Abstract
A variable rate transmission system transmits a variable rate data packet including an accompanying rate indication signal indicative of the transmission rate of the variable data packet. The data packet can be spread using a long pseudonoise (PN) code the mask of which can be selected in accordance with the transmission rate of the variable rate data packet. A preamble providing the transmission rate can be punctured into an outgoing pilot signal. The rate indication signal can be encoded in accordance with a set of orthogonal functions that are part of the indication of the transmission rate of the data packet.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
Not Available | 12/06/2006 | ISLD-200612-006 | QUALCOMM INC | No | Family Member | ||||
Not Available | 12/06/2006 | ISLD-200612-006 | QUALCOMM INC | Yes | Basis Patent | ||||
3G | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC |
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Yes | Family Member | |||
Not Available | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC |
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Yes | Family Member | |||
3G | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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Yes | Family Member | |||
Not Available | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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Yes | Family Member | |||
3G | 29/01/2017 | ISLD-201703-174 | QUALCOMM INC |
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No | Family Member |
Specification Information
Specification Information
Technologies
Family Information
All Granted Patents In Patent Family : | ---- |
All Pending Patents In Patent Family : | ---- |
Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
US6798736B1 | Not Available | 12/06/2006 | ISLD-200612-006 | QUALCOMM INC |
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Yes | Basis Patent | |||
US6798736B1 | Not Available | 12/06/2006 | ISLD-200612-006 | QUALCOMM INC |
S1
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No | Family Member | |||
US6798736B1 | 3G | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC |
S1
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Yes | Basis Patent | |||
US6798736B1 | Not Available | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC |
S1
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Yes | Basis Patent | |||
US6798736B1 | 3G | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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Yes | Basis Patent | |||
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Yes | Basis Patent | |||
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S1
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Yes | Basis Patent | |||
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S1
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Yes | Basis Patent | |||
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No | Family Member | |||
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No | Family Member | |||
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Yes | Basis Patent | |||
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No | Family Member | |||
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Yes | Family Member | |||
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Yes | Family Member | |||
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Yes | Family Member | |||
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Yes | Family Member | |||
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No | Family Member | |||
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Yes | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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Yes | Family Member | |||
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Yes | Family Member | |||
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Yes | Family Member | |||
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Yes | Family Member | |||
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Yes | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
EP2278745A2 | Not Available | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC |
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No | Family Member | |||
EP2278745A2 | 3G | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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No | Family Member | |||
EP2278745A2 | Not Available | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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No | Family Member | |||
EP2278745A2 | 3G | 29/01/2017 | ISLD-201703-174 | QUALCOMM INC |
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No | Family Member | |||
EP2278745A3 | Not Available | 12/06/2006 | ISLD-200612-006 | QUALCOMM INC |
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No | Family Member | |||
EP2278745A3 | 3G | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC |
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EP2278745A3 | Not Available | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC |
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EP2278745A3 | 3G | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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EP2278745A3 | Not Available | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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No | Family Member | |||
EP2278745A3 | 3G | 29/01/2017 | ISLD-201703-174 | QUALCOMM INC |
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No | Family Member | |||
JP2011055517A | Not Available | 12/06/2006 | ISLD-200612-006 | QUALCOMM INC |
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No | Family Member | |||
JP2011055517A | 3G | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC |
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No | Family Member | |||
JP2011055517A | Not Available | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC |
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No | Family Member | |||
JP2011055517A | 3G | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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JP2011055517A | Not Available | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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JP2011055517A | 3G | 29/01/2017 | ISLD-201703-174 | QUALCOMM INC |
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No | Family Member | |||
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No | Family Member | |||
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No | Family Member | |||
