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CEA-600.38
- Complete Document
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Revision / Edition: 97
Chg:
Date: 11/00/97
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POWER LINE/ RADIO FREQUENCY SYMBOL-ENCODING SUBLAYER
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Comments:
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ANSI APPROVED * ALSO SEE CEA CEBUS SET
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Superseding Document:
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Page Count:
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45
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In Stock:
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Yes
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Hardcopy Price:
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$ 85.00 |
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| Download Price: |
$ 85.00 |
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| Document Abstract |
Introduction
This document describes the portion of the Power Line or RF
Physical Layer that interfaces to the Medium Access Control (MAC)
Sublayer and to Layer System Management (LSM). This sublayer is
called the Power Line/RF Symbol Encoding (PL/RF SE) Sublayer. The
PL/RF SE Sublayer provides two primary functions:
Accepts symbol transmission requests (PH_CC_DATA.request service
primitive) from the MAC Sublayer, converts the symbols into correct
medium state change timing (spread spectrum waveforms), and
produces requests (M_STATE.request) for state changes on the
physical medium. This function is symbol encoding.
Accepts state change indications (M_STATE.indication service
primitive) from the Control Channel Medium Dependent Physical (MDP)
Sublayer, converts the time between state changes to symbols, and
produces indications of symbol reception (PH_CC_DATA.indication)
for the MAC Sublayer. This function is symbol decoding.
Figure 1-1 illustrates the lower part of the CEBus layered model
with the section described by this document shaded. Shown to the
left of each sublayer is the document number covering that
sublayer. Between the sublayers are the service primitives that
exchange information and interact with the internal state machines.
Within each sublayer block is the basic unit of information handled
by that sublayer. The bottom block represents the Control Channel
MDP Sublayer.
The next section provides a functional description of the PL/RF
SE Sublayer. Sections 3 and 4 detail the service primitives
supported by this sublayer. Section 5 provides a prose description
of the states, events, variables, and actions found in the PL/RF SE
Sublayer state machine. Section 6 presents the state transition
tables (state machine).
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