Collision handling for positioning reference signals
Systems and methods for generating and configuring priority indication parameters associated with positioning measurements and calculations are provided herein. A priority indicator can be signaled to a wireless device and used for determining a priority associated with a positioning reference signal and an overlapping downlink channel transmission. The wireless device selects which overlapping transmission to measure/receive/process and which to drop.
1 . A method performed by a wireless device, the method comprising:
transmitting an indication that the wireless device is configured to measure positioning reference signals (PRSs) without configuration of a measurement gap;
receiving configuration information including a priority indicator, the priority indicator indicating a priority of reception of at least one channel with respect to reception of PRSs;
determining a priority associated with a PRS transmission and an overlapping downlink (DL) channel transmission in accordance with the priority indicator; and
responsive to determining that the PRS priority is higher than the DL channel, measuring at least one PRS outside of the measurement gap;
responsive to determining that the PRS priority is lower than the DL channel, receiving the DL channel transmission.
2 . The method of claim 1 , wherein the priority indicator is received in a Downlink Control Information (DCI) message.
3 . The method of claim 2 , wherein the DCI message dynamically schedules the DL channel.
4 . The method of claim 2 , wherein the DCI message is one of: a DL DCI format 1_1 or a DL DCI format 1_2.
5 . The method of claim 1 , wherein the priority indicator indicates that the PRS priority is lower than a first type of data on the DL channel, and the PRS priority is higher than a second type of data on the DL channel.
6 . The method of claim 5 , wherein the first type of data is ultra-reliable low latency communication (URLLC).
7 . The method of claim 1 , wherein the priority indicator is received in one of: a RRC message, a MAC CE message and PRS configuration information.
8 . The method of claim 1 , wherein the priority indicator is received in one of: a PDSCH-Config information element (IE), a SPS-Config IE, a NZP-CSI-RS-Resource IE, a NZP-CSI-RS-ResourceSet IE, a CSI-ResourceConfig IE, and a CSI-Aperiodic TriggerStateList IE.
9 . The method of claim 1 , wherein the priority indicator indicates that the PRS priority is lower than at least one of: a periodic reference signal, an aperiodic reference signal, and a semi-persistent reference signal.
10 . The method of claim 1 , wherein the DL channel is one of a physical downlink shared channel (PDSCH) and a physical downlink control channel (PDCCH).
11 . The method of claim 1 , wherein the DL channel is dynamically scheduled.
12 . A wireless device comprising a radio interface and processing circuitry configured to:
transmit an indication that the wireless device is configured to measure positioning reference signals (PRSs) without configuration of a measurement gap;
receive configuration information including a priority indicator, the priority indicator indicating a priority of reception of at least one channel with respect to reception of PRSs;
determine a priority associated with a PRS transmission and an overlapping downlink (DL) channel transmission in accordance with the priority indicator; and
responsive to determining that the PRS priority is higher than the DL channel, measure at least one PRS outside of the measurement gap;
responsive to determining that the PRS priority is lower than the DL channel, receive the DL channel transmission.
13 . The wireless device of claim 12 , wherein the priority indicator is received in a Downlink Control Information (DCI) message.
14 . The wireless device of claim 13 , wherein the DCI message dynamically schedules the DL channel.
15 . The wireless device of claim 13 , wherein the DCI message is one of: a DL DCI format 1_1 or a DL DCI format 1_2.
16 . The wireless device of claim 12 , wherein the priority indicator indicates that the PRS priority is lower than a first type of data on the DL channel, and the PRS priority is higher than a second type of data on the DL channel.
17 . The wireless device of claim 16 , wherein the first type of data is ultra-reliable low latency communication (URLLC).
18 . The wireless device of claim 12 , wherein the priority indicator is received in one of: a RRC message, a MAC CE message and PRS configuration information.
19 . The wireless device of claim 12 , wherein the priority indicator is received in one of: a PDSCH-Config information element (IE), a SPS-Config IE, a NZP-CSI-RS-Resource IE, a NZP-CSI-RS-ResourceSet IE, a CSI-ResourceConfig IE, and a CSI-AperiodicTriggerStateList IE.
20 . The wireless device of claim 12 , wherein the priority indicator indicates that the PRS priority is lower than at least one of: a periodic reference signal, an aperiodic reference signal, and a semi-persistent reference signal.
21 . The wireless device of claim 12 , wherein the DL channel is one of a physical downlink shared channel (PDSCH) and a physical downlink control channel (PDCCH).
22 . The wireless device of claim 12 , wherein the DL channel is dynamically scheduled.
23 . A method performed by a network node, the method comprising:
obtaining capability information indicating that a wireless device is configured to measure positioning reference signals (PRSs) without configuration of a measurement gap;
generating configuration information including a priority indicator indicating a priority of reception of at least one channel with respect to reception of PRSs, wherein the priority indicator indicates that the PRS priority is lower than a first type of data on the DL channel, and the PRS priority is higher than a second type of data on the DL channel; and
transmitting, to the wireless device, the configuration information including the priority indicator.
24 . The method of claim 23 , wherein the priority indicator is transmitted in a Downlink Control Information (DCI) message.
25 . The method of claim 24 , wherein the DCI message dynamically schedules the DL channel.
26 . The method of claim 24 , wherein the DCI message is one of: a DL DCI format 1_1 or a DL DCI format 1_2.
27 . The method of claim 23 , wherein the priority indicator is transmitted in one of: a RRC message, a MAC CE message and PRS configuration information.
28 . The method of claim 23 , wherein the priority indicator indicates that the PRS priority is lower than at least one of: a periodic reference signal, an aperiodic reference signal, and a semi-persistent reference signal.
29 . The method of claim 23 , wherein the DL channel is one of a physical downlink shared channel (PDSCH) and a physical downlink control channel (PDCCH).