Resource scheduling method and device

• US 9,999,068 B2
• Filed: 04/15/2016
• Issued: 06/12/2018
• Est. Priority Date: 03/25/2011
• Status: Active Grant

• Current Assignee: Nufront Mobile Communications Technology Company Limited
• Original Assignee: Nufront Mobile Communications Technology Company Limited
• Inventors: Bao, Dongshan, Wang, Jing, Liu, Shenfa, Zeng, Yongbo, Zhou, Yubao, Yan, Zhigang, Lei, Jun, Pan, Lijun, Wang, Feifei
• Primary Examiner(s): HAN, CLEMENCE S
• Application Number:
  US15/130,384
• Publication Number:
  US 20160234858A1
• Time in Patent Office: 788 Days
• CPC Class Codes: H04L 5/006 Quality of the received signal, e.g. BER, SNR, water filling
• 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 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access

Abstract

Provided are a resource scheduling method and device; the method comprises: scheduling resource according to the transmission demands; and configuring a frame structure with a non-fixed frame length matching the scheduled resource. The method according to the present invention prevents wastage of wireless resources caused by competition conflict or random back-off, and can better adapt to the demands of different kinds of data services with varied features in the future.

Claims

1. A resource scheduling method, comprising:

scheduling resources according to a transmission demand; and

configuring a frame structure which has an unfixed frame length and matches with the scheduled resources;

wherein

at least a preamble sequence and a system information channel are configured in the frame structure;

the preamble sequence is used to realize synchronization;

the system information channel is used to carry the information indicating the frame structure, when there is a demand on uplink transmission, uplink transmission resources are scheduled according to the demand on uplink transmission, to configure an uplink transmission channel in the frame structure, and when there is a demand on downlink transmission, downlink transmission resources are scheduled according to the demand on downlink transmission, to configure a downlink transmission channel in the frame structure;

and wherein

when there is the demand on uplink transmission, a downlink sounding channel and a channel quality information (CQI) feedback channel are configured in the frame structure, where the downlink sounding channel is used by a circuit access point (CAP) to send a downlink sounding signal to a station (STA), and the CQI feedback channel is used by the STA to feed back downlink CQI measured according to the downlink sounding signal to the CAP; and

when scheduling the uplink transmission resources according to the demand on uplink transmission, uplink CQI is determined according to the downlink CQI fed back by the STA based on uplink and downlink reciprocity, and the uplink transmission resources are scheduled in combination with the uplink CQI;

or,

when there is the demand on uplink transmission, a downlink sounding channel, a CQI feedback channel and a CSI feedback channel are configured in the frame structure, where the downlink sounding channel is used by the CAP to send a downlink sounding signal to the STA, the CQI feedback channel is used by the STA to feed back downlink CQI measured according to the downlink sounding signal to the CAP, and a channel status information (CSI) feedback channel is used by the STA to feed back downlink CSI measured according to the downlink sounding signal to the CAP; and

when scheduling the uplink transmission resources according to the demand on uplink transmission, uplink CQI is determined from the downlink CQI fed back by the STA and uplink CSI is determined from the downlink CSI fed back by the STA based on uplink and downlink reciprocity, and the uplink transmission resources are scheduled in combination with the uplink CQI and the uplink CSI;

or,

when there is the demand on uplink transmission, an uplink sounding channel, a downlink sounding channel and a CQI feedback channel are configured in the frame structure, where the uplink sounding channel is used by the STA to send an uplink sounding signal to the CAP, the downlink sounding channel is used by the CAP to send a downlink sounding signal to the STA, and the CQI feedback channel is used by the STA to feed back downlink CQI measured according to the downlink sounding signal to the CAP; and

when scheduling the uplink transmission resources according to the demand on uplink transmission, the uplink sounding signal is measured on the uplink sounding channel to calculate uplink channel status information CSI, uplink CQI is determined according to the downlink CQI fed back by the STA based on uplink and downlink reciprocity, and the uplink transmission resources are scheduled in combination with the uplink CQI and uplink CSI;

or,

when there is the demand on uplink transmission, the uplink sounding channel, a downlink sounding channel and a CSI feedback channel are configured in the frame structure, where an uplink sounding channel is used by the STA to send an uplink sounding signal to the CAP, the downlink sounding channel is used by the CAP to send a downlink sounding signal to the STA, and the CSI feedback channel is used by the STA to feed back downlink CSI measured according to the downlink sounding signal to the CAP; and

when scheduling the uplink transmission resources according to the demand on uplink transmission, the uplink sounding signal is measured on the uplink sounding channel to calculate uplink channel quality information CQI, uplink CSI is determined according to the downlink CSI fed back by the STA based on uplink and downlink reciprocity, and the uplink transmission resources are scheduled in combination with the uplink CQI and the uplink CSI;

