Page 245 - Cloud computing: From paradigm to operation

Framework and requirements for cloud computing 1

6.4.3 Service considerations of distributed cloud

Services in a distributed cloud have various types based on the resource capacity of core, regional and edge
clouds and on the CSC's demands. Thus, service considerations are as follows:
– the scale of a cloud service for deploying cloud services in different-scale edge, regional and core
clouds; and
– automatic cloud service delivery for supporting the mobility of CSC’s rapidly.

6.4.4 Management considerations of distributed cloud
Management in a distributed cloud has a global view and a local view of operations, and administration for
distributed cloud resources and services. Thus, management considerations are as follows:
– global management of both distributed cloud resources and cloud services for interworking among
core, regional and edge clouds; and
– provisioning, operation and administration of distributed cloud resources and cloud services.
6.4.5 Security considerations of distributed cloud

Security in a distributed cloud has adaptive security control for core, regional and edge clouds. Thus, security
considerations are as follows:
– identification and authentication of CSCs using multiple distributed cloud infrastructures at any
distributed cloud;
– different scales of security functions, such as availability and data integrity, based on the resource
capacity of core, regional and edge clouds; and
– different security suites for confidentiality, policy and key management appropriate to
heterogeneous distributed cloud resources.

7 High-level requirements for distributed cloud

7.1 Infrastructure requirements for distributed cloud
– high scalability: It is required that a distributed cloud provide distributed cloud resources with scale-
out to edge, regional and core clouds to satisfy a large number of demands for cloud services;
– high reliability: It is required that a distributed cloud provide redundant deployment of cloud
services among edge, regional and core clouds against catastrophic events;
– low power consumption: It is required that a distributed cloud provide energy-efficient distributed
cloud resources for low power consumption at an edge cloud in order to save power of the edge
cloud;
– adaptive resource composition: It is recommended that a distributed cloud provide adaptive
resource composition of the distributed cloud among edge, regional and core clouds;
NOTE 1 – Adaptive resource composition refers to preparation of distributed cloud resources appropriately to
support changes of a CSC's condition, such as environmental changes by the CSC's mobility.
– automatic infrastructure provision: It is recommended that a distributed cloud provide automatic
setup of infrastructure, including hardware initiation, network configuration and software
installation;
– heterogeneous devices access: It is recommended that a distributed cloud provide heterogeneous
access mechanisms for end devices to enrich cloud services.
NOTE 2 – Examples of heterogeneous access mechanisms are Wi-Fi, Bluetooth, wireless sensor network (WSN)
and radio access network (RAN).

7.2 Network requirements for distributed cloud
– low latency: It is required that a distributed cloud provide network resources to support low latency
for cloud services in edge clouds;
NOTE 1 – Examples of network resources are access point, switch, router and gateway.

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