Patent Number: 6,310,877

Title: Method of connectionless message transfer in an asynchronous transfer mode network

Abstract: A method of transferring relatively short messages in an Asynchronous Transfer Mode network utilizing an emulated connectionless oriented technique. The method permits a short burst of data to be transmitted between users, utilizing a modified signaling scheme. The signaling scheme is modified so as to emulate a connectionless scheme whereby messages are transferred with no guarantee of delivery. The length of a message can be up to 47 bytes, i.e., the length of the data content of a single ATM cell. The method includes sending a setup message from the source user to the attached node requesting that a call of the fast type be set up. In response to this setup message, the attached node replies with a connect message indicating to the source user that it can immediately begin to transmit its short message. Thus, the source user does not have to wait before sending any data for the setup message to propagate through the network to the destination user and then have the connect message, generated by the destination user, return to the source user. The attached node, calculates a route and forwards the setup message to the subsequent node. Each node along the path configures its software and hardware to receive the call. Once the short message is received by a node and forwarded to the subsequent node, the node releases the resources allocated for the call.

Inventors: Rochberger; Haim (Netanya, IL)

Assignee: 3Com Corporation

International Classification: H04Q 11/04 (20060101); H04L 12/56 (20060101); H04L 012/28 ()

Expiration Date: 10/30/2018