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    TIA-1039-A-2011 QoS Signaling for IP QoS Support and Sender Authentication《IP QoS信令 QoS支持和发送鉴定》.pdf

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    TIA-1039-A-2011 QoS Signaling for IP QoS Support and Sender Authentication《IP QoS信令 QoS支持和发送鉴定》.pdf

    1、 TIA-1039-A (Revision of TIA-1039) August 2011QoS Signaling for IP QoS Support and Sender Authentication NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeabi

    2、lity and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for their particular need. The existence of such Standards and Publications shall not in any respect preclude any member or non-member of TIA from manufacturing or selling p

    3、roducts not conforming to such Standards and Publications. Neither shall the existence of such Standards and Publications preclude their voluntary use by Non-TIA members, either domestically or internationally. Standards and Publications are adopted by TIA in accordance with the American National St

    4、andards Institute (ANSI) patent policy. By such action, TIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publication. This Standard does not purport to address all safety problems associated with its use or all appl

    5、icable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Project No. 3-0158-RV1, formulated under the cognizance of the TIA TR-34 Satel

    6、lite Equipment and Systems). Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer to current Catalog of TIA TELECOMMUNICATIONS INDUSTRY ASSOCIATION STANDARDS AND ENGINEERING PUBLICATIONS or call

    7、IHS, USA and Canada (1-877-413-5187) International (303-397-2896) or search online at http:/www.tiaonline.org/standards/catalog/ All rights reserved Printed in U.S.A. NOTICE OF COPYRIGHT This document is copyrighted by the TIA. Reproduction of these documents either in hard copy or soft copy (includ

    8、ing posting on the web) is prohibited without copyright permission. For copyright permission to reproduce portions of this document, please contact the TIA Standards Department or go to the TIA website (www.tiaonline.org) for details on how to request permission. Details are located at: http:/www.ti

    9、aonline.org/standards/catalog/info.cfm#copyright or Telecommunications Industry Association Technology (b) there is no assurance that the Document will be approved by any Committee of TIA or any other body in its present or any other form; (c) the Document may be amended, modified or changed in the

    10、standards development or any editing process. The use or practice of contents of this Document may involve the use of intellectual property rights (“IPR”), including pending or issued patents, or copyrights, owned by one or more parties. TIA makes no search or investigation for IPR. When IPR consist

    11、ing of patents and published pending patent applications are claimed and called to TIAs attention, a statement from the holder thereof is requested, all in accordance with the Manual. TIA takes no position with reference to, and disclaims any obligation to investigate or inquire into, the scope or v

    12、alidity of any claims of IPR. TIA will neither be a party to discussions of any licensing terms or conditions, which are instead left to the parties involved, nor will TIA opine or judge whether proposed licensing terms or conditions are reasonable or non-discriminatory. TIA does not warrant or repr

    13、esent that procedures or practices suggested or provided in the Manual have been complied with as respects the Document or its contents. If the Document contains one or more Normative References to a document published by another organization (“other SSO”) engaged in the formulation, development or

    14、publication of standards (whether designated as a standard, specification, recommendation or otherwise), whether such reference consists of mandatory, alternate or optional elements (as defined in the TIA Engineering Manual, 4thedition) then (i) TIA disclaims any duty or obligation to search or inve

    15、stigate the records of any other SSO for IPR or letters of assurance relating to any such Normative Reference; (ii) TIAs policy of encouragement of voluntary disclosure (see Engineering Manual Section 6.5.1) of Essential Patent(s) and published pending patent applications shall apply; and (iii) Info

    16、rmation as to claims of IPR in the records or publications of the other SSO shall not constitute identification to TIA of a claim of Essential Patent(s) or published pending patent applications. TIA does not enforce or monitor compliance with the contents of the Document. TIA does not certify, inspe

    17、ct, test or otherwise investigate products, designs or services or any claims of compliance with the contents of the Document. ALL WARRANTIES, EXPRESS OR IMPLIED, ARE DISCLAIMED, INCLUDING WITHOUT LIMITATION, ANY AND ALL WARRANTIES CONCERNING THE ACCURACY OF THE CONTENTS, ITS FITNESS OR APPROPRIATEN

    18、ESS FOR A PARTICULAR PURPOSE OR USE, ITS MERCHANTABILITY AND ITS NONINFRINGEMENT OF ANY THIRD PARTYS INTELLECTUAL PROPERTY RIGHTS. TIA EXPRESSLY DISCLAIMS ANY AND ALL RESPONSIBILITIES FOR THE ACCURACY OF THE CONTENTS AND MAKES NO REPRESENTATIONS OR WARRANTIES REGARDING THE CONTENTS COMPLIANCE WITH A

