Qualcomm Incorporated

Haojun Wang

Zhenqing Cui

Jian Li

Yi Liu

Fojian Zhang

Yuankun Zhu

Chaofeng Hui

Hao Zhang

Tianya Lin

Shuang Wang

Guojing Liu

Kaikai Yang

Bing Leng

Jie Ren

Hong Wei

Jinglin Zhang

Certain aspects of the present disclosure provide a technique for wireless communications by a user equipment (UE). The UE starts a procedure for a mobile terminated (MT) or mobile originated (MO) call in a first radio access technology (RAT) network. The UE receives a first command for the UE to move to a second RAT network to continue the call, and in response establishes a connection with the second RAT network to continue the call. The UE starts a timer based on an end of the call and take one or more actions dependent at least in part on the timer to prioritize return to the first RAT network in a standalone (SA) mode.

UE optimization in EPS fallback fast return procedure

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine that a signal-to-noise ratio (SNR) of one or more communications from a serving cell satisfies an SNR threshold after establishing a New Radio radio resource control (RRC) connection with the serving cell. The UE may transmit a measurement message to the cell based at least in part, on the determining that the SNR of the one or more communications from the serving cell satisfies the SNR threshold. The UE may receive, from the serving cell, a list of one or more neighbor cells based at least in part on the transmitting the measurement message, and establish an RRC connection to a neighbor cell on the list based at least in part on determining that a radio link failure occurred. Numerous other aspects are provided.

Recovery from radio link failure

Embodiments include systems and methods for supporting registration in a fifth generation (5G) new radio (NR) (5GNR) standalone (SA) network by a processor of a multi-subscriber identity module (SIM) wireless device configured with a first subscription and a second subscription. Various embodiments may include determining whether the first subscription received a shared mobile country code (MCC) from the second subscription and the shared MCC is different than an MCC of a home public land mobile network (HPLMN) of the first subscription in response to preforming a full band scan of frequencies supporting the first subscription, and stopping the full band scan by the first subscription and scanning a 5GNR band associated with the shared MCC in response to determining that the first subscription received the shared MCC from the second subscription and the shared MCC is different than the MCC of the HPLMN of the first subscription.

Method to speed up 5GNR SA network register for dual-sim device during roaming

A user equipment (UE) may determine that a condition associated with a first radio access technology (RAT) is satisfied. The UE may select a cell, from a list of anchor cells associated with a second RAT and configured for dual-connectivity, for a connection based at least in part on the determination that the condition associated with the first RAT is satisfied. The UE may establish the connection with the selected cell. Numerous other aspects are provided.

Techniques for cell selection for dual-connectivity

One or more aspects of uplink transmissions for dual connectivity connection devices are disclosed. In some implementations, a method of wireless communication includes adjusting, by a user equipment (UE) while in a dual connectivity configuration, a threshold. The method also includes routing, by the UE, data to one of multiple radio link control (RLC) layers based on the adjusted threshold. The method further includes transmitting, by the UE, the data.

UL transmission method for ENDC dual connection device

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Xi'an, China

Haojun Wang