1、 STD-CEPT ERC REPORT 72-ENGL 1799 = 232b414 OOLb31q 743 European Radiocommunications Committee (ERC) ERC REPORT 72 - within the European Conference of Postal and Telecommunications Administrations (CEPT) COMPATIBILITY STUDIES RELATED TO THE POSSIBLE EXTENSION BAND FOR HIPERLAN AT 5 GHz Menton, May 1
2、999 STDDCEPT ERC REPORT 72-ENGL 1799 I232b414 OOLb315 bBT = , Copyright 1999 the European Conference of Postal and lelecommunicatioiia Adi:iinisuations (CEPj STD-CEPT ERC REPORT 72-ENGL 1779 232b4L4 OOLb3Lb 5Lb 5350 - 5450 ERC REPORT 72 SPACE RESEARCH (active) AERONAUTICAL RADIONAVIGATION 5250 - 525
3、5 RADIOLOCATION EESS (active) SPACE RESEARCH 5450 - 5460 RADIOLOCATION l 5255-5350 I EESS (active) EESS (active) AERONAUTICAL RADIONAVIGATION EESS (active) I 5460 - 5470 I RADIONAVIGATION 5470 - 5650 t- S5.449 AERONAUTICAL: (Annex 1) MARITIME RADIONAVIGATION 5600 - 5650 5650 - 5725 I RADIOLOCATION I
4、 S5.452 METEROLOGICAL RADARS LI I 5725 - 5850 5795 - 5805 5850 - 5875 FSS (E-to-S) RADIOLOCATION RTTT FIXED FSS (E-to-S) MOBILE Requirements for possible HIPERLAN use Sharing is feasible with restrictions - see Note 1 Sharing is not feasible 1WEIRP Indoor and Outdoor use Dynamic Frequency Selection
5、Sharing is feasible with restrictions - see Note 1 Table 0.1: Summary of the results Note 1: As far as the satellite services (EESS in the band 5250-5350 MHz and FSS in the band 5725-5875 MHz) are concerned, the sharing feasibility depends on the number of channels which can be identified for HPERLA
6、Ns (the higher the number of channels the easier is the sharing). If the total required amount of spectrum (i.e. 330 MHz) can be identified, sharing between HIFERLAN and satellite services is feasible under the following conditions: HIPERLANs are limited to indoor use; The power is limited to an EIR
7、P of 200 mW (The power here refers to the EIRP averaged over the transmission burst at the highest power control setting); Transmitter power control shall be defined in the ETSI standard to ensure a mitigation factor of at least 3 dB on the average output power of the devices under the coverage area
8、 of a satellite. Dynamic Frequency Selection is to be used. 1 These conditions are sufficient provided that the DFS process is capable to ensure the uniform spreading of the loading over all the available channels. If this cannot be ensured, more spectrum or a reduction in power is needed . Compatib
9、ility with short range devices were not studied in detail due to the difficulty to predict the possible applications which could be developed in future, however problems are only expected where these devices are operated in close proximity. The amateur service, which operates on a secondary basis, w
10、as not studied. STDDCEPT ERC REPORT 72-ENGL 1777 .I 232b41i4 00Lb317 Li52 ERC REPORT 72 Executive Summary In 1996 ERC Decision ERC/DEC/(96)03 designated the frequency band 5150 - 5250 for HIPERLANs conforming to ETS 300 652. The conditions for the use of the band by HIPERLANs are set out in CEPTERCR
11、EC 70-03 Annex 3. Furthermore CEPT Recommendation T/R 22-06 designates the frequency band 5 150 - 5250 MHz for HIFERLANs and the band 5250 - 5300 MHz on a national basis. In this recommendation the EIRP of HIPERLANs shall not exceed O dBW and the equipment is intended to be used indoors. Due to new
12、applications including multi-media, wireless ATM and Internet as well as new uses, including possible broadband access to UMTS networks and services, the ETSI project on Broadband Radio Access Networks (BRAN) requested the European Radiocommunications Committee (ERC) to study the possibility of exte
