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1 WM Lab, Tongji Univ. Performance Evaluation Methodology & Key Technologies of New Generation Broadband Wireless Access Networking.

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Presentation on theme: "1 WM Lab, Tongji Univ. Performance Evaluation Methodology & Key Technologies of New Generation Broadband Wireless Access Networking."— Presentation transcript:

1 1 WM Lab, Tongji Univ. Performance Evaluation Methodology & Key Technologies of New Generation Broadband Wireless Access Networking Zhiwei Gao Broadband Wireless Communication and Multimedia Institute School of Electronics and Information Engineering Tongji University

2 2 WM Lab, Tongji Univ. Future Wireless Broadband Test Environment Parameters of Future Wireless Broadband Wireless Access Sketch Maps Platform of Wireless Access Scenarios Simulation of Relay & Distributed Networks Approach to Real World Test Methodology Simulation Platform Associated Application Traffic Test Combination with Wireless Test Hardware What Can We Test

3 3 WM Lab, Tongji Univ. Future Wireless Broadband Test Environment Parameters of Future Wireless Broadband Wireless Access Sketch Maps Platform of Wireless Access Scenarios Simulation of Relay & Distributed Networks Approach to Real World Test Methodology Simulation Platform Associated Application Traffic Test Combination with Wireless Test Hardware What Can We Test

4 4 WM Lab, Tongji Univ. Framework of Tongji 4G-Test Research

5 5 WM Lab, Tongji Univ. Future Wireless Broadband Test Environment Platform Parameters ParameterValue Carrier frequency2.4 GHz GHz Channel bandwidth2x50 MHz Number of cells7 (center evaluated) Users per cell10 (3 One-Hop, 7 2-Hop) Inter-site deployment800m, 1000m, 1200m Distance BS – RN45% of distance BS-BS Traffic load1-54 MBit/s type of antennasomni RN /UT number of antenna1 2 4(MIMO) BS transmission power46 dBm RN transmission power37 dBm UT transmission power24 dBm Traffic modelFull buffer RetransmissionsYes MobilityYes Resource schedulingExhaustive Round Robin (ERR) Multi-Access MethodOFDMA IP NetworksFull IP The parameters used in the simulations of the baseline deployment in wide area test case are illustrated. The NLOS channel model was used for BS- RN links and NLOS for RN-MS links. We designed HARQ for packet retransmissions due to errors. We have assumed all the network nodes are IP-based. Users are considered to have mobility from BS to BS with mip. Tongji BWA Lab

6 6 WM Lab, Tongji Univ. Wireless Access Sketch Maps Future Wireless Broadband Test Environment Distributed Access 1. Transmission Diversity and Receiver Diversity 2. Smart Antenna and two-dimensional space-time signal processing technology 3. "Virtual cell" technology 4. Distributed receiving station Relay Access: 1. Frame Structure. 2. Cooperation and Macro-diversity between Relay Stations. 3. Wireless Resource Management. 4. Spectrum Allocation Technology. 5. Design of ARQ/HARQ. 6. Signal Processing mode of Relay Station.

7 7 WM Lab, Tongji Univ. Future Wireless Broadband Test Environment Parameters of Future Wireless Broadband Wireless Access Sketch Maps Platform of Wireless Access Scenarios Simulation of Relay & Distributed Networks Approach to Real World Test Methodology Simulation Platform Associated Application Traffic Test Combination with Wireless Test Hardware What Can We Test

8 8 WM Lab, Tongji Univ. Broadband Wireless Access Simulation Platform Simulation of Relay & Distributed Networks In this system, mobile station which is around base station can access base station as one hop, otherwise, mobile station which is far from base station can access base station through multi-hops. Distributed Access and signal processing are one of methods to enhance communication system capacity and spectrum efficiency of next generation wireless communication.

9 9 WM Lab, Tongji Univ. Approaching to Real World Introducing relief map contour line and modified propagation model when designing scenarios. Eventually come up with an approaching to real world simulation platform. Platform of Wireless Access Scenarios

10 10 WM Lab, Tongji Univ. Future Wireless Broadband Test Environment Parameters of Future Wireless Broadband Wireless Access Sketch Maps Platform of Wireless Access Scenarios Simulation of Relay & Distributed Networks Approach to Real World Test Methodology Simulation Platform Associated Application Traffic Test Combination with Wireless Test Hardware What Can We Test

11 11 WM Lab, Tongji Univ. Test Methodology Simulation Platform Associated Application Traffic Test

12 12 WM Lab, Tongji Univ. Test Methodology Simulation Platform Associated Application Traffic Test Playing in local media server(Left) Playing in the receiver node with packet loss and delay(Right) From OPNET

13 13 WM Lab, Tongji Univ. Test Methodology Combination with Wireless Test Hardware Cooperated with hardware test devices, using the modified propagation model and real data collected by test hardware.

14 14 WM Lab, Tongji Univ. Future Wireless Broadband Test Environment Parameters of Future Wireless Broadband Wireless Access Sketch Maps Platform of Wireless Access Scenarios Simulation of Relay & Distributed Networks Approach to Real World Test Methodology Simulation Platform Associated Application Traffic Test Combination with Wireless Test Hardware What Can We Test

15 15 WM Lab, Tongji Univ. Coverage Capacity Mobility Qos What Can We Test

16 16 WM Lab, Tongji Univ. Coverage Test Objective Validate network planning, and find the blind spot and the empty area of network coverage. Compare the coverage of the different service channel to verify the theoretical results. Through the test results of the same type of service in different wireless communication environment, verify the impact of the various parameters in the link budget.

17 17 WM Lab, Tongji Univ. Objective In the actual environment, verifying if the number of largest access users can reach or close to theoretical value. Test environment includes static and dynamic situations. In the test, every test should use the number of the largest users which meet QoS requirements as the determining principle of cell capacity. Capacity Test

18 18 WM Lab, Tongji Univ. content Capacity test can be considered as throughput test. It includes throughput test of Single-user area and Multi- user area, and can be both mobile and fixed-point test. –a single-user movement test does research on MS loading operations when moving from BS to marginal areas(Speed:20- 40km/h). (radial-forward extrusion coverage) –Multi-user movement test does research on MS in the near, medium and far distance, with the speed of movement along the loop. (loop coverage) Test environment can be divided into work and load conditions in single area and the adjacent areas. –Plot test of Single-user and multi-user area in the adjacent areas are 50 per cent of the loading conditions in near, medium, far plot under C / I identify. (Near: 10 dB +; medium :5-10 dB; far :0-5 dB.) Capacity Test

19 19 WM Lab, Tongji Univ. All IP Based Network; Mobile IP Technology; Multi-Cell Handover; In a Heterogeneous Network(Next Step). Mobility Test

20 20 WM Lab, Tongji Univ. QoS test depends on the service types of different networks. KPI (Key Performance Indicators) of QoS test include throughput, delay, jitter, BER/FER, etc. Qos Test

21 21 WM Lab, Tongji Univ. Network Performance Evaluation Qos Mobility Coverage Capacity Network PlanningService Planning Performance Report

22 22 WM Lab, Tongji Univ.


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