On November 1, 2004, China Unicom officially launched a new download-based value-added service based on Java technology on its high-speed CDMA network, providing novel, unique Java application services for China's CDMA users.
China Unicom has built the world's largest CDMA mobile communication network with more than 2 million CDMA users. The maximum feature of CDMA 1X technology is to have high-speed data transmission capability. The network transmission rate is up to 153.6kbps (compared to the actual rate of GPRS networks, between 2kb ~ 4kb / s), high-speed CDMA 1x network It is an excellent carrier that carries data services.
Open Java technology is also amazing in the wireless field, and the potential is huge. Java has a cross-platform feature, Java's service and content is very broad, and the number of Java developers is extremely considerable, and these advantages have made wireless Java to be well received, developed rapidly, and all famous mobile operators, mobile phones. Manufacturers, technical providers, content developers have joined them:
China Unicom naturally saw this, and the implementation and application of wireless Java technology has been put into huge energy and enthusiasm, and Unija is born.
At the beginning of Unija's design, China Unicom carefully examined, earnestly analyzed the characteristics, pros and cons, and development trend of domestic and foreign wireless Java business, and determined to create a technical platform with complete independent intellectual property rights in conjunction with its own business. Thus, Unija is a unified wireless Java technical system with Unicom characteristics in Java / J2ME as cornerstone, combined with CDMA mobile phones and wireless data services.
Overall, UNIJA is composed of a technical specification system, test and development tool series, terminal implementation plan and application download support system, including Java Specification JTWI (Java Technology For Wireless Industry), Digital Copyright Protection DRM (in Commissioning Open Mobile Alliance specification) Unicom Specific Features Requires API Specification (CUCL), and other Unicom specified requirements, with consistent user interface (UI), unified programming interface (Programming API), a complete OTA download environment. The launch and establishment of the UNIJA technical system will help Unicom CDMA mobile networks have more clearly develop environment and goals more rapidly to provide equipment and applications for this market.
Following the leading consistent characteristics of China Unicom technology, Unija has the world's first J2ME technology platform that is fully compliant with JTWI (Java Technology for Wireless Industry), with a greater technical leader relative to the other major wireless Java technology systems. Most of the Java mobile phones are currently using MIDP 1.0 technology, functionality and performance. In contrast, UNIJA adopts the latest results of J2ME - JTWi technology launched in July 2003, has brought a lot of new enhancements, and there is also a big improvement in performance. JTWI provides a lot of differences and highly portable wireless Java applications that greatly reduce differences by providing many critical functions in a standard application environment. JTWi1.0 mainly includes CLDC 1.0, MIDP2.0, WMA1.1, where MIDP 2.0 serves as a new generation of MIDP, which adds a series of necessary and appreciated features for MIDP 1.0, such as facilitating games. Development, new GAME class; support HTTPS and SSL to strengthen security; support network connection via Socket / DataGrams; support sound and video, etc. It can be expected that the Java mobile phone that supports MIDP2.0 will gradually replace the MIDP1.0 mobile phone, and its application scope will also extend to more areas.
Compatibility has always been a difficult problem in the field of mobile data value-added, and UNIJA is intended to build a unified platform to reduce or eliminate difficult compatibility between terminals and applications. To this end, UNIJA provides a unified Java operating environment, providing a unified Java development tool, providing unified Java development tools, unified terminal testing and application testing, to ensure compatibility between terminals and applications as much as possible. . Unija's ideal is that the mobile phone that meets the Unija specification will be a real cross-platform Java mobile phone, using the Java app developed by Unija SDK will get a more wide range of terminals, so that "Write once at any time at any time at any time "In the device." Unija has a hard work in how to meet other data services, reaching mutual assistance. The application download of the UNIJA technology platform is downloaded by WAP discovery, HTTP download. Compared with the BREW, HTTP discovery is used, this way of unija's close cooperation with WAP fully utilizes convenience, colorful, friendly interaction, etc., which greatly enhances the user experience; at the same time, it will be ingenious. Developing a rapid WAP business and Java business closely combined with two major business interactions and mutual assistance. In addition, Unija also includes WMA technology that supports SMS functions. So, CP can develop Java programs with SMS functions, and make full use of the SMS business with very masses of masses, open up a broader space.
The other two important topics for mobile value-added services are security and user convenience. Unija guarantees the security of the business through a series of measures, such as the security of the application, adopts the international advanced 2048-bit signing encryption algorithm; the use of key APIs that can cause safety hazards passed certificates and authorizations; Encrypted transmission protocols such as SSL ensure security of data transmission, and the like. At the same time, in order to facilitate the user's use, a unified user UI is used to enhance the user's experience, reduce the re-learning time after the user change process; support shortcut operation, provide an input application's index number one-button positioning download function, etc.
At the same time, China Unicom attaches great importance to the protection of knowledge, based on OMA (Open Mobile Alliance) organization, which has been introduced to the new OMA DRM 1.0 technical system, combined with Unicom value-added business development needs, has established an internationally leading level DRM with complete independent intellectual property rights ( Digital Rights Management and Management) The system is intended to combat piracy, protect the intellectual property rights of digital content, maintain the rights of content developers, regulate the wireless network data business market, and bring flexible consumption patterns and convenience to users. Consumption means, thus stimulating the development of CP, promoting the healthy development of UNIJA applications and business.
It is based on these characteristics and advantages of Unija, major CDMA mobile phone manufacturers, content developers and service providers at home and abroad, have expressed its strong interest in China Unicom Unija business and UNIJA technology platform. At present, Motorola, Samsung and LG in the main manufacturer of CDMA mobile phones have launched terminals with UNIJA technology; at the same time, many content developers have developed hundreds of rich colorful unija development tools using China Unicom unified. UNIJA application. I believe that with the continuous development and improvement of Unija, China Unicom CDMA users will fully experience the enjoyment and convenience of Unija technology.
