US2019273585A1PendingUtilityA1

Methods and Systems for Asynchronous Time Division Duplex by Radio Base Station

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Assignee: PHAZR INCPriority: Nov 13, 2017Filed: May 17, 2019Published: Sep 5, 2019
Est. expiryNov 13, 2037(~11.3 yrs left)· nominal 20-yr term from priority
Inventors:Farooq Khan
H04W 72/0446H04L 5/1469H04L 5/0032H04B 7/2615H04L 5/0048H04L 5/001H04L 5/0007H04L 5/0051H04L 5/143
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Claims

Abstract

A method of wireless communication using time division duplex by a radio base station includes transmitting millimeter wave band downlink signals comprising a plurality of transmission time intervals (TTIs) and receiving millimeter wave band uplink signals comprising at least one TTI, wherein the number of TTIs in the millimeter wave band downlink signals is greater than the number of TTIs in the millimeter wave band uplink signals, and wherein control information associated with the millimeter wave band downlink signals and the millimeter wave band uplink signals is transmitted over the millimeter wave band. The method further includes transmitting sub-7 GHz band downlink signals comprising at least one TTI and receiving sub-7 GHz band uplink signals comprising a plurality of TTIs, wherein the number of TTIs in the sub-7 GHz band downlink signals is less than the number of TTIs in the sub-7 GHz band uplink signals.

Claims

exact text as granted — not AI-modified
1 . A method of wireless communication using time division duplex over widely spaced frequency bands by a radio base station, comprising:
 transmitting millimeter wave band downlink signals comprising a plurality of transmission time intervals (TTIs);   receiving millimeter wave band uplink signals comprising at least one TTI;   wherein the radio base station transmits the millimeter wave band downlink signals and receives the millimeter wave band uplink signals using asymmetric time division duplex, and wherein the number of TTIs in the millimeter wave band downlink signals is greater than the number of TTIs in the millimeter wave band uplink signals, and wherein control information associated with the millimeter wave band downlink signals and the millimeter wave band uplink signals is transmitted over the millimeter wave band;   transmitting sub-7 GHz band downlink signals comprising at least one TTI;   receiving sub-7 GHz band uplink signals comprising a plurality of TTIs;   wherein the radio base station transmits sub-7 GHz wave band downlink signals and receives sub-7 GHz band uplink signals using asymmetric time division duplex, and wherein the number of TTIs in the sub-7 GHz band downlink signals is less than the number of TTIs in the sub-7 GHz band uplink signals.   
     
     
         2 . The method of  claim 1 , further comprising switching from transmitting the millimeter wave band downlink signals to receiving the millimeter wave band uplink signals during a first switching time interval. 
     
     
         3 . The method of  claim 1 , further comprising switching from transmitting the sub-7 GHz band downlink signals to receiving the sub-7 GHz band uplink signals during a second switching time interval. 
     
     
         4 . The method of  claim 1 , wherein the bandwidth of the millimeter wave band signals is greater than the bandwidth of the sub-7 GHz band signals. 
     
     
         5 . The method of  claim 1 , wherein the sub-carrier spacing of the millimeter wave band signals is greater than the sub-carrier spacing of the sub-7 GHz band signals. 
     
     
         6 . The method of  claim 1 , wherein the bandwidth of the millimeter wave band signals is between 100-400 MHz. 
     
     
         7 . The method of  claim 1 , wherein the bandwidth of the sub-7 GHz band signals is 100 MHz or less. 
     
     
         8 . The method of  claim 1 , wherein the sub-carrier spacing of the millimeter wave band signals is between 120 KHz-480 KHz. 
     
     
         9 . The method of  claim 1 , wherein the sub-carrier spacing of the sub-7 GHz signals is between 15 KHz-60 KHz. 
     
     
         10 . The method of  claim 1 , wherein the first and second switching time intervals are concurrent. 
     
     
         11 . The method of  claim 1 , wherein the first and second switching time intervals are non-concurrent. 
     
     
         12 . The method of  claim 1 , further comprising transmitting the millimeter wave band downlink signals to a communication device. 
     
     
         13 . The method of  claim 1 , further comprising receiving the millimeter wave band uplink signals from a communication device. 
     
     
         14 . The method of  claim 1 , further comprising transmitting the sub-7 GHz band downlink signals to a communication device. 
     
     
         15 . The method of  claim 1 , further comprising receiving the sub-7 GHz band uplink signals from a communication device. 
     
