LAA/WiFi Coexistence for 5GHz Antenna Sharing

Abstract

An apparatus such as a wireless communication device (UE) may include first circuitry configured to conduct wireless communications according to a first radio access technology (RAT) in a first frequency band and in a second frequency band, where the first RAT is a cellular RAT, the first frequency band is in an unlicensed spectrum, and the second frequency band is in a licensed spectrum. The apparatus may include second circuitry configured to conduct wireless communications according to a second RAT in the first frequency band, wherein the second RAT is a wireless local area network (WLAN) RAT. The apparatus may be configured to determine to perform a scan operation in the first frequency band using the first circuitry and, based on one or more transmissions by the second circuitry using the first frequency band, adjust one or more parameters for the scan measurement by the first circuitry. The cellular communications in the first frequency band may be LAA communications, for example.

1 . An apparatus, comprising:
 first circuitry configured to conduct wireless communications according to a first radio access technology (RAT) in a first frequency band and in a second frequency band, wherein the first RAT is a cellular RAT, the first frequency band is in an unlicensed spectrum, and the second frequency band is in a licensed spectrum;   second circuitry configured to conduct wireless communications according to a second RAT in the first frequency band, wherein the second RAT is a wireless local area network (WLAN) RAT; and   wherein the apparatus is configured to:
 determine to perform a scan operation in the first frequency band using the first circuitry; and 
 in response to one or more transmissions by the second circuitry using the first frequency band, adjust one or more parameters for the scan operation by the first circuitry. 
   
     
     
         2 . The apparatus of  claim 1 , wherein the apparatus is further configured to:
 based on a scan in the first frequency band by the first circuitry, determine whether to cancel or defer the one or more transmissions by the second circuitry.   
     
     
         3 . The apparatus of  claim 2 , wherein the apparatus is configured to adjust the one or more parameters for the scan operation in response to determining to allow the second circuitry to transmit using the first frequency band during the scan operation. 
     
     
         4 . The apparatus of  claim 1 , wherein, to adjust the one or more parameters for the scan operation by the first circuitry, the apparatus is configured to ignore at least a portion of data generated by the scan operation. 
     
     
         5 . The apparatus of  claim 1 , wherein to adjust the one or more parameters for the scan operation by the first circuitry, the apparatus is configured to adjust a scan interval. 
     
     
         6 . The apparatus of  claim 1 , wherein the first circuitry is configured to perform license-assisted access (LAA) cellular communications in the first frequency band and wherein the second RAT is a WiFi RAT. 
     
     
         7 . The apparatus of  claim 1 , wherein the first circuitry and the second circuitry are configured to communicate via a same antenna for communications in the first frequency band. 
     
     
         8 . The apparatus of  claim 7 , wherein the second circuitry is configured to indicate one or more transmission intervals by notifying the first circuitry, via one or more internal communication lines, when the second circuitry is transmitting via the antenna; and
 wherein the first circuitry is configured to determine whether to request, from a cellular network, deactivation of communications via the first frequency band based on one or more durations of the one or more transmission intervals.   
     
     
         9 . The apparatus of  claim 8 , wherein the first circuitry is configured to request deactivation of communications via the first frequency band by sending a channel quality indication (CQI) report to a cellular base station that has a CQI of zero for one or more secondary component carriers in the first frequency band. 
     
     
         10 . The apparatus of  claim 8 , wherein the first circuitry is configured to request deactivation of communications via the first frequency band by sending an in-device coexistence (IDC) message to a cellular base station. 
     
     
         11 . A method, comprising:
 conducting, by first circuitry of a mobile device, wireless communications according to a first radio access technology (RAT) in a first frequency band and in a second frequency band, wherein the first RAT is a cellular RAT, the first frequency band is in an unlicensed spectrum, and the second frequency band is in a licensed spectrum;   conducting, by second circuitry of the mobile device, wireless communications according to a second RAT in the first frequency band, wherein the second RAT is a wireless local area network (WLAN) RAT; and   determining, by the mobile device, to perform a scan operation in the first frequency band using the first circuitry; and   in response to one or more transmissions by the second circuitry using the first frequency band, the mobile device adjusting one or more parameters for the scan operation by the first circuitry.   
     
     
         12 . The method of  claim 11 , further comprising:
 based on a scan in the first frequency band by the first circuitry, the mobile device determining whether to cancel or defer the one or more transmissions by the second circuitry.   
     
     
         13 . The method of  claim 11 , wherein the adjusting the one or more parameters for the scan operation by the first circuitry includes ignoring at least a portion of data generated by the scan operation. 
     
     
         14 . The method of  claim 11 , wherein the communications by the first circuitry in the first frequency band are license-assisted access (LAA) cellular communications. 
     
     
         15 . The method of  claim 11 , wherein the communications by first circuitry and the second circuitry in the first frequency band use a same antenna of the mobile device. 
     
     
         16 . A non-transitory computer-readable medium having instructions stored thereon that are executable by a computing device to perform operations comprising:
 conducting, using first circuitry of the computing device, wireless communications according to a first radio access technology (RAT) in a first frequency band and in a second frequency band, wherein the first RAT is a cellular RAT, the first frequency band is in an unlicensed spectrum, and the second frequency band is in a licensed spectrum;   conducting, using second circuitry of the computing device, wireless communications according to a second RAT in the first frequency band, wherein the second RAT is a wireless local area network (WLAN) RAT; and   determining to perform a scan operation in the first frequency band using the first circuitry; and   in response to one or more transmissions by the second circuitry using the first frequency band, adjusting one or more parameters for the scan operation by the first circuitry.   
     
     
         17 . The non-transitory computer-readable medium of  claim 16 , wherein the operations further comprise:
 based on a scan in the first frequency band by the first circuitry, determining whether to cancel or defer the one or more transmissions by the second circuitry.   
     
     
         18 . The non-transitory computer-readable medium of  claim 16 , wherein the adjusting the one or more parameters for the scan operation by the first circuitry includes ignoring at least a portion of data generated by the scan operation. 
     
     
         19 . The non-transitory computer-readable medium of  claim 16 , wherein the communications by the first circuitry in the first frequency band are license-assisted access (LAA) cellular communications. 
     
     
         20 . The non-transitory computer-readable medium of  claim 16 , wherein the communications by first circuitry and the second circuitry in the first frequency band use a same antenna of the computing device.