CN111918375A - Uplink power control method, device, storage medium and base station - Google Patents
Uplink power control method, device, storage medium and base station Download PDFInfo
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- CN111918375A CN111918375A CN201910381298.8A CN201910381298A CN111918375A CN 111918375 A CN111918375 A CN 111918375A CN 201910381298 A CN201910381298 A CN 201910381298A CN 111918375 A CN111918375 A CN 111918375A
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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
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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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
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
Abstract
The embodiment of the invention provides an uplink power control method, an uplink power control device, a storage medium and a base station. In the technical scheme provided by the embodiment of the invention, whether the sum of the interference levels of each resource block in the adjacent cell and the resource block at the same position in the service cell is greater than or equal to a first threshold value or not is judged by acquiring the interference level of each resource block in the adjacent cell, the current uplink transmitting power of the user equipment is adjusted according to the judgment result, the accurate uplink power control of the single user equipment is realized, the mutual interference between the cells and the dead cycle of the power control algorithm falling into the repeated power control can be prevented, the balance between the cells is ensured, and the perception of a user is improved.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to the field of wireless communications technologies, and in particular, to an uplink power control method, apparatus, storage medium, and base station.
[ background of the invention ]
Interference is one of important factors influencing a network, has great influence on call quality, call drop, switching and downloading speed, and how to reduce and eliminate the interference is an important task of network planning and optimization. External interference can be solved by troubleshooting positioning, and in-network interference needs to be balanced through parameter setting so as to achieve the best effect. With the rapid deployment of a Time Division Long Term Evolution (TD-LTE) network, the requirement of rapid explosive growth of data traffic on network coverage and capacity is higher and higher. Meanwhile, a large number of multi-system wireless networks have shared resources, the radius of network cells is smaller and smaller, and network interference is raised continuously. The interference problem is more and more complex, which seriously affects the user experience and also puts pressure on the optimization of the operator network.
Traditional power control algorithms usually perform power control through partial path loss compensation based on path loss and user signal-to-interference-and-noise ratio, the algorithms lack consideration of mutual interference among users using the same frequency resources among cells, and some power control algorithms often fall into a dead cycle of repeated power control, so that the balance among the cells cannot be guaranteed, and user perception is influenced.
[ summary of the invention ]
In view of this, embodiments of the present invention provide an uplink power control method, apparatus, storage medium, and base station, which can prevent inter-cell interference and a power control algorithm from falling into a dead cycle of repeated power control, and ensure balance between cells, thereby improving user perception.
In a first aspect, an embodiment of the present invention provides an uplink power control method, where the method includes:
obtaining the interference level of each resource block in the adjacent cell;
judging whether the sum of the interference levels of the resource blocks at the same position in the adjacent cell and the serving cell is greater than or equal to a first threshold value;
if the sum of the interference levels of the resource blocks at the same positions in the adjacent cell and the serving cell is judged to be smaller than the first threshold, adding the current uplink transmitting power of the user equipment and a preset first power step length to generate a first uplink transmitting power of the user equipment;
judging whether the first uplink transmitting power is larger than or equal to the maximum uplink transmitting power of the user equipment or not;
and if the first uplink transmitting power is judged to be greater than or equal to the maximum uplink transmitting power, the first uplink transmitting power is sent to the user equipment, so that the user equipment transmits data at the first uplink transmitting power.
Optionally, if it is determined that the sum of the interference levels of the resource blocks at the same positions in the adjacent cell and the serving cell is greater than or equal to the first threshold, subtracting a preset second power step from the current uplink transmission power of the user equipment to generate a second uplink transmission power of the user equipment, and continuing to perform the step of obtaining the interference level of each resource block in the adjacent cell.
Optionally, the first power step is equal to the second power step.
Optionally, if it is determined that the first uplink transmission power is less than the maximum uplink transmission power, the step of obtaining the interference level of each resource block in the adjacent cell is continuously performed.
