1、 Recommendation ITU-R M.1450-5(02/2014)Characteristics of broadband radio local area networksM SeriesMobile, radiodetermination, amateurand related satellite servicesii Rec. ITU-R M.1450-5 Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and economic
2、al use of the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions of the Radiocommunication Sector are performed by Wor
3、ld and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-R/ISO/IEC referenced in Annex 1 of Resolution ITU-R 1. Forms to be used f
4、or the submission of patent statements and licensing declarations by patent holders are available from http:/www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/ISO/IEC and the ITU-R patent information database can also be found. Series
5、 of ITU-R Recommendations (Also available online at http:/www.itu.int/publ/R-REC/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service (television) F Fixed service M Mobile, radiodetermin
6、ation, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fixed-satellite and fixed service systems SM Spectrum management SNG Satell
7、ite news gathering TF Time signals and frequency standards emissions V Vocabulary and related subjects Note: This ITU-R Recommendation was approved in English under the procedure detailed in Resolution ITU-R 1. Electronic Publication Geneva, 2014 ITU 2014 All rights reserved. No part of this publica
8、tion may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R M.1450-5 1 RECOMMENDATION ITU-R M.1450-5 Characteristics of broadband radio local area networks (Questions ITU-R 212/5 and ITU-R 238/5) (2000-2002-2003-2008-2010-2014) Scope This Recommendation provides th
9、e characteristics of broadband radio local area networks (RLANs) including technical parameters, and information on RLAN standards and operational characteristics. Basic characteristics of broadband RLANs and general guidance for their system design are also addressed. The ITU Radiocommunication Ass
10、embly, considering a) that broadband radio local area networks (RLANs) are widely used for fixed, semi-fixed (transportable) and portable computer equipment for a variety of broadband applications; b) that broadband RLANs are used for fixed, nomadic and mobile wireless access applications; c) that b
11、roadband RLAN standards currently being developed are compatible with current wired LAN standards; d) that it is desirable to establish guidelines for broadband RLANs in various frequency bands; e) that broadband RLANs should be implemented with careful consideration to compatibility with other radi
12、o applications, noting a) that Report ITU-R F.2086 provides technical and operational characteristics and applications of broadband wireless access systems (WAS) in the fixed service; b) that other information on broadband WAS, including RLANs, is contained in Recommendations ITU-R F.1763, ITU-R M.1
13、652, ITU-R M.1739 and ITU-R M.1801, recommends 1 that the broadband RLAN standards in Table 2 should be used (see also Notes 1, 2 and 3); 2 that Annex 2 should be used for general information on RLANs, including their basic characteristics; 3 that the following Notes should be regarded as part of th
14、is Recommendation. NOTE 1 Acronyms and terminology used in this Recommendation are given in Table 1. NOTE 2 Annex 1 provides detailed information on how to obtain complete standards described in Table 2. NOTE 3 This Recommendation does not exclude the implementation of other RLAN systems. 2 Rec. ITU
15、R M.1450-5 TABLE 1 Acronyms and terms used in this Recommendation Access method Scheme used to provide multiple access to a channel AP Access point ARIB Association of Radio Industries and Businesses ATM Asynchronous transfer mode Bit rate The rate of transfer of a bit of information from one netwo
