CN111935841B - UE scheduling method and device - Google Patents
UE scheduling method and device Download PDFInfo
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- CN111935841B CN111935841B CN201910335899.5A CN201910335899A CN111935841B CN 111935841 B CN111935841 B CN 111935841B CN 201910335899 A CN201910335899 A CN 201910335899A CN 111935841 B CN111935841 B CN 111935841B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
- H04W4/027—Services making use of location information using location based information parameters using movement velocity, acceleration information
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- 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
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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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
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
Abstract
The embodiment of the invention provides a method and a device for UE scheduling, wherein the method comprises the following steps: when the current UE is located in a physical cell, determining a sampling frequency offset value of the current UE in a preset period, and when the sampling frequency offset value is greater than a preset threshold, judging that the current UE is high-speed UE; when the current UE is high-speed UE, determining a weight factor corresponding to the sampling frequency offset value; and determining the scheduling priority corresponding to the current UE by adopting the weight factor, and scheduling the current UE according to the scheduling priority, thereby realizing the improvement of the cell uplink/downlink throughput rate in a high-speed mobile scene.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a method and an apparatus for scheduling a UE.
Background
The uplink/downlink frequency offset is used as an important factor influencing the uplink/downlink demodulation capacity, and simulation and external field measured data prove that: the larger the frequency offset, the lower the throughput under the same signal conditions. At present, a scheduling strategy with equal opportunity is adopted for uplink/downlink of a UE (User Equipment), that is, the frequency offset of the UE is not distinguished. When the UE is traveling faster, the receiving end of the uplink/downlink between the UE and the base station has doppler shift, and the frequency shift time domain curve of the UE exhibits cosine characteristics.
In a physical cell formed by a base station, when a plurality of UEs rapidly advance, Doppler frequency offsets of the UEs at different positions show the characteristic of alternating high and low frequencies, and the phenomenon of coexistence of the high frequency offsets and the low frequency offsets occurs at most of the time. Under the condition of more high frequency offset UE, if a scheduling strategy with equal opportunity is adopted, the average value of the uplink/downlink throughput rate of the cell is smaller.
Disclosure of Invention
In view of the above, the present invention is proposed to provide a method and apparatus for UE scheduling that overcomes or at least partially solves the above problems, comprising:
a method for UE scheduling is applied to base stations, each base station is provided with a physical cell, and the physical cells of a plurality of base stations form a logical cell, and the method comprises the following steps:
when the current UE is located in a physical cell, determining a sampling frequency offset value of the current UE in a preset period, and when the sampling frequency offset value is greater than a preset threshold, judging that the current UE is high-speed UE;
when the current UE is high-speed UE, determining a weight factor corresponding to the sampling frequency offset value;
and determining the scheduling priority corresponding to the current UE by adopting the weight factor, and scheduling the current UE according to the scheduling priority.
Optionally, when the current UE is located in a physical cell, the step of determining a sampling frequency offset value of the current UE in a preset period includes:
when the current UE is positioned in a physical cell, receiving an uplink signal sent by the current UE;
measuring a real-time frequency offset value corresponding to the uplink signal;
and averaging the real-time frequency offset value measured in the preset period to obtain a sampling frequency offset value.
Optionally, when the current UE is a high-speed UE, the step of determining the weighting factor corresponding to the sampling frequency offset value includes:
determining the type of the current UE according to the sampling frequency offset value;
when the current UE is the first high-speed UE, determining the weight grade corresponding to the sampling frequency offset value;
and determining a weight factor corresponding to the weight grade.
Optionally, the method further comprises:
when the current UE is the second high-speed UE, scheduling the current UE by adopting a preset scheduling priority; and the sampling frequency offset value of the second high-speed UE is greater than that of the first high-speed UE.
Optionally, the method further comprises:
when the sampling frequency offset value is smaller than a preset threshold, judging that the current UE is a low-speed UE;
and when the current UE is the low-speed UE, scheduling the current UE by adopting a preset scheduling priority.
