MAC Protocol for a wireless Point to Multi-Point ATM Access System
نویسندگان
چکیده
This paper deals with the Medium Access Control (MAC) functions applied to a Broadband Wireless Point-to-MultiPoint (PMP) Radio Access System. The communication between the master station and the peripheral stations is based on a TDM/TDMA scheme in downlink/uplink direction: both the downlink and uplink data streams are a sequence of Bursts, each one allocated in a Time Slot of the multiplexing scheme. The suitable TDMA slot assignment in the uplink direction will be assured by the MAC processor located in the master station according to the state of connections being configured in each peripheral station; this status information is reported to the master station by means of uplink MAC signaling information. The protocol assures the fulfillment of QoS parameters of each connection belonging to different classes of traffic defined in international bodies. In this paper the MAC algorithms and the related information streams are further dealt with.
منابع مشابه
Multi-channel Medium Access Control Protocols for Wireless Sensor Networks: A Survey
Extensive researches on Wireless Sensor Networks (WSNs) have been performed and many techniques have been developed for the data link (MAC) layer. Most of them assume single-channel MAC protocols. In the usual dense deployment of the sensor networks, single-channel MAC protocols may be deficient because of radio collisions and limited bandwidth. Hence, using multiple channels can significantly ...
متن کاملMulti-channel Medium Access Control Protocols for Wireless Sensor Networks: A Survey
Extensive researches on Wireless Sensor Networks (WSNs) have been performed and many techniques have been developed for the data link (MAC) layer. Most of them assume single-channel MAC protocols. In the usual dense deployment of the sensor networks, single-channel MAC protocols may be deficient because of radio collisions and limited bandwidth. Hence, using multiple channels can significantly ...
متن کاملMASCARA, a MAC Protocol for Wireless ATM
The Medium Access Control (MAC) protocol of a Wireless ATM (WATM) system is a critical component as it lies between the traditional ATM layer and the RF-based physical layer whose characteristics are far from those of fibberor copper-based conventional ATM media. The constraints imposed on the MAC protocol of a WATM system lead to consider the design of a Half Duplex (HDX), point-to-multipoint,...
متن کاملAn Overview of Proposed MAC Algorithms for Wireless ATM
The dominant trend in telecommunications in recent years, is towards mobile communications. The tremendous commercial success for mobile telephony has spurred research efforts in the area of mobile broadband access. The next generation network will extend today’s (mainly) voice-only mobile networks to multi-service networks, able to carry data and video services alongside the traditional voice ...
متن کاملA Hidden Node Aware Network Allocation Vector Management System for Multi-hop Wireless Ad hoc Networks
Many performance evaluations for IEEE 802.11distributed coordination function (DCF) have been previouslyreported in the literature. Some of them have clearly indicatedthat 802.11 MAC protocol has poor performance in multi-hopwireless ad hoc networks due to exposed and hidden nodeproblems. Although RTS/CTS transmission scheme mitigatesthese phenomena, it has not been successful in thoroughlyomit...
متن کاملEvaluation of a BIBD Based Directional MAC Protocol for Wireless Ad Hoc Networks
The use of directional antennas in wireless ad hoc networks can significantly improve global performance due to a high spatial channel reuse. Nevertheless, its introduction poses new location dependent problems related to the MAC protocol. In this paper, the Balanced Incomplete Block Design theory has been exploited to develop a new MAC protocol for wireless ad hoc networks using directional ant...
متن کامل