Bandwidth part configuration for communication of multiple reference signals for positioning
In an aspect, a UE and BS communicate data traffic in accordance with a first bandwidth part (BWP) configuration. The BS sends, to the UE in association with communication of a plurality of reference signals for positioning (e.g., PRS, SRS-P, etc.), an indication of a second BWP configuration that includes a different bandwidth than the first BWP configuration. The UE and BS communicate, for a duration of the communication of the plurality of reference signals for positioning, at least the plurality of reference signals for positioning in accordance with the second BWP configuration.
1 . A method of operating a user equipment (UE), comprising:
communicating data traffic with a base station in accordance with a first bandwidth part (BWP) configuration;
receiving, from the base station in association with communication of a plurality of reference signals for positioning, an indication of a second BWP configuration that includes a different bandwidth than the first BWP configuration; and
communicating, for a duration of the communication of the plurality of reference signals for positioning, at least the plurality of reference signals for positioning in accordance with the second BWP configuration.
2 . The method of claim 1 , wherein the plurality of reference signals comprises a positioning reference signal (PRS) and a sounding reference signal for positioning (SRS-P).
3 . The method of claim 1 , wherein the indication comprises an explicit indication of the second BWP configuration.
4 . The method of claim 1 , wherein the indication is received via radio resource control (RRC) signaling, a medium access control (MAC) control element (CE), or a downlink control information (DCI) communication.
5 . The method of claim 1 , wherein the indication comprises an implicit indication of the second BWP configuration.
6 . The method of claim 5 , wherein the implicit indication is based on a positioning reference signal (PRS) configuration, a sounding reference signal for positioning (SRS-P) configuration, or a combination thereof.
7 . The method of claim 6 , wherein the implicit indication is based upon one or more time slots at which a PRS, an SRS-P, or both, are configured.
8 . The method of claim 1 , further comprising:
performing measurements at least one of the plurality of reference signals for positioning without a measurement gap.
9 . The method of claim 1 ,
wherein the communicating in accordance with the second BWP configuration comprises performing a measurement of a positioning reference signal (PRS), and
wherein the UE ceases processing of one or more downlink channels during the measurement of the PRS.
10 . The method of claim 1 , further comprising:
communicating, between two of the plurality of reference signals for positioning, data traffic separate from the plurality of reference signals for positioning with the base station in accordance with the first BWP configuration or the second BWP configuration.
11 . The method of claim 10 ,
wherein the data traffic comprises downlink data traffic, and
wherein the downlink data traffic is time division multiplexed (TDMed) with at least one downlink reference signal for positioning among the plurality of reference signals for positioning.
12 . The method of claim 1 ,
wherein the plurality of reference signals for positioning is communicated across a plurality of positioning frequency layers, and
wherein the second BWP configuration includes one or more parameters that match a particular one of the plurality of positioning frequency layers.
13 . The method of claim 1 , wherein the plurality of reference signals for positioning is associated with a round-trip time (RTT) measurement, a multi-RTT measurement, a single-RTT measurement, a differential RTT measurement, a downlink Angle of Departure (AoD) measurement, an uplink Angle of Arrival (AoA) measurement, or a combination thereof.
14 . The method of claim 1 , further comprising:
resuming, after the communication of the plurality of reference signals, the communication of the data traffic with the base station in accordance with the first BWP configuration.
15 . The method of claim 1 , wherein a bandwidth associated with the second BWP configuration is larger than a bandwidth associated with the first BWP configuration.
16 . The method of claim 1 , wherein the communication in accordance with the first BWP configuration and the communication in accordance with the second BWP configuration occur while the UE is in radio resource control (RRC) Inactive state.
17 . The method of claim 1 , wherein the communication in accordance with the first BWP configuration and the communication in accordance with the second BWP configuration occur while the UE is in radio resource control (RRC) Connected state.
18 . The method of claim 1 , wherein the first BWP configuration is associated with a narrower bandwidth than the second BWP configuration.
19 . A user equipment (UE), comprising:
a memory;
at least one transceiver; and
at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor configured to:
communicate, via the at least one transceiver, data traffic with a base station in accordance with a first bandwidth part (BWP) configuration;
receive, via the at least one transceiver, from the base station in association with communication of a plurality of reference signals for positioning, an indication of a second BWP configuration that includes a different bandwidth than the first BWP configuration; and
communicate, via the at least one transceiver, for a duration of the communication of the plurality of reference signals for positioning, at least the plurality of reference signals for positioning in accordance with the second BWP configuration.
20 . The UE of claim 19 , wherein the plurality of reference signals comprises a positioning reference signal (PRS) and a sounding reference signal for positioning (SRS-P).
21 . The UE of claim 19 , wherein the indication comprises an explicit indication of the second BWP configuration.
22 . The UE of claim 19 , wherein the indication is received via radio resource control (RRC) signaling, a medium access control (MAC) control element (CE), or a downlink control information (DCI) communication.
23 . The UE of claim 19 , wherein the indication comprises an implicit indication of the second BWP configuration.
24 . The UE of claim 23 , wherein the implicit indication is based on a positioning reference signal (PRS) configuration, a sounding reference signal for positioning (SRS-P) configuration, or a combination thereof.
25 . The UE of claim 24 , wherein the implicit indication is based upon one or more time slots at which a PRS, and/or an SRS-P, or both, are configured.
26 . The UE of claim 19 , wherein the at least one processor is further configured to:
perform measurements at least one of the plurality of reference signals for positioning without a measurement gap.
27 . The UE of claim 19 ,
wherein the communication in accordance with the second BWP configuration comprises performing a measurement of a positioning reference signal (PRS), and
wherein the UE ceases processing of one or more downlink channels during the measurement of the PRS.
28 . The UE of claim 19 , wherein the at least one processor is further configured to:
communicate, via the at least one transceiver, between two of the plurality of reference signals for positioning, data traffic separate from the plurality of reference signals for positioning with the base station in accordance with the first BWP configuration or the second BWP configuration.
29 . The UE of claim 28 ,
wherein the data traffic comprises downlink data traffic, and
wherein the downlink data traffic is time division multiplexed (TDMed) with at least one downlink reference signal for positioning among the plurality of reference signals for positioning.
30 . The UE of claim 19 ,
wherein the plurality of reference signals for positioning is communicated across a plurality of positioning frequency layers, and
wherein the second BWP configuration includes one or more parameters that match a particular one of the plurality of positioning frequency layers.