公开(公告)号：US20130100795A1

公开(公告)日：2013-04-25

申请号：US13523838

申请日：2012-06-14

Applicant: Suli Zhao ,  Srinivasan Balasubramanian ,  Ajith Tom Payyappilly ,  Vaibhav Kumar ,  Shian-De Ju

Inventor： Suli Zhao ,  Srinivasan Balasubramanian ,  Ajith Tom Payyappilly ,  Vaibhav Kumar ,  Shian-De Ju

IPC: H04W36/00 ,  H04W60/04

CPC classification number: H04W36/0016 ,  H04W76/19 ,  H04W88/06

Abstract: Aspects disclosed herein relate to effectively handling failure and retry mechanisms during pre-registration for an eHRPD optimized handover. In one example, a UE may be equipped to detect one or more instances of failure during a pre-registration procedure as part of an optimized handover process. The UE may further be equipped to perform one or more pre-registration retry processes based on the detected one or more instances of failure. In one aspect, the one or more instances of failure may include any combination of a permanent LTE connection failure, a temporary LTE connection failure, a session negotiation failure, a virtual connection failure when bringing up a data call, a link control protocol (LCP) failure, etc.

Abstract translation: 本文公开的方面涉及在eHRPD优化切换的预注册期间有效地处理故障和重试机制。 在一个示例中，UE可以被配备为在预注册过程期间检测一个或多个故障实例，作为优化的切换过程的一部分。 UE还可以被配备为基于检测到的一个或多个故障实例来执行一个或多个预注册重试过程。 在一个方面，一个或多个故障实例可以包括永久性LTE连接故障，临时LTE连接故障，会话协商失败，提起数据呼叫时的虚拟连接故障，链路控制协议（LCP ）失败等

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：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。