JPS63250945A - Preferential packet control system - Google Patents

Abstract

PURPOSE:To lighten the load of a packet switch system by recording a call control information such as preferential or non-preferential from a call request packet, in every communication line by a receiving part, and registering a following received packet in the register area of a preferential cue or a non-preferential cue, provided in a transmitting part, according to the said recorded information. CONSTITUTION:When the reception controlling means 3a of the receiving part 2a receives the packet from the communication line 1a, in a case that the packet is the call request packet, it investigates the preference request information of the packet, and in the case that a preferential request is set previously, it sets a preferential request display in a call control information recording area 10a, corresponding to the logical channel of the packet, and at the same time, it informs the transmitting part 6i to register the said packet in a preferential cue register area 11i. In the case that the preferential request is not set previously, it informs the transmitting part 6i to register the said packet in the non-preferential cue register area 12i of the transmitting part 6i. When the transmission of one packet is completed, the transmission controlling part 7i of the transmitting part 6i, at first, controls to fetch the packet, registered in the preferential cue register area, and after transmitting all of them, to transmit the packet, registered in the non-preferntial cue register area.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a priority packet system in which a packet switching system distinguishes between priority and non-priority transmission packets and transmits them.

[Conventional technology]

Conventionally, in this type of priority packet control method, a packet switching system inspects all packets to identify priority information indicating the presence or absence of a priority request, and determines priority or non-priority processing. Further, the distinction between priority and non-priority packets was determined in advance as one of the service classes for each terminal from which the packet was sent.

[Problem that the invention seeks to solve]

The conventional priority packet control method described above takes a lot of processing time because the packet switching system spends processing time inspecting all packets to determine whether they are prioritized or not. There was a point where it was impossible to freely set priority or non-priority as needed.

An object of the present invention is to provide a priority packet control method that solves the above problems.

[Means for solving problems]

The priority packet control method of the present invention is a priority packet control method in which a packet switching system distinguishes and transmits transmission packets into t> destinations and non-priority destinations. When a call request packet is received from the communication line, the priority request presence/absence code read from this packet is recorded in the call control information recording area, and when an information packet subsequent to the call request is received, the code is recorded from the call request packet. The packet has a reception control means for reading out the presence/absence code of the priority request from the call control information field "Fjjrm area and notifying the transmitting section, and the transmitting section receives from the receiving section together with the notification of the presence/absence code of the priority request. Packets with priority requests are registered in the priority queue registration area, packets with priority requests are registered in the non-priority queue registration area, and when the registered packets are sent to the communication line, they are registered in the priority queue registration area 3.k. It has a transmission control means for extracting and transmitting the packets registered in the priority queue registration area, and after transmitting all the packets to be registered in the priority queue registration area, transmitting the packets to be registered in the non-priority queue registration area.

〔Example〕

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

FIG. 1 is a block diagram showing one embodiment of the present invention. In FIG. 1, communication lines 1a-n are connected to reception control means 3a-3n of receiving sections 2a-2n. Memory means 4a~
4n is connected to reception control means 3a to 3n. The communication line 51 is connected to the transmission control means 71 of the transmission section 61 . Memory means 81 is connected to transmission control means 71 . The reception control means 3a to 3n and the transmission control means 71 are connected to each other via a system bus 9. The memory units 4a to 4n have call control information recording areas 10a to Ion for each call, which are multiplexed to the communication lines 1a to 1n. The memory unit 81 includes a priority queue registration area 11i for recording control information of a first-in, first-out queue for waiting for processing of packets to be transmitted with priority, and a first-in for waiting for processing of packets other than the above. It has a non-priority queue registration area 12i in which control information for the first queue is recorded.

FIG. 2 is a processing flowchart of a receiving section showing an embodiment of the present invention.

FIG. 3 is a flowchart of a transmitting section showing one embodiment of the present invention.

The operation of the present invention will be briefly described with reference to FIG. 1 with reference to FIGS. 2 and 3 as well as FIG.

