Assisted radar congestion mitigation
Embodiments include methods for managing operation of a first radar system executed by a processor of a first user equipment (UE) of a first vehicle having the first radar system. In various embodiments, a processor of a first UE of the first vehicle may receive at the first UE from a base station, a wireless communication control message including radar transmission configuration information or radar reception interference information regarding the radar signals from a second radar system of a second vehicle having a second UE. Some embodiments may use the radar transmission configuration information or radar reception interference information received from the base station to manage operation of the first radar system.
1 . A method executed by a processor of a first user equipment (UE) of a first vehicle having a first radar system, comprising:
receiving, at the first UE from a base station, a wireless communication control message including radar transmission configuration information or radar reception interference information regarding radar signals from a second radar system of a second vehicle having a second UE, wherein the wireless communication control message comprises one of a radio resource control (RRC) message, a medium access control-control element (MAC-CE), a downlink control information (DCI), or a sidelink control information (SCI),
wherein the DCI or the SCI is carried by one of a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical sidelink control channel (PSCCH), or a physical sidelink shared channel (PSSCH); and
using the radar transmission configuration information or the radar reception interference information received from the base station to manage operation of the first radar system.
2 . The method of claim 1 , wherein the wireless communication control message includes the radar transmission configuration information comprising:
a modified radar transmission configuration for use in operating the first radar system to avoid interference with the radar signals from the second radar system of the second vehicle.
3 . The method of claim 1 , wherein the wireless communication control message includes the radar transmission configuration information for use in operating the first radar system including at least one of:
time or frequency resource;
waveform, duty-cycle, or starting-point;
transmission power;
space, time, or frequency pre-coding information; or
beam sweeping pattern.
4 . The method of claim 1 , wherein the wireless communication control message includes an indication that the first vehicle should immediately terminate radar transmissions.
5 . The method of claim 1 , wherein the wireless communication control message is one of the DCI or the SCI that includes the radar transmission configuration information for use in managing radar transmissions by the first radar system comprising multiple radar components, in which the multiple radar components are:
mounted on different locations of the second vehicle of a radar component;
transmitting with different polarization types;
transmitting different waveforms used for radar transmissions by the radar component of the second radar system; or
transmitting at different transmit power levels.
6 . The method of claim 5 , wherein the wireless communication control message is communicated by multiple sets of RRC-configurations or MAC-CE messages or the DCI or the SCI including at least one of:
different sets of DCI or SCI are distinguished with formats including different synchronization signals (SS), radio network temporary identifiers, or other control information formats, wherein each of the formats corresponds to different radar components of the second radar system;
different sets of DCI or SCI are carried by a different one of a PDCCH, a PDSCH, a PSCCH, or a PSSCH; or
different sets of DCI or SCI specify semi-persistent radar signal transmission parameters for the first radar system of the first vehicle to use until a next set of DCI or SCI is received.
7 . The method of claim 6 , where the multiple sets of RRC-configurations or MAC-CE messages or the DCI or the SCI are respectively associated with different radar components that are at least one of:
mounted on different locations of the second vehicle of a radar component;
transmitting with different polarization types;
transmitting different waveforms used for radar transmissions by the radar component of the second radar system; or
transmitting at different transmit power levels.
8 . The method of claim 1 , wherein the wireless communication control message is one of the DCI or the SCI that includes the radar reception interference information for use in processing signals received by the first radar system corresponding to more than one radar component of the second radar system comprising at least one of:
different mounting locations on the second vehicle of a radar component of the second radar system;
different polarization types of the radar component of the second radar system;
different waveforms used for radar transmissions by the radar component of the second radar system; or
different supported levels of maximum transmission power of the radar component of the second radar system.
9 . The method of claim 8 , wherein the wireless communication control message is communicated by multiple sets of DCI or SCI including at least one of:
different sets of DCI or SCI are distinguished with formats including different synchronization signals (SS), radio network temporary identifiers, or other control information formats, wherein each of the formats corresponds to different radar components of the second radar system;
different sets of DCI or SCI are carried by a different one of a PDCCH, a PDSCH, a physical PSCCH, or a PSSCH; or
different sets of DCI or SCI specify semi-persistent radar signal transmission parameters for the first radar system of the first vehicle to use until a next set of DCI or SCI is received.
10 . The method of claim 1 , wherein:
the wireless communication control message is one of the DCI or the SCI; and
using the radar transmission configuration information or the radar reception interference information received from the base station to manage operation of the first radar system comprises suspending radar transmissions in response to not receiving the DCI or the SCI until a next DCI or SCI is received.
11 . The method of claim 1 , wherein the wireless communication control message includes the radar transmission configuration information that is part of a group common downlink control information (GC-DCI) to a group of UEs in a group of vehicles that includes the first UE, wherein a field within the GC-DCI corresponds to a particular UE within the group of UEs and identifies radar signal transmission parameters to use for managing a radar system of a corresponding vehicle within the group of vehicles.
12 . The method of claim 11 , wherein the GC-DCI includes a common field that identifies radar signal transmission parameters to use for managing all radar systems in the group of vehicles.
