JPH04367137A - Multi link procedure control system - Google Patents

Abstract

PURPOSE:To improve the transmission efficiency at all times by automatically setting the multi link window size according to the entire data amount and the line quality of each line and avoiding the delay due to data queuing. CONSTITUTION:A single link control part 110 stores the communication error of each single link 101 to n in an error counter 200. A line quality value memory 302 stores the line quality value generated from the error numbers in the prescribed time in the error counter. An inter multi-link transmitter-receiver data counter 401 of a multi-link control part 400 stores the data amount to be transmitted and received, and the through put value in the prescribed time is stored in a through put value memory 301 of a calling processing part 300. A multi window size decision matrix 303 of the calling processing part collates the data stored in the line quality memory and in the through put value memory so as to set the optimum multi window size.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multilink procedural control system in a packet switch, and more particularly to a multilink procedural control system that automatically sets the intra-multilink window size to an optimal value.

0002

2. Description of the Related Art Conventionally, this type of multilink control estimates the throughput and line quality of each line within a predetermined configuration, and fixes the multilink window size in advance.

0003

[Problem to be Solved by the Invention] In the conventional multilink control method described above, the multilink window size is fixedly set and operated regardless of the actual amount of data transmitted and received through the multilink and the quality of the constituent lines. If the window size is too large, communication time loss will increase if the amount of data is small or if the quality of the line making up the multilink is poor and retransmissions are repeated. On the other hand, if the window size is too small, there is a drawback that the transmission efficiency is extremely reduced.

An object of the present invention is to provide a multilink procedure control system that automatically sets an optimal multilink window size based on the amount of transmitted and received data and the number of error occurrences.

[0005]

[Means for Solving the Problems] The multilink procedure control system of the present invention is based on the international recommendation 2
In the multi-link procedure of the optional function shown in 5, a memory for storing the amount of data sent and received between multi-links and a memory for storing the number of errors for each line making up the multi-link are provided. Automatically sets the multilink window size to the optimal value based on the amount of data sent and received and the number of errors.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing a simple system configuration. The packet switch 10 in FIG. 1 includes a single link control unit 110 that includes an error counter memory 200 for each single line (hereinafter referred to as a single link), and an inter-multilink transmission/reception data counter 401 that stores the amount of data transmitted and received between the multilinks. A call processing unit 300 includes a throughput value memory 301, a line quality value memory 302, and a multilink window size determination matrix 303. The system in FIG. 2 has a single link 1 between packet switches 10-A and 10-B.
01, 102,...n, and packet switch 10-A
, 10-B accommodate terminals 20, respectively.

A single link control unit 110 is provided corresponding to each single link 101, 102, . . . n, and stores communication errors of each line in an error counter memory 200. A line quality value is generated from the number of errors in a certain period of time in the stored error data for each line, and the call processing unit 300 generates a line quality value.
is stored in the line quality value memory 302 of. Further, the amount of data transmitted and received between the multilinks is stored in the multilink transmission and reception data counter 401 of the multilink control unit 400, and the throughput value for a certain period of time is stored in the throughput value memory 301 of the call processing unit 300. The multi-link window size determination matrix 303 of the call processing unit 300 reads the stored line quality values and throughput values from the line quality value memory 302 and throughput value memory 301, respectively, and compares them to determine the optimum multi-link window size. Set.

[0009]

Effects of the Invention As explained above, the present invention can automatically set the multilink window size according to the data amount of the entire multilink and the line quality of each line. It is said that it works to constantly improve transmission efficiency, especially when there is a difference in line quality such as a mixture of leased lines and public networks, or when there is a disparity in the amount of data during the day and night. effective.

[Brief explanation of the drawing]

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

FIG. 2 is a simple system configuration diagram for explaining the present invention.

[Explanation of symbols]

10-A, 10-B Packet switch 20
Terminal 100 Multilinks 101, 102,...n Single link (single line) 200 Error counter 300 Call processing section 301 Throughput value memory 302 Line quality value memory 303 Multilink window size determination matrix 400 Multilink control section

Claims (1)

[Claims] Claim 1: International Recommendation
In the multi-link procedure of the optional function shown in 25, a memory for storing the amount of data sent and received between multi-links and a memory for storing the number of errors for each line making up the multi-link are provided. A multilink procedure control method characterized by automatically setting a multilink window size to an optimal value based on the amount of transmitted/received data and the number of errors.