CN114364004A - Uplink power control method and device and electronic equipment - Google Patents
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Abstract
The application provides an uplink power control method, an uplink power control device and electronic equipment, and relates to the technical field of communication. The uplink power control method comprises the following steps: the physical layer of the network device sends the first indication information to the protocol stack in response to the received signal. And the protocol stack determines the receiving power and the signal-to-noise ratio of the signal according to the first indication information. If the signal-to-noise ratio is smaller than the target threshold interval, the protocol stack controls the terminal device to increase the transmitting power of the signal after determining that the receiving power does not reach the power saturation threshold, so that the signal-to-noise ratio is increased to the target threshold interval. Therefore, the overflow of the uplink power can be avoided to the maximum extent in the process of executing the uplink power control.
Description
[ technical field ] A method for producing a semiconductor device
The present application relates to the field of communications technologies, and in particular, to an uplink power control method, an uplink power control device, and an electronic device.
[ background of the invention ]
In a wireless communication system, uplink power control means that path loss and fading in a wireless channel are compensated by controlling signal transmission power of a terminal device, so that interference to other terminal devices is reduced as much as possible on the basis of ensuring uplink communication quality, and meanwhile, the service life of a terminal device battery is prolonged.
Currently, the base station mainly controls the terminal device to increase or decrease the transmission power of the signal by evaluating the signal-to-noise ratio of the received signal. However, this method has a risk of overflow of uplink power, and once overflow occurs, the transmission power of the boosted signal may cause further deterioration of the signal-to-noise ratio of the received signal.
[ summary of the invention ]
The embodiment of the application provides an uplink power control method, an uplink power control device and electronic equipment, which can avoid uplink power overflow in the process of executing uplink power control.
In a first aspect, an embodiment of the present application provides an uplink power control method, which is applied to a network device, where the network device includes a physical layer and a protocol stack, and the method includes: the physical layer responds to the received signal and sends first indication information to the protocol stack; the protocol stack determines the receiving power and the signal-to-noise ratio of the signal according to the first indication information; if the signal-to-noise ratio is smaller than a target threshold interval, the protocol stack controls the terminal device to increase the transmitting power of the signal after determining that the receiving power does not reach a power saturation threshold, so that the signal-to-noise ratio is increased to the target threshold interval.
In one possible implementation manner, the sending, by the physical layer, first indication information to the protocol stack in response to the received signal includes: the physical layer responding to the received signal and calculating the receiving power and the signal-to-noise ratio of the signal; and the physical layer sends first indication information to the protocol stack according to the receiving power and the signal-to-noise ratio of the signal.
In one possible implementation manner, if the protocol stack determines that the received power reaches the power saturation threshold, the method further includes: and the protocol stack controls the terminal equipment to reduce the transmitting power of the signal.
In one possible implementation manner, the signal-to-noise ratio of the signal after the transmission power is reduced is greater than or equal to a set minimum threshold.
In one possible implementation manner, if the signal-to-noise ratio is greater than the target threshold interval, the method further includes: and the protocol stack controls the terminal equipment to reduce the transmitting power of the signal until the signal-to-noise ratio is reduced to the target threshold interval.
In a second aspect, an embodiment of the present application provides an uplink power control apparatus, including: the receiving module is used for responding to the received signal and sending first indication information to the determining module; the determining module is used for determining the receiving power and the signal-to-noise ratio of the signal according to the first indication information; if the signal-to-noise ratio is smaller than the target threshold interval, the determining module is further configured to control the terminal device to increase the transmission power of the signal after determining that the reception power does not reach the power saturation threshold, so that the signal-to-noise ratio is increased to the target threshold interval.
In a third aspect, an embodiment of the present application provides an electronic device, including: at least one processor; and at least one memory communicatively coupled to the processor, wherein: the memory stores program instructions executable by the processor, the processor being capable of performing the method of the first aspect when invoked by the processor.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium storing computer instructions for causing a computer to perform the method according to the first aspect.
In the above technical solution, the network device may control the terminal device to increase the transmission power of the signal only after determining that the received power does not reach the power saturation threshold, so as to increase the signal-to-noise ratio. Therefore, the overflow of the uplink power can be avoided in the process of executing the uplink power control.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present application, 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 application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of a scenario of a communication system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a network device according to an embodiment of the present application;
fig. 3 is a flowchart of an uplink power control method according to an embodiment of the present application;
fig. 4 is a flowchart of another uplink power control method according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an uplink power control apparatus according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
It should be understood that the embodiments described are only a few embodiments of the present application, 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 application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application 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.
