Intelligent Mode Switching In Communication Networks

Abstract

Systems and methods for intelligently switching between communication modes. An optimum communication mode is selected based upon determining the mobility of the subscriber station, the location of the subscriber station, and orthogonality of signals received from the subscriber station with respect to a signal of another subscriber station. Each determination may be continually or incrementally performed according to the passage of a time interval or upon observation of changes in relevant conditions.

1 . A base station comprising:
 one or more processors determining the mobility of a subscriber station, determining the position of said subscriber station, and determining either spatial orthogonality of the signal of said subscriber station with respect to at least another subscriber station signal or whether a Line of Sight (LOS) condition is associated with said subscriber station, wherein at least one of said one or more processors determines whether said subscriber station is static or dynamic and determines whether said subscriber station is closer to a cell boundary or closer to said base station; and   an antenna communication scheme based upon said determined mobility, said determined position, and one of said determination of said spatial orthogonality of the signal and said determination of said LOS condition.   
     
     
         2 . The base station of  claim 1 , wherein said at least one of said one or more processors determines whether said subscriber station is a member of a pair of orthogonal subscriber stations. 
     
     
         3 . The base station of  claim 1 , wherein said at least one of said one or more processors determines whether more than one antenna is associated with said subscriber station. 
     
     
         4 . The base station of  claim 1 , further comprising:
 logic for selecting Multiple-Input Multiple-Output (MIMO) for a communication mode if said LOS condition is determined not to be associated with said subscriber station.   
     
     
         5 . The base station of  claim 1 , further comprising:
 logic for selecting Space Division Multiple Access (SDMA) for a communication mode if said LOS condition is determined to be associated with said subscriber station.   
     
     
         6 . The base station of  claim 1 , further comprising:
 logic to select Maximum Ratio Combining (MRC) for a communication mode if said subscriber station is determined to be dynamic.   
     
     
         7 . The base station of  claim 1 , further comprising:
 logic to select Space Time Block Code (STBC) for a communication mode if said subscriber station is determined to be dynamic.   
     
     
         8 . The base station of  claim 1 , further comprising:
 logic to select Multiple-Input Multiple-Output (MIMO) for a communication mode if said subscriber station is determined to be dynamic.   
     
     
         9 . The base station of  claim 1 , further comprising:
 logic to select Maximum Ratio Combining (MRC) for a communication mode if said subscriber station is determined to be closer to said cell boundary.   
     
     
         10 . The base station of  claim 1 , further comprising:
 logic to select Beam Forming (BF) for a communication mode if said subscriber station is determined to be closer to said cell boundary.   
     
     
         11 . A system including a subscriber station, said system comprising:
 one or more processors determining the mobility of said subscriber station, determining the position of said subscriber station, and determining either spatial orthogonality of the signal of said subscriber station with respect to at least another subscriber station signal or whether a Line of Sight (LOS) condition is associated with said subscriber station and selecting a multiple antenna communication is further based upon one of said determination of said spatial orthogonality of the signal and said determination of said LOS condition, wherein at least one of said one or more processors determines whether said subscriber station is static or dynamic and determines whether said subscriber station is closer to a cell boundary or closer to said subscriber station.   
     
     
         12 . The system of  claim 11 , wherein said at least one of said one or more processors determines whether said subscriber station is a member of a pair of orthogonal subscriber stations. 
     
     
         13 . The system of  claim 11 , wherein said at least one of said one or more processors determines whether more than one antenna is associated with said subscriber station. 
     
     
         14 . The system of  claim 11 , further comprising:
 logic for selecting Multiple-Input Multiple-Output (MIMO) for a communication mode if said LOS condition is determined not to be associated with said subscriber station.   
     
     
         15 . The system of  claim 11 , further comprising:
 logic for selecting Space Division Multiple Access (SDMA) for a communication mode if said LOS condition is determined to be associated with said subscriber station.   
     
     
         16 . The system of  claim 11 , further comprising:
 logic to select Maximum Ratio Combining (MRC) for a communication mode if said subscriber station is determined to be dynamic.   
     
     
         17 . The system of  claim 11 , further comprising:
 logic to select Space Time Block Code (STBC) for a communication mode if said subscriber station is determined to be dynamic.   
     
     
         18 . The system of  claim 11 , further comprising:
 logic to select Multiple-Input Multiple-Output (MIMO) for a communication mode if said subscriber station is determined to be dynamic.   
     
     
         19 . The system of  claim 11 , further comprising:
 logic to select Maximum Ratio Combining (MRC) for a communication mode if said subscriber station is determined to be closer to said cell boundary.   
     
     
         20 . The system of  claim 11 , further comprising:
 logic to select Beam Forming (BF) for a communication mode if said subscriber station is determined to be closer to said cell boundary.