tailieunhanh - Advances in Vehicular Networking Technologies Part 13

Tham khảo tài liệu 'advances in vehicular networking technologies part 13', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 352 Advances in Vehicular Networking Technologies Fig. 9. Graphic illustration of the population density in the Stockholm area 8. Results from the Swedish measurement campaign In 2007 all Swedish 3G licensees reported that they had fulfilled the modified see Table 3 coverage requirements. In order to verify these claims the Swedish regulator PTS subsequently conducted some initial and preliminary tests. Fig. 10. Graphic illustration of coverage in the Fagersta region at the 52dBpV m CPICH level. Green Squares indicate Test squares passed yellow are at the boarder line and red square are failed Verifying 3G License Coverage Requirements 353 Suburban environment test case Fagersta The first test case was conducted in a typical Swedish suburban environment in an area of and around the city of Fagersta. The field strength requirement was set to 52dBpV m. In total 535 test squares were measured and in order to pass the test not more than 39 were allowed to fail for the operator to comply with the license requirement. As shown in Table IV the result from the measurements show that the operator passes the test easily. Even if the CPICH field strength requirement would be increased to 53dBpV m would the operator still pass the test indicating that the planning is fairly robust against fading. Field strength dBịiV m No. Failed Squares 53 31 52 23 51 19 50 17 49 16 48 9 47 6 Table 7. Test results from Fagersta Urban environment test case Sundbyberg The second test was conducted in a typical Swedish urban environment in the city of Sundbyberg some 10km north of Stockholm. In total 602 test squares were measured and in order to pass the test not more than 43 could fail for the operator to comply with the license requirement. In this environment the required field strength on the CPICH is 58dBpV m. Field strength requirement dBpV m No. Failed Squares 64 11 63 9 62 5 61 3 60 1 59 0 58 0 57 0 Table 8. Test results from .