CN110213831B - Scheduling method and system combining SRS period - Google Patents

Scheduling method and system combining SRS period Download PDF

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CN110213831B
CN110213831B CN201910456055.6A CN201910456055A CN110213831B CN 110213831 B CN110213831 B CN 110213831B CN 201910456055 A CN201910456055 A CN 201910456055A CN 110213831 B CN110213831 B CN 110213831B
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period
scheduling
srs
uplink scheduling
uplink
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CN110213831A (en
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卜智勇
谌晓清
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Shanghai Hanxun Information Technology 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
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • 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
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows

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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 scheduling method and a system combining an SRS period, wherein the method comprises the following steps: a base station configures an uplink scheduling period of UE according to the SRS period of the UE, wherein the uplink scheduling period is the same as the SRS period and lags behind the SRS period; when the base station finishes measuring the SRS signal of the UE in the current SRS period, calculating the data volume needing to be scheduled in each uplink scheduling period according to the uplink QoS; the base station executes the uplink scheduling of the UE in the current uplink scheduling period lagging the current SRS period until the scheduling of the data volume is finished; the uplink scheduling period lags behind the SRS period and is the minimum time required by the base station to measure the SRS signal, the time unit is a subframe, and the uplink 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 combined with SRS period
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a scheduling method and system combining SRS periods.
Background
In the conventional LTE communication system, a UE (User Equipment) periodically transmits an SRS signal to measure parameters such as channel quality of an uplink channel, and a base station measures the SRS signal transmitted by the UE.
When the base station performs uplink scheduling authorization, the base station performs uplink scheduling authorization on the UE according to the QoS (Quality of Service) of the UE and the measured SRS signal. 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 the channel in use can never be used for transmission. 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 uplink scheduling authorization method only considers the QoS requirement, does not consider the accuracy of the SRS signal transmitted by the UE, and does not consider the transmission period of the SRS signal, which 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 an SRS 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 and system combined with an SRS period are provided, which comprises the following steps: a base station configures an uplink scheduling period of UE according to the SRS period of the UE, wherein the uplink scheduling period is the same as the SRS period and lags behind the SRS period; when the base station finishes measuring the SRS signal of the UE in the current SRS period, calculating the data volume needing to be scheduled in each uplink scheduling period according to uplink QoS; the base station executes uplink scheduling of the UE in a current uplink scheduling period lagging behind a current SRS period until the scheduling of the data volume is finished; the uplink scheduling period lags behind the SRS period and is the minimum time required by the base station for measuring the SRS signal, the time unit is a subframe, and the uplink scheduling period comprises a plurality of subframes.
Preferably, the SRS period is consistent with the uplink QoS of the UE.
Preferably, the subframe in which the base station starts to perform scheduling is a subframe next to a subframe of a last measured SRS signal.
Preferably, the base station completes all scheduling of the data amount in one or more subframes at the beginning of the current uplink scheduling period after the current uplink 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 uplink scheduling period, counting the data volume which is not scheduled in the current uplink scheduling period into the data volume which needs to be scheduled in the next uplink scheduling period of the current uplink scheduling period.
In order to solve the technical problem, the invention adopts another technical scheme that: the scheduling system combined with the SRS period 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 an uplink scheduling period of the UE according to an SRS period of the UE, where the uplink scheduling period is the same as the SRS period and lags behind the SRS period; the scheduling calculation module is used for calculating the data volume needing to be scheduled in each uplink scheduling period according to the uplink QoS when the base station finishes measuring the SRS signal of the UE in the current SRS period; the scheduling executing module is used for executing uplink scheduling of the UE in a current uplink scheduling period lagging behind the current SRS period until the scheduling of the data volume is completed; the uplink scheduling period lags behind the SRS period and is the minimum time required by the base station for measuring the SRS signal, the time unit is a subframe, and the uplink scheduling period comprises a plurality of subframes; and the UE is used for transmitting SRS signals on the SRS resources according to the SRS period.
Preferably, the SRS period is consistent with the uplink QoS of the UE.
Preferably, the subframe where the base station starts to perform scheduling is a subframe next to a subframe of a last measured SRS signal.
Preferably, the scheduling execution module is specifically configured to complete all scheduling of the data amount in one or more subframes at the start of the current uplink scheduling period after the current uplink scheduling period arrives.