16、rk device to another BPSK Binary phase-shift keying BRAN Broadband Radio Access Networks (A technical committee of ETSI) Channelization Bandwidth of each channel and number of channels that can be contained in the RF bandwidth allocation Channel Indexing The frequency difference between adjacent cha
17、nnel centre frequencies CSMA/CA Carrier sensing multiple access with collision avoidance DAA Detect and avoid DFS Dynamic frequency selection DSSS Direct sequence spread spectrum e.i.r.p. Equivalent isotropically radiated power ETSI European Telecommunications Standards Institute Frequency band Nomi
18、nal operating spectrum of operation FHSS Frequency hopping spread spectrum HIPERLAN2 High performance radio LAN 2 HiSWANa High speed wireless access network type a HSWA High speed wireless access IEEE Institute of Electrical and Electronics Engineers IETF Internet Engineering Task Force LAN Local ar
19、ea network LBT Listen before talk MU Medium utilisation MMAC Multimedia mobile access communication Modulation The method used to put information onto an RF carrier MIMO Multiple input multiple output OFDM Orthogonal frequency division multiplexing PSD Power spectral density PSTN Public switched tel
20、ephone network QAM Quadrature amplitude modulation QoS Quality of Service QPSK Quaternary phase-shift keying RF Radio frequency Rec. ITU-R M.1450-5 3 RLAN Radio local area network SSMA Spread spectrum multiple access Tx power Transmitter power RF power in Watts produced by the transmitter TCP Transm
21、ission control protocol TDD Time division duplex TDMA Time-division multiple access TPC Transmit power control WATM Wireless asynchronous transfer mode 4 Rec. ITU-R M.1450-5 TABLE 2 Characteristics including technical parameters associated with broadband RLAN standards Characteristics IEEE Std 802.1
22、1-2012(Clause 17, commonly known as 802.11b) IEEE Std 802.11-2012 (Clause 18, commonly known as 802.11a(1) IEEE Std 802.11-2012 (Clause 19, commonly known as 802.11g(1) IEEE Std 802.11-2012 (Clause 18, Annex D and Annex E, commonly known as 802.11j) IEEE Std 802.11-2012 (Clause 20, commonly known as
23、 802.11n) IEEE Std 802.11ad-2012ETSI EN 300 328 ETSI EN 301 893ARIB HiSWANa, (1)ETSI EN 302 567 Access method CSMA/ CA, SSMA CSMA/CA Scheduled, CSMA/CA TDMA/TDD Modulation CCK (8 complex chip spreading) 64-QAM-OFDM 16-QAM-OFDM QPSK-OFDM BPSK-OFDM 52 subcarriers (see Fig. 1) DSSS/CCK OFDM PBCC DSSS-O
24、FDM 64-QAM-OFDM 16-QAM-OFDM QPSK-OFDM BPSK-OFDM 52 subcarriers (see Fig. 1) 64-QAM-OFDM16-QAM-OFDMQPSK-OFDM BPSK-OFDM 56 subcarriers in 20 MHz 114 subcarriers in 40 MHz MIMO, 1-4 spatial streams 256-QAM-OFDM 64-QAM-OFDM 16-QAM-OFDM QPSK-OFDM BPSK-OFDM 56 subcarriers in 20 MHz 114 subcarriers in 40 M
25、Hz 242 subcarriers in 80 MHz 484 subcarriers in 160 MHz and 80+80 MHz MIMO, 1-8 spatial streams Single Carrier: DPSK, /2-BPSK, /2-QPSK, /2-16QAM OFDM: 64-QAM, 16-QAM, QPSK, SQPSK 352 subcarriers No restriction on the type of modulation 64-QAM-OFDM 16-QAM-OFDM QPSK-OFDM BPSK-OFDM 52 subcarriers (see
26、Fig. 1) Rec. ITU-R M.1450-5 5 TABLE 2 (continued) Characteristics IEEE Std 802.11-2012(Clause 17, commonly known as 802.11b) IEEE Std 802.11-2012 (Clause 18, commonly known as 802.11a(1) IEEE Std 802.11-2012 (Clause 19, commonly known as 802.11g(1) IEEE Std 802.11-2012 (Clause 18, Annex D and Annex
27、E, commonly known as 802.11j) IEEE Std 802.11-2012 (Clause 20, commonly known as 802.11n) IEEE Std 802.11ad-2012ETSI EN 300 328 ETSI EN 301 893ARIB HiSWANa, (1)ETSI EN 302 567 Data rate 1, 2, 5.5 and 11 Mbit/s 6, 9, 12, 18, 24, 36, 48 and 54 Mbit/s 1, 2, 5.5, 6, 9, 11, 12, 18, 22, 24, 33, 36, 48 and
28、 54 Mbit/s 3, 4.5, 6, 9, 12, 18, 24 and 27 Mbit/s for 10 MHz channel spacing 6, 9, 12, 18, 24, 36, 48 and 54 Mbit/s for 20 MHz channel spacing From 6.5 to 288.9 Mbit/s for 20 MHz channel spacing From 6 to 600 Mbit/s for 40 MHz channel spacing From 6.5 to 693.3 Mbit/s for 20 MHz channel spacing From
29、13.5 to 1 600 Mbit/s for 40 MHz channel spacing From 29.3 to 3 466.7 Mbit/s for 80 MHz channel spacing From 58.5 to 6 933.3 Mbit/s for 160 MHz and 80+80 MHz channel spacing 6, 9, 12, 18, 27, 36 and 54 Mbit/s 6 Rec. ITU-R M.1450-5 TABLE 2 (continued) Characteristics IEEE Std 802.11-2012(Clause 17, co
30、mmonly known as 802.11b) IEEE Std 802.11-2012 (Clause 18, commonly known as 802.11a(1) IEEE Std 802.11-2012 (Clause 19, commonly known as 802.11g(1) IEEE Std 802.11-2012 (Clause 18, Annex D and Annex E, commonly known as 802.11j) IEEE Std 802.11-2012 (Clause 20, commonly known as 802.11n) IEEE Std 8
31、02.11ad-2012ETSI EN 300 328 ETSI EN 301 893ARIB HiSWANa, (1)ETSI EN 302 567 Frequency band 2 400-2 483.5 MHz 5 150-5 250 MHz(4) 5 250-5 350 MHz(3) 5 470-5 725 MHz(3)5 725-5 825 MHz 2 400-2 483.5 MHz 4 940- 4 990 MHz(2) 5 030-5 091 MHz(2)5 150-5 250 MHz(4) 5 250-5 350 MHz(3) 5 470-5 725 MHz(3)5 725-5
32、 825 MHz 2 400-2 483.5 MHz 5 150-5 250 MHz(4) 5 250-5 350 MHz(3) 5 470-5 725 MHz(3)5 725-5 825 MHz 5 150-5 250 MHz(4) 5 250-5 350 MHz(3) 5 470-5 725 MHz(3)5 725-5 825 MHz 57-66 GHz 2 400-2 483.5 MHz 5 150-5 350(5)and 5 470- 5 725 MHz(3)4 900 to 5 000 MHz (2)5 150 to5 250 MHz(4)57-66 GHz Channel inde
33、xing 5 MHz 5 MHz in 2.4 GHz 20 MHz in 5 GHz 20 MHz 2 160 MHz 20 MHz 20 MHz channel spacing 4 channels in 100 MHz Spectrum mask 802.11b mask (Fig. 4) OFDM mask (Fig. 1) OFDM mask (Figs. 2A, 2B for 20 MHz and Figs. 3A, 3B for 40 MHz) OFDM mask(Fig. 2B for 20 MHz, Fig. 3B for 40 MHz, Fig. 3C for 80 MHz
34、 Fig. 3D for 160 MHz, and Fig. 3E for 80+80 MHz) 802.11ad mask (Fig. 5) Fig. 1x OFDM mask (Fig. 1) Rec. ITU-R M.1450-5 7 TABLE 2 (end) Characteristics IEEE Std 802.11-2012 (Clause 17, commonly known as 802.11b)IEEE Std 802.11-2012 (Clause 18, commonly known as 802.11a(1) IEEE Std 802.11-2012(Clause
35、 19, commonly known as 802.11g(1)IEEE Std 802.11-2012 (Clause 19, Annex D and Annex E, commonly known as 802.11j) IEEE Std 802.11-2012(Clause 20, commonly known as 802.11n) IEEE P802.11ac IEEE Std 802.11ad-2012 EN 300 328 EN 301 893 ARIB HiSWANa,(1)ETSI EN 302 567 Transmitter Interference mitigation
36、 LBT LBT/DFS/ TPC LBT LBT/DFS/TPC LBT DAA/LBT, DAA/non-LBT, MU LBT/DFS/TPC LBT Receiver Sensitivity Listed in Standard (1)Parameters for the physical layer are common between IEEE 802.11a and ARIB HiSWANa. (2)See 802.11j-2004 and JAPAN MIC ordinance for Regulating Radio Equipment, Articles 49-20 and
37、 49-21. (3)DFS rules apply in the 5 250-5 350 and 5 470-5 725 MHz bands in many administrations and administrations must be consulted. (4)Pursuant to Resolution 229 (Rev.WRC-12), operation in the 5 150-5 250 MHz band is limited to indoor use. 8 Rec. ITU-R M.1450-5 FIGURE 1a OFDM transmit spectrum ma
38、sk for 802.11a, 11g, 11j, and HiSWANa systems M.1450-01aPower spectral density (dBr) Relative to maximumTransmit spectrum mask(not to scale)Typical signal spectrum(an example)0 dBr20 dBr28 dBr40 dBr30 20 911 9 11 20 30Frequency (MHz)cNOTE 1 The outer heavy line is the spectrum mask for 802.11a, 11g,
39、 11j, HiSWANa and the inner thin line is the envelope spectrum of OFDM signals with 52 subcarriers. NOTE 2 The measurements shall be made using a 100 kHz resolution bandwidth and a 30 kHz video bandwidth. NOTE 3 In the case of the 10 MHz channel spacing in 802.11j, the frequency scale shall be half.
