Unlock instant, AI-driven research and patent intelligence for your innovation.

Subport multipoint transmission method in asynchronous transmission exchange system

A technology of asynchronous transmission mode and switching ports, which is applied in the field of sub-port multipoint transmission, and can solve the problem of limited number

Inactive Publication Date: 2003-03-05
ERICSSON-LG
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this network environment, the ATM switching system of the prior art has problems due to the limited number of connections available for multicasting, because the multipoint corresponding to the subport on the egress port side should be reserved in advance for the multicasting connection. send connection id
Also, a subport multicast table with as many entries as the maximum number of reserved subport multicast connections should be stored and maintained for each egress port, which can cause significant hardware overhead in a given system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Subport multipoint transmission method in asynchronous transmission exchange system
  • Subport multipoint transmission method in asynchronous transmission exchange system
  • Subport multipoint transmission method in asynchronous transmission exchange system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] Detailed Description of Preferred Embodiments

[0053] In the ATM switching system of the present invention, in order to multicast at the entry port card, by inserting the fan-out sub-port information corresponding to the connection ID into the local header of the cell, the switching port number on the side of the exit port card is used to perform the sub-port routing. Port multicast. The sub-port multicast structure of the ATM switching system shown in FIG.

[0054] In order to obtain the fan-out switch port information of the multicast cell and the fan-out sub-port information of each sub-port connected to each switch port, using the connection ID, the ingress port card 50 accesses the virtual connection parameter table (not shown in the figure ). This information is inserted in the local header of the cell in bitmap format. After setting the multicast indication field of the relevant cell, the ingress port card 50 transmits the cell to the egress port card 70 thro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method for sub-port multicasting in an Asynchronous Transfer Mode (ATM) switching system, includes inserting multicast fan-out port information for sub-ports of each of a plurality of switch ports into a multicast cell at an ingress port card, transmitting the multicast cell to an egress port card, reading the multicast fan-out port information from the multicast cell at the egress port card, and performing multicasting for the sub-ports corresponding to the multicast fan-out port information.

Description

field of invention [0001] The present invention relates to a method for subport multipoint transmission in an asynchronous transfer mode (ATM) switching system, in particular to multipoint transmission by extracting subport fan-out information inserted in the cell local header. Background technique [0002] In general, the ATM method divides user information into packets of a specific size, inserts destination information into the header portion of the packet, transmits the packet as a fixed-size cell, and restores the original information in the transmitted packet. The ATM switching system provides the header address value to the user terminal in the destination information. Before transmission, append the header address value in front of the user information. Thereafter, the switching system can easily identify the user information, convert it into cell packets, and transmit it to the next destination. [0003] Figure 1 shows the overall structure of this type of ATM swi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/50H04L12/18H04L49/111
CPCH04L49/3009H04L49/201H04L49/203H04L12/50
Inventor 李钟翊
Owner ERICSSON-LG