13 . The method of claim 1 , wherein the wireless communication control message includes the radar reception interference information comprising:
radar reception parameters configured to enable a radar coupled to the first UE to mitigate radar reception interference from the radar signals from the second radar system of the second vehicle, including at least one of a location of the second vehicle or radar signal parameters of the second radar system.
14 . A user equipment (UE) configured for use in a first vehicle equipped with a first radar system, comprising:
a wireless transceiver; and
one or more processors coupled to the wireless transceiver and configured with processor-executable instructions to:
receive, from a base station, a wireless communication control message including radar transmission configuration information or radar reception interference information regarding radar signals from a second radar system of a second vehicle, wherein the wireless communication control message comprises one of a radio resource control (RRC) message, a medium access control-control element (MAC-CE), a downlink control information (DCI), or a sidelink control information (SCI),
wherein the DCI or the SCI is carried by one of a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical sidelink control channel (PSCCH), or a physical sidelink shared channel (PSSCH); and
use the radar transmission configuration information or radar reception interference information received from the base station to manage operation of the first radar system.
15 . The UE of claim 14 , wherein the wireless communication control message includes the radar transmission configuration information comprising:
a modified radar transmission configuration for use in operating the first radar system to avoid interference with the radar signals from the second radar system of the second vehicle.
16 . The UE of claim 14 , wherein the wireless communication control message includes the radar transmission configuration information for use in operating the first radar system including at least one of: time or frequency resource; waveform, duty-cycle, or starting-point; transmission power; space, time, or frequency pre-coding information; or beam sweeping pattern.
17 . The UE of claim 14 , wherein the wireless communication control message includes an indication that the first vehicle should immediately terminate radar transmissions.
18 . The UE of claim 14 , wherein the wireless communication control message is one of the DCI or the SCI that includes the radar transmission configuration information for use in managing radar transmissions by the first radar system comprising multiple radar components, in which the multiple radar components are:
mounted on different locations of the second vehicle of a radar component;
associated with different polarization types;
associated with different waveforms used for radar transmissions by the radar component of the second radar system; or
associated with different transmit power levels.
19 . The UE of claim 18 , wherein the wireless communication control message is associated with multiple sets of RRC-configurations or MAC-CE messages or the DCI or the SCI including at least one of:
different sets of DCI or SCI are distinguished with formats including different synchronization signals (SS), radio network temporary identifiers, or other control information formats, wherein each of the formats corresponds to different radar components of the second radar system;
different sets of DCI or SCI are carried by a different one of a PDCCH, a PDSCH, a PSCCH, or a PSSCH; or
different sets of DCI or SCI specify semi-persistent radar signal transmission parameters for the first radar system of the first vehicle to use until a next set of DCI or SCI is received.
20 . The UE of claim 19 , where the multiple sets of RRC-configurations or MAC-CE messages or the DCI or the SCI are respectively associated with different radar components that are at least one of:
mounted on different locations of the second vehicle of a radar component;
associated with different polarization types;
associated with different waveforms used for radar transmissions by the radar component of the second radar system; or
associated with different transmit power levels.
21 . The UE of claim 14 , wherein the wireless communication control message is one of the DCI or the SCI that includes radar reception interference information for use in processing signals received by the first radar system corresponding to more than one radar component of the second radar system comprising at least one of:
different mounting locations on the second vehicle of a radar component of the second radar system;
different polarization types of the radar component of the second radar system;
different waveforms for radar transmissions by the radar component of the second radar system; or
different supported levels of maximum transmission power of the radar component of the second radar system.
22 . The UE of claim 21 , wherein the wireless communication control message is associated with multiple sets of the DCI or the SCI including at least one of:
different sets of DCI or SCI are distinguished with formats including different synchronization signals (SS), radio network temporary identifiers, or other control information formats, wherein each of the formats corresponds to different radar components of the second radar system;
different sets of DCI or SCI are associated with a different one of a PDCCH, a PDSCH, a PSCCH, or a PSSCH; or
different sets of DCI or SCI specify semi-persistent radar signal transmission parameters for the first radar system of the first vehicle to use until a next set of DCI or SCI is received.
23 . The UE of claim 14 , wherein:
the wireless communication control message is one of the DCI or the SCI; and
the one or more processors are configured with processor-executable instructions such that using the radar transmission configuration information or radar reception interference information to manage operation of the first radar system comprises suspending radar transmissions in response to not receiving the DCI or the SCI until a next DCI or SCI is received.
24 . The UE of claim 14 , wherein the wireless communication control message includes the radar transmission configuration information that is part of a group common downlink control information (GC-DCI) to a group of UEs in a group of vehicles that includes the UE, wherein a field within the GC-DCI corresponds to a particular UE within the group of UEs and identifies radar signal transmission parameters to use for managing a radar system of a corresponding vehicle within the group of vehicles.
25 . The UE of claim 24 , wherein the GC-DCI includes a common field that identifies radar signal transmission parameters to use for managing all radar systems in the group of vehicles.
26 . The UE of claim 14 , wherein the wireless communication control message includes radar reception interference information comprising:
radar reception parameters configured to enable a radar coupled to the UE to mitigate radar reception interference from radar signals from the second radar system of the second vehicle, including at least one of a location of the second vehicle or radar signal parameters of the second radar system.