tailieunhanh - Mobile and Wireless Communications Network layer and circuit level design 2012 Part 4

Tham khảo tài liệu 'mobile and wireless communications network layer and circuit level design 2012 part 4', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Wireless in Future Automotive Applications 81 Native Applications MIDP Manufacturer-specific Applications Applications 1 Manufacturer-s. Classes 1 MIDP 1 CLDC with KVM Operation System Hardware Fig. 7. Architecture of the CLDC The following table shows an overview of at present available configurations of Java ME. Regarding to the technological development of the mobile devices with the CLDC compared to its previous version the minimum necessary memory was increased from 160 to 192 KB. The main reason for it was the introduction of the classes Float and Double. Further smaller errors were corrected and some additional classes were added. It might be only a question of time until all mobile devices support version of the configuration but at the moment one has to consider which version the current hardware supports. JSR 30 CLDC Connected Limited Device Configuration JSR 139 CLDC Connected Limited Device Configuration JsR 36 CDC Connected Device Configuration JsR 218 CDC Connected Device Configuration Table 2. Java ME Configurations The CDC configuration contains a substantially larger part of the Standard Edition APIs. And the appropriate Foundation Profile contains the entire Java Abstract Window Toolkit AWT with all functions necessary for executing Java Applets. The Personal Basis Profile is a subset of the Personal Profile and makes available nuclear functionality with a minimum graphic support. Here is not dealt with CDC and their profiles since for the for the mobile application development the CLDC is crucial. JSR 37 MIDP Mobile Information Device Profile JsR 118 MIDP Mobile Information Device Profile JsR 75 PDA PDA Profile JsR 46 FP Foundation Profile JsR 129 PBP Personal Basis Profile JsR 62 PP Personal Profile Table 3. Java ME Profiles The MIDP bases on the CLDC and contains many important functions like for example network connections and their protocols generation of sounds and user interfaces such as .