Preferably, the scheduling calculation module is further configured to count the amount of data whose scheduling is not completed in the current uplink scheduling period into the amount of data to be scheduled in the next uplink scheduling period of the current uplink 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 combined with an SRS period according to an embodiment of the present invention.
Fig. 2 is a timing diagram of an uplink scheduling period and an SRS period in the method shown in fig. 1.
Fig. 3 is a schematic structural diagram of a scheduling system incorporating an SRS period 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, a scheduling method combining an SRS period according to an embodiment of the present invention includes:
s1: and the base station configures an uplink scheduling period of the UE according to the SRS period of the UE, wherein the uplink scheduling period is the same as the SRS period, and the uplink scheduling period lags behind the SRS period.
The RRC message is used to instruct the UE to perform a Radio Resource Control (RRC) connection reconfiguration process, the base station may send a corresponding configuration parameter in the RRC message to allocate an SRS Resource to the UE, and the UE may send an SRS signal on the SRS Resource according to an SRS period.
As shown in fig. 2, the uplink scheduling period and the SRS period are the same, and both periods are T.
In this embodiment, the SRS period is consistent with the uplink QoS of the UE. Specifically, the SRS period can be consistent with the uplink QoS requirement of the UE by using the prior art, that is, the SRS period is associated with the QoS parameter of the UE by using the prior art.
S2: and when the base station finishes measuring the SRS signal of the UE in the current SRS period, calculating the data volume needing to be scheduled in each uplink scheduling period according to the uplink QoS.
For the base station, the UE with which the radio link is established is an online UE, and the uplink QoS can be acquired through the radio link. The uplink QoS can reflect the uplink transmission rate required by the service type, and the larger the uplink QoS is, the larger the uplink transmission rate is.
S3: and the base station executes the uplink scheduling of the UE in the current uplink scheduling period lagging the current SRS period until the scheduling of the data volume is finished.
The uplink scheduling period lags behind the SRS period and is the minimum time required by the base station to measure the SRS signal, the time unit is a subframe, and the uplink scheduling period comprises a plurality of subframes. As shown in fig. 2, the uplink scheduling period includes a plurality of subframe TTIs. Because the current uplink scheduling period is adjacent to the current SRS period in time, the channel quality of the uplink channel used by the UE is very close to the channel quality stored by the base station, the uplink scheduling can be finished within the most effective time of the uplink channel measurement, the consistency of the uplink scheduling authorization and the uplink 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 a subframe of uplink scheduling next to the subframe of the last measured SRS signal. That is, the uplink scheduling period starting subframe of the UE is located after the last subframe of the SRS period where the SRS signal is measured.
Further, after the current uplink scheduling period arrives, the base station completes all scheduling of the data volume in one or more subframes at the beginning of the current uplink scheduling period.
Considering that, for some reasons, scheduling of the entire amount of data cannot be completed in the current uplink scheduling period, in order to complete the entire scheduling, in this embodiment, the scheduling method further includes: and if the base station does not complete all scheduling of the data volume in the current uplink scheduling period, the data volume of which the scheduling is not completed in the current uplink scheduling period is counted into the data volume needing to be scheduled in the next uplink scheduling period of the current uplink scheduling period.
Referring to fig. 2, the scheduling system combining the SRS period 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 an uplink scheduling period of the UE20 according to an SRS period of the UE20, where the uplink scheduling period is the same as the SRS period and lags behind the SRS period. In this embodiment, the SRS period is consistent with the uplink QoS of the UE. Specifically, the SRS period can be consistent with the uplink QoS requirement of the UE by using the prior art, that is, the SRS period is associated with the QoS parameter of the UE by using the prior art.
The scheduling calculation module 12 is configured to calculate, according to the uplink QoS, a data amount that needs to be scheduled in each uplink scheduling period when the base station finishes measuring the SRS signal of the UE20 in the current SRS period. Among them, the UE20 with which the base station 10 establishes a wireless link is an online UE, and uplink QoS can be acquired through the wireless link. The uplink QoS can reflect the uplink transmission rate required by the service type, and the larger the uplink QoS is, the larger the uplink transmission rate is.
