< draft-ietf-6tisch-terminology-04.txt		draft-ietf-6tisch-terminology-05.txt >
	6TiSCH MR. Palattella, Ed.		6TiSCH MR. Palattella, Ed.
	Internet-Draft SnT/Univ. of Luxembourg		Internet-Draft SnT/Univ. of Luxembourg
	Intended status: Informational P. Thubert		Intended status: Informational P. Thubert
	Expires: September 24, 2015 cisco		Expires: January 7, 2016 cisco
	T. Watteyne		T. Watteyne
	Linear Technology / Dust Networks		Linear Technology / Dust Networks
	Q. Wang		Q. Wang
	Univ. of Sci. and Tech. Beijing		Univ. of Sci. and Tech. Beijing
	March 23, 2015		July 6, 2015
	Terminology in IPv6 over the TSCH mode of IEEE 802.15.4e		Terminology in IPv6 over the TSCH mode of IEEE 802.15.4e
	draft-ietf-6tisch-terminology-04		draft-ietf-6tisch-terminology-05
	Abstract		Abstract
	6TiSCH proposes an architecture for an IPv6 multi-link subnet that is		6TiSCH proposes an architecture for an IPv6 multi-link subnet that is
	composed of a high speed powered backbone and a number of		composed of a high speed powered backbone and a number of
	IEEE802.15.4e TSCH wireless networks attached and synchronized by		IEEE802.15.4e TSCH wireless networks attached and synchronized by
	backbone routers. This document extends existing terminology		backbone routers. This document extends existing terminology
	documents available for Low-power and Lossy Networks to provide		documents available for Low-power and Lossy Networks to provide
	additional terminology elements.		additional terminology elements.
	skipping to change at page 1, line 47 ¶		skipping to change at page 1, line 47 ¶
	Internet-Drafts are working documents of the Internet Engineering		Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF). Note that other groups may also distribute		Task Force (IETF). Note that other groups may also distribute
	working documents as Internet-Drafts. The list of current Internet-		working documents as Internet-Drafts. The list of current Internet-
	Drafts is at http://datatracker.ietf.org/drafts/current/.		Drafts is at http://datatracker.ietf.org/drafts/current/.
	Internet-Drafts are draft documents valid for a maximum of six months		Internet-Drafts are draft documents valid for a maximum of six months
	and may be updated, replaced, or obsoleted by other documents at any		and may be updated, replaced, or obsoleted by other documents at any
	time. It is inappropriate to use Internet-Drafts as reference		time. It is inappropriate to use Internet-Drafts as reference
	material or to cite them other than as "work in progress."		material or to cite them other than as "work in progress."
	This Internet-Draft will expire on September 24, 2015.		This Internet-Draft will expire on January 7, 2016.
	Copyright Notice		Copyright Notice
	Copyright (c) 2015 IETF Trust and the persons identified as the		Copyright (c) 2015 IETF Trust and the persons identified as the
	document authors. All rights reserved.		document authors. All rights reserved.
	This document is subject to BCP 78 and the IETF Trust's Legal		This document is subject to BCP 78 and the IETF Trust's Legal
	Provisions Relating to IETF Documents		Provisions Relating to IETF Documents
	(http://trustee.ietf.org/license-info) in effect on the date of		(http://trustee.ietf.org/license-info) in effect on the date of
	publication of this document. Please review these documents		publication of this document. Please review these documents
	carefully, as they describe your rights and restrictions with respect		carefully, as they describe your rights and restrictions with respect
	to this document. Code Components extracted from this document must		to this document. Code Components extracted from this document must
	include Simplified BSD License text as described in Section 4.e of		include Simplified BSD License text as described in Section 4.e of
	the Trust Legal Provisions and are provided without warranty as		the Trust Legal Provisions and are provided without warranty as
	described in the Simplified BSD License.		described in the Simplified BSD License.
	Table of Contents		Table of Contents
	1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2		1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
	2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3		2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 2
	3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10		3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
	4. Security Considerations . . . . . . . . . . . . . . . . . . . 10		4. Security Considerations . . . . . . . . . . . . . . . . . . . 10
	5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 10		5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 10
	6. References . . . . . . . . . . . . . . . . . . . . . . . . . 10		6. References . . . . . . . . . . . . . . . . . . . . . . . . . 10
	6.1. Normative References . . . . . . . . . . . . . . . . . . 10		6.1. Normative References . . . . . . . . . . . . . . . . . . 10
	6.2. Informative References . . . . . . . . . . . . . . . . . 11		6.2. Informative References . . . . . . . . . . . . . . . . . 11
	6.3. External Informative References . . . . . . . . . . . . . 12		6.3. External Informative References . . . . . . . . . . . . . 12
	Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 12		Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 12
	1. Introduction		1. Introduction
	A new breed of Time Sensitive Networks is being developed to enable
	traffic that is highly sensitive to jitter and quite sensitive to
	latency. Such traffic is not limited to voice and video, but also
	includes command and control operations such as in industrial
	automation or in-vehicle sensors and actuators.
	The IEEE802.15.4 Medium Access Control (MAC) has evolved with		The IEEE802.15.4 Medium Access Control (MAC) has evolved with
	IEEE802.15.4e which provides in particular the Time Slotted Channel		IEEE802.15.4e which provides in particular the Time Slotted Channel
	Hopping (TSCH) mode for industrial-type applications. It provides		Hopping (TSCH) mode for industrial-type applications. It provides
	deterministic capabilities to the point that a packet that pertains		deterministic capabilities to the point that a packet that pertains
	to a certain flow crosses the network from node to node following a		to a certain flow crosses the network from node to node following a
	very precise schedule, like a train leaves intermediate stations at		very precise schedule, like a train leaves intermediate stations at
	precise times along its path.		precise times along its path.
	This document provides additional terminology elements to cover terms		This document provides additional terminology elements to cover terms
	that are new to the context of TSCH wireless networks and other		that are new to the context of TSCH wireless networks and other
	skipping to change at page 3, line 18 ¶		skipping to change at page 3, line 12 ¶
	6550 [RFC6550] and RFC 6552 [RFC6552], which are all included here by		6550 [RFC6550] and RFC 6552 [RFC6552], which are all included here by
	reference.		reference.
	The draft does not reuse terms from IEEE802.15.4e such as "path" or		The draft does not reuse terms from IEEE802.15.4e such as "path" or
	"link" which bear a meaning that is quite different from classical		"link" which bear a meaning that is quite different from classical
	IETF parlance.		IETF parlance.
	This document adds the following terms:		This document adds the following terms:
	6TiSCH: IPv6 over the Timeslotted Channel Hopping (TSCH) mode of		6TiSCH: IPv6 over the Timeslotted Channel Hopping (TSCH) mode of
	IEEE 802.15.4e. It defines the 6top sublayer and a set		IEEE802.15.4e. It defines (i)the 6top sublayer; (ii) a
	of protocols (in particular, for setting up a TSCH		set of protocols for setting up a TSCH schedule with a
	schedule with a centralized or distributed approach,		centralized and/or distributed approach, for managing the
	managing the resource allocation), as well as the		allocation of resources; and (iii) the architecture to
	architecture to bind them together, for use in IPv6 TSCH		bind them together, for use in IPv6 TSCH based networks.
	based networks.
	6F: IPv6 Forwarding. One of the three forwarding models		6F: IPv6 Forwarding. One of the three forwarding models
	supported by 6TiSCH. Packets are routed at layer 3,		supported by 6TiSCH. Packets are routed at layer 3,
	where Quality of Service (QoS) and Active Queue		where Quality of Service (QoS) and Active Queue
	Management (e.g., Random Early Detection, RED, [RFC2309])		Management (e.g., Random Early Detection, RED, [RFC2309])
	operations are expected to prioritize flows with		operations are expected to prioritize flows with
	differentiated services.		differentiated services.