Fig. 1 is a schematic view of a scenario of a communication system according to an embodiment of the present application. The communication system provided by the embodiment of the application can be a wireless communication system. It should be noted that, the wireless communication systems mentioned in the embodiments of the present application include, but are not limited to: narrowband Band-internet of Things (NB-IoT), Global System for Mobile Communications (GSM), Enhanced Data Rate GSM Evolution (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (Code Division Multiple Access, CDMA2000), time Division-synchronous Code Division Multiple Access (tds, CDMA), Long Term Evolution (LTE), fifth generation Mobile communication systems, in-vehicle wireless short-range communication systems, and future Mobile communication systems.
As shown in fig. 1, a communication system 100 provided in the embodiment of the present application may include at least one network device 101 and at least one terminal device 102.
The network device 101 is a device deployed in a radio access network and providing a wireless communication function for a terminal device. The network device 101 may include, but is not limited to, a Base Station (BS), a Station (STA, including an Access Point (AP) and a non-AP STA), a network controller, a Transmission and Reception Point (TRP), a mobile switching center or a wireless Access Point in wifi, and the like, and for example, a device directly communicating with the terminal device through a wireless channel is typically a Base Station. The base station may include various forms of macro base stations, micro base stations, relay stations, access points, or Radio Remote Units (RRUs), etc. Of course, the network device 101 may perform wireless communication with the terminal device 102, and may also perform other wireless communication functions, which is not limited in this application.
The Terminal device 102 may include, for example, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., and is a device that provides voice and/or data connectivity communication to a User, such as a handheld device with wireless connectivity capability, a vehicle-mounted device, a wearable device, a computing device, or other processing device linked to a wireless modem. Currently, some examples of terminals are: a Mobile Phone (Mobile Phone), a tablet computer, a notebook computer, a palmtop computer, a Mobile Internet Device (MID), a wearable Device, a Virtual Reality (VR) Device, an Augmented Reality (AR) Device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned Driving (Self Driving), a wireless terminal in Remote Surgery (Remote Medical Surgery), a wireless terminal in Smart Grid, a wireless terminal in Transportation Safety, a wireless terminal in City (Smart City), a wireless terminal in Smart Home (Smart Home), and the like.
The uplink power control method provided by the embodiment of the present application may be executed in the network device 101.
Fig. 2 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in fig. 2, the network device 101 provided in the embodiment of the present application may include a physical layer 201 located at a bottom layer, and a protocol stack 202 located at an upper layer. The protocol stack 202 may further include a data link layer 2021 and a network layer 2022, among others.
The uplink power control method provided by the embodiment of the application can avoid the overflow of the uplink power in the uplink power control process.
Fig. 3 is a flowchart of an uplink power control method according to an embodiment of the present application, and as shown in fig. 3, the uplink power control method may include:
in step 101, the physical layer sends first indication information to the protocol stack in response to the received signal.
In this embodiment, the network device may receive a signal sent by the terminal device through the physical layer. After receiving the signal sent by the terminal device, the physical layer can calculate the received power and the signal-to-noise ratio of the signal. The received power may be calculated in a time domain or a frequency domain, which is not limited in this application.
Then, the physical layer may generate first indication information according to the calculated received power and the signal-to-noise ratio, and send the first indication information to the protocol stack.
And step 102, the protocol stack determines the received power and the signal-to-noise ratio of the signal according to the first indication information.
In this embodiment of the present application, the power saturation threshold may be stored in the protocol stack in advance. The value of the power saturation threshold may be equal to the critical value of the power overflow. Thus, when the received power reaches the power saturation threshold, it is considered that power overflow has occurred. Alternatively, the value of the power saturation threshold may be slightly less than the power overflow threshold. Thus, when the received power reaches the power saturation threshold, it is considered that there is a risk of power overflow and it is desirable to avoid continuing to raise the received power.
Wherein, the critical value of the power overflow can be determined according to the A/D bit width. In an exemplary implementation, assuming that the a/D bit width is 15 bits, the power overflow threshold can be calculated by the following formula:
wherein idataFor the same phase component of the analog signal, qdataIs a 90 degree phase shift component.
Based on the above description, after determining that the signal-to-noise ratio of the signal is smaller than the target threshold interval, the protocol stack will compare the received power of the signal with the power saturation threshold. If the protocol stack determines that the received power does not reach the power saturation threshold, it indicates that no power overflow occurs at this time. Then, the protocol stack can control the terminal device to increase the transmission power of the signal, so that the signal-to-noise ratio is increased to the target threshold interval. The specific implementation manner for controlling the terminal device to increase the transmission power of the signal may refer to the prior art, and is not described in detail in this application.
And the value of the target threshold interval is related to the distance between the network equipment and the terminal equipment. The closer the terminal device is to the network device, the larger the value of the corresponding target threshold interval is, so as to improve the spectrum efficiency. The farther the terminal device is from the network device, the smaller the value of the corresponding target threshold interval is.
