Method and apparatus for determining location of a subscriber device in
a wireless cellular communications system
    1.
    发明授权
    Method and apparatus for determining location of a subscriber device in a wireless cellular communications system 失效
    用于确定无线蜂窝通信系统中的用户设备的位置的方法和装置

    公开(公告)号:US5815538A

    公开(公告)日:1998-09-29

    申请号:US585261

    申请日:1996-01-11

    CPC分类号: H04W64/00 G01S5/10 G01S5/12

    摘要: The location of a subscriber device in a wireless cellular communications system is established by transmitting digital data signals to a cellular digital data receiver of the subscriber device from at least three different cellular cell site transmitters at known locations. Each data signal has a time-synchronized synchronization signal, preferably synchronized through the time signals of the global positioning system. The time of arrival of each of the time-synchronized synchronization signals is determined with respect to an internal clock of the receiver. The location of the subscriber device is established from the locations of the cell sites and the times of arrival of the synchronization signals relative to the internal clock.

    摘要翻译: 通过在已知位置从至少三个不同的蜂窝小区站点发射机向用户设备的蜂窝数字数据接收机发送数字数据信号来建立无线蜂窝通信系统中用户设备的位置。 每个数据信号具有时间同步的同步信号,优选地通过全球定位系统的时间信号同步。 每个时间同步同步信号的到达时间相对于接收机的内部时钟来确定。 用户设备的位置是从小区站点的位置和同步信号相对于内部时钟的到达时间建立的。

    Satellite-based internet access system with remote prefetching of inline objects of web pages
    2.
    发明授权
    Satellite-based internet access system with remote prefetching of inline objects of web pages 失效
    基于卫星的互联网接入系统,可以远程预取网页的内联对象

    公开(公告)号:US06907429B2

    公开(公告)日:2005-06-14

    申请号:US10355650

    申请日:2003-01-30

    摘要: An satellite-based internet access includes uses a distributed proxy server that reduces a delay associated with the retrieval of inline objects of web pages. The distributed proxy server includes a first component which runs on the browser side of the satellite link and communicates with web browsers, and a second component which runs on an Internet side of the satellite link and communicates with web servers. When a web page is requested over the satellite link, the second component determines whether the parent file includes any references to inline objects, and prefetches each such inline object. The prefetched objects are transmitted over the satellite link to the first component, which in-turn stores the prefetched objects in a cache and provides the prefetched objects to the requesting web browser. The first component may also block browser requests for prefetched inline objects from unnecessarily being transmitted over the satellite link.

    摘要翻译: 基于卫星的互联网访问包括使用分布式代理服务器,其减少与检索网页的内联对象相关联的延迟。 分布式代理服务器包括在卫星链路的浏览器侧​​上运行并与web浏览器通信的第一组件,以及在卫星链路的因特网侧运行并与web服务器通信的第二组件。 当通过卫星链路请求网页时,第二个组件确定父文件是否包含对内联对象的任何引用,并且预取每个这样的内联对象。 预取对象通过卫星链路发送到第一组件,第一组件反过来将预取对象存储在高速缓存中,并将预取对象提供给请求的Web浏览器。 第一组件还可以阻止预取的内联对象的浏览器请求不必要地通过卫星链路发送。

    Distributed system and method for prefetching objects
    3.
    发明授权
    Distributed system and method for prefetching objects 有权
    用于预取对象的分布式系统和方法

