Architecture Approaches for 5G Millimetre Wave Access Assisted by 5G Low-Band Using Multi-Connectivity

Aziz, Danish; Gebert, Jens; Ambrosy, Anton; Bakker, H.C.M. de; Halbauer, Hardy

doi:10.1109/glocomw.2016.7848840

Cited by 26 publications

(24 citation statements)

References 7 publications

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“…Mm-waves can also be assisted by lower frequencies communications. A similar solution is proposed in [57] that considers a non-standalone mm-wave MC, with mmAPs and lower frequency technologies, e.g., LTE, that act as the data and the control planes, respectively. This is a common approach I Introduction for 5G systems and it is used also in [58] to improve and speed up the initial access and the beamforming alignment.…”

Section: Multi-connectivitymentioning

confidence: 99%

Analysis and Optimization for Robust Millimeter-Wave Communications

Tatino

2021

Linköping Studies in Science and Technology. Dissertations

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Section: Multi-connectivitymentioning

confidence: 99%

Analysis and Optimization for Robust Millimeter-Wave Communications

Tatino

2021

Linköping Studies in Science and Technology. Dissertations

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“…The self transition probability of the state is , and the self transition probability of the state is , where 0 < < 1 and 0 < < 1. We assume that the source has access to the state of Channel 1, but with one Following the application settings in [2,10,26,27,33], a packet can be transmitted using only one channel at a time, i.e., the two channels cannot be used simultaneously. The scheduler decides which channel to be used to transmit a packet at each time slot.…”

Section: System Model and Problem Formulation 31 System Modelsmentioning

confidence: 99%

“…Real-world smartphone experiments have shown that even obstructions by hands could significantly degrade the mmWave throughput [22]. One solution to mitigate this effect is to let sub-6GHz coexist with mmWave to form two heterogeneous channels, so that the user equipment can offload data to sub-6GHz when mmWave communications are unfeasible [2,26,27,33]. Some work has already been done based on mmWave/sub-6GHz heterogeneous networks [10,13].…”

Section: Introductionmentioning

confidence: 99%

Minimizing Age of Information via Scheduling over Heterogeneous Channels

Pan

Bedewy

Sun

et al. 2021

Proceedings of the Twenty-Second International Symposium on Theory, Algorithmic Foundations, and Protocol Design for Mobile Net

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In this paper, we study the problem of minimizing the age of information when a source can transmit status updates over two heterogeneous channels. Our work is motivated by recent developments in 5G mmWave technology, where transmissions may occur over an unreliable but fast (e.g., mmWave) channel or a slow reliable (e.g., sub-6GHz) channel. The unreliable channel is modeled as a time-correlated Gilbert-Elliot channel, where information can be transmitted at a high rate when the channel is in the "ON" state. The reliable channel provides a deterministic but lower data rate. The scheduling strategy determines the channel to be used for transmission with the aim to minimize the time-average age of information (AoI). The optimal scheduling problem is formulated as a Markov Decision Process (MDP), which in our setting poses some significant challenges because e.g., supermodularity does not hold for part of the state space. We show that there exists a multi-dimensional threshold-based scheduling policy that is optimal for minimizing the age. A low-complexity bisection algorithm is further devised to compute the optimal thresholds. Numerical simulations are provided to compare different scheduling policies.

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“…An extensive view of the underlying architecture supporting multi-connectivity across different RATs is provided in [4], [5], where it was concluded that such multi-RAT architecture should employ common high layer protocol as well as centralized radio resource management. Specific characteristics and requirements of multi-connectivity when applied to millimeter-Wavelength (mmW) networks are provided in [6], [7]. Specifically, [6] highlights the benefit of centralized controller decisions with regards to handover and scheduling, while [7] emphasizes the need for low-band support of 5G high frequency networks in the form of multi-connectivity.…”

Section: A the Concept Of Multi-connectivitymentioning

confidence: 99%

“…Specific characteristics and requirements of multi-connectivity when applied to millimeter-Wavelength (mmW) networks are provided in [6], [7]. Specifically, [6] highlights the benefit of centralized controller decisions with regards to handover and scheduling, while [7] emphasizes the need for low-band support of 5G high frequency networks in the form of multi-connectivity. A performance assessment of multi-connectivity when implemented across intra-or inter-site deployments is given in [8], while mobility related improvements of dense deployments by means of multi-connectivity are analyzed in [9].…”

Section: A the Concept Of Multi-connectivitymentioning

confidence: 99%

5G Multi-Connectivity with Non-Ideal Backhaul: Distributed vs Cloud-Based Architecture

Michalopoulos¹,

Maeder²,

Kolehmainen³

2018

2018 IEEE Globecom Workshops (GC Wkshps)

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We investigate the throughput performance of multiconnectivity over Heterogeneous Networks (HetNets). Specifically, we examine the effect of non-ideal backhaul on the throughput for two architecture scenarios, namely: i) The distributed HetNet scenario where the multi-connectivity anchor is co-located with the macro cell; ii) the cloud-based HetNet scenario, where the multi-connectivity anchor point is located at a centralized network point. An extensive set of simulations is conducted, followed by an investigation of the effect of the backhaul latency, packet file size and offered load on the throughput. It is shown that the cloud-based HetNet architecture leads to a superior throughput performance than that of the distributed architecture. Moreover, it is shown that the backhaul delay considerably affects the overall throughput for both architecture options.

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Architecture Approaches for 5G Millimetre Wave Access Assisted by 5G Low-Band Using Multi-Connectivity

Cited by 26 publications

References 7 publications

Analysis and Optimization for Robust Millimeter-Wave Communications

Analysis and Optimization for Robust Millimeter-Wave Communications

Minimizing Age of Information via Scheduling over Heterogeneous Channels

5G Multi-Connectivity with Non-Ideal Backhaul: Distributed vs Cloud-Based Architecture

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