JPS63102429A - Dynamic optimum line selection system by throughput - Google Patents

Abstract

PURPOSE:To attain optimum line selection dynamically by obtaining the margin of a line depending on 1st-3rd counters and selecting a line having the highest margin through a mount line to a destination. CONSTITUTION:The presence of the line is discriminated first. When a line exists, a line selection means 24 extracts a current throughput counter 25 and the value of the throughput 26 and the maximum allowable throughput counter 27 corresponding to the mounted line. Then the line margin is obtained by the value of the counter 25, the throughput 26, the counter 27 and the throughput of the present call. Similar processing is applied in other lines additionally and the margin is obtained. Then the margin of each line is obtained to all package lines of destination and compared and a line having the maximum margin is an object line. When the line is selected, a call request and data transfer are applied via the line.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to line selection in a packet switching system, and particularly to an efficient optimal line selection method.

(Prior art) Conventionally, this type of line selection has been carried out by sequentially selecting the lines using an allotter (sequential line selection method), or by determining the ratio of the number of calls that can be connected to each installed line, and selecting the lines according to this ratio. Line ratio selection methods have been known.

(Problems to be Solved by the Invention) As described above, the line selection method and the line ratio selection method are well known.

The line order selection method is a method in which the installed lines are selected by sliding them depending on the call, so it is suitable for evenly using the lines, but in a system where terminals with different throughputs coexist, the line efficiency is reduced. There is a drawback that variations occur.

Since line ratio selection is a method of selecting lines by determining the line usage ratio (call rate), it is not a dynamic and optimally efficient line selection method in a system where terminals with different throughputs coexist, as described above. There is a drawback.

The purpose of the present invention is to select a line with optimal line efficiency.
In order to do this, the sum of the current throughput of each line, the predetermined throughput of each line, and the predetermined maximum allowable throughput of each line are shown using different counters to eliminate the above disadvantages. The objective is to provide a line selection method with dynamic line efficiency.

(Means for Solving the Problems) The dynamic optimal line selection method based on throughput according to the present invention is configured to include first to third counters and line selection means.

The first counter is for indicating the sum of current loops of calls multiplexed on the lines of the packet switching system.

The second counter is for indicating line throughput.

The third counter is for indicating the maximum allowable throughput of the line.

The line selection means is for dynamically selecting the optimum line according to the relationship between the values of the first to third counters.

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

FIG. 1 is a block 1 diagram showing an embodiment of a system for realizing a dynamic optimal line selection method according to the present invention. In FIG. 1, 1 and 2 are packet switches, 3 is a relay line, 4 is a packet terminal, and 5 is a non-packet terminal.

FIG. 2 is a block diagram showing the flow up to line selection and the components of the present invention. In FIG. 2, 21 is packet analysis, 22 is lessee analysis, 23'-1 data transfer, 24
is a line selection means, 25 is a current throughput counter, 26 is a line throughput, and 27 is a line permissible maximum throughput.

FIG. 3 is a flowchart showing the flow of 6tq according to the embodiment of the present invention.

The present invention will be described in detail below with reference to FIGS. 2 and 3.

In FIG. 2, when a call request (CR) arrives from a terminal, packet analysis of the call request packet is performed in packet exchanges 1 and 2, and a packet level service analysis is performed. If the packet analysis results are good, then the destination is determined by numerical analysis of the destination address. A line will be selected from this destination. In the line selection means 24, a current throughput counter (5icrt
), the line throughput (5ispt), and the maximum allowable line throughput (5innax').

Next, the detailed flow will be explained according to the flowchart of FIG.

First, in step 31, it is determined whether there is a line. If the line does not exist, the process exits the line selection means 24 in step 38 and a disconnection process is executed.

If the line exists, the current throughput counter (5icrt) of the υ-implemented line is retrieved in step 32. Next, in step 33ζ, the throughput value (5ispt) corresponding to the installed line and the value of the maximum allowable throughput counter (Simax) are extracted. Step 32
and the current throughput counter (5icrt) obtained in step 33, the throughput value corresponding to the installed line (5iapt), the maximum allowable throughput counter (Simax), and the throughput value (5icrt) of the current call.
call), the line margin (5
irst) is determined by the following formula.

1spt In addition, step 35 determines whether there is another line.
If there is another line, the same process as above is performed at step 32, and the margin of the line (5ir
st) is obtained. Therefore, the process in step 32 is executed for all the installed lines to the destination, and the margin (5irst) of each line is determined.

Next, the margins of each line are compared, and in step 36, the line with the largest margin becomes the desired line. In order to select the next line, the throughput counter of the selected line is updated according to step 3. Once a line is selected, call requests and data will be transferred via the line.

(Effects of the Invention) As explained above, the present invention provides a current throughput counter (5ict''t), a line throughput counter (Sisp
t), and maximum allowable line throughput) (Si-max
) to find the line margin (5irst) and select the line with the highest margin among the installed lines to the destination, which has the effect of dynamically selecting the optimal line.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a system for realizing a dynamic optimum line selection method using a throughput according to the present invention. FIG. 2 is a block diagram showing the flow and components up to line selection according to the present invention. FIG. 3 is a flowchart showing the logic flow of the embodiment shown in FIG. 1.2---Packet switch 3...Four relay lines...Packet terminal 5...Non-packet terminal 21...Packet analysis 22...Numeric analysis 23...φDeme transfer 24...Line Selection means 2S...Current throughput counter 26, Φ, line throughput

Claims (1)

[Claims] a first counter for indicating the sum of current loops of calls multiplexed on a line of the packet switching system; a second counter for indicating line throughput; and a third counter for indicating the maximum allowable throughput of the line. counter and
1. A dynamic optimum line selection system based on throughput, comprising a line selection means for dynamically selecting an optimum line according to the relationship between the values of the first to third counters.