Optionally, the step of scheduling the current UE according to the scheduling priority includes:
when receiving an uplink signal, processing the uplink signal by adopting the scheduling priority;
and when the downlink signal is sent, processing the downlink signal by adopting the scheduling priority.
An apparatus for UE scheduling, the apparatus comprising:
the sampling frequency offset value determining module is used for determining a sampling frequency offset value of the current UE;
the high-speed UE judging module is used for judging that the current UE is the high-speed UE;
the weight factor determining module is used for determining the weight factor of the high-speed UE;
a scheduling priority determining module, configured to determine a scheduling priority corresponding to the current UE according to the scheduling priority;
and the scheduling module is used for scheduling the current UE.
Optionally, the sampling frequency offset value determining module includes:
the uplink signal receiving submodule is used for receiving an uplink signal sent by the current UE;
the real-time frequency offset value measuring submodule is used for measuring a real-time frequency offset value corresponding to the uplink signal;
and the sampling frequency offset value processing submodule is used for carrying out average processing on the real-time frequency offset value measured in the preset period to obtain a sampling frequency offset value.
Optionally, the weighting factor determination module includes:
the UE type determining submodule is used for determining the type of the current UE according to the sampling frequency offset value;
the weight grade determining submodule is used for determining the weight grade corresponding to the sampling frequency offset value when the current UE is the first high-speed UE;
and the weight factor determining submodule is used for determining the weight factor corresponding to the weight grade.
Optionally, the method further comprises:
the second high-speed UE scheduling submodule is used for scheduling the current UE by adopting a preset scheduling priority when the current UE is the second high-speed UE; and the sampling frequency offset value of the second high-speed UE is greater than that of the first high-speed UE.
Optionally, the method further comprises:
and the low-speed UE scheduling submodule is used for scheduling the current UE by adopting a preset scheduling priority when the current UE is the low-speed UE.
Optionally, the method further comprises:
the uplink signal processing submodule is used for processing the uplink signal by adopting the scheduling priority when receiving the uplink signal;
and the downlink signal processing submodule is used for processing the downlink signal by adopting the scheduling priority when the downlink signal is sent.
The embodiment of the invention has the following advantages: in the embodiment of the invention, when the current UE is located in a physical cell, the sampling frequency offset value of the current UE in a preset period is determined, when the sampling frequency offset value is greater than a preset threshold, the current UE is judged to be high-speed UE, when the current UE is the high-speed UE, the weight factor corresponding to the sampling frequency offset value is determined, the scheduling priority corresponding to the current UE is determined by adopting the weight factor, and the current UE is scheduled according to the scheduling priority, so that the uplink/downlink throughput rate of the cell is improved in a high-speed mobile scene.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating steps of a method for scheduling a UE according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a logical cell according to an embodiment of the present invention;
FIG. 3 is a diagram of frequency offset versus antenna distance according to an embodiment of the present invention;
FIG. 4 is a Doppler shift plot according to an embodiment of the present invention;
FIG. 5 is a graph comparing frequency offset values at different positions according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an apparatus for scheduling a UE according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all 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 flowchart illustrating steps of a method for scheduling a UE according to an embodiment of the present invention is shown, where the method may be applied to a base station, each base station may have a physical cell, and physical cells of a plurality of base stations may constitute a logical cell, as shown in fig. 2, in a plurality of base stations deployed along a high-speed rail, each base station includes an antenna for transceiving signals, the antenna is installed at a top end of a derrick, and faces a direction of the rail to form a physical cell in a covered area, and the plurality of physical cells are connected in series to form the logical cell.
Specifically, the method can comprise the following steps:
in a high-speed rail scene, as shown in fig. 3, when a high-speed rail train passes through each physical cell, doppler frequency offset exists at the receiving end of an uplink/downlink between a UE in the train and an antenna, and a frequency offset time domain curve of each high-speed UE presents a cosine feature during the high-speed rail traveling (refer to a doppler frequency shift formula Δ f v f cos α/c, v is a moving speed of the high-speed UE, f is a frequency point where a wireless signal is located, α is an included angle between a radio wave direction and a moving direction, c is a light speed, and Δ f is a frequency offset result).
