发明名称 |
METHOD AND DEVICE FOR PREVENTING MOBILE-TERMINATED CALL DROP |
摘要 |
Provided is a method of sending and receiving signals for a user equipment (UE) in a mobile communication system. The method may include: receiving a service reject message from a Mobility Management Entity (MME) under congestion; sending a message containing at least one piece of information determined based on the service reject message to a Mobile Switching Center (MSC); receiving a message containing camping cell information from a base station (eNB); and camping on a cell indicated by the camping cell information. In one embodiment, when an MM back-off timer is applied to the UE utilizing CSFB (or SMS over SGs) at the time of network congestion, the MSC or 2G/3G RAN node is notified that the MM back-off timer is running in the UE, so that the UE may camp not on an LTE cell but on a 2G/3G cell after CS service reception. Hence, it is possible to prevent call drops for MT services that may be caused by UE location registration failure due to the MM back-off timer. |
申请公布号 |
US2015141011(A1) |
申请公布日期 |
2015.05.21 |
申请号 |
US201314401328 |
申请日期 |
2013.05.14 |
申请人 |
Samsung Electronics Co., Ltd. |
发明人 |
Jeong Sang Soo;Lim Han Na;Cho Song Yean |
分类号 |
H04W28/02;H04W8/02;H04W60/04 |
主分类号 |
H04W28/02 |
代理机构 |
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代理人 |
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主权项 |
1. A method of sending and receiving signals for a user equipment (UE) in a mobile communication system, the method comprising:
receiving a service reject message from a mobility management entity (MME) under congestion; sending a message containing at least one piece of information determined based on the service reject message to a mobile switching center (MSC); receiving a message containing camping cell information from a base station (eNB); and camping on a cell indicated by the camping cell information. |
地址 |
Gyeonggi-do KR |