WN - 2.05

Question 1

MTC stands for Machine-Type Communcation. What is Massic MTC

Answer 1

Monitoring and automation of buildings and infastructure

Question 2

What are the requirements of MTC

Answer 2

1. Architecturally simple devices that use a low-complexity transmission mode
2. run on battery power for many years
3. Long transmission ranges
4. Scalable networks

Question 3

What is a capillary network

Answer 3

Mobile network may be used to bridge connectivity to the device by means of capillary networks.

Question 4

What is critical IoT

Answer 4

1. Applications such as control, of traffic, wireless connectivity for industrial processes
2. industries that benefit -> automotive, Industrie 4.0 and energy utilies
3. Require high reliability and availability in terms of wireless connectivity
4. communication, monitoring and control occur in real-time

Question 5

How do you address latency objectives for 5G

Answer 5

Have points of presence for data storage/computation much closer to where the control is required.

Question 6

Network slicing allows a network being able to handle as any different applications as possible, by means of the same basic wireless-access tech and within the same spectrum. What does this allow?

Answer 6

Avoid spectrum fragmentation

Question 7

What is reduced signaling?

Answer 7

Decrease the amount of times the devices message/interact with each other

Question 8

What are the requirements of Low Power Wide Area Networks

Answer 8

1. Supports small messages with specific duty cycles
2. Supports low power end nodes and hence long battery life
3. Supports creation of public networks

Question 9

What is the aim of LPWAN

Answer 9

Supports a vast number of cheap devices that transmit bursty, small, infrequent messages

Question 10

Which band does LoRa operate?

Answer 10

Operates in the 868 MHz band which gives favourable propagation characteristics to travel long distances by LOS or penetrate non-LOS situations

Question 11

Does LoRa operate in licensed or unlicensed spectrum?

What it the impact of this?

Answer 11

Unlicensed

Innovation but has uncertain QoS

Question 12

What is LoRa at a glance

Answer 12

1. 868 MHz technology
2. Spread spectrum based (v robust to noise)
3. 250 bps to 50 kbps
4. Up to 154 dB link budget -> able to penetrate deep
5. Battery based end-devices

Question 13

Low Power Wide Area Networks (LPWAN) is:
❑ A technology that supports small messages
with specific duty cycles
❑ A technology that supports high power end
nodes and hence long battery life
❑ A technology that is suited to accessing
sensors over a short range

Answer 13

A technology that supports small messages
with specific duty cycles