Dual-mode shared OFDM methods/transmitters, receivers and systems
First Claim
Patent Images
1. A wireless terminal for communicating over a shared OFDM band, the wireless terminal comprising:
- a first transmit chain configured to generate and transmit a low rate mode OFDM transmission in a first frequency band of the shared OFDM band in a first subset of a plurality of OFDM transmission intervals; and
a second transmit chain configured to generate and transmit a burst-mode transmission in a second frequency band of the shared OFDM band in a second subset of the plurality of OFDM transmission intervals,the first subset of the plurality of OFDM transmission intervals having at least one OFDM transmission interval in common with the second subset of the plurality of OFDM transmission intervals,wherein for the at least one OFDM transmission interval common between the first subset and the second subset, the first frequency band is non-overlapping in frequency with the second frequency band.
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Abstract
A wireless terminal and network terminal are provided for implementing a new uplink OFDM protocol. In the new protocol, the wireless terminal has a first transmit chain for generating and transmitting a low rate mode OFDM transmission in a first frequency band of the OFDM band; and a second transmit chain for generating and transmitting a burst-mode transmission in a second frequency band of the OFDM band, the first frequency band being distinct from the second frequency band. An access channel is provided which is overlaid over the low rate mode transmissions of other users.
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Citations
76 Claims
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1. A wireless terminal for communicating over a shared OFDM band, the wireless terminal comprising:
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a first transmit chain configured to generate and transmit a low rate mode OFDM transmission in a first frequency band of the shared OFDM band in a first subset of a plurality of OFDM transmission intervals; and a second transmit chain configured to generate and transmit a burst-mode transmission in a second frequency band of the shared OFDM band in a second subset of the plurality of OFDM transmission intervals, the first subset of the plurality of OFDM transmission intervals having at least one OFDM transmission interval in common with the second subset of the plurality of OFDM transmission intervals, wherein for the at least one OFDM transmission interval common between the first subset and the second subset, the first frequency band is non-overlapping in frequency with the second frequency band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A wireless terminal for communicating over a shared OFDM band, the wireless terminal comprising:
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a first transmit chain for generating and transmitting a low rate mode OFDM transmission in a first frequency band of the shared OFDM band, the first transmit chain comprises a hopping pattern generator which causes the first frequency band to hop around in frequency within a first subset of the shared OFDM band allocated for low rate mode OFDM transmission, wherein for at least a subset of a plurality of OFDM transmission intervals, a second subset of the shared OFDM band is allocated for burst-mode transmission, and the first subset of the shared OFDM band allocated for low rate mode OFDM transmission in the at least a subset of the plurality of OFDM transmission intervals is non-overlapping in frequency with the second subset of the shared OFDM band allocated for burst-mode OFDM transmission. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. A network terminal for receiving communications over a shared OFDM band, the network terminal comprising:
a receiver for receiving burst-mode OFDM transmissions over a first frequency of the shared OFDM band in a first frequency of a plurality of OFDM transmission intervals and for receiving low rate mode OFDM transmissions over a second subset of the shared OFDM band in a second subset of the plurality of OFDM transmission intervals, the first subset of the plurality of OFDM transmission intervals having at least one OFDM transmission interval in common with the second subset of the plurality of OFDM transmission intervals, the first subset of the shared OFDM band being non-overlapping in frequency with the second subset of the shared OFDM band. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74)
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75. A method of communicating over a shared OFDM band comprising:
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generating and transmitting a low rate mode OFDM transmission in a first frequency band of the shared OFDM band in a first subset of a plurality of OFDM transmission intervals; and generating and transmitting a burst-mode OFDM transmission in a second frequency band of the shared OFDM band in a second subset of the plurality of OFDM transmission intervals, the first subset of the plurality of OFDM transmission intervals having at least one OFDM transmission interval in common with the second subset of the plurality of OFDM transmission intervals, wherein for the at least one OFDM transmission interval common between the first subset and the second subset, the first frequency band is non-overlapping in frequency with the second frequency band. - View Dependent Claims (76)
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Specification