Motorola AP-51XX 用户手册
Introduction
1-15
1.2.16 Support for CAM and PSP MUs
The access point supports both CAM and PSP powered MUs. CAM (Continuously Aware Mode) MUs
leave their radios on continuously to hear every beacon and message transmitted. These systems
operate without any adjustments by the access point.
leave their radios on continuously to hear every beacon and message transmitted. These systems
operate without any adjustments by the access point.
A beacon is a uniframe system packet broadcast by the AP to keep the network synchronized. A
beacon includes the ESSID, MAC address, Broadcast destination addresses, a time stamp, a DTIM
(Delivery Traffic Indication Message) and the TIM (Traffic Indication Map).
beacon includes the ESSID, MAC address, Broadcast destination addresses, a time stamp, a DTIM
(Delivery Traffic Indication Message) and the TIM (Traffic Indication Map).
PSP (Power Save Polling) MUs power off their radios for short periods. When a MU in PSP mode
associates with an access point, it notifies the access point of its activity status. The access point
responds by buffering packets received for the MU. PSP mode is used to extend an MU’s battery life
by enabling the MU to “sleep” during periods of inactivity.
associates with an access point, it notifies the access point of its activity status. The access point
responds by buffering packets received for the MU. PSP mode is used to extend an MU’s battery life
by enabling the MU to “sleep” during periods of inactivity.
1.2.17 Statistical Displays
The access point can display robust transmit and receive statistics for the WAN and LAN ports.
WLAN stats can be displayed collectively and individually for enabled WLANs. Transmit and receive
statistics are available for the access point’s 802.11a and 802.11b/g radios. An advanced radio
statistics page is also available to display retry histograms for specific data packet retry information.
WLAN stats can be displayed collectively and individually for enabled WLANs. Transmit and receive
statistics are available for the access point’s 802.11a and 802.11b/g radios. An advanced radio
statistics page is also available to display retry histograms for specific data packet retry information.
Associated MU stats can be displayed collectively and individually for specific MUs. An echo (ping)
test is also available to ping specific MUs to assess association strength. Finally, the access point
can detect and display the properties of other APs detected within the access point’s radio coverage
area. The type of AP detected can be displayed as well as the properties of individual APs.
test is also available to ping specific MUs to assess association strength. Finally, the access point
can detect and display the properties of other APs detected within the access point’s radio coverage
area. The type of AP detected can be displayed as well as the properties of individual APs.
For detailed information on available access point statistical displays and the values they represent,
see
see
1.2.18 Transmit Power Control
The access point has a configurable power level for each radio. This enables the network
administrator to define the antenna’s transmission power level in respect to the access point’s
placement or network requirements as defined in the site survey.
administrator to define the antenna’s transmission power level in respect to the access point’s
placement or network requirements as defined in the site survey.
For detailed information on setting the radio transmit power level, see