First Mile Access Networks and Enabling Technologies

Initialization

Figure 5-13 shows the initialization procedure of an SS.

Figure 5-13. Subscriber Station Initialization Process

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The initialization can be divided into several phases, as follows:

• Scanning and synchronization for downlink channel— During initialization or after signal loss, the SS tries to acquire a downlink channel. For a signal-loss condition, the SS tries to reacquire the original channel from the information stored in the nonvolatile memory. If it fails to acquire the original channel, it scans for possible channels of the available downlink frequency band until it finds one. When the physical layer has ...