CN114126051A

CN114126051A - Resource allocation method and network equipment

Info

Publication number: CN114126051A
Application number: CN202010877778.6A
Authority: CN
Inventors: 应晖
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2022-03-01

Abstract

The application provides a resource allocation method and network equipment. The method comprises the following steps: receiving a signal sent by a terminal, and measuring uplink frequency offset of the terminal; identifying whether the terminal is a low-speed terminal or not according to the uplink frequency offset of the terminal; and if the terminal is a low-speed terminal, setting an upper limit of the number of the allocable time-frequency resources for the terminal, so that the number of the allocable time-frequency resources of each subframe of the terminal does not exceed the upper limit.

Description

Resource allocation method and network equipment

Technical Field

The present application relates to the field of wireless communication technologies, and in particular, to a resource allocation method and a network device.

Background

Under the scene of a high-speed train, when the high-speed train passes through rural towns or urban areas along a railway, the coverage area of a physical cell where the high-speed train is located is overlapped with a public network, a low-speed terminal on the ground can be accessed into the physical cell, and the low-speed terminal in a connection state can continuously occupy time-frequency resources of the physical cell. When the high-speed train passes through the physical cell, the low-speed terminal on the ground and the high-speed terminal in the high-speed train use the time-frequency resources in the physical cell together, so that the allocable time-frequency resources of the high-speed terminal in the high-speed train are reduced, and the experience of a high-speed train user is poor.

Therefore, it is desirable to provide a resource allocation method for limiting the time-frequency resources that can be allocated to the low-speed terminal.

Disclosure of Invention

The embodiment of the application provides a resource allocation method and network equipment, which are used for limiting time-frequency resources which can be allocated to a low-speed terminal.

In a first aspect, an embodiment of the present application provides a resource allocation method, including:

receiving a signal sent by a terminal, and measuring uplink frequency offset of the terminal;

identifying whether the terminal is a low-speed terminal or not according to the uplink frequency offset of the terminal;

and if the terminal is a low-speed terminal, setting an upper limit of the number of the allocable time-frequency resources for the terminal, so that the number of the allocable time-frequency resources of each subframe of the terminal does not exceed the upper limit.

In some embodiments of the present application, the identifying whether the terminal is a low-speed terminal according to the uplink frequency offset of the terminal includes:

determining the mean value of the absolute values of the uplink frequency offsets of the terminal in each measurement period according to the set measurement period;

and identifying whether the terminal is a low-speed terminal or not according to the mean value of the absolute values of the uplink frequency offsets of the terminal in each measurement period in a judgment period, wherein one judgment period comprises at least one measurement period.

In some embodiments of the present application, the determining, according to a set measurement period, a mean value of absolute values of uplink frequency offsets of the terminal in each measurement period includes:

determining the number of measurement results of the uplink frequency offset of the terminal in a first measurement period, wherein the first measurement period is any measurement period in the decision period;

if the number of the measurement results of the uplink frequency offset in the first measurement period is greater than a first threshold, judging that the first measurement period is an effective measurement period, and determining the average value of the absolute values of the uplink frequency offset of the terminal in the first measurement period, otherwise, judging that the first measurement period is an ineffective measurement period;

the identifying whether the terminal is a low-speed terminal according to the mean value of the absolute values of the uplink frequency offsets of the terminal in each measurement period in the decision period includes:

and identifying whether the terminal is a low-speed terminal or not according to the mean value of the absolute values of the uplink frequency offsets of the terminal in each effective measurement period in the judgment period.

In some embodiments of the present application, identifying whether the terminal is a low-speed terminal according to a mean of absolute values of uplink frequency offsets of the terminal in each effective measurement period in a decision period includes:

if the number of the effective measurement periods in the decision period is larger than a second threshold, determining whether the mean values of the uplink frequency offset absolute values of the terminal in each effective measurement period in the decision period are all smaller than a third threshold;

and if the mean value of the absolute values of the uplink frequency offsets of the terminal in each effective measurement period in the judgment period is smaller than a third threshold, identifying the terminal as a low-speed terminal.

