SC25 WG1 N1271

WiBEEM Technology for Wireless Home Network Services : 

WiBEEM Technology for Wireless Home Network Services SC25/WG1 N1271

Contents: 

Contents Wireless Home Network Services and Related Issues Introduction to WiBEEM (Wireless Beacon-enabled Energy Efficient Mesh network) Protocol Wireless Mesh Network Capable of Saving Power Multiple Beacons Transmitted in One Superframe with all the Beacons Scheduled for the Avoidance of Beacon Conflicts Space-Efficient Short Address Allocations in Real-Time High Speed Device Mobility and QoS Supported Structure of the WiBEEM Standard Part 1: Specifications on PHY Layer Specifications Part 2: Specifications on MAC Layer Specifications Part 3: Specifications on NWK Layer Specifications Conclusions

Slide3: 

Wireless Home Network Services Wireless Healthcare Service Kids and Patients Care Senile Dementia Control Home Appliance Control Lights Control Gas Valve Shut Down AMR Service Wireless Internet Service Guest / Intruder Control

Slide4: 

Healthcare Services and Wireless Terminal Wireless Terminal Wireless Healthcare Watch WiBEEM

Wireless Home Services with WiBEEM Tech.: 

Wireless Home Services with WiBEEM Tech. DCam. VPhone DTV DAM HS/ MMRG Internet FTTH DTV PVR VPhone Refrig. DCam. PC STB Living Room Room #1 Room #3 Room #2 Kitchen Door Phone Water Meter Gas Meter WiBEEM Microwave Oven PC PDA DCam. Printer PC Room #4 DTV Power Meter Meter Reader DSLAM Bath- room Utility Room WiBEEM WMC ONU VDSL MODEM Washer WiBEEM WiBEEM WiBEEM WiBEEM Association Point WiBEEM

Characteristics of Wireless Home Service (1/3): 

Full connectivity all over the house with a wireless network is not available due to dead zones of RF signals. Light switches and AMR devices are everywhere in the house. An energy-efficient wireless mesh network solution such as WiBEEM is a solution to this problem. Home appliances equipped with WiBEEM module could function as the WRCs (WiBEEM Routable Coordinator) that will allow the full connectivity. If not, dedicated WRCs could be installed in proper places. The reduction of power consumption could be a critical issue for Wireless Home services. Healthcare watch worn on an elderly person’s arm should last at least 2 years with 2 AA-batteries. Characteristics of Wireless Home Service (1/3)

Characteristics of Wireless Home Service (2/3): 

Every home appliance reports its status to the mobile terminal, in a seamless manner. One WMC (WiBEEM Mesh Coordinator) will take care of all the traffics of MRCs, sensor nodes, and terminals. The Residential Gateway of the house could be the best position for the WMC. Association point seems to be always the same. The WMC appears to be the best Association point for each incoming family member. The WMC is the best short address assigner, yet other WRCs can also do the job. The limitation of the maximum number of children for any WRC limits the applicability of the protocol. Characteristics of Wireless Home Service (2/3)

Characteristics of Wireless Home Service (3/3): 

Devices are moving. Reassociation should be avoided due to the fact that there can be heavy unnecessary association request traffic. The network address shall be the same for any position. Traffic Directions Every traffic from both sensor nodes and the mobile terminal is toward the WMC. The delivery of the information from the WMC to incoming family members and sensors requires fast proactive routing. Some wireless home services require QoS aspects In-Home Healthcare Service Gas Valve Shut Down Service Disassociation request before leaving the network will be very important for address space reusability. Characteristics of Wireless Home Service (3/3)

Overview of the WiBEEM Technology: 

Overview of the WiBEEM Technology A simple and robust protocol with small memory size Extremely long battery life enabled by synchronization over the mesh network via the use of scheduled beacons transmitted by the WMC and all of WRCs. Reliable data transfer from 250 Kbps to 16 Mbps. High-speed mobility supported upto 120 Km/hour. Prioritized/Parameterized QoS Supported. One-hop communication within 30 m and expandable to hundred meters via mesh network. Easy installation of sensors and routers due to wireless mesh connectivity Very low implementation cost

