KR960009504A - Asynchronous Transfer Packet Switcher for Multi-Channel by Indirect Header Method - Google Patents

Abstract

The present invention relates to an Asynchronous Transfer Mode (ATM) packet switch for multi-channels by an indirect header method. This is a packet exchanger for multi-channel asynchronous transmission using an indirect header method that enables asynchronous packet communication in a network. The packet exchange is performed by converting voice and digital data into 53 bytes (5 byte header part and 48 byte information). Division) to provide a switch that enables communication in real time by routing (ROUTING) by the indirect header (INDIREC HEADER) method, the present invention is largely divided into four parts (power supply unit, subscriber matching unit, Line coupling part, management part), and these four parts are formed by pad and indirect header method. It is configured to transmit mutual information through asynchronous transmission switch that adopts the principle of replacing header at each node, and provides mobile communication and high-speed data communication using asynchronous transmission packet exchanger at low price in a short time. It can work.

Description

Asynchronous Transfer Packet Switcher for Multi-Channel by Indirect Header Method

Since this is an open matter, no full text was included.

1 is an external view of the asynchronous transmission system switch of the present invention;

(B) is a configuration diagram of the entire asynchronous transfer switch of the present invention;

2 is a structural diagram of a telephone subscriber matching unit for matching the switch and the telephone of the present invention;

3 is a structural diagram of a computer subscriber matching unit for matching the switch and the present invention;

4 is a structural diagram of a line matching unit of the asynchronous transmission switch system of the present invention;

Claims (16)