In some embodiments of the present application, identifying whether the terminal is a low-speed terminal according to a mean of absolute values of uplink frequency offsets of the terminal in each effective measurement period in a decision period further includes:

if the number of the effective measurement periods in the judgment period is less than or equal to the second threshold, identifying the terminal as a high-speed terminal; or, if the number of effective measurement periods included in the decision period is greater than the second threshold, and the mean value of the absolute values of the uplink frequency offsets of the terminal in at least one effective measurement period in the decision period is greater than or equal to the third threshold, identifying that the terminal is a high-speed terminal.

In some embodiments of the present application, the setting an upper limit of the number of allocable time-frequency resources for the terminal, so that the number of allocable video resources per subframe of the terminal does not exceed the upper limit, includes:

and setting an upper limit of the number of the Physical Resource Blocks (PRBs) which can be allocated for the terminal, so that the number of the PRBs which can be allocated by the terminal in each subframe does not exceed the upper limit.

In a second aspect, an embodiment of the present application provides a network device, including: the device comprises a processor, a memory and a transceiver;

the transceiver receives and transmits data under the control of the processor;

the memory storing computer instructions;

the processor is used for reading the computer instructions and executing the following operations:

In a third aspect, an embodiment of the present application provides a network device, including:

the receiving module is used for receiving signals sent by the terminal;

the measuring module is used for measuring the uplink frequency offset of the terminal;

the judging module is used for identifying whether the terminal is a low-speed terminal according to the uplink frequency offset of the terminal;

and the resource allocation module is used for setting an upper limit of the number of the allocable time-frequency resources for the low-speed terminal, so that the number of the allocable time-frequency resources of each subframe of the low-speed terminal does not exceed the upper limit.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having stored thereon computer-executable instructions for causing the computer to perform the method according to any one of the first aspect.

In the embodiment of the application, the uplink frequency offset of the terminal is obtained by measuring a signal sent by the terminal, whether the terminal is a low-speed terminal is identified according to the uplink frequency offset of the terminal, and if the terminal is the low-speed terminal, an upper limit of the number of allocable time-frequency resources is set for the terminal, so that the number of the allocable time-frequency resources of the terminal in each subframe does not exceed the upper limit, and the number of the allocable time-frequency resources of the low-speed terminal is limited.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 illustrates a cell coverage area diagram provided in an embodiment of the present application;

fig. 2a is a schematic diagram illustrating a process of passing through a physical cell according to an embodiment of the present application;

fig. 2b is a graph illustrating a frequency variation of a high-speed terminal passing through a physical cell according to an embodiment of the present application;

fig. 2c is a graph illustrating a frequency variation of multiple high-speed terminals passing through a physical cell according to an embodiment of the present application;

fig. 2d is a schematic diagram illustrating the determination of a low-speed terminal provided by the embodiment of the present application;

fig. 3 is a flowchart illustrating a resource allocation method provided by an embodiment of the present application;

fig. 4 is a flowchart illustrating a method for determining a low-speed terminal according to an embodiment of the present application;

fig. 5 is a functional block diagram illustrating a network device according to an embodiment of the present application;

fig. 6 illustrates a hardware structure diagram of a network device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

The terms "first", "second" are used only for distinguishing between descriptions and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of embodiments of the application, "at least one" means one or more unless stated otherwise.

Some terms in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

(1) In the embodiments of the present application, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand the meaning.

(2) In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

(3) "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

(4) The network side device is a device for providing a wireless communication function for the terminal, and includes but is not limited to: a gbb in 5G, a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved node B or home node B, HNB), a BaseBand Unit (BBU), a transmission point (TRP), a Transmission Point (TP), a mobile switching center (msc), and the like. The base station in the present application may also be a device that provides a terminal with a wireless communication function in other communication systems that may appear in the future.

(5) A terminal is a device that can provide voice and/or data connectivity to a user. For example, the terminal device includes a handheld device, an in-vehicle device, and the like having a wireless connection function. Currently, the terminal device may be: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving (self-driving), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), or a wireless terminal in smart home (smart home), etc.

The magnitude of the uplink frequency offset of the terminal is related to the moving speed of the terminal relative to the base station. In the embodiment of the disclosure, the terminal may be divided into a high-speed terminal and a low-speed terminal according to the uplink frequency offset of the terminal. Compared with the low-speed terminal, the high-speed terminal has a larger uplink frequency offset and a faster moving speed.

For example, a terminal moving at a speed of 250 kilometers per hour (kmph) or more may have an uplink frequency offset greater than a certain value, and in this case, the terminal may be referred to as a high-speed terminal, such as a vehicle-mounted terminal on a high-speed train traveling at a speed of up to 250 kmph. A terminal moving at a speed lower than 60(kmph) may have an uplink frequency offset smaller than a certain value, and in this case, the terminal may be referred to as a low-speed terminal. In a high speed train environment, the low speed terminals are also referred to as ground terminals.

Statistical data show that the uplink selection order of a high-speed terminal is low or the block error rate (BLER) is high, the spectrum efficiency is low, and the spectrum efficiency of a low-speed terminal is high, so that the high-speed terminal can maintain a good sensing rate only when being allocated with more wireless scheduling resources. In a high-speed train scene, the scheduling of uplink/downlink wireless resources in a physical cell adopts a strategy of equal opportunity, a high-speed terminal and a low-speed terminal are not distinguished, and when the access quantity and the service demand of the low-speed terminal are more, a large amount of time-frequency resources of the physical cell are occupied, so that the perception of a user of the high-speed terminal is poorer.

The frequency offset efficiency is affected by the wireless environment, and the promotion space is limited. In order to solve the above problem, in the embodiments of the present application, an upper limit of allocable time-frequency resources is set for the low-speed terminal, so that the number of the allocable time-frequency resources of each subframe of the low-speed terminal does not exceed the upper limit, and thus the time-frequency resources allocated to the high-speed terminal are promoted by reducing the allocable time-frequency resources of the low-speed terminal, and further the perception of the high-speed terminal user is promoted.

Because the high-speed terminal and the low-speed terminal have obvious moving speed difference, the moving speed difference can be embodied by Doppler frequency offset characteristic difference in a wireless network, and the frequency offset measurement technology can measure frequency offset in real time in each subframe, thereby ensuring that a sufficient number of frequency offset measurement results can be obtained in a certain measurement period. Therefore, the high-speed terminal and the low-speed terminal can be identified according to the measured uplink frequency offset of the terminal and according to the Doppler frequency offset characteristic.

Embodiments of the present application are described in detail below with a high-speed terminal in a high-speed train scenario as an example.

Fig. 1 illustrates a cell coverage area diagram provided in an embodiment of the present application. As shown in the figure, in a high-speed train scenario, an antenna is installed at the top end of a derrick, a physical cell is formed in an area where a rail is covered, a plurality of physical cells are connected in series to form a logical cell, for example, 3 physical cells are connected in series to form 1 logical cell.

Fig. 2a is a schematic diagram illustrating a process of passing through a physical cell according to an embodiment of the present application. As shown in the figure, the height of each holding pole is 50 meters, the distance between the holding poles is 500 meters, that is, the coverage distance of one physical cell is 500 meters, the coordinate of the starting position of the head of the high-speed train just entering the coverage area of the physical cell is 0 (the travel distance is 0 meter), and the coordinate of the position of the tail of the high-speed train just leaving the coverage area of the physical cell is 500 (the travel distance is 500 meters). When the high-speed train passes through the physical cell, the uplink/downlink signal between the terminal (high-speed terminal) in the high-speed train and the antenna has a doppler frequency offset characteristic, and it can be known from a doppler frequency offset formula Δ f (v x f cos α)/c that the high-speed train keeps a constant speed during the traveling process, and a time domain curve of the frequency offset of one terminal in the high-speed train shows a cosine characteristic, as shown in fig. 2 b. Where v is the traveling speed of the high-speed train, that is, the moving speed of the high-speed terminal, v is 300kmph, f is the frequency point where the radio signal (radio wave) is located, f is 1900 megahertz (MHz), α is the angle between the radio wave direction and the moving direction of the high-speed train, 0 ° < α <180 °, c is the radio wave speed, c is 3 × 10^8 meters/second (m/s), and Δ f is the frequency offset result.

