| 摘要 |
A public service system comprises: automatic request recognition means, capable of automatically recognizing a user request, automatic user identification means, capable of automatically identifying the requesting user, automatic authorization means, capable of automatically checking a user's authorisation; a wireless communication network ( 110 ) having a plurality of communication nodes ( 111, 112, 113, 114 ) capable of direct or indirect communication with each other; a central controller ( 120; 220 ) associated with at least one of said communication nodes; and request receiving means associated with at least one of said communication nodes.
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