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Smart Grid Discussions – November 2010

Smart Grid Discussions – November 2010. Date: 2010-November-10. Abstract: NIST PAP#2 Report r6 recommended changes Other Smart Grid activities. Agenda Topics for the Week. Action Item Finalize change suggestions for the NIST PAP#2 Report Information Items SGIP update ITU Focus Group

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Smart Grid Discussions – November 2010

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  1. Smart Grid Discussions – November 2010 Date: 2010-November-10 Abstract: NIST PAP#2 Report r6 recommended changes Other Smart Grid activities Bruce Kraemer, Marvell

  2. Agenda Topics for the Week Action Item • Finalize change suggestions for the NIST PAP#2 Report Information Items • SGIP update • ITU Focus Group • UK Consultation • March Tutorial topics/speakers Bruce Kraemer, Marvell

  3. Report Changes Bruce Kraemer, Marvell

  4. July 28, 2010 Draft 0.5 August 4, 2010 Call for Input to Section 6 September 15, 2010 End of draft 0.5 review period September 16, 2010 SGIP face-to-face, St Louis Tentative PAP 2 meeting NIST Timeline re-confirmed Nov 4 September 30, 2010 Release of draft 0.6 October 29, 2010 End of draft 0.6 review period November 4, 2010 OpenSG meeting, Miami Tentative PAP 2 meeting SGIP face-to-face, Chicago PAP 2 meeting December 3, 2010 Release of Version 1 Bruce Kraemer, Marvell

  5. PAP#2 Report was updated Oct 1 • http://collaborate.nist.gov/twiki-sggrid/pub/SmartGrid/PAP02Wireless/NIST_Priority_Action_Plan_2_r06.pdf Bruce Kraemer, Marvell

  6. NIST PAP#2 Report v6 – Section 4 4.1 Technology Descriptor Headings To be able to describe wireless technology a set of characteristics were identified and organized into logical groups. The group titles are listed below. • 1. Link Availability • 2. Data/Media Type Supported • 3. Coverage Area • 4. Mobility • 5. Data Rates • 6. RF Utilization • 7. Data Frames & Packets • 8. Link Quality Optimization • 9. Radio Performance Measurement & Management • 10. Power Management • 11. Connection Topologies • 12. Connection Management • 13. QoS & Traffic Prioritization • 14. Location Characterization • 15. Security & Security Management • 16. Radio Environment • 17. Intra-technology Coexistence • 18. Inter-technology Coexistence • 19. Unique Device Identification • 20. Technology Specification Source • 21. Deployment Domain Characterization • 22. Exclusions Bruce Kraemer, Marvell

  7. IEEE 802 contributed a number of suggestions on how to change the NIST PAP#2 Report r6. These were contained in documents 1210 and 1209 and 1316.https://mentor.ieee.org/802.11/dcn/10/11-10-1209-00-0000-comment-set-1-on-pap-2-report-r6.dochttps://mentor.ieee.org/802.11/dcn/10/11-10-1210-01-0000-comment-set-2-on-pap-2-report-r6.ppt Bruce Kraemer, Marvell

  8. Material for this meeting Section 4 edited Section 4 edited Bruce Kraemer, Marvell

  9. Comment #01 • Section 4.2.1.3 talks about Coverage Area. It is important to discuss coverage in conjunction with data rates and link margin for example, in order to avoid associations between inconsistent pieces of information, e.g., citing the largest coverage area achievable by a given technology along with the highest data rate achievable by the technology is incorrect – generally the two have a reverse relationship and the highest coverage is achievable at the lowest data rate. • Agreed to text change: • Add the following text at the end of Section 4.2.1.3: When comparing coverage areas between different technologies, it is important to take into account the link budgets used in the coverage computation. Note that the largest coverage area achievable by a specific technology typically requires transmission at the lowest data rate used by that technology. Bruce Kraemer, Marvell

  10. Comment #02a • Section 4.2.1.4 talks about Mobility. It would be useful to mention the data rates achievable at various mobility levels to avoid assumptions that mobile devices can communicate at the highest data rates used by a specific technology. • Agreed to text change: • Add the following text at the end of Section 4.2.1.4: Comparisons between the capabilities of different mobile technologies have to take into account the maximum data rate achievable at each mobility level -- mobile devices may not be able to communicate at the highest available data rates when moving at high speeds. Bruce Kraemer, Marvell