    公开(公告)号:US06282542B1

    公开(公告)日:2001-08-28

    申请号:US09129142

    申请日:1998-08-05

    IPC分类号: G06F1730

    摘要: In an internet access system which includes a satellite link, a distributed proxy server (68) is provided which reduces a delay associated with the retrieval of inline objects of web pages. The distributed proxy server (68) includes an access point component (70) and a satellite gateway component (72). The access point component (70) runs on the client (browser) side of the satellite link and communicates with web browsers (20A-20N). The satellite gateway component (72) runs on the internet side of the satellite link and communicates with web servers (26). As a web page is retrieved over the satellite link, the satellite gateway component (72) parses the base file component of the web page to identify any references to inline objects of the web page, and prefetches each such inline object. The distributed proxy server thereby eliminates the delays normally associated with (a) waiting for the web browser (20) to receive the base component and request the object(s), and (b) waiting for the browser's object request(s) to be transmitted over the satellite link. The prefetched objects are transmitted over the satellite link to the access point component (70), which in-turn stores the prefetched objects in an object cache (71). When a web browser (20) requests an inline object, the access point component (70) checks the cache (71), and if the object resides therein, returns the object to the browser (20) without forwarding the object request over the satellite link. Traffic over the forward satellite link is thus reduced. The method implemented by the distributed proxy server (68) can also be used to reduce delays and traffic over other types of links, including non-wireless links.

    摘要翻译: 在包括卫星链路的因特网接入系统中,提供分布式代理服务器(68),其减少与检索网页的内联对象相关联的延迟。 分布式代理服务器(68)包括接入点组件(70)和卫星网关组件(72)。 接入点部件(70)在卫星链路的客户机(浏览器)侧运行,并与网络浏览器(20A-20N)通信。 卫星网关组件(72)在卫星链路的互联网侧运行,并与网络服务器(26)通信。 当通过卫星链路检索网页时,卫星网关组件(72)解析网页的基本文件组件以识别对网页的内联对象的任何引用,并预取每个这样的内联对象。 分布式代理服务器从而消除通常与(a)等待网络浏览器(20)接收基本组件并请求对象通常相关联的延迟,以及(b)等待浏览器的对象请求为 通过卫星链路传输。 预取对象通过卫星链路发送到接入点组件(70),接入点组件(70)反过来将预取对象存储在对象高速缓存(71)中。 当网络浏览器(20)请求内联对象时,接入点组件(70)检查高速缓存(71),并且如果对象驻留在其中,则将对象返回给浏览器(20),而不通过卫星转发对象请求 链接。 因此,前向卫星链路上的业务量减少。 分布式代理服务器(68)实现的方法还可用于减少包括非无线链路在内的其他类型链路的延迟和流量。

    Distributed system and method for prefetching objects
    4.
    发明授权
    Distributed system and method for prefetching objects 失效
    用于预取对象的分布式系统和方法

    公开(公告)号:US06598048B2

    公开(公告)日:2003-07-22

    申请号:US09903950

    申请日:2001-07-12

    IPC分类号: G06F1730

    摘要: A distributed proxy server is provided which reduces a delay associated with the retrieval of inline objects of web pages retrieved over a satellite link. The distributed proxy server includes a first component which runs on the browser side of the satellite link and communicates with web browsers, and a second component which runs on an Internet side of the satellite link and communicates with web servers. When a web page is requested over the satellite link and communicates with web servers. When a web page is requested over the satellite ink, the second component determines whether the parent file includes any references to inline objects, and prefetches each such inline object. The prefetched objects are transmitted over the satellite link to the first component, which in-turn stores the prefetched objets in a cache and provides the prefetched objects to the requesting web browser. The first component may also block browser requests for prefetched inline objects from unnecessarily being transmitted over the satellite link.

    摘要翻译: 提供分布式代理服务器,其减少与通过卫星链路检索的网页的内联对象的检索相关联的延迟。 分布式代理服务器包括在卫星链路的浏览器侧​​上运行并与web浏览器通信的第一组件,以及在卫星链路的因特网侧运行并与web服务器通信的第二组件。 当通过卫星链路请求网页并与Web服务器通信时。 当通过卫星墨水请求网页时,第二组件确定父文件是否包括对内联对象的任何引用,并且预取每个这样的内联对象。 预取的对象通过卫星链路发送到第一组件,第一组件反过来将预取对象存储在高速缓存中,并将预取对象提供给请求的Web浏览器。 第一组件还可以阻止预取的内联对象的浏览器请求不必要地通过卫星链路发送。