JPS6169238A - Call number adding system - Google Patents

Abstract

PURPOSE:To equalize the load for each inter-office junction line with a packet exchange by totalizing the number of transmission packets for each call number and giving the number of the minimum totalized value to a new call. CONSTITUTION:A call control circuit 15' actuates a call number selection circuit 16 to give numbers to calls. A packet number totalizer circuit 17 totalizes the number of packets sent to an inter-office junction line 3 via a packet control circuit 12, a circuit selection circuit 13 and a transmission circuit 14 for each call number after a terminal circuit 2 reaches a reception circuit 11. A call number selection circuit 16 refers to the number of packets totalized by the circuit 17 for each call number to select a call number of the minimum number of packets and informs it to the circuit 15'. Then the circuit 15' gives the call number sent from the circuit 16 to a call which is newly produced. In other words, a call number having the minimum number of packets is given to the new call. This can equalize the number of packets which are carried for each call number.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a call number assignment system in a packet switch.

Packets sent by a call originating from a terminal accommodated in a packet switching network are transmitted via the packet switching equipment constituting the packet switching network and the interoffice trunk line connecting the bucket/node switching equipment.

It is desirable that the number of packets carried via the inter-office trunk lines, that is, the load, be as equal as possible.

In a packet switch, a call number corresponding to an inter-office trunk line is provided, and the call number is assigned to each call that occurs, and the bucket carried by each call is assigned to the station corresponding to the given call number. A method is adopted in which the signals are sent to intermediate trunk lines. Therefore, call numbers must be assigned in such a way that the loads on trunk lines between offices are equalized.

[Conventional technology]

FIG. 2 is a diagram showing an example of a conventional call number assignment system. In FIG. 2, a receiving circuit 11, a packet control circuit 1
2. The packet switch 1, which is composed of a line selection circuit 13, a transmission circuit 14, and a call control circuit 15, has a terminal line 2.
and inter-office I! Line 3 is accommodated. Call control circuit 1
5 prepares a series of predetermined types of call numbers, and each time a call occurs on the terminal line 2, a call number is assigned cyclically.

[Problem that the invention seeks to solve]

As is clear from the above description, in some conventional call number assignment systems, the call control circuit 15 cyclically assigns call numbers to calls that occur. Therefore, when the number of packets carried by each call is approximately equal, it is possible to equalize the loads on the inter-office trunk lines 3 by using a conventional call number assignment method.

However, since the number of packets carried by each call is generally not necessarily equalized, there is a risk that the loads on the inter-office trunk lines 3 may not be equalized.

[Means for solving problems]

The problem is that a call number is assigned to each call that occurs, and the packets carried by each call are sent between stations corresponding to the call number.
This problem is solved by the present invention, which is characterized in that, in a packet switching device that sends data to a line, the number of packets sent out for each call number is totaled, and the call number with the smallest total value is assigned to a newly generated call.

[Effect]

That is, according to the present invention, the call number assigned to a newly generated call is the call number with the least number of calls.
is given, the number of packets for each call number and, by extension, the load on the trunk lines between each station are equalized.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing a call number assignment system according to an embodiment of the present invention. Note that the same reference numerals indicate the same objects throughout the figures. In FIG. 1, the packet switch 1 includes a receiving circuit 11, a packet control circuit 12, a line selection circuit 13, a transmitting circuit 14, a call control circuit 15°, a call number selection circuit 16, a packet number aggregation circuit 17, and a timing circuit 1
8 is provided.

In FIG. 1, the call control circuit 15'' activates the call number selection circuit 16 when assigning a call number to the generated call.On the other hand, the packet number aggregation circuit 17 selects whether the terminal line 2 or the receiving circuit 1
1, the packet control circuit 12 and the line selection circuit 13
The number of packets sent to the interoffice trunk line 3 via the transmitting circuit 14 is tallied for each call number. The call number selection circuit 16 refers to the number of packets for each call number that has been totaled by the packet number totaling circuit 17, selects the call number with the smallest total result, and notifies the call control circuit 15°. The call control circuit 15' assigns the call number transmitted from the call number selection circuit 16 to the newly generated call. Note that the timing circuit 18
Initializes the packet number counting circuit 17 every predetermined period, and resets the result of counting the number of packets for each call number.

As is clear from the above explanation, according to the present embodiment, the call number assigned to a newly generated call is the call number with a small number of packets currently being carried, so the number of packets carried for each call number is The total number of packets transmitted is equalized, and in turn, the load on each inter-office trunk line 3 is equalized.

It should be noted that FIG. 1 is only one embodiment of the present invention, and for example, the configuration inside the packet switch 1 is not limited to that shown in the figure, and many other modifications may be considered, but any The effect of the present invention does not change even in this case.

〔Effect of the invention〕

As described above, according to the present invention, in the packet switch,
The load on each inter-office trunk line is equalized, and the communication rate of the packet switching network is improved.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a call number assignment force feeling according to an embodiment of the present invention, and FIG. 2 is a diagram showing an example of a conventional call number assignment system. In the figure, 1 is a packet switch, 2 is a terminal line, 3 is an interoffice trunk line, 11 is a reception circuit, 12 is a packet control circuit, 13 is a line selection circuit, 14 is a transmission circuit, 15 and 1
5' is a call control circuit, 16 is a call number selection circuit, 17 is a packet number counting circuit, and 18 is a timing circuit.

Claims (1)

[Claims] In a packet switch that assigns a call number to each call that occurs, and sends the packets carried by each call to the interoffice trunk line corresponding to the call number, the number of packets sent for each call number is totaled, and the total value is calculated. A call number assignment method characterized by assigning a call number with the smallest number to a newly generated call.