CN107645776B - Method and device for releasing shared spectrum resources - Google Patents
Method and device for releasing shared spectrum resources Download PDFInfo
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- CN107645776B CN107645776B CN201610581751.6A CN201610581751A CN107645776B CN 107645776 B CN107645776 B CN 107645776B CN 201610581751 A CN201610581751 A CN 201610581751A CN 107645776 B CN107645776 B CN 107645776B
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Abstract
The invention relates to a method and a device for releasing shared spectrum resources. The release method comprises the following steps: when the preset time is reached, counting the demand of the service in the base station cell on the shared spectrum resource, and if no demand exists, acquiring the spectrum resource utilization rate of the shared spectrum resource group and the authorized spectrum; if the frequency spectrum resource utilization rate is less than or equal to the preset utilization rate, calculating the proportion TR of the service transmission occupied sub-band in the average time of the shared frequency spectrum resource group which is about to expire; if at least one shared spectrum resource group with the TR value smaller than or equal to the first preset proportion value exists, selecting the shared spectrum resource group with the smallest TR value; calculating the proportion IR of the instant service transmission occupied sub-band of the shared resource group with the minimum TR value at the current moment; and if the IR value is smaller than or equal to the second preset proportion value, releasing the shared resource group with the minimum TR value. The device is implemented based on the release method described above. The invention releases the shared frequency spectrum resource group under the condition of ensuring the normal operation of the prior service, and improves the utilization rate of the shared frequency spectrum resource.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for releasing shared spectrum resources.
Background
At present, 223-235 MHz frequency band planning is used for remote measurement, remote control, data transmission and other services, and is mainly used for key industries such as energy, army, weather, earthquake, construction, water conservancy, ground and mining, light industry and the like. The frequency band adopts a fixed allocation mode to carry out frequency spectrum management, the frequency point bandwidth is 25kHz, and the frequency points in various industries are in a discrete distribution state.
With the deep integration of industrialization and informatization, the bandwidth requirements of industry users are increasing day by day, and the existing narrow-band private network system cannot meet the requirements of the industry users. Namely, the narrow-band frequency point division mode of the traditional industry private network frequency band limits the application of the advanced broadband communication technology in the industry private network frequency band and restricts the deep development of industry informatization. On the other hand, the traditional management mode for fixedly allocating the private network frequency has exclusivity, so that the utilization rate of the private network frequency spectrum resource in the current industry is not high, and the waste of the frequency spectrum resource is caused.
In order to guarantee the increasing demand of the spectrum resources of the private network and effectively utilize the spectrum resources, a spectrum sharing scheme is introduced in the prior art, a sensing system applies for obtaining authorized frequency points for transmitting broadcast, control information and guarantee services to a radio management mechanism, and dynamically applies for obtaining a shared spectrum for transmitting other non-guarantee services. Therefore, each sensing system reasonably occupies unused frequency spectrum of the authorized narrow-band system through fair competition, so that the frequency spectrum requirement and the service requirement of the sensing system are met while the normal work of the authorized narrow-band system is guaranteed.
However, in the existing scheduling algorithm of the spectrum sharing base station, when determining whether the due shared resource needs to be delayed, the base station only needs to consider the spectrum demand of the sensing system service and the spectrum utilization rate. If the spectrum utilization rate of a certain shared resource group is low, delay is not needed, and other shared resource groups or spectrum resources available for authorized spectrum are few, so that the current service requirement of the sensing system may not be met when the shared resource group is released, or the spectrum with the high utilization rate just released needs to be reapplied, thereby generating a ping-pong effect.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method and a device for releasing shared spectrum resources, which can solve the technical problems that the available spectrum resources are few or the ping-pong effect is generated by reapplying the spectrum resources due to the release of the shared spectrum resources in the prior art.
In a first aspect, the present invention provides a method for releasing shared spectrum resources, where the method includes:
when the preset time is reached, counting the demand of the service in the base station cell on the shared spectrum resource, and if no demand exists, acquiring the spectrum resource utilization rate of the shared spectrum resource group and the authorized spectrum;
if the frequency spectrum resource utilization rate is less than or equal to a preset utilization rate, calculating a service transmission occupied sub-band proportion TR in the average time of the shared frequency spectrum resource group to be expired;
if at least one shared spectrum resource group with the TR value smaller than or equal to the first preset proportion value exists, selecting the shared spectrum resource group with the smallest TR value;
calculating the proportion IR of the instant service transmission occupied sub-band of the shared resource group with the minimum TR value at the current moment;
and if the IR value is smaller than or equal to a second preset proportion value, releasing the shared resource group with the minimum TR value.
