US Patent:
20120163205, Jun 28, 2012
Inventors:
Danlu Zhang - San Diego CA, US
Sharad Deepak Sambhwani - San Diego CA, US
Rohit Kapoor - San Diego CA, US
Jilei Hou - San Diego CA, US
Weiyan Ge - San Diego CA, US
Assignee:
QUALCOMM INCORPORATED - San Diego CA
International Classification:
H04W 28/02
H04W 72/10
H04W 72/04
Abstract:
A base station (e.g., a Node B in a Multi-Point HSDPA network) calculates an amount of data to request from a network node (e.g., a radio network controller or RNC). As a part of the algorithm utilized, a length of a queue at the Node B for buffering the flow may be dynamically adjusted in an effort to optimize the trade-off between buffer underrun and skew. Further, a network node (e.g., the RNC) responds to Node B flow control requests. Here, the RNC may determine the amount of data to send to the Node B in response to the flow control message from the Node B, and may send the data to the Node B. In various aspects of the present disclosure involving a Multi-Point HSDPA system, the flow control algorithm at the RNC coordinates packet flow to the primary serving cell and the secondary serving cell for the UE.