Broadcast Multicast Mode

Abstract

A broadcast/multicast transmission format includes a data portion and a cyclic prefix (CP) coupled to the traffic data portion. A method and system for providing broadcast/multicast transmissions with the application to communication systems that perform broadcast or multicast transmission is also disclosed. The addition of a pilot to the data portion of the transmissions is also disclosed.

1 - 32 . (canceled) 
     
     
         33 . A method, comprising:
 receiving a broadcast/multicast transmission;   extracting data fields from the received transmission;   extracting a pilot signal from the data fields;   performing channel estimation using the extracted pilot signal; and   removing any cyclic prefix (CP) associated with the data fields.   
     
     
         34 . A method as defined in  claim 33 , wherein the data fields each comprise a cyclic prefix appended to a data portion. 
     
     
         35 . A method as defined in  claim 33 , wherein the data fields each comprise a cyclic prefix pre-pended to a data portion. 
     
     
         36 . A method as defined in  claim 34 , wherein the data fields each comprise a cyclic prefix pre-pended to the data portion. 
     
     
         37 . A method as defined in  claim 33 , wherein the data Melds each comprise a pilot symbol appended to a data portion. 
     
     
         38 . A method as defined in  claim 33 , wherein the data fields each comprise a cyclic prefix pre-pended to a data portion. 
     
     
         39 . A method as defined in  claim 34 , wherein the data fields each comprise a cyclic prefix pre-pended to the data portion. 
     
     
         40 . A method as defined in  claim 33 , wherein the data fields in the received broadcast/multicast transmission were not transmitted using cell/sector specific long code spreading. 
     
     
         41 . A method as defined in  claim 33 , wherein the data fields in the received broadcast/multicast transmission were transmitted using content-dependent long code spreading. 
     
     
         42 . An apparatus, comprising:
 means for receiving a broadcast/multicast transmission;   means for extracting data fields from the received transmission;   means for extracting a pilot signal from the data fields;   means for performing channel estimation using the extracted pilot signal; and   means for removing any cyclic prefix (CP) associated with the data fields.   
     
     
         43 . An apparatus, comprising:
 circuitry configured to receive a broadcast/multicast transmission;   circuitry configured to extract data fields from the received transmission;   circuitry configured to extract a pilot signal from the data fields;   circuitry configured to perform channel estimation using the extracted pilot signal; and   circuitry configured to remove any cyclic prefix (CP) associated with the data fields.   
     
     
         44 . The apparatus of  claim 43 , wherein the data fields each comprise a cyclic prefix appended to a data portion. 
     
     
         45 . The apparatus of  claim 43 , wherein the data fields each comprise a cyclic prefix prepended to a data portion. 
     
     
         46 . The apparatus of  44 , wherein the data fields each comprise a cyclic prefix pre-pended to the data portion. 
     
     
         47 . The apparatus of  claim 43 , wherein the data fields each comprise a pilot symbol appended to a data portion. 
     
     
         48 . The apparatus of  claim 43 , wherein the data fields each comprise a cyclic prefix pre-pended to a data portion. 
     
     
         49 . The apparatus of  claim 43 , wherein the data fields each comprise a cyclic prefix pre-pended to the data portion. 
     
     
         50 . The apparatus of  claim 43 , wherein the data fields in the received broadcast/multicast transmission were not transmitted using cell/sector specific long code spreading. 
     
     
         51 . The apparatus of  claim 43 , wherein the data fields in the received broadcast/multicast transmission were transmitted using content-dependent long code spreading. 
     
     
         52 . The apparatus of  claim 43  wherein code division multiple access (CDMA) is used to implement a non-data portion of the received broadcast/multicast transmission and orthogonal frequency division access (OFDM) is used to implement a data portion of the received broadcast/multicast transmission.