林業無線對講系統解決方案

行業背景 

林(lin)業系統承(cheng)擔(dan)著保護國家森林(lin)資源(yuan)以及促(cu)進(jin)林(lin)業經濟健康發展的重要責任。我國的林(lin)區具有集中性強(qiang)和單位(wei)面(mian)積廣(guang)袤的特點，一旦發生災害性事(shi)故(gu)，需(xu)要緊(jin)急時間排查(cha)危(wei)險源(yuan)并對(dui)危(wei)險區域進(jin)行定位(wei)。林(lin)業工作對(dui)于通信的需(xu)求日益(yi)突出。

林(lin)業通(tong)信系統建設以數(shu)字超短波技術、無(wu)線鏈路組網技術、視(shi)頻(pin)傳輸(shu)(shu)技術等形成的通(tong)信網絡為(wei)基礎，著力構建空中與(yu)地面(mian)、有線與(yu)無(wu)線、固(gu)定與(yu)機動相(xiang)結合的鏈式(shi)、立體應急通(tong)信系統，全面(mian)提高森(sen)林(lin)防火通(tong)信的覆蓋率和傳遞率，確保(bao)在發生森(sen)林(lin)火災時(shi)，能夠使用多種通(tong)信手段保(bao)障火災信息傳輸(shu)(shu)暢通(tong)，從而(er)最|大限度減少森(sen)林(lin)火災的損失程(cheng)度。

為(wei)解(jie)決林(lin)業(ye)工(gong)作日益(yi)增長的通信需求，提升林(lin)業(ye)工(gong)作者的工(gong)作效(xiao)率，達到統(tong)一指(zhi)揮的目(mu)的，海能(neng)達專門為(wei)林(lin)業(ye)用(yong)戶提供了一套(tao)滿足全省聯網、可靠(kao)性高、使用(yong)簡(jian)單(dan)、功能(neng)強大的數(shu)字無線通訊系(xi)統(tong)——數(shu)字IP互聯系(xi)統(tong)和PDT數(shu)字同播系(xi)統(tong)。

解決方案

通(tong)(tong)(tong)過(guo)(guo)仔(zi)細(xi)研究分析(xi)林(lin)業用戶通(tong)(tong)(tong)信(xin)需求(qiu)，提(ti)供了(le)一(yi)套完善的(de)(de)數字無(wu)線(xian)通(tong)(tong)(tong)信(xin)系(xi)(xi)統(tong)解(jie)決方案。森林(lin)防(fang)(fang)火(huo)數字超短波(bo)無(wu)線(xian)通(tong)(tong)(tong)信(xin)通(tong)(tong)(tong)過(guo)(guo)建設(she)省(sheng)(sheng)、市(shi)級(ji)(ji)調(diao)度(du)(du)(du)管理(li)控(kong)制中(zhong)心，縣(xian)（區(qu)、市(shi)）二級(ji)(ji)調(diao)度(du)(du)(du)中(zhong)心，在重點森林(lin)防(fang)(fang)火(huo)地(di)區(qu)（山區(qu)）建設(she)固定基(ji)站，移(yi)動基(ji)站，軟件管理(li)平(ping)臺構建綜(zong)合性的(de)(de)無(wu)線(xian)通(tong)(tong)(tong)信(xin)系(xi)(xi)統(tong)，形(xing)成(cheng)全(quan)(quan)省(sheng)(sheng)聯網(wang)(wang)的(de)(de)省(sheng)(sheng)、市(shi)、縣(xian)（區(qu)、市(shi)）三級(ji)(ji)森林(lin)防(fang)(fang)火(huo)指(zhi)揮調(diao)度(du)(du)(du)網(wang)(wang)絡(luo)框架，在系(xi)(xi)統(tong)覆蓋范(fan)圍(wei)內(nei)，能(neng)(neng)夠確保全(quan)(quan)省(sheng)(sheng)的(de)(de)通(tong)(tong)(tong)信(xin)并且以(yi)縣(xian)（區(qu)、市(shi)）及(ji)林(lin)場為單(dan)位建立(li)多個(ge)子網(wang)(wang)，各(ge)(ge)子網(wang)(wang)可以(yi)單(dan)獨通(tong)(tong)(tong)信(xin)且不占用其他子網(wang)(wang)的(de)(de)信(xin)道資(zi)源。省(sheng)(sheng)、市(shi)、縣(xian)（區(qu)、市(shi)）級(ji)(ji)調(diao)度(du)(du)(du)管理(li)控(kong)制中(zhong)心對所(suo)轄范(fan)圍(wei)內(nei)各(ge)(ge)地(di)森林(lin)防(fang)(fang)護(hu)人員終端進(jin)行(xing)遠(yuan)程調(diao)度(du)(du)(du)管理(li)，包括呼(hu)(hu)(hu)叫控(kong)制功能(neng)(neng)（個(ge)呼(hu)(hu)(hu)、組呼(hu)(hu)(hu)、全(quan)(quan)呼(hu)(hu)(hu)、緊急報警等(deng)），數據(ju)應用管理(li)（短信(xin)息發(fa)送、GPS定位信(xin)息、考勤(qin)管理(li)等(deng)），同時，系(xi)(xi)統(tong)可通(tong)(tong)(tong)過(guo)(guo)IP網(wang)(wang)絡(luo)對各(ge)(ge)基(ji)站的(de)(de)運(yun)行(xing)狀態進(jin)行(xing)檢查并且維護(hu)基(ji)站配(pei)置(zhi)參數。