    19、NY APPLICABLE STATUTE, RULE OR REGULATION, OR THE SAFETY OR HEALTH EFFECTS OF THE CONTENTS OR ANY PRODUCT OR SERVICE REFERRED TO IN THE DOCUMENT OR PRODUCED OR RENDERED TO COMPLY WITH THE CONTNTS. TIA SHALL NOT BE LIABLE FOR ANY AND ALL DAMAGES, DIRECT OR INDIRECT, ARISING FROM OR RELATING TO ANY US

    20、E OF THE CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENC

    21、E), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. TIA-1039-A3ContentsIntroduction . 71.1. Sco

    22、pe 71.2. Objectives . 81.3. Document Organisation 81.4. Abbreviations 81.5. Definitions 101.6. REFERENCES 121.6.1 Normative References. 121.6.2 Informative References. 122 System Architecture 132.1 Satellite and Radio Links 132.2 Network Architecture Satellite Networks 152.3 QoS Service Goals . 162.

    23、4 QoS Signaling Model for Available Rate Service . 182.5 QoS Signaling for Variable Rate Service . 192.6 QoS Signaling Model for Maximum Rate Service . 192.7 QoS Signaling Model for Guaranteed Rate Service. 193 Limitations in Curent QoS Techniques . 203.1 Introduction 203.2 Diffserv Limitations . 20

    24、3.3 IntServ Limitations 203.4 TCP Limitations . 21TIA-1039-A43.5 QoS Feature Summary 223.5.1 Maximum Rate Service (MRS) . 223.5.2 Available Rate Service (MRS). 223.5.3 Preference Priority 233.6 Network Traffic Manager (Net-TM) Operation. 234 Procedures for Signaling QoS 244.1 Authentication 244.2 St

    25、andard IP Case . 244.3 QoS Signaling Operation 244.3.1 QoS Structure 244.3.2 Request Procedure 254.3.3 Response Procedure (at Destination) 264.3.4 Response Receipt (Back at Source) 264.3.5 Renegotiate Every 128 Packets or 1 Second 274.3.6 Sender Rules . 274.4 Net-TM Rate Negotiation 284.5 Non-Compli

    26、ant Network Equipment the addition of a security structure to allowsecure authentication of the sender. The network uses this to obtain the current maximum priorityallocated to the sender, and the receiver may also obtain certain limited information about the sender.This addition allows the new prot

    27、ocol to be safely used for Emergency Services to give priority todesignated personal during an Emergency. It also is designed to support a wide priority range for use ina military network. It is designed to provide a new, much higher level of network security where it isused.The QoS defined within t

    28、his signaling structure can support four general types of service. The first is afully guaranteed rate service flow, which implies no oversubscription of network resources. The secondis a maximum rate service flow, which allows some oversubscription but virtually no packet loss. Thethird is a variab

    29、le rate service flow, where available rate is combined with a minimum rate guarantee.The fourth is an available rate service flow, one that can jumpstart the Transmission Control Protocol(TCP) to the highest rate the network can support, eliminating slow-start problems. In the available rateservice

    30、case the capacity available based on network congestion is fed back to the sender very rapidly atall times. This will help to differentiate congestion problems from channel errors (measured in bit errorrates), permitting the sender to then optimize his packet error control without confusing it withc

    31、ongestion. For premium services like voice and video maximum rate service sets up a low delay, lowloss path with a minimal of effort.TIA-1039-A8This version of TIA-1039A adds a new capability to improve network security through sessionauthentication. Security against cyber crime has thus far been ma

    32、inly focused on the computer but thisbattle is being lost; more software holes are found each month than can be patched. This goal of thisnew capability is to have the network help in this battle by authenticating the user and the computersattached. The session authentication is optional and the att

    33、ributes of ones identity which are providedto the network or the receiver are under the senders control. However, legal investigation of a cybercrime may have access to the users identity and transaction history, thus allowing, finally, the ability totrack down and stop most all cyber crime.1.2. Obj

    34、ectivesThis document is a complete specification of the requirements for this QoS Extension Header. It specifiesthe protocol structure, the Network Traffic Manager (Net-TM) responsibilities at network nodes, and theactions required of the sender and receiver. It supports, in both IPv4 and IPv6, guar

    35、anteed andmaximum rate flows, variable rate and available rate flow setup allowing TCP speedup independent ofnetwork delay and slowstart, and specifies charging direction. Also it now incorporates sessionauthentication, which should help stop cyber crime and identity theft.1.3. Document Organisation

