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WiBEEM Technology for Wireless Home Network Services

Introducing the WiBEEM protocol for wireless home network services, enabling power saving, multiple beacons in one superframe, and space-efficient address allocations. This solution supports high-speed mobility and QoS, making it ideal for various home services like healthcare, appliance control, and internet access.

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WiBEEM Technology for Wireless Home Network Services

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  1. WiBEEM Technology for Wireless Home Network Services SC25/WG1 N1271

  2. 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 Contents

  3. 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

  4. Healthcare Services and Wireless Terminal • Wireless Terminal • Wireless Healthcare Watch WiBEEM

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

  6. 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)

  7. 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)

  8. 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)

  9. 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 Overview of the WiBEEM Technology

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

  11. 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-QPSKof Low-Rate WPAN and ZigBee PHY Overview of the WiBEEM

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

  13. 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 MAC Overview of the WiBEEM

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

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

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

  17. 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 Overview of the WiBEEM

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

  19. 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. Advantages of WiBEEM Addressing

  20. 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.

  21. Structure of the WiBEEM Part 1: PHY • 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

  22. 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

  23. 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

  24. 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.

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