| 摘要 |
In a communications spectrum shared by public safety users and commercial users, in the event of an emergency condition, commercial users are preempted and corresponding bandwidth is reallocated to authorized public safety users. When the emergency condition subsides, the reallocated bandwidth is made available for commercial use. Reallocation and preemption can be initiated by an authorized public safety entity and/or can be initiated when public safety usage exceeds a predetermined usage threshold.
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