CN111132323A - Pre-scheduling control method and device - Google Patents
Pre-scheduling control method and device Download PDFInfo
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- CN111132323A CN111132323A CN201811295000.3A CN201811295000A CN111132323A CN 111132323 A CN111132323 A CN 111132323A CN 201811295000 A CN201811295000 A CN 201811295000A CN 111132323 A CN111132323 A CN 111132323A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
Abstract
The embodiment of the invention provides a pre-scheduling control method and a device, wherein the method comprises the following steps: when the terminal meets the preset pre-scheduling condition, acquiring a current uplink Channel Quality Indication (CQI) value of the terminal, and determining the current uplink CQI value as the air interface quality of the terminal; judging whether the air interface quality of the terminal is greater than a preset threshold value or not; when the air interface quality of the terminal is greater than a preset threshold value, pre-scheduling the terminal; and when the air interface quality of the terminal is smaller than a preset threshold value, forbidding the terminal to be prescheduled. The embodiment of the invention realizes the consideration of pre-scheduling and IoT lifting.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for controlling pre-scheduling.
Background
In order to shorten service delay and improve user perception in the existing network, each manufacturer introduces an uplink pre-scheduling characteristic into a base station. The uplink pre-scheduling allocates certain resources to the terminal when whether the terminal has user uplink service data to be transmitted, so that the uplink scheduling request process is not required to be performed when the user has service data to be transmitted, and the time delay is saved. For example, for Internet Packet explorer (PING) services, PING latency can be reduced; for a single thread File Transfer Protocol (FTP) downloading service, the downloading rate can be improved; for the webpage browsing service, the time for opening the page can be shortened; for video services, the video buffering time can be shortened.
In addition, in order to meet the requirement of an operator on the evaluation index of webpage browsing or video delay, the pre-scheduling characteristic of the existing network is usually started. However, the pre-scheduling is started, and then Interference over thermal (IoT) in the neighboring cell is increased, so that a packet loss rate index and an average opinion Score (MOS) quality difference index of QCI1 in an operator assessment are affected, and voice service perception of a user in the neighboring cell is deteriorated to a certain extent.
Disclosure of Invention
The embodiment of the invention provides a pre-scheduling control method and device, and aims to solve the problem that pre-scheduling and IoT (Internet of things) lifting cannot be considered in the prior art.
In view of the foregoing problems, in a first aspect, an embodiment of the present invention provides a method for controlling pre-scheduling, where the method includes:
when the terminal meets the preset pre-scheduling condition, acquiring a current uplink Channel Quality Indication (CQI) value of the terminal, and determining the current uplink CQI value as the air interface quality of the terminal;
judging whether the air interface quality of the terminal is greater than a preset threshold value or not;
when the air interface quality of the terminal is greater than a preset threshold value, pre-scheduling the terminal;
and when the air interface quality of the terminal is smaller than a preset threshold value, forbidding the terminal to be prescheduled.
In a second aspect, an embodiment of the present invention provides a prescheduling control apparatus, where the apparatus includes:
the terminal comprises an acquisition module, a scheduling module and a scheduling module, wherein the acquisition module is used for acquiring a current uplink Channel Quality Indicator (CQI) value of the terminal when the terminal meets a preset pre-scheduling condition and determining the current uplink CQI value as the air interface quality of the terminal;
the judging module is used for judging whether the air interface quality of the terminal is greater than a preset threshold value; wherein the content of the first and second substances,
when the air interface quality of the terminal is greater than a preset threshold value, pre-scheduling the terminal;
and when the air interface quality of the terminal is smaller than a preset threshold value, forbidding the terminal to be prescheduled.
In a third aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the prescheduling control method when executing the computer program.
In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the pre-scheduling control method.
According to the pre-scheduling control method and device provided by the embodiment of the invention, when the terminal meets the preset pre-scheduling condition, the current uplink CQI value of the terminal is obtained, the current uplink CQI value is determined as the air interface quality of the terminal, whether the air interface quality of the terminal is greater than the preset threshold value or not is judged, and then when the air interface quality of the terminal is less than the preset threshold value, pre-scheduling of the terminal is forbidden, so that whether pre-scheduling is started or not is decided according to the air interface quality, the problem that IoT is obviously lifted when the pre-scheduling is directly started because the terminal with poor air interface quality meets the preset pre-scheduling condition is solved, and the pre-scheduling and IoT lifting are considered.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a flow chart illustrating the steps of a pre-scheduling control method according to an embodiment of the present invention;
FIG. 2 is a block diagram of a pre-scheduling control apparatus according to an embodiment of the present invention;
fig. 3 shows a block diagram of an electronic device in an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
As shown in fig. 1, which is a flowchart of steps of a pre-scheduling control method in an embodiment of the present invention, the method includes the following steps:
step 101: and when the terminal meets the preset pre-scheduling condition, acquiring a current uplink Channel Quality Indication (CQI) value of the terminal, and determining the current uplink CQI value as the air interface quality of the terminal.