JP5474724B2 | 3G | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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No | Family Member | |||
JP5474724B2 | Not Available | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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No | Family Member | |||
JP5474724B2 | 3G | 29/01/2017 | ISLD-201703-174 | QUALCOMM INC |
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No | Family Member | |||
JP2011055518A | Not Available | 12/06/2006 | ISLD-200612-006 | QUALCOMM INC |
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No | Family Member | |||
JP2011055518A | 3G | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC |
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No | Family Member | |||
JP2011055518A | Not Available | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC |
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No | Family Member | |||
JP2011055518A | 3G | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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No | Family Member | |||
JP2011055518A | Not Available | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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No | Family Member | |||
JP2011055518A | 3G | 29/01/2017 | ISLD-201703-174 | QUALCOMM INC |
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No | Family Member | |||
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No | Family Member | |||
JP5587125B2 | 3G | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC |
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No | Family Member | |||
JP5587125B2 | Not Available | 27/01/2010 | ISLD-201004-004 | QUALCOMM INC |
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No | Family Member | |||
JP5587125B2 | 3G | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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No | Family Member | |||
JP5587125B2 | Not Available | 25/05/2010 | ISLD-201007-015 | QUALCOMM INC |
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Technologies

Product
Use Cases

Services
Claim
1. An apparatus comprising:
a first demodulator configured to use a data subchannel demodulation format to demodulate a received signal to provide a packet of data;
a second demodulator configured to use a control subchannel demodulation format to demodulate said received signal to provide a demodulated control subchannel signal; and
a first decoder configured to extract a rate indication signal from said demodulated control subchannel signal, the rate indication signal indicating a data rate of said packet of data,
wherein the data subchannel demodulation format comprises a first Walsh sequence covering, and the control subchannel demodulation format comprises a second Walsh sequence covering that is orthogonal to the first Walsh covering,
wherein the rate indication signal is selected from a set of rate indication signals corresponding to a set of data rates, and
wherein the length of the rate indication signal varies in inverse proportion with the data rates such that a proportion of data in the data packet overwritten by the selected rate indication signal remains constant.', 'a first demodulator configured to use a data subchannel demodulation format to demodulate a received signal to provide a packet of data;', 'a second demodulator configured to use a control subchannel demodulation format to demodulate said received signal to provide a demodulated control subchannel signal; and', 'a first decoder configured to extract a rate indication signal from said demodulated control subchannel signal, the rate indication signal indicating a data rate of said packet of data,', 'wherein the data subchannel demodulation format comprises a first Walsh sequence covering, and the control subchannel demodulation format comprises a second Walsh sequence covering that is orthogonal to the first Walsh covering,', 'wherein the rate indication signal is selected from a set of rate indication signals corresponding to a set of data rates, and', 'wherein the length of the rate indication signal varies in inverse proportion with the data rates such that a proportion of data in the data packet overwritten by the selected rate indication signal remains constant.
2. The apparatus of claim 1, wherein the control subchannel signal comprises a pilot signal and the rate indication signal.
3. The apparatus of claim 1, wherein the control subchannel signal comprises a rate request signal.
4. The apparatus of claim 3, further comprising a rate request decoder configured to decode the rate request signal in the control subchannel signal.
5. The apparatus of claim 1, wherein the decoder is configured to use a plurality of decoding formats to decode said rate indication signal and determine a rate indicated in said rate indication signal in accordance with a decoding format that correctly decodes said rate indication signal.
6. The apparatus of claim 5, wherein said plurality of decoding formats comprise a plurality of orthogonal Walsh decoding formats.
7. The apparatus of claim 5, wherein said decoder comprises a bank of correlators, each correlator being configured to perform a correlation operation according to a specific data rate.
8. The apparatus of claim 5, wherein said decoder comprises a bank of matched filters, each matched filter being configured to perform a correlation operation according to a specific data rate.
9. The apparatus of claim 1, wherein the apparatus is a base station configured to receive signals from a remote unit
10. The apparatus of claim 1, further comprising a de-multiplexer configured to separate portions of the demodulated control subchannel signal into pilot symbols and rate indication symbols
11. The apparatus of claim 1, further comprising a second decoder configured to decode the received signal in accordance with the data rate of the rate indication signal extracted by the first decoder to provide a decoded packet of data
12. A method comprising:
receiving a signal comprising a packet of data;
demodulating said received signal with a data subchannel demodulation format;
demodulating said received signal with a control subchannel demodulation format to provide a demodulated control subchannel signal; and
extracting a rate indication signal from the demodulated control subchannel signal, the rate indication signal indicative of a data rate of said packet of data,
wherein the data subchannel demodulation format comprises a first Walsh sequence covering, and the control subchannel demodulation format comprises a second Walsh sequence covering that is orthogonal to the first Walsh covering,
