11.基站子系统（BSS）的组成有哪些？
["\u7b54\uff1aBSS\u7531\u57fa\u7ad9\u63a7\u5236\u5668\uff08BSC\uff09\u3001\u7f16\u8bd1\u7801\u548c\u901f\u7387\u9002\u914d\u5355\u5143\uff08TRAU\uff09\u3001\u5c0f\u533a\u5e7f\u64ad\u77ed\u6d88\u606f\u4e2d\u5fc3\uff08CBC\uff09\u3001\u57fa\u7ad9\u6536\u53d1\u4fe1\u673a\uff08BTS\uff09\u3001\u5f31\u573a\u8bbe\u5907\u7b49\u529f\u80fd\u5b9e\u4f53\u6784\u6210\u3002"]