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Topic: Medium access control

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	Medium Access Control Protocols Performance in Satellite Communications
		MAC protocols are designed to coordinate the transmission of packets, retransmission of damaged packets, and resolution of collisions among stations during a contention period.
		MAC protocols are foundations in low-level network architecture and play a significant role in the performance of higher-level protocols such as multiservices and multimedia application protocols.
		MAC protocols for satellite communication can be classified based on their functionality with respect to the static or dynamic nature of the channel, the centralized or distributed control mechanism for channel assignments, and the adaptive behavior of the control algorithm.
	www.comsoc.org /~ci/private/1999/mar/Peyravi.html (7176 words)

	Medium access control and scheduling (RES222) (Site not responding. Last check: 2007-10-10)
		Although it is historically centred on Local Area Networks with shared broadcasting medium, the concept of medium access control is also widely used in point-to-multipoint local loops (wireless or optical access systems).
		With the emergence of the concept of quality of service, either differentiated or guaranteed, as soon as the low layers of data networks, a scheduling functionality must be coupled to medium access control.
		It deals with two types of local area networks for which medium access control is mandatory: wired networks and wireless networks.
	www.enst.fr /en/engineering/catalogue/Medium_access_control_and_scheduling.php (263 words)

	Medium Access Control Protocols for Multimedia Traffic in Wireless Networks
		MAC protocols are often classified according to their method of resource sharing, as well as their multiple access technology [4].
		CDMA is an access technique for spread spectrum where all remote terminals in a cell transmit using the whole spectrum of the channel simultaneously.
		The control is performed through a demand assignment protocol (except for very short packets) relying on a complex resource management performed at the base station and possibly in the network.
	www.comsoc.org /ni/private/1999/jul/Akyildiz.html (7510 words)

	Medium Access Control (MAC)
		The Medium Access Control (MAC) protocol is used to provide the data link layer of the Ethernet LAN system.
		The MAC protocol encapsulates a SDU (payload data) by adding a 14 byte header (Protocol Control Information (PCI)) before the data and appending a 4-byte (32-bit) Cyclic Redundancy Check (CRC) after the data.
		The maximum size of data which may be carried in a MAC frame using Ethernet is 1500 bytes (this is known as the MTU in IP).
	www.erg.abdn.ac.uk /users/gorry/course/lan-pages/mac.html (1116 words)

	Local Area Networks - Medium Access Control Methods
		In a broadcast network, medium access control is the order of DTEs sending packets to each other.
		On the network, a control token is a kind of package which is created on the network once.
		The control token prevents the collisions on the network because it ensures that only one DTE with the token can send data on the network.
	www.ii.metu.edu.tr /~ion504/demo/lan/html/medium.html (785 words)

	Medium Access Control in Wireless Sensor Networks
		This paper reviews medium access control (MAC), an enabling technology in wireless sensor networks.
		MAC protocols control how sensors access a shared radio channel to communicate with neighbors.
		It classifies existing MAC protocols and compares their advantages and disadvantages in the context of sensor networks.
	www.isi.edu /~johnh/PAPERS/Ye03c.html (274 words)

	Wireless LANs
		MSDU delivery ensures that the information in the MAC service data unit is delivered between the medium access control service access points.
		The sequence control field is 2 bytes and is split into 2 subfields, fragment number and sequence number.
		The MAC layer protocol used by wireless LANs as standarized in 802.11 is CSMA/CA.
	www.cse.wustl.edu /~jain/cis788-97/ftp/wireless_lans/index.htm (3441 words)

	Media Access Control - Wikipedia, the free encyclopedia
		The Media Access Control (MAC) data communication protocol sub-layer is the part of the seven-layer OSI model data link layer (layer 2).
		It provides addressing and channel access control mechanisms that makes it possible for several terminals or network nodes to communicate within a multipoint network, typically a local area network (LAN) or metropolitan area network (MAN).
		Media access control is often used as synonym to multiple access protocol, since the MAC sublayer provides the protocol and control mechanisms that are required for a certain channel access method.
	en.wikipedia.org /wiki/Media_Access_Control (298 words)

	802.11 MAC Layer Defined
		In general, the MAC Layer manages and maintains communications between 802.11 stations (radio network cards and access points) by coordinating access to a shared radio channel and utilizing protocols that enhance communications over a wireless medium.
		Often viewed as the "brains" of the network, the 802.11 MAC Layer uses an 802.11 Physical (PHY) Layer, such as 802.11b or 802.11a, to perform the tasks of carrier sensing, transmission, and receiving of 802.11 frames.
		As a condition to accessing the medium, the MAC Layer checks the value of its network allocation vector (NAV), which is a counter resident at each station that represents the amount of time that the previous frame needs to send its frame.
	www.wi-fiplanet.com /tutorials/article.php/1216351 (2020 words)

	2.1.1 Medium Access Control (Site not responding. Last check: 2007-10-10)
		The MAC layer is the core layer in the network protocol stack that determines the reliability and efficiency of data transmission among the sensor nodes [
		It has direct control of a sensor node's radio transceiver, hence is responsible for determining the access method of the communication medium.
		7] proposed a random access MAC protocol for WSNs that estimates the ideal frame size for a data transmission using a stochastic closed-loop control process to optimize network performance and conserve energy.
	www.csse.uwa.edu.au /~valance/proposal/node5.html (456 words)

	MAC - Medium Access Control (Site not responding. Last check: 2007-10-10)
		Media Access Control is the lower of the two sublayers of the Data Link Layer.
		In general terms, MAC handles access to a shared medium, and can be found within many different technologies.
		For example, MAC methodologies are employed within Ethernet, GPRS, and UMTS etc.
	www.mpirical.com /companion/Multi_Tech/MACControl.htm (45 words)

	The DECT pages: The Medium Access Control layer
		The Medium Access Control layer of the DECT standard (EN 300 175-3) describes the handling of the available medium and the related procedures.
		To setup a connection between a portable and a base system the MAC layer first selects a suitable channel and sends an access request in a P00 packet.
		Based on signal quality measurements performed by the Physical Layer the MAC layer continuesly checks for upcoming transmission problems and looks for better channels to either the same or other radio.
	www.xs4all.nl /~skydiver/DECT/details/MAC.html (807 words)

	Medium Access Control
		The use of a hub introduces new problems for the protocols because a transmitted frame will potentially be received by a number of different data-link layers.
		The address is called the medium access control (MAC) address - it is a unique identifier for every device connected to the shared medium.
		Example: The most widely known type of MAC address is the Ethernet address.
	www.cs.mu.oz.au /353/notes/node141.html (387 words)

	Medium access control
		In terms of non-switched ethernet, medium access control (MAC) is an effective methodology that allows devices on a LAN to share their interconnecting media.
		Carrier sensed multiple access with collision detection (CSMA/CD) is the MAC used by non-switched ethernet.
		CSMA/CD is an excellent solution to the problems of shared media access, but its use is problematic when a network is heavily loaded.
	burks.bton.ac.uk /burks/pcinfo/hardware/ethernet/mac.htm (487 words)

	IEEE 802.16 Medium Access Control and Service Provisioning (Site not responding. Last check: 2007-10-10)
		In this paper we describe the IEEE 802.16 Orthogonal Frequency Division Multiplexing (OFDM) and the 802.16 Orthogonal Frequency Division Multiple Access (OFDMA), Medium Access Control (MAC) protocols, both of which are key elements of the Worldwide Interoperability for Microwave Access Forum (WiMAX) deployments.
		We also discuss the types of provisioning and Quality of Service (QoS) that can be achieved using the features of this MAC protocol to facilitate the WiMAX deployments.
		IXP network processors and embedded Intel architecture processors to support the application of MAC functionality to the wide range of potential QoS and provisioning approaches.
	developer.intel.com /technology/itj/2004/volume08issue03/art04_ieee80216mac/p01_abstract.htm (211 words)

	[manet] CALL FOR BOOK CHAPTERS: "Medium Access Control in Wireless Networks"
		(MAC) has been a key design issue for various wireless networks.
		- Experimental Studies of Wireless Medium Access Control Protocols
		You are invited to submit a one-page proposal describing your chapter.
	rtg.ietf.org /lurker/message/20060413.141913.ab3727a1.en.html (362 words)

	IEEE-SA GetIEEE 802.11 LAN/MAN Wireless LANS
		IEEE 802.11a-1999 (8802-11:1999/Amd 1:2000(E)), IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements—Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications—Amendment 1: High-speed Physical Layer in the 5 GHz band
		IEEE 802.11b-1999 Supplement to 802.11-1999,Wireless LAN MAC and PHY specifications: Higher speed Physical Layer (PHY) extension in the 2.4 GHz band
		IEEE 802.11g-2003 IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements—Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications—Amendment 4: Further Higher-Speed Physical Layer Extension in the 2.4 GHz Band
	standards.ieee.org /getieee802/802.11.html (410 words)

	Media Access Control from FOLDOC (Site not responding. Last check: 2007-10-10)
		The interface between a node's Logical Link Control and the network's physical layer.
		See also MAC Address, Ethernet, IEEE 802.3, token ring.
		Nearby terms: measurement « meatspace « meatware « Media Access Control » Media Access Unit » Media Converter » Media Gateway Control Protocol
	ftp.sunet.se /foldoc/foldoc.cgi?Medium+Access+Control (56 words)

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