Downlink and Uplink Cell Association in Sub-6GHz and Millimeter Wave 5G Heterogeneous Networks

Hisham Elshaer; Mandar N. Kulkarni; Federico Boccardi; Jeffrey G. Andrews; Mischa Dohler

doi:10.1109/GLOCOMW.2016.7848880

Downlink and Uplink Cell Association in Sub-6GHz and Millimeter Wave 5G Heterogeneous Networks

Hisham Elshaer, Mandar N. Kulkarni, Federico Boccardi, Jeffrey G. Andrews, Mischa Dohler

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

7 Citations (Scopus)

Abstract

Millimeter wave (mmWave) frequencies promise much higher capacities than conventional sub-6GHz networks thanks to the much wider bandwidth. However, mmWaves suffer from poor penetration and diffraction characteristics and are therefore expected to be deployed as an overlay to existing sub-6GHz networks. We develop a general analytical framework where we derive the biased uplink and downlink cell association as well as the SINR and rate coverage probabilities in such a hybrid system. Simulation results are presented to validate the analytical model. Using the analytical results, we show that decoupled uplink and downlink association plays a key role in this mixed deployment. We then show the effect of small cell biasing on the SINR and rate trends where very high biasing values are desirable to harness the gains from the wide bandwidths at mmWaves. In addition, robust modulation and coding schemes are needed to operate under very low SINR resulting from the aggressive bias values.

Original language	English
Title of host publication	2016 IEEE Globecom Workshops, GC Wkshps 2016 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Number of pages	6
ISBN (Print)	9781509024827
DOIs	https://doi.org/10.1109/GLOCOMW.2016.7848880
Publication status	Published - 8 Feb 2017
Event	2016 IEEE Globecom Workshops, GC Wkshps 2016 - Washington, United States Duration: 4 Dec 2016 → 8 Dec 2016

Conference

Conference	2016 IEEE Globecom Workshops, GC Wkshps 2016
Country/Territory	United States
City	Washington
Period	4/12/2016 → 8/12/2016

Keywords

Cell association
Decoupling
Downlink
Millimeter-wave
Stochastic geometry
Sub-6GHz
Uplink

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10.1109/GLOCOMW.2016.7848880

Cite this

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abstract = "Millimeter wave (mmWave) frequencies promise much higher capacities than conventional sub-6GHz networks thanks to the much wider bandwidth. However, mmWaves suffer from poor penetration and diffraction characteristics and are therefore expected to be deployed as an overlay to existing sub-6GHz networks. We develop a general analytical framework where we derive the biased uplink and downlink cell association as well as the SINR and rate coverage probabilities in such a hybrid system. Simulation results are presented to validate the analytical model. Using the analytical results, we show that decoupled uplink and downlink association plays a key role in this mixed deployment. We then show the effect of small cell biasing on the SINR and rate trends where very high biasing values are desirable to harness the gains from the wide bandwidths at mmWaves. In addition, robust modulation and coding schemes are needed to operate under very low SINR resulting from the aggressive bias values.",

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Elshaer, H, Kulkarni, MN, Boccardi, F, Andrews, JG & Dohler, M 2017, Downlink and Uplink Cell Association in Sub-6GHz and Millimeter Wave 5G Heterogeneous Networks. in 2016 IEEE Globecom Workshops, GC Wkshps 2016 - Proceedings., 7848880, Institute of Electrical and Electronics Engineers Inc., 2016 IEEE Globecom Workshops, GC Wkshps 2016, Washington, United States, 4/12/2016. https://doi.org/10.1109/GLOCOMW.2016.7848880

Downlink and Uplink Cell Association in Sub-6GHz and Millimeter Wave 5G Heterogeneous Networks. / Elshaer, Hisham; Kulkarni, Mandar N.; Boccardi, Federico et al.
2016 IEEE Globecom Workshops, GC Wkshps 2016 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2017. 7848880.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

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AU - Elshaer, Hisham

AU - Kulkarni, Mandar N.

AU - Boccardi, Federico

AU - Andrews, Jeffrey G.

AU - Dohler, Mischa

PY - 2017/2/8

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N2 - Millimeter wave (mmWave) frequencies promise much higher capacities than conventional sub-6GHz networks thanks to the much wider bandwidth. However, mmWaves suffer from poor penetration and diffraction characteristics and are therefore expected to be deployed as an overlay to existing sub-6GHz networks. We develop a general analytical framework where we derive the biased uplink and downlink cell association as well as the SINR and rate coverage probabilities in such a hybrid system. Simulation results are presented to validate the analytical model. Using the analytical results, we show that decoupled uplink and downlink association plays a key role in this mixed deployment. We then show the effect of small cell biasing on the SINR and rate trends where very high biasing values are desirable to harness the gains from the wide bandwidths at mmWaves. In addition, robust modulation and coding schemes are needed to operate under very low SINR resulting from the aggressive bias values.

AB - Millimeter wave (mmWave) frequencies promise much higher capacities than conventional sub-6GHz networks thanks to the much wider bandwidth. However, mmWaves suffer from poor penetration and diffraction characteristics and are therefore expected to be deployed as an overlay to existing sub-6GHz networks. We develop a general analytical framework where we derive the biased uplink and downlink cell association as well as the SINR and rate coverage probabilities in such a hybrid system. Simulation results are presented to validate the analytical model. Using the analytical results, we show that decoupled uplink and downlink association plays a key role in this mixed deployment. We then show the effect of small cell biasing on the SINR and rate trends where very high biasing values are desirable to harness the gains from the wide bandwidths at mmWaves. In addition, robust modulation and coding schemes are needed to operate under very low SINR resulting from the aggressive bias values.

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KW - Stochastic geometry

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Downlink and Uplink Cell Association in Sub-6GHz and Millimeter Wave 5G Heterogeneous Networks

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