a circulator connected between said antenna, said receiver section, and said transmitter section. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification