发明申请
US20080304408A1 System and Method for Improving Service and Device Discovery in a Upnp-Based Wireless Communication Network 有权
用于改进基于UPnp的无线通信网络中的服务和设备发现的系统和方法

  • 专利标题: System and Method for Improving Service and Device Discovery in a Upnp-Based Wireless Communication Network
  • 专利标题(中): 用于改进基于UPnp的无线通信网络中的服务和设备发现的系统和方法
  • 申请号: US12096621
    申请日: 2006-11-24
  • 公开(公告)号: US20080304408A1
    公开(公告)日: 2008-12-11
  • 发明人: Oliver KraemerShin Saito
  • 申请人: Oliver KraemerShin Saito
  • 申请人地址: DE Berlin
  • 专利权人: Sony Deutschland GmbH
  • 当前专利权人: Sony Deutschland GmbH
  • 当前专利权人地址: DE Berlin
  • 优先权: EP05028274.8 20051223
  • 国际申请: PCT/EP2006/011306 WO 20061124
  • 主分类号: H04B7/216
  • IPC分类号: H04B7/216
System and Method for Improving Service and Device Discovery in a Upnp-Based Wireless Communication Network
摘要:
A system and method that improve service and device discovery in a UPnP-based wireless communication network and avoids unnecessary broadcast messages on a MAC sublayer of a DLC layer caused by UPnP multicast messages on an IP layer by intercepting UPnP multicast messages in a network protocol stack below the IP layer. A module intercepts multicast UDP packets destined to a UPnP IP multicast address and port, the multicast UDP packets containing UPnP packets as payload. The module executes DLC/MAC-based service discovery functions to perform wireless network-specific device discovery and to find UPnP-enabled devices in the wireless communication network. Once a wireless network device discovery has returned nodes that fulfill criteria given in the search, the module uses unicast DLC/MAC messages to send UPnP packets to only those nodes that are UPnP-enabled and whose device type matches the respective UPnP device type sought.
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