13、nding the currently designated band. FT SE24/SE24H carried out compatibility studies in the frequency range 5250 - 5875 MHz in order to identify a possible extension band for HIFERLANs based on the estimated data rate requirement from ETSI BRAN project. Some parameters of HIPERLANs could not be uneq
14、uivocally determined and in these cases several values of the relevant parameters were used. The study shows that HIPERLANs need 330 MHz from the 5 GHz frequency band. The current designation of spectrum in CEPT countries is 100 MHz, with a further 50 MHz on a national basis. In order to facilitate
15、uncoordinated band sharing it is proposed that HIFERLANs should be designated additional spectrum beyond the requirement for 330 MHz; such additional spectrum in combination with dynamic frequency selection (DFS) allows HIPERLANs to avoid Co-channel operation with incumbent services (e.g. radars, RT
16、TT) without the need for frequency coordination. The additional spectrum provides additional mitigation of interference due to the lower densities of HIPERLANs per channel, this is particularly beneficial in the case of sharing with the satellite services. The DFS process would need to follow some a
17、lgorithm, which would spread uniformly the loading over all the available channels, it could even be tailored to reduce loading in some more critical areas, if needed. The conclusion on sharing between HIFERLANs and terrestrial services will only be valid provided DFS has been carefully specified, t
18、ested and proved efficient. 0 WG SE indicates that BRAN should implement a protocol of power control for up and downlink and to define it in the standards: this will have a major impact in reducing the interference into other services. A summary of the results of the studies can be seen in Annex 1 a
19、nd overleaf is shown an extract of the table that summarises the results of the study: INDEX TABLE 1 INTRODUCTION 1 2 OVERVIEW OF HIPERLANS . 1 2.1 SUMMARY OF HIPERLANs 1 2.2 STANDARDISATION SCHEDULE 2 2.3 INTERNATIONAL CO-OPERATION . 2 3 SPECTRUM REQUIREMENTS 3 DATA RATE REQUIREME NT . 3 SPECTRUM R
20、EQUEME NT . 4 3.1 3.2 3.3 3.4 3.5 THE NEED FOR 5 GHZ SPECTRUM 4 SHARING OF SPECTRUM BEWEEN HIPERLANI1 AND HIFERLAN/2 5 FACLLITES FOR SELECTIVE USE OF FREQUENCY BANDS . 5 4 PROPAGATION ASPECTS . 6 5 HIPERLAN PARAMETERS AND DEPLOYMENT SCENARIOS . 7 5.1 TECHNICAL PARAMETERS . 7 5.2 DEPLOYMENT SCENARIOS
21、 8 6 COMPATIBILITY STUDIES IN THE BAND 5250 - 5875 MHZ . 8 6.1 EESS AND SPACE RESEARCH 8 6.2 RADARS 15 6.3 AMATEUR SERVICES 19 6.4 ROAD TRANSPORT AND TRAFFIC TELEMATICS (RTTT) 19 6.5 FIXED SATELLITE SERVICE 21 6.6 FIXED SERVICES AND ENG/OB . 26 6.7 GENERAL (NON-SPECIFIC) SHORT RANGE DEVICES . 27 7 C
22、ONCLUSIONS . 27 ANNEX I: SUMMARY TABLE OF FREQUENCY ALLOCATIONS FOR FREQUENCY BAND 5250 - 5875 MHz . 31 ANNEX 2 SUMMARY OF INDOOR PROPAGATION MEASUREMENTS ATSGHz 33 ANNEX 3 COMPATIBILITY BETWEEN HIPERLANS AND ROAD TRANSPORT di TRAFFIC TELEMATICS . 37 ANNEX 4 SHARING WITH SHORT RANGE DEVICES STD-CEPT
23、 ERC REPORT 72-ENGL 1777 232b414 001b3L7 225 m ERC REPORT 72 Page I COMPATIBILITY STUDIES RELATED TO THE POSSIBLE EXTENSION BAND FOR HIPERLAN AT 5 GHz 1 INTRODUCTION In 1996 ERC Decision ERCIDEC/(96)03 designated the frequency band 5 150 - 5250 for HIPERLANs conforming to ETS 300 652. The conditions
24、 for the use of HIPERLANs are set out in CEPT/ERC/REC 70-03 Annex 3. Furthermore CEPT Recommendation T/R 22-06 designates the frequency band 5150 - 5250 MHz for HIPERLANs and the band 5250 - 5300 MHz for use on a national basis. In this recommendation the EIRP of HIPERLANs shall not exceed O dBW and
25、 equipment is intended to be used indoors. Due to new applications including multi-media, wireless ATM and Internet and possible broadband access to UMTS networks and services, the ETSI project on Broadband Radio Access Networks (BRAN) requested the ERC to study the possibility of extending the curr
