point to point service meaning in Chinese

固定业务

And because of the limitation of computing and storage on mobile devices , currently used pki architecture can not be applied to mobile network directly . wpki is designed to solve those problems with lower resource request . this paper focused on the information security on gprs system and the solutions to provide security for point to point services on application level
由于移动环境下普遍使用的终端设备都或多或少的存在着计算能力差,存储容量小等缺点,传统意义上的安全保障体系如pki无法直接在该环境下运用,而只能使用针对无线环境进行优化后的wpki机制。