SISEM SRL PRODUCTS & SOLUTIONS

Transcription

1 SISEM SRL PRODUCTS & SOLUTIONS TLC Services

2 Sisem Telecommunications Services A broad spectrum of services supporting mobile networks implementation, development and optimization

3 SUMMARY 1. Interfering Signals Sweep Analysis and Troubleshooting of external o intra-system interfering signals within GSM/UMTS/LTE bands 2. LOS/MIM Viability analysis for point-to-point links with Line-Of_-Site verification and Interferential measurements within MW bands 3. Drive Test Technologies and solutions to optimize the network

4 Sisem /1 Interfering Signals Sweep A broad spectrum of services supporting mobile networks implementation, development and optimization

5 ABSTRACT In a mobile network, interferences happen ever more frequently and with ever more impact on the major KPI Networks. An interference can cause the complete unavailability of a radiomobile service with all the results that follow, considering that it is a fully-fledged public service and that the operators have obligations in terms of minimum levels of availability, which are very strict. SISEM offers an emergency service on BTS or NodeB sites to solve interferential problems in up-link, both caused by external and intra-system factors.

6 The investigation activities consider two main cases: Method of investigation The interference is generated by the system itself - Malfunctioning of some element in the receiving/transmitting chain - Source and target of the interference are the same - Intra-system passive intermodulation The interference is generated by an external device - Tv antenna amplifiers - Phone jammers - Isofrequency TV transmitters - Mini-repeaters - Satellite antennas

7 Diagnosis on BTS by PIM Master Sweep for external source Method of Intrasystem source External source investigation Intervention on BTS Source shutdown Real-time verification stop Forced procedure activation Real-time verification

8 Diagnosis on BTS by PIM Master Sweep for external source Intrasystem source External source Intervention on BTS Method of Real-time verification Forced procedure activation Source shutdown investigation stop Real-time verification

9 Sisem /2 LOS/MIM A broad spectrum of services supporting mobile networks implementation, development and optimization

10 ABSTRACT/1 A LOS (Line of Sight) verification for point-to-point link is a prior study of the physical space available and of possible obstacles to the realization of the link for PDH/SDH systems. The verification can be carryed out by means of optical equipment or an electromagnetic approach. The objective of the study is to indicate the quality of the LOS, according to a predefined scale, depending on how any obstacles impact on the First Fresnel Ellipsoid: Antenna 1 Height Obstacle Height First Fresnel Ellipsoid Line of Sight Curvature of the Earth Clear area in Fresnel zone Antenna 2 Height FRESNEL is completely free from obstacles LOS is excellent radio link is doable

11 ABSTRACT/2 The proximity of obstacles to the First Fresnel Ellipsoid or the presence of obstacles within it downgrade the evaluation of the radio link to: good or sufficient, questioning its feasibility. FRESNEL is completely occupied by obstacles LOS is null radio link is not doable Antenna 1 Height Obstacle Height First Fresnel Ellipsoid Line of Sight Clear area in Fresnel zone Antenna 2 Height Curvature of the Earth

12 ABSTRACT/3 The feasibility study for a point-to-point link is completed with the interferential analysis and the channel search for the activation of the link for PDH/SDH systems within the bands from 7 to 23 GHz. the objective of the study is the identification of interfering signals, that is channels already used by other operators for the implementation of a point-to-point link within the band and within the polarization in question. The acceptable interfering signals can be different depending on the direction they come from, on the basis of the radiation diagram of the antenna to install.

13 Method of investigation QUADRO INTERFERENZIALE BA NDA 13 GHz CH 28 MHz S ITO COZZO CERVELLO CS0072A DA TA 28-giu-16 A ZIMUTH 89 NORD S EMIBA NDA INFERIORE SUPERIORE P OL V O V O CH 28 MHz 14 MHz 28 MHz 14 MHz 28 MHz 14 MHz 28 MHz 14 MHz 1L 1L 1H 1H 1L 1L 1H 1H 2L 2L 2H 2H 3L 3L 3H 3H 2L 2L 2H 2H 4L 4L 4H 4H 5L 5L 5H 5H 3L 3L 3H 3H 6L 6L 6H 6H 7L 7L 7H 7H 4L 4L 4H 4H 8L 8L 8H 8H 9L 9L 9H 9H 5L 5L 5H 5H 10L 10L 10H 10H 11L 11L 11H 11H 6L 6L 6H 6H 12L 12L 12H 12H 13L 13L 13H 13H 7L 7L 7H 7H 14L 14L 14H 14H 15L 15L 15H 15H 8L 8L 8H 8H 16L 16L 16H 16H L EGENDA CANALE QUASI CERTAMENTE INTERFERITO SITUAZIONI DUBBIE (INTERFERENTI DI PICCOLA INTENSITA' E/O PROVENIENTI DA DIREZIONI LONTANE DALLA DIREZIONE DI COLLEGAMENTO) CANALE DISPONIBILE

14 Sisem /3 drive-test A broad spectrum of services supporting mobile networks implementation, development and optimization

15 ABSTRACT Drive-tests are activities to monitor and verify the performances of a mobile network, considering the usual conditions of a constumer use (customer experience) Test results can be used to: optimize the design of a radio network readjustment based on the user s preferences (performance benchmarking) resolution of punctual problems (troubleshooting) verification of the performances after a radio upgrade or a technological intervention

16 Usually the activity is carried out on board of specifically equipped vehicles, but it can also be done by means of handheld devices, particularly to test the performances of a network in an indoor environment Method of investigation

17 SISEM proposes two Drive Test solutions Method of investigation Automatic Testing Platform SMART AGENT - See sisem products presentation - Active Platform Nemo

18 Active Platform Nemo Technology based - Made by Anite - Method of investigation Nemo Outdoor Nemo Handy Nemo Analyze

19 In short Interfering Signals Sweep - intra-system (PIM) - external - Troubleshooting LOS/MIM - Optical - electromagnetic - Interferential measurements Drive Test - Optimization - Smart Agent Platform - Nemo Platform

20 SISEM SO IT WORKS Contacts