CN113225795B - Method for controlling transmission power and communication system using the same - Google Patents
Method for controlling transmission power and communication system using the same Download PDFInfo
- Publication number
- CN113225795B CN113225795B CN202110406152.1A CN202110406152A CN113225795B CN 113225795 B CN113225795 B CN 113225795B CN 202110406152 A CN202110406152 A CN 202110406152A CN 113225795 B CN113225795 B CN 113225795B
- Authority
- CN
- China
- Prior art keywords
- signal
- power
- noise ratio
- mobile station
- base station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
-
- 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
- H04W52/20—TPC being performed according to specific parameters using error rate
-
- 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
- H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to the technical field of communication, discloses a transmitting power control method and a communication system adopting the method, comprising power balance control, signal-to-noise ratio balance control and error rate balance control, and also discloses a communication system of the transmitting power control method, comprising a mobile station transmitter, a mobile station receiver, a base station transmitter, a filter, a signal processor and a power amplifier. The invention controls the power, the signal to noise ratio and the bit error rate of the generated power respectively through the power balance control, the signal to noise ratio balance control and the bit error rate balance control, thereby realizing the calibration of the transmitting power of the mobile communication terminal and the accurate control of the transmitting power, leading the signal to noise ratio of the user terminal to reach the target signal to noise ratio, leading the signal to noise ratio to be increased more rapidly, leading the transmitting power to be converged to the balance value, avoiding the problem of weak signal receiving caused by the convergence of the transmitting power of the user to be too small, solving the problem of the same-frequency interference and avoiding the energy waste.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a transmitting power control method and a communication system adopting the same.
Background
The wireless communication technology can allow the electronic equipment to be connected to the local area network so as to realize high transmission speed, can quickly establish a communication link in a short time, and can effectively meet the temporary or emergent disaster-resistant communication requirement, so that the wireless communication technology is widely applied to various fields such as industry, automobile industry, medical treatment and the like.
In a wireless communication system, mobile communication is a dynamic process of channel decay, which is expressed as fast fading, slow fading, near-far effect, noise and interference, the existing power control method has lower precision, the problem of co-channel interference exists, and meanwhile, the energy waste is serious.
Disclosure of Invention
The present invention is directed to a method for controlling transmission power and a communication system using the same, which solve the problems set forth in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the transmitting power control method comprises power balance control, signal-to-noise ratio balance control and error rate balance control, and comprises the following steps:
s1, power balance control: the user terminal analyzes the data packet on the slow associated channel, obtains the power level appointed by the base station, and converts the power level into the power control quantity N stored in the internal memory chip apc The value of the power is controlled by the power control quantity N apc The value and the filter parameters are calculated to obtain the output power of the control quantity of the power amplifier, and the power amplifier for the output power is amplified to a set value in a time domain through the power amplifier, so that the power is kept balanced;
s2, signal-to-noise ratio balance control: the mobile station receiver estimates the frequency offset of the input signal and eliminates the frequency offset, the base station receiver obtains the bandwidth and the symbol rate of the signal and selects a proper sampling multiple according to the bandwidth and the symbol rate, thereby improving the signal-to-noise ratio according to the digital signal processing and the modulation-demodulation algorithm and keeping the signal-to-noise ratio balanced; the formula adopted by the digital signal processing and modulation-demodulation algorithm in the signal-to-noise ratio balance control is as follows:
P s is the average power of the signal, P n Is the average power of noise, K begin Index value, K, at the beginning of the spectrum final Index value at end of spectrum, N FFT The number of points is Fourier transform;
s3, error rate balance control: the base station transmitter transmits N data packets to the mobile station receiver, the mobile station receiver feeds back confirmation information to the serial number of each data packet, namely, the base station transmitter waits for the feedback information of the N data packet before transmitting the N+i data packets, when the confirmation characters are fed back, the transmitting end continues to transmit the next i data packets, otherwise, the i data packets from the N data packets are retransmitted, so that the error rate is kept balanced.
The communication system of the transmitting power control method comprises a mobile station transmitter, a mobile station receiver, a base station transmitter, a filter, a signal processor and a power amplifier, wherein the mobile station transmitter is used for modulating information input by a terminal to a specified carrier wave according to a certain modulation mode, the information input by the terminal comprises voice and data, the voice and data are amplified by the power amplifier and then transmitted, the base station receiver is used for receiving signals transmitted by the mobile station transmitter, selecting and amplifying required signals in the signals, demodulating the signals according to a certain modulation mode, and then transmitting the demodulated signals to the filter for transmitting power control processing, the base station transmitter is used for receiving the signals after power processing, recovering the signals to original voice signals or data information, and the signal processor is used for transmitting the signals transmitted by the mobile station receiver to the mobile station transmitter after power adjustment.
