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Mobile Ad-Hoc n/w
A quick/short idea

google.me/+SendilKumar
Its about small cells !!
● Next generation deployment exploit the idea of idea of
small cells, low power and bit of ad-hoc coverage 
● Enablers are the broadband back-haul and the ALL-IP design
of cellular networks (LTE & WIMAX)
● One of primary concern to use MOBILE as a small BASESTATION to relay in FDD is the difference in the
uplink/downlink frequency
● Mobile's RF front-end is designed to receive and transmit at
a certain bands 
● Mobile Adhoc network had been a popular research area
around 2000
● Around April2008, heard about this company http://www.
terranet.se/ demonstrating a peer 2 peer call !!
What now ?
New hand-held terminals have become more smart 
● Processor speeds with 1GHz available now
● Supports MIMO capabilities (Form factor)
● Much better operating systems (unix) comparable with
PC functionalities
● TDD version of LTE & WIMAX available
○ Leading to single RF frontend
○ Tx-Rx is software controlled switch !!
● Relays - which used to be a research topic is now widely
accepted  and supported in 4G standards
● Typically a TDD frame is divided into multiple slots and the
n/w configures the DL:UL proportion (DL - slots for
downlink, UL:slots for uplink)
Converting mobile terminal to relay
Why not convert the 4G mobiles part of mesh network ?
● Capability of terminal to function as a relay or a
data originator
● Could be transparent to n/w or by requesting grant from
n/w to transmit in the downlink duration of macro
● Challenges : Minimize interference to macro connected
terminals when transmitting in a downlink slot 
● Possible solution : 
○ Macro allows certain downlink slots for allowing p2p
communications. 
○ Exploit spatial diversity
Opening up posibilities
● Any UE can behave as small streaming server 
● Enable p2p communication
● Provide emergency services 
○ Macro coverage is limited by providing multi-hop links
○ Extend data to adjacent sector macro when a sector is
fully loaded
● Sharing wired or wifi based backhaul between a small user
groups 
● Social networking kind of applications 
○ Broadcast route/direction request to UE within a small
region 
○ Foursquare kind of apps can now locally !! 
Comments
Share your thoughts with me...
The slides put up here are a very top-level thoughts on mesh
network within mobiles 

Communicate on the first slide.. 

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Mobile adhoc n_w

  • 1. Mobile Ad-Hoc n/w A quick/short idea google.me/+SendilKumar
  • 2. Its about small cells !! ● Next generation deployment exploit the idea of idea of small cells, low power and bit of ad-hoc coverage  ● Enablers are the broadband back-haul and the ALL-IP design of cellular networks (LTE & WIMAX) ● One of primary concern to use MOBILE as a small BASESTATION to relay in FDD is the difference in the uplink/downlink frequency ● Mobile's RF front-end is designed to receive and transmit at a certain bands  ● Mobile Adhoc network had been a popular research area around 2000 ● Around April2008, heard about this company http://www. terranet.se/ demonstrating a peer 2 peer call !!
  • 3. What now ? New hand-held terminals have become more smart  ● Processor speeds with 1GHz available now ● Supports MIMO capabilities (Form factor) ● Much better operating systems (unix) comparable with PC functionalities ● TDD version of LTE & WIMAX available ○ Leading to single RF frontend ○ Tx-Rx is software controlled switch !! ● Relays - which used to be a research topic is now widely accepted  and supported in 4G standards ● Typically a TDD frame is divided into multiple slots and the n/w configures the DL:UL proportion (DL - slots for downlink, UL:slots for uplink)
  • 4. Converting mobile terminal to relay Why not convert the 4G mobiles part of mesh network ? ● Capability of terminal to function as a relay or a data originator ● Could be transparent to n/w or by requesting grant from n/w to transmit in the downlink duration of macro ● Challenges : Minimize interference to macro connected terminals when transmitting in a downlink slot  ● Possible solution :  ○ Macro allows certain downlink slots for allowing p2p communications.  ○ Exploit spatial diversity
  • 5. Opening up posibilities ● Any UE can behave as small streaming server  ● Enable p2p communication ● Provide emergency services  ○ Macro coverage is limited by providing multi-hop links ○ Extend data to adjacent sector macro when a sector is fully loaded ● Sharing wired or wifi based backhaul between a small user groups  ● Social networking kind of applications  ○ Broadcast route/direction request to UE within a small region  ○ Foursquare kind of apps can now locally !! 
  • 6. Comments Share your thoughts with me... The slides put up here are a very top-level thoughts on mesh network within mobiles  Communicate on the first slide..