Method of reference signal allocation in wireless communication systems

摘要

A method is provided for determining reference signal positions in a frequency-time domain in an Orthogonal Frequency Division Multiple Access (OFDMA) system. A plurality of sub-carriers are selected in one resource block according to a predetermined mother pattern for reference signal allocation. When a single resource block is assigned for transmission to a user, the reference signal positions are determined corresponding to the plurality of selected sub-carriers in the single resource block. When multiple resource blocks are assigned for transmission to a user, the reference signal positions are determined in the multiple resource blocks by reducing a number of the plurality of selected sub-carriers in the mother pattern for at least one of the multiple resource blocks.

主权项

1. A method of determining reference signal positions in a frequency-time domain in an Orthogonal Frequency Division Multiple Access (OFDMA) system, the method comprising the steps of:
selecting, by a terminal of the OFDMA system, a plurality of sub-carriers in one resource block according to a predetermined mother pattern for reference signal allocation; when a single resource block is assigned for transmission to a user, determining the reference signal positions corresponding to the plurality of selected sub-carriers in the single resource block, by the terminal of the OFDMA system; and when multiple resource blocks are assigned for transmission to a user, determining, by the terminal of the OFDMA system, the reference signal positions in the multiple resource blocks corresponding to the mother pattern, wherein the mother pattern of at least one of the multiple resource blocks has a reduced number of the plurality of selected sub-carriers disposed near an edge of the at least one of the multiple resource blocks.