JP2730626B2 - Transmission data division processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] The present invention relates to a transmission data division processing method for dividing the size of a segment transmitted to a plurality of physical lines constituting a multilink, and dynamically changing the size of a segment to be transmitted to a line. For the purpose of optimizing, increasing the line utilization rate and shortening the data transfer time, the division size storage unit for storing the size information of the segment to be transmitted and the transmission data are stored in the division size storage unit. A segment division unit that divides data based on the size information, a division size check table that stores the data transfer amount of each of a plurality of physical lines forming a multilink, and a division unit that adds or disconnects a line. Referring to the size check table, among the currently available physical lines, the one with the smallest A segment size updating unit for updating the storage unit, wherein the segment dividing unit is configured to perform segment addition based on the size information stored in the division size storage unit updated by the division size updating unit in response to addition / separation of rotation. The transmission data is divided into segments of a predetermined size, and the data is transmitted to a plurality of physical lines constituting a multilink. [Industrial Application Field] The present invention relates to a transmission data division processing method for dividing the size of a segment transmitted to a plurality of physical lines constituting a multilink. [Problems to be Solved by Conventional Technique and Invention] Conventionally, when data transferred from a host to an NCP (communication control device) is transmitted to a physical line constituting a multilink, transmission is performed within the NCP. If the data is divided and transmitted in segments of a predetermined size, the data can be transmitted continuously on the line, and the utilization rate of the line can be improved. However, since the size of the segment was fixed, depending on the size of the transfer data transferred from the host, or whether the line was added or disconnected (ACT / INACT),
There is a problem that an unusable line is generated among the lines, the utilization rate of the line is not increased, and the effect of multi-linking a plurality of lines cannot be exhibited. Specifically,
There are a slow line and a fast line.For example, if the data is divided into segments each having a size corresponding to the average data transfer rate of both, when only the slowest line is empty, it is assigned to the slowest line and transmission is started. In this case, the transmission is delayed, and even if a fast line is available immediately after this slowest line starts transmitting a segment, the segment cannot be assigned to the fast line and the fast line idles. As a result, there is a problem that the overall use efficiency of the plurality of lines is reduced. SUMMARY OF THE INVENTION An object of the present invention is to dynamically optimize the size of a segment to be transmitted to a line, increase the line usage rate, and reduce the data transfer time. [Means for Solving the Problem] Means for solving the problem will be described with reference to FIG. In FIG. 1, a segment dividing section 2 divides transfer data transferred from a host. The disassembly size storage unit 3 stores segment size information to be transmitted to the line. The division size update unit 4 refers to the division size check table 5 and updates the size information stored in the division size storage unit 3 corresponding to the physical line with the smallest data transfer amount among the currently usable physical lines. To be updated. The division size check table 5 stores a data transfer amount of a physical line constituting a multilink and the like. [Operation] According to the present invention, when a line is added / disconnected, the division size updating unit 4 refers to the division size check table 5 and selects the smallest value of the data transfer amount among the physical lines (ACT lines) configuring the multilink. Division size storage unit 3 corresponding to
Is updated, and the segment division unit 2 divides the transfer data transferred from the host into segments based on the size information stored in the division size storage unit 3 and sends the segments to the line. For this reason, it is possible to dynamically optimize the segment size in accordance with the use state of the line, to increase the utilization rate by preventing the line from becoming idle, and to shorten the data transfer time. Embodiment Next, the configuration and operation of an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2. FIG. In FIG. 1, an NCP (communication control device) 1 is a BTU, which is a unit for transferring data transferred from a host.
Is a unit of the line transmission data transmitted to the lines 01 to 04 constituting the multilink (piu (segment)).
And transmits the divided piu to the lines 01 to 04. The segment division unit 2 divides transfer data (BTU) transferred from the host into segments each corresponding to the size information stored in the division size storage unit 3. The division size 3 storage unit stores segment size information corresponding to the value of the smallest data transfer amount among the lines 01 to 04, for example, 2400 when the line has the indicated data transfer rate.
/ 8 = 300B / S (byte / second) is stored. The division size updating unit 4 refers to the division size check table 5 every time the line ACT / INACT (addition / disconnection of line), and sets the value to the value with the smallest data transfer amount among the plurality of physical lines constituting the multilink. The size information of the corresponding segment is calculated, and the division size storage unit 3 is updated with the calculated value. The split size check table 5 contains the line ACT / INACT
It stores information such as information and data transfer amount. Next, the operation will be described. In FIG. 1, when the lines 01 to 04 of the data transfer amount in the illustrated state are configured as a multi-link, the division size updating unit 4 determines from the division size check table 5 that the line ID is “0”.
Of "1" to "04", "300B / S" with the smallest data transfer amount is read, and this value is stored in the division size storage unit 3.
Is stored in such a manner as to be updated. As a result, the segment division unit 2 transmits the transfer data (BT) transferred from the host.
U) is divided into segments corresponding to the size information stored in the division size storage unit 3, and the divided segments are used as line transmission data (piu) on lines 01 through 04.
To send to. As described above, at the time of ACT / INACT of a line, it is used by dividing into the size of the segment corresponding to the one with the smallest data transfer amount among the physical lines constituting the multilink and sending out to the line. It is possible to improve the utilization rate by preventing the line from being idle, and to shorten the data transfer time. FIG. 2 shows an example of line transmission data. Since information such as the destination, serial number, and segment size is stored in the first header of this line transmission data, the NCP on the receiving side
Can restore the original data from a plurality of segments based on this. [Effects of the Invention] As described above, according to the present invention, the addition / addition of a line
At the time of disconnection, the line is divided into segment sizes corresponding to the smallest data transfer amount and sent to the line. In addition, the data transfer time can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 shows an example of line transmission data. In the figure, 1 is an NCP (communication control device), 2 is a segment division unit, 3 is a division size storage unit, 4 is a division size update unit, 5
Represents a division size check table.

Claims (1)

(57) [Claims] In a transmission data division processing method of dividing transmission data and transmitting the divided data, a division size storage unit for storing size information of a segment to be transmitted, and transmission data stored in the size information stored in the division size storage unit. Refer to the segment division unit that divides the data based on the data, the division size check table that stores the data transfer amount of each of the multiple physical lines that make up the multilink, and the division size check table that corresponds to the addition or disconnection of the line And a division size updating unit for updating the size information stored in the division size storage unit corresponding to the smallest available physical transmission line among the currently available empty physical lines. Alternatively, the size stored in the division size storage unit updated by the division size update unit in response to separation Dividing the transmission data segmentation unit on the basis of the distribution into a predetermined size of the segment, transmit data division processing method, characterized by being configured to transmit to a plurality of physical lines constituting the multilink.