Tetra

‫‪a‬‬ ‫

‬ ‫ا

م ا ا‬

‫‪Terrestrial Trunked Radio :‬‬ ‫‪TETRA‬‬

‫ﳏﻤﺪ ﳒﻴﺐ ﺻﻼﺣﻮ‬ ‫

‪:‬‬

‫ﺣﺎﺯﻡ ﲪﺎﻣﻲ‬

‫إ اد ا ب ‪:‬‬

‫ﻋﺎﺩﻝ ﺧﻮﺍﲤﻲ‬

‫ ‪ :‬‬

: TETRA ‍ ďş—ďťŒďşŽďťłďť’ ďş?ďť&#x;ďť¨ďťˆďşŽďťĄ ďş?ďť&#x;ﺎ‏ :

digital Private Mobile Radio = PMR

:

!

Public Access Mobile Radio =PAMR

, !( , 4 5'3 - 6 , 2 3 , '() * + , - . / (*01 "# $ %& ! , ; (#7 & ) , : , , 8 9 , / 7 - 6 . etc , ?6 , <= > D(' (D CA H DE F G 5 B (5

TETRA

@ A ( B C D

?I 6 L < M# A J :! , ) =J ! , )& <

. ?IJ >A . ! A > J >AJ B=7 (*01 L1 TETRA ( B . 8S ! O >& $ N O4 50 O; DP D P / D Q A O C 6 A R N D "#

(D CA "9 / 6 (IP Protocol) T A U ) ? > T ? >

. 5 & ! "9& 5 V C # SW& )

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/N $ A U = 3 / G* C D TETRA ( B EXW# $A 6 L Y= 0 "

Z , Z

Z L [ \ B ]^ 2 _A U C / N , N . MD(' . $A 6 L :

TETRA

( B PE D

. ; N^ N(9& -1 . a V 9 / N b c 6 LJ G# A -2 . OP"67 a& ( - >AJ & -3 . (circuit) Y 0G9 !1 (packet) Y 0 B=d& = -4 . ;E;@ * 1 V E D ! -5 .X 7 / N 6 & D ! -6 : T 1 TETRA ( B e VŮ&#x17D; 9gD TDMA=Time Division Multiple Access : EX1 h i

C D $ k ! ! b ;;@ /N 25KHz D ;E;(A 0 , L ! ;;(A ?" j a V 9 & 1 0 . ;;@ * 1 Ů&#x2039; V

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: ;;@ PE L m >V & (96)01 ? ( ERC - B Y . &! !1 H ّ

- >A B= D1 H n C Vَ 9o (393-390)MHz ! (280-383)MHz : ;;@ PE L m >V & (96)04 ? ( ERC - B Y 0

! (470-450)MHz ! (921-915/876-870)MHz ! (410-430)MHz . &! !1 H ّ E = ( - >AJ B=1 H Vَ 9o (399.9-395/390-385)MHz mq>َVُA U / N . ]^ s ;;@ PE L TETRA ( B ?o9 gD . u(:7 ! ) < M 9 ! , t C t9L a V 9 . u(:7 ) v% V 9w - >AJ < C 9D TETRA ( B e V 9 EX^ : TETRA ( B x oD . (:y V 9w V 9 - >A -1 - >AJ & ) V 9 z "6 C{A | C= H /D; 6 a e Vَ 9 / N \w V 9 - >A -2 . ( B E 8 V X!; OP"67 a& (

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. TETRA â&#x20AC;« ا Ù&#x2026; اâ&#x20AC;¬

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. J >A / Â&#x20AC; 0 $ (# Ů&#x2039; > E>: ?q g> TETRA ( B :X1 < C 9A L ! z "6 - : / # . Ů&#x2018; z "6 ]^ Ů&#x2039; ( Ů&#x2039;J >A Â (Â&#x201A; -1 . z "6 ]^ Â&#x192;; Â&#x201E; Â (Â&#x201A; -2 . /D(:Â&#x2026; ]^ Â&#x2020; (A -3 . u eL R N N 0 z Â&#x2021;3 z "6 / (*01 Â&#x2C6; / " 1 X D $ k ! :TETRA ( B $ x A . z C{S X _Â&#x2030; H $ k ! ) : ; D V 9 Â d& - >AJ -1 . L ! Ů?Xy H V 9 100 ]^ >D a V 9 / ; & - >AJ -2 : GD & !7 J >AJ " u 2q( o TETRA ( B Institute European Telecommunications Standard : u(:7 ) /N TETRA ( B PE A O; DP& #!( /0 7 H R L s S & Ů&#x2039; N 9 > Â&#x2039; $ k ! 4 S _ GÂ&#x192;dA 4 { ^ R N I & : * " # 4 S _ 9= . 4 < ! C -6-

:â&#x20AC;Ť &Ů&#x20AC;â&#x20AC;ŹP6 = ! 5> ! mÂ&#x2020; > / D @ A B ! Xy H a V 9 O N < - >A3 (# D 0 (:y  D; z "6 !  D; z "6 a& - >A3 / Â?D -1 . (Multicast) L . = Â&#x192; 0.3 / 1 - >AJ 4 )=^ N(9& P D -2 : !;P +>= !1 !;P aC u LW& ?N D-3 (Duplex & Half Duplex) : 5A c ) < [C& / Â&#x17D; -4 PSTN = Public Switched Telephone Network . Â? 1 R N [ # Â? ?

A J -5 . 28.8 KB/s [ # C = - -6 . !1 = ?N; = ^ -7

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Configuration of TETRA :

. 1 D D; CÂ&#x201E; Â&#x2019; A U ! , N / + d A TETRA ( B & EX1 Â&#x2018;L = < v% ! ?

D [=W# V J " mobile communication ?D A 61 / . 9 ' { !("0 ^ !1 & 0 MD(' /N Â&#x201C; "_ & .

9 OG 0 D ( ) ;E!PA X1 / Â&#x17D; O N 0 !

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: ‫ﺍﳌﺮﺍﺟﻊ‬ : ‫ﺍﳌﻮﺍﻗﻊ ﺍﻷﺟﻨﺒﻴﺔ‬ • http://www.tetramou.com/

: ‫ﺍﳌﻮﺍﻗﻊ ﺍﻟﻌﺮﺑﻴﺔ‬ • http://www.4electron.com/

: ‫ﺍﻟﻜﺘﺐ‬

• Principles of Digital Communication Systems and Computer Networks

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