40、 FIGURE 1b Transmit spectrum mask for EN 301 893 M.1450-01b0 dB = Reference level20 dB28 dB40 dB42 dB47 dB10.8 *N 9 *N 1.5 *N N 0 N 1.5 *N 9 *N 10.8 *NFrequency (MHz)0.5 *N 0.55 *N0.55 *N 0.5 *NN = Nominal channel bandwidth (MHz)NOTE dBc is the spectral density relative to the maximum spectral power
41、 density of the transmitted signal. Rec. ITU-R M.1450-5 9 FIGURE 2a Transmit spectral mask for 20 MHz 802.11n transmission in 2.4 GHz band M.1450-02a30 20 911 9 11 20 30Frequency (MHz)0 dBr20 dBr28 dBr45 dBrPSDNOTE Maximum of 45 dBr and 53 dBm/MHz at 30 MHz frequency offset and above. FIGURE 2b Tran
42、smit spectral mask for a 20 MHz 802.11n transmission in 5 GHz band and transmit spectral mask for 802.11ac M.1450-02b30 20 911 9 11 20 30Frequency (MHz)0 dBr20 dBr28 dBr40 dBrPSDNOTE For 802.11n, the maximum of 40 dBr and 53 dBm/MHz at 30 MHz frequency offset and above. For 802.11ac, the transmit sp
43、ectrum shall not exceed the maximum of the transmit spectral mask and 53 dBm/MHz at any frequency offset. 10 Rec. ITU-R M.1450-5 FIGURE 3a Transmit spectral mask for a 40 MHz 802.11n channel in 2.4 GHz band M.1450-03a21 19 060 402119Frequency Hz ( )6020 dBrPSD0 dBr28 dBr45 dBr40NOTE Maximum of 45 dB
44、r and 56 dBm/MHz at 60 MHz frequency offset and above. FIGURE 3b Transmit spectral mask for a 40 MHz 802.11n channel in 5 GHz band and transmit spectral mask for 802.11ac M.1450-03b21 19 060 402119Frequency Hz ( )6020 dBrPSD0 dBr28 dBr40 dBr40NOTE For 802.11n, maximum of 40 dBr and 56 dBm/MHz at 60
45、MHz frequency offset and above. For 802.11ac, the transmit spectrum shall not exceed the maximum of the transmit spectral mask and 56 dBm/MHz at any frequency offset. Rec. ITU-R M.1450-5 11 FIGURE 3c Transmit spectral mask for an 80 MHz 802.11ac channel M.1450-03c120 80 3941 39 41 80 120Frequency (M
46、Hz)0 dBr20 dBr28 dBr40 dBrPSDNOTE The transmit spectrum shall not exceed the maximum of the transmit spectral mask and 59 dBm/MHz at any frequency offset. FIGURE 3d Transmit spectral mask for a 160 MHz 802.11ac channel M.1450-03d240 160 7981 79 81 160 240Frequency (MHz)0 dBr20 dBr28 dBr40 dBrPSDNOTE
47、 The transmit spectrum shall not exceed the maximum of the transmit spectral mask and 59 dBm/MHz at any frequency offset. 12 Rec. ITU-R M.1450-5 FIGURE 3e Transmit spectral mask for a 80+80 MHz 802.11ac channel M.1450-03e40 dBr120 80 41 39 0 39 41 80 120Frequency (MHz)PSDLin.sumOriginalmask 1Both of
48、 the 80 MHzspectral masks havevalues greater than40 dBr and lessthan 20 dBr Neither of the two 80 MHzmasks have values greaterthan or equal to and less than orequal to 0 dBr20 dBrFrequency (MHz)40 dBr28 dBr28 dBr20 dBr20 dBr0 dBr0 dBr120 80 41 39 0 39 41 80 120PSD25 dBr200160 121 119 80 41 39200 160
49、121119804139Originalmask 2Highervalue40 dBr28 dBr20 dBr0 dBrPSDFrequency (MHz)Overall transmit spectral mask(bold line)HighervalueNOTE The transmit spectrum shall not exceed the maximum of the transmit spectral mask and 59 dBm/MHz at any frequency offset. FIGURE 4 Transmit spectrum mask for 802.11b M.1450-04Transmit spectrum maskfcfc +11 Hz fc +22 Hzfc 11 Hzfc 22 Hz30 dBr0 dBrRec. ITU-R M.1450-5 13 FIGURE 5 Transmit spectrum mask
