林業無線對講系統解決方案

行業背景 

林業系統承擔著保護國家森(sen)林資(zi)源(yuan)以及(ji)促(cu)進林業經濟健康發(fa)(fa)展的(de)(de)(de)重要(yao)責(ze)任。我國的(de)(de)(de)林區具(ju)有集中性強和單(dan)位(wei)面積廣袤的(de)(de)(de)特(te)點，一旦(dan)發(fa)(fa)生(sheng)災害(hai)性事(shi)故(gu)，需(xu)(xu)要(yao)緊急時(shi)間排(pai)查危(wei)險源(yuan)并(bing)對(dui)危(wei)險區域進行定(ding)位(wei)。林業工作對(dui)于通信的(de)(de)(de)需(xu)(xu)求日益突出。

林(lin)業通(tong)(tong)信(xin)系統建設以數字超短波技術(shu)(shu)、無(wu)線鏈路組網技術(shu)(shu)、視頻傳(chuan)(chuan)(chuan)輸技術(shu)(shu)等形成的通(tong)(tong)信(xin)網絡為基礎，著力(li)構建空中與地面、有線與無(wu)線、固定與機動相結合的鏈式、立體應急(ji)通(tong)(tong)信(xin)系統，全面提(ti)高森林(lin)防火通(tong)(tong)信(xin)的覆蓋率和(he)傳(chuan)(chuan)(chuan)遞率，確保在發生森林(lin)火災(zai)時，能夠使用多(duo)種通(tong)(tong)信(xin)手段保障火災(zai)信(xin)息傳(chuan)(chuan)(chuan)輸暢通(tong)(tong)，從而最(zui)|大限度減少森林(lin)火災(zai)的損(sun)失(shi)程度。

為解決林業(ye)工(gong)作(zuo)日益增長的通(tong)信需求，提升林業(ye)工(gong)作(zuo)者的工(gong)作(zuo)效(xiao)率，達到統一指揮的目的，海能(neng)達專門為林業(ye)用戶(hu)提供了一套滿足全省聯網、可靠性(xing)高、使用簡(jian)單、功(gong)能(neng)強(qiang)大的數字(zi)無線通(tong)訊(xun)系(xi)統——數字(zi)IP互聯系(xi)統和PDT數字(zi)同(tong)播系(xi)統。

解決方案

通(tong)(tong)(tong)(tong)(tong)過仔細研究分析林(lin)(lin)(lin)(lin)業用(yong)戶通(tong)(tong)(tong)(tong)(tong)信(xin)(xin)需求，提(ti)供了一套完善的數(shu)字無線通(tong)(tong)(tong)(tong)(tong)信(xin)(xin)系統解(jie)決方案(an)。森林(lin)(lin)(lin)(lin)防火數(shu)字超(chao)短波(bo)無線通(tong)(tong)(tong)(tong)(tong)信(xin)(xin)通(tong)(tong)(tong)(tong)(tong)過建(jian)設(she)省(sheng)、市(shi)(shi)級(ji)調(diao)(diao)度(du)(du)管(guan)理(li)控(kong)制中(zhong)(zhong)心，縣(xian)（區(qu)(qu)、市(shi)(shi)）二級(ji)調(diao)(diao)度(du)(du)中(zhong)(zhong)心，在重點(dian)森林(lin)(lin)(lin)(lin)防火地區(qu)(qu)（山區(qu)(qu)）建(jian)設(she)固(gu)定基(ji)站，移動基(ji)站，軟(ruan)件管(guan)理(li)平臺(tai)構建(jian)綜合性的無線通(tong)(tong)(tong)(tong)(tong)信(xin)(xin)系統，形成全(quan)省(sheng)聯網(wang)(wang)的省(sheng)、市(shi)(shi)、縣(xian)（區(qu)(qu)、市(shi)(shi)）三(san)級(ji)森林(lin)(lin)(lin)(lin)防火指揮調(diao)(diao)度(du)(du)網(wang)(wang)絡框架，在系統覆蓋范(fan)圍(wei)內(nei)，能夠確保全(quan)省(sheng)的通(tong)(tong)(tong)(tong)(tong)信(xin)(xin)并(bing)且以(yi)縣(xian)（區(qu)(qu)、市(shi)(shi)）及林(lin)(lin)(lin)(lin)場為單(dan)位(wei)建(jian)立(li)多個(ge)子(zi)(zi)網(wang)(wang)，各子(zi)(zi)網(wang)(wang)可(ke)以(yi)單(dan)獨(du)通(tong)(tong)(tong)(tong)(tong)信(xin)(xin)且不(bu)占用(yong)其他(ta)子(zi)(zi)網(wang)(wang)的信(xin)(xin)道資源。省(sheng)、市(shi)(shi)、縣(xian)（區(qu)(qu)、市(shi)(shi)）級(ji)調(diao)(diao)度(du)(du)管(guan)理(li)控(kong)制中(zhong)(zhong)心對所轄(xia)范(fan)圍(wei)內(nei)各地森林(lin)(lin)(lin)(lin)防護人員終端進(jin)行遠程調(diao)(diao)度(du)(du)管(guan)理(li)，包括呼叫控(kong)制功能（個(ge)呼、組呼、全(quan)呼、緊(jin)急報警等），數(shu)據應用(yong)管(guan)理(li)（短信(xin)(xin)息發送、GPS定位(wei)信(xin)(xin)息、考勤管(guan)理(li)等），同時，系統可(ke)通(tong)(tong)(tong)(tong)(tong)過IP網(wang)(wang)絡對各基(ji)站的運行狀態(tai)進(jin)行檢查并(bing)且維護基(ji)站配(pei)置參數(shu)。

