Discovery signals and network synchronization signals design in LTE
First Claim
1. A method of wireless communication for a first base station (BS) comprising:
- determining a first reference signal for at least one of discovery or measurement, and a second reference signal for synchronization, wherein both the first reference signal and the second reference signal are based on a same type of reference signal;
transmitting a first set of subframes including the first reference signal in one or more symbols; and
transmitting a second set of subframes including the second reference signal in one or more symbols, wherein the first set of subframes and the second set of subframes differ at least by one subframe and the first base station refrains from transmitting during at least one of a first symbol or a second symbol in at least a subset of subframes in the second set of subframes, the first symbol preceding the one or more symbols in which the second reference signal is transmitted and the second symbol being subsequent to the one or more symbols in which the second reference signal is transmitted,wherein the same type of reference signal is based on a Cell-Specific Reference Signal (CRS) or a Positioning Reference Signal (PRS) and has a bandwidth configured by the first base station.
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Accused Products
Abstract
Base stations (such as small cells) may support active and dormant states. To facilitate state transitions, these cells may transmit discovery signals. The transmission design of both discovery signals and network synchronization signals from small cells should provide for regular periodicity, while supporting the benefit of transitioning between active and dormant states. Disclosed is a method, a computer program product, and an apparatus that determine a first reference signal for at least one of discovery or measurement, and a second reference signal for synchronization, where both the first reference signal and the second reference signal are based on a same type of reference signal.
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Citations
45 Claims
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1. A method of wireless communication for a first base station (BS) comprising:
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determining a first reference signal for at least one of discovery or measurement, and a second reference signal for synchronization, wherein both the first reference signal and the second reference signal are based on a same type of reference signal; transmitting a first set of subframes including the first reference signal in one or more symbols; and transmitting a second set of subframes including the second reference signal in one or more symbols, wherein the first set of subframes and the second set of subframes differ at least by one subframe and the first base station refrains from transmitting during at least one of a first symbol or a second symbol in at least a subset of subframes in the second set of subframes, the first symbol preceding the one or more symbols in which the second reference signal is transmitted and the second symbol being subsequent to the one or more symbols in which the second reference signal is transmitted, wherein the same type of reference signal is based on a Cell-Specific Reference Signal (CRS) or a Positioning Reference Signal (PRS) and has a bandwidth configured by the first base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A first base station (BS) for wireless communication, comprising:
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a memory; and at least one processor coupled to the memory and configured to; determine a first reference signal for at least one of discovery or measurement, and a second reference signal for synchronization, wherein both the first reference signal and the second reference signal are based on a same type of reference signal; transmit a first set of subframes including the first reference signal in one or more symbols; and transmit a second set of subframes including the second reference signal in one or more symbols, wherein the first set of subframes and the second set of subframes differ at least by one subframe and the first base station refrains from transmitting during at least one of a first symbol or a second symbol in at least a subset of subframes in the second set of subframes, the first symbol preceding the one or more symbols in which the second reference signal is transmitted and the second symbol being subsequent to the one or more symbols in which the second reference signal is transmitted, wherein at least one of the first reference signal or the second reference signal is based on a Cell-Specific Reference Signal (CRS) or a Positioning Reference Signal (PRS) and has a bandwidth configured by the first base station. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An apparatus for wireless communication for a first base station (BS) comprising:
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means for determining a first reference signal for at least one of discovery or measurement, and a second reference signal for synchronization, wherein both the first reference signal and the second reference signal are based on a same type of reference signal; and means for transmitting a first set of subframes including the first reference signal in one or more symbols and transmitting a second set of subframes including the second reference signal in one or more symbols, where the first set of subframes and the second set of subframes differ at least by one subframe, wherein the first base station refrains from transmitting during at least one of a first symbol or a second symbol in at least a subset of subframes in the second set of subframes, the first symbol preceding the one or more symbols in which the second reference signal is transmitted and the second symbol being subsequent to the one or more symbols in which the second reference signal is transmitted, wherein the same type of reference signal is based on a Cell-Specific Reference Signal (CRS) or a Positioning Reference Signal (PRS) and has a bandwidth configured by the first base station. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A non-transitory computer-readable medium storing computer executable code for wireless communication for a first base station (BS), comprising code to:
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determine a first reference signal for at least one of discovery or measurement, and a second reference signal for synchronization, wherein both the first reference signal and the second reference signal are based on a same type of reference signal; transmit a first set of subframes including the first reference signal in one or more symbols; and transmit a second set of subframes including the second reference signal in one or more symbols, where the first set of subframes and the second set of subframes differ at least by one subframe, wherein the first base station refrains from transmitting during at least one of a first symbol or a second symbol in at least a subset of subframes in the second set of subframes, the first symbol preceding the one or more symbols in which the second reference signal is transmitted and the second symbol being subsequent to the one or more symbols in which the second reference signal is transmitted, wherein the same type of reference signal is based on a Cell-Specific Reference Signal (CRS) or a Positioning Reference Signal (PRS) and has a bandwidth configured by the first base station. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification