November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 1

doc.: IEEE 802.15-07-0972-00-0005

Submission

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Submission Title: [u-Services That Require Features of WiBEEM Protocol]Date Submitted: [14 November, 2007]Source: [Suk-Hyun Song (1), and Ho-In Jeon (2)] Company: [National Information Society Agency(NIA) (1), and Dept. Engineering, Kyung-Won

University (KWU) (2)] Address: [San 65, Bok-Jung-Dong, Sung-Nam-Shi, Kyung-Gi-Do, Republic of Korea] Voice 1: [ +82-31-753-2533], Voice 2:[ +82-10-4708-5328] FAX: [+82-31-753-2532], E-Mail: [jeon1394@kornet.net]Re: [This work has been supported by KATS and SKTelecom.] Abstract: [This document proposes some services enabled by WiBEEM Protocol.]Purpose: [Technical Contributions on the IEEE 802.15 WNG Task Group]Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15.

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 2

doc.: IEEE 802.15-07-0972-00-0005

Submission

u-Services That Require

Features of WiBEEM Protocol

Suk-Hyun Song(1), and Ho-In Jeon(2)

(1) NIA (National Information Society Agency),(2) Kyung-Won University,

Republic of Korea

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 3

doc.: IEEE 802.15-07-0972-00-0005

Submission

Contents• Introduction to WiBEEM(Wireless Beacon-enabled

Energy Efficient Mesh Network) Protocol– Improved PHY with Data Rate– Advanced MAC with Beacon Scheduling with QoS Support– Enhanced NWK with Device Mobility

• u-Services that require features of WiBEEM Protocol– Healthcare Service– ITS– Disaster Prevention Service– Bridge Management Service– Underground Facility Management

• Conclusion

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 4

doc.: IEEE 802.15-07-0972-00-0005

Submission

• Features of WiBEEM – Consumes very low power

– Ease of installation

– Reliable data transfer from 250 Kbps to 4 Mbps

– 1-hop comm. within 30 m and expandable to several kilometers via Mesh.

– Mesh topology for beacon-enabled sensor networks

– Extremely low-cost

– A very long battery life

– A simple and flexible protocol

• Target market– U-Healthcare

– Information Infrastructure for Digital Hospital

– WBAN (Body Area Network)

– U-Home Networking

– Automatic Meter Reading

– Universal Remote Controller

– Automotive Networks

– Industrial Networks

– Facility Management of a City

– Sensor Network

– Audio/Video capable

Overview of the WiBEEM Specification

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 5

doc.: IEEE 802.15-07-0972-00-0005

Submission

WiBEEM Protocol Stack

Higher Layer

WiBEEM NWK Layer

WiBEEM MAC Layer

WiBEEM Physical (PHY) Layer

Security NetworkMessage Broker

RoutingManagement

2.4 GHzRadio (Ch.1)

NLDE-SAP NLME-SAP

MLME-SAP

PLME-SAPPLDE-SAP

MLDE-SAP

NetworkManagement

2.4 GHzRadio (Ch.2)

2.4 GHzRadio (Ch.3)

2.4 GHzRadio (Ch.16)

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 6

doc.: IEEE 802.15-07-0972-00-0005

Submission

PHY Overview of the WiBEEM • Data Rate

– Minimum 250 Kbps when just one channel is used.– Maximum 4 Mbps for Isochronous Data using 16 channels

• Channels– Max 16, Min 1 channel in the 2.4GHz ISM band– ACA (Adaptive Channel Aggregation) concept is used.

• Modulation– O-QPSK at 2.4GHz

• Coexistence with– 802.11b DSSS and 802.11g OFDM of WLAN– 802.15.1 FHSS of Bluetooth– 802.15.3 DSSS of High-Rate WPAN– 802.15.4 O-QPSK of Low-Rate WPAN

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 7

doc.: IEEE 802.15-07-0972-00-0005

Submission

PPDU: 133 Bytes

PreambleSequence

Start ofFrame

Delimiter

FrameLength

MPDU (MAC Protocol Data Unit)

Octets: 4 1 1

SHR (Synchronization Header)

PHR ( PHYHeader )

PSDU (PHY Service Data Unit)

PPDU (PHY Protocol Data Unit)

8 to 127

• Bigger PPDU size would be preferable.– Large file synchronizations.

– PACS applications in the hospital

• Data contention and delay may cause some problems.

