KR101524467B1 - Terminal device for transferring data to the receiver using multi communication interface and Method for controlling communication of the Terminal device - Google Patents

Terminal device for transferring data to the receiver using multi communication interface and Method for controlling communication of the Terminal device Download PDF

Info

Publication number
KR101524467B1
KR101524467B1 KR1020140075824A KR20140075824A KR101524467B1 KR 101524467 B1 KR101524467 B1 KR 101524467B1 KR 1020140075824 A KR1020140075824 A KR 1020140075824A KR 20140075824 A KR20140075824 A KR 20140075824A KR 101524467 B1 KR101524467 B1 KR 101524467B1
Authority
KR
South Korea
Prior art keywords
communication interface
data packet
communication
transmitted
terminal device
Prior art date
Application number
KR1020140075824A
Other languages
Korean (ko)
Inventor
이재용
오봉환
Original Assignee
연세대학교 산학협력단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 연세대학교 산학협력단 filed Critical 연세대학교 산학협력단
Priority to KR1020140075824A priority Critical patent/KR101524467B1/en
Application granted granted Critical
Publication of KR101524467B1 publication Critical patent/KR101524467B1/en

Links

Images

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

A terminal apparatus for transmitting data to a receiver using a multi-communication interface and a communication control method therefor. A communication control method of a terminal apparatus disclosed in the above publication sequentially transmits a plurality of ordered data packets to a receiving side using a terminal device including a first communication interface and a second communication interface that perform communication according to different wireless communication technologies The method comprising: (a) transmitting a data packet through the first communication interface; Based on the buffer size of the receiving side and the size of the congestion window of the first communication interface when data packets after the data packet transmitted in the step (a) are transmitted to the first communication interface, (B) determining a communication interface to transmit the subsequent data packet of the first communication interface and the second communication interface; And (c) transmitting the subsequent data packet to the determined communication interface.

Description

TECHNICAL FIELD [0001] The present invention relates to a terminal device for transmitting data to a receiving side using a multi-communication interface and a communication control method thereof. [0002]

Embodiments of the present invention relate to a terminal device having a multi-communication interface and a communication control method thereof, and more particularly, to a terminal device having a multi-communication interface, and more particularly, And a communication control method therefor.

As heterogeneous wireless networks are integrated by various integrated networks (NGN, IMS, etc.), interest in communication using terminal devices having two or more communication interfaces is increasing.

In ITU-T SG13 Question 9, requirements, structure, and scenario documents are considered considering two or more communication interfaces (for example, communication interface for 3G, communication interface for LTE, communication interface for WIFI, And the IETF has created the Multiple Interfaces (MIF) Working Group in 2009 and is conducting initial analysis of problems with multiple access communications. In addition, IEEE 802.21 has been working on integrating control signals between multiple communication interfaces and minimizing battery consumption, focusing on the data link layer and the physical layer.

Therefore, if data is transmitted using the multi-interface simultaneously, more bandwidth can be used and another network can be used even if a problem occurs in one network.

However, there is a problem in that performance may be deteriorated due to a difference in performance in the network as the protocol is extended from a protocol using one network to a multi-network

In order to solve the problems of the prior art as described above, the present invention proposes a terminal device capable of efficiently transmitting data to a receiver using a plurality of communication interfaces using different wireless communication technologies and a communication control method thereof .

Other objects of the invention will be apparent to those skilled in the art from the following examples.

According to another aspect of the present invention, there is provided a communication system including a first communication interface and a second communication interface for performing communication in accordance with different wireless communication technologies, A communication control method for sequentially transmitting data packets to a receiving side, the method comprising: (a) transmitting a data packet through the first communication interface; Based on the buffer size of the receiving side and the size of the congestion window of the first communication interface when data packets after the data packet transmitted in the step (a) are transmitted to the first communication interface, (B) determining a communication interface to transmit the subsequent data packet of the first communication interface and the second communication interface; And (c) transmitting the subsequent data packet to the determined communication interface.