or

when there is the demand on downlink transmission, an uplink sounding channel used by the STA to send an uplink sounding signal to the CAP is configured in the frame structure; and

when scheduling the downlink transmission resources according to the demand on downlink transmission, the uplink sounding signal is measured on the uplink sounding channel to calculate uplink CQI, downlink CQI is determined based on uplink and downlink reciprocity, and the downlink transmission resources are scheduled in combination with the determined downlink CQI;

or,

when there is the demand on downlink transmission, an uplink sounding channel used by the STA to send an uplink sounding signal to the CAP is configured in the frame structure; and

when scheduling the downlink transmission resources according to the demand on downlink transmission, the uplink sounding signal is measured on the uplink sounding channel to calculate uplink CQI and uplink CSI, downlink CQI and downlink CSI are obtained based on uplink and downlink reciprocity, and the downlink transmission resources are scheduled in combination with the downlink CQI and the downlink CSI;

or,

when there is the demand on downlink transmission, an uplink sounding channel, a downlink sounding channel and a CQI feedback channel are configured in the frame structure, wherein the uplink sounding channel is used by the STA to send an uplink sounding signal to the CAP, a downlink sounding channel is used by the CAP to send the downlink sounding signal to the STA, and the CQI feedback channel is used by the STA to feed back downlink CQI measured by the downlink sounding signal to the CAP; and

when scheduling the downlink transmission resources according to the demand on downlink transmission, the uplink sounding signal is measured on the uplink sounding channel to calculate uplink CSI, downlink CSI is determined based on uplink and downlink reciprocity, and the downlink transmission resources are scheduled according to the downlink CSI and the downlink CQI fed back by the STA.

2. The method of claim 1, wherein,

the demand on uplink transmission includes one or more of a demand on uplink service transmission, a demand on uplink signaling transmission and a demand on the feedback of a downlink service;

the uplink transmission channel configured according to the demand on uplink transmission includes one or more of an uplink service transmission channel, an uplink signaling channel and a downlink service feedback channel;

the demand on downlink transmission includes one or more of a demand on downlink service transmission, a demand on downlink signaling transmission and a demand on the feedback of an uplink service; and

the downlink transmission channel configured according to the demand on downlink transmission includes one or more of a downlink service transmission channel, a downlink signaling channel and an uplink service feedback channel.

3. The method of claim 1, further comprising:

configuring a control channel in the frame structure, to indicate assignment and scheduling of transmission resources and a transmission format of a channel occupying the transmission resources.

4. The method of claim 1, wherein,

configuring an uplink scheduling request channel in the frame structure, wherein the uplink scheduling request channel is used by the STA to send an uplink scheduling request, to request for transmission resources which are used to report to the CAP the demand on uplink transmission.

5. The method of claim 1, wherein,

configuring a random access channel in the frame structure, and the random access channel is used by the STA to access and establish a relation with the CAP.

6. A resource scheduling device, comprising:

a hardware processor, and a communication unit for signal transmission, the processor being configured to;

schedule resources according to a transmission demand; and

configure a frame structure which has an unfixed frame length and matches with the scheduled resources;

wherein,

the hardware processor configures at least a preamble sequence and a system information channel in the frame structure;

wherein, the preamble sequence is used to realize synchronization, and the system information channel is used to carry information indicating the frame structure;

the hardware processor is used to schedule the uplink transmission resources according to a demand on uplink transmission, to configure an uplink transmission channel in the frame structure; and

further used to schedule the downlink transmission resources according to a demand on downlink transmission, and configures a downlink transmission channel in the frame structure;

and wherein

the hardware processor is adapted to, when there is the demand on uplink transmission, configure a downlink sounding channel and a CQI feedback channel in the frame structure, where the downlink sounding channel is used by a CAP to send a downlink sounding signal to a STA, and the CQI feedback channel is used by the STA to feed back downlink CQI measured by the downlink sounding signal to the CAP; and

when scheduling the uplink transmission resources according to the demand on uplink transmission, determine uplink CQI according to the downlink CQI fed back by the STA based on uplink and downlink reciprocity, and schedule the uplink transmission resources in combination with the uplink CQI;

or,

the hardware processor is adapted to, when there is the demand on uplink transmission, configure a downlink sounding channel, a CQI feedback channel and a CSI feedback channel in the frame structure, where the downlink sounding channel is used by the CAP to send a downlink sounding signal to the STA, the CQI feedback channel is used by the STA to feed back downlink CQI measured according to the downlink sounding signal to the CAP, and a CSI feedback channel is used by the STA to feed back downlink CSI measured according to the downlink sounding signal to the CAP; and

