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-- 作者:tp33 -- 发布时间:2005-11-24 10:33:37 请高手帮忙分析!小弟不胜感激!! 现场情况是这样的,该楼层采用基站的天线口直接覆盖,层数较高,57层,室外基站不是很多,且信号较弱,但能收到楼上小区的信号,场强约45dBuV左右,现场拨测发现室内效果良好,但是在窗边就出现了难以呼出、频繁切换等问题,室内覆盖边缘场强>50dBuV,且该房间有一副天线。该基站自身带2台干放覆盖电梯,因楼层较高,电梯上下经过5个小区。 [CS-ID:80F603C0424] / [PS-ID:151926311] || 233964.93917||0 < PS SCCH: 0102020900 64dBuV || 234147.44333||0 > CS SCCH: 0106020C00 68dBuV (Assigned: Abs.Slot 3 / CarrierNo. 12) || 234201.18792||0 < PS SYNC: 0000000000 65dBuV || 234203.69375||0 > CS SYNC: 0000000000 60dBuV || 234211.00125||0 --<< Sync off || 234211.00125||0 -<- Idle TCH [80000000000000 || 234218.50583||0 -->> Sync off || 234218.50583||0 ->- Idle TCH [8000231F211E4F || 234296.00167||0 <[4306] <RT PRs RT [PS Identity:0F1AA2A514791470] || 234328.50583||0 >[45011705] >CC SETUP CC [Bearer Capability:0403808CA4] CC [Signal:340140] CC [Calling Party number:6C0A008033313 CC [Called Party number:700D803030323 || 234366.00167||0 <[45019702] <CC CALL PROC || 234391.00208||0 <[4301] <RT DIRq RT [Definition Info.Req.:81] || 234403.50583||0 >[4302] >RT DIRs RT [Area Info.:013F3C39422C6002] || 234436.00208||0 <[4304] <RT FRq RT [Encryption:091000] RT [TCH Reassign:1507] RT [Zone Info.Indicat.Func.:C0] || 234448.50625||0 >[4305] >RT FRs RT [Encryption:091000] RT [TCH Reassign:1517] RT [Zone Info.Indicat.Func.:C0] || 234481.00250||0 <[4303] <RT EKS RT [Encryption:091000] RT [Encryption Key Set:0D020762] || 234753.50667||0 >[4401] >MM ARq MM [Authentication Type:0601] MM [Authentication Random Pattern:0708 || 234791.00250||0 <[4402] <MM ARs MM [Active Chipherring Pattern:0508D44 || 234816.00250||0 <[45019701] <CC ALERT || 236146.00500||0 <[45019707] <CC CONN || 236168.50917||0 >[4501170F] >CC CONN ACK || 244273.51708||0 >[4346] >RT TCH R RT [Carrier Number:0506] RT [CS Ident.:0880F603C04201] RT [Slot Number:1446] || 244278.51708||0 >[4346] >RT TCH R RT [Carrier Number:0506] RT [CS Ident.:0880F603C04201] RT [Slot Number:1446] || 244283.51708||0 >[4346] >RT TCH R RT [Carrier Number:0506] RT [CS Ident.:0880F603C04201] RT [Slot Number:1446] || 244288.51708||0 >[4346] >RT TCH R RT [Carrier Number:0506] RT [CS Ident.:0880F603C04201] RT [Slot Number:1446] || 244293.51708||0 >[4346] >RT TCH R RT [Carrier Number:0506] RT [CS Ident.:0880F603C04201] RT [Slot Number:1446] || 244296.21208||0 --<< TX off [CrNo:6 / Slot:1 / CS-ID:80F603C0424] || 244324.95042||1 < PS SYNC: 0000000000 63dBuV || 244329.96208||1 --<< Sync off || 244344.94792||1 --<< Sync on || 244362.45417||1 > CS SYNC: 0000000000 57dBuV || 244364.95417||1 --<< Sync off || 244374.76333||1 -<- Idle TCH [8000CFDF2142FC || 244387.26708||1 -->> Sync off || 244387.26708||1 ->- Idle TCH [800013E3E1114E || 244391.21208||0 -><< TX off || 244482.26708||1 >[4501177D] >CC STAT CC [Cause:080302859F] CC [Call State:14010A] || 258792.26208||1 >[4346] >RT TCH R RT [Carrier Number:0505] RT [CS Ident.:0880F603C04201] RT [Slot Number:1402] || 258797.26208||1 >[4346] >RT TCH R RT [Carrier Number:0505] RT [CS Ident.:0880F603C04201] RT [Slot Number:1402] || 258802.26208||1 >[4346] >RT TCH R RT [Carrier Number:0505] RT [CS Ident.:0880F603C04201] RT [Slot Number:1402] || 258807.26208||1 >[4346] >RT TCH R RT [Carrier Number:0505] RT [CS Ident.:0880F603C04201] RT [Slot Number:1402] || 258812.26208||1 >[4346] >RT TCH R RT [Carrier Number:0505] RT [CS Ident.:0880F603C04201] RT [Slot Number:1402] || 258814.95708||1 --<< TX off [CrNo:5 / Slot:3 / CS-ID:80F603C0424] || 258846.19667||0 < PS SYNC: 0000000000 66dBuV || 258851.20708||0 --<< Sync off || 258853.69958||0 > CS SYNC: 0000000000 50dBuV || 258856.19583||0 --<< Sync on || 258861.00833||0 --<< Sync off || 258861.00833||0 -<- Idle TCH [80002EFCC32B1F || 258868.51250||0 -->> Sync off || 258868.51250||0 ->- Idle TCH [8000311E3E3F3F || 258899.95708||1 --<< TX off || 259168.51208||0 >[4501177D] >CC STAT CC [Cause:080302859F] CC [Call State:14010A] || 266273.50958||0 >[4346] >RT TCH R RT [Carrier Number:050D] RT [CS Ident.:0880F603C04201] RT [Slot Number:1441] || 266278.50958||0 >[4346] >RT TCH R RT [Carrier Number:050D] RT [CS Ident.:0880F603C04201] RT [Slot Number:1441] || 266283.50958||0 >[4346] >RT TCH R RT [Carrier Number:050D] RT [CS Ident.:0880F603C04201] RT [Slot Number:1441] || 266288.50958||0 >[4346] >RT TCH R RT [Carrier Number:050D] RT [CS Ident.:0880F603C04201] RT [Slot Number:1441] || 266293.50958||0 >[4346] >RT TCH R RT [Carrier Number:050D] RT [CS Ident.:0880F603C04201] RT [Slot Number:1441] || 266296.20417||0 --<< TX off [CrNo:13 / Slot:4 / CS-ID:80F603C0424] || 266326.81833||1 < PS SYNC: 0000000000 62dBuV || 266373.69708||0 -->> Sync on [color=#FF0000]|| 266501.96375||1 --[><TCH SWITCH Time's up]-- || 266501.96375||1 --[TCH SWITCH Back ReTrace]-[/color] [CrNo:5 / Slot:3 / CS-ID:80F603C0424] || 266558.69667||0 -->> Sync off || 266558.69667||0 -->> TX on || 266561.19333||0 --<< Sync on || 266571.00542||0 --<< Sync off || 266571.00542||0 --<< TX on || 266638.50958||0 -->> TX on || 267793.50917||0 >[4346] >RT TCH R RT [Carrier Number:050B] RT [CS Ident.:0880F603C04201] RT [Slot Number:1441] || 267798.50917||0 >[4346] >RT TCH R RT [Carrier Number:050B] RT [CS Ident.:0880F603C04201] RT [Slot Number:1441] || 267803.50917||0 >[4346] >RT TCH R RT [Carrier Number:050B] RT [CS Ident.:0880F603C04201] RT [Slot Number:1441] || 267808.50917||0 >[4346] >RT TCH R RT [Carrier Number:050B] RT [CS Ident.:0880F603C04201] RT [Slot Number:1441] || 267813.50917||0 >[4346] >RT TCH R RT [Carrier Number:050B] RT [CS Ident.:0880F603C04201] RT [Slot Number:1441] || 267841.95375||0 [color=#FF0000]--[TCH SWITCH Declined?]--[/color] || 267898.69667||0 -->> Sync on || 267908.70417||0 -->> Sync off || 267998.70417||0 ->>< TX off --[Wait for a Link Channel Request]-- [CrNo:26] -- 作者:tom -- 发布时间:2005-11-24 11:18:04 室内分布典型的情况,不妨多看一下其他帖子,对策是区分频点。 -- 作者:tp33 -- 发布时间:2005-11-24 11:54:54 高层我们已经划分频点了,范围是1-18,跟室外不在一个频段。 -- 作者:q329 -- 发布时间:2005-11-24 13:36:47 会不会你的底噪过高,靠窗口的天线又是相比之下场强比较弱的 -- 作者:tp33 -- 发布时间:2005-11-24 14:49:44 这个有待测试,2台干放应该底噪抬升不大,天线功率不会很低,10左右,肯定没问题。 -- 作者:Alex -- 发布时间:2005-11-25 17:04:08 都是TCH Switching,该流程没有难以呼出的现象,只是TCH Switching过多,还是考虑业务信道干扰。可考虑室内的几个基站和室外都分开频点,但由于楼层太高,所以难以避免其他远基站的干扰,可考虑提高室内天线口的输出功率。 -- 作者:sgdxlzl -- 发布时间:2005-11-27 18:09:23 我看主要是由于天线到信源间的功分耦合器件太多引起的,你可以查查中间到底有多少个 功分耦合器件?室分中功分耦合的驻波大家和厂家一样普遍只关心正向驻波,也就是下行驻波。 但是PHS不是有线电视只要下行就可以了。经实际测试几个厂家的产品发现上下行驻波差别很大。下行典型值是1.1-1.3,上行典型值是4-5。也可以说由于驻波引入的损耗下行是0.09左右,上行是2.2左右。一般的室分从信源到天线之间一般有5个器件左右,那么上行要比下行损耗大10DB左右。也就是说即使不考虑干放引入的噪声,室分能通话的极限也是26+10=36dbuv 才能正常通话。考虑到干放的噪声,以及从信号源到天线的功分耦合器件常会超过5个,那么很可能要到40-45dbuv才能正常通话,最差的可能要到50dbuv。 目前已经有7条评论 >>> 发表你的见解 |
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