Sentence examples for medium access contention from inspiring English sources
Medium access contention complicated by hidden/exposed terminal problems.
When this occurs, the medium access contention increases, which produces a high delay on message delivery, message collisions, and hidden terminals.
In order to make sure that data transmissions were affected by BG traffic, the BG transmitters were set to broadcast packets continuously, that is, these transmission attempts could only be delayed by medium access contention.
To enhance the QoS support, IEEE 802.11e introduces a protocol called the HCF which includes two medium access mechanisms: contention-based channel access and controlled channel access which are referred to as the EDCA and HCCA.
The IEEE 802.15.4 protocol is considered to be unsuitable for industrial networks because its medium access control method is contention-based CSMA/CA, which exhibits unstable performance with an unbounded delay distribution under heavy traffic.
Its operation bases on station contention for medium access using a backoff procedure.
Specifically, when node 24 needs to communicate with node 12 on channel 5 and node 28 needs to communicate with node 18 on the same channel simultaneously, contention for medium access based on CSMA/CA will occur on channel 5.
As contention-based or reservation-based (i.e., contention-free) medium access control (MAC) protocols in existing wireless link-layer standards cannot efficiently support multimedia applications such as video streaming, a hybrid approach has been proposed, which uses both contention and reservation-based channel access mechanisms to transmit packets for each video source.
HCCA is in charge of the contention-free medium access.
Our proposed scheme deals with this problem by integrating a contention-free medium access control (MAC) strategy for reliable communication.
This article presents a fully distributed contention-free medium access strategy that simultaneously exploits channel diversity and maximizes data reliability.
