NARROW BAND PRACH WITH MULTIPLE TONE HOPPING DISTANCES
First Claim
1. A method of wireless communication, comprising:
- transmitting a first tone of a Physical Random Access Channel (PRACH);
transmitting a second tone of the PRACH at a first hopping distance from the first tone;
transmitting a third tone of the PRACH; and
transmitting a fourth tone of the PRACH at a second hopping distance from the third tone.
1 Assignment
0 Petitions
Accused Products
Abstract
Due to the limited dimension of a NB that may be used by multiple users, as well as possible large coverage areas, timing offset estimation may be outside of NCP. The inaccuracy in the timing estimate can be improved by using more than one tone hopping distance for PRACH. An apparatus may then transmit a first and second tone of the PRACH at a first hopping distance from the first tone. The apparatus may then transmit a third tone of the PRACH and a fourth tone of the PRACH at a second hopping distance from the third tone. The second hopping distance may be greater than first hopping distance. The apparatus may also transmit an additional tone of the PRACH using a random hopping distance. A receiving apparatus may receive the transmitted PRACH and determine a phase estimation based on the sets of tones having different hopping distances.
20 Citations
57 Claims
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1. A method of wireless communication, comprising:
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transmitting a first tone of a Physical Random Access Channel (PRACH); transmitting a second tone of the PRACH at a first hopping distance from the first tone; transmitting a third tone of the PRACH; and transmitting a fourth tone of the PRACH at a second hopping distance from the third tone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An apparatus for wireless communication, comprising:
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means for transmitting a first tone of a Physical Random Access Channel (PRACH), wherein the means for transmitting transmits a second tone of the PRACH at a first hopping distance from the first tone, transmits a third tone of the PRACH, and transmits a fourth tone of the PRACH at a second hopping distance from the third tone. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. An apparatus for wireless communication, comprising:
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a memory; and at least one processor coupled to the memory and configured to; transmit a first tone of a Physical Random Access Channel (PRACH); transmit a second tone of the PRACH at a first hopping distance from the first tone; transmit a third tone of the PRACH; and transmit a fourth tone of the PRACH at a second hopping distance from the third tone. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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33. A computer-readable medium storing computer executable code for wireless communication, comprising code to:
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transmit a first tone of a Physical Random Access Channel (PRACH); transmit a second tone of the PRACH at a first hopping distance from the first tone; transmit a third tone of the PRACH; and transmit a fourth tone of the PRACH at a second hopping distance from the third tone. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41)
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42. A method of wireless communication, comprising:
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receiving a first set of tones of a PRACH at a first tone hopping distance; receiving a second set of tones of a PRACH at a second tone hopping distance; and determining a first phase estimation based on the first set of tones and a second phase estimation based on the second set of tones. - View Dependent Claims (43, 44, 45)
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46. An apparatus for wireless communication, comprising:
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means for receiving a first set of tones of a PRACH at a first tone hopping distance and receiving a second set of tones of a PRACH at a second tone hopping distance; and means for determining a first phase estimation based on the first set of tones and a second phase estimation based on the second set of tones. - View Dependent Claims (47, 48, 49)
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50. An apparatus for wireless communication, comprising:
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a memory; and at least one processor coupled to the memory and configured to; receive a first set of tones of a PRACH at a first tone hopping distance; receive a second set of tones of a PRACH at a second tone hopping distance; and determine a first phase estimation based on the first set of tones and a second phase estimation based on the second set of tones. - View Dependent Claims (51, 52, 53)
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54. A computer-readable medium storing computer executable code, comprising code to:
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receive a first set of tones of a PRACH at a first tone hopping distance; receive a second set of tones of a PRACH at a second tone hopping distance; and determine a first phase estimation based on the first set of tones and a second phase estimation based on the second set of tones. - View Dependent Claims (55, 56, 57)
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Specification