Summary of WP5 Integration and Validation Second Year. FP7 ICT Objective 1.1 The Network of the Future

Transcription

1 Summary of WP5 Integration and Validation Second Year FP7 ICT Objective 1.1 The Network of the Future 1

2 Outline WP5 Outlook Testbed 1 Testbed 2 Testbed 3 Road map 2

3 WP5 Outlook Year 1 Year 2 Year 3 Testbeds Definition 12 Configuration, Implemenation, Integration Validation, Experimentation Testbed1 Testbed2 D5.1 Testbed1 Testbed2 D5.2 D5.4 Testbed3 Testbed3 D5.6 D5.3 D5.5 D5.7 WP5 builds three testbeds to validate to the three fundamental objectives of LOLA as follows: Testbed 1 validates the objective 1,2,3: EURE/TuV/MTS Testbed 2 validates the objective 2, 3: AT4/EURE Testbed 3 validates the objective 1, 3: TCS/EURE/LiU 3

4 WP5 Task and Objectives Produce three experimental real-time validation testbeds highlighting lola s fundamental objectives Task 5.2 Large-scale LTE-A emulation for M2M/Gaming Measure latency in a fully loaded dense network for M2M/gaming applications Task 5.3 Selected LTE-A PHY/MAC enhancements and endto-end validation low latency techniques will be tested against AT4W and EURE platforms Task 5.4 Validation of selected WP4 techniques on Rapidly- Deployable MESH Demonstrator Integration of low-latency transmission/relaying techniques in a multihop rapidly-deployable mesh configuration (Chorist) 4

5 Testbed 1 Large scale emulated network in the openairinterface laboratory environment Derive the traffic model (WP3) for the selected realtime M2M/gaming applications (WP2) Validate the innovations in the access stratum L1/L2 (WP4) on the emulated traffic (WP3) Emulation methodology Real-time repeatable and controlled set of experimentations for Protocol validation Performance evaluation Validating LOLA 3 Fundamental Objectives 5

6 Validation Scenario A reduced-scale indoor platform in a controlled testing environment WP3 Traffic Model: OpenArena, Autopilot WP4 Algorithm: Contention-based Random access 6

7 Experiment Design Workflow 7

8 Testbed1- HW Platform Gigabit switch to enable fast transport of the emulated data traffic Protocol stack virtualization to reside many instances in the same physical machine 64-bit 3GHz Quad-core Xeon workstation/cluster with gpu 8

9 Testbed 1 Software platform Web Portal / Interface Scenario Results OAIEMU Scenario Descriptor Console Dispatcher Result Gen Input: Description of application scenario Initialization and configuration of all the blocks Execution: PHY procedures, L2 protocols, traffic generator PHY abstraction, channel model, and mobility model Emulation medium: shared memory Output: Protocol validations and execution logs Performance evaluation metrics Channel Realization XML format Config Gen Log Gen Pkt Tracer Application Traffic Gen OAI Network Interface RB Conf. Gen. L2 Protocols Traffic Gen PHY Procedures PHY Abstraction Emulation Medium Channel Model Path Loss Channel Descriptor Channel Trace Mobility Gen EMOS 9

10 LTE Implementation in OpenAirInterface (openair4g) Open source implementation of a subset of LTE Release-8 on top of OpenAirInterface software and hardware platforms Full compliance with the LTE Radio Interface Layer 1 : (de)coding, (de)modulation and MIMO Layer 2 : Control Plane ( RRC ) and Data Plane ( PDCP / RRC /MAC ) Layer 3 : Non Access Stratum / Network Interface 10

11 OpenAirInterface Optimization Parallel Operation of the Emulator 11

12 WP3 Traffic Model OpenArena (OA) Team Fortress (TF) UL Packet size Normal (42.2;4.6) B Normal (42.2;4.6)B UL Inter-departure time Uniform (69-103ms) Uniform (31-42ms) DL Packet size LogNormal (5.039;0.47)B LogNormal (5.43;0.32)B DL Inter-departure time Uniform (41-47ms) Uniform (39-46ms) UL Packet size Auto Pilot (AP) On: Constant (1 KB) Active: Exponential (1 KB) Bicycle Race (BR) On: Constant (1 KB) Active: Exponential (8 B) UL Inter-departure time On: Uniform ( ms) Active: Exponential (5 pkt/s) On: Uniform ( ms) Active: Exponential (10 pkt/s) DL Packet size Constant (8 B) Constant (8 B) DL Inter-departure time Uniform ( ms) Uniform ( ms) 12

13 WP5 Traffic Generator 13

14 WP4 Algorithm CBA Integration UE Side enb Side 14

15 Validation Process 15

16 TESTBED 2 16

17 Testbed 2 Objectives: Complete validation system including the PHY layer Interconnection of two elements: 1. enb emulator: AT4LP (AT4 wireless LOLA Platform) 2. UE emulator: EURE platform (based on OpenAirInterface) Validate the innovations in the access stratum L1/L2 (WP4) on the emulated traffic (WP3) Validating LOLA Fundamental Objective 2 and 3 WP3 Traffic Models WP3 Traffic Models AT4LP OpenAirInterface UE WP4 Adaptations Performance Measurement Tools WP4 Adaptations 17

