The document discusses mobility management in 4G networks. It covers heterogeneous networks, which allow connectivity across different network types. Handoff is explained, which is the process of transferring an ongoing call between channels or networks. Vertical handoff methods are classified, including fuzzy logic approaches. Fuzzy logic algorithms can manage handoffs effectively by evaluating multiple criteria. Overall challenges remain in designing vertical handoff decision algorithms that optimize parameters for diverse conditions.

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Mobility Management in 4G Networks
Bilel TLILI &
Research Master Of Science Computer 1st year
2016-2017
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1 Introduction
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1 Introduction
2 Hetregeneous Networks
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4. Content Introduction Hetregeneous Networks Handoff Conclusion and Future Work
1 Introduction
2 Hetregeneous Networks
3 Handoff
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5. Content Introduction Hetregeneous Networks Handoff Conclusion and Future Work
1 Introduction
2 Hetregeneous Networks
3 Handoff
4 Conclusion and Future Work
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Content
1 Introduction
2 Hetregeneous Networks
3 Handoff
4 Conclusion and Future Work
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Introduction
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Introduction
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Content
1 Introduction
2 Hetregeneous Networks
Hetregeneous Networks Concept
4G Networks
3 Handoff
4 Conclusion and Future Work
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What’s Hetregeneous Networks
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What’s Hetregeneous Networks
The rapid evolution of technology has resulted in the existence of an heterogeneous
environment where coverage is ensured by the coexistence of several types of networks
as:
The challenge raised by this architecture is to be able to navigate between several
networks in a transparent way .
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What’s 4G
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What’s 4G
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What 4G offers
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What 4G offers
Data Rate
Up-Link : +500 Mb/s
Down-Link : 1Gb/s
The main characteristic of 4G Network is the powerful Data Rate that offers.
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What 4G offers
Data Rate
Up-Link : +500 Mb/s
Down-Link : 1Gb/s
The main characteristic of 4G Network is the powerful Data Rate that offers.
Frequency Band
800 MHz - 2,6 GHz
A large Frequency Band allows a simultaneous numerical data’s transfer at high data rate
.
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What 4G offers
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What 4G offers
Latency
Data : 10 ms(Rtt)
Session : 50 ms
The 4G network guarantee a better interactivity by reducing the latency .
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What 4G offers
Latency
Data : 10 ms(Rtt)
Session : 50 ms
The 4G network guarantee a better interactivity by reducing the latency .
Spectral efficacity
A better Spectral efficacity : Mobile opertator can cover a larger population area with
same frequency band as 3G
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Content
1 Introduction
2 Hetregeneous Networks
3 Handoff
What’s Handover
Types of Handover
Vertical Handover methods
Fuzz Logic
4 Conclusion and Future Work
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What’s Handover
Handover
In Cellular telecommunications, the term of Handover or Handoff refer to
the process of transfering an ongoing call or data session from one channel
connected to the core network to another channel.
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Types of Handover
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Types of Handover
There are two types of Handover:
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Types of Handover
There are two types of Handover:
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Vertical Handover methods
There are several vertical Handover decision methods, in general they
can be classified under five categories:
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What’s Fuzzy Logic Algorithm
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How does it works
The handoff process can be divided into three main steps:
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How does it works
Block Diagram of Fuzzy Logic System
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Fuzzy Logic Benifits
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Fuzzy Logic Limits
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Content
1 Introduction
2 Hetregeneous Networks
3 Handoff
4 Conclusion and Future Work
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Conclusion and Future Work
A thorough study of existing VHD algorithm using fuzzy logic concept revels that, use of
fuzzy logic concepts to design a multi criteria vertical handoff decision algorithm is both
cost-effective and highly useful.
Research into vertical handover decision algorithms in heterogeneous networks is still a
challenging area. The main difficulty is to design an algorithm which is truly useful in
wide ranging conditions and utilize all the useful network parameters.
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