1、 Sponsored by the LAN/MAN Standards Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA 10 May 2012 IEEE Computer Society IEEE Std 802.21b-2012(Amendment to IEEE Std 802.21-2008as amended byIEEE Std 802.21a-2012) IEEE Standard for Local and metropolitan area networks Part 21: Media Independent
2、Handover Services Amendment 2: Extension for Supporting Handovers with Downlink Only Technologies Copyright 2012 IEEE. All rights reserved. iIEEE Standard for Local and metropolitan area networks Part 21: Media Independent Handover Services Amendment 2: Extension for Supporting Handovers with Downli
3、nk Only TechologiesSponsorLAN/MAN Standards Committeeof theIEEE Computer SocietyApproved 29 March 2012IEEE-SA Standards BoardIEEE Std 802.21b-2012(Amendment to IEEE Std 802.21-2008as amended byIEEE Std 802.21a-2012)ii Copyright 2012 IEEE. All rights reserved.Abstract: Extensions to IEEE Std 802.21-2
4、008 for handovers with downlink only technologies is discussed in the amendment. Keywords: broadcast, downlink only, IEEE 802.21, IEEE 802.21b, media independent handover (MIH) The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2012 by t
5、he Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 10 May 2012. Printed in the United States of America. IEEE and 802 are registered trademarks in the U.S. Patent +1 978 750 8400. Permission to photocopy portions of any individual standard for educational class
6、room use can also be obtained through the Copyright Clearance Center.iv Copyright 2012 IEEE. All rights reserved.Notice to usersLaws and regulationsUsers of IEEE Standards documents should consult all applicable laws and regulations. Compliance with the provisions of any IEEE Standards document does
7、 not imply compliance to any applicable regulatory requirements. Implementers of the standard are responsible for observing or referring to the applicable regulatory requirements. IEEE does not, by the publication of its standards, intend to urge action that is not in compliance with applicable laws
8、, and these documents may not be construed as doing so.CopyrightsThis document is copyrighted by the IEEE. It is made available for a wide variety of both public and private uses. These include both use, by reference, in laws and regulations, and use in private self-regulation, standardization, and
9、the promotion of engineering practices and methods. By making this document available for use and adoption by public authorities and private users, the IEEE does not waive any rights in copyright to this document.Updating of IEEE documentsUsers of IEEE Standards documents should be aware that these
10、documents may be superseded at any time by the issuance of new editions or may be amended from time to time through the issuance of amendments, corrigenda, or errata. An official IEEE document at any point in time consists of the current edition of the document together with any amendments, corrigen
11、da, or errata then in effect. In order to determine whether a given document is the current edition and whether it has been amended through the issuance of amendments, corrigenda, or errata, visit the IEEE-SA Website or contact the IEEE at the address listed previously. For more information about th
12、e IEEE Standards Association or the IEEE standards development process, visit the IEEE-SA Website.ErrataErrata, if any, for this and all other standards can be accessed at the following URL: http:/standards.ieee.org/findstds/errata/index.html. Users are encouraged to check this URL for errata period
13、ically.Copyright 2012 IEEE. All rights reserved. vPatentsAttention is called to the possibility that implementation of this standard may require use of subject matter covered by patent rights. By publication of this standard, no position is taken by the IEEE with respect to the existence or validity
14、 of any patent rights in connection therewith. If a patent holder or patent applicant has filed a statement of assurance via an Accepted Letter of Assurance, then the statement is listed on the IEEE-SA Website http:/standards.ieee.org/about/sasb/patcom/patents.html. Letters of Assurance may indicate
15、 whether the Submitter is willing or unwilling to grant licenses under patent rights without compensation or under reasonable rates, with reasonable terms and conditions that are demonstrably free of any unfair discrimination to applicants desiring to obtain such licenses.Essential Patent Claims may
16、 exist for which a Letter of Assurance has not been received. The IEEE is not responsible for identifying Essential Patent Claims for which a license may be required, for conducting inquiries into the legal validity or scope of Patents Claims, or determining whether any licensing terms or conditions