As can be seen from the doppler frequency offset formula, the frequency offset Δ f is positively correlated with the moving speed v of the terminal, i.e., the higher the moving speed of the terminal is, the higher the peak value of the frequency offset curve is, and the slower the terminal moves, the lower the peak value of the frequency offset curve is.

Fig. 2c is a graph illustrating a frequency variation of multiple high-speed terminals passing through a physical cell according to an embodiment of the present application. As shown in the figure, the high-speed trains are classified into a first-stage high-speed train, a second-stage high-speed train and a third-stage high-speed train according to the moving speed of the high-speed train. The moving speed of the first-stage high-speed train is 350kmph, the moving speed of the second-stage high-speed train is 300kmph, and the moving speed of the third-stage high-speed train is 250kmphFrequency offset curve of high-speed terminal in first-stage high-speed train

For indicating, frequency deviation curve of high-speed terminal in second-stage high-speed train

For indicating the frequency deviation curve of the high-speed terminal in the third-level high-speed train

Indicating that the high speed terminals are frequency shifted by more than 400 hertz (Hz). The moving speed of the automobile is 60kmph, the moving speed of the bicycle is 20kmph, the walking speed of the user is 3kmph, and the frequency deviation curve of the terminal in the automobile is used

For indicating frequency deviation curve of terminal on bicycle

For indicating frequency deviation curve of terminal carried by walking user

It is shown that the peak value of the frequency offset of the low-speed terminal is 100Hz or less, and the frequency offset is greatly different from that of the high-speed terminal.

As shown in fig. 2c, the frequency offset curve of the low-speed terminal is at a low frequency offset level for a long time while the frequency offset curve of the high-speed terminal is oscillating periodically and at a high frequency offset level for most of the time while the low-speed terminal passes through a physical cell. According to the frequency offset difference between the high-speed terminal and the low-speed terminal, the high-speed terminal and the low-speed terminal can be determined.

Taking the terminal in each device in fig. 2c as an example, fig. 2d is a schematic diagram illustrating determining whether the terminal is a low-speed terminal in the embodiment of the present application. As shown in the figure, the decision threshold of the frequency offset in the decision period is preset to be 200Hz, and according to the doppler frequency offset characteristics, in the 0-250 m traveling process, 0 ° < α < 90 °, the frequency offset of the terminal is a positive number, in the 250-500 m traveling process, 90 ° < α <180 °, the frequency offset of the terminal is a negative number, and is symmetrical to the frequency offset of the terminal in the 0-250 m traveling process. Whether the terminal is a low-speed terminal can be judged according to the absolute value of the frequency deviation and the judgment threshold. As shown in fig. 2d, the absolute value of the frequency offset of the low-speed terminal is lower than the decision threshold of 200Hz, and the absolute value of the frequency offset of the high-speed terminal is mostly higher than the decision threshold of 200Hz, so that the terminal lower than the set decision threshold in the decision period can be determined as the low-speed terminal.

Embodiments provided by the present application are described in detail below with reference to the accompanying drawings.

Fig. 3 is a flowchart illustrating a resource allocation method provided by an embodiment of the present application. The process may be implemented by a network device. As shown in the figure, the process includes the following steps:

s301: and receiving a signal sent by the terminal, and measuring the uplink frequency offset of the terminal.

In the step, the network device receives a signal sent by a terminal accessed into a physical cell, and measures the uplink frequency offset of the terminal in each subframe in real time according to the received signal.

S302: and identifying whether the terminal is a low-speed terminal or not according to the uplink frequency offset of the terminal.

