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專利名稱(英) | BEAM ALIGNMENT METHOD FOR ANTENNA ARRAY, MULTI-BEAM TRANSMISSION SYSTEM, AND MULTI-BEAM TRANSMISSION APPARATUS |
專利家族 |
中華民國:I715247 大陸:7143639 美國:10,834,613 |
專利權人 | 國立清華大學 100.00% |
發明人 | 王晉良,蔡育仁,陳文修 |
技術領域 | 通信傳輸 |
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A beam alignment method for an antenna array is provided. In the method, a base station uses multi-modal beam patterns for transmitting several synchronization signals. User equipment scans the synchronization signals, determines a synchronization signal with the strongest received power and a receive beam direction corresponding thereto, and transmits an initial access message including index information indicating the strongest synchronization signal. The base station receives the initial access message on the random access channel by using the single-modal beam patterns, determines a single-modal beam pattern with the strongest access power for the initial access message, and compares the determined single-modal beam pattern with the strongest access power with a main lobe of the multi-modal beam pattern corresponding to the index information indicating the synchronization signal with the strongest received power in the initial access message, to determine an optimal beam direction for the transmission to the user equipment. |
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A beam alignment method for an antenna array is provided. In the method, a base station uses multi-modal beam patterns for transmitting several synchronization signals. User equipment scans the synchronization signals, determines a synchronization signal with the strongest received power and a receive beam direction corresponding thereto, and transmits an initial access message including index information indicating the strongest synchronization signal. The base station receives the initial access message on the random access channel by using the single-modal beam patterns, determines a single-modal beam pattern with the strongest access power for the initial access message, and compares the determined single-modal beam pattern with the strongest access power with a main lobe of the multi-modal beam pattern corresponding to the index information indicating the synchronization signal with the strongest received power in the initial access message, to determine an optimal beam direction for the transmission to the user equipment. |
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承辦人姓名 | 李曉琪 |
承辦人電話 | 03-5715131 #31061 |
承辦人Email | hsiaochi@mx.nthu.edu.tw |