林業無線對講系統解決方案

行業背景 

林(lin)業系統(tong)承擔著保護國(guo)家森林(lin)資源以及促進(jin)林(lin)業經濟健康發展的(de)重要(yao)責任。我國(guo)的(de)林(lin)區(qu)具有集中性(xing)強和單位(wei)面(mian)積廣袤(mao)的(de)特點(dian)，一旦發生災害性(xing)事故(gu)，需要(yao)緊急(ji)時間排查(cha)危險源并對危險區(qu)域進(jin)行定位(wei)。林(lin)業工作對于通信的(de)需求日益突出。

林(lin)業通(tong)(tong)信(xin)系(xi)統(tong)建(jian)設以(yi)數字超(chao)短波技(ji)術(shu)、無線鏈(lian)路(lu)組(zu)網技(ji)術(shu)、視(shi)頻傳(chuan)輸技(ji)術(shu)等形(xing)成(cheng)的通(tong)(tong)信(xin)網絡(luo)為基礎，著力構(gou)建(jian)空中與地(di)面、有線與無線、固定與機(ji)動相結合的鏈(lian)式、立體應急通(tong)(tong)信(xin)系(xi)統(tong)，全面提高森林(lin)防火(huo)(huo)通(tong)(tong)信(xin)的覆蓋率和傳(chuan)遞(di)率，確保在(zai)發生(sheng)森林(lin)火(huo)(huo)災(zai)時，能夠使用多(duo)種通(tong)(tong)信(xin)手(shou)段保障火(huo)(huo)災(zai)信(xin)息傳(chuan)輸暢通(tong)(tong)，從而(er)最|大限度減少森林(lin)火(huo)(huo)災(zai)的損失(shi)程度。

為解決林(lin)業工作(zuo)(zuo)日(ri)益增長(chang)的通信需求，提升林(lin)業工作(zuo)(zuo)者的工作(zuo)(zuo)效率，達到統一(yi)(yi)指揮(hui)的目的，海能(neng)達專門為林(lin)業用(yong)戶(hu)提供了一(yi)(yi)套滿足全省聯網(wang)、可(ke)靠(kao)性高、使用(yong)簡單、功能(neng)強大的數(shu)字(zi)無線通訊系統——數(shu)字(zi)IP互聯系統和(he)PDT數(shu)字(zi)同播系統。

解決方案

通(tong)(tong)(tong)(tong)過仔細研究分析林(lin)業用(yong)戶通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)需求(qiu)，提供了一套完善(shan)的(de)(de)(de)數字(zi)無線通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)系(xi)統(tong)解決方案(an)。森(sen)林(lin)防(fang)(fang)(fang)火(huo)數字(zi)超短(duan)波無線通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)通(tong)(tong)(tong)(tong)過建設(she)省、市(shi)(shi)(shi)級(ji)調(diao)(diao)(diao)度(du)管(guan)(guan)理(li)控(kong)制(zhi)中(zhong)心，縣（區(qu)、市(shi)(shi)(shi)）二級(ji)調(diao)(diao)(diao)度(du)中(zhong)心，在重點森(sen)林(lin)防(fang)(fang)(fang)火(huo)地區(qu)（山(shan)區(qu)）建設(she)固定基站(zhan)，移動基站(zhan)，軟件管(guan)(guan)理(li)平臺(tai)構建綜合性的(de)(de)(de)無線通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)系(xi)統(tong)，形成(cheng)全省聯網的(de)(de)(de)省、市(shi)(shi)(shi)、縣（區(qu)、市(shi)(shi)(shi)）三級(ji)森(sen)林(lin)防(fang)(fang)(fang)火(huo)指揮(hui)調(diao)(diao)(diao)度(du)網絡框架，在系(xi)統(tong)覆蓋范(fan)(fan)圍(wei)內，能夠確保(bao)全省的(de)(de)(de)通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)并且以縣（區(qu)、市(shi)(shi)(shi)）及林(lin)場為單(dan)位建立(li)多(duo)個子(zi)網，各子(zi)網可以單(dan)獨通(tong)(tong)(tong)(tong)信(xin)(xin)(xin)且不占用(yong)其他子(zi)網的(de)(de)(de)信(xin)(xin)(xin)道資源。省、市(shi)(shi)(shi)、縣（區(qu)、市(shi)(shi)(shi)）級(ji)調(diao)(diao)(diao)度(du)管(guan)(guan)理(li)控(kong)制(zhi)中(zhong)心對所轄范(fan)(fan)圍(wei)內各地森(sen)林(lin)防(fang)(fang)(fang)護人(ren)員終(zhong)端進(jin)行遠程調(diao)(diao)(diao)度(du)管(guan)(guan)理(li)，包括呼(hu)叫控(kong)制(zhi)功能（個呼(hu)、組呼(hu)、全呼(hu)、緊急報警等），數據應用(yong)管(guan)(guan)理(li)（短(duan)信(xin)(xin)(xin)息(xi)發送、GPS定位信(xin)(xin)(xin)息(xi)、考勤管(guan)(guan)理(li)等），同時，系(xi)統(tong)可通(tong)(tong)(tong)(tong)過IP網絡對各基站(zhan)的(de)(de)(de)運行狀態(tai)進(jin)行檢(jian)查并且維(wei)護基站(zhan)配置參數。

