JPH0470035A - Preferential transmission system for packet exchange network - Google Patents

Abstract

PURPOSE:To attain the transfer of information with designation of plural preference levels and without using any additional information given from the terminals by setting the priority to each logical path number of terminals end producing a cell setting request with use of a logical path corresponding to the priority of the information to be transferred when a call setting request packet is sent by an optional terminal. CONSTITUTION:The priority is previously set to each logical path number of each terminal. When the desired information is sent from a terminal 10, a call setting request packet is sent out through a logical path of the terminal 10. A packet exchange device 2 receives the call setting request packet and retrieves the date of a prescribed preference level based on the received logical path number. Then the device 2 recognizes the priority of the received request packet. When the data are transferred after a cell is set. The queuing is applied to a trunk circuit transmission queue 5 of a trunk line 6 at the ratio set previously for each queue via the queues 40-4x of the priorities corresponding to those recognized when the calls are set. Thus no addition means is required when the priority recognition information is added to a call setting packet.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides a priority transmission method in a packet switching network [Prior Art] The priority transmission method in a conventional packet switching network has a method for recognizing priorities on the network side. The methods used include adding priority recognition information to call setup packets, or assigning a single priority to each terminal.

[Problem to be solved by the invention]

In the above-mentioned priority recognition method of the priority transmission method in the conventional packet switching network, when each terminal sets up a call, an additional means for adding priority recognition information to the call setup packet is required, or one terminal has the problem that it can only have one priority.

[Means to solve the problem]

The priority transmission method in a packet switching network of the present invention is a priority transmission method in a packet switching network in which a plurality of terminals connected to a packet switching device perform packet multiplex communication using a plurality of logical paths. A configuration in which each priority is defined for each logical path number, the priority corresponding to the logical path number used when receiving a call setup request packet is recognized, and the packet switching network is preferentially transferred according to this priority level. It is.

In the priority transmission method in the packet switching network of the present invention, when the packet switching device recognizes the priority corresponding to the logical path number used when receiving the call setup request packet, the packet is queued in a waiting queue to be processed with the corresponding priority. You may.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

The terminal 10 is connected to the packet switching device 2, and priority levels a to X are defined in advance for each logical path number within the range of the logical path number group 30 for each terminal regarding terminal accommodation conditions. The same applies to terminal 1. The packet switching device W2 is provided with waiting queues corresponding to priorities. For example, the priority level a corresponds to the waiting queue 40, the priority level corresponds to the waiting queue 41, and the priority level X corresponds to the waiting queue 4x. Further, a relay line transmission waiting queue 5 is prepared for each packet to be sent to another packet switching device W2. The plurality of packet switching devices 2 are connected through a relay line 6.

Next, the operation will be explained.

If there is information that you want to transfer from the terminal 10, use a logical path with a predefined priority appropriate for this information,
Sends a call setup request packet.

Packet switching device 2 that received this call setup request packet
Then, using the received logical path number, data of a predefined priority level is searched, and the priority of the received call setup request packet is recognized.

Next, data transfer after the call setup is completed is transferred to the trunk line of the trunk line 6 at a predetermined ratio for each queue via waiting queues 40 to 4x with priorities corresponding to the priorities recognized at the time of call setup. Queue to transmission waiting queue 5. Terminal I
Similar processing is performed for terminals 10 to 1n, and information of a plurality of priorities a to

〔Effect of the invention〕

As explained above, the present invention sets respective priorities to a plurality of logical path numbers of terminals connected to a packet switching device, and transmits information when an arbitrary terminal sends a call setup request packet. By making a call setup request using a logical path that corresponds to the priority of the packet, the packet switching device can recognize the priority, and when transferring data, it will respond to the logical path used by the call setup request packet. By controlling the waiting queue based on priority, there is an effect that information can be transferred by specifying a plurality of priority levels without using additional information from the terminal.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention. 10-1n...Terminal, 2...Packet switching device, 3
0~3n...Logical path number group for each terminal, 40°41
．． 4x...Waiting queue, 5...Relay line transmission waiting queue, 6...Relay line.

Claims (1)

[Claims] 1. In a priority transmission method in a packet switching network in which a plurality of terminals connected to a packet switching device perform packet multiplex communication using a plurality of logical paths, a plurality of logical path numbers for each terminal are set in advance. Each priority is defined in advance, the priority corresponding to a logical path number used when receiving a call setup request packet is recognized, and priority transfer within the packet switching network is performed according to this priority level. Priority transmission method in packet-switched networks. 2. The packet switching device, upon recognizing a priority corresponding to a logical path number used when receiving a call setup request packet, queues the packet in a waiting queue for processing with the corresponding priority. priority transmission method in packet-switched networks.