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注册:2008-3-3
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发表于 2008-3-7 16:46:00 |只看该作者 |倒序浏览
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 24pt; mso-layout-grid-align: none;"><font size="3"><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">一、我国800MHz数字集群频率规划</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 24pt; mso-layout-grid-align: none;"><font size="3"><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">2007年四月国家根据近几年数字集群的需求和几个省市试验网实际发展情况,于四月发布了《800MHz数字集群通信频率台(站)管理规定》。规定数字集群通信系统的工作频段为</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">800MHz</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">频段。具体为频段为806-821MHz/851-866MHz。其中,806-816MHz/851-861MHz主要用于服务范围涉及三省(含)以上组网的需求及其它特殊需求。816-821MHz/861-866MHz主要用于各省、自治区、直辖市范围内组网和相邻两省(自治区、直辖市)范围内组网的需求。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 24pt; mso-layout-grid-align: none;"><font size="3"><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">从其他资料中获悉我国800M数字集群具体频率规划如下。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 24pt; mso-layout-grid-align: none;"><font size="3"><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">其中基站:</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">TX</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">:</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">851</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">~</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">866MHz RX</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">:</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">806</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">~</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">821MHz</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">;移动台</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">TX</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">:</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">806</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">~</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">821MHz RX</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">:</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">851</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">~</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">866MHz</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">,其收发双工间隔为</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">45MHz</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">。信道间隔为</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">25kHz</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">。在此频段共计可安排</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">600</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">对频点,分为</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">3</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">个大组,每个大组分为</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">40</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">个小组,每个小组有</span><span lang="EN-US" style="LAYOUT-GRID-MODE: line; mso-font-kerning: 0pt;"><font face="Times New Roman">5</font></span><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">对频点。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 24pt; mso-layout-grid-align: none;"><font size="3"><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">二、近年来国家对800MHz数字集群的管理</span></font></p><p style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 24pt; mso-layout-grid-align: none;"><font size="3"><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">1.2001年3月22日发布了信无简函[2001]35号文冻结现有模拟集群通信系统的进一步频率分配指配,要求填报现有800M H z频段无线集群通信系统频率使用情况表,鼓励向更高效率与更先进的数字集群通信方式发展。<br/><br/>  2.调查汇总现有模拟集群通信系统的建网、分布状况,结合数字集群通信的市场需求,进一步核实原有频率分配状况,确定好数字集群通信试验与应用的频率分配甚至指配方面的细节频率规划与相关管理规定,以满足与适应数字集群通信的现今与未来发展的市场需求。<br/><br/>  3.按此精神,为满足社会对数字集群通信的需求,促进数字集群的健康发展及提高频谱利用效率,对800M H z无线集群通信系统的频率管理专门发布了信部无[2001]518号文“关于800M H z集群频率使用管理有关事宜的通知”,对1992年1月发布的国无管理[1992]3号文“800兆赫无线集群通信系统频率使用暂行规定”进行了重大修订。首先停止对800M H z模拟集群系统再指配频率,并指明目前尚未使用或已投入使用但每个频道的平均用户未达到70个属台的模拟集群网,应在2001年12月31日前由原先指配的无线电管理机构收回其全部或部分使用频率;已投入使用、运行较好且每个频道的平均用户超过70个属台的模拟集群网,原则上可继续使用至2005年12月31日。对未按规定缴纳频占费的运营单位,应收回其使用频率。并强调指出800H M z数字集群通信系统频率规划时对具有专用集群通信业务需求的行业和部门,应尽量利用虚拟专网技术加入数字集群共网。对新批数字集群频率强调必须报经信息产业部无线电管理局审核同意,以加强其频率集中统一管理,公安、国家安全等部门的专用集群通信系统使用350M H z和380M H z频段专用频率,若确需使用800M H z集群通信系统,则可利用V PN技术面向社会服务的数字集群共网平台,但应自行采取保密措施,等等。</span></font></p><p style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 24pt; mso-layout-grid-align: none;"><font size="3"><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;"></span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 24pt; mso-layout-grid-align: none;"><font size="3"><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;">4.国家经过近几年对数字集群发展的不断研讨和试验,终于发布了信部无[2007]173号文“关于发布《800MHz数字集群通信频率台(站)管理规定》的通知”,于2007年5月1日起施行。通知中规定:数字集群通信频率的使用应遵循提高频谱利用率的原则,以建立共用的数字集群通信网为主,专用数字集群通信网为辅;目前仍在运行的模拟集群通信网,在有数字集群通信网需求的地方,原则上应将频率退出;在目前无数字集群通信网需求的地方,由该模拟集群网所在省、自治区、直辖市无线电管理机构根据有关规定制定模拟网转数字网计划,并在816-821MHz/861-866MHz频段内安排适当频率予以过渡;通知中还明确提到了国内两家数字集群设备供应商GOTA和GT800两种制式,等等。</span></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 24pt; mso-layout-grid-align: none;"><font size="3"><span style="LAYOUT-GRID-MODE: line; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt;"><br/></span></font></p><span lang="EN-US" style="LAYOUT-GRID-MODE: line; COLOR: blue; mso-font-kerning: 0pt; mso-bidi-font-weight: bold;"><p></p></span>

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