AU2019100084A4

AU2019100084A4 - System and method for transmitting adaptive text stream data in network environment

Info

Publication number: AU2019100084A4
Application number: AU2019100084A
Authority: AU
Inventors: Hwajong CHAE; Jongho Lee
Original assignee: WISENUT Inc
Current assignee: WISENUT Inc
Priority date: 2018-12-20
Filing date: 2019-01-25
Publication date: 2019-03-07
Anticipated expiration: 2027-01-25
Also published as: KR102123839B1

Abstract

Provided is a device for receiving adaptive text stream data in a network environment. The device includes: a communication unit configured to transmit and receive text data stream; and a control unit including at least one processor and a 5 memory. The control unit receives text data stream through the communication unit, calculates a transmission rate of text data for each time at a predetermined time by using an amount and reception time of the received text data, and determines a compression ratio of text data according to the calculated transmission rate. mm m mm o 0 U mC CH/z 00 >

Description

SYSTEM AND METHOD FOR TRANSMITTING ADAPTIVE TEXT

STREAM DATA IN NETWORK ENVIRONMENT

BACKGROUND [0001] The present invention herein relates to data transmission in a network environment, and more particularly, to techniques for optimizing transmission of text stream data.

[0002] The amount of data in modem society is so enormous that it is called

Big Data Age. Also, systems and services that require real-time processing of data 10 are increasing. In order to transmit and receive such a large amount of data quickly, a network with wide bandwidth and high speed is needed.

[0003] However, the bandwidth of the network is limited and the number of users who need the network is increasing. Therefore, in order to transmit data more efficiently in a situation where the network is divided and used, a method of 15 compressing raw data and transmitting the compressed data in a streaming manner is used.

[0004] By compressing raw data and reducing the amount of data sent, more users may use the network. However, since the transmitting side or the receiving side must perform a coding/decoding process of compressing and decompressing the data, 20 the compression cost is increased. As the compression ratio is increased, the compression cost becomes higher. Therefore, the compression rate cannot be increased due to the compression cost.

[0005] If the network condition is good, it will not take much time to transmit data uncompressed. When the network is not good and uncompressed raw data is 25 transmitted, the waiting time is longer and the network cost is increased accordingly.

2019100084 25 Jan 2019

Such a delay may be a serious problem in a system in which a log or the like is recorded in real time.

[0006] Korean Patent Registration No. 10-0964104, which is one of the prior arts, is a technology for determining data type and characteristics of packet data of a 5 web protocol provided through a wireless network and selectively compressing only data whose compression is valid. However, such prior art has a limitation in determining whether to compress data according to characteristics of data, and may not determine whether to compress data according to network conditions.

[0007] The inventors of the present invention have made efforts to solve the problem of the conventional network data compression method. By reflecting network conditions in highly fluctuating network conditions to adjust the data transmission rate, the present invention has been accomplished on the basis of a lot of efforts to develop a text stream data transmission system and method for minimizing the influence of a network.

SUMMARY [0008] The present invention is to provide an adaptive text stream data transmission system capable of efficiently transmitting data even under any network conditions by adjusting a data compression ratio according to a network condition.

[0009] If the data compression ratio is increased, the transmission cost will be reduced, but the encoding/decoding costs for compression and decompression will increase. Therefore, unconditionally compressing and transmitting data is not the only solution. Therefore, it is another object of the present invention to efficiently use the limited network by adjusting the compression ratio according to the network 25 conditions.

2019100084 25 Jan 2019 [0010] An embodiment of the present invention provides a device for receiving adaptive text stream data in a network environment, the device including: a communication unit configured to transmit and receive text data stream; and a control unit including at least one processor and a memory, wherein the control unit 5 receives text data stream through the communication unit, calculates a transmission rate of text data for each time at a predetermined time by using an amount and reception time of the received text data, and determines a compression ratio of text data according to the calculated transmission rate.

[0011] In an embodiment, the compression ratio of the text data may be inversely proportional to the calculated transmission rate of the text data for each time.

[0012] In an embodiment, the compression ratio of the text data may be determined using a value obtained by averaging the calculated transmission rate of the text data for each time a predetermined number of times.

[0013] In an embodiment, if the calculated transmission rate of the text data for each time is higher than a transmission rate of text data for each previous time, the compression ratio of the text data may be lowered, and if it is lower than the transmission rate of the text data for each previous time, the compression ratio of the text data may be increased.

[0014] In an embodiment of the present invention, provided is an adaptive text stream data transmission method performed by a system including a data providing server and a service providing server, which are connected on a network. The method includes: by the service providing server, receiving text data stream, calculating a transmission rate of text data for each time by using an amount and reception time of the received text data, and determining a compression ratio of text

2019100084 25 Jan 2019 data to be transmitted according to the calculated transmission rate of the text data for each time to transmit the compression ratio to the data providing server; and by the data providing server, compressing text data by the compression ratio of the text data received from the service providing server, and transmitting a stream of the 5 compressed text data to the service providing server through a network.

