Wireless communication method and wlan for signaling deferral management messages

Abstract

A deferral management method is implemented in a wireless local area network (WLAN) including an access point (AP) and a plurality of wireless transmit/receive units (WTRUs). The AP sends a deferral management capabilities request message to the WTRUs to determine the deferral management capabilities of the WTRUs. In response, each of the WTRUs sends a deferral management capabilities indicator message to the AP. The AP may also send a deferral management parameter set message to the WTRUs to indicate values for setting deferral management parameters. In response, each of the WTRUs may optionally send a deferral management parameter set execution confirmation message to the AP. The WTRUs may also set the values of various deferral management parameters in accordance with a certain rule specified in a deferral management rule message sent by the AP. Optionally, the WTRUs may respond to the AP with a deferral management rule execution confirmation message.

1 . A method of deferral management for use in an access point (AP), the method comprising:
 transmitting a first message to request a report of deferral management capabilities of a wireless transmit/receive unit (WTRU), wherein the first message includes deferral management rules supported by the AP;   receiving a second message, wherein the second message includes a deferral management capabilities indicator and deferral management rules supported by the WTRU; and   transmitting a third message in response to the second message, wherein the third message includes additional deferral management rules including a transmission power parameter and a clear channel assessment energy detect (CCA-ED) parameter.   
     
     
         2 . The method of  claim 1  further comprising:
 receiving a response message in response to transmitting the third message indicating acceptance of the additional deferral management rules. 
 
     
     
         3 . The method of  claim 1  wherein the third message includes at least one of maximum transmission power, minimum transmission power, or dynamic range. 
     
     
         4 . The method of  claim 1  wherein the third message includes at least one of a minimum defer threshold (DT)/energy detect threshold (EDT) for the WTRU and a maximum DT/EDT for the WTRU. 
     
     
         5 . The method of  claim 1  further comprising:
 comparing deferral management capabilities of a plurality of WTRUs associated with the access point (AP); and 
 determining an optimal energy detect threshold (EDT) for the plurality of WTRUs associated with the AP. 
 
     
     
         6 . The method of  claim 1  wherein the third message is transmitted as a unicast signal. 
     
     
         7 . A method of deferral management for use in a wireless transmit/receive unit (WTRU), the method comprising:
 receiving a first message requesting a report of deferral management capabilities, wherein the first message includes deferral management rules supported by an access point (AP);   transmitting a second message, wherein the second message includes a deferral management capabilities indicator and deferral management rules supported by the WTRU; and   receiving a third message in response to the second message, wherein the third message includes additional deferral management rules including a transmission power parameter and a clear channel assessment energy detect (CCA-ED) parameter.   
     
     
         8 . The method of  claim 7  further comprising:
 transmitting a response message in response to receiving the third message indicating acceptance of the additional deferral management rules. 
 
     
     
         9 . The method of  claim 7  wherein the third message includes at least one of maximum transmission power, minimum transmission power, or dynamic range. 
     
     
         10 . The method of  claim 7  wherein the third message includes at least one of a minimum defer threshold (DT)/energy detect threshold (EDT) for the WTRU and a maximum DT/EDT for the WTRU. 
     
     
         11 . An access point (AP) for deferral management, the AP comprising:
 a transmitter configured to transmit a first message to request a report of deferral management capabilities of a wireless transmit/receive unit (WTRU), wherein the first message includes deferral management rules supported by the AP;   a receiver configured to receive a second message, wherein the second message includes a deferral management capabilities indicator and deferral management rules supported by the WTRU; and   wherein the transmitter is further configured to transmit a third message in response to the second message, wherein the third message includes additional deferral management rules including a transmission power parameter and a clear channel assessment energy detect (CCA-ED) parameter.   
     
     
         12 . The AP of  claim 11 , wherein
 the receiver is further configured to receive a response message in response to transmitting the third message indicating acceptance of the additional deferral management rules.   
     
     
         13 . The AP of  claim 11 , wherein the third message includes at least one of maximum transmission power, minimum transmission power, or dynamic range. 
     
     
         14 . The AP of  claim 11 , wherein the third message includes at least one of a minimum defer threshold (DT)/energy detect threshold (EDT) for the WTRU and a maximum DT/EDT for the WTRU. 
     
     
         15 . The AP of  claim 11 , further comprising:
 a processor configured to compare deferral management capabilities of a plurality of WTRUs associated with the AP, and to determine an optimal energy detect threshold (EDT) for the plurality of WTRUs.   
     
     
         16 . The AP of  claim 11 , wherein the transmitter is further configured to transmit the third message as a unicast signal. 
     
     
         17 . A wireless transmit/receive unit (WTRU) for deferral management, the WTRU comprising:
 a receiver configured to receive a first message to request a report of deferral management capabilities of the WTRU, wherein the first message includes deferral management rules supported by an access point (AP);   a transmitter configured to transmit a second message, wherein the second message includes a deferral management capabilities indicator and deferral management rules supported by the WTRU; and   wherein the receiver is further configured to receive a third message in response to the second message, wherein the third message includes additional deferral management rules including a transmission power parameter and a clear channel assessment energy detect (CCA-ED) parameter.   
     
     
         18 . The WTRU of  claim 17 , wherein the transmitter is further configured to transmit a response message in response to receiving the third message indicating acceptance of the additional deferral management rules. 
     
     
         19 . The WTRU of  claim 17  wherein the third message includes at least one of maximum transmission power, minimum transmission power, or dynamic range. 
     
     
         20 . The WTRU of  claim 17  wherein the third message includes at least one of a minimum defer threshold (DT)/energy detect threshold (EDT) for the WTRU and a maximum DT/EDT for the WTRU.