Dianxin kexue (Feb 2022)
A solution for 5G indoor and outdoor co-frequency network interference
Abstract
5G indoor and outdoor deployment with the same frequency will lead to the decline of network coverage performance and user service experience.The causes of indoor and outdoor interference with the same frequency was systematically analyzed.The principle of three indoor and outdoor co-channel interference solutions, namely PRB random interference solution, indoor and outdoor beam cooperative interference solution and indoor multi beam interference solution were studied.The results show that the PRB random interference solution has the best interference suppression effect when the traffic load is about 30%.When the indoor and outdoor beam cooperation function is turned on when the adjacent area of the outdoor macro station is no-load or high load (70%), the improvement of the downlink rate is more obvious.When the indoor multi-beam function is turned on, the downlink rate is significantly higher than that of single beam.Finally, the deployment suggestions of co-channel interference control scheme were given.
