CN110602778A - Power headroom scheduling method and device - Google Patents
Power headroom scheduling method and device Download PDFInfo
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- CN110602778A CN110602778A CN201810608865.4A CN201810608865A CN110602778A CN 110602778 A CN110602778 A CN 110602778A CN 201810608865 A CN201810608865 A CN 201810608865A CN 110602778 A CN110602778 A CN 110602778A
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- 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
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/365—Power headroom reporting
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Abstract
The embodiment of the invention provides a method and a device for scheduling power headroom, wherein the method comprises the following steps: determining whether uplink power headroom sent by a mobile terminal to a base station is received in a preset time period, and determining whether the variation of the received power exceeds a preset power threshold value based on the received power of a channel detection signal in a first specified time and a second specified time; if the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period and/or the variation of the receiving power of the channel detection signal exceeds a preset power threshold, sending a scheduling instruction to the mobile terminal to inform the mobile terminal to report the power headroom of the mobile terminal to the base station. Therefore, the problem that the service quality of the current mobile terminal or other mobile terminals is reduced due to the fact that power control cannot be carried out in time in the prior art is solved, and the beneficial effect that the power control can be carried out in time to improve the service quality of the current mobile terminal and other mobile terminals is achieved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for scheduling a power headroom.
Background
An LTE (Long Term Evolution) system improves service performance of edge users by using power control, so as to improve system fairness, reduce terminal energy consumption, and reduce intra/inter-cell interference. For closed-loop power control, the base station needs to determine whether the transmission power is appropriate according to the power headroom reported by the mobile terminal.
In the prior art, a mobile terminal periodically reports a power headroom, or when a change of a path loss exceeds a set threshold, the mobile terminal is triggered to report the power headroom. If the mobile terminal is not scheduled within a period of time, the mobile terminal will not report the power headroom for the short time.
It can be seen that, when the terminal reports power headroom discontinuously, thereby causing the increase of the path loss between two adjacent reported power headroom, the transmission power of the mobile terminal cannot be increased in time, and the service quality is reduced; otherwise, when the path loss between two adjacent reported power margins is reduced, the transmission power of the mobile terminal cannot be reduced in time, and the service quality of other users is affected.
Disclosure of Invention
In view of the above, the present invention is proposed to provide a scheduling method and apparatus for power headroom that solves the above problems or at least partially solves the above problems.
According to a first aspect of the present invention, there is provided a method for scheduling power headroom, including:
determining whether uplink power headroom sent by a mobile terminal to a base station is received in a preset time period, and determining whether the variation of the received power exceeds a preset power threshold value based on the received power of a channel detection signal in a first specified time and a second specified time;
if the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period and/or the variation of the receiving power of the channel detection signal exceeds a preset power threshold, sending a scheduling instruction to the mobile terminal to inform the mobile terminal to report the power headroom of the mobile terminal to the base station.
Optionally, the step of determining whether a variation of the received power exceeds a preset power threshold based on the received power of the channel sounding signal at the first specified time and the second specified time includes:
receiving a channel detection signal reported by a mobile terminal, and determining the receiving power of the channel detection signal at a first designated time and a second designated time to obtain a first receiving power and a second receiving power;
calculating a difference between the first received power and the second received power;
and judging whether the absolute value of the difference value is greater than or equal to a preset power threshold value.
Optionally, the step of sending a scheduling instruction to the mobile terminal to notify the mobile terminal to report the power headroom of the mobile terminal to the base station includes:
and before sending the common scheduling instruction, preferentially sending the scheduling instruction to the mobile terminal so as to inform the mobile terminal to report the power headroom of the mobile terminal to a base station.
Optionally, the step of determining whether an uplink power headroom sent by the mobile terminal to the base station is received within a preset time period includes:
if receiving an uplink power margin sent by a mobile terminal to a base station, starting a timer to record the current time, wherein the overtime time of the timer is within a preset time period after the timer is started;
and if the timer is overtime and does not receive the uplink power headroom sent by the mobile terminal to the base station again, determining that the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period.
Optionally, after the step of sending a scheduling instruction to the mobile terminal to notify the mobile terminal to report the power headroom of the mobile terminal to the base station, the method further includes:
and if the power allowance reported by the mobile terminal is received, transmitting a power control instruction to the mobile terminal according to the power allowance.
