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Making The Most Out of the Upstream

As consumer devices get more advanced, they empower people to be their own content creator; from family photos to social network updates, everyone has something to share.  Robust infrastructure networks are required to quickly load this content to the cloud; however, our current networks are struggling to keep up.  Service providers need to be able to able to serve more subscribers and do so with faster data rates at higher volumes to meet growing consumer demands, but how?

There are always new networks,  although the more cost effective and realistic solution for cable is to improve the efficiency of their existing HFC networks.  The key to doing this in the upstream is to make better use of the higher and lower ends of the 5-42 MHz upstream spectrum, areas previously unusable due to noise ingress.   

By working together, Motorola Mobility and Cox Communications were recently to  combine the  new RX48 decoupled upstream module card from Motorola which hosts unique front end supporting a very high-sensitivity receiver which allowed for higher level 256QAM modulation and S-SDMA to clean up the 5-20 MHz return and allow for 32 and 64QAM to be achieved.   This resulted virtually doubling the upstream path capacity, to 150 Mb\s per second, and since the RX48 could achieve 256QAM, Motorola can offer 100 Mb\s over 3 upstream bonded channels where other vendors require four.

Additionally, Motorola and Cox announced a new upstream DOCSIS® speed record of 356 Mb\s using 5-85 MHz, 256QAM and S-CDMA.  The test was completed on Cox’s Las Vegas live plant and provided great insight into just how much potential the HFC upstream spectrum has to offer,

Such increased data capacity allows Cox to reach more customers, including both business and residential customers, using the same return path by enabling segmentation of residential and business customers where symmetrical services are demanded. 

That’s just a couple of way’s Motorola Mobility can help you to optimize an existing network.  As we continue to look for new and innovative approaches to getting the most out of today’s HFC networks; What are you doing to address these challenges?  If you could open up new levels of bandwidth, what new applications or services would you offer?

One Response

  1. ケイト マザーズバッグ

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