Heterogeneous Spectrum Aggregation: Coexistence From a Queue Stability Perspective

2018 ◽  
Vol 17 (4) ◽  
pp. 2471-2485 ◽  
Author(s):  
Yitu Wang ◽  
Wei Wang ◽  
Vincent K. N. Lau ◽  
Lin Chen ◽  
Zhaoyang Zhang
Keyword(s):  
Spectrum Aggregation ◽  
Queue Stability

Routing Optimization with Efficient Second Order Distributed Approach Using Congestion Control Rules

2017 ◽  
Vol 7 (7) ◽  
pp. 363
Author(s):  
Jaya Pratha Sebastiyar ◽  
Martin Sahayaraj Joseph
Keyword(s):  
Congestion Control ◽  
Second Order ◽  
Back Pressure ◽  
Order Method ◽  
Delay Performance ◽  
Routing Optimization ◽  
Distributed Approach ◽  
Control Rules ◽  
Primal Dual ◽  
Queue Stability

Distributed joint congestion control and routing optimization has received a significant amount of attention recently. To date, however, most of the existing schemes follow a key idea called the back-pressure algorithm. Despite having many salient features, the first-order sub gradient nature of the back-pressure based schemes results in slow convergence and poor delay performance. To overcome these limitations, the present study was made as first attempt at developing a second-order joint congestion control and routing optimization framework that offers utility-optimality, queue-stability, fast convergence, and low delay.  Contributions in this project are three-fold. The present study propose a new second-order joint congestion control and routing framework based on a primal-dual interior-point approach and established utility-optimality and queue-stability of the proposed second-order method. The results of present study showed that how to implement the proposed second-order method in a distributed fashion.

scholarly journals Enhanced 5G Cognitive Radio Networks Based on Spectrum Sharing and Spectrum Aggregation

2018 ◽  
Vol 66 (12) ◽  
pp. 6304-6316 ◽  
Author(s):  
Wensheng Zhang ◽  
Cheng-Xiang Wang ◽  
Xiaohu Ge ◽  
Yunfei Chen
Keyword(s):  
Cognitive Radio ◽  
Cognitive Radio Networks ◽  
Spectrum Sharing ◽  
Radio Networks ◽  
Spectrum Aggregation

scholarly journals Achieving High Availability in Heterogeneous Cellular Networks via Spectrum Aggregation

2017 ◽  
Vol 66 (11) ◽  
pp. 10156-10169 ◽  
Author(s):  
Jie Jia ◽  
Yansha Deng ◽  
Jian Chen ◽  
Abdol Hamid Aghvami ◽  
Arumugam Nallanathan
Keyword(s):  
Cellular Networks ◽  
High Availability ◽  
Heterogeneous Cellular Networks ◽  
Spectrum Aggregation
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