CN107846727B - Power control method and device - Google Patents
Power control method and device Download PDFInfo
- Publication number
- CN107846727B CN107846727B CN201610840065.6A CN201610840065A CN107846727B CN 107846727 B CN107846727 B CN 107846727B CN 201610840065 A CN201610840065 A CN 201610840065A CN 107846727 B CN107846727 B CN 107846727B
- Authority
- CN
- China
- Prior art keywords
- frequency band
- communication frequency
- transmitting power
- communication
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
- H04W52/225—Calculation of statistics, e.g. average, variance
Abstract
The invention discloses a power control method and a device, wherein the method comprises the following steps: determining resource utilization rates respectively corresponding to a first communication frequency band and at least one second communication frequency band aiming at a target area; calculating to obtain a difference value of the transmitting power between the at least one second communication frequency band and the first communication frequency band at least based on the resource utilization rate corresponding to each communication frequency band and the bandwidth of each communication frequency band; and adjusting the transmitting power of the at least one second communication frequency band at least based on the difference of the transmitting power to obtain the adjusted transmitting power of the at least one second communication frequency band.
Description
Technical Field
The present invention relates to signal transmission technologies in the field of communications, and in particular, to a power control method and apparatus.
Background
In consideration of the rapid improvement of the resource utilization rate of the TD-LTE network, in a service area of mobile communication, a supplementary communication frequency point may be deployed for a main communication frequency band or a main communication frequency point to share load. In the prior art, when a deployment scheme of a supplementary communication band + a main communication band is generally adopted, the transmission powers of two communication bands (or frequency points) are set to be the same power, so that the spectrum efficiency is maximized. However, the above-mentioned setting method cannot guarantee flexible adjustment of the transmission power for the complementary frequency point, and further cannot guarantee reduction of the influence on the uplink and downlink rates of the user.
Disclosure of Invention
The present invention is directed to a power control method and apparatus, which are used to solve the above-mentioned problems in the prior art.
In order to achieve the above object, the present invention provides a power control method, including:
determining resource utilization rates respectively corresponding to a first communication frequency band and at least one second communication frequency band aiming at a target area;
calculating to obtain a difference value of the transmitting power between the at least one second communication frequency band and the first communication frequency band at least based on the resource utilization rate corresponding to each communication frequency band and the bandwidth of each communication frequency band;
and adjusting the transmitting power of the at least one second communication frequency band at least based on the difference of the transmitting power to obtain the adjusted transmitting power of the at least one second communication frequency band.
The invention provides a power control device, comprising:
the information acquisition unit is used for determining resource utilization rates respectively corresponding to a first communication frequency band and at least one second communication frequency band of a target area;
a calculating unit, configured to calculate, based on at least a resource utilization rate corresponding to each communication frequency band and a bandwidth of each communication frequency band, a difference between transmission powers of the at least one second communication frequency band and the first communication frequency band;
and the power control unit is used for adjusting the transmitting power of the at least one second communication frequency band at least based on the difference value of the transmitting power to obtain the adjusted transmitting power of the at least one second communication frequency band.
According to the power control method and the power control device, the transmitting power can be adjusted based on the resource utilization rates and the bandwidths of the first communication frequency band and the second communication frequency band, so that the transmitting power of a plurality of communication frequency bands in a target area is maintained in a reasonable range; in addition, after the scheme is adopted, the problem that the same transmission power is adopted for each communication frequency band, which may occur in the prior art, is avoided, and the transmission power of at least one second communication frequency band is adjusted, so that the requirement on the total power of the system is reduced.
Drawings
FIG. 1 is a flow chart of a power control method according to an embodiment of the present invention;
fig. 2 is a schematic coverage diagram of a plurality of communication bands for a target area according to an embodiment of the present invention;
fig. 3 is a schematic coverage diagram of a plurality of communication bands for a target area after adjustment according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a power control apparatus according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
An embodiment of the present invention provides a power control method, as shown in fig. 1, the method includes:
step 101: determining resource utilization rates respectively corresponding to a first communication frequency band and at least one second communication frequency band aiming at a target area; the first communication frequency band and the second communication frequency band may or may not have a superposition frequency band;
step 102: calculating to obtain a difference value of the transmitting power between the at least one second communication frequency band and the first communication frequency band at least based on the resource utilization rate corresponding to each communication frequency band and the bandwidth of each communication frequency band;
step 103: and adjusting the transmitting power of the at least one second communication frequency band at least based on the difference of the transmitting power to obtain the adjusted transmitting power of the at least one second communication frequency band.
The solution provided in this embodiment may be applied to a base station, or may also be applied to a network device in a mobile communication network, such as a network management server of a core network, as long as a device capable of providing an information processing function can execute the above-described solution provided in this embodiment.
Especially, when the present embodiment is applied to a scenario in which the same base station can provide multiple communication bands to serve the same target area, the adjustment processing of the transmission power for different communication bands may be directly performed in the base station, and of course, the adjustment may also be post-configured in the core network;
when the present embodiment is applied to coordination between different base stations, for example, a macro base station and a plurality of micro base stations, the processing flow may be configured to be configured in network equipment in a core network, which is beneficial to overall coordination of the entire communication network.
It should be noted that the implementation apparatus and the usage scenario described above are merely examples, and may not be limited to the implementation apparatus and the usage scenario described above in practical application, and this embodiment is not exhaustive.
Before the step 101 is executed, a first communication frequency band and at least one second communication frequency band for one target area may be set on the network side to provide services, and the initial transmission power of the first communication frequency band is the same as the initial transmission power of the at least one second communication frequency band.
For example, referring to fig. 2, in the current scenario, the available system bandwidth of the F band (1.9GHz) in china mobile is 30MHz, and currently, one of the 20MHz bands is mainly used in each city as a basic coverage band (the center frequency point is denoted as F1), and the other 10MHz band (the center is denoted as F2); assuming that F1 is a central frequency point of the first communication band and F2 is a central frequency point of the second communication band, the initial transmission powers of the first communication band and the second communication band are set to be the same, that is, as shown in the figure, the coverage areas provided by the first communication band F1 and the second communication band F2 are the same for the same target area, or it can be understood that F1 and F2 provide the same power to provide service for the target area.
The method for determining the resource utilization rate corresponding to the first communication frequency band and the at least one second communication frequency band of the target area may be: acquiring resources used by user equipment in a first communication frequency band aiming at a target area and service resources which can be provided by the resources, and comparing the two parameters to obtain a resource utilization rate corresponding to the first communication frequency band; and obtaining resources used by the user equipment in the second communication frequency band aiming at the target area and service resources which can be provided by the user equipment, and comparing the two parameters to obtain the resource utilization rate corresponding to the second communication frequency band. Wherein the resources may include time domain resources and/or frequency domain resources.
It can be understood that the resources used by the user equipment served in each communication frequency band may be counted by the network side according to each communication record, and a specific counting manner is not described in this embodiment.
In the step 102, calculating a difference between the transmission powers of the second communication band and the first communication band based on at least the resource utilization rate corresponding to each communication band and the bandwidth of each communication band, includes the following two processing manners:
the first treatment method,
Comparing a second resource utilization rate corresponding to the second communication frequency band with a first resource utilization rate corresponding to the first communication frequency band to obtain a resource utilization rate parameter; comparing the bandwidth of the first communication frequency band with the bandwidth of the second communication frequency band to obtain a bandwidth proportion parameter; and multiplying the resource utilization rate parameter and the bandwidth proportion parameter to obtain the difference value of the transmitting power of the second communication frequency band and the transmitting power of the first communication frequency band.
That is to say, in the processing method provided in this embodiment, the difference of the power to be adjusted in the second communication frequency band is considered in combination with the resource utilization rate of the current second communication frequency band and the resource utilization rate of the first communication frequency band, when the resource utilization rate of the second communication frequency band is higher and the resource utilization rate of the first communication frequency band is lower, the value of the reduction of the transmission power of the second communication frequency band may be larger, that is, the effect of performing the auxiliary communication by using the second communication frequency band on the premise of ensuring the resource utilization rate of the first communication frequency band;
in addition, when the bandwidth of the first communication frequency band is larger and the bandwidth of the second communication frequency band is smaller, the reduction range of the transmission power of the second communication frequency band can be increased, so that the user can access the first communication frequency band with richer frequency domain resources at a higher probability.
Suppose the frequency point resource utilization rates of the first communication frequency band F1 and the second communication frequency band F2 are R respectivelyf1And Rf2The bandwidth is respectively Bf1And Bf2Then, the calculation formula of the difference value of the transmission powers corresponding to the first processing mode is:
Offset＝Rf2/Rf1×Bf1/Bf2(ii) a Wherein the offset represents a difference in transmit power of the second communication band and the first communication band.
The second treatment method,
The method further comprises the following steps: obtaining an adjustment factor; wherein the adjustment factor is used to characterize a relationship between a power variation value and a user residence ratio.
Correspondingly, the calculating, based on at least the resource utilization rate corresponding to each communication band and the bandwidth of each communication band, a difference between the transmission powers of the second communication band and the first communication band includes:
comparing a second resource utilization rate corresponding to the second communication frequency band with a first resource utilization rate corresponding to the first communication frequency band to obtain a resource utilization rate parameter; comparing the bandwidth of the first communication frequency band with the bandwidth of the second communication frequency band to obtain a bandwidth proportion parameter; and multiplying the resource utilization rate parameter, the bandwidth proportion parameter and the adjusting factor to obtain the difference value of the transmitting power of the second communication frequency band and the transmitting power of the first communication frequency band.
The above adjustment factor is used to characterize the relationship between the power variation value and the user residence ratio, and specifically, can be used to characterize the relationship between the power variation value and the user residence ratio of the second communication frequency band, that is, when the adjustment is performed for each second communication frequency band, a factor is additionally considered, and the factor characterizes the relationship between increasing or decreasing the power and increasing or decreasing the number of the served user equipments.
The difference from the first processing mode is that an adjustment factor is added, and the adjustment factor takes into account the relationship between the power variation value and the user residence ratio, so that when the difference of the transmission power is calculated, if the adjustment factor is added, the finally calculated difference can be protected to better fit the service condition of the second communication frequency band.
Suppose the frequency point resource utilization rates of the first communication frequency band F1 and the second communication frequency band F2 are R respectivelyf1And Rf2The bandwidth is respectively Bf1And Bf2(ii) a The adjustment factor can be represented as f (p), where p is used to represent power, and f () represents that the adjustment factor is at least related to power; the calculation formula of the difference value of the transmitting power corresponding to the second processing mode is as follows:
Offset＝Rf2/Rf1×Bf1/Bf2x f (p); wherein the offset represents a difference in transmit power of the second communication band and the first communication band.
The obtaining the adjustment factor further includes: acquiring a coverage radius of a first communication frequency band and a coverage radius of a second communication frequency band, and adjusting the coverage radius of the second communication frequency band based on a power change value to obtain the adjusted coverage radius of the second communication frequency band;
and calculating to obtain an adjusting factor based on the coverage radius of the first communication frequency band and the adjusted coverage radius of the second communication frequency band.
For the calculation of this function, where f (p) can be seen in the following schematic:
assuming that the coverage of F1 and F2 is finally obtained in the current networking mode as shown in fig. 3, wherein the user residence ratio of F2 and F1 can be understood as:
r1 and r2 are respectively the corresponding radiuses of the coverage areas of F1 and F2; that is, the ratio of the coverage area of the F1 band to the coverage area of the F2 band characterizes the user residence ratio in the scene of the user average distribution.
In the above case, if the transmit power is to be increased by p (dbm), considering the relationship between the typical Cost231 path loss and the distance d, p is 34lgd, that is, p is 34That is, the distance change corresponding to the change in power is d; put in the scenario shown in FIG. 3, the corresponding radius change as power increases is 10p/34R 2; finally, assuming that users are uniformly distributed, with the change of power, the user residence ratio in the coverage area of the corresponding two frequency bands is:
it should be understood that the above calculation method for f (p) is only an example, and other calculation methods may exist in actual processing, which is not exhaustive in this embodiment.
Based on the processing scenario provided above, in step 103, the adjusting the transmission power of the at least one second communication band based on at least the difference of the transmission powers may also include the following two processing manners:
the first treatment method,
Judging whether the difference value of the transmitting power is smaller than a preset adjusting threshold value or not; if the difference value of the transmitting power is not smaller than the adjusting threshold value, adjusting the transmitting power of the second communication frequency band to be equal to the transmitting power of the first communication frequency band minus the adjusting threshold value; and if the difference value of the transmitting power is not smaller than the adjusting threshold value, adjusting the transmitting power of the second communication frequency band to be equal to the difference value obtained by subtracting the transmitting power from the transmitting power of the first communication frequency band.
Specifically, in order to ensure the basic coverage index of the F2 frequency point, consider setting the maximum difference between the transmission powers of the F2 and the F1 frequency points, that is, setting the adjustment threshold value (GAP), so that the transmission power P of the actual F2 frequency point is the transmission power Pf2And the transmission power P of F1 frequency pointf1The relationship of (a) to (b) is as follows:
that is, through the above calculation, the processing method can ensure that the transmission power of the second communication frequency band is not adjusted to 0, or can ensure that the transmission power of the second communication frequency band is kept within a reasonable range.
The second treatment method,
Judging whether the difference value of the transmitting power is smaller than a preset adjusting threshold value or not;
if the difference value of the transmitting power is not smaller than the adjusting threshold value, adjusting the transmitting power of the second communication frequency band to be a preset transmitting power;
and if the difference value of the transmitting power is smaller than the adjusting threshold value, adjusting the transmitting power of the second communication frequency band to be equal to the difference value obtained by subtracting the transmitting power from the transmitting power of the first communication frequency band.
Specifically, in order to guarantee basic coverage indexes of F2 frequency points, setting of F2 second communication frequency segment P is consideredf2Can be seen in the following relation:
it should be noted here that the preset transmission power may be set according to an actual situation, for example, at least, the preset transmission power may not be set to zero, or the preset transmission power is greater than zero, and preferably, because the transmission power for the F2 frequency point is determined, the transmission power of the F2 frequency point may be actually set to be smaller than the transmission power of the F1 frequency point, that is, the value range of the preset transmission power should be greater than zero and smaller than the transmission power of the F1 frequency point.
Through the calculation, the processing method can ensure that the transmitting power of the second communication frequency band is kept in a reasonable range.
