| 摘要: |
| 分析了车载GPRS数据传输的难点，在南京地区建立GPRS网络测试系统，测试结果表明：为
确保高速率移动数据传输的可靠性和高效性，在GPRS网络中使用TCP协议时，心跳包间隔
最大9 min；使用UDP协议时，心跳包间隔最大4 min；数据分包长度小于500 byt
e。该试验为实际工程应用中的参数设置提供了依据。 |
| 关键词: 智能交通 GPRS 心跳包 数据分包 传输协议 性能分析 |
| DOI： |
|
| 基金项目:金陵科技学院博士基金资助项目（40610035） |
|
| Performance analysis on GPRS data packetization size and heartbeat-packets interval |
| TIAN Jin |
| () |
| Abstract: |
| The difficulties of data transmission by GPRS are analysed, and a test system
for GPRS network is established in Nanjing, China. The experiment results show i
n order to reliably and e
fficiently transmit mobile high data rate, the interval time between heartbeat-p
ackets is at most 9 minutes when using TCP; at most 4 minutes when using UDP; an
d data packetization is at most 500 bytes size. The experiment provides a valuab
le foundation to set the communication parameter in practical engineering applic
ations. |
| Key words: ITS GPRS heartbeat-packets data packetization transmission protocol performa
nce analysis |
