Power control of device-to-device synchronization signal
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsZhenshan Zhao, Stefano Sorrentino
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Abstract
A method and system for setting a power of a secondary device-to-device synchronization signal, SD2DSS, by a first wireless device to enable a second wireless device to synchronize timing of the second wireless device to a timing of the first wireless device are disclosed. According to one aspect, a method includes determining power of a first signal transmitted by the first wireless device, and setting the power of the SD2DSS based on the power of the first signal.
Claims16
A method of setting a power of a secondary device-to-device synchronization signal, SD2DSS, by a first wireless device to enable a second wireless device to synchronize timing of the second wireless device to a timing derived from the first wireless device, the method comprising:
- determining power of a primary device to device synchronization signal, PD2DSS, transmitted by the first wireless device;
- setting the power of the SD2DSS to be less than the power of the PD2DSS;
- and
- transmitting the SD2DSS with a power less than the PD2DSS.
A wireless device configured to set a power of a secondary device-to-device synchronization signal, SD2DSS, to enable a second wireless device to synchronize timing of the second wireless device to a timing of the wireless device, the wireless device comprising:
- a processor;
- and
- a memory, the memory containing instructions executable by the processor, the instructions when executed configure the processor to:
- determine power of a primary device to device synchronization signal, PD2DSS, transmitted by the wireless device;
- set the power of the SD2DSS to be less than the power of the PD2DSS;
- and
- transmit the SD2DSS with a power less than the PD2DSS.
A method of determining and transmitting one of a power offset and a power threshold to a wireless device, the method comprising:
- determining at least one of a power offset and a power threshold for setting a power of a secondary device to device synchronization signal, SD2DSS, by a wireless device, the SD2DSS being transmitted with a power less than a primary device to device synchronization signal, PD2DSS;
- and
- transmitting at least one of the power offset and the power threshold to the wireless device.
A network node, comprising:
- a processor;
- a memory containing instructions that when executed by the processor configure the processor to determine at least one of a power offset and a power threshold for setting a power of secondary device to device synchronization signal, SD2DSS by a wireless device;
- a communication interface configured to transmit at least one of the power offset and the power threshold to the wireless device, the power of the SD2DSS being transmitted with a power less than a primary device to device synchronization signal, PD2DSS;
- and
- the memory configured to store the at least one of the power offset and the power threshold.
Dependencies are inferred from the claim text.