  11. Comment #03 • Section 4.2.1.5 talks about Data Rates. • Agreed text change: • Add the following text at the end of Section 4.2.1.5: Additional factors to consider when discussing data rates: • Throughput must be considered in conjunction with packet size, coverage range and rate of mobility (if any). • It is important to distinguish between unicast, multicast and broadcast rates, as they may not be the same for a given wireless technology. • Throughput depends on medium access scheduling, including the capability to provide block transmissions (whereby multiple data packets can be sent in succession with minimum or no individual medium access operations per packet except before the first packet is sent), and/or block acknowledgements (whereby a single acknowledgement packet can acknowledge multiple preceding data packets). The capability and flexibility to optimize block transmissions and acknowledgements can have a significant effect on GoodPut. • The use of rate adaptation mechanisms, where the data rate on a link is modified when the quality of the link changes. Bruce Kraemer, Marvell

  12. Add these definitions to Section 2.2 Broadcast • Broadcast is a form of message transmission where a message is sent from a single source to all potential receiving nodes. Multicast • Multicast is a form of message transmission where a message is sent from a single source to a subset of all potential receiving nodes. (The mechanism for selecting the members of the subset is not part of this definition.) Unicast • Unicast is a form of message transmission where a message is sent from a single source is sent to a single receiving node. Bruce Kraemer, Marvell

  13. Comment #04 • Section 4.2.1.6 talks about RF utilization. • Agreed text change: • Add the following text at the end of Section 4.2.1.6: • Consider the power level regulations for the different channels used by a particular technology. • Consider the impact of Dynamic Frequency Selection (DFS) regulations on the channels used by a particular technology, e.g., certain UNII channels are subject to DFS regulation which requires wireless devices to change channel when they detect the use of radar on their current channel. Bruce Kraemer, Marvell

  14. Comment #05 • Section 4.2.1.7 talks about Data Frames and Packets. It is important to consider frame duration in conjunction with data rate and size of the frame. Also, we need to consider multicast and broadcast frames in addition to unicast frames. • Agreed text change: • Modify item “a)” in Section 4.2.1.7 as follows: • What is the maximum frame duration for a unicast, multicast and broadcast frame respectively, and what are the corresponding frame size and data rate at which each type of frame was sent? • Modify item “b)” in Section 4.2.1.7 as follows: • What is the maximum packet size that can be sent in one unicast, multicast and broadcast radio frame respectively? • Modify item “c)” in Section 4.2.1.7 as follows: • Does the radio system support segmentation of unicast, multicast and broadcast packets respectively, when the payload size exceeds the capacity of one radio frame? Bruce Kraemer, Marvell

  15. Comment #06 • Section 4.2.2.4 talks about Connection Topologies. The Bus and Ring topology need to be removed, they are not wireless topologies. One way to characterize wireless topologies is as single hop and multi-hop (statically configured or mesh), and wireless links as point-to-point, point-to-multipoint, and omnidirectional. We need to add figures that correspond to the text we end up with. • Agreed text change: • Remove the Bus and Ring figures • Replace the current text in Section 4.2.2.4 with the following: Wireless network topologies can be divided into single hop and multi-hop, where a multi-hop topology can be statically configured, or can be dynamic and self-forming, e.g., a mesh. A wireless link can be point-to-point, point-to-multipoint, or broadcast. • Add the definitions on the following 4 slides to Section 2.2 Bruce Kraemer, Marvell

  16. Hop Definitions • Proposed PAP2 Guidelines Document Definitions • Hop: The term hop is used to signify a link between a pair of devices that a frame or packet needs to traverse to reach one device from the other. • Single-Hop Network: A single-hop network is one in which devices can only communicate with each other directly, e.g., over a single link (hop), and do not have the capability to forward traffic on each other’s behalf. • Multi-Hop Network: A multi-hop network is one in which devices have the capability to forward traffic on each other’s behalf and can thus communicate along paths composed of multiple links (hops). Bruce Kraemer, Marvell

  17. Configuring Definition • Statically Configured Multi-Hop Network: A multi-hop network can be statically configured, such that each node’s forwarding decisions are dictated by configuration. • Dynamic and Self-Configuring Multi-Hop Network: A multi-hop network can be dynamic and self-configuring, such that network devices have the ability to discover (multi-hop) forwarding paths in the network and make their own forwarding decisions based on various pre-configured constraints and requirements, e.g., lowest delay or highest throughput. Bruce Kraemer, Marvell

