公开(公告)号：WO2013148101A3

公开(公告)日：2014-01-23

申请号：PCT/US2013029514

申请日：2013-03-07

Applicant: QUALCOMM INC

Inventor： RAMACHANDRAN SHYAMAL ,  KLINGENBRUNN THOMAS ,  REN ZHONG ,  DRAPKIN VITALY

IPC: H04W76/02 ,  H04W76/06

CPC classification number: H04W76/02 ,  H04W76/026 ,  H04W76/027 ,  H04W76/028 ,  H04W76/062

Abstract: The application relates to session management in wireless communication networks, in particular LTE networks, where a PDN connection is disconnected locally by a user equipment UE while in LTE coverage. The standards assume that the network and the UE are always in sync. However, there may be situations, not anticipated by the standards, which may lead to the UE being out of sync with the network. For example, the UE might disconnect locally, e.g. via closure of a browser on the UE), and does not inform the network, e.g. because the UE was instructed to stop sending messages on a PDN for a predetermined time period. Therefore, when the UE request to reconnect to a PDN, the network may reject the UEs request as it still thinks that the UE is connected to the PDN. The problem is solved in that in the given situation the UE performs a tracking area update TAU procedure (812) before it requests to reconnect to the PDN (814). Another solutions foresees to start a TAU procedure whenever unexpected active radio bearer contexts exist.

Abstract translation: 该应用涉及无线通信网络中的会话管理，特别是在LTE覆盖范围内，PDN连接在本地由用户设备UE本地断开的LTE网络。 标准假设网络和UE始终保持同步。 然而，可能存在这样的情况，标准不能预期，这可能导致UE与网络不同步。 例如，UE可能在本地断开，例如， 通过关闭UE上的浏览器），并且不通知网络，例如， 因为UE被指示停止在PDN上发送消息一段预定时间段。 因此，当UE请求重新连接到PDN时，网络可以拒绝UE请求，因为它仍然认为UE连接到PDN。 解决的问题在于，在给定情况下，UE在请求重新连接到PDN之前执行跟踪区域更新TAU过程（812）（814）。 另一种解决方案预见，只要存在意外的有源无线电承载上下文，就启动一个TAU程序。