By adopting the scheme, the transmission power of a plurality of communication frequency bands aiming at the target area can be maintained in a reasonable range, when the communication frequency band is smaller, the transmission power is reduced to be smaller, and correspondingly, the processing result is that the coverage range which can be served by the communication frequency band is possibly smaller, but the method can ensure that the user equipment which uses the communication frequency band for communication can provide high-quality service quality for each user equipment although the number of the user equipment is possibly smaller; for example, referring to fig. 3, assuming that F1 is a first communication band and F2 is a second communication band, after the adjustment is performed by the present scheme, there are three terminals that can be served by F1, and the number of user terminals that can be served by F2 is reduced to only one due to the reduced coverage, but the quality of service difference provided in F1 and F2 is not large.
In addition, after the scheme is adopted, the problem that the same transmission power is adopted for each communication frequency band, which may occur in the prior art, is avoided, and the transmission power of at least one second communication frequency band is adjusted, so that the requirement on the total power of the system is reduced.
Based on the above power control method, the present embodiment can also provide a power control apparatus, as shown in fig. 4, including:
an information obtaining unit 41, configured to determine resource utilization rates corresponding to a first communication frequency band and at least one second communication frequency band of a target area, respectively; the first communication frequency band and the second communication frequency band do not have a superposed frequency band;
a calculating unit 42, configured to calculate, based on at least the resource utilization rate corresponding to each communication frequency band and the bandwidth of each communication frequency band, a difference between the transmission powers of the second communication frequency band and the first communication frequency band;
a power control unit 43, configured to adjust the transmit power of the at least one second communication frequency band at least based on the difference of the transmit powers, so as to obtain an adjusted transmit power of the at least one second communication frequency band.
The apparatus provided in this embodiment may be applied to a base station, or may also be applied to a network device in a mobile communication network, such as a network management server of a core network, as long as a device capable of providing an information processing function can execute the above-described scheme provided in this embodiment.
Especially, when the present embodiment is applied to a scenario in which the same base station can provide multiple communication bands to serve the same target area, the adjustment processing of the transmission power for different communication bands may be directly performed in the base station, and of course, the adjustment may also be post-configured in the core network, that is, the modules may be directly disposed in the base station, or may also be directly disposed in the management device of the core network;
when the embodiment is applied to coordination between different base stations, for example, a macro base station and a plurality of micro base stations, the processing flow may be configured in network equipment in the core network, which is helpful for coordinating the entire communication network, that is, the modules are configured in management equipment of the core network; alternatively, the modules may be respectively disposed in the macro base station and the micro base station, for example, the information obtaining unit may be disposed in the macro base station, and the computing unit and the power control unit may be disposed in the micro base station, or may be disposed in other manners, which is not exhaustive in this embodiment. It should be noted that the implementation apparatus and the usage scenario described above are merely examples, and may not be limited to the implementation apparatus and the usage scenario described above in practical application, and this embodiment is not exhaustive.
Firstly, a first communication frequency band and at least one second communication frequency band are set to provide service for a target area on a network side, and the initial transmission power of the first communication frequency band is the same as that of the at least one second communication frequency band.
For example, referring to fig. 2, in the current scenario, the available system bandwidth of the F band (1.9GHz) in china mobile is 30MHz, and currently, one of the 20MHz bands is mainly used in each city as a basic coverage band (the center frequency point is denoted as F1), and the other 10MHz band (the center is denoted as F2); assuming that F1 is a central frequency point of the first communication band and F2 is a central frequency point of the second communication band, the initial transmission powers of the first communication band and the second communication band are set to be the same, that is, as shown in the figure, the coverage areas provided by the first communication band F1 and the second communication band F2 are the same for the same target area, or it can be understood that F1 and F2 provide the same power to provide service for the target area.
The information acquisition unit is used for acquiring resources used by the user equipment in a first communication frequency band aiming at the target area and service resources which can be provided by the resources, and comparing the two parameters to obtain the resource utilization rate corresponding to the first communication frequency band; and obtaining resources used by the user equipment in the second communication frequency band aiming at the target area and service resources which can be provided by the user equipment, and comparing the two parameters to obtain the resource utilization rate corresponding to the second communication frequency band. Wherein the resources may include time domain resources and/or frequency domain resources.
It can be understood that the resources used by the user equipment served in each communication frequency band may be counted by the network side according to each communication record, and a specific counting manner is not described in this embodiment.
Calculating a difference value of the transmission power between the second communication frequency band and the first communication frequency band at least based on the resource utilization rate corresponding to each communication frequency band and the bandwidth of each communication frequency band, wherein the method comprises the following two processing modes:
the first treatment method,
A calculating unit, configured to compare a second resource utilization rate corresponding to the second communication frequency band with a first resource utilization rate corresponding to the first communication frequency band, to obtain a resource utilization rate parameter; comparing the bandwidth of the first communication frequency band with the bandwidth of the second communication frequency band to obtain a bandwidth proportion parameter; and multiplying the resource utilization rate parameter and the bandwidth proportion parameter to obtain the difference value of the transmitting power of the second communication frequency band and the transmitting power of the first communication frequency band.
