US 2022/0046738 A1 · TECHNIQUES FOR TRIGGERING RADIO ACCESS TECHNOLOGY (RAT) FALL BACK AT A USER EQUIPMENT (UE) BASED ON DATA TRAFFIC INFORMATION

Abstract

Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may support multiple radio access technologies (RATs). The UE may communicate using both a Long Term Evolution (LTE) connection for control signaling and a New Radio (NR) connection for data signaling in a non-standalone (NSA) mode. However, if the UE uses a data rate below a threshold, the NR connection may be inefficient. To reduce processing overhead, the UE may fall back to using the LTE connection for data communications. For example, the UE may delay or abort adding an NR connection based on the data rate. In some examples, the UE may transmit a fake report or a fake uplink message to trigger dropping an NR connection. Additionally or alternatively, the UE may indicate a preferred mode of operation to the network indicating a preference for communicating data via an LTE connection.

Claims30

Dependent claims

A method for wireless communications at a user equipment (UE), comprising:

establishing a first connection with a first cell using a first radio access technology (RAT);
receiving a request message to add a second connection with a second cell using a second RAT different from the first RAT;
determining to perform data transfer via the first connection using the first RAT based at least in part on data traffic information for the UE;
and
delaying establishing the second connection with the second cell using the second RAT for at least a time duration based at least in part on determining to perform the data transfer via the first connection using the first RAT.

2 more elements

A method for wireless communications at a user equipment (UE), comprising:

establishing, with a network, a first connection with a first cell using a first radio access technology (RAT) and a second connection with a second cell using a second RAT different from the first RAT;
performing data transfer via the second connection using the second RAT;
determining to fall back to perform the data transfer via the first connection using the first RAT based at least in part on data traffic information for the UE;
measuring a value for reporting to the network;
modifying the measured value based at least in part on determining to fall back to performing the data transfer via the first connection using the first RAT;
and
transmitting, to the network, a measurement report indicating the modified measured value.

4 more elements

A method for wireless communications at a user equipment (UE), comprising:

establishing, with a network, a first connection with a first cell using a first radio access technology (RAT) and a second connection with a second cell using a second RAT different from the first RAT;
performing data transfer via the second connection using the second RAT;
determining to fall back to perform the data transfer via the first connection using the first RAT based at least in part on data traffic information for the UE;
identifying information for transmission to the network;
modifying the information based at least in part on determining to fall back to performing the data transfer via the first connection using the first RAT;
and
transmitting, to the network, a message comprising the modified information.

4 more elements

Dependencies are inferred from the claim text.

Techniques for triggering radio access technology (rat) fall back at a user equipment (ue) based on data traffic information

Life of this patent

Techniques for triggering radio access technology (rat) fall back at a user equipment (ue) based on data traffic information

Life of this patent

Abstract

Claims30