Nagoya Institute of Technology
This paper studies QoE (Quality of Experience) enhancement of audio - video IP transmission over the uplink channel, i.e., from Subscriber Stations (SSs) to the Base Station (BS), in the IEEE 802.16 BE service. The authors assume two types of capacity allocation schemes for uplink and downlink burst durations: static and adaptive. Furthermore, they introduce a piggyback request mechanism for uplink bandwidth requests from SSs to the BS in addition to a random access - based request mechanism. They assess QoE of audio - video streams for four schemes obtained from the combination of the bandwidth request mechanisms and the capacity allocation schemes. They also employ two types of audio - video contents.