First, in FIG. 2, when the reception control means 3a of the reception section 2a receives a packet from the communication line 1a (operation procedure 1), it identifies the packet type. If the packet is a call request packet (operation procedure 2), the reception control means 3a inspects the fl destination request information of the packet (operation procedure 3).
If a priority request is set, a priority request display is set in the call control information recording area 10a corresponding to the logical channel of the harmful packet (operation procedure 11), and the transmitter 61 sends the packet to the priority queue. Register in the registration area 11i (
Operation step 5) Notify to do so.

In operation step 2, if the packet is not a call request packet, the reception control means 3a checks the priority request display in the call control information recording area 10a corresponding to the logical channel of the packet (operation step 6), and issues a priority request. If the display is set, the process continues to operation step 5 in which the transmitter 61 registers the packet in the priority queue registration area 11i. If the priority request display is not set in operation step 6, the reception control means 3a notifies the transmitter 6j to register the packet in the non-priority queue registration area 12i (operation step 7).9 Operation step 3 If a priority request is not set, the process continues to operation step 7 in which the packet is registered in the non-priority queue registration area 12i of the transmitter 61.

In FIG. 3, when the transmission of one packet is completed (operation step 11), the transmission control means 71 of the transmitter 61 checks the priority queue registration area 11i (operation step 12), and if the packet is registered, An operation procedure 13) is performed in which one of the first registered packets is taken out from the priority queue registration area 11i and the packet is sent to the communication line. Operation procedure 1
2, if no packet is registered in the priority queue registration area 11i, the transmission control means 71 registers the non-priority queue 1.
2i (action code +1 [f'f 14)], and if the packet is registered, the first registered packet is taken out from the non-priority queue registration area 12i, and the packet is sent to the line (operation Step 15). Operation procedure 14
If no packet is registered in the non-priority queue registration area 12i, the transmission control means 71 returns to operation step 12 of checking the priority queue registration area 11i again.

〔Effect of the invention〕

Above: (a) As mentioned above, the present invention is a call control information recorder that records priority/non-priority call control information from a call request packet.
An area is provided in the receiving unit for each communication line, and subsequent received packets are registered in the priority queue or non-priority queue registration area provided in the transmitting unit according to the recorded information in the call control information recording area. Packets registered in the queue are sent, and packets other than call request packets do not require priority/non-priority inspection, and are configured to simply read the records in the recording area, allowing only call packets to be examined and prioritized. Packet control can be implemented, the load on the packet switching system can be reduced, and priority or non-priority can be selected for each call.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a processing flowchart of a receiving section showing an embodiment of the present invention,
FIG. 3 is a flowchart of a transmitting section showing one embodiment of the present invention. ] a to 1n, 51... Communication line, 2a to 2n... Receiving unit, 3a to 3n, 71... Control means, 4a to 4n,
81...Memory means, 61...Transmission unit, 9...System bus, 10a1-10nm...Call control information recording area, lli...Priority queue registration area, 12i...
Non-priority queue registration area. Ring 3 diagram σ℃

Claims (1)

[Claims] In a priority packet control method in which the packet switching system distinguishes between priority and non-priority transmission packets and sends them, when a receiving unit arranged corresponding to each logical channel of the communication line receives a call request packet from the communication line. The priority request presence/absence code read from this packet is recorded in the call control information recording area, and when an information packet subsequent to the call request is received, the priority request presence/absence code recorded from the call request packet is recorded in the call control information recording area. It has a reception control means for reading from the area and notifying the transmitting unit, and the transmitting unit registers the packet with the priority request in the priority queue registration area, which the transmitting unit receives from the receiving unit together with the notification of the presence/absence of the priority request. Packets with no priority request are registered in the non-priority queue registration area, and when sending registered packets to the communication line, the packets registered in the priority queue registration area are first extracted and sent, and then sent to the priority queue registration area. A priority packet control method characterized by comprising a transmission control means for transmitting a packet to be registered in the non-priority queue registration area after transmitting all packets to be registered.