Symbol mapping method for repetition channel coding

Abstract

Repetition coding is performed on control channel information to generate a plurality of encoded control channel signals, which are then transmitted using time-frequency resource-element groups. The time-frequency resource-element groups include orthogonal frequency division multiplexing (OFDM) symbols in a time domain and frequency subcarriers in a frequency domain. The plurality of encoded control channel signals are transmitted separately from each other in the frequency domain when one of the OFDM symbols is used for transmitting the plurality of encoded control channel signals. At least two of the plurality of encoded control channel signals are transmitted using one or more resource-element groups and the at least two of the plurality of encoded control channel signals are transmitted separately from each other in the frequency domain when two of the OFDM symbols are used for transmitting.

1 . (canceled) 
     
     
         2 . A method for transmitting control channel information in a mobile communication system, the method comprising:
 performing repetition coding on control channel information and generating a plurality of encoded control channel signals; and   transmitting the plurality of encoded control channel signals using time-frequency resource-element groups,   wherein the time-frequency resource-element groups include orthogonal frequency division multiplexing (OFDM) symbols in a time domain and frequency subcarriers in a frequency domain,   wherein the plurality of encoded control channel signals are transmitted separately from each other in the frequency domain when one of the OFDM symbols is used for transmitting the plurality of encoded control channel signals, and   wherein at least two of the plurality of encoded control channel signals are transmitted using one or more resource-element groups and the at least two of the plurality of encoded control channel signals are transmitted separately from each other in the frequency domain when two of the OFDM symbols are used for transmitting.   
     
     
         3 . The method of  claim 2 , further comprising:
 performing interleaving on the control channel information prior to performing the repetition coding.   
     
     
         4 . The method of  claim 3 , further comprising generating symbols of interleaved control channel information by performing channel symbol modulation for the interleaved control channel information prior to performing the repetition coding. 
     
     
         5 . The method of  claim 3 , further comprising generating symbols of interleaved control channel information by performing channel symbol modulation for the interleaved control channel information after performing the repetition coding. 
     
     
         6 . The method of  claim 2 , further comprising:
 transmitting the at least two of the plurality of encoded control channel signals with a maximum interval from each other when the at least two of the plurality of encoded control channel signals are transmitted using a same resource block.   
     
     
         7 . The method of  claim 2 , wherein transmitting the plurality of encoded control channel signals comprises determining a start position of the plurality of encoded control channel signals within a localized resource block. 
     
     
         8 . The method of  claim 2 , wherein the plurality of encoded control channel signals are transmitted via a control channel. 
     
     
         9 . The method of  claim 2 , wherein the at least two of the plurality of encoded control channel signals are transmitted non-adjacently_from each other in the frequency domain within the same time duration when two of the plurality of OFDM symbols are used for transmitting. 
     
     
         10 . A radio station comprising a processor and memory, the memory including computer instructions that, when executed by the processor, cause the processor to:
 perform repetition coding on control channel information to generate a plurality of encoded control channel signals; and   transmit via a transmitter the plurality of encoded control channel signals using time-frequency resource-element groups,   wherein the time-frequency resource-element groups include orthogonal frequency division multiplexing (OFDM) symbols in a time domain and frequency subcarriers in a frequency domain,   wherein the plurality of encoded control channel signals are configured to be transmitted separately from each other in the frequency domain when one of the OFDM symbols is used for transmitting the plurality of encoded control channel signals, and   wherein at least two of the plurality of encoded control channel signals are configured to be transmitted using one or more resource-element groups and the at least two of the plurality of encoded control channel signals are transmitted separately from each other in the frequency domain when two of the OFDM symbols are used for transmitting.   
     
     
         11 . The radio station of  claim 10 , wherein the computer instructions, when executed by the processor, cause the processor to:
 perform interleaving on the control channel information prior to performing the repetition coding.   
     
     
         12 . The radio station of  claim 11 , wherein the computer instructions, when executed by the processor, cause the processor to:
 generate symbols of interleaved control channel information by performing channel symbol modulation for the interleaved control channel information prior to performing the repetition coding.   
     
     
         13 . The radio station of  claim 11 , wherein the computer instructions, when executed by the processor, cause the processor to:
 generate symbols of interleaved control channel information by performing channel symbol modulation for the interleaved control channel information after performing the repetition coding.   
     
     
         14 . The radio station of  claim 10 , wherein the computer instructions, when executed by the processor, cause the processor to:
 transmit via the transmitter the at least two of the plurality of encoded control channel signals with a maximum interval from each other when the at least two of the plurality of encoded control channel signals are transmitted using a same resource block.   
     
     
         15 . The radio station of  claim 10 , wherein the computer instructions, when executed by the processor, cause the processor to:
 determine a start position of the plurality of encoded control channel signals within a localized resource block.   
     
     
         16 . The radio station of  claim 10 , wherein transmission of the plurality of encoded control channel signals is via a control channel. 
     
     
         17 . The radio station of  claim 10 , wherein the computer instructions, when executed by the processor, cause the processor to:
 transmit via the transmitter the at least two of the plurality of encoded control channel signals non-adjacently from each other in the frequency domain within the same time duration when two of the plurality of OFDM symbols are used for transmitting.   
     
     
         18 . A base station comprising:
 circuitry configured to perform repetition coding on control channel information to generate a plurality of encoded control channel signals; and   a transmitter configured to transmit the plurality of encoded control channel signals using time-frequency resource-element groups,   wherein the time-frequency resource-element groups include orthogonal frequency division multiplexing (OFDM) symbols in a time domain and frequency subcarriers in a frequency domain, and   wherein the transmitter is configured to transmit:
 the plurality of encoded control channel signals separately from each other in the frequency domain when one of the OFDM symbols is used for transmitting the plurality of encoded control channel signals, and 
 at least two of the plurality of encoded control channel signals using one or more resource-element groups and the at least two of the plurality of encoded control channel signals are transmitted separately from each other in the frequency domain when two of the OFDM symbols are used for transmitting.