The transmission rate of the first communication interface may be faster than the transmission rate of the second communication interface.

When the subsequent data packet to be transmitted according to the size of the congestion window of the first communication interface is stored in the buffer of the receiving side, in the step (b), at least one of the subsequent data packets Determining to transmit the first data packet to the second communication interface, and to transmit the remaining data packet of the following data packets to the first communication interface, and in step (c) And transmit the remaining data packet to the first communication interface.

If the subsequent data packet to be transmitted according to the size of the congestion window of the first communication interface is not stored in the buffer of the receiving side, the step (b) In step (c), all of the subsequent data packets may be transmitted to the first communication interface.

A first communication interface and a second communication interface for performing communication according to different wireless communication technologies; And a control unit for controlling communication of the first communication interface and the second communication interface, wherein the terminal apparatus sequentially transmits a plurality of ordered data packets to a receiving side, Wherein the controller controls to transmit a data packet through a communication interface, wherein the buffer size of the receiving side, and the data packet after the data packet transmitted through the first communication interface are transmitted to the first communication interface, Determining a communication interface through which to transmit the subsequent data packet of the first communication interface and the second communication interface based on the size of the congestion window of the communication interface and controlling the communication interface to transmit the subsequent data packet to the determined communication interface The terminal device is provided with a terminal device.

According to the present invention, there is an advantage that data can be efficiently transmitted to a receiving side by using a plurality of communication interfaces.

1 is a block diagram showing a schematic configuration of a terminal device according to an embodiment of the present invention.
2 is a flowchart showing an overall flow of a communication control method of the terminal device 100 according to an embodiment of the present invention.
3 and 4 are flowcharts showing an example of a communication control method of a terminal apparatus according to an embodiment of the present invention.
5 is a graph illustrating data transmission performance of a terminal according to an exemplary embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a schematic configuration of a terminal device according to an embodiment of the present invention.

Referring to FIG. 1, a terminal device 100 according to an embodiment of the present invention includes a plurality of communication interfaces 110 and a control unit 120. Hereinafter, the function of each component will be described in detail.

The plurality of communication interfaces 110 perform communication according to a predetermined wireless communication technique. Here, the wireless communication technologies by the plurality of communication interfaces 110 are different from each other. That is, a plurality of communication interfaces perform communication with other terminal devices, base stations, and the like according to a multi-interface technique.

As an example, when the terminal device 100 is a smart phone, the plurality of communication interfaces 110 may include a communication interface for 3G, a communication interface for LTE, and a communication interface for WIFI.

The plurality of communication interfaces 110 cooperate with each other to transmit data to the receiving side. That is, when the data to be transmitted to the reception side by the terminal device 100 is divided into packets, each of the plurality of communication interfaces 100 transmits a part of a plurality of data packets constituting the data to the reception side. In this case, a sequence is assigned to a plurality of data packets.

Then, the terminal device 100 sequentially transmits the data packets to which the sequence is assigned. That is, the terminal device 100 transmits the data packet in the order of transmission without arbitrarily changing the order of transmission of the data packet.

For convenience of explanation, it is assumed in FIG. 1 that a plurality of communication interfaces 110 include only a first communication interface 111 and a second communication interface 112. FIG. However, the present invention is not limited thereto.

The control unit 120 controls communication of the plurality of communication interfaces 110, i.e., the first communication interface 111 and the second communication interface 112. [ That is, the control unit 120 manages all the procedures for transmitting data to the receiving side of the terminal device 100.

Hereinafter, the data transmission operation of the terminal device 100 according to the embodiment of the present invention will be described in detail with reference to FIG. 2 and FIG.

FIG. 2 is a flowchart showing a general flow of a communication control method of the terminal device 100 according to an embodiment of the present invention. FIGS. 3 and 4 are flowcharts showing a communication process of the terminal device 100 according to an embodiment of the present invention. Fig. 2 is a flowchart showing an example of a control method. Fig. Hereinafter, a process performed in each step will be described.

