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    • 32. 发明授权
    • Preferred system selection enhancements for multi-mode wireless systems
    • 多模式无线系统的首选系统选择增强功能
    • US08989733B2
    • 2015-03-24
    • US12423520
    • 2009-04-14
    • Young C. YoonSrinivasan BalasubramanianArvind Swaminathan
    • Young C. YoonSrinivasan BalasubramanianArvind Swaminathan
    • H04W4/00H04W48/16H04W8/18H04W48/18H04W88/06
    • H04W48/16H04W8/18H04W48/18H04W88/06
    • Systems and methodologies are described that facilitate improved multi-mode system selection in a wireless communication system. As described herein, various techniques can be utilized to synthesize system databases corresponding to disparate groups of radio access technologies (RATs), such as a Public Land Mobile Network (PLMN) list and/or a Preferred Roaming List (PRL), with one or more overlay databases and associated location information to generate a multi-mode list of preferred systems. As described herein, a preferred system listing can be constructed to leverage fine granularity of information in one or more databases while still supporting databases with coarser information. Techniques are additionally described herein for augmenting and/or grouping one or more overlay databases to facilitate a higher available granularity of information for various RATs than that provided in system databases corresponding to the RATs. Techniques are additionally provided for automated generation of preferred system listing based on changes to observed location.
    • 描述了有助于在无线通信系统中改进的多模式系统选择的系统和方法。 如本文所描述的,可以使用各种技术来合成对应于诸如公共陆地移动网络(PLMN)列表和/或优选漫游列表(PRL)的无线电接入技术(RAT)的不同组的系统数据库,其中一个或 更多的覆盖数据库和相关联的位置信息,以生成优选系统的多模式列表。 如本文所述,可以构建优选的系统列表,以利用一个或多个数据库中的细粒度的信息,同时仍然支持具有较粗信息的数据库。 本文另外描述了用于增强和/或分组一个或多个覆盖数据库的技术,以促进针对各种RAT的信息的更高的可用粒度,而不是与对应于RAT的系统数据库中提供的信息的更高的可用粒度。 另外还提​​供了用于基于对观察位置的变化来自动生成优选系统列表的技术。
    • 36. 发明授权
    • Call establishment and maintenance in a wireless network
    • 无线网络中的呼叫建立和维护
    • US08849297B2
    • 2014-09-30
    • US11777210
    • 2007-07-12
    • Srinivasan Balasubramanian
    • Srinivasan Balasubramanian
    • H04W72/00
    • H04L41/5054H04L41/0253H04L41/0806H04L43/0847H04L43/0852H04L43/087H04L43/16H04W4/90H04W48/18H04W76/10H04W76/50
    • Techniques to configure quality of service (QoS) and utilize radio resources for a call in a WLAN are described. In an aspect, a station ensures that an access point in the WLAN is suitable for receiving service prior to performing registration to receive services via the WLAN. In another aspect, the station first requests for radio resources for traffic flows, then requests for radio resources for signaling flows, and sends signaling as best effort traffic if radio resources are not granted for the signaling flows. In yet another aspect, the station aggregates QoS for multiple applications and requests for radio resources based on the aggregated QoS. In yet another aspect, the station releases extra radio resources corresponding to the difference between the QoS granted by the WLAN and the QoS proposed by a remote terminal for the call. In yet another aspect, the station requests for the same QoS or lower from a new access point during handoff.
    • 描述了在WLAN中配置服务质量(QoS)和利用无线电资源进行呼叫的技术。 在一个方面,站确保WLAN中的接入点适合于在执行注册之前接收服务以经由WLAN接收服务。 在另一方面,站首先请求无线电资源用于业务流,然后请求用于信令流的无线电资源,并且如果未向信令流授予无线电资源,则将信令作为尽力流量发送。 在另一方面,站聚合基于聚合QoS的多个应用的​​QoS和对无线电资源的请求。 在另一方面,该站释放对应于由WLAN授予的QoS与针对该呼叫的远程终端提出的QoS之间的差异的额外的无线电资源。 在另一方面,站在切换期间从新的接入点请求相同的QoS或更低的QoS。
    • 37. 发明授权
    • Protocol fallback technique for wireless data communications
    • 无线数据通信的协议回退技术
    • US08817600B2
    • 2014-08-26
    • US12621062
    • 2009-11-18
    • Ajith T. PayyappillySrinivasan Balasubramanian
    • Ajith T. PayyappillySrinivasan Balasubramanian
    • H04W74/02H04W76/02H04W36/00H04W28/04H04W60/02
    • H04W76/027H04W28/04H04W36/0066H04W60/02H04W76/18H04W76/19
    • A wireless communications device is configured to establish a radio level session with a network at a relatively high or highest protocol level among a plurality of protocol levels supported. Upon failures in establishing, or during, a network level data session, the radio level session is closed. Thereafter, the device re-attempts to establish the network level session at a lower, fallback protocol level, by pretending it is a legacy device incapable of supporting the high protocol level. In this manner, the network is likely to follow a different procedure in establishing data communications, whereby an error that caused the failure is less likely to be repeated. As examples, error conditions in eHRPD data sessions result in fallback to HRPD or 1xRTT data sessions. A network based alternative embodiment implements protocol fallback via appropriate fallback instructions to the wireless device.
    • 无线通信设备被配置为在所支持的多个协议级别中的相对较高或最高协议级别与网络建立无线电级会话。 在建立或在网络级数据会话期间发生故障时,关闭无线电级别会话。 此后,设备重新尝试以较低的回退协议级别建立网络级会话,假设它是不能支持高协议级别的传统设备。 以这种方式,网络可能遵循建立数据通信的不同过程,由此导致故障的错误不太可能被重复。 作为示例,eHRPD数据会话中的错误条件导致HRPD或1xRTT数据会话的回退。 基于网络的替代实施例通过适当的回退指令实现到无线设备的协议回退。