BRIEF DESCRIPTION OF THE FIGURES [0015] The accompanying drawings are included to provide a further understanding of the present invention, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present invention and, together with the description, serve to explain principles of the present invention. In the drawings:

[0016] FIG. 1 is a schematic structural diagram of an adaptive text data stream transmission system according to a preferred embodiment of the present 15 invention;

[0017] FIG. 2 is a structural diagram of a service server according to a preferred embodiment of the present invention;

[0018] FIG. 3 is a detailed structural diagram of a service server according to a preferred embodiment of the present invention; and [0019] FIG. 4 is a flowchart of a method for transmitting an adaptive text data stream according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION [0020] Below, configurations of the present invention in various embodiments and effects resulting therefrom will be described with reference to the

2019100084 25 Jan 2019 accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present invention.

[0021] FIG. 1 is a schematic structural diagram of an adaptive text data stream transmission system according to a preferred embodiment of the present invention.

[0022] The adaptive text data stream transmission system according to the present invention includes a data providing server 10 and a service providing server 20.

[0023] The data providing server 10 encodes (compresses) text data according to network conditions and transmits the encoded text data to the service providing server 20 in the form of a stream 30.

[0024] If the network condition is always good, the data providing server 10 may transmit text data in the form of raw data without compression. However, since 15 the network capacity is limited and there are many users accessing it at the same time, a good network condition may not be expected all the time. Therefore, the data providing server 10 compresses necessary data and transmits the compressed data.

[0025] The compression ratio is calculated by the ratio between the size before encoding and the size after encoding. As the compression ratio is higher, the 20 size of the data after encoding is reduced. For example, if the compression ratio is 0%, there is no change in the data size even after the encoding. If the compression ratio is 50%, the size of the encoded data is half of the data size before encoding.

[0026] When the data is encoded, the size of the data is reduced, which is advantageous for transmission over the network. However, the transmitting side must 25 encode data and the receiving side must decode data. The encoding/decoding

2019100084 25 Jan 2019 operation requires additional computing power, which means an increase in cost.

Therefore, it is inefficient to always transmit data by encoding.

[0027] The system according to the present invention uses a method of adaptively adjusting the compression ratio of text data in order to save 5 encoding/decoding costs.

[0028] For this, the service providing server 20 of the present invention receives text data, determines a network condition, determines a compression ratio suitable for the network condition, and transmits the compression ratio to the data providing server 10. The data providing server 10 adjusts the compression ratio of 10 the text data according to the received compression ratio, compresses the text data according to the changed data compression ratio, and transmits it to the service providing server 20 in the form of a text data stream 30.

[0029] FIG. 2 is a schematic structural diagram of a service providing server according to the present invention.

[0030] The service providing server 20 of the present invention includes a communication unit 22, a processor unit 24, a memory 26, and a database 28.

[0031] The service providing server 20 accesses the network through the communication unit 22 and receives a text stream from the data providing server 10.

[0032] The memory 26 provides a function of storing a plurality of program modules and data. The plurality of program modules may include an operating system, one or more application programs, other program modules, and so on.

Especially, in the present invention, a computer-readable recording medium of storing computer-executable instructions executable by the processor unit 24 to cause the processor unit 24 to calculate a transmission rate of text data and determine a 25 compression ratio of the text data is included in the memory 26. Such a recording

2019100084 25 Jan 2019 medium may be a hard disk, a removable magnetic disk, a removable optical disk, and other types of computer readable media capable of storing data. Examples include flash memory cards, RAM, and ROM.

[0033] The service providing server 20 may include a database 28 for storing text data. The database 28 may be included in the service providing server 20 or may be included in an external server to access the database 28 through a network.

[0034] FIG. 3 is a diagram illustrating in more detail the functions provided by the service providing server 20 according to the present invention.

[0035] The service providing server 20 receives text data from the data providing server 10 through the communication unit 22.

[0036] The data processing unit 242 of the processor unit 24 decodes the received text data and processes the received text data according to the data processing logic to provide a service.

[0037] The compression ratio calculation unit 244 of the processor unit 24 calculates the optimal compression ratio according to the network condition.

[0038] The compression ratio calculation unit 244 calculates the transmission rate of the text data, that is, the bit rate, based on the amount of received text data and the time taken for transmission. By calculating the cumulative average of the bit rates, it is possible to set a network condition to five steps of very good, good, 20 normal, poor, and very poor and set the compression ratio accordingly. When the network condition is very good, the compression ratio is minimized or uncompressed, and as the network condition worsens, the compression ratio is increased. When the network condition is very poor, the compression ratio is the maximum. That is, the network condition and the compression ratio are in inverse 25 proportion. When network conditions are good, it is possible to decrease a

2019100084 25 Jan 2019 compression ratio to reduce compression costs, and when network conditions are bad, it is possible to increase a compression ratio to reduce the cost of transmission.

[0039] The network condition determination has a problem in that the reflection of the current network condition is delayed when the bit rate is 5 continuously accumulated. Therefore, in another embodiment, a network condition may be determined by averaging only a predetermined time or a predetermined number of times from the present time. For example, the network condition is determined by averaging only the last five bit rates.

