CN110225596B - Scheduling method and system combining PUCCH period - Google Patents

Scheduling method and system combining PUCCH period Download PDF

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CN110225596B
CN110225596B CN201910456337.6A CN201910456337A CN110225596B CN 110225596 B CN110225596 B CN 110225596B CN 201910456337 A CN201910456337 A CN 201910456337A CN 110225596 B CN110225596 B CN 110225596B
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period
scheduling
pucch
downlink scheduling
downlink
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CN110225596A (en
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卜智勇
谌晓清
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Chengdu Zhongke Micro Information Technology Research Institute Co Ltd
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Chengdu Zhongke Micro Information Technology Research Institute Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a dispatching method and a system combining PUCCH periods, wherein the method comprises the following steps: a base station configures a downlink scheduling period of UE according to the PUCCH period of the UE, wherein the downlink scheduling period is the same as the PUCCH period and lags behind the PUCCH period; when the base station finishes processing PUCCH feedback of the UE in the current PUCCH period, calculating the data volume needing to be scheduled in each downlink scheduling period according to downlink QoS; the base station executes downlink scheduling of the UE in a current downlink scheduling period lagging a current PUCCH period until the scheduling of the data volume is finished; the downlink scheduling period lags behind the PUCCH period and is the minimum time required by the base station for processing PUCCH feedback, the time unit is a subframe, and the downlink scheduling period comprises a plurality of subframes. The invention can make full use of the air interface frequency spectrum resources.

Description

Scheduling method and system combining PUCCH period
Technical Field
The invention relates to the technical field of wireless communication, in particular to a scheduling method and system combining PUCCH periods.
Background
In the existing LTE communication system, a UE (User Equipment) periodically feeds back parameters such as channel quality of a downlink channel through PUCCH resources, and a base station processes and stores the channel quality fed back by the UE.
When the base station performs downlink scheduling authorization, the base station performs downlink scheduling authorization on the UE according to the QoS (Quality of Service) of the UE and the stored channel Quality. Although there is no problem in this authorization method, the biggest characteristics of wireless communication are: the channel quality of a wireless channel varies from moment to moment and transmission using the channel in use is never possible. However, when the channel quality of the wireless channel changes frequently, but there is always correlation, and the closer the time is, the smaller the change of the channel quality is. Therefore, the measurement result is still considered to be valid for a period of time after the channel measurement.
However, the existing air interface downlink scheduling authorization method only considers the QoS requirement, does not consider the accuracy of the channel quality of the downlink channel fed back by the UE, does not consider the feedback period of the PUCCH resource, and causes a large deviation between the channel use time and the channel measurement time.
Disclosure of Invention
The invention mainly solves the technical problem of providing a scheduling method and a scheduling system combined with a PUCCH period, which can make full use of air interface spectrum resources.
In order to solve the technical problems, the invention adopts a technical scheme that: a scheduling method combining PUCCH periods is provided, which comprises the following steps: a base station configures a downlink scheduling period of UE according to the PUCCH period of the UE, wherein the downlink scheduling period is the same as the PUCCH period and lags behind the PUCCH period; when the base station finishes processing PUCCH feedback of the UE in the current PUCCH period, calculating the data volume needing to be scheduled in each downlink scheduling period according to downlink QoS; the base station executes downlink scheduling of the UE in a current downlink scheduling period lagging a current PUCCH period until the scheduling of the data volume is finished; the downlink scheduling period lags behind the PUCCH period and is the minimum time required by the base station for processing PUCCH feedback, the time unit is a subframe, and the downlink scheduling period comprises a plurality of subframes.
Preferably, the PUCCH period is consistent with downlink QoS of the UE.
Preferably, the subframe in which the base station starts to perform scheduling is a subframe next to a last subframe in which PUCCH feedback is processed.
Preferably, the base station completes all scheduling of the data amount in one or more subframes at the beginning of the current downlink scheduling period after the current downlink scheduling period arrives.
