WO2014193083A1 - Procédé de commande de réception de données pour du contenu distant sur de multiples réseaux de communication sans fil, et appareil correspondant - Google Patents

Procédé de commande de réception de données pour du contenu distant sur de multiples réseaux de communication sans fil, et appareil correspondant Download PDF

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Publication number
WO2014193083A1
WO2014193083A1 PCT/KR2014/003434 KR2014003434W WO2014193083A1 WO 2014193083 A1 WO2014193083 A1 WO 2014193083A1 KR 2014003434 W KR2014003434 W KR 2014003434W WO 2014193083 A1 WO2014193083 A1 WO 2014193083A1
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WIPO (PCT)
Prior art keywords
data
section
wireless communication
request
communication network
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PCT/KR2014/003434
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English (en)
Korean (ko)
Inventor
이승준
김순욱
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주식회사에어플러그
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Publication of WO2014193083A1 publication Critical patent/WO2014193083A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints

Definitions

  • the present invention relates to a method and apparatus for receiving data of remote content using a plurality of heterogeneous networks having a plurality of wireless communication networks, in particular, characteristics of a service area, quality of service, or the like. .
  • wireless communication terminal As wireless communication network develops, users can browse various information that they need regardless of place using mobile phone, smart phone, tablet computer etc. (hereinafter referred to as “wireless communication terminal”). browsing or receiving or viewing desired content by downloading or streaming.
  • the quality of the provided wireless communication service is highly volatile in space or time. Therefore, even if the video content of high quality is smoothly received through the connected wireless communication network, the current stable quality may not be continuously provided after moving or time passes.
  • a wireless communication terminal has a wireless communication resource capable of connecting to a plurality of heterogeneous networks having different communication resource infrastructures, and through such resources, multiple accesses (in this specification, simultaneously from each communication network).
  • multiple access for the state that a connection IP address for data communication is assigned and a data service is available through multiple communication networks simultaneously through the assigned plurality of connection IP addresses. Even if the quality of the wireless data service in the communication network changes, the other network may compensate for the variability.
  • the overall data reception speed is In addition, it may be stably maintained above the required speed of the corresponding content.
  • Wi-Fi wireless LAN networks are limited in having scattered local service domains, and generally do not charge for their use
  • cellular networks The use of data services over mobile communication networks
  • the Wi-Fi network can be connected through multiple accesses.
  • the data of the content may be complementarily or alternatively received through the Fi network.
  • the user may reduce the data usage fee according to the viewing of the content.
  • the data intervals for the corresponding content must be divided and requested through each wireless communication network.
  • there is a time difference between when the request for determining the data interval of the content and when the requested data interval is received and there may be a change in the communication characteristics of the wireless communication network that receives the data interval even in such a time difference.
  • the requested data interval is received without problem through one communication network, but the requested data interval is transmitted through another communication network. Reception may be delayed due to a decrease in the communication characteristics of the communication network. When such a case occurs, a situation in which a video played by streaming content may be temporarily interrupted even though the content data is received using a plurality of wireless communication networks.
  • the present invention provides a data reception control method and apparatus that can adapt a content interval request through any one of a plurality of wireless communication networks according to a reception state so as not to run out of content data currently received and played. There is a purpose.
  • Another object of the present invention is to receive the content data to be played while being received so as not to be insufficient, in consideration of the cost burden due to the user's use of the network data that can adaptively change the content interval request over the arbitrary network It is to provide a reception control method and apparatus.
  • the object of the present invention is not limited to the object explicitly stated above, and of course includes the purpose of achieving an effect that can be derived from the specific and exemplary description of the present invention.
  • a wireless communication terminal capable of accessing a plurality of wireless communication networks includes a communication protocol for requesting data of content using any one of a connected first wireless communication network and a second wireless communication network.
  • a transmitter / receiver configured to transmit a request to the outside via a connection interface, for example, a socket, and to receive the requested content data through a wireless communication network to which the request was sent, and a first section designated for the selected content. Requesting the transceiver to transmit the request according to the requesting first communication protocol to an external server through the first wireless communication network, and skipping a skip period for unreceived data in the first section.
  • a request according to the second communication protocol for requesting a second section in which a jumped point is designated as a starting point is transmitted to an external station through the second wireless communication network.
  • a controller for requesting the transceiver to transmit a request according to a third communication protocol requesting a section after the last data received for the transmission to the external server through the second wireless communication network is provided.
  • the imaginary controller applies a case different according to the type of the first wireless communication network or the second wireless communication network in determining whether the data reception state corresponds to the use network switching requirement of the first section.
  • the control unit may be configured as the first wireless communication network.
  • the control unit is The data reception state is a case where the data rate received according to the request by the second communication protocol is faster than a predetermined reference speed or a predetermined multiple or more times faster than the speed required for normal play of the selected content. It is determined that it corresponds to the use network switching requirement of one section.
  • the transmitting and receiving unit transmits the request according to the third communication protocol through a socket different from the request according to the second communication protocol.
  • the control unit When the data of the second section is received, it is determined that the data reception state corresponds to the use network switching requirement of the first section.
  • Each of the second sections may designate up to the last data of the selected content.
  • the control unit is the first communication protocol.
  • the received data rate is slower than the speed required for normal play of the selected content, it is determined that the data reception state corresponds to the use network switching requirement of the first section. If the data reception state according to the request according to the first communication protocol is improved to a predetermined reference value or more, the controller requests the section after the last data received for the second section. May further perform an operation of requesting the transceiver to be transmitted through the second wireless communication network.
  • the first section may designate up to the last data of the selected content
  • the second segment may designate up to any data point before the last of the selected content.
  • control unit even if the data reception state corresponds to the use network switching requirement of the first section, between the last data received in the first section to the start data of the second section If the data on the selected content corresponding to is equal to or less than a predetermined size, the request according to the third communication protocol may not be transmitted.
  • control unit is configured to receive the data only when the ratio of the data amount received in response to the request by the second communication protocol is greater than or equal to a predetermined reference.
  • the request according to the third communication protocol is transmitted.
  • the section designated by the request according to the third communication protocol is from the last data received at the present time point for the first section to the data just before the start data of the second section. It may be to designate up to the last data of the selected content.
  • the transceiver and the controller are included in the same execution entity as the media processor for decoding data of the selected content.
  • control unit determines the skip section to be relatively small as compared to when the data rate is low in response to a request by the first communication protocol.
  • the controller determines the skip period relatively smaller than that of a cellular mobile communication network.
  • the control unit when there is a large amount of unprocessed data which is not provided to the processing unit for decoding media data from the data of the selected content received by the controller, the skip section is determined to be relatively small as compared with the small amount.
  • control unit the last point of the second section, the raw data that is not provided to the processing unit for decoding the media data from the data of the selected content received by the transmission and reception unit; If the amount of unprocessed data is large, it is determined in such a manner that the second section is relatively small compared to the small amount.
