Full duplex communication system using disjoint spectral blocks

Abstract

The invention involves utilizing pieces of disjoint spectral blocks. In one embodiment, a frequency division duplex approach is used, where each spectral block is utilized solely for either uplink or downlink communications. In another embodiment, a time division duplex approach is used, where each spectral block is time divided and uplink and downlink communications are assigned to different time slots within the same spectral blocks. In another embodiment, a code division duplex approach is utilized, where uplink and downlink communications are assigned different codes/hopping patterns within a same spectral block.

What is claimed is: 
     
         1 . A base station comprising:
 at least one controller circuit configured to adaptively assign frequency bands for downlink communication to a wireless transmit/receive unit (WTRU) on a time interval basis, wherein for at least one time interval, the WTRU is assigned a plurality of frequency bands for downlink communication, wherein each time interval includes at least one time slot;   at least one spreading circuit configured to spread data using at least one code division communication code for each of the assigned plurality of frequency bands in the at least one time interval; and   at least one modulator circuit configured to modulate the spread data to each of the respective assigned plurality of frequency bands.   
     
     
         2 . The base station of  claim 1 , wherein at least two of the assigned plurality of frequency bands are in different Federal Communication Commission (FCC) spectral blocks. 
     
     
         3 . The base station of  claim 1 , wherein the at least one controller circuit is further configured to adaptively assign time intervals to uplink and downlink communication. 
     
     
         4 . The base station of  claim 1 , wherein a bandwidth of the assigned plurality of frequency bands is fixed. 
     
     
         5 . The base station of  claim 1 , wherein the assigned plurality of frequency bands comprise one or more non-contiguous frequency bands for downlink communication. 
     
     
         6 . The base station of  claim 1 , wherein the at least one controller circuit is further configured to use time division duplexing. 
     
     
         7 . A wireless transmit/receive unit (WTRU) comprising:
 at least one controller circuit configured to be adaptively assigned frequency bands by a base station for downlink communication on a time interval basis, wherein for at least one time interval, the controller is assigned a plurality of frequency bands for downlink communication, and wherein each time interval includes at least one time slot;   at least one demodulator circuit configured to demodulate spread data for each of the assigned plurality of frequency bands within the at least one time interval; and   at least one despreading circuit configured to despread data for each of the assigned plurality of frequency bands within the at least one time interval using at least one code division communication code.   
     
     
         8 . The WTRU of  claim 7 , wherein at least two of the assigned plurality of frequency bands are in different Federal Communication Commission (FCC) spectral blocks. 
     
     
         9 . The WTRU of  claim 7 , wherein a bandwidth of the assigned plurality of frequency bands is fixed. 
     
     
         10 . The WTRU of  claim 7 , wherein the assigned plurality of frequency bands comprise one or more non-contiguous frequency bands for downlink communication. 
     
     
         11 . A method comprising:
 receiving, by a wireless transmit/receive unit (WTRU), an assignment of frequency bands from base station for downlink communication adaptively and on a time interval basis, wherein for at least one time interval, the WTRU is assigned a plurality of frequency bands for downlink communication, and wherein each time interval includes at least one time slot;   demodulating, by the WTRU, spread data for each of the assigned plurality of frequency bands within the at least one time interval; and   dispreading, by the WTRU, data for each of the assigned plurality of frequency bands within the at least one time interval using at least one code division communication code.   
     
     
         12 . The method of  claim 11 , wherein at least two of the assigned plurality of frequency bands are in different Federal Communication Commission (FCC) spectral blocks. 
     
     
         13 . The method of  claim 11 , wherein a bandwidth of the assigned plurality of frequency bands is fixed. 
     
     
         14 . The method of  claim 11 , wherein the assigned plurality of frequency bands comprise one or more non-contiguous frequency bands for downlink communication.