METHOD AND APPARATUS TO REPORT AND HANDLE BUFFER STATUS FOR USER EQUIPMENT WORKING IN INTER-SITE CARRIER AGGREGATION MODE

摘要

In inter-site carrier aggregation (CA) mode, a user equipment (UE) may benefit from methods and systems for handling UE buffer status reports. For dual-carrier uplink control information transmission mode, for example, the user equipment can send the buffer status report only to the Pico eNode B (eNB). Then, the Pico can send the updated buffer status report to the Macro via an X2 interface so as to shift some traffic load to a primary cell (PCell) and guarantee a load balance between two eNBs. Before sending, the Pico can exclude a possibly scheduled amount on secondary cell (SCell) according to the uplink traffic load.