Facilitating terminal communications in a wireless communications system
Network-assisted device discovery includes initiating the D2D network-assisted device discovery of a receiving UE to enable a target UE and the receiving UE to establish a D2D communication. A discovery feasibility measurement is performed to determine whether a D2D communication between the target UE and the receiving UE is feasible. A discovery setup message is transmitted and a discovery report is received from the target UE.
1. A method performed by a user equipment (UE) in a wireless communication network, the method comprising:
receiving, from a base station, configuration information associated with synchronization signal transmission; and
transmitting, to another UE, a synchronization signal for a terminal-to-terminal link; and
transmitting, to the other UE, system information for the terminal-to-terminal link,
wherein the system information for the terminal-to-terminal link includes first information indicating a frame number of a frame in which the synchronization signal for the terminal-to-terminal link is transmitted.
2. The method of claim 1 , wherein the UE is in coverage of a network.
3. The method of claim 1 , wherein a timing of the system information for the terminal-to-terminal link is determined in respect to a timing of the synchronization signal.
4. The method of claim 1 , wherein the configuration information includes at least one of a time resource for transmitting the synchronization signal or an identifier (ID) for generating the synchronization signal.
5. The method of claim 1 , wherein the configuration information includes a power parameter for transmitting the synchronization signal.
6. The method of claim 1 , wherein of the configuration information is transmitted via a radio resource control (RRC) signaling or a system information block message, and
wherein the synchronization signal for the terminal-to-terminal link and the system information for the terminal-to-terminal link are transmitted based on the configuration information.
7. The method of claim 1 , wherein the synchronization signal comprises a primary synchronization signal for the terminal-to-terminal link and a secondary synchronization signal for the terminal-to-terminal link, and
wherein the synchronization signal is transmitted over a duration according to a periodicity.
8. A user equipment (UE) in a wireless communication network, the UE comprising:
a transceiver configured to:
receive, from a base station, configuration information associated with a synchronization signal transmission,
transmit, to another UE, a synchronization signal for a terminal-to-terminal link, and
transmit, to the other UE, system information for the terminal-to-terminal link,
wherein the system information for the terminal-to-terminal link includes first information indicating a frame number of a frame in which the synchronization signal for the terminal-to-terminal link is transmitted.
9. The UE of claim 8 , wherein the UE is in coverage of a network.
10. The UE of claim 8 , wherein a timing of the system information for the terminal-to-terminal link is determined in respect to a timing of the synchronization signal.
11. The UE of claim 8 , wherein the configuration information includes at least one of a time resource for transmitting the synchronization signal, or an identifier (ID) for generating the synchronization signal.
12. The UE of claim 8 , wherein the configuration information includes a power parameter for transmitting the synchronization signal.
13. The UE of claim 8 , wherein the configuration information is transmitted via a radio resource control (RRC) signaling, or a system information block message, and
wherein the synchronization signal for the terminal-to-terminal link and the system information for the terminal-to-terminal link are transmitted based on the configuration information.
14. The UE of claim 8 , wherein the synchronization signal comprises a primary synchronization signal for the terminal-to-terminal link and a secondary synchronization signal for the terminal-to-terminal link, and
wherein the synchronization signal is transmitted over a duration according to a periodicity.
15. A base station in a wireless communication network, the base station comprising:
a transceiver configured to transmit, to a user equipment (UE), configuration information associated with a synchronization signal transmission,
wherein the UE is configured to transmit, to another UE, a synchronization signal for a terminal-to-terminal link, and system information for the terminal-to-terminal link,
wherein the system information for the terminal-to-terminal link includes at least one of first information indicating a frame number of a frame in which the synchronization signal for the terminal-to-terminal link is transmitted.
16. The base station of claim 15 , wherein the UE is in coverage of a network.
17. The base station of claim 15 , wherein a timing of the system information for the terminal-to-terminal link is determined in respect to a timing of the synchronization signal.
18. The base station of claim 15 , wherein the configuration information includes at least one of a time resource for transmitting the synchronization signal, or an identifier (ID) for generating the synchronization signal.
19. The base station of claim 15 , wherein the configuration information includes a power parameter for transmitting the synchronization signal.
20. The base station of claim 15 , wherein the synchronization signal comprises a primary synchronization signal for the terminal-to-terminal link and a secondary synchronization signal for the terminal-to-terminal link, and
wherein the synchronization signal is transmitted over a duration according to a periodicity.