JPH0595373A - Multi-link control system - Google Patents

Abstract

PURPOSE:To use a multi-link procedure with a line configuration for which a delay and a profltability are considered. CONSTITUTION:A through put value memory 301 stores the quantity of transmission and reception data between multi-links in a multi-link procedure counted and stored by a quantity of transmission and reception data counter memory 300. A line quality value memory 201 stores the number of times of error each line counted and stored by an error counter memory 200. Based on the data stored in the through put value memories 301, 302 and the line quality value memory 201, an optimum line constitution is selected from multi- link lines 100, 101, 102, the data transmission and reception ratio of each line is stored in a data transmission ratio memory 400 and a packet switchboard A performs a multi-link control in accordance with this transmission and reception ratio and the selected circuitry.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multilink control system in a packet switch.

[0002]

2. Description of the Related Art Conventionally, in multi-link control in a packet switch, the throughput and line quality of each line are estimated within a predetermined line configuration, and the ratio of transmitted / received data of each line is fixed in advance.

[0003]

In the above-mentioned conventional multi-link control system, the data amount is small because it is operated under the fixed rule regardless of the amount of transmitted / received data passing through the multi-link and the quality of the constructed line. , If it is not necessary to use the maximum number of lines in a multilink, or if one of the lines that make up a multilink is of poor quality, data will be mixed up and the multilink will transmit more than the single link. There is a drawback that the efficiency is extremely reduced.

[0004]

A multilink control system according to the present invention comprises first storage means for storing the amount of data transmitted and received between multilinks in a multilink procedure.
The packet switch is provided with a second storage unit for storing the number of errors for each line constituting the multi-link, and at a constant time obtained from the data stored in each of the first and second storage units. This is a configuration in which the line configuration in the multi-link and each line data transmission / reception ratio are automatically selected to optimum values based on the amount of transmitted / received data and the number of errors.

[0005]

The present invention will be described below with reference to the drawings.

FIG. 1A is a system configuration diagram of a packet switch for explaining the present invention, in which a multilink line constituted by n lines exists between the packet switches A and B. In this example, three lines 100 to 102 will be described as an example. FIG. 1B is a block diagram showing an embodiment of the present invention. Each memory shown in the drawing is a packet switch A,
B respectively.

The operation when the packet switch A makes a call will be described below.

The packet switch A stores the number of error occurrences in the error counter memory 200 for each of the lines 100, 101, 102 in the multilink, and the line quality value memory 201 stores the line quality value from the number of errors in a fixed time. Remember. Further, the transmission / reception data amount between the multilinks is stored in the transmission / reception data amount counter memory 300, and the throughput value at a fixed time is stored in the throughput value memory 301.

Next, the intra-multilink line throughput memory 302 storing the throughput value for each line in the multilink is compared with the throughput value memory 301 for the entire multilink to select a line combination. The line quality value memory 201 is compared with the line combination, and the combination that seems to have the best transmission efficiency is selected.

Then, the data amount ratio is calculated from the quality and the throughput for the selected combination of lines, the value is stored in the data transmission ratio memory 400, and the control is performed according to the ratio.

For example, at first, as specified, data transmission / reception is performed using all lines in the multilink, the throughput value memory 301 is set to 70 kbps, and the line quality value memory 201 is set to 1 for lines 100: 101: 102. ×
It was set to 10 ⁻⁷ : 1 × 10 ⁻⁵ : 1 × 10 ⁻⁷ . The throughput value memory 302 of each line is the line 100: 10.
64 kbps: 64 kbps: 1 against 1: 102
When it is 9.2 kbps, the optimum value combination selects two lines 100: 102, and the data transmission ratio is from the throughput value memory 302 to the data transmission ratio memory 400 for the lines 100: 101: 102. 10:
Memorize 0: 3.

[0012]

As described above, according to the present invention, the data transmission / reception ratio to the lines in the multilink is automatically selected according to the data amount of the entire multilink and the line quality of each line. It is possible to avoid the delay which is a drawback in the multilink procedure as much as possible. Especially when there is a difference in line quality such as a leased line and public network, the public network is not used as much as possible, and it is used only when the throughput is over. Such,
There is an effect that the multilink procedure can be used in the line configuration in consideration of delay and economy.

[Brief description of drawings]

FIG. 1A is a system configuration diagram of a packet switch for explaining an embodiment of the present invention. (B) is a block diagram showing an embodiment of the present invention.

[Explanation of symbols]

 A, B Packet switch 100, 101, 102 Multi-link intra-line 200 Error counter memory 201 Line quality value memory 300 Transmission / reception data amount counter memory 301 Throughput value memory 302 Multi-link intra-line throughput memory 400 Data transmission ratio memory

Claims (1)

[Claims] 1. A first storage means for storing a transmission / reception data amount between multilinks in a multilink procedure, and a second storage for storing an error count for each line constituting the multilink. Means in a packet switch, and based on the amount of transmitted / received data and the number of errors in a fixed time obtained from the data stored in the first and second storage means, the line configuration in the multilink and the data of each line A multi-link control method characterized by automatically selecting the transmission / reception ratio to the optimum value.