In this step, a decision period for determining the low-speed terminal and a measurement period (e.g., 1 second) of the uplink frequency offset may be preset, where each decision period includes at least one measurement period, and for example, 1 decision period includes 8 measurement periods.

In S301, according to the uplink frequency offset of the terminal measured in real time in each subframe, a plurality of uplink frequency offset measurement results can be obtained in one measurement period. The network equipment determines the mean value of the uplink frequency offset absolute values of the terminals in each measurement period according to the set measurement period, and determines whether the terminal is a low-speed terminal or not according to the mean value of the uplink frequency offset absolute values of the terminals in each measurement period in the judgment period. The identification process is shown in fig. 4.

S303: and if the terminal is a low-speed terminal, setting an upper limit of the number of the allocable time-frequency resources for the terminal, so that the number of the allocable time-frequency resources of each subframe of the terminal does not exceed the upper limit.

In this step, if the terminal is determined to be a low-speed terminal, the network device sets an upper limit of the number of time-frequency resources that can be allocated to the low-speed terminal by the cell, in the cell, the existing time-frequency resource allocation strategy among the plurality of terminals is not changed, but the number of schedulable time-frequency resources in each subframe does not exceed the set upper limit, so that the occupation proportion of the schedulable time-frequency resources in the cell by the low-speed terminal is reduced. The number of time-frequency resources allocable in each subframe is the number of Physical Resource Blocks (PRBs).

For example, there are 100 PRBs in the cell, and before the upper limit is not set, 8 PRBs and 12 PRBs are allocated to the low speed terminal a and the low speed terminal B, respectively. The network equipment sets the upper limit of PRBs which can be allocated to the low-speed terminal in the cell to be 10% (namely 10 PRBs), the low-speed terminal A is allocated to 4 PRBs and the low-speed terminal B is allocated to 6 PRBs after the upper limit is set according to the time-frequency resource allocation strategies of the low-speed terminal A and the low-speed terminal B, and the number of the PRBs which can be allocated to each subframe by the low-speed terminal A and the low-speed terminal B is not more than 10.

S304: if the terminal is a high-speed terminal, the method for allocating the time-frequency resource to the terminal is kept unchanged.

In the above embodiment of the present application, the uplink frequency offset of the terminal is measured according to a received signal sent by the terminal, whether the terminal is a low-speed terminal is determined according to the measured uplink frequency offset, if the terminal is determined to be a low-speed terminal, an upper limit of the number of allocable time-frequency resources is set for the terminal, so that the number of allocable time-frequency resources of the terminal in each subframe does not exceed the upper limit, and if the terminal is determined to be a high-speed terminal, the method for allocating time-frequency resources to the terminal is kept unchanged. By limiting the quantity of the time-frequency resources of the low-speed terminal accessed into the cell, the quantity of the time-frequency resources which can be distributed by the high-speed terminal in the cell is increased, and the perception rate of a high-speed terminal user is further increased.

Fig. 4 is a flowchart illustrating a method for identifying a low-speed terminal according to an embodiment of the present application. As shown, the process includes the following steps:

s401: after the uplink frequency offset of the terminal is measured, whether each measurement period in the judgment period is an effective measurement period is judged, and the mean value of the uplink frequency offset absolute value of the terminal in each effective measurement period is determined.

In this step, one decision period includes at least one measurement period. Determining the number of measurement results of the uplink frequency offset of the terminal in each measurement period in a decision period according to the uplink frequency offset of the terminal measured in real time in each subframe, respectively determining whether each measurement period is an effective measurement period according to the number of the measurement results of the uplink frequency offset of the terminal in each measurement period, if the measurement period is determined to be an effective measurement period, calculating the mean value of the absolute values of the uplink frequency offset of the terminal in the effective measurement period, counting the number of the effective measurement periods in the decision period, and if the measurement period is determined to be an ineffective measurement period, not calculating the mean value of the absolute values of the uplink frequency offset of the terminal in the measurement period. And the number of the measurement results of the uplink frequency offset in each measurement period is at least one.

