Reverse link pilot transmission for a wireless communication system
First Claim
1. An apparatus comprising:
- at least one processor configured to;
generate a scrambling sequence based on pilot information for a terminal;
generate pilot symbols based on the scrambling sequence;
identify one or more code division multiple access (CDMA) subsegments assigned to the terminal by at least one sector, wherein the one or more CDMA subsegments comprise a set of subcarriers shared by terminals served by the at least one sector for sending control information on a reverse link in the wireless communication system, and wherein the set of subcarriers comprises a subset of a system bandwidth;
map the pilot symbols to a time frequency block of the one or more CDMA subsegments, the time frequency block covering a subset of time frequency resources of the one or more CDMA subsegments; and
send the mapped pilot symbols in the one or more CDMA subsegments on the reverse link to the at least one sector in a wireless communication system; and
a memory coupled to the at least one processor.
1 Assignment
0 Petitions
Accused Products
Abstract
Techniques to transmit pilot on a CDMA segment on the reverse link in a wireless communication system are described. A terminal generates a scrambling sequence based on its pilot information. The pilot information may be used for the entire duration of a call by the terminal and for all sectors with which the terminal communicates during the call. The terminal generates pilot symbols based on the scrambling sequence, maps the pilot symbols to the CDMA segment, generates OFDM symbols with the mapped pilot symbols, and sends the OFDM symbols to one or more sectors. A base station processes received OFDM symbols to obtain received symbols for the CDMA segment. The base station generates the scrambling sequence based on the pilot information for the terminal and processes the received symbols with the scrambling sequence to obtain at least one parameter (e.g., received signal strength) for the terminal.
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Citations
46 Claims
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1. An apparatus comprising:
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at least one processor configured to; generate a scrambling sequence based on pilot information for a terminal; generate pilot symbols based on the scrambling sequence; identify one or more code division multiple access (CDMA) subsegments assigned to the terminal by at least one sector, wherein the one or more CDMA subsegments comprise a set of subcarriers shared by terminals served by the at least one sector for sending control information on a reverse link in the wireless communication system, and wherein the set of subcarriers comprises a subset of a system bandwidth; map the pilot symbols to a time frequency block of the one or more CDMA subsegments, the time frequency block covering a subset of time frequency resources of the one or more CDMA subsegments; and send the mapped pilot symbols in the one or more CDMA subsegments on the reverse link to the at least one sector in a wireless communication system; and a memory coupled to the at least one processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 37, 39, 40)
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11. A method for communication in a wireless system comprising:
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generating a scrambling sequence based on pilot information for a terminal; generating pilot symbols based on the scrambling sequence; identifying one or more code division multiple access (CDMA) subsegments assigned to the terminal by at least one sector, wherein the one or more CDMA subsegments comprise a set of subcarriers shared by terminals served by the at least one sector for sending control information on a reverse link in the wireless communication system, and wherein the set of subcarriers comprises a subset of a system bandwidth; mapping the pilot symbols to a time frequency block of the one or more CDMA subsegments, the time frequency block covering a subset of time frequency resources of the one or more CDMA subsegments; and sending the mapped pilot symbols in the one or more CDMA subsegments on the reverse link to the at least one sector. - View Dependent Claims (12, 13, 38, 41, 42)
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14. An apparatus comprising:
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means for generating, by a processor, a scrambling sequence based on pilot information for a terminal; means for generating pilot symbols based on the scrambling sequence; means for identifying one or more code division multiple access (CDMA) subsegments assigned to the terminal by at least one sector, wherein the one or more CDMA subsegments comprise a set of subcarriers shared by terminals served by the at least one sector for sending control information on a reverse link in the wireless communication system, and wherein the set of subcarriers comprises a subset of a system bandwidth; means for mapping the pilot symbols to a time frequency block of the one or more CDMA subsegments, the time frequency block covering a subset of time frequency resources of the one or more CDMA subsegments; and means for sending the mapped pilot symbols in the one or more CDMA subsegments on the reverse link to the at least one sector in a wireless communication system. - View Dependent Claims (15, 43, 44, 45)
