Other numbers such as esn ( electronic serial numbers ) and meid ( mobile equipment identifiers ) can link an individual to a phone 其它諸如柔性號碼(電子序號)和meid (移動設(shè)備標(biāo)識)一個(gè)人到了電話聯(lián)系
Standard classification for hierarchy of equipment identifiers and boundaries for reliability , availability , and maintainability performance data exchange 可靠性有效性和可維護(hù)性數(shù)據(jù)交換用設(shè)備識別符和邊界的分級結(jié)構(gòu)的標(biāo)準(zhǔn)分類
1 ) realization of software packet embedded in m - es and md - is respectively to accomplish main function of mdlp , including assignment of tei ( temporary equipment identifier ) , establishment of multiple frame operation , framing , flow control and error - free transmission of packets , is detailed . 2 ) a test model is established to evaluate the robustness and stability of mdlp and verify the validity of software packets . 3 ) according to the design of radio modem construction used in m - es , the modules of interface between data terminal equipment and radio modem are achieved to enable transmission of short message and continuous pseudo - random bit stream via rs232 uart 本文首先概述了蜂窩數(shù)字分組數(shù)據(jù)網(wǎng)的結(jié)構(gòu)和空中協(xié)議,詳細(xì)分析了移動數(shù)據(jù)鏈路協(xié)議,并在此基礎(chǔ)上,重點(diǎn)敘述了以下方面的工作: 1 )設(shè)計(jì)并完成了分別應(yīng)用于m - es和md - is端無線控制器的兩套程序?qū)崿F(xiàn)數(shù)據(jù)鏈路層的主要功能,包括分配臨時(shí)設(shè)備號、建立鏈路、組幀和面向連接的服務(wù)保證分組正確無誤地傳輸,并進(jìn)行適當(dāng)?shù)牧骺兀?2 )建立測試模型測試移動數(shù)據(jù)鏈路協(xié)議的可靠性和穩(wěn)定性,證明了程序包的效用; 3 )根據(jù)cdpd系統(tǒng)無線調(diào)制解調(diào)器的軟硬件總體設(shè)計(jì)方案,完成了接口模塊,實(shí)現(xiàn)了rs232異步串口通信,使用戶可以根據(jù)需要發(fā)送短消息或連續(xù)的偽隨機(jī)比特流; 4 )在tms320c54x的軟件、硬件仿真平臺上,建立了cdpd試驗(yàn)?zāi)P?,?shí)現(xiàn)了cdpd系統(tǒng)的mdlp基本功能。