Invention Grant
US08625418B2 System and method for improving service and device discovery in a UPnP-based wireless communication network
有权
在基于UPnP的无线通信网络中改进服务和设备发现的系统和方法
- Patent Title: System and method for improving service and device discovery in a UPnP-based wireless communication network
- Patent Title (中): 在基于UPnP的无线通信网络中改进服务和设备发现的系统和方法
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Application No.: US12096621Application Date: 2006-11-24
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Publication No.: US08625418B2Publication Date: 2014-01-07
- Inventor: Oliver Kraemer , Shin Saito
- Applicant: Oliver Kraemer , Shin Saito
- Applicant Address: DE Berlin
- Assignee: Sony Deutschland GmbH
- Current Assignee: Sony Deutschland GmbH
- Current Assignee Address: DE Berlin
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: EP05028274 20051223
- International Application: PCT/EP2006/011306 WO 20061124
- International Announcement: WO2007/073814 WO 20070705
- Main IPC: G01R31/08
- IPC: G01R31/08 ; G06F11/00

Abstract:
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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