Optionally, if the service in the cell of the base station requires for the shared spectrum resource, the spectrum resource utilization rate is not less than the preset utilization rate, the TR value is not less than the first preset proportion value, or the IR value is not less than the second preset proportion value, the application for all the shared spectrum resources that will expire soon is delayed to implement that all the shared spectrum resources are not released.
Optionally, the spectrum resource utilization rate is a ratio of the number of subbands occupied by the service being transmitted in each shared spectrum resource group to the total number of subbands in each shared spectrum resource group.
Optionally, the traffic transmission occupied subband ratio TR in the average time is calculated by the following expression:
in the formula, SUEiRepresenting the utilization rate of each shared spectrum resource group or authorized spectrum; n is a radical ofiRepresenting the number of subbands of each shared spectrum resource group or licensed spectrum; n is a radical ofreleaseThe number of sub-bands of the shared resource group which needs to be delayed is judged; m represents the utilization of a shared spectrum resource group or licensed spectrum.
Optionally, the instantaneous traffic transmission occupied sub-band ratio IR is calculated by the following expression:
in the formula, SNiRepresenting the number of subbands each shared spectrum resource group or licensed spectrum is transmitting; n is a radical ofiRepresenting the number of subbands of each shared spectrum resource group or licensed spectrum; n is a radical ofreleaseThe number of sub-bands of the shared resource group which needs to be delayed is judged; m represents the utilization of a shared spectrum resource group or licensed spectrum.
In a second aspect, an embodiment of the present invention further provides a device for releasing shared spectrum resources, where the device for releasing shared spectrum resources includes:
the spectrum resource utilization rate acquisition module is used for counting the demand of services in a base station cell on shared spectrum resources when the preset time is reached, and acquiring the spectrum resource utilization rates of a shared spectrum resource group and an authorized spectrum if the demand is not met;
the first calculation module is used for calculating the proportion TR of the service transmission occupied sub-band in the average time of the shared spectrum resource group which is about to expire when the spectrum resource utilization rate is less than or equal to the preset utilization rate;
the shared spectrum resource group selection module is used for selecting a shared spectrum resource group with the minimum TR value when at least one shared spectrum resource group with the TR value smaller than or equal to a first preset proportion value exists;
the second calculation module is used for calculating the proportion IR of the instant service transmission occupied sub-band at the current moment of the shared resource group with the minimum TR value;
and the releasing module is used for releasing the shared resource group with the minimum TR value when the IR value is less than or equal to a second preset proportional value.
Optionally, the releasing apparatus further includes a delay applying module, configured to, when a service in a cell of a base station requires a shared spectrum resource, the spectrum resource utilization rate is not less than the preset utilization rate, the TR value is not less than the first preset proportional value, or the IR value is not less than the second preset proportional value, delay applying for all shared spectrum resources that are about to expire so as to achieve that all shared spectrum resources are not released.
Optionally, the spectrum resource utilization obtaining module is configured to calculate a ratio of the number of subbands occupied by the service being transmitted in each shared spectrum resource group to the total number of subbands in each shared spectrum resource group to obtain the spectrum resource utilization.
Optionally, the first calculating module calculates the traffic transmission occupied subband proportion TR in the average time by using the following expression:
in the formula, SUEiRepresenting the utilization rate of each shared spectrum resource group or authorized spectrum; n is a radical ofiRepresenting the number of subbands of each shared spectrum resource group or licensed spectrum; n is a radical ofreleaseIndicating whether or not to judgeThe number of subbands of the shared resource group to be deferred; m represents the utilization of a shared spectrum resource group or licensed spectrum.
Optionally, the second calculating module calculates the instantaneous traffic transmission occupied sub-band ratio IR by using the following expression:
in the formula, SNiRepresenting the number of subbands each shared spectrum resource group or licensed spectrum is transmitting; n is a radical ofiRepresenting the number of subbands of each shared spectrum resource group or licensed spectrum; n is a radical ofreleaseThe number of sub-bands of the shared resource group which needs to be delayed is judged; m represents the utilization of a shared spectrum resource group or licensed spectrum.
