Enhanced uplink rate indicator
First Claim
1. A method of indicating an uplink data rate for a first transmission segment in an OFDM wireless communication environment, comprising operating a communications device to perform the steps of:
- determining a first rate option to be used in the first transmission segment;
encoding information bits to coded bits and mapping coded bits to modulation symbols in accordance with the first rate option;
identifying a first predetermined subset and a second predetermined subset of tone-symbols in the first transmission segment as a function of the first rate option, wherein a tone-symbol is a tone in an OFDM symbol period and tones are indexed in a logical order;
mapping the modulation symbols to the tone-symbols of the first transmission segment;
power-scaling a modulation symbol mapped to a tone-symbol of the first predetermined subset with a first parameter;
power-scaling a modulation symbol mapped to a tone-symbol of the second predetermined subset with a second parameter, the second parameter being different from the first parameter;
transmitting the first transmission segment;
wherein said first transmission segment includes multiple tone-symbols in each of a plurality of consecutive symbol transmission time periods; and
wherein said first predetermined subset of tone-symbols includes more tone-symbols than said second predetermined subset of tone-symbols.
1 Assignment
0 Petitions
Accused Products
Abstract
The claimed subject matter relates to providing uplink data rate option information in an uplink traffic channel segment. A wireless terminal may indicate a data rate option being used for the segment via an energy pattern applied to the tone-symbols of the segment. To indicate a first data rate option, additional energy may be applied to a first set of tone-symbols of the segment. To indicate a second rate option, additional energy may be applied to a second set of tone-symbols of the segment, the second set being different from the first set. According to some aspects, each implemented energy pattern may be represented by a pattern, which has a slope (e.g., in a logical, pre-hopped representation of the channel segment), where some of the patterns have positive slope and some of the patterns have negative slope. The use of positive and negative slopes facilitates the representation of more data rate options than would be possible if only one type of slope (positive or negative) for the energy pattern were utilized.
-
Citations
60 Claims
-
1. A method of indicating an uplink data rate for a first transmission segment in an OFDM wireless communication environment, comprising operating a communications device to perform the steps of:
-
determining a first rate option to be used in the first transmission segment; encoding information bits to coded bits and mapping coded bits to modulation symbols in accordance with the first rate option; identifying a first predetermined subset and a second predetermined subset of tone-symbols in the first transmission segment as a function of the first rate option, wherein a tone-symbol is a tone in an OFDM symbol period and tones are indexed in a logical order; mapping the modulation symbols to the tone-symbols of the first transmission segment; power-scaling a modulation symbol mapped to a tone-symbol of the first predetermined subset with a first parameter; power-scaling a modulation symbol mapped to a tone-symbol of the second predetermined subset with a second parameter, the second parameter being different from the first parameter; transmitting the first transmission segment; wherein said first transmission segment includes multiple tone-symbols in each of a plurality of consecutive symbol transmission time periods; and wherein said first predetermined subset of tone-symbols includes more tone-symbols than said second predetermined subset of tone-symbols. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 24, 25, 26, 27)
-
-
17. An apparatus that facilitates indicating an uplink data rate for transmission segments in an OFDM wireless communication environment, comprising:
-
a processor that determines a first rate option to be used in a first transmission segment, and identifies a first predetermined subset and a second predetermined subset of tone-symbols in the first transmission segment as a function of the first rate option, wherein a tone-symbol is a tone in an OFDM symbol period and tones are indexed in a logical order; an encoder that encodes information bits to coded bits, maps coded bits to modulation symbols in accordance with the first rate option, and maps the modulation symbols to the tone-symbols of the first transmission segment; a transmitter that power-scales a modulation symbol mapped to a tone-symbol of the first predetermined subset with a first parameter, power-scales a modulation symbol mapped to a tone-symbol of the second predetermined subset with a second parameter, the second parameter being different from the first parameter, and transmits the first transmission segment wherein said first transmission segment includes multiple tone-symbols in each of a plurality of consecutive symbol transmission time periods; and wherein said first predetermined subset of tone-symbols includes more tone-symbols than said second predetermined subset of tone-symbols. - View Dependent Claims (18, 19, 20, 21, 22, 23)
-
-
28. An apparatus that facilitates indicating an uplink data rate for transmission segments in an OFDM wireless communication environment, comprising:
-
means for determining a rate option to be used in a first transmission segment; means for encoding information bits to coded bits and mapping coded bits to modulation symbols in accordance with the first rate option; means for identifying a first predetermined subset and a second predetermined subset of tone-symbols in the first transmission segment as a function of the first rate option, wherein a tone-symbol is a tone in an OFDM symbol period and tones are indexed in a logical order; means for mapping the modulation symbols to the tone-symbols of the first transmission segment; means for power-scaling a modulation symbol mapped to a tone-symbol of the first predetermined subset with a first parameter; means for power-scaling a modulation symbol mapped to a tone-symbol of the second predetermined subset with a second parameter, the second parameter being different from the first parameter; means for transmitting the first transmission segment; wherein said first transmission segment includes multiple tone-symbols in each of a plurality of consecutive symbol transmission time periods; and wherein said first predetermined subset of tone-symbols includes more tone-symbols than said second predetermined subset of tone-symbols. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
-
-
39. A non-transitory computer-readable medium embodying computer-executable instructions which when executed by a processor, control a communications apparatus to operate in accordance with said computer-executable instructions, said computer executable instructions comprising:
-
instructions for controlling said apparatus to determine a first rate option to be used in a first transmission segment; instructions for controlling said apparatus to encode information bits to coded bits and mapping coded bits to modulation symbols in accordance with the first rate option; instructions for controlling said apparatus to identify a first predetermined subset and a second predetermined subset of tone-symbols in the first transmission segment as a function of the first rate option, wherein a tone-symbol is a tone in an OFDM symbol period and tones are indexed in a logical order; instructions for controlling said apparatus to map the modulation symbols to the tone-symbols of the first transmission segment; instructions for controlling said apparatus to power-scale a modulation symbol mapped to a tone-symbol of the first predetermined subset with a first parameter; instructions for controlling said apparatus to power-scale a modulation symbol mapped to a tone-symbol of the second predetermined subset with a second parameter, the second parameter being different from the first parameter; instructions for controlling said apparatus to transmit the first transmission segment; wherein said first transmission segment includes multiple tone-symbols in each of a plurality of consecutive symbol transmission time periods; and wherein said first predetermined subset of tone-symbols includes more tone-symbols than said second predetermined subset of tone-symbols. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
-
-
50. A communications device comprising:
-
a processor that executes computer-executable instructions for indicating an uplink data rate for transmission segments in an OFDM wireless communication environment, said processor being configured to control said communications device to; determine a first rate option to be used in a first transmission segment; encode information bits to coded bits and mapping coded bits to modulation symbols in accordance with the first rate option; identify a first predetermined subset and a second predetermined subset of tone-symbols in the first transmission segment as a function of the first rate option, wherein a tone-symbol is a tone in an OFDM symbol period and tones are indexed in a logical order; map the modulation symbols to the tone-symbols of the first transmission segment; power-scale a modulation symbol mapped to a tone-symbol of the first predetermined subset with a first parameter; power-scale a modulation symbol mapped to a tone-symbol of the second predetermined subset with a second parameter, the second parameter being different from the first parameter; and transmit the first transmission segment; wherein said first transmission segment includes multiple tone-symbols in each of a plurality of consecutive symbol transmission time periods; wherein said first predetermined subset of tone-symbols includes more tone-symbols than said second predetermined subset of tone-symbols; and a memory coupled to said processor. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
-
Specification