Radio resource management (RRM) measurement for new radio (NR) network
Apparatus and methods are provided for RRM measurement in the NR network. In one novel aspect, the RRM measurement is configured with one measurement gap for SS block and CSI-RS. In one embodiment, an extended MGL (eMGL) is configured such that the SS block and CSI-RS is measurement within one measurement gap. In another embodiment, the shorter MGL (sMGL) that is shorter than the standard MGL is configured. In another novel aspect, the CSI-RS is allocated adjacent to the SS blocks such that one measurement gap is configured for both the SS block and CSI-RS measurement. In another novel aspect, the CSI-RS measurement is conditionally configured. In yet another novel aspect, the UE decodes the time index of the SS block conditionally.
1. A method comprising:
obtaining a radio resource management (RRM) measurement configuration by a user equipment (UE) in a wireless network, wherein the RRM measurement configuration indicates includes both a synchronization signal (SS) block and a channel state information reference signal (CSI-RS) are to be measured for an RRM measurement;
obtaining an RRM a measurement gap configuration configured in the RRM measurement configuration, wherein a measurement gap for the RRM measurement is configured by the RRM measurement configuration with a measurement gap length (MGL), and wherein within which the SS block and the CSI-RS are configured by the network to be adjacent to each other without overlapping in the time domain for the RRM measurement within the measurement gap;
performing the RRM measurement by measuring both the SS block and the CSI-RS based on indicated by the RRM measurement configuration and the RRM measurement gap configuration.
2. The method of claim 1 , wherein a single common measurement duration and a single common measurement timing offset are configured for different CSI-RS resources.
3. The method of claim 2 , wherein each CSI-RS is configured with one or more parameters comprising: a cell identification (ID), a scrambling ID, a periodicity and timing offset of the CSI-RS, a measurement bandwidth of the CSI-RS, a frequency location, a numerology of the CSI-RS, and a quasi-co-location (QCL) of the CSI-RS.
4. The method of claim 1 , wherein each CSI-RS configuration reuses a beam management configuration of each corresponding CSI-RS if its corresponding cell ID indicates a serving cell.
5. The method of claim 1 , wherein the RRM configuration and the measurement gap configuration are configured by dedicated signaling.
6. The method of claim 1 , wherein the CSI-RS is allocated in a physical downlink shared channel (PDSCH) symbol after the SS block.
7. The method of claim 1 , wherein the SS block is an SS burst block across multiple analog beams, and wherein CSI-RS is allocated in a physical downlink shared channel (PDSCH) symbol after the SS block.
8. The method of claim 7 , wherein the same analog beamforming applies to both the SS burst block and the CSI-RS burst block.
9. A user equipment (UE), comprising:
a transceiver that transmits and receives radio frequency (RF) signals from one or more base stations (BS) in a wireless network;
a radio resource management (RRM) measurement configuration circuit that obtains an RRM measurement configuration, wherein the RRM measurement configuration indicates includes both a synchronization signal (SS) block and a channel state information reference signal (CSI-RS) are to be measured for an RRM measurement;
an RRM measurement gap circuit that obtains an RRM a measurement gap configuration configured in the RRM measurement configuration, wherein a measurement gap for the RRM measurement is configured by the RRM measurement configuration with a measurement gap length (MGL), and wherein within which the SS block and the CSI-RS are configured by the network to be adjacent to each other without overlapping in the time domain for the RRM measurement within the measurement gap;
an RRM measurement circuits that performs the RRM measurement by measuring both the SS block and the CSI-RS based on indicated by the RRM measurement configuration and the RRM measurement gap configuration.
10. The UE of claim 9 , wherein a single common measurement duration and a single common measurement timing offset are configured for different CSI-RS resources.
11. The UE of claim 10 , wherein each CSI-RS is configured with one or more parameters comprising: a cell identification (ID), a scrambling ID, a periodicity and timing offset of the CSI-RS, a measurement bandwidth of the CSI-RS, a frequency location, a numerology of the CSI-RS, and a quasi-co-location (QCL) of the CSI-RS.
12. The UE of claim 9 , wherein each CSI-RS configuration reuses a beam management configuration of each corresponding CSI-RS if its corresponding cell ID indicates a serving cell.
13. The UE of claim 9 , wherein the RRM configuration and the measurement gap configuration are configured by dedicated signaling.
14. The UE of claim 9 , wherein the CSI-RS is allocated in a physical downlink shared channel (PDSCH) symbol after the SS block.
15. The UE of claim 9 , wherein the SS block is an SS burst block across multiple analog beams, and wherein CSI-RS is allocated in a physical downlink shared channel (PDSCH) symbol after the SS block.
16. The UE of claim 15 , wherein the same analog beamforming applies to both the SS burst block and the CSI-RS burst block.