17、 provided in connection with submission of a Letter of Assurance, if any, or in any licensing agreements are reasonable or non-discriminatory. Users of this standard are expressly advised that determination of the validity of any patent rights, and the risk of infringement of such rights, is entirel
18、y their own responsibility. Further information may be obtained from the IEEE Standards Association.vi Copyright 2012 IEEE. All rights reserved.ParticipantsAt the time this amendment was submitted to the IEEE-SA for approval, the IEEE 802.21 Working Group had the following officers:Subir Das, ChairJ
19、uan Carlos Zuniga, Vice-chairDavid Cypher, Technical EditorAnthony Chan, SecretaryAt the time this amendment was submitted to sponsor ballot, Security in Media Independent Handover Task Group b had the following officers:Juan Carlos Zuniga, ChairAntonio de la Oliva Delgado, Vice ChairHongseok Jeon,
20、Technical EditorChristian Niephaus, SecretaryWhen the IEEE 802.21 Working Group approved this amendment, the Working Group had the following membership: Major contributions were recieved from the following individuals:Yoon Young AnClint ChaplinLidong ChenH. Anthony ChanSubir DasAntonio De la Oliva D
21、elgado Peretz FederJunghoon JeeHongseok JeonLee JinFarrokh KhatibiDapeng LiuMichael LynchRoger B. MarksPaul NikolichChristian NiephausYoshihiro OhbaChangmin ParkHyundo ParkCharlie PerkinsAjay RajkumarKaren RandallStephen ShellhammerAlbert VidalJuan Carlos ZunigaTeodor BuburuzanJohannes LessmannCathe
22、rine LivetMichelle PerrasCopyright 2012 IEEE. All rights reserved. viiThe following members of the balloting committee voted on this standard. Balloters may have voted for approval, disapproval, or abstention.When the IEEE-SA Standards Board approved this standard on 29 March 2012, it had the follow
23、ing membership:Richard H. Hulett, ChairJohn Kulick, Vice ChairRobert M. Grow, Past ChairJudith Gorman, Secretary*Member EmeritusAlso included are the following nonvoting IEEE-SA Standards Board liaisons:Richard DeBlasio, DOE RepresentativeMichael Janezic, NIST RepresentativeMichelle TurnerIEEE Stand
24、ards Senior Program Manager, Document DevelopmentLisa PerryIEEE Standards Program Manager, Technical Program DevelopmentGeorge BabutNancy BravinWilliam ByrdRadhakrishna CanchiH. Anthony ChanClint ChaplinKeith ChowCharles CookSubir DasAntonio De la Oliva DelgadoThomas DineenSourav DuttaRichard EdgarP
25、ieter-Paul GiesbertsReinhard GlogerRon GreenthalerRandall GrovesMichael GundlachDavid HunterIchirou IdaNoriyuki IkeuchiAtsushi ItoJunghoon JeeShinkyo KakuStuart KerryFarrokh KhatibiBrian KiernanYongbum KimBruce KraemerJoseph KwakPaul LambertJan-Ray LiaoGreg LuriMichael LynchElvis MaculubaWayne Mange
26、sRoger B. MarksGary MichelRonald MuriasMichael S. NewmanYoshihiro OhbaSatoshi OyamaVenkatesha PrasadKaren RandallMaximilian RiegelRobert RobinsonBenjamin RolfeRichard RoyRandall SafierPeter SaundersonBartien SayogoJohn ShortGil ShultzKapil SoodThomas StaraiRene StruikWalter StrupplerJun Ichi TakadaS
27、teven TildenMark-Rene UchidaDmitri VarsanofievPrabodh VarshneyJohn VergisLei WangStanley WangHung-Yu WeiOren YuenJuan Carlos ZunigaSatish AggarwalMasayuki Ariyoshi Peter BalmaWilliam Bartley Ted Burse Clint Chaplin Wael Diab Jean-Philippe Faure Alexander Gelman Paul Houz Jim HughesYoung Kyun KimJose
28、ph L. Koepfinger* David J. Law Thomas Lee Hung Ling Oleg Logvinov Ted OlsenGary Robinson Jon Walter Rosdahl Mike Seavey Yatin TrivediPhil Winston Yu Yuanviii Copyright 2012 IEEE. All rights reserved.IntroductionThis amendment specifies the enhancements to IEEE Std 802.21-2008 to enable the optimizat
29、ion of handovers between IEEE 802.21 supported technologies and downlink only technologies such Digital Video Broadcasting (DVB), Terrestrial Digital Multimedia Broadcasting (T-DMB) and Advanced Television Systems Committee - Mobile/Handheld (ATSC-M/H).This introduction is not part of IEEE Std 802.2
30、1b-2012, IEEE Standard for Local and metropolitan area networksPart 21: Media Independent Handover ServiceAmendment 2: Extension for Supporting Handovers with Downlink Only Technologies.Copyright 2012 IEEE. All rights reserved. ixContents1. Overview 21.3 General. 21.5 Media independence 23. Definiti
31、ons . 24. Abbreviations and acronyms . 36. MIHF service . 36.4 Media independent command service 36.4.2 Command service flow model . 36.4.3 Command list. 56.4.3.2 MIH commands . 56.4.3.2.1General. 57. Service access points (SAPs) and primitives. 57.2 SAPs. 57.2.3 Media independent SAP: MIH_SAP . 57.
