Systems and methods for wireless signal measurement and reporting for device to-device communication
Methods, systems, and devices for configuration and reporting of proximity detection measurements are disclosed herein. User equipment (UE) is configured to receive and store a PD-RS list from an evolved universal terrestrial radio access network (E-UTRAN) node B (eNB). The PD-RS list includes a radio resource configuration for at least a first proximity discovery reference signal (PD-RS). The UE is configured to measure at least the first PD-RS to determine a signal parameter for the first PD-RS. The UE reports the signal parameter for the first PD-RS to the eNB.
1. User equipment (UE) comprising processing circuitry configured to:
receive and store a proximity discovery reference signal (PD-RS) list from an evolved universal terrestrial radio access network (E-UTRAN) node B (eNB), the PD-RS list comprising a radio resource configuration for at least a first PD-RS;
receive a restricted discovery mode configuration, wherein the restricted discovery mode configuration configures the UE to only measure PD-RSs listed in the PD-RS list;
measure at least the first PD-RS to determine a signal parameter for the first PD-RS; and
report the signal parameter for the first PD-RS to the eNB.
2. The UE of claim 1 , wherein the radio resource configuration for the first PD-RS comprises a transmission offset, the transmission offset indicating a transmission power of the first PD-RS.
3. The UE of claim 1 , wherein the radio resource configuration for the first PD-RS comprises an identifier for the first PD-RS.
4. The UE of claim 1 , wherein receiving and storing the PD-RS list comprises receiving a PD-RS addition message comprising the radio resource configuration for the first PD-RS and storing the radio resource configuration in the PD-RS list.
5. The UE of claim 1 , wherein receiving and storing the PD-RS list comprises receiving a PD-RS replacement message comprising the radio resource configuration for the first PD-RS and storing the radio resource configuration in the PD-RS list to replace previous radio resource configuration information.
6. The UE of claim 1 , wherein the processing circuitry is further configured to receive a PD-RS removal message indicating removal of an entry for a second PD-RS and remove the entry for the second PD-RS from the PD-RS list in response to receiving the PD-RS removal message.
7. The UE of claim 5 , wherein the PD-RS removal message comprises an index for the entry for the second PD-RS.
8. User equipment (UE) comprising processing circuitry configured to:
receive and store a proximity discovery reference signal (PD-RS) list from an evolved universal terrestrial radio access network (E-UTRAN) node B (eNB), the PD-RS list comprising a radio resource configuration for at least a first PD-RS;
receive a PD-RS removal message indicating removal of an entry for a second PD-RS and remove the entry for the second PD-RS from the PD-RS list in response to receiving the PD-RS removal message;
measure at least the first PD-RS to determine a signal parameter for the first PD-RS; and
report the signal parameter for the first PD-RS to the eNB.
9. The UE of claim 8 , wherein the radio resource configuration for the first PD-RS comprises a transmission offset, the transmission offset indicating a transmission power of the first PD-RS.
10. The UE of claim 8 , wherein the radio resource configuration for the first PD-RS comprises an identifier for the first PD-RS.
11. The UE of claim 8 , wherein the processing circuitry is further configured to receive an open discovery mode configuration, wherein the open discovery mode configuration configures the UE to measure any PD-RS in addition to the PD-RSs listed in the PD-RS list.
12. The UE of claim 8 , wherein receiving and storing the PD-RS list comprises receiving a PD-RS addition message comprising the radio resource configuration for the first PD-RS and storing the radio resource configuration in the PD-RS list.
13. The UE of claim 8 , wherein receiving and storing the PD-RS list comprises receiving a PD-RS replacement message comprising the radio resource configuration for the first PD-RS and storing the radio resource configuration in the PD-RS list to replace previous radio resource configuration information.
14. The UE of claim 8 , wherein the PD-RS removal message comprises an index for the entry for the second PD-RS.
15. User equipment (UE) comprising:
a transceiver configured to transmit and receive signals; and
a processing unit configured to cause the UE to:
receive and store a proximity discovery reference signal (PD-RS) list from an evolved universal terrestrial radio access network (E-UTRAN) node B (eNB), the PD-RS list comprising a radio resource configuration for at least a first PD-RS;
receive a restricted discovery mode configuration, wherein the restricted discovery mode configuration configures the UE to only measure PD-RSs listed in the PD-RS list;
measure at least the first PD-RS to determine a signal parameter for the first PD-RS; and
report the signal parameter for the first PD-RS to the eNB.
16. The UE of claim 15 , wherein the radio resource configuration for the first PD-RS comprises a transmission offset, the transmission offset indicating a transmission power of the first PD-RS.
17. The UE of claim 15 , wherein the radio resource configuration for the first PD-RS comprises an identifier for the first PD-RS.
18. The UE of claim 15 , wherein receiving and storing the PD-RS list comprises receiving a PD-RS addition message comprising the radio resource configuration for the first PD-RS and storing the radio resource configuration in the PD-RS list.
19. The UE of claim 15 , wherein receiving and storing the PD-RS list comprises receiving a PD-RS replacement message comprising the radio resource configuration for the first PD-RS and storing the radio resource configuration in the PD-RS list to replace previous radio resource configuration information.
20. The UE of claim 15 , wherein the processing unit is further configured to receive a PD-RS removal message indicating removal of an entry for a second PD-RS and remove the entry for the second PD-RS from the PD-RS list in response to receiving the PD-RS removal message.
21. The UE of claim 20 , wherein the PD-RS removal message comprises an index for the entry for the second PD-RS.
22. The UE of claim 15 , wherein the processing unit is further configured to receive instruction from the eNB to establish or release D2D communication with a UE corresponding to the first PD-RS.