WO2011010601A1 - ゲートウェイ装置、データ変換方法およびプログラム - Google Patents
ゲートウェイ装置、データ変換方法およびプログラム Download PDFInfo
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- WO2011010601A1 WO2011010601A1 PCT/JP2010/061990 JP2010061990W WO2011010601A1 WO 2011010601 A1 WO2011010601 A1 WO 2011010601A1 JP 2010061990 W JP2010061990 W JP 2010061990W WO 2011010601 A1 WO2011010601 A1 WO 2011010601A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1023—Media gateways
- H04L65/103—Media gateways in the network
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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
- H04L67/04—Protocols specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
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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
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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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
- H04L67/2866—Architectures; Arrangements
- H04L67/30—Profiles
- H04L67/303—Terminal profiles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
- H04L69/085—Protocols for interworking; Protocol conversion specially adapted for interworking of IP-based networks with other networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
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- 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
- H04W88/16—Gateway arrangements
Definitions
- the present invention relates to a gateway device, a data conversion method, and a program, and in particular, when there is a request from a mobile terminal within a cell area of a femtocell access point installed in a home or the like, content on the Internet or other network is transmitted.
- the present invention relates to a gateway device, a data conversion method, and a program that are transmitted to the portable terminal.
- femtocell access points installed in homes, connected to mobile IMS (IP Multimedia Subsystem) networks, etc., and communicating with mobile terminals in homes (for existing base stations and small base stations) In order to indicate that the cell area is relatively small, it is also called “ultra-small base station”).
- NGN Next Generation Network
- NGN IPTV Internet Protocol TeleVision
- end users can receive content including video and audio at home, but in the future, these content will not only be transmitted to TV but also to femto. It is expected to go in the direction that can be received even by a portable terminal in the home via a cell access point.
- Patent Document 1 a user of a viewing terminal connected to a network, a distribution content in a distribution server connected to the network is notified to the viewing terminal as content held by the viewing terminal, and the viewing terminal acquires the distribution content.
- An AV gateway device is disclosed that acquires distribution content corresponding to a request from a viewing terminal, converts the viewing content into a data format that can be received by the viewing terminal, and transmits the data to the viewing terminal.
- Patent Document 2 discloses user agent information, user information (User-Profile), self-care information (Selfcare-Profile), and mobile terminal information (UE-Profile) when the mobile terminal (UE) acquires content. ), And transmits the content acquired from the origin server in response to the content request (HTTP Req) sent by the mobile terminal to the mobile terminal in the profile information.
- an information management server that performs conversion so that the performance and capability of a mobile terminal can be fully utilized by referring to parameters indicating the performance and capability.
- the ability to reproduce varies greatly from terminal to terminal. For this reason, if at least one of codec, screen size, bit rate, protocol, file format, etc. differs between video and audio content distributed from a distribution server, Web server, IPTV, etc. and the capability of the mobile terminal, There is a problem that the mobile terminal cannot decode or display the content.
- IPTV IP-based content distributed by services such as IPTV is premised on playback and display on a TV screen, so even if you try to distribute it to a mobile terminal in your home via a femtocell access point, It cannot be played back or displayed.
- the AV gateway device of Patent Document 1 does not have a function of performing conversion corresponding to various portable terminals.
- the information management server of Patent Document 2 is also a service for subscribers of a specific mobile communication carrier, and requests the origin server for content that matches the performance and capability of the mobile terminal, If content that matches the ability cannot be obtained, transcoding is stopped.
- a control signal conversion unit that receives a request message for a stream or a file from a mobile terminal via a femtocell access point, performs necessary conversion, and transfers the request message to the request destination;
- a capability table storing capability information of the mobile terminal, a packet receiving unit that receives a stream or a file from the request destination, and referring to the capability table, the conversion contents according to the capability information of the requesting mobile terminal
- a gateway device is provided.
- a second aspect of the present invention receiving a stream or file request message from a mobile terminal via a femtocell access point, performing a necessary conversion, and transferring the request message to the request destination;
- Receiving a stream or a file referring to a capability table storing capability information of various portable terminals, determining a conversion content according to the capability information of the mobile terminal of the distribution request source, and according to the conversion content
- a data relay method including the step of converting the stream or file received from the request destination and the step of sending the converted stream or file to the mobile terminal.
