Midamble operation in a wireless local area network

Abstract

A method is described for generating and transmitting a frame by a station. The method includes generating a frame that includes a signaling field and a data field, wherein the signaling field includes a midamble indication that indicates a midamble periodicity used in the data field of the frame and wirelessly transmitting the frame to a recipient.

1 . A method performed by a station operating in a wireless network, the method comprising:
 generating a frame that includes a signaling field and a data field, wherein the signaling field includes a midamble indication that indicates a midamble periodicity used in the data field of the frame; and   wirelessly transmitting the frame to a recipient.   
     
     
         2 . The method of  claim 1 , wherein when the midamble indication has a first value a midamble is inserted in the data field of the frame after four orthogonal frequency-division multiplexing (OFDM) symbols. 
     
     
         3 . The method of  claim 2 , wherein when the midamble indication has a second value a midamble is inserted in the data field of the frame after eight OFDM symbols. 
     
     
         4 . The method of  claim 3 , wherein when the midamble indication has a third value a midamble is inserted in the data field of the frame after sixteen OFDM symbols. 
     
     
         5 . The method of  claim 1 , wherein the signaling field further includes a midamble size indication that indicates a midamble size used in the data field of the frame. 
     
     
         6 . The method of  claim 5 , wherein when the midamble size indication has a first value an uncompressed midamble is used in the data field of the frame. 
     
     
         7 . The method of  claim 6 , wherein when the midamble size indication has a second value a 2× compressed midamble is used in the data field of the frame. 
     
     
         8 . The method of  claim 7 , wherein when the midamble size indication has a third value a 1× compressed midamble is used in the data field of the frame. 
     
     
         9 . The method of  claim 5 , wherein the midamble size indication is also used to indicate whether a long training field of the frame is compressed or uncompressed. 
     
     
         10 . A station configured to operate in a wireless network, the station comprising:
 a memory device storing a set of instructions; and   a processor coupled to the memory device, wherein the set of instructions when executed by the processor cause the station to:
 generate a frame that includes a signaling field and a data field, wherein the signaling field includes a midamble indication that indicates a midamble periodicity used in the data field of the frame and 
 wirelessly transmit the frame to a recipient. 
   
     
     
         11 . The station of  claim 10 , wherein when the midamble indication has a first value a midamble is inserted in the data field of the frame after four orthogonal frequency-division multiplexing (OFDM) symbols. 
     
     
         12 . The station of  claim 11 , wherein when the midamble indication has a second value a midamble is inserted in the data field of the frame after eight OFDM symbols. 
     
     
         13 . The station of  claim 12 , wherein when the midamble indication has a third value a midamble is inserted in the data field of the frame after sixteen OFDM symbols. 
     
     
         13 . A non-transitory machine readable medium that stores instructions, which when executed by a processor of a station, cause the station to:
 generate a frame that includes a signaling field and a data field, wherein the signaling field includes a midamble indication that indicates a midamble periodicity used in the data field of the frame; and   wirelessly transmit the frame to a recipient.   
     
     
         14 . The non-transitory machine readable medium of  claim 13 , wherein when the midamble indication has a first value a midamble is inserted in the data field of the frame after four orthogonal frequency-division multiplexing (OFDM) symbols. 
     
     
         15 . The non-transitory machine readable medium of  claim 14 , wherein when the midamble indication has a second value a midamble is inserted in the data field of the frame after eight OFDM symbols. 
     
     
         16 . The non-transitory machine readable medium of  claim 15 , wherein when the midamble indication has a third value a midamble is inserted in the data field of the frame after sixteen OFDM symbols. 
     
     
         17 . The non-transitory machine readable medium of  claim 13 , wherein the signaling field further includes a midamble size indication that indicates a midamble size used in the data field of the frame. 
     
     
         18 . The non-transitory machine readable medium of  claim 17 , wherein when the midamble size indication has a first value an uncompressed midamble is used in the data field of the frame. 
     
     
         19 . The non-transitory machine readable medium of  claim 18 , wherein when the midamble size indication has a second value a 2× compressed midamble is used in the data field of the frame. 
     
     
         20 . The non-transitory machine readable medium of  claim 17 , wherein the midamble size indication is also used to indicate whether a long training field of the frame is compressed or uncompressed.