Positioning and network energy savings
Disclosed are techniques for wireless communication. In an aspect, a network node transmits, to a network entity, at least one configuration indicating one or more time occasions during which the network node will refrain from transmission of downlink transmissions, reception of uplink transmissions, or both, and refrains from transmission of downlink positioning reference signals (DL-PRS), reception of uplink positioning reference signals (UL-PRS), or both based on the one or more time occasions.
1 . A network node, comprising:
one or more memories;
one or more transceivers; and
one or more processors coupled to the one or more memories and the one or more transceivers, the one or more processors configured to:
transmit, via the one or more transceivers, to a network entity, at least one configuration indicating one or more time occasions during which the network node will refrain from transmission of downlink transmissions, reception of uplink transmissions, or both;
refrain from transmission of downlink positioning reference signals (DL-PRS), reception of uplink positioning reference signals (UL-PRS), or both based on the one or more time occasions; and
receive, via the one or more transceivers, from the network entity, a request to provide one or more DL-PRS muting configurations to the network entity, wherein the at least one configuration is one of the one or more DL-PRS muting configurations, and wherein the at least one configuration is transmitted to the network entity in response to the request.
2 . The network node of claim 1 , wherein the at least one configuration further indicates that the network node will refrain from the transmission of DL-PRS, the reception of UL-PRS, or both based on the one or more time occasions.
3 . The network node of claim 1 , wherein the one or more processors configured to refrain from the transmission of DL-PRS, the reception of UL-PRS, or both comprises the one or more processors configured to:
refrain from the transmission of DL-PRS, the reception of UL-PRS, or both for DL-PRS transmissions, UL-PRS receptions, or both that at least partially overlap with a time occasion of the one or more time occasions; or
refrain from the transmission of DL-PRS, the reception of UL-PRS, or both for only DL-PRS transmissions, UL-PRS receptions, or both that fully overlap with a time occasion of the one or more time occasions.
4 . The network node of claim 1 , wherein:
the at least one configuration comprises a plurality of DL-PRS muting configurations, each of the plurality of DL-PRS muting configurations indicating a set of time occasions during which the network node will refrain from the transmission of DL-PRS.
5 . The network node of claim 4 , wherein the one or more processors are further configured to:
transmit, via the one or more transceivers, to a user equipment (UE) served by the network node, after transmission of the plurality of DL-PRS muting configurations, an activation of the at least one configuration, a deactivation of the at least one configuration, a switch from a previous DL-PRS muting configuration of the plurality of DL-PRS muting configurations to the at least one configuration, or a change to one or more parameters of the at least one configuration.
6 . The network node of claim 5 , wherein the activation of the at least one configuration, the deactivation of the at least one configuration, the switch from the previous DL-PRS muting configuration to the at least one configuration, or the change to the one or more parameters of the at least one configuration is transmitted to the UE via:
downlink control information (DCI),
medium access control control element (MAC-CE) signaling, or
radio resource control (RRC) signaling.
7 . The network node of claim 1 , wherein the one or more processors are further configured to:
transmit, via the one or more transceivers, to a user equipment (UE) served by the network node, an activation of a DL-PRS muting configuration of a neighboring network node of the UE, a deactivation of the DL-PRS muting configuration of the neighboring network node, a switch from a previous DL-PRS muting configuration of the neighboring network node to the DL-PRS muting configuration, or a change to one or more parameters of the DL-PRS muting configuration of the neighboring network node.
8 . The network node of claim 1 , wherein the request includes recommended parameters for the one or more DL-PRS muting configurations.
9 . The network node of claim 1 , wherein the one or more processors are further configured to:
transmit, via the one or more transceivers, to the network entity, an indication that the network node will refrain from the transmission of DL-PRS, the reception of UL-PRS, or both.
10 . The network node of claim 9 , wherein the one or more processors are further configured to:
receive, via the one or more transceivers, from the network entity, an indication to implement the at least one configuration of the one or more DL-PRS muting configurations.
11 . The network node of claim 1 , wherein the one or more processors configured to refrain from the transmission of DL-PRS, the reception of UL-PRS, or both comprises the one or more processors configured to:
transmit, via the one or more transceivers, DL-PRS on a reduced set of resources compared to normal DL-PRS transmission.
