JP2019193129A5

JP2019193129A5 -

Info

Publication number: JP2019193129A5
Application number: JP2018084774A
Authority: JP
Filing date: 2018-04-26
Publication date: 2020-12-24

Description

また、主記憶装置２０２は、情報として、フロー情報（図５参照）をフロー情報保存部２１６に格納し、学習デバイスリスト（図６参照）を学習デバイスリスト保存部２１７に格納し、学習用データを学習用データ保存部２１８に格納し、共通辞書（図７参照）を共通辞書保存部２１９に格納する。 Further, the main storage device 202 stores the flow information (see FIG. 5) as information in the flow information storage unit 216, and stores the learning device list (see FIG. 6) in the learning device list storage unit 217, and is used for learning data. Is stored in the learning data storage unit 218, and the common dictionary (see FIG. 7) is stored in the common dictionary storage unit 219.

共通辞書７００は、データ転送装置１１０によって圧縮される通信で共通して利用される圧縮辞書であって、共通辞書学習部（共通辞書学習プログラム）２１１による学習期間中、または運用中に作成され、また、更新され、事前に送受信側に展開される。また、共通辞書７００は、通信データの圧縮時・展開時にマージされる。その詳細は、後述するが、図７（Ａ）に示すとおりである。 Common dictionary 700 is created a pressure Chijimiji document that is commonly utilized in a communication that is compressed by the data transfer device 110, during the learning period by the common dictionary learning unit (common dictionary learning program) 211, or during operation It is also updated and deployed to the sending and receiving side in advance. Further, the common dictionary 700 is merged when the communication data is compressed and decompressed. The details will be described later, but it is as shown in FIG. 7 (A).

共通辞書学習部２１１は、端末１００−１、１００−２の通信先デバイスの通信データから学習用データを保存する学習用データ保存部２１８から学習用データ（生データ）を取得し、当該学習用データをもとに共通辞書７００を作成し、共通辞書保存部２１９に保存する共通辞書学習機能を実行するものである。その詳細は、後述する。 The common dictionary learning unit 211 acquires learning data (raw data) from the learning data storage unit 218 that stores learning data from the communication data of the communication destination devices of the terminals 100-1 and 100-2, and for the learning. The common dictionary learning function of creating a common dictionary 700 based on the data and storing it in the common dictionary storage unit 219 is executed. The details will be described later.

図７（Ａ）及び（Ｂ）は、共通辞書保存部２１９の共通辞書７００及び一時辞書７００’の一例を示す図である。 7 (A) and 7 (B) are diagrams showing an example of the common dictionary 700 and the temporary dictionary 700'of the common dictionary storage unit 219.

共通辞書７００及び一時辞書７００’は、通信データを圧縮するための情報を格納するエントリを含む。
共通辞書７００のエントリは、符号ｋｅｙ７０１と対応する記号列Ｖａｌｕｅ７０２、統計値をカウントし、共通辞書７００に記憶する統計カウンタ７０３から構成される。一時辞書７００’のエントリは、符号ｋｅｙ７０１’と対応する記号列Ｖａｌｕｅ７０２’から構成される。 The common dictionary 700 and the temporary dictionary 700'include an entry for storing information for compressing communication data.
The entry of the common dictionary 700 is composed of a symbol string Value 702 corresponding to the code key 701, and a statistical counter 703 that counts statistical values and stores them in the common dictionary 700 . The entry of the temporary dictionary 700'composed of the code key701'and the corresponding symbol string Value702'.

Claims

A common dictionary learning unit that builds a common dictionary for compression from communication data during the learning period of the communication device,
An encoding unit that compresses the data to be transmitted while adding an entry to the common dictionary based on the data to be transmitted to the network.
A temporary dictionary included in the data received via the network, a decoding unit that decodes the received data based on the compressed data, and a decoding unit.
A transfer control unit that transmits the entry added to the common dictionary as a temporary dictionary together with the compressed data to the network, and receives the compressed data including the temporary dictionary received via the network.
A data transfer device comprising.

