1. doc.: IEEE 802.15-11/0287r0 Submission March 2011 Slide 1Hyunduk Kang, et al, ETRI 802.19.1 Overview and Issues Notice: This document has been prepared to assist IEEE 802.19. 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 grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.19. Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures, including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the TAG of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.19 TAG. If you have questions, contact the IEEE Patent Committee Administrator at.http:// ieee802.org/guides/bylaws/sb-bylaws.pdfpatcom@ieee.org Date: 2011-03-17 Authors:

2. doc.: IEEE 802.15-11/0287r0 Submission Notice Some parts of this presentation may include ETRI’s view which could be different from other participants’ view on the 802.19.1 standard March 2011 Hyunduk Kang, et al, ETRISlide 2

3. doc.: IEEE 802.15-11/0287r0 Submission Contents History and status Title, scope, and purpose System requirement System architecture Reference model Technical issues March 2011 Hyunduk Kang, et al, ETRISlide 3

4. doc.: IEEE 802.15-11/0287r0 Submission History and status 802.19 TG1 (TVWS coexistence) launched on Jan. 2010 802.19 TG1 announced SDD (system design document) and call for proposals on Mar. 2010 7 proposals are submitted and discussed during the F2F meeting on Sep. and Nov. 2010 A merged proposal is now under developing to create a baseline document for the standard March 2011 Hyunduk Kang, et al, ETRISlide 4

5. doc.: IEEE 802.15-11/0287r0 Submission Title, scope, and purpose (1/2) Title: Standard for Information Technology - Telecommunications and Information Exchange Between Systems - Local and Metropolitan Area Networks - Specific Requirements - Part 19: TV White Space Coexistence Methods Scope: The standard specifies radio technology independent methods for coexistence among dissimilar or independently operated TV Band Device (TVBD) networks and dissimilar TV Band Devices. March 2011 Hyunduk Kang, et al, ETRISlide 5

6. doc.: IEEE 802.15-11/0287r0 Submission Title, scope, and purpose (2/2) Purpose: The purpose of the standard is to enable the family of IEEE 802 Wireless Standards to most effectively use TV White Space by providing standard coexistence methods among dissimilar or independently operated TVBD networks and dissimilar TVBDs. This standard addresses coexistence for IEEE 802 networks and devices and will also be useful for non IEEE 802 networks and TVBDs. March 2011 Hyunduk Kang, et al, ETRISlide 6

7. doc.: IEEE 802.15-11/0287r0 Submission Tentative outline and clause order Participants who submitted a proposal; –ETRI –LG Electronics –NICT –Nokia –Sony –AmeriSys –InterDigital March 2011 Hyunduk Kang, et al, ETRISlide 7

8. doc.: IEEE 802.15-11/0287r0 Submission System requirement March 2011 Hyunduk Kang, et al, ETRISlide 8 Control info. for reconfiguration External info. gathering and update Internal info. exchange External info. gathering and update Analyzing obtained info. Coexistence decision making Different topologies of CDM - Centralized - Distributed - Autonomous Security mechanism Coexistence mechanism Identification

9. doc.: IEEE 802.15-11/0287r0 Submission System architecture (1/3) The 802.19.1 system has three entities and five interfaces. March 2011 Hyunduk Kang, et al, ETRISlide 9

10. doc.: IEEE 802.15-11/0287r0 Submission System architecture (2/3) CE –enables all communication between TVBD network or device and coexistence manager that serves this TVBD network or device. CM –is responsible for coexistence decision making related to reconfiguration of TVBD networks or devices to solve coexistence problems between them. Different CMs may communicate with each other. –obtains all necessary information for this decision making. CM decisions are informed to TVBD networks or devices. –can calculate intra-CM neighbor TVBD networks or devices. March 2011 Hyunduk Kang, et al, ETRISlide 10

11. doc.: IEEE 802.15-11/0287r0 Submission System architecture (3/3) CDIS –is responsible for calculating neighbor TVBD networks or devices for CMs. –can calculate all neighbors or only inter-CM neighbors for a particular CM. –supports discovery of CMs by each other in order to open interfaces between them. The 802.19.1 system has two external entities –TVBD or TVBD network The device or network, which operates with unlicensed basis in the TV bands at locations where that TV bands are not being used by any incumbents, i.e., licensed services. –The TVWS database The regulatory database which provides list of allowed channels for TVBD networks or devices because they are occupied by incumbents. March 2011 Hyunduk Kang, et al, ETRISlide 11

12. doc.: IEEE 802.15-11/0287r0 Submission Reference model 802.19.1 entities are located on the application layer. Each 802.19.1 entity has one or more the following service access point (SAP): –COEX_SAP (Coexistence SAP): The SAP between the coexistence system entities, e.g., CE/CM/CDIS, and the TVBD network or device management entities, e.g., 802.11 SME, 802.22 NCMS. –COEX_TR_SAP (Coexistence Transport SAP): The SAP between coexistence system entities, e.g., CE/CM/CDIS, or between coexistence system entity and TVWS DB. March 2011 Hyunduk Kang, et al, ETRISlide 12

