Evolution of Positioning Techniques in Cellular Networks, from 2G to 4G

Campos, Rafael Saraiva

doi:10.1155/2017/2315036

Cited by 44 publications

(26 citation statements)

References 35 publications

(34 reference statements)

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“…Technological advancements have been continuously generating improved and faster ways to access the internet. For instance, the evolution of the mobile data network between 2G, 3G and 4G has shown a dramatic increase of the possibility of mobile internet access over the past 25 years (Saraiva Campos, 2017). This has opened up new doors to both public and private services based on ICT.…”

Section: Importance Of Internet Infrastructure In the Context Of Accementioning

confidence: 99%

Is Internet Access a Matter of Freedom of Expression? Some Examples from Ukraine

Kelichavyi¹,

Nyman-Metcalf

2019

Baltic Journal of European Studies

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Freedom of expression does not only mean absence of censorship or other restrictive content laws—it also means that people have real access to communication. Nowadays, internet is a key means of communication. In this article we explain the relevance of access to internet from legal, practical and market aspects for freedom of expression. To illustrate the question, we present the situation in Ukraine. We look at legislation, including restrictions due to national security—availability, affordability and accessibility of internet. Ukraine is an interesting example of a mixture of very positive indicators and some remaining restrictions.

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Section: Importance Of Internet Infrastructure In the Context Of Accementioning

confidence: 99%

Is Internet Access a Matter of Freedom of Expression? Some Examples from Ukraine

Kelichavyi¹,

Nyman-Metcalf

2019

Baltic Journal of European Studies

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“…Contents can be identified by naming contents at the network layer [8]. With positioning techniques in cellular networks [54], the locations of users can also be easily obtained. Based on these techniques, when a content request arrives, it will be routed to corresponding BS with limited signaling overhead.…”

Section: Implementation and Complexitymentioning

confidence: 99%

Joint Optimization of Content Placement and User Association in Cache‐Enabled Heterogeneous Cellular Networks Based on Flow‐Level Models

Ren

Zhao

et al. 2018

Wireless Communications and Mobile Computing

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Cache-enabled heterogeneous cellular networks (HCNs) have been investigated extensively to alleviate backhaul congestion and reduce content delivery delay. In this paper, we jointly optimize content placement and user association to minimize the average content delivery delay in cache-enabled HCNs based on flow-level models. This formulation considers (1) different timescales of content placement and content delivery, (2) locality of content popularity, and (3) the heterogeneity of spatial traffic distribution, which are often neglected in existing researches. The joint optimization problem is formulated as a mixed integer nonlinear programming problem in load-non-coupled and load-coupled models, respectively. We decouple this problem into two interrelated subproblems and resolve them individually. For the user association problem under a given content placement situation, we propose a content-level selective association algorithm, which allows the requests for different contents at the same location to connect to different base stations (BSs). In addition, we propose a greedy content caching algorithm to add contents to the caches of BSs in an iterative manner. These two algorithms are alternately executed until the caches of all the BSs are filled to capacity. Simulation results show that the proposed algorithm achieves better performance in terms of average delay and backhaul usage compared with traditional content placement and user association approaches.

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“…In this paper, we use various critical parameters [e.g., one-hop forwarding time, payload bitrate depending on message size, modulation, forward error correction (FEC), ACK, payload bitrate, and maximum transmission unit (MTU)] to measure simple router/bridge radio network performance. We focus on real operational wireless networks with two fixed nodes, or the other performances are measured in terms of bit error rate versus signal-to-noise ratio [15] for remote control applications of the industry such as SCADA and telemetry, electricity, weather, smart grid, outlets, and ATMs.…”

Section: Introductionmentioning

confidence: 99%

An effective practical method for narrowband wireless mesh networks performance

Rattal

Ar-Reyouchi

2019

SN Appl. Sci.

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This study presents a new practical measurement method for analyzing narrowband wireless mesh networks (NWMNs) application performance. It investigates a scenario for packet transmissions in NWMNs, leveraging wireless interconnection between two devices. It analyzes the effect of message size and channel spacing on the resulting bitrate, forwarding time and modulation rate through experimental results. We transmit a single packet for one hop, exploiting a versatile radio modem with very-high-frequency radios operating in the bridging or routing modes. The measurement results obtained, with the mentioned critical operating parameters, provide a quicker and clearer idea as well as conclusive evidence for overall network performance.

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Evolution of Positioning Techniques in Cellular Networks, from 2G to 4G

Cited by 44 publications

References 35 publications

Is Internet Access a Matter of Freedom of Expression? Some Examples from Ukraine

Is Internet Access a Matter of Freedom of Expression? Some Examples from Ukraine

Joint Optimization of Content Placement and User Association in Cache‐Enabled Heterogeneous Cellular Networks Based on Flow‐Level Models

An effective practical method for narrowband wireless mesh networks performance

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