In the above technical solution, after receiving the signal sent by the terminal device, the network device may first determine the received power of the signal when the signal-to-noise ratio does not reach the target signal-to-noise ratio. And only when the received power is determined not to reach the set power saturation threshold, the network equipment controls the terminal equipment to increase the transmitting power so as to enhance the signal-to-noise ratio of the signal. By the scheme, the overflow of the uplink power can be avoided in the uplink power control process.
Fig. 4 is a flowchart of another uplink power control method according to an embodiment of the present application. As shown in fig. 4, the uplink power control method provided in the embodiment of the present application may include:
in step 201, the physical layer sends first indication information to the protocol stack in response to the received signal.
In the embodiment of the present application, after determining the received power and the signal-to-noise ratio of the signal, the protocol stack may first determine whether the signal-to-noise ratio of the signal is smaller than a target threshold interval. If the value is smaller than the target threshold interval, it indicates that the transmission power of the signal is insufficient, at this time, step 204 may be executed to determine whether to increase the transmission power of the signal according to the magnitude of the received power. If the signal transmission power is larger than the target threshold interval, it indicates that the signal transmission power is too high, at this time, step 206 may be executed to directly control the terminal device to reduce the signal transmission power until the snr decreases to the target threshold interval.
At step 204, the protocol stack determines whether the received power is less than a power saturation threshold. If so, go to step 205; otherwise, step 206 is performed.
In the case where the received power is less than the power saturation threshold, it may be determined that power overflow is not currently occurring. Furthermore, in order to improve the signal-to-noise ratio of the signal, the network device may control the terminal device to increase the transmission power of the signal.
Under the condition that the received power is greater than the power saturation threshold, it can be determined that power overflow exists, and at this time, if the terminal device is continuously controlled to increase the signal transmission power, the power overflow is more serious, and further the signal-to-noise ratio is further deteriorated. Therefore, in the embodiment of the present application, although the signal-to-noise ratio at this time is lower than the target threshold interval, the protocol stack still needs to control the terminal device to reduce the transmission power of the signal, so that the received power is reduced below the power saturation threshold, and the power overflow is eliminated.
Further, in the process of reducing the transmission power, in order to prevent the terminal device from dropping due to the excessive reduction of the signal-to-noise ratio, the embodiment of the application may further set a minimum threshold of the signal-to-noise ratio. When the signal-to-noise ratio reaches the lowest threshold, the protocol stack will stop controlling the terminal device to continue to reduce the transmission power of the signal no matter whether the receiving power at that time is reduced below the power saturation threshold.
In the above technical solution, the network device may directly control the terminal device to reduce the transmission power of the signal when the signal-to-noise ratio is higher than the target threshold interval. Under the condition that the signal-to-noise ratio is lower than the target threshold interval, the network equipment can control the terminal equipment to increase or decrease the transmitting power of the signal according to the size of the receiving power. Therefore, the overflow of the uplink power can be avoided in the uplink power control process.
Fig. 5 is a schematic structural diagram of an uplink power control apparatus according to an embodiment of the present application. As shown in fig. 5, the uplink power control apparatus may include: a receiving module 51 and a determining module 5.
The receiving module 51 is configured to send the first indication information to the determining module 52 in response to the received signal.
And a determining module 52, configured to determine the received power and the signal-to-noise ratio of the signal according to the first indication information.
If the signal-to-noise ratio is smaller than the target threshold interval, the determining module 52 is further configured to control the terminal device to increase the transmission power of the signal after determining that the received power does not reach the power saturation threshold, so that the signal-to-noise ratio is increased to the target threshold interval.
In a specific implementation, the receiving module 51 is specifically configured to, in response to a received signal, calculate a received power and a signal-to-noise ratio of the signal; the first indication information is sent to the determination module 52 according to the received power and the signal-to-noise ratio of the signal.
In a specific implementation, if the determination module 52 determines that the received power reaches the power saturation threshold, the determination module 52 is further configured to: and controlling the terminal equipment to reduce the transmission power of the signal.
In a specific implementation manner, the signal-to-noise ratio of the signal after the transmission power is reduced is greater than or equal to a set minimum threshold.
In a specific implementation, if the signal-to-noise ratio is greater than the target threshold interval, the determining module 52 is further configured to: and controlling the terminal equipment to reduce the transmitting power of the signal until the signal-to-noise ratio is reduced to a target threshold interval.
In the above technical solution, first, the receiving module 51 sends the first indication information to the determining module 52 in response to the received signal. Then, the determining module 52 determines the received power and the signal-to-noise ratio of the signal according to the first indication information. If the signal-to-noise ratio is smaller than the target threshold interval, the determining module 52 controls the terminal device to increase the transmission power of the signal after determining that the received power does not reach the power saturation threshold, so that the signal-to-noise ratio is increased to the target threshold interval. Thus, it is possible to prevent an uplink power overflow during the execution of the uplink power control.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 6, the electronic device may include at least one processor; and at least one memory communicatively coupled to the processor, wherein: the memory stores program instructions executable by the processor, and the processor calls the program instructions to execute the uplink power control method provided by the embodiment of the application.