In this step, specifically, the pre-scheduling condition may be that the terminal transmits the uplink scheduling request to the base station and receives a resource configured by the base station.
In addition, specifically, when the terminal meets the preset prescheduling condition, the prescheduling persistent timer may also be started, so that the time for the terminal to perform prescheduling continuously after the terminal has no user data transmission can be determined by the prescheduling persistent timer.
In addition, specifically, the IoT is lifted when the current network pre-scheduling is started, especially for the terminal with poor air interface quality located at the edge of the cell, and the IoT is lifted higher when the terminal with poor air interface quality located at the edge of the cell performs pre-scheduling (according to the field test data, IoT is lifted by 2db to 3db), so that the packet loss rate index and the MOS quality difference index of the QCI1 are deteriorated, and certain program deterioration is brought to the voice service perception of the user in the vicinity. In addition, the terminal with poor air interface quality at the edge of the cell is easy to retransmit, and the delay gain brought by pre-scheduling is obviously smaller than that of the terminal with good air interface quality. Therefore, in this embodiment, when it is detected that the terminal meets the preset pre-scheduling condition, the quality of the air interface of the terminal needs to be considered, so that a balance between pre-scheduling and effective control of IoT boost can be achieved.
Based on the above discussion, in this embodiment, when the terminal meets the preset pre-scheduling condition, the current uplink CQI value of the terminal may be obtained, and the current uplink CQI value is determined as the air interface quality of the terminal. Therefore, by acquiring the current uplink CIQ value of the terminal and determining the current uplink CQI value as the air interface quality of the terminal, whether the IoT is highly lifted when the terminal is prescheduled can be judged according to the air interface quality of the terminal, so that whether the terminal is prescheduled can be judged, whether the prescheduling is started or not and the control of the IoT lifting are comprehensively considered, and the effective control of the IoT lifting is realized.
Step 102: and judging whether the air interface quality of the terminal is greater than a preset threshold value.
In this step, specifically, after the air interface quality of the terminal is obtained, whether the terminal is pre-scheduled or not may be determined by judging whether the air interface quality of the terminal is greater than a preset threshold; when the air interface quality of the terminal is greater than a preset threshold value, pre-scheduling the terminal; and when the air interface quality of the terminal is smaller than a preset threshold value, forbidding the terminal to be prescheduled.
It should be noted that the preset threshold may be set according to actual situations, and a numerical value of the preset threshold is not limited herein.
Therefore, when the air interface quality of the terminal is greater than a preset threshold value, the terminal can be prescheduled, so that the terminal is prescheduled, the higher lifting of the IoT is avoided, and the consideration of both the prescheduling and the IoT lifting is realized. In addition, when a terminal with poor air interface quality is subjected to pre-scheduling, a lower delay gain and a higher IoT boost can be brought, and at this time, based on comprehensive consideration of service delay index requirements related to pre-scheduling and IoT boost, when the air interface quality of the terminal is smaller than a preset threshold, the terminal is prohibited from being subjected to pre-scheduling, so that effective control over the IoT boost is realized on the premise of considering the delay gain achieved by the pre-scheduling.
In this way, in this embodiment, when the terminal meets the preset pre-scheduling condition, the current uplink CQI value of the terminal is obtained, and the current uplink CQI value is determined as the air interface quality of the terminal, and when the air interface quality of the terminal is greater than the preset threshold, the terminal is pre-scheduled; when the air interface quality of the terminal is smaller than a preset threshold value, the terminal is forbidden to be prescheduled, whether the prescheduling is started or not is determined according to the air interface quality, the problem that IoT is obviously lifted when the prescheduling is directly started when the terminal with poor air interface quality meets the preset prescheduling condition is solved, and the prescheduling and the lifting of the IoT are considered.