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 8

doc.: IEEE 802.15-07-0972-00-0005

Submission

MAC Overview of the WiBEEM • Multiple Beacons in one Superframe • Low Power Consumption due to the Perfect Synchroni-

zation all over the Network by using Beacon Scheduling• Dynamic Channel Selection• Network Topology

– Star Topology

– P2P Topology

– Cluster-tree Network Topology

– Mesh Topology for Beacon as well as Beaconless Network

• 65,536 = 216 devices per MPID (Mesh Piconet ID)• Data Security Support with AES-128 Security

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 9

doc.: IEEE 802.15-07-0972-00-0005

Submission

New Superframe Structure of WiBEEM

BOP CAP CFP DSP

Beacon #1

SD (Superframe Duration)

BI (Beacon Interval)

BOPLBOPL = BTTSL × maxBeaconNumber [symbols]

SD = aBaseSuperframeDuration × 2SO [symbols]

= 960 × 2SO [symbols]

BI = aBaseSuperframeDuration × 2BO [symbols] = 960 × 2BO [symbols]

Beacon #1

Beacon #2

Beacon #n

PQP

PQPPQP = PQPL × aBaseSuperframeDuration [symbols]

CFP = CFPL × aBaseSuperframeDuration [symbols]

CFP

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 10

doc.: IEEE 802.15-07-0972-00-0005

Submission

39

38

37

21

2223

24

25

2627

28

29

30

31

32

3335

36

34

20

19

18

1

2

34

5

6

7

8

9

MPC 10

11

12

13

14 1617

15

40

1

2

3

4

5

6

7

8

9

10

13

11

6

12

9

9

14

11

8

10

10

11

15 5

12

5

16

11 6

9

13

13

7

7

8

7

12

10

15

14

Beacon Scheduling Done for 40 Nodes

CFPPQP DeepSleep

BOP1 2 3 4 5 6 7 8 9 10 1211 13 14 15 16

1 2 3 4 5 6 7

1011

8 9

12

13 14

15

16

17

18

192021

22 2324

25

26 27

28

29

30 31

32

33 34

35

36

37

38

3940

BTTSLBTTS

CAP

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 11

doc.: IEEE 802.15-07-0972-00-0005

Submission

Beacon Frame Format and Payload

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 12

doc.: IEEE 802.15-07-0972-00-0005

Submission

MAC and NWK FC Fields for QoS

Bits : 0-2 3 4 5 6 7-9 10-11 12-13 14-15

Frame Type

Security Enabled

Frame Pending

Ack. Request

Intra-PAN

ReservedDestination Addressing

Mode

QoSPriority

Source Addressing

Mode

Bits : 0-1

Frametype

2-5

Protocolversion

6

Discoverroute

7

Fragmentation

9

Security

12-15

Reserved

8

MulticastFlag

MAC Frame Control Field

NWK Frame Control Field

10-11

QoSPriority

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 13

doc.: IEEE 802.15-07-0972-00-0005

Submission

Proposed Prioritized Channel Access in CAP

• Each channel access function contends with – AIFS[AC] (instead of LIFS) and CW[AC] (instead of CW)

BusyMedium

SIFS

AIFS[AC]

BackoffWindow

Slot Time

Defer Access Select Slot and decrement backoffas long as medium stays idle

AIFS[AC]

Contention Windowfrom [0,CW[AC]]

Immediate access whenmedium is idle >= AIFS[AC]

Next Frame

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 14

doc.: IEEE 802.15-07-0972-00-0005

Submission

Backoff Times with UP for New MAC

Priority Access Category Designated Backoff Time at the CAP

Lowest

Highest

0 26 – 35

1 26 – 30

2 11 – 25

3 11 – 20

4 11 – 15

5 0 – 10

6 0 – 7

7 0 – 5

BOP CAP CFP DSP

Beacon #1Beacon #1

Beacon #2

Traffic with UP of 6 and 7 only can access the channel in this tile slot.

PQP

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 15

doc.: IEEE 802.15-07-0972-00-0005

Submission

NWK Overview of the WiBEEM • Network Formation by Passive and Active Scan• Network Growing and Network Management• Efficient Real-Time Short Address Allocations

– Addressing mechanism based on NAA (Next Address Available) algorithm for Efficient Address Space Usage

– The short address can be assigned in real-time.• Low Latency Routing Mechanism

– WiBEEM Routing based on simplified AODV-like routing– Different from the ZigBee routing

• Network Message Broker• High speed mobility support• Data Fragmentation

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 16

doc.: IEEE 802.15-07-0972-00-0005

Submission

NWK General Frame FormatOctets: 2 0/1

FrameControl

2 2 0/2

TargetAddress

Origi-nator

Address

Max.BroadcastHop Count

BroadcastID Number

Routing Fields

NWK Header

Variable

FramePayload

NWKPayload

2

TTL

0/1

Fragmen-tation

ID

Var

Fragmen-tationCount

Var

Fragmen-tation

Number

Fragmentation Fields

0/1

Fragmen-tation

Length

Bits : 0-1

FrameType

2-5

ProtocolVersion

6

DiscoverRoute

7

Fragmentation

9

Security

10-15

Reserved

8

MulticastFlag

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 17

doc.: IEEE 802.15-07-0972-00-0005

Submission

NAA Information in Beacon Payload

FrameControl

BeaconSequenceNumber

Source Address

Information

SuperframeSpecification

CFPFields

PendingAddress

Field

BeaconPayload

FCS

1 4/10 2 k m Variable 2

MHR (MAC Header) MSDU (MAC Service Data Unit) MFR(MAC Footer)

