超遠(yuǎn)覆蓋基站（TCC和SPB）

超遠(yuǎn)覆蓋基站一般使用在人煙稀少的地方、沙漠、沿海地區(qū)。開(kāi)啟超遠(yuǎn)覆蓋基站會(huì)使基站小區(qū)的容量會(huì)降低，功率增大，覆蓋范圍會(huì)擴(kuò)大到72-121KM。

超遠(yuǎn)覆蓋基站涉及到的小區(qū)參數(shù)為TALIM，MAXTA，XRANGE。
開(kāi)啟TCC、SPB功能的超遠(yuǎn)覆蓋基站涉及到的參數(shù)為：TALIM,MAXTA,XRANGE, BSPWRB和BSPWRT, MPWR(TX)。
開(kāi)啟超遠(yuǎn)覆蓋的小區(qū)容量是正常小區(qū)的1/2，而開(kāi)啟TCC、SPB功能的超遠(yuǎn)覆蓋基站是正常小區(qū)容量的1/4。
硬件要求
For TCC feature
Only for RBS2206/2106 dTRU + CDU-G/J with HYB.
Filter Combiner not support TCC feature.
For SWPB feature 用于微蜂窩
RBS2206/2106 dTRU + CDU-G/J without HYB, or RBS2202 cTRU(sTRU) + CDU A 。
RBS2301, RBS2302, RBS2308
The different between them is SPB transmitter burst forward in time two bit compare to another TX. TCC transmitter in same time.
For Extend Range feature

DTRU or sTRU
軟件要求：
TCC:
BTS SW
“B1192R0914” or later (目前現(xiàn)網(wǎng)最新版本即可)
SWPB:
BTS SW “B0531R0901”

àcTRU and Micro RBS


“B3991R004F”
àsTRU

“B1192R0914 or later:àdTRU
BSC側(cè)feature檢查
DBTSP:TAB=AXEPARS,SETNAME=CME20BSCF,NAME=XRANGECELL;
檢查XRANGECELL的VALUE設(shè)為1。

小區(qū)數(shù)據(jù)：
RLLDC:CELL=XXXX,MAXTA=219;
RLLUC:CELL=XXXX,TALIM=218;
RLSTC:CELL=XXXX,STATE=HALTED;
RLDEC:CELL=XXXX,XRANGE=YES;
RLCHC:CELL=XXXX,HOP=OFF;

Enable TCC or SPB feature

Block the second TRX, Keep even TRX in oper state。(-0和-1載頻只能起一塊,-2和-3載頻只能起一塊,0-5的載頻可以起0,2,4也可以起1,3,5，但不能同時(shí)都起服務(wù))
RXBLI:MO=RXOTRX-x-1,SUBORD;
RXESE:MO=RXOTRX-x-1,SUBORD;
RXBLI:MO=RXOTRX-x-3,SUBORD;
RXESE:MO=RXOTRX-x-3,SUBORD;
RXBLI:MO=RXOTRX-x-5,SUBORD;
RXESE:MO=RXOTRX-x-5,SUBORD;
RXMOP:MO=RXOTX-x-0&&-5;
RXMOC:MO=RXOTX-x-1,MPWR=63;

!900站!
RXMOC:MO=RXOTX-x-3,MPWR=63;
RXMOC:MO=RXOTX-x-4,MPWR=63;

TCC and SWPB feature can not use simultaneous
Active TCC
RLCPC:CELL=XXXX,BSPWRB=51,BSPWRT=51;
!900站!
RLSTC:CELL=XXXX,STATE=ACTIVE;
對(duì)于900站,88文件中TX的功率一定要設(shè)置為63，小區(qū)功率設(shè)置為51.
對(duì)于1800的基站，88文件中TX的功率設(shè)置為51，小區(qū)功率設(shè)置為49.
一般我們認(rèn)為TX的功率只要大于等于小區(qū)設(shè)置功率即可，ALEX里面給出TX的范圍也是51-63，實(shí)際開(kāi)TCC基站過(guò)程中只能設(shè)置為63基站才能開(kāi)起來(lái)。


Active SWPB (for 900M macro RBS)
RLCPC:CELL=XXXX,BSPWRB=49,BSPWRT=49;
(If 1800M site, parameter set to 47)
RLSTC:CELL=XXXX,STATE=ACTIVE;
Active SWPB (for micro RBS)
RLCPC:CELL=XXXX,BSPWRB=35,BSPWRT=35;
RLSTC:CELL=XXXX,STATE=ACTIVE;


下面是一些名詞解釋和使用要求。(ALEX中摘錄)
TALIM：Timing advance limit for handover
This parameter is given in number of bit periods (bp).
正常小區(qū)取值范圍Numeral 0 – 63,超遠(yuǎn)覆蓋小區(qū)取值Numeral 0 - 219
MAXTA :Timing advance limit when Mobile Station (MS) is considered lost
正常小區(qū)取值范圍Numeral 0 – 63,超遠(yuǎn)覆蓋小區(qū)取值Numeral 0 – 219
XRANGE:Extended range cell
This parameter indicates if the traffic is supported at a distance of more than 35 km between the Mobile Station (MS) and the BTS.
參數(shù)設(shè)為YES ：The cell range is set to extended range
參數(shù)設(shè)為NO ：The cell range is set to normal range

TCC(Transmitter Coherent Combining) feature can improve output power 3dB higher than normal maximum TX power of RBS.
The purpose of TCC is to increase the output power from the dTRU by combining the RF output from the two transmitters coherently. This is achieved by forcing both transmitters to send the same data in equal phase and amplitude.

TCC is activated on RBS. It is applicable to RBS 21yx/22yx (y=0 , x>=6 | y >= 1 , any x) except RBS 2109 and RBS 2250 with internal hybrid combiner connected.
Power Output Values to Activate the TCC
功率值要求

BSPWRB and BSPWRT values
Equipment	BSPWRB	BSPWRT
Macro RBS with DXU-21 800/900 MHz	51	51
Macro RBS with DXU-21 1800/1900 MHz	49	49

SWPB(Software power boost) feature can improve 3~5dB higher than normal maximum TX power of RBS.
SWPB is activated on RBS 2301/2302/2308 Micro Base Station, RBS 2101/2102/2202/ Macro Base Station with CDU-A, or RBS 2106/2206 Macro Base Station with CDU-G. Supported Macro Base Station configurations are 1x2, 2x2 and 3x2 CDU-A and 1x2, 2x2 and 3x2 CDU-G.

Supported Micro Base Station Configurations
Number of TRXs	Master Cabinet	Extension Cabinet
2	RBS 2301/2302
4	RBS 2302	RBS 2302
4	RBS 2308
6	RBS 2302	2 * RBS 2302
6	RBS 2308	RBS 2302
8	RBS 2308	RBS 2308
8	RBS 2308	2 * RBS 2302
10	RBS 2308	RBS 2308 + RBS 2302
12	RBS 2308	2 * RBS 2308

Power Output Values to Activate SWPB
功率值要求

BSPWRB and BSPWRT values
Equipment	BSPWRB	BSPWRT
RBS 2301/2302/2308	35	35
RBS 2106/2206, 800 MHz	49	49
RBS 2101/2102/2202, 900 MHz	49	49
RBS 2101/2102/2202, 1800/1900 MHz	47	47

[ 本帖最后由 kelty126.com 于 2010-1-28 12:46 編輯 ]