Further, in this embodiment, when the current uplink channel quality indication CQI value of the terminal is obtained, the uplink CQI value of the terminal may be periodically measured, so as to obtain an uplink CQI measurement value in each measurement period.
Specifically, after the terminal accesses the base station, the physical layer of the base station measures the uplink CQI value and periodically reports the uplink CQI value to the medium access layer according to a preset measurement period, and at this time, the base station obtains an uplink CQI measurement value in each measurement period.
In addition, specifically, in order to ensure the accuracy of the current uplink CQI value, the current uplink CQI value may be determined in the following two cases.
First, when the current measurement period is the first measurement period, the uplink CQI measurement value in the first measurement period may be determined as the current uplink CQI value of the terminal.
Specifically, since the current uplink CQI value is determined as the air interface quality of the terminal, a preset threshold for determining the air interface quality of the terminal may be set as the preset CQI value.
And secondly, when the current measurement period is not the first measurement period, calculating to obtain the current uplink CQI value of the terminal in the current measurement period according to the uplink CQI measurement value in the current measurement period and the current uplink CQI value of the terminal in the last measurement period.
Specifically, when the current uplink CQI value of the terminal in the current measurement period is obtained through calculation according to the uplink CQI measurement value in the current measurement period and the current uplink CQI value of the terminal in the previous measurement period, the current uplink CQI value of the terminal in the current measurement period can be obtained through calculation according to the following formula;
c ═ a × C1+ (1-a) × C2; wherein the content of the first and second substances,
c represents the current uplink CQI value of the terminal in the current measuring period, a represents a preset proportional value, C1 represents the uplink CQI measured value in the current measuring period, and C2 represents the current uplink CQI value of the terminal in the last measuring period.
Of course, it should be noted that both the measurement period and the preset ratio value may be configured according to actual situations, and specific values of the measurement period and the preset ratio value are not specifically determined here.
Therefore, when the current measurement period is the first measurement period, the uplink CQI measurement value in the first measurement period is determined as the current uplink CQI value of the terminal, and when the current measurement period is not the first measurement period, the current uplink CQI value of the terminal is obtained through smooth calculation according to the uplink CQI measurement value in the current measurement period and the current uplink CQI value of the terminal in the last measurement period, so that the reliability and the accuracy of the obtained current uplink CQI value are ensured, the reliability and the accuracy of the obtained air interface quality of the terminal are ensured, and the judgment accuracy of judging whether the terminal is subjected to pre-scheduling or not according to the air interface quality is further ensured.
In this embodiment, when the terminal meets the preset pre-scheduling condition, whether the terminal is pre-scheduled is determined according to the quality of an air interface of the terminal, so that whether the pre-scheduling is started according to the quality decision of the air interface is realized, the problem that the IoT is significantly lifted when the pre-scheduling is directly started when the terminal with poor quality of the air interface meets the preset pre-scheduling condition is solved, and the pre-scheduling and the IoT are considered to be lifted.
In addition, as shown in fig. 2, a block diagram of a pre-scheduling control apparatus in an embodiment of the present invention is shown, where the apparatus includes:
an obtaining module 201, configured to obtain a current uplink channel quality indicator CQI value of a terminal when the terminal meets a preset pre-scheduling condition, and determine the current uplink CQI value as an air interface quality of the terminal;
a judging module 202, configured to judge whether an air interface quality of the terminal is greater than a preset threshold; wherein the content of the first and second substances,
when the air interface quality of the terminal is greater than a preset threshold value, pre-scheduling the terminal;
and when the air interface quality of the terminal is smaller than a preset threshold value, forbidding the terminal to be prescheduled.
Optionally, the obtaining module 201 includes:
the acquisition unit is used for periodically measuring the uplink CQI value of the terminal to obtain the uplink CQI measured value in each measurement period;
a first determining unit, configured to determine, when a current measurement period is a first measurement period, an uplink CQI measurement value in the first measurement period as a current uplink CQI value of a terminal;
and the second determining unit is used for calculating to obtain the current uplink CQI value of the terminal in the current measuring period according to the uplink CQI measured value in the current measuring period and the current uplink CQI value of the terminal in the last measuring period when the current measuring period is not the first measuring period.
