Method and Apparatus to Report and Handle Buffer Status for User Equipment Working in Inter-Site Carrier Aggregation Mode
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United States of America Patent
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Issued Date -
Jan 8, 2015
app pub date -
Feb 7, 2012
filing date -
Feb 7, 2012
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Abstract
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.
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