Proportional Fair Resource Partition for LTE-Advanced Networks with Type I Relay Nodes

2011 ◽  
Author(s):  
Zhangchao Ma ◽  
Wei Xiang ◽  
Hang Long ◽  
Wenbo Wang
Keyword(s):  
Type I ◽  
Relay Nodes ◽  
Proportional Fair ◽  
Lte Advanced ◽  
Resource Partition

Study on the Resource Scheduling Algorithm for LTE-Advanced Downlink Systems

2014 ◽  
Vol 577 ◽  
pp. 1017-1021
Author(s):  
Hong Zhuo Wang ◽  
Zheng Hai Sun ◽  
Jun Wang ◽  
Fang Liu
Keyword(s):  
Power Allocation ◽  
Scheduling Algorithm ◽  
Resource Scheduling ◽  
Carrier Aggregation ◽  
High Complexity ◽  
Proportional Fair ◽  
Lte Advanced ◽  
Simulation Results ◽  
Equal Power Allocation ◽  
Equal Power

In the paper, the resource scheduling algorithm in the downlink of LTE-Advanced (LTE-A) assuming equal power allocation among subcarriers which adopted the technology of carrier aggregation (CA) is investigated. When the independent scheduling (INS) scheme is applied, the LTE users will acquire few resources because they cannot support CA technology. And the fairness of the system is disappointing. Focusing on the problem, a novel proportional fair (PF) scheduling algorithm based on INS is proposed. In the proposed method, the system fairness is well improved without bringing high complexity to the system. And also, we design a weigh factor which is related to the number of the carriers and the percentage of LTE users in the method. The simulation results show that the proposed algorithm can effectively increase the throughput of LTE users and improve the system fairness.

scholarly journals On the Coverage Extension and Capacity Enhancement of Inband Relay Deployments in LTE-Advanced Networks

2010 ◽  
Vol 2010 ◽  
pp. 1-12 ◽  
Author(s):  
Abdallah Bou Saleh ◽  
Simone Redana ◽  
Jyri Hämäläinen ◽  
Bernhard Raaf
Keyword(s):  
Relay Node ◽  
System Capacity ◽  
System Level ◽  
System Throughput ◽  
Relay Nodes ◽  
Decode And Forward ◽  
Radio Access ◽  
Lte Advanced ◽  
Coverage Extension

Decode-and-forward relaying is a promising enhancement to existing radio access networks and is currently being standardized in 3GPP to be part of the LTE-Advanced release 10. Two inband operation modes of relay nodes are to be supported, namely Type 1 and Type 1b. Relay nodes promise to offer considerable gain for system capacity or coverage depending on the deployment prioritization. However, the performance of relays, as any other radio access point, significantly depends on the propagation characteristics of the deployment environment. Hence, in this paper, we investigate the performance of Type 1 and Type 1b inband relaying within the LTE-Advanced framework in different propagation scenarios in terms of both coverage extension capabilities and capacity enhancements. A comparison between Type 1 and Type 1b relay nodes is as well presented to study the effect of the relaying overhead on the system performance in inband relay node deployments. System level simulations show that Type 1 and Type 1b inband relay deployments offer low to very high gains depending on the deployment environment. As well, it is shown that the effect of the relaying overhead is minimal on coverage extension whereas it is more evident on system throughput.

scholarly journals Textile Multiantenna Technology and Relaying Architectures for Emergency Networks

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Estefanía Crespo-Bardera ◽  
Adrián Vega Delgado ◽  
Aarón Garrido Martín ◽  
Alfonso Fernández-Durán ◽  
Matilde Sánchez-Fernández
Keyword(s):  
Communication Networks ◽  
High Reliability ◽  
Multiple Input Multiple Output ◽  
Communication Technologies ◽  
Relay Nodes ◽  
Lte Advanced ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Emergency Systems

Every year around 200 million people are affected by hazards of different nature. In most of these situations public protection and disaster relief personnel are usually the first responders to provide help. To provide differential relief coverage in these scenarios, novel communication and network functionalities are being demanded, relegating today’s narrowband private radio (PMR) emergency systems to the background. These are data-support, increased coverage, broadband communication, and high reliability which will be addressed by novel communication technologies such as Long Term Evolution (LTE), LTE Advanced-pro, and future 5G. In this work we tackle two key technological solutions for future emergency communication networks such as an architecture based on relay nodes and enhanced user equipment by means of multiple-input-multiple-output (MIMO) techniques.

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