Receive time difference information reporting
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node, at least one signal associated with a first component carrier. The UE may receive, from the network node, at least one signal associated with a second component carrier associated with an intra-band carrier aggregation (CA) of the first component carrier and the second component carrier. The UE may transmit receive time difference (RTD) information associated with one or more RTD measurements based on the at least one signal associated with the first component carrier and the at least one signal associated with the second component carrier. Numerous other aspects are provided.
1 . A user equipment (UE) for wireless communication, comprising:
a processing system that includes processor circuitry and memory circuitry coupled with the processor circuitry, the processing system configured to cause the UE to:
receive, from a network node, at least one signal associated with a first component carrier;
receive, from the network node, at least one signal associated with a second component carrier associated with an intra-band carrier aggregation (CA) of the first component carrier and the second component carrier; and
transmit information for a receive time difference (RTD) in the intra-band CA, wherein:
the information is associated with one or more RTD measurements based on the at least one signal associated with the first component carrier and the at least one signal associated with the second component carrier, and
the RTD is based on a drift of a first clock associated with the first component carrier at the network node in relation to a second clock associated with the second component carrier at the network node.
2 . The UE of claim 1 , wherein the information for the RTD indicates at least one RTD metric associated with a sample window associated with the one or more RTD measurements, the sample window comprising a time period within which the one or more RTD measurements are obtained, the at least one RTD metric indicating at least one of:
a maximum RTD value,
a minimum RTD value,
an average RTD value,
a standard deviation value, or
a time-based trend.
3 . The UE of claim 1 , wherein the processing system is further configured to cause the UE to receive measurement configuration information associated with the one or more RTD measurements.
4 . The UE of claim 3 , wherein, to cause the UE to receive the measurement configuration information, the processing system is configured to cause the UE to receive a configuration communication indicating the measurement configuration information, the configuration communication comprising at least one of:
a radio resource control (RRC) message,
a medium access control control element (MAC CE), or
downlink control information (DCI).
5 . The UE of claim 1 , wherein the processing system is further configured to cause the UE to receive reporting configuration information associated with reporting the information for the RTD, and wherein, to cause the UE to transmit the information for the RTD, the processing system is configured to cause the UE to transmit the information for the RTD based on the reporting configuration information.
6 . The UE of claim 1 , wherein the processing system is further configured to cause the UE to:
store the information for the RTD in a memory of the UE; and
perform, based on the information for the RTD, a cell access procedure associated with the network node.
7 . The UE of claim 6 , wherein the cell access procedure is associated with at least one of inter-band CA at the network node or intra-band CA at the network node.
8 . The UE of claim 6 , wherein the cell access procedure is associated with a synchronization signal block (SSB)-less cell provided by the network node.
9 . A network node for wireless communication, comprising:
a processing system that includes processor circuitry and memory circuitry coupled with the processor circuitry, the processing system configured to cause the network node to:
transmit at least one signal associated with a first component carrier;
transmit at least one signal associated with a second component carrier associated with an intra-band carrier aggregation (CA) of the first component carrier and the second component carrier; and
receive information for a receive time difference (RTD) in the intra-band CA, wherein:
the information is associated with one or more RTD measurements based on the at least one signal associated with the first component carrier and the at least one signal associated with the second component carrier, and
the RTD is based on a drift of a first clock associated with the first component carrier at the network node in relation to a second clock associated with the second component carrier at the network node.
10 . The network node of claim 9 , wherein the information for the RTD indicates at least one RTD metric associated with a sample window associated with the one or more RTD measurements, the sample window comprising a time period within which the one or more RTD measurements are obtained, the at least one RTD metric indicating at least one of:
a maximum RTD value,
a minimum RTD value,
an average RTD value,
a standard deviation value, or
a time-based trend.
11 . The network node of claim 9 , wherein the processing system is further configured to cause the network node to transmit measurement configuration information associated with the one or more RTD measurements.
12 . The network node of claim 11 , wherein, to cause the network node to transmit the measurement configuration information, the processing system is configured to cause the network node to transmit a configuration communication indicating the measurement configuration information, the configuration communication comprising at least one of:
a radio resource control (RRC) message,
a medium access control control element (MAC CE), or
downlink control information (DCI).