13. doc.: IEEE 802.15-11/0287r0 Submission Technical issues Coexistence scenario Coexistence mechanisms Topology related to coexistence decision making Neighbor discovery Frequency domain descriptor/unit Channel classification March 2011 Hyunduk Kang, et al, ETRISlide 13

14. doc.: IEEE 802.15-11/0287r0 Submission Coexistence scenario (1/2) Individual TV channel use Shared TV channel use –By TVBD networks of the same type –By TVBD networks of the dissimilar type March 2011 Hyunduk Kang, et al, ETRISlide 14

15. doc.: IEEE 802.15-11/0287r0 Submission Coexistence scenario (2/2) In the individual TV channel use, TV channels are dynamically assigned to each TVBD network which use different TV channels. –So it is possible that non-overlapped TV channels are allocated to TVBD networks. –This guarantee co-channel-interference-free TV channel use and coexistence problem can be eliminated through a proper TV channel allocation. In shared TV channel use, two or more TVBD networks share the same TV channel. –If a TV channel is shared by the TVBD networks of the same type, self-coexistence mechanisms might be used to mitigate co-channel interference. –If a TV channel is shared by TVBD networks of the dissimilar type, inter-system coexistence mechanisms might be needed to mitigate co- channel interference. March 2011 Hyunduk Kang, et al, ETRISlide 15

16. doc.: IEEE 802.15-11/0287r0 Submission Coexistence mechanisms Operating channel selection mechanism –Step 1: Allocating a non-overlapped operating channel to each TVBD considering its neighbors in order to avoid co-channel interference –Step 2: Allocating the same operating channel to TVBD neighbors of the same type in order to take advantage of self-coexistence mechanism which may be provided by TVBD itself –Step 3: Allocating the same operating channel to TVBD neighbors of the dissimilar type. In this case, we need a co-channel sharing mechanism to solve co-channel interference between TVBD neighbors Co-channel sharing mechanism –Time, frequency, code, space March 2011 Hyunduk Kang, et al, ETRISlide 16

17. doc.: IEEE 802.15-11/0287r0 Submission Topology related to coexistence decision making Centralized –There is one master CM which has a number of slave CMs which are a neighbor of master CM. The master CM performs coexistence decision making and slave CMs follows it. Distributed –Among a number of neighbor CMs, each CM performs coexistence decision making based on negotiation with its neighbor CMs. Autonomous –Each TVBD network or device performs operating channel selection by itself, not controlled by CM March 2011 Hyunduk Kang, et al, ETRISlide 17

18. doc.: IEEE 802.15-11/0287r0 Submission Neighbor discovery (1/2) Two or more TVBDs are a neighbor if they interfere with each other given the same operating channel due to their geo-location, transmission range, interference range, and etc. –Intra-CM TVBD neighbor Two or more TVBDs are an intra-CM TVBD neighbor if they are a neighbor and registered to the same CM –Inter-CM TVBD neighbor Two or more TVBDs are an inter-CM TVBD neighbor if they are a neighbor and registered to the different CM Two or more CM are a neighbor if they have a TVBD which has a inter-CM TVBD neighbor March 2011 Hyunduk Kang, et al, ETRISlide 18

19. doc.: IEEE 802.15-11/0287r0 Submission Neighbor discovery (2/2) Two-level neighbor discovery –Intra-CM TVBD neighbor discovery at CM –Inter-CM TVBD neighbor discovery at CDIS March 2011 Hyunduk Kang, et al, ETRISlide 19 Neighbor CM Intra-CM TVBD neighbor Inter-CM TVBD neighbor Intra-CM TVBD neighbor

20. doc.: IEEE 802.15-11/0287r0 Submission Frequency domain descriptor/unit Basic resource unit for frequency domain that interacts between 802.19.1 system and TVBD networks or devices Two possibilities –TV channel –Center frequency and bandwidth March 2011 Hyunduk Kang, et al, ETRISlide 20 TV channel Resource Bandwidth center freq.

21. doc.: IEEE 802.15-11/0287r0 Submission Channel classification A general description of TV channel status for all TVBD networks or devices using channel set –7 channel sets –11 event for channel set transition March 2011 Hyunduk Kang, et al, ETRISlide 21

22. doc.: IEEE 802.15-11/0287r0 Submission References [1] P802.19.1PAR [2] System design document: DCN 19-10/0055r3 Proposals and all other documents are available on mentor, https://mentor.ieee.org/802.19/documents March 2011 Hyunduk Kang, et al, ETRISlide 22