As still further aspects of the invention: the formula of the transmission power control is as follows:
where n is the number of mobile users, P i For the transmit power of user i, y i For the signal-to-noise ratio of the user i link, y is a threshold value of the signal-to-noise ratio meeting the system requirement, w (n) is a relaxation factor, and the value range is (1<w(n)>2)，p max Is the maximum transmit power.
As still further aspects of the invention: the adjustment of the transmit power comprises the steps of:
s11, initializing a mobile station transmitter, a mobile station receiver, a base station receiver and a base station transmitter, and setting initial values of various parameters;
s22, gain is carried out on a mobile station transmitter, a mobile station receiver, a base station receiver and a link between the base station transmitter, and the signal to noise ratio between the mobile station and the base station receiver and between the base station transmitter and the mobile station receiver is calculated;
s33, comparing the signal-to-noise ratio calculated in the S22 with a target signal-to-noise ratio, if the signal-to-noise ratio and the target signal-to-noise ratio are the same, not adjusting the transmitting power, and if the signal-to-noise ratio and the target signal-to-noise ratio are different, adjusting the transmitting power according to an algorithm of a formula for controlling the transmitting power, and comparing the adjusted signal-to-noise ratio with the target signal-to-noise ratio until the signal-to-noise ratio and the target signal-to-noise ratio are the same.
As still further aspects of the invention: the channel between the mobile station transmitter and the base station receiver employs an uplink communication channel and the channel between the base station transmitter and the mobile station receiver employs a downlink communication channel.
Compared with the prior art, the invention has the beneficial effects that:
the power, the signal to noise ratio and the bit error rate of the generated power are respectively controlled through the power balance control, the signal to noise ratio balance control and the bit error rate balance control, so that the transmitting power calibration of the mobile communication terminal and the accurate control of the transmitting power are realized, the signal to noise ratio of the user terminal reaches the target signal to noise ratio, the signal to noise ratio is increased more rapidly, the transmitting power is converged to a balance value, the problem of weak signal receiving caused by the fact that the transmitting power of the user is converged to be too small is avoided, the problem of same-frequency interference is solved, and the energy waste is avoided.
Drawings
Fig. 1 is a schematic diagram of power balance control in a transmit power control method;
fig. 2 is a schematic diagram of a communication system of a transmission power control method;
fig. 3 is a schematic diagram of transmit power adjustment in a communication system of a transmit power control method.
Detailed Description
Referring to fig. 1 to 3, in an embodiment of the present invention, a method for controlling transmission power and a method for using the same, including power balance control, signal to noise ratio balance control, and error rate balance control, includes the steps of:
s1, power balance control: the user terminal analyzes the data packet on the slow associated channel, obtains the power level appointed by the base station, and converts the power level into the power control quantity N stored in the internal memory chip apc The value of the power is controlled by the power control quantity N apc The value and the filter parameters are calculated to obtain the output power of the control quantity of the power amplifier, and the power amplifier for the output power is amplified to a set value in a time domain through the power amplifier, so that the power is kept balanced;
s2, signal-to-noise ratio balance control: the mobile station receiver estimates the frequency offset of the input signal and eliminates the frequency offset, the base station receiver obtains the bandwidth and the symbol rate of the signal and selects a proper sampling multiple according to the bandwidth and the symbol rate, thereby improving the signal-to-noise ratio according to the digital signal processing and the modulation-demodulation algorithm and keeping the signal-to-noise ratio balanced; the formula adopted by the digital signal processing and modulation-demodulation algorithm in the signal-to-noise ratio balance control is as follows:
P s is the average power of the signal, P n Is the average power of noise, K begin Index value, K, at the beginning of the spectrum final Index value at end of spectrum, N FFT The number of points is Fourier transform;
s3, error rate balance control: the base station transmitter transmits N data packets to the mobile station receiver, the mobile station receiver feeds back confirmation information to the serial number of each data packet, namely, the base station transmitter waits for the feedback information of the N data packet before transmitting the N+i data packets, when the confirmation characters are fed back, the transmitting end continues to transmit the next i data packets, otherwise, the i data packets from the N data packets are retransmitted, so that the error rate is kept balanced.
The communication system of the transmitting power control