US-12621899-B2 - Methods and systems for transitioning a user equipment to an inactive state

Abstract

Wireless communications systems and methods related to transition of a user equipment (UE) to an inactive state are provided. In some aspects, a multi-subscriber identity module (MSIM) UE may request a network to transition one subscription or SIM to an inactive state when another subscription or SIM has a higher priority. In some aspects, a UE may request for the UE to be transitioned to an inactive state based on the signal quality of network signals at the location of the UE. In some aspects, a UE may request a network to transition the network to an inactive state when downlink data transmission from the network to the UE has stalled.

Inventors

• Bapineedu Chowdary GUMMADI
• Santosh Kumar KANCHERLA
• Kishore Danta

Assignees

• QUALCOMM INCORPORATED

Dates

Publication Date

20260505

Application Date

20240426

Claims (20)

1. 1 . A method of wireless communication performed by a user equipment (UE), the method comprising: performing a first estimation of a quality of signal coverage of a network at a location of the UE that is in a connected state with the network; and determining whether to transmit, prior to the UE experiencing a radio link failure (RLF), a request to the network based on the first estimation, the request configured to request a transition of the UE from the connected state to an inactive state with the network.
2. 2 . The method of claim 1 , wherein the first estimation indicates that the quality of signal coverage of the network is in a range that triggers the RLF.
3. 3 . The method of claim 1 , further comprising: performing a second estimation of the quality of signal coverage of the network at the location of the UE after the UE is transitioned from the connected state to the inactive state by the network; and resuming the connected state when the second estimation indicates that the quality of signal coverage of the network improves so as not to trigger the RLF.
4. 4 . The method of claim 1 , further comprising: determining a type of an application executing on the UE and communicating with the network via the connected state of the UE with the network; and determining to transmit the request when the type of the application is a non-time critical application.
5. 5 . The method of claim 1 , wherein the first estimation is performed using a location-based communication module of the UE.
6. 6 . The method of claim 5 , wherein the location-based communication module includes a global positioning system (GPS) module or a Wi-Fi® module.
7. 7 . The method of claim 1 , wherein the first estimation is based on a mobility of the UE.
8. 8 . The method of claim 1 , wherein the first estimation is based on a block error rate (BLER) measurement of a communication of the UE with the network during the connected state.
9. 9 . The method of claim 1 , wherein the network includes a long-term evolution (LTE) network or a new radio (NR) network.
10. 10 . The method of claim 1 , wherein the request includes a mobile initiated connection only (MICO) information element indicating to the network that the UE is entering MICO mode when the UE is transitioned to the inactive state.
11. 11 . The method of claim 1 , further comprising: receiving from the network, in response to transmitting the request, a radio resource control (RRC) release message configured to transition the UE from the connected state to the inactive state.
12. 12 . A user equipment (UE), comprising: a processor configured to: perform a first estimation of a quality of signal coverage of a network at a location of the UE that is in a connected state with the network; and determine whether to transmit, prior to the UE experiencing a radio link failure (RLF), a request to the network based on the first estimation, the request configured to request a transition of the UE from the connected state to an inactive state with the network.
13. 13 . The UE of claim 12 , wherein the first estimation indicates that the quality of signal coverage of the network is in a range that triggers the RLF.
14. 14 . The UE of claim 12 , wherein the first estimation is performed using a location-based communication module of the UE.
15. 15 . The UE of claim 14 , wherein the location-based communication module includes a global positioning system (GPS) module or a Wi-Fi® module.
16. 16 . The UE of claim 12 , wherein the first estimation is based on a mobility of the UE.
17. 17 . The UE of claim 12 , wherein the first estimation is based on a block error rate (BLER) measurement of a communication of the UE with the network during the connected state.
18. 18 . The UE of claim 12 , wherein the request includes a mobile initiated connection only (MICO) information element indicating to the network that the UE is entering MICO mode when the UE is transitioned to the inactive state.
19. 19 . A method of wireless communication performed by a multi-subscriber identity module user equipment (multi-SIM UE), the method comprising: establishing a first connection with a first base station associated with a first SIM of the multi-SIM UE; and determining whether to transmit, prior to the multi-SIM UE experiencing a radio link failure (RLF), a UE Assistance Information requesting a transition of the multi-SIM UE from a connected state to an inactive state; and transmitting the UE Assistance Information to the first base station, wherein the UE Assistance Information indicates the request is associated with a multi-SIM operation and the multi-SIM operation is associated with a second connection with a second base station associated with a second SIM of the multi-SIM UE.
20. 20 . The method of claim 19 , wherein the second connection has a higher priority over the first connection.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application is a divisional application of U.S. patent application Ser. No. 17/156,473, filed Jan. 22, 2021, the entirety of which is incorporated by reference herein. FIELD OF THE DISCLOSURE This application relates to wireless communication systems, and more particularly to the transitioning of a user equipment (UE) between a connected state and an inactive state based on UE subscription priority, network signal quality and network data stall. INTRODUCTION Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, and/or the like). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency-division multiple access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems, single-carrier frequency-division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP). A wireless network may include a number of base stations (BSs) that can support communication for a number of user equipment (UEs). A user equipment (UE) may communicate with a base station (BS) via the downlink and uplink. The downlink (or forward link) refers to the communication link from the BS to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, a gNB, an access point (AP), a radio head, a transmit receive point (TRP), a New Radio (NR) BS, a 5G Node B, and/or the like. The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate on a municipal, national, regional, and even global level. New Radio (NR), which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL), using CP-OFDM and/or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. BRIEF SUMMARY OF SOME EXAMPLES In some aspects, a method of wireless communication performed by a multi-subscriber identity module (MSIM) user equipment (UE) includes determining a first subscription of the MSIM UE is in a first connected state with a first network and a second subscription of the MSIM UE is in a second connected state with a second network. In some aspects, the UE may further transmit, to the network, a request configured to request a transition of the first subscription from the first connected state to an inactive state with the first network when a connection of the second connected state has a higher priority than a connection of the first connected state. In some aspects, a method of wireless communication performed by a UE includes performing a first estimation of a quality of signal coverage of a network at a location of the UE that is in a connected state with the network. Further, the UE may determine whether to transmit a request to the network based on the first estimation, the request configured to request a transition of the UE from the connected state to an inactive state with the network. In some aspects, a method of wireless communication performed by a UE includes determining downlink data transmission to the UE from a network to which the UE is in a connected state has stalled. In some aspects, the UE may transmit, to the network, a request configured to request a transition of the UE from the connected state to an inactive state with the network. In some aspects, a user equipment (UE) comprises a processor and a transceiver. In some instances, the processor may be configured to determine a first subscription of the MSIM UE is in a first connected state with a first network and a second subscrip