Systems and Methods for Seamlessly Roaming Between a Wireless Wide Area Network and a Wireless Local Area Network
    1.
    发明申请
    Systems and Methods for Seamlessly Roaming Between a Wireless Wide Area Network and a Wireless Local Area Network 有权
    无线广域网与无线局域网无缝漫游的系统与方法

    公开(公告)号:US20070270145A1

    公开(公告)日:2007-11-22

    申请号:US10555676

    申请日:2004-05-06

    IPC分类号: H04Q7/20

    摘要: The present invention takes the advantage of the WLAN resources in hotspots for voice and data connections and enables seamless handover between WWAN and WLAN and vice versa. This allows two users in the hotspots to communicate with each other by making a voice over IP (VoIP) or video call, thus achieving cost savings for the end users and WWAN resources savings for the wireless operators. According to one embodiment of the invention, a mobile terminal has wireless wide area network (WWAN) and wireless local area network (WLAN) interfaces. The mobile terminal via a WWAN. If a WLAN is present, the mobile terminal sends a handover request together with its network address to the called mobile terminal, using a short message service (SMS) technique or a watermarking technique, for initiating a WLAN call with the called mobile terminal via a WLAN. After the WLAN call is established with the called mobile terminal, the mobile terminal releases the WWAN call.

    摘要翻译: 本发明利用WLAN资源在热点中进行语音和数据连接,并实现WWAN与WLAN之间的无缝切换,反之亦然。 这允许热点中的两个用户通过IP(VoIP)或视频呼叫进行通信,从而为终端用户节省成本,并为无线运营商节省WWAN资源。 根据本发明的一个实施例,移动终端具有无线广域网(WWAN)和无线局域网(WLAN)接口。 移动终端通过WWAN。 如果存在WLAN,则移动终端使用短消息服务(SMS)技术或水印技术将与其网络地址一起的切换请求发送到被叫移动终端,以通过经由呼叫的移动终端发起WLAN呼叫 WLAN。 在与被叫移动终端建立WLAN呼叫之后,移动终端释放WWAN呼叫。

    Systems and methods for seamlessly roaming between a wireless wide area network and a wireless local area network
    2.
    发明授权
    Systems and methods for seamlessly roaming between a wireless wide area network and a wireless local area network 有权
    在无线广域网和无线局域网之间无缝漫游的系统和方法

    公开(公告)号:US08432868B2

    公开(公告)日:2013-04-30

    申请号:US10555676

    申请日:2004-05-06

    IPC分类号: H04W4/00

    摘要: The present invention takes the advantage of the WLAN resources in hotspots for voice and data connections and enables seamless handover between WWAN and WLAN and vice versa. This allows two users in the hotspots to communicate with each other by making a voice over IP (VoIP) or video call, thus achieving cost savings for the end users and WWAN resources savings for the wireless operators. According to one embodiment of the invention, a mobile terminal has wireless wide area network (WWAN) and wireless local area network (WLAN) interfaces. The mobile terminal via a WWAN. If a WLAN is present, the mobile terminal sends a handover request together with its network address to the called mobile terminal, using a short message service (SMS) technique or a watermarking technique, for initiating a WLAN call with the called mobile terminal via a WLAN. After the WLAN call is established with the called mobile terminal, the mobile terminal releases the WWAN call.

    摘要翻译: 本发明利用WLAN资源在热点中进行语音和数据连接,并实现WWAN与WLAN之间的无缝切换,反之亦然。 这允许热点中的两个用户通过IP(VoIP)或视频呼叫进行通信,从而为终端用户节省成本,并为无线运营商节省WWAN资源。 根据本发明的一个实施例,移动终端具有无线广域网(WWAN)和无线局域网(WLAN)接口。 移动终端通过WWAN。 如果存在WLAN,则移动终端使用短消息服务(SMS)技术或水印技术将与其网络地址一起的切换请求发送到被叫移动终端,以通过经由呼叫的移动终端发起WLAN呼叫 WLAN。 在与被叫移动终端建立WLAN呼叫之后,移动终端释放WWAN呼叫。

    Effective point coordination function in wireless lan
    3.
    发明申请
    Effective point coordination function in wireless lan 审中-公开
    无线局域网中的有效点协调功能

    公开(公告)号:US20060165021A1

    公开(公告)日:2006-07-27

    申请号:US10540051

    申请日:2003-12-15

    申请人: Jianbo Tian Qunli Jia

    发明人: Jianbo Tian Qunli Jia

    IPC分类号: H04B7/00

    CPC分类号: H04W74/02 H04W84/12

    摘要: This invention provides a system and method for enhancing point coordination function in wireless LANs. A contention procedure is introduced into PCF in this invention. When the point coordinator (PC) polls the mobile terminal who has no frame to send, the terminal does not respond to the CF-Poll from PC, and will adjust its NAV and set it to a special value that is defined as SPIFS. When data is ready on this mobile terminal, the terminal can contend for accessing the medium. If it detects the medium to be idle for SPIFS period during the CFP, then the mobile terminal gains the control of medium and starts to send the ready data. So this mobile terminal can have another opportunity to gain the control of medium during this CFP instead of next CFP, and this can decrease the transmission delay.

    摘要翻译: 本发明提供一种用于增强无线LAN中的点协调功能的系统和方法。 在本发明中将争用程序引入到PCF中。 当点协调器(PC)轮询没有帧发送的移动终端时,终端不从PC响应CF-Poll,并且将调整其NAV并将其设置为被定义为SPIFS的特殊值。 当移动终端上的数据准备就绪时,终端可以争取接入媒体。 如果在CFP期间检测到SPIFS周期的媒体空闲,则移动终端获得媒体的控制并开始发送就绪数据。 因此,这个移动终端可以有另一个机会在这个CFP而不是下一个CFP中获得媒体的控制,这样可以减少传输延迟。