Method and apparatus for managing control channel in a mobile communication system using multiple antennas

摘要

A method for transmitting and receiving a control channel message in a mobile communication system using multiple antennas is provided. A base station determines whether a common pilot is used or a dedicated pilot is used. It also determines whether a corresponding Multiple Input Multiple Output (MIMO) mode is a Multi-CodeWord (MCW) MIMO mode or a Single CodeWord (SCW) MIMO mode, and determines whether knockdown precoding is used or ready-made precoding is used. The base station generates a control channel message field including a pilot pattern and a precoding type according to the determination results, and transmits the generated control channel message to the terminal. The terminal receives a control channel message transmitted from a base station. The terminal determines whether a common pilot is used or a dedicated pilot is used, whether a corresponding MIMO mode is an MCW MIMO mode or an SCW MIMO mode, and whether knockdown precoding is used or ready-made precoding is used. The terminal analyzes the control channel message field according to the determination results, and determines a data reception method according to the analysis result.

主权项

1. A method for transmitting a control channel message to a terminal, by a base station, in a Multiple Input Multiple Output (MIMO) mobile communication system, the method comprising the steps of:
determining whether a pilot that is used for data demodulation in a Mobile Station (MS) is a common pilot or a dedicated pilot; when it is determined that the common pilot is used for the data demodulation in the MS, generating control information including at least one of information about a precoding scheme, a MIMO transmission rank being a number of transmission layers in which encoded packet streams are transmitted, and an index mapping a precoding matrix corresponding to the precoding scheme and the number of transmission layers; when it is determined that the dedicated pilot is used for the data demodulation in the MS, generating the control information including information about a pilot format of the dedicated pilot and the MIMO transmission rank; generating the control channel message including the control information; and transmitting the control channel message to the terminal.