超远覆盖基站（TCC和SPB）

超远覆盖基站一般使用在人烟稀少的地方、沙漠、沿海地区。开启超远覆盖基站会使基站小区的容量会降低，功率增大，覆盖范围会扩大到72-121KM。

超远覆盖基站涉及到的小区参数为TALIM，MAXTA，XRANGE。
开启TCC、SPB功能的超远覆盖基站涉及到的参数为：TALIM,MAXTA,XRANGE, BSPWRB和BSPWRT, MPWR(TX)。
开启超远覆盖的小区容量是正常小区的1/2，而开启TCC、SPB功能的超远覆盖基站是正常小区容量的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 用于微蜂窝
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
软件要求：
TCC:
BTS SW
“B1192R0914” or later (目前现网最新版本即可)
SWPB:
BTS SW “B0531R0901”

àcTRU and Micro RBS


“B3991R004F”
àsTRU

“B1192R0914 or later:àdTRU
BSC侧feature检查
DBTSP:TAB=AXEPARS,SETNAME=CME20BSCF,NAME=XRANGECELL;
检查XRANGECELL的VALUE设为1。

小区数据：
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载频只能起一块,-2和-3载频只能起一块,0-5的载频可以起0,2,4也可以起1,3,5，但不能同时都起服务)
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;
对于900站,88文件中TX的功率一定要设置为63，小区功率设置为51.
对于1800的基站，88文件中TX的功率设置为51，小区功率设置为49.
一般我们认为TX的功率只要大于等于小区设置功率即可，ALEX里面给出TX的范围也是51-63，实际开TCC基站过程中只能设置为63基站才能开起来。


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;


下面是一些名词解释和使用要求。(ALEX中摘录)
TALIM：Timing advance limit for handover
This parameter is given in number of bit periods (bp).
正常小区取值范围Numeral 0 – 63,超远覆盖小区取值Numeral 0 - 219
MAXTA :Timing advance limit when Mobile Station (MS) is considered lost
正常小区取值范围Numeral 0 – 63,超远覆盖小区取值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.
参数设为YES ：The cell range is set to extended range
参数设为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 编辑 ]