Apparatus and method for radio communication

• US 10,742,365 B2
• Filed: 09/07/2016
• Issued: 08/11/2020
• Est. Priority Date: 09/11/2015
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Hayashi, Sadafuku, Ogura, Daisuke, Futaki, Hisashi
• Primary Examiner(s): Orgad, Edan
• Assistant Examiner(s): Lalchinthang, Vanneilian
• Application Number:
  US15/751,721
• Publication Number:
  US 20180241516A1
• Time in Patent Office: 1,434 Days
• Field of Search: 370328
• CPC Class Codes: H04L 1/1657 Implicit acknowledgement of correct or incorrect reception, e.g. with a moving window
• CPC Class Codes: H04L 1/1864 ARQ related signaling H04L1/1607 takes precedence
• CPC Class Codes: H04L 1/1874 Buffer management
• CPC Class Codes: H04W 28/02 Traffic management, e.g. flow control or congestion control
• CPC Class Codes: H04W 4/00 Services specially adapted for wireless communication networks; Facilities therefor
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 76/16 Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
• CPC Class Codes: H04W 80/02 Data link layer protocols
• CPC Class Codes: H04W 80/06 Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless transmission control protocol/Internet protocol [TCP/IP] or user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

To enable delivery confirmation for data transmitted from a base station to a terminal apparatus via the access point. An apparatus according to an example aspect of the present invention includes an information acquisition unit configured to acquire a data unit from a packet data convergence protocol (PDCP) layer of a base station, and a communication processing unit configured to transmit the data unit to a terminal apparatus via an access point of a wireless local area network using a protocol enabling delivery confirmation.

Claims

1. An apparatus comprising:

a memory storing instructions; and

one or more processors configured to execute the instructions to;

acquire a data unit from a Packet Data Convergence Protocol (PDCP) layer of a base station; and

transmit the data unit to a terminal apparatus via an access point of a wireless local area network, using a packet of a transport layer protocol enabling delivery confirmation; and

provide a result of delivery confirmation of the transport layer protocol to the PDCP layer of the base station;

wherein the delivery confirmation is performed based on a sequence number included in the packet; and

wherein the result is provided to the PDCP layer of the base station based on the sequence number included in the packet and correspondence relationship, managed by the apparatus, between the sequence number and a PDCP sequence number.

2. The apparatus according to claim 1, wherein the result of delivery confirmation of the transport layer protocol includes information indicating that delivery of the data unit is acknowledged.

3. The apparatus according to claim 1, wherein the result of delivery confirmation of the transport layer protocol includes information indicating that delivery of the data unit is not acknowledged.

4. The apparatus according to claim 1, wherein the apparatus is a gateway different from the base station, or a module for the gateway.

5. The apparatus according to claim 1, wherein the apparatus is the base station, a base station apparatus for the base station, or a module for the base station apparatus.

6. The apparatus according to claim 5, wherein the one or more processors are configured to execute the instructions to:

perform transmission processing in the PDCP layer; and

advance a re-ordering window of the PDCP layer based on the result of delivery confirmation of the transport layer protocol.

7. The apparatus according to claim 5, wherein the one or more processors are configured to execute the instructions to:

perform transmission processing in the PDCP layer; and

perform control of congestion between the base station and the terminal apparatus based on information from the transport layer protocol.

8. The apparatus according to claim 7, wherein the control includes adjusting an amount of data directly transmitted from the base station to the terminal apparatus and an amount of data transmitted from the base station to the terminal apparatus via the access point.

9. An apparatus comprising:

a memory storing instructions; and

one or more processors configured to execute the instructions to;

acquire a data unit from a Packet Data Convergence Protocol (PDCP) layer of a base station, the data unit being transmitted to a terminal apparatus via an access point of a wireless local area network, using a packet of a transport layer protocol enabling delivery confirmation; and

perform reception processing of the data unit in the terminal apparatus; and

transmit a delivery confirmation of the transport layer protocol, the delivery confirmation being received from the terminal apparatus by the PDCP layer via the access point of a wireless local area network; and

wherein the delivery confirmation is performed based on a sequence number included in the packet; and

wherein the result is provided to the PDCP layer of the base station based on the sequence number included in the packet and correspondence relationship, managed by the gateway, between the sequence number and a PDCP sequence number.

10. The apparatus according to claim 9, wherein the one or more processors are configured to execute the instructions to receive the data unit using the transport layer protocol.

11. The apparatus according to claim 9, wherein the reception processing includes re-ordering in the PDCP layer.

12. The apparatus according to 9, wherein the one or more processors are configured to execute the instructions to transmit, to the base station, a PDCP status report indicating that the data unit is received.

13. The apparatus according to claim 9, wherein the apparatus is the terminal apparatus, or a module for the terminal apparatus.

14. The apparatus according to claim 9, wherein the transport layer protocol is a Transmission Control Protocol (TCP) or a Stream Control Transmission Protocol (SCTP).

15. A method comprising:

acquiring a data unit from a Packet Data Convergence Protocol (PDCP) layer of a base station; and

transmitting the data unit to a terminal apparatus via an access point of a wireless local area network, using a packet of a transport layer protocol enabling delivery confirmation; and

providing a result of delivery confirmation of the transport layer protocol to the PDCP layer of the base station; and

wherein the delivery confirmation is performed based on a sequence number included in the packet; and

wherein the result is provided to the PDCP layer of the base station based on the sequence number included in the packet and correspondence relationship, managed by the gateway, between the sequence number and a PDCP sequence number.