  • control unit determines the last point of the second section based on a data rate received according to a request by the first communication protocol, but when the data rate is slow, Compared with the second section, the second section is relatively large.
  • control unit determines the last point of the second section based on the variability of the communication characteristics of the first wireless communication network, when the variability is high compared to the second when the variability is high Determine in such a way that the interval becomes relatively small.
  • control unit when the request according to the third communication protocol is to be transmitted to the external server, the data reception via the first wireless communication network according to the request according to the first communication protocol Perform the operation that causes this to stop.
  • one method of controlling data reception using a plurality of wireless communication networks is to designate a first section for the selected content and transmit the first section of data to an external server using the first wireless communication network. Requesting and providing the received data according to the request to a processing unit for decoding the media data, and skipping the skipped point with respect to the content with a skip period for the unreceived data in the first section.
  • an apparatus capable of providing a program executed in another apparatus through an interface may include: an interface capable of transmitting and receiving data to and from the outside; and wirelessly providing data externally through the interface. It comprises a recording medium containing a program to be executed in the communication terminal.
  • the program when executed in an arbitrary wireless communication terminal connected to the first wireless communication network and the second wireless communication network, the first communication request for requesting the first section designated for the selected content is requested.
  • At least one embodiment of the present invention described above, or described in detail in conjunction with the accompanying drawings below, is expected to play smoothly in the way that the content of the remote content is received and played through a wireless communication network. Otherwise, a plurality of wireless communication networks are used to ensure the reception speed required for play. During the reception of the content data using the plurality of wireless communication networks, the cost of using the wireless communication network used for data reception, or the data reception state, in the state in which the data of any content section already requested by dividing into each wireless communication network has not been received. In consideration of the above, if necessary, the data of the arbitrary section is changed and received.
  • a user who views and plays content data through a wireless communication terminal capable of simultaneously accessing a plurality of wireless communication networks enjoys full viewing of content without interruption while minimizing the cost burden caused by data usage. It becomes possible.
  • FIG. 1 is a logical and externally connected configuration of a programmatic view of the relevant components of a wireless communication terminal in which an embodiment of the method for controlling the reception of data via a plurality of wireless communication networks for remote content according to the present invention is implemented.
  • a wireless communication terminal in which an embodiment of the method for controlling the reception of data via a plurality of wireless communication networks for remote content according to the present invention is implemented.
  • FIG. 2 illustrates a configuration of a wireless communication terminal in which one method of receiving media data while controlling the reception of data through a plurality of wireless communication networks for remote content is implemented according to an embodiment of the present invention.
  • FIG. 3 is a diagram illustrating switching of a communication network for receiving data of a section according to a current reception state for an arbitrary data section requested while receiving content data using a plurality of wireless communication networks according to an embodiment of the present invention. Is the flow chart of the method
  • FIG. 4 is a diagram for describing a method in which a data section to be transmitted is skipped and determined in a data point received so far through a communication network additionally used in addition to a current communication network according to an embodiment of the present invention.
  • FIG. 5 is a diagram illustrating a skip section from a data point received so far to a start point of a data section to be received through an additionally used wireless communication network according to an embodiment of the present invention based on a currently received buffering amount. Is an example of a rule
  • FIG. 6 illustrates an example of a rule in which the size of a data section to be received through an additionally used wireless communication network is determined based on a current data reception rate, according to an embodiment of the present invention.
  • FIG. 7 is a diagram illustrating data sections received through each communication network in order when received by dividing the content into remote sections using a plurality of wireless communication networks according to an embodiment of the present invention, and requested data sections. Is an example of a list that manages section-requested information on content to switch and receive its network if necessary for
  • FIG. 8 is a diagram for explaining embodiments according to the present invention.
  • a request is divided into sections for receiving content using a plurality of wireless communication networks for remote content, how each section request may correspond to a data section on the content.
  • FIG. 10 is a diagram illustrating switching of a network using data of a pre-requested section when reception of a second-requested section is completed in data sections requested through different wireless communication networks according to an embodiment of the present invention. Shows the process of receiving by
  • FIG. 11 is a view illustrating a data network selectively using data of a section for a data section requested in data sections requested through different communication networks based on a data receiving rate of the section according to an embodiment of the present invention. Shows the process of switching to receive
  • FIG. 12 is data of a post-requested section selectively based on a reception state of a pre-requested section for a post-requested section in requested data sections over different communication networks according to an embodiment of the present invention. Shows the process of receiving by switching the network,
  • FIG. 13 illustrates an example in which components controlling data reception through a plurality of wireless communication networks for remote content are implemented separately from a player decoding media data according to another embodiment of the present invention.
  • FIG. 1 is a logical and externally connected configuration of a programmatic view of the relevant components of a wireless communication terminal in which an embodiment of the method for controlling the reception of data via a plurality of wireless communication networks for remote content according to the present invention is implemented. It is an example.
  • the logical configuration of the programmatic view of the wireless communication terminal 100 illustrated in the figure is the driving of hardware resources (illustrated in FIG. 2) of the wireless communication terminal 100, appropriate signals and / or information with the corresponding resources.
  • a media player 110 having a normal operating system (Android, IOS, Window, etc.) or an operating system 100a specialized for the present invention for performing an exchange, and also running under the operating system 100a. It includes.
  • 'application' various applications other than these (hereinafter, abbreviated as 'application') may be implemented. However, since the description is unnecessary in describing the principles and concepts of the present invention, examples of the conventional applications will be omitted.
  • the operating system 100a may be allocated with a plurality of access IP addresses for data services and used in combination with each other, for wireless communication networks available as hardware resources of the wireless communication terminal 100 by itself or at the request of an application. use together).
  • 1 shows that the operating system 100a is configured to receive IP1 100a 1 from a cellular network 11a, which is one of public mobile communication networks, and IP2 100a 2 from a Wi-Fi network 11b, respectively. It is an illustration.
  • the operating system 100a may set a single access IP address if necessary or in accordance with the state of being able to connect to the wireless communication network.
  • All or partial functions of the media player 110 may be accomplished by a process or an application configured as command code executed based on the operating system 100a. Can be.
  • a program corresponding to the process or the application may be provided to the wireless communication terminal 100 from a specific server connected to the data communication network.
  • the specific server may include mass storage means for providing data contained in a recording medium through an provided interface, and data read through the interface from the mass storage means may be transmitted to another device through a connected data communication network.
  • a communication means wherein the program is stored in a recording medium of the mass storage means.
  • the program recorded on the recording medium of the mass storage means is read from the recording medium by the communication means through a normal on-line purchase process or the like made by the wireless communication terminal 100 upon request. It may be downloaded and installed in the wireless communication terminal 100 through a communication network.
  • at least some of the functions of the media player 110 may be in the form of middleware or a platform on which applications are based, or in the form of part of the operating system 100a. It may be implemented at (100).
  • the media player 110 may include hardware configuration, so that some of the functions described in detail below may be performed through the hardware. Accordingly, the scope of the present invention is not limited to the media player 110 in which the configuration and operation manner are described in detail in various embodiments according to the present invention.