In the data transfer device according to claim 1,
It also has a learning data selection unit,
The learning data selection unit
For each communication destination device, the statistical values of communication parameters are stored in the learning device list storage unit.
If the communication destination device the difference between those該統meter value is less than the predetermined value is a plurality, the data transfer apparatus characterized by excluding a part of the communication data from the communication data for learning of the communication destination device ..

A data transfer device that transfers communication data between multiple communication destination devices via a network.
It has a common dictionary learning unit, encoding unit, decoding unit, and transfer control unit.
The common dictionary learning unit
A common dictionary containing information for compressing the communication data is constructed from a copy of the communication data in the learning period received via the transfer control unit.
The coding unit is
The device information and communication data of the communication destination device are received from the transfer control unit, an entry is added to the common dictionary based on the communication data, and the communication data transmitted from the communication destination device is compressed.
The decoding unit
The communication data compressed by the coding unit is received, and the compressed data is decoded based on the temporary dictionary included in the compressed communication data.
The transfer control unit
The entry added to the common dictionary is used as a temporary dictionary and transmitted to the communication destination device via the network together with the compressed data encoded by the coding unit.
Further, a data transfer device characterized in that the uncompressed data decoded by the decoding unit is received via the network and the compressed data including the temporary dictionary is received.

In the data transfer device according to claim 1 or 3.
The common dictionary includes an entry for storing information for compressing the communication data, and the entry is information for compressing the communication data including a code and a symbol string.
When encoding the communication data, the coding unit converts the symbol string into the code when the communication data contains a symbol string.
The decoding unit is a data transfer device, characterized in that, when decoding the compressed data, the code is restored to the symbol string.

In the data transfer device according to claim 1 or 3.
The common dictionary learning unit
When constructing the common dictionary
Storing the statistical value of the communication parameter for each communication destination device,
If the statistics value is less than a predetermined value,
A data transfer device characterized in that a part of communication data among the communication destination devices is excluded from learning data.

The claim 1 or between the first network and the second network providing the data transfer apparatus according to 3, the network system allowing the transfer of communication data between the plurality of terminals.

A common dictionary learning step that builds a common dictionary for compression from communication data during the learning period of the communication destination device,
A coding step that compresses the data to be transmitted while adding an entry to the common dictionary based on the data to be transmitted to the network.
A decoding step that decodes the received data based on the temporary dictionary included in the data received via the network and the compressed data, and
A transfer control step of transmitting the entry added to the common dictionary as a temporary dictionary together with the compressed data to the network, and receiving the compressed data including the temporary dictionary received via the network.
A data transfer method characterized by comprising.

A data transfer method that transfers communication data between multiple communication destination devices.
A common dictionary learning step of constructing a common dictionary containing information for compressing the communication data from a copy of the communication data received via the transfer control unit during the learning period, and
A coding step of receiving device information and communication data of a communication destination device from the transfer control unit, adding an entry to the common dictionary based on the communication data, and compressing the communication data transmitted from the communication destination device. ,
A decoding step that receives the communication data compressed in the coding step and decodes the compressed data based on the temporary dictionary included in the compressed communication data.
The entry added to the common dictionary as a temporary dictionary, together with the compressed data encoded in the encoding step, and transmitted to the communication destination device, the non-compressed data decrypted by the decoding step, Ne A data transfer method comprising: a transfer control step of receiving the compressed data including the temporary dictionary received via a network.

In the data transfer method according to claim 7 or 8.
The common dictionary includes an entry for storing information for compressing the communication data, and the entry consists of a code and a symbol string.
When the communication data is encoded, the coding step converts the symbol string into the code when the communication data contains a symbol string.
The decoding step is a data transfer method, characterized in that, when decoding the compressed communication data, the code is restored to the symbol string.

In the data transfer method according to claim 7 or 8.
The common dictionary learning step is
When constructing the common dictionary
A step of storing statistical values of communication parameters for each communication destination device,
If the statistics value is less than a predetermined value, the data transfer method which comprises a step of excluding a part of the communication data from the learning data of the communication destination device.