- This method is a gateway device that accepts a stream or file request message from a mobile terminal, transfers it to a request destination after performing a required conversion, and transfers the stream or file transmitted from the request destination to the mobile terminal. It is tied to a specific machine.
- a process of receiving a stream or file request message from a mobile terminal via a femtocell access point, performing necessary conversion, and transferring the request message to the request destination Processing for receiving a stream or file, processing for determining conversion content according to capability information of a mobile terminal that is a distribution request source with reference to a capability table storing capability information of various mobile devices, and according to the conversion content
- This program can be recorded on a computer-readable storage medium. That is, the present invention can be embodied as a computer program product.
- the present invention it is possible to view video and audio content via a femtocell access point on any portable terminal without worrying about the capability and model of the portable terminal.
- the gateway apparatus 110 receives a stream or file request message from a mobile terminal via a femtocell access point, performs a necessary conversion, and then transfers it to a request destination.
- Unit 111 capability table 118 storing capability information of two or more types of mobile terminals preselected from a mobile phone, PHS, notebook PC with built-in mobile data card, game machine with built-in mobile data card, and the like from the request destination
- a packet receiving unit 112 that receives a stream or a file
- a conversion instruction unit 117 that determines conversion content according to capability information of a mobile terminal that is a distribution request source with reference to the capability table, and the request according to the conversion content
- a conversion unit 119 for converting the stream received from the destination or the file;
- a packet transmission unit 116 for transmitting the converted stream or file to the mobile terminal.
- the gateway device 110 When there is a request from a portable terminal within the range of the femtocell access point installed in the home, the gateway device 110 is requested from the request destination (Internet, NGN, other distribution server, content server, web server, etc. on the network). A stream or file including at least one of video and audio is read, the stream or the file is converted from the capability table according to the conversion content according to the model or capability information of the mobile terminal, and the femtocell After converting to the access point protocol, it is sent to the previous mobile terminal.
- the request destination Internet, NGN, other distribution server, content server, web server, etc. on the network.
- a stream or file including at least one of video and audio is read, the stream or the file is converted from the capability table according to the conversion content according to the model or capability information of the mobile terminal, and the femtocell After converting to the access point protocol, it is sent to the previous mobile terminal.
- a femtocell access point in the home As described above, it is received via a femtocell access point in the home, and is played back / displayed on a mobile terminal of a preselected type, such as a mobile phone, PHS, a notebook PC with a built-in mobile data card, a game machine with a built-in mobile data card It becomes possible.
- a mobile terminal of a preselected type such as a mobile phone, PHS, a notebook PC with a built-in mobile data card, a game machine with a built-in mobile data card
- FIG. 2 is a diagram showing a connection configuration according to the first embodiment of the present invention.
- a solid arrow represents a data flow
- a broken arrow represents a control signal flow.
- Reference numeral 150 in FIG. 2 indicates the home of the user of the mobile terminal 170 (hereinafter referred to as “in-house 150”).
- the femtocell access point 200 is installed in the home 150 and can be wirelessly connected to a mobile terminal 170 located nearby in the femtocell area.
- the femtocell access point 200 is connected to a local IP (Internet Protocol) network 135 and is connected to the mobile IMS network 130 via the IP network 135.
- the network 130 may be BB (broadband network), NGN (Next Generation Network), the Internet, and the like, but in the following, it will be described as being BB (broadband network).
- the gateway device 110 is arranged on the mobile IMS network 130 and connected to the in-house femtocell access point 200 via the IP network 135.
- the mobile terminal 170 that connects to the femtocell access point 200 and receives video content
- various devices such as a mobile phone, a PHS, a mobile data card built-in notebook PC, and a mobile data card built-in game machine can be used. In the following description, it is assumed that a mobile phone is used.
- the mobile terminal 170 connects to the femtocell access point 200 and performs authentication processing with the web server 120. For example, when it is desired to view the content on the distribution server 190 on the Internet network 140 after the authentication is successful, an operation for selecting the content to be viewed is performed on the content selection screen provided from the web server 120.