    36、This document is organized into 6 sections: Overview, System Architecture, Limitations in Current QoSTechniques, Procedures for Signaling QoS, QoS Specification Packet Format and Fields, and SessionAuthentication.1.4. AbbreviationsAAA Authentication, Authorization and Accounting systemABR Available

    37、Bit RateAR Available RateARS Available Rate ServiceAS Autonomous SystemATM Asynchronous Transfer ModeBRAS Broadband Remote Access ServerBT Burst ToleranceCD Change / DirectionCH Chain Field for additional blocksCMTS Cable Modem Termination SystemDARPA Defense Advanced Research Projects AgencyTIA-103

    38、9-A9DIFFSERV Differentiated ServicesDP Delay PriorityDSCP Differentiated Services Code PointDSL Digital Subscriber LineDSLAM Digital Line Access MultiplexerECN Explicit Congestion NotificationFSA Flow State AwareGR Guaranteed RateGRS Guaranteed Rate ServiceHMAC Hash-based Message Authentication Code

    39、ICMP Internet Control Message ProtocolID IdentifierIPSEC IPSEC is a protocol suite for securing IP communicationsIETF Internet Engineering Task ForceIntServ Integrated ServicesIP Secure IP ProtocolIPv4 Internet Protocol Version 4IPv6 Internet Protocol Version 6LAN Local Area NetworkLDP Label Distrib

    40、ution ProtocolMRS Maximum Rate ServiceNAT Network Address TranslationNet-TM Network Traffic ManagerMTU Maximum Transmission Unit in IPv4 and IPv6QoS Quality of ServiceTIA-1039-A10PKI Public Key InfrastructurePP Preference PriorityPSTN Public Switched Telephone NetworkRED Random Early DetectionRFC Re

    41、quest for CommentsRSVP Reservation ProtocolRTT Round Trip TimeSHA Secure Hash FunctionSPI Security Parameters Index used in IPSECSYN Synchronizing Packet flag for TCPTCP Transmission Control ProtocolTDM Time Division MultiplexingTP Type FieldUDP User Datagram ProtocolVBR Variable Bit Rate as used in

    42、 ATMVPN Virtual Private NetworkVRS Variable Rate ServiceWRED Weighted Random Early DetectionWWW World Wide Web1.5. Definitionsbps: Bits per secondCoS: Class of Service is defined herein to mean a process within IP network equipment where a largegroup of flows, not all moving from the same source or

    43、to the same destination, are associated withcertain performance parameters such as different discard or scheduling priority. In IPv4 the DiffservCoding define the Class of Service, and thus put an inherent limit of 64 classes or priorities. Flows withina single traffic class will all be subject to t

    44、he same discard procedure and the same scheduling process.Thus, if the total set of flows in one class exceeds the capacity of a port, they all will suffer from thesame discard process, typically random discards.TIA-1039-A11Flow: A flow is defined herein to mean a unidirectional set of data-grams th

    45、at carry informationbetween one user application and another. In the IPv4 world, a flow is defined by the source anddestination addresses, the protocol, and the transport layer (i.e. TCP or UDP) source and destinationports.LOSSLIMIT: LOSSLIMIT is the maximum los rate that a sender should allow befor

    46、e reverting to standardIP. It indicates that some Network Node is not a Net-TM and is currently overloaded.Net-TM: A Network Traffic Manager is the system at each network node that is responsible for checkingand modifying the QoS structure and Security Structure as specified in this document. The eq

    47、uipmentmight be a traffic manager, a router or a switch.NormPriority: NormPriority is the highest priority value that can be authorized without senderauthentication. The priority field is 8 bits with the highest value being the leftmost bit. The default valueof NormPriority is 0010000 or 1/8 of the

    48、range which with 5 bit priorities allows 4 values for the averageuser.PP: Preference Priority is the QoS parameter used herein for user preference, the priority a user hasto override or send faster than other users in the case of limited resources. This capability is typicallyused to allow emergency

    49、 services to get through during a communication overload.QoS: QoS is described herein as a set of parameters used to define the quality and quantity ofresources a flow requires, as it traverses a network. Specifically in this context, they are defined asGuaranteed Rate, Available Rate, Delay Priority, Preference Priority and Burst Tolerance.QoS Structure: A block of 16 bytes is used to specify the QoS parameters. In the QoS Structure theavailable rate, guaranteed rate, delay priority, preference priority, burst tolerance, and chargingdirection for the flow are specified.Request Packet


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