That is to say, in the processing method provided in this embodiment, the difference of the power to be adjusted in the second communication frequency band is considered in combination with the resource utilization rate of the current second communication frequency band and the resource utilization rate of the first communication frequency band, when the resource utilization rate of the second communication frequency band is higher and the resource utilization rate of the first communication frequency band is lower, the value of the reduction of the transmission power of the second communication frequency band may be larger, that is, the effect of performing the auxiliary communication by using the second communication frequency band on the premise of ensuring the resource utilization rate of the first communication frequency band;
in addition, when the bandwidth of the first communication frequency band is larger and the bandwidth of the second communication frequency band is smaller, the reduction range of the transmission power of the second communication frequency band can be increased, so that the user can access the first communication frequency band with richer frequency domain resources at a higher probability.
Suppose the frequency point resource utilization rates of the first communication frequency band F1 and the second communication frequency band F2 are R respectivelyf1And Rf2The bandwidth is respectively Bf1And Bf2Then, the calculation formula of the difference value of the transmission powers corresponding to the first processing mode is:
Offset＝Rf2/Rf1×Bf1/Bf2(ii) a Wherein the offset represents a difference in transmit power of the second communication band and the first communication band.
The second treatment method,
The calculation unit is used for acquiring the adjustment factor; wherein the adjustment factor is used to characterize a relationship between a power variation value and a user residence ratio. Comparing a second resource utilization rate corresponding to the second communication frequency band with a first resource utilization rate corresponding to the first communication frequency band to obtain a resource utilization rate parameter; comparing the bandwidth of the first communication frequency band with the bandwidth of the second communication frequency band to obtain a bandwidth proportion parameter; and multiplying the resource utilization rate parameter, the bandwidth proportion parameter and the adjusting factor to obtain the difference value of the transmitting power of the second communication frequency band and the transmitting power of the first communication frequency band.
The above adjustment factor is used to characterize the relationship between the power variation value and the user residence ratio, and specifically, can be used to characterize the relationship between the power variation value and the user residence ratio of the second communication frequency band, that is, when the adjustment is performed for each second communication frequency band, a factor is additionally considered, and the factor characterizes the relationship between increasing or decreasing the power and increasing or decreasing the number of the served user equipments.
The difference from the first processing mode is that an adjustment factor is added, and the adjustment factor takes into account the relationship between the power variation value and the user residence ratio, so that when the difference of the transmission power is calculated, if the adjustment factor is added, the finally calculated difference can be protected to better fit the service condition of the second communication frequency band.
Suppose the frequency point resource utilization rates of the first communication frequency band F1 and the second communication frequency band F2 are R respectivelyf1And Rf2The bandwidth is respectively Bf1And Bf2(ii) a The adjustment factor can be represented as f (p), where p is used to represent power, and f () represents that the adjustment factor is at least related to power; the calculation formula of the difference value of the transmitting power corresponding to the second processing mode is as follows:
Offset＝Rf2/Rf1×Bf1/Bf2x f (p); wherein the offset represents a difference in transmit power of the second communication band and the first communication band.
The calculation unit is configured to acquire a coverage radius of a first communication frequency band, acquire a coverage radius of a second communication frequency band, and adjust the coverage radius of the second communication frequency band based on a power change value to acquire an adjusted coverage radius of the second communication frequency band; and calculating to obtain an adjusting factor based on the coverage radius of the first communication frequency band and the adjusted coverage radius of the second communication frequency band.
For the calculation of this function, where f (p) can be seen in the following schematic:
assuming that the coverage of F1 and F2 is finally obtained in the current networking mode as shown in fig. 3, wherein the user residence ratio of F2 and F1 can be understood as:
that is, the ratio of the coverage area of the F1 band to the coverage area of the F2 band characterizes the user residence ratio in the scene of the user average distribution.
In the above case, if the transmission power is to be increased by p (dbm), considering the relationship between the typical Cost231 path loss and the distance d, p is 34lgd, that is, the distance change corresponding to the power change is d; put in the scenario shown in FIG. 3, the corresponding radius change as power increases is 10p/34R 2; finally, assuming that the users are uniformly distributed, the residence ratio of the users in the coverage area of the corresponding two frequency bands is as follows along with the change of the power：
It should be understood that the above calculation method for f (p) is only an example, and other calculation methods may exist in actual processing, which is not exhaustive in this embodiment.
Based on the processing scenario provided above, the adjusting the transmission power of the at least one second communication band based on at least the difference of the transmission powers may also include the following two processing manners:
the first treatment method,
The power control unit is used for judging whether the difference value of the transmitting power is smaller than a preset adjusting threshold value or not; if the difference value of the transmitting power is not smaller than the adjusting threshold value, adjusting the transmitting power of the second communication frequency band to be equal to the transmitting power of the first communication frequency band minus the adjusting threshold value; and if the difference value of the transmitting power is smaller than the adjusting threshold value, adjusting the transmitting power of the second communication frequency band to be equal to the difference value obtained by subtracting the transmitting power from the transmitting power of the first communication frequency band.
Specifically, in order to ensure the basic coverage index of the F2 frequency point, consider setting the maximum difference between the transmission powers of the F2 and the F1 frequency points, that is, setting the adjustment threshold value (GAP), so that the transmission power P of the actual F2 frequency point is the transmission power Pf2And the transmission power P of F1 frequency pointf1The relationship of (a) to (b) is as follows:
that is, through the above calculation, the processing method can ensure that the transmission power of the second communication frequency band is not adjusted to 0, or can ensure that the transmission power of the second communication frequency band is kept within a reasonable range.
The second treatment method,
The power control unit is used for judging whether the difference value of the transmitting power is smaller than a preset adjusting threshold value or not; if the difference value of the transmitting power is not smaller than the adjusting threshold value, adjusting the transmitting power of the second communication frequency band to be a preset transmitting power; and if the difference value of the transmitting power is smaller than the adjusting threshold value, adjusting the transmitting power of the second communication frequency band to be equal to the difference value obtained by subtracting the transmitting power from the transmitting power of the first communication frequency band.
Specifically, in order to guarantee basic coverage indexes of F2 frequency points, setting of F2 second communication frequency segment P is consideredf2Can be seen in the following relation:
it should be noted here that the preset transmission power may be set according to an actual situation, for example, at least, the preset transmission power may not be set to zero, or the preset transmission power is greater than zero, and preferably, because the transmission power for the F2 frequency point is determined, the transmission power of the F2 frequency point may be actually set to be smaller than the transmission power of the F1 frequency point, that is, the value range of the preset transmission power should be greater than zero and smaller than the transmission power of the F1 frequency point.
That is, through the above calculation, the processing method can ensure that the transmission power of the second communication frequency band is kept within a reasonable range.
By adopting the scheme, the transmission power of a plurality of communication frequency bands aiming at the target area can be maintained in a reasonable range, when the communication frequency band is smaller, the transmission power is reduced to be smaller, and correspondingly, the processing result is that the coverage range which can be served by the communication frequency band is possibly smaller, but the method can ensure that the user equipment which uses the communication frequency band for communication can provide high-quality service quality for each user equipment although the number of the user equipment is possibly smaller; for example, referring to fig. 3, assuming that F1 is a first communication band and F2 is a second communication band, after the adjustment is performed by the present scheme, there are three terminals that can be served by F1, and the number of user terminals that can be served by F2 is reduced to only one due to the reduced coverage, but the quality of service difference provided in F1 and F2 is not large.
In addition, after the scheme is adopted, the problem that the same transmission power is adopted for each communication frequency band, which may occur in the prior art, is avoided, and the transmission power of at least one second communication frequency band is adjusted, so that the requirement on the total power of the system is reduced.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A method of power control, the method comprising:
determining resource utilization rates respectively corresponding to a first communication frequency band and at least one second communication frequency band aiming at a target area;
calculating to obtain a difference value of the transmitting power between the at least one second communication frequency band and the first communication frequency band at least based on the resource utilization rate corresponding to each communication frequency band and the bandwidth of each communication frequency band;
adjusting the transmitting power of the at least one second communication frequency band at least based on the difference value of the transmitting power to obtain the adjusted transmitting power of the at least one second communication frequency band;
the adjusting the transmission power of the at least one second communication band based on at least the difference in transmission power comprises:
if the difference value of the transmitting power is not smaller than a preset adjusting threshold value, adjusting the transmitting power of the second communication frequency band to be equal to the transmitting power of the first communication frequency band minus the adjusting threshold value; if the difference value of the transmitting power is smaller than the adjusting threshold value, adjusting the transmitting power of the second communication frequency band to be equal to the difference value obtained by subtracting the transmitting power from the transmitting power of the first communication frequency band;
alternatively, the first and second electrodes may be,
if the difference value of the transmitting power is not smaller than the adjusting threshold value, adjusting the transmitting power of the second communication frequency band to be a preset transmitting power; and if the difference value of the transmitting power is smaller than the adjusting threshold value, adjusting the transmitting power of the second communication frequency band to be equal to the difference value obtained by subtracting the transmitting power from the transmitting power of the first communication frequency band.
2. The method of claim 1, wherein calculating a difference between transmission powers of the at least one second communication band and the first communication band based on at least a resource utilization rate corresponding to each communication band and a bandwidth of each communication band comprises:
comparing a second resource utilization rate corresponding to the second communication frequency band with a first resource utilization rate corresponding to the first communication frequency band to obtain a resource utilization rate parameter;
comparing the bandwidth of the first communication frequency band with the bandwidth of the second communication frequency band to obtain a bandwidth proportion parameter;
and multiplying the resource utilization rate parameter and the bandwidth proportion parameter to obtain the difference value of the transmitting power of the second communication frequency band and the transmitting power of the first communication frequency band.
