کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4954527 1443324 2017 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mid-Term frequency domain scheduler for resource allocation in wireless mobile communications systems
ترجمه فارسی عنوان
زمانبندی دامنه فرکانس میان مدت برای تخصیص منابع در سیستم های ارتباطی بی سیم تلفن همراه
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
چکیده انگلیسی

This article approaches the dynamic resource allocation problem for the downlink of a wireless mobile communication system (WMCS). The article defines the architecture and functions of the global resource scheduler, as well as the quality index for scheduling, the signal to interference-plus-noise ratio (SINR). The proposed approach divides the scheduling task into two components: a distributed one, with local, short-term scope; and a centralized one, with global, medium-term scope. The optimization model considers a set of slack variables for guaranteeing feasibility. This allows the service provider to fully satisfy the users' service demands. The model type is mixed, non-linear, which demands large computational power for an exact solution. So an approximate strategy is used, in order to decouple the search space. The time limit imposed to reach a solution forces to define a reduced neighborhood structure. Thus, the obtained results are the best solution obtained in the allotted time interval, evaluating a suitable set of neighbors, and using an objective, effective criterion for searching. The solution offers high levels of full service satisfaction (greater than 97%), low levels of service denial (less than 2%), and efficient power usage (30% in average).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Communications - Volume 97, 1 January 2017, Pages 96-110
نویسندگان
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