Intelligent deployment cascade control device based on an fdd-ofdma indoor small cell in multi-user and interference environments

A frequency division duplexing-orthogonal frequency division multiplexing access (FDD-OFDMA) based adaptive neural fuzzy inference system (ANFIS) intelligent deployment cascade control (IDCC) device for indoor small cell operated in the multi-user (MU) and interference environments to self-optimize the service reliability, throughput, minimum transmit power and interference for multimedia call services, comprising:

• using the frequency division duplexing-orthogonal frequency division multiplexing access method to allocate the resources of the indoor small cell base station to multiple user equipments (UEs);
• a resource allocator assigns the average resource blocks (RBs) of small cell for each indoor user according to the total number of indoor users and the setting system bandwidth;
• a minimum throughput/cell edge channel quality index (CQI) converter sets the cell edge (minimum) channel quality index for each indoor user in accordance with the minimum throughput requirement;
• an adaptive neural fuzzy inference system based initial transmit power setting controller (ITPSC) in the first cascade unit adapts the initial power setting for the uth user to the coverage radius of indoor office, the number of the resource blocks and the cell edge channel quality index;
• an adaptive neural fuzzy inference system based channel quality index decision controller (CQIDC) in the second cascade unit adapts the best channel quality index to the initial power setting, number of the resource blocks and average path loss (PL) measured by the user equipment;
• and
• an adaptive neural fuzzy inference system based self-optimizing power controller (SOPC) in the third cascade unit consists of three parts, namely the transmit power adjustment estimator (TPAE), transmission power assignment and self-optimization power controller protection mechanism;
• wherein, it can autonomously cascade control the assignments of initial power, the best channel quality index and the minimum transmit power to the transceiver according to the user input parameters including the service reliability, coverage radius and the throughput at the cell edge;
• the measured average path loss and average signal-to-interference-plus-noise ratio (SINR), so that the present intelligent deployment cascade control device can self-optimize the service reliability of the indoor small cell in the multi-user and interference environments, while maintaining the blocking error rate (BLER) less than 10-1 and minimizing the transmit power and interference power to achieve the design aims of energy saving and interference reducing.