| 摘要 |
A mechanism is provided to enable a station to discover link/network/service information about a potential wireless point of attachment by extending the set of information that is available before the station actually authenticates and associates to the wireless point of attachment. The mechanism includes a method for interworking between a Wireless Local Area Network (WLAN), including that defined in IEEE 802.11 Standard Protocol, and one or more other networks, including a 3GPP, 3GPP2 or IEEE 802.16), featuring extending a set of information that is available before a network node actually authenticates and associates to the wireless point of attachment. The network node may be a station (STA), and the beacon may contain the set of information, where the beacon is extended with information that allow a terminal to identify if mobility (handoff) to an access point (AP) implies an L3 handoff or only an L2 handoff, including information about a subnet prefix of a subnet a new AP belongs to. When a station (STA) listens to the beacon, the STA discovers that the AP can provide additional information. If the STA is interested, the STA sends a probe request indicating which information it requires, and the AP returns available information in a probe response based on the information. |