  • the media player 110 the media processing unit 111 for processing the media data of the received content to be decoded, and the API (Application Program Interface) provided by the operating system (100a)
  • a data socket 112 that generates a communication socket, which is an interface for a connection with the outside, and transmits and receives with the outside through the generated communication socket, is used as a sub process.
  • allocating or generating a reception buffer 113a and a transmission buffer 113b which are data channels for data transmission / reception with the media processing unit 111, and receiving data received from the data transmission / reception unit 112.
  • the reception control unit 113 provided to the media processing unit 111 through the 113a and controlling data reception according to a state in which data is received from a remote place, etc. It includes a process.
  • the transmission buffer may not be implemented.
  • the media processing unit 111 provides data or request information to be transmitted to an external server according to a user's request to the reception control unit 113 through an intermediate parameter or the like.
  • the reception control unit 113 forms a request according to the communication protocol, for example, an HTTP request or an RTSP / RTP request, and transmits a request to the data transmission / reception unit 112.
  • the UI processing unit for processing a user request may be implemented as a separate process from the media processing unit 111.
  • the UI processing unit provides the reception control unit 113 with media or the like to transmit data or request information to be transmitted to an external server according to a user's request.
  • the data transmission / reception unit 112 selectively (i.e., the wireless communication network available in the plurality of wireless heterogeneous networks 11a, 11b,...) As instructed by the reception control unit 113 or in accordance with information set. All or a plurality of communication networks are used to exchange data with an external server, for example, the content server 12 shown in the drawing.
  • the reception control unit 113 communicates with a remote file selected by the user through the user UI provided by the media processing unit 111 (or the UI processing unit as described above), for example, a file having content data.
  • the data is received from a remote place, and a request by a communication protocol necessary for the reception is made and transmitted to the outside through the data transmission / reception unit 112. .
  • the user wants to receive the data divided into a plurality of communication networks for the remote file selected by the user, for the data section requested through the arbitrary communication network adaptively according to the current reception state of some data of the section through the other communication network Performs an operation for receiving.
  • the data transmission and reception unit 112, the media processing unit 111, and the reception control unit 113 may be processes that are separately performed based on the operating system 100a. .
  • the media player 110 including the data transceiver 112, the media processor 111, and the reception controller 113 may be implemented as a single process.
  • the exchange of information or data with each other may be achieved through the use of global variables, internal variables or local functions and / or return values.
  • the concept, the subject matter, and the desired effect of the present invention may require or require a process in which the data transmitting and receiving unit 112, the media processing unit 111, and the receiving control unit 113 are separated and executed separately. Not all of them, but all of the components 111, 112, 113 described below can of course be achieved even if integrated into the media player 110 and implemented as a single process.
  • the wireless communication terminal 100 having the logical configuration illustrated in FIG. 1 includes a hardware component as illustrated in FIG. 2 as a whole, and includes a cellular network 11a and a Wi-Fi network 11b.
  • a cellular modem (1a) (RF) for modulating or demodulating a signal according to a method specified in a public mobile communication network, for example, a 2G, 3G or 4G cellular network (RF)
  • RF cellular modem
  • RF for modulating or demodulating a signal according to a method specified in a public mobile communication network, for example, a 2G, 3G or 4G cellular network (RF)
  • RF cellular codec 1b that encodes or decodes the encoded data according to a communication protocol adopted by the cellular network
  • Wi-Fi network for example, a Wi-Fi network.
  • Wi-Fi modem 2a a component including an RF signal processing module
  • a Wi-Fi codec 2b for encoding data or decoding an encoded data frame, a display panel 5 for displaying images, characters, and the like, and arbitrary data are visually displayed on the display panel 5.
  • the input control unit 6 for outputting corresponding input information, and to transmit or transmit data to or from the appropriate ones of the components so that an operation according to the input information from the input control unit 6 is performed.
  • the main control unit 10 executes pre-stored command codes such as firmware provided to the main control unit 10 so that the operating system 100a performs an intended function, and the media player 110.
  • the command codes corresponding to all or part of, the operations of the media player 110 described in detail below are performed.
  • the media processing unit 111 of the media player 110 through the appropriate API (Application Program Interface) provided by the operating system 100a for the data blocks of the encoded video or audio, if necessary, It is also possible to use a decoding operation that the decoder 8 processes in hardware.
  • API Application Program Interface
  • the configuration of the wireless communication terminal 100 illustrated in FIG. 2 is just one example for specifically and exemplarily describing an embodiment for helping understanding the concept and the subject of the present invention, and according to the present invention.
  • the terminals implementing the subject matter may further include components of various functions not shown in FIG. 2 or may exclude components illustrated, and hardware components may be implemented in software.
  • the process of controlling the reception of content data using a plurality of wireless communication networks is performed as follows.
  • a user may use an input / output unit (the display panel 5, the touch sensor 6a, the keypad 6b, etc.) provided in the wireless communication terminal 100 to provide an appropriate information provided by the main controller 10.
  • the media player 110 is activated through a user interface (UI).
  • UI user interface
  • the reception controller 113 allocates the reception buffer 113a and the transmission buffer 113b to the memory unit 7 and allocates each of the allocated buffers 113a and 113b. Is shared to the media processing unit 111.
  • the user directly inputs or selects a URL through a user UI for selecting a remote file provided by the media player 110 on the display panel 5 using the API of the operating system 100a.
  • the media player 110 requests the URL, for example, “http://vod.airplug.com/video/movieA.mp4”, or a request according to a communication protocol, for example, HTTP Request or RTSP. / RTP Request is notified to the reception control unit 113.
  • a request by a communication protocol for designating a specific remote file may be transmitted from another application, for example, a browser, through a call argument.
  • a browser sends an HTTP Request according to an item selected by a user in a response received from an arbitrary server and receives the response from a remote site, the media is based on the MIME type described in the response.
  • the call to the player 110 passes the URL for the selected item that caused the response to the media player 110 via a call parameter, in which case the media player 110 is activated. If not, the operation is performed by the operating system 100a In this way, when a URL is received from another application through a call mediator, the media player 110 sends the URL or a communication protocol according thereto.
  • the reception control unit 113 is notified of the request by the receiver.
  • the reception control unit 113 creates a request based on a communication protocol for the notified URL and transmits the request to the data transmission / reception unit 113 to request the transmission.
  • the reception control unit 113 may create a request based on a communication protocol for requesting by designating only a partial section of a file designated by the received URL.
  • the requesting process while designating a data section for a remote file is performed in a situation where a plurality of wireless communication networks are used unless a special case is used.
  • the remote file is requested when the remote file is first requested.
  • the request made by the communication protocol for the URL received by the reception control unit 113 does not specify a section of a remote file, that is, This is to request the entire interval of the file.
  • the data transmission / reception unit 113 requests generation of a communication socket, which is a connection interface, while providing a request according to a communication protocol created and transmitted by the reception control unit 113 to the operating system 100a.
