Device to Device Communication Using Backup Channel in Television Whitespace

Increasing number of smart connected wireless devices and the demand of users for high data rate is increasing day by day according to the ericsson report 2020. To meet the users demand, we must increase the frequency spectr

Project Title

Device to Device Communication Using Backup Channel in Television Whitespace

Project Area of Specialization

Information & Communication Technology

Project Summary

Increasing number of smart connected wireless devices and the demand of users for high data rate is increasing day by day according to the ericsson report 2020. To meet the users demand, we must increase the frequency spectrum. More frequency spectrum will provide more channels for user to communicate with each other and will increase the data rate according to famous Shannon’s formula that, under certain conditions, the maximum theoretically achievable bit rate is directly proportional to the spectral bandwidth. So, one of the main challenges for the next generation of cellular network is to increase frequency spectrum or more efficiently using the spectrum.

Frequency spectrum can be increased either by shifting communication to higher frequencies i.e. THz, EHz etc. which tends to increase complexity of the circuitry, and will need high power for transmission which may increase living health issues related to it, or by efficiently using the available spectrum. In this work we are using the freely available television spectrum which is allocated but not locally in used known as television white space (TV-WS), to enable Device to Device (D2D) communication in the cellular network.

D2D communication provide direct communication path for two devices to communicate without the involvement of base station (BS). D2D technology will offload the BS, and by offloading the BS results in increasing the capacity of the system. Thus, more users can connect to the same BS at the same time because some of the proximity users which will be using TV spectrum for communication. In 4G D2D communication was enabled on unlicensed spectrum like Bluetooth, WiFi Direct, etc. Now in 5G D2D users can also use the licensed spectrum (cellular spectrum). The Operator (BS) has either full control on D2D communication or partial control.

In our proposed work, the caller wants to initiate a call, it will follow the traditional way but the difference is that it will sense a TVWS channel parallel with the call initiation process, by using an efficient spectrum sensing technique from cognitive radio (CR) technology. This channel can be used as a backup channel when there is no freely available channel in GSM band. If the BS has no free channel available in GSM band for the caller and the callee to communicate, then they must initiate there call on TVWS channel, the control of call will follow the traditional way (the control will be remaining with BS).

Project Objectives

1. To increase the cellular capacity of the system, by enabling direct communication between the smart phones, this will offload the base station and will increase the system capacity.

2. To decrease end-to-end latency, the path followed by direct D2D communication is for more better than the tradition path used in GSM and advanced LTE voice calls.

3. To increase data rate.

4. To enhance coverage for the users which are living at the boundaries of the cell by the telecom operators.

5. To increase signal to interference ratio (SIR) seen by the users at the boundary of the cell

Project Implementation Method

Device to Device (D2D) communication was initially implemented in cellular network by Qualcomm FlashLinQ. LTE system will totally function on the basis of System Architecture Evolution (SAE), which is core architecture of 3GPP and evolution of GPRS core network. LTE will function fully in packet domain using Internet Protocol (IP). Thus, it replaces conventional circuit switching to Mobile Switching Center (MSC). Session setup in SAE architecture is done on user’s device through session initiating management Protocol (SIP), thus paving way for D2D session setup. Thus D2D communication can be easily established between two devices.

Regarding to our project implementation, we will use MATLAB Software for simulation and will collect the results for this technology and will compare these results with already existing technologies, after that we will go toward the practical and hardware implementation such that to industrialize our project.

Benefits of the Project

1. Benefits to general public: Since, mobile phones are used by general public there demand is low end-to-end latency, high data rates with increase in the number of public users. Due to the limitation of the avaliable spectrum the increasing demand of public will increase mobile/call disconnections especially at the edges of a cell. Using the free TVWS for backup channel will minimize this problem and will not involve extra pricing for the consumers and telecommunication operators.

2. For increasing channels/ connectivity of the users, one approach is to move to higher frequencies, which may need high power for transmission. Nature including human is affected when we transmit signals with high power. Due to the high penetration power of the TV signals no need to cut or minimize the trees or avoid high building.

3. Benefits to telecom operators: As offloading of the BS will make more spectrum available for the new users, thus more users can connect to the same BS at the same time. We can say that the capacity of the BS increases.

Technical Details of Final Deliverable

We will use MATLAB Software for simulation and will collect the results for this technology and will compare these results with already existing technologies, after that we will go towards the practical and hardware implementation such that to industrialize our project.

Final Deliverable of the Project

Software System

Core Industry

Telecommunication

Other Industries

IT , Media , Security

Core Technology

Others

Other Technologies

Internet of Things (IoT)

Sustainable Development Goals

Sustainable Cities and Communities, Responsible Consumption and Production, Partnerships to achieve the Goal

Required Resources

If you need this project, please contact me on contact@adikhanofficial.com