The determination process of the effective measurement period is described by taking the first measurement period as an example. Wherein, the first measurement period is any one measurement period in the decision period. Specifically, determining the number of measurement results of the uplink frequency offset of the terminal in a first measurement period according to the uplink frequency offset of the terminal measured in real time in the first subframe, and judging whether the number of the measurement results of the uplink frequency offset of the terminal in the first measurement period is greater than a first threshold, if so, determining that the first measurement period is an effective measurement period, otherwise, determining that the first measurement period is an ineffective measurement period. Wherein, the first threshold value can be determined according to the duration of the set measuring period.

In S401, there is a sufficient number of uplink frequency offset measurement results in each effective measurement period, so that interference of a few uplink frequency offset measurement results on the mean value of the uplink frequency offset absolute values is reduced, and accuracy of the mean value of the uplink frequency offset absolute values of the terminal in the effective measurement period is improved.

S402: and determining whether the number of the effective measurement periods in the decision period is greater than a second threshold, if so, executing S403, otherwise, executing S405.

In this step, in order to improve the accuracy of the identification result of the high-speed and low-speed terminals, the number of effective measurement periods should account for more than 50% of the total number of measurement periods in the decision period.

S403: and determining whether the mean values of the uplink frequency offset absolute values of the terminal in each effective measurement period in the decision period are all smaller than a third threshold, if so, executing S404, otherwise, indicating that the mean value of the uplink frequency offset absolute values of the terminal in at least one effective measurement period in the decision period is not smaller than the third threshold, and executing S405.

In this step, a third threshold may be preset according to the influence of the moving speed of the terminal on the magnitude of the uplink frequency offset, for example, the third threshold shown in fig. 2d may be 200Hz, the average of the absolute values of the uplink frequency offset of the terminal in each effective measurement period in the decision period is compared with the third threshold, and the comparison result is used as a basis for identifying the low-speed terminal.

S404: and determining the terminal to be a low-speed terminal.

In this step, the mean value of the absolute values of the uplink frequency offsets of the low-speed terminal is all lower than the third threshold value in the decision period.

S405: and determining the terminal to be a high-speed terminal.

In this step, the mean value of the absolute value of the uplink frequency offset of the high-speed terminal in at least one measurement period in the decision period is not lower than the third threshold.

After the low-speed terminal is determined, the upper limit of the number of the time-frequency resources in the cell which can be allocated to the low-speed terminal can be set so as to increase the number of the time-frequency resources allocated to the high-speed terminal and further increase the perception rate of a high-speed terminal user.

Based on the same technical concept, the embodiment of the present application further provides a network device, which can implement the function of the network side in the foregoing embodiments.

Fig. 5 is a functional block diagram schematically illustrating a network device in the embodiment of the present application. As shown, the network device may include: a receiving module 501, a measuring module 502, a judging module 504 and a resource allocating module 504.

A receiving module 501, configured to receive a signal sent by a terminal;

a measuring module 502, configured to measure an uplink frequency offset of a terminal;

a determining module 503, configured to identify whether the terminal is a low-speed terminal according to the uplink frequency offset of the terminal;

the resource allocation module 504 is configured to set an upper limit of the number of time-frequency resources that can be allocated to the low-speed terminal, so that the number of time-frequency resources that can be allocated by the low-speed terminal in each subframe does not exceed the upper limit.

In some embodiments of the present application, the decision module 503 is configured to:

determining the mean value of the absolute values of the uplink frequency offsets of the terminals in each measurement period according to the set measurement period;

and identifying whether the terminal is a low-speed terminal or not according to the mean value of the uplink frequency offset absolute values of the terminal in each measurement period in a judgment period, wherein one judgment period comprises at least one measurement period.

determining the number of measurement results of uplink frequency offset of the terminal in a first measurement period, wherein the first measurement period is any measurement period in a judgment period;

if the number of the measurement results of the uplink frequency offset in the first measurement period is larger than a first threshold, judging that the first measurement period is an effective measurement period, and determining the average value of the absolute values of the uplink frequency offset of the terminal in the first measurement period; otherwise, the first measurement period is determined to be an invalid measurement period.

