Interference Mitigation Methods for LTE-Advanced Networks with Macro and HeNB Deployments

Szufarska, Agnieszka; Safjan, Krystian; Pedersen, Klaus I.; Frederiksen, Frank; Strzyż, Stanisław

doi:10.1109/vetecf.2011.6093234

Cited by 7 publications

(5 citation statements)

References 4 publications

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“…The suburban environment is characterized by a larger macro inter-site distance of 1732 meters and CSG HNBs placed inside separate single-floor residential family homes. More information on the simulation assumptions for both the dense urban and suburban scenario is available in [15,16].…”

Section: Simulation Resultsmentioning

confidence: 99%

“…The baseline cases include: (i) no power control (NOPC), where the HNBs simply transmit at their maximum power of 15 dBm; and (ii) an adaptive HNB PC scheme where the HNB Tx power is adjusted depending on RSCP from the strongest macro-cell. The latter method is referred to as "3GPP," as this solution has recently been adopted by 3GPP for the LTE femtocells [15]. To be more specific, the 3GPP solution for the HNB transmission power expressed in dBm equals min CP + 55dB;…”

Section: Simulation Resultsmentioning

confidence: 99%

“…The end-user required uplink or downlink throughput is not guaranteed in the entire apartment/house if Equations (10), (12) and (15) are not all fulfilled in the first iteration of the proposed QoS-SP-IM algorithm. If Equations (10), (12) and (15) are not fulfilled the femtocell range was reduced during the execution of the algorithm. However, from an operator's point of view, the macro performance in the surrounding macrocells is preserved and is not degraded due to dense HNB deployment but at the cost of higher outage in femtocell performance.…”

Section: Step 4-downlink Parameter Verificationmentioning

confidence: 99%

See 2 more Smart Citations

QoS Self-Provisioning and Interference Management for Co-Channel Deployed 3G Femtocells

et al. 2013

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A highly efficient self-provisioning interference management scheme is derived for 3G Home Node-Bs (HNB). The proposed scheme comprises self-adjustment of the HNB transmission parameters to meet the targeted QoS (quality of service) requirements in terms of downlink and uplink guaranteed minimum throughput and coverage. This objective is achieved by means of an autonomous HNB solution, where the transmit power of pilot and data are adjusted separately, while also controlling the uplink interference pollution towards the macro-layer. The proposed scheme is evaluated by means of extensive system level simulations and the results show significant performance improvements in terms of user throughput outage probability, power efficiency, femtocell coverage, and impact on macro-layer performance as compared to prior art baseline techniques. The paper is concluded by also showing corresponding measurements from live 3G high-speed packet access (HSPA) HNB field-trials, confirming the validity of major simulation results and assumptions.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: Simulation Resultsmentioning

confidence: 99%

Section: Step 4-downlink Parameter Verificationmentioning

confidence: 99%

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QoS Self-Provisioning and Interference Management for Co-Channel Deployed 3G Femtocells

et al. 2013

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“…For details and a more comprehensive introduction of HetNet, readers may refer to [92][93][94][95][96][97][98]. More specifically, studies on different aspects of the Pico and Femto cell deployments in LTE-Advanced networks can be found in [99][100][101][102][103][104][105] and [106][107][108][109][110][111][112][113][114][115][116][117][118][119][120][121][122][123][124] respectively. Small cells increase the capacity of the networks with an acceptable overall power consumption increase.…”

Section: Overviewmentioning

confidence: 99%

LTE-Advanced Radio Access Enhancements: A Survey

Dehghani

Arshad

MacKenzie

2014

Wireless Pers Commun

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Long Term Evolution Advanced (LTE-Advanced) is the next step in LTE evolution and allows operators to improve network performance and service capabilities through smooth deployment of new techniques and technologies. LTE-Advanced uses some new features on top of the existing LTE standards to provide better user experience and higher throughputs. Some of the most significant features introduced in LTE-Advanced are carrier aggregation, enhancements in heterogeneous networks, coordinated multipoint transmission and reception, enhanced Multiple Input Multiple Output (MIMO) usage and deployment of relay nodes in the radio network. Mentioned features are mainly aimed to enhance the radio access part of the cellular networks. This survey article presents an overview of the key radio access features and functionalities of the LTE-Advanced radio access network, supported by the simulation results. We also provide a detailed review of the literature together with a very rich list of the references for each of the features. An LTE-Advanced roadmap and the latest updates and trends in LTE markets are also presented.

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“…Various interference management solutions have been extensively studied for such cases for both HSPA and LTE; see [3][4][5][6]. However, the majority of these existing performance and interference management studies rely solely on theoretical models and simulations, and therefore the validity of the conclusions depends on the underlying assumptions.…”

Section: Introductionmentioning

confidence: 99%

Joint Macro and Femto Field Performance and Interference Measurements

Jørgensen

Isotalo

Pedersen

et al. 2012

2012 IEEE Vehicular Technology Conference (VTC Fall)

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In this paper macro performance in a co-channel macro and femto setup is studied. Measurements are performed in a live Universal Mobile Telecommunication System (UMTS) network. It is concluded that femto interference does not affect macro downlink (DL) performance as long as the macro Received Signal Code Power (RSCP) is stronger than femto RSCP. We also conclude that a macro escape carrier is a robust DL interference management solution. In uplink (UL) direction it is shown that a single femto UE close to macro cell can potentially cause a noise rise of 6 dB in the surrounding macro cell. In order to limit the noise rise from femto UEs, femto UE power capping and lowering femto common pilot channel (CPICH) power is recommended. The consequence is less uplink interference towards the macro, but also decreased femto coverage. Measurements close to macro cell centre showed femto coverage radius smaller than 5 meter -with realistic power settings. This makes co-channel femto deployment less promising in dense macro environments with good macro RSCP coverage.I.

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Interference Mitigation Methods for LTE-Advanced Networks with Macro and HeNB Deployments

Cited by 7 publications

References 4 publications

QoS Self-Provisioning and Interference Management for Co-Channel Deployed 3G Femtocells

QoS Self-Provisioning and Interference Management for Co-Channel Deployed 3G Femtocells

LTE-Advanced Radio Access Enhancements: A Survey

Joint Macro and Femto Field Performance and Interference Measurements

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