18 Testbed 2 enb Platform AT4LP divided into two platforms: SW platform: LTE L1, L2, L3 and upper layer protocols HW platform: RF module and signal processing module The following has been implemented: L1 and L2: according to LTE specs L3 and upper layers: minimum to ensure UE enters appropriate state TS TS TS TS TS TS Software Platform Upper layer Layer 3 Layer 2 Layer 1 NAS RRC PDCP RLC MAC PHY MIMO UP TO 2X2 TM4 Hardware Platform BaseBand Processing Module Radio Frequency Module 18

19 Testbed 2 UE Platform Testbed 2 makes use of ExpressMIMO and AgileRF platforms Rel8 Compliant SoftModem, TDD/FDD Partially-Compliant (subset) of /322/331 Layer 2 stack No NAS Analog baseband interface, 4 SMA cables for TX, 2 SMA cables for RX LMS6002D RX/TX signal MHz, 2 RF cables Express MIMO and distribution card LMS6002D RF conversion TX/RX (MIMO 4*4) LMS6002D LMS6002D RX/TX signal MHz, 2 RF cables RX/TX signal MHz, 2 RF cables RX/TX signal MHz, 2 RF cables 3 wires SPI interface to the LIMEs control 19

20 TESTBED 3 20

21 Testbed 3 Partners: EURE, TCS, LiU Rapidly-deployable mesh networks using realtime RF demonstrator Civil protection application : Video Surveillance Validate the innovations in the access stratum L1/L2 (WP4) Build upon existing ICT FP6 WIDENS and CHORIST projects Experimentally validate the fundamental objectives 1 and 3 of LOLA Latency in multi-hop networks 21

22 Hardware Platform Express MIMO I Testbed 3 makes use of ExpressMIMO and AgileRF platforms Rel8 Compliant SoftModem, TDD/FDD Partially-Compliant (subset) of /322/331 Layer 2 stack No NAS Analog baseband interface, 4 SMA cables for TX, 2 SMA cables for RX LMS6002D RX/TX signal MHz, 2 RF cables Express MIMO and distribution card LMS6002D RF conversion TX/RX (MIMO 4*4) LMS6002D LMS6002D RX/TX signal MHz, 2 RF cables RX/TX signal MHz, 2 RF cables RX/TX signal MHz, 2 RF cables 3 wires SPI interface to the LIMEs control 22

23 HW platform ExpressMIMO2 (subset of ExpressMIMO 1) MIMO 4x4 (RF FE) Front End 1 Analog RF Mother board (transceivers + BB TX/RX 1 Memory Front End 2 Front End 3 TX/RX 2 TX/RX 3 FPGA Spartan6 PC Front End 4 TX/RX 4 4x4 TDD and FDD chains Maximum BW of 28MHz Frequency range between 300 MHz to 6.5 GHz Noise Figure of 7 db and a maximum transmitted Power of +23 dbm PCI-e interface to communicate with host FFT and Turbo decoder are offloaded into FPGA and remaining signal processing is run in real-time on the host PC under the control of the real-time application interface 23

24 Testbed 3 SW platform 24

25 Demonstration Scenario optional CH 1 MR 1 Virtual cooperative link CH 2 optional MR 3 MR 2 MR 4 In the area of 1500x500m at Sophia-Antipolis Carrier frequency 1.9 GHz (other options 800MHz or 2.6 GHz) 5-6 nodes, with at least 2 cluster heads and 2 bridging mesh relays Standard video over IP traffic using TCP protocol No mobility 25

26 Hard points during Year 2 During Year 2, a delay has been accumulated of about 8 months on LOLA specific software implementation Work on hardware is not affected by the previous delay Reasons for that are: CHORIST platform can not be used as it is for implementing LOLA innovations First LOLA mesh (LTE-based mesh) specifications LOLA D4.2 (August 2011) as suggested at the 1 st year review More specific work on LOLA mesh based on the specifications has started in September

27 T5.4 Inputs / Outputs D4.2 is the current reference specifications provided by WP4 to WP5 for Testbed 3 (starting base) WP4 T5.4 OpenAirInterface simulator is in fact an input also to WP4 WP5 provides the simulation environment for HARQ studied in WP4 Topology B There is a strict coupling between simulator and implementation of Testbed 3 on the platform continuous exchanges between WP4 and WP5 WP4 T5.4 27

28 What has been done so far D4.2 specifications need to be refined in order to move to implementation: Target cooperative intercluster communications with HARQ (virtual link), implemented through MAC forwarding Detailed specifications have started and are on going Simulation environments are in place Simulator to be used in WP4 is done and available The effort was put in the simulator rather than on the deliverable Two competing cooperative HARQ strategies with virtual link (MAC forwarding) were proposed: Implementation in the simulator is done Selection of the best strategy is ongoing 28

29 Cooperative data radio bearer Data radio bearer CH1<->MRX Collaborative radio bearer #1 CH1<->MRX Collaborative radio bearer #2 CH2<->MRX IP IP IP PDCP PDCP PDCP PDCP PDCP PDCP PDCP PDCP RLC RLC RLC RLC RLC RLC RLC RLC MAC PHY MAC PHY MAC PHY CH1 MRX CH2 Data flows Collaborative logical channel 29

30 Considered cooperative HARQ Strategy Hop1 CH1 Hop2 Constrained cooperation Forward only if all MRs decode, otherwise discard block CH1 sends a new packet when all ACKs are ok or timeout Send separate BSRs, CH2 schedules tx with a CO- RNTI First decoded first sent Forward if at least one MR decodes, the other MRs continue to try decoding CH1 sends new packet when all ACKs are ok or timeout Send separate BSRs, CH2 schedules tx with a CO- RNTI or with MRs RNTI Consider UM RLC 30