Uplink timing control signal
First Claim
1. A method of synchronizing a wireless terminal with a base station in an OFDM wireless communication environment, comprising:
- receiving a signal comprising a set of tones from a wireless terminal wherein the tone spacing between any adjacent two tones is not equal;
determining an arrival time of the signal;
comparing the arrival time of the signal to a target arrival time window; and
transmitting a timing correction command that is generated as a function of the comparison of the arrival time to the target arrival time window, to the wireless terminal.
1 Assignment
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Accused Products
Abstract
The claimed subject matter relates to systems and methodologies for synchronizing timing between a base station and a wireless terminal. For example; a set of non-contiguous tones may be assigned to the terminal, and may be equally spaced apart from each other across a spectrum of all available tones. A set of contiguous tones may also be assigned to the terminal, which may transmit a timing control signal during a specified transmit time. A base station may receive the signal, which comprises information related to the non-contiguous and contiguous tone sets, and may determine a distance of the terminal to the base station based on measured and anticipated arrival time of the signal. The base station may transmit a timing correction command signal to the terminal based on such information.
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Citations
59 Claims
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1. A method of synchronizing a wireless terminal with a base station in an OFDM wireless communication environment, comprising:
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receiving a signal comprising a set of tones from a wireless terminal wherein the tone spacing between any adjacent two tones is not equal; determining an arrival time of the signal; comparing the arrival time of the signal to a target arrival time window; and transmitting a timing correction command that is generated as a function of the comparison of the arrival time to the target arrival time window, to the wireless terminal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus that facilitates performing timing synchronization between a wireless terminal and a base station, comprising:
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a receiver in a base station that receives a signal comprising a set of tones from a wireless terminal, wherein the tone spacing between any two adjacent tones is unequal; a processor that determines an arrival time of the signal and compares the arrival time of the signal to a target arrival time; and a transmitter that sends a timing correction command to the wireless terminal, wherein the processor generates the timing correction command as a function of the comparison of the arrival time to the target arrival time window. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An apparatus that facilitates synchronizing a wireless terminal and a base station, comprising:
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means for receiving a signal from a wireless terminal, the signal comprising a set of tones, wherein adjacent tones are unequally spaced; means for determining an arrival time of the signal at the base station; means for comparing the arrival time to a target arrival time; means for generating a timing correction command signal that synchronizes the base station and the wireless terminal; and means for transmitting the timing correction command signal to the wireless terminal. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A computer-readable medium having stored thereon computer-readable instructions, the instructions comprising:
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receiving a signal comprising a set of tones from a wireless terminal, wherein adjacent tones are not equally spaced; analyzing the signal to determine an arrival time of the signal; comparing the arrival time of the signal to a target arrival time window; and transmitting a timing correction command that is generated as a function of the comparison of the arrival time to the target arrival time window, to the wireless terminal. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A processor that executes instructions for synchronizing a wireless terminal and a base station in a wireless communication environment, the instructions comprising:
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receiving a signal comprising a set of tones from a wireless terminal, wherein tones that are adjacent to each other are unequally spaced apart; analyzing the signal to determine an arrival time of the signal; comparing the arrival time of the signal to a target arrival time; and transmitting a timing correction command that is generated as a function of the comparison of the arrival time to the target arrival time window, to the wireless terminal. - View Dependent Claims (26, 27, 28, 29, 30)
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31. A method of synchronizing a wireless terminal to a base station in a communication environment, comprising:
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transmitting a signal comprising a set of tones from a wireless terminal wherein the tone spacing between any adjacent two tones is not equal; receiving a timing control command that is a function of a comparison of the arrival time of the signal as determined from the set of tones and an expected arrival time of the signal; and adjusting timing control for the wireless terminal based on the timing control command. - View Dependent Claims (32, 33, 34, 35, 36)
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37. An apparatus that facilitates synchronizing a wireless terminal to a base station in a wireless communication environment, comprising:
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a receiver that receives a tone set assignment comprising a first subset of non-contiguous tones and a second subset of contiguous tones, and a transmission time assignment defining a time at which the wireless terminal is to transmit a signal; a processor that generates a signal comprising information related to the tone set; and a transmitter that transmits the signal at the assigned transmission time to a base station; wherein the receiver receives a timing control command that is generated as a function of the transmitted signal. - View Dependent Claims (38, 39, 40, 41)
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42. An apparatus that facilitates synchronizing a wireless terminal to a base station in a wireless communication environment, comprising:
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means for transmitting a signal comprising a set of tones from a wireless terminal wherein the tone spacing between any adjacent two tones is not equal; means for receiving a timing control command that is a function of a comparison of the arrival time of the signal as determined from the set of tones and an expected arrival time of the signal; and means for adjusting timing control for the wireless terminal based on the timing control command. - View Dependent Claims (43, 44, 45, 46, 47)
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48. A computer-readable medium having stored thereon computer-executable instructions for:
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transmitting a signal comprising a set of tones from a wireless terminal wherein the tone spacing between any adjacent two tones is not equal; receiving a timing control command that is a function of a comparison of the arrival time of the signal as determined from the set of tones and an expected arrival time of the signal; and adjusting timing control for the wireless terminal based on the timing control command. - View Dependent Claims (49, 50, 51, 52, 53)
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54. A processor that executes computer-executable instructions for synchronizing a base station and a wireless terminal, the instructions comprising:
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transmitting a signal comprising a set of tones from a wireless terminal wherein the tone spacing between any adjacent two tones is not equal; receiving a timing control command that is a function of a comparison of the arrival time of the signal as determined from the set of tones and an expected arrival time of the signal; and adjusting timing control for the wireless terminal based on the timing control command. - View Dependent Claims (55, 56, 57, 58, 59)
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Specification