公开(公告)号：US20180092135A1

公开(公告)日：2018-03-29

申请号：US15279463

申请日：2016-09-29

Applicant: Intel IP Corporation

Inventor： Deepak DASH ,  Nitin KUPPELUR

IPC: H04W76/00 ,  H04W76/02 ,  H04W4/22

CPC classification number: H04W76/50 ,  H04W4/90 ,  H04W76/10 ,  H04W76/18 ,  H04W80/04 ,  H04W84/00

Abstract: Delay in IMS call establishment and other time critical data transfers may be reduced by seeking alternative transmission methods for time critical data, when a transmission cannot be completed or the Radio Access Technology is otherwise unavailable. A Critical Service Manager (“CSM”) receives and evaluates priority information about a given data transfer. By evaluating this priority information, the CSM can identify priority data, or latency intolerant data, such as IMS calls or emergency calls. Where network rejects a connection request and issues a wait timer, the CSM may lower the retransmission count to hasten a permanent transmission failure. Upon a permanent transmission failure, the CSM can determine an alternative protocol for transmission of the priority data, such as transmitting data through circuit switch fallback, via Wi-Fi, or through another legacy RAT.

公开(公告)号：US20200305032A1

公开(公告)日：2020-09-24

申请号：US16645278

申请日：2018-11-02

Applicant: Intel IP Corporation

Inventor： Nitin KUPPELUR ,  Deepak DASH ,  Robert ZAUS ,  Shashanka Totadamane Ramappa ,  Vivek G. GUPTA

IPC: H04W36/00 ,  H04W76/38 ,  H04W76/50 ,  H04W76/18 ,  H04W48/18

Abstract: Systems and methods of enabling access for non-emergency voice calls are described. A UE operates in a network supporting voice services via a multitude of RATs. The UE attempts to access the network via a first RAT offering voice services and data services. If the UE does not receive a response from the network within a first time period, the UE re-attempts the access to the network via the first RAT. If the number of access attempts for which the UE does not receive a response is at least a threshold value, the UE refrains during a second time period from further access attempts via the first RAT for the purpose of receiving data services, and continues to attempt access via the first or second RAT for the purpose of receiving voice services.