Global navigation satellite system (GNSS) position acquisition in connected mode
Wireless communication devices, systems, and methods related to global navigation satellite system (GNSS) position acquisition during connected mode, including associated protocols and signaling, are provided. For example, a method of wireless communication performed by a user equipment (UE) can include transmitting, to a non-terrestrial network unit, a capability indication, the capability indication indicating the UE is capable of performing a global navigation satellite system (GNSS) position acquisition during a connected mode connection; receiving, from the non-terrestrial network unit, an indication of whether the non-terrestrial network unit will support the UE performing the GNSS position acquisition during the connected mode connection; and performing, based at least in part on the receiving the indication, the GNSS position acquisition during the connected mode connection with the non-terrestrial network unit.
1 . A user equipment (UE), comprising:
at least one memory device;
at least one transceiver; and
at least one processor in communication with the at least one memory device and the at least one transceiver, the at least one memory device storing instructions which are executable by the at least one processor, individually or in any combination, to cause the UE to:
transmit, to a non-terrestrial network unit, a capability indication, the capability indication indicating the UE is capable of performing a global navigation satellite system (GNSS) position acquisition during a connected mode connection;
receive, via a system information broadcast message from the non-terrestrial network unit and prior to establishing the connected mode connection with the non-terrestrial network unit, an indication indicating the non-terrestrial network unit will support the UE performing the GNSS position acquisition during the connected mode connection; and
perform, based at least in part on the receiving the indication, the GNSS position acquisition during the connected mode connection with the non-terrestrial network unit.
2 . The UE of claim 1 , wherein the indication further indicates support of a time period associated with GNSS position recovery during the connected mode connection.
3 . The UE of claim 1 , wherein the UE performs the GNSS position acquisition to acquire an updated GNSS position.
4 . The UE of claim 3 , wherein the UE is further configured to:
initiate the GNSS position acquisition based on an expiration of an initial GNSS validity associated with the connected mode connection.
5 . The UE of claim 3 , wherein the UE is further configured to:
receiver, from the non-terrestrial network unit, an indication of a length of a GNSS position recovery timer.
6 . The UE of claim 5 , wherein the length of the GNSS position recovery timer is based at least in part on the capability indication.
7 . The UE of claim 5 , wherein the UE is further configured to:
in response to failing to successfully acquire GNSS positioning before expiration of the GNSS position recovery timer, perform at least one of:
transitioning to an idle mode; or
declaring a radio link failure.
8 . The UE of claim 3 , wherein the UE is further configured to:
receive, from the non-terrestrial network unit, an indication of a GNSS position acquisition gap; and
wherein the UE is configured to perform the GNSS position acquisition in part by:
initiating the GNSS position acquisition in response to failing to successfully acquire GNSS positioning during the GNSS position acquisition gap.
9 . The UE of claim 1 , wherein:
the capability indication includes an indication of a GNSS position acquisition time associated with the UE.
10 . A user equipment (UE), comprising:
at least one memory device;
at least one transceiver; and
at least one processor in communication with the at least one memory device and the at least one transceiver, the at least one memory device storing instructions which are executable by the at least one processor, individually or in any combination, to cause the UE to:
establish a connected mode connection with a non-terrestrial network unit;
receive, via a system information broadcast message from the non-terrestrial network unit and prior to establishing the connected mode connection with the non-terrestrial network unit, an indication of a global navigation satellite system (GNSS) position acquisition gap, the indication also indicating the non-terrestrial network unit will support the UE performing a GNSS position acquisition during the connected mode connection; and
perform, during the connected mode connection with the non-terrestrial network unit, the GNSS position acquisition during the GNSS position acquisition gap.
11 . The UE of claim 10 , wherein the indication of the GNSS position acquisition gap comprises an indication of a reference time duration and an allowable offset relative to the reference time duration.
12 . The UE of claim 10 , wherein the UE is further configured to:
in response to failing to successfully acquire GNSS positioning during the GNSS position acquisition gap, operate in an idle mode.
13 . The UE of claim 10 , wherein the UE is further configured to:
in response to failing to successfully acquire GNSS positioning during the GNSS position acquisition gap, declare a radio link failure.
14 . The UE of claim 10 , wherein the UE is further configured to:
in response to failing to successfully acquire GNSS positioning during the GNSS position acquisition gap, initiate a second GNSS position acquisition.
15 . The UE of claim 14 , further comprising:
receiving, from the non-terrestrial network unit, an indication of a length of a GNSS position recovery timer; and
wherein the second GNSS position acquisition is based on the length of the GNSS position recovery timer.
16 . A method of wireless communication performed by a user equipment (UE), the method comprising:
transmitting, to a non-terrestrial network unit, a capability indication, the capability indication indicating the UE is capable of performing a global navigation satellite system (GNSS) position acquisition during a connected mode connection;
receiving, via a system information broadcast message from the non-terrestrial network unit and prior to establishing the connected mode connection with the non-terrestrial network unit, an indication indicating the non-terrestrial network unit will support the UE performing the GNSS position acquisition during the connected mode connection; and
performing, based at least in part on the receiving the indication, the GNSS position acquisition during the connected mode connection with the non-terrestrial network unit.
17 . The method of claim 16 , wherein the receiving the indication indicating the non-terrestrial network unit will support the UE performing the GNSS position acquisition during the connected mode connection comprises:
receiving the indication indicating support of a time period associated with GNSS position recovery during the connected mode connection.
18 . The method of claim 16 , wherein the performing the GNSS position acquisition comprises:
acquiring an updated GNSS position.
19 . The method of claim 16 , wherein the performing the GNSS position acquisition comprises:
initiating the GNSS position acquisition based on an expiration of an initial GNSS validity associated with the connected mode connection.
20 . The method of claim 16 , further comprising:
receiving, from the non-terrestrial network unit, an indication of a length of a GNSS position recovery timer.
21 . The method of claim 20 , further comprising:
in response to failing to successfully acquire GNSS positioning before expiration of the GNSS position recovery timer, performing at least one of:
transitioning to an idle mode; or
declaring a radio link failure.
22 . The method of claim 16 , further comprising:
receiving, from the non-terrestrial network unit, an indication of a GNSS position acquisition gap; and
wherein the performing the GNSS position acquisition comprises:
initiating the GNSS position acquisition in response to failing to successfully acquire GNSS positioning during the GNSS position acquisition gap.