Radio base station, packet transmission apparatus, wireless terminal, control method, and program

• US 10,616,803 B2
• Filed: 10/30/2015
• Issued: 04/07/2020
• Est. Priority Date: 10/31/2014
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Nobukiyo, Takahiro, Inoue, Takamichi, Ohta, Daisuke, Osuga, Toru
• Primary Examiner(s): Brockman, Angel T
• Application Number:
  US15/519,864
• Publication Number:
  US 20170245178A1
• Time in Patent Office: 1,621 Days
• Field of Search: 370230
• CPC Class Codes: H04L 47/245 using preemption
• CPC Class Codes: H04L 47/34 ensuring sequence integrity, e.g. using sequence numbers
• CPC Class Codes: H04L 47/62 characterised by scheduling criteria
• CPC Class Codes: H04W 28/0268 using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] negotiating SLA or negotiating QoS H04W28/24
• CPC Class Codes: H04W 28/0273 adapting protocols for flow control or congestion control to wireless environment, e.g. adapting transmission control protocol [TCP] wireless network protocols or protocol adaptations to wireless operation, e.g. wireless application protocol H04W80/00
• CPC Class Codes: H04W 28/14 using intermediate storage
• CPC Class Codes: H04W 72/56 based on priority criteria
• 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

Abstract

Provided is a radio base station, etc. that realize transmission control in view of QoE. According to a first aspect of the present invention, there is provided a radio base station that receives a packet(s) transmitted from a packet transmission apparatus via a network and transmits the received packet(s) to a wireless terminal(s), the radio base station including: acquisition means that acquires a packet type(s) or a packet identifier(s) set in the packet(s) by the packet transmission apparatus; and control means that performs transmission control to change a transmission order of the packet(s) based on the packet type(s) or the packet identifier(s).

Claims

1. A radio base station that receives a packet(s) transmitted from a packet transmission apparatus via a network and transmits the received packet(s) to a wireless terminal(s), the radio base station comprising:

an acquisition unit implemented at least by hardware and that acquires a packet type(s) or a packet identifier(s) set in the packet(s) by the packet transmission apparatus; and

a control unit implemented at least by the hardware and that performs transmission control to change a transmission order of the packet(s) based on the packet type(s) or the packet identifier(s),

wherein the packet type(s) or the packet identifier(s) is a packet type(s) or a packet identifier(s) in a first layer, the packet identifier(s) comprising a sequence number allocated for identification of a corresponding packet, and the packet type comprising information whether the corresponding packet is an initially transmitted TCP packet or not,

wherein the control unit performs transmission control in a second layer lower than the first layer based on the packet type(s) or the packet identifier(s) in the first layer.

2. The radio base station according to claim 1, wherein, when the packet type is a retransmitted packet, the control unit moves forward the transmission order of the packet(s).

3. The radio base station according to claim 1, comprising:

a buffer for accumulating the packet(s), and

wherein the control unit changes a buffering order of the packet(s) depending on a packet transmission priority(ies) determined based on the packet type(s) or the packet identifier(s).

4. The radio base station according to claim 1, comprising:

a plurality of buffers having different priorities for accumulating the packets, and

wherein the control buffers the packet(s) in a buffer of a corresponding priority depending on a packet transmission priority(ies) determined based on the packet type(s) or the packet identifier(s).

5. The radio base station according to claim 1, wherein the packet type(s) or the packet identifier(s) is set in a packet header transmitted from the packet transmission apparatus.

6. The radio base station according to claim 3, wherein the control unit starts the transmission control when at least one of a total number of and a total size of the buffered packets satisfies a predetermined condition(s).

10. The radio base station according to claim 1, wherein, when the second layer is a layer of PDCP.

7. A method of controlling a radio base station that receives a packet(s) transmitted from a packet transmission apparatus via a network and transmits the received packet(s) to a wireless terminal(s), the method comprising:

acquiring a packet type(s) or a packet identifier(s) set in the packet(s) by the packet transmission apparatus from the packet(s); and

performing transmission control to change a transmission order of the packet(s) based on the packet type(s) or the packet identifier(s),

wherein the packet type(s) or the packet identifier(s) is a packet type(s) or a packet identifier(s) in a first layer, the packet identifier(s) comprising a sequence number allocated for identification of a corresponding packet, and the packet type comprising information whether the corresponding packet is an initially transmitted TCP packet or not,

wherein the transmission control is performed in a second layer lower than the first layer based on the packet type(s) or the packet identifier(s) in the first layer.

8. A program, recorded on a computer-readable non-transient recording medium, the program causing a computer to perform a method of controlling a radio base station that receives a packet(s) transmitted from a packet transmission apparatus via a network and transmits the received packet(s) to a wireless terminal(s), the program causing the computer to perform processing of:

acquiring a packet type(s) or a packet identifier(s) set in the packet(s) by the packet transmission apparatus from the packet(s); and

performing transmission control to change a transmission order of the packet(s) based on the packet type(s) or the packet identifier(s),

wherein the packet type(s) or the packet identifier(s) is a packet type(s) or a packet identifier(s) in a first layer, the packet identifier(s) comprising a sequence number allocated for identification of a corresponding packet, and the packet type comprising information whether the corresponding packet is an initially transmitted TCP packet or not,

wherein the transmission control is performed in a second layer lower than the first layer based on the packet type(s) or the packet identifier(s) in the first layer.

9. A wireless terminal, receiving a packet(s) from a radio base station that has received the packet(s) from a packet transmission apparatus, the wireless terminal comprising:

a reception unit implemented at least by hardware that receives the packet(s) from the radio base station that performs transmission control to change a transmission order of the packet(s) based on a packet type(s) or a packet identifier(s) set in the packet(s) by the packet transmission apparatus; and

a data configuration implemented at least by the hardware and that reconfigures data transmitted from the packet transmission apparatus from the packet(s),

wherein the packet type(s) or the packet identifier(s) is a packet type(s) or a packet identifier(s) in a first layer, the packet identifier(s) comprising a sequence number allocated for identification of a corresponding packet, and the packet type comprising information whether the corresponding packet is an initially transmitted TCP packet or not,

wherein the transmission control is performed in a second layer lower than the first layer based on the packet type(s) or the packet identifier(s) in the first layer.