- the web server 120 performs an authentication process in response to an authentication request from the mobile terminal 170. If the authentication is successful, the web server 120 outputs a notification of successful authentication to the gateway device 110 and a content selection result received from the user of the mobile terminal 170 and also receives the reception of the gateway device 110 to the mobile terminal 170. Notify IP address. Thereafter, the mobile terminal 170 issues a connection request to the femtocell access point 200, and the femtocell access point 200 issues a connection request to the gateway device 110.
- the protocol used for the connection request by the mobile terminal 170 is HTTP (Hyper-Text Transfer Protocol) over TCP (Transmission Control Protocol) / IP (Internet Protocol), but SIP (Session Initiation Protocol) is used. You can also
- a connection request can be made from the portable terminal 170 using a request command.
- the gateway device 110 converts an HTTP request command into, for example, a SIP Invite message, and transmits it to a CSCF (Call Session Control Function) 137.
- CSCF Common Session Control Function
- the CSCF 137 is a device corresponding to a SIP server, receives an Invite message, and sends it to the converter 138.
- the converter 138 is a device that performs conversion between SIP and RTSP (Real Time Streaming Protocol). For example, the converter 138 converts a SIP message into an RTSP Setup command and sends it to the distribution server 190.
- RTSP Real Time Streaming Protocol
- the distribution server 190 receives the RTSP Setup command and distributes the file or stream storing the requested video content to the gateway device 110.
- FIG. 3 is a diagram illustrating a configuration of the gateway device according to the first embodiment of this invention.
- control signal conversion unit 111 the packet reception unit 112, the transcoder unit 113, the file conversion unit 114, the protocol conversion unit 115, the packet transmission unit 116, the conversion instruction unit 117, and the capability
- a gateway device 110 having a table 118 is shown.
- the control signal converter 111 receives the authentication completion notification and the content selection result from the web server 120, and sends an HTTP request command sent from the mobile terminal 170 to the GTP-C (General packet radio Service Tunneling Protocol) from the femtocell access point 200. C-Plane) packet is received.
- GTP-C General packet radio Service Tunneling Protocol
- the control signal conversion unit 111 extracts the HTTP request command stored in the payload part of the GTP-C packet, and reads the terminal type information described in the user agent header of the HTTP request command, so that the terminal of the mobile terminal 170 Specify the model.
- the terminal model information includes a mobile phone manufacturer and a format. Then, the control signal conversion unit 111 outputs the terminal model information to the conversion instruction unit 117.
- control signal converter 111 converts the HTTP request command received in the GTP-C packet received from the femtocell access point 200 into, for example, a SIP (Session Initiation Protocol) Invite message, and the CSCF (Fig. 2 CSCF 137).
- SIP Session Initiation Protocol
- the packet receiving unit 112 receives a file or stream corresponding to the requested video content from the distribution server 190 on the Internet network 140, extracts the stream stored in the file, and outputs it to the transcoder unit 113. Further, the packet receiving unit 112 stores content information stored in the content file (for example, video compression encoding method, video screen resolution, bit rate, frame rate, video content time length, audio compression encoding). System, time length of the audio content, etc.) and output to the conversion instruction unit 117.
- content information stored in the content file for example, video compression encoding method, video screen resolution, bit rate, frame rate, video content time length, audio compression encoding. System, time length of the audio content, etc.
- the conversion instructing unit 117 reads out the capability information of the model corresponding to the terminal model information received from the control signal converting unit 111 from the capability table 118, and based on the capability information and the content information received from the packet receiving unit 112. Thus, the transcoder unit 113 determines what conversion is to be performed.
- the capability table 118 includes (1) an acceptable codec, (2) a screen resolution, (3) a frame rate, (4) an acceptable file format and file size, and (5) a reception protocol for each model of the mobile terminal 170. , Etc. are stored in advance.
- content information indicating that the video content distributed from the distribution server 190 is compression-encoded with MPEG-2 MP (Main Profile) 8 Mbps and the screen resolution is SD (720 x 480 pixels) frame rate is 30 fps. It is assumed that it has been output. Further, it is assumed that terminal model information indicating that the mobile terminal 170 is a new mobile phone is output.