when scheduling the uplink transmission resources according to the demand on uplink transmission, determine uplink CQI according to the downlink CQI fed back by the STA based on uplink and downlink reciprocity, determine uplink CSI according to the downlink CSI fed back by the STA, and schedule the uplink transmission resources in combination with the uplink CQI and the uplink CSI;

or,

the hardware processor is adapted to, when there is the demand on uplink transmission, configure the uplink sounding channel, a downlink sounding channel and a CQI feedback channel in the frame structure, wherein an uplink sounding channel is used by the STA to send an uplink sounding signal to the CAP, the downlink sounding channel is used by the CAP to send a downlink sounding signal to the STA, and the CQI feedback channel is used by the STA to feed back downlink CQI measured by the downlink sounding signal to the CAP; and

when scheduling the uplink transmission resources according to the demand on uplink transmission, measure the uplink sounding signal according to the demand on uplink transmission to calculate uplink channel status information CSI, determine uplink CQI according to the downlink CQI fed back by the STA based on uplink and downlink reciprocity, and schedule the uplink transmission resources in combination with the uplink CQI and uplink CSI;

or,

the hardware processor is adapted to, when there is the demand on uplink transmission, configure an uplink sounding channel, a downlink sounding channel and a CSI feedback channel in the frame structure, wherein the uplink sounding channel is used by the STA to send an uplink sounding signal to the CAP, the downlink sounding channel is used by the CAP to send a downlink sounding signal to the STA, and the CSI feedback channel is used by the STA to feed back downlink CSI measured by the downlink sounding signal to the CAP; and

when scheduling the uplink transmission resources according to the demand on uplink transmission, measure the uplink sounding signal according to the demand on uplink transmission to calculate uplink channel quality information CQI, determine uplink CSI according to the downlink CSI fed back by the STA based on uplink and downlink reciprocity, and schedule the uplink transmission resources in combination with the uplink CQI and the uplink CSI;

or

the hardware processor is adapted to, when there is the demand on downlink transmission, configure an uplink sounding channel in the frame structure, and the uplink sounding channel is used by the STA to send an uplink sounding signal to the CAP; and

when scheduling the downlink transmission resources according to the demand on downlink transmission, measure the uplink sounding signal on the uplink sounding channel to calculate uplink CQI, determine downlink CQI based on uplink and downlink reciprocity, and schedule the downlink transmission resources in combination with the determined downlink CQI;

or,

the hardware processor is adapted to, when there is the demand on uplink transmission, configure an uplink sounding channel in the frame structure, wherein the uplink sounding channel is used by the STA to send an uplink sounding signal to the CAP; and

when scheduling the downlink transmission resources according to the demand on downlink transmission, measure the uplink sounding signal according to the demand on uplink transmission to calculate uplink CQI and uplink CSI, determine downlink CQI and downlink CSI based on uplink and downlink reciprocity, and schedule the downlink transmission resources in combination with the downlink CQI and downlink CSI;

or,

the hardware processor is adapted to, when there is the demand on downlink transmission, configure an uplink sounding channel, a downlink sounding channel and a CQI feedback channel in the frame structure, wherein the uplink sounding channel is used by the STA to send an uplink sounding signal to the CAP, the downlink sounding channel is used by the CAP to send a downlink sounding signal to the STA, and the CQI feedback channel is used by the STA to feed back downlink CQI measured by the downlink sounding signal to the CAP; and

when scheduling the downlink transmission resources according to the demand on downlink transmission, measure the uplink sounding signal on the uplink sounding channel to calculate uplink CSI, determine downlink CSI based on uplink and downlink reciprocity, and schedule the downlink transmission resources according to the downlink CSI and the downlink CQI fed back by the STA.

7. The device of claim 6, wherein,

the demand on uplink transmission includes one or more of a demand on uplink service transmission, a demand on uplink signaling transmission and a demand on the feedback of a downlink service;

the uplink transmission channel includes one or more of an uplink service transmission channel, an uplink signaling channel and a downlink service feedback channel;

the demand on downlink transmission includes one or more of a demand on downlink service transmission, a demand on downlink signaling transmission and a demand on the feedback of an uplink service; and

the downlink transmission channel includes one or more of a downlink service transmission channel, a downlink signaling channel and an uplink service feedback channel.

8. The device of claim 6, wherein,

the hardware processor is adapted to further configure an uplink scheduling request channel in the frame structure, wherein the uplink scheduling request channel is used by the STA to send an uplink scheduling request, to request for transmission resources which are used to report to the CAP the demand on uplink transmission.

9. The device of claim 6, wherein,

the hardware processor is adapted to configure a random access channel in the frame structure, and the random access channel is used by the STA to access and establish a relation with the CAP.

10. The device of claim 6, wherein,

the hardware processor is further used to configure the control channel in the frame structure, to indicate assignment and scheduling of transmission resources and the transmission format of a channel occupying the transmission resources.