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 the wireless terminal, the set of tones comprising a first subset of equally-spaced non-contiguous tones and a second subset of contiguous tones, the first subset of equally-spaced non-contiguous tones and the second subset of contiguous tones having the same number of tones;
determining an arrival time of the signal;
comparing the arrival time of the signal to a target arrival time window;
generating a timing correction command as a function of the comparison of the arrival time to the target arrival time window, the timing correction command used to instruct the wireless terminal to adjust timing control; and
transmitting the timing correction command.
1 Assignment
0 Petitions
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
42 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 the wireless terminal, the set of tones comprising a first subset of equally-spaced non-contiguous tones and a second subset of contiguous tones, the first subset of equally-spaced non-contiguous tones and the second subset of contiguous tones having the same number of tones; determining an arrival time of the signal; comparing the arrival time of the signal to a target arrival time window; generating a timing correction command as a function of the comparison of the arrival time to the target arrival time window, the timing correction command used to instruct the wireless terminal to adjust timing control; and transmitting the timing correction command. - View Dependent Claims (2, 3, 4, 5, 40)
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6. 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, the set of tones comprising a first subset of equally-spaced non-contiguous tones and a second subset of contiguous tones, the first subset of equally-spaced non-contiguous tones and the second subset of contiguous tones having the same number of tones; a processor that determines an arrival time of the signal and compares the arrival time of the signal to a target arrival time, and generates a timing correction command as a function of the comparison of the arrival time to the target arrival time, the timing correction command used to instruct the wireless terminal to adjust timing control; and a transmitter that sends a timing correction command to the wireless terminal. - View Dependent Claims (7, 8, 9, 10)
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11. An apparatus that facilitates synchronizing a wireless terminal and a base station, comprising:
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means for receiving a signal from the wireless terminal, the signal comprising a set of tones, the set of tones comprising a first subset of equally-spaced non-contiguous tones and a second subset of contiguous tones, the first subset of equally-spaced non-contiguous tones and the second subset of contiguous tones having the same number of tones; 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 as a function of the comparison of the arrival time to the target arrival time, the tinting correction command signal used to instruct the wireless terminal to adjust timing control; and means for transmitting the timing correction command signal to the wireless terminal. - View Dependent Claims (12, 13, 14, 15)
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16. A non-transitory computer-readable medium having stored thereon computer-readable instructions, the instructions comprising:
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receiving, utilizing a receiver, a signal comprising a set of tones from a wireless terminal, the set of tones comprising a first subset of equally-spaced non-contiguous tones and a second subset of contiguous tones, the first subset of equally-spaced non-contiguous tones and the second subset of contiguous tones having the same number of tones; analyzing, utilizing a processor, the signal to determine an arrival time of the signal; comparing, utilizing the processor, the arrival time of the signal to a target arrival time window; generating, utilizing the processor, a timing correction command as a function of the comparison of the arrival time to the target arrival time window, the timing correction command used to instruct the wireless terminal to adjust timing control; and transmitting, utilizing a transmitter, the timing correction command to the wireless terminal. - View Dependent Claims (17, 18, 19, 20)
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21. 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 the wireless terminal, the set of tones comprising a first subset of equally-spaced non-contiguous tones and a second subset of contiguous tones, the first subset of equally-spaced non-contiguous tones and the second subset of contiguous tones having the same number of tones; receiving a timing control command that is generated as 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, the timing control command used to instruct the wireless terminal to adjust timing control; and adjusting the timing control for the wireless terminal based on the timing control command. - View Dependent Claims (22, 23, 24, 25)
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26. 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 equally-spaced 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, the first subset of equally-spaced non-contiguous tones and the second subset of contiguous tones having the same number of tones; 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 a comparison of the arrival time of the signal as determined from the set of tones and an expected arrival time of the signal, the timing control command used to instruct the wireless terminal to adjust timing control. - View Dependent Claims (27, 28, 29)
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30. 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, the set of tones comprising a first subset of equally-spaced non-contiguous tones and a second subset of contiguous tones, the first subset of equally-spaced non-contiguous tones and the second subset of contiguous tones having the same number of tones; means for receiving a timing control command that is generated as 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, the timing control command used to instruct the wireless terminal to adjust timing control; and means for adjusting the timing control for the wireless terminal based on the timing control command. - View Dependent Claims (31, 32, 33, 34, 41, 42)
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35. A non-transitory computer-readable medium having stored thereon computer-executable instructions for:
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transmitting, utilizing a transmitter, a signal comprising a set of tones from a wireless terminal, the set of tones comprising a first subset of equally-spaced non-contiguous tones and a second subset of contiguous tones, the first subset of equally-spaced non-contiguous tones and the second subset of contiguous tones having the same number of tones; receiving, utilizing a receiver, a timing control command that is generated as 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;
the timing control command used to instruct the wireless terminal to adjust timing control; andadjusting, utilizing a processor, the timing control for the wireless terminal based on the timing control command. - View Dependent Claims (36, 37, 38, 39)
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Specification