First, in step 210, the terminal device 100 measures a round trip time (RTT) of a plurality of communication interfaces 110. That is, the terminal device 100 measures the round trip time for transmitting the data packet to the receiving side through the first communication interface 111 and the round trip time for transmitting the data packet to the receiving side via the second communication interface 112 do.

It is assumed that the round trip time of the first communication interface 111 is faster than the round trip time of the second communication interface 112 in this embodiment. That is, it is assumed that the transmission speed of the data packet through the first communication interface 111 is faster than the transmission speed of the data packet through the second communication interface 112. [

Next, in step 220, the control unit 120 of the terminal device 100 transmits the data packet using the first communication interface 111 having the fastest transmission speed. At this time, the terminal device 100 transmits the data packet with a size (maximum size) allowed by the congestion window of the first communication interface 111. [

3 and 4, in step 220, the terminal device 100 sequentially transmits data packets 1 to 5 through the first communication interface 111. In this case,

Next, in step 230, the control unit 120 of the terminal device 100 determines whether the buffer size of the receiving side (for example, the remaining size of the receiving buffer) and the number of data packets after the data packet transmitted through the step 220 (Maximum size) of the congestion window of the first communication interface 111 in the case where the data packets are transmitted to the first communication interface 111. The second communication interface 112 determines whether to use the second communication interface 112 based on the size

3, data packet 6 of the data packets following the data packet transmitted through step 220 is transmitted through the second communication interface 112, It is assumed that data packets 7 to 11 of the following data packets are transmitted according to the size (maximum size) of the congestion window of the mobile station.

At this time, since the data packets transmitted from the terminal device 100 are to be processed in order, the data packets 7 to 11 arrive first on the receiving side through the first communication interface 111 having a high transmission speed The data process can be performed only when the sixth data packet arrives. Accordingly, there is a buffer for storing the subordinate data packet (data packet No. 7 to data packet No. 11) arriving at the receiving side. After processing the data packet No. 6, a subordinate data packet is extracted from the buffer, Processing.

Accordingly, if the subsequent data packet to be transmitted according to the size of the congestion window of the first communication interface 111 is stored in the buffer of the receiving side (i.e., there is space left in the buffer of the receiving side) (230) determines the transmission of the data packet using the second communication interface. Accordingly, at step 240, at least one of the subsequent data packets (sixth data packet) is transmitted to the second communication interface 112, and at step 250, the subsequent data packets (Data packet # 7 to # 11 data packet) of the remaining data packets to the first communication interface 111.

Conversely, if the subsequent data packet to be transmitted according to the size of the congestion window of the first communication interface 111 is not all stored in the buffer of the receiving side (that is, the remaining space in the buffer of the receiving side is insufficient) , The second communication interface is not used in step 230. [ Accordingly, referring to FIG. 4, in step 260, all subsequent data packets (data packet # 6 to data packet # 10) are transmitted to the first communication interface 111.

In summary, since the second communication interface 112 does not interfere with communication of the first communication interface 111 when the amount of buffer remaining in the reception side buffer can store all the data packets to be transmitted later, The second communication interface 112 is connected to the first communication interface 111 when the amount of buffer remaining in the receiving buffer can not store all the data packets to be transmitted later, The second communication interface 112 is not used. At this time, the buffer size of the receiving side can receive information directly from the receiving side, or it may be stored in advance.

That is, in step 230, the control unit 120 determines whether or not the buffer size of the reception side and the data packets after the data packet transmitted in step 220 are transmitted to the first communication interface 111, Based on the size of the congestion window of the first communication interface 111 and the second communication interface 112, determines the communication interface through which the subsequent data packet is to be transmitted.