According to the technical scheme, the demand of the service in the base station cell on the shared spectrum resource is counted when a period of time between the use periods of the shared spectrum resource is preset, and if no demand exists, the spectrum resource utilization rate of the shared spectrum resource group and the authorized spectrum is obtained. And when the spectrum resource utilization rate is less than or equal to the preset utilization rate, calculating the proportion TR of the service transmission occupied sub-band in the average time of the upcoming expired shared spectrum resource group. Then selecting a shared spectrum resource group with the minimum TR value from at least one shared spectrum resource group with the TR value less than or equal to a first preset proportion value, and calculating the proportion IR of the instant service transmission occupied sub-band of the shared resource group with the minimum TR value at the current moment; and if the IR value is smaller than or equal to a second preset proportion value, releasing the shared resource group with the minimum TR value. The invention not only considers the demand of the shared spectrum resource, but also considers TR and IR, namely, the proportion of the used sub-band of the existing service and the bearing condition of the existing service after the shared spectrum resource which is about to expire is released. Therefore, the invention only considers releasing one shared spectrum resource group which meets the condition each time, and the rest shared spectrum resource groups which are about to expire adopt a delay method, so that the shared spectrum resource groups which are not needed to be used are released under the condition of ensuring the normal operation of the existing service, thereby improving the utilization of the spectrum resources and avoiding the ping-pong effect generated when more shared spectrum resources are released at one time.
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The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
fig. 1 is a flowchart illustrating a method for releasing spectrum shared resources according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a method for releasing spectrum shared resources according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of average time versus instantaneous time provided by an embodiment of the present invention;
fig. 4 is a block diagram of a device for releasing spectrum shared resources according to an embodiment of the present 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.
In a first aspect, an embodiment of the present invention provides a method for releasing shared spectrum resources, as shown in fig. 1, the method includes:
s11, when the preset time is reached, counting the demand of the service in the base station cell on the shared frequency spectrum resource, if no demand exists, acquiring the frequency spectrum resource utilization rate of the shared frequency spectrum resource group and the authorized frequency spectrum;
s12, if the frequency spectrum resource utilization rate is less than or equal to the preset utilization rate, calculating the proportion TR of the service transmission occupied sub-band in the average time of the shared frequency spectrum resource group which is about to expire;
s13, if at least one shared spectrum resource group with the TR value smaller than or equal to the first preset proportion value exists, selecting the shared spectrum resource group with the smallest TR value;
s14, calculating the proportion IR of the instantaneous service transmission occupied sub-band of the shared resource group with the minimum TR value at the current moment;
and S15, if the IR value is less than or equal to a second preset proportion value, releasing the shared resource group with the minimum TR value.
It should be noted that the preset time refers to a time period from a first time to a second time. In the embodiment of the invention, the first moment is the moment when the shared spectrum resource is applied for or the moment when the using period of the shared spectrum resource which is being used is terminated; the second time is a time before the end of the next use period. That is, the ending time of the last usage period of the shared spectrum resource and a certain time in the current usage period constitute a preset time. The preset time may be set according to an actual application scenario, and may be set to be 10ms, 100ms or longer, for example, which is not limited in the present invention.
It should be noted that, releasing the shared resource group in the foregoing means that when the base station determines that the shared resource group with the minimum TR value needs to be released, the shared resource group is not postponed; and after the current service life is reached, the base station releases the shared resource group when receiving a release command of the resource management center.
Each step of the method for releasing shared spectrum resources provided by the embodiments of the present invention is described in detail below.
Firstly, step S11 is introduced, when the preset time is reached, the required amount of the shared spectrum resource by the service in the base station cell is counted, and if there is no requirement, the spectrum resource utilization rate of the shared spectrum resource group and the authorized spectrum is obtained.
The preset time refers to a time period from a first time to a second time. In the embodiment of the invention, the first moment is the moment when the shared spectrum resource is applied for or the moment when the using period of the shared spectrum resource which is being used is terminated; the second time is a time before the end of the next use period. That is, the ending time of the last usage period of the shared spectrum resource and a certain time in the current usage period constitute a preset time. The preset time may be set according to an actual application scenario, and may be set to be 10ms, 100ms or longer, for example, which is not limited in the present invention.