Preferably, the scheduling method further includes: and if the base station does not finish all scheduling of the data volume in the current downlink scheduling period, the data volume which is not scheduled in the current downlink scheduling period is counted into the data volume which needs to be scheduled in the next downlink scheduling period of the current downlink scheduling period.
In order to solve the technical problem, the invention adopts another technical scheme that: the scheduling system combined with the PUCCH cycle comprises a base station and UE, wherein the base station comprises a scheduling configuration module, a scheduling calculation module and a scheduling execution module: the scheduling configuration module is configured to configure a downlink scheduling period of the UE according to a PUCCH period of the UE, where the downlink scheduling period is the same as the PUCCH period and lags behind the PUCCH period; the scheduling calculation module is used for calculating the data volume needing to be scheduled in each downlink scheduling period according to downlink QoS when the base station finishes processing PUCCH feedback of the UE in the current PUCCH period; the scheduling execution module is used for executing the downlink scheduling of the UE in the current downlink scheduling period lagging the current PUCCH period until the scheduling of the data volume is completed; the downlink scheduling period lags behind the time of the PUCCH period and is the minimum time required by the base station for processing PUCCH feedback, the time unit is a subframe, and the downlink scheduling period comprises a plurality of subframes; and the UE is used for feeding back on PUCCH resources according to PUCCH periods.
Preferably, the PUCCH period is consistent with downlink QoS of the UE.
Preferably, the subframe in which the scheduling execution module starts to execute scheduling is a next subframe of a last subframe for processing PUCCH feedback.
Preferably, the scheduling execution module completes all scheduling of the data amount in one or more subframes at the beginning of the current downlink scheduling period after the current downlink scheduling period is reached.
Preferably, the scheduling calculation module is further configured to, when the base station in the current downlink scheduling period does not complete all scheduling of the data amount, count the data amount that the current downlink scheduling period does not complete scheduling into the data amount that needs to be scheduled in the next downlink scheduling period of the current downlink scheduling period.
Different from the prior art, the invention has the beneficial effects that: the quality of the air interface channel used by scheduling is very close to the quality of the air interface channel actually transmitted, so that the air interface spectrum support is fully utilized, the air interface spectrum resource can be fully utilized, air interface retransmission can be avoided to the greatest extent, and the user experience is improved.
Drawings
Fig. 1 is a flowchart illustrating a scheduling method combining PUCCH cycles according to an embodiment of the present invention.
Fig. 2 is a timing diagram of a downlink scheduling period and a PUCCH period in the method shown in fig. 1.
Fig. 3 is a schematic diagram of an architecture of a scheduling system incorporating PUCCH periods according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the scheduling method combining the PUCCH periods according to the embodiment of the present invention includes:
s1: and the base station configures a downlink scheduling period of the UE according to the PUCCH period of the UE, wherein the downlink scheduling period is the same as the PUCCH period and lags behind the PUCCH period.
The base station may send a corresponding configuration parameter in a Radio Resource Control (RRC) message to allocate a PUCCH Resource to the UE. The UE may perform feedback on PUCCH resources according to PUCCH periods, and the feedback includes, but is not limited to, CQI, PMI, SR, and ACK/NACK information.
As shown in fig. 2, the downlink scheduling period and the PUCCH period are the same, and both periods are T.
In this embodiment, the PUCCH period is consistent with the downlink QoS of the UE. Specifically, the PUCCH period may be implemented to be consistent with the downlink QoS requirement of the UE by using the prior art, that is, the PUCCH period is implemented to be associated with the QoS parameter of the UE by using the prior art.
S2: and when the base station finishes processing the PUCCH feedback of the UE in the current PUCCH period, calculating the data volume needing to be scheduled in each downlink scheduling period according to the downlink QoS.
For the base station, the UE with which the wireless link is established is an online UE, and the downlink QoS can be acquired through the wireless link. The downlink QoS can reflect the downlink transmission rate required by the service type of the UE, and the larger the downlink QoS is, the larger the downlink transmission rate is. In this embodiment, the downlink QoS at least includes gbr (guaranteed Bit rate) service.
S3: and the base station executes the downlink scheduling of the UE in the current downlink scheduling period lagging the current PUCCH period until the scheduling of the data volume is finished.
