Control channel signaling using a common signaling field for transport format, redundancy version, and new data indicator

Abstract

A radio terminal in a radio communication system receives a physical downlink control signal comprising a control field and a new data indicator (NDI) field and determines that a value of the NDI field is one of a first value and a second value. A physical uplink shared channel signal is generated according to both a specific transport format and a specific redundancy version. The control field is used to determine the specific transport format when the NDI field is determined to be the first value, and the control field is used to determine the specific redundancy version when the NDI field is determined to be the second value.

1 . (canceled) 
     
     
         2 . A wireless terminal for use in a wireless communication system, the wireless terminal comprising:
 a receiver for receiving a physical downlink control channel signal, and   a transmitter for physical uplink shared channel transmission,   wherein the physical downlink control channel signal is associated to the physical uplink shared channel transmission and includes a single control information field having a number of bits jointly encoding a first transmission parameter and a second transmission parameter used for the physical uplink shared channel transmission,   wherein the number of bits in the single control information field represents one value out of a range of values, and   wherein a first subset of the range of values is reserved for indicating the first transmission parameter for the physical uplink shared channel transmission and a second subset of the range of values is reserved for indicating the second transmission parameter for the physical uplink shared channel transmission, and   wherein in case of the single control information field representing the first subset of the range of values, the second transmission parameter to be used for an initial transmission is a fixed or a preconfigured value.   
     
     
         3 . The wireless terminal according to  claim 2 , wherein the first subset of the range of values contains more values than the second subset of the range of values. 
     
     
         4 . The wireless terminal according to  claim 2 , wherein the value of the fixed or preconfigured second transmission parameter is 0. 
     
     
         5 . The wireless terminal according to  claim 2 , wherein in case of the single control information field representing the second subset of the range of values, the first transmission parameter to be used for retransmission is the same first transmission parameter for an initial transmission. 
     
     
         6 . The wireless terminal according to  claim 2 , wherein the first transmission parameter includes an index for determining an actual value of the first transmission parameter. 
     
     
         7 . The wireless terminal according to  claim 2 , wherein a number of values in the second subset of the range of values is 3. 
     
     
         8 . The wireless terminal according to  claim 2 , wherein the wireless terminal is a user equipment. 
     
     
         9 . The wireless terminal according to  claim 2 , wherein the first transmission parameter is transport block size, and the second transmission parameter is a redundancy version used for the physical uplink shared channel transmission. 
     
     
         10 . A method performed by a wireless terminal in a wireless communication system, the method comprising:
 receiving a physical downlink control channel signal, and   transmitting a physical uplink shared channel signal,   wherein the physical downlink control channel signal is associated to the physical uplink shared channel signal and includes a single control information field having a number of bits jointly encoding a first transmission parameter and a second transmission parameter used for the physical uplink shared channel signal,   wherein the number of bits of the single control information field represent one value out of a range of values, and   wherein a first subset of the range of values is reserved for indicating the first transmission parameter for the physical uplink shared channel signal and a second subset of the range of values is reserved for indicating the second transmission parameter for the physical uplink shared channel signal, and   wherein in case of the single control information field representing the first subset of the range of values, the second transmission parameter to be used for an initial transmission is a fixed or a preconfigured value.   
     
     
         11 . The method according to  claim 10 , wherein the first subset of the range of values contains more values than the second subset of the range of values. 
     
     
         12 . The method according to  claim 10 , wherein the value of the fixed or preconfigured second transmission parameter is 0. 
     
     
         13 . The method according to  claim 10 , wherein in case of the single control information field representing the second subset of the range of values, the first transmission parameter to be used for retransmission is the same first transmission parameter for an initial transmission. 
     
     
         14 . The method according to  claim 10 , wherein the first transmission parameter includes an index for determining an actual value of the first transmission parameter. 
     
     
         15 . The method according to  claim 10 , wherein a number of values in the second subset of the range of values is 3. 
     
     
         16 . The method according to  claim 10 , wherein the first transmission parameter is transport block size, and the second transmission parameter is a redundancy version used for the physical uplink shared channel signal. 
     
     
         17 . A non-transitory, computer-readable storage medium storing instructions, which when executed by one or more processors, causes a wireless terminal to perform the following steps:
 receiving a physical downlink control channel signal, and   transmitting a physical uplink shared channel signal,   wherein the physical downlink control channel signal is associated to the physical uplink shared channel signal and includes a single control information field having a number of bits jointly encoding a first transmission parameter and a second transmission parameter used for the physical uplink shared channel signal,   wherein the number of bits of the single control information field represent one value out of a range of values, and   wherein a first subset of the range of values is reserved for indicating the first transmission parameter for the physical uplink shared channel signal and a second subset of the range of values is reserved for indicating the second transmission parameter for the physical uplink shared channel signal, and   wherein in case of the single control information field representing the first subset of the range of values, the second transmission parameter to be used for an initial transmission is a fixed or a preconfigured value.   
     
     
         18 . The non-transitory, computer-readable storage medium in  claim 17 , wherein the first subset of the range of values contains more values than the second subset of the range of values. 
     
     
         19 . The non-transitory, computer-readable storage medium in  claim 17 , wherein the value of the fixed or preconfigured second transmission parameter is 0. 
     
     
         20 . The non-transitory, computer-readable storage medium in  claim 17 , wherein in case of the single control information field representing the second subset of the range of values, the first transmission parameter to be used for retransmission is the same first transmission parameter for an initial transmission. 
     
     
         21 . The non-transitory, computer-readable storage medium in  claim 17 , wherein the first transmission parameter includes an index for determining an actual value of the first transmission parameter.