According to a second aspect of the present invention, there is provided an apparatus for scheduling power headroom, comprising:
the system comprises an abnormality judgment module, a power control module and a power control module, wherein the abnormality judgment module is used for determining whether uplink power allowance sent by a mobile terminal to a base station is received within a preset time period, and determining whether the variation of the received power exceeds a preset power threshold value based on the received power of a channel detection signal at a first designated time and a second designated time;
and the scheduling instruction sending module is used for sending a scheduling instruction to the mobile terminal to inform the mobile terminal to report the power headroom of the mobile terminal to the base station if the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period and/or the variation of the received power of the channel detection signal exceeds a preset power threshold.
Optionally, the abnormality determining module includes:
the receiving power determining submodule is used for receiving the channel detection signal reported by the mobile terminal and determining the receiving power of the channel detection signal at the first designated time and the second designated time to obtain a first receiving power and a second receiving power;
the power difference value calculating submodule is used for calculating the difference value of the first receiving power and the second receiving power;
and the power difference value judgment submodule is used for judging whether the absolute value of the difference value is greater than or equal to a preset power threshold value.
Optionally, the scheduling instruction sending module includes:
and the scheduling instruction sending submodule is used for preferentially sending a scheduling instruction to the mobile terminal before sending the common scheduling instruction so as to inform the mobile terminal to report the power headroom of the mobile terminal to the base station.
Optionally, the abnormality determining module includes:
the timer starting submodule is used for starting a timer to record the current time if uplink power allowance sent to the base station by the mobile terminal is received, and the overtime time of the timer is within a preset time period after the timer is started;
and the data receiving and judging submodule is used for determining that the uplink power headroom sent by the mobile terminal to the base station is not received in a preset time period if the timer is overtime and the uplink power headroom sent by the mobile terminal to the base station is not received again.
Optionally, the apparatus further comprises:
and the power control instruction sending module is used for sending a power control instruction to the mobile terminal according to the power allowance if the power allowance reported by the mobile terminal is received.
The embodiment of the invention has the following advantages:
according to the scheduling method and device of the power headroom, whether the uplink power headroom sent by the mobile terminal to the base station is received in a preset time period or not can be determined, and whether the variation of the received power exceeds a preset power threshold or not is determined based on the received power of the channel detection signal in the first specified time and the second specified time; if the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period and/or the variation of the receiving power of the channel detection signal exceeds a preset power threshold, sending a scheduling instruction to the mobile terminal to inform the mobile terminal to report the power headroom of the mobile terminal to the base station. Therefore, the problem that the service quality of the current mobile terminal or other mobile terminals is reduced due to the fact that power control cannot be carried out in time in the prior art is solved, and the beneficial effect that the power control can be carried out in time to improve the service quality of the current mobile terminal and other mobile terminals is achieved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a flowchart illustrating a first embodiment of a method for scheduling power headroom according to the present invention;
fig. 2 is a flowchart illustrating the steps of an embodiment two of a scheduling method of power headroom according to the present invention;
fig. 3 is a block diagram illustrating a third embodiment of a scheduling apparatus for power headroom according to the present invention;
fig. 4 is a block diagram illustrating a fourth embodiment of a scheduling apparatus for power headroom according to the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example one
Referring to fig. 1, a flowchart illustrating a first step of a scheduling method for power headroom according to the present invention is shown, which specifically includes the following steps:
step 101, determining whether an uplink power headroom sent by a mobile terminal to a base station is received within a preset time period, and determining whether a variation of the received power exceeds a preset power threshold based on the received power of a channel sounding signal at a first specified time and a second specified time.
The preset time period is used for judging whether the mobile terminal is scheduled in the time period, and when the time period is set to be a large value, whether the mobile terminal is scheduled cannot be determined in time, so that the calculation cost is low; when the time period is set to a small value, whether the mobile terminal is scheduled or not can be determined in time, but the calculation cost is high. It will be appreciated that the preset time period may be set according to empirical values in order to ensure timeliness and low cost as much as possible.
The Uplink power headroom is communication data sent by the mobile terminal to the base station through a Physical Uplink Shared Channel (PUSCH), and includes control data, user data, and the like. When the mobile terminal sends the uplink power headroom to the base station, the uplink power headroom is carried, so that power control can be carried out; when the mobile terminal does not transmit the uplink power headroom to the base station for a long period of time, the base station cannot determine the transmission power of the mobile terminal, and thus cannot perform power control in time.