PDT同播系統

PDT同播系(xi)統(tong)(tong)(tong)是(shi)一種分區覆蓋的(de)廣域通(tong)(tong)信(xin)系(xi)統(tong)(tong)(tong)，借助(zhu)于(yu)多個(ge)基站(zhan)(zhan)(zhan)實(shi)現(xian)比單(dan)基站(zhan)(zhan)(zhan)系(xi)統(tong)(tong)(tong)更廣闊的(de)通(tong)(tong)信(xin)覆蓋范(fan)圍，系(xi)統(tong)(tong)(tong)中各個(ge)基站(zhan)(zhan)(zhan)接收頻(pin)率及發(fa)射頻(pin)率一致，因此系(xi)統(tong)(tong)(tong)的(de)頻(pin)譜利用(yong)(yong)率高，移動(dong)用(yong)(yong)戶(hu)在跨基站(zhan)(zhan)(zhan)漫(man)游時不用(yong)(yong)越(yue)區切換(huan)，不用(yong)(yong)進行(xing)位置登記，也不存在掉話現(xian)象。整個(ge)系(xi)統(tong)(tong)(tong)不像集群蜂窩小(xiao)區通(tong)(tong)信(xin)那(nei)樣需要復雜(za)的(de)信(xin)令(ling)系(xi)統(tong)(tong)(tong)，系(xi)統(tong)(tong)(tong)結(jie)構簡單(dan)，適用(yong)(yong)于(yu)林(lin)業用(yong)(yong)戶(hu)占用(yong)(yong)頻(pin)率資(zi)源少、覆蓋范(fan)圍大、通(tong)(tong)信(xin)業務量低的(de)應用(yong)(yong)。 

數字IP互聯系統

IP 互(hu)聯的基本原理(li)是通過基于(yu)TCP/IP協(xie)議的以太(tai)網(wang)將分散的多個(ge)中(zhong)轉(zhuan)臺連接起來，從而實現更(geng)廣的通信覆蓋范圍。系(xi)統結構(gou)簡單，適用于(yu)林業用戶(hu)大范圍多基站組網(wang)應(ying)用。

特點：

?均(jun)能(neng)提供豐富(fu)的(de)業務(wu)功(gong)能(neng)，如：單(dan)呼/組呼/全(quan)呼/模數(shu)兼容/緊急(ji)(ji)呼叫/緊急(ji)(ji)報警/遙(yao)暈/遙(yao)斃/終端(duan)檢(jian)查/環境監(jian)聽/故(gu)障(zhang)弱化等；

?均采用(yong)全IP組(zu)網，支(zhi)持多(duo)種傳輸鏈(lian)路(lu)（IP、E1、無線(xian)鏈(lian)路(lu)等(deng)）；

?終(zhong)端可以無縫漫游，打火救(jiu)援使(shi)用方便；

?調(diao)度多極化，支持分層分級(ji)管理；

?完善的互聯互通功(gong)能，系統可以通過各種網(wang)關來與其他系統互聯；

?支持星(xing)型、串(chuan)型、樹型、環型等多種組(zu)網形(xing)態(tai)

?提供二次開(kai)(kai)發接口，便(bian)于用戶進行個性開(kai)(kai)發，擴展更多種類的數據應用業(ye)務(wu)；

?PDT同(tong)播系統全網(wang)只需(xu)一對頻(pin)點，解(jie)決林(lin)區多站建(jian)設頻(pin)點資源緊(jin)張的問題(ti)(ti)，可有效解(jie)決信號在重疊(die)覆蓋區的同(tong)頻(pin)干擾問題(ti)(ti)，實現全省林(lin)業系統通信覆蓋；

方案拓撲圖