13 . The network node of claim 9 , wherein the processing system is further configured to cause the network node to transmit reporting configuration information associated with reporting the information for the RTD.
14 . The network node of claim 9 , wherein the processing system is further configured to cause the network node to perform, based on the information for the RTD, a cell access procedure associated with a user equipment (UE).
15 . The network node of claim 14 , wherein the cell access procedure is associated with at least one of inter-band CA at the network node or intra-band CA at the network node.
16 . The network node of claim 14 , wherein the cell access procedure is associated with a synchronization signal block (SSB)-less cell provided by the network node.
17 . A method of wireless communication performed by an apparatus at a user equipment (UE), comprising:
receiving, from a network node, at least one signal associated with a first component carrier;
receiving, from the network node, at least one signal associated with a second component carrier associated with an intra-band carrier aggregation (CA) of the first component carrier and the second component carrier; and
transmitting information for a receive time difference (RTD) in the intra-band CA, wherein:
the information is associated with one or more RTD measurements based on the at least one signal associated with the first component carrier and the at least one signal associated with the second component carrier, and
the RTD is based on a drift of a first clock associated with the first component carrier at the network node in relation to a second clock associated with the second component carrier at the network node.
18 . The method of claim 17 , wherein the information for the RTD indicates at least one RTD metric associated with a sample window associated with the one or more RTD measurements, the sample window comprising a time period within which the one or more RTD measurements are obtained, the at least one RTD metric indicating at least one of:
a maximum RTD value,
a minimum RTD value,
an average RTD value,
a standard deviation value, or
a time-based trend.
19 . The method of claim 17 , further comprising receiving measurement configuration information associated with the one or more RTD measurements.
20 . The method of claim 19 , wherein receiving the measurement configuration information comprises receiving a configuration communication indicating the measurement configuration information, the configuration communication comprising at least one of:
a radio resource control (RRC) message,
a medium access control control element (MAC CE), or
downlink control information (DCI).
21 . The method of claim 17 , further comprising receiving reporting configuration information associated with reporting the information for the RTD, wherein transmitting the information for the RTD comprises transmitting the information for the RTD based on the reporting configuration information.
22 . The method of claim 17 , further comprising:
storing the information for the RTD in a memory of the UE; and
performing, based on the information for the RTD, a cell access procedure associated with the network node.
23 . The method of claim 22 , wherein the cell access procedure is associated with at least one of inter-band CA at the network node or intra-band CA at the network node.
24 . The method of claim 22 , wherein the cell access procedure is associated with a synchronization signal block (SSB)-less cell provided by the network node.
25 . A method of wireless communication performed by an apparatus at a network node, comprising:
transmitting at least one signal associated with a first component carrier;
transmitting at least one signal associated with a second component carrier associated with an intra-band carrier aggregation (CA) of the first component carrier and the second component carrier; and
receiving information for a receive time difference (RTD) in the intra-band CA, wherein:
the information is associated with one or more RTD measurements based on the at least one signal associated with the first component carrier and the at least one signal associated with the second component carrier, and
the RTD is based on a drift of a first clock associated with the first component carrier at the network node in relation to a second clock associated with the second component carrier at the network node.
26 . The method of claim 25 , wherein the information for the RTD indicates at least one RTD metric associated with a sample window associated with the one or more RTD measurements, the sample window comprising a time period within which the one or more RTD measurements are obtained, the at least one RTD metric indicating at least one of:
a maximum RTD value,
a minimum RTD value,
an average RTD value,
a standard deviation value, or
a time-based trend.
27 . The method of claim 25 , further comprising transmitting measurement configuration information associated with the one or more RTD measurements.
28 . The method of claim 27 , wherein transmitting the measurement configuration information comprises transmitting a configuration communication indicating the measurement configuration information, the configuration communication comprising at least one of:
a radio resource control (RRC) message,
a medium access control control element (MAC CE), or
downlink control information (DCI).
29 . The method of claim 25 , further comprising transmitting reporting configuration information associated with reporting the information for the RTD.
30 . The method of claim 25 , further comprising performing, based on the information for the RTD, a cell access procedure associated with a user equipment (UE).