- the conversion instruction unit 117 converts the content to match the capability information of the terminal. Conversion contents (for example, MPEG-2 MP decoding, converting the screen resolution from SD to QVGA, encoding at H.264 512 kbps, 30 fps, etc.), and outputting the conversion contents to the transcoder unit 113, etc. .
- the read capability information is output to the file conversion unit 114, the protocol conversion unit 115, and the packet transmission unit 116.
- the transcoder unit 113 receives the stream extracted from the packet reception unit 112, converts the above-described conversion content (for example, MPEG-2 MP decoding from the conversion instruction unit 117, converts the screen resolution from SD to QVGA, 264 512 kbps, encoding at 30 fps, etc.), and operating a transcoder that operates in real time according to this, converting the stream (for example, MPEG-2 MP decoding of the received stream, and screen resolution from SD QVGA, H.264, 512 kbps, encoding at 30 fps, etc.), and the converted stream is output to the file conversion unit 114.
- the conversion content for example, MPEG-2 MP decoding from the conversion instruction unit 117, converts the screen resolution from SD to QVGA, 264 512 kbps, encoding at 30 fps, etc.
- the file conversion unit 114 inputs the capability information of the portable terminal 170 from the conversion instruction unit 117, inputs the stream after conversion from the transcoder unit 113, and carries the mobile via the femtocell access point 200 according to the capability information.
- the stream is converted into a file format to be sent to the terminal 170.
- the file format includes, for example, 3GPP, 3GPP2, and MP4, and the allowable file format differs depending on the model of the mobile terminal. Therefore, the file conversion unit 114 determines which file format is to be used according to the capability information, generates a file according to the determined file format, stores the converted stream therein, and converts the file into a protocol Output to the unit 115.
- details of the 3GPP file format can refer to the 3GPP TS26.244 standard.
- the protocol conversion unit 115 inputs the capability information from the conversion instruction unit 117, determines a protocol that can be received by the femtocell access point 200, and uses the protocol to transmit the file input from the file conversion unit 114 to the packet transmission unit 116. To send.
- GTP-U GPRS Tunneling Protocol U-Plane
- the protocol conversion unit 115 outputs the file format read by the GTP-U / UDP / IP protocol to the packet transmission unit 116.
- 3GPP standards TS25.467 v8.0.0 can be referred to.
- the packet transmission unit 116 inputs the capability information from the conversion instruction unit 117, inputs the protocol and file format from the protocol conversion unit 115, and transmits the Iu-h interface to the femtocell access point 200 via the IP network 135. GTP-U / UDP / IP packet is sent out.
- the femtocell access point 200 inputs a packet by the Iu-h interface, converts it to a Uu interface that regulates wireless transfer, and wirelessly transmits it to the mobile terminal 170.
- the mobile terminal 170 receives the content file stored in the packet from the femtocell access point 200 through the Uu interface, extracts the stream from the file, performs decoding, reproduction, and display.
- the content can be decrypted and displayed without modifying various portable terminals (mobile phone, PHS, notebook PC with built-in mobile data card, game machine with built-in mobile data card, etc.) in the home 150. It becomes possible.
- the gateway device 110 shown in FIG. 3 is adapted to the content including the video on the distribution server such as on the Internet or NGN, or the IPTV service so as to conform to the capability information of the mobile terminal 170 used for viewing.
- the content is assumed to be reproduced / displayed on a TV to be provided, and then distributed to the femtocell access point 200 after being converted.
- FIG. 4 is a diagram showing a connection configuration according to the second embodiment of the present invention. 4, components having the same reference numerals as those in FIG. 2 perform the same operations as those in the first embodiment, and thus description thereof will be omitted. Differences will be described below.
- the distribution server 196 is arranged in the NGN 195 and functions as an IPTV server provided by the IPTV broadcast service through the NGN 195. That is, the distribution server 196 distributes IPTV content including video / audio via the NGN 195.
- the distributed content is received by the home router 199 in the home 150, decrypted by the set top box 198, and displayed on the television (TV) 197.
- the gateway device 110 on the mobile IMS network 130 As in the first embodiment, the conversion is performed for the mobile terminal 170 and then transmitted to the femtocell access point 200 disposed in the home 150.
