Method and system for blindly detecting a discontinuously transmitted shared channel, in particular blind high speed shared control channels detection

A system for blindly detecting an eventual channel intended for a designated user equipment among n channels received by the designated user equipment during a given duration, each channel received during the duration carrying encoded data masked with an identifier associated to a user equipment, the system comprising:

• a demasker for demasking the received masked encoded data of each channel with the identifier of said designated user equipment;
• a decoder for decoding the demasked encoded data of each channel to obtain a set of digital decoded data for each channel;
• a first calculator for calculating, from each set of digital decoded data, a global confidence information representative of a confidence in digital data received on the corresponding channel;
• and
• a detector for detecting said eventual channel from said n global confidence information;
• wherein the detector detects a maximum global confidence among said n global confidence information, and validates said maximum global confidence information based upon a threshold, the detector including
• a second calculator for calculating the value (Max1-Max2)/Max1, wherein Max1 is a greatest global confidence information and Max2 is a second greatest global confidence information,
• a comparator for comparing the value (Max1-Max2)/Max1 with the threshold, and
• a selector for choosing the eventual channel having the global confidence information equal to Max1, if the value (Max1-Max2)/Max1 is greater than or equal to the threshold.

A wireless communication device for use in a wireless communication system, the device comprising:

• a unit for blindly detecting an eventual channel intended for the device among n channels received by the device during a given duration, each channel received during the duration carrying encoded data masked with a device identifier, the unit including
• a demasker for demasking the received masked encoded data of each channel with the identifier of the device,
• a decoder for decoding the demasked encoded data of each channel to obtain a set of digital decoded data for each channel,
• a first calculator for calculating, from each set of digital decoded data, a global confidence information representative of a confidence in digital data received on the corresponding channel, and
• a detector for detecting said eventual channel from said n global confidence information;
• wherein the detector detects a maximum global confidence among said n global confidence information, and validates said maximum global confidence information based upon a threshold, the detector including
• a second calculator for calculating the value (Max1-Max2)/Max1, wherein Max1 is a greatest global confidence information and Max2 is a second greatest global confidence information,
• a comparator for comparing the value (Max1-Max2)/Max1 with the threshold, and
• a selector for choosing the eventual channel having the global confidence information equal to Max1, if the value (Max1-Max2)/Max1 is greater than or equal to the threshold.