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Ieee 802.11, Infrastructure mode, Ieee – Siemens SX763 User Manual

Page 140: Half duplex

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140

Glossary

Gigaset SX763 WLAN dsl / en / A31008-M707-R131-2-7619 / glossary.fm / 08.12.2006

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Half duplex
Operating mode for data transmission. Only one side can send and/or receive data at
the same time.
See also:

Full duplex

HTTP proxy
An HTTP proxy is a

Server

that network components use for their

Internet

traffic. All

requests are sent via the proxy.

Hub
A hub connects several network components in a star-topology network by sending all
the data it receives from one network component to all the other network components.
See also:

Switch

,

Bridge

,

Router

,

Gateway

IEEE
Institute of Electrical and Electronic Engineers
The IEEE is an international body for defining network standards, especially for stand-
ardising

LAN

technologies, transfer protocols, data transfer speeds and wiring.

IEEE 802.11

IEEE

802.11 is a standard for wireless LANs operating in the 2.4 GHz band. In so-called

Infrastructure mode

, terminals can be connected to a base station (

Access point

) or they

can connect with each other spontaneously (

Ad-hoc mode

).

IGMP
Internet Group Management Protocol
IGMP is an Internet

Protocol

that enables an Internet computer to inform neighbouring

routers that it is a member of a multicast group. With multicasting, a computer can send
content on the Internet to several other computers that have registered an interest in
the first computer's content. Multicasting can, for example, be used for multimedia pro-
grams for media streaming to recipients that have set up multicast group membership.

Infrastructure mode
Infrastructure mode is a way of operating wireless local networks (

WLANs

) in which an

Access point

handles the data traffic. Network components cannot establish a direct

connection with each other as is the case in

Ad-hoc mode

.