Operating time division duplex (TDD) wireless systems in paired spectrum (FDD) allocations
First Claim
1. A method of operating a wireless communication system, the method comprising:
- transmitting information from a wireless communications device during a first period in a first band;
receiving information at the wireless communications device during the first period in a second band;
transmitting information from the wireless communications device during a second period in the second band;
receiving information at the wireless communications device during the second period in the first band; and
determining at least one of a spatial signature or copy weights corresponding to the first and second bands from the received information in the first band and the second band.
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0 Petitions
Accused Products
Abstract
A wireless communication system operates in a combined FDD and TDD mode. During a first time period, data may be transmitted at a first frequency band and received at a second frequency band. During a second time period, data is transmitted at the second frequency band and received at the first frequency band. The first and second time periods may be of identical durations, thereby creating a 50% duty cycle. When the base station operates with multiple frequency bands, spatial processing parameters such as the spatial signature or copy weights of the mobile stations may be collected in all frequency bands, thereby allowing the full processing advantage of adaptive antenna.
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Citations
25 Claims
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1. A method of operating a wireless communication system, the method comprising:
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transmitting information from a wireless communications device during a first period in a first band; receiving information at the wireless communications device during the first period in a second band; transmitting information from the wireless communications device during a second period in the second band; receiving information at the wireless communications device during the second period in the first band; and determining at least one of a spatial signature or copy weights corresponding to the first and second bands from the received information in the first band and the second band. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of obtaining spatial processing signal processing parameters in a wireless communication system, the method comprising:
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transmitting information from a first terminal and receiving at a second terminal during a first period in a first band; transmitting information from the second terminal and receiving at the first terminal during the first period in a second band; transmitting information from the first terminal and receiving at the second terminal during a second period in the second band; transmitting information from the second terminal and receiving at the first terminal during the second period in the first band; and determining the spatial signature or copy weights or both corresponding to both frequency bands of the second terminal from the received information in both the first band and the second band. - View Dependent Claims (8, 9, 10, 11)
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- 12. A wireless communication system comprising a base station that transmits information in a first band and receives information in a second band during a first period and transmits information in the second band and receives information in the first band during the second period, wherein the system determines at least one of spatial signature or copy weights corresponding to the first and second bands from the received information in the first band and the second band.
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17. A wireless communication system comprising:
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a first terminal that transmits in the second band and receives in the first band during a first period and transmits in the first band and receives in the second band during the second period; and a second terminal that transmits in a first band and receives in a second band during a first period and transmits in the second band and receives in the first band during the second period, wherein the second terminal is configured to determine the spatial signature or copy weights or both of the first terminal in the first band and the second band. - View Dependent Claims (18, 19, 20)
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21. A method of facilitating wireless communication comprising:
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establishing between a first terminal and a second terminal a communication link having at least two frequency channels; controlling the two frequency channels such that (i) a first frequency channel transmits data from the first terminal to the second terminal while a second frequency channel transmits data from the second terminal to the first terminal, and (ii) the second frequency channel transmits data from the first terminal to the second terminal while the first frequency channel transmits data from the second terminal to the first terminal; and determining at least one of the spatial signature or copy weights of the first terminal from the received data in the first frequency band and the second frequency band. - View Dependent Claims (22, 23, 24, 25)
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Specification