Optionally, before the obtaining the interference level of each resource block in the adjacent cell, the method further includes:
and acquiring initial uplink transmitting power of the user equipment, wherein the initial uplink transmitting power is the current transmitting power.
Optionally, the obtaining the interference level of each resource block in the neighboring cell includes:
obtaining the interference power of each resource block in an adjacent cell and the average thermal noise of all the resource blocks in a frequency spectrum bandwidth;
dividing the interference power of each resource block by the average thermal noise of all the resource blocks in a frequency spectrum bandwidth to calculate the interference overload indication information of each resource block;
judging whether the interference overload indication information of the resource block is smaller than a second threshold and larger than a third threshold;
if the interference overload indication information of the resource block is judged to be larger than a second threshold value, the interference level of the resource block is set to be a first set value;
if the interference overload indication information of the resource block is judged to be larger than or equal to a third threshold value and smaller than or equal to the second threshold value, the interference level of the resource block is set to be a second set value;
and if the interference overload indication information of the resource block is judged to be smaller than the third threshold value, setting the interference level of the resource block as a third set value.
Optionally, the first set value is greater than the second set value, and the second set value is greater than the third set value.
In another aspect, an embodiment of the present invention provides an uplink power control apparatus, where the apparatus includes:
a first obtaining module, configured to obtain an interference level of each resource block in an adjacent cell;
a first judging module, configured to judge whether a sum of interference levels of the resource blocks at the same position in the neighboring cell and the serving cell is greater than or equal to a first threshold;
a first calculating module, configured to add a current uplink transmission power of a user equipment and a preset first power step length to generate a first uplink transmission power of the user equipment if the first determining module determines that a sum of interference levels of the resource blocks at the same positions in the adjacent cell and the serving cell is smaller than the first threshold;
a second judging module, configured to judge whether the first uplink transmission power is greater than or equal to a maximum uplink transmission power of the ue;
a sending module, configured to send the first uplink transmission power to the user equipment if the second determining module determines that the first uplink transmission power is greater than or equal to the maximum uplink transmission power, so that the user equipment transmits data at the first uplink transmission power;
on the other hand, an embodiment of the present invention provides a storage medium, where the storage medium includes a stored program, and when the program runs, a device in which the storage medium is located is controlled to execute the uplink power control method.
In another aspect, an embodiment of the present invention provides a base station, including a memory and a processor, where the memory is configured to store information including program instructions, and the processor is configured to control execution of the program instructions, where the program instructions are loaded and executed by the processor to implement the steps of the uplink power control method.
In the technical scheme of the uplink power control method, the device, the storage medium and the base station provided by the embodiment of the invention, whether the sum of the interference levels of the resource blocks at the same positions in the adjacent cell and the serving cell is greater than or equal to a first threshold value or not is judged by obtaining the interference level of each resource block in the adjacent cell, the current uplink transmitting power of the user equipment is adjusted according to the judgment result, the accurate uplink power control of the single user equipment is realized, the mutual interference between the cells and the dead cycle of the power control algorithm falling into the repeated power control can be prevented, the balance between the cells is ensured, and the perception of users is improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a flowchart of an uplink power control method according to an embodiment of the present invention;
fig. 2 is a flowchart of an uplink power control method according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of uplink power control according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a base station according to an embodiment of the present invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., A and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Fig. 1 is a flowchart of an uplink power control method according to an embodiment of the present invention, and as shown in fig. 1, the method includes:
step 101, obtaining an interference level of each resource Block (RB for short) in an adjacent cell.
And 102, judging whether the sum of the interference levels of the resource blocks at the same position in the adjacent cell and the service cell is greater than or equal to a first threshold value.
Step 103, if it is determined that the sum of the interference levels of the resource blocks at the same positions in the adjacent cell and the serving cell is smaller than the first threshold, adding a current uplink transmission power of a User Equipment (User Equipment, abbreviated as UE) to a preset first power step length to generate a first uplink transmission power of the User Equipment.