	6top: 6top is the adaptation sublayer between TSCH and upper		6top: 6top is the adaptation sublayer between TSCH and upper
	layers like IPv6 over Low-Power Wireless Personal Area		layers like IPv6 over Low-Power Wireless Personal Area
	Networks (6LoWPANs) and IPv6 Routing Protocol for Low-		Networks (6LoWPANs) and IPv6 Routing Protocol for Low-
	Power and Lossy Networks (RPL). It is defined in		Power and Lossy Networks (RPL). It is defined in
	[I-D.wang-6tisch-6top-sublayer].		[I-D.wang-6tisch-6top-sublayer].
	6top Data Convey Model: Model describing how the 6top adaptation		6top Data Convey Model: Model describing how the 6top adaptation
	layer feeds the data flow coming from upper layers into		layer feeds the data flow coming from upper layers into
	TSCH. It is composed by an I-MUX module, a MUX module, a		TSCH. It is composed by an I-MUX module, a MUX module, a
	set of priority queues, and a PDU (Payload Data Unit).See		set of priority queues, and a PDU (Payload Data Unit).
	[I-D.wang-6tisch-6top-sublayer].		See [I-D.wang-6tisch-6top-sublayer].
	ARO: [RFC6775] defines a number of new Neighbor Discovery		ARO: [RFC6775] defines a number of new Neighbor Discovery
	options including the Address Registration Option (ARO).		options including the Address Registration Option (ARO).
	ASN: Absolute Slot Number, the total number of timeslots that		ASN: Absolute Slot Number, the total number of timeslots that
	has elapsed since the PAN coordinator has started the		has elapsed since the PAN coordinator has started the
	TSCH network. It is incremented by one at each timeslot.		TSCH network. It is incremented by one at each timeslot.
	It is wide enough to not roll over in practice. See		It is wide enough to not roll over in practice. See
	[IEEE802154e].		[IEEE802154e].
	Blacklist of Frequencies: Simply defined Blacklist in [IEEE802154e],		Blacklist of Frequencies: Simply defined Blacklist in [IEEE802154e],
	it is the set of frequencies which should not be used for		it is the set of frequencies among the 16 available ones,
	communication.		which should not be used for communication.
	BBR: Backbone Router. In the 6TiSCH architecture, it is an		BBR: Backbone Router. In the 6TiSCH architecture, it is an
	LBR and also a IPv6 ND-efficiency-aware Router (NEAR)		LBR and also a IPv6 ND-efficiency-aware Router (NEAR)
	[I-D.chakrabarti-nordmark-6man-efficient-nd]. It		[I-D.chakrabarti-nordmark-6man-efficient-nd]. It
	performs ND proxy operations between registered devices		performs ND proxy operations between registered devices
	and classical ND devices that are located over the		and classical ND devices that are located over the
	backbone.		backbone.
	Broadcast Cell: A scheduled cell used for broadcast transmission.		Broadcast Cell: A scheduled cell used for broadcast transmission.
	Bundle: A group of equivalent scheduled cells, i.e. cells		Bundle: A group of equivalent scheduled cells, i.e. cells
	identified by different [slotOffset, channelOffset],		identified by different [slotOffset, channelOffset],
	which are scheduled for a same purpose, with the same		which are scheduled for a same purpose, with the same
	neighbor, with the same flags, and the same slotframe.		neighbor, with the same flags, and the same slotframe.
	The size of the bundle refers to the number of cells it		The size of the bundle refers to the number of cells it
	contains. Given the length of the slotframe, the size of		contains. Given the length of the slotframe, the size of
	the bundle translates directly into bandwidth.		the bundle translates directly into bandwidth. A bundle
			represents a half-duplex link between nodes, one
			transmitter and one or more receivers, with a bandwidth
			that amount to the sum of the cells in the bundle. A
			bundle is globally identified by (source MAC, destination
			MAC, TrackID). At Layer 3 a pair of bundles forms a
			link. By usining a well-known constant, NULLT, as
			TrackId for a L3 link, the IP link between adjacent nodes
			A and B comprises 2 bundles: (macA, macB, NULLT) and
			(macB, macA, NULLT). At L2 a pair of bundles forms a
			switching state. Considered a segment A-B-C along a
			track, there are two bundles in node B, one incoming =
			(macA, macB, trackId) and one outgoing = (macB, macC,
			trackId).
