Dynamic bandwidth allocation is a technique by which traffic bandwidth in a shared telecommunications medium can be allocated on demand and fairly between different users of that bandwidth.
This is a form of
bandwidth management
Bandwidth management is the process of measuring and controlling the communications (traffic, packets) on a network link, to avoid filling the link to capacity or overfilling the link,https://www.internetsociety.org/wp-content/uploads/2017/08/BWro ...
, where the sharing of a link adapts in some way to the instantaneous traffic demands of the nodes connected to the link.
Dynamic bandwidth allocation takes advantage of several attributes of shared networks:
# all users are typically not connected to the network at one time
# even when connected, users are not transmitting data (or voice or video) at all times
# most traffic occurs in bursts—there are gaps between packets of information that can be filled with other user traffic
Different network protocols implement dynamic bandwidth allocation in different ways. These methods are typically defined in
standards developed by standards bodies such as the
ITU,
IEEE
The Institute of Electrical and Electronics Engineers (IEEE) is an American 501(c)(3) organization, 501(c)(3) public charity professional organization for electrical engineering, electronics engineering, and other related disciplines.
The IEEE ...
,
FSAN, or
IETF
The Internet Engineering Task Force (IETF) is a standards organization for the Internet standard, Internet and is responsible for the technical standards that make up the Internet protocol suite (TCP/IP). It has no formal membership roster ...
. One example is defined in the ITU G.983 specification for
passive optical network
A passive optical network (PON) is a fiber-optic telecommunications network that uses only ''unpowered'' devices to carry signals, as opposed to electronic equipment. In practice, PONs are typically used for the '' last mile'' between Internet ...
(PON).
See also
*
Statistical multiplexing
Statistical multiplexing is a type of digital communication link sharing, sometimes abbreviated as STDM. It is very similar to dynamic bandwidth allocation (DBA). In statistical multiplexing, a communication channel is divided into an arbitrary num ...
*
Channel access method
In telecommunications and computer networks, a channel access method or multiple access method allows more than two terminals connected to the same transmission medium to transmit over it and to share its capacity. Examples of shared physical ...
*
Dynamic channel allocation
In radio resource management for wireless and cellular networks, channel allocation schemes allocate bandwidth and communication channels to base stations, access points and terminal equipment. The objective is to achieve maximum system spectral ...
*
Reservation ALOHA
ALOHAnet, also known as the ALOHA System, or simply ALOHA, was a pioneering computer networking system developed at the University of Hawaii. ALOHAnet became operational in June 1971, providing the first public demonstration of a wireless packe ...
(R-ALOHA)
References
Computer networks engineering
Telecommunications techniques
Radio resource management
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