Modified time-division transmission technique for digital mobile radio systems
First Claim
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1. A method of transmitting digital radio signal bursts between two remotely located transceivers on a time-division basis, the method comprising the steps of:
- at a first transceiver,(a) receiving a first digital signal burst from a second remote transceiver on a first channel centered on a first radio frequency;
(b) after step (a), transmitting a second digital signal burst to the second remote transceiver on the first channel while concurrently receiving a third digital signal burst from the second remote transceiver on a second channel centered on a second radio frequency during at least a portion of the transmission period of the second signal burst, the second radio frequency being different than the first radio frequency;
(c) after step (b), transmitting a fourth digital signal burst to the second remote transceiver on the second channel while concurrently receiving a fifth digital signal burst from the second remote transceiver on the first channel during at least a portion of the transmission period of the fourth signal burst; and
(d) after step (c), repeating steps (b) and (c) for subsequent digital signal bursts six through nine corresponding in steps (b) and (c) to that of digital signal bursts two through five, respectively.
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Abstract
The present invention relates to a time-division radio transmission technique which uses a modified full-duplex arrangement where two channels are assigned to each two-way link. Simultaneous two-way transmission includes sequential digital symbol bursts between two remote transceivers which alternate between a first and a second channel centered on a first and a second radio frequency, respectively, with each transceiver using a different one of the channels at any instant of time.
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Citations
9 Claims
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1. A method of transmitting digital radio signal bursts between two remotely located transceivers on a time-division basis, the method comprising the steps of:
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at a first transceiver, (a) receiving a first digital signal burst from a second remote transceiver on a first channel centered on a first radio frequency; (b) after step (a), transmitting a second digital signal burst to the second remote transceiver on the first channel while concurrently receiving a third digital signal burst from the second remote transceiver on a second channel centered on a second radio frequency during at least a portion of the transmission period of the second signal burst, the second radio frequency being different than the first radio frequency; (c) after step (b), transmitting a fourth digital signal burst to the second remote transceiver on the second channel while concurrently receiving a fifth digital signal burst from the second remote transceiver on the first channel during at least a portion of the transmission period of the fourth signal burst; and (d) after step (c), repeating steps (b) and (c) for subsequent digital signal bursts six through nine corresponding in steps (b) and (c) to that of digital signal bursts two through five, respectively. - View Dependent Claims (2, 3)
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4. A transceiver capable of communicating with a second remote transceiver using digital radio signal bursts on a time-division basis, the transceiver comprising:
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a transmitter section capable of transmitting sequential digital radio signal bursts to the second transceiver; a receiver section capable of receiving sequential digital radio signal bursts from the second transceiver; and means connected to the transmitter and receiver sections capable of implementing two-way communication with the second transceiver wherein sequential signal bursts to and from the second transceiver alternate between a first and a second channel centered on a first and a second radio frequency, respectively, with each direction of transmission using a different one of the two channels at any instant of time. - View Dependent Claims (5, 6, 7, 8, 9)
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Specification