DATA FLOW AMOUNT CONTROL DEVICE AND DATA FLOW AMOUNT CONTROL METHOD

• US 20080068999A1
• Filed: 09/19/2007
• Published: 03/20/2008
• Est. Priority Date: 09/19/2006
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: ISHII, Hiroyuki, Furutani, Koji
• Granted Patent: US 8,406,199 B2
• Time in Patent Office: Days
• US Class Current: 370/235
• CPC Class Codes: H04L 47/15 in relation to multipoint traffic arrangements for broadcast or multicast in data networks H04L12/18
• CPC Class Codes: H04L 47/22 Traffic shaping
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/762 triggered by the network
• CPC Class Codes: H04L 47/788 Autonomous allocation of resources
• CPC Class Codes: H04L 47/822 Collecting or measuring resource availability data
• CPC Class Codes: H04L 47/824 Applicable to portable or mobile terminals
• CPC Class Codes: H04W 28/0231 based on communication conditions dynamic wireless traffic scheduling definition based on channel quality criteria H04W72/54
• CPC Class Codes: H04W 28/12 using signalling between network elements
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 72/569 of the traffic information
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]

Abstract

The present invention relates to a data flow amount control device in a mobile communication system which includes a plurality of mobile stations, a control station relaying packets addressed to each of the plurality of mobile stations, and a base station temporarily storing the packets transmitted from the control station in a buffer and transmitting the packets to each of the plurality of mobile stations. The data flow amount control device comprises a determination unit configured to determine an initial value of an amount of packets which are addressed to a mobile station newly starting a communication in the mobile communication system and are transmitted from the control station to the base station, according to the number of mobile stations which are performing the communication in the mobile communication system.

Claims

1. A data flow amount control device in a mobile communication system which includes a plurality of mobile stations, a control station relaying packets addressed to each of the plurality of mobile stations, and a base station temporarily storing the packets transmitted from the control station in a buffer and transmitting the packets to each of the plurality of mobile stations, comprising:

a determination unit configured to determine an initial value of an amount of packets which are addressed to a mobile station newly starting a communication in the mobile communication system and are transmitted from the control station to the base station, according to the number of mobile stations which are performing the communication in the mobile communication system.

2. The data flow amount control device according to claim 1, wherein the determination unit is configured to determine the initial value according to the number of the mobile stations and a maximum transmission rate at which the mobile station newly starting the communication is capable of receiving the packets.

3. The data flow amount control device according to claim 2, wherein the determination unit is configured to determine the initial value according to the number of the mobile stations, the maximum transmission rate, and a predetermined factor.

4. The data flow amount control device according to claim 3, wherein the determination unit is configured to determine the initial value Initial_CA, according to an equation,

Initial_—

CA=A×

MAX_rate/Number,

by using the number of the mobile stations Number, the maximum transmission rate MAX_rate, and the predetermined factor A.

9. The data flow amount control device according to claim 1, wherein the mobile station newly starting the communication, is a mobile station newly starting a communication with the base station due to a cell change.

5. A data flow amount control device in a mobile communication system which includes a plurality of mobile stations, a control station relaying packets addressed to each of the plurality of mobile stations, and a base station temporarily storing the packets transmitted from the control station in a buffer and transmitting the packets to each of the plurality of mobile stations, comprising:

a determination unit configured to determine, when the base station is performing a communication with each of the plurality of mobile stations via a shared channel, an initial value of an amount of packets which are addressed to a mobile station newly starting a communication in the mobile communication system and are transmitted from the control station to the base station, according to an allocation frequency of the shared channel to each of the plurality of mobile stations which are performing the communication in the mobile communication system.

6. The data flow amount control device according to claim 5, wherein the determination unit is configured to determine the initial value according to the allocation frequency of the shared channel, and a maximum transmission rate at which the mobile station newly starting the communication is capable of receiving the packets.

7. The data flow amount control device according to claim 6, wherein the determination unit is configured to determine the initial value according to the allocation frequency of the shared channel, the maximum transmission rate, and a predetermined factor.

8. The data flow amount control device according to claim 7, wherein the determination unit is configured to determine the initial value Initial_CA, according to an equation,

Initial_—

CA=A×

MAX_rate×

Freq,

by using an average value Freq of the allocation frequency of the shared channel, the maximum transmission rate MAX_rate, and the predetermined factor A.

10. A data flow amount control method in a mobile communication system which includes a plurality of mobile stations, a control station relaying packets addressed to each of the plurality of mobile stations, and a base station temporarily storing the packets transmitted from the control station in a buffer and transmitting the packets to each of the plurality of mobile stations, comprising the step of;

determining an initial value of an amount of packets which are addressed to a mobile station newly starting a communication in the mobile communication system and transmitted from the control station to the base station, according to the number of mobile stations which are performing the communication in the mobile communication system.