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Space Link Extension - Service Management - CCSDS

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DRAFT RECOMMENDED STANDARD FOR SPACE LINK EXTENSION SERVICE MANAGEMENT<br />

b) Configuration Profiles, which are used by CM and UM to define preset<br />

configurations of space link and SLE service production parameters, and sequences<br />

of events which may be used to schedule changes of configuration;<br />

c) Trajectory Predictions, each of which defines the course of the spacecraft over a<br />

period of time; and<br />

d) The <strong>Service</strong> Agreement, which covers all aspects of SLE-SM and defines the bounds<br />

for the three other information entities;<br />

2.2 OVERVIEW OF SLE MANAGEMENT SERVICES<br />

2.2.1 INTRODUCTION<br />

SLE-SM comprises a set of services for the standardized exchange of management<br />

information. Each of these management services contains sufficient information for<br />

authentication, credentials and general security concerns. The management services are:<br />

a) <strong>Service</strong> Package service (see 2.2.3);<br />

b) Configuration Profile service (see 2.2.4);<br />

c) Trajectory Prediction service (see 2.2.5); and<br />

d) <strong>Service</strong> Agreement service (see 2.2.6).<br />

In general, each management service involves procedures, operations and messages to effect<br />

negotiation and commitment of resources for the provision of space link and SLE transfer<br />

services.<br />

Each of the management services defines the operations that can be invoked by UM and the<br />

operations that can be invoked by CM, as well as the messages that are exchanged as part of<br />

each operation.<br />

2.2.2 SLE-SM RECOMMENDED STANDARD SUMMARY<br />

The information, operations, and reference framework relationships associated with the SLE-<br />

SM services are summarized in figure 2-2.<br />

Note that the names of operations that are performed upon invocation from an external entity<br />

use the imperative or present tense, while the names of notified operations (which emit a<br />

notification after the operation has been performed) use the past tense.<br />

<strong>CCSDS</strong> 910.11-R-2 Page 2-4 March 2008

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