	Cell: A single element in the TSCH schedule, identified by a		Cell: A single element in the TSCH schedule, identified by a
	slotOffset, a channelOffset, a slotframeHandle. A cell		slotOffset, a channelOffset, a slotframeHandle. A cell
	can be scheduled or unscheduled.		can be scheduled or unscheduled.
	Centralized Cell Reservation: A reservation of a cell done by a		Centralized Cell Reservation: A reservation of a cell done by a
	centralized entity (e.g., a PCE) in the network.		centralized entity (e.g., a PCE) in the network.
	Centralized Track Reservation: A reservation of a track done by a		Centralized Track Reservation: A reservation of a track done by a
	centralized entity (e.g., a PCE) in the network.		centralized entity (e.g., a PCE) in the network.
	ChannelOffset: Identifies a row in the TSCH schedule. The number of		ChannelOffset: Identifies a row in the TSCH schedule. The number of
	available channelOffsets is equal to the number of		available channelOffsets is equal to the number of
	available frequencies. The channelOffset translates into		available frequencies. The channelOffset translates into
	a frequency when the communication takes place, resulting		a frequency when the communication takes place, resulting
	in channel hopping, as detailed in		in channel hopping, as detailed in [RFC7554].
	[I-D.ietf-6tisch-tsch].
	Channel Distribution/Usage (CDU) matrix: : Matrix of cells (i,j)		Channel Distribution/Usage (CDU) matrix: : Matrix of cells (i,j)
	representing the spectrum (channel) distribution among		representing the spectrum (channel) distribution among
	the different nodes in the 6TiSCH network. The CDU		the different nodes in the 6TiSCH network. The CDU
	matrix has width in timeslots, equal to the period of the		matrix has width in timeslots, equal to the period of the
	network scheduling operation, and height equal to the		network scheduling operation, and height equal to the
	number of available channels. Every cell (i,j) in the		number of available channels. Every cell (i,j) in the
	CDU, identified by (slotOffset, channelOffset), belongs		CDU, identified by (slotOffset, channelOffset), belongs
	to a specific chunk. It has to be noticed that such a		to a specific chunk. It has to be noticed that such a
	matrix, even though it includes all the cells grouped in		matrix which includes all the cells grouped in chunks,
	chunks, belonging to different slotframes, is different		belonging to different slotframes, is different from the
	from the TSCH schedule.		TSCH schedule.
	Chunk: A well-known list of cells, distributed in time and		Chunk: A well-known list of cells, distributed in time and
	frequency, within a CDU matrix; a chunk represents a		frequency, within a CDU matrix; a chunk represents a
	portion of a CDU matrix. The partition of the CDU in		portion of a CDU matrix. The partition of the CDU in
	chunks is globally known by all the nodes in the network		chunks is globally known by all the nodes in the network
	to support the appropriation process, which is a		to support the appropriation process, which is a
	negotiation between nodes within an interference domain.		negotiation between nodes within an interference domain.
	A node that manages to appropriate a chunk gets to decide		A node that manages to appropriate a chunk gets to decide
	which transmissions will occur over the cells in the		which transmissions will occur over the cells in the
	chunk within its interference domain (i.e., a parent node		chunk within its interference domain (i.e., a parent node
	skipping to change at page 6, line 16 ¶		skipping to change at page 6, line 20 ¶
	the resources are needed.		the resources are needed.
	Distributed Cell Reservation: A reservation of a cell done by one or		Distributed Cell Reservation: A reservation of a cell done by one or
	more in-network entities (typically a connection		more in-network entities (typically a connection
	endpoint).		endpoint).
	Distributed Track Reservation: A reservation of a track done by one		Distributed Track Reservation: A reservation of a track done by one
	or more in-network entities (typically a connection		or more in-network entities (typically a connection
	endpoint).		endpoint).
