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How much distance can be covered over copper cables?

Depends on variables such as physical copper line quality and noise environment.

How to eliminate crosstalk between a bundle of wires in the G.hn Access solution?

Using VectorBoost technology, VectorBoost is the feature of G.hn Access that allows twisted pair copper telephone wire to reach its maximum capacity, even under crosstalk from other subscribers in the same binder. It can ensure the optimal allocation of resources between the neighboring lines in accordance with their real-time traffic needs and can run locally on a DPU (Distribution Point Unit) or in the cloud. VectorBoost can be fine-tuned to meet service providers’ requirements and can be easily upgraded as more computing resources become available in the carrier private cloud. In addition to mitigating crosstalk between pairs of a copper binder, VectorBoost optimizes the allocation of spectrum by boosting the spectrum only for subscribers needed extra bandwidth. Coupled with coordinated Dynamic Time Allocation (cDTA), it delivers the optimal bandwidth allocation in real-time for each G.hn link.

Can G.hn access solution coexist with VDSL technology?

Yes, frequency notching function for the co-existence with other services.
With ADSL: No frequency overlapped (No interference)
With VDSL: 
(1) Even though the frequency band overlaps with VDSL (3.5~30MHz), its power level is low (-70dBm/Hz), so it does not affect the legacy VDSL service whose power is much higher (-56.5dBm/Hz) (* G.fast uses higher power level, so its interference to VDSL is high)  
(2) Supports PSD shaping for VDSL frequency.

How many subscribers are supported in the same share bundle cable?

Supports up to 240pcs G.hn CPEs in the same share bundle cable, and you should use clock synchronization cables to connect all DPUs (Distribution Point Unit).

How do setup a copper cable pin-out for a G.hn connection?

It is compatible with Phone line wire and Ethernet wire, you can use them directly.
For SISO profile only require one pair of copper to bring up the G.hn connection (RJ45 pins 4&5)
for MIMO profile needs 2 pair of copper (RJ45 pins 3&6, and pins 4&5)

The diagrams are as follows:

What is VectorBoost ?

In real networks, in the same time, usually only a very few users have busy network traffic, while the rest of the users are idle, if there is no DSM (Dynamic Spectrum Management) technology, the spectrum allocated to each user is fixed, which wastes spectrum resources in vain.
VectorBoost is a G.hn DSM technology for bundled copper cables. By boosting the spectrum just when subscribers demand more bandwidth, it optimizes the spectrum allocation in addition to reducing crosstalk between pairs of a copper binder. When used in conjunction with coordinated Dynamic Time Allocation (cDTA), it provides the ideal bandwidth distribution for each G.hn link in real-time. This technology will enable users to have better network performance in most of the time.



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First Mile specializes in carrier-grade telecom products' development.
Email: sales@firstmile.com.cn

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