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:
configuring, by a base station, a radio resource management (RRM) measurement configuration for one or more user equipments (UEs) in a wireless network, wherein the RRM measurement configuration includes both a synchronization signal (SS) block and a channel state information reference signal (CSI-RS) to be measured for an RRM measurement;
configuring a measurement gap included in the RRM measurement configuration with a measurement gap length (MGL) within which the SS block and the CSI-RS are configured without overlapping in the time domain for the RRM measurement, wherein the MGL varies with the RRM measurement configuration; and
sending the RRM measurement configuration to the one or more UEs.
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 measurement configuration is sent through dedicated signaling.
6. 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 PDSCH symbol after the SS block.
7. The method of claim 6 , wherein a same analog beamforming applies to both the SS burst block and the CSI-RS burst block.
8. 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 includes both a synchronization signal (SS) block and a channel state information reference signal (CSI-RS) to be measured for an RRM measurement;
obtaining a measurement gap configured in the RRM measurement configuration with a measurement gap length (MGL) within which the SS block and the CSI-RS are configured by the network to be without overlapping in the time domain for the RRM measurement, wherein the MGL varies with the RRM measurement configuration; and
performing the RRM measurement by measuring both the SS block and the CSI-RS indicated by the RRM measurement configuration.
9. The method of claim 8 , wherein a single common measurement duration and a single common measurement timing offset are configured for different CSI-RS resources.
10. The method of claim 9 , 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.
11. The method of claim 8 , wherein each CSI-RS configuration reuses a beam management configuration of each corresponding CSI-RS if its corresponding cell ID indicates a serving cell.
12. The method of claim 8 , wherein the RRM measurement configuration is configured by dedicated signaling.
13. The method of claim 8 , wherein the SS block is an SS burst block across multiple analog beams, and wherein CSI-RS is allocated in a PDSCH symbol after the SS block.
14. The method of claim 13 , wherein a same analog beamforming applies to both the SS burst block and the CSI-RS burst block.
15. A base station, comprising:
a transceiver that transmits and receives radio frequency (RF) signals from one or more user equipments (UEs) in a wireless network;
a radio resource management (RRM) measurement configuration module that configures an RRM measurement configuration for one or more user equipments (UEs) in a wireless network, wherein the RRM measurement configuration includes both a synchronization signal (SS) block and a channel state information reference signal (CSI-RS) to be measured for an RRM measurement;
an RRM measurement gap module that configures a measurement gap included in the RRM measurement configuration with a measurement gap length (MGL) within which the SS block and the CSI-RS are configured without overlapping in the time domain for the RRM measurement, wherein the MGL varies with the RRM measurement configuration; and
an RRM measurement control module that sends the RRM measurement configuration to the one or more UEs.
16. The base station of claim 15 , wherein a single common measurement duration and a single common measurement timing offset are configured for different CSI-RS resources.
17. The base station of claim 16 , 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.
18. The base station of claim 15 , wherein each CSI-RS configuration reuses a beam management configuration of each corresponding CSI-RS if its corresponding cell ID indicates a serving cell.
19. The base station of claim 15 , wherein the SS block is an SS burst block across multiple analog beams, and wherein CSI-RS is allocated in a PDSCH symbol after the SS block.
20. The base station of claim 15 , wherein a same analog beamforming applies to both the SS burst block and the CSI-RS burst block.