	EARO: [I-D.thubert-6lo-rfc6775-update-reqs]extends the ARO		EARO: [I-D.thubert-6lo-rfc6775-update-reqs] extends the ARO
	option to include some additional fields necessary to		option to include some additional fields necessary to
	distinguish duplicate addresses from nodes that have		distinguish duplicate addresses from nodes that have
	moved networks when there are mulitple LLNs linked over a		moved networks when there are mulitple LLNs linked over a
	backbone.		backbone.
	EB: Enhanced Beacon frame used by a node to announce the		EB: Enhanced Beacon frame used by a node to announce the
	presence of the network. It contains useful information		presence of the network. It contains useful information
	(see [IEEE802154e] for details) that allow a new node to		(see [IEEE802154e] for details) that allow a new node to
	synhronize and join the network.		synhronize and join the network.
	skipping to change at page 6, line 43 ¶		skipping to change at page 6, line 47 ¶
	GMPLS: Generalized Multi-Protocol Label Switching, a 2.5 layer		GMPLS: Generalized Multi-Protocol Label Switching, a 2.5 layer
	service that is used to forward packets based on the		service that is used to forward packets based on the
	concept of generalized labels.		concept of generalized labels.
	Hard Cell: A scheduled cell which the 6top sublayer cannot		Hard Cell: A scheduled cell which the 6top sublayer cannot
	reallocate. See [I-D.wang-6tisch-6top-sublayer].		reallocate. See [I-D.wang-6tisch-6top-sublayer].
	Hopping Sequence: Ordered sequence of frequencies, identified by a		Hopping Sequence: Ordered sequence of frequencies, identified by a
	Hopping_Sequence_ID, used for channel hopping, when		Hopping_Sequence_ID, used for channel hopping, when
	translating the channel offset value into a frequency		translating the channel offset value into a frequency
	(i.e., PHY channel). See [IEEE802154e] and		(i.e., PHY channel). See [IEEE802154e] and [RFC7554].
	[I-D.ietf-6tisch-tsch].
	IE: Information Elements, a list of Type-Length-Value		IE: Information Elements, a list of Type-Length-Value
	containers placed at the end of the MAC header, used to		containers placed at the end of the MAC header, used to
	pass data between layers or devices. A small number of		pass data between layers or devices. A small number of
	types are defined by [IEEE802154e], but a range of types		types are defined by [IEEE802154e], but a range of types
	is available for extensions, and thus, is exploitable by		is available for extensions, and thus, is exploitable by
	6TiSCH. See [IEEE802154e].		6TiSCH. See [IEEE802154e].
	I-MUX module: Inverse-Multiplexer, a classifier that receives		I-MUX module: Inverse-Multiplexer, a classifier that receives
	6LoWPAN frames and places them into priority queues. See		6LoWPAN frames and places them into priority queues. See
	skipping to change at page 7, line 22 ¶		skipping to change at page 7, line 25 ¶
	as a particular method (e.g., a REST GET) and a Data		as a particular method (e.g., a REST GET) and a Data
	Model for the state to be exchanged.		Model for the state to be exchanged.
	Interference Domain: The Interference Domain of a given		Interference Domain: The Interference Domain of a given
	(transmitter) node A includes all the nodes in its		(transmitter) node A includes all the nodes in its
	neighbourhood that can generate interference at its		neighbourhood that can generate interference at its
	receiver B, when transmitting on the same channel (i.e.,		receiver B, when transmitting on the same channel (i.e.,
	using the same frequency).		using the same frequency).
	JCE: The Join Coordination Entity (JCE) is a central entity		JCE: The Join Coordination Entity (JCE) is a central entity
	like the Path Computation Engine (PCE), that may assist		like the Path Computation Element (PCE), that may assist
	in several aspects of the join protocol, such as		in several aspects of the join protocol, such as
	authentication, authorization, and configuration.		authentication, authorization, and configuration.
	JA: The Join Assistant (JA) is a one-hop neighbor of a		JA: The Join Assistant (JA) is a one-hop neighbor of a
	joining node that may facilitate it to become meaningful		joining node that may facilitate it to become meaningful
	part of the network (e.g., by serving as a local		part of the network (e.g., by serving as a local
	connectivity point to the remainder of the network).		connectivity point to the remainder of the network).
