Data scheduling method and device

Patent metadata

Field	Value
Publication number	US-9814061-B2
Application number	US-201514812900-A
Country	US
Kind code	B2
Filing date	Jul 29, 2015
Priority date	Jan 30, 2013
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

Embodiments of the present invention disclose a data scheduling method and a data scheduling device, which is configured to: receive channel quality information sent by a first terminal; calculate a current instantaneous scheduling rate of the first terminal on a first component carrier by using the channel quality information; acquire an average scheduling rate of the first terminal on the first component carrier; calculate a scheduling priority of the first terminal on the first component carrier by using the instantaneous scheduling rate and the average scheduling rate; and allocate a physical resource of the first component carrier to the first terminal. In this way, a multi-carrier terminal is enabled to obtain a stable high rate, differentiation between terminals is achieved.

First claim

What is claimed is:

1. A data scheduling method, comprising:
receiving channel quality information sent by a first terminal, wherein the first terminal is a terminal for which multiple carriers are activated;
calculating a current instantaneous scheduling rate of the first terminal on a first component carrier by using the channel quality information;
acquiring an average scheduling rate of the first terminal on the first component carrier;
calculating a scheduling priority of the first terminal on the first component carrier by using the current instantaneous scheduling rate and the average scheduling rate;
allocating a physical resource of the first component carrier to the first terminal according to a descending order of scheduling priorities of terminals to which the physical resource needs to be allocated, wherein the terminals to which the physical resource needs to be allocated comprise the first terminal and a second terminal;
determining that the first component carrier is a primary component carrier or a secondary component carrier of the first terminal; and
wherein allocating the physical resource of the first component carrier to the first terminal according to the descending order of scheduling priorities of terminals to which the physical resource needs to be allocated comprises:
when the first component carrier is the secondary component carrier of the first terminal, and when the first component carrier is a primary component carrier of the second terminal or the second terminal is a non-multi-carrier terminal, after allocating the physical resource of the first component carrier to the second terminal, allocating the physical resource of the first component carrier to the first terminal, and
when the first component carrier is the primary component carrier of the first terminal and the first component carrier is a secondary component carrier of the second terminal, after allocating the physical resource of the first component carrier to the first terminal, allocating the physical resource of the first component carrier to the second terminal.

2. The method according to claim 1 , further comprising:
after allocating the physical resource of the first component carrier to the first terminal, calculating and storing the average scheduling rate of the first terminal on the first component carrier.

3. The method according to claim 1 , wherein:
when the first component carrier is the primary component carrier of the first terminal, adding the first terminal to a first queue, and when the first component carrier is the secondary component carrier of the first terminal, adding the first terminal to a second queue;
when the first component carrier is the primary component carrier of the second terminal or the second terminal is the non-multi-carrier terminal, adding the second terminal to the first queue, and when the first component carrier is the secondary component carrier of the second terminal, adding the second terminal to the second queue; and
first allocating the physical resource of the first component carrier according to a descending order of scheduling priorities of terminals in the first queue, and then allocating a physical resource of the first component carrier according to a descending order of scheduling priorities of terminals in the second queue.

4. A data scheduling method, comprising:
receiving channel quality information sent by a first terminal, wherein the first terminal is a terminal for which multiple carriers are activated;
calculating a current instantaneous scheduling rate of the first terminal on a first component carrier by using the channel quality information;
acquiring an average scheduling rate of the first terminal on the first component carrier;
calculating a scheduling priority of the first terminal on the first component carrier by using the current instantaneous scheduling rate and the average scheduling rate;
allocating a physical resource of the first component carrier to the first terminal according to a descending order of scheduling priorities of terminals to which the physical resource needs to be allocated, wherein the terminals to which the physical resource needs to be allocated comprise the first terminal and a second terminal;
wherein after receiving channel quality information sent by the first terminal, the method further comprises:
acquiring a current resource utilization rate of the first component carrier; and
when the current resource utilization rate of the first component carrier is greater than a first threshold, deactivating scheduling for the first terminal on the first component carrier.

5. The method according to claim 4 , wherein after deactivating scheduling for the first terminal on the first component carrier, the method further comprises:
acquiring a buffer status of the first terminal; and
when the current resource utilization rate of the first component carrier is less than a second threshold and the buffer status of the first terminal is overstocking, activating scheduling for the first terminal on the first component carrier, wherein the second threshold is less than the first threshold.

6. A data scheduling device, comprising:
a receiving unit, configured to receive channel quality information sent by a first terminal, wherein the first terminal is a terminal for which multiple carriers are activated;
a rate acquiring unit, configured to acquire an average scheduling rate of the first terminal on a first component carrier;
a calculation unit, configured to calculate a current instantaneous scheduling rate of the first terminal on the first component carrier by using the channel quality information, and calculate a scheduling priority of the first terminal on the first component carrier by using the current instantaneous scheduling rate and the average scheduling rate;
a scheduling unit, configured to allocate a physical resource of the first component carrier to the first terminal according to a descending order of scheduling priorities of terminals to which the physical resource needs to be allocated, wherein the terminals to which the physical resource needs to be allocated comprise the first terminal and a second terminal;
a carrier determining unit, configured to determine that the first component carrier is a primary component carrier or a secondary component carrier of the first terminal; and
wherein the scheduling unit is configured to:
when the first component carrier is the secondary component carrier of the first terminal, and when the first component carrier is a primary component carrier of the second terminal or the second terminal is a non-multi-carrier terminal, after allocating the physical resource of the first component carrier to the second terminal, allocate the physical resource of the first component carrier to the first terminal, and
when the first component carrier is the primary component carrier of the first terminal and the first component carrier is a secondary component carrier of the second terminal, after allocating the physical resource of the first component carrier to the first terminal, allocate the physical resource of the first component carrier to the second terminal.

7. The device according to claim 6 , wherein:
the calculation unit is further configured to calculate the average scheduling rate of the first terminal on the first component carrier after the physical resource of the first component carrier is allocated to the first terminal; and
the device further comprises:
a storage unit, configured to store the average scheduling rate obtained through calculation.

8. The device according to claim 6 , wherein the scheduling unit is configured to:
when the first component carrier is the primary

Assignees

• Huawei Tech Co Ltd

Inventors

• Ren Xiaofeng
• Fang Minxi

Classifications

• H04W72/566 Primary

  of the information or information source or recipient · CPC title

• H04W72/542

  using measured or perceived quality · CPC title

• H04W72/535

  based on resource usage policies · CPC title

• H04L5/001 Primary

  the frequencies being arranged in component carriers · CPC title

• H04W72/56

  based on priority criteria · CPC title