The scheduling execution module 13 is configured to execute the uplink scheduling of the UE20 in the current uplink scheduling period lagging behind the current SRS period until the scheduling of the data amount is completed. The uplink scheduling period lags behind the SRS period, which is the minimum time required for the base station 10 to measure the SRS signal, the time unit is a subframe, and the uplink scheduling period includes a plurality of subframes. Because the current uplink scheduling period is adjacent to the current SRS period in time, the channel quality of the uplink channel used by the UE20 is very close to the channel quality stored by the base station, which can ensure that uplink scheduling is completed within the most effective time of uplink channel measurement, and improve the consistency of uplink scheduling authorization and uplink channel measurement, thereby making full use of air interface spectrum resources.
The UE20 is configured to transmit SRS signals in SRS periods on SRS resources. The RRC message is used to instruct the UE20 to perform a RRC (Radio Resource Control) connection reconfiguration process, the base station 10 may send a corresponding configuration parameter in the RRC message to allocate an SRS Resource to the UE20, and the UE20 may send an SRS signal on the SRS Resource according to an SRS period.
In this embodiment, the subframe in which the base station 10 starts to perform scheduling is the next subframe to the subframe of the last measured SRS signal. That is, the uplink scheduling period starting subframe of the UE20 is located after the last subframe of the measured SRS signal of the SRS period.
Further, the scheduling executing module 13 is specifically configured to complete all scheduling of the data amount in one or more subframes at the beginning of the current uplink scheduling period after the current uplink scheduling period arrives.
Considering that, for some reasons, the scheduling of all data amounts cannot be completed in the current uplink scheduling period, in order to complete all scheduling, in this embodiment, the scheduling calculation module 12 is further configured to not complete all scheduling of data amounts in the current uplink scheduling period, and count the data amount of which scheduling is not completed in the current uplink scheduling period into the data amount that needs to be scheduled in the next uplink scheduling period of the current uplink scheduling period.
Through the above manner, the scheduling method and system combined with the SRS period according to the embodiment of the present invention can make full use of the air interface spectrum resource, avoid air interface retransmission to the greatest extent, and improve user experience.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, 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 combined with an SRS period is characterized by comprising the following steps:
a base station configures an uplink scheduling period of UE according to the SRS period of the UE, wherein the uplink scheduling period is the same as the SRS period, the uplink scheduling period lags behind the SRS period, and the SRS period is consistent with the uplink QoS of the UE;
when the base station finishes measuring the SRS signal of the UE in the current SRS period, calculating the data volume needing to be scheduled in each uplink scheduling period according to uplink QoS;
the base station executes uplink scheduling of the UE in a current uplink scheduling period lagging behind a current SRS period until the scheduling of data volume is finished, wherein a subframe in which the base station starts to execute scheduling is a subframe of next uplink scheduling of a last subframe for measuring SRS signals;
the uplink scheduling period lags behind the SRS period and is the minimum time required by the base station for measuring the SRS signal, the time unit is a subframe, and the uplink 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 uplink scheduling period after the current uplink 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 uplink scheduling period, counting the data volume which is not scheduled in the current uplink scheduling period into the data volume which needs to be scheduled in the next uplink scheduling period of the current uplink scheduling period.
4. The scheduling system combined with the SRS period is characterized by comprising 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 an uplink scheduling period of the UE according to the SRS period of the UE, where the uplink scheduling period is the same as the SRS period, the uplink scheduling period lags behind the SRS period, and the SRS period is consistent with an uplink QoS of the UE;
the scheduling calculation module is used for calculating the data volume needing to be scheduled in each uplink scheduling period according to the uplink QoS when the base station finishes measuring the SRS signal of the UE in the current SRS period;
the scheduling execution module is used for executing uplink scheduling of the UE in a current uplink scheduling period lagging behind a current SRS period until the scheduling of data volume is completed, and a subframe in which the base station starts to execute scheduling is a subframe next to a subframe of a last SRS signal measurement;
the uplink scheduling period lags behind the SRS period and is the minimum time required by the base station for measuring the SRS signal, the time unit is a subframe, and the uplink scheduling period comprises a plurality of subframes;
and the UE is used for transmitting SRS signals on the SRS resources according to the SRS period.
5. The scheduling system of claim 4 wherein the scheduling execution module is specifically configured to complete the entire scheduling of the data amount in one or more subframes at the beginning of the current uplink scheduling period after the current uplink scheduling period arrives.
6. The scheduling system of claim 4, wherein the scheduling calculation module is further configured to count the amount of data that is not scheduled in the current uplink scheduling period into the amount of data that needs to be scheduled in the next uplink scheduling period of the current uplink scheduling period, when the scheduling of the amount of data is not completed in the current uplink scheduling period.
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