	Join Protocol: The protocol which secures initial communication		Join Protocol: The protocol which secures initial communication
	between a joining node and the JCE.		between a joining node and the JCE.
	skipping to change at page 7, line 52 ¶		skipping to change at page 8, line 7 ¶
	terminology. In the context of the 6TiSCH architecture,		terminology. In the context of the 6TiSCH architecture,
	which applies to Low Power Lossy Networks (LLNs), an IPv6		which applies to Low Power Lossy Networks (LLNs), an IPv6
	subnet is usually not congruent to a single link and		subnet is usually not congruent to a single link and
	techniques such as IPv6 Neighbor Discovery Proxying are		techniques such as IPv6 Neighbor Discovery Proxying are
	used to achieve reachability within the multilink subnet.		used to achieve reachability within the multilink subnet.
	A link is distinct from a track. In fact, link local		A link is distinct from a track. In fact, link local
	addresses are not expected to be used over a track for		addresses are not expected to be used over a track for
	end to end communication. Finally, from the Layer 3		end to end communication. Finally, from the Layer 3
	perspective (where the inner complexities of TSCH		perspective (where the inner complexities of TSCH
	operations are hidden to enable classical IP routing and		operations are hidden to enable classical IP routing and
	Forwarding), a single radio interface may be seen as a		forwarding), a single radio interface may be seen as a
	number of Links with different capabilities for unicast		number of Links with different capabilities for unicast
	or multicast services.		or multicast services.
	Logical Cell: A cell that corresponds to granted bandwidth but is
	only lazily associated to a physical cell, based on
	usage.
	MAC: Medium Access Control.		MAC: Medium Access Control.
	MUX Module: Multiplexer, the entity that dequeues frames from		MUX Module: Multiplexer, the entity that dequeues frames from
	priority queues and associates them to a cell for		priority queues and associates them to a cell for
	transmission. See [I-D.wang-6tisch-6top-sublayer].		transmission. See [I-D.wang-6tisch-6top-sublayer].
	NEAR: IPv6 ND-efficiency-aware Router, as defined in		NEAR: IPv6 ND-efficiency-aware Router, as defined in
	[I-D.chakrabarti-nordmark-6man-efficient-nd].		[I-D.chakrabarti-nordmark-6man-efficient-nd].
	NME: Network Management Entity, the entity in the network		NME: Network Management Entity, the entity in the network
	skipping to change at page 8, line 50 ¶		skipping to change at page 8, line 50 ¶
	changing the slotOffset and/or channelOffset of a soft		changing the slotOffset and/or channelOffset of a soft
	cell.		cell.
	(to) Schedule a Cell: The action of turning an unscheduled cell into		(to) Schedule a Cell: The action of turning an unscheduled cell into
	a scheduled cell.		a scheduled cell.
	Scheduled cell: A cell which is assigned a neighbor MAC address		Scheduled cell: A cell which is assigned a neighbor MAC address
	(broadcast address is also possible), and one or more of		(broadcast address is also possible), and one or more of
	the following flags: TX, RX, shared, timeskeeping. A		the following flags: TX, RX, shared, timeskeeping. A
	scheduled cell can be used by the IEEE802.15.4e TSCH		scheduled cell can be used by the IEEE802.15.4e TSCH
	implementation to communicate. A scheduled cell can be a		implementation to communicate. A scheduled cell can be
	hard cell or a soft cell.		either a hard or a soft cell.
	Shared Cell: A cell marked with both the "TX" and "shared" flags.		Shared Cell: A cell marked with both the "TX" and "shared" flags.
	This cell can be used by more than one transmitter node.		This cell can be used by more than one transmitter node.
	A backoff algorithm is used to resolve contention. See		A backoff algorithm is used to resolve contention. See
	[I-D.ietf-6tisch-tsch].		[RFC7554].