The channel Sounding Signal (SRS) is a Reference Signal periodically transmitted from the mobile terminal to the base station, and is used to determine channel quality and the like.
The first designated time and the second designated time are reference times for calculating a variation in received power of the channel sounding signal. The period of the channel sounding signal may be determined according to, and is not limited by, the embodiments of the present invention.
It can be understood that the variation of the received power of the channel sounding signal may be positive or negative, and when the first specified time is longer than the second specified time, and the variation of the first specified time with respect to the second specified time is negative, it represents that the received power of the channel sounding signal becomes smaller; when the variation of the first predetermined time from the second predetermined time is positive, it means that the received power of the channel sounding signal is increased.
Step 102, if the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period, and/or the variation of the received power of the channel detection signal exceeds a preset power threshold, sending a scheduling instruction to the mobile terminal to inform the mobile terminal to report the power headroom of the mobile terminal to the base station.
The scheduling instruction is used for informing the mobile terminal of reporting the power headroom.
The power headroom is a difference between the maximum transmission power and the transmission power of the mobile terminal when transmitting data through the PUSCH. The larger the transmission power is, the smaller the power margin is, so that the less the power resources can be used by the mobile terminal; the smaller the transmission power, the larger the power headroom and thus the more power resources the mobile terminal can use.
In practical application, if the mobile terminal does not send data to the base station for a long time, the mobile terminal is not scheduled, so that the mobile terminal is required to report power headroom to more accurately control power; the mobile terminal sends data to the base station all the time, and the base station can determine the power headroom, so that the power control can be accurately carried out without reporting the power headroom again.
In addition, if the variation of the received power of the channel sounding signal is too large, it represents that the channel path loss variation is too large, and therefore the mobile terminal needs to report the power margin, so as to perform power control more accurately. For example, when the channel path loss becomes large, the mobile terminal needs to adjust the transmission power up; when the channel path loss becomes small, the mobile terminal needs to adjust the transmission power down. And if the variation of the receiving power of the channel detection signal is smaller, the variation of the channel path loss is smaller, so that the mobile terminal can transmit according to the original transmitting power.
In the embodiment of the present invention, it may be determined whether an uplink power headroom sent by a mobile terminal to a base station is received within a preset time period, and based on a received power of a channel sounding signal at a first specified time and a second specified time, it is determined whether a variation of the received power exceeds a preset power threshold; if the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period and/or the variation of the receiving power of the channel detection signal exceeds a preset power threshold, sending a scheduling instruction to the mobile terminal to inform the mobile terminal to report the power headroom of the mobile terminal to the base station. Therefore, the problem that the service quality of the current mobile terminal or other mobile terminals is reduced due to the fact that power control cannot be carried out in time in the prior art is solved, and the beneficial effect that the power control can be carried out in time to improve the service quality of the current mobile terminal and other mobile terminals is achieved.
Example two
Referring to fig. 2, a flowchart illustrating a second step of the scheduling method for power headroom according to the present invention is shown, which specifically includes the following steps:
step 201, if receiving an uplink power margin sent by a mobile terminal to a base station, starting a timer to record a current time, wherein an overtime time of the timer is within a preset time period after the timer is started.
And the current time is the current time of the base station system.
The embodiment of the invention can determine whether the mobile terminal sends the uplink power margin or not through the timer. Specifically, in the embodiment of the present invention, the time when the uplink power headroom is received last time is used as the start time of the counting period, and counting is ended when the timer is overtime after the preset time period.
It can be understood that the preset time period of the step is the preset time period in the step 101, and the detailed description may refer to the detailed description in the step 101, which is not described herein again.
Step 202, if the timer is overtime and the uplink power headroom sent by the mobile terminal to the base station is not received again, it is determined that the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period.
If the uplink power allowance sent by the mobile terminal is received before the timer is overtime, the mobile terminal is not informed of the reported power allowance, the timer is reset, and the current time is used as new starting time to be counted again; and if the uplink power allowance sent by the mobile terminal is not received before the timer is overtime, the mobile terminal is informed to report the power allowance, the timer is reset, and the current time is used as new starting time for statistics again.
Step 203, receiving the channel probing signal reported by the mobile terminal, and determining the receiving power of the channel probing signal at the first designated time and the second designated time to obtain a first receiving power and a second receiving power.
In practical application, when the receiving power of the base station to the channel detection signal fluctuates up and down within a certain range, it is indicated that the channel path loss does not change greatly, so that the power margin reported before has a reference value; when the receiving power of the base station to the channel detection signal fluctuates and exceeds the range, the channel path loss is changed greatly, so that the power margin reported before does not have the reference value, and the power margin needs to be reported again.
Specifically, in the embodiment of the present invention, each time a channel sounding signal is received, a current time is used as a first designated time, and a time when the channel sounding signal is received last time is used as a second designated time, so that a power at which the channel sounding signal is received at the current time and a power at which the channel sounding signal is received last time are a first received power and a second received power, respectively.
It is to be understood that, in practical applications, two non-adjacent received powers may also be used as the first received power and the second received power, which is not limited by the embodiment of the present invention.
Step 204, calculating a difference between the first received power and the second received power.
The embodiment of the invention can judge whether the channel path loss changes too much according to the difference value of the two receiving powers. When the difference value is larger than or equal to a preset value, the channel path loss change is over large; and when the difference value is smaller than the preset value, the change of the channel path loss is not large.
Step 205, determining whether the absolute value of the difference is greater than or equal to a preset power threshold.
The power threshold is used to determine whether the variation of the received power of the channel sounding signal is too large. The setting can be set according to an empirical value and an actual application scenario, and the embodiment of the invention does not limit the setting.
In practical application, when the absolute value of the difference is smaller than the power threshold, the mobile terminal is not informed of reporting the power margin; and when the absolute value of the difference is larger than or equal to the power threshold, informing the mobile terminal to report the power margin.
It can be understood that steps 201 to 202 and steps 203 to 205 are two methods for determining whether to report the power headroom, respectively, and in practical application, the two methods may be adopted at the same time, or one of the two methods may be selected. The embodiments of the present invention do not limit them.
Step 206, if the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period, and/or the variation of the received power of the channel sounding signal exceeds a preset power threshold, before sending a common scheduling instruction, preferentially sending a scheduling instruction to the mobile terminal to inform the mobile terminal to report the power headroom of the mobile terminal to the base station.
Specifically, for accurate determination, when the variation of the received power of the channel sounding signal exceeds a preset power threshold, if the power headroom reported by the mobile terminal is not received within the time period, a scheduling instruction is sent to the mobile terminal, and the mobile terminal is notified to report the power headroom.
In practical applications, when the base station accumulates more scheduling instructions, the scheduling instruction informing the mobile terminal to report the power headroom of the mobile terminal to the base station may be ranked before other common scheduling instructions. Therefore, the power margin can be reported as far as possible.
Step 207, if the power headroom reported by the mobile terminal is received, a power control instruction is issued to the mobile terminal according to the power headroom.
The power control command may indicate that the current transmission power of the mobile terminal is too high or too low. When the current transmission power is overlarge, the mobile terminal reduces the transmission power so as to reduce the power consumption of the mobile terminal; when the current transmission power is too small, the mobile terminal increases the transmission power so as to improve the service quality.
Specifically, first, the base station subtracts the power margin from the maximum transmission power of the mobile terminal to obtain the current transmission power of the mobile terminal; then, the current transmission power is subtracted by the receiving power of the base station to obtain the path loss; and finally, determining a target value of the signal-to-noise ratio according to the path loss, comparing the target value with the signal-to-noise ratio obtained by current measurement, and determining whether the sending power is too large or too small. If the signal-to-noise ratio obtained by current measurement is larger than the target value of the signal-to-noise ratio, the transmission power is overlarge; if the signal-to-noise ratio obtained by current measurement is smaller than the target value of the signal-to-noise ratio, the transmission power is too small.
In the embodiment of the invention, whether uplink power margin sent by a mobile terminal to a base station is received in a preset time period is determined, and whether the variation of the received power exceeds a preset power threshold is determined based on the received power of a channel detection signal at a first specified time and a second specified time; if the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period and/or the variation of the receiving power of the channel detection signal exceeds a preset power threshold, sending a scheduling instruction to the mobile terminal to inform the mobile terminal to report the power headroom of the mobile terminal to the base station. Therefore, the problem that the service quality of the current mobile terminal or other mobile terminals is reduced due to the fact that power control cannot be carried out in time in the prior art is solved, and the beneficial effect that the power control can be carried out in time to improve the service quality of the current mobile terminal and other mobile terminals is achieved. In addition, a scheduling instruction for reporting the power headroom to the mobile terminal may be preferentially sent, so as to determine the power headroom as soon as possible for power control.
EXAMPLE III
Referring to fig. 3, a block diagram of a third embodiment of a scheduling apparatus for power headroom according to the present invention is shown, which may specifically include the following modules:
an anomaly determination module 301, configured to determine whether an uplink power headroom sent by the mobile terminal to the base station is received within a preset time period, and determine whether a variation of the received power exceeds a preset power threshold based on the received power of the channel sounding signal at the first specified time and the second specified time.
A scheduling instruction sending module 302, configured to send a scheduling instruction to the mobile terminal to notify the mobile terminal to report the power headroom of the mobile terminal to the base station if the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period and/or a variation of the received power of the channel sounding signal exceeds a preset power threshold.
In the embodiment of the present invention, it may be determined whether an uplink power headroom sent by a mobile terminal to a base station is received within a preset time period, and based on a received power of a channel sounding signal at a first specified time and a second specified time, it is determined whether a variation of the received power exceeds a preset power threshold; if the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period and/or the variation of the receiving power of the channel detection signal exceeds a preset power threshold, sending a scheduling instruction to the mobile terminal to inform the mobile terminal to report the power headroom of the mobile terminal to the base station. Therefore, the problem that the service quality of the current mobile terminal or other mobile terminals is reduced due to the fact that power control cannot be carried out in time in the prior art is solved, and the beneficial effect that the power control can be carried out in time to improve the service quality of the current mobile terminal and other mobile terminals is achieved.
Example four
Referring to fig. 4, a block diagram of a fourth embodiment of a scheduling apparatus for power headroom according to the present invention is shown, which may specifically include the following modules:
an anomaly determination module 401, configured to determine whether an uplink power headroom sent by the mobile terminal to the base station is received within a preset time period, and determine whether a variation of the received power exceeds a preset power threshold based on the received power of the channel sounding signal at the first specified time and the second specified time. Optionally, in an embodiment of the present invention, the abnormality determining module 401 includes:
and the timer starting module 4011 is configured to start a timer to record current time if uplink power headroom sent by the mobile terminal to the base station is received, where the timeout time of the timer is within a preset time period after the timer is started.
The data receiving and determining submodule 4012 is configured to determine that the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period if the timer is overtime and the uplink power headroom sent by the mobile terminal to the base station is not received again.
The received power determining submodule 4013 is configured to receive a channel sounding signal reported by the mobile terminal, and determine received power of the channel sounding signal at the first specified time and the second specified time to obtain a first received power and a second received power.
And a power difference value operator module 4014, configured to calculate a difference value between the first received power and the second received power.
And the power difference judgment sub-module 4015 is configured to judge whether an absolute value of the difference is greater than or equal to a preset power threshold.
A scheduling instruction sending module 402, configured to send a scheduling instruction to the mobile terminal if an uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period and/or a variation of the received power of the channel sounding signal exceeds a preset power threshold, so as to notify the mobile terminal to report the power headroom of the mobile terminal to the base station. Optionally, in an embodiment of the present invention, the scheduling instruction sending module 402 includes:
the scheduling instruction sending sub-module 4021 is configured to send a scheduling instruction to the mobile terminal preferentially before sending a general scheduling instruction, so as to notify the mobile terminal to report the power headroom of the mobile terminal to the base station.
A power control instruction sending module 403, configured to, if a power headroom reported by the mobile terminal is received, issue a power control instruction to the mobile terminal according to the power headroom.
In the embodiment of the present invention, it may be determined whether an uplink power headroom sent by a mobile terminal to a base station is received within a preset time period, and based on a received power of a channel sounding signal at a first specified time and a second specified time, it is determined whether a variation of the received power exceeds a preset power threshold; if the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period and/or the variation of the receiving power of the channel detection signal exceeds a preset power threshold, sending a scheduling instruction to the mobile terminal to inform the mobile terminal to report the power headroom of the mobile terminal to the base station. Therefore, the problem that the service quality of the current mobile terminal or other mobile terminals is reduced due to the fact that power control cannot be carried out in time in the prior art is solved, and the beneficial effect that the power control can be carried out in time to improve the service quality of the current mobile terminal and other mobile terminals is achieved. In addition, a scheduling instruction for reporting the power headroom to the mobile terminal may be preferentially sent, so as to determine the power headroom as soon as possible for power control.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose systems may also be used with this teaching. The required structure for constructing such a system will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
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 functions of some or all of the components in the scheduling apparatus of power headroom 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.