The downlink scheduling period lags behind the PUCCH period and is the minimum time required by the base station for processing PUCCH feedback, the time unit is a subframe, and the downlink scheduling period comprises a plurality of subframes. As shown in fig. 2, the downlink scheduling period includes a plurality of subframes TTI. Because the current downlink scheduling period is adjacent to the current PUCCH period in time, the channel quality of a downlink channel used by the UE is very close to the channel quality stored by the base station, the downlink scheduling can be ensured to be completed within the most effective time of the downlink channel measurement, the consistency of the downlink scheduling authorization and the downlink channel measurement is improved, and thus the air interface spectrum resources can be fully utilized.
In this embodiment, the subframe where the base station starts to perform scheduling is the next subframe of the last subframe to process PUCCH feedback. That is, the downlink scheduling period starting subframe of the UE is located after the last subframe of the PUCCH period where PUCCH feedback is processed.
Further, after the current downlink scheduling period is reached, the base station completes all scheduling of the data volume in one or more subframes at the beginning of the current downlink scheduling period.
Considering that, for some reasons, the scheduling of the entire data amount cannot be completed in the current downlink scheduling period, in this embodiment, the scheduling method further includes: and if the base station does not finish all scheduling of the data volume in the current downlink scheduling period, the data volume which is not finished to be scheduled in the current downlink scheduling period is counted into the data volume which needs to be scheduled in the next downlink scheduling period of the current downlink scheduling period.
Referring to fig. 3, the scheduling system combining the PUCCH periods according to the embodiment of the present invention includes a base station 10 and a UE20, where the base station 10 includes a scheduling configuration module 11, a scheduling calculation module 12, and a scheduling execution module 13.
The scheduling configuration module 11 is configured to configure a downlink scheduling period of the UE20 according to a PUCCH period of the UE20, where the downlink scheduling period is the same as the PUCCH period and lags behind the PUCCH period. In this embodiment, the PUCCH period is consistent with the downlink QoS of the UE. Specifically, the consistency between the PUCCH period and the downlink QoS requirement of the UE can be achieved by the prior art.
The scheduling calculation module 12 is configured to calculate, according to the downlink QoS, a data amount that needs to be scheduled in each downlink scheduling period when the base station 10 finishes processing the PUCCH feedback of the UE20 in the current PUCCH period. For the base station, the UE with which the radio link is established is an online UE, and the downlink QoS can be acquired through the radio link. The downlink QoS can reflect the downlink transmission rate required by the service type of the UE, and the larger the downlink QoS is, the larger the downlink transmission rate is. In this embodiment, the downlink QoS at least includes gbr (guaranteed Bit rate) service.
The scheduling execution module 13 is configured to execute downlink scheduling of the UE20 in a current downlink scheduling period lagging behind the current PUCCH period until the scheduling of the data amount is completed. The downlink scheduling period lags behind the PUCCH period and is the minimum time required by the base station for processing PUCCH feedback, the time unit is a subframe, and the downlink scheduling period comprises a plurality of subframes.
The downlink scheduling period lags behind the PUCCH period, which is the minimum time required for the base station 10 to process PUCCH feedback, and is a subframe, and the downlink scheduling period includes multiple subframes. Because the current downlink scheduling period is temporally adjacent to the current PUCCH period, the channel quality of the downlink channel used by the UE20 is very close to the channel quality stored by the base station 10, which can ensure that downlink scheduling is completed within the most effective time of downlink channel measurement, and improve the consistency of downlink scheduling authorization and downlink channel measurement, thereby making full use of the spectrum resource of the air interface.
The UE20 is configured to perform feedback on PUCCH resources according to PUCCH periods. The base station 10 may send a corresponding configuration parameter in a Radio Resource Control (RRC) message to allocate a PUCCH Resource to the UE20, where the UE20 performs feedback on the PUCCH Resource according to a PUCCH cycle, and the feedback includes but is not limited to CQI, PMI, SR, and ACK/NACK information.
