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, by the first BS, one or more symbols of a first set of subframes in which at least one reference signal is to be received, wherein the at least one reference signal is for synchronization with at least a second BS, wherein discovery reference signals and the at least one reference signal for synchronization are separately managed;
refraining, by the first BS, from transmitting during the determined one or more symbols and during at least one of a first symbol or a second symbol in at least a subset of subframes in the first set of subframes, the first symbol preceding the one or more symbols in which the at least one reference signal for synchronization is received from the second BS and the second symbol being subsequent to the one or more symbols in which the at least one reference signal for synchronization is received from the second BS;
transmitting, by the first BS, a discovery reference signal during a second set of one or more symbols when the at least second BS transmits a second discovery reference signal; and
receiving the at least one reference signal for synchronization in the one or more symbols of the first set of subframes.
1 Assignment
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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
28 Claims
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1. A method of wireless communication for a first base station (BS) comprising:
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determining, by the first BS, one or more symbols of a first set of subframes in which at least one reference signal is to be received, wherein the at least one reference signal is for synchronization with at least a second BS, wherein discovery reference signals and the at least one reference signal for synchronization are separately managed; refraining, by the first BS, from transmitting during the determined one or more symbols and during at least one of a first symbol or a second symbol in at least a subset of subframes in the first set of subframes, the first symbol preceding the one or more symbols in which the at least one reference signal for synchronization is received from the second BS and the second symbol being subsequent to the one or more symbols in which the at least one reference signal for synchronization is received from the second BS; transmitting, by the first BS, a discovery reference signal during a second set of one or more symbols when the at least second BS transmits a second discovery reference signal; and receiving the at least one reference signal for synchronization in the one or more symbols of the first set of subframes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus for wireless communication at a first base station (BS), comprising:
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means for determining, by the first BS, one or more symbols of a first set of subframes in which at least one reference signal is to be received, wherein the at least one reference signal is for synchronization with at least a second BS, wherein discovery reference signals and the at least one reference signal for synchronization are separately managed; means for refraining, by the first BS, from transmitting during the determined one or more symbols and during at least one of a first symbol or a second symbol in at least a subset of subframes in the first set of subframes, the first symbol preceding the one or more symbols in which the at least one reference signal for synchronization is received from the second BS and the second symbol being subsequent to the one or more symbols in which the at least one reference signal for synchronization is received from the second BS; means for transmitting, by the first BS, a discovery reference signal during a second set of one or more symbols when the at least second BS transmits a second discovery reference signal; and means for receiving the at least one reference signal for synchronization in the one or more symbols of the first set of subframes. - View Dependent Claims (15, 16, 17, 18)
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19. An apparatus for wireless communication at a first base station (BS), comprising:
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a memory; and at least one processor coupled to the memory and configured to; determine, by the first BS, one or more symbols of a first set of subframes in which at least one reference signal is to be received, wherein the at least one reference signal is for synchronization with at least a second BS, wherein discovery reference signals and the at least one reference signal for synchronization are separately managed; refrain, by the first BS, from transmitting during the determined one or more symbols and during at least one of a first symbol or a second symbol in at least a subset of subframes in the first set of subframes, the first symbol preceding the one or more symbols in which the at least one reference signal for synchronization is received from the second BS and the second symbol being subsequent to the one or more symbols in which the at least one reference signal for synchronization is received from the second BS; transmit, by the first BS, a discovery reference signal during a second set of one or more symbols when the at least second BS transmits a second discovery reference signal; and receive the at least one reference signal for synchronization in the one or more symbols of the first set of subframes. - View Dependent Claims (20, 21, 22, 23)
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24. A non-transitory computer-readable medium storing computer executable code for wireless communication at a first base station (BS), comprising code to:
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determine, by the first BS, one or more symbols of a first set of subframes in which at least one reference signal is to be received, wherein the at least one reference signal is for synchronization with at least a second BS, wherein discovery reference signals and the at least one reference signal for synchronization are separately managed; refrain, by the first BS, from transmitting during the determined one or more symbols and during at least one of a first symbol or a second symbol in at least a subset of subframes in the first set of subframes, the first symbol preceding the one or more symbols in which the at least one reference signal for synchronization is received from the second BS and the second symbol being subsequent to the one or more symbols in which the at least one reference signal for synchronization is received from the second BS; transmit, by the first BS, a discovery reference signal during a second set of one or more symbols when the at least second BS transmits a second discovery reference signal; and receive the at least one reference signal for synchronization in the one or more symbols of the first set of subframes. - View Dependent Claims (25, 26, 27, 28)
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Specification