Shared signaling channel
First Claim
1. A method of generating signaling channel messages in a wireless communication system including a plurality of sub-carriers spanning at least a portion of an operating frequency band, the method comprising:
- assigning resources in a predetermined bandwidth to a signaling channel;
generating at least one message;
encoding the at least one message to generate at least two message symbols comprising a first message symbol and a second message symbol;
controlling a power density of the at least two message symbols; and
modulating at least a portion of the resources assigned to the signaling channel, the modulating comprisingmodulating at least a first sub-carrier assigned to the signaling channel with the first message symbol, andmodulating at least a second sub-carrier assigned to the signaling channel with the second message symbol.
1 Assignment
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Accused Products
Abstract
A shared signaling channel can be used in an Orthogonal Frequency Division Multiple Access (OFDMA) communication system to provide signaling, acknowledgement, and power control messages to access terminals within the system. The shared signaling channel can be assigned to a predetermined number of sub-carriers within any frame. The assignment of a predetermined number of sub-carriers to the shared signaling channel establishes a fixed bandwidth overhead for the channel. The actual sub-carriers assigned to the channel can be varied periodically, and can vary according to a predetermined frequency hopping schedule. The amount of signal power allocated to the signaling channel can vary on a per symbol basis depending on the power requirements of the communication link. The shared signaling channel can direct each message carried on the channel to one or more access terminals. Unicast messages allow the channel power to be controlled per the needs of individual communication links.
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Citations
78 Claims
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1. A method of generating signaling channel messages in a wireless communication system including a plurality of sub-carriers spanning at least a portion of an operating frequency band, the method comprising:
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assigning resources in a predetermined bandwidth to a signaling channel; generating at least one message; encoding the at least one message to generate at least two message symbols comprising a first message symbol and a second message symbol; controlling a power density of the at least two message symbols; and modulating at least a portion of the resources assigned to the signaling channel, the modulating comprising modulating at least a first sub-carrier assigned to the signaling channel with the first message symbol, and modulating at least a second sub-carrier assigned to the signaling channel with the second message symbol. - 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)
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24. A method of generating signaling channel messages in a wireless communication system including a plurality of sub-carriers spanning at least a portion of an operating frequency band, the method comprising:
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generating at least one message for a signaling channel; encoding the at least one message to generate at least one message symbol; adjusting a power density associated with the at least one message symbol; determining a subset of sub-carriers assigned to the signaling channel from the plurality of sub-carriers; and modulating the subset of sub-carriers with the at least one message symbol. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. An apparatus configured to generate signaling channel messages in a wireless communication system including a plurality of sub-carriers spanning at least a portion of an operating frequency band, the apparatus comprising:
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means for generating at least one message for a signaling channel; means for encoding the at least one message to generate at least one message symbol; means for adjusting a power density associated with the at least one message symbol; means for determining a subset of sub-carriers assigned to the signaling channel from the plurality of sub-carriers; and means for modulating the subset of sub-carriers with the at least one message symbol. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45)
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46. An apparatus for generating messages in a wireless communication system including a plurality of sub-carriers spanning at least a portion of an operating frequency band, the apparatus comprising:
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means for assigning resources in a predetermined bandwidth to a signaling channel; means for generating at least one message; means for encoding the at least one message to generate at least two message symbols comprising a first message symbol and a second message symbol; means for controlling a power density of the at least two message symbols; and means for modulating at least a portion of the resources assigned to the signaling channel, the means for modulating comprising means for modulating at least a first sub-carrier assigned to the signaling channel with the first message symbol, and means for modulating at least a second sub-carrier assigned to the signaling channel with the second message symbol. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. A non-transitory computer-readable medium encoded with a computer program for a wireless communication system including a plurality of sub-carriers spanning at least a portion of an operating frequency band, comprising:
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instructions for assigning resources in a predetermined bandwidth to a signaling channel; instructions for generating at least one message; instructions for encoding the at least one message to generate at least two message symbols comprising a first message symbol and a second message symbol; instructions for controlling a power density of the at least two message symbols; and instructions for modulating at least a portion of the resources assigned to the signaling channel, the instructions for modulating comprising instructions for modulating at least a first sub-carrier assigned to the signaling channel with the first message symbol, and instructions for modulating at least a second sub-carrier assigned to the signaling channel with the second message symbol.
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58. A non-transitory computer-readable medium encoded with a computer program for a wireless communication system including a plurality of sub-carriers spanning at least a portion of an operating frequency band, comprising:
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instructions for generating at least one message; instructions for encoding the at least one message to generate at least one message symbol; instructions for adjusting a power density associated with the at least one message symbol; instructions for determining a subset of sub-carriers assigned to a signaling channel from the plurality of sub-carriers; and instructions for modulating the subset of sub-carriers with the at least one message symbol.
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59. An apparatus configured to generate signaling channel messages in a wireless communication system including a plurality of sub-carriers spanning at least a portion of an operating frequency band, the apparatus comprising:
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at least one processor configured to generate at least one message for a signaling channel, to encode the at least one message to generate at least one message symbol, to adjust a power density associated with the at least one message symbol, to determine a subset of sub-carriers assigned to the signaling channel from the plurality of sub-carriers, and to modulate the subset of sub-carriers with the at least one message symbol; and a data buffer configured to store data for the at least one message. - View Dependent Claims (60, 61, 62, 63, 64, 65, 66, 67)
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68. An apparatus for generating messages in a wireless communication system including a plurality of sub-carriers spanning at least a portion of an operating frequency band, the apparatus comprising:
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at least one processor configured to assign resources in a predetermined bandwidth to a signaling channel, to generate at least one message, to encode the at least one message to generate at least two message symbols comprising a first message symbol and a second message symbol, to control a power density of the at least two message symbols, to modulate at least a portion of the resources assigned to the signaling channel, to modulate at least a first sub-carrier assigned to the signaling channel with the first message symbol, and to modulate at least a second sub-carrier assigned to the signaling channel with the second message symbol; and a data buffer configured to store data for the at least one message. - View Dependent Claims (69, 70, 71, 72, 73, 74, 75, 76, 77, 78)
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Specification