12 . The network node of claim 11 , wherein the reduced set of resources comprises:
a reduced transmit power,
a reduced number of spatial elements,
a different beam shape or radiation pattern,
a reduced bandwidth of the DL-PRS,
an increased comb size of the DL-PRS,
a longer periodicity of the DL-PRS,
a reduced repetition factor of the DL-PRS,
a reduced number of symbols per occasion of the DL-PRS,
reduced quasi-colocation (QCL) information,
a reduced number of positioning frequency layers of the DL-PRS, or
any combination thereof.
13 . The network node of claim 11 , wherein the one or more processors are further configured to:
transmit, via the one or more transceivers, to the network entity, an indication of the reduced set of resources.
14 . The network node of claim 1 , wherein the at least one configuration comprises:
a discontinuous transmission (DTX) configuration,
a discontinuous reception (DRX) configuration, or
a DL-PRS muting configuration.
15 . A location server, comprising:
one or more memories;
one or more transceivers; and
one or more processors coupled to the one or more memories and the one or more transceivers, the one or more processors configured to:
receive, via the one or more transceivers, from a network node, at least one configuration indicating one or more time occasions during which the network node will refrain from transmission of downlink transmissions, reception of uplink transmissions, or both;
receive, via the one or more transceivers, from the network node, an indication that the network node will refrain from transmission of downlink positioning reference signals (DL-PRS), reception of uplink positioning reference signals (UL-PRS), or both based on the one or more time occasions; and
transmit, via the one or more transceivers, to the network node, a request to provide the at least one configuration to the location server, wherein the at least one configuration is received in response to the request.
16 . The location server of claim 15 , wherein the one or more processors are further configured to:
transmit, via the one or more transceivers, to a user equipment (UE), the at least one configuration; and
transmit, via the one or more transceivers, to the UE, the indication that the network node will refrain from the transmission of DL-PRS, the reception of UL-PRS, or both based on the one or more time occasions.
17 . The location server of claim 16 , wherein:
the at least one configuration comprises a plurality of DL-PRS muting configurations, each of the plurality of DL-PRS muting configurations indicating a set of time occasions during which the network node will refrain from the transmission of DL-PRS.
18 . The location server of claim 17 , wherein the one or more processors are further configured to:
transmit, via the one or more transceivers, to the network node, an indication to implement the at least one configuration of the plurality of DL-PRS muting configurations.
19 . The location server of claim 15 , wherein the request includes recommended parameters for the at least one configuration.
20 . The location server of claim 15 , wherein the one or more processors configured to receive the indication that the network node will refrain from the transmission of DL-PRS, the reception of UL-PRS, or both comprises the one or more processors configured to:
receive, via the one or more transceivers, an indication that the network node will transmit DL-PRS on a reduced set of resources compared to normal DL-PRS transmission.
21 . The location server of claim 20 , wherein the reduced set of resources comprises:
a reduced transmit power,
a reduced number of spatial elements,
a different beam shape or radiation pattern,
a reduced bandwidth of the DL-PRS,
an increased comb size of the DL-PRS,
a longer periodicity of the DL-PRS,
a reduced repetition factor of the DL-PRS,
a reduced number of symbols per occasion of the DL-PRS,
reduced quasi-colocation (QCL) information,
a reduced number of positioning frequency layers of the DL-PRS, or
any combination thereof.
22 . The location server of claim 15 , wherein the at least one configuration comprises:
a discontinuous transmission (DTX) configuration,
a discontinuous reception (DRX) configuration, or
a DL-PRS muting configuration.
23 . A method of wireless communication performed by a network node, comprising:
transmitting, to a network entity, at least one configuration indicating one or more time occasions during which the network node will refrain from transmission of downlink transmissions, reception of uplink transmissions, or both;
refraining from transmission of downlink positioning reference signals (DL-PRS), reception of uplink positioning reference signals (UL-PRS), or both based on the one or more time occasions; and
receiving, from the network entity, a request to provide one or more DL-PRS muting configurations to the network entity, wherein the at least one configuration is one of the one or more DL-PRS muting configurations, and wherein the at least one configuration is transmitted to the network entity in response to the request.