Shifted training sequences in a communications system
First Claim
1. A method performed by a communications device comprising:
- receiving an identification of a first transceiver over a wireless communications channel;
selecting a core training sequence based on the received identification;
receiving a spatial channel assignment from the first transceiver;
selecting a shift indicator using the spatial channel assignment, the shift indicator indicating a number of symbols that the core training sequence stored in a memory of the communications device is to be shifted;
generating a shifted training sequence by shifting the core training sequence by the number of symbols indicated by the selected shift indicator, andcommunicating from a second transceiver of the communications device on the assigned communications channel using the shifted training sequence.
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Accused Products
Abstract
Embodiments of the present invention can be used to select a training sequence used by a base station and a user terminal for communications. In one embodiment, selecting the training sequence to use includes first selecting a training sequence from a set of training sequences. Then, a shift indicator is received, the shift indicator indicating a number of symbols the training sequence is to be shifted. A shifted training sequence is generated by shifting the selected training sequence by the number indicated by the received shift indicator, and the shifted training sequence is used for communication with a first transceiver on a communications channel. In another embodiment, a shift indicator indicating a number of symbols a training sequence is to be shifted is first selected, and then used to generate a shifted training sequence by shifting the training sequence by the number of symbols indicated by the selected shift indicator. The shifted training sequence is then used for communicating with a transceiver on a communications channel.
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Citations
33 Claims
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1. A method performed by a communications device comprising:
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receiving an identification of a first transceiver over a wireless communications channel; selecting a core training sequence based on the received identification; receiving a spatial channel assignment from the first transceiver; selecting a shift indicator using the spatial channel assignment, the shift indicator indicating a number of symbols that the core training sequence stored in a memory of the communications device is to be shifted; generating a shifted training sequence by shifting the core training sequence by the number of symbols indicated by the selected shift indicator, and communicating from a second transceiver of the communications device on the assigned communications channel using the shifted training sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A communications device comprising:
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a processor to; receive an identification of a first transceiver over a wireless communications channel; select a core training sequence based on the received identification; receive a spatial channel assignment from the first transceiver; select a shift indicator using the spatial channel assignment, the shift indicator indicating a number of symbols that the core training sequence is to be shifted; and generate a shifted training sequence by shifting the core training sequence by the number of symbols indicated by the selected shift indicator; and a second transceiver to communicate with the first transceiver on the assigned communications channel using the shifted training sequence. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A machine-readable medium having stored thereon data representing instructions that, when executed by a processor, cause the processor to perform operations comprising:
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receiving an identification of a first transceiver over a wireless communications channel; selecting a core training sequence based on the received identification; receiving a spatial channel assignment from the first transceiver; selecting a shift indicator using the spatial channel assignment, the shift indicator indicating a number of symbols that the core training sequence stored in a memory of the communications device is to be shifted; generating a shifted training sequence by shifting the core training sequence by the number of symbols indicated by the selected shift indicator; and
communicating from a second transceiver of the communications device on the assigned communications channel using the shifted training sequence. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33)
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Specification