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The authors study the problem of multiple packet bundling in multi-carrier cellular networks for VoIP and data traffic. In a time-slotted system such as the cdma2000 1xEV-DO downlink, part of a time-slot may not be fully utilized, if the packet sizes are small, as in the case of real-time VoIP traffic. Packet bundling can alleviate such a problem by sharing a time slot among multiple users, as proposed in the EV-DO Revision A system. A recent revision, EV-DO Revision B, enables further increased system capacity through multiple carriers. However, the efficacy of packet bundling, especially across multiple carriers, is not well understood.
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