| 摘要 |
A pilot method and device, the method comprising: a base station determines whether data to be transmitted requires pilot density enhancement, and if so, determines the mapping location of the demodulation reference signal (DMRS) on each resources block, and establishes a mapping between the first subframe of the data to be transmitted and a designated antenna port according to the number of multiplexing layer; the base station determines, according to the number of continuous downlink subframes of the data to be transmitted, whether the subframes use the same antenna port mapping, adds the determination results to a scheduling instruction, and transmits the scheduling instruction to a terminal, the scheduling instruction including whether the antenna port mapping of each subframe has displacement and the number of displacement; the base station configures the antenna port mapping for each subframe according to the determination result. Thus, the channel estimation precision on the terminal side is ensured, thereby ensuring the data demodulation performance of the terminal. Particularly in the case of advanced data multiplexing, the solution does not cause substantial increase of pilot overhead and effectively enhances pilot density. |
