1. Combining TDD phy code and L2/L3 source code. 2. Porting source code between FDD/TDD system. 3. improving TDD small cell throughput. (developing tdd ul dl configuration 0) 4. Improving TDD small cell stability to reduce uplink/downlink bler.(developing Link Adaption) 5. Maintain LTE protocol function. 6. Improving FDD small cell stability in complex environment. 7. Improving NBiot small cell stability.