- the portable terminal 170 receives the decoded video / audio content through the femtocell access point 200, decodes it, and displays it.
- the IP network 135 of each embodiment described above may be not only a broadband network but also an NGN (Next Generation Network), the Internet, or the like.
- the transcoder unit 113 bypasses the file conversion unit 114, outputs it to the protocol conversion unit 115, converts the protocol into the RTP / UDP protocol, and transmits the packet.
- the RTP / UDP / IP stream may be tunneled by the GTP-U protocol from the unit 116 and sent to the femtocell access point 200.
- the gateway apparatus 110 decrypts the encryption when the packet reception unit 112 extracts the stream, and then transcodes the 113 It is possible to adopt a configuration that outputs to In this case, the gateway device 110 and the control signal conversion unit 111 obtain information on encryption / decryption from the distribution server 190 of the service provider, and send the encryption / decryption to the packet reception unit 112 via the conversion instruction unit 117. The structure which notifies the information regarding can be taken.
- the description has been made on the assumption that the moving image content obtained by compressing and encoding the moving image signal is viewed.
- the same effect can be obtained with the same configuration in the case of a still image or an audio signal. Obtainable.
- HSDPA High Speed Downlink Packet Access
- HSPA + High Speed Packet Access
- LTE Long Term Evolution X
- a mobile phone is used as the mobile terminal 170.
- the mobile terminal 170 is not limited to a mobile phone, but a PHS, a WiMAX terminal, a notebook PC or a mobile data card storing a mobile data card. It is also possible to use a game machine that stores.
- Home Node B or Home eNodeB can be used as the femtocell access point 200.
- the gateway apparatus 110 has been described as specifying the mobile terminal model using the terminal type information described in the user agent header of the HTTP request command. You may make it acquire a model information and capability information by interacting with a terminal. Further, the model is not limited to a narrow model such as a model number. For example, any model that can extract appropriate capability information from the capability table 118 may be used.
- Gateway device 110 Control signal conversion unit 112 Packet reception unit 113 Transcoder unit 114 File conversion unit 115 Protocol conversion unit 116 Packet transmission unit 117 Conversion instruction unit 118 Capability table 119 Conversion unit 120 Web server 130 Mobile IMS network 135 IP network 137 CSCF 138 Converter 140 Internet network 150 Home 170 Mobile terminal 190, 196 Distribution server 195 NGN 197 TV 198 Set Top Box 199 Home Router 200 Femtocell Access Point