Bits : 0-3

BeaconOrder

4-7

SuperframeOrder

8-11

FinalCAPSlot

12

Battery lifeExtension

13

Reserved

14

PANCoordinator

15

AssociationPermit

Octets: 2

1Octets: 1

BOPL

1

My BTTS(BeaconTxTimeSlot)

1

Depth

2

NAA

2

ChildShort

Address

2

ParentShort

Address

1

HOPCount

1

ChildDeviceType

1

MyProfile

ID

1

BTTSL

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 18

doc.: IEEE 802.15-07-0972-00-0005

Submission

A

C DB

F=5 E

WRC WRC WRC

WRC

1

2

3

NAA Value in theBeacon Payload is 5

NAA Value in theBeacon Payload is 5

Efficient Real-Time Addressing by NAAAssociation Request

Association Response

NAA Grant Request

NAA Grant Response

WMC

4

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 19

doc.: IEEE 802.15-07-0972-00-0005

Submission

Services Requiring Features of WiBEEM

• Healthcare Service

• ITS

• Disaster Prevention Service

• Bridge Management Service

• Underground Facility Management

• And there are a lot more!

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 20

doc.: IEEE 802.15-07-0972-00-0005

Submission

Detectors

TrafficLightsVMS

CCTV Control BoxUCC

TrafficControl Center

Intelligent Transport System

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 21

doc.: IEEE 802.15-07-0972-00-0005

Submission

Router

Water contamina Population Sensor node

Industry

PC

stream

Air PopulationSensor node

Router

Router

Construction VibrationSensor nod

Sink Node+

CCTV

CCCHome Information

Notice

PDA Officer

Environment Management

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 22

doc.: IEEE 802.15-07-0972-00-0005

Submission

UCC

Router Router Router Router

Disaster Prevention

Center

City TrafficControl Center

Temperature

Gas Leak

Vibration

Salinity

Pressure

G/W

PTZ-CameraFreezing/Fog Sensor

Indicator

G/WPTZ-Camera

StaticMeasurement Bridge Safety

DynamicMeasurement

Facility Management

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 23

doc.: IEEE 802.15-07-0972-00-0005

Submission

Bridge Management - Today

CDMAG/W

WaterPollutionSensor

WaterTemperature

Sensor

WindPressureSensor

CDMABS

CDMABS

CDMAG/WCrack

Sensor

CDMAG/W

CDMAG/W

CDMAG/W

CDMAG/W

CDMABS

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 24

doc.: IEEE 802.15-07-0972-00-0005

Submission

Bridge Management - Tomorrow

WiBEEMInfrastructure

WaterPollutionSensor

WaterTemperature

Sensor

WindPressureSensor

WiBEEMInfrastructure

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 25

doc.: IEEE 802.15-07-0972-00-0005

Submission

FreezingSensor

Road Management

WiBEEMInfrastructure

WiBEEMInfrastructure

Fog Sensor

Web Camera

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 26

doc.: IEEE 802.15-07-0972-00-0005

Submission

U-Healthcare Service Scenario

U-Hospital

U-Healthcare CenterInternet

RG(AP)

8. Emergency Service

CellularPhone

WirelessInternet

10. Provision of Contents Subscribed

1. Subscription of U-Healthcare Service

2. Data Collection3. Emergency Alert

4. Transmit the Collected Data

7. Call the Emergency Service

9. Periodic Monitoring

Home

5. Store Data

6. Analyze the Data

2. Data Collection3. Emergency Alert

4. Transmit the Collected Data

WiBEEM

WiBEEM CDMA, GSM, or HSDPA

FTTH

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 27

doc.: IEEE 802.15-07-0972-00-0005

Submission

Healthcare Services

WiBEEM

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 28

doc.: IEEE 802.15-07-0972-00-0005

Submission

Conclusions• WiBEEM protocol has unique features of supporting low

power consumption, device mobility, and QoS.• There are many examples of services that require device

mobility and QoS.– Facility management

– Healthcare Services

– Disaster Prevention

• Enhancement of IEEE 802.15.4 MAC has to be made that can support QoS and device mobility over mesh network.

• WiBEEM protocol is one of the possible candidates.

November 2007

Suk-Hyun Song (NIA), and Ho-In Jeon (KWU)Slide 29

doc.: IEEE 802.15-07-0972-00-0005

Submission

Acknowledgment

• This work has been supported partially by

NIA(National Information Society Agency).