In practice, each base station may include multiple sectors, and each sector is a cell. For example, in the case of an omni-directional station, the base station includes one cell. When a station is directed, a base station includes multiple sectors, and a base station cell refers to each sector. Therefore, the release method provided by the embodiment of the invention is suitable for various base stations.
A shared set of spectrum resources in the above is a grouping made up of a plurality of sub-bands. In order to ensure the normal use of the service, when applying for the shared spectrum resource, the applied spectrum resource objects are the shared spectrum resource groups.
As shown in fig. 2, when the preset time is reached, the base station counts the amount of demand of the existing service for the shared spectrum resource at the current time in each cell. Existing traffic includes traffic that has been allocated shared spectrum resources and traffic that has waited to be allocated shared spectrum resources. When the demand is not zero, in order to ensure the normal operation of the existing service in the cell, the base station does not release the shared spectrum resources and delays all the shared spectrum resource groups and authorized spectrum which are about to expire.
When the demand is zero, calculating the spectrum resource utilization rate of the authorized spectrum and each shared spectrum resource group. The spectrum resource utilization rate of the authorized spectrum is the proportion of the number of sub-bands occupied by the service being transmitted in the cell occupying all authorized spectra in the cell. The spectrum resource utilization rate of each shared spectrum resource group is the proportion of the number of sub-bands occupied by the service being transmitted to all sub-bands of the shared spectrum resource group. When the spectrum resource utilization rates of the authorized spectrum and each shared spectrum resource group are less than or equal to the preset utilization rate, the process goes to step S12.
If the authorized spectrum and the spectrum resource utilization rate of each shared spectrum resource group are greater than or equal to the preset utilization rate, the current spectrum resource utilization rate is higher, and the shared spectrum resource is not suitable for releasing. Even if the shared spectrum resource is released in the current usage period, a new application is required in the next period.
It should be noted that the preset utilization ratio refers to a ratio of the number of sub-bands occupied by the service being transmitted to the number of all sub-bands. In practical applications, the preset utilization rate may be set as an average value of the spectrum resource utilization rate in a period of time, or a maximum value of the spectrum resource utilization rate in a period of time, or set as values of 80%, 90%, and the like according to the use experience, and those skilled in the art can reasonably adjust the preset utilization rate according to the actual use condition.
Next, step S12 is introduced, and if the spectrum resource utilization rate is less than or equal to the preset utilization rate, the traffic transmission occupied sub-band ratio TR within the average time of the upcoming expired shared spectrum resource group is calculated.
And when the frequency spectrum resource utilization rate is less than or equal to the preset utilization rate, the base station calculates the proportion TR of the service transmission occupied sub-band in the average time. The service transmission occupied subband proportion TR in the average time is an average value of the number of subbands occupied by all services being transmitted in a cell in a period of time and a proportion between the number of all subbands in the cell (including an authorized spectrum and shared spectrum resources) and the number of subbands in a shared spectrum resource group which needs to be delayed, and a calculation expression is as follows:
in the above expression, the numerator is the sum of the number of subbands occupied by all services being transmitted in a cell in an average time period (in fig. 3, T1 and T2 represent the end time of a subband use period, T represents the instant time of a calculation, and a period from T2 to T represents the average time); the denominator is the number of all subbands in the cell (licensed spectrum and shared spectrum resources) minus the number of subbands in the set of shared resources to be postponed.
In the formula, SUEiRepresenting the utilization rate of each shared spectrum resource group or authorized spectrum; n is a radical ofiRepresenting the number of subbands of each shared spectrum resource group or licensed spectrum; n is a radical ofreleaseIndicating whether or not to judgeThe number of subbands of the shared resource group to be deferred; m represents the utilization of a shared spectrum resource group or licensed spectrum.
Next, step S13 is introduced, where if there is at least one shared spectrum resource group with a TR value less than or equal to the first preset proportion value, the shared spectrum resource group with the smallest TR value is selected.
And when the base station acquires the TR value of each shared spectrum resource group, sequentially comparing the TR values with a first preset proportion value.
If the TR values of all the shared spectrum resource groups are greater than the first preset ratio value, it indicates that the ratio of the number of sub-bands occupied by the service being transmitted in the average time is high, and the shared spectrum resource is not suitable to be released, otherwise, the shared spectrum resource needs to be reapplied for the service in the cell.
When the TR values of at least one shared spectrum resource group are smaller than or equal to a first preset proportion value, the TR values of the at least one shared spectrum resource group are sorted. And then selecting the shared spectrum resource group with the minimum TR value as a candidate object for release.
It should be noted that the first preset proportion value is used to trigger whether to select the threshold value of the shared spectrum resource group event with the minimum TR value, and the first preset proportion value may be set according to a specific usage scenario.
Fourthly, the step of S14 calculating the instantaneous traffic transmission occupied sub-band ratio IR of the current time of the shared resource group with the minimum TR value is introduced.
The base station calculates the proportion IR of the instant service transmission occupied sub-band of the shared resource group with the minimum TR value at the current moment, wherein the proportion IR of the instant service transmission occupied sub-band is the proportion of the number of sub-bands occupied by the service being transmitted at the current moment in the shared spectrum resource group and the difference between the number of all sub-bands (authorized spectrum and shared spectrum) in the cell and the number of sub-bands in the shared spectrum resource group needing to be delayed, and the calculation expression is as follows:
in the above equation, the numerator is the sum of the number of subbands occupied by all services being transmitted in the cell at the instant (current time) when the event triggers expiration, and the denominator is the number of subbands in the cell excluding the number of subbands in the resource group to be postponed.
In the formula, SNiRepresenting the number of subbands each shared spectrum resource group or licensed spectrum is transmitting; n is a radical ofiRepresenting the number of subbands of each shared spectrum resource group or licensed spectrum; n is a radical ofreleaseThe number of sub-bands of the shared resource group which needs to be delayed is judged; m represents the utilization of a shared spectrum resource group or licensed spectrum.
Finally, step S15 is introduced, and if the IR value is less than or equal to the second preset ratio, the shared resource set with the minimum TR value is released.
The base station compares the IR value of the shared spectrum resource group with a second preset proportion value. If the IR value is greater than the second preset ratio value, the shared spectrum resource group does not need to be released, that is, all the shared spectrum resource groups and the authorized spectrum application are deferred.
If the IR value is less than or equal to the second preset ratio value, it indicates that even after releasing the spectrum resources of the shared resource group, the licensed spectrum and the shared spectrum resources in the cell can meet the requirement of the service on the spectrum resources in the next service period, at this time, the shared spectrum resource group may be actively released or not operated to wait for release due, and the application for other licensed spectrum and shared spectrum resource groups is delayed.
It should be noted that the second preset proportion value is used to trigger a critical value of an event for releasing the shared spectrum resource group with the minimum TR value, and the second preset proportion value may be set according to a specific usage scenario.
It should be noted that, in the embodiment of the present invention, a plurality of shared spectrum resource groups with the smallest TR values may occur, and at this time, the IR value is calculated according to step S15, and one shared spectrum resource group meeting the condition is released. Certainly, to simplify the calculation, one calculated IR value is randomly selected from a plurality of shared spectrum resource groups with the smallest TR value, and the subsequent determination is continued.
In a second aspect, an embodiment of the present invention further provides a device for releasing shared spectrum resources, as shown in fig. 4, where the device for releasing shared spectrum resources includes:
the spectrum resource utilization rate obtaining module M11 is configured to count a required amount of a service in a base station cell for shared spectrum resources when a preset time is reached, and if there is no requirement, obtain a spectrum resource utilization rate of a shared spectrum resource group and an authorized spectrum; the spectrum resource utilization obtaining module M11 calculates a ratio of the number of subbands occupied by the service being transmitted in each shared spectrum resource group to the total number of subbands in each shared spectrum resource group, where the ratio is the spectrum resource utilization.
A first calculating module M12, configured to calculate a traffic transmission occupied sub-band ratio TR within an average time of a to-expire shared spectrum resource group when the spectrum resource utilization rate is less than or equal to a preset utilization rate; the first calculation module M12 calculates the traffic transmission occupied subband proportion TR in said average time by means of the following expression:
in the formula, SUEiRepresenting the utilization rate of each shared spectrum resource group or authorized spectrum; n is a radical ofiRepresenting the number of subbands of each shared spectrum resource group or licensed spectrum; n is a radical ofreleaseThe number of sub-bands of the shared resource group which needs to be delayed is judged; m represents the utilization of a shared spectrum resource group or licensed spectrum.
