Based on the analysis of research on existing data service technology,in view of the existing problems of data service r......

Massive ocean data acquired by various observing platforms and sensors poses new challenges to data mana-gement and util......

结合铁路车辆监控管理系统和铁路无线售票系统的应用需求,介绍了GSM的短消息业务、GPRS数据业务和CDMA数据业务的原理和特点,分析......