What is backhaul?

Answer 1

In the context of broadcast television, backhaul refers to program content that is transmitted to a television station or receiving entity where it will be integrated into a finished show. The term is independent of the medium being used to send the backhaul, but satellite transmission is very common.

Reporters' live shots, sporting events and network programming are all examples of television content that is backhauled to a station before being made available to the public through that station. Cable TV channels (ESPN, HBO, etc.) are also backhauled to cable head ends before making their way to the consumer.

There exists a dedicated group of enthusiasts who use TVRO (TV Receive Only) gear such as (as they call them) big ugly dishes or BUDs to peek in on backhaul signals that are available on any of the dozens of communications satellites that are visible from almost any point on Earth. In its early days, their hobby was strengthened by the fact that most backhaul was analog and "in the clear" (unencrypted) which made for a vast smorgasbord of free television available for the technically inclined amateur. In recent years, full-time content and cable channels have added encryption and occasional signals are steadily becoming digital, which has had a deleterious effect on the hobby.

Some digital signals remain freely accessible (sometimes using Ku band dishes as small as one metre) under the international DVB standard or the US Motorola-proprietary Digicipher system. The small dishes may either be fixed (much like DBS antennas), positioned using a rotor (usually DiSEqC-standard) or may be toroidal in design (twin toroidal reflectors focus the incoming signal as a line, not a point, so that multiple LNBs may receive signal from multiple satellites). A blind-search receiver is often used to try every possible combination of frequency and bitrate to search for backhaul signals on individual communication satellites.

The 1992 documentary Feed (see links, below) was compiled almost entirely using unedited backhaul from campaign coverage by local and network television. A similar documentary about the 1992 U.S. presidential election named Spin was made in the same way in 1995.
In telecommunications, backhauling is concerned with transporting traffic between distributed sites (typically access points) and more centralised points of presence.

Examples include:

Connecting wireless base stations to the corresponding base station controllers.
Connecting DSLAMs to the nearest ATM or Ethernet aggregation node.
Connecting a large company's site to a metro Ethernet network.
The choice of backhaul technology must take account of such parameters as capacity, cost, reach, and the need for such resources as frequency spectrum, optical fibre or rights of way. Backhaul technologies include:

Point-to-point microwave transmission (terrestrial or, in some cases, by satellite)
Point-to-multipoint microwave access technologies, such as LMDS, WiFi, WiMAX, etc., can also be used for backhauling purposes
Dark fibre
Various DSL variants, such as ADSL and SHDSL
PDH and SDH/SONET interfaces, such as (fractional) E1/T1, E3, T3, STM-1/OC-3, etc.
Ethernet
Backhaul capacity can also be leased from another network operator, in which case the choice of technology is generally made by this other network operator.
1) In wireless network technology, to transmit voice and data traffic from a cell site to a switch, i.e., from a remote site to a central site.
(2) In satellite technology, to transmit data to a point from which it can be uplinked to a satellite.

(3) To transmit data to a network backbone

Answer 2

Hmm I have heard the term used in Firefighting. It means after the fire is put out they "stir up the ashes" to expose any hot coals and then get some water on this too. It is usually the job of the flash watch ( a team that stays behind to make sure the fire doesn't reflash) to backhaul the fire. It might have other uses but I am not sure. I think it also refers to a type of Loader/buldozzer that is used in construction it has a "bucket" on the back that can lift up smaller loads than the front "dozer" but has more manueverability. That bucket is the "backhaul" bucket. because it can scoop loads "back towards" itself (essentially this is the same thing as the firefighter who scoops through the ashes so they both might have the same root of "hauling something back towards oneself")

Answer 3

In an different description, it relatively is whilst television Broadcasting transmits stay video variety the east coast to the west coast via way of satellite tv for pc for later viewing. See 8 pm eastern, 9 pm substantial and, 8 pm Pacific situations. there's a three hour time distinction between ny and Las Angels.

Answer 4

A backhaul in the trucking industry is when you drop off your load in a city and you give a reduced rate to a shipper if he has a backhaul for you on your way home . Usually you pick up gas money and expenses plus so it beats deadheading back .

Answer 5

don't know