Internet DRAFT - draft-rogge-manet-dlep-radio-band
draft-rogge-manet-dlep-radio-band
Manet H.R. Rogge
Internet-Draft Fraunhofer FKIE
Intended status: Standards Track 23 July 2023
Expires: 24 January 2024
DLEP Radio Band Extension
draft-rogge-manet-dlep-radio-band-04
Abstract
This document defines an extension to the Dynamic Link Exchange
Protocol (DLEP) to provide the frequency bands used by the radio.
Status of This Memo
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This Internet-Draft will expire on 24 January 2024.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 2
2. Extension Usage and Identification . . . . . . . . . . . . . 2
3. Radio Band Data Item . . . . . . . . . . . . . . . . . . . . 2
4. Security Considerations . . . . . . . . . . . . . . . . . . . 4
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4
5.1. Extension Type Value . . . . . . . . . . . . . . . . . . 4
5.2. Data Item Value . . . . . . . . . . . . . . . . . . . . . 5
6. Normative References . . . . . . . . . . . . . . . . . . . . 5
7. Informative References . . . . . . . . . . . . . . . . . . . 5
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 5
1. Introduction
The dynamic Link Exchange Protocol (DLEP) is defined in [RFC8175].
It provides the exchange of link-related control information between
DLEP peers. DLEP peers are comprised of a modem and a router. DLEP
defines a base set of mechanisms as well as support for possible
extensions. This document defines one such extension.
1.1. Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
2. Extension Usage and Identification
The use of the Radio Band Extension SHOULD be configurable. To
indicate that the Radio Band Extension is to be used, an
implementation MUST include the Radio Band Extension Type Value in
the Extensions Supported Data Item. The Extensions Supported Data
Item is sent and processed according to [RFC8175].
The Radio Band Extension Type Value is TBD; see Section TBD.
3. Radio Band Data Item
Radio Band Data Item contains information which radio frequency
resources are being used. These values are usually interface
specific and static during the DLEP session.
The Radio Band Data Item can be used multiple times to represent
multiple radio bands.
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The Item can be used in a neighbor specific message if the radio use
dedicated subcarriers to talk to neighbors.
Frequency selection is often controlled by the radios configuration.
By giving the radio a standardized way to transmit its selected
frequency configuration the router can aggregate multiple radios
settings into a common information page, can do some basic checking
for configuration mistakes by comparing known radio group
configuration with their frequency by radio (if the routers have a
second communication channel) or forward the data to an upper layer
for visualization.
The information in this Item gives the router an easy way to
calculate the spectral efficiency of a radio link, how much bandwidth
is used for the current data-rate reported by DLEP. This can be
integrated into the routing metric to focus traffic on links that use
the spectrum efficiently.
The Item can also be used as an interface to a cognitive radio
controller on the router, analyzing the correlation of transmission
disruptions with the frequency bands and could (together with the
Request Link Characteristics message) be used to change the frequency
of the radio in a standardized way.
The format of the Radio Band Data Item is:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Data Item Type | Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Carrier Frequency |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Carrier Frequency |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Bandwidth |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Bandwidth |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Flags |
+-+-+-+-+-+-+-+-+
Figure 1
Data Item Type: TBD
Length: 17
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Center Frequency: The center frequency of the band in Hz.
Bandwidth: The bandwidth of the band in Hz.
Flags: Flags field as defined below.
The Flags field is defined as:
0 1 2 3 4 5 6 7
+-+-+-+-+-+-+-+-+
| Reserved |U|D|
+-+-+-+-+-+-+-+-+
Figure 2
U: Uplink Flag, indicating the band is used for transmitting data.
D: Downlink Flag, indicating the band is used for receiving data.
Reserved: MUST be zero. Left for future assignment.
4. Security Considerations
The extension introduces a new Data Item for DLEP. The extension
does not inherently introduce any additional vulnerabilities above
those documented in [RFC8175]. The approach taken to security in
that document applies equally when running the extension defined in
this document.
5. IANA Considerations
As described below, IANA has assigned two values per this document.
Both assignments are to registries defined by [RFC8175].
5.1. Extension Type Value
IANA has assigned the following value in the "Extension Type Values"
registry within the "Dynamic Link Exchange Protocol (DLEP)
Parameters" registry. The new value is in the range with the
"Specification Required" [RFC8126] policy:
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+------+-------------+
| Code | Description |
+------+-------------+
| TBD | Radio Band |
+------+-------------+
Table 1: New Extension
Type Value
5.2. Data Item Value
IANA has assigned the following value in the "Data Item Type Values"
registry within the "Dynamic Link Exchange Protocol (DLEP)
Parameters" registry. The new value is in the range with the
"Specification Required" [RFC8126] policy:
+-----------+-------------+
| Type Code | Description |
+-----------+-------------+
| TBD | Radio Band |
+-----------+-------------+
Table 2: New Data Item
Value
6. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997,
<https://www.rfc-editor.org/info/rfc2119>.
[RFC8175] Ratliff, S., Jury, S., Satterwhite, D., Taylor, R., and B.
Berry, "Dynamic Link Exchange Protocol (DLEP)", RFC 8175,
DOI 10.17487/RFC8175, June 2017,
<https://www.rfc-editor.org/info/rfc8175>.
7. Informative References
[RFC8126] Cotton, M., Leiba, B., and T. Narten, "Guidelines for
Writing an IANA Considerations Section in RFCs", BCP 26,
RFC 8126, DOI 10.17487/RFC8126, June 2017,
<https://www.rfc-editor.org/info/rfc8126>.
Author's Address
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Henning Rogge
Fraunhofer FKIE
Fraunhofer Strasse 20
53343 Wachtberg
Germany
Email: henning.rogge@fkie.fraunhofer.de
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