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16. A non-transitory processor-readable medium including instructions stored thereon, comprising:
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a first instruction set for generating a scrambling sequence based on pilot information for a terminal; a second instruction set for generating pilot symbols based on the scrambling sequence; a second instruction set for identifying one or more code division multiple access (CDMA) subsegments assigned to the terminal by at least one sector, wherein the one or more CDMA subsegments comprise a set of subcarriers shared by terminals served by the at least one sector for sending control information on a reverse link in the wireless communication system, and wherein the set of subcarriers comprises a subset of a system bandwidth; a fourth instruction set for mapping the pilot symbols to a time frequency block of the one or more CDMA subsegments, the time frequency block covering a subset of time frequency resources of the one or more CDMA subsegments; and a fifth instruction set for sending the mapped pilot symbols in the one or more CDMA subsegments on the reverse link to the at least one sector in a wireless communication system. - View Dependent Claims (46)
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17. An apparatus comprising:
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at least one processor configured to; generate a scrambling sequence based on pilot information for a terminal; assign, by at least one sector, one or more code division multiple access (CDMA) subsegments to the terminal, wherein the one or more CDMA subsegments comprise a set of subcarriers shared by terminals served by the at least one sector for sending control information on a reverse link in the wireless communication system, and wherein the set of subcarriers comprises a subset of a system bandwidth; obtain received symbols from a time frequency block of the one or more CDMA subsegments, the time frequency block covering a subset of time frequency resources of the one or more CDMA subsegments; and process the received symbols based on the scrambling sequence for the terminal to obtain at least one parameter for the terminal; and a memory coupled to the at least one processor. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method comprising:
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generating a scrambling sequence based on of pilot information for a terminal; assigning, by at least one sector, one or more code division multiple access (CDMA) subsegments to the terminal, wherein the one or more CDMA subsegments comprise a set of subcarriers shared by terminals served by the at least one sector for sending control information on a reverse link in the wireless communication system, and wherein the set of subcarriers comprises a subset of a system bandwidth; obtaining received symbols from a time frequency block of the one or more CDMA subsegments, the time frequency block covering a subset of time frequency resources of the one or more CDMA subsegments; and processing the received symbols based on the scrambling sequence for the terminal to obtain at least one parameter for the terminal. - View Dependent Claims (29, 30, 31)
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32. An apparatus comprising:
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means for generating, by a processor, a scrambling sequence based on pilot information for a terminal; means for assigning one or more code division multiple access (CDMA) subsegments to the terminal, wherein the one or more CDMA subsegments comprise a set of subcarriers shared by terminals served by at least one sector for sending control information on a reverse link in the wireless communication system, and wherein the set of subcarriers comprises a subset of a system bandwidth; means for obtaining received symbols from a time frequency block of the one or more CDMA subsegments, the time frequency block covering a subset of time frequency resources of the one or more CDMA subsegments; and means for processing the received symbols based on the scrambling sequence to obtain at least one parameter for the terminal. - View Dependent Claims (33, 34)
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35. A non-transitory processor-readable medium including instructions stored thereon, comprising:
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a first instruction set for generating a scrambling sequence based on pilot information for a terminal; a second instruction set for assigning, by at least one sector, one or more code division multiple access (CDMA) subsegments to the terminal, wherein the one or more CDMA subsegments comprise a set of subcarriers shared by terminals served by the at least one sector for sending control information on a reverse link in the wireless communication system, and wherein the set of subcarriers comprises a subset of a system bandwidth; a third instruction set for obtaining received symbols from a time frequency block of the one or more CDMA subsegments, the time frequency block covering a subset of time frequency resources of the one or more CDMA subsegments; and a fourth instruction set for processing the received symbols based on the scrambling sequence to obtain at least one parameter for the terminal. - View Dependent Claims (36)
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Specification