At this time, if the subsequent data packet to be transmitted according to the size of the congestion window of the first communication interface 111 is stored in the buffer of the receiving side, at step 230, at least one of the following data packets Determines to transmit the data packet to the second communication interface 112 and determines to transmit the remaining one of the following data packets to the first communication interface 111 and in steps 240 and 250, It may transmit the priority data packet to the second communication interface 112 and transmit the remaining data packet to the first communication interface 111. [

Conversely, if the subsequent data packet is not stored in the receiver buffer, step 230 determines to transmit all subsequent data packets to the first communication interface 111, and in step 260, And may transmit all subsequent data packets to the first communication interface 111.

Meanwhile, in the present embodiment, the number of communication interfaces 110 is two. However, the present invention can also be applied to three or more communication interfaces when referring to the above description.

5 is a graph showing data transmission performance of the terminal device 100 according to an embodiment of the present invention. In FIG. 5, the performance of the conventional method is shown for the red line and the dotted line, the performance when the method of the present invention is used for the green line and the blue line, and the performance for the black circle using the interface with the fastest transmission speed .

In addition, embodiments of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks, and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Examples of program instructions, such as magneto-optical and ROM, RAM, flash memory and the like, can be executed by a computer using an interpreter or the like, as well as machine code, Includes a high-level language code. The hardware devices described above may be configured to operate as one or more software modules to perform operations of one embodiment of the present invention, and vice versa.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and limited embodiments and drawings. However, it should be understood that the present invention is not limited to the above- Various modifications and variations may be made thereto by those skilled in the art to which the present invention pertains. Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

Claims (5)

A communication control method for sequentially transmitting a plurality of ordered data packets using a terminal device including a first communication interface and a second communication interface performing communication according to different wireless communication technologies,
(A) transmitting a data packet over the first communication interface;
Based on the buffer size of the receiving side and the size of the congestion window of the first communication interface when data packets after the data packet transmitted in the step (a) are transmitted to the first communication interface, (B) determining a communication interface to transmit the subsequent data packet of the first communication interface and the second communication interface; And
And (c) transmitting the subsequent data packet to the determined communication interface. The method according to claim 1,
Wherein the transmission rate of the first communication interface is faster than the transmission rate of the second communication interface. The method according to claim 1,
When the subsequent data packet to be transmitted according to the size of the congestion window of the first communication interface is stored in the buffer of the receiving side,
(B) determines to transmit at least one of the subsequent data packets to the second communication interface, and transmits the remaining one of the subsequent data packets to the first communication interface And,
Wherein in the step (c), the priority data packet is transmitted to the second communication interface, and the remaining data packet is transmitted to the first communication interface. The method according to claim 1,
When the subsequent data packet to be transmitted according to the size of the congestion window of the first communication interface is not stored in the receiving side buffer,
Wherein in the step (b), it is determined to transmit all the subsequent data packets to the first communication interface, and in the step (c), all the following data packets are transmitted to the first communication interface The communication control method comprising: A first communication interface and a second communication interface for performing communication according to different wireless communication technologies; And
And a control unit for controlling communication of the first communication interface and the second communication interface,
Sequentially transmitting a plurality of ordered data packets to the receiving side,
Wherein,
Control to transmit a data packet over the first communication interface,
Based on the buffer size of the receiving side and the size of the congestion window of the first communication interface when data packets after the data packet transmitted through the first communication interface are transmitted to the first communication interface, Determining a communication interface through which to transmit the subsequent data packet of the first communication interface and the second communication interface,
And to transmit the subsequent data packet to the determined communication interface.
KR1020140075824A 2014-06-20 2014-06-20 Terminal device for transferring data to the receiver using multi communication interface and Method for controlling communication of the Terminal device KR101524467B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140075824A KR101524467B1 (en) 2014-06-20 2014-06-20 Terminal device for transferring data to the receiver using multi communication interface and Method for controlling communication of the Terminal device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140075824A KR101524467B1 (en) 2014-06-20 2014-06-20 Terminal device for transferring data to the receiver using multi communication interface and Method for controlling communication of the Terminal device