3. The method of claim 1, further comprising:
obtaining an adjustment factor; wherein the adjustment factor is used for characterizing the relationship between the power variation value and the user residence ratio;
correspondingly, the calculating, based on at least the resource utilization rate corresponding to each communication band and the bandwidth of each communication band, a difference between the transmission power of the at least one second communication band and the transmission power of the first communication band includes:
comparing a second resource utilization rate corresponding to the second communication frequency band with a first resource utilization rate corresponding to the first communication frequency band to obtain a resource utilization rate parameter;
comparing the bandwidth of the first communication frequency band with the bandwidth of the second communication frequency band to obtain a bandwidth proportion parameter;
and multiplying the resource utilization rate parameter, the bandwidth proportion parameter and the adjusting factor to obtain the difference value of the transmitting power of the second communication frequency band and the transmitting power of the first communication frequency band.
4. The method of claim 3, wherein the obtaining the adjustment factor comprises:
acquiring a coverage radius of a first communication frequency band and a coverage radius of a second communication frequency band, and adjusting the coverage radius of the second communication frequency band based on a power change value to obtain the adjusted coverage radius of the second communication frequency band;
and calculating an adjusting factor representing the user residence ratio of the first communication frequency band and the second communication frequency band based on the coverage radius of the first communication frequency band and the adjusted coverage radius of the second communication frequency band.
5. A power control apparatus, comprising:
the information acquisition unit is used for determining resource utilization rates respectively corresponding to a first communication frequency band and at least one second communication frequency band of a target area;
a calculating unit, configured to calculate, based on at least a resource utilization rate corresponding to each communication frequency band and a bandwidth of each communication frequency band, a difference between transmission powers of the at least one second communication frequency band and the first communication frequency band;
a power control unit, configured to adjust the transmit power of the at least one second communication frequency band at least based on the difference between the transmit powers, so as to obtain an adjusted transmit power of the at least one second communication frequency band;
the power control unit is configured to adjust the transmission power of the second communication band to be equal to the transmission power of the first communication band minus the adjustment threshold value if the difference between the transmission powers is not smaller than the adjustment threshold value; if the difference value of the transmitting power is smaller than the adjusting threshold value, adjusting the transmitting power of the second communication frequency band to be equal to the difference value obtained by subtracting the transmitting power from the transmitting power of the first communication frequency band;
alternatively, the first and second electrodes may be,
the power control unit is configured to adjust the transmit power of the second communication frequency band to a preset transmit power if the difference between the transmit powers is not smaller than the adjustment threshold; and if the difference value of the transmitting power is smaller than the adjusting threshold value, adjusting the transmitting power of the second communication frequency band to be equal to the difference value obtained by subtracting the transmitting power from the transmitting power of the first communication frequency band.
6. The apparatus of claim 5,
the calculating unit is configured to compare a second resource utilization rate corresponding to the second communication frequency band with a first resource utilization rate corresponding to the first communication frequency band, so as to obtain a resource utilization rate parameter; comparing the bandwidth of the first communication frequency band with the bandwidth of the second communication frequency band to obtain a bandwidth proportion parameter; and multiplying the resource utilization rate parameter and the bandwidth proportion parameter to obtain the difference value of the transmitting power of the second communication frequency band and the transmitting power of the first communication frequency band.
7. The apparatus of claim 5,
the calculating unit is used for acquiring an adjusting factor; wherein the adjustment factor is used for characterizing the relationship between the power variation value and the user residence ratio; comparing a second resource utilization rate corresponding to the second communication frequency band with a first resource utilization rate corresponding to the first communication frequency band to obtain a resource utilization rate parameter; comparing the bandwidth of the first communication frequency band with the bandwidth of the second communication frequency band to obtain a bandwidth proportion parameter; and multiplying the resource utilization rate parameter, the bandwidth proportion parameter and the adjusting factor to obtain the difference value of the transmitting power of the second communication frequency band and the transmitting power of the first communication frequency band.