  • the request may be for a communication network designated by the operating system 100a as a default for data service or may be for a wireless communication network designated by the reception control unit 113.
  • the reception control unit 113 refers to the network connection information returned by inquiring of the operating system 100a.
  • the network connection information includes a connection IP address and a connection type (for example, a 3G mobile communication network, a Wi-Fi network, etc.) when connected to a communication network, so that a current communication socket is created.
  • a connection type for example, a 3G mobile communication network, a Wi-Fi network, etc.
  • the request for communication is transmitted to the data transmission / reception unit 113, and the data transmission / reception unit 113 specifies
  • the information is used to request the creation of a communication socket to the operating system 100a. For example, when it is confirmed that a plurality of communication networks are currently connected for a data service (that is, when a plurality of access IP addresses IP1 and IP2 are allocated as shown in FIG. 1), the reception control unit 113 While specifying a connection type for the Wi-Fi network, the data transmission / reception unit 112 requests transmission of a request based on a communication protocol.
  • the wireless communication terminal 100 since the wireless communication terminal 100 can simultaneously connect to a plurality of wireless communication networks, the wireless communication terminal 100 may be multiplexed as illustrated in FIG. 1 under a given communication environment.
  • the wireless communication terminal 100 is a single wireless communication network, for example, the cellular network. Assume that it is in the connected state only for (11a).
  • the operating system 100a transmits / receives the information (for example, protocol information described in the request, a host field name or IP address, etc.) included in the request according to the received communication protocol, and the data requesting the creation of a communication socket.
  • the cellular network which is a communication network which is currently default or designated by the reception control unit 113 according to the foregoing assumption, based on the port number assigned to the unit 112 (may be the media player 110 in some cases).
  • a TCP connection specified as a local IP address (IP: Port) added to the connection IP address assigned from (11a) is connected to an external server (hereinafter, the external server) that is the destination of the request. Assume (12) and establish.
  • IP local IP address
  • the data transmitting / receiving unit 112 transmits the identifier to the receiving control unit 113 so that the data section requested by the request by the communication protocol to be transmitted and the section are received.
  • the identifier of the communication socket to be linked is recorded (which will be described later in detail), and transmitted to the operating system 100a through the communication socket specified by the identifier, so that the communication protocol has been previously received.
  • Request is sent to the content server 12.
  • the request at this time is transmitted as the corresponding signal by the cellular codec 1b / cellular modem 1a.
  • the request thus sent is routed to the content server 12 by associated communication networks, and the content server 12 constructs a response to the request and transmits the response to the wireless communication terminal 100. .
  • the response configured and provided by the content server 12 is received by the data transmitting and receiving unit 112 from the operating system 100a through the generated communication socket, and reads the received response data to the receiving control unit ( 113).
  • the transfer may be performed through a memory space shared between the reception control unit 113 and the data transmission / reception unit 112.
  • the data transceiver 112 may record data received by the data transceiver 112 in a memory space and transmit the head address of the recorded position to the reception controller 113.
  • the response received by the reception control unit 113 includes file description information (memory of a content file) provided according to a protocol format for transmitting the content file as well as data of a remote file selected by a user, for example, a content file.
  • the reception control unit 113 grasps the media information (the playing time of the content, etc.) from the data of the head of the received content data, and stores the media information (meta data) together with the file description information.
  • the request according to the communication protocol that caused the response to be received is also stored separately for later use.
  • the data of the content file (hereinafter, also referred to as "content data”) is transmitted to the media processing unit 111 through the reception buffer 113a in the response received from the data transmission / reception unit 112.
  • the reception control unit 113 identifies the type of wireless communication network on which the response data is currently being received, starts tracking the total amount of reception of the content data and monitoring the data reception status.
  • the data reception state includes the amount of data currently buffered in the reception buffer 113a, the degree of change (speed of increasing or decreasing) of the buffering amount, the data reception speed, and the like.
  • the data reception speed is a data amount received by the reception control unit 113 from the data transmission / reception unit 112 per predetermined time, or a data amount filled in the reception buffer 113a by the reception control unit 113 per predetermined time. This can be identified through monitoring. Of course, such a reception rate can be identified by classifying the wireless communication network.
  • the reception control unit 113 measures the amount of data received from the data transmission and reception unit 112 per hour
  • the reception control unit 113 receives a wireless communication network in which the data notified from the data transmission and reception unit 112 is received. Based on the information to inform or inform the wireless communication network (for example, the identifier of the communication socket), it is to measure the amount of data received for each of the wireless communication network to be received per hour.
  • the arbitrary data amount Arb_DataS checked by the reception control unit 113 through monitoring of the reception state may be converted into a corresponding time amount Arb_DataT according to the following equation [1] and used.
  • Arb_DataT Arb_DataS x (P_TIME / file_D) Expression [1]
  • Equation [1] may be applied inversely to grasp the data amount corresponding to the time value. Therefore, in the embodiments according to the present invention, when the physical units of both comparing or corresponding to each other or mutually computing are different from each other as the amount of time and data related to the content play, the equation [1] By comparison, either one is converted into physical quantities of the same unit and compared. Therefore, in the detailed description and the drawings of the embodiments according to the present invention, when the time value and the data amount are used or described without being strictly distinguished, they may be replaced by the corresponding physical values of the corresponding values according to the formula [1].
  • the media processing unit 111 draws out the content data accumulated in the reception buffer 113a in order by the reception control unit 113, and determines the decoding method based on the encoding information of the data recorded in the header of the data. Then, the content data is partially or completely decoded according to the determined decoding scheme. In the case of partial decoding, the determined decoding scheme is also set in the decoder 8.
  • the partial decoding may be, for example, extraction of media packets on a block basis, picture basis, or GoP (Group of Pictures) basis.
  • the decoded media packets are applied to the decoder 8 to request decoding so that video and audio signals thereof are output.
  • the image data completely decoded by the media processing unit 111 is applied to the display driver 4 through the operating system 100a and output as an image signal. As a result, the user starts watching the content selected by the user.
  • the media processing unit 111 by receiving the content data and providing it to the media processing unit 111, while the content of the remote location selected by the user is decoded and displayed to the user visually, the wireless that the content data is currently received
  • another wireless communication network for example the Wi-Fi network 11b
  • the multiple network usage mode of the flowchart as illustrated in FIG. Will perform the action.
  • the operating system 100a periodically runs a connection resource of the Wi-Fi network (the Wi-Fi modem 2a and the Wi-Fi codec 2b) to search whether there is a Wi-Fi network accessible to the surroundings.
  • the reception control unit 113 may know a state in which a Wi-Fi network is available in addition to the cellular network.
  • a reception control operation according to a reception state performed in a multiple network use mode will be described in detail with reference to the flowchart illustrated in FIG. 3.
  • a data point to request reception through a newly connected wireless communication network is determined based on the current data reception state (S201).
  • a data point is determined based on the value of the amount of data received but not yet played, i.e., unprocessed unprocessed amount.
