公开(公告)号：US20140099952A1

公开(公告)日：2014-04-10

申请号：US14047673

申请日：2013-10-07

Applicant: QUALCOMM INCORPORATED

Inventor： Abhishek BHATNAGAR ,  Shyamal RAMACHANDRAN ,  Vitaly DRAPKIN ,  Vamsi Krishna DOKKU ,  Hariharan SUKUMAR ,  Zhong REN ,  Vidula Rajeev KURUNDKAR

IPC: H04W60/00

Abstract: Methods and apparatus are provided for avoiding attempts by a UE to attach to a RAT network when that RAT network is unavailable. According to certain aspects, the UE may detect scenarios when the RAT network is unavailable and take preemptive action to prevent the UE from attempting to acquire service on that RAT. For example, the UE may effectively remove that RAT from a list of supported RATs by sending a UE capability message indicating that RAT is not supported, which may prevent network-initiated transitions of the UE to that RAT. The UE may also remove the unavailable RAT from an internal list of supported RATs, which may prevent UE-initiated transitions to that RAT.

Abstract translation: 提供了方法和装置，以避免当该RAT网络不可用时，UE尝试附着到RAT网络。 根据某些方面，当RAT网络不可用时，UE可以检测情况，并且采取抢先行动来防止UE尝试在该RAT上获取服务。 例如，UE可以通过发送指示不支持RAT的UE能力消息来有效地从支持的RAT的列表中移除该RAT，这可能阻止UE发起到该RAT的网络发起的转换。 UE还可以从支持的RAT的内部列表中去除不可用的RAT，这可以防止UE发起到该RAT的转换。

公开(公告)号：US20200260504A1

公开(公告)日：2020-08-13

申请号：US16781535

申请日：2020-02-04

Applicant: QUALCOMM Incorporated

Inventor： Min WANG ,  Xipeng ZHU ,  Masato KITAZOE ,  Lenaig Genevieve CHAPONNIERE ,  Zhong REN ,  Xinli SONG ,  Tom CHIN ,  Osama LOTFALLAH

IPC: H04W76/10 ,  H04W36/00 ,  H04W48/02

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify that a radio resource control connection is to be established for evolved packet system fallback or inter radio access technology fallback from New Radio for a voice call. The UE may determine that an establishment cause received from a network access stratum (NAS) layer does not indicate high priority access. The UE may override the establishment cause such that the establishment cause indicates a mobile originated (MO) voice call based at least in part on determining that the establishment cause received from the NAS layer does not indicate high priority access. The UE may perform an access barring check of an MO voice call based at least in part on overriding the establishment cause such that the establishment cause indicates an MO voice call. Numerous other aspects are provided.