Television band (tvbd) channel quieting across diverse radio access technologies

Abstract

A method and system is disclosed for communicating data using diverse radio access technologies (RATs) in a wireless communication system. A wireless transmit/receive unit (WTRU) may transmit data over a first channel using a first radio access technology (RAT) and a network node may receive information that indicates that the WTRU is operating on the first channel using the first RAT. The network node may determine, based on the RAT being used by the WTRU, that the WTRU should move to a second channel prior to a quiet period on the first channel. The network node may transmit a first command to the WTRU that indicates that the WTRU should move to the second channel. The WTRU may move from the first channel to the second channel in response to receiving the first command and the WTRU may transmit data over the second channel using the first RAT.

What is claimed is: 
     
         1 . A method for use in a wireless communications system, the method comprising:
 a wireless transmit/receive unit (WTRU) comprising:
 transmitting data over a first channel using a first radio access technology (RAT); 
   a network node comprising:
 receiving information, wherein the information indicates that the WTRU is operating on the first channel using the first RAT; 
 determining, based on the RAT being used by the WTRU, that the WTRU should move to a second channel prior to a quiet period on the first channel; and 
 transmitting a first command to the WTRU, wherein the first command indicates that the WTRU should move to a second channel; and 
   the WTRU further comprising:
 moving from the first channel to the second channel, in response to receiving the first command from the network node; and 
 transmitting data over the second channel using the first RAT. 
   
     
     
         2 . The method of  claim 1  further comprising:
 the network node transmitting a second command to the WTRU, wherein the second command indicates that the WTRU should move back to the first channel; and 
 the WTRU:
 receiving the second command; 
 moving to the first channel; and 
 transmitting data over the first channel using the first RAT. 
 
 
     
     
         3 . The method of  claim 1 , wherein the network node determining that the WTRU should move to the second channel is further based on data indicating that a second WTRU using the first RAT is operating on the second channel. 
     
     
         4 . The method of  claim 3 , wherein the network node further comprises:
 receiving data indicating that a third WTRU is operating on the first channel using a second RAT;   receiving data indicating that a fourth WTRU is operating on a third channel using the second RAT; and   determining, based on the third WTRU and the fourth WTRU using the second RAT, that the third WTRU should move to the third channel prior to the quiet period; and   transmitting a second command to the third WTRU, wherein the second command indicates that the WTRU should move to the third channel.   
     
     
         5 . The method of  claim 1 , wherein the first channel and the second channel are Television Band (TVBD) channels. 
     
     
         6 . The method of  claim 1 , wherein the first command is an Electronics Engineers (IEEE) Media Independent Coordination (MIC) message, an IEEE 802.19x message, an IEEE 802.11x message, an IEEE 802.16x message, or an 802.22x message. 
     
     
         7 . The method of  claim 1 , further comprising:
 the network node determining a start time for the quiet period based on a radio characteristic of a radio access network on which the WTRU is operating, wherein the command is based on the start time for the quiet period.   
     
     
         8 . The method of  claim 7 , wherein the radio characteristic is channel availability or channel loading. 
     
     
         9 . The method of  claim 1 , wherein the WTRU is an unlicensed device. 
     
     
         10 . A wireless communications system comprising:
 a wireless transmit/receive unit (WTRU) comprising:
 a transceiver configured to transmit data over a first channel using a first radio access technology (RAT); 
   a network node comprising:
 a communications interface configured to receive information, wherein the information indicates that the WTRU is operating on the first channel using the first RAT; 
 a processor configured to determine, based on the RAT being used by the WTRU, that the WTRU should move to a second channel prior to a quiet period on the first channel; and 
 the communications interface configured to transmit a first command to the WTRU, wherein the first command indicates that the WTRU should move to a second channel; and 
   the WTRU further comprising:
 a processor configured to move from the first channel to the second channel, in response to receiving the first command from the network node; and 
 the transceiver configured to transmit data over the second channel using the first RAT. 
   
     
     
         11 . The wireless communications system of  claim 10  further comprising:
 the network node communications interface is configured to transmit a second command to the WTRU, wherein the second command indicates that the WTRU should move back to the first channel; and 
 the WTRU further comprising:
 the transceiver configured to receive the second command; 
 the processor configured to move to the first channel; and 
 the transceiver configured to transmit data over the first channel using the first RAT. 
 
 
     
     
         12 . The wireless communications system of  claim 10 , wherein the network node processor is configured to determine that the WTRU should move to the second channel is further based on data indicating that a second WTRU using the first RAT is operating on the second channel. 
     
     
         13 . The wireless communications system of  claim 12 , wherein the network node further comprises:
 the communications interface configured to receive data indicating that a third WTRU is operating on the first channel using a second RAT;   the communications interface configured to receive data indicating that a fourth WTRU is operating on a third channel using the second RAT; and   the processor configured to determine, based on the third WTRU and the fourth WTRU using the second RAT, that the third WTRU should move to the third channel prior to the quiet period; and   the communications interface configured to transmit a second command to the third WTRU, wherein the second command indicates that the WTRU should move to the third channel.   
     
     
         14 . The wireless communications system of  claim 10 , wherein the first channel and the second channel are Television Band (TVBD) channels. 
     
     
         15 . The wireless communications system of  claim 10 , wherein the first command is an Electronics Engineers (IEEE) Media Independent Coordination (MIC) message, an IEEE 802.19x message, an IEEE 802.11x message, an IEEE 802.16x message, or an 802.22x message. 
     
     
         16 . The wireless communications system of  claim 10 , further comprising:
 the network node processor is configured to determine a start time for the quiet period based on a radio characteristic of a radio access network on which the WTRU is operating, wherein the command is based on the start time for the quiet period.   
     
     
         17 . The wireless communications system of  claim 16 , wherein the radio characteristic is channel availability or channel loading. 
     
     
         18 . The wireless communications system of  claim 10 , wherein the WTRU is an unlicensed device.