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Upon detecting an internet management broadcast from a new master node, all devices electing to participate as slave nodes provide their existing advertisements to the new master node in order that its database may be established.

When a current master node becomes incapable of continuing internet management broadcasts e. In a preferred implementation only certain of the participating slave nodes are configured to issue an Gateway C-142 WIDCOMM Bluetooth internet management broadcast subsequent to departure of the previous master node from the piconet. Alternatively or in addition, any remaining slave nodes designated to begin internet management broadcasts are each permitted to do so only after expiration of a random interval.

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In a preferred implementation each wireless node is capable of being configured for operation as either a master node or a slave node. Accordingly, Gateway C-142 WIDCOMM Bluetooth otherwise indicated the following discussion should be considered applicable to both master and slave nodes. The wireless node may also optionally include a second wireless adapter card and a second RF transceiver for communicating in accordance with a second network communication standard.

The second wireless adapter card Gateway C-142 WIDCOMM Bluetooth the second RF transceiver may be included within the wireless node when, for example, it is anticipated that the wireless node may participate in piconets operative in accordance with different network standards. For example, internetworking node S4 would preferably be configured with different wireless transceivers and associated adapter cards to the extent the first piconet 10 and second piconet 20 were governed by differing network communication standards.

The wireless node may also include a LAN adapter card for facilitating communication with a wired LAN, or alternately a wireline modem for effecting communication through the PSTN. Each wireless adapter card and transceiver is controlled by a CPU operative to execute program instructions of the various software routines stored in Gateway C-142 WIDCOMM Bluetooth Within slave nodes, a network resources table is updated in response to internet management broadcasts by the master node of the applicable piconet.

The network resources table stores the network address and services offered by each wireless node within the piconet. In the case of internetworking nodes, these advertised services may include the services provided by a wireless node from a neighboring piconet in communication with the internetworking node.


Within master nodes, the network resources table is constructed by a network resources updating routine on the basis of advertisements received from participating slave nodes within the applicable piconet. Included among the software routines within internetworking nodes is a forwarding routine for forwarding messages to the wired LAN via the LAN adapter cardor to another wireless node via one of the wireless transceiversand associated wireless adapter card An advertisement generating routine operates to generate the advertisements issued by the wireless node which specify its network address and services offered.

In stepa wireless node desiring to register within a piconet initially listens for the presence of advertisements or internet management broadcasts issued by wireless nodes associated with the piconet. If neither an internet management broadcast nor an advertisement is detected steps andthe wireless node issues an advertisement in order to initiate establishment of a piconet in the manner described above step Additional internet management broadcasts separated by network-dependent idle intervals step are Gateway C-142 WIDCOMM Bluetooth issued by the wireless node step If as a result of this negotiation the wireless node is accorded status as a master node stepit begins transmission of internet management broadcasts at network-dependent intervals steps and If it is determined that the wireless node is not to be a master node step or if internet management broadcasts are not detected stepthe wireless node generates an advertisement as a slave node step The wireless node then transmits advertisements step separated by network-dependent idle intervals stepeach such advertisement reflecting the network address of the wireless node and an array of services currently being offered.

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Tables I and II below illustratively represent simplified network resources tables respectively compiled by master nodes M1 and M2 in the context of an exemplary implementation of the network topology of FIG. Once Gateway C-142 WIDCOMM Bluetooth nodes become participating, the advertisements issued by each will reflect attachment of the applicable device. The place to find device driver updates.

Upon accumulation of this information, the network resources table compiled by node M1 will include the following entries: Similarly, the network resources table of node M2 will contain the following entries: In the case where Modem1 is substantially identical to Modem2, the internet management broadcast of master node M1 will preferably only contain information pertinent to Modem1 and the broadcast of node M2 Gateway C-142 WIDCOMM Bluetooth only include information relating to Modem2. Under this condition, the internet management broadcast from node M1 will include: Again, it is assumed that certain of the wireless nodes depicted in FIG.

However, slave nodes within the first and second piconets and need not be within transmission range of other slave nodes within their respective networks. The first and second piconets and each include a set of potentially mobile wireless nodes physically separated by a wall or similar rigid structure In a preferred implementation the first and second gateway units and each include a PhoneNet adapter card or the like for conducting signals to and from the telephone line Although the above application has been described primarily with reference to specific Gateway C-142 WIDCOMM Bluetooth, one skilled in the art can readily appreciate that the teachings of the present invention Gateway C-142 WIDCOMM Bluetooth be applied in other communication contexts.

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Thus the application is meant only to be limited by the scope of the appended claims. Claims 24 What is claimed is: An internetworked communication system comprising: The internetworked communication system of claim 1 wherein said internetworking node further includes: The internetworked communication system of claim 2 wherein said interconnection node includes means for forwarding message information received from said one of said first plurality of wireless nodes to a first of said second plurality of wireless nodes. The internetworked communication system of claim 1 wherein said one of said first plurality of wireless nodes is operative as a first master node, said first master node broadcasting information describing services offered by each of said first plurality of wireless nodes Gateway C-142 WIDCOMM Bluetooth services offered by said second wireless network.

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