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| The IEEE standard for wireless LANs using the U-NII spectrum, OFDM encoding, at speeds of up to 54 Mbps. |
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| The IEEE standard for wireless LANs using the ISM spectrum, DSSS encoding, and speeds of up to 11 Mbps. |
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| The IEEE standard for wireless LANs using the ISM spectrum, OFDM or DSSS encoding, and speeds of up to 54 Mbps. |
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| The IEEE standard for wireless LAN security, including authentication and encryption. |
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| A wireless LAN device that provides a means for wireless clients to send data to each other and to the rest of a wired network, with the AP connecting to both the wireless LAN and the wired Ethernet LAN. |
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| In wireless LANs, a method or mode of operation in which clients send data directly to each other without the use of a wireless access point (AP). |
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| In wireless LANs, a WLAN with a single access point. |
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| In wireless LANs, a WLAN with multiple access points to create one WLAN, allowing roaming between the APs. |
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| Carrier sense multiple access with collision avoidance |
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| Carrier sense multiple access with collision avoidance |
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Definition
| A media-access mechanism that defines how devices decide when they can send, with a goal of avoiding collisions as much as possible. IEEE WLANs use CSMA/CA. |
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| Direct Sequence Spread Spectrum |
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| Direct Sequence Spread Spectrum |
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Definition
| A method of encoding data for transmission over a wireless LAN in which the device uses 1 of 11 (in the USA) nearby frequencies in the 2.4-GHz range. |
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Definition
| Frequency Hopping Spread Spectrum |
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| Frequency Hopping Spread Spectrum |
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Definition
| A method of encoding data on a wireless LAN in which consecutive transmissions occur on different nearby frequency bands as compared with the prior transmission. Not used in modern WLAN standards. |
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Definition
| A mode of wireless LAN (WLAN) operation in which WLAN clients send and receive data with an access point (AP), which allows the clients to communicate with the wired infrastructure through the AP. Clients do not send data to each other directly; the AP must receive the data from one client, and then send the data to the other WLAN client. |
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| Orthogonal Frequency Division Multiplexing |
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| Orthogonal Frequency Division Multiplexing |
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| A method of encoding data in wireless LANs that allows for generally higher data rates than the earlier FHSS and DSSS encoding methods. |
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| A text value used in wireless LANs to uniquely identify a single WLAN. |
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| An organization formed by many companies in the wireless industry (an industry association) for the purpose of getting multivendor certified-compatible wireless products to market in a more timely fashion than would be possible by simply relying on standardization processes. |
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| A trademarked name of the Wi-Fi Alliance that represents a set of security specifications that predated the standardization of the IEEE 802.11i security standard. |
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| An early WLAN security specification that used relatively weak security mechanisms, using only preshared keys and either no encryption or weak encryption. |
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| A wireless device that wants to gain access to a wireless access point for the purpose of communicating with other wireless devices or other devices connected to the wired internetwork. |
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| The Wi-Fi Alliance trademarked name for the same set of security specifications defined in the IEEE 802.11i security standard. |
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| Measurement for radio wave interference which compares WLAN signal to other undesired signals (noise) in the same space. The higher the SNR, the better the WLAN devices can send data successfully. |
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