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Abstract
Description
本発明は、日本国特許出願:特願2009-170016号(2009年7月21日出願)の優先権主張に基づくものであり、同出願の全記載内容は引用をもって本書に組み込み記載されているものとする。
続いて、本発明の第1の実施形態について図面を参照して詳細に説明する。なお、本実施形態では、動画コンテンツを配信する場合の例を挙げて説明するが、静止画、オーディオ、音声を配信する場合も同様の構成を用いることができる。
続いて、配信サーバ196がNGN上のIPTV放送サーバである本発明の第2の実施態について説明する。図4は、本発明の第2の実施形態の接続構成を示す図である。図4において、図2と同一の符号を付した構成要素は、第1の実施形態と同一の動作を行うので、説明を省略し、以下、相違点を説明する。
111 制御信号変換部
112 パケット受信部
113 トランスコーダ部
114 ファイル変換部
115 プロトコル変換部
116 パケット送信部
117 変換指示部
118 能力テーブル
119 変換部
120 ウェブサーバ
130 モバイルIMSネットワーク
135 IPネットワーク
137 CSCF
138 コンバータ
140 インターネット網
150 宅内
170 携帯端末
190、196 配信サーバ
195 NGN
197 テレビ
198 セットトップボックス
199 ホームルータ
200 フェムトセルアクセスポイント
Claims (16)
- フェムトセルアクセスポイントを介して携帯端末からストリームまたはファイルの要求メッセージを受け付け、所要の変換を施した上で要求先に転送する制御信号変換部と、
各種の携帯端末の能力情報を記憶した能力テーブルと、
前記要求先からストリームまたはファイルを受信するパケット受信部と、
前記能力テーブルを参照して、要求元の携帯端末の能力情報に応じた変換内容を決定する変換指示部と、
前記変換内容に従って、前記要求先から受信したストリームまたは前記ファイルの変換を実施する変換部と、
前記変換したストリームまたはファイルを前記携帯端末に送出するパケット送信部とを備えることを特徴とするゲートウェイ装置。 - 前記変換内容は、コーデック、ビットレート、画面解像度、フレームレート、ファイル形式、プロトコルのうちの少なくとも一つ以上の項目の変換を含む請求項1のゲートウェイ装置。
- 前記変換部として、ストリームまたはファイルのトランスコードを行うトランスコーダ部を含む請求項1または2のゲートウェイ装置。
- 前記変換部として、ストリームまたはファイルのファイル形式の変換を行うファイル変換部を含む請求項1または2のゲートウェイ装置。
- 前記変換部として、プロトコル変換を行うプロトコル変換部を含む請求項1または2のゲートウェイ装置。
- 前記能力テーブルには、携帯電話、PHS(Personal Handy-phone System)、WiMAX(Worldwide Interoperability for Microwave Access)端末、モバイルデータカード内蔵パーソナルコンピュータ、モバイルデータカード内蔵ゲーム機のうちの少なくとも2種類以上の携帯端末の能力情報が記憶されている請求項1から5いずれか一のゲートウェイ装置。
- 前記能力テーブルは、携帯端末の各機種の能力情報を記憶したテーブルであり、
前記変換指示部は、携帯端末から受信した機種情報に基づいて、前記能力テーブルから、当該携帯端末の能力情報を取得する請求項1から6いずれか一のゲートウェイ装置。 - 前記フェムトセルアクセスポイントとして、Home NodeBまたはHome eNodeBを介して携帯端末からストリームまたはファイルの要求メッセージを受け付け、前記Home NodeBまたはHome eNodeBを介して、変換したストリームまたはファイルを携帯端末に送信する請求項1から7いずれか一のゲートウェイ装置。
- フェムトセルアクセスポイントを介して携帯端末からストリームまたはファイルの要求メッセージを受け付け、所要の変換を施した上で要求先に転送するステップと、
前記要求先からストリームまたはファイルを受信するステップと、
各種の携帯端末の能力情報を記憶した能力テーブルを参照して、要求元の携帯端末の能力情報に応じた変換内容を決定するステップと、
前記変換内容に従って、前記要求先から受信したストリームまたは前記ファイルの変換を実施するステップと、
前記変換したストリームまたはファイルを前記携帯端末に送出するステップとを含むデータの中継方法。 - 前記変換内容として、コーデック、ビットレート、画面解像度、フレームレート、ファイル形式、プロトコルのうちの少なくとも一つ以上の項目の変換を行う請求項9のデータの中継方法。
- ストリームまたはファイルのトランスコードを行うトランスコーダ部を用いて前記変換を行う請求項9または10のデータの中継方法。
- ストリームまたはファイルのファイル形式の変換を行うファイル変換部を用いて前記変換を行う請求項9または10のデータの中継方法。
- プロトコル変換を行うプロトコル変換部を用いて前記変換を行う請求項9または10のデータの中継方法。
- 前記能力テーブルとして、携帯電話、PHS(Personal Handy-phone System)、WiMAX(Worldwide Interoperability for Microwave Access)端末、モバイルデータカード内蔵パーソナルコンピュータ、モバイルデータカード内蔵ゲーム機のうちの少なくとも2種類以上の携帯端末の能力情報が記憶されているテーブルを用いる請求項9から13いずれか一のデータの中継方法。
- 携帯端末から機種情報を受信し、携帯端末の各機種の能力情報を記憶した能力テーブルから、当該機種に応じた能力情報を取得して変換内容を決定する請求項9から14いずれか一のデータの中継方法。
- 前記フェムトセルアクセスポイントとして、Home NodeBまたはHome eNodeBを介して携帯端末からストリームまたはファイルの要求メッセージを受け付け、前記Home NodeBまたはHome eNodeBを介して、変換したストリームまたはファイルを携帯端末に送信する請求項9から15いずれか一のデータの中継方法。
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