[0040] As another embodiment, a method of predicting the next network condition from the past history of the bit rate may be used. For example, if the previous two network conditions change from normal to good, the next network condition is expected to be good or very good and the compression ratio is set to the lowest. Or if the network condition changes from normal to poor, then the next network condition is expected to be very poor and the compression ratio is set to the 15 highest.

[0041] When the compression ratio calculation unit 244 calculates the compression ratio and transmits the calculated compression ratio to the text providing server 10 through the communication unit 22, the text providing server 10 compresses the text data according to the compression ratio and transmits the 20 compressed text data to the service providing server 20 as a stream.

[0042] FIG. 4 is a flowchart of a method for transmitting an adaptive text data stream according to a preferred embodiment of the present invention.

[0043] It is an adaptive text data stream transmission method in a system in which a text providing server compresses text and provides it as a stream to a service 25 providing server.

2019100084 25 Jan 2019 [0044] First, the service providing server receives the text data stream transmitted by the text providing server (S410).

[0045] The service providing server records the amount and time of the received text data, stores the amount and time in the database, and calculates the 5 transmission rate of the text data (S420).

[0046] Since the network condition may be grasped by the bit rate of the text data, the compression ratio of the text data may be selected based on the network condition (S430). As the network condition is better, the compression ratio becomes lower, and as the network condition is worse, the compression ratio becomes higher.

That is, if the network condition is good, the compression ratio is lowered to reduce the compression cost, and if the network condition is poor, by increasing the compression ratio and reducing the amount of text data to be transmitted, network cost may be reduced.

[0047] The selected compression ratio of the text data is transmitted to the text providing server (S440), and the text providing server compresses the text data according to the received compression ratio and transmits the compressed text data to the service providing server.

[0048] Through the above-described adaptive text data stream transmission device and method, by varying the compression ratio according to network 20 conditions, it is possible to smoothly provide services that require real-time text provisioning, as well as to appropriately reduce network costs and compression costs. [0049] The present invention has the effect of reducing the compression cost by adjusting the data compression ratio according to the variation of the network condition.

2019100084 25 Jan 2019 [0050] In addition, it is possible to reduce the network delay by compressing and transmitting the data, and it is possible to minimize the delay of the system requiring real-time log work.

[0051] On the other hand, even if the effects are not explicitly mentioned here, the effects described in the following specification, which are expected by the technical characteristics of the present invention, and the provisional effects thereof are handled as described in the specification of the present invention.

[0052] For reference, an adaptive text data stream transmitting method according to an embodiment of the present invention may be implemented in the 10 form of a program command that may be executed through various computer means and may be recorded in a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. It may be understood that program instructions stored in the medium are specially designed and configured for the present disclosure or are well 15 known to those skilled in computer software and used.

[0053] Examples of computer readable media may include magnetic media such as hard disks, floppy disks, and magnetic tape, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, and a hardware device specifically configured to store and execute program instructions such as 20 ROM, RAM, flash memory, and the like. Examples of program instructions include high-level language code that may be executed by a computer using an interpreter, as well as machine code accords such as those produced by a compiler. The hardware device may be configured to operate as at least one software module to perform operations of the present invention and vice versa.

2019100084 25 Jan 2019 [0054] The protected scope of the present invention is not limited to the description and the expression of the embodiments explicitly described above. It is again added that the protected scope of the present invention is not limited by obvious changes or substitutions in the technical field to which the present invention 5 belongs.

[0055] Although the exemplary embodiments of the present invention have been described, it is understood that the present invention should not be limited to these exemplary embodiments but various changes and modifications may be made by one ordinary skilled in the art within the spirit and scope of the present invention 10 as hereinafter claimed.

Claims

WHAT IS CLAIMED IS:

1. A device for receiving adaptive text stream data in a network environment, the device comprising:

a communication unit configured to transmit and receive text data stream;

5 and a control unit including at least one processor and a memory, wherein the control unit receives text data stream through the communication unit, calculates a transmission rate of text data for each time at a predetermined time by using an amount and reception time of the received text data, 10 and determines a compression ratio of text data according to the calculated transmission rate.
2. The device of claim 1, wherein the compression ratio of the text data is inversely proportional to the calculated transmission rate of the text data for each

15 time.
3. The device of claim 1, wherein the compression ratio of the text data is determined using a value obtained by averaging the calculated transmission rate of the text data for each time a predetermined number of times.
4. The device of claim 1, wherein if the calculated transmission rate of the text data for each time is higher than a transmission rate of text data for each previous time, the compression ratio of the text data is lowered, and if it is lower than the transmission rate of the text data for each previous time, the compression ratio of

25 the text data is increased.

2019100084 25 Jan 2019
5. An adaptive text stream data transmission method performed by a system comprising a data providing server and a service providing server, which are connected on a network, the method comprising:

5 by the service providing server, receiving text data stream, calculating a transmission rate of text data for each time by using an amount and reception time of the received text data, and determining a compression ratio of text data to be transmitted according to the calculated transmission rate of the text data for each time to transmit the compression ratio to the data providing server; and
10 by the data providing server, compressing text data by the compression ratio of the text data received from the service providing server, and transmitting a stream of the compressed text data to the service providing server through a network.