Full duplex reference signal configuration
Apparatuses, methods, and systems are disclosed for interference management for full-duplex operation. One apparatus includes a processor and a transceiver that receives a first configuration from a RAN, wherein the first configuration includes one or more of: an UL full-duplex reference signal (“FD-RS”) configuration, a DL FD-RS configuration, an indication to activate the UL FD-RS configuration, and/or an indication to activate the DL FD-RS configuration, where the UL FD-RS configuration and the DL FD-RS configuration are not simultaneously activated at the apparatus. The processor performs a first activity according to the first configuration, the first activity being one or more of: transmission on received UL FD-RS resources, measurement on received UL FD-RS resources, and/or measurements on the received DL FD-RS resources.
1 . A user equipment (“UE”) for wireless communication, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
receive a first configuration from a radio access network (“RAN”), wherein the first configuration comprises at least one of:
an uplink (“UL”) full-duplex reference signal (“FD-RS”) configuration, wherein the UL FD-RS configuration indicates at least time-frequency resources, a multiplexing type, and time-domain behavior for UL FD-RS transmission or measurement;
a downlink (“DL”) FD-RS configuration, wherein the DL FD-RS configuration indicates at least time-frequency resources, a multiplexing type, and time-domain behavior for DL FD-RS reception and measurement;
a first indication to activate the UL FD-RS configuration and to perform one or more corresponding transmissions or first measurements;
a second indication to activate the DL FD-RS configuration received with the first configuration and to perform one or more corresponding second measurements;
or some combination thereof, wherein the first configuration does not include both the first indication and the second indication, and the UE is not simultaneously activated with the UL FD-RS configuration and the DL FD-RS configuration; and
perform a first activity according to the first configuration, wherein the first activity is selected from:
performing a transmission on received UL FD-RS resources when the first configuration comprises the UL FD-RS configuration;
performing a first measurement on received UL FD-RS resources when the first configuration comprises the UL FD-RS configuration; and
performing a second measurement on received DL FD-RS resources when the first configuration comprises the DL FD-RS configuration;
or some combination thereof.
2 . The UE of claim 1 , wherein the UL FD-RS configuration or the DL FD-RS configuration, or both, are common to a plurality of UEs.
3 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive, from the RAN, a UE-specific quasi-co-location (“QCL”) assumption for at least beam indication to:
transmit an UL FD-RS;
receive a DL FD-RS;
or a combination thereof.
4 . The UE of claim 1 , wherein the first indication to activate the UL FD-RS configuration comprises an indication that full-duplex mode operation is enabled in the RAN.
5 . The UE of claim 1 , wherein the second indication to activate the DL FD-RS configuration comprises an indication that full-duplex mode operation is enabled in the RAN.
6 . The UE of claim 1 , wherein further comprising measuring UE to UE co-channel interference-when full-duplex mode operation is enabled at the RAN, the at least one processor is configured to cause the UE to measure a UE-to-UE co-channel interference using at least one of the UL FD-RS configuration and the DL FD-RS configuration.
7 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to:
receive an indication from the RAN for a type of expected measurement corresponding to a resource indicated to UE for measurement;
receive a reporting configuration from the RAN corresponding to a resource indicated for measurement, the reporting configuration comprising:
a time/frequency resource for transmission of a measurement report to the network,
a reporting time pattern a reporting criteria and reporting type,
or some combination thereof;
perform measurements according to the first configuration; and
transmit a report of the performed measurements to the RAN according to the reporting configuration.
8 . The UE of claim 7 , wherein the DL FD-RS is a zero-power (“ZP”) reference signal (“RS”), wherein the at least one processor is configured to cause the UE to perform interference measurements and to perform corresponding reporting to the RAN.
9 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to receive, from the RAN, a beam configuration from the RAN to perform adjustments to a receive (“Rx”) beam at the UE for a resource indicated for FD-RS measurements.
10 . A method performed by a user equipment (“UE”), the method comprising:
receiving a first configuration from a radio access network (“RAN”), wherein the first configuration comprises at least one of:
an uplink (“UL”) full-duplex reference signal (“FD-RS”) configuration, wherein the UL FD-RS configuration indicates at least time-frequency resources, a multiplexing type, and time-domain behavior for UL FD-RS transmission or measurement;
a downlink (“DL”) FD-RS configuration, wherein the DL FD-RS configuration indicates at least time-frequency resources, a multiplexing type, and time-domain behavior for DL FD-RS reception and measurement;
a first indication to activate the UL FD-RS configuration received with the first configuration and to perform one or more corresponding transmissions or first measurements;
a second indication to activate the DL FD-RS configuration received with the first configuration and to perform one or more corresponding second measurements;
or some combination thereof, wherein the first configuration does not include both the first indication and the second indication, and the UE is not simultaneously activated with the UL FD-RS configuration and the DL FD-RS configuration; and
performing a first activity according to the first configuration, wherein the first activity is selected from:
transmission on received UL FD-RS resources when the first configuration comprises the UL FD-RS configuration;
measurement on received UL FD-RS resources when the first configuration comprises the UL FD-RS configuration; and
measurements on received DL FD-RS resources when the first configuration comprises the DL FD-RS configuration;
or some combination thereof.