PDT同播系統

PDT同播系(xi)(xi)(xi)統(tong)(tong)(tong)是一種分(fen)區覆(fu)蓋的(de)(de)廣域(yu)通(tong)信系(xi)(xi)(xi)統(tong)(tong)(tong)，借(jie)助于多個基站(zhan)實現比單基站(zhan)系(xi)(xi)(xi)統(tong)(tong)(tong)更(geng)廣闊的(de)(de)通(tong)信覆(fu)蓋范圍，系(xi)(xi)(xi)統(tong)(tong)(tong)中(zhong)各個基站(zhan)接收頻率及發射頻率一致，因此系(xi)(xi)(xi)統(tong)(tong)(tong)的(de)(de)頻譜利用(yong)(yong)率高(gao)，移(yi)動用(yong)(yong)戶在跨基站(zhan)漫游(you)時(shi)不(bu)用(yong)(yong)越(yue)區切換，不(bu)用(yong)(yong)進行(xing)位置登記，也不(bu)存在掉話現象。整個系(xi)(xi)(xi)統(tong)(tong)(tong)不(bu)像(xiang)集群蜂窩小區通(tong)信那(nei)樣需(xu)要復(fu)雜(za)的(de)(de)信令(ling)系(xi)(xi)(xi)統(tong)(tong)(tong)，系(xi)(xi)(xi)統(tong)(tong)(tong)結構簡單，適用(yong)(yong)于林業用(yong)(yong)戶占用(yong)(yong)頻率資源(yuan)少、覆(fu)蓋范圍大(da)、通(tong)信業務(wu)量低的(de)(de)應用(yong)(yong)。 

數字IP互聯系統

IP 互聯的基本原理是(shi)通過(guo)基于(yu)TCP/IP協議的以太(tai)網將分散的多個中轉臺連(lian)接起(qi)來，從而實現更廣的通信(xin)覆蓋范(fan)圍(wei)(wei)。系統結構簡單，適用于(yu)林(lin)業(ye)用戶大范(fan)圍(wei)(wei)多基站組網應用。

特點：

?均能提(ti)供豐富(fu)的(de)業務功能，如(ru)：單呼(hu)/組呼(hu)/全(quan)呼(hu)/模數兼容/緊(jin)急呼(hu)叫(jiao)/緊(jin)急報警/遙(yao)(yao)暈/遙(yao)(yao)斃/終端檢查/環境監聽(ting)/故障弱化等；

?均(jun)采(cai)用全IP組(zu)網，支持多種傳輸鏈路（IP、E1、無線鏈路等）；

?終端可以無縫漫游，打火救援(yuan)使用方便；

?調度多(duo)極化，支持分層分級管理(li)；

?完(wan)善的互(hu)(hu)聯互(hu)(hu)通功能，系(xi)(xi)統(tong)可以通過各(ge)種網關來與(yu)其他系(xi)(xi)統(tong)互(hu)(hu)聯；

?支持(chi)星型(xing)、串型(xing)、樹型(xing)、環型(xing)等(deng)多種組(zu)網形態

?提供二次開(kai)發接口，便于用(yong)(yong)戶進行個性開(kai)發，擴(kuo)展更多種類的(de)數(shu)據應用(yong)(yong)業務(wu)；

?PDT同播系(xi)統(tong)全網只需一(yi)對頻點(dian)，解決(jue)林區多站(zhan)建設頻點(dian)資(zi)源緊張的問(wen)題，可(ke)有效解決(jue)信(xin)號(hao)在重疊(die)覆(fu)蓋區的同頻干擾問(wen)題，實現全省林業系(xi)統(tong)通信(xin)覆(fu)蓋；

方案拓撲圖