Optionally, the second determining unit is configured to calculate, according to the uplink CQI measurement value in the current measurement period and the current uplink CQI value of the terminal in the previous measurement period, a current uplink CQI value of the terminal in the current measurement period through the following formula;
c ═ a × C1+ (1-a) × C2; wherein the content of the first and second substances,
c represents the current uplink CQI value of the terminal in the current measuring period, a represents a preset proportional value, C1 represents the uplink CQI measured value in the current measuring period, and C2 represents the current uplink CQI value of the terminal in the last measuring period.
The pre-scheduling control apparatus provided in this embodiment obtains a current uplink CQI value of a terminal when the terminal meets a preset pre-scheduling condition, determines the current uplink CQI value as an air interface quality of the terminal, and performs pre-scheduling on the terminal when the air interface quality of the terminal is greater than a preset threshold; when the air interface quality of the terminal is smaller than a preset threshold value, the terminal is forbidden to be prescheduled, whether the prescheduling is started or not is determined according to the air interface quality, the problem that IoT is obviously lifted when the prescheduling is directly started when the terminal with poor air interface quality meets the preset prescheduling condition is solved, and the prescheduling and the lifting of the IoT are considered.
It should be noted that, in the embodiment of the present invention, the related functional modules may be implemented by a hardware processor (hardware processor), and the same technical effect can be achieved, which is not described herein again.
In yet another embodiment of the present invention, an electronic device is provided, as shown in fig. 3, which includes a memory (memory)301, a processor (processor)302, and a computer program stored on the memory 301 and executable on the processor 302. The memory 301 and the processor 302 complete communication with each other through the bus 303. The processor 302 is configured to call program instructions in the memory 301 to perform the following method: when the terminal meets the preset pre-scheduling condition, acquiring a current uplink Channel Quality Indication (CQI) value of the terminal, and determining the current uplink CQI value as the air interface quality of the terminal; judging whether the air interface quality of the terminal is greater than a preset threshold value or not; when the air interface quality of the terminal is greater than a preset threshold value, pre-scheduling the terminal; and when the air interface quality of the terminal is smaller than a preset threshold value, forbidding the terminal to be prescheduled.
The electronic device provided by the embodiment of the invention can execute the specific steps in the pre-scheduling control method and can achieve the same technical effect, and the specific description is not provided herein.
Further, the program instructions in the memory 301 may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In a further embodiment of the invention, a non-transitory computer readable storage medium is provided, having stored thereon a computer program which, when executed by a processor, is operative to perform the method of: when the terminal meets a preset pre-scheduling condition, acquiring the air interface quality of the terminal; and judging whether to perform pre-scheduling on the terminal according to the air interface quality of the terminal.
The non-transitory computer-readable storage medium provided in the embodiment of the present invention may perform specific steps in the pre-scheduling control method, and may achieve the same technical effects, which will not be described in detail herein.
In yet another embodiment of the present invention, a computer program product is provided, the computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions that when executed by a computer perform the method of: when the terminal meets the preset pre-scheduling condition, acquiring a current uplink Channel Quality Indication (CQI) value of the terminal, and determining the current uplink CQI value as the air interface quality of the terminal; judging whether the air interface quality of the terminal is greater than a preset threshold value or not; when the air interface quality of the terminal is greater than a preset threshold value, pre-scheduling the terminal; and when the air interface quality of the terminal is smaller than a preset threshold value, forbidding the terminal to be prescheduled.
The computer program product provided by the embodiment of the invention can execute the specific steps in the pre-scheduling control method and can achieve the same technical effect, and the specific description is not provided herein.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A method for prescheduling control, the method comprising:
when the terminal meets the preset pre-scheduling condition, acquiring a current uplink Channel Quality Indication (CQI) value of the terminal, and determining the current uplink CQI value as the air interface quality of the terminal;
judging whether the air interface quality of the terminal is greater than a preset threshold value or not; wherein the content of the first and second substances,
when the air interface quality of the terminal is greater than a preset threshold value, pre-scheduling the terminal;
and when the air interface quality of the terminal is smaller than a preset threshold value, forbidding the terminal to be prescheduled.
2. The method of claim 1, wherein the obtaining a current uplink Channel Quality Indication (CQI) value of a terminal comprises:
periodically measuring an uplink CQI value of a terminal to obtain an uplink CQI measured value in each measurement period;
when the current measurement period is the first measurement period, determining the uplink CQI measurement value in the first measurement period as the current uplink CQI value of the terminal;
and when the current measurement period is not the first measurement period, calculating to obtain the current uplink CQI value of the terminal in the current measurement period according to the uplink CQI measurement value in the current measurement period and the current uplink CQI value of the terminal in the last measurement period.