The shared spectrum resource group selection module M13 is configured to, when there is at least one shared spectrum resource group whose TR value is less than or equal to a first preset proportion value, select the shared spectrum resource group whose TR value is the smallest;
a second calculating module M14, configured to calculate an instantaneous traffic transmission occupied sub-band ratio IR of the current time of the shared resource group with the minimum TR value; the second calculation module M14 calculates the instantaneous traffic transmission occupied sub-band ratio IR by the following expression:
in the formula, SNiRepresenting the number of subbands each shared spectrum resource group or licensed spectrum is transmitting; n is a radical ofiRepresenting the number of subbands of each shared spectrum resource group or licensed spectrum; n is a radical ofreleaseThe number of sub-bands of the shared resource group which needs to be delayed is judged; m represents the utilization of a shared spectrum resource group or licensed spectrum.
And the releasing module M15 is configured to release the shared resource group with the smallest TR value when the IR value is less than or equal to a second preset proportion value.
The release apparatus provided in the embodiment of the present invention further includes a delay application module (not shown in the figure), where the delay application module is configured to, when a service in a cell of a base station requires a shared spectrum resource, the spectrum resource utilization is not less than the preset utilization, the TR value is not less than the first preset ratio value, or the IR value is not less than the second preset ratio value, apply for a delay to all shared spectrum resources that are about to expire, so as to achieve that all shared spectrum resources are not released.
As can be seen from the above, the release device provided in the embodiment of the present invention is implemented based on the release method described above, so that the same technical problems can be solved, and the same technical effects can be obtained, which are not described in detail herein.
In summary, according to the release method and device for shared spectrum resources provided in the embodiments of the present invention, when a period of time between the usage periods of the shared spectrum resources is a preset time, the required amount of the services in the cell of the base station for the shared spectrum resources is counted, and if there is no demand, the spectrum resource utilization rates of the shared spectrum resource group and the authorized spectrum are obtained. And when the spectrum resource utilization rate is less than or equal to the preset utilization rate, calculating the proportion TR of the service transmission occupied sub-band in the average time of the upcoming expired shared spectrum resource group. Then selecting a shared spectrum resource group with the minimum TR value from at least one shared spectrum resource group with the TR value less than or equal to a first preset proportion value, and calculating the proportion IR of the instant service transmission occupied sub-band of the shared resource group with the minimum TR value at the current moment; and if the IR value is smaller than or equal to a second preset proportion value, releasing the shared resource group with the minimum TR value. The invention not only considers the demand of the shared spectrum resource, but also considers TR and IR, namely, the proportion of the used sub-band of the existing service and the bearing condition of the existing service after the shared spectrum resource which is about to expire is released. Therefore, the invention only considers releasing one shared spectrum resource group which meets the condition each time, and the rest shared spectrum resource groups which are about to expire adopt a delay method, so that the shared spectrum resource groups which are not needed to be used are released under the condition of ensuring the normal operation of the existing service, thereby improving the utilization of the spectrum resources and avoiding the ping-pong effect generated when more shared spectrum resources are released at one time.
