林業無線對講系統解決方案

行業背景 

林(lin)(lin)業(ye)系(xi)統承擔(dan)著保護國家森(sen)林(lin)(lin)資源以(yi)及促(cu)進林(lin)(lin)業(ye)經濟健康發(fa)展(zhan)的(de)重(zhong)要責任(ren)。我國的(de)林(lin)(lin)區具有集中性強和(he)單(dan)位(wei)面積廣袤的(de)特點，一旦發(fa)生(sheng)災害(hai)性事故，需(xu)要緊急(ji)時間排查危(wei)險(xian)源并對(dui)危(wei)險(xian)區域進行定(ding)位(wei)。林(lin)(lin)業(ye)工作(zuo)對(dui)于通信(xin)的(de)需(xu)求日益突出。

林業通(tong)(tong)信(xin)系統(tong)(tong)建設以數字超短波技術、無線(xian)鏈(lian)路組網技術、視頻傳輸技術等(deng)形成的通(tong)(tong)信(xin)網絡為基礎(chu)，著力構建空中與地面(mian)、有線(xian)與無線(xian)、固定與機動(dong)相(xiang)結合(he)的鏈(lian)式、立(li)體應急通(tong)(tong)信(xin)系統(tong)(tong)，全面(mian)提高森林防火(huo)通(tong)(tong)信(xin)的覆蓋率(lv)和傳遞率(lv)，確保在發生(sheng)森林火(huo)災時，能夠使(shi)用多種通(tong)(tong)信(xin)手段保障火(huo)災信(xin)息傳輸暢通(tong)(tong)，從而最|大(da)限度(du)減少(shao)森林火(huo)災的損失程度(du)。

為(wei)解決林業(ye)工(gong)作(zuo)日益增長的(de)通信需求，提(ti)升(sheng)林業(ye)工(gong)作(zuo)者的(de)工(gong)作(zuo)效率，達到(dao)統(tong)一(yi)指揮的(de)目的(de)，海能達專門為(wei)林業(ye)用戶提(ti)供了一(yi)套滿足全省聯網、可(ke)靠性高、使用簡單、功能強(qiang)大的(de)數字(zi)(zi)無線通訊系統(tong)——數字(zi)(zi)IP互聯系統(tong)和PDT數字(zi)(zi)同播(bo)系統(tong)。

解決方案

通(tong)(tong)(tong)(tong)過(guo)(guo)仔(zi)細研究分析林(lin)(lin)業(ye)用戶通(tong)(tong)(tong)(tong)信(xin)需求，提(ti)供了一套(tao)完善的(de)(de)數(shu)字無線通(tong)(tong)(tong)(tong)信(xin)系(xi)(xi)統(tong)(tong)解決方案。森(sen)林(lin)(lin)防(fang)火(huo)(huo)數(shu)字超(chao)短(duan)波無線通(tong)(tong)(tong)(tong)信(xin)通(tong)(tong)(tong)(tong)過(guo)(guo)建(jian)設省(sheng)(sheng)、市(shi)(shi)級(ji)調(diao)度(du)(du)管(guan)(guan)(guan)理(li)(li)控(kong)制中(zhong)心，縣（區(qu)、市(shi)(shi)）二級(ji)調(diao)度(du)(du)中(zhong)心，在重(zhong)點森(sen)林(lin)(lin)防(fang)火(huo)(huo)地(di)區(qu)（山(shan)區(qu)）建(jian)設固定基站(zhan)，移(yi)動(dong)基站(zhan)，軟件管(guan)(guan)(guan)理(li)(li)平臺(tai)構建(jian)綜合性的(de)(de)無線通(tong)(tong)(tong)(tong)信(xin)系(xi)(xi)統(tong)(tong)，形成全省(sheng)(sheng)聯網(wang)的(de)(de)省(sheng)(sheng)、市(shi)(shi)、縣（區(qu)、市(shi)(shi)）三(san)級(ji)森(sen)林(lin)(lin)防(fang)火(huo)(huo)指揮調(diao)度(du)(du)網(wang)絡框架(jia)，在系(xi)(xi)統(tong)(tong)覆(fu)蓋范(fan)圍內，能夠確保全省(sheng)(sheng)的(de)(de)通(tong)(tong)(tong)(tong)信(xin)并且(qie)以(yi)縣（區(qu)、市(shi)(shi)）及(ji)林(lin)(lin)場為單(dan)位建(jian)立多個(ge)子網(wang)，各子網(wang)可以(yi)單(dan)獨通(tong)(tong)(tong)(tong)信(xin)且(qie)不(bu)占用其他子網(wang)的(de)(de)信(xin)道資(zi)源。省(sheng)(sheng)、市(shi)(shi)、縣（區(qu)、市(shi)(shi)）級(ji)調(diao)度(du)(du)管(guan)(guan)(guan)理(li)(li)控(kong)制中(zhong)心對(dui)所轄范(fan)圍內各地(di)森(sen)林(lin)(lin)防(fang)護(hu)人員終端(duan)進行遠程調(diao)度(du)(du)管(guan)(guan)(guan)理(li)(li)，包括呼叫(jiao)控(kong)制功能（個(ge)呼、組呼、全呼、緊急報警等(deng)(deng)），數(shu)據應用管(guan)(guan)(guan)理(li)(li)（短(duan)信(xin)息發送、GPS定位信(xin)息、考勤管(guan)(guan)(guan)理(li)(li)等(deng)(deng)），同(tong)時，系(xi)(xi)統(tong)(tong)可通(tong)(tong)(tong)(tong)過(guo)(guo)IP網(wang)絡對(dui)各基站(zhan)的(de)(de)運行狀態進行檢查并且(qie)維護(hu)基站(zhan)配置參數(shu)。