The decision module 503 is further configured to:

determining whether the number of effective measurement periods in the decision period is greater than a second threshold, if so, determining whether the mean values of the uplink frequency offset absolute values of the terminal in each effective measurement period in the decision period are all less than a third threshold;

and if the mean value of the absolute values of the uplink frequency offsets of the terminal in each effective measurement period in the judgment period is smaller than the third threshold, identifying the terminal as a low-speed terminal.

In some embodiments of the present application, the decision module 503 is further configured to:

if the number of the effective measurement periods in the judgment period is less than or equal to a second threshold value, identifying the terminal as a high-speed terminal; or, if the number of effective measurement periods included in the decision period is greater than the second threshold, and the mean value of the uplink frequency offset absolute values of the terminal in at least one effective measurement period in the decision period is greater than or equal to the third threshold, identifying the terminal as a high-speed terminal.

In some embodiments of the present application, the resource allocation module 504 is configured to:

and setting an upper limit of the number of the PRBs of the allocable physical resource blocks for the terminal, so that the number of the PRBs allocable by the terminal in each subframe does not exceed the upper limit.

It should be noted that, the network side device provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are not repeated herein.

Based on the same technical concept, the embodiment of the present application further provides a node device, which can implement the function of the terminal side in the foregoing embodiments.

Fig. 6 illustrates a hardware configuration diagram of a network device in the embodiment of the present application. As shown, the network device may include: a processor 601, a memory 602, a transceiver 603, and a bus interface 604.

The processor 601 is responsible for managing the bus architecture and general processing, and the memory 602 may store data used by the processor 601 in performing operations. The transceiver 603 is used for receiving and transmitting data under the control of the processor 601.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 601, and various circuits of memory, represented by memory 602, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 601 is responsible for managing the bus architecture and general processing, and the memory 602 may store data used by the processor 601 in performing operations.

The processes disclosed in the embodiments of the present application can be applied to the processor 601, or implemented by the processor 601. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 601. The processor 601 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 602, and the processor 601 reads the information in the memory 602 and completes the steps of the signal processing flow in combination with the hardware thereof. Specifically, the processor 601 is configured to read the computer instructions in the memory 602 and execute the functions implemented on the network side.

Specifically, the processor 601 may read the computer instructions in the memory 602 to perform the following operations:

judging whether the terminal is a low-speed terminal or not according to the uplink frequency offset of the terminal;

and if the terminal is judged to be a low-speed terminal, setting an upper limit of the number of the allocable time-frequency resources for the terminal, so that the number of the allocable time-frequency resources of each subframe of the terminal does not exceed the upper limit.

It should be noted that, the network device provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are not repeated herein.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application 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.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. 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 apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, 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 apparatus 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 apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. a resource allocation method, is characterized in that, comprises:

receiving a signal sent by a terminal, and measuring the uplink frequency offset of the terminal;

Identify whether the terminal is a low-speed terminal according to the uplink frequency offset of the terminal;

If the terminal is a low-speed terminal, set an upper limit of the number of time-frequency resources that can be allocated for the terminal, so that the number of time-frequency resources that can be allocated by the terminal in each subframe does not exceed the upper limit.

2. The method according to claim 1, wherein the identifying whether the terminal is a low-speed terminal according to the uplink frequency offset of the terminal comprises:

According to the set measurement period, determine the mean value of the absolute value of the uplink frequency offset of the terminal in each measurement period;

Whether the terminal is a low-speed terminal is identified according to the mean value of the absolute value of the uplink frequency offset of the terminal in each measurement period in the decision period, where one decision period includes at least one measurement period.

