Jump to content

Leaderboard


Popular Content

Showing most liked content since 01/21/2018 in Blog Entries

  1. 18 points
    Tim YuSprint 4G Rollout UpdatesJanuary 26, 2018 - 5:30 AM PST [Edited: 1/28/18 to include additional information on Samsung 4 port 800 MHz radio] The Triband Hexadecaport. The newest development of Sprint's recent network expenditures. This is a new triband antenna configuration now being deployed by Sprint that is able to do 4T4R MIMO on both 800 MHz and 1900 MHz in addition to 8T8R MIMO over 2.5 GHz. All in one single antenna. Previously, Sprint typically utilized two different antennas with one from Network Vision days being a hexport dual band unit that supports 800 MHz and 1900 MHz. While 2.5 GHz was an additional antenna and radio unit added on later. Some sites utilized (and may continue to utilize) another triband antenna model. This older generation triband antenna is a decaport (10 port) triband unit that support 4T4R on both 1900 MHz and 2.5 GHz with 2T2R on 800 MHz. This meant that an 8T8R radio would have its capabilities decreased as a result of going from 8T8R to 4T4R. With the development and deployment of this new 16 port triband antenna, Sprint is now poised to offer 800 MHz 4 antenna transmit and receive diversity alongside 1900 MHz, while 2.5 GHz is able to fully utilize the capability of an 8T8R radio. This means that the full capability of Sprint's 800 MHz, 1900 MHz, and LTE Plus (2.5 GHz) network can be utilized from a single triband antenna panel. Removing the limitations of the previous go-to triband antenna model. Because of these limitations, Sprint did not deploy the previous triband antenna panel in a wide scale. Now they are likely to deploy these more commonly. In fact, we are already seeing this occur in Washington State, Pittsburgh, and other places en masse. Above: Samsung 4T4R 800 MHz setup via two 800 MHz RRH-C2, 4T4R 1900 MHz RRH-P4 , & 8T8R 2.5 GHz RRH-V3 Photograph Source: Josh (ingenium) Currently, this type of setup has been found in Samsung vendor regions with two individual 2T2R 800 MHz RRUs to achieve 4T4R MIMO. Samsung and Sprint has a new 4 port 4T4R 800 MHz RRU that will be able to do the job of two existing 2T2R 800 MHz RRUs that will be deployed alongside this new type of antenna. This new Samsung 4 port low frequency radio is also available in Band 13 750 MHz for deployment in the Puerto Rico market due to the Sprint Open Mobile deal. Photograph Source: Chris92 Ericsson Setup Source: mdob07 This type of setup is yet to be seen in Ericsson or Nokia - Alcatel-Lucent territory. If you discover these in other vendor regions, be sure to post about it! ****If you're in Ericsson or Nokia / former Alcatel-lucent territory then replace the Samsung radios with the relevant Nokia, Alcatel-Lucent CDMA / LTE and Ericsson radios depending on region.***
  2. 3 points
    Tim YuSprint 4G Rollout UpdatesJanuary 12, 2018 - 5:30 PM PST "New year, new me. Am I right?" ~ signed Samsung Samsung has decided that the beginning of the new year is a great time to change. Samsung has decided its newest flagship Galaxy S9 and S9 Plus devices must meet with the FCC OET for certification far earlier than usual. With ever watchful and prying eyes, S4GRU staff discovered the twin filings for two devices with FCC IDs of A3LSMG960U and A3LSMG965U which follows the previous Samsung numeration of the Galaxy S8 / 8+ (950u/955u) and Galaxy S7 (930u/935u) respectively. In addition, previous leaks for purported international Galaxy S9 variant have captured the ID of 960F and 965F respectively. To keep this short and simple, the Galaxy S9, to date, is the most technologically powerful device we've seen at least for Sprint and possibly other entities and the following technical specifications should demonstrate why. CDMA BC: 0 / 1 / 10 GSM: 850 / 1900 WCDMA Bands: 2, 4 , 5 LTE Band: 2, 4, 5, 7, 12, 13, 14, 17, 25 , 26 , 29, 30, 38, 41, 66, 71 Downlink Carrier Aggregation (DL CA) 5xB41 (up to 5 B41 carriers aggregated) B25+41CA (up to 2 B41 carriers - 3 total carriers aggregated ) B26+41CA (up to 2 B41 carriers - 3 total carriers aggregated ) B25+26CA (up to 2 B25 carriers - 3 total carriers aggregated ) Uplink Carrier Aggregation (UL CA) 2xB41 256 / 64 QAM Downlink/ Uplink HPUE CAT 18 Modem 4x4 MIMO B2, 4, 25, 30 , 41, 66 12 spatial streams Holy bonanza! This phone supports up to 100 MHz of LTE spectrum being aggregated together from 5 individual Band 41 carriers! To add to that, it also supports FDD and TDD LTE carrier aggregation by utilizing Band 25 1900 MHz or Band 26 800 MHz as the primary component carrier which would contribute to downlink and uplink while Band 41 is aggregated to it would be downlink only secondary component carriers. Remember the saying of having B25 or B26 uplink with Band 41 downlink, anybody? Plus there is expansion of FDD carrier aggregation to that of between Band 25 and Band 26. This will help a ton in areas where Band 41 and its oodles of capacity does not reach. As the recent CDMA refarming nationwide on PCS spectrum has allowed Sprint to fire up an additional Band 25 carrier, this means in many Sprint markets there currently exists two Band 25 carriers in addition to a Band 26 carrier. This additional carrier is not forgotten and can now be used alongside the other Band 25 and Band 26 carrier for carrier aggregation. Last but not least, this phone is "Gigabit Class" by having up to 12 spacial streams means that 4x4 MIMO can be used for 3 separate B41 carriers when aggregated together instead of 2 in the previous generation which supports only 10 spacial streams. Though it was a moot point as the entire generation of Samsung flagships from this past year did not support 4x4 MIMO on Band 41, until now! A phone this size should not be able to pack so many technologies...but yet it does! A splendid phone and surely a must have for the S4GRU and other tech adept users!
×