For example, a change trend curve of doppler frequency offset of a high-speed rail UE advancing at a constant speed in a pole holding process is illustrated. Assuming that the distance between the poles is 500m, the coverage distance of one pole is 500m, the coordinate of the starting position of the high-speed rail UE just entering the coverage area of the pole is 0 (the travel distance is 0), and the coordinate of the time when the high-speed rail UE leaves the coverage area of the pole is 500m (the travel distance is 0). Suppose that the UE keeps going forward at a uniform speed, the radio frequency is 1900MHz, and the radio speed is the speed of light.
As shown in fig. 4, as seen from the doppler shift graph, the farther the UE is from the pole position, the larger the absolute value of the frequency shift, the peak value of the frequency shift is close to the peak value of the doppler shift (α is close to 0 degree or 180 degrees, cos α is close to 1 or-1), and the absolute value of the frequency shift is the smallest at the position right below the pole and is close to 0 value (α is close to 90 degrees, cos α is close to 0).
The Doppler frequency offset of the UE at different positions in the high-speed rail has the characteristic of alternating high and low, and the coexistence of the high frequency offset and the low frequency offset can occur at most of the time. Referring to fig. 5, the length of a typical train of a high-speed rail is 400m, several typical positions are selected, one of the typical positions is a tail position, 150m, 250m and 400m (head positions) from the tail position are used as other 3 typical positions, and the frequency offsets of the several typical UEs at each moment are compared as the high-speed rail train passes through a holding distance.
The frequency deviation is a characteristic phenomenon in a frequency modulation wave, and refers to the deviation of a fixed frequency modulation wave frequency to two sides. The UE generates a frequency offset phenomenon under the condition of moving, and the faster the UE moves, the larger the frequency offset value is. And when the frequency offset is greater than a certain value, the UE is the high-speed UE.
When the UE is located in a physical cell, a sampling frequency offset value of the current UE in the preset period may be determined, and when the sampling frequency offset value in the period is greater than the threshold, the current UE may be determined to be a high-speed UE.
In an embodiment of the present invention, step 101 may include the following sub-steps:
substep 11, when the current UE is located in a physical cell, receiving an uplink signal sent by the current UE;
in a specific implementation, when a current UE is located in a physical cell covered by a base station, the current UE may send an uplink signal to the base station, and the base station may receive the uplink signal sent by the current UE.
Substep 12, measuring a real-time frequency offset value corresponding to the uplink signal;
in an LTE (Long Term Evolution ) system, after receiving an uplink signal, a base station measures the uplink signal of each subframe to obtain a frequency offset value, which is a real-time frequency offset value.
Specifically, the subframe is the minimum time division time domain unit of uplink and downlink transmission signals, the length is 1ms, the base station measures the frequency offset value through the signal transmitted by the UE in the uplink subframe, the UE can continuously transmit data signals through a plurality of uplink subframes or intermittently transmit the data signals, and the base station can measure a real-time frequency offset value for the signal of each uplink subframe (i.e. the ms).
And a substep 13 of averaging the real-time frequency offset values measured in the preset period to obtain a sampling frequency offset value.
Due to the large fluctuation of the real-time frequency offset value, errors occur. Therefore, setting a preset period, for example, 5ms, will count the real-time frequency offset values of all subframes within 5ms, 1 to 5 real-time frequency offset values also exist for 1 to 5 subframes, average the real-time frequency offset values measured within 5ms, and finally obtain a frequency offset result within 5ms, i.e., a sampling frequency offset value, and use the sampling frequency offset value as one of the consideration factors for calculating the scheduling priority of each UE.
In the specific implementation, the real-time frequency offset values measured in the preset period are counted and averaged, and the average value obtained by processing is used as the sampling frequency offset value.
in a specific implementation, a certain range of frequency offset values corresponding to the high-speed UE may be divided into multiple levels, each level corresponding to a weight factor, and when the current UE is the high-speed UE, the level of the sampling frequency offset value may be determined according to the size of the sampling frequency offset value, so as to obtain the corresponding weight factor.
In an embodiment of the present invention, step 102 may include the following sub-steps:
substep 21, determining the type of the current UE according to the sampling frequency offset value;
in a specific implementation, when the current UE is a high-speed UE, the type of the current UE may be determined according to the magnitude of the sampling frequency offset value, for example, the high-speed UE is divided into a high-speed UE with a high frequency offset and a high-speed UE with a low frequency offset according to the frequency offset value.
Substep 22, determining a weight grade corresponding to the sampling frequency offset value when the current UE is the first high-speed UE;
in a specific implementation, when the current UE is the first high-speed UE, that is, the low-frequency offset high-speed UE, the multiple weight classes are divided according to the frequency offset value, a certain frequency offset value range corresponds to one weight class, and the corresponding weight class can be determined according to the size of the sampling frequency offset value.
For example, the frequency offset range is approximately 0 to 500Hz, for example, the frequency offset is 0 to 100Hz, which is taken as the 1 st weight level, in a Band38(1900MHz) cell and within a vehicle speed of 300 kmph; 100-200 Hz is the 2 nd grade, and so on, 400-500 Hz is the 5 th weight grade. If the sampling frequency deviation value is higher or lower than the frequency deviation range, the processing is not carried out.
And a substep 23 of determining a weighting factor corresponding to said weighting level.
Due to the low selection order or large Block Error rate (BLER) of the UE with high frequency offset, the spectrum efficiency is low, and in contrast, the selection order or BLER of the UE with low frequency offset is significantly higher than that of the UE with high frequency offset.
Based on this, the weighting factor corresponding to each weighting level may be set in advance, and then the weighting factor corresponding to the weighting level may be determined.
For example, the frequency offset range is approximately 0 to 500Hz within a Band38(1900MHz) cell and a vehicle speed of 300kmph by taking 100Hz as a step, for example, the frequency offset is 0 to 100Hz as a 1 st weight level, and the weight factor is 1; 100-200 Hz is the 2 nd level, the weighting factor is 0.8, and so on, 400-500 Hz, the weighting factor is 0.2, (here the weighting factor is an example value, which is configurable). The larger the frequency offset, the smaller the weight factor, and thus, the weight of the high frequency offset UE can be set to be lower than the weight factor of the low frequency offset.
In an embodiment of the present invention, the method further includes the following sub-steps:
when the current UE is the second high-speed UE, scheduling the current UE by adopting a preset scheduling priority; and the sampling frequency offset value of the second high-speed UE is greater than that of the first high-speed UE.
In a specific implementation, a scheduling priority and a frequency offset value (e.g., 500Hz) may be preset, and if the sampling frequency offset value is greater than the preset frequency offset value, the current UE is the second high-speed UE, and the preset scheduling priority is used to schedule the current UE.
In a specific implementation, when the sampling frequency offset value is greater than that of the first high-speed UE, the current UE is the second high-speed UE, that is, the high-speed UE with high frequency offset, and the current UE is scheduled by using a preset scheduling priority.
And 103, determining the scheduling priority corresponding to the current UE by adopting the weight factor, and scheduling the current UE according to the scheduling priority.
In a specific implementation, the weight factor is brought into a calculation formula of the scheduling priority, the scheduling priority corresponding to the current UE is calculated, and the current UE can be scheduled according to the calculated scheduling priority.
In an embodiment of the present invention, step 103 may include the following sub-steps:
when receiving an uplink signal, processing the uplink signal by adopting the scheduling priority; and when the downlink signal is sent, processing the downlink signal by adopting the scheduling priority.
In the specific implementation, a base station receives a signal sent by UE, the current UE is low-frequency offset high-speed UE, and the signal is processed according to the scheduling priority calculated in the step; and the current UE is low-speed UE or high-frequency biased high-speed UE, and the current UE is scheduled by adopting a preset scheduling priority. And the base station sends signals to the UE, and the processing modes are consistent.
In an embodiment of the present invention, the method further includes the following sub-steps:
when the sampling frequency offset value is smaller than a preset threshold, judging that the current UE is a low-speed UE; and when the current UE is the low-speed UE, scheduling the current UE by adopting a preset scheduling priority.
In a specific implementation, a preset period (e.g., 5ms), a preset threshold, and a scheduling priority may be preset, when the UE is located in a physical cell, a sampling frequency offset value of the current UE in the preset period may be determined, and when the sampling frequency offset value in the period is smaller than the threshold, the current UE is a low-speed UE, and the preset scheduling priority is used to schedule the current UE.
In the embodiment of the invention, when the current UE is located in a physical cell, the sampling frequency offset value of the current UE in a preset period is determined, when the sampling frequency offset value is greater than a preset threshold, the current UE is judged to be high-speed UE, when the current UE is the high-speed UE, the weight factor corresponding to the sampling frequency offset value is determined, the scheduling priority corresponding to the current UE is determined by adopting the weight factor, and the current UE is scheduled according to the scheduling priority, so that the uplink/downlink throughput rate of the cell is improved in a high-speed mobile scene.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Referring to fig. 6, a schematic structural diagram of a UE scheduling apparatus according to an embodiment of the present invention is shown, which may specifically include the following modules:
a sampling frequency offset value determining module 601, configured to determine a sampling frequency offset value of a current UE;
a high-speed UE determining module 602, configured to determine that the current UE is a high-speed UE;
a weight factor determining module 603, configured to determine a weight factor of the high-speed UE;
a scheduling priority determining module 604, configured to determine a scheduling priority corresponding to the current UE according to the scheduling priority;
a scheduling module 605, configured to schedule the current UE.
In an embodiment of the present invention, the sampling frequency offset value determining module 601 includes:
the uplink signal receiving submodule is used for receiving an uplink signal sent by the current UE;
the real-time frequency offset value measuring submodule is used for measuring a real-time frequency offset value corresponding to the uplink signal;
and the sampling frequency offset value processing submodule is used for carrying out average processing on the real-time frequency offset value measured in the preset period to obtain a sampling frequency offset value.
In an embodiment of the present invention, the weighting factor determining module 603 includes:
the UE type determining submodule is used for determining the type of the current UE according to the sampling frequency offset value;
the weight grade determining submodule is used for determining the weight grade corresponding to the sampling frequency offset value when the current UE is the first high-speed UE;
and the weight factor determining submodule is used for determining the weight factor corresponding to the weight grade.
In an embodiment of the present invention, the method further includes:
the second high-speed UE scheduling submodule is used for scheduling the current UE by adopting a preset scheduling priority when the current UE is the second high-speed UE; and the sampling frequency offset value of the second high-speed UE is greater than that of the first high-speed UE.
In an embodiment of the present invention, the method further includes:
and the low-speed UE scheduling submodule is used for scheduling the current UE by adopting a preset scheduling priority when the current UE is the low-speed UE.
In an embodiment of the present invention, the method further includes:
the uplink signal processing submodule is used for processing the uplink signal by adopting the scheduling priority when receiving the uplink signal;
and the downlink signal processing submodule is used for processing the downlink signal by adopting the scheduling priority when the downlink signal is sent.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
An embodiment of the present invention also provides an electronic device, which may include a processor, a memory, and a computer program stored on the memory and capable of running on the processor, and when executed by the processor, the steps of the method for scheduling UE as above are implemented.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of the method for UE scheduling as above.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The method and apparatus for scheduling UE provided by the present invention are introduced in detail, and a specific example is applied in the text to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A method for UE scheduling, wherein the method is applied to base stations, each base station has a physical cell, and the physical cells of a plurality of base stations form a logical cell, the method comprising:
when the current UE is located in a physical cell, determining a sampling frequency offset value of the current UE in a preset period, and when the sampling frequency offset value is greater than a preset threshold, judging that the current UE is high-speed UE;
when the current UE is high-speed UE, determining a weight factor corresponding to the sampling frequency offset value;
determining a scheduling priority corresponding to the current UE by adopting the weight factor, and scheduling the current UE according to the scheduling priority;
when the current UE is located in a physical cell, the step of determining a sampling frequency offset value of the current UE in a preset period includes:
when the current UE is positioned in a physical cell, receiving an uplink signal sent by the current UE;
measuring a real-time frequency offset value corresponding to the uplink signal;
and averaging the real-time frequency offset value measured in the preset period to obtain a sampling frequency offset value.
2. The method of claim 1, wherein the step of determining the weighting factor corresponding to the sampling frequency offset value when the current UE is a high-speed UE comprises:
determining the type of the current UE according to the sampling frequency offset value;
when the current UE is the first high-speed UE, determining the weight grade corresponding to the sampling frequency offset value;
and determining a weight factor corresponding to the weight grade.
3. The method of claim 2, further comprising:
when the current UE is the second high-speed UE, scheduling the current UE by adopting a preset scheduling priority; and the sampling frequency offset value of the second high-speed UE is greater than that of the first high-speed UE.
4. The method of claim 1, further comprising:
when the sampling frequency offset value is smaller than a preset threshold, judging that the current UE is a low-speed UE;
and when the current UE is the low-speed UE, scheduling the current UE by adopting a preset scheduling priority.
5. The method of claim 1, wherein the step of scheduling the current UE according to the scheduling priority comprises:
when receiving an uplink signal, processing the uplink signal by adopting the scheduling priority;
and when the downlink signal is sent, processing the downlink signal by adopting the scheduling priority.
6. An apparatus for UE scheduling, the apparatus comprising:
the sampling frequency offset value determining module is used for determining a sampling frequency offset value of the current UE;
the sampling frequency offset value determining module comprises:
the uplink signal receiving submodule is used for receiving an uplink signal sent by the current UE;
the real-time frequency offset value measuring submodule is used for measuring a real-time frequency offset value corresponding to the uplink signal;
the sampling frequency offset value processing submodule is used for carrying out average processing on the real-time frequency offset value measured in a preset period to obtain a sampling frequency offset value;
the high-speed UE judging module is used for judging that the current UE is the high-speed UE;
the weight factor determining module is used for determining the weight factor of the high-speed UE;
a scheduling priority determining module, configured to determine a scheduling priority corresponding to the current UE according to the scheduling priority;
and the scheduling module is used for scheduling the current UE.
7. The apparatus of claim 6, wherein the weighting factor determination module comprises:
the UE type determining submodule is used for determining the type of the current UE according to the sampling frequency offset value;
the weight grade determining submodule is used for determining the weight grade corresponding to the sampling frequency offset value when the current UE is the first high-speed UE;
and the weight factor determining submodule is used for determining the weight factor corresponding to the weight grade.
8. The apparatus of claim 7, further comprising:
the second high-speed UE scheduling submodule is used for scheduling the current UE by adopting a preset scheduling priority when the current UE is the second high-speed UE; and the sampling frequency offset value of the second high-speed UE is greater than that of the first high-speed UE.
9. The apparatus of claim 6, further comprising:
and the low-speed UE scheduling submodule is used for scheduling the current UE by adopting a preset scheduling priority when the current UE is the low-speed UE.
10. The apparatus of claim 6, further comprising:
the uplink signal processing submodule is used for processing the uplink signal by adopting the scheduling priority when receiving the uplink signal;
and the downlink signal processing submodule is used for processing the downlink signal by adopting the scheduling priority when the downlink signal is sent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910335899.5A CN111935841B (en) | 2019-04-24 | 2019-04-24 | UE scheduling method and device |
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