Resource allocation method in communication system, resource allocation system, and base station used for the same

• US 9,215,692 B2
• Filed: 09/16/2008
• Issued: 12/15/2015
• Est. Priority Date: 10/31/2007
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Nobukiyo, Takahiro, Lee, Jinsock
• Primary Examiner(s): Cumming, William D
• Application Number:
  US12/734,380
• Publication Number:
  US 20100240384A1
• Time in Patent Office: 2,646 Days
• Field of Search: 455/418, 455/436, 455/445, 455/450, 455/452.1, 455/502, 455/9, 370/252, 370/329, 370/335, 370/468, 707/201, 714/78, 714/748, 381/3, 379/220.01, 379/329
• US Class Current: 1/1
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

The present invention aims to provide a resource allocation method in a communication system that can effectively suppress a transmission delay. Provided is a resource allocation system in a communication system which includes a terminal 110 and a base station 100, wherein data is regularly generated at the terminal, the base station allocates a resource to the terminal, and the terminal transmits data by using the resource. The terminal 110 includes a generated traffic monitoring unit 113 that monitors the data and, when a predetermined change occurs in the data, reports it to the base station. The base station 100 includes a resource management unit 102 that determines a resource allocation according to the report from the terminal.

Claims

1. A base station in a communication system including a terminal and the base station itself, where traffic is generated regularly in the terminal, the base station allocates a resource to the terminal, and the terminal transmits the traffic through the resource, comprising:

an allocation unit that determines resource allocation based on a report from the terminal indicating that a transmission status of the traffic does not satisfy a predetermined condition,

wherein the predetermined condition includes that at least one parameter being monitored becomes greater than a threshold of the parameter,

further comprising;

a unit that measures a usage rate of the resource, and a unit that reduces allocated resources when the usage rate is less than a predetermined threshold.

2. A base station in a communication system including a terminal and the base station itself, where traffic is generated in the terminal, the base station allocates a resource to the terminal, and the terminal transmits the traffic through the resource, comprising:

a determination unit that monitors a reception status of the traffic and determines, in dynamic scheduling, whether the traffic is generated regularly based on the reception status, and an allocation unit that allocates, in persistent scheduling, a resource based on the monitoring result when it is determined that the traffic is generated regularly; and

,

wherein the base station transfers the monitoring result to a handover destination base station at a time of handover.

3. The base station according to claim 2, wherein the determination unit calculates a generation interval of the traffic and a generation size of the traffic based on the reception status of the traffic and determines whether each satisfies a predetermined condition.

4. A base station in a communication system including a terminal and the base station itself, where traffic is generated in the terminal, the base station allocates a resource to the terminal, and the terminal transmits the traffic through the resource, comprising:

a determination unit that monitors a reception status of the traffic and determines, in dynamic scheduling, whether the traffic is generated regularly based on the reception status, and an allocation unit that allocates, in persistent scheduling, a resource based on the monitoring result when it is determined that the traffic is generated regularly,

further comprising;

a measurement unit that measures a usage rate of allocated resources, and a release unit that releases the allocated resources when the usage rate is less than a predetermined threshold.

5. A base station in a communication system including a terminal and the base station itself, where traffic to be transmitted to the terminal arrives at the base station, the base station allocates a resource to the terminal, and the base station transmits traffic through the resource, comprising:

a determination unit that that is configured to monitor the traffic and is configured to determine whether the traffic arrives regularly based on the monitoring result, and an allocation unit that is configured to periodically allocate resources that transmit the traffic within a predetermined time period from generation of the traffic based on the monitoring result when it is determined that the traffic arrives regularly,

the determination unit is configured to determine that the traffic arrives regularly when variation of time intervals between arrivals of the traffic is less than a first threshold and a variation of sizes of the traffic is less than a second threshold.

6. The base station according to claim 5, wherein said allocation unit periodically allocates said resource in persistent scheduling.