  • the term 'unprocessed amount' means not only the amount of data not yet provided to the media processing unit 111 in the reception buffer 113a, but also provided to the media processing unit 111 but not yet decoded in the media processing unit 111.
  • the amount of data buffered and the amount of data received from the data transmitting and receiving unit 112 but not moved to the receiving buffer 113a may be included. If the latter two data amounts are relatively small compared to the amount buffered in the reception buffer 113a, the unprocessed amount may be regarded only as the amount buffered in the reception buffer 113a.
  • the 'value' of the unprocessed amount may be the data size of the unprocessed amount or may be a time value converted by Equation [1] as described above with respect to the size.
  • the reception control unit 113 may be a value for a current unprocessed amount, that is, a data amount of the reception buffer 113a (or a play duration of the data amount), or a data point decoded by the media processing unit 111. Data amount (or play duration for the data amount) from the data to the last data point received so far, and if the value is confirmed, the data to be received through the newly connected Wi-Fi network 11b. The point is determined based on its value.
  • FIG. 4 is a diagram to help understand this, and according to the value uprcDT of the raw data 31, a skipped data section (DgapT) (hereinafter, “skip”) is skipped from the last received data position 32.
  • Section " As an example of the rule for determining the skip period DgapT, as illustrated in FIG. 5, when the value of the raw data uprcDT exceeds 10 seconds (401), the skip period (DgapT) is set to 1 second, and 5 to 5 times. If it is 10 seconds (402), 3 seconds, and if it is 5 seconds or less (403), it is determined as 5 seconds.
  • the numerical values and decision rules given here are merely examples of the fact that the skip period DgapT is longer than that of the large when the value of the current unprocessed amount uprcDT is small. Other values and decision rules may be applied as long as the decision method according to the concept and principle of the invention is observed.
  • the size determination of the skip period DgapT according to the value of the raw data uprcDT described with reference to FIG. 4 may also be applied when a cellular network is additionally used when the current network is a Wi-Fi network. The occurrence of such network use will be briefly described later.
  • the skip period DgapT for the case where the current network is a Wi-Fi network and additionally uses a cellular network
  • a rule opposite to the decision rule shown in FIG. 4 may be applied.
  • the skip period DgapT may be shorter than that when the value of the current unprocessed amount uprcDT is small.
  • the reception control unit 113 in determining a skip section according to a current reception state, may be based on the current data reception speed that the reception control unit 113 grasps through the monitoring of the reception state.
  • the current reception speed is set based on the speed (reqV) required by the content currently being received (this required speed is obtained by dividing the size of the content file by the playback time of the content).
  • the skip section may be determined as 1 second, if the reception speed is in the range of 0.75 * ReqV ⁇ ReqV, 2 seconds, if it is in the range of ReqV ⁇ 1.25 * ReqV, 3.5 seconds, and if it is more than 1.25 * ReqV, 5 seconds.
  • the numerical values given here are only for the purpose of showing the basic rule that the skip period (DgapT) is determined to be larger when the current data reception rate is slower than that when it is fast, and it is within the range where these basic rules are observed. Of course, other values can be applied as much as possible.
  • the reception control unit 113 may determine the skip section according to the type of a wireless communication network currently used (in another view, a new wireless communication network to be used).
  • Wi-Fi networks are currently available free of charge, depending on the telecommunications service provider's telecommunications or billing policy that provides wireless data services. Although the service coverage area is scattered and the service radius is also narrow, the wide area service cannot be provided. Since high-speed data services are usually provided in the service available area, when the Wi-Fi network becomes available, it may be advantageous for the user of the wireless communication service to use the Wi-Fi network as much as possible.
  • the fixed cost according to its use (the term 'determined cost' is already due to the use of the data service up to the present point regardless of future use of the data service. It is used to mean a fixed cost. Therefore, when the Wi-Fi network is newly available, it is advantageous to shorten the skip period (DgapT) if possible. Accordingly, when the wireless communication network to be used additionally is a Wi-Fi network, the skip period is shorter than that of the cellular network. In the latter case, that is, when the cellular network is additionally used while the current network is a Wi-Fi network, the wireless terminal 100 first plays the content of the remote content while connected to the Wi-Fi network. In case of request, or when the Wi-Fi network is additionally connected as requested in the above description and requests the remaining entire or partial sections of the content through the Wi-Fi network, This may occur when the data rate received only through the Fi network does not meet the required speed of the content.
  • the above-described embodiment in which the type of the wireless communication network is reflected in determining the skip period may be combined with the above-described embodiment in which the skip period is determined according to the reception state (the throughput or the reception speed).
  • the skip period is adjusted according to the type of the current wireless communication network (or additionally used wireless communication network). For example, when the skip period determined according to the reception state is DgapT0, if the additional wireless communication network to be used is a Wi-Fi network, the DgapT0 may be reduced to 50%.
  • the skip interval may always be determined as a fixed value, for example, 1 second or 2 seconds in size.
  • the reception controller 113 may start to the corresponding content from the target point 311 immediately after the skip period DgapT. It designates the data section for the data section and makes a request by the communication protocol requesting the data section. Since the data point 32 for the content received so far can be known from the total amount of content data continuously tracked by the reception control unit 113 as described above, the determined skip period DgapT is determined. In addition to the total reception amount, the target point 311 can be known. The data section is designated by determining where to request content data from the identified target point 311.
  • the end point of the section may be determined according to the type of wireless communication network to be used for the reception. For example, if the wireless communication network to be used for the reception of the data section is a Wi-Fi network, the end point is defined as the last point 33 of the content data (320). If the cellular network, the end point of the section by determining the size of the section. Let this be determined. In the latter case, that is, the case in which the cellular network is additionally used when the currently used wireless communication network is a Wi-Fi network has been described above.
  • the data interval to be transmitted through the additional wireless communication network is part of the content, but not to the end of the content, the data interval may be set to a fixed value, for example, a size of 10 seconds, or the current reception state (that is, Before further use of the wireless network, the size may be dynamically determined based on the data reception speed through the wireless network being used, or the current throughput.
  • the graph in FIG. 6 based on the current data reception rate.
  • the size of the data interval is determined according to the rule illustrated in FIG.
  • the rule illustrated by the graph 51 in FIG. 6 exemplarily shows a basic rule in which the size of the data section to be received is set longer through an additional communication network than when the current data reception speed is low.
  • other numerical values not illustrated in the figures may be used or other rules may be applied to the present invention.
  • the required speed of the content is used as the reference reception speed 52
  • the size of the data interval no longer becomes small, a value different from the required speed, for example, a specific higher than the required speed.
  • the speed may be used as the reference reception speed 52.
  • the size of the data interval may be dynamically determined according to the current throughput.
  • the size of the data section is determined to be 2 seconds, 5 seconds if it is 5 to 10 seconds, and 10 seconds if it is 5 seconds or less.
