ZTE Corporation：RIS Wings
ZTE is the industry’s first to launch and verify the RIS wings solution explore whether RIS can improve the overall cell capacity. In this solution, two RIS boards are installed on both sides of the Sub-6GHz commercial AAU and unfolded at a certain angle, shaped like wings. The performance of RIS wings is verified through CQT and DT test. In the CQT test, three test points near, middle, and far in the cell were selected to test the UE’s signal coverage and uplink and downlink throughput when the RIS wings are closed and open respectively.The test results show that when the RIS wings are open, there are gains at all three test points.The average downlink rate is increased by up to 15%, and the average uplink rate is increased by up to 100%. To fully evaluate the improvement of cell average throughput DT tests were performed with RIS wings closed and open respectively. The test results show that, when the RIS wings are open the average downlink rate is increased by 5.8%, and the average uplink rate is increased by 8.3%. Based on the above test results ZTE believes that RIS wings can improve the overall cell capacity in outdoor Line-of-sight scenarios, such as squares,stadiums in urban areas, and suburban or rural areas.