Internet of Things

Chapter 3 Design Patterns for IoT 65

Solution

Using a distributed model where computing operations are spread across dierent environ-

ments can solve this problem. This gives benefits of heterogeneous deployment such as scalabil-

ity, more computing resources, on-demand resource enhancement, and more bandwidth. Also,

benefits of single environment deployment such as resource control, on-demand accessibility,

and closed environment setup.

Design Patterns for Infrastructure

These types of design patterns describe how various device technologies and networks can solve

physical infrastructure related problems for IoT. It also provides solutions for connectivity for

low power devices with wireless sensor networks.

WSN Access Point

Problem

In order for IoT devices to communicate with each other, they need to connect with each other

via a network. This network requires access points through which these devices can connect.

Solution

WSN stands for Wireless Sensor Network that allows various low power sensor nodes to connect

with each other. These sensors measure environmental conditions such as temperature, sound,

pollution levels, humidity, and wind. These WSN provide access points for these sensor nodes

to share data with each other.

6LoWPAN Edge Router

Problem

Many IoT deployments contain low power devices which are needed to communicate with

wireless infrastructure. This is problematic due to the power needed for devices to route IPV6

packets.

Solution

Low power devices need a dierent solution to communicate with each other. 6LoWPAN stands

for IPv6 over Low-Power Wireless Personal Area Networks. It routes IPv6 packages to lower

power networks by compressing a header.

Mesh Routing

Problem

Reliable communication among nodes and with the access point is essential for a successful IoT

deployment. If structured in a serial manner, upon failure of one of the nodes, the entire com-

munication may fail. Also, in another case, if structured in some other manner which requires

a particular node to connect with a particular node, then again failing on the dependent node

may cause in reliable communication.

Solution

This problem can be solved by creating a mesh structure so nodes are not dependent on a

particular node in the chain. Mesh structure provides connectivity in a direct, dynamic and

non-hierarchical manner. This type of structure oers reliability in data sharing as even if

Internet_of_Things_CH03_pp055-080.indd 65 9/3/2019 10:13:07 AM