Joint time-frequency-power resource allocation for low-medium-altitude platforms-based WiMAX networks

Zhao, Liqiang; Li, Cong; Liu, Fawang; Yang, Kun; Zhang, Hongmei

doi:10.1049/iet-com.2010.0530

Cited by 17 publications

(19 citation statements)

References 19 publications

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“…Each UE randomly opts for one of the four services. In order to evaluate the attainable performance of the proposed algorithm, the well-established Max-C/I, RR, Max-min algorithm and the joint time-frequency-power allocation strategy algorithm, which was referred as JEEP in [1], are employed in the same scenarios. show the system's throughput, capacity and fairness for different number of UEs respectively, where the channel bandwidth is fixed at 20MHz.…”

Section: Joint Time-frequency-power Resource Allocationmentioning

confidence: 99%

“…In the JEEP algorithm [1], the resources are proportionally allocated according to each UE's channel conditions after satisfying the minimum requirement. Thus, the JEEP algorithm strikes a tradeoff between throughput and fairness, but, its capacity is significantly lower than that of the proposed algorithm, which achieves the highest capacity by sacrificing its throughput and fairness.…”

Section: Joint Time-frequency-power Resource Allocationmentioning

confidence: 99%

“…A similar scenario occurred after the recent tsunami near Sendai, Japan. Since then low-medium-altitude aerial platforms (LMAPs) as emergency communication systems, have attracted significant interest from government, academia and industry [1]. Captive balloons are stationary at low-medium-altitudes ranging from about 2 km to 20 km and cover a wide area.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the authors of [3] and [4] proposed algorithms for maximizing the system throughput, while ensuring fairness in both the LTE downlink (DL) and uplink (UL). A joint resource allocation algorithm simultaneously considering the time-frequency-power-domain based on the Nash bargaining solution (NBS) was implemented in a multi-cell WiMAX-based LMAP system in our previous work [1]. Moreover, providing seamless power supply for LMAPs is a challenging problem, especially in disaster areas.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Radio Resource Allocation for Low-Medium-Altitude Aerial Platform Based TD-LTE Networks against Disaster

Zhao

Adachi

et al. 2012

2012 IEEE 75th Vehicular Technology Conference (VTC Spring)

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Abstract-In order to provide an increased capacity for voice users in emergency scenarios, a low-medium-altitude aerial platform based time-division-duplex long term evolution (TD-LTE) system referred to as Aerial LTE, is presented in this paper. Furthermore, a novel radio resource allocation mechanism is proposed for both the Aerial LTE downlink and uplink, which is modeled as a cooperative game to provide real-time voice communications with as many users as possible. Our simulation results demonstrate that compared with the traditional radio resource management algorithms, the proposed algorithm achieves the largest capacity, i.e., the number of serviced users.

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Section: Joint Time-frequency-power Resource Allocationmentioning

confidence: 99%

Section: Joint Time-frequency-power Resource Allocationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Radio Resource Allocation for Low-Medium-Altitude Aerial Platform Based TD-LTE Networks against Disaster

Zhao

Adachi

et al. 2012

2012 IEEE 75th Vehicular Technology Conference (VTC Spring)

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“…Whereas, authors in [2] proposed a joint time-frequency-power resource allocation for low-medium-altitude platforms based Worldwide Interoperability for Microwave Access (WiMAX) networks to improve the performances and services of emergency communications. In [3], authors also proposed a joint subchannel and power allocation algorithm for the downlink of an orthogonal frequencydivision multiple access (OFDMA) femtocell (FC) and macrocell (MC) based network.…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach for Centralized 3D Radio Resource Allocation and Scheduling in Dense HetNets for 5G Control-/User-plane Separation Architectures

Saha¹,

Zhao²,

Aswakul³

2017

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Abstract.This paper presents a centralized 3-dimensional radio resources (namely, time, frequency, and power) allocation and scheduling approach for control-plane and user-plane (C-/U-plane) separation architectures for fifth generation mobile networks. A central station is considered where schedulers of all base stations (BSs) are located. We consider a multi-tier network that comprises of a macrocell BS (MCBS), several outdoor picocell BSs, and a number of indoor femtocell BSs (FCBSs) deployed in a number of multi-storage buildings. The system bandwidth is reused in FCBSs within each building orthogonally. In contrast to the conventional almost blank subframe, we consider a fully blank subframe based time-domain enhanced intercell interference coordination to split completely C-/U-plane traffic such that the controlplane can be served only by the MCBS and the user-plane of user equipments by their respective BSs. We propose two power management schemes for FCBSs based on whether or not the coordinated multi-point communication with joint transmission (JT CoMP) is employed during off-state of a FCBS and develop a power control mechanism for both a single user and multi-user per FCBS scenarios. An optimal value of average activation factor (OAF) for a FCBS is derived to trade-off its serving capacity and transmit power saving factor. It is shown that in order to improve the network capacity, a FCBS needs to operate at an average activation factor (AAF) greater than its OAF using JT CoMP to serve neighboring on-state FCBSs during its normal off-state, whereas at an AAF less than the OAF to improve the energy efficiency. With a system level simulation, we show that the capacity of a FCBS increases, whereas its power saving factor decreases linearly with an increase in its AAF because of serving increased traffic, and an OAF of 0.5 for the capacity scaling factor 2 1   and greater than 0.5 for 1   are found.

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Multiple resource allocation in device‐to‐device communication underlaying cellular networks from an end‐to‐end energy‐efficient perspective

2015

IET Communications

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In this study, a novel energy-efficient resource allocation (RA) scheme is proposed for device-to-device communication underlaying cellular networks from an end-to-end energy-efficient perspective. The time slot, subchannel (frequency) and power resources are allocated together to optimise the energy-efficiency (EE) performance. Furthermore, to match the practical communication situations and achieve the best EE performance, the timefrequency resource units (RUs) are used in a complete-shared pattern. Then, the multiuser interference is very severe and complex. With all these considerations, the energy-efficient RA problem is formulated as a mixed integer and nonconvex optimisation problem, which is an non-deterministic polynominal (NP)-hard problem and extremely difficult to solve. To obtain a desirable solution with a reasonable computation cost, the authors tackle this problem with two steps.Step 1, the RU allocation policy is obtained via a greedy search method, and the original optimisation problem is reduced to a non-convex fractional programming problem.Step 2, exploiting the properties of fractional programming and after some manipulations, they transform the reduced problem to a concave optimisation problem, and obtain the sub-optimal power allocation strategy through the Lagrange dual approach. Finally, simulation results are presented to validate the effectiveness of the proposed RA scheme.

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Joint time-frequency-power resource allocation for low-medium-altitude platforms-based WiMAX networks

Cited by 17 publications

References 19 publications

Radio Resource Allocation for Low-Medium-Altitude Aerial Platform Based TD-LTE Networks against Disaster

Radio Resource Allocation for Low-Medium-Altitude Aerial Platform Based TD-LTE Networks against Disaster

A Novel Approach for Centralized 3D Radio Resource Allocation and Scheduling in Dense HetNets for 5G Control-/User-plane Separation Architectures

Multiple resource allocation in device‐to‐device communication underlaying cellular networks from an end‐to‐end energy‐efficient perspective

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