建立了分析捎带性能的简单模型，推导了几种特定通信类型的捎带度。分析结果表明：在目端积累2到3个ACK，对于大多数通信条件都能获得令人满意的捎带性能。 A simple model for analyzing piggybacking performance was established and the piggybacking of several specific types of communications was derived. The analysis results show that 2 to 3 ACKs accumulate at the head end, and satisfactory piggyback performance can be obtained for most communication conditions.