Radio communication device, radio communication system, and radio communication method

Abstract

A radio communication device includes: a communication circuit configured to transmit and receive a signal to and from other radio communication device; and a control circuit configured to cause the communication circuit to transmit, through a control channel in a first layer, first acknowledgement information to the other radio communication device, the first acknowledgement information indicating whether data in a second layer different from the first layer is normally received from the other radio communication device.

What is claimed is: 
     
         1 . A radio communication device comprising:
 a communicator configured to transmit and receive to and from another radio communication device a signal in a first layer and data of a second layer which is an upper layer of the first layer, the data of the second layer is transmission control protocol (TCP) data; and   a controller configured to cause the communicator to transmit, through a first control channel of the first layer, first delivery confirmation information to the other radio communication device, the first delivery confirmation information indicating whether the radio communication device correctly receives the data in the second layer from the other radio communication device,   wherein the first delivery confirmation information is TCP acknowledgement (ACK) or TCP negative acknowledgement (NACK) for the TCP data, and the first control channel of the first layer is a physical uplink control channel (PUCCH).   
     
     
         2 . The radio communication device according to  claim 1 ,
 wherein the communicator receives a first signal in the first layer and transmit a second signal in the first layer, the first signal being configured to include the data of the second layer, the second signal being configured to include the first delivery confirmation information for the data of the second layer.   
     
     
         3 . The radio communication device ( 200 ) according to  claim 1 ,
 wherein the communicator transmits to the other radio communication device through the first control channel, second delivery confirmation information for the signal in the first layer and the first delivery confirmation information for the data of the second layer.   
     
     
         4 . The radio communication device according to  claim 3 ,
 wherein the second delivery confirmation information for the signal of the first layer is HARQ acknowledgement (ACK), or HARQ negative acknowledgement (NACK) for a signal in a medium access control (MAC) layer.   
     
     
         5 . The radio communication device according to  claim 1 ,
 wherein the controller is configured to, when the radio communication device ( 200 ) receives control information from the other radio communication device ( 100 ) using a second control channel of the first layer, causes to the communicator to transmit the delivery confirmation information using a first radio resource included in the first control channel, wherein the first radio resource is determined by the other radio communication device based on indexes indicating components included in the second control channel allocated to the radio communication device.   
     
     
         6 . The radio communication device according to  claim 5 ,
 wherein the first radio resource is determined based on a smallest index among the indexes indicating the components of the second control channel.   
     
     
         7 . The radio communication device according to  claim 5 ,
 wherein the second control channel is a physical downlink control channel (PDCCH), and each of the components in the second control channel is a control channel element (CCE) included in the PDCCH, and each of the indexes is a CCE index.   
     
     
         8 . The radio communication device according to  claim 1 ,
 wherein the communicator configured to transmit the first delivery confirmation information using a PUCCH format configured to support 32 component carrier (CC).   
     
     
         9 . The radio communication device according to  claim 1 , wherein the communicator is configured to transmit the first delivery confirmation information using a PUCCH format configured to transmit a number of bits greater than a case of transmission executed using PUCCH format 3. 
     
     
         10 . The radio communication device according to  claim 1 ,
 wherein the controller inserts information indicating the first delivery confirmation information for the TCP data into a first region of a TCP header and to determine from the information whether a TCP packet processed in a MAC layer of the radio communication device is the first delivery confirmation information for the TCP data or another data other than the first delivery confirmation information.   
     
     
         11 . The radio communication device according to  claim 10 ,
 wherein the first region is an acknowledgement number region of the TCP header.   
     
     
         12 . The radio communication device according to  claim 1 ,
 wherein the controller determines, based on a data amount of the TCP data, whether a TCP packet processed in a MAC layer of the radio communication device is the first delivery confirmation information for the TCP data or another data other than the first delivery confirmation information.   
     
     
         13 . The radio communication device according to  claim 1 ,
 wherein the radio communication device is a mobile station device and the other radio communication device is a base station device.   
     
     
         14 . A radio communication system comprising:
 a first radio communication device; and   a second radio communication device,   wherein f the second radio communication devices ( 200 ) is further configured to:
 transmit and receive to and from the first radio communication device a signal in a first layer and data of a second layer which is an upper layer of the first layer, the data of the second layer is transmission control protocol (TCP) data, and 
 transmit through a control channel of the first layer, first delivery confirmation information to the first radio communication device, the first delivery confirmation information indicating whether the at least one of the second radio communication devices correctly receives the data of the second layer from the first radio communication device, and 
   wherein the first radio communication device ( 100 ) is further configured to   receive, through the control channel of the first layer, the first delivery confirmation information from the at least one of the second radio communication devices ( 200 ),   wherein the first delivery confirmation information is TCP acknowledgement (ACK) or TCP negative acknowledgement (NACK) for TCP data, and the control channel of the first layer is a physical uplink control channel (PUCCH).   
     
     
         15 . A radio communication device comprising:
 a transmitter configured to transmit to another radio communication device a signal in a first layer and data of a second layer which is an upper layer of the first layer, the data of the second layer is transmission control protocol (TCP) data; and   a receiver configured to receive, through a first control channel of the first layer, first delivery confirmation information to the other radio communication device, the first delivery confirmation information indicating whether the radio communication device correctly receives the data in the second layer from the other radio communication device,   wherein the first delivery confirmation information is TCP acknowledgement (ACK) or TCP negative acknowledgement (NACK) for the TCP data, and the first control channel of the first layer is a physical uplink control channel (PUCCH)   
     
     
         16 . The radio communication device according to  claim 15 ,
 wherein the transmitter transmits a first signal in the first layer and transmit a second signal in the first layer, the first signal being configured to include the data of the second layer, the second signal being configured to include the first delivery confirmation information for the data of the second layer.   
     
     
         17 . The radio communication device according to  claim 1 ,
 wherein the receiver receive from the other radio communication device through the first control channel, second delivery confirmation information for the signal in the first layer and the first delivery confirmation information for the data of the second layer.   
     
     
         18 . The radio communication device according to  claim 17 ,
 wherein the second delivery confirmation information for the signal of the first layer is HARQ acknowledgement (ACK), or HARQ negative acknowledgement (NACK) for a signal in a medium access control (MAC).