6 5G Challenges Traffic Volume Use cases Connected Devices & 4/1/5G ChallengesAvalanche ofTraffic VolumeLarge diversity ofUse cases&RequirementsMassive growth inConnected DevicesFurther expansion of mobile broadbandAdditional traffic due to communicating machines“Communicating machines”Device-to-Device CommunicationsCar-to-Car Comm.Challenges: Fundamental difficulties that should be addressedNew requirements and characteristics due to communicating machines“1000x in ten years”“50 billion devices in 2020”6
9 5G FutureIntegration of access technologies into one seamless experienceEvolutionand / orand / orRevolutionComplementary new technologiesD2D CommunicationsMassive MIMOUltra-Dense NetworksRespond to traffic explosionExtend to novel applicationsUltra-Reliable Communications10 x longer battery lifefor low power M2MMoving Networksx higher typical user ratex higher number of connected devicesIncrease the fonts1000 x higher mobile data volume per areaMassive Machine CommunicationsHigher Frequencies5 x reduced E2E latencyExisting technologies in 20123GWifi4G
11 Spectrum Scenario: Future Landscape 90% Seminar - Spectrum sharing concept part IISpectrum Scenario: Future LandscapeDedicated licensed spectrum complemented with various forms of shared spectrumIn order to cope with the heavily increasing wireless data traffic in both human- and machine centric communications, radically more spectrum is needed for 5G system operation.The future development of regulation and technology will create a complex landscape of spectrum availability and access. Multiple frequency bands, subject to different regulation including various forms of shared spectrum, are expected to be available to wireless communication systems. Hence, technology needs to be designed in a flexible way so that it is capable of operating under different regulatory models and sharing modes.“Toolbox” of different sharing enablers requiredIn order for 5G system to work under such scenarios
14 METIS 5G ConceptA user-centric 5G system concept that efficiently integrates:the support of MMC and URC (ultra-reliable),the support of scalable data rates including very high data rates,the support of scalable data rates including very low latencies,for service provision to both consumers and devices/machines.The system that fulfils these requirements be flexible to provide different services at different times.The system architecture must provide native support for extreme Mobile Broadband (MBB) communication, MMC, URC, D2D, MN, and UDN.
15 5G Concept: development Best effortD2DCriticalArchitectureBackhaulGoalsAir Interface #11000x trafficDirectMMCGatewayAir Interface #2100x rateM2MBackhaul to moving100x devicesMNV2XNomadic nodesAir Interface #N10x batteryBackhaulUDNAir interfaceThis figure shows the mapping between goals, HTs, the HT clusters/aspects. It further indicates some of the commonalities (as also described by Petar) and possible new air interfaces to develop. Please note that the dashed lines are not complete, other cluster/aspects can be merged. Some cluster/aspects also map to architecture implementation, e.g., UDN and MN has implications to the RAN2.0 architecture (not shown in the figure)Base Layer5x lower latencySONURC-EURCURC-SMETIS ConceptURC-L
16 Useful LinksA. Osseiran et al, Scenarios for the 5G Mobile and Wireless Communications: the Vision of the METIS Project, IEEE Comm. Mag., May, To appear on https://www.metis2020.com/documents/publications/Deliverable D1.1, “Scenarios, requirements and KPIs for 5G mobile and wireless system”, June 2013Deliverable D2.1, “Requirement analysis and design approaches for 5G air interface”, Sept. 2013Deliverable D3.1, “Positioning of multi-node/multi-antenna transmission technologies”, Aug. 2013Deliverable D5.1, “Intermediate description of the spectrum needs and usage principles”, Sep. 2013Deliverable D4.1,“Summary on preliminary trade-off investigations and first set of potential network-level solutions”, Nov. 2013Deliverable D6.1,“Simulation guidelines”, Nov. 2013All deliverables can be downloaded from https://www.metis2020.com/documents/deliverables/
20 Aggregation Network (local, regional, national) METIS 5G ArchitectureAmazingly Fast scenariohigh data rates & network capacitiesUltra-Dense Networks (UDN)ISD about 10 m>= 1 radio nodes per roomLocal break out & Distributed mobile core functionsAccelerated content deliveryTech. DependentD2D, MMC (Massive Machine Comm.), Moving Networks (MN), UDN Ultra-reliable Comm. (URC)InternetMMCD2D / URCMNUDNAggregation Network (local, regional, national)Massive MIMOWireless accessWireless fronthaulWired fronthaulWired backhaulInternet accessC-RANCoMPMobile Core – Centralized Functions+ OAMC-RAN + Mobile Core – Distributed Functions (incl. optional local breakout or CDN)Macro radio node*Small cell radio node*, e.g micro, (ultra-)pico, femtoNote: Indoor cells not shown!…Centralized or distributed?* Only Remote Radio Units (RRUs) assumed.It is hard to pinpoint the detailed architecture for the society, but for sure we can identify some key trends that will influenece it:(UDN, MMC + other METIS horizontal topic short overview)Add the information that the people are expecting high performance from wireless broadband, comparable to fixed line sollutions, and that they expect it both at home, stadium and while commuting in a busA variety of solutions boosting the performance of the network already exist or are being developed (massive MIMO, CoMP etc). On the other hand the variety of use cases and high node densification will lead to a very flashy node activity pattern. In combination with the expect traffic avalanche foreseen for the next decade, solutions supporting energy efficient , scalable and flexible operations of the network infrastructure are a must.
21 Massive MIMO: CSI Error Investigation points:Example of contribution:30 Gbps simulation using 11 GHz band measured 24x24 MIMO channelPerformance analysis of massive MIMO in higher frequency bandsImpact of CSI error and hardware impairmentsTransmission scheme24x24 MIMO-OFDM eigenmodeSignal bandwidth400 MHzSubcarrier spacing195 kHzMaximum bit rate35.3 Gbps (64QAM, 3/4)Measurement Environment/Data12-element array with dual polarizationOmni-antenna (H) Antenna gain: 4 dBiTake real world aspect.Reference signal (for channel estimation) will go through the 3 sector: the main issue the interference(Enabler: optimally distribute the power to the reference signal and data signal)Sounder: based on a modelMeasure the channel (D3.2 due in March 2014)Over the air:Analysis based on real channel measurements dataInvestigation on compensation methods for hardware impairments12-element array with dual polarizationSector antenna3 dB beamwidth.Antenna gain: 15 dBi* This channel measurement was conducted in Ishigaki City in partnership with Tokyo Inst. of Tech. in Japanese national project21
22 Beyond Uplink & Downlink: two-way comm. FBSTraditionally, the design of the UL and the DL is decoupledWireless network coding allows optimization of the two-way communication instead of decouplingFBSBSFBSWork at Layer at 2: to provide the BS by different choices, 2Ways relaying, allocate the (according to the needs), best policy (interference, date rate)Red line is the fiber …There are also push in the scientist community to separate UL/DL, Control & data