Claims (10)
1. A method for scheduling power headroom, comprising:
determining whether uplink power headroom sent by a mobile terminal to a base station is received in a preset time period, and determining whether the variation of the received power exceeds a preset power threshold value based on the received power of a channel detection signal in a first specified time and a second specified time;
if the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period and/or the variation of the receiving power of the channel detection signal exceeds a preset power threshold, sending a scheduling instruction to the mobile terminal to inform the mobile terminal to report the power headroom of the mobile terminal to the base station.
2. The method of claim 1, wherein the step of determining whether the variation of the received power exceeds a preset power threshold based on the received power of the channel sounding signal at the first specified time and the second specified time comprises:
receiving a channel detection signal reported by a mobile terminal, and determining the receiving power of the channel detection signal at a first designated time and a second designated time to obtain a first receiving power and a second receiving power;
calculating a difference between the first received power and the second received power;
and judging whether the absolute value of the difference value is greater than or equal to a preset power threshold value.
3. The method according to claim 1 or 2, wherein the step of sending a scheduling command to the mobile terminal to notify the mobile terminal to report the power headroom of the mobile terminal to a base station comprises:
and before sending the common scheduling instruction, preferentially sending the scheduling instruction to the mobile terminal so as to inform the mobile terminal to report the power headroom of the mobile terminal to a base station.
4. The method of claim 3, wherein the step of determining whether the uplink power headroom sent by the mobile terminal to the base station is received within a preset time period comprises:
if receiving an uplink power margin sent by a mobile terminal to a base station, starting/restarting a timer to record the current time, wherein the overtime time of the timer is within a preset time period after the timer is started;
and if the timer is overtime and does not receive the uplink power headroom sent by the mobile terminal to the base station again, determining that the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period.
5. The method of claim 4, wherein after the step of sending a scheduling command to the mobile terminal to notify the mobile terminal to report the power headroom of the mobile terminal to a base station, the method further comprises:
and if the power allowance reported by the mobile terminal is received, transmitting a power control instruction to the mobile terminal according to the power allowance.
6. An apparatus for scheduling power headroom, comprising:
the system comprises an abnormality judgment module, a power control module and a power control module, wherein the abnormality judgment module is used for determining whether uplink power allowance sent by a mobile terminal to a base station is received within a preset time period, and determining whether the variation of the received power exceeds a preset power threshold value based on the received power of a channel detection signal at a first designated time and a second designated time;
and the scheduling instruction sending module is used for sending a scheduling instruction to the mobile terminal to inform the mobile terminal to report the power headroom of the mobile terminal to the base station if the uplink power headroom sent by the mobile terminal to the base station is not received within a preset time period and/or the variation of the received power of the channel detection signal exceeds a preset power threshold.
7. The apparatus of claim 6, wherein the anomaly determination module comprises:
the receiving power determining submodule is used for receiving the channel detection signal reported by the mobile terminal and determining the receiving power of the channel detection signal at the first designated time and the second designated time to obtain a first receiving power and a second receiving power;
the power difference value calculating submodule is used for calculating the difference value of the first receiving power and the second receiving power;
and the power difference value judgment submodule is used for judging whether the absolute value of the difference value is greater than or equal to a preset power threshold value.
8. The apparatus according to claim 6 or 7, wherein the scheduling instruction sending module comprises:
and the scheduling instruction sending submodule is used for preferentially sending a scheduling instruction to the mobile terminal before sending the common scheduling instruction so as to inform the mobile terminal to report the power headroom of the mobile terminal to the base station.
9. The apparatus of claim 8, wherein the anomaly determination module comprises:
the timer starting submodule is used for starting a timer to record the current time if uplink power allowance sent to the base station by the mobile terminal is received, and the overtime time of the timer is within a preset time period after the timer is started;
and the data receiving and judging submodule is used for determining that the uplink power headroom sent by the mobile terminal to the base station is not received in a preset time period if the timer is overtime and the uplink power headroom sent by the mobile terminal to the base station is not received again.
10. The apparatus of claim 9, further comprising:
and the power control instruction sending module is used for sending a power control instruction to the mobile terminal according to the power allowance if the power allowance reported by the mobile terminal is received.
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| CN115883716A (en) * | 2021-09-28 | 2023-03-31 | 中国移动通信集团设计院有限公司 | Terminal control method, device and equipment |
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