32、3 MIH_LINK_SAP primitives 57.3.9 Link_Capability_Discover. 57.3.9.2 Link_Capability_Discover.confirm . 57.3.9.2.2Semantics of service primitives . 57.4 MIH_SAP primitives . 67.4.1 MIH_Capability_Discover. 67.4.1.1 MIH_Capability_Discover.request 67.4.1.1.2Semantics of service primitives . 67.4.1.2 M
33、IH_Capability_Discover.indication 77.4.1.2.2Semantics of service primitives . 77.4.1.3 MIH_Capability_Discover.response 87.4.1.3.2Semantics of service primitives . 87.4.1.4 MIH_Capability_Discover.confirm. 97.4.1.4.2Semantics of service primitives . 97.4.29 MIH_Net_HO_Bcst_Commit 117.4.29.1 MIH_Net_
34、HO_Bcst_Commit.request . 117.4.29.1.1Function . 117.4.29.1.2Semantics of service primitives . 117.4.29.1.3When generated . 127.4.29.1.4Effect on receipt. 127.4.29.2 MIH_Net_HO_Bcst_Commit.indication. 127.4.29.2.1Function . 127.4.29.2.2Semantics of service primitives . 127.4.29.2.3When generated . 13
35、7.4.29.2.4Effect on receipt. 138. Media independent handover protocol 138.2 MIH protocol description. 138.2.3 MIH protocol transaction state diagram 13x Copyright 2012 IEEE. All rights reserved.8.2.3.4 Inter-state-machine procedures 138.2.3.7 Transaction source and destination state machines . 138.2
36、.3.7.1Intra-state-machine variables. 138.2.4 Other considerations 138.2.4.3 MIHF discovery. 138.2.4.3.4Solicited MIH capability discovery . 138.3 MIH protocol identifiers 148.3.1 MIHF ID 148.6 MIH protocol messages . 148.6.1 MIH messages for service management 148.6.1.1 MIH_Capability_Discover reque
37、st 148.6.1.2 MIH_Capability_Discover response 168.6.3 MIH messages for command service. 178.6.3.23 MIH_Net_HO_Bcst_Commit indication. 17Annex D (normative) Mapping MIH messages to reference points 18Annex F (normative) Data type definiton 19Annex L (normative) MIH protocol message code assignments.
38、27Annex M (normative) Protocol implementation conformance statement (PICS) proforma 28Copyright 2012 IEEE. All rights reserved. 1IEEE Standard for Local and metropolitan area networks Part 21: Media Independent Handover Services Amendment 2: Extension for Supporting Handovers with Downlink Only Tech
39、nologiesIMPORTANT NOTICE: IEEE Standards documents are not intended to ensure safety, health, or environmental protection, or ensure against interference with or from other devices or networks. Implementers of IEEE Standards documents are responsible for determining and complying with all appropriat
40、e safety, security, environmental, health, and interference protection practices and all applicable laws and regulations.This IEEE document is made available for use subject to important notices and legal disclaimers. These notices and disclaimers appear in all publications containing this document
41、and may be found under the heading “Important Notice” or “Important Notices and Disclaimers Concerning IEEE Documents.”They can also be obtained on request from IEEE or viewed at http:/standards.ieee.org/IPR/disclaimers.html.(This amendment specifies enhancements to IEEE Std 802.21-2008.)NOTEThe edi
42、ting instructions are shown in bold italic. Four editing instructions are used: change, delete, insert, and replace. Change is used to make corrections in existing text or tables. The editing instruction specifies the location of the change and describes what is being changed by using strikethrough
43、(to remove old material) and underscore (to add new material). Delete removes existing material. Insert adds new material without disturbing the existing material. Insertions may require renumbering. If so, renumbering instructions are given in the editing instruction. Replace is used to make change
44、s in figures or equations by removing the existing figure or equation and replacing it with a new one. Editing instructions, change markings, and this NOTE will not be carried over into future editions because the changes will be incorporated into the base standard.11Notes in text, tables, and figur
45、es are given for information only and do not contain requirements needed to implement the standard.IEEE Std 802.21b-2012 MEDIA INDEPENDENT HANDOVER SERVICESAMENDMENT 22 Copyright 2012 IEEE. All rights reserved.1. Overview1.3 GeneralChange text in 1.3 as follows:This standard provides link-layer inte
46、lligence and other related network information to upper layers to optimize handovers between heterogeneous networks. This includes media types specified by Third Generation (3G) Partnership Project (3GPP), 3G Partnership Project 2 (3GPP2), and both wired and wireless media in the IEEE 802 family of
47、standards, and downlink-only (DO) media such as Digital Video Broadcasting (DVB), Terrestrial Digital Multimedia Broadcasting (T-DMB) and Advanced Television Systems Committee Mobile/Handheld (ATSC-M/H). In this standard, unless otherwise noted, media refers to the method/mode of accessing a telecom
48、munication system (e.g., cable, radio, satellite), as opposed to sensory aspects of communication (e.g., audio, video).1.5 Media independenceChange text in 1.5 as follows:The intent of this standard is to provide generic link-layer intelligence independent of the specifics of mobile nodes or radio n
49、etworks. As such, this standard is intended to provide a generic interface between the link layer users in the mobility-management protocol stack and existing media-specific link layers, such as those specified by 3GPP, 3GPP2, and the IEEE 802 family of standards, and downlink-only media.This standard defines SAPs and primitives that provide generic link-layer intelligence. Individual media- specific technologies thereafter need to enhance their media-specific SAPs and primitives to satisfy the generic abstractions of this standard. Suitable amen