A power supply unit 5 for supplying power required inside the exchanger; A management unit 10 which performs clock supply and system data bus control required in the exchange, and has a fed function to process packets on a network; A line matching unit 15, which serves as an trunk line (providing a trunk channel) for connecting the exchange and the exchange with two wires, and controls an amount of information (bandwidth) used at each exchange; It has protocol conversion function that connects general subscribers to network access and connects and processes each terminal's own protocol and protocol for call setup on asynchronous transmission mode network for communication. It is composed of subscriber matching unit 20 which can process packet and has switch for ATM (ATM SWITCH), and it is characterized in that it consists of asynchronous transmission for multi-channels by indirect header method for call setup and release. Packet Switcher. 2. The line matching unit (15) according to claim 1, wherein the line matching unit (15) comprises: a two-wire line interface (16) which serves to connect between the exchanger and the exchanger (the same exchanger); A two-wire line control (18) for controlling transmission / reception of a package by distinguishing whether information passing through the two-wire line interface (16) is in a reception state or a transmission state; A system bus 17 connected to a motherboard inside the exchanger and receiving information corresponding to each corresponding station and outputting the information to the line matching transmitter 15-2; The packet inputted through the system bus 17 is packed into a packet deassembler 15-2-1 and then stored in the transmission buffer 15-2-2, followed by the two-wire line control 18. The line matching transmitter 15-2 which reads the packet stored in the transmission buffer 15-2-2 (15-2-3) and transmits the packet stored in the transmission buffer 15-2-2 if it is in the transmission state. ; If a packet is input from the two-wire line interface 16, the packet is stored in the reception buffer 15-1-1. If the packet is received under the control of the two-wire line control 18, the packet is switched to the packet switching (PACKET SWITCHING) ( An indirect header method comprising a line matching receiver 15-1 input to a system bus 17 through a packet assembling unit 15-1-3 via 15-1-2). Asynchronous transfer packet switch for multichannel. 3. The packet matching order according to claim 2, wherein the packets stored when the line matching transmitter 15-2 reads out and transmits the packets are sorted according to a priority as shown in the following table. And an outgoing two-wire (WIRE) outgoing multi-channel asynchronous transmission packet switch according to the indirect header method. (However, the packet in the same level applies the principle that the first packet is exited.) The bandwidth control method of claim 2, wherein when a packet enters from the line matching receiving unit 15-1 from outside to inside, a bandwidth control scheme for controlling and packet controlling the amount of information (bandwidth) used by the packets generated at each subscriber matching unit is performed. A first step S1 for requesting a new bandwidth when a setup request comes in; A second step (S2) of reading the sum of the existing required bandwidths from the CALL INFORMATION TABLE (CIT) table and comparing the result with the maximum allowable bandwidth of the transmission path and outputting the allowable bandwidth; A third step (S3) of comparing the new bandwidth request value with an allowable bandwidth value; A fourth step (S4) of discarding the packet if the new bandwidth request value is greater than the allowable bandwidth among the comparison results; If the new bandwidth request value is smaller than the allowable bandwidth, the call information table is updated with reference to the call request (arc) packet, followed by the fifth step (S5) of appropriately processing the packet and transmitting it to the next node. An indirect header method, multi-channel asynchronous transmission packet switch, characterized in that the. The basic configuration of the use packet according to claim 2, wherein the header of the indirect header method is replaced when the line matching receiving unit 15-1 provides a communication line for a call requiring communication. An asynchronous transmission method packet switch for multi-channel transmission by the indirect header method, characterized in that the header field and the remaining 48-byte information field. The method of claim 5, wherein the first byte of the five bytes of the header field in the packet for a call having a basic structure of the packet consists of a packet check code, and the second, third, and fourth bytes comprise a header for the communication packet. Multi-channel asynchronous transmission packet switch with an indirect header method. 7. The method of claim 6, wherein the header of the call packet is changed in the header replacement by the indirect header method. The header part of the communication packet of the communication packet part is previously read by the call connection procedure by reading the primary call information table. After reading the virtual virtual channel (nVC) data, it proceeds back to the secondary call information table based on the data read above, and changes the header part by reading the information and restoring the existing information as the currently read information. Multi-channel asynchronous transmission packet switch with an indirect header method. The system bus of claim 1, wherein the subscriber matching unit 20 applies a protocol applied to match a dual phone multi-frequency telephone (DIMF), which is a commercial analog telephone, in a packet network. (17); A switch 32 for asynchronous transmission; A dual phone multi-frequency phone matching unit 31 used for matching with the dual phone multi-frequency phone 30; A dual-channel multi-frequency telephone (DTMF) subscriber matching unit comprising a dual-phone multi-frequency telephone (32) used by a user, the asynchronous transmission method packet switch for multi-channel transmission by the indirect header method. The system according to claim 1, wherein the protocol applied by the subscriber matching unit (20) to match the computer in the packet network comprises: a system bus (17) connected to a motherboard (MOTHER BOARD) in the exchange; A switch 32 for asynchronous transmission; A computer matching section 42 used to mate with the computer 41; A multi-channel asynchronous transmission packet switch according to the indirect header method, characterized by applying a computer subscriber matching unit comprising a computer (40) used by a user. The method of claim 1, wherein the packet transmits the packet from the transmitting side to the network to determine the location of the receiving side, and the subscriber matching unit writes the receiving side number in its own packet when a call procedure request of the terminal connected to the subscriber is matched. An indirect header type packet switch for multi-channel transmission using an indirect header method characterized by applying a FLOOD PACKET to be transmitted afterwards. The Float-Arc packet of claim 1, wherein the packet is used to inform the transmitting subscriber matching unit of its status (BUSY / IDLE) and its location when the corresponding address among the Flode packets sent by the other party matches. A multi-channel asynchronous transmission packet switch according to the indirect header method, characterized by applying (FLOOD ACK PACKET). The indirect header method of claim 1, wherein the packet is applied to a call request packet transmitted to form a forward virtual channel in subscriber matching receiving the float arc packet. Asynchronous transfer packet switch for multichannel. The method of claim 1, wherein the packet is applied to a call request arc packet (CALL REQUEST ACK PACKET) packet transmitted by the subscriber matching unit for receiving the call request arc packet to form a backward (BACK WARD) virtual channel. An asynchronous transmission packet switch for multi-channels using an indirect header method. 2. The packet switch of claim 1, wherein the packet applies a traffic packet used to transmit user information after a virtual channel is formed. The method of claim 1, wherein the packet is a song. An indirect header-type packet switch for multi-channel transmission using an indirect header method, characterized by applying a release packet (RELEASE PACKET) used to release a virtual channel after completing exchange of user information between receivers. The method of claim 1, wherein the basic procedure for establishing and releasing a call is performed by applying the packets corresponding to 10 to 15. First, an INTERFACE MODULE (IM) 20 is transmitted from a transmitting terminal. Informing the receiving party number, the subscriber matching unit 20 creates a flood packet F using the receiving party number at a predetermined position and transmits it to the network, and each node receiving the flood packet receives the received link number. Transmitting the first to all nodes recorded in the predetermined field (T1); Each subscriber matching unit 20 having received the flood packet transmitted in the first step T1 compares the receiver number with its own terminal number and transmits a float arc signal (F. ACK) to the transmitter if it is equal. Step 2 (T2); The subscriber matching unit 20 that receives the float arc signal (F. ACK) reads the state (BUSY / IDLE) of the counterpart subscriber matching unit 20 and performs further call establishment procedure in case of a call (BUSY). It stops and transmits a busy signal to the terminal. If not, the call request packet (CALL REQUEST PACKET: CR) is transmitted to form a forward virtual channel, and the network receives the call information table (CIT). A third step T3 for creating and transmitting to the next node; A fourth step (T4) of transmitting a call request arc signal (CALL REQUEST ACK PACKET: CR. ACK) back to the network to form a reverse virtual channel when the call subscriber matching unit receives the call request packet; A fifth step (T5) of performing a necessary protocol such as mode setting between each subscriber matching unit 20 according to the characteristics of the subscriber matching unit 20 when the virtual channel is established through the fourth step T4; A sixth step T6 of transmitting the traffic packet TP for transmitting user information after the steps T1 to T5 are completed; After the transmission of the user information, each subscriber matching unit 20 transmits a release packet (RELEASE PACKET) to delete the call information table from the network by performing a seventh step (T7) of releasing the virtual channel to operate sequentially. A packet exchanger for multichannel asynchronous transmissions, characterized by an indirect header method. ※ Note: The disclosure is based on the initial application.