3. The method according to claim 2, wherein the calculating a current uplink CQI value of the terminal in the current measurement period according to the uplink CQI measurement value in the current measurement period and the current uplink CQI value of the terminal in the previous measurement period includes:
according to the uplink CQI measured value in the current measuring period and the current uplink CQI value of the terminal in the last measuring period, calculating to obtain the current uplink CQI value of the terminal in the current measuring period through the following formula;
c ═ a × C1+ (1-a) × C2; wherein the content of the first and second substances,
c represents the current uplink CQI value of the terminal in the current measuring period, a represents a preset proportional value, C1 represents the uplink CQI measured value in the current measuring period, and C2 represents the current uplink CQI value of the terminal in the last measuring period.
4. A prescheduling control apparatus, characterized in that the apparatus comprises:
the terminal comprises an acquisition module, a scheduling module and a scheduling module, wherein the acquisition module is used for acquiring a current uplink Channel Quality Indicator (CQI) value of the terminal when the terminal meets a preset pre-scheduling condition and determining the current uplink CQI value as the air interface quality of the terminal;
the judging module is used for judging whether the air interface quality of the terminal is greater than a preset threshold value; wherein the content of the first and second substances,
when the air interface quality of the terminal is greater than a preset threshold value, pre-scheduling the terminal;
and when the air interface quality of the terminal is smaller than a preset threshold value, forbidding the terminal to be prescheduled.
5. The apparatus of claim 4, wherein the obtaining module comprises:
the acquisition unit is used for periodically measuring the uplink CQI value of the terminal to obtain the uplink CQI measured value in each measurement period;
a first determining unit, configured to determine, when a current measurement period is a first measurement period, an uplink CQI measurement value in the first measurement period as a current uplink CQI value of a terminal;
and the second determining unit is used for calculating to obtain the current uplink CQI value of the terminal in the current measuring period according to the uplink CQI measured value in the current measuring period and the current uplink CQI value of the terminal in the last measuring period when the current measuring period is not the first measuring period.
6. The apparatus of claim 5, wherein the second determining unit is configured to calculate, according to the uplink CQI measurement value in the current measurement period and the current uplink CQI value of the terminal in the previous measurement period, a current uplink CQI value of the terminal in the current measurement period through the following formula;
c ═ a × C1+ (1-a) × C2; wherein the content of the first and second substances,
c represents the current uplink CQI value of the terminal in the current measuring period, a represents a preset proportional value, C1 represents the uplink CQI measured value in the current measuring period, and C2 represents the current uplink CQI value of the terminal in the last measuring period.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the prescheduling control method according to any of claims 1 to 3 when executing the computer program.
8. A non-transitory computer readable storage medium, having stored thereon a computer program, characterized in that the computer program, when being executed by a processor, is adapted to carry out the steps of the prescheduling control method according to any of the claims 1 to 3.
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| CN102546111A (en) * | 2012-01-09 | 2012-07-04 | 大唐移动通信设备有限公司 | CQI (Channel Quality Indicator) determining method and device thereof |
| US20180146502A1 (en) * | 2015-05-14 | 2018-05-24 | Sharp Kabushiki Kaisha | Base station apparatus, terminal apparatus, and communication method |
| CN108235400A (en) * | 2016-12-12 | 2018-06-29 | 中国移动通信有限公司研究院 | A kind of dispatching method and base station |
| CN108633011A (en) * | 2017-03-21 | 2018-10-09 | 大唐移动通信设备有限公司 | A kind of method, base station and the terminal of pre-scheduling terminal |
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| CN102546111A (en) * | 2012-01-09 | 2012-07-04 | 大唐移动通信设备有限公司 | CQI (Channel Quality Indicator) determining method and device thereof |
| US20180146502A1 (en) * | 2015-05-14 | 2018-05-24 | Sharp Kabushiki Kaisha | Base station apparatus, terminal apparatus, and communication method |
| CN108235400A (en) * | 2016-12-12 | 2018-06-29 | 中国移动通信有限公司研究院 | A kind of dispatching method and base station |
| CN108633011A (en) * | 2017-03-21 | 2018-10-09 | 大唐移动通信设备有限公司 | A kind of method, base station and the terminal of pre-scheduling terminal |
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