PDT同播系統

PDT同播系統是一種分區覆(fu)(fu)蓋(gai)(gai)的廣域通(tong)信(xin)系統，借(jie)助(zhu)于(yu)多個(ge)基(ji)站(zhan)(zhan)(zhan)實現(xian)比單基(ji)站(zhan)(zhan)(zhan)系統更(geng)廣闊的通(tong)信(xin)覆(fu)(fu)蓋(gai)(gai)范圍，系統中各個(ge)基(ji)站(zhan)(zhan)(zhan)接收頻(pin)率(lv)及發射頻(pin)率(lv)一致，因此系統的頻(pin)譜利用(yong)(yong)(yong)(yong)率(lv)高，移動用(yong)(yong)(yong)(yong)戶(hu)在(zai)跨基(ji)站(zhan)(zhan)(zhan)漫(man)游時不(bu)用(yong)(yong)(yong)(yong)越區切(qie)換，不(bu)用(yong)(yong)(yong)(yong)進(jin)行位置登記，也不(bu)存在(zai)掉話現(xian)象。整個(ge)系統不(bu)像集群蜂窩小區通(tong)信(xin)那樣需要(yao)復雜的信(xin)令系統，系統結構簡單，適用(yong)(yong)(yong)(yong)于(yu)林業用(yong)(yong)(yong)(yong)戶(hu)占用(yong)(yong)(yong)(yong)頻(pin)率(lv)資(zi)源少、覆(fu)(fu)蓋(gai)(gai)范圍大(da)、通(tong)信(xin)業務量低的應(ying)用(yong)(yong)(yong)(yong)。 

數字IP互聯系統

IP 互聯的基本原理是(shi)通(tong)(tong)過基于(yu)TCP/IP協議的以(yi)太(tai)網(wang)將(jiang)分散的多個中轉臺連接起來，從而實現更(geng)廣的通(tong)(tong)信覆蓋(gai)范圍。系(xi)統(tong)結(jie)構簡單，適用(yong)于(yu)林(lin)業(ye)用(yong)戶大范圍多基站組(zu)網(wang)應用(yong)。

特點：

?均能(neng)提(ti)供豐富(fu)的業務功能(neng)，如：單呼/組呼/全呼/模數(shu)兼容/緊急呼叫(jiao)/緊急報警/遙(yao)暈/遙(yao)斃/終端(duan)檢查(cha)/環境監聽/故障弱(ruo)化等；

?均采用全(quan)IP組網，支持(chi)多種傳輸鏈路（IP、E1、無線鏈路等）；

?終(zhong)端可以無縫漫游，打火救援使(shi)用方便；

?調度多極化，支持分層分級管理；

 ?完善的互聯(lian)互通功能，系(xi)統(tong)可以通過各種網關來與其他(ta)系(xi)統(tong)互聯(lian)；

?支持星型(xing)、串型(xing)、樹型(xing)、環(huan)型(xing)等(deng)多種組(zu)網形態

?提供二次開發接口，便于用(yong)戶進行個性(xing)開發，擴展(zhan)更多種類(lei)的數(shu)據(ju)應用(yong)業務(wu)；

?PDT同播系(xi)統全網只需一對頻(pin)(pin)點，解決林區多(duo)站(zhan)建設頻(pin)(pin)點資源緊張的問題，可有(you)效解決信(xin)號(hao)在(zai)重疊覆蓋(gai)區的同頻(pin)(pin)干(gan)擾問題，實現全省林業系(xi)統通(tong)信(xin)覆蓋(gai)；

方案拓撲圖