It should be noted that, in the respective components of the apparatus disclosed in the present embodiment, the components therein are logically divided according to the functions to be implemented, but the present invention is not limited thereto, and the respective components may be re-divided or combined as needed, for example, some components may be combined into a single component, or some components may be further decomposed into more sub-components.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functionality of some or all of the components in a system according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
The above embodiments are only suitable for illustrating the present invention and not limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (6)
1. A method for releasing shared spectrum resources, the method comprising:
when the preset time is reached, counting the demand of the service in the base station cell on the shared spectrum resource, and if no demand exists, acquiring the spectrum resource utilization rate of the shared spectrum resource group and the authorized spectrum;
if the frequency spectrum resource utilization rate is less than or equal to a preset utilization rate, calculating a service transmission occupied sub-band proportion TR in the average time of the shared frequency spectrum resource group to be expired;
if at least one shared spectrum resource group with the TR value smaller than or equal to the first preset proportion value exists, selecting the shared spectrum resource group with the smallest TR value;
calculating the proportion IR of the instant service transmission occupied sub-band of the shared resource group with the minimum TR value at the current moment;
if the IR value is smaller than or equal to a second preset proportion value, releasing the shared resource group with the minimum TR value;
the service transmission occupation subband proportion TR in the average time is calculated by the following expression:
in the formula, SUEiRepresenting the utilization rate of each shared spectrum resource group or authorized spectrum; n is a radical ofiRepresenting the number of subbands of each shared spectrum resource group or licensed spectrum; n is a radical ofreleaseThe number of sub-bands of the shared resource group which needs to be delayed is judged; m represents the utilization rate of a shared spectrum resource group or authorized spectrum;
the instantaneous service transmission occupied sub-band ratio IR is calculated by the following expression:
in the formula, SNiRepresenting the number of subbands each shared spectrum resource group or licensed spectrum is transmitting; n is a radical ofiRepresenting the number of subbands of each shared spectrum resource group or licensed spectrum; n is a radical ofreleaseThe number of sub-bands of the shared resource group which needs to be delayed is judged; m represents the utilization of a shared spectrum resource group or licensed spectrum.
2. The release method according to claim 1, wherein if the traffic in the cell of the base station requires the shared spectrum resource, the utilization rate of the spectrum resource is not less than the predetermined utilization rate, the TR value is not less than the first predetermined ratio value, or the IR value is not less than the second predetermined ratio value, the application for all the shared spectrum resources that will expire soon is delayed to achieve that all the shared spectrum resources are not released.
3. The release method according to claim 1, wherein the spectrum resource utilization is a ratio of the number of subbands occupied by the traffic being transmitted in each group of shared spectrum resources to the total number of subbands in each group of shared spectrum resources.
4. A release apparatus for shared spectrum resources, the release apparatus comprising:
the spectrum resource utilization rate acquisition module is used for counting the demand of services in a base station cell on shared spectrum resources when the preset time is reached, and acquiring the spectrum resource utilization rates of a shared spectrum resource group and an authorized spectrum if the demand is not met;
the first calculation module is used for calculating the proportion TR of the service transmission occupied sub-band in the average time of the shared spectrum resource group which is about to expire when the spectrum resource utilization rate is less than or equal to the preset utilization rate;
the shared spectrum resource group selection module is used for selecting a shared spectrum resource group with the minimum TR value when at least one shared spectrum resource group with the TR value smaller than or equal to a first preset proportion value exists;
the second calculation module is used for calculating the proportion IR of the instant service transmission occupied sub-band at the current moment of the shared resource group with the minimum TR value;
the releasing module is used for releasing the shared resource group with the minimum TR value when the IR value is smaller than or equal to a second preset proportional value;
the first calculation module calculates the traffic transmission occupied subband proportion TR in the average time by the following expression:
in the formula, SUEiRepresenting the utilization rate of each shared spectrum resource group or authorized spectrum; n is a radical ofiRepresenting the number of subbands of each shared spectrum resource group or licensed spectrum; n is a radical ofreleaseThe number of sub-bands of the shared resource group which needs to be delayed is judged; m represents the utilization rate of a shared spectrum resource group or authorized spectrum;
the second calculating module calculates the instantaneous service transmission occupation subband ratio IR by the following expression:
in the formula, SNiRepresenting the number of subbands each shared spectrum resource group or licensed spectrum is transmitting; n is a radical ofiRepresenting the number of subbands of each shared spectrum resource group or licensed spectrum; n is a radical ofreleaseThe number of sub-bands of the shared resource group which needs to be delayed is judged; m represents the utilization of a shared spectrum resource group or licensed spectrum.
5. The release apparatus of claim 4, further comprising a deferral application module, configured to defer all shared spectrum resources that are about to expire to achieve that all shared spectrum resources are not released when a service in a cell of a base station requires shared spectrum resources, the spectrum resource utilization is not less than the preset utilization, the TR value is not less than the first preset proportion value, or the IR value is not less than the second preset proportion value.
6. The releasing apparatus of claim 4, wherein the spectrum resource utilization acquiring module is configured to calculate a ratio of the number of subbands occupied by the service being transmitted in each shared spectrum resource group to the total number of subbands in each shared spectrum resource group to acquire the spectrum resource utilization.
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