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RTCP hierarchical aggregation

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Hierarchical aggregation (or also known as RTCP feedback hierarchy) is an optimization of the RTCP feedback model to shift borders of maximum number of users limit [1], [2]. The frequncy of reporting about [QoS] depends on a number of session members. For large sessions it could be such low as the reported status could be very unaccurate.

References

  1. Realtime control protocol and its improvements for Internet Protocol Television
  2. Optimization of Large-Scale RTCP Feedback Reporting in Fixed and Mobile Networks