	SlotOffset: Identifies a column in the TSCH schedule, i.e., the		SlotOffset: Identifies a column in the TSCH schedule, i.e., the
	number of timeslots since the beginning of the current		number of timeslots since the beginning of the current
	iteration of the slotframe.		iteration of the slotframe.
	Slotframe: A MAC-level abstraction that is internal to the node and		Slotframe: A MAC-level abstraction that is internal to the node and
	contains a series of timeslots of equal length and		contains a series of timeslots of equal length and
	priority. It is characterized by a slotframe_ID, and a		priority. It is characterized by a slotframe_ID, and a
	slotframe_size. Multiple slotframes can coexist in a		slotframe_size. Multiple slotframes can coexist in a
	node's schedule, i.e., a node can have multiple		node's schedule, i.e., a node can have multiple
	activities scheduled in different slotframes, based on		activities scheduled in different slotframes, based on
	the priority of its packets/traffic flows. The timeslots		the priority of its packets/traffic flows. The timeslots
	in the Slotframe are indexed by the SlotOffset; the first		in the Slotframe are indexed by the SlotOffset; the first
	timeslot is at SlotOffset 0.		timeslot is at SlotOffset 0.
	Soft Cell: A scheduled cell which the 6top sublayer can reallocate,		Soft Cell: A scheduled cell which the 6top sublayer can reallocate,
	as described in [I-D.wang-6tisch-6top-sublayer].		as described in [I-D.wang-6tisch-6top-sublayer].
	TF: Track Forwarding. It is the simplest and fastest		TF: Track Forwarding. It is the simplest and fastest
	forwarding model supported by 6TiSCH. It is a GMPLS-like		forwarding model supported by 6TiSCH. It is a GMPLS-like
	forwarding model. The input cell characterizes the flow		forwarding model. The incoming bundle (and thus, the
	and indicates the output cell.		input cell) characterizes the flow and indicates the
			outgoing bundle (and output cell).
	Timeslot: A basic communication unit in TSCH which allows a		Timeslot: A basic communication unit in TSCH which allows a
	transmitter node to send a frame to a receiver neighbor,		transmitter node to send a frame to a receiver neighbor,
	and that receiver neighbor to optionally send back an		and that receiver neighbor to optionally send back an
	acknowledgment.		acknowledgment.
	Time Source Neighbor: A neighbor a node uses as its time reference,		Time Source Neighbor: A neighbor that a node uses as its time
	and to which it needs to keep its clock synchronized. A		reference, and to which it needs to keep its clock
	node can have one or more time source neighbors.		synchronized. A node can have one or more time source
			neighbors.
	Track: A determined sequence of cells along a multi-hop path.		Track: A determined sequence of cells along a multi-hop path.
	It is typically the result of a track reservation. The		It is typically the result of a track reservation. The
	node that initializes the process for establishing a		node that initializes the process for establishing a
	track is the owner of the track. The latter assigns a		track is the owner of the track. The latter assigns a
	unique identifier to the track, called TrackID.		unique identifier to the track, called TrackID.
	TrackID: Unique identifier of a track, assigned by the owner of		TrackID: Unique identifier of a track, assigned by the owner of
	the track.		the track.
	skipping to change at page 11, line 29 ¶		skipping to change at page 11, line 29 ¶
	6552, March 2012.		6552, March 2012.
	[RFC6775] Shelby, Z., Chakrabarti, S., Nordmark, E., and C. Bormann,		[RFC6775] Shelby, Z., Chakrabarti, S., Nordmark, E., and C. Bormann,
	"Neighbor Discovery Optimization for IPv6 over Low-Power		"Neighbor Discovery Optimization for IPv6 over Low-Power
	Wireless Personal Area Networks (6LoWPANs)", RFC 6775,		Wireless Personal Area Networks (6LoWPANs)", RFC 6775,
	November 2012.		November 2012.
	[RFC7252] Shelby, Z., Hartke, K., and C. Bormann, "The Constrained		[RFC7252] Shelby, Z., Hartke, K., and C. Bormann, "The Constrained
	Application Protocol (CoAP)", RFC 7252, June 2014.		Application Protocol (CoAP)", RFC 7252, June 2014.
