JP2008035158A5

JP2008035158A5 -

Info

Publication number: JP2008035158A5
Application number: JP2006205712A
Authority: JP
Filing date: 2006-07-28
Publication date: 2009-09-03
Anticipated expiration: 2026-07-28

Claims

A scheduling method in a communication control apparatus that assigns any of a plurality of channels to a communication apparatus existing in a cell and transmits a signal to the communication apparatus using the allocated channel,
Selection from the plurality of channels based on first quality information indicating reception quality of a known first pilot signal and second quality information indicating reception quality of a signal transmitted in a signal section different from the first pilot signal Scheduling method characterized by allocating assigned channels to the communication device.

The scheduling method according to claim 1, wherein a resource block used for signal transmission in a channel to which the communication device is allocated includes at least the first pilot signal.

The scheduling method according to claim 1, wherein the second quality information is a value indicating reception quality of a second pilot signal or a data signal transmitted in a signal section different from the first pilot signal.

The scheduling method according to claim 3, wherein the first quality information and the second quality information are received.

2. The channel in which the difference between the first quality information and the second quality information is greater than or equal to a preset first threshold value is preferentially selected, and the selected channel is assigned to a communication device. The scheduling method according to claim 4.

Receiving the first quality information and the second quality information;
Subtracting the first quality information from the second quality information to calculate a quality difference;
Preferentially selecting a channel having the calculated quality difference equal to or greater than the first threshold;
6. The scheduling method according to claim 5, further comprising: assigning the selected channel to a communication device.

The step of selecting the channel further includes selecting, from the selected channels, a channel whose second quality information of the channel is better than the first quality information of other channels. Item 7. The scheduling method according to Item 6.

In the step of selecting the channel, when there is no channel in which the first quality information of each of the plurality of channels is larger than a preset second threshold, the channel having the quality difference equal to or higher than the first threshold is prioritized. The scheduling method according to claim 6, wherein the scheduling method is selected.

Receiving from the communication device a quality difference obtained by subtracting the first quality information from the second quality information;
Preferentially selecting a channel having the received quality difference equal to or greater than the first threshold;
6. The scheduling method according to claim 5, further comprising: assigning the communication device to the selected channel.

A quality difference obtained by subtracting the first quality information from the second quality information, the quality difference being equal to or greater than the first threshold value from the communication device;
Preferentially selecting a channel notified of a quality difference from the communication device;
6. The scheduling method according to claim 5, further comprising: assigning the communication device to the selected channel.

When there is no channel whose difference between the first quality information and the second quality information is greater than or equal to a first threshold, an empty channel is selected in descending order of the first quality information, and the selected channel is sent to the communication device. 6. The scheduling method according to claim 5, wherein allocation is performed.

A communication control device that assigns one of a plurality of channels to a communication device existing in a cell and transmits a signal to the communication device,
Quality notification information including first quality information indicating reception quality of a known first pilot signal and second quality information indicating reception quality of a signal transmitted in a signal section different from the first pilot signal is received from the communication device. Receiver to
A scheduling unit that performs channel allocation based on the received quality notification information and generates scheduling information indicating a result of channel allocation;
And a transmitter for notifying the generated scheduling information to a communication device existing in the cell.

13. The communication control apparatus according to claim 12, wherein a resource block used for signal transmission in a channel allocated to the communication apparatus includes at least the first pilot signal.

The scheduling unit calculates a difference between the first quality information and the second quality information, and prioritizes a channel in which the difference between the first quality information and the second quality information is equal to or greater than a preset first threshold value. 14. The communication control apparatus according to claim 13, wherein scheduling information indicating the result of assignment to the communication apparatus and a channel assignment is generated.

A communication device that communicates with a communication control device that transmits at least a first pilot signal,
A measurement unit for measuring reception quality of the first pilot signal and reception quality of a signal transmitted in a signal section different from the first pilot signal;
A quality notification information generating unit for generating quality notification information indicating a measurement result measured by the measurement unit;
And a transmitter for transmitting the generated quality notification information to the communication control device.

A receiver for receiving scheduling information notified from the communication control device;
The measurement unit is configured to measure reception quality of the first pilot signal and reception quality of a signal transmitted in a signal section different from the first pilot signal for the section indicated by the scheduling information. 15. The communication device according to 15.

The quality notification information generation unit has a difference between first quality information indicating reception quality of the first pilot signal and second quality information indicating reception quality of a signal transmitted in a signal section different from the first pilot signal. 17. The communication apparatus according to claim 16, wherein, when the value is equal to or greater than a preset first threshold value, quality notification information including information indicating the second quality information is generated.

At least a first pilot signal is transmitted, information indicating reception quality in the communication apparatus of the other party is received from the communication apparatus of the other party, and scheduling of the communication apparatus of the other party is performed based on the received information indicating the reception quality. A communication control device to perform;
The reception quality of the first pilot signal and the reception quality of a signal transmitted in a signal section different from the first pilot signal are measured, and the first quality information indicating the reception quality of the first pilot signal is different from the first pilot signal. A wireless communication system, comprising: a communication device that notifies the communication control device of second quality information indicating reception quality of a signal transmitted in a signal section.

19. The wireless communication system according to claim 18, wherein the second quality information is a value indicating reception quality of either a second pilot signal or a data signal transmitted in a signal section different from the first pilot signal. .

The wireless communication system according to claim 18, wherein the scheduling is performed based on a difference between the first quality information and the second quality information.