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US 11,153,837 B2Granted
Synchronization for wireless communication systems
AssigneeQUALCOMM Incorporated
InventorsNavid Abedini, Saurabha Rangrao Tavildar, Peter Gaal
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Abstract
A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines that a first external timing source timing signal is available at a first UE. The apparatus also synchronizes the first UE using the first external timing source based timing signal when the first external timing source timing signal is available. Additionally, the apparatus transmits a synchronization signal indicating that the first UE is synchronized using an external timing source timing signal.
Claims20
A method of wireless communication at a user equipment (UE), the method comprising:
- synchronizing the UE using a Global Navigation Satellite System (GNSS) based timing signal when the GNSS based timing signal is available, wherein synchronization is based on a hierarchy that prioritizes synchronization of the UE indirectly with the GNSS up to a threshold quantity of multiple hops over synchronization of the UE directly with a base station;
- and
- transmitting a synchronization signal indicating that the UE is synchronized, the synchronization using the GNSS based timing signal, wherein the transmitting of the synchronization signal further indicates that the UE is at least one of synchronized directly or indirectly to the GNSS based timing signal based on a resource used to transmit the synchronization signal,
- wherein the synchronization signal is transmitted on a first resource indicated by a first synchronization offset indicator when the UE is synchronized indirectly to the GNSS based timing signal through another UE, and
- wherein the synchronization signal is transmitted on a second resource indicated by a second synchronization offset indicator when the UE is synchronized directly to the GNSS based timing signal.
2 more elements
An apparatus for wireless communication, comprising:
- a memory;
- and
- at least one processor coupled to the memory and configured to:
- synchronize the apparatus using a Global Navigation Satellite System (GNSS) based timing signal when the GNSS based timing signal is available, wherein synchronization is based on a hierarchy that prioritizes synchronization of the apparatus indirectly with the GNSS up to a threshold quantity of multiple hops over synchronization of the apparatus directly with a base station;
- and
- transmit a synchronization signal indicating that the apparatus is synchronized, the synchronization using the GNSS based timing signal, wherein the transmitting of the synchronization signal further indicates that the apparatus is at least one of synchronized directly or indirectly to the GNSS based timing signal based on a resource used to transmit the synchronization signal,
- wherein the synchronization signal is transmitted on a first resource indicated by a first synchronization offset indicator when the apparatus is synchronized indirectly to the GNSS based timing signal through a user equipment, and
- wherein the synchronization signal is transmitted on a second resource indicated by a second synchronization offset indicator when the apparatus is synchronized directly to the GNSS based timing signal.
5 more elements
An apparatus for wireless communication, comprising:
- means for synchronizing the apparatus using a Global Navigation Satellite System (GNSS) based timing signal when the GNSS based timing signal is available, wherein synchronization is based on a hierarchy that prioritizes synchronization of the apparatus indirectly with the GNSS up to a threshold quantity of multiple hops over synchronization of the apparatus directly with a base station;
- and
- means for transmitting a synchronization signal indicating that the apparatus is synchronized, the synchronization using the GNSS based timing signal, wherein the transmitting of the synchronization signal further indicates that the apparatus is at least one of synchronized directly or indirectly to the GNSS based timing signal based on a resource used to transmit the synchronization signal,
- wherein the synchronization signal is transmitted on a first resource indicated by a first synchronization offset indicator when the apparatus is synchronized indirectly to the GNSS based timing signal through a user equipment, and
- wherein the synchronization signal is transmitted on a second resource indicated by a second synchronization offset indicator when the apparatus is synchronized directly to the GNSS based timing signal.
2 more elements
A non-transitory computer-readable medium storing computer executable code, the code when executed by a processor of an apparatus, causes the processor to:
- synchronize the apparatus using a Global Navigation Satellite System (GNSS) based timing signal when the GNSS based timing signal is available, wherein synchronization is based on a hierarchy that prioritizes synchronization of the apparatus indirectly with the GNSS up to a threshold quantity of multiple hops over synchronization of the apparatus directly with a base station;
- and
- transmit a synchronization signal indicating that the apparatus is synchronized, the synchronization using the GNSS based timing signal, wherein the transmitting of the synchronization signal further indicates that the apparatus is at least one of synchronized directly or indirectly to the GNSS based timing signal based on a resource used to transmit the synchronization signal,
- wherein the synchronization signal is transmitted on a first resource indicated by a first synchronization offset indicator when the apparatus is synchronized indirectly to the GNSS based timing signal through a user equipment, and
- wherein the synchronization signal is transmitted on a second resource indicated by a second synchronization offset indicator when the apparatus is synchronized directly to the GNSS based timing signal.
2 more elements
Dependencies are inferred from the claim text.