  18. MESH Definition • Mesh Network: A mesh network is a dynamic self-configuring network composed of devices that can forward traffic on each other’s behalf, have the ability to discover (multi-hop) forwarding paths in the network and make their own forwarding decisions based on various pre-configured constraints and requirements, e.g., lowest delay or highest throughput. Bruce Kraemer, Marvell

  19. Comment #07 • Section 4.2.2.5 talks about Connection Management. The section needs to mention what aspects of “connection management” can be used to compare different wireless technologies. For example, we can evaluate the latency to join a network, available security mechanisms employed when joining a network, and overhead to join the network (number of control packets exchanged). Perhaps section titles such as “Network Participation Mechanisms” or “Joining the Network” are more descriptive of the content of this section. Bruce Kraemer, Marvell

  20. Comment 07b Add the following text at the end of Section 4.2.2.5: • It is important to evaluate: • the time it takes for a device to join a particular network, and the overhead required to do so • the time and overhead required to rejoin the network when a device becomes disconnected from the network • the overhead required to maintain membership in the network after the initial admission into the network • the overhead associated with optimizing connectivity, e.g., in mesh-based topologies. Bruce Kraemer, Marvell

  21. Comment #08 • Section 4.2.3.2 talks about Location Characterization. It seems like many of the techniques applicable to this section are not technology-specific but implementation-specific and as such can be incorporated across different wireless technologies even if they are not currently incorporated into the products of a specific wireless technology. It would be helpful to make the distinction between technology-specific properties and product-specific properties in the text. • Agreed text change: • Add the following text at the end of Section 4.2.3.2: • It is important to distinguish between technology-specific mechanisms for location characterization and mechanisms that are applicable across technologies or communication topologies, which can easily be added to products that may not currently support them. Bruce Kraemer, Marvell

  22. Comment #09 • A category that is missing from Section 4 is one that characterizes the deployment complexity of each technology. • Agreed text change: Add the following text after Section 4.2.4.1: • 4.2.5 Group 22: Deployment Complexity • It is important to evaluate the complexity of: • installation and maintenance of a given wireless system • integration with other, possibly existing, networks • expansion of the wireless network coverage over time. Bruce Kraemer, Marvell

  23. General Comment #10 • It would be helpful to have some tables and text summarizing the information in Section 5, and to move a lot of the discussions/derivations to an appendix. Otherwise, the message/conclusions/recommendations get lost in the text. Bruce Kraemer, Marvell

  24. General Comment #11 Section 4.2.1.2 (p. 24) talks about voice and video traffic over the smart grid. We need more use cases motivating why we would want to have voice and video traffic over the smart grid network. The current set of use cases supplied by OpenSG does not currently contain this service. The only video example given in the text is one of surveillance of affected outage areas. It would seem that voice and video might be of lower priority during outages, e.g., caused by disasters or weather-related events, since the network would require a high degree of availability for its regular functions. In addition, surveillance is generally part of the public safety infrastructure and there is spectrum allocated for such use so I am not convinced that we should be discussing this kind of application in the context of the smart grid. • Applications such as voice and video have requirements that even broadband network providers are struggling with (wireless and landline) and making them part of the smart grid infrastructure requires significant justification. Bruce Kraemer, Marvell

  25. General Comment #12 • Link Availability in Section 4.2.1.1 does not appear to be consistently calculated for the various candidate various radio technologies, nor did majority of the technology candidates describe the method used to calculate availability. • The current description of the characteristic does not match the calculation. • Both of these issues need to be resolved before progressing to completion of Sections 6 & 7. • “The technology “Operating Point” chosen is presumably chosen recognizing that achieving a low failure rate is desirable.” • Agreed text change: Change this sentence to • “The technology “Operating Point” is chosen to achieve a low failure rate and is an outcome of deployment flexibility & strategy.” Bruce Kraemer, Marvell

  26. Comment #13 Para 2 Recommended change • Reword the preface to incorporate the idea that SG application requirements evolve over time, yielding to experience rather than remain locked in 1989 or 1999 or 2009 economics. • Smart Grid application requirements must be defined with enough specificity to quantitatively define communications traffic and levels of performance over the lifetime of the applications.  Applications requirements must be combined with as complete a set of management and security requirements for the life-cycle of the equipment.  The decisions to apply wireless for any given set of applications can then be based on expected performance and costs over the projected useful lifetimes of the spectrum and equipment.  Bruce Kraemer, Marvell