WiBEEM Protocol Stack: 

WiBEEM Protocol Stack Higher Layer WiBEEM NWK Layer WiBEEM MAC Layer WiBEEM Physical (PHY) Layer Security Network Message Broker Routing Management 2.4 GHz Radio (Ch.1) NLDE-SAP NLME-SAP MLME-SAP PLME-SAP PLDE-SAP MLDE-SAP Network Management 2.4 GHz Radio (Ch.2) 2.4 GHz Radio (Ch.3) 2.4 GHz Radio (Ch.16)

PHY Overview of the WiBEEM : 

PHY Overview of the WiBEEM Data Rate Each channel provides Min. 250 Kbps, and Max. 1 Mbps. Maximum 16 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 and 16-QAM at 2.4GHz with AMC 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 and ZigBee

PPDU Format : 

PPDU Format Preamble Sequence Start of Frame Delimiter Frame Length MPDU (MAC Protocol Data Unit) Octets: 4 1 1 SHR (Synchronization Header) PHR ( PHY Header ) PSDU (PHY Service Data Unit) PPDU (PHY Protocol Data Unit) 8 to 127 The transmission of largest PPDU packet requires 4.256 msec for the air interface. 133 × 8 × 4 µsec = 4.256 msec.

MAC Overview of the WiBEEM : 

MAC Overview of the WiBEEM Superframe consists of BOP, PQP, CAP, CFP and DSP. Multiple beacons in BOP are transmitted by WMC and all the WRCs, while WEDs do not transmit beacons. Low Power Consumption due to the Perfect Synchroni- zation all over the Network by using Beacon Scheduling Dynamic Channel Selection Network Topology Star and Peer-to-Peer Topology Cluster-tree Network Topology Beacon-enabled as well as Beaconless Mesh Topology 65,536 = 216 devices per MPID (Mesh Piconet ID) Data Security Support with AES-128 Security

WiBEEM Superframe Structure: 

WiBEEM Superframe Structure BOP CAP CFP DSP Beacon #1 SD (Superframe Duration) BI (Beacon Interval) BOP BOP = BTTSL × maxBeaconNumber [symbols] SD = aBaseSuperframeDuration × 2SO [symbols] = 960 × 2SO [symbols] BI = aBaseSuperframeDuration × 2BO [symbols] = 960 × 2BO [symbols] Beacon #1 Beacon #2 Beacon #n PQP PQP PQP = PQPL × aBaseDuration [symbols] CFP CFP = CFPL × aBaseDuration [symbols] BTTSL

Beacon Frame Format and Beacon Payload: 

Beacon Frame Format and Beacon Payload Frame Control Beacon Sequence Number Source Address Information Superframe Specification CFP Fields Pending Address Field Beacon Payload FCS 1 4/10 2 k m Variable 2 MHR (MAC Header) MSDU (MAC Service Data Unit) MFR (MAC Footer) Bits : 0-3 Beacon Order 4-7 Superframe Order 8-11 Reserved 12 Battery life Extension 13 PQP Enabled 14 PAN Coordinator 15 Association Permit Octets: 2 Octets: 1 Max Beacon Number 1 BTTSL 1 Depth 2 NAA 2 Child Short Address 2 Parent Short Address 2 LSV -ND 1 Child Device Type 1 My Profile ID 1 My BTTS 0/1 PQPL 2 LSV -WMC

Beacon Scheduling Done for 40 Nodes: 

39 38 37 21 22 23 24 25 26 27 28 29 30 31 32 33 35 36 34 20 19 18 1 2 3 4 5 6 7 8 9 WMC 10 11 12 13 14 16 17 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 CFP PQP DSP 1 2 3 4 5 6 7 8 9 10 12 11 13 14 15 16 1 2 3 4 5 6 7 10 11 8 9 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 BTTSL BTTS BOP CAP

NWK Overview of the WiBEEM : 

NWK Overview of the WiBEEM Network formation by passive and active scan Network growing support and easy network management Space 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 uses proactive routing WiBEEM can also adopt simplified AODV-like routing Network Message Broker High speed device mobility and QoS supported. Data fragmentation supported.

