Methods and apparatus for discovery signals for lte advanced

A user equipment (UE) comprising:

• a transceiver configured to receive a discovery reference signal (DRS) occasion from at least one transmission point, the DRS occasion comprising a set of consecutive DRS sub-frames;
• and
• a processing circuitry configured to:
• in response to detecting a physical cell identity (PCID) of a Primary Synchronization Signal (PSS)/Secondary Synchronization Signal (SSS)/Cell-Specific Reference Signal (CRS) that is the same as a reference PCID for a configured Channel State Information-Reference Signal (CSI-RS), the processing circuitry attempts to detect or measure the CSI-RS using the timing obtained from the PSS/SSS/CRS;
• and
• in response to not detecting the PCID of PSS/SSS/CRS that is the same as the reference PCID for a configured CSI-RS resource, the processing circuitry does not attempt to detect or measure the CSI-RS.

A user equipment (UE) comprising:

• a transceiver configured to receive a discovery reference signal (DRS) occasion from at least one transmission point, the DRS occasion comprising a set of consecutive DRS sub-frames, wherein, for Frequency Division Duplexing (FDD), a first sub-frame of a DRS occasion carries a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS) and for Time Division Duplexing (TDD), the first sub-frame of a DRS occasion carries the SSS and the second sub-frame of a DRS occasion carries the PSS;
• and
• a processing circuitry configured to:
• perform DRS measurement according to the DRS configuration information to determine a reference signal received power (RSRP) of the at least one transmission point, and
• transmit, via the transceiver, a report of the DRS measurement.

A method comprising:

• receiving a discovery reference signal (DRS) occasion from at least one transmission point, the DRS occasion comprising a set of consecutive DRS sub-frames;
• and
• in response to detecting a physical cell identity (PCID) of a Primary Synchronization Signal (PSS)/Secondary Synchronization Signal (SSS)/Cell-Specific Reference Signal (CRS) that is the same as a reference PCID for a configured Channel State Information-Reference Signal (CSI-RS), attempting to detect or measure the CSI-RS using the timing obtained from the PSS/SSS/CRS;
• and
• in response to not detecting the PCID of PSS/SSS/CRS that is the same as the reference PCID for a configured CSI-RS resource, not attempting to detect or measure the CSI-RS.