Asymmetric TDD in flexible use spectrum
First Claim
1. A method, comprising:
- sending a first signal over an asymmetric time division duplex (TDD) communication path via a first portion of a first frequency band, the first frequency band being immediately adjacent to a second frequency band and a third frequency band, the first frequency band being different from the second frequency band and the third frequency band, the second frequency band including a frequency division duplex (FDD) communication path, the third frequency band including a TDD communication path; and
receiving a second signal over the asymmetric TDD communication path via a second portion of the first frequency band different from the first portion of the first frequency band.
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Abstract
A method according to an embodiment of the invention includes receiving and transmitting signals over a time division duplex (TDD) communication path. Signals are received over the TDD communication path via a first portion of a first frequency band. The first frequency band is adjacent to a second frequency band and to a third frequency band. The first frequency band is different from the second frequency band and from the third frequency band. A first frequency division duplex (FDD) communication path can be operable in the second frequency band. A second FDD communication path can be operable in the third frequency band. Signals are transmitted over the TDD communication path via a second portion of the first frequency band that is different from the first portion of the first frequency band.
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Citations
21 Claims
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1. A method, comprising:
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sending a first signal over an asymmetric time division duplex (TDD) communication path via a first portion of a first frequency band, the first frequency band being immediately adjacent to a second frequency band and a third frequency band, the first frequency band being different from the second frequency band and the third frequency band, the second frequency band including a frequency division duplex (FDD) communication path, the third frequency band including a TDD communication path; and receiving a second signal over the asymmetric TDD communication path via a second portion of the first frequency band different from the first portion of the first frequency band. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus, comprising:
a communication device configured to send a signal over a first time division duplex (TDD) communication path via a portion of a first frequency band, the first frequency band being disposed between and mutually exclusive of a second frequency band and a third frequency band, the second frequency band including a frequency division duplex (FDD) downlink and the third frequency band including a second TDD communication path, the portion of the first frequency band being contiguous with the third frequency band, the portion of the first frequency band being separated from the second frequency band by a guard band. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus, comprising:
a communication device configured to send a first signal over a first time division duplex (TDD) communication path via a first portion of a first frequency band, the communication device configured to receive a second signal over the first TDD communication path via a second portion of the first frequency band, the first frequency band being disposed between a second frequency band and a third frequency band, the second frequency band including a frequency division duplex (FDD) communication path, the third frequency band including a second TDD communication path, the first portion of the first frequency band being different than the second portion of the first frequency band wherein the first portion of the first frequency band has a bandwidth larger than a bandwidth of the second portion of the first frequency band. - View Dependent Claims (18, 19, 20, 21)
Specification