印度B41 2500Mhz TD-LTE兼容性问题

WalshCode

Band 41:

This is an unpaired frequency band. Both uplink and downlink portions of this band are located in the same chunk of 2500MHz and 2600MHz radio frequency. The total bandwidth is 194MHz of which only 40MHz is earmarked for telecommunication while 154MHz is allocated to Department of space (DoS) for satellite services. Spectrum in this band is held by Vodafone, Idea and state owned BSNL. Vodafone and Idea are using this band to add capacity to their existing band 3 LTE networks to compete with Airtel and Jio which have large amount of similar spectrum in band 40.

Band number        Type        Uplink frequency (MHz)        Downlink frequency (MHz)        Bandwidth for telecom (MHz)
1        Paired        1939-1979        2129-2169        40 X 2
3        Paired        1710-1765        1805-1860        55 X 2
5        Paired        824-844        869-889        17.5 X 2
7        Paired        2500-2570        2620-2690        ———
8        Paired        890-915        935-960        22.2 X 2
28        Paired        713-748        768-803        35 X 2
40        Unpaired        2300-2400        80
41        Unpaired        2535-2555/2635-2655        40

目前国内厂商为了省钱，B41频段从8992平台后基本都是用的100Mhz的窄滤波，目前看现有终端校准最低是到40240（2555Mhz），据测试是可以支持软银AXGP的40190频点（2545-2555Mhz），那么印度这次分配的RF前端2535-2545Mhz是否存在问题？AMSS侧是否能够支持低于40140的频点？
100Mhz的SAW价格比较便宜，个人感觉低段拓展10Mhz左右的临时解决方案是改校准从40240-41240改为40140-41140

这样100Mhz的SAW通过的实际频率应该是2535-2655Mhz刚好满足印度B41的需求
顺便附上上次频率拍卖的结果，方便兄弟做案子
For auction of 2016 which started on 1st oct 2016 and ended on 6th oct 2016 result for 2500mhz are:

Idea brought 10Mhz in AP , Assam ,Bihar , Gujarat, Haryana, HP, J&K , Kerala, Maharashtra, North East, Orrisa, Rajasthan, UP(e), UP(w) West Bengal and 20mhz in MP.

Vodafone brought 10mhz in Assam, Haryana, Kerala, North East , Odisha, Punjab ,Rajasthan, UP(e), UP(w) and West Bengal and 20mhz in Delhi, Gujarat, Kolkata, Mumbai, Maharashtra.

Bsnl already got 20mhz spectrum in 16 out of 20 circles it operates in.

Band 41 is supported by many chinese brands already like xiaomi, lenovo, oppe etc as its being used in their native country. So don’t feel that most handset won’t support this band 41, infact popular phones like xiaomi note 3,mi 5, iphone 6, 6s,7 , galaxy s6, s7 all have band 41 enabled.

Band 41 is good for capacity addition not for in-building coverage. That means users will be latching to this band mostly when in open and that is where we need 4G the most as most people have wifi in home and offices.

This 2500mhz band 41 is another positive for Indian 4G telecom market as capacity addition would led to lower prices in long term.

gook2009

兄弟这是在哪写的