发明名称 |
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. |
申请公布号 |
US8625418(B2) |
申请公布日期 |
2014.01.07 |
申请号 |
US20060096621 |
申请日期 |
2006.11.24 |
申请人 |
KRAEMER OLIVER;SAITO SHIN;SONY DEUTSCHLAND GMBH |
发明人 |
KRAEMER OLIVER;SAITO SHIN |
分类号 |
G01R31/08;G06F11/00 |
主分类号 |
G01R31/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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