Example 12.1 The stations on a wireless ALOHA network are a maximum of 600 km apart.If we assume that signals propagate at 3 X 108 m/s,we find Tp=(600 X 105)/(3 X 108)=2 ms.Now we can find the value of Te for different values of K. 一个纯ALOHA协议的站点之间最大距离为600公里，信号的传 播速度为30万公里/秒，那么Tp=(600×105)/(3×108)=2ms 。对于不同的K值，得到不同的T值。 For K 1,the range is 0,1.The station needs to generate a random number with a value of 0 or 1.This means that TB is either 0 ms (0 X 2)or 2 ms (1 X 2), based on the outcome of the random variable. 若K=1,则取值范围{0,1}。即站内的随机数位0或1。这意味着 TB是0ms(0X2)或是2ms(1X2)。 12.712.7 The stations on a wireless ALOHA network are a maximum of 600 km apart. If we assume that signals propagate at 3 × 108 m/s, we find Tp = (600 × 105 ) / (3 × 108 ) = 2 ms. Now we can find the value of TB for different values of K . 一个纯ALOHA协议的站点之间最大距离为600公里，信号的传 播速度为30万公里/秒，那么Tp = (600 × 105 ) / (3 × 108 ) = 2 ms 。对于不同的K值，得到不同的TB值。 a. For K = 1, the range is {0, 1}. The station needs to| generate a random number with a value of 0 or 1. This means that TB is either 0 ms (0 × 2) or 2 ms (1 × 2), based on the outcome of the random variable. 若K=1，则取值范围{0, 1}。即站内的随机数位0或1。这意味着 TB 是 0 ms (0 × 2)或是2 ms (1 × 2)。 Example 12.1