Packet communication system

[Detailed Description of the Invention]

[Industrial Application] The present invention relates to the communication method in a packet exchange network. [Description of the Prior Art] In packet switching, since the longer one becomes small in a header overhead, the data length of PAKESO I□ is conventionally efficient. However, character in which time permeability is high, namely, must guarantee the generating time interval of information like a sound, And when real-time nature packet-izes the information on the call source in which the delay during transmission and reception has highly the character which needs to be small and sends it, With the long bucket, delay PD of buffering for packet creation was very large, and it had become a problem as a cause by which communication quality worsens compared with a line switching. In order to packet-ize the information which occurs continuously, it is necessary to buffer the information until it becomes PAKESO 1-length. As shown in Drawing 5, generally Packetsotdek length is proportional to packet creation delay PD. Although there is this method of carrying out a delay PD light generating pair, and making delay PD of packet creation small using a short packet, If a short packet is used, for a header overhead, packet-ized efficiency (data length/(header length child data length)) will fall, and traffic will also increase, As a result, the operating efficiency or the through punts of the network resource, such as a switchboard and a transmission way, fell, and there was a problem that queuing delay will increase. It is in the object of the present invention providing the Bukesso l-communication method for making the fault of such a conventional method remove, and making delay PD of packet creation small, and using a network resource efficiently. The packet transmission system of the useless means] present invention which solves C problem, In a terminal, the information which occurs continuously is divided into a block, and it is considered as a packet, sends out to a network, and sets inside a network, As opposed to two or more packets of the same address accumulated in the same Hasofa by queuing of the switchboard or the transmission way, It is characterized by connecting a packet by transposing a plurality of headers of these packets to one header, and connecting two or more data of these packets according to a generation order to make one data. [Function] The principle of the present invention is shown in Drawing 1. In the present invention, as shown in Drawing 1, information 101 is transmitted to network 104 from terminal 103 by short packet 102. When a plurality of packets which network load is high, and queuing occurred with resource 105 of network 104 inside, and were continuously packet-ized at terminal 103 are simultaneously accumulated by waiting Hasofa for processing, these two or more packets are connected. An example in case short Bukesso t and p, 201 and short PAKESO P, and +202 which are continuously generated with terminal 103 are connected and it becomes packet 203 is shown in Drawing 2. A packet format shall comprise a header containing an address (LCN) and a cyclic redundancy code (CRC) and data. Short bucket 201 comprises the header and data a which consist of LCNa and CRCa, and short packet 202 comprises the header and data b which consist of LCNa and CRCa. Both the address of 202 is the same as short PAKESO l-201 at L CN a, and - Noda is transposed to short Bakeno 1~201 and that of 202 by one header when connecting. At this time, it is referred to as a thing, i.e., LCNa, with same LCN of short packet 201,202 before connection, and packet 203 after connection, and CRC re-calculates and is taken as CRCab. On the other hand, data a of short bucket 201 and data b of short packet 202 are connected according to a generation order, and let them be one data. Packet 203 of connection formant like illustration is constituted by the above connection. According to the packet transmission system of the present invention, at a terminal, in order to transmit by a short packet, packet-ized delay PD proportional to packet length becomes very short. Since a header is shared, the overhead of a header is reduced and packet-ized efficiency is raised in connection of the packet in the inside of a network, and it makes it possible to lower traffic. Since recombination to a long packet is performed by connection of a packet between queuing of the waiting for processing, the short packet can create a long packet without packet-ized delay PD for creating a long bucket at a terminal by it. [Example] Next, the example of the present invention is described. At a terminal, it divides into a packet short [ Is the information which occurs continuously made? ], and sends out to a network. If a 64k bps PCM audio signal (8kHz sampling 8bit quantization) is made into sources of information using packet Formats 1- as shown in Drawing 2, the shortest packet length will be data 1 Hyde + Hedda 2 Hyde. As shown in Drawing 3, this 3 Hyde's packet 300 is accumulated in LCN Hasofa 303 which changes to every [ of a packet ] address (LCN) with demultiplexers (DEMUX) 302 in switchboard 301 in a network, and serves as waiting for processing. It is connected with bucket connector 304 and the packets 305 and 306 of the waiting for processing with same LCN turn into packet 307. I and the connection packet accumulated for every CN are read from LCN Hasofa 303 according to an order of processing, and after being multiplexed by multiplexer (MUX) 30B, exchange processing of it is carried out with switch 309. Drawing 4 is a figure showing an example of correspondence with the short packet continuously sent from the terminal, and the packet which was connected in the switchboard and multiplexed. short bucket 401 -- header HA data D -- coming out, short PAKESO l-402 are header H9 and D data, header HX, a data D arm, and short PAKESO day 04 of short packet 403 are header Hbeta and data Dbeta, and short packet 405 comprises header HB and data DB, respectively. The address of headers H7 and HB is the same, and the address of H headers and Hbeta is taken as the same thing. Therefore, it is accumulated in 1. with short packet 401, 405, short PAKENO I-402,404, and respectively separate short bucket 403, and CN Hasofa, and becomes the waiting for processing. Connection is performed between queuing of the waiting for this processing. That is, it is connected, and it becomes packet 406 of header HAR and data DA and DB, short buckets 402 and 404 are connected, and short buckets 401 and 405 turn into packet 407 of header Hαβ, D data, and Dbeta. A packet can begin to be read from LCN Hasofa according to an order of processing, by a multiplexer, is multiplexed in order of PAKESO 406.407.403, and is outputted. The present invention explains an example of delay PD of packet-izing shortened about the case where a sound is assumed to be sources of information. Although 16 mm of the packet creation delay PD was sha when the generating speed of information was 64k bps and the packet whose packet length is 128 bytes was created with the conventional method, When 8 bytes of short packet was created by the present invention, the packet creation delay PD was 1 millisecond, and when 1 byte of short packet was created, the packet creation delay PD was 0.125 millisecond. Thus, the packet length of the sound whose packet data length was formerly about 100 bytes can be shortened to several 1-/10~number 1 / 100 about packet creation delay PD by making it the short packet whose packet data length is about several bytes. When short PAKESO I'P h and Pk+I are the waiting for processing in the resource inside a network, For example, if two buckets are connected while packet-ized efficiency is 50% in the case of header 8 Hyde and data 8 Hyde, it will become header 8 Hyde and data 16 height, and packet-ized efficiency will rise to 66%. Since two packets of 16 height are connected and it becomes 24 Hyde's one PAKESO l-, traffic decreases by 75%. As mentioned above, connection of a packet raises packet-ized efficiency and decreases traffic. According to the present invention, in a network, A tripic is high, queuing restricts to the resource which happens to some extent, and it connects a packet. That is, it is equivalent to operation of connection performing a kind of flow control of lowering traffic in the high resource of traffic. [Effect of the Invention] As explained above, according to the present invention, the packet transmission system for making delay PD of packet creation small, and using a network resource efficiently can be provided.

[Brief Description of the Drawings]

Drawings 1 are a useless figure which carries out a detailed description of the invention, and Drawing 2, The figure and Drawing 5 showing an example of multiplexing of the packet with which the figure for the figure and Drawing 3 showing an example of connection of a packet to illustrate one example of the present invention and Drawing 4 were connected are a figure showing the packet creation time delay in a packet exchange system. 101 ...... Information 102, 300,307 .. Packet 103 ...... Terminal 104 ...... Network 105 ...... Network Resource 302 ...... Demultiplexer 303 .. and .... LCN Buffer 304 ...... Packet Connector 308 ...... Multiplexer 309 ...... Switch