ITU-R F 1400-1999 Performance and Availability Requirements and Objectives for Fixed Wireless Access to Public Switched Telephone Network《固定无线接入到公用交换电话网的性能 可用性要求以及目标》.pdf
《ITU-R F 1400-1999 Performance and Availability Requirements and Objectives for Fixed Wireless Access to Public Switched Telephone Network《固定无线接入到公用交换电话网的性能 可用性要求以及目标》.pdf》由会员分享,可在线阅读,更多相关《ITU-R F 1400-1999 Performance and Availability Requirements and Objectives for Fixed Wireless Access to Public Switched Telephone Network《固定无线接入到公用交换电话网的性能 可用性要求以及目标》.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、Rec. ITU-R F.1400 1RECOMMENDATION ITU-R F.1400*,*PERFORMANCE AND AVAILABILITY REQUIREMENTSAND OBJECTIVES FOR FIXED WIRELESS ACCESSTO PUBLIC SWITCHED TELEPHONE NETWORK(Questions ITU-R 215/8 and ITU-R 140/9)(1999)Rec. ITU-R F.14001 IntroductionWireless access systems are a viable alternative to wireli
2、ne for service access to the public switched telephone network(PSTN). It is, therefore, desirable that the performance and availability of the wireless access systems be equivalent tothat provided by wireline.2 ScopeThis Recommendation summarizes the objectives and requirements relating to performan
3、ce and availability for wirelesstechnology used for PSTN network access. Fixed wireless access (FWA) is the connection between the user networkinterface (UNI) and the PSTN local exchange (LE) service node interface (SNI) (see Fig. 1).References to and extracts of material from existing ITU Recommend
4、ations dealing with performance and availabilityparameters are made where appropriate.In the framework of the generic ITU Recommendations, performance objectives and requirements are a function of theservice carried over the access. Requirements and objectives for basic telephony and low speed data
5、services are not asstringent as required for high speed data or integrated services digital network (ISDN) services. In recognition of thediffering requirements the following three classifications of services for wireless access systems have been used indeveloping this Recommendation:Type 1: Analogu
6、e signals such as voice and voiceband data at rates up to 64 kbit/s (minimum 3.1 kHz audio asidentified in ITU-T Recommendation G.174).Type 2: Access bearer service from 64 kbit/s to bit rates below the primary rate.Type 3: Digital services operating at the primary rate or above._*This Recommendatio
7、n was developed jointly by Radiocommunication Study Groups 8 (Working Party 8A) and 9 (WorkingParty 9B), and any further revision should be undertaken jointly.*This Recommendation should be brought to the attention of Radiocommunication Study Group 8 (Working Party 8A).2 Rec. ITU-R F.14001400-01Radi
8、oterminationcustomerlocationRadioaccessnetworkInterface fordigitalsignals(Note 2)UNI(Note 1)PSTN/LESNI(Note 1)(Wireless)FIGURE 1Reference section for performance and availability objectivesNote 1 Performance and availability criteria are defined at the SNI and UNI and should be measurable at these p
9、oints.Note 2 Physical layer of the interface should be based on ITU-T Recommendation G.703.FIGURE 1 1400-013 ReferencesITU-R Recommendations Recommendation ITU-R F.697: Error performance and availability objectives for the local-grade portion ateach end of an ISDN connection at a bit rate below the
10、primary rate utilizingdigital radio-relay systems Recommendation ITU-R F.757: Basic system requirements and performance objectives for fixed wireless localloop applications using cellular type mobile technologies Recommendation ITU-R F.1104: Requirements for point-to-multipoint radio systems used in
11、 local grade portionof an ISDN connection Recommendation ITU-R F.1189: Error performance objectives for constant bit rate digital paths at or above theprimary rate carried by digital radio-relay systems which may form part of thenational portion of a 27 500 km hypothetical reference path Recommendat
12、ion ITU-R F.1330: Performance limits for bringing into service of the parts of PDH and SDHpaths and sections implemented by digital radio-relay systemsITU-T Recommendations ITU-T Recommendation E.506: Forecasting international traffic ITU-T Recommendation E.541: Overall grade of service for internat
13、ional connections (subscriber-to-subscriber) ITU-T Recommendation G.113: Transmission impairments ITU-T Recommendation G.114: One-way transmission time ITU-T Recommendation G.173: Transmission planning aspects of the speech service in digital public landmobile networksRec. ITU-R F.1400 3 ITU-T Recom
14、mendation G.174: Transmission performance objectives for terrestrial digital wireless systemsusing portable terminals to access the PSTN ITU-T Recommendation G.175: Transmission planning for private/public network interconnection of voicetraffic ITU-T Recommendation G.703: Physical/electrical charac
15、teristics of hierarchical digital interfaces ITU-T Recommendation G.711: Pulse code modulation (PCM) of voice frequencies ITU-T Recommendation G.726: 40, 32, 24, 16 kbit/s adaptive differential pulse code modulation (ADPCM) ITU-T Recommendation G.728: Coding of speech at 16 kbit/s using low delay-co
16、de excited linear prediction ITU-T Recommendation G.821: Error performance of an international digital connection operating at a bit ratebelow the primary rate and forming part of an integrated services digitalnetwork ITU-T Recommendation G.826: Error performance parameters and objectives for intern
17、ational constant bit ratedigital paths at or above the primary rate ITU-T Recommendation G.827: Availability parameters and objectives for path elements of internationalconstant bit-rate digital paths at or above the primary rate ITU-T Recommendation H.221: Frame structure for a 64 to 1 920 kbit/s c
18、hannel in audiovisual teleservices4 RecommendationsThe ITU Radiocommunication Assembly recommends the following performance and availability requirements andobjectives for FWA systems. The performance objectives specified in 4.1 to 4.3 should be met for each direction oftransmission.The error perfor
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