METHOD AND APPARATUS FOR ACHIEVING COMPATIBILITY BETWEEN WCDMA SYSTEM AND GSM SYSTEM

摘要

FIELD: radio engineering, communication.;SUBSTANCE: in the downlink data path of a base station, IQ data of the GSM system are mapped to the CPRI according to a predetermined rate before IQ data interleaving and framing the CPRI base frame (BF), and then the mapped IQ data of the GSM system and the IQ data of the WCDMA system are multiplexed. In the uplink data path of the base station, IQ data in the CPRI are de-multiplexed after de-framing the CPRI base frame (BF) and IQ data de-interleaving, and then the de-multiplexed IQ data of the GSM system are de-mapped according to the predetermined rate. The present invention further provides an apparatus for realising compatibility between a WCDMA system and a GSM system. The method and apparatus in the present invention enable to unify two different radio transmission modes of the WCDMA system and the GSM system in the bottom layer, and compatibility on the physical layer between the WCDMA system and the GSM system is genuinely achieved.;EFFECT: providing compatibility between a WCDM system and a GSM system.;8 cl, 11 dwg