5G challenges and QoS. Idea title: Handover challenges in 5G mobile Network Related Objective: Handover latency optimization
Rahil Ahmad Lebanese University Lebanon The MED-Dialogue project (611433) is co-funded by the European Community's ICT Programme under FP7
Objectives – 5G improve many QoS parameters: • 5G enhances E2E delay to about 1ms, introduces Small cells and no more white zones, Improves the RSCP by introducing small cells and High throughput (tens of Gbps) with large bandwidth for less prices. New challenges • Identifying the most relevant parameters that we should consider while selecting the new destination network during a transparent handover in 5G. • Choosing the best QoS parameters that improves the Handover latency and select the best destination network to Handover. • Deliverables: finding an algorithm for network selection that considers the most appropriate QoS parameters. • Testing deliverables using NS3. !!! May 2016
MED-Dialogue 2. Networking Event - www.MED-Dialogue.eu
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Alliance and workgroup studying the 5G Ø the METIS (Mobile and Wireless Communications Enablers for the Twenty-Twenty Information Society) Ø The European Union started research work of 5G at the end of 2012. Ø In China, IMT-2020 promotion group was founded in April of 2013.. Ø In Korea, Samsung tested and verified the technical feasibility of 5G. Ø The International Telecommunication Union (ITU) has also started its study on the International Mobile Ø Third Generation Partnership Project (3GPP) also work on 5G.
5G Capability according to alliance User Experienced data rate: 0.1-1 Gbps. Connection density: 1 million connection per square kilometer. End-to-end latency: millisecond level. Traffic volume density: tens of Gbps per square kilometer. Mobility: higher than 500 Km/h. Peak data rate: tens of Gbps. No white zone. Latency time between two point will be improved from 30-40 ms to 1 ms. Ø we hope that the energy consumption of batteries, for some types of objects, decreases almost by a factor of 1000. Ø 50 billion ubiquitous connected devices are expected to utilize the cellular network services by the end of the year 2020. Ø Ø Ø Ø Ø Ø Ø Ø
May 2016
MED-Dialogue 2. Networking Event - www.MED-Dialogue.eu
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5G promotes Ø Internet of things (IoT): Ø Cloud computing Ø Interoperability between objects and smart network Ø Smart city and home environment Ø Concept of Big Data (impossible with databases). Ø Interactive applications (games,…) Ø HD 3D videos Ø Smart grid (electricity management and optimization, distribution, consomation,…) Ø èconnected society is expected è zero latency is it possible?
May 2016
MED-Dialogue 2. Networking Event - www.MED-Dialogue.eu
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5G && IoT
May 2016
MED-Dialogue 2. Networking Event - www.MED-Dialogue.eu
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Cells and classifications A macro-cell covers all the small-cells of different types, e.g. femtocell and pico-cell The small-cell enhances the coverage and services of a macrocell and microcell
Benefits: ü Big capacity ü High performance ü Easier operation ü Faster deployment Challenges: ü Interference ü Resource management ü backhaul
Advantages/disadvantages of small cells Ø High data rate and efficient spectrum use: The small physical separation between a SBS and UEs (served by the same SBS) leads to a higher data rate and a better indoor coverage Ø Energy saving: The use of small-cells reduces the energy consumption UEs (by allowing UEs to communicate at a shorter range with low signaling overhead). Ø Money saving: It is more economical to install a SBS without any cumbersome planning as compared to a MBS Ø Less congestion to a MBS: SBSs offload UEs from a MBS so that the MBS is lightly loaded and less congested, and hence, Ø improve the system capacity
Disadvantages of small cells The small-cells indeed impose an initial cost to the infrastructure, but less than the cost associated with a MBS. Moreover, a frequent authentication is mandatory due to frequent handoff operations. Further, an active or passive (on/off) state update of any small-cell would definitely result in frequent topological updates
Handoff Management in 5G Networks handoff management in 5G networks harder for the following reasons: 1. 2. 3. 4.
May 2016
The network densification very high mobility the zero latency and accessing multi-RATs
MED-Dialogue 2. Networking Event - www.MED-Dialogue.eu
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Types of handoff in 5G networks 1. Intra-macro-cell handoff : refers to handoff between small-cells that are working under a single MBS 2. Inter-macro-cell handoff : refers to handoff between macro-cells. It may also lead to handoff between two small-cells that are working under different MBSs. Note that if the handover between small-cells of two different MBSs is not done properly, then the inter-macrocell handoff also fails 3. Multi-RATs handoff : refers to handoff of a UE from a RAT to other RAT May 2016
MED-Dialogue 2. Networking Event - www.MED-Dialogue.eu
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Open issues Handoff mechanisms are yet to be explored. It will be interesting to find solutions to extremely dense HetNets. Furthermore, the handoff process may also create interference to other UEs; hence, it is required to develop algorithms while considering different types of interferences in 5G networks and a tradeoff between the number of handoffs and the level of interference in the network
May 2016
MED-Dialogue 2. Networking Event - www.MED-Dialogue.eu
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Type of collaboration sought & Contact Info n I am looking for: ¨ Partners: the preferred partners will be a company or academic R&D that work in QoS for mobile network. ¨ The profile of partners can be from the academic domain or any party (Technology developer) with big expertise in the QoS parameters for mobile network. ¨ Proposal Co-ordinator to further develop the idea: mainly I prefer someone from R&D services in mobile telecom company.
n Contact Info: ¨ Name: Rahil Ahmad ¨ Email:
[email protected] ¨ Telephone: 00-961-70936141
May 2016
MED-Dialogue 2. Networking Event - www.MED-Dialogue.eu
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Thank you for your attention
Any question
May 2016
MED-Dialogue 2. Networking Event - www.MED-Dialogue.eu
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