doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 1 Comments to WS coexistence draft PAR Notice: This document has been prepared to assist IEEE 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. Date: Authors:

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 2 Abstract This contribution raises some comments to the WS coexistence PAR described in and proposes the way to resolve these comments

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 3 Title In general, we feel comfortable with the title in –Standard for TV White Space Coexistence Mechanisms We propose one more option to consider with differnet wording –IEEE Standard for coexistence mechanisms for operation in the white spaces of the TV bands

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 4 Scope (1/5) Scope in –The standard will specify mechanisms for coexistence amongst dissimilar TV Band Devices and dissimilar or independently operated networks operating in the US FCC defined TV White Space Bands.

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 5 Scope (2/5) Comments –From this scope it is not clear whether “mechanisms” will be specific to particular radio interface specification or they will be media access independent It is better to specify this in the scope We believe these mechanisms should be media access independent –From this scope it is not clear whether only 802 wireless networks are considered or non-802 wireless networks are also considered It is better to specify this in the scope Actually, similar statement is in Need in

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 6 Scope (3/5) Comments (continued) –When several secondary networks operate in white space, there is a question on how to enable fair use of this white space by these networks We believe is perfect place to address this question So, we propose to include this in the scope Actually, this corresponds to “etiquette” in Explanatory Notes in –Coexistence between secondary networks is only one coexistence scenario Another important coexistence scenario is coexistence between primary and secondary networks We propose to include this scenario to the scope

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 7 Scope (4/5) Comments (continued) –This scope is limited to USA market only We do not see any strong rationale to limit the standard only for the USA If USA is mentioned in the scope, it is still possible to define a standard for operation in the USA only

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 8 Scope (5/5) Proposed scope –This standard defines extensible media access independent mechanisms for 802 and non-802 wireless networks operating as secondary users in TV white space to facilitate coexistence between secondary users, fair use of white space by secondary users, and enhanced protection of primary users from harmful interference from secondary users.

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 9 Purpose (1/3) Purpose in –The purpose of the standard is to enable the family of IEEE 802 Air Interface Standards to most effectively use TV White Space by providing standard coexistence mechanisms. This standard addresses coexistence for IEEE 802 networks and may also be useful for non IEEE 802 networks in TV White Space.

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 10 Purpose (2/3) Comments –We believe that purpose should mention three key points proposed for the scope in the previous slides Coexistence between secondary systems Enhanced protection of primary systems Fair use of white spaces –Also, it is better to mention what are the economical benefits for manufacturers and consumers of “TV WS Coexistence” equipment

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 11 Purpose (3/3) Proposed purpose –This standard facilitates cost-effective and multi-vendor production and operation of a system which will enable multiple 802 and non- 802 wireless secondary networks to coexist in white spaces of TV bands, including coexistence among these networks and enhanced protection of primary users. Also, such system will provide mechanisms enabling efficient and fair use of white spaces of TV bands by multiple secondary networks.

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 12 Need for the project (1/3) Need for the project in –Existing IEEE 802 standards groups are working to develop modifications of their standards to comply with the regulatory rules for accessing TV White Space. Mechanisms that allow these revised standards to coexist are needed. The work proposed here will result in standard overlay mechanisms that allow these different 802 standards to coexist in TV White Space. It will also seek to allow coexistence with other well established non IEEE 802 wireless standards.

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 13 Need for the project (2/3) Comments –We believe that need for the project should mention three key points proposed for the scope in the previous slides Coexistence between secondary systems Enhanced protection of primary systems Fair use of white spaces –Also we believe that wording should be stronger

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 14 Need for the project (3/3) Proposed need for the project –Given that USA FCC regulations has allowed secondary operation in white spaces of TV bands and other countries regulatory bodies are considering their actions regarding TV white space, it can be expected that many 802 and non-802 wireless networks will be operating in white spaces of TV bands in the future. Correspondingly, questions of coexistence in white spaces and fair use of white spaces will arise. The proposed standard will provide mechanisms addressing these questions. Also, the proposed standard will provide mechanisms for enhanced protection of primary users from harmful interference from secondary users.

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 15 Standards or projects with a similar scope (1/3) Text in –It appears that there may be related work going on in The TV White Space Data Base Group, 3GPP, OMA, and SCC 41. These will be explored and if there is material that would be valuable for this effort, it will be incorporated.

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 16 Standards or projects with a similar scope (2/3) Comments –Typically, more specific information is expected in Section 7.1 of the PAR

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 17 Standards or projects with a similar scope (3/3) Proposal –It is proposed to briefly mention the following standards and projects that have similar scope IEEE Standard P P1900.4a

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 18 Explanatory notes (1/3) Text in –The coexistence mechanisms that will be standardized will address the following and related areas: Discovery … Connection … Logical mechanism… Etiquette… –These mechanisms will include ways to assure that they are correctly functioning. –The term “dissimilar networks”…

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 19 Explanatory notes (2/3) Comments –Our concern is that the text in limits the scope of the project by describing specific mechanisms –We do not see any strong rational for such limitation at this early stage, when project has not started yet

doc.: IEEE tvws Submission September 2009 Stanislav Filin et al, NICTSlide 20 Explanatory notes (3/3) Proposal –We believe it is better to delete the current text from the explanatory notes