Packet transmission method, base station and mobile station

• US 20020191559A1
• Filed: 06/14/2002
• Published: 12/19/2002
• Est. Priority Date: 06/18/2001
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Chen, Lan, Yamao, Yasushi, Umeda, Narumi
• Granted Patent: US 7,443,816 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 72/54 based on quality criteria

Abstract

A packet transmission method in which packets are transmitted between a base station and a mobile station communicating with the base station includes the steps of: recognizing the size of each of the packets to be transmitted; determining a transmission rate for each packet in accordance with the recognized size of the packet; allocating a radio resource to the transmission of each packet between the base station and the mobile station based on the determined transmission rate; and transmitting each packet between the base station and the mobile station using the allocated radio resource. In the method, a modulation method or a radio resource used for transmitting the packets is determined by calculating a transmission rate in a wireless area according to the size of each packet and a transmission request in the wireless area. The transmission request is recognized by the base station from an upper network when the packets are transmitted downward, while calculated by the base station based on a user request and a transmission state of the upper network when the packets are transmitted upward. Therefore, end-to-end quality of service can be provided.

Claims

1. A packet transmission method in which a packet is transmitted between a base station and a mobile station communicating with said base station, comprising the steps of:

recognizing the size of the packet to be transmitted;

determining a transmission rate for the packet between the base station and the mobile station in accordance with the recognized size of the packet;

allocating a radio resource to transmission of the packet between the base station and the mobile station based on the determined transmission rate; and

transmitting the packet between the base station and the mobile station using the allocated radio resource.

2. The packet transmission method as claimed in claim 1, wherein when the packet is transmitted from the mobile station as a sender to a receiver via the base station, the transmission rate is determined based on the size of the packet to be transmitted and a transmission state of an upper network of the base station so as to satisfy a transmission condition between the mobile station and the receiver.

3. The packet transmission method as claimed in claim 2, wherein the transmission condition between the mobile station and the receiver includes transmission time of the packet from the mobile station to the receiver.

4. The packet transmission method as claimed in claim 1, wherein when the packet is transmitted from a sender to the mobile station as a receiver via the base station, the transmission rate is determined in accordance with the size of the packet so as to satisfy a transmission condition between the base station and the mobile station.

5. The packet transmission method as claimed in claim 4, wherein the transmission condition between the base station and the mobile station includes transmission time of the packet from the base station to the mobile station.

6. The packet transmission method as claimed in claim 1, wherein when the packet is transmitted from a sender to the mobile station as a receiver via the base station, the transmission rate is determined in accordance with the size of the packet to be transmitted so as to satisfy a transmission condition between the sender and the mobile station.

7. The packet transmission method as claimed in claim 6, wherein the transmission condition between the sender and the mobile station includes transmission time of the packet from the sender to the mobile station.

8. A base station that exchanges a packet between said base station and a mobile station communicating with the base station, comprising:

a packet size recognition part that recognizes the size of the packet to be transmitted;

a transmission rate determination part that determines a transmission rate between the base station and the mobile station in accordance with the recognized size of the packet;

a radio resource allocation part that allocates a radio resource to transmission of the packet between the base station and the mobile station based on the determined transmission rate; and

a packet transmission part that transmits the packet between the base station and the mobile station using the allocated radio resource.

9. The base station as claimed in claim 8, wherein when the packet is transmitted from the mobile station as a sender to a receiver via the base station, the transmission rate determination part determines the transmission rate in accordance with the size of the packet to be transmitted and a transmission state of an upper network of the base station so as to satisfy a transmission condition between the mobile station and the receiver.

10. The base station as claimed in claim 9, further comprising:

a first obtaining part that obtains the transmission condition provided from the mobile station.

11. The base station as claimed in claim 9, wherein the transmission condition includes transmission time of the packet from the mobile station to the receiver.

12. The base station as claimed in claim 8, wherein when the packet is transmitted from a sender to the mobile station as a receiver via the base station, the transmission rate determination part determines the transmission rate in accordance with the size of the packet to be transmitted so as to satisfy a transmission condition between the base station and the mobile station.

13. The base station as claimed in claim 12, further comprising:

a second obtaining part that obtains the transmission condition provided from an upper network.

14. The base station as claimed in claim 12, wherein the transmission condition includes transmission time of the packet from the base station to the mobile station.

15. The base station as claimed in claim 8, wherein when the packet is transmitted from a sender to the mobile station as a receiver via the base station, the transmission rate determination part determines the transmission rate in accordance with the size of the packet to be transmitted so as to satisfy a transmission condition between the sender and the mobile station.

16. The base station as claimed in claim 15, further comprising:

a third obtaining part that obtains the transmission condition provided from an upper network.

17. The base station as claimed in claim 15, wherein the transmission condition includes transmission time of the packet from the sender to the mobile station.

20. The mobile station as claimed in claim 19, further comprising:

a transmission condition notification part that notifies the base station of a transmission condition between the mobile station as a sender and a receiver,

wherein when the packet is transmitted from the mobile station to the receiver via the base station, the transmission rate is determined so as to satisfy the transmission condition.

21. The mobile station as claimed in claim 20, wherein the transmission condition includes transmission time of the packet from the mobile station to the receiver.

18. A mobile station that exchanges a packet between said mobile station and a base station, comprising:

a packet size recognition part that recognizes the size of the packet to be transmitted;

a transmission rate determination part that determines a transmission rate of the packet between the mobile station and said base station in accordance with the recognized size of the packet;

a transmission rate notification part that notifies the base station of the determined transmission rate; and

a packet transmission part that transmits the packet between the mobile station and the base station using a radio resource allocated by the base station based on the notified transmission rate.

19. A mobile station that exchanges a packet between said mobile station and a base station, comprising:

a packet size recognition part that recognizes the size of the packet to be transmitted;

a packet size notification part that notifies the base station of the recognized size of the packet; and

a packet transmission part that transmits the packet between the mobile station and the base station using a radio resource allocated by the base station based on a transmission rate determined in accordance with the size of the packet.