  27. Matrix Disclaimer text – Robert Russell • Blank or omitted responses could indicate questions or clarifications which were added to this matrix after the responses were received from the particular SDO to the original matrix. • Additional questions or points of clarification developed through the course of completing this document which may result in a blank or non- response from a particular respondent and do not reflect on the respondent's ability or lack of ability to support the item. • Blank responses reflect clarifications to question asked in this document made after information was already received from earlier versions. • A blank response indicates a question or clarification ammended to this document to which the respondent has not had the opportunity to respond to. Bruce Kraemer, Marvell

  28. Matrix Disclaimer text • Blanks in rows marked with # indicate technology questions which were added to this matrix after the responses were received from the particular SDO to the original matrix. Bruce Kraemer, Marvell

  29. MESH Disclaimer text • After the responses were received from the SDO to the original mesh question the following definition for mesh was added. Bruce Kraemer, Marvell

  30. Add these definitions to Section 2.2 Broadcast • Broadcast is a form of message transmission where a message is sent from a single source to all potential receiving nodes. Multicast • Multicast is a form of message transmission where a message is sent from a single source to a subset of all potential receiving nodes. (The mechanism for selecting the members of the subset is not part of this definition.) Unicast • Unicast is a form of message transmission where a message is sent from a single source to a single receiving node. Bruce Kraemer, Marvell

  31. Hop Definitions • Proposed PAP2 Guidelines Document Definitions • Hop: The term hop is used to signify a link between a pair of devices that a frame or packet needs to traverse to reach one device from the other. • Single-Hop Network: A single-hop network is one in which devices can only communicate with each other directly, e.g., over a single link (hop), and do not have the capability to forward traffic on each other’s behalf. • Multi-Hop Network: A multi-hop network is one in which devices have the capability to forward traffic on each other’s behalf and can thus communicate along paths composed of multiple links (hops). Bruce Kraemer, Marvell

  32. Configuring Definition • Statically Configured Multi-Hop Network: A multi-hop network can be statically configured, such that each node’s forwarding decisions are dictated by configuration. • Dynamic and Self-Configuring Multi-Hop Network: A multi-hop network can be dynamic and self-configuring, such that network devices have the ability to discover (multi-hop) forwarding paths in the network and make their own forwarding decisions based on various pre-configured constraints and requirements, e.g., lowest delay or highest throughput. Bruce Kraemer, Marvell

  33. MESH Definition • Mesh Network: A mesh network is a dynamic self-configuring network composed of devices that can forward traffic on each other’s behalf, have the ability to discover (multi-hop) forwarding paths in the network and make their own forwarding decisions based on various pre-configured constraints and requirements, e.g., lowest delay or highest throughput. X Bruce Kraemer, Marvell

  34. MESH Definition • Mesh Network: A mesh network is a network composed of devices that can forward traffic on each other’s behalf, have the ability to discover (multi-hop) forwarding paths in the network and make their own forwarding decisions based on various pre-configured constraints and requirements, e.g., lowest delay or highest throughput. option Bruce Kraemer, Marvell

  35. Matrix Disclaimer text • Blanks in rows marked with # indicate technology questions which were added to this matrix after the responses to the original matrix were received from the particular SDO. X Bruce Kraemer, Marvell

  36. Completely inter-connected via nearest neighbor • Star topology Bruce Kraemer, Marvell

  37. Completely inter-connected via nearest neighbor • Representation of mesh network • Partially complete example of fully inter-connected network Bruce Kraemer, Marvell

  38. A C B Nodes A,B,C capable of forwarding or relay X Y • Completely inter-connected via nearest neighbor • Representation of mesh network • Partially complete example of fully inter-connected network Bruce Kraemer, Marvell

  39. Symmetric, Partially complete example of fully inter-connected network (Acyclic diagraph?) • Distorted, Partially complete example of fully inter-connected network • Path reduced • Representation of mesh network Bruce Kraemer, Marvell

  40. MESH Definition • Mesh Topolgy: A mesh topology is a multi-hop network that contains multiple connection paths between some or all nodes. • Mesh Topology: A mesh topology is a set of nodes that contains multiple connection paths between some or all nodes. Bruce Kraemer, Marvell