  • the numerical values and decision rules given here are merely examples of the basic rules in which the data interval is determined larger than when the current unprocessed value is small, as long as these basic rules are followed. Any number of other values and decision rules can be used as an embodiment of the present invention.
  • the size of the data interval may be determined according to the communication characteristics of the currently used wireless communication network, for example, the variation in signal strength.
  • the reception controller 113 periodically grasps the signal strength of the wireless communication network currently being used, and reflects it in determining the size of the data section as described above. In order to check the signal strength of the Wi-Fi network, the reception control unit 113 first requests information on the Wi-Fi network state from the operating system 100a.
  • the operating system 100a controls the Wi-Fi modem 2a to physically search the Wi-Fi signal band for this request, after which the Wi-Fi modem 2a is the corresponding signal band.
  • Reads identification information of each connection point provided when detecting a valid signal for example, a service set identifier (SSID) or a MAC address and a value of a received signal strength indicator (RSSI) of the connection point ( R11 of FIG. 2 is returned to the reception control unit 113, and the current signal strength of the Wi-Fi network can be known from the returned information.
  • SSID service set identifier
  • RSSI received signal strength indicator
  • the control unit 113 creates a request based on a communication protocol for requesting the determined section. This request is made by adding or modifying data point information designating the determined data section to the content of the request according to the communication protocol previously stored.
  • the reception control unit 113 designates the newly connected Wi-Fi network 11b and transfers the data to the data transmission / reception unit 112. request.
  • the data transmission / reception unit 112 requests the operating system 100a to generate a communication socket that uses the Wi-Fi network 11b, and the data transmission / reception unit 112 Through the communication socket generated according to the request, the request according to the communication protocol for requesting the data section determined for the unreceived data after the skip section (DgapT) is transmitted (S202).
  • This request is sent as a radio signal by the hardware resource for the Wi-Fi network (the Wi-Fi codec 2b / the Wi-Fi modem 2a), and this radio signal is transmitted by an access point that receives the signal.
  • the data is converted into data and routed to the content server 12 by a later communication network.
  • the content server 12 receiving the request transmitted to itself responds to the wireless communication terminal 100 through the Wi-Fi network 11b to which the request was transmitted, for the section requested in the request.
  • the data of this section is transmitted by the operating system 100a via the hardware resources (the Wi-Fi modem 2a and the Wi-Fi codec 2b) of the wireless communication terminal 100.
  • the data is transmitted to the transmission and reception unit 112 through the communication socket.
  • the data transmission / reception unit 112 has a path different from the data received through the communication socket currently generated for the cellular network 11a with respect to the data received through the communication socket (for example, a memory allocated differently).
  • the reception control unit 113 It is transmitted to the reception control unit 113 through the space), and at this time, it is informed to the reception control unit 113 as separate information on which communication socket the received data is received.
  • the reception control unit 113 generates a request according to a communication protocol for a section of content and requests the data transmission / reception unit 112 to transmit the data and the identifier of the communication socket that transmitted the section and the request. Since it is notified from 112 and mutually managed, it is determined from which communication socket the data block received from the data transmission / reception unit 112 belongs to which order section based on the management information. As it can be seen, when the section is divided from the content and received from the remote location, the order of moving to the reception buffer 113a for the corresponding data block is known.
  • the reception control unit 113 shows how a section is divided for content so that the corresponding section is requested through a communication socket and a wireless communication network, as illustrated in FIG. 7.
  • the section request list (61 1 ) in which information is recorded accordingly after the initial request (310 in FIG.
  • the type of wireless communication network designated for use by each communication socket is determined by the reception control unit 113 by knowing the default communication network to which the wireless communication terminal 100 is connected through network connection information or a multi-network connection state.
  • the identifier of the communication socket returned from the data transmission / reception unit 112 in response to a request for transmission of a request according to the communication protocol is designated by the user directly specifying the type of communication network to be used.
  • the communication socket can be stored in association with the type of wireless communication network premised to be used.
  • the reception control unit 113 receives data that is received through the cellular network 11a and moved to the reception buffer 113a based on the section request list 6 1 2 managed in the manner illustrated in FIG. 7. If N bytes from the start data of the content, from then on, the data received through the Wi-Fi network (11b) by moving to the receiving buffer 113a, the content is received divided into a section through a plurality of communication networks Data is provided to the media processing unit 111 in that order.
  • the reception control unit 113 if you want to stop the data reception in the middle of the data interval that was originally requested through any wireless communication network, for example, as shown in the example of FIG. If it is desired to receive up to N bytes in the wireless communication network after receiving a request, the identifier 611 of the communication socket is transmitted to the data transmission / reception unit 112 in order to stop data transmission from a remote place through the communication network. You can also request the close of the corresponding communication socket while providing a.
  • the data of the determined skip period DgapT is received through the cellular network 11a which has previously received content data, and all (or part) of subsequent data is further used. It is received through the Wi-Fi network 11b (S203) and is provided to the media processing unit 111 in accordance with the data order.
  • data reception through the Wi-Fi network 11b may overlap 340 with the data reception time of the skip period DgapT in time as illustrated in FIG. 4.
  • the reception control unit 113 additionally uses any one of the wireless communication networks (as described above, while using the cellular network 11a alone, the Wi-Fi network which is another wireless communication network ( 11b) is additionally used by being in a connected state, or while a wireless network is being used in connection with a plurality of wireless communication networks, the cellular network may be disconnected due to lack of reception speed or the like.
  • a request for specifying this last data section is abbreviated as a "following section request.”
  • Receiving the data for a section requested through a wireless communication network other than the wireless communication network to which the post-section request is transmitted (hereinafter, a request specifying this section is called a "preceding section request"). It continuously checks whether or not to receive (S204).
  • FIG. 8 schematically illustrates the relationship between the preceding section request 710 and the later section request 720.
  • the wireless communication network to which the request according to the communication protocol corresponding to the pre-section request 710 is transmitted is referred to as a "first network” and the post-period request (
  • a wireless communication network on which a request according to a communication protocol corresponding to 720 is transmitted is referred to as a "second network.”
  • the first network may be the cellular network 11a or the Wi-Fi network 11b
  • the second network may correspond to the Wi-Fi network 11b or the cellular network 11a correspondingly.
  • each dotted line section 711, 721 is shown to designate up to the last data point 71 of the corresponding content, it is not necessary to do so, and may also designate up to the last previous arbitrary data point. According to the correlation between the preceding section request and the later section request, the later section request and the section request may naturally overlap each other in the requested data section.
  • the first content entire section request 310 through the cellular network 11a is generated.
  • the request section 710 corresponding to the pre-section request 710, and the request 320 through the newly-connected Wi-Fi network 11b for the data section from after the skip section DgapT, the request section 720 Corresponds to
  • Whether the data received by the pre-segment request 710 corresponds to a current network switched state (hereinafter, referred to as a "network switched reception required state") is determined according to various conditions. This will be described in detail below.
