Non-uniform time domain resource allocation for radio frequency (RF) sensing in cellular systems
Disclosed are systems, apparatuses, processes, and computer-readable media for wireless communications. In one illustrative example, a network device can transmit, to a network entity, a capability report comprising a capability of the network device to support non-uniform time domain resource allocation of sensing reference signals (RSs). The network device can receive the sensing RSs for sensing one or more targets.
1 . A network device for wireless communications, the network device comprising:
at least one memory; and
at least one processor coupled to the at least one memory and configured to:
transmit, to a network entity, a capability report comprising a capability of the network device to support non-uniform time domain resource allocation of sensing reference signals (RSs), wherein the capability report further comprises a capability of the network device to support one or more non-uniform time domain patterns and a pattern identification (ID) for each of the one or more non-uniform time domain patterns; and
receive the sensing RSs for sensing one or more targets.
2 . The network device of claim 1 , wherein the network device is one of user equipment (UE) or a base station.
3 . The network device of claim 1 , wherein the network entity is a network server.
4 . The network device of claim 1 , wherein the capability report further comprises a capability of the network device to perform one or more algorithms for Doppler de-aliasing.
5 . The network device of claim 4 , wherein at least one of the one or more algorithms for Doppler de-aliasing is a compressed sensing (CS) algorithm.
6 . The network device of claim 1 , wherein the capability report further comprises a capability of the network device to support one or more types of non-uniform time domain patterns.
7 . The network device of claim 6 , wherein the one or more types of non-uniform time domain patterns comprise at least one of a coprime chirp pattern or a nested chirp pattern.
8 . A method for wireless communications at a network device, the method comprising:
transmitting, by the network device to a network entity, a capability report comprising a capability of the network device to support non-uniform time domain resource allocation of sensing reference signals (RSS), wherein the capability report further comprises a capability of the network device to support one or more non-uniform time domain patterns and a pattern identification (ID) for each of the one or more non-uniform time domain patterns; and
receiving, by the network device, the sensing RSs for sensing one or more targets.
9 . The method of claim 8 , wherein the network entity is a network server.
10 . The method of claim 8 , wherein the network device is one of user equipment (UE) or a base station.
11 . The method of claim 8 , wherein the capability report further comprises a capability of the network device to perform one or more algorithms for Doppler de-aliasing.
12 . The method of claim 11 , wherein at least one of the one or more algorithms for Doppler de-aliasing is a compressed sensing (CS) algorithm.
13 . The method of claim 8 , where in the capability report further comprises a capability of the network device to support one or more types of non-uniform time domain patterns.
14 . The method of claim 13 , wherein the one or more types of non-uniform time domain patterns comprise at least one of a coprime chirp pattern or a nested chirp pattern.
15 . A network device for wireless communications, the network device comprising:
at least one memory; and
at least one processor coupled to the at least one memory and configured to:
transmit, to a network entity, a capability report comprising a phase coherency capability of the network device; and
receive sensing reference signals (RSs) for sensing one or more targets, wherein there is a non-uniform time domain resource allocation of the sensing RSs, wherein the sensing RSs are configured within one or more coherence phase intervals (CPIs) and one or more phase tracking reference signals (PT-RSs) are configured between at least two of the one or more CPIs.
16 . The network device of claim 15 , wherein the phase coherency capability of the network device comprises a maximum coherent phase interval (CPI) that can be supported by the network device.
17 . The network device of claim 15 , wherein the at least one processor is configured to receive, from the network entity, at least one of a starting offset or a duration of each of the one or more CPIs.
18 . A method for wireless communications at a network device, the method comprising:
transmitting, by the network device to a network entity, a capability report comprising a phase coherency capability of the network device; and
receiving, by the network device, sensing reference signals (RSs) for sensing one or more targets, wherein there is a non-uniform time domain resource allocation of the sensing RSs, wherein the sensing RSs are configured within one or more coherence phase intervals (CPIs) and one or more phase tracking reference signals (PT-RSs) are configured between at least two of the one or more CPIs.
19 . The method of claim 18 , wherein the phase coherency capability of the network device comprises a maximum coherent phase interval (CPI) that can be supported by the network device.
20 . The method of claim 18 , further comprising receiving, by the network device from the network entity, at least one of a starting offset or a duration of each of the one or more CPIs.
21 . A network device for wireless communications, the network device comprising:
at least one memory; and
at least one processor coupled to the at least one memory and configured to:
receive sensing reference signals (RSs) for sensing one or more targets, wherein there is a non-uniform time domain resource allocation of the sensing RSs, wherein the sensing RSs are configured within one or more coherence phase intervals (CPIs) and one or more phase tracking reference signals (PT-RSs) are configured between at least two of the one or more CPIs; and
transmit, to a network entity, a Doppler covariance matrix based on the sensing RSs.
22 . A method for wireless communications at a network device, the method comprising:
receiving, by the network device, sensing reference signals (RSs) for sensing one or more targets, wherein there is a non-uniform time domain resource allocation of the sensing RSs, wherein the sensing RSs are configured within one or more coherence phase intervals (CPIs) and one or more phase tracking reference signals (PT-RSs) are configured between at least two of the one or more CPIs; and
transmitting, by the network device to a network entity, a Doppler covariance matrix based on the sensing RSs.