     
         16 . A method of wireless communication using time division duplex over widely spaced frequency bands by a radio base station, comprising:
 transmitting millimeter wave band downlink signals comprising a plurality of transmission time intervals (TTIs), wherein control information associated with the millimeter wave band downlink signals is transmitted over the millimeter wave band;   transmitting sub-7 GHz band downlink signals comprising at least one TTI;   receiving sub-7 GHz band uplink signals comprising a plurality of TTIs;   wherein the radio base station transmits sub-7 GHz wave band downlink signals and receives sub-7 GHz band uplink signals using asymmetric time division duplex, and wherein the number of TTIs in the sub-7 GHz band downlinks signals is less than the number of TTIs in the sub-7 GHz band uplink signals.   
     
     
         17 . The method of  claim 16 , further comprising switching from transmitting the sub-7 GHz band downlink signals to receiving the sub-7 GHz band uplink signals during a switching time interval. 
     
     
         18 . The method of  claim 16 , wherein the bandwidth of the millimeter wave band signals is greater than the bandwidth of the sub-7 GHz band signals. 
     
     
         19 . The method of  claim 16 , wherein the sub-carrier spacing of the millimeter wave band signals is greater than the sub-carrier spacing of the sub-7 GHz band signals. 
     
     
         20 . The method of  claim 16 , wherein the bandwidth of the millimeter wave band signals is between 100-400 MHz. 
     
     
         21 . The method of  claim 16 , wherein the bandwidth of the sub-7 GHz band signals is 100 MHz or less. 
     
     
         22 . The method of  claim 16 , wherein the sub-carrier spacing of the millimeter wave band signals is between 120 KHz-480 KHz. 
     
     
         22 . The method of  claim 16 , wherein the sub-carrier spacing of the sub-7 GHz signals is between 15 KHz-60 KHz. 
     
     
         23 . The method of  claim 16 , further comprising transmitting the millimeter wave band downlink signals to a communication device. 
     
     
         24 . The method of  claim 16 , further comprising transmitting the sub-7 GHz band downlink signals to a communication device. 
     
     
         25 . The method of  claim 20 , further comprising receiving the sub-7 GHz band uplink signals from a communication device. 
     
     
         26 . A method of wireless communication using time division duplex over widely spaced frequency bands by a radio base station, comprising:
 transmitting millimeter wave band downlink signals comprising a plurality of transmission time intervals (TTIs);   receiving millimeter wave band uplink signals comprising at least one TTI;   wherein the radio base station transmits the millimeter wave band downlink signals and receives the millimeter wave band uplink signals using asymmetric time division duplex, and wherein the number of TTIs in the millimeter wave band downlink signals is greater than the number of TTIs in the millimeter wave band uplink signals, and wherein control information associated with the millimeter wave band downlink signals and the millimeter wave band uplink signals is transmitted over the millimeter wave band;   transmitting sub-7 GHz band downlink signals comprising at least one TTI;   receiving sub-7 GHz band uplink signals comprising a plurality of TTIs;   wherein the radio base station transmits sub-7 GHz wave band downlink signals and receives sub-7 GHz band uplink signals using asymmetric time division duplex, and wherein the number of TTIs in the sub-7 GHz band downlinks signals is less than the number of TTIs in the sub-7 GHz band uplink signals, wherein the bandwidth of the millimeter wave band signals is greater than the bandwidth of the sub-7 GHz band signals, and wherein the sub-carrier spacing of the millimeter wave band signals is greater than the sub-carrier spacing of the sub-7 GHz band signals.   
     
     
         27 . The method of  claim 26 , further comprising switching from transmitting the millimeter wave band downlink signals to receiving the millimeter wave band uplink signals during a first switching time interval. 
     
     
         28 . The method of  claim 26 , further comprising switching from transmitting the sub-7 GHz band downlink signals to receiving the sub-7 GHz band uplink signals during a second switching time interval. 
     
     
         29 . The method of  claim 26 , wherein the bandwidth of the millimeter wave band signals is between 100-400 MHz. 
     
     
         30 . The method of  claim 26 , wherein the bandwidth of the sub-7 GHz band signals is 100 MHz or less. 
     
     
         31 . The method of  claim 26 , wherein the sub-carrier spacing of the millimeter wave band signals is between 120 KHz-480 KHz. 
     
     
         32 . The method of  claim 26 , wherein the sub-carrier spacing of the sub-7 GHz signals is between 15 KHz-60 KHz.

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