  • the second network is a Wi-Fi network (that is, the first network is a cellular network)
  • the first network is a cellular network
  • the reception control unit 113 receives a first data rate 821 received from a remote location through a second network in response to a back section request 820. If it is faster than the data rate 811 received through the network, it is determined that the data received by the line segment request 810 as a network switching reception required state (S210).
  • the reception control unit 113 When there is such a state determination (80), the reception control unit 113, the determination of the post-section request from any point of the unreceived data in the designated section by the pre-section request 820, which is determined at the time of the determination
  • a special transmission is made to the data transmitting / receiving unit 112 while creating a request according to a communication protocol specifying a section up to the start point of the designated section (hereinafter referred to as “waiting section”) by 820.
  • a request is made (830). 9, an example in which a section 81 is determined from immediately after the last data received by the pre-section request 810 to a start point of a designated section by the post-section request 820 is illustrated as the waiting section.
  • the waiting section does not necessarily need to be determined immediately after the last data received by the preceding section request 810, and the waiting section skips some data immediately after the last data received 81a. This skipped data will be received over the first network.
  • a request for specifying a section after the last data received by the preceding section request 810 is hereinafter referred to as an "interpolation section request" 830.
  • the interpolation interval request 830 may include more than the determined waiting period 81.
  • the interpolation interval request 830 may designate the starting point of the determined waiting period 81 up to the last data of the content.
  • the reception control unit 113 requests that further reception is stopped when data up to the waiting section 81 is received. For example, make sure that the communication socket is closed.
  • the above description may be equally applied to the interpolation interval request described in another embodiment.
  • the data transmission / reception unit 112 generates a transmission request for a request according to an arbitrary communication protocol from the reception control unit 113 for the same destination under the premise of using the same communication network, unless it is a special transmission request. If there is an existing communication socket (i.e., a local address and a remote address determined for a request by a communication protocol to be transmitted), the reception control unit (using the existing communication socket without generating a new communication socket) is used. 113) A request can be sent from the communication protocol requested, but in the case of a special request, even if there is such an existing communication socket, any request has been sent through the socket and a response to the request is being received.
  • an existing communication socket i.e., a local address and a remote address determined for a request by a communication protocol to be transmitted
  • the data transmission / reception unit 112 always requests the operating system 100a to create a new communication socket and the communication socket (after the above).
  • the request received from the reception control unit 113 is transmitted through a communication socket different from the communication socket that transmitted the section request 820.
  • the special transmission request interpolation interval request 830 is newly generated, and a new communication socket on the premise of using the second network is transmitted to the second network through the communication socket (S211).
  • the data transmission / reception unit 112 transmits the special transmission request that operates in this way to the data of the designated section by the interpolation section request 830. This is to immediately transmit the data regardless of whether the data of the designated section by the section request 820 is completed.
  • the reception control unit 113 requests the interpolation section request 830 to designate the waiting section 81 that originally belonged to the designated section by the line section request 810 in the same manner as described above.
  • the information of the section request list is described. Assuming that one list 6 1 exemplified in FIG. 7 is requested interval information before the interpolation interval request 830, after the interpolation interval request 830 is received, the information of the list is applied to the request. Is updated accordingly (62).
  • the new entry corresponding to the interpolation interval request 621 is additionally recorded and the entry is deleted from the section request list because no further information management is needed for the section request 810.
  • the reception control unit 113 requests the data transmission / reception unit 112 to close the communication socket (socket of the identifier socket_ID1) so that no more data is received in response to the line segment request 810.
  • the data reception rate (that is, the data rate received through the second network) according to the rear section request 820 is the data reception rate (ie, the first network) according to the pre-section request 810. If the data rate is faster than), it is determined that the network switching reception is required.
  • the pre-section request when the data reception speed according to the post-section request 820 is a predetermined multiple, for example, two times or more faster than the required speed of the currently playing content, the pre-section request ( The data received by 810 may be determined to be a network switching reception need state.
  • the data reception rate according to the post-section request 820 is a predetermined reference speed, for example, 2Mbps or more, it is determined that the network switching reception required state for the pre-section request 810. You may.
  • the reception control unit 113 when the reception control unit 113 completes reception of all data in the designated section by the rear section request 920 (901), the reception control unit 113 receives a network switch for the pre-section request 910. As determined as necessary, the interpolation interval request 930 determined as described above is transmitted to a communication network different from the communication network to which the line segment request 910 is transmitted as described above. Of course, even in this case, the reception control unit 113 requests a special transmission to the data transmission / reception unit 112 with respect to the interpolation interval request 930.
  • the reception control unit 113 is illustrated in FIG. 11.
  • the interpolation section request 1030 designating the waiting section 1031 of the line section request 1010 determines that the network switching reception is necessary for the designated section by the line section request 1010.
  • the reception control unit 113 also requests the data transmission / reception unit 112 for a special transmission with respect to the interpolation interval request 1030.
  • the pre-section is performed at a time point 901 at which data of a designated section received by the rear section request 920 is received. Even if there is a waiting section in the designated section by the request 910, unlike the case where the second network is a Wi-Fi network, the reception control unit 113 does not perform network switching reception for the waiting section.
  • the Wi-Fi network is an operation in consideration of a user's cost burden as it is due to a wireless communication usage environment in which a cost burden for using a data service is lower than that of a cellular network. However, if the user has set the operation environment setting information of the media player 110 to ignore the operation considering the cost benefit, the network switching reception operation may be performed for the waiting period.
  • the second network becomes the cellular network, as described above, while receiving content data using the Wi-Fi network alone, as illustrated in FIG.
  • the content is lower than the required speed or the amount of processing is not sufficient (1141)
  • the post-section request 1120 is generated as described above, data reception according to the post-section request 1120 may also be switched and received.
  • the reception control unit 113 transmits the rear section request 1120 through the cellular network 11a serving as the second network, and then receives the data according to the line section request 1110.
  • the reception speed is improved to maintain the predetermined upper limit reference value for a predetermined time, for example, 3 to 5 seconds or more, as illustrated in FIG. 12, the designated section by the rear section request 1120.
  • the request according to the communication protocol for converting the received data to the Wi-Fi network using the data according to the back section request 1120 is made (1160).
  • the request 1160 may be a request for specifying the last point of the corresponding content file (1161) without specifying only the unreceived data section 1152.
  • the reception controller 113 determines that the network switching reception is required, the size of the waiting period determined at the determination is If 0, the reception control unit 113 does not perform network switching reception for the line segment request. Alternatively, even when the waiting period is a certain size, for example, several tens of kBytes or less, the network switching reception may not be performed for the waiting period.
  • the reception control unit 113 may check whether the network switch reception required state for the pre-segment request at any time while the data according to the post-segment request is received, and if necessary, may perform the network switch reception as described above. In one embodiment according to the present invention, otherwise, it may be checked whether the network switching reception is required only when the data reception according to the post-section request is more than a predetermined reference value. For example, the reception control unit 113, when a predetermined amount of data, for example, 50% or 75% or more is received for a specified section by a request for a later section, confirms that the network switching reception required state is therefrom. You can start This embodiment may be applied only when the second network is a Wi-Fi network.