PDT同播系統

PDT同播系(xi)(xi)統(tong)(tong)是一(yi)種分區覆蓋(gai)的廣域通(tong)(tong)信(xin)(xin)(xin)系(xi)(xi)統(tong)(tong)，借助于(yu)多個基站(zhan)實現比單基站(zhan)系(xi)(xi)統(tong)(tong)更廣闊的通(tong)(tong)信(xin)(xin)(xin)覆蓋(gai)范圍(wei)，系(xi)(xi)統(tong)(tong)中(zhong)各個基站(zhan)接收(shou)頻率(lv)(lv)(lv)及發射頻率(lv)(lv)(lv)一(yi)致，因(yin)此系(xi)(xi)統(tong)(tong)的頻譜利用(yong)率(lv)(lv)(lv)高，移動用(yong)戶(hu)在跨基站(zhan)漫游時不(bu)用(yong)越區切(qie)換，不(bu)用(yong)進行(xing)位置登記，也不(bu)存在掉話現象(xiang)。整個系(xi)(xi)統(tong)(tong)不(bu)像(xiang)集(ji)群蜂窩小區通(tong)(tong)信(xin)(xin)(xin)那(nei)樣需要復雜(za)的信(xin)(xin)(xin)令(ling)系(xi)(xi)統(tong)(tong)，系(xi)(xi)統(tong)(tong)結構簡單，適用(yong)于(yu)林(lin)業用(yong)戶(hu)占用(yong)頻率(lv)(lv)(lv)資源少(shao)、覆蓋(gai)范圍(wei)大、通(tong)(tong)信(xin)(xin)(xin)業務量低的應用(yong)。 

數字IP互聯系統

IP 互(hu)聯(lian)的(de)基本原理(li)是(shi)通過基于TCP/IP協議的(de)以(yi)太網將分散(san)的(de)多(duo)(duo)個中(zhong)轉臺連接起來(lai)，從而實現更(geng)廣的(de)通信覆蓋范圍。系統結構簡單(dan)，適用(yong)于林業(ye)用(yong)戶大范圍多(duo)(duo)基站組網應用(yong)。

特點：

?均能提供豐富的業(ye)務(wu)功(gong)能，如(ru)：單呼/組呼/全呼/模(mo)數兼容/緊急(ji)呼叫/緊急(ji)報(bao)警/遙暈/遙斃/終端檢查/環境監聽(ting)/故障弱化(hua)等；

?均采用全IP組網，支持多種(zhong)傳(chuan)輸鏈(lian)路（IP、E1、無線鏈(lian)路等）；

?終端可以無縫(feng)漫游，打火(huo)救(jiu)援使用方便；

?調(diao)度多極化，支(zhi)持(chi)分層分級管理；

?完(wan)善的互(hu)聯互(hu)通(tong)功能，系統(tong)可以通(tong)過各種網關來與其他系統(tong)互(hu)聯；

?支持星型(xing)、串型(xing)、樹型(xing)、環型(xing)等多種(zhong)組網形態

?提供二次開(kai)(kai)發接(jie)口，便于用戶進行(xing)個(ge)性開(kai)(kai)發，擴展更多(duo)種(zhong)類的數(shu)據應用業(ye)務；

?PDT同播系統(tong)全(quan)網只需一對頻點(dian)，解(jie)決林(lin)區(qu)多站建設頻點(dian)資源(yuan)緊張的問(wen)題(ti)，可(ke)有效解(jie)決信號在重疊覆蓋區(qu)的同頻干擾問(wen)題(ti)，實(shi)現(xian)全(quan)省林(lin)業系統(tong)通信覆蓋；

方案拓撲圖