26、ently designated band. PT SE24H was tasked to carry out compatibility studies related to the request for additional spectrum for HIPERLANs. The terms of reference for SE24H stated that the study shall contain a technical analysis of the need to use the 5 GHz frequency band, identification of the cur
27、rent services in the band 5250 - 5875 MHz and an estimate of the sharing feasibility between each service and HJPERLANs. Finally, SE24H should identify possible frequency bands as extension bands for HIPERLANs. While this study was going on in PT SE24H, other studies in PT SE28 showed that there cou
28、ld be a sharing problem in the current HIPERLAN band (5.15 - 5.25 GHz) between HIPERLANs and MSS feeder links. The outcome of SE28 ERC Report 67 should also be taken into account when considering additional spectrum for HIPERLANs. This study gives an overview of HIPERLANs and their expected data rat
29、e and spectrum requirements. For the interference calculations information on propagation aspects was required, especially indoor to outdoor propagation effects. The propagation figures used in the report as well as some HIPERLAN parameters were discussed in great detail and the values used are the
30、figures most accepted by different bodies. If there was no agreed figure, calculations were carried out with different figures to show the range of the results. In the beginning of the compatibility studies, all of the existing studies were reviewed. When there was new information, especially about
31、HIPERLANs, the studies were modified accordingly. New studies were carried out between HIPERLANs and Road Transport and Traffic Telematics (RTTT) and between HIPERLANs and the fixed satellite service (FSS). General (i.e. non-specific) short range devices operating according to CEPT/ERC/REC 70-03 E w
32、ere also considered. Sharing studies were not carried out with the radio amateur services, which operates on a secondary basis, nor with the fixed service (FS) because of the very limited use of the FS in this frequency band. The studies which have not been published elsewhere are annexed to this re
33、port. 2 OVERVIEW OF HIPERLANs 2.1 Summary of HIPERLANs The increasing demand for anywhere, anytime communications and the merging of voice, video and data communications create a demand for broadband wireless networks. ETSI created the BRAN project to develop standards and specifications for broadba
34、nd radio access networks that cover a wide range of applications and are intended for different frequency bands. This range of applications covers systems for licensed and licence exempt use. The categories of systems covered by the BRAN project are summarised as follows: HIPERLAN/I provides high sp
35、eed (24 Mb/s typical data rate) radio local area network communications that are compatible with wired LANs based on Ethernet and Token ring standards IS0 8802.3 and IS0 8802.5. Restricted user mobility is supported within the local service area only. The technical specification for HIPERLAN/l, ETS
36、300 652, was published by ETSI in 1997. STD-CEP“ ERC REPORT 72-ENGL 1999 W 232b414 001b320 “47 W Standard ERC REPORT 72 Page 2 Deliverable Date HIPERLANI2 provides high speed (25 Mb/s typical data rate) communications between portable computing devices and broadband ATM and IP networks and is capabl
37、e of supporting multi-media applications. The typical operating environment is indoors. Restricted user mobility is supported within the local service area; wide area mobility (e.g. roaming) may be supported by standards outside the scope of the BRAN project. A new type of use has emerged recently:
