Wireless communication device, method, and system for wireless connection using a packet including transmission number

1. A wireless communication device that transmits data to a second wireless communication device that performs wireless connection using a packet including a transmission number, the wireless communication device comprising:

a controller configured to classify the data as first data when a transmission condition indicating a condition related to transmission of the data is a first transmission condition and to classify the data as second data when the transmission condition of the data is a second transmission condition different from the first transmission condition in a PDCP (Packet Data Convergence Protocol) layer; and

a transmitter configured to:

select a logical channel to transmission of the data from multiple channels according to the classification in the PDCP layer; and

transmit the data using the logical channel,

wherein the transmitter is further configured to:

select, when the data is the first data, a first transmission mode in a first layer that manages a data link in the wireless connection, and a first logical channel of a first logical channel number as the logical channel, the first logical channel number corresponding to the first transmission mode; and

select, when the data is the second data, a second transmission mode in the first layer, and a second logical channel of a second logical channel number as the logical channel, the second logical channel number corresponding to the second transmission mode, and

wherein the first layer is a lower layer of the PDCP layer.

2. The wireless communication device according to claim 1 , wherein

the first transmission mode is a transmission mode in which the second wireless communication device is caused to execute processing corresponding to data included in a packet received in advance by the second wireless communication device when a packet of a transmission number successive to the received packet is received and the second wireless communication device is not caused to execute the processing corresponding to the data included in the packet received in advance by the second wireless communication device until the packet of the transmission number successive to the packet received in advance is received when a packet of a transmission number that is not successive to the packet received in advance by the second wireless communication device is received, and

the second transmission mode is a transmission mode in which the second wireless communication device is caused to execute the processing corresponding to the data included in the packet received in advance by the second wireless communication device when a packet of a transmission number that is successive to or not successive to the packet received in advance by the second wireless communication device.

3. The wireless communication device according to claim 2 , wherein

the processing corresponding to the data is processing of delivering the data to an application program which uses the data and is included in the second wireless communication device.

4. The wireless communication device according to claim 1 , wherein

the first transmission condition is an allowable latency indicating a latency allowed for transmitting the data, and

the second transmission condition is an allowable latency shorter than the first transmission condition.

5. The wireless communication device according to claim 1 , wherein

a transmission completion time taken until transmission of the packet in the second transmission mode is completed is shorter than a transmission completion time in the first transmission mode.

6. The wireless communication device according to claim 1 , wherein

the transmitter uses a first radio channel when transmitting the data in the first transmission mode and uses a second radio channel different from the first radio channel when transmitting the data in the second transmission mode.

7. The wireless communication device according to claim 1 , wherein

the first transmission mode is a transmission mode in which the second wireless communication device is requested to transmit an acknowledgement indicating that a packet has been received, and

the second transmission mode is a transmission mode in which the second wireless communication device is not requested to transmit the acknowledgement.

8. The wireless communication device according to claim 7 , wherein

the first transmission mode is an AM (Acknowledged Mode), and

the second transmission mode is a UM (Unacknowledged Mode).

9. The wireless communication device according to claim 8 , wherein

the second transmission mode is the UM or a TM (Transparent Mode).

10. The wireless communication device according to claim 1 , wherein

the layer related to the wireless connection is a RLC (Radio Link Control) layer.

11. The wireless communication device according to claim 1 , wherein

the transmitter incorporates information indicating that data is the second data in a packet that transmits the data in an uppermost layer among a plurality of layers related to the wireless connection when transmitting the data in the second transmission mode.

12. The wireless communication device according to claim 11 , wherein

the uppermost layer is a New AS sublayer or a SDAP (Service Data Adaptation Protocol).

13. The wireless communication device according to claim 1 , wherein

the transmitter transmits the data a plurality of times when transmitting the data in the second transmission mode.

14. A wireless communication device that receives data transmitted using a packet including a transmission number from another wireless communication device that performs wireless connection, the wireless communication device comprising:

a receiver configured to receive a packet including the data; and

a processer configured to:

perform first reception processing when the received packet is transmitted in a first transmission mode in a first layer that manages a data link in the wireless connection used when the data is first data of which the transmission condition indicating a condition related to transmission of the data is a first transmission condition in a PDCP (Packet Data Convergence Protocol) layer, wherein the first transmission mode corresponds to a first logical channel of a first logical channel number; and

perform second reception processing when the received packet is transmitted in a second transmission mode in the first layer when the data is second data of which the transmission condition is a second transmission condition, wherein the second transmission mode corresponds to a second logical channel of a second logical channel number,

wherein the first layer is a lower layer of the PDCP layer.

15. The wireless communication device according to claim 14 , wherein

the receiver determines that the received packet is transmitted in the first transmission mode when a radio channel used in the received packet is a first radio channel used when transmitting the data in the first transmission mode, and

the receiver determines that the received packet is transmitted in the second transmission mode when the radio channel is a second radio channel different from the first radio channel, used when transmitting the data in the second transmission mode.

16. A wireless communication system comprising:

a first wireless communication device; and

a second wireless communication device configured to transmit data to the first wireless communication device that performs wireless connection using a packet including a transmission number, wherein

the second wireless communication device includes:

a controller configured to classify the data as first data when a transmission condition indicating a condition related to transmission of the data is a first transmission condition and to classify the data as second data when the transmission condition of the data is a second transmission condition different from the first transmission condition in a PDCP (Packet Data Convergence Protocol) layer; and

a transmitter configured to:

select a logical channel to transmission of the data from multiple channels according to the classification in the PDCP layer; and

transmit the data using the logical channel,

wherein the transmitter is further configured to:

select, when the data is the first data, a first transmission mode in a first layer that manages a data link in the wireless connection, and a first logical channel of a first logical channel number as the logical channel, the first logical channel number corresponding to the first transmission mode; and

select, when the data is the second data, a second transmission mode in the first layer, and a second logical channel of a second logical channel number as the logical channel, the second logical channel number corresponding to the second transmission mode, and

the first wireless communication device includes:

a receiver configured to receive a packet including the data; and

a processer configured to perform first reception processing when the received packet is transmitted in the first transmission mode and performs second reception processing when the received packet is transmitted in the second transmission mode,

wherein the first layer is a lower layer of the PDCP layer.

17. The wireless communication device according to claim 1 , wherein

the first logical channel number indicates that the data is transmitted in the first transmission mode, and

the second logical channel number indicates that the data is transmitted in the second transmission mode.

18. The wireless communication device according to claim 1 , wherein

the selecting of the first transmission mode includes determining the first transmission mode based on the first logical channel number, and

the selecting of the second transmission mode includes determining the second transmission mode based on the second logical channel number.