Terminal Application Platform for IMS Services
Osamu Nakazawa Haruo Fukuda Kenji Matsuyama
As the popularity of third generation mobile phones Evolution of mobile phone (hereinafter referred to as “3G”) expands on a global services <
*1) ACCESS and NetFront are trademarks or registered trademarks of ACCESS Co., Ltd., in Japan and other countries. Other names of companies and products are trademarks or registered trademarks of the respective companies.
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society with full-scale IMS services. " Environment for converging with personal OAT was established in November 2005 to engage in computer internet world the business of developing and providing IMS application Services seamlessly converging personal computer platforms for ubiquitous terminals, such as mobile internet users and mobile phone users will be provided, phones and information appliances, which will play a role through interactive communications between IM which is in making the ubiquitous society a reality based on IMS increasing in popularity and continues to progress in the services. Almost a year and a half has passed since the personal computer environment and IM on mobile company was founded and as initially planned the first phones, as well as services for exchanging presence step towards the realization of IMS services has been information. Furthermore, since building an environment successfully taken through the supply of IMS application in which web services, such as searches and blogs platforms, which are used to attain the services provided over the internet and intended for personal described for the first phase, to domestic computer environments, are available to mobile phones, telecommunications carriers and mobile phone it is possible not only to merge the communication manufacturers. environments of personal computers and mobile phones but also combine them on the service level of information technology (IT). IMS world being attained by OAT, OKI and ACCESS # Converging environments with information appliance world The formulation of specifications for IMS services, A real-time communication environment is provided which will become industry standards, is being carried based on IMS for communications between information forward by 3GPP and OMA, previously described. appliances, as well as between information appliances However, since the range of standard specifications is and mobile phones. Furthermore, by using Digital Living limited to the IMS communication protocol, IMS network Network Alliance (DLNA) useful services could be and IMS service specifications, primarily for the mobile provided, such as viewing multimedia content, environment, the establishment of various expanded controlling, uploading and downloading between mobile services, such as linkups with the internet, which had phones and information appliances. This makes it been developed previously with a foundation based on possible to build a world where seamless convergence personal computers, as well as combinations with between mobile phones and information appliances can information appliances, are considered to be necessary take place, with links to IMS and DLNA. in order to establish and promote the progress of IMS services for the general public. Therefore, we expanded the range of IMS, as shown in Fig. 2, defining the “IMS Configuration of IMS terminal application world in a broad sense”. platform The three service models that comprise the “IMS In order to bring about a full-scale IMS service world in a broad sense” are described below. environment, as with the “IMS world in the broad sense”
IMS server illustrated in the previous chapter, application platforms DLNA server Web services IMS AP server are vital for converging advanced information and Video AP communications with communication broadcasting Combining with 3 control linkup Web 2.0 Combining information with PC internet technologies. appliance world world IMS/FMC DLNA Internet The configuration of a terminal application platform to DLNA IMS linkup 2 <> “NetFront*1) IMS Client Package” and “NetFront Media <
Oki Technical Review 33 April 2007/Issue 210 Vol.74 No.2 (1) NetFront IMS Client Package NetFront Media Player NetFront IMS Client Package This application platform is for building IMS services (comprised of an IMS core module and PC internet Media Player connection module). Support for one segment broadcasting [Protocol layer] This consists of the Session Initiation Support for DLNA VoIP calls Protocol (SIP), a communication protocol for realizing Support for various DRMs IMS services, as well as Message Session Relay OMAPoC Protocol (MSRP), a protocol for the translation Peer to AAC/AMR/MP3 Presence Peer (P2P). Furthermore, an internet linkup protocol for MPEG4/H.264 OMA presence PoC connections between mobile phones and personal WM Audio/Video computers is provided as an extension function. [Framework layer] A framework facilitating the easy Fig. 4 IMS product image building of IMS applications based on SIP and MSRP. [Service engine layer] This provides service engines for " Optimum implementation is integrated with presence, PoC, VoIP and IM. Phased extensions are NetFront Suite planned to create a visual communication environment • Porting costs are significantly reduced through the for Push to Video and IP videophones in the future. sharing of a standard porting layer for NetFront and the provision of API for flexible porting. (2) NetFront Media Player • Overall size of the memory is reduced through the This is one IMS service that provides a platform for sharing of a library for the internet, which is building display and management applications for provided by NetFront as a standard feature. multimedia content. • Integration is easy with various applications, such [Protocol layer] This consists of a real-time as browsers and emailers. communication protocol for multimedia streaming. # Converging environment for personal computers [Framework layer] A player framework for attaining local and information appliances completes FMC playback, streaming and the broadcast reception • Not only complies with 3GPP and OMA functions of multimedia content. specifications but is also a total solution for [Service engine layer] This provides Digital Right converting devices, which