公开(公告)号：US20120320733A1

公开(公告)日：2012-12-20

申请号：US13460788

申请日：2012-04-30

Applicant: Suli Zhao ,  Ajith Tom Payyappilly ,  Jinghui Yang ,  Sidharth D. Chitnis ,  Shrawan Kumar Khatri

Inventor： Suli Zhao ,  Ajith Tom Payyappilly ,  Jinghui Yang ,  Sidharth D. Chitnis ,  Shrawan Kumar Khatri

IPC: H04W24/00 ,  H04W36/00

CPC classification number: H04W76/20 ,  H04W36/0011

Abstract: During inter-radio access technology (IRAT) handover between LTE and eHRPD technologies, Internet protocol (IP) service continuity at a user equipment (UE) may be maintained. Thus, a method, an apparatus, and a computer program product are provided for maintaining the IP service continuity during IRAT handover from an SRAT to a TRAT within an evolved packet core (EPC)—capable region. The apparatus attempts to transfer an EPC context to a TRAT, determines that a failure occurs when attempting to transfer the EPC context to the TRAT, and attempts to maintain at least one IP service continuity within the EPC context according to the failure. The attempt to maintain may include an attempt to maintain an entire EPC context or a set of parameters including at least one of an IP address, a domain name system (DNS) address, a proxy call session control function (P-CSCF) address, or a quality of service (QoS).

Abstract translation: 在LTE和eHRPD技术之间的无线间接入技术（IRAT）切换期间，可以维护用户设备（UE）处的因特网协议（IP）业务连续性。 因此，提供了一种方法，装置和计算机程序产品，用于在演进的分组核心（EPC）能力区域内的SRAT到SRAT之间的TRAT切换期间维持IP服务连续性。 该设备尝试将EPC上下文传送到TRAT，确定在尝试将EPC上下文传送到TRAT时发生故障，并尝试根据故障在EPC上下文内保持至少一个IP服务连续性。 维护的尝试可以包括维护整个EPC上下文或一组参数的尝试，包括IP地址，域名系统（DNS）地址，代理呼叫会话控制功能（P-CSCF）地址， 或服务质量（QoS）。

公开(公告)号：US20110213897A1

公开(公告)日：2011-09-01

申请号：US13023736

申请日：2011-02-09

Applicant: Suli Zhao ,  Srinivasan Balasubramanian ,  Ajith T. Payyappilly

Inventor： Suli Zhao ,  Srinivasan Balasubramanian ,  Ajith T. Payyappilly

IPC: G06F15/16

CPC classification number: H04W76/10 ,  H04W76/18 ,  H04W76/19

Abstract: Systems and methods for releasing stale connection contexts are provided herein. The systems and methods help to ensure that connection records between mobile devices and communications nodes are synchronized so as to avoid and/or fix stale connection contexts.

Abstract translation: 本文提供了用于释放过时连接上下文的系统和方法。 系统和方法有助于确保移动设备和通信节点之间的连接记录被同步，以避免和/或修复过时的连接上下文。

公开(公告)号：US20110149725A1

公开(公告)日：2011-06-23

申请号：US12971446

申请日：2010-12-17

Applicant: Suli Zhao ,  Srinivasan Balasubramanian ,  Ajith Tom Payyappilly

Inventor： Suli Zhao ,  Srinivasan Balasubramanian ,  Ajith Tom Payyappilly

IPC: G06F11/00

CPC classification number: H04L69/40 ,  H04W12/06 ,  H04W76/18

Abstract: A method for optimizing data retry mechanisms is described. The method includes attempting to originate a data call on an evolved high rate packet data system. The method also includes determining that originating the data call has failed. A type of failure that caused the data call to fail is determined. The frequency of data call origination attempts is reduced based on the type of failure.

Abstract translation: 描述了优化数据重试机制的方法。 该方法包括尝试在演进的高速率分组数据系统上发起数据呼叫。 该方法还包括确定始发数据呼叫失败。 确定导致数据调用失败的一种故障类型。 数据呼叫发起尝试的频率根据故障类型而减少。