wherein the rate indication signal is selected from a set of rate indication signals corresponding to a set of data rates, and
wherein the length of the rate indication signal varies in inverse proportion with the data rates such that a proportion of data in the data packet overwritten by the selected rate indication signal remains constant.', 'receiving a signal comprising a packet of data;', 'demodulating said received signal with a data subchannel demodulation format;', 'demodulating said received signal with a control subchannel demodulation format to provide a demodulated control subchannel signal; and', 'extracting a rate indication signal from the demodulated control subchannel signal, the rate indication signal indicative of a data rate of said packet of data,', 'wherein the data subchannel demodulation format comprises a first Walsh sequence covering, and the control subchannel demodulation format comprises a second Walsh sequence covering that is orthogonal to the first Walsh covering,', 'wherein the rate indication signal is selected from a set of rate indication signals corresponding to a set of data rates, and', 'wherein the length of the rate indication signal varies in inverse proportion with the data rates such that a proportion of data in the data packet overwritten by the selected rate indication signal remains constant
13. The method of claim 12, wherein said control subchannel signal comprises a pilot signal
14. The method of claim 12, wherein the control subchannel signal further comprises a rate request signal
15. The method of claim 14, further comprising decoding the rate request signal in the control subchannel signal
16. The method of claim 12, further comprising:
decoding said rate indication signal using a plurality of decoding formats; and
selecting a rate indicated in said rate indication signal corresponding to a decoding format that correctly decodes said rate indication signal among the plurality of decoding formats.', 'decoding said rate indication signal using a plurality of decoding formats; and', 'selecting a rate indicated in said rate indication signal corresponding to a decoding format that correctly decodes said rate indication signal among the plurality of decoding formats
17. The method of claim 16, wherein said plurality of decoding formats comprise a plurality of orthogonal Walsh decoding formats
18. The method of claim 16, wherein said decoding comprises correlating symbol energies of the received signal with a plurality of possible rate indication waveforms
19. The method of claim 16, wherein said decoding comprises performing a plurality of matched filtering operations, each matched filtering operation performs a correlation operation corresponding to a specific rate.
20. The method of claim 12, further comprising separating portions of the demodulated control subchannel signal into pilot symbols and rate indication symbols.
21. The method of claim 12, further comprising decoding the received signal in accordance with the data rate of the rate indication signal extracted by the first decoder to provide a decoded packet of data.
22. The method of claim 12, wherein receiving the signal comprises receiving the signal at a base station sent from a remote unit.
23. A method comprising:
encoding a packet of data;
covering the encoded data packet with a first sequence corresponding to a data channel;
forming a rate indication signal, the rate indication signal indicating a data rate for the encoded data packet;
covering the rate indication signal and a pilot signal with a second sequence corresponding to a control channel, the second sequence being orthogonal to the first sequence; and
transmitting the encoded data packet, pilot signal and rate indication signal,
wherein the rate indication signal is selected from a set of rate indication signals corresponding to a set of data rates, and
wherein the length of the rate indication signal varies in inverse proportion with the data rates such that a proportion of data in the data packet overwritten by the selected rate indication signal remains constant.', 'encoding a packet of data;', 'covering the encoded data packet with a first sequence corresponding to a data channel;', 'forming a rate indication signal, the rate indication signal indicating a data rate for the encoded data packet;', 'covering the rate indication signal and a pilot signal with a second sequence corresponding to a control channel, the second sequence being orthogonal to the first sequence; and', 'transmitting the encoded data packet, pilot signal and rate indication signal,', 'wherein the rate indication signal is selected from a set of rate indication signals corresponding to a set of data rates, and', 'wherein the length of the rate indication signal varies in inverse proportion with the data rates such that a proportion of data in the data packet overwritten by the selected rate indication signal remains constant.
24. The method of claim 23, further comprising selecting the data rate from the set of data rates.
25. The method of claim 23, further comprising time multiplexing the rate indication signal and the pilot signal.
26. The method of claim 23, further comprising puncturing the rate indication signal into the pilot signal.
27. The method of claim 23, further comprising:
encoding a rate request message;
time multiplexing the pilot signal, the rate indication signal, and the encoded rate request message; and
covering the time-multiplexed pilot signal, rate indication signal and encoded rate request message with the second sequence corresponding to the control channel.', 'encoding a rate request message;', 'time multiplexing the pilot signal, the rate indication signal, and the encoded rate request message; and', 'covering the time-multiplexed pilot signal, rate indication signal and encoded rate request message with the second sequence corresponding to the control channel.
28. The method of claim 23, wherein the first and second sequences are Walsh sequences.
29. The method of claim 28, wherein forming the rate indication signal comprises:
selecting a Walsh sequence from a plurality of Walsh sequences in accordance with the data rate selected from a plurality of data rates, and
wherein the rate indication signal further comprises a rate indication bit covered with the selected Walsh sequence.', 'selecting a Walsh sequence from a plurality of Walsh sequences in accordance with the data rate selected from a plurality of data rates, and', 'wherein the rate indication signal further comprises a rate indication bit covered with the selected Walsh sequence.
