IEEE 802.11K-2008 pdf download 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: Radio Resource Measurement of Wireless LANs
3.174 antenna connector: The measurement point of reference for RF easurements in a STA. Theantenna connector is the point in the STA architecture representing the input of the receiver (output of theantenna) for radio reception and the input of the antenna (output of the transmitter) for radio transmission, Insystems using multiple antennas or antenna arrays, the antenna connector is a virtual point representing theaggregate output of (or input to) the multiple antennas. In systems using active antenna arrays withprocessing, the antenna connector is the output of the active array, which includes any processing gain of theactive antenna subsystem.
3.175 average noise power indicator (ANPI): A MAC indication of the average noise plus interferencepower measured when the channel is idle as defined by three simultaneous conditions: 1) the Virtua CSmechanism indicates idle channel, 2) the STA is not transmitting a frame, and 3) the STA is not receiving aframe.
3176 azimuth: The horizontal orientation of the front surface of a station or of a radio antenna system’smain lobe measured clockwise from True North.
3.177 basic service set (BSS) transition: A STA movement from one BSS to another BSS in the same ESS
3.178 extended service set (ESS) transition: A STA ovement from one BSS in one ESS to another BSin a different ESS.
3.179 idle power indicator (IPI): A PHY indication of the total channel power (noise and interference) asmeasured in the channel at the receiving antenna connector while the STA is idle, i.e, neither transmittingnor receiving a frame.
3.180 LCI subjcct local: The term used when the LCl request is for the location of the requesting STA, i.e.when the requesting STA asks“Where am I?”
3181 LCI subject remote: The term used when the LCI request is for the location of the reporting STA.i.e., when the requesting STA asks “Where are you?”
3.182 location configuration information (LCI): As defined in IETF RFC 3825: includes latitude, longitude. and altitude, with resolution indicators for each.
NOTE_-Information on references can be found in Clause 2
3.183 neighbor AP: Any AP that is a potential service set transition candidate
3.184 non-operating channel: A channel that is not the operating channel of the BSS or IBSS of which theSTA is a member.
3.185 operating channel: The operating channel is the channel used by the serving AP of the BSS totransmit beacons. In an IBSS, the operating channel is the channel used by the lBSS DFS owner to transmitbeacons.
3.186 received channel power indicator (RCPI): An indication of the total channel power (signal, noise.and interference) of a received IEEE 802.1 frame measured on the channel and at the antenna connectorused to receive the frame.
3.187 received signal to noise indicator (RSNI): An indication of the signal to noise plus interference ratioof a received IEEE 802.11 frame. RSNI is defined by the ratio of the received signal power (RCPI-ANPI) tothe noise plus interference power (ANPl) as measured on the channel and at the antenna connector used toreceive the frame.
NOTE–RCPI and ANPI might not be measured simultaneously: see 1l.10.8.4 for details.