			[RFC7554] Watteyne, T., Palattella, M., and L. Grieco, "Using IEEE
			802.15.4e Time-Slotted Channel Hopping (TSCH) in the
			Internet of Things (IoT): Problem Statement", RFC 7554,
			May 2015.
	6.2. Informative References		6.2. Informative References
	[I-D.chakrabarti-nordmark-6man-efficient-nd]		[I-D.chakrabarti-nordmark-6man-efficient-nd]
	Chakrabarti, S., Nordmark, E., Thubert, P., and M.		Chakrabarti, S., Nordmark, E., Thubert, P., and M.
	Wasserman, "IPv6 Neighbor Discovery Optimizations for		Wasserman, "IPv6 Neighbor Discovery Optimizations for
	Wired and Wireless Networks", draft-chakrabarti-nordmark-		Wired and Wireless Networks", draft-chakrabarti-nordmark-
	6man-efficient-nd-07 (work in progress), February 2015.		6man-efficient-nd-07 (work in progress), February 2015.
	[I-D.ietf-6tisch-tsch]
	Watteyne, T., Palattella, M., and L. Grieco, "Using
	IEEE802.15.4e TSCH in an IoT context: Overview, Problem
	Statement and Goals", draft-ietf-6tisch-tsch-06 (work in
	progress), March 2015.
	[I-D.ietf-roll-terminology]		[I-D.ietf-roll-terminology]
	Vasseur, J., "Terms used in Routing for Low power And		Vasseur, J., "Terms used in Routing for Low power And
	Lossy Networks", draft-ietf-roll-terminology-13 (work in		Lossy Networks", draft-ietf-roll-terminology-13 (work in
	progress), October 2013.		progress), October 2013.
	[I-D.thubert-6lo-rfc6775-update-reqs]		[I-D.thubert-6lo-rfc6775-update-reqs]
	Thubert, P. and P. Stok, "Requirements for an update to		Thubert, P. and P. Stok, "Requirements for an update to
	6LoWPAN ND", draft-thubert-6lo-rfc6775-update-reqs-06		6LoWPAN ND", draft-thubert-6lo-rfc6775-update-reqs-06
	(work in progress), January 2015.		(work in progress), January 2015.
	skipping to change at page 12, line 17 ¶		skipping to change at page 12, line 17 ¶
	Recovery", draft-thubert-roll-forwarding-frags-02 (work in		Recovery", draft-thubert-roll-forwarding-frags-02 (work in
	progress), September 2013.		progress), September 2013.
	[I-D.wang-6tisch-6top-sublayer]		[I-D.wang-6tisch-6top-sublayer]
	Wang, Q., Vilajosana, X., and T. Watteyne, "6TiSCH		Wang, Q., Vilajosana, X., and T. Watteyne, "6TiSCH
	Operation Sublayer (6top)", draft-wang-6tisch-6top-		Operation Sublayer (6top)", draft-wang-6tisch-6top-
	sublayer-01 (work in progress), July 2014.		sublayer-01 (work in progress), July 2014.
	6.3. External Informative References		6.3. External Informative References
	[IEEE.802.1AR]
	IEEE standard for Information Technology, "802.1AR-2009 -
	IEEE Standard for Local and metropolitan area networks -
	Secure Device Identity", 2009.
	[IEEE802154e]		[IEEE802154e]
	IEEE standard for Information Technology, "IEEE std.		IEEE standard for Information Technology, "IEEE std.
	802.15.4e, Part. 15.4: Low-Rate Wireless Personal Area		802.15.4e, Part. 15.4: Low-Rate Wireless Personal Area
	Networks (LR-WPANs) Amendment 1: MAC sublayer", April		Networks (LR-WPANs) Amendment 1: MAC sublayer", April
	2012.		2012.
	Authors' Addresses		Authors' Addresses
	Maria Rita Palattella (editor)		Maria Rita Palattella (editor)
	University of Luxembourg		University of Luxembourg
End of changes. 24 change blocks.
	55 lines changed or deleted		51 lines changed or added
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