30. The method of claim 23, wherein transmitting the encoded data packet, pilot signal and rate indication signal comprises transmitting from a remote unit to a base station.
31. An apparatus comprising:
an encoder operable to encode a packet of data;
a data channel spreading element operable to cover the encoded data packet with a first sequence corresponding to a data channel;
a multiplexer operable to multiplex a pilot signal and a rate indication signal, the rate indication signal indicating a data rate for the encoded data packet;
a control channel spreading element operable to cover the rate indication signal and the pilot signal with a second sequence corresponding to a control channel, the second sequence being orthogonal to the first sequence; and
a transmitter operable to transmit the encoded data packet, pilot signal and rate indication signal,
wherein the rate indication signal is selected from a set of rate indication signals corresponding to a set of data rates, and
wherein the length of the rate indication signal varies in inverse proportion with the data rates such that a proportion of data in the data packet overwritten by the selected rate indication signal remains constant.', 'an encoder operable to encode a packet of data;', 'a data channel spreading element operable to cover the encoded data packet with a first sequence corresponding to a data channel;', 'a multiplexer operable to multiplex a pilot signal and a rate indication signal, the rate indication signal indicating a data rate for the encoded data packet;', 'a control channel spreading element operable to cover the rate indication signal and the pilot signal with a second sequence corresponding to a control channel, the second sequence being orthogonal to the first sequence; and', 'a transmitter operable to transmit the encoded data packet, pilot signal and rate indication signal,', 'wherein the rate indication signal is selected from a set of rate indication signals corresponding to a set of data rates, and', 'wherein the length of the rate indication signal varies in inverse proportion with the data rates such that a proportion of data in the data packet overwritten by the selected rate indication signal remains constant.
32. The apparatus of claim 31, further comprising a Walsh covering element operable to select a Walsh sequence to cover the rate indication signal including a rate indication bit, the Walsh sequence being selected from a plurality of Walsh sequences in accordance with the data rate selected from the set of data rates.
33. The apparatus of claim 31, further comprising:
a second encoder operable to encode a rate request message, wherein the multiplexer is operable to multiplex the pilot signal, rate indication signal, and the encoded rate request message, wherein the control channel spreading element is operable to cover the multiplexed pilot signal, rate indication signal and encoded rate request message with the second sequence corresponding to the control channel.', 'a second encoder operable to encode a rate request message, wherein the multiplexer is operable to multiplex the pilot signal, rate indication signal, and the encoded rate request message, wherein the control channel spreading element is operable to cover the multiplexed pilot signal, rate indication signal and encoded rate request message with the second sequence corresponding to the control channel.
34. The apparatus of claim 31, wherein the apparatus is a remote unit operable to communicate wirelessly with a base station.
35. A method comprising:
encoding a packet of data;
covering the encoded data packet with a first sequence corresponding to a data channel;
covering a rate indication signal with the first sequence, the rate indication signal indicating a data rate of the encoded data packet;
combining the encoded data packet with the rate indication signal;
transmitting the combined data packet and the rate indication signal; and
selecting the rate indication signal from a set of rate indication signals corresponding to a set of data rates,
wherein the length of the rate indication signals varies in inverse proportion with the data rates such that a proportion of data in the data packet overwritten by a selected rate indication signal remains constant due to a variable duration of packets to be transmitted as a function of a selected data rate.', 'encoding a packet of data;', 'covering the encoded data packet with a first sequence corresponding to a data channel;', 'covering a rate indication signal with the first sequence, the rate indication signal indicating a data rate of the encoded data packet;', 'combining the encoded data packet with the rate indication signal;', 'transmitting the combined data packet and the rate indication signal; and', 'selecting the rate indication signal from a set of rate indication signals corresponding to a set of data rates,', 'wherein the length of the rate indication signals varies in inverse proportion with the data rates such that a proportion of data in the data packet overwritten by a selected rate indication signal remains constant due to a variable duration of packets to be transmitted as a function of a selected data rate.
36. The method of claim 35, further comprising:
interleaving symbols of the data packet; and
generating redundant symbols of the data packet to output a fixed number of symbols regardless of the data rate.', 'interleaving symbols of the data packet; and', 'generating redundant symbols of the data packet to output a fixed number of symbols regardless of the data rate.