And 104, judging whether the first uplink transmitting power is greater than or equal to the maximum uplink transmitting power of the user equipment.
Step 105, if it is determined that the first uplink transmission power is greater than or equal to the maximum uplink transmission power, sending the first uplink transmission power to the user equipment, so that the user equipment transmits data at the first uplink transmission power.
In the technical scheme of the uplink power control method provided in this embodiment, whether the sum of the interference levels of the resource blocks at the same position in the adjacent cell as in the serving cell is greater than or equal to a first threshold is determined by obtaining the interference level of each resource block in the adjacent cell, and the current uplink transmit power of the user equipment is adjusted according to the determination result, so that accurate uplink power control is performed on a single user equipment, mutual interference between cells and a power control algorithm falling into a dead cycle of repeated power control can be prevented, the balance between cells is ensured, and the user perception is improved.
Fig. 2 is a flowchart of an uplink power control method according to another embodiment of the present invention, as shown in fig. 2, the method includes:
step 201, obtaining the initial uplink transmitting power of the user equipment.
Each step in this embodiment may be performed by a base station (eNodeB).
In this embodiment, when the process of this embodiment is executed for the first time, the initial uplink transmission power of the user needs to be obtained, and the initial uplink transmission power is used as the current transmission power. Namely: the obtained initial uplink transmission power is only used for calculating the first uplink transmission power or the second uplink transmission power of the user equipment for the first time in the uplink power control method of the embodiment.
In this embodiment, step 201 specifically includes:
receiving a Power Headroom Report (PHR for short) periodically sent by a user equipment to obtain an initial uplink transmission Power of the user equipment, wherein the Power Headroom is a difference between a maximum transmission Power of the user equipment and the initial uplink transmission Power of the user equipment, and therefore the difference between the maximum transmission Power of the user equipment and the Power Headroom is the initial uplink transmission Power of the user equipment. Namely: the initial uplink transmission power of the user equipment is the maximum transmission power of the user equipment-the power margin.
Step 202, obtaining the interference level of each resource block in the adjacent cell.
The resource block is the smallest physical resource unit that the data channel of the wireless side can be scheduled, and is also the smallest scheduling unit of a Long Term Evolution (LTE) system, and the uplink and downlink traffic channels are scheduled by using the resource block as a unit.
In this embodiment, step 202 specifically includes:
step 2021, obtaining the interference power of each resource block in the adjacent cell and the average thermal noise of all the resource blocks in the frequency spectrum bandwidth.
Wherein, the base station can measure the interference power of each resource block and the average thermal noise of all resource blocks in the spectrum bandwidth through the self-scanning procedure.
Step 2022, calculating interference Overload Indication (OI) information of each resource block by dividing the interference power of each resource block by the average thermal noise of all the resource blocks within the frequency spectrum bandwidth.
Step 2022, determining whether the interference overload indication information of the resource block is less than or equal to a second threshold and greater than or equal to a third threshold, and if it is determined that the interference overload indication information of the resource block is greater than the second threshold, executing step 2023; if it is determined that the interference overload indication information of the resource block is greater than or equal to a third threshold and less than or equal to the second threshold, execute step 2024; if it is determined that the interference overload indication information of the resource block is smaller than the third threshold, execute step 2025.
Step 2023, set the interference level of the resource block to a first setting value.
Step 2024, set the interference level of the resource block to a second set value.
Step 2025, set the interference level of the resource block to a third setting value.
In this embodiment, the first set value is greater than the second set value, and the second set value is greater than the third set value.
And the base station acquires the interference level of each resource block in the adjacent cell through the information interaction of the X2 interface.
Step 203, judging whether the sum of the interference levels of the resource blocks at the same positions in the adjacent cells and the serving cell is greater than or equal to a first threshold, if so, executing step 204; if not, go to step 205.
The resource block at the same position in the adjacent cell and the serving cell refers to a resource block commonly used by the serving cell and the adjacent cell. For example, there are 100 resource blocks in total, which are numbered 1, 2, …, and 100, each resource block has a fixed position, the resource block used by the serving cell is the resource block numbered 1-50, and if there is a resource block with the same number as the resource block used by the serving cell in the resource blocks used by other adjacent cells, the resource block is the resource block at the same position in the adjacent cell as that in the serving cell.
For example, the first threshold value is 2, the second threshold value is 6db, the third threshold value is 4db, the first set value is 2, the second set value is 1, and the third set value is 0. If the interference overload indication information of a certain resource block is larger than 6db, the interference level of the resource block is high, and the interference level is set to be 2; if the interference overload indication information of a certain resource block is greater than or equal to 4db and less than or equal to 6db, the interference level in the interference level of the resource block is set to be 1; and if the interference overload indication information of a certain resource block is less than 4db, the interference level of the resource block is low, and the interference level is set to be 0. When the sum of the interference levels of resource blocks at the same position in the adjacent cell and the serving cell is equal to a first threshold value 2, the method comprises the following steps: the interference level of the resource block at the same position in one adjacent cell as the serving cell is 2, or the interference level of the resource block at the same position in two adjacent cells as the serving cell is 1.
And 204, subtracting the preset second power step size from the current uplink transmission power of the user equipment to generate a second uplink transmission power of the user equipment, and continuing to execute the step 202.
In this embodiment, when it is determined that the sum of the interference levels of resource blocks at the same positions in the neighboring cell and the serving cell is greater than or equal to the first threshold, it indicates that the current uplink transmit power of the user equipment in the serving cell causes interference to the neighboring cell, and the uplink transmit power of the user equipment needs to be reduced, a second uplink transmit power of the user equipment is obtained by subtracting a preset second power step size from the current uplink transmit power of the user equipment, where the second uplink transmit power is the uplink transmit power of the user equipment after each reduction.
Step 205, adding the current uplink transmission power of the user equipment and a preset first power step to generate a first uplink transmission power of the user equipment.
In this embodiment, when it is determined that the sum of the interference levels of the resource blocks at the same positions in the neighboring cell and the serving cell is smaller than the first threshold, it indicates that the current uplink transmit power of the user equipment in the serving cell does not cause interference to the neighboring cell, at this time, the uplink transmit power of the user equipment may be increased, and the first uplink transmit power of the user equipment is obtained by adding the current uplink transmit power of the user equipment to the preset first power step length.
In this embodiment, preferably, the first power step is equal to the second power step, for example: the first power step and the second power step are both 2 db. The size setting of the first power step and the second power step is not limited in the embodiment of the invention, and the setting can be performed by a person skilled in the art according to actual needs.
Step 206, determining whether the first uplink transmission power is greater than or equal to the maximum uplink transmission power of the user equipment, if so, executing step 207; if not, go to step 202.
Step 207, sending the first uplink transmission power to the user equipment, so that the user equipment transmits data at the first uplink transmission power, and ending the process.
In this embodiment, the uplink transmission power of the ue is increased by the first power step until the uplink transmission power of the ue reaches the maximum uplink transmission power supporting the ue.
For example, there are many high interference cells in a certain urban area, especially in the vicinity of colleges and universities, the overall interference power is relatively high, and the number of high interference cells (the interference power is greater than-110 dbm) is 96. After the uplink power control method provided by the embodiment of the invention is adopted for optimization and adjustment, the number of interference cells is reduced to 15, the proportion of users with high packet loss is reduced from 1.5% to 1.16%, the indexes are greatly improved, other indexes are kept stable, and the user perception is obviously improved. The details are shown in table 1 below:
TABLE 1
| Average interference power | High interference cell number | High packet loss user ratio | |
| Before optimization | -111.3dbm | 96 | 1.50％ |
| After optimization | -115.5 |
15 | 1.16％ |
The traditional uplink power control method aims at adjusting the power of mobile phones in a cell and ensuring the perception of edge users. Due to the LTE common-frequency networking, when certain overlapping coverage areas exist among cells, the influence of edge users on peripheral LTE common-frequency cells is large, and the interference power is increased.
In addition, as the TD-LTE system has no self-interference, and the uplink and downlink links of the TD-LTE system are positioned in the same frequency band, occupy different time slots of the same frequency band, have higher reciprocity of uplink and downlink channels, and the link loss estimation of the terminal can reach quite high control precision, the open-loop power control can be adopted for the uplink power control in the service cell of the TD-LTE system to reduce the transmitting power of users at the edge of the cell, the overall performance of the cell is improved, and too large loss cannot be caused.
The uplink power control method provided by the embodiment of the invention is an inter-cell closed-loop power control method, and in order to ensure the actual perception of a user, the combination of intra-cell open-loop power control and inter-cell closed-loop power control is adopted, so that the wireless environment of the user is better met, the influence on the adjacent cell is fully considered while the interference of the current base station is improved, the influence on the peripheral base station is greatly reduced, and the improvement effect on the urban area with higher base station density is particularly obvious. Through a large amount of successful experience summarization, convenience is brought to optimization work, and the method can be popularized and used in the whole network.
In the technical scheme of the uplink power control method provided by the embodiment of the invention, whether the sum of the interference levels of the resource blocks at the same positions in the adjacent cell and the serving cell is greater than or equal to a first threshold value or not is judged by obtaining the interference level of each resource block in the adjacent cell, and the current uplink transmitting power of the user equipment is adjusted according to the judgment result, so that accurate uplink power control of single user equipment is realized, the mutual interference between cells and the dead cycle of repeated power control of a power control algorithm can be prevented, the balance between cells is ensured, and the perception of a user is improved.
Fig. 3 is a schematic structural diagram of an uplink power control apparatus according to an embodiment of the present invention, and as shown in fig. 3, the apparatus includes: the device comprises a first acquisition module 11, a first judgment module 12, a first calculation module 13, a second judgment module 14 and a sending module 15.
A first obtaining module 11, configured to obtain an interference level of each resource block in an adjacent cell.
A first determining module 12, configured to determine whether a sum of interference levels of the resource blocks at the same position in the adjacent cell and the serving cell is greater than or equal to a first threshold.
A first calculating module 13, configured to add a current uplink transmission power of a user equipment and a preset first power step length to generate a first uplink transmission power of the user equipment if the first determining module 12 determines that the sum of the interference levels of the resource blocks at the same position in the adjacent cell and the serving cell is smaller than the first threshold.
A second determining module 14, configured to determine whether the first uplink transmission power is greater than or equal to a maximum uplink transmission power of the ue.
A sending module 15, configured to send the first uplink transmission power to the user equipment if the second determining module 14 determines that the first uplink transmission power is greater than or equal to the maximum uplink transmission power, so that the user equipment transmits data at the first uplink transmission power.
In the embodiment of the present invention, the apparatus further includes: a second calculation module 16.
A second calculating module 16, configured to, if the first determining module 12 determines that the sum of the interference levels of the resource blocks at the same positions in the adjacent cell and the serving cell is greater than or equal to the first threshold, subtract a preset second power step from a current uplink transmission power of the user equipment to generate a second uplink transmission power of the user equipment, and trigger the first obtaining module 11 to continue to perform the obtaining of the interference level of each resource block in the adjacent cell.
In this embodiment of the present invention, if the second determining module 14 determines that the first uplink transmission power is smaller than the maximum uplink transmission power, the first obtaining module 11 is triggered to continue to perform the obtaining of the interference level of each resource block in the adjacent cell.
In the embodiment of the present invention, the apparatus further includes: a second acquisition module 17.
A second obtaining module 17, configured to obtain an initial uplink transmission power of the ue, where the initial uplink transmission power is a current transmission power.
In this embodiment of the present invention, the first obtaining module 11 specifically includes: an acquisition submodule 111, a calculation submodule 112, a judgment submodule 113, and a setting submodule 114.
The obtaining sub-module 111 is configured to obtain an interference power of each resource block in an adjacent cell and an average thermal noise of all the resource blocks in a spectrum bandwidth.
And the calculating submodule 112 is configured to calculate the interference overload indication information of each resource block by dividing the interference power of each resource block by the average thermal noise of all the resource blocks in the frequency spectrum bandwidth.
The determining submodule 113 is configured to determine whether the interference overload indication information of the resource block is smaller than a second threshold and larger than a third threshold.
A setting module 114, configured to set the interference level of the resource block to a first setting value if the determining sub-module 113 determines that the interference overload indication information of the resource block is greater than a second threshold.
The setting module 114 is further configured to set the interference level of the resource block to a second setting value if the determining sub-module 113 determines that the interference overload indication information of the resource block is greater than or equal to a third threshold and less than or equal to the second threshold.
The setting sub-module 114 is further configured to set the interference level of the resource block to a third setting value if the determining sub-module 113 determines that the interference overload indication information of the resource block is smaller than the third threshold.
The uplink power control device provided in this embodiment may be used to implement the uplink power control method in fig. 1 and fig. 2, and for specific description, reference may be made to the embodiment of the uplink power control method, and a description is not repeated here.
In the technical scheme of the uplink power control device provided by the embodiment of the invention, whether the sum of the interference levels of the resource blocks at the same positions in the adjacent cell and the serving cell is greater than or equal to a first threshold value or not is judged by acquiring the interference level of each resource block in the adjacent cell, and the current uplink transmitting power of the user equipment is adjusted according to the judgment result, so that accurate uplink power control of single user equipment is realized, the mutual interference between cells and the dead cycle of repeated power control of a power control algorithm can be prevented, the balance between cells is ensured, and the perception of a user is improved.
An embodiment of the present invention provides a storage medium, where the storage medium includes a stored program, where, when the program runs, a device on which the storage medium is located is controlled to execute each step of the above embodiment of the uplink power control method, and for specific description, reference may be made to the above embodiment of the uplink power control method.
An embodiment of the present invention provides a base station, including a memory and a processor, where the memory is configured to store information including program instructions, and the processor is configured to control execution of the program instructions, where the program instructions are loaded by the processor and execute steps of the uplink power control method, and specific descriptions refer to the above embodiment of the uplink power control method.
Fig. 4 is a schematic diagram of a base station according to an embodiment of the present invention. As shown in fig. 4, the base station 20 of this embodiment includes: the processor 21, the memory 22, and the computer program 23 stored in the memory 22 and capable of running on the processor 21, where the computer program 23 is executed by the processor 21 to implement the method applied to the uplink power control in the embodiment, and in order to avoid repetition, details are not repeated herein. Alternatively, the computer program is executed by the processor 21 to implement the functions of the models/units applied to the uplink power control device in the embodiments, which are not repeated herein to avoid repetition.
The base station 20 includes, but is not limited to, a processor 21, a memory 22. Those skilled in the art will appreciate that 5 is merely an example of a base station 20 and does not constitute a limitation of the base station 20 and may include more or less components than shown, or combine certain components, or different components, e.g., the base station may also include input output devices, network access devices, buses, etc.
The Processor 21 may be a Central Processing Unit (CPU), other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 22 may be an internal storage unit of the base station 20, such as a hard disk or a memory of the base station 20. The memory 22 may also be an external storage device of the base station 20, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the base station 20. Further, the memory 22 may also include both internal and external memory units of the base station 20. The memory 22 is used to store computer programs and other programs and data required by the network device. The memory 22 may also be used to temporarily store data that has been output or is to be output.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a Processor (Processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An uplink power control method, comprising:
obtaining the interference level of each resource block in the adjacent cell;
judging whether the sum of the interference levels of the resource blocks at the same position in the adjacent cell and the serving cell is greater than or equal to a first threshold value;
if the sum of the interference levels of the resource blocks at the same positions in the adjacent cell and the serving cell is judged to be smaller than the first threshold, adding the current uplink transmitting power of the user equipment and a preset first power step length to generate a first uplink transmitting power of the user equipment;
judging whether the first uplink transmitting power is larger than or equal to the maximum uplink transmitting power of the user equipment or not;
and if the first uplink transmitting power is judged to be greater than or equal to the maximum uplink transmitting power, the first uplink transmitting power is sent to the user equipment, so that the user equipment transmits data at the first uplink transmitting power.
2. The uplink power control method according to claim 1, further comprising:
and if the sum of the interference levels of the resource blocks at the same position in the adjacent cell and the serving cell is judged to be greater than or equal to the first threshold, subtracting a preset second power step length from the current uplink transmission power of the user equipment to generate a second uplink transmission power of the user equipment, and continuously executing the step of acquiring the interference level of each resource block in the adjacent cell.
3. The uplink power control method of claim 2, wherein the first power step is equal to the second power step.
4. The uplink power control method according to claim 1, further comprising:
and if the first uplink transmitting power is judged to be smaller than the maximum uplink transmitting power, continuing to execute the step of obtaining the interference level of each resource block in the adjacent cell.
5. The uplink power control method according to claim 1, wherein before the obtaining the interference level of each resource block in the neighboring cell, the method further comprises:
and acquiring initial uplink transmitting power of the user equipment, wherein the initial uplink transmitting power is the current transmitting power.
6. The uplink power control method according to claim 1, wherein the obtaining the interference level of each resource block in the neighboring cell comprises:
obtaining the interference power of each resource block in an adjacent cell and the average thermal noise of all the resource blocks in a frequency spectrum bandwidth;
dividing the interference power of each resource block by the average thermal noise of all the resource blocks in a frequency spectrum bandwidth to calculate the interference overload indication information of each resource block;
judging whether the interference overload indication information of the resource block is smaller than a second threshold and larger than a third threshold;
if the interference overload indication information of the resource block is judged to be larger than a second threshold value, the interference level of the resource block is set to be a first set value;
if the interference overload indication information of the resource block is judged to be larger than or equal to a third threshold value and smaller than or equal to the second threshold value, the interference level of the resource block is set to be a second set value;
and if the interference overload indication information of the resource block is judged to be smaller than the third threshold value, setting the interference level of the resource block as a third set value.
7. The uplink power control method according to claim 6, wherein the first set value is greater than the second set value, and the second set value is greater than the third set value.
8. An uplink power control apparatus, comprising:
a first obtaining module, configured to obtain an interference level of each resource block in an adjacent cell;
a first judging module, configured to judge whether a sum of interference levels of the resource blocks at the same position in the neighboring cell and the serving cell is greater than or equal to a first threshold;
a first calculating module, configured to add a current uplink transmission power of a user equipment and a preset first power step length to generate a first uplink transmission power of the user equipment if the first determining module determines that a sum of interference levels of the resource blocks at the same positions in the adjacent cell and the serving cell is smaller than the first threshold;
a second judging module, configured to judge whether the first uplink transmission power is greater than or equal to a maximum uplink transmission power of the ue;
a sending module, configured to send the first uplink transmission power to the user equipment if the second determining module determines that the first uplink transmission power is greater than or equal to the maximum uplink transmission power, so that the user equipment transmits data at the first uplink transmission power.
9. A storage medium, comprising a stored program, wherein when the program runs, a device in which the storage medium is located is controlled to execute the uplink power control method according to any one of claims 1 to 7.
10. A base station comprising a memory for storing information including program instructions and a processor for controlling the execution of the program instructions, wherein the program instructions are loaded and executed by the processor to implement the steps of the uplink power control method according to any one of claims 1 to 7.
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