11 . A base station for wireless communication, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the base station to:
transmit a first configuration to a user equipment (“UE”), wherein the first configuration comprises at least one of:
an uplink (“UL”) full-duplex reference signal (“FD-RS”) configuration, wherein the UL FD-RS configuration indicates at least time-frequency resources, a multiplexing type, and time-domain behavior for UL FD-RS transmission or measurement;
a downlink (“DL”) FD-RS configuration, wherein the DL FD-RS configuration indicates at least time-frequency resources, a multiplexing type, and time-domain behavior for DL FD-RS measurement;
a first indication to activate the UL FD-RS configuration transmitted with the first configuration and to perform corresponding transmissions or measurements;
a second indication to activate the DL FD-RS configuration transmitted with the first configuration and to perform corresponding measurements;
or some combination thereof, wherein the first configuration does not include both the first indication and the second indication, and the UE is not simultaneously activated with the UL FD-RS configuration and the DL FD-RS configuration; and
receive a first communication from the UE, wherein the first communication comprises at least one of:
receiving an UL FD-RS transmitted on UL FD-RS resources according to the UL FD-RS configuration when the first configuration comprises the UL FD-RS configuration; or
receiving a measurement report comprising first measurements performed according to the UL FD-RS configuration when the first configuration comprises the UL FD-RS configuration or second measurements performed according to the DL FD-RS configuration when the first configuration comprises the DL FD-RS configuration.
12 . The base station of claim 11 , wherein the DL FD-RS configuration indicates a zero-power (“ZP”) reference signal (“RS”), wherein the at least one processor is configured to cause the base station to transmit, to the UE, a configuration for performing interference measurements and to performing corresponding reporting to the base station.
13 . The base station of claim 12 , wherein the at least one processor is configured to cause the base station to transmit, to the UE, a radio resource control (“RRC”) common configuration that is additionally indicated to one or more other UEs with a same reporting quantity to be reported for measurements of the ZP RS.
14 . The base station of claim 11 , wherein when full-duplex mode operation is enabled, the at least one processor is configured to cause the base station to measure self-interference at the base station using the UL FD-RS configuration or the DL FD-RS configuration.
15 . The base station of claim 11 , wherein when full-duplex mode operation is enabled, the at least one processor is configured to cause the base station to measure inter-gNB interference using the UL FD-RS configuration or the DL FD-RS configuration.
16 . The base station of claim 11 , wherein the at least one processor is configured to cause the base station to transmit, to the UE, a UE-specific Quasi-Co-Location (“QCL”) assumption for at least beam indication to:
transmit an UL FD-RS;
receive a DL FD-RS;
or a combination thereof.
17 . The base station of claim 11 , wherein the first indication to activate the UL FD-RS configuration comprises an indication that full-duplex mode operation is enabled in a radio access network (“RAN”) corresponding to the base station.
18 . The base station of claim 11 , wherein the second indication to activate the DL FD-RS configuration comprises an indication that full-duplex mode operation is enabled in a radio access network (“RAN”) corresponding to the base station.
19 . The base station of claim 11 , wherein the at least one processor is configured to cause the base station to:
transmit, to the UE, an indication for a type of expected measurement corresponding to a resource indicated for measurement;
transmit, to the UE, a reporting configuration corresponding to the resource indicated for measurement, the reporting configuration comprising:
a time/frequency resource for transmission of the measurement report,
a reporting time pattern a reporting criteria and reporting type,
or some combination thereof; and
receive the measurement report in accordance with the reporting configuration.
20 . A method performed by a base station, the method comprising:
transmitting a first configuration to a user equipment (“UE”), wherein the first configuration comprises at least one of:
an uplink (“UL”) full-duplex reference signal (“FD-RS”) configuration, wherein the UL FD-RS configuration indicates at least time-frequency resources, a multiplexing type, and time-domain behavior for UL FD-RS transmission or measurement;
a downlink (“DL”) FD-RS configuration, wherein the DL FD-RS configuration indicates at least time-frequency resources, a multiplexing type, and time-domain behavior for DL FD-RS measurement;
a first indication to activate the UL FD-RS configuration transmitted with the first configuration and to perform one or more corresponding transmissions or first measurements;
a second indication to activate the DL FD-RS configuration transmitted with the first configuration and to perform one or more corresponding second measurements;
or some combination thereof, wherein the first configuration does not include both the first indication and the second indication, and a UE is not simultaneously activated with the UL FD-RS configuration and the DL FD-RS configuration; and
receiving a first communication from the UE, wherein the first communication comprises at least one of:
an UL FD-RS transmitted on UL FD-RS resources according to the UL FD-RS configuration when the first configuration comprises the UL FD-RS configuration; or
a measurement report comprising first measurements performed according to the UL FD-RS configuration when the first configuration comprises the UL FD-RS configuration or second measurements performed according to the DL FD-RS configuration when the first configuration comprises the DL FD-RS configuration.