Evaluation of load control strategies in an UTRA/FDD network

Rave, Wolfgang; Köhler, Torsten; Voigt, Jens; Fettweis, Gerhard

doi:10.1109/vetecs.2001.944093

Cited by 18 publications

(9 citation statements)

References 2 publications

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“…One way of doing this is by reducing the maximum bit rate of the currently admitted users depending on their service requirements. In the literature, there are few works addressing the congestion control problem for WCDMA networks [5,[25][26][27][28]. Moreover, to the authors' best knowledge all the approaches are based on actions that only affect the cell in which congestion is triggered, but do not exploit the possible interactions between cells should traffic loads and service mixes differ.…”

Section: Related Work and Contributions Of This Papermentioning

confidence: 99%

A novel approach to smart multi-cell radio resource management based on load gradient calculations

2007

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This paper presents a novel methodology for capturing the coupling between the different cells in both the uplink and downlink directions in a Wideband Code Division Multiple Access (WCDMA) scenario. It is based on the definition and computation of the gradient of the uplink cell load factor and the downlink transmitted power, which are the two main parameters that reflect the actual cell load in the two link directions. The paper shows that the gradient is able to capture the relevant information about the spatial distribution of traffic, which has an impact on cell performance. The proposed methodology is also used as the basis for defining and evaluating new Radio Resource Management (RRM) strategies that operate at a multi-cell level.

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Section: Related Work and Contributions Of This Papermentioning

confidence: 99%

A novel approach to smart multi-cell radio resource management based on load gradient calculations

2007

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“…Also at the radio access level it has also been addressed in a number of papers, e.g. [7] and [8], although considering one single RAT. In [9], the authors presented a framework for common congestion control taking into account a scenario where CDMA and TDMA technologies were deployed.…”

Section: Introductionmentioning

confidence: 99%

On Managing Multiple Radio Access Congestion Events in B3G Scenarios

Gelabert

Perez-Romero

Sallent

et al. 2007

2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring

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Abstract-Among the Common Radio Resource Management (CRRM) functions that are responsible for the proper allocation of resources in a multi-access network, congestion control is the one devoted to overcome potential QoS failures due to the inherent dynamics of the network. In this paper we address the problem of congestion control in a scenario considering the GSM/EDGE Radio Access Network (GERAN) and the UMTS Terrestrial Radio Access Network (UTRAN). In particular, we face the problem where the two available Radio Access Technologies (RATs) undergo simultaneous congestion situations. For this case, a congestion resolution scheme based on Vertical (inter-system) Handover (VHO) jointly with a bit-rate reduction (BRR) scheme is proposed and evaluated for a mixed services scenario considering voice and data users.

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“…Congestion control at the radio access level has also been addressed in a number of papers, e.g. [7] and [8], nevertheless considering one single RAT. To our knowledge, few efforts have been devoted on congestion detection and resolution at the radio interface comprising various RATs [9].…”

Section: Introductionmentioning

confidence: 99%

Congestion Control Strategies in Multi-Access Networks

Gelabert

Perez-Romero

Sallent

et al. 2006

2006 3rd International Symposium on Wireless Communication Systems

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Abstract-This paper addresses the problematic of congestion control in the radio access interface when considering the allocation of voice and data services over several Radio Access Technologies (RATs). In particular, the GSMIEDGE Radio Access Network (GERAN) and the UMTS Terrestrial Radio Access Network (UTRAN) are considered for the evaluation of congestion control strategies. After a congestion situation in the radio access is detected, congestion resolution mechanisms are triggered in order to reduce the overload in the congested RAT(s). In this paper, a framework for the detection and resolution of congestion conditions in a multi-access network is presented. Moreover, three approaches intending to solve congestion situations are proposed and the evaluation of an inter-RAT handover algorithm for solving congestion events in GERAN is also presented.

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Evaluation of load control strategies in an UTRA/FDD network

Cited by 18 publications

References 2 publications

A novel approach to smart multi-cell radio resource management based on load gradient calculations

A novel approach to smart multi-cell radio resource management based on load gradient calculations

On Managing Multiple Radio Access Congestion Events in B3G Scenarios

Congestion Control Strategies in Multi-Access Networks

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