3. The method according to claim 2, wherein the determining, according to the set measurement period, the mean value of the absolute value of the uplink frequency offset of the terminal in each measurement period comprises:

determining the number of measurement results of the uplink frequency offset of the terminal in a first measurement period, where the first measurement period is any measurement period in the decision period;

If the number of measurement results of the uplink frequency offset in the first measurement period is greater than a first threshold, determine that the first measurement period is a valid measurement period, and determine the uplink frequency of the terminal in the first measurement period the mean value of partial absolute values, otherwise, it is determined that the first measurement period is an invalid measurement period;

Identifying whether the terminal is a low-speed terminal according to the mean value of the absolute value of the uplink frequency offset of the terminal in each measurement period in the decision period includes:

Whether the terminal is a low-speed terminal is identified according to the mean value of the absolute value of the uplink frequency offset of the terminal in each valid measurement period in the decision period.

4. The method according to claim 3, wherein identifying whether the terminal is a low-speed terminal according to the mean value of the absolute value of the uplink frequency offset of the terminal in each valid measurement period in the decision period comprises:

If the number of valid measurement periods in the decision period is greater than the second threshold, determining whether the mean value of the absolute value of the uplink frequency offset of the terminal in each valid measurement period within the decision period is smaller than the third threshold;

If the mean value of the absolute value of the uplink frequency offset of the terminal in each valid measurement period in the decision period is smaller than the third threshold, the terminal is identified as a low-speed terminal.

5. The method according to claim 3, wherein identifying whether the terminal is a low-speed terminal according to the mean value of the absolute value of the uplink frequency offset of the terminal in each valid measurement period in the decision period, further comprising: :

If the number of valid measurement periods in the decision period is less than or equal to the second threshold, identifying the terminal as a high-speed terminal; or

If the number of valid measurement periods included in the decision period is greater than the second threshold, and the mean value of the absolute value of the uplink frequency offset of the terminal in at least one valid measurement period within the decision period is greater than or equal to the first If three thresholds are used, the terminal is identified as a high-speed terminal.

6 . The method according to claim 1 , wherein the upper limit of the number of time-frequency resources that can be allocated to the terminal is set so that the number of video resources that can be allocated by the terminal in each subframe does not exceed the number of video resources that can be allocated to the terminal. Caps, including:

An upper limit of the number of PRBs that can be allocated to the terminal is set, so that the number of PRBs that the terminal can allocate in each subframe does not exceed the upper limit.

7. A network device, comprising: a processor, a memory, and a transceiver;

The transceiver performs data reception and transmission under the control of the processor;

the memory, storing computer instructions;

The processor, for reading the computer instructions, performs the following operations:

8. The network device according to claim 7, wherein the identifying whether the terminal is a low-speed terminal according to the uplink frequency offset of the terminal comprises:

9. The network device according to claim 8, wherein, according to the set measurement period, determining the mean value of the absolute value of the uplink frequency offset of the terminal in each measurement period, comprising:

10 . The network device according to claim 9 , wherein, identifying whether the terminal is a low-speed terminal according to the mean value of the absolute value of the uplink frequency offset of the terminal in each valid measurement period in the decision period, comprising: 11 . :

11. The network device according to claim 9, wherein, identifying whether the terminal is a low-speed terminal according to the mean value of the absolute value of the uplink frequency offset of the terminal in each valid measurement period in the decision period, and further include:

12. The network device according to claim 7, wherein the upper limit of the number of time-frequency resources that can be allocated is set for the terminal, so that the number of video resources that can be allocated by the terminal in each subframe does not exceed all the time-frequency resources. the above limits, including:

13. A network device, comprising:

The receiving module is used to receive the signal sent by the terminal;

a measurement module, configured to measure the uplink frequency offset of the terminal;

a determination module, configured to identify whether the terminal is a low-speed terminal according to the uplink frequency offset of the terminal;

A resource allocation module, configured to set an upper limit of the number of time-frequency resources that can be allocated for the low-speed terminal, so that the number of time-frequency resources that can be allocated by the low-speed terminal in each subframe does not exceed the upper limit.

14. A computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause the computer to execute any one of claims 1-6 method described in item.