  • the reception control unit 113 while receiving content data using a plurality of wireless communication networks by requesting a plurality of data intervals through a plurality of wireless communication networks for a single content, the reception control unit 113 is requested. Continuously checking whether the data for the section is completed, and if the reception of any one section request is completed (S212), the next request for the corresponding content and determine the section and the wireless communication network to receive the data of the section. The request by the communication protocol for the determined section is requested to the data transmitting and receiving unit 112 to be transmitted through the determined wireless communication network (S213).
  • the operation of receiving content data using a plurality of wireless communication networks of the first network and the second network, and the network switching reception confirmation operation for the designated section by the pre-segment request are continuously performed (S203, S204). , S210, ..). This operation is stopped when all of the data is received for the content requested to be played by the user or when the play is requested to be terminated by the user (S220).
  • the reception control unit 113 may change the connection state of the wireless communication terminal 100 to a single connection state even if all data on the content are not received or there is no play end request. 3, the operation of the multi-network use mode illustrated in FIG. 3 is stopped, and the remaining data of the content is received using only the wireless communication network connected at the present time.
  • the single network may be a cellular network or a Wi-Fi network.
  • the former may be generated when the service radius of the Wi-Fi network 11b, which is connected due to spatial movement of the wireless communication terminal 100, is out of service, and the latter may be generated by the user's request. This may occur when data usage for the network 11a is stopped.
  • the data transmission and reception unit 112 and the reception control unit 113 were implemented in an executable entity such as an application for playing content, for example, a player.
  • the data transmission / reception unit 1222 and the reception control unit 1223 may be executed as a separate execution object from a media processor for playing content, for example, the media player 1210. It may be included in the implemented media relay 1220.
  • the media processor may also use the decoder 8 which is a hardware resource of the wireless communication terminal 100 to decode content data.
  • the media relay 1220 also performs the intended function by the main control unit 10 executing the corresponding command codes, and may be implemented as an independent application, or may be implemented in the form of middleware or a platform. Of course, as described above, the media relay 1220 may include hardware as a part of the configuration.
  • the reception control unit 1223 uses a local memory 1223a and an internal socket 1202 as data channels for transmitting and receiving content data with the media player 1210 which is executed independently of the reception control unit 1223. It constitutes (c121). For example, a space for temporarily storing data received from the data transmission / reception unit 1222 to the media player 1210 is allocated to the memory 7, and also to the operating system 100a. Request to cause the internal socket 1202 to be created.
  • the internal socket has the same structure as a socket, which is a logical entity of information that the operating system 100a generally needs for data communication with an external counterpart, except that a source and a destination designated for the socket are designated.
  • the reception control unit 1223 receives the interval data of the content received through the communication socket for communicating with an external server and transmitted from the data transmission / reception unit 1222, to the local memory 1223a. After the temporary storage with the information in order or in order, the section of the stored content is read in order to correspond to the generated internal socket 1202 and the internal socket 1202, the media player ( 1210 is provided to the media player 1210 through an internal socket 1201. Meanwhile, the reception control unit 1223 may be configured when the corresponding internal socket generation request from the operating system 100a is generated in response to the internal socket request of the media player 1210. .
  • the data transmission / reception unit 1222 and the reception control unit 1223 perform the same operations as the operations described with respect to the data transmission / reception unit 112 and the reception control unit 113 in the above-described embodiments, except that the present embodiment
  • the reception control unit 1223 according to an example differs in that it uses a local memory 1223a and an internal socket 1202 as data channels in transferring the received content data to the media player 1210. I just do it.
  • the amount of unprocessed data described in the above-described embodiments is determined from the amount of data not yet provided to the media player 1210 through the internal socket 1202 in the local memory 1223a. .
  • the reception control unit 1223 uses a single network for the request or uses a plurality of networks as described above ( That is, according to the multi-network usage mode of the flowchart illustrated in FIG. 3), data of the corresponding content may be received from a remote location, and if necessary, the network switching reception operation may be performed for the request for the entire network. Then, for the section data received and stored in the local memory 1223a, by calling the appropriate mediation of the operating system 100a, the media player 1210 is delivered to the media player 1210 in the order of the sections as described above. Or transfer the order information about the sections through the internal socket 1202 along with the section data according to a predetermined method with the media player 1210 so that the media player 1210 can use the decoding in the order of the sections. do.
  • the internal sockets 1201 and 1202 between the media player 1210 and the media relay 1220 may have a specific IP address designated to indicate that the operating system 100a is an internal IP address, for example, “127.0.0.1. "Or” localhost "and the port number assigned to the counterpart application or process for which an internal socket is to be created are generated between the two applications or between the processes.
  • the reception control unit 1223 is a data channel used to sequentially provide content data to an external execution object, for example, the media player 1210, and is provided through an internal communication socket.
  • An inter-process communication (IPC) method supported by the operating system 100a may be used instead of the method.
  • a wireless communication network used together by a wireless communication terminal for a wireless data service as an example of the Wi-Fi network, which is a high-speed wireless LAN, by way of example specifically Explained.
  • the principles and concepts of the present invention in addition to the Wi-Fi network, the cost of using the data service, or the cost excluding the fixed cost as described above is less than the cellular network (ie less costly to the user) If there is another kind of non-cellular wireless communication network, it can be applied to the use of a plurality of wireless communication networks including the communication network as it is, so that the data network to be applied is different from the communication network exemplified herein. The scope of rights by scope cannot be excluded.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un terminal de communication sans fil qui : envoie, à un serveur externe, une première requête demandant une première section désignée pour un contenu sélectionné par un utilisateur (par exemple, une requête HTTP) sur un premier réseau de communication sans fil; envoie, au serveur externe, une deuxième requête demandant une deuxième section, dans laquelle un point sautant une section sautée pour des données qui n'ont pas été reçues dans la première section est désigné à titre de point de départ, sur un second réseau de communication sans fil; et envoie, au serveur externe, une troisième requête demandant une section située après des données reçues dans la première section sur le second réseau de communication sans fil lorsqu'un état de réception de données correspond à une condition de commutation de réseau utilisé de la première section après que la deuxième requête a été envoyée au serveur externe. Lorsqu'il est déterminé si l'état de réception de données correspond à la condition de commutation de réseau utilisé de la première section, différentes conditions sont appliquées en fonction du type du premier réseau de communication ou du second réseau de communication.
PCT/KR2014/003434 2013-05-28 2014-04-18 Procédé de commande de réception de données pour du contenu distant sur de multiples réseaux de communication sans fil, et appareil correspondant WO2014193083A1 (fr)

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KR10-2013-0060509 2013-05-28
KR20130060509A KR101409170B1 (ko) 2013-05-28 2013-05-28 원격지 컨텐트에 대한 복수의 무선 통신망을 통한 데이터 수신을 제어하는 방법과 그 방법을 위한 장치

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