The electronic device may be an uplink power control device, and the embodiment does not limit the specific form of the electronic device.
FIG. 6 illustrates a block diagram of an exemplary electronic device suitable for use in implementing embodiments of the present application. The electronic device shown in fig. 6 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present application.
As shown in fig. 6, the electronic device is in the form of a general purpose computing device. Components of the electronic device may include, but are not limited to: one or more processors 410, a memory 430, and a communication bus 440 that connects the various system components (including the memory 430 and the processors 410).
Electronic devices typically include a variety of computer system readable media. Such media may be any available media that is accessible by the electronic device and includes both volatile and nonvolatile media, removable and non-removable media.
A program/utility having a set (at least one) of program modules, including but not limited to an operating system, one or more application programs, other program modules, and program data, may be stored in memory 430, each of which examples or some combination may include an implementation of a network environment. The program modules generally perform the functions and/or methodologies of the embodiments described herein.
The electronic device may also communicate with one or more external devices (e.g., keyboard, pointing device, display, etc.), one or more devices that enable a user to interact with the electronic device, and/or any devices (e.g., network card, modem, etc.) that enable the electronic device to communicate with one or more other computing devices. Such communication may occur via communication interface 420. Furthermore, the electronic device may also communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public Network such as the Internet) via a Network adapter (not shown in FIG. 6) that may communicate with other modules of the electronic device via the communication bus 440. It should be appreciated that although not shown in FIG. 6, other hardware and/or software modules may be used in conjunction with the electronic device, including but not limited to: microcode, device drivers, Redundant processing units, external disk drive Arrays, disk array (RAID) systems, tape Drives, and data backup storage systems, among others.
The processor 410 executes programs stored in the memory 430 to perform various functional applications and data processing, for example, implement the uplink power control method provided by the embodiment of the present application.
An embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores a computer instruction, and the computer instruction causes the computer to execute the uplink power control method provided in the embodiment of the present application.
The computer-readable storage medium described above may take any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read Only Memory (ROM), an Erasable Programmable Read Only Memory (EPROM), a flash Memory, an optical fiber, a portable compact disc Read Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
In the several embodiments provided in the present application, it should be understood that the disclosed system, 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.
In addition, functional units in the embodiments of the present application 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 above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (8)
1. An uplink power control method is applied to a network device, wherein the network device includes a physical layer and a protocol stack, and the method includes:
the physical layer responds to the received signal and sends first indication information to the protocol stack;
the protocol stack determines the receiving power and the signal-to-noise ratio of the signal according to the first indication information;
if the signal-to-noise ratio is smaller than a target threshold interval, the protocol stack controls the terminal device to increase the transmitting power of the signal after determining that the receiving power does not reach a power saturation threshold, so that the signal-to-noise ratio is increased to the target threshold interval.
2. The method of claim 1, wherein the physical layer sends first indication information to the protocol stack in response to the received signal, comprising:
the physical layer responding to the received signal and calculating the receiving power and the signal-to-noise ratio of the signal;
and the physical layer sends first indication information to the protocol stack according to the receiving power and the signal-to-noise ratio of the signal.
3. The method of claim 1, wherein if the protocol stack determines that the received power reaches the power saturation threshold, the method further comprises:
and the protocol stack controls the terminal equipment to reduce the transmitting power of the signal.
4. The method of claim 3, wherein:
and the signal-to-noise ratio of the signal after the transmission power is reduced is greater than or equal to a set lowest threshold value.
5. The method of claim 1, wherein if the signal-to-noise ratio is greater than the target threshold interval, the method further comprises:
and the protocol stack controls the terminal equipment to reduce the transmitting power of the signal until the signal-to-noise ratio is reduced to the target threshold interval.
6. An uplink power control apparatus, comprising:
the receiving module is used for responding to the received signal and sending first indication information to the determining module;
the determining module is used for determining the receiving power and the signal-to-noise ratio of the signal according to the first indication information;
if the signal-to-noise ratio is smaller than the target threshold interval, the determining module is further configured to control the terminal device to increase the transmission power of the signal after determining that the reception power does not reach the power saturation threshold, so that the signal-to-noise ratio is increased to the target threshold interval.
7. An electronic device, comprising:
at least one processor; and
at least one memory communicatively coupled to the processor, wherein:
the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1 to 5.
8. A computer-readable storage medium storing computer instructions for causing a computer to perform the method of any one of claims 1 to 5.
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