4G and 5G: Present and Future of Mobile Network Shariful Islam Std#1014052010

Define a generation a change in the fundamental nature of the service 9/17/2018 Define a generation a change in the fundamental nature of the service non-backwards-compatible transmission technology higher peak bit rates new frequency bands wider channel frequency bandwidth in Hertz higher capacity for many simultaneous data transfers Shariful Islam 9/17/2018

Define a generation Shariful Islam 9/17/2018

9/17/2018 IMT-Advanced Shariful Islam 9/17/2018

IMT-Advanced Shariful Islam 9/17/2018

4G No circuit switching. Only packet switching. Stablished standards LTE Advanced WirelessMAN-Advanced Close contender with commercial 4G tag. Long Term Evolution Mobile WiMAX Shariful Islam 9/17/2018

4g Physical layer transmission techniques are MIMO, OFDMA, Turbo principle error-correcting codes. Channel-dependent scheduling: To use the time- varying channel Link adaptation: Adaptive modulation and error- correcting codes Mobile IP utilized for mobility IP-based femtocells home nodes connected to fixed Internet broadband infrastructure Shariful Islam 9/17/2018

Femtocell Shariful Islam 9/17/2018

LTE Advanced 100 Mbit/s in the downlink 50 Mbit/s in the uplink 20 MHz channel MIMO increases its capability High Speed OFDM Packet Access Shariful Islam 9/17/2018

LTE Advanced Scalable system bandwidth exceeding 20 MHz, up to 100 MHz Local area optimization of air interface Local Area network and mobility solutions Enhanced precoding and forward error correction UL/DL inter eNB coordinated MIMO heterogeneous networks with a mix of macrocells with low power nodes such as picocells, femtocells and new relay nodes. Shariful Islam 9/17/2018

LTE Advanced Shariful Islam 9/17/2018

MiMo a method for multiplying the capacity of a radio link using multiple transmit and receive antennas to exploit multipath propagation. a practical technique for sending and receiving more than one data signal on the same radio channel at the same time via multipath propagation. a transmitter sends multiple streams by multiple transmit antennas. The transmit streams go through a matrix channel Shariful Islam 9/17/2018

OFDM a method of encoding digital data on multiple carrier frequencies. a frequency-division multiplexing (FDM) scheme used as a digital multi-carrier modulation method. Shariful Islam 9/17/2018

OFDM advantages disadvantages Robust against intersymbol interference (ISI) and fading caused by multipath propagation. Efficient implementation using Fast Fourier Transform (FFT). Low sensitivity to time synchronization errors. Sensitive to Doppler shift. High peak-to-average-power ratio (PAPR), requiring linear transmitter circuitry, which suffers from poor power efficiency. Loss of efficiency caused by cyclic prefix/guard interval. Shariful Islam 9/17/2018

WiMAX Also called IEEE 802.16 a series of wireless broadband standards written by IEEE. supporting channel bandwidths of between 1.25 MHz and 20 MHz, with up to 2048 subcarriers. Provides MIMO support A key feature of 802.16 is that it is a connection-oriented technology. The subscriber station (SS) cannot transmit data until it has been allocated a channel by the base station (BS). This allows 802.16e to provide strong support for quality of service (QoS). In 802.16e, there are 5 QoS classes: Shariful Islam 9/17/2018

WiMAX Service Abbrev Definition Typical Applications Unsolicited Grant Service UGS Real-time data streams comprising fixed-size data packets issued at periodic intervals T1/E1 transport Extended Real-time Polling Service ertPS Real-time service flows that generate variable-sized data packets on a periodic basis VoIP Real-time Polling Service rtPS Real-time data streams comprising variable-sized data packets that are issued at periodic intervals MPEG Video Non-real-time Polling Service nrtPS Delay-tolerant data streams comprising variable-sized data packets for which a minimum data rate is required FTP with guaranteed minimum throughput Best Effort BE Data streams for which no minimum service level is required and therefore may be handled on a space-available basis HTTP Shariful Islam 9/17/2018

WiMAX Shariful Islam 9/17/2018

4g architecture Shariful Islam 9/17/2018

Beyond 4G research 4G systems is to make the high bit rates available in a larger portion of the cell, especially to users in an exposed position in between several base stations. Pervasive networks are an amorphous and at present entirely hypothetical concept where the user can be simultaneously connected to several wireless access technologies and can seamlessly move between them efficiently manage spectrum use and transmission power as well as the use of mesh routing protocols to create a pervasive network. Shariful Islam 9/17/2018

5g Shariful Islam 9/17/2018

Next Generation Mobile Networks Data rates of several tens of megabits per second should be supported for tens of thousands of users 1 gigabit per second to be offered simultaneously to many workers on the same office floor Several hundreds of thousands of simultaneous connections to be supported for massive sensor deployments Spectral efficiency should be significantly enhanced compared to 4G Coverage should be improved Signaling efficiency should be enhanced Latency should be reduced significantly compared to LTE Shariful Islam 9/17/2018

Shariful Islam 9/17/2018

Debate about 5g A super-efficient mobile network that delivers a better performing network for lower investment cost. A super-fast mobile network comprising the next generation of small cells densely clustered to give a contiguous coverage over at least urban areas A converged fiber-wireless network It would be more a “nomadic” service (like Wi-Fi) rather than a wide-area “mobile” service. Shariful Islam 9/17/2018

research Radio propagation measurements and channel models Massive Distributed MIMO providing green flexible small cells Advanced interference and mobility management Efficient support of machine-type devices to enable the Internet of Things Multiple-hop networks: A major issue in systems beyond 4G is to make the high bit rates available in a larger portion of the cell Shariful Islam 9/17/2018

research Wireless network virtualization: network infrastructure can be decoupled from the services that it provides Cognitive radio technology, also known as smart radio Dynamic Adhoc Wireless Networks IPv6, where a visiting care-of mobile IP address is assigned according to location and connected network Shariful Islam 9/17/2018

Research Wearable devices with AI capabilities Li-Fi is a massive MIMO visible light communication network to advance 5G Worldwide wireless web (WWWW), i.e. comprehensive wireless-based web applications Shariful Islam 9/17/2018

Shariful Islam 9/17/2018