کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
451913 694432 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
QoS-aware downlink packet scheduling for LTE networks
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
QoS-aware downlink packet scheduling for LTE networks
چکیده انگلیسی

Scheduling for flows has been studied before. However, applying the previous schemes directly for LTE networks may not achieve good performance. To have good performance, both frequency domain allocations and time domain allocations for LTE resource blocks are suggested. Our method is suitable for real-time services and it consists of three phases. In frequency domain we design our method to utilize the RBs effectively. In time domain we first manage queues for different applications and propose a mechanism for predicting the packet delays. We introduce the concept of virtual queue to predict the behavior of future incoming packets based on the packets in the current queue. Then based on the calculated results, we introduce a cut-in process to rearrange the transmission order and discard those packets which cannot meet their delay requirements. We compare our scheduling mechanism with maximum throughput, proportional fair, modified largest delay first and exponential proportional fair. Simulation results show our scheduling method can achieve better performance than other schemes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Networks - Volume 57, Issue 7, 8 May 2013, Pages 1689–1698
نویسندگان
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