Abstract
This paper focuses on downlink packet scheduling for streaming video in Long Term Evolution (LTE). As a hard handover is adopted in LTE and has the period of breaking connection, it may cause a low user-perceived video quality. Therefore, we propose a handover prediction mechanism and a pre-scheduling mechanism to dynamically adjust the data rates of transmissions for providing a high quality of service (QoS) for streaming video before new connection establishment. Advantages of our method in comparison to the exponential/proportional fair (EXP/PF) scheme are shown through simulation experiments.
Highlights
For improving a low transmission rate of the 3G technologies, LTE (Long Term Evolution) was designed as a next-generation wireless system by the 3rd Generation Partnership Project (3GPP) to enhance the transmission efficiency in mobile networks [1,2]
enhancement layers (ELs) can be added to the base layer to further enhance the quality of coded video, it may in this paper, we propose a pre-scheduling mechanism to determine the transmission rates not be essential
A pre‐scheduling mechanism is proposed for real‐time video delivery over LTE
Summary
For improving a low transmission rate of the 3G technologies, LTE (Long Term Evolution) was designed as a next-generation wireless system by the 3rd Generation Partnership Project (3GPP) to enhance the transmission efficiency in mobile networks [1,2]. The PF mechanism utilizes link adaptation (LA) technology It compares the current channel rate with the average throughput for each user and selects the one with the largest value. These methods only consider non-real-time data transmissions. In one study [8], two semi-persistent scheduling (SPS) algorithms are proposed to achieve a high reception ratio in real-time transmission It utilizes wide-band time-average signal-to-interference-plus-noise ratios (SINR) information for physical resource blocks (PRBs) allocation to improve the performance of. ELs can be added to the base layer to further enhance the quality of coded video, it may in this paper, we propose a pre-scheduling mechanism to determine the transmission rates not be essential.
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