{"id":9860,"date":"2021-12-14T19:39:47","date_gmt":"2021-12-14T17:39:47","guid":{"rendered":"http:\/\/journals.khnu.km.ua\/vestnik\/?p=9860"},"modified":"2022-01-26T14:12:41","modified_gmt":"2022-01-26T12:12:41","slug":"doslidzhennya-proczedury-pochatkovogo-dostupu-do-merezhi-zvyazku-pyatogo-pokolinnya","status":"publish","type":"post","link":"https:\/\/journals.khnu.km.ua\/vestnik\/?p=9860","title":{"rendered":"\u0414\u043e\u0441\u043b\u0456\u0434\u0436\u0435\u043d\u043d\u044f \u043f\u0440\u043e\u0446\u0435\u0434\u0443\u0440\u0438 \u043f\u043e\u0447\u0430\u0442\u043a\u043e\u0432\u043e\u0433\u043e \u0434\u043e\u0441\u0442\u0443\u043f\u0443 \u0434\u043e \u043c\u0435\u0440\u0435\u0436\u0456 \u0437\u0432\u2019\u044f\u0437\u043a\u0443 \u043f\u2019\u044f\u0442\u043e\u0433\u043e \u043f\u043e\u043a\u043e\u043b\u0456\u043d\u043d\u044f"},"content":{"rendered":"

<\/p>\n

\u0414\u041e\u0421\u041b\u0406\u0414\u0416\u0415\u041d\u041d\u042f \u041f\u0420\u041e\u0426\u0415\u0414\u0423\u0420\u0418 \u041f\u041e\u0427\u0410\u0422\u041a\u041e\u0412\u041e\u0413\u041e \u0414\u041e\u0421\u0422\u0423\u041f\u0423 \u0414\u041e \u041c\u0415\u0420\u0415\u0416\u0406 \u0417\u0412\u2019\u042f\u0417\u041a\u0423 \u041f\u2019\u042f\u0422\u041e\u0413\u041e \u041f\u041e\u041a\u041e\u041b\u0406\u041d\u041d\u042f<\/p>\n

RESEARCH OF THE PROCEDURE OF INITIAL ACCESS TO THE FIFTH GENERATION COMMUNICATION NETWORK<\/p>\n

\u0421\u0442\u043e\u0440\u0456\u043d\u043a\u0438: <\/strong>141-149<\/strong>. \u041d\u043e\u043c\u0435\u0440: \u21165, 2021 (301)<\/strong> \"\"<\/a>
\n\u00a0<\/strong>\u0410\u0432\u0442\u043e\u0440\u0438:<\/strong>
\n\u041f\u042f\u0422\u0406\u041d \u0406.\u0421.
\n\u0425\u043c\u0435\u043b\u044c\u043d\u0438\u0446\u044c\u043a\u0438\u0439 \u043f\u043e\u043b\u0456\u0442\u0435\u0445\u043d\u0456\u0447\u043d\u0438\u0439 \u0444\u0430\u0445\u043e\u0432\u0438\u0439 \u043a\u043e\u043b\u0435\u0434\u0436 \u043d\u0430\u0446\u0456\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u0443\u043d\u0456\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0443 \u00ab\u041b\u044c\u0432\u0456\u0432\u0441\u044c\u043a\u0430 \u043f\u043e\u043b\u0456\u0442\u0435\u0445\u043d\u0456\u043a\u0430\u00bb
\nORCID ID: 0000-0003-1898-6755,\u00a0 e-mail: ilkhmel@ukr.net
\n\u041c\u0410\u041a\u0410\u0420\u0418\u0428\u041a\u0406\u041d \u0414.\u0410.
\n\u0425\u043c\u0435\u043b\u044c\u043d\u0438\u0446\u044c\u043a\u0438\u0439 \u043d\u0430\u0446\u0456\u043e\u043d\u0430\u043b\u044c\u043d\u0438\u0439 \u0443\u043d\u0456\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442
\nORCID ID: 0000-0003-3447-811X,\u00a0 e-mail: makaryshkin@ukr.net
\n\u041c\u0406\u0428\u0410\u041d \u0412.\u0412.
\n\u0425\u043c\u0435\u043b\u044c\u043d\u0438\u0446\u044c\u043a\u0438\u0439 \u043d\u0430\u0446\u0456\u043e\u043d\u0430\u043b\u044c\u043d\u0438\u0439 \u0443\u043d\u0456\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442
\nORCID ID: 0000-0002-8505-2648,\u00a0 e-mail: v_mishan@ukr.net
\n\u0428\u041f\u0406\u0420\u0423\u041a \u041c.\u0421.
\n\u0425\u043c\u0435\u043b\u044c\u043d\u0438\u0446\u044c\u043a\u0438\u0439 \u043d\u0430\u0446\u0456\u043e\u043d\u0430\u043b\u044c\u043d\u0438\u0439 \u0443\u043d\u0456\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442
\nORCID ID: 0000-0002-2983-3781, e-mail: shpiruk1809@gmail.com
\nPYATIN I.S.
\nKhmelnytsky\u0456 Politechnic Professional College of Lviv Politechnic National University
\nMAKARYSHKIN D.A., MISHAN V.V., SHPIRUK M.S.
\nKhmelnytskyi National University
\nDOI:<\/strong> https:\/\/www.doi.org\/10.31891\/2307-5732-2021-301-5-141-149<\/a>
\n\u0420\u0435\u0446\u0435\u043d\u0437\u0456\u044f\/Peer review <\/strong>: 10.09.2021\u0440.
\n\u041d\u0430\u0434\u0440\u0443\u043a\u043e\u0432\u0430\u043d\u0430\/Printed :<\/strong> 10.10.2021 \u0440.<\/p>\n

\u0410\u043d\u043e\u0442\u0430\u0446\u0456\u044f \u043c\u043e\u0432\u043e\u044e \u043e\u0440\u0438\u0433\u0456\u043d\u0430\u043b\u0443<\/strong><\/p>\n

\u00a0<\/strong>\u0412\u0438\u043c\u043e\u0433\u0438 \u0434\u043e \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0456\u0437\u0430\u0446\u0456\u0457 \u0441\u0438\u0441\u0442\u0435\u043c\u0438 \u0437\u0432\u2019\u044f\u0437\u043a\u0443 5G \u0432\u0440\u0430\u0445\u043e\u0432\u0443\u044e\u0442\u044c \u0440\u043e\u0431\u043e\u0442\u0443 \u0437 \u0432\u0438\u0441\u043e\u043a\u043e\u044e \u0448\u0432\u0438\u0434\u043a\u0456\u0441\u0442\u044e \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0456 \u0434\u0430\u043d\u0438\u0445, \u043c\u0435\u043d\u0448\u043e\u044e \u0437\u0430\u0442\u0440\u0438\u043c\u043a\u043e\u044e \u0442\u0430 \u043f\u0456\u0434\u0432\u0438\u0449\u0435\u043d\u0438\u043c \u0443\u0449\u0456\u043b\u044c\u043d\u0435\u043d\u043d\u044f\u043c. \u041f\u043e\u0448\u0443\u043a \u043a\u043e\u043c\u0456\u0440\u043a\u0438 \u2013 \u0446\u0435 \u043f\u0440\u043e\u0446\u0435\u0434\u0443\u0440\u0430, \u0437\u0430 \u0434\u043e\u043f\u043e\u043c\u043e\u0433\u043e\u044e \u044f\u043a\u043e\u0457 \u043e\u0431\u043b\u0430\u0434\u043d\u0430\u043d\u043d\u044f \u043a\u043e\u0440\u0438\u0441\u0442\u0443\u0432\u0430\u0447\u0430 (UE) \u043e\u0442\u0440\u0438\u043c\u0443\u0454 \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0456\u0437\u0430\u0446\u0456\u044e \u0447\u0430\u0441\u0443 \u0442\u0430 \u0447\u0430\u0441\u0442\u043e\u0442\u0438 \u0437 \u0431\u0430\u0437\u043e\u0432\u043e\u044e \u0441\u0442\u0430\u043d\u0446\u0456\u0454\u044e \u0442\u0430 \u0434\u0435\u043a\u043e\u0434\u0443\u0454 \u0456\u0434\u0435\u043d\u0442\u0438\u0444\u0456\u043a\u0430\u0442\u043e\u0440 \u043a\u043e\u043c\u0456\u0440\u043a\u0438 \u043c\u043e\u0431\u0456\u043b\u044c\u043d\u043e\u0433\u043e \u043f\u0440\u0438\u0441\u0442\u0440\u043e\u044e. \u0423 \u0440\u043e\u0431\u043e\u0442\u0456 \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u043e \u0434\u043e\u0441\u043b\u0456\u0434\u0436\u0435\u043d\u043d\u044f \u043f\u0440\u043e\u0446\u0435\u0434\u0443\u0440\u0438 \u043f\u043e\u0448\u0443\u043a\u0443 \u043a\u043e\u043c\u0456\u0440\u043a\u0438, \u043c\u043e\u0434\u0435\u043b\u0456 \u0432\u0456\u0434\u043d\u043e\u0432\u043b\u0435\u043d\u043d\u044f \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0456\u0437\u0430\u0446\u0456\u0457 \u0441\u0438\u043c\u0432\u043e\u043b\u0456\u0432 \u0456 \u0444\u0440\u0435\u0439\u043c\u0456\u0432 \u0443 \u0441\u0438\u0441\u0442\u0435\u043c\u0456 QPSK, \u043f\u043e\u0440\u0443\u0448\u0435\u043d\u0443 \u0447\u0435\u0440\u0435\u0437 \u0437\u043c\u0456\u043d\u043d\u0443 \u043f\u043e\u043c\u0438\u043b\u043a\u0443 \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0456\u0437\u0430\u0446\u0456\u0457. \u041f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u043e \u0434\u043e\u0441\u043b\u0456\u0434\u0436\u0435\u043d\u043d\u044f \u0444\u043e\u0440\u043c\u0443\u0432\u0430\u043d\u043d\u044f \u0440\u0430\u0434\u0456\u043e\u043c\u043e\u0432\u043d\u043e\u0433\u043e \u043a\u0430\u043d\u0430\u043b\u0443 \u043d\u0430 \u0444\u0456\u0437\u0438\u0447\u043d\u043e\u043c\u0443 \u0440\u0456\u0432\u043d\u0456.
\n\u041a\u043b\u044e\u0447\u043e\u0432\u0456 \u0441\u043b\u043e\u0432\u0430:<\/strong> \u043f\u043e\u0448\u0443\u043a \u043a\u043e\u043c\u0456\u0440\u043a\u0438, \u043f\u0435\u0440\u0432\u0438\u043d\u043d\u0438\u0439 \u0441\u0438\u0433\u043d\u0430\u043b \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0456\u0437\u0430\u0446\u0456\u0457, \u0432\u0442\u043e\u0440\u0438\u043d\u043d\u0438\u0439 \u0441\u0438\u0433\u043d\u0430\u043b \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u0456\u0437\u0430\u0446\u0456\u0457, \u0440\u0430\u0434\u0456\u043e\u043c\u043e\u0432\u043d\u0438\u0439 \u043a\u0430\u043d\u0430\u043b, \u043a\u0430\u043d\u0430\u043b \u0434\u043e\u0432\u0456\u043b\u044c\u043d\u043e\u0433\u043e \u0434\u043e\u0441\u0442\u0443\u043f\u0443.<\/p>\n

\u0420\u043e\u0437\u0448\u0438\u0440\u0435\u043d\u0430 \u0430\u043d\u043e\u0442\u0430\u0446\u0456\u044f \u0430\u043d\u0433\u043b\u0456\u0439\u0441\u044c\u043a\u043e\u044e \u043c\u043e\u0432\u043e\u044e<\/strong><\/p>\n

Traditional mobile networks have bandwidth and infrastructure limitations. Each base station has a limited number of users and data capacity. 5G technology uses advanced technologies, such as massive MIMO and beamforming, to increase data rates and spectrum efficiency. These features, and the large number of small cells, allow many 5G users to receive low latency and high traffic without overloading the base station. Small cells work the same way as regular cells, but use new technology and millimetre waves (5G New Radio). Low-power base stations can be easily deployed. Cell search is a procedure by which the user equipment (UE) obtains time and frequency synchronization with the base station and decodes the cell ID of the mobile device. System information is broadcast information that is periodically transmitted by the base station on the downlink. This is very important information for the mobile device (UE) needed to connect to the base station (gNB). The UE reads system information to determine the location of mobile devices when turned on, to select and re-select a cell. System information provides the following information: system frame number, system bandwidth, PLMN, mobile subscriber selection and redial thresholds, etc., required to access the network. Physical Cell ID (PCI) is used to distinguish mobile devices in the network radio communication. PLMN (Public land Mobile Network) – mobile network service area. Is a set of all mobile devices of one cellular network operator. The UE scans the bandwidth in the sync raster. The synchronization raster indicates the frequency positions of the synchronization unit that can be used by the UE to detect the system when there is no explicit indication of the position of the synchronization unit. In the next step, the UE decodes the primary and secondary synchronization signals to obtain the Physical Cell ID (PCI) and the DMRS PBCH. The base station transmits SSB packets that contain one SSB per beam. The beam direction changes for each SSB transmission. The following steps are performed to complete the synchronization procedure. The UE selects the preferred beam and decodes the PBCH MIB information, such as SFN, SSB index, raster offset, default DL numerology, RMSI configuration, DM-RS location, and cell prohibition information. If the cell is not locked, the UE attempts to decode the physical downlink control channels (PDCCH) to obtain the frequency location of the PDSCH resources. A study of the model of restoring the synchronization of symbols and frames in the QPSK system, caused by a variable synchronization error. A study of the formation of the radio channel at the physical level.
\nKeywords:<\/strong> Cell search, Primary synchronization signal, Secondary synchronization signal, Broadcast channel, Random access channel.<\/p>\n

References<\/strong><\/p>\n

    \n
  1. Piatin I.S. Systema zviazku z QPSK moduliatsiieiu i synkhronizatsiieiu nesuchoi \/ I.S. Piatin, V.V. Mishan, O.O. Kukharets \/\/ Herald of Khmelnytskyi National University. Technical sciences. \u2013 2019. – \u2116 5. – S. 211-217<\/li>\n
  2. Pyatin I. Investigation of signals distortion during interpolation in SDR transmitters with QPSK modulation \/ J. Boiko, I. Pyatin, O. Eromenko, Parkhomey \/\/ Adaptive systems of automatic control. \u2013 2019 \u2013 \u2116 1 (34). \u2013 \u0420. 5\u201315.<\/li>\n
  3. Piatin I.S. Porivnialnyi analiz detektoriv pomylky symvolnoi synkhronizatsii koherentnoi systemy tsyfrovoho zviazku z moduliatsiieiu QPSK \/ J.M. Boiko I.S. Piatin \/\/ Naukovyi zhurnal Zviazok. \u2013 2019. \u2013 \u2116 6. \u2013 S. 12-18.<\/li>\n
  4. Piatin I.S. Doslidzhennia synkhronizatsii tsyfrovykh system zviazku \/ I.S. Piatin, I.Iu. Kukal \/\/ Herald of Khmelnytskyi National University. Technical sciences. \u2013 \u2013 \u2116 5. \u2013 S. 175-183.<\/li>\n
  5. Boiko J., Pyatin I., Karpova L., Eromenko O. (2021) Study of the Influence of Changing Signal Propagation Conditions in the Communication Channel on Bit Error Rate. In: Ageyev D., Radivilova T., Kryvinska N. (eds) Data-Centric Business and Applications. Lecture Notes on Data Engineering and Communications Technologies, vol 69. Springer, Cham. https:\/\/doi.org\/10.1007\/978-3-030-71892-3_4<\/li>\n
  6. Piatin I.S. Peredacha upravliaiuchoi informatsii u systemakh shyrokosmuhovykh telekomunikatsii tekhnolohii 5G \/ J. Boiko, I. Piatin, L. Karpova, I. Parkhomei \/\/ Mizhvidomchyi naukovo-tekhnichnyi zbirnyk \u00abAdaptyvni systemy avtomatychnoho upravlinnia\u00bb, 2021 \u2013 \u2116 1 (38). \u2013 S. 82-95. DOI: \/\/doi.org\/10.20535\/1560-8956.38.2021.233200<\/li>\n
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  8. Boiko J., Pyatin I., Eromenko O. and Barabash O. Methodology for Assessing Synchronization Conditions in Telecommunication Devices, Advances in Science, Technology and Engineering Systems Journal, vol. 5(2), pp. 320-327, March 2020. DOI:\u00a010.25046\/aj050242.<\/li>\n
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