wireless message

Comparing transversely on some familiar modes of communication in wireless communication fields, such as SMS ( Short Message Service), WAP ( Wireless Application Protocol) and USSD, it is concluded that USSD takes a great advantage on both system maintenance cost and terminal support.

通过对无线通信领域中几种常见的通信方式短信息方式、WAP方式（Wireless Application Protocol）、USSD方式进行横向比较而得出：USSD方式在系统消耗、终端支持、维护成本上具有极大的优势。

a message sent by wireless

用无线电报发出的信息

These functions of automobile multimedia system include automobile navigation system, DVD player, FM radio, TV, GPRS wireless Internet connection, sending short message.

系统主要包括的功能有：车载导航系统、DVD、FM调频收音机、电视、GPRS无线上网、倒车雷达及发短信报警。

Moreover, domestic enabling techniques used to realize micro payment service mature gradually at present, such as short message, WAP ( Wireless Application Protocol), and so on. More and more market advantages of micro payment are revealed now.

而且，目前国内可用来实现移动支付的支撑技术已经逐渐成熟，如短消息技术，无线应用协议（WAP）等，小额支付市场正在显露出越来越强烈的市场优势。

Directional broadcasting limits the area covered by a broadcast message, which also means limiting the number of nodes to rebroadcast and contend for the wireless channel.

定向天线用来限制广播的范围，即限制重传节点的数目和无线信道的竞争。