Internet of Things Architecture

PBL #

Requirement

Type Description^ Rationale^ View^ Perspective^

Functionality

Group

Functional

Component

10 Qualitative

The number of

system errors when

processing Parking-

White-List entries

shall be less than 1 in

1000.

The occasions when information

has be sent again to the Control

Centre due to errors either in the

web service or the Control Centre

have to be kept at a minimum in

order to make buying time parking

tickets via the web an attractive

experience for the customer.

{business principle)

none

specific

Performance and

Scalability none specific^ none specific^

11 Qualitative

The user base for the

system shall not be

limited to resident

parkers and time

parkers in future

versions of the

system.

In the future new business models

are envisaged for the resident-

parking service. An example is the

inclusion of employees of

participating companies in the

resident-parking pool. By so doing,

the customer base for the Control

Centre and thus the total revenue

that can be generated with the

Control Centre can be extended.

This will increase the attractiveness

of parking services offered to, e.g.,

municipalities. (business principle)

none

specific

Evolution and

Interoperability none specific^ none specific^