Methods and arrangements to mitigate collisions in wireless networks

Abstract

Logic for collision mitigation between transmissions of wireless transmitters and receivers operating at different bandwidths. Logic of the receivers may be capable of receiving and detecting signals transmitted at narrower bandwidths. In several embodiments, the receivers comprise a clear channel assessment logic that implements a guard interval (or cyclic prefix) detector to detect transmissions at narrower bandwidths. For instance, a two MegaHertz (MHz) bandwidth receiver may implement a guard interval detector to detect 1 MHz bandwidth signals and a 16 MHz bandwidth receiver may implement logic to detect one or more 1 MHz bandwidth signals and any other combination of, e.g., 1, 2, 4, 8 MHz bandwidth signals. In many embodiments, the guard interval detector may be implemented to detect guard intervals on a channel designated as a primary channel as well as on one or more non-primary channels.

1 . (canceled) 
     
     
         2 . A wireless station (STA) comprising hardware processing circuitry including physical layer (PHY) circuitry and medium access control layer (MAC) circuitry, the hardware processing circuitry to:
 initiate communication in a basic service set (BSS), the BSS to support signaling with frequencies of less than 1 GHz, and   send a transmission including information to indicate parameters for operation at frequencies of less than 1 GHz in the BSS.   
     
     
         3 . The STA of  claim 2 , wherein the PHY circuitry is further to
 set a bandwidth to be used by the STA while operating in the BSS set; and   transmit a physical layer protocol data unit (PPDU) at the bandwidth.   
     
     
         4 . The STA of  claim 3 , wherein the PHY circuitry sets the operating bandwidth to 1 MHz. 
     
     
         5 . The STA of  claim 3 , wherein the PHY circuitry sets the operating bandwidth to at least 2 MHz. 
     
     
         6 . The STA of  claim 2 , wherein the information includes a channel width of the BSS. 
     
     
         7 . The STA of  claim 6 , wherein the information further includes information indicating whether a primary channel of the channel is positioned in an upper side or a lower side of the channel. 
     
     
         8 . The STA of  claim 7 , wherein the primary channel has a bandwidth of 1 MHz. 
     
     
         9 . A system comprising:
 a transceiver; and   processing circuitry to
 initiate communication in a basic service set (BSS), the BSS to support signaling using frequencies of less than 1 GHz; and 
 send a transmission including information to indicate parameters for operating at frequencies of less than 1 GHz in the BSS. 
   
     
     
         10 . The system of  claim 9 , wherein
 the processing circuitry is further capable to initialize a TXVECTOR parameter to set a bandwidth to be used by the system while operating in the BSS, and   the transceiver is to
 be coupled to two or more antennas, and 
 transmit a physical layer protocol data unit (PPDU) at the bandwidth indicated by the TXVECTOR parameter. 
   
     
     
         11 . The system of  claim 10 , wherein the processing circuitry sets the operating bandwidth to 1 MHz. 
     
     
         12 . The system of  claim 10 , wherein the processing circuitry sets the operating bandwidth to at least 2 MHz. 
     
     
         13 . The system of  claim 10 , wherein the information includes a channel width of the BSS. 
     
     
         14 . The system of  claim 13 , wherein the information further includes information indicating whether a primary channel of the channel is positioned in an upper side or a lower side of the channel. 
     
     
         15 . The system of  claim 14 , wherein the primary channel has a bandwidth of 1 MHz. 
     
     
         16 . A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors to perform operations for operating a communication station (STA) in a wireless network, the operations to configure the STA to:
 initiate communication in a basic service set (BSS), the BSS to support signaling using frequencies of less than 1 GHz, and   send a transmission including information to indicate parameters for operating at frequencies of less than 1 GHz in the BSS.   
     
     
         17 . The non-transitory computer-readable storage medium of  claim 16 , wherein the instructions further configure the STA to:
 initialize a TXVECTOR parameter to set a bandwidth to be used by the STA while operating in the BSS set; and   transmit a physical layer protocol data unit (PPDU) at the bandwidth indicated by the TXVECTOR parameter.   
     
     
         18 . The non-transitory computer-readable storage medium of  claim 17 , wherein the instructions further configure the STA to set the operating bandwidth to 1 MHz. 
     
     
         19 . The non-transitory computer-readable storage medium of  claim 17 , wherein the instructions further configure the STA to set the operating bandwidth to at least 2 MHz. 
     
     
         20 . The non-transitory computer-readable storage medium of  claim 16 , wherein the information includes a channel width of the BSS. 
     
     
         21 . The non-transitory computer-readable storage medium of  claim 20 , wherein the information further includes information indicating whether a primary channel of the channel is positioned in an upper side or a lower side of the channel. 
     
     
         22 . The non-transitory computer-readable storage medium of  claim 21 , wherein the primary channel has a bandwidth of 1 MHz.