会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明申请
    • CONFERENCING PSTN GATEWAY METHODS AND APPARATUS TO FACILITATE HETEROGENEOUS WIRELESS NETWORK HANDOVERS FOR MOBILE COMMUNICATION DEVICES
    • 配备PSTN网关方式和设备,为移动通信设备的异构无线网络切换提供便利
    • WO2007033485A2
    • 2007-03-29
    • PCT/CA2006001560
    • 2006-09-22
    • RESEARCH IN MOTION LTDUNIV MCMASTERKEZYS VYTAUTAS ROBERTASTODD TERENCE DSMADI MOHAMMEDZHAO DONGMEI
    • KEZYS VYTAUTAS ROBERTASTODD TERENCE DSMADI MOHAMMEDZHAO DONGMEI
    • H04W36/14H04W76/04H04W84/12H04W88/06H04W92/02
    • H04L12/6418H04L29/06027H04L65/1083H04L65/4038H04M7/1235H04W36/14H04W36/18H04W76/02H04W76/041H04W76/043H04W84/12H04W88/06H04W88/16H04W92/02
    • In one illustrative example, a mobile communication device operating in a wireless local area network (WLAN) of a communication network maintains an inter-enterprise voice call via its WLAN interface (e.g. 802.11/VoIP/SIP) with another communication device in the communication network. Communications of the voice call are maintained solely within the communication network and not routed through a conferencing gateway. During the voice call, a handover of the voice call from the WLAN to a wireless wide area network (WWAN) (e.g. GSM/GPRS) may or may not be required. In response to identifying a handover indication during the voice call, the mobile device causes a request message (e.g. a SIP INVITE message) to be sent over the WWAN to the conferencing gateway for establishing a first connection leg through the WWAN via its WWAN interface with a conference room of the conferencing gateway. The mobile device also causes a re-routing message (e.g. a SIP REFER message) to be sent over the WLAN to the communication device, so that a second connection leg between the communication device and the conference room of the conferencing gateway may be established. The first and the second connection legs are connected together in the conference room of the conferencing gateway for the voice call. Advantageously, inter-enterprise voice calls in the communication network need not unnecessarily and unduly burden the conferencing gateway, unless and until a handover of the voice call between the WLAN and the WWAN is required. Variations and other PSTN conferencing gateway techniques are also described.
    • 在一个说明性示例中,在通信网络的无线局域网(WLAN)中操作的移动通信设备通过其WLAN接口(例如,802.11 / VoIP / SIP)与通信网络中的另一通信设备维护企业间语音呼叫 。 语音呼叫的通信仅保持在通信网络内,而不通过会议网关路由。 在语音呼叫期间,可以或不需要将语音呼叫从WLAN切换到无线广域网(WWAN)(例如GSM / GPRS)。 响应于在语音呼叫期间识别切换指示,移动设备使得请求消息(例如,SIP INVITE消息)通过WWAN发送到会议网关,用于经由其WWAN经由其WWAN接口建立第一连接腿, 会议网关的会议室。 移动设备还使得重新路由消息(例如,SIP REFER消息)通过WLAN发送到通信设备,使得可以建立通信设备和会议网关的会议室之间的第二连接分支。 第一和第二连接腿在会议网关的会议室中连接在一起,用于语音呼叫。 有利的是,除非需要WLAN和WWAN之间的语音呼叫切换,否则通信网络中的企业间语音呼叫不需要不必要地过度地加重会议网关。 还描述了变型和其他PSTN会议网关技术。