are not mobile phones, Management (DRM), DLNA and an engine for one such as personal computers and information segment broadcasting, including functions for linking up appliances, into IMS and FMC terminals. with voice and video software codec, as well as hardware codec. Example of configuration for services using DLNA Features of IMS terminal application platform We consider DLNA to be a critical technology for added value to accomplish IMS services. SIP and MSRP, The IMS platform product we present has already core technologies of IMS, enable an environment for been adopted by domestic communications carriers and distributing and sharing multimedia content, such as mobile phone manufacturers to facilitate the building of video and music, between mobile phones or between a their IMS services. The product has a track record in full- mobile phone and an information appliance. scale commercial implementations, starting from Furthermore, DLNA easily enables video services, such November 2006. Furthermore, communication carriers as viewing video content stored on home servers at and mobile manufacturers overseas have also decided to home on a mobile phone or viewing similar content on adopt our product, marking the beginning of a full-scale digital television sets or personal computers with large implementation as a solution that conforms to global display screens. Furthermore, multimedia content could markets. be exchanged between mobile phones and home servers Images of an application involving the incorporation of in both directions through the uploading or downloading our IMS platform on a mobile phone are shown in Fig. 4. of content. The image on the right side of Fig. 4 represents the We incorporated a component of DLNA, the Digital presence and PoC services of the NetFront IMS Client Media Player (DMP), into NetFront Media Player as a Package, whereas the image on the left side of Fig. 4 feature for viewing and listening to multimedia content on represents the NetFront Media Player. mobile phones, digital television sets and personal ! IMS industry standard software incorporates computers. This enabled us to accomplish the “NetFront flexible architecture that is portable and highly Living Connect”, a DLNA service solution integrating expandable functionally various DLNA features provided by ACCESS (Fig. 5). • Global specifications comply with the latest 3GPP and OMA specifications. • Object oriented model affords phased and easy expansion of IMS services to meet market needs.
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DMR the near future with the creation of a stable multimedia communication environment based on the integration of Portal services by the Service Delivery Platform (SDP) and (DMC screen) Digital television set Television on Op Instruction er DMC personal computer (PC) Quality of Service (QoS) guarantee, as well as the ati < on HTTP /disp building of an IMS network environment equipped with an /F lay Streaming playback las h> appropriate and flexible account settlement system to Browse accommodate services with authentication, authorization M-DMC M-DMP Home gateway and accounting (AAA). Operation M-DMD M-DMU Services for home appliances Viewing & Instruction Furthermore, we expect the convergence of listening M-DMS DMS information with communications to continue, along with M-DMC M-DMP engine engine Upload the convergence of IP-based communications with NetFront Download Home server DVR broadcasting, thereby furthering the combination of the Media Player mobile telephone environment, home appliance Fig. 5 Example of configuration for services using DLNA environment and personal computer internet environment. This, we believe, will lead to the popularization and securing of IMS services. We hope to Conclusion make contributions to such developments and to take This paper first presented an image of the “IMS part in the realization of a comfortable and universal world”, which is a service essential for creating a ubiquitous society. ubiquitous society followed by an introduction to the IMS application platform, necessary to build an IMS world. References The phased launch of commercial IMS services is currently starting in Japan, using the 3G network, 1) Gonzalo Camarillo, Miguel A. Garcia-Martin: “The 3G however, the situation overseas indicates that trial run IP Multimedia Subsystem (IMS)”, 2005, John Wiley & services have started, primarily in Europe. The IMS world Sons. illustrated in this paper will become a full-scale reality in 2) URL http://www.oki-access.com/ 3) Oba, K., and Nakazawa, O: “Concept of a Solution for Converging Information and Telecommunications by Oki Electric: AP@PLAT®”, Oki Technical Review, Issue 201, Vol. 21, No. 1, pp. 4 to 9, January 2004. 4) Sakamoto, A., and Nakazawa, O: “Paradigm Shift to Basic Glossary ‘Ubiquitous’ and AP@PLAT Application Platform”, Oki Technical Review, Issue 204, Vol. 72, No. 4, pp. 4 to 7, October 2005. ACCESS A software vendor providing NetFront Suite, which is embedding software to contribute towards the Authors ubiquitous society for non-personal computer areas of Osamu Nakazawa: OKI ACCESS Technologies Co., Ltd., the market, such as mobile phones and information President and CEO appliances. Haruo Fukuda: OKI ACCESS Technologies Co., Ltd., URL http://www.access-company.com/ Development Div., General Manager DLNA (Digital Living Network Alliance) Kenji Matsuyama: OKI ACCESS Technologies Co., Ltd., R&D Div., General Manager These standardized specifications are for interconnecting information appliances and personal computers over home networks to enable the exchange of multimedia content. NetFront Suite A general term used to represent a software platform for mobile phones and information appliances. The NetFront Browser and Mailer are well known platforms, with a history of installations in approximately 320 million units in the global market as of December 2006. NetFront IMS Client Package and NetFront Media Player are also service components comprising the NetFront Suite. One Segment A name for the broadcasting service available in the domestic market, intended for mobile devices delivered by land-based digital broadcasting, “Integrated Service Digital Broadcasting - Terrestrial” (ISDB-T).
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