8. The apparatus of claim 7,
the calculation unit is configured to acquire a coverage radius of a first communication frequency band, acquire a coverage radius of a second communication frequency band, and adjust the coverage radius of the second communication frequency band based on a power change value to acquire an adjusted coverage radius of the second communication frequency band; and calculating an adjusting factor representing the user residence ratio of the first communication frequency band and the second communication frequency band based on the coverage radius of the first communication frequency band and the adjusted coverage radius of the second communication frequency band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610840065.6A CN107846727B (en) | 2016-09-21 | 2016-09-21 | Power control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610840065.6A CN107846727B (en) | 2016-09-21 | 2016-09-21 | Power control method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107846727A CN107846727A (en) | 2018-03-27 |
| CN107846727B true CN107846727B (en) | 2021-01-15 |
Family
ID=61657594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610840065.6A Active CN107846727B (en) | 2016-09-21 | 2016-09-21 | Power control method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107846727B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109041191A (en) * | 2018-10-17 | 2018-12-18 | 成都国恒空间技术工程有限公司 | A kind of back Poewr control method of FDMA system radial network |
| CN112449414B (en) * | 2019-08-30 | 2022-07-22 | 上海华为技术有限公司 | Transmission power distribution method, network equipment and storage medium |
| CN116438858A (en) * | 2021-03-24 | 2023-07-14 | Oppo广东移动通信有限公司 | Method for configuring transmitting power and terminal equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101600212A (en) * | 2009-07-06 | 2009-12-09 | 北京邮电大学 | Improving one's methods of a kind of soft-frequency reuse that is used for ofdm system |
| CN102075999A (en) * | 2009-11-24 | 2011-05-25 | 中兴通讯股份有限公司 | Load control method and device |
| CN103068011A (en) * | 2011-10-19 | 2013-04-24 | 华为技术有限公司 | Method and device for power derating in multi-frequency network |
| CN103391604A (en) * | 2013-07-17 | 2013-11-13 | 浙江大学 | Control method for small base station dormancy |
| WO2013174350A2 (en) * | 2013-05-31 | 2013-11-28 | 中兴通讯股份有限公司 | Method and device for deploying low-power base station in macro-cell and rnc |
| WO2013189345A2 (en) * | 2013-04-03 | 2013-12-27 | 中兴通讯股份有限公司 | Method and apparatus for controlling interference between macro base station and low power node |
-
2016
- 2016-09-21 CN CN201610840065.6A patent/CN107846727B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101600212A (en) * | 2009-07-06 | 2009-12-09 | 北京邮电大学 | Improving one's methods of a kind of soft-frequency reuse that is used for ofdm system |
| CN102075999A (en) * | 2009-11-24 | 2011-05-25 | 中兴通讯股份有限公司 | Load control method and device |
| CN103068011A (en) * | 2011-10-19 | 2013-04-24 | 华为技术有限公司 | Method and device for power derating in multi-frequency network |
| WO2013189345A2 (en) * | 2013-04-03 | 2013-12-27 | 中兴通讯股份有限公司 | Method and apparatus for controlling interference between macro base station and low power node |
| WO2013174350A2 (en) * | 2013-05-31 | 2013-11-28 | 中兴通讯股份有限公司 | Method and device for deploying low-power base station in macro-cell and rnc |
| CN103391604A (en) * | 2013-07-17 | 2013-11-13 | 浙江大学 | Control method for small base station dormancy |
Non-Patent Citations (2)
| Title |
|---|
| Optimization of power control algorithm for femtocells based on frame utilization;Pavel Mach等;《IEEE》;20120126;全文 * |
| 基于OFDM的双层Femtocell网络中子信道、速率和功率的最优分配;张建敏等;《中国科学技术大学学报》;20091015;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107846727A (en) | 2018-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102685868B (en) | Power control method and device | |
| EP3151600B1 (en) | Spectrum resource management device and method | |
| Shajaiah et al. | Resource allocation with carrier aggregation in LTE Advanced cellular system sharing spectrum with S-band radar | |
| CN102223191B (en) | Method and equipment for acquiring idle spectrum | |
| CN107846727B (en) | Power control method and device | |
| CN116054976A (en) | Channel detection method, device and storage medium | |
| EP3637644B1 (en) | A data entry method, related device, and system. | |
| CN106658740B (en) | Method and system for improving LAA uplink transmission performance | |
| CN103096451B (en) | The method of a kind of resource distribution and base station | |
| US20240057053A1 (en) | System and method for utilizing overlapping component carriers | |
| CN103312482A (en) | Downlink base-band signal generation method and device, and base station | |
| CN104581830A (en) | Access method and equipment of terminal equipment | |
| Susanto et al. | On the reduction of interference effect using power control for device-to-device communication underlying cellular communication network | |
| Krishnan et al. | Dynamic resource allocation in OFDM based cognitive radio system considering primary user QoS and secondary user proportional constraints | |
| Xu et al. | Lower-complexity power allocation for LTE-U systems: A successive cap-limited waterfilling method | |
| CN106937326B (en) | Method for coordinating transmission among base stations and first base station | |
| CN110225568B (en) | MTC gateway selection method and equipment based on lowest energy consumption under non-orthogonal multiple access | |
| CN111836351B (en) | Power distribution method and device | |
| EP4197275A1 (en) | Sensing bandwidth adjusted energy detection thresholds | |
| CN104202807A (en) | Method and system for controlling uplink power | |
| US20240098654A1 (en) | Dynamic power budget allocation using individualized mtpl per radio link for uplink transmission | |
| Odeh et al. | Utility-based resource allocation for interference limited OFDMA cooperative relay networks | |
| US20220361193A1 (en) | Priority service access using edca channel access technology in a wireless network | |
| Abdelhadi et al. | An optimal resource allocation with frequency reuse in cellular networks | |
| Hao et al. | Energy-efficient resource allocation for cooperative cognitive radio networks with imperfect spectrum sensing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |