CN108901063B - Power control method, device, base station and storage medium for aggregated carriers - Google Patents
Power control method, device, base station and storage medium for aggregated carriers Download PDFInfo
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- CN108901063B CN108901063B CN201810680737.0A CN201810680737A CN108901063B CN 108901063 B CN108901063 B CN 108901063B CN 201810680737 A CN201810680737 A CN 201810680737A CN 108901063 B CN108901063 B CN 108901063B
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- 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
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
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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 invention relates to a power control method, a system, a base station and a storage medium for aggregated carriers. The method comprises the following steps: acquiring a power margin value of each component carrier of the aggregated carriers; when the maximum transmitting power of each component carrier is judged to be required to be adjusted according to each power margin value, acquiring the data volume, the channel quality value and the link loss value of each component carrier; and adjusting the maximum transmitting power of each component carrier according to the data quantity, the channel quality value and the link loss value of each component carrier. By adopting the method, the utilization rate of the power resource can be improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a power control method and apparatus for aggregated carriers, a base station, and a storage medium.
Background
In order to satisfy the requirement that Long Term Evolution-Advanced (LTE-a) supports a peak rate of 1Gbit/s downlink and 500Mbit/s uplink, a transmission bandwidth needs to reach 100MHz, however, in practice, there are few continuous available spectrum resources, so in the Long Term Evolution-enhanced technology, a Carrier Aggregation (CA) technology is adopted to aggregate a plurality of Component carriers (Component carriers, CCs) to achieve high-bandwidth transmission.
In a carrier aggregation scenario, when a plurality of component carriers are configured for a user and a Secondary serving Cell (SCell) in the component carriers is in an active state, a base station may send and receive data to the user on a primary serving Cell (PCell) and the SCell, at this time, according to a direction of a communication link, power control of carrier aggregation may still be divided into uplink power control and downlink power control, and the uplink power control follows the same principle as that of an R8/9 single carrier, and considering different frequency bands or different interference scenarios, independent power control needs to be performed on each component carrier.
According to the protocol, each component carrier is configured with a maximum transmitting power PCMAX,cAnd the total maximum transmission power P is also configured for one userCMAXWhen the transmission power of the user on a certain CC exceeds the CC maximum transmission power PCMAX,cOr the total uplink transmitting power of the users exceeds the total maximum transmitting power P of the usersCMAXIn this case, power reduction needs to be performed on all component carriers or all component carriers in the whole aggregated carrier until the transmission power satisfies the component carriers orThe process is called an uplink transmission power reduction process until the total power upper limit of the users is required. According to the protocol, if the sum of the transmission powers of a plurality of component carriers exceeds the maximum transmission power of a user, then hierarchical power reduction is performed according to the channel type and the transmitted information, which is mainly embodied in that: simultaneous transmission of a Physical Uplink Control Channel (PUCCH) and a Physical Uplink Shared Channel (PUSCH) may affect the transmit power of a user. The control information is critical to correctly receive data, and unlike the physical uplink shared channel, the physical uplink control channel cannot use Hybrid Automatic Repeat Request (HARQ), so the transmission power of the physical uplink control channel has priority over the physical uplink shared channel. Therefore, the required power is first set for the physical uplink control channel, and the rest power is used for the physical uplink shared channel transmission. Similarly, in the transmission process of the physical uplink shared channel, the physical uplink shared channel carrying the control information has higher priority than the physical uplink shared channel not carrying the control information. When a user reaches its maximum transmit power, it first adjusts the power of the physical uplink shared channel without control information downward, the downward factor being typically the same for all component carriers.
In the conventional technology, the maximum transmission power P of each component carrier is configuredCMAX,cDirectly equal to the maximum transmission power P of the userCMAXTherefore, when the sum of the transmission powers of the multiple component carriers exceeds the maximum transmission power of the user, the user can reduce the transmission power of each component carrier by using the same down-regulation factor, which easily causes that the uplink throughput of the user cannot be improved to the maximum extent, and wastes power resources, and the utilization rate of the power resources is low.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a power control method, apparatus, base station and storage medium for aggregated carriers, which can improve the utilization rate of power resources.
A method of power control for aggregated carriers, the method comprising:
acquiring a power margin value of each component carrier of the aggregated carriers;
when the maximum transmitting power of each component carrier is judged to be required to be adjusted according to each power margin value, acquiring the data volume, the channel quality value and the link loss value of each component carrier;
and adjusting the maximum transmitting power of each component carrier according to the data quantity, the channel quality value and the link loss value of each component carrier.
In one embodiment, the method for controlling power of aggregated carriers further includes:
and when the maximum transmitting power of each component carrier does not need to be adjusted according to each power headroom value, keeping the original value of the maximum transmitting power of each component carrier.
In one embodiment, the adjusting the maximum transmission power of each component carrier according to the data amount, the channel quality value, and the link loss value of each component carrier includes:
acquiring a total maximum transmission power value of user equipment corresponding to the aggregation carrier;
determining a power adjustment weight value of each component carrier according to the data volume, the channel quality value and the link loss value of each component carrier;
determining a new value of the maximum transmission power of each component carrier according to each power adjustment weight value and the total maximum transmission power value;
and respectively adjusting the original value of the maximum transmitting power of each component carrier to the new value of the maximum transmitting power of the corresponding component carrier.
In one embodiment, the determining the power adjustment weight value of each component carrier according to the data amount, the channel quality value, and the link loss value of each component carrier includes:
according to
Determining a power adjustment weight value of each component carrier;
wherein, PiPower adjustment weight value, T, representing ith component carrieriData quantity, S, representing the ith component carrieriRepresenting the channel quality, L, of the ith component carrieriRepresents the link loss of the ith component carrier, and N represents the number of component carriers of the aggregated carrier.
In one embodiment, the method for controlling power of aggregated carriers further includes:
acquiring a power margin threshold value of each component carrier;
comparing each power margin value with a power margin threshold value of a corresponding component carrier respectively;
when the power margin value of at least one component carrier is smaller than the corresponding power margin threshold value, the maximum transmitting power of each component carrier is judged to need to be adjusted;
and when the power margin value of each component carrier is not smaller than the corresponding power margin threshold value, judging that the maximum transmitting power of each component carrier does not need to be adjusted.
In one embodiment, the obtaining the power headroom threshold of each component carrier includes: and acquiring an original value of the maximum transmitting power of each component carrier, and multiplying the original value of the maximum transmitting power of each component carrier by a preset adjusting threshold value respectively to obtain a power margin threshold value of each component carrier.
An apparatus for power control of aggregated carriers, the apparatus comprising:
the first data acquisition module is used for acquiring the power margin value of each component carrier of the aggregated carrier;
a second data obtaining module, configured to obtain a data amount, a channel quality value, and a link loss value of each component carrier when it is determined that the maximum transmission power of each component carrier needs to be adjusted according to each power headroom value;
and the power control module is used for adjusting the maximum transmitting power of each component carrier according to the data volume, the channel quality value and the link loss value of each component carrier.
In one embodiment, the power control module is further configured to maintain an original value of the maximum transmission power of each component carrier when it is determined that the maximum transmission power of each component carrier does not need to be adjusted according to each power headroom value.
A base station comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor when executing the computer program implementing the steps of:
acquiring a power margin value of each component carrier of the aggregated carriers;
when the maximum transmitting power of each component carrier is judged to be required to be adjusted according to each power margin value, acquiring the data volume, the channel quality value and the link loss value of each component carrier;
and adjusting the maximum transmitting power of each component carrier according to the data quantity, the channel quality value and the link loss value of each component carrier.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
acquiring a power margin value of each component carrier of the aggregated carriers;
when the maximum transmitting power of each component carrier is judged to be required to be adjusted according to each power margin value, acquiring the data volume, the channel quality value and the link loss value of each component carrier;
and adjusting the maximum transmitting power of each component carrier according to the data quantity, the channel quality value and the link loss value of each component carrier.
The power control method, the device, the base station and the storage medium of the aggregated carrier acquire the power margin value of each component carrier of the aggregated carrier, acquire the data volume, the channel quality value and the link loss value of each component carrier when the maximum transmission power of each component carrier needs to be adjusted according to each power margin value, and adjust the maximum transmission power of each component carrier according to the data volume, the channel quality value and the link loss value of each component carrier, because the channel quality difference among different component carriers, the data volume difference carried by a user and the link loss difference of different component carriers are considered, the power control mode of the aggregated carrier combining multiple factors can improve the utilization rate of power resources, and simultaneously, because whether the maximum transmission power of each component carrier needs to be adjusted is judged based on the power margin, and only when the maximum transmitting power of each component carrier needs to be adjusted is the adjustment of the maximum transmitting power of the component carrier performed, and the maximum transmitting power of the component carrier is updated according to the data volume, the channel quality and the link loss of the component carrier, so that the times of adjusting the power parameters can be reduced to the maximum extent, the signaling overhead is reduced, and the base station overhead is reduced.
Drawings
Fig. 1 is a diagram of an application environment of a power control method for aggregated carriers in an embodiment;
fig. 2 is a flowchart illustrating a power control method for aggregated carriers according to an embodiment;
FIG. 3 is a flowchart illustrating the step S203 according to an embodiment;
fig. 4 is a flowchart illustrating a power control method for aggregated carriers in another embodiment;
fig. 5 is a block diagram of a power control apparatus for aggregating carriers in an embodiment;
fig. 6 is an internal structural diagram of a base station in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The power control method of aggregated carriers provided by the invention can be applied to the application environment shown in fig. 1. Wherein a Base Station (BS) is a radio, and may also be referred to by those skilled in the art as a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a transceiver function, a basic service set (BSs), an Extended Service Set (ESS), an Access Point (AP), or some other suitable terminology. The base station provides a wireless access point to the core network for any number of terminals. Examples of terminals include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptops, notebooks, netbooks, smartbooks, Personal Digital Assistants (PDAs), satellite radios, Global Positioning System (GPS) devices, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, or any other similar functioning devices. A terminal, typically a mobile device, is commonly referred to as User Equipment (UE) in mobile telecommunications system (UMTS) applications, but may also be referred to by those skilled in the art as a Mobile Station (MS), a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communications device, a remote device, a mobile subscriber station, an Access Terminal (AT), a mobile terminal, a wireless terminal, a remote terminal, a handset, a terminal, a user agent, a mobile client, a client, or some other suitable terminology. Specifically, the base station acquires a power headroom value of each component carrier of the aggregated carrier, acquires a data volume, a channel quality value and a link loss value of each component carrier when determining that the maximum transmission power of each component carrier needs to be adjusted according to each power headroom value, and adjusts the maximum transmission power of each component carrier according to the data volume, the channel quality value and the link loss value of each component carrier.
In an embodiment, as shown in fig. 2, a power control method for aggregated carriers is provided, which is described by taking the method as an example applied to the base station in fig. 1, and includes the following steps:
step S201: acquiring a power margin value of each component carrier of the aggregated carriers;
here, the power headroom value refers to a remaining power value, and indicates a difference between a maximum transmission power value and a used power value of a corresponding component carrier, and the power headroom value is generally reported to the base station by the ue.
Specifically, the base station obtains a power headroom value of each component carrier of an aggregated carrier configured for the user equipment.
Step S202: when the maximum transmitting power of each component carrier is judged to be required to be adjusted according to each power margin value, acquiring the data volume, the channel quality value and the link loss value of each component carrier;
here, the data amount of each component carrier is an average statistical value of the data amount sent by the user equipment on the corresponding component carrier, and may be represented by a buffer size or a resource block size; for example, the data amount of the component carrier 1 is an average statistical value of the data amount transmitted by the user equipment on the component carrier 1;
here, the channel quality values of the component carriers are channel quality values of uplink data sent by the ue on the corresponding component carrier monitored by the base station, and may be measured channel Sounding Reference Signal (SRS) or Signal to Interference plus Noise Ratio (SINR) of PUSCH channel, that is, Signal to Interference plus Noise Ratio; for example, the channel quality value of the component carrier 1 is a channel quality value of uplink data sent by the base station monitoring user equipment on the component carrier 1;
here, the link loss value of each component carrier is a path loss value of the user equipment on the corresponding component carrier, and the frequency of each component carrier may be different, so the path loss of the user on the carrier may also be different; for example, the link loss value of the component carrier 1 is the path loss value of the user equipment on the component carrier 1.
Specifically, when the base station determines that the maximum transmission power of each component carrier needs to be adjusted according to each power headroom value, the base station acquires the data volume, the channel quality value, and the link loss value of each component carrier.
Step S203: and adjusting the maximum transmitting power of each component carrier according to the data quantity, the channel quality value and the link loss value of each component carrier.
Specifically, the base station adjusts the maximum transmission power of each component carrier according to the data amount, the channel quality value, and the link loss value of each component carrier.
In the method for controlling power of aggregated carriers, a power headroom value of each component carrier of the aggregated carriers is obtained, when the maximum transmission power of each component carrier needs to be adjusted is determined according to each power headroom value, a data volume, a channel quality value and a link loss value of each component carrier are obtained, the maximum transmission power of each component carrier is adjusted according to the data volume, the channel quality value and the link loss value of each component carrier, and the resource utilization rate can be improved by considering the channel quality difference among different component carriers, the data volume difference carried by a user and the link loss difference of different component carriers, and meanwhile, because whether the maximum transmission power of each component carrier needs to be adjusted is judged based on the power headroom, the maximum transmission power of the component carriers is adjusted only when the maximum transmission power of each component carrier needs to be adjusted, and the maximum transmitting power of the component carrier is updated according to the data volume, the channel quality and the link loss of the component carrier, so that the times of adjusting the power parameters can be reduced to the maximum extent, the signaling overhead is reduced, and the base station overhead is reduced.
In one embodiment, the method for controlling power of aggregated carriers of the present invention further includes: and when the maximum transmitting power of each component carrier does not need to be adjusted according to each power headroom value, keeping the original value of the maximum transmitting power of each component carrier. Here, the original value refers to the current value.
In this embodiment, when it is determined that the maximum transmission power of each component carrier does not need to be adjusted according to each power headroom value, the maximum transmission power value of each component carrier is not updated, so that the number of times of adjusting the power parameter can be reduced to the maximum, signaling overhead is reduced, and base station overhead is reduced.
In one embodiment, as shown in fig. 3, the adjusting the maximum transmit power of each component carrier according to the data amount, the channel quality value, and the link loss value of each component carrier may include:
step S301: acquiring a total maximum transmission power value of user equipment corresponding to the aggregation carrier;
here, the total maximum work of transmissionThe rate value refers to the total maximum transmit power P configured for the user (alternatively referred to as user equipment)CMAX。
Step S302: determining a power adjustment weight value of each component carrier according to the data volume, the channel quality value and the link loss value of each component carrier;
step S303: determining a new value of the maximum transmission power of each component carrier according to each power adjustment weight value and the total maximum transmission power value;
specifically, each of the power adjustment weight values may be multiplied by the total maximum transmission power value, and the product is a new maximum transmission power value of the corresponding component carrier.
Step S304: and respectively adjusting the original value of the maximum transmitting power of each component carrier to the new value of the maximum transmitting power of the corresponding component carrier.
In this embodiment, the power adjustment weight value of each component carrier is determined according to the data volume, the channel quality value, and the link loss value of each component carrier, a new value of the maximum transmission power of each component carrier is determined according to each power adjustment weight value and the total maximum transmission power value, and the original value of the maximum transmission power of each component carrier is adjusted to the new value of the maximum transmission power of the corresponding component carrier. The maximum utilization of power resources is guaranteed, the throughput of high-quality large-bandwidth large-path-loss users is improved, and therefore the overall uplink throughput of the cell is improved.
In one embodiment, the determining the power adjustment weight value of each component carrier according to the data amount, the channel quality value, and the link loss value of each component carrier may include:
determining a power adjustment weight value of each component carrier according to the following formula (1);
wherein, PiRepresenting the ith component carrierPower adjustment weight value of wave, TiData quantity, S, representing the ith component carrieriRepresenting the channel quality, L, of the ith component carrieriRepresents the link loss of the ith component carrier, N represents the number of component carriers of the aggregated carrier, i is 1, 2.
It should be noted that the method for determining the power adjustment weight value in this embodiment is a better method, and the method in this embodiment is simpler and more convenient. The manner of determining the power adjustment weight values is not limited thereto. Other considerations that may be taken into account in obtaining the power weight ratio of each component carrier include "the data amount of the component carrier, the channel quality value, and the link loss value".
By adopting the scheme in the embodiment, the maximum transmitting power of the component carrier can be increased under the conditions of large data volume, high channel quality and large link loss; otherwise, the maximum transmitting power of the component carrier is reduced, the maximum utilization of power resources is ensured, and the throughput of the user with high quality, large bandwidth and large path loss is improved, so that the uplink overall throughput of the cell is improved.
In an embodiment, as shown in fig. 4, a power control method for aggregated carriers is provided, which is described by taking the method as an example applied to the base station in fig. 1, and includes the following steps:
step S401: acquiring a power margin value of each component carrier of an aggregated carrier and a power margin threshold value of each component carrier;
step S402: comparing each power margin value with a power margin threshold value of a corresponding component carrier respectively;
the power headroom threshold of each component carrier may be the same or different. The size of the power headroom threshold value can be set according to actual needs.
Specifically, the power headroom value of the component carrier 1 is compared with the power headroom threshold of the component carrier 1, the power headroom value of the component carrier 2 is compared with the power headroom threshold of the component carrier 2, and so on.
Step S403: when the power margin value of at least one component carrier is smaller than the corresponding power margin threshold value, the maximum transmitting power of each component carrier is judged to need to be adjusted;
step S404: acquiring the data volume, the channel quality value and the link loss value of each component carrier;
step S405: adjusting the maximum transmitting power of each component carrier according to the data volume, the channel quality value and the link loss value of each component carrier;
step S406: when the power margin value of each component carrier is not smaller than the corresponding power margin threshold value, judging that the maximum transmitting power of each component carrier does not need to be adjusted;
step S407: and maintaining the original value of the maximum transmitting power of each component carrier.
In this embodiment, by comparing the power headroom with a preset threshold, the maximum transmission power of the component carrier is not updated when the power headroom is relatively large; and if the power margin is not large, updating the maximum transmitting power of the component carrier again according to the data volume, the channel quality and the link loss of the component carrier. The mode of judging whether to adjust the maximum transmitting power of the component carrier wave based on the residual power margin can reduce the times of adjusting the power parameters to the maximum extent, reduce signaling cost and reduce base station cost.
In one embodiment, the obtaining of the power headroom threshold value of each component carrier may include: and acquiring an original value of the maximum transmitting power of each component carrier, and multiplying the original value of the maximum transmitting power of each component carrier by a preset adjusting threshold value respectively to obtain a power margin threshold value of each component carrier. For example, the original value of the maximum transmission power of the component carrier 1 is multiplied by a preset adjustment threshold value to obtain a power headroom threshold value of the component carrier 1.
The size of the adjustment threshold value may be set according to actual needs, and generally, the adjustment threshold value is smaller than 1. The preset adjustment threshold affects the frequency of adjusting the maximum transmission power of each component carrier of a user, if the value is too large, the adjustment action is not easy to trigger, and the adjustment significance is affected, and if the value is too small, the adjustment action is frequently triggered, so that the overhead is too large. The value can be taken according to actual needs, and for example, the value can be configured to be 10%.
In order to facilitate understanding of the aspects of the present invention, a specific example is described below. But the specific examples should not be construed as limiting the scope of the invention. In this specific example, the aggregated carrier includes two component carriers, i.e., a component carrier f1 and a component carrier f 2.
It is assumed that the power headroom threshold values corresponding to the two component carriers are both 0 dBm. If the base station judges the power margins of two component carriers of a user, wherein the power margin of the component carrier f1 is less than a power margin threshold value of 0dBm, and the power margin of the other component carrier f2 is not less than the power margin threshold value of 0dBm, but the base station judges that the maximum transmitting powers of the two component carriers of the user need to be adjusted, wherein the data volume, the channel quality value and the link loss value of the component carrier f1 are respectively 50RB, 10dB and 80 dB; the data amount, channel quality value, and link loss value of the component carrier f2 are 10RB, 20dB, 90dB, respectively; the RB refers to a Resource block (Resource block) and represents a data amount.
Then, the power adjustment weight of f1 is 50 × 10 × 80/(50 × 10 × 80+10 × 20 × 90) ═ 0.69, the power weight ratio of f2 is 10 × 20 × 90/(50 × 10 × 80+10 × 20 × 90) ═ 0.31, and finally, the power weight ratio of the maximum transmit power of f1 is f1, the maximum transmit power of the user is 0.69 × 200mw ═ 138mw, that is, 21.4dBm, and the power weight ratio of the maximum transmit power of f2 is f2, that is, 60mw ═ 60mw, that is, 17.8 dBm. Wherein, the total maximum transmitting power value of the user equipment is 23dBm, and is converted into 200 mw.
It should be understood that although the steps in the flowcharts of fig. 2 to 4 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-4 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 5, there is provided an apparatus for power control of aggregated carriers, including: a first data acquisition module 501, a second data acquisition module 502, and a power control module 503, wherein:
a first data obtaining module 501, configured to obtain a power margin value of each component carrier of an aggregated carrier;
a second data obtaining module 502, configured to obtain a data amount, a channel quality value, and a link loss value of each component carrier when it is determined that the maximum transmit power of each component carrier needs to be adjusted according to each power headroom value;
a power control module 503, configured to adjust the maximum transmit power of each component carrier according to the data amount, the channel quality value, and the link loss value of each component carrier.
In one embodiment, the power control module 503 may be further configured to maintain an original value of the maximum transmission power of each component carrier when it is determined that the maximum transmission power of each component carrier does not need to be adjusted according to each power headroom value.
In one embodiment, the power control module 503 may obtain a total maximum transmission power value of the ue corresponding to the aggregated carrier, determine a power adjustment weight value of each component carrier according to a data volume, a channel quality value, and a link loss value of each component carrier, determine a new value of the maximum transmission power of each component carrier according to each power adjustment weight value and the total maximum transmission power value, and adjust an original value of the maximum transmission power of each component carrier to the new value of the maximum transmission power of the corresponding component carrier.
In one embodiment, the power control module 503 may determine the power adjustment weight value of each component carrier according to equation (1) above.
In one embodiment, the second data obtaining module 502 may obtain a power headroom threshold of each component carrier, compare each power headroom value with a corresponding power headroom threshold of the component carrier, determine that the maximum transmission power of each component carrier needs to be adjusted when at least one power headroom value of the component carrier is smaller than the corresponding power headroom threshold, and determine that the maximum transmission power of each component carrier does not need to be adjusted when the power headroom value of each component carrier is not smaller than the corresponding power headroom threshold.
In one embodiment, the second data obtaining module 502 may obtain an original value of the maximum transmission power of each component carrier, and multiply the original value of the maximum transmission power of each component carrier by a preset adjustment threshold value, respectively, to obtain a power headroom threshold value of each component carrier.
For specific limitations of the power control apparatus for aggregated carriers, reference may be made to the above limitations of the power control method for aggregated carriers, which are not described herein again. The modules in the power control device for aggregating carriers can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the base station, and can also be stored in a memory in the base station in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a base station is provided, and fig. 6 is a block diagram of the main hardware construction of the base station. As shown in fig. 6, the base station includes a base station, and the base station includes a bus to which a processor, a memory, an external memory, and the like are connected. The memory of the base station comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The computer program is executed by a processor to implement a method of power control for aggregated carriers. The external memory may be a Hard disk (Hard)
Disk, HD). An input device for inputting various information and the like, a base station GPS device, and a base station communication device may be connected to the bus, and the base station communication device may be configured to communicate with the user equipment and the network side. A display device for displaying various information and the like and a base station clock are connected to the bus.
Base station it will be understood by those skilled in the art that the structure shown in fig. 6 is a block diagram of only a portion of the structure relevant to the present solution and does not constitute a limitation of the base station to which the present solution applies, and a particular base station may include more or less components than those shown in the figure, or combine certain components, or have a different arrangement of components.
In one embodiment, there is provided a base station comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program: acquiring a power margin value of each component carrier of the aggregated carriers; when the maximum transmitting power of each component carrier is judged to be required to be adjusted according to each power margin value, acquiring the data volume, the channel quality value and the link loss value of each component carrier; and adjusting the maximum transmitting power of each component carrier according to the data quantity, the channel quality value and the link loss value of each component carrier.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and when the maximum transmitting power of each component carrier does not need to be adjusted according to each power headroom value, keeping the original value of the maximum transmitting power of each component carrier.
In one embodiment, when the processor executes the computer program to implement the step of adjusting the maximum transmission power of each component carrier according to the data amount, the channel quality value and the link loss value of each component carrier, the processor specifically implements the following steps: acquiring a total maximum transmission power value of user equipment corresponding to the aggregation carrier; determining a power adjustment weight value of each component carrier according to the data volume, the channel quality value and the link loss value of each component carrier; determining a new value of the maximum transmission power of each component carrier according to each power adjustment weight value and the total maximum transmission power value; and respectively adjusting the original value of the maximum transmitting power of each component carrier to the new value of the maximum transmitting power of the corresponding component carrier.
In one embodiment, when the processor executes the computer program to implement the step of determining the power adjustment weight value of each component carrier according to the data amount, the channel quality value and the link loss value of each component carrier, the following steps are specifically implemented: the power adjustment weight value of each of the component carriers is determined according to the above formula (1).
In one embodiment, the processor, when executing the computer program, further performs the steps of: acquiring a power margin threshold value of each component carrier; comparing each power margin value with a power margin threshold value of a corresponding component carrier respectively; when the power margin value of at least one component carrier is smaller than the corresponding power margin threshold value, the maximum transmitting power of each component carrier is judged to need to be adjusted; and when the power margin value of each component carrier is not smaller than the corresponding power margin threshold value, judging that the maximum transmitting power of each component carrier does not need to be adjusted.
In an embodiment, when the processor executes the computer program to implement the step of obtaining the power headroom threshold value of each component carrier, the following steps are specifically implemented: and acquiring an original value of the maximum transmitting power of each component carrier, and multiplying the original value of the maximum transmitting power of each component carrier by a preset adjusting threshold value respectively to obtain a power margin threshold value of each component carrier.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of: acquiring a power margin value of each component carrier of the aggregated carriers; when the maximum transmitting power of each component carrier is judged to be required to be adjusted according to each power margin value, acquiring the data volume, the channel quality value and the link loss value of each component carrier; and adjusting the maximum transmitting power of each component carrier according to the data quantity, the channel quality value and the link loss value of each component carrier.
In one embodiment, the computer program when executed by the processor further performs the steps of: and when the maximum transmitting power of each component carrier does not need to be adjusted according to each power headroom value, keeping the original value of the maximum transmitting power of each component carrier.
In one embodiment, the computer program when executed by the processor performs the step of adjusting the maximum transmit power of each of the component carriers based on the data amount, the channel quality value, and the link loss value of each of the component carriers, implements the steps of: acquiring a total maximum transmission power value of user equipment corresponding to the aggregation carrier; determining a power adjustment weight value of each component carrier according to the data volume, the channel quality value and the link loss value of each component carrier; determining a new value of the maximum transmission power of each component carrier according to each power adjustment weight value and the total maximum transmission power value; and respectively adjusting the original value of the maximum transmitting power of each component carrier to the new value of the maximum transmitting power of the corresponding component carrier.
In one embodiment, when the computer program is executed by the processor to determine the power adjustment weight value of each component carrier according to the data volume, the channel quality value and the link loss value of each component carrier, the following steps are specifically implemented: the power adjustment weight value of each of the component carriers is determined according to the above formula (1).
In one embodiment, the computer program when executed by the processor further performs the steps of: acquiring a power margin threshold value of each component carrier; comparing each power margin value with a power margin threshold value of a corresponding component carrier respectively; when the power margin value of at least one component carrier is smaller than the corresponding power margin threshold value, the maximum transmitting power of each component carrier is judged to need to be adjusted; and when the power margin value of each component carrier is not smaller than the corresponding power margin threshold value, judging that the maximum transmitting power of each component carrier does not need to be adjusted.
In one embodiment, when the computer program is executed by the processor to perform the steps included in acquiring the power headroom threshold of each of the component carriers, the following steps are specifically implemented: and acquiring an original value of the maximum transmitting power of each component carrier, and multiplying the original value of the maximum transmitting power of each component carrier by a preset adjusting threshold value respectively to obtain a power margin threshold value of each component carrier.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, databases, or other media used in embodiments provided herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A method for power control of aggregated carriers, the method comprising:
acquiring a power margin value of each component carrier of the aggregated carriers;
when the maximum transmitting power of each component carrier is judged to be required to be adjusted according to each power margin value, acquiring the data volume, the channel quality value and the link loss value of each component carrier;
determining a power adjustment weight value of each component carrier according to the data volume, the channel quality value and the link loss value of each component carrier;
determining a new value of the maximum transmission power of each component carrier according to each power adjustment weight value and the total maximum transmission power value;
and respectively adjusting the original value of the maximum transmitting power of each component carrier to the new value of the maximum transmitting power of the corresponding component carrier.
2. The method for power control of aggregated carriers of claim 1, wherein the method further comprises:
and when the maximum transmitting power of each component carrier does not need to be adjusted according to each power headroom value, keeping the original value of the maximum transmitting power of each component carrier.
3. The method of claim 1, wherein determining the power adjustment weight value of each component carrier according to the data amount, the channel quality value and the link loss value of each component carrier comprises:
according to
Determining a power adjustment weight value of each component carrier;
wherein, PiPower adjustment weight value, T, representing ith component carrieriData quantity, S, representing the ith component carrieriRepresenting the channel quality, L, of the ith component carrieriRepresents the link loss of the ith component carrier, and N represents the number of component carriers of the aggregated carrier.
4. The method for power control of aggregated carriers according to claim 1 or 2, wherein the method further comprises:
acquiring a power margin threshold value of each component carrier;
comparing each power margin value with a power margin threshold value of a corresponding component carrier respectively;
when the power margin value of at least one component carrier is smaller than the corresponding power margin threshold value, the maximum transmitting power of each component carrier is judged to need to be adjusted;
and when the power margin value of each component carrier is not smaller than the corresponding power margin threshold value, judging that the maximum transmitting power of each component carrier does not need to be adjusted.
5. The method according to claim 1 or 2, wherein the obtaining the power headroom threshold of each of the component carriers comprises: and acquiring an original value of the maximum transmitting power of each component carrier, and multiplying the original value of the maximum transmitting power of each component carrier by a preset adjusting threshold value respectively to obtain a power margin threshold value of each component carrier.
6. An apparatus for power control of aggregated carriers, the apparatus comprising:
the first data acquisition module is used for acquiring the power margin value of each component carrier of the aggregated carrier;
a second data obtaining module, configured to obtain a data amount, a channel quality value, and a link loss value of each component carrier when it is determined that the maximum transmission power of each component carrier needs to be adjusted according to each power headroom value;
the power control module is used for determining a power adjustment weighted value of each component carrier according to the data volume, the channel quality value and the link loss value of each component carrier; determining a new value of the maximum transmission power of each component carrier according to each power adjustment weight value and the total maximum transmission power value; and respectively adjusting the original value of the maximum transmitting power of each component carrier to the new value of the maximum transmitting power of the corresponding component carrier.
7. The apparatus for power control of aggregated carriers of claim 6, wherein:
the power control module is further configured to maintain an original value of the maximum transmission power of each component carrier when it is determined that the maximum transmission power of each component carrier does not need to be adjusted according to each power headroom value.
8. A base station comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of any of claims 1 to 5 are implemented when the computer program is executed by the processor.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 5.
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