International telecommunication union
Key elements of coexistent subsystem autonomy in UE architecture
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- 1 Development of a multi-standard RF module using RF MEMS components
- 2 A new RF solution with SDR technology
- An example of a new innovative user interface
3.1 Key elements of coexistent subsystem autonomy in UE architectureSome common elements required for these architectures are: - The architecture is open – The autonomous subsystems are connected by open physical and logical interfaces, and support a wide range of operating systems, execution environments, and air interfaces. Open interfaces enable and foster competition of multiple vendors of the subsystems, and allows hardware and software development to evolve more rapidly and independently at their own pace thereby ensuring a continuous steam of innovative solutions at the lowest cost. - The architecture is flexible and adaptive – High levels of modularity, allowing each module to be independently tested and reused across many different systems. A modular design incorporates the ability to integrate new hardware and software features as industry standards and market needs evolve.
RF MEMS 1 Development of a multi-standard RF module using RF MEMS componentsAs IMT 2000 services are about to be commencing, backward compatibilities with PCS, CDMA, or etc., are becoming necessary and then multiband/multi-standard terminals will appear on the stage. With the existing technologies, multiband/multi-standard terminals will be bulky and expensive. Therefore, we can use MEMS technology to develop an RF module that could be applicable for various frequencies with compact and flexible structures. Furthermore, an intelligent RF module for beyond IMT 2000 terminals based on SDR will be needed. This technology can yield small size, light weight, low power and high performance to replace discrete passive RF components so that we can produce a flexible and compact RF module for multiband/multi-standard terminals. Table 5 shows the characteristics of each component when RF MEMS technology is used. table 5
Characteristics of an RF module using RF MEMS technologies
2 A new RF solution with SDR technologyFor beyond IMT 2000 terminals based on SDR, we need a more complex multi-standard RF module, applicable for multi-standards systems, such as GSM, DCS1800, PCS, W-PAN based on TDD and CDMA, PCS, IMT 2000 based on FDD. RF MEMS technology would be a fruitful solution for multi-standard terminals. Figure 36 shows a basic SDR system block diagram. If this system is only composed of existing components, several RF modules will be needed, resulting in a huge volume, heavy weight and high cost. On the other hand, taking MEMS components such as programmable LNA, tunable filter, programmable complicated switch, programmable PAM and so on, we can simply make a competitive product with small volume and light weight which also can be related to future terminals and will be a solution for RF systems in future wireless mobile systems. Figure 36
Figure 37 shows a new concept for a future terminal, which makes a system on a single chip package, combining the RF section with the signal processing section in one package. With existing technologies, this conceptual terminal cannot be implemented. However, when a multiband RF module with RF MEMS technology is accomplished, it would be possible to make an RF module with SDR technology as shown in Fig. 37, RF section. What is more, a future terminal on a single chip package can be realized. Figure 37 Future terminal concept with new RF solution Annex 13 New innovative user interfaces for future multimedia wireless terminal devices An example of a new innovative user interface:GKOS – The global keyboard optimized for small wireless terminals1 The new generation of terminal devicesHow the user experiences new telecommunications technology, depends on the services offered and also on the usability, design and quality of the terminals. Wearable computing is a popular study item at universities worldwide, giving new ideas of man-machine interfaces applicable also for mobile terminals. Text messaging is the killer data application of today, and multimedia messaging, including text, is expected to be the next. There must be a wide and big enough screen for displaying good quality images and videos. Combining a keyboard and a large enough display on a compact small terminal is a challenge. From the usability point of view, however, this is a must. Mobile text entry methods should also be made faster. Most solutions offered for text input so far are not open standards but proprietary methods including IPRs. The proposed physical keyboards tend to add features and/or buttons to the conventional dialling keypad instead of decreasing the number of keys that could rather be the goal in order to minimize the space required. There is also a clear need for harmonization and for recommended use of common open interface standards in this area. Namely, if a user gets used to one type of keyboard and becomes a committed and skilled user of it, she or he will get frustrated if the next phone, new version or another brand, has a different or slightly different user interface solution and the learning curve must be restarted. The GKOS keyboard, a proposed open standard described below, is one solution to the problems just mentioned. Directory: dms pub -> itu-r -> oth oth -> Section 1a vocabulary, characteristics and general technologies for land mobile service oth -> U. S. Mobile eas for atsc mobile dtv itu-r -> Report itu-r sa. 2312-0 (09/2014) itu-r -> Report itu-r itu-r -> 3rd itu inter-regional workshop on wrc-15 preparation geneva, 1 – 3 September 2015 oth -> Radiocommunication Study Groups oth -> Itu-r workshop on Emergency Broadcasting Speakers Biographies Lynn Claudy oth -> Coordination and notification procedures introduction Download 496.69 Kb. Share with your friends:
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