  41. Updated Definitions • 4.2.2.4 Group 11: Connection Topologies • Radio systems may be designed to use one or more connection topology. • Wireless network topologies can be characterized as being single hop or multi-hop. Multi-hop topology can be statically configured, or can be dynamically configured and self-forming. • A mesh network is a multi-hop network that contains multiple connection paths between nodes. Bruce Kraemer, Marvell

  42. Mesh Disclaimer text • The original question in the Group 11 “Connection Topologies” portion of the matrix to which SDOs responded asked if “mesh” was supported. There was no definition of “mesh” provided. • After the responses were received it was determined that a definition should have been provided to normalize responses. The following definition for mesh was added. • Mesh Network: A mesh network is a multi-hop network that contains multiple connection paths between nodes. Bruce Kraemer, Marvell

  43. Hop Disclaimer text • The original question in the Group 11 “Connection Topologies” portion of the matrix to which SDOs responded did not ask if hop connections were supported. • After the responses were received the following definition for hop connections were added. • Single-Hop Network: A single-hop network is one in which devices can only communicate with each other directly, e.g., over a single link (hop), and do not have the capability to forward traffic on each other’s behalf. • Multi-Hop Network: A multi-hop network is one in which devices have the capability to forward traffic on each other’s behalf and can thus communicate along paths composed of multiple links (hops). • Statically Configured Multi-Hop Network: A multi-hop network can be statically configured, such that each node’s forwarding decisions are dictated by configuration. • Dynamic and Self-Configuring Multi-Hop Network: A multi-hop network can be dynamic and self-configuring, such that network devices have the ability to discover (multi-hop) forwarding paths in the network and make their own forwarding decisions based on various pre-configured constraints and requirements, e.g., lowest delay or highest throughput. Bruce Kraemer, Marvell

  44. xcast Disclaimer text • The original question in the Group 7 “Data Frames and Packets” portion of the matrix to which SDOs responded assumed a unicast mode was used and did not ask for characterization using unicast, multicast and broadcast modes nor did it ask if these modes were supported. • After the responses were received the following definitions for casting modes were added. Broadcast • Broadcast is a form of message transmission where a message is sent from a single source to all potential receiving nodes. Multicast • Multicast is a form of message transmission where a message is sent from a single source to a subset of all potential receiving nodes. (The mechanism for selecting the members of the subset is not part of this definition.) Unicast • Unicast is a form of message transmission where a message is sent from a single source to a single receiving node. Bruce Kraemer, Marvell

  45. 16m matrix revision Bruce Kraemer, Marvell

  46. July 2010 Smart Grid Tutorial Bruce Kraemer, Marvell

  47. Other activities Bruce Kraemer, Marvell

  48. Agenda Topics for the Week Action Item • Finalize change suggestions for the NIST PAP#2 Report • Information Items • SGIP update • OpenSG update • P2030 update • ITU Focus Group • March Tutorial topics/speakers Bruce Kraemer, Marvell

  49. Smart Energy Projects • Bluetooth Smart Energy • CEN, CENELEC, ETSI Focus Group on standards for the Smart Grid • European Commission Task Force on Smart Grids • EUTC, ICT4SDG (European Utilities Telecom Council, ICT for Smart Distributed Generation) • GMC (Grid Modernization Collaborative) • GWAC (GridWise Architecture Council) • IEC, Strategic Group 3 on Smart Grid • IEEE Smart Grid Initiative • IETF • ISO/IEC JTC 1 SWG Smart Grid • ITU-T FG Smart (Focus Group Smart Grid) • ITU-T Study Groups 5 and 15 • KSGA (Korea Smart Grid Association) • KSGI (Korea Smart Grid Institute) • Next Generation Energy Study Group, Japan • NIST Smart Grid Interoperability Standards Project • OASIS Blue Initiative • SEESGEN-ICT (Supporting Energy Efficiency in Smart GENeration grids through ICT) • SGA (Smart Grid Australia) • SGCC (State Grid Corporation of China) • SIP Forum Smart Grid Special Interest Group • UCA IUG OpenSG (UCA International Users Group, Open Smart Grid) • U.S. Department of Energy, OE • ZigBee Alliance Smart Energy Bruce Kraemer, Marvell

  50. Agenda Topics for the Week Action Item • Finalize change suggestions for the NIST PAP#2 Report • Information Items • SGIP update • OpenSG update • P2030 update • ITU Focus Group • March Tutorial topics/speakers Bruce Kraemer, Marvell

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