38、HIPERLAN/2 as a possible access network for UMTS. In this type of use HIPERLANs would be used both indoors and outdoors, and would be controlled by a licensed network operator. This new requirement increases the need for a spectrum designation that allows outdoor use by at least a part of the HIPERL
39、AN devices. HIPERLAND HIPERLAN/2 Hiperlad2 is a centrally controlled system. This means that all communication is made between a central point, called the Access Point, and the mobile terminals. Functional Specifications EN 300 652 April 1997 Test Specifications ETS 300 836 April 1998 Functional Spe
40、cifications June 1999 Test Specifications January 2000 For the purposes of this report, HIPERLAN/l and HIPERLAN/2 are treated as basically the same except for one difference: HIPERLANA uses a special modulation during the Low Bit rate part of its transmission that leads to an apparent increase in th
41、e emitted power spectral densiy of about 6 dB in a 1.4 MHz bandwidth. HIPERACCESS, previously known as HIPERLAN Type 3, provides outdoor, high speed (25 Mb/s typical data rate) fixed radio access to customer premises and is capable of supporting multi-media applications (other technologies such as H
42、IPEIUAN/2 might be used for distribution within the premises). HIPERACCESS will allow an operator to rapidly roll out a wide area broadband access network to provide connections to residential households and small businesses. HIPERACCESS can be operated in either licensed or licence exempted spectru
43、m. The BRAN project is not considering the use of HIPERACCESS in the 5 GHz band. HIPERLINK, previously known as HIPERLAN Type 4 provides very high speed (up to 155 Mb/s data rate) radio links for static interconnections and is capable of multi-media applications; a typical use is the interconnection
44、 of HIPERACCESS networks and/or HIPERLAN access points into a fully wireless network. It should be noted that for HIPERLINK the intended operation frequency is 17 GHz. HIPERLINK is outside of the scope of this report. This document is only concerned with spectrum considerations relating to HIPERLANs
45、 in the 5 GHz range. 2.2 Standardisation Schedule Broadband radio access networks will be needed in the early years of the next century, so time is short. The BRAN project is saving time by focusing only on those elements which need to be standardised for radio access, looking to bodies like ETSI Sy
46、stem Protocols and Signalling (ETSI SPS), the ATM Forum and Internet Engineering Task Force (IETF) to help to define the overall system. The objective is to develop standards for the data link control and physical layers, and the interworking functions which are needed to fit them in to existing net
47、work models. The project schedule is shown below. Table 2.1: The schedule of the BRAN project 23 International Co-operation A number of international bodies work on similar subjects- including the Japanese Multi-Media Mobile Access Communications Promotion Council (MMAC), IEEE 802.1 1 and WIN Forum
48、(US). BRAN co-operates with these bodies. The objective is to reduce the number of separate standards for broadband systems as much as possible and to facilitate common world-wide spectrum designations. Regulatory authorities also co-operate with these industry groups. STD-CEPT ERC REPORT 72-ENGL 19
49、97 I232b919 UULb32L 783 = I l Number of Average data rate I HIPERLANs Useful data rate HIPERLAN ITotal data rate !bits/s/HIPERLAN 1 j % bitdudeployment % 70 1 bituideployment 1 D. I Nh In, DuNhk P. P. ID.Nh P STD-CEP” ERC REPORT 72-ENGL 1979 232L1iL4 OflLb323 75b 13 ERC REPORT 72 Page 5 The cost of the radio frequency technology goes up rapidly with increasing operating frequency; The power consumption of radio devices goes up with increasing frequency and this mitigates against the use of higher frequencies in portable, battery driven devices; The current allocatio