Publications (1)

Publication Number Publication Date
KR101524467B1 true KR101524467B1 (en) 2015-06-01

Family

ID=53490723

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140075824A KR101524467B1 (en) 2014-06-20 2014-06-20 Terminal device for transferring data to the receiver using multi communication interface and Method for controlling communication of the Terminal device

Country Status (1)

Country Link
KR (1) KR101524467B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100058404A (en) * 2008-11-24 2010-06-03 한국과학기술원 Mobile terminal having multi-interface and method for receiving multimedia streaming, server and method for providing multimedia streaming using multi-network
KR20100114828A (en) * 2009-04-16 2010-10-26 엘지전자 주식회사 Method for processing traffic using unused band in an intermediate access point
KR20130106531A (en) * 2012-03-20 2013-09-30 고려대학교 산학협력단 Method and apparatus for transmitting mulimedia data and method for receiving the mulimedia data
US20140056142A1 (en) * 2011-11-09 2014-02-27 Telefonaktiebolaget Lm Ericsson (Publ) Congestion Control for Multi Flow Data Communication

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100058404A (en) * 2008-11-24 2010-06-03 한국과학기술원 Mobile terminal having multi-interface and method for receiving multimedia streaming, server and method for providing multimedia streaming using multi-network
KR20100114828A (en) * 2009-04-16 2010-10-26 엘지전자 주식회사 Method for processing traffic using unused band in an intermediate access point
US20140056142A1 (en) * 2011-11-09 2014-02-27 Telefonaktiebolaget Lm Ericsson (Publ) Congestion Control for Multi Flow Data Communication
KR20130106531A (en) * 2012-03-20 2013-09-30 고려대학교 산학협력단 Method and apparatus for transmitting mulimedia data and method for receiving the mulimedia data

Similar Documents

Publication Publication Date Title
EP3211938A1 (en) System and method to prevent packet loss during handover
KR102319836B1 (en) Method and apparatus for determining method of communication between base station and terminal in wireless communication system
US10225830B2 (en) Processing method of data packet, terminal, base station and system
US10499297B2 (en) Method for handover between distributed access points and related device
US20170027016A1 (en) Communication device, wireless communication device, and communication method
EP3103307A1 (en) Methods, apparatus and computer programs for performing radio bearer mapping in dual connectivity
CN104519529A (en) Method, equipment and system for transmission control on user equipment
US11026091B2 (en) Data transmission method and apparatus
US12058571B2 (en) Mobility enforcement in connected wireless state
US20150117226A1 (en) Method and system for session based data monitoring for wireless edge content caching networks
CN107079524A (en) The method and controller of a kind of data forwarding
CN104320812B (en) A kind of method, apparatus and system of joint transmission
JP2018524920A (en) Wireless network function setting method, wireless network node, and core network device
CN112087777B (en) MDBV (minimum drive buffer volume) determination method, device and system
EP3247075B1 (en) Service data stream data packet processing method and device
US8773990B1 (en) Detecting unauthorized tethering
US20160302121A1 (en) Method and apparatus for transmitting ip packet using segment routing
US10050880B2 (en) Multi-link aggregation method and device
KR101524467B1 (en) Terminal device for transferring data to the receiver using multi communication interface and Method for controlling communication of the Terminal device
US10798612B2 (en) Dynamic load balancing using different data transmission paths in a telecommunications network comprising a mobile network part, a fixed network part, and a plurality of router devices
KR101411782B1 (en) Terminal device with multi communication interface and method for controlling communication of the ternimal device
EP4090126A1 (en) Data transmission method and apparatus
EP3648507A1 (en) Systems and methods for determining tcp transfer types in lte-a communication networks and handling thereof
US20170230882A1 (en) Providing communication services of a mobile communication network to a plurality of telecommunication devices
US9872304B1 (en) Packet fragmentation for VoLTE communication sessions

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee