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Wzory z Teorii Ruchu x(t) = ¢¡¤£¦¥¨§©£¦ ¢ !¢"#¨!%$'&)(10¤& – 2435687¦9¦@¢AB2B7 C D1E8D1FGIH8PQRE S'TVU instantaneous traffic intensity ) WYX = `acbed1fgbehiprq¢beigs'tvu time interval ) T = czas obserwacji ( observation time, time period, total time considered ) Q = w4xy1
¢1 traffic volume, NOT traffic load ) x(t) x1 xL x2 … ∆t1 ∆t2 ∆t L … t 1 L x(t) x1 xM x2 … ∆t ∆t ∆t … t 1 M x(t) dt t x(t) dt dt dt dt dt dt dt dt T ( ) ∑ = ⋅ = L 1 i i i Y x Q Y x Q M 1 j j ⋅ = ∑ = ∫ = T 0 dt x(t) Q A = g d1ef¨dhg¢ij1kiml traffic, traffic intensity, traffic flow, traffic load ) – npo¢q1rst¨qu average ) x(t) t T A Q T A Q ⋅ = T Q A = C = v¨w¨x¢y{z}|~g~¦|
8 1¢g1 ¢ee¨ number of calls/occupations in period T ) hi = czas trwania i- '¢8 ¤¡¢1£¢¤g1¥¦¨§V¨ holding time of i:th call = of i:th occupation ) h = ©ª{«8¬®¯g° ±²³¤´1µ¶¨·¹¸ holding time, call duration ) – º»¢´1¼µ¶½¸ average ) h 1 1 t C 1 1 1 h 2 h C . . . . . . h 1 t h 2 h C h C Q . . . ∑ = = C 1 i i h Q ( ) ∑ = ⋅ = C 1 i [min] i ] [ [PM] h 1 Q ¾¿ À h C Q ⋅ = C Q h = N = Á¨Â¨Ã¢Ä{Å}ÆÇBÈ1âÄ{ÉÊËʦ¨ȢÄeÃ1ÌVÍ number of trunks/devices in a group ) Î i = ÏBÐÑ Ò¢ÓeÔÕÖ×Ò¢ÓeØeÙÚÓeØÜÛÞÝß'à½áÒ1â8â - ß'ã¢ä8àæåçeÒ¢ÓeØèÒ¢ÓeØeÙâ¨ãéê total occupation time of i:th device ) ë = ì í¢î1ïðñ½òó{ô8õYó{ô÷öø¢ùúûpò1ñ8ü4ýò÷ó{ô¹þ average occupation time per device ) ÿ 1 1 t N 1 1 1 ÿ 2 ÿ N . . . . . . t N Q ¡ 1 ¡ 2 ¡ N . . . ∑ = = N 1 i i ¢ Q ( ) ∑ = ⋅ = N 1 i [min] i ] [ [PM] ¢ 1 Q £¥¤ ¦ ¢ N Q ⋅ = N Q ¢ = ( ) ∑ = ⋅ ⋅ = L 1 i i i §©¨ x T 1 A ∑ = ⋅ = C
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