Handover within 3GPP LTE: Design Principles and Performance

Dimou, Konstantinos; Wang, Min; Yang, Yu; Kazmi, Muhammmad; Larmo, Anna; Pettersson, Jonas; Müller, Walter; Timner, Ylva

doi:10.1109/vetecf.2009.5378909

Cited by 161 publications

(98 citation statements)

References 3 publications

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“…For multi-cell, all UEs were initially located in the first cell, moving towards other cells at a specific speed of 20 m/s. We used a 3GPP-specified A3-RSRP handover algorithm that utilizes Reference Signal Received Power (RSRP) measurements and event A3, as designed in [43]. Event A3 is defined as a reporting triggering event which is activated when the neighboring cell's measured RSRP is better than that of the serving cell by a certain offset.…”

Section: Simulation Results and Performance Evaluationmentioning

confidence: 99%

Effect of AQM-Based RLC Buffer Management on the eNB Scheduling Algorithm in LTE Network

et al. 2017

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Abstract:With the advancement of the Long-Term Evolution (LTE) network and smart-phones, most of today's internet content is delivered via cellular links. Due to the nature of wireless signal propagation, the capacity of the last hop link can vary within a short period of time. Unfortunately, Transmission Control Protocol (TCP) does not perform well in such scenarios, potentially leading to poor Quality of Service (QoS) (e.g., end-to-end throughput and delay) for the end user. In this work, we have studied the effect of Active Queue Management (AQM) based congestion control and intra LTE handover on the performance of different Medium Access Control (MAC) schedulers with TCP traffic by ns3 simulation. A proper AQM design in the Radio Link Control (RLC) buffer of eNB in the LTE network leads to the avoidance of forced drops and link under-utilization along with robustness to a variety of network traffic-loads. We first demonstrate that the original Random Early Detection (RED) linear dropping function cannot cope well with different traffic-load scenarios. Then, we establish a heuristic approach in which different non-linear functions are proposed with one parameter free to define. In our simulations, we demonstrate that the performance of different schedulers can be enhanced via proper dropping function.

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Section: Simulation Results and Performance Evaluationmentioning

confidence: 99%

Effect of AQM-Based RLC Buffer Management on the eNB Scheduling Algorithm in LTE Network

et al. 2017

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“…[18] Moreover, owing to the small size of the femtocells, the frequency of handovers will also increase. As a result, a fast moving UE may find it hard to remain connected with fast moving femtocells in its path.…”

Section: B Femtocellmentioning

confidence: 99%

“…As a result, a fast moving UE may find it hard to remain connected with fast moving femtocells in its path. [18] Hence, the concept of a small, low-cost, customer-deployable home base station offers the prospect of reducing churn by improving indoor coverage and saving costs by offloading the macro radio network.…”

Section: B Femtocellmentioning

confidence: 99%

A Performance Evaluation of WLAN-Femtocell-LTE beyond the Capacity Crunch. Does Femtocell have to overcome WLAN or can they coexist in HetNets?

Silva

Araújo

Francês

2016

J. Microw. Optoelectron. Electromagn. Appl.

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“…The threshold value can be predefined by each cluster or by the network (as employed in the handoff algorithm for practical wireless networks), and it can be a parameter to optimize according to the network design objective. Note that the measurements required from the users are based on the long term channel gain, which can be obtained from the ones used for the handoff process [33]. Hence, there is no measurements and feedback increase from the users by using this user partition method.…”

Section: Cooperative Frequency Reuse Schemementioning

confidence: 99%

Resource allocation for clustered network MIMO OFDMA systems

Botella

Svensson

2012

J Wireless Com Network

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In this article, we address the resource allocation problem for the downlink of a large network multiple input multiple output orthogonal frequency division multiplexing system with 3-sector base stations. The system is statically divided into a number of disjoint clusters of sectors. A two-step resource allocation scheme is proposed involving the inter-cluster and the intra-cluster levels. As a first step or inter-cluster level, two cooperative frequency reuse approaches are designed to mitigate the inter-cluster interference. A user partition method is proposed to divide the users of each cluster into cluster-edge and cluster-center users. To balance the cell-edge and the cellaverage performance, a fairness jug function is introduced to determine the frequency partition of the cooperative frequency reuse approaches. Then, as a second step or intra-cluster level, a utility-based joint scheduling and power allocation algorithm is proposed for each cluster, to maximize the sum utility of all users in the cluster under per-sector power constraints. Zero-forcing joint transmission is used across multiple sectors within the same cluster. Simulation results show that the proposed scheme can efficiently reduce the inter-cluster interference and provide considerable performance improvement in terms of both the cell-edge and cell-average user data rate. The proposed two-step resource allocation scheme can be implemented independently in each cluster without inter-cluster information exchange, which is an attractive property for practical systems, since it reduces both the network signaling overhead and the computational complexity.

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Handover within 3GPP LTE: Design Principles and Performance

Cited by 161 publications

References 3 publications

Effect of AQM-Based RLC Buffer Management on the eNB Scheduling Algorithm in LTE Network

Effect of AQM-Based RLC Buffer Management on the eNB Scheduling Algorithm in LTE Network

A Performance Evaluation of WLAN-Femtocell-LTE beyond the Capacity Crunch. Does Femtocell have to overcome WLAN or can they coexist in HetNets?

Resource allocation for clustered network MIMO OFDMA systems

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