In this embodiment, the subframe in which the base station 10 starts to perform scheduling is the next subframe to the last subframe in which PUCCH feedback is processed. That is, the downlink scheduling period starting subframe of the UE is located after the last subframe of the PUCCH period where PUCCH feedback is processed.
Further, the scheduling execution module 13 completes all scheduling of the data amount in one or more subframes at the beginning of the current downlink scheduling period after the current downlink scheduling period arrives.
Considering that for some reasons, the scheduling of all data amount cannot be completed in the current downlink scheduling period, in this embodiment, the scheduling calculation module 12 is further configured to, when the base station 10 in the current downlink scheduling period does not complete the scheduling of all data amount, count the data amount that the scheduling is not completed in the current downlink scheduling period into the data amount that needs to be scheduled in the next downlink scheduling period of the current downlink scheduling period.
Through the above manner, the scheduling method and system combining the PUCCH period in the embodiment of the invention can make full use of the air interface spectrum resource, can avoid air interface retransmission to the greatest extent, and improve user experience.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.

Claims (6)

1. A scheduling method combining PUCCH periods, comprising:
a base station configures a downlink scheduling period of UE according to the PUCCH period of the UE, wherein the downlink scheduling period is the same as the PUCCH period and lags behind the PUCCH period, and the PUCCH period is consistent with downlink QoS of the UE;
when the base station finishes processing PUCCH feedback of the UE in the current PUCCH period, calculating the data volume needing to be scheduled in each downlink scheduling period according to downlink QoS;
the base station executes downlink scheduling of the UE in a current downlink scheduling period lagging behind a current PUCCH period until the scheduling of data amount is completed, wherein a subframe in which the base station starts to execute the scheduling is a next subframe of a last subframe for processing PUCCH feedback;
the downlink scheduling period lags behind the PUCCH period and is the minimum time required by the base station for processing PUCCH feedback, the time unit is a subframe, and the downlink scheduling period comprises a plurality of subframes.
2. The scheduling method of claim 1, wherein the base station completes the entire scheduling of the data amount in one or more subframes at the beginning of the current downlink scheduling period after the current downlink scheduling period arrives.
3. The scheduling method of claim 1, further comprising:
and if the base station does not finish all scheduling of the data volume in the current downlink scheduling period, the data volume which is not scheduled in the current downlink scheduling period is counted into the data volume which needs to be scheduled in the next downlink scheduling period of the current downlink scheduling period.
4. A scheduling system combining PUCCH cycles comprises a base station and UE, wherein the base station comprises a scheduling configuration module, a scheduling calculation module and a scheduling execution module:
the scheduling configuration module is configured to configure a downlink scheduling period of the UE according to a PUCCH period of the UE, where the downlink scheduling period is the same as the PUCCH period, the downlink scheduling period lags behind the PUCCH period, and the PUCCH period is consistent with downlink QoS of the UE;
the scheduling calculation module is used for calculating the data volume needing to be scheduled in each downlink scheduling period according to downlink QoS when the base station finishes processing PUCCH feedback of the UE in the current PUCCH period;
the scheduling execution module is used for executing downlink scheduling of the UE in a current downlink scheduling period lagging behind a current PUCCH period until the scheduling of the data volume is completed, and the subframe in which the scheduling execution module starts to execute the scheduling is the next subframe of the last subframe for processing PUCCH feedback;
the downlink scheduling period lags behind the PUCCH period and is the minimum time required by the base station for processing PUCCH feedback, the time unit is a subframe, and the downlink scheduling period comprises a plurality of subframes;
and the UE is used for feeding back on PUCCH resources according to PUCCH periods.
5. The scheduling system of claim 4 wherein the scheduling execution module completes the entire scheduling of the data amount in one or more subframes at the beginning of the current downlink scheduling period after the current downlink scheduling period arrives.
6. The scheduling system of claim 4, wherein the scheduling calculation module is further configured to, when the base station in the current downlink scheduling period does not complete all scheduling of the data amount, count the data amount that is not scheduled in the current downlink scheduling period into the data amount that needs to be scheduled in the next downlink scheduling period of the current downlink scheduling period.
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