NWK Layer General Packet Format: 

NWK Layer General Packet Format Octets: 2 0/1 Frame Control 2 2 0/2 Target Address Origi- nator Address Max. Broadcast Hop Count Broadcast ID Number Routing Fields NWK Header Variable Frame Payload 2 TTL 0/1 Fragmen- tation ID Var Fragmen- tation Count Var Fragmen- tation Number 0/1 Fragmen- tation Length Bits : 0-1 Frame Type 2-5 Protocol Version 6 Discover Route 7 Fragmentation 9 Security 10-15 Reserved 8 Multicast Flag Fragmentation Fields NWK Payload

Advantages of WiBEEM Addressing : 

Advantages of WiBEEM Addressing No waste of 16-bit address spaces. Device discovery done when the address is granted. The concept of NAA (Next Address Available) allows the complete reuse of the 16-bit address space when the node has been disassociated. Address conflicts may happen when two nodes join in the network at the same time. Reasonable delay for resolving the address conflicts.

WiBEEM Routing: 

WiBEEM Routing The NAA-based addressing does not allow tree routing because of the non-systematic addressing mechanism. The tree routing, however, limits the applicability of the protocol drastically. The number of new devices to join in. Device mobility WiBEEM routing algorithm Proactive routing with routing tables Does not support Tree routing. WiBEEM adopts simplified AOVD-like reactive routing when the link failure occurs.

Slide21: 

Forward Introduction Chapter 1. Scope Chapter 2. Normative References Chapter 3. Terms, Definitions, and Abbreviations Chapter 4. Conformance Clauses Chapter 5. General Requirements Chapter 6. PHY Service Specifications Chapter 7. PPDU Formats Chapter 8. PHY Constants and PIB Attributes Chapter 9. General Radio Specifications Chapter 10. Adaptive Modulation Coding for High Rate Support Chapter 11. Adaptive Channel Aggregation Structure of the WiBEEM Part 1: PHY

Slide22: 

Structure of the WiBEEM Part 2: MAC Forward Introduction Chapter 1. Scope Chapter 2. Normative References Chapter 3. Terms, Definitions, and Abbreviations Chapter 4. Conformance Clauses Chapter 5. General Requirements Chapter 6. MAC Sublayer Service Specifications Chapter 7. MAC Frame Formats Chapter 8. MAC Command frames Chapter 9. MAC Constants and MIB Attributes Chapter 10. MAC Functional Descriptions Chapter 11. MAC Sublayer Security Suite Specifications Chapter 12. Message Sequence Charts

Slide23: 

Structure of the WiBEEM Part 3: NWK Forward Introduction Chapter 1. Scope Chapter 2. Normative References Chapter 3. Terms, Definitions, and Abbreviations Chapter 4. Conformance Clauses Chapter 5. General Descriptions Chapter 6. NWK Service Specifications Chapter 7. NWK Frame Formats Chapter 8. NWK Command frames Chapter 9. NWK Constants and NIB Attributes Chapter 10. NWK Functional Descriptions Chapter 11. NWK Security Suite Specifications

Slide24: 

Conclusions Introduced some Wireless Home Network Services. Presented WiBEEM technology for the energy efficient home network services Multiple beacons in one superframe, that are scheduled to avoid beacon conflicts. Real-time, efficient short address allocation based on NAA. Device mobility supported. Prioritized/Parameterized QoS supported. WiBEEM Protocol is a user-friendly technology for Wireless Home Network Services. Korea wishs to submit the WiBEEM technology as a multi-part NP to be standardized under SC25/WG1.