Method for interference measurement in new radio (NR) communication systems
An apparatus configured to be employed in a victim transmission reception point (TRP) associated with a new radio (NR) communication system is disclosed. The apparatus comprises a memory interface and a processing circuit. In some embodiments, the processing circuit is configured to process one or more predefined interference signals respectively received from one or more interfering TRPs during a guard period of the victim TRP. In some embodiments, the guard period comprises a time period between a downlink (DL) transmission and an uplink (UL) transmission associated with a time division duplex (TDD) frame of the victim TRP. In some embodiments, the processing circuit is further configured to determine an inter-TRP interference based on the one or more predefined interference signals. In some embodiments, the inter-TRP interference comprises a measurement of a UL interference at the victim TRP from the one or more interfering TRPs.
1. An apparatus configured to be employed in a transmission reception point (TRP) associated with a new radio (NR) system, comprising:
a processing circuit configured to:
determine an interference measurement resource (IMR) configuration for a user equipment (UE), wherein the IMR configuration comprises a configuration information associated with a set of IMRs configured to be utilized for determining channel state information (CSI) at the UE;
generate an IMR configuration signal comprising the determined IMR configuration, to be provided to the UE, in order to provide information on the determined IMR configuration to the UE;
provide the IMR configuration signal, to an RF circuitry, for subsequent transmission of the IMR configuration signal to the UE, wherein the IMR configuration signal is provided to the UE via radio resource control (RRC) signaling; and
provide, to the UE, an indication about a periodicity of at least one IMR of the set of IMRs to be utilized by the UE to determine the CSI, wherein the indication about the periodicity of the at least one IMR comprises an information whether the at least one IMR is periodic, aperiodic or semi-persistent.
2. The apparatus of claim 1 , wherein the processing circuit is further configured to generate a channel state information (CSI) report indicator signal, to be provided to the UE, wherein the CSI report indicator signal comprises an indication on one or more IMRs from the set of IMRs in the IMR configuration, to be utilized by the UE to determine the CSI.
3. The apparatus of claim 2 , wherein, when the set of IMRs in the IMR configuration comprises a channel state information reference signal (CSI-RS) and a demodulation reference signal (DM-RS), the one or more IMRs indicated in the CSI report indicator signal comprises the CSI-RS or the DM-RS, or both.
4. The apparatus of claim 2 , wherein the processing circuit is configured to provide the CSI report indicator signal to the UE via the RRC signaling or downlink control information (DCI).
5. The apparatus of claim 1 , wherein the set of IMRs in the IMR configuration comprises one or more reference signals associated with the TRP.
6. The apparatus of claim 1 , wherein the set of IMRs in the IMR configuration comprises a channel state information reference signal (CSI-RS) or a demodulation reference signal (DM-RS), or both.
7. The apparatus of claim 1 , wherein the processing circuit is configured to determine the IMR configuration based on a measurement restriction configured for the UE.
8. The apparatus of claim 1 , wherein the processing circuit is further configured to generate a UE beam indicator signal, to be provided to the UE, wherein the UE beam indicator signal comprises information on a UE receive (Rx) beam, to be utilized by the UE to receive the set of IMRs, in order to enable the UE to determine the CSI based on the set of IMRs associated with the UE Rx beam.
9. The apparatus of claim 1 , wherein the processing circuit is further configured to generate one or more precoded downlink reference signals (DL-RS) to be utilized for cross-link interference measurement.
10. The apparatus of claim 1 , wherein the processing circuit is further configured to measure cross-link interference in uplink (UL), based on receiving downlink reference signals (DL-RS) from one or more neighboring TRPs and UL reference signals (UL-RS) from one or more UEs.
11. The apparatus of claim 1 , wherein the indication about the periodicity of the at least one IMR comprises a 1-bit indicator.
12. The apparatus of claim 1 , wherein the processing circuit is further configured to generate a quasi co-location (QCL) indication signal, to be provided to the UE, wherein the QCL indication signal comprises information on a QCL between the set of IMRs to be utilized to determine the CSI.
13. An apparatus configured to be employed in a user equipment (UE) associated with a new radio (NR) system, comprising:
a processing circuit configured to:
process an interference measurement resource (IMR) configuration signal comprising an IMR configuration for the UE, received from a TRP, wherein IMR configuration comprises a configuration information associated with a set of IMRs configured to be utilized for determining a channel state information (CSI) at the UE and wherein the IMR configuration signal is received from the TRP via radio resource control (RRC) signaling;
determine the channel state information (CSI), at least partly, based on the configuration information in the IMR configuration signal; and
receive, from the TRP, an indication about a periodicity of at least one IMR of the set of IMRs, to be utilized by the UE to determine the CSI, wherein the indication about the periodicity of the at least one IMR comprises an information whether the at least one IMR is periodic, aperiodic or semi-persistent.
14. The apparatus of claim 13 , wherein the processing circuit is further configured to process a channel state information (CSI) report indicator signal, received from the TRP, wherein the CSI report indicator signal comprises an indication on one or more IMRs from the set of IMRs in the IMR configuration, to be utilized by the UE to determine the CSI.
15. The apparatus of claim 14 , wherein, when the set of IMRs in the IMR configuration comprises a channel state information reference signal (CSI-RS) and a demodulation reference signal (DM-RS), the one or more IMRs indicated in the CSI report indicator signal comprises the CSI-RS or the DM-RS, or both.
16. The apparatus of claim 13 , wherein the set of IMRs in the IMR configuration comprises one or more reference signals associated with the TRP.
17. The apparatus of claim 13 , wherein the set of IMRs in the IMR configuration comprises a channel state information reference signal (CSI-RS) or a demodulation reference signal (DM-RS), or both.
18. The apparatus of claim 13 , wherein the processing circuit is further configured to process a UE beam indicator signal, received from the TRP, prior to determining the CSI, wherein the UE beam indicator signal comprises information on a UE receive (Rx) beam associated with the set of IMRs, to be utilized by the UE, in order to determine the CSI.
19. The apparatus of claim 13 , wherein the processing circuit is further configured to generate one or more precoded uplink reference signals (UL-RS) to be utilized for cross-link interference measurement.
20. The apparatus of claim 13 , wherein the processing circuit is further configured to measure cross-link interference in downlink (DL), based on receiving downlink reference signals (DL-RS) from one or more neighboring TRPs and UL reference signals (UL-RS) from one or more neighboring UEs, in order to determine the CSI.
21. The apparatus of claim 13 , wherein the indication about the periodicity of the at least one IMR comprises a 1-bit indicator.
22. The apparatus of claim 13 , wherein the processing circuit is further configured to process a quasi co-location (QCL) indication signal, received from the TRP, wherein the QCL indication signal comprises information on a QCL between the set of IMRs to be utilized to determine the CSI.
23. The apparatus of claim 13 , wherein the processing circuit is further configured to:
report the CSI via a CSI report signal; and
provide an IMR indicator signal comprising information on IMR utilized to determine the CSI comprised in the CSI report signal.