37. The method of claim 35, wherein combining the encoded data packet with the rate indication signal comprises puncturing the rate indication signal as a preamble into the encoded data packet.
38. The method of claim 37, wherein the rate indication signal overwrites a portion of a frame containing the encoded data packet.
39. The method of claim 35, wherein the rate indication signals are orthogonal to each other over certain time periods.
40. The method of claim 35, wherein the first sequence is a Walsh sequence.
41. The method of claim 35, wherein the encoded data packet and the rate indication signal are combined before they are covered.
42. The method of claim 35, further comprising covering a pilot signal with a second sequence, the second sequence being orthogonal to the first sequence.
43. The method of claim 35, wherein transmitting the combined data packet and rate indication signal comprises transmitting from a remote unit to a base station.
44. An apparatus comprising:
an encoder configured to encode a data packet;
a multiplexer configured to multiplex the encoded data packet and a preamble indicative of a data rate of said data packet;
a transmitter configured to transmit the multiplexed encoded data packet and the preamble;
a first channel spreader configured to cover the encoded data packet with a first sequence corresponding to a data channel; and
a second channel spreader configured to cover the preamble with the first sequence,
wherein the preamble is selected from a set of preambles corresponding to a set of data rates, and
wherein the length of the preambles varies in inverse proportion with the data rates such that a proportion of data in the data packet overwritten by a selected preamble remains constant due to a variable duration of packets to be transmitted as a function of a selected data rate.', 'an encoder configured to encode a data packet;', 'a multiplexer configured to multiplex the encoded data packet and a preamble indicative of a data rate of said data packet;', 'a transmitter configured to transmit the multiplexed encoded data packet and the preamble;', 'a first channel spreader configured to cover the encoded data packet with a first sequence corresponding to a data channel; and', 'a second channel spreader configured to cover the preamble with the first sequence,', 'wherein the preamble is selected from a set of preambles corresponding to a set of data rates, and', 'wherein the length of the preambles varies in inverse proportion with the data rates such that a proportion of data in the data packet overwritten by a selected preamble remains constant due to a variable duration of packets to be transmitted as a function of a selected data rate.
45. The apparatus of claim 44, wherein the first sequence is a Walsh sequence.
46. The apparatus of claim 44, farther comprising a third channel spreader configured to cover a pilot signal with a second sequence, the second sequence being orthogonal to the first sequence.
47. The apparatus of claim 44, further comprising:
an interleaver configured to interleave symbols of the data packet; and
a repetition generator configured to generate redundant symbols of the data packet to output a fixed number of symbols regardless of the data rate.', 'an interleaver configured to interleave symbols of the data packet; and', 'a repetition generator configured to generate redundant symbols of the data packet to output a fixed number of symbols regardless of the data rate.
48. The apparatus of claim 44, wherein multiplexing the encoded data packet and the preamble comprises puncturing the preamble into the encoded data packet.
49. The apparatus of claim 48, wherein the preamble overwrites a portion of a frame containing the encoded data packet.
50. The apparatus of claim 44, wherein the preamble is selected from a set of preambles corresponding to a set of data rates.
51. The apparatus of claim 50, wherein the apparatus is a remote unit, and the transmitter is configured to transmit the multiplexed encoded data packet and the preamble to a base station.
52. An apparatus comprising:
an encoder configured to encode a data packet;
a multiplexer configured to multiplex the encoded data packet and a preamble indicative of a data rate of said data packet;
a transmitter configured to transmit the multiplexed encoded data packet and the preamble;
wherein the preamble is selected from a set of preambles corresponding to a set of data rates,
wherein the length of the preambles varies in inverse proportion with the data rates such that a proportion of data in the data packet overwritten by a selected preamble remains constant due to a variable duration of packets to be transmitted as a function of a selected data rate.', 'an encoder configured to encode a data packet;', 'a multiplexer configured to multiplex the encoded data packet and a preamble indicative of a data rate of said data packet;', 'a transmitter configured to transmit the multiplexed encoded data packet and the preamble;', 'wherein the preamble is selected from a set of preambles corresponding to a set of data rates,', 'wherein the length of the preambles varies in inverse proportion with the data rates such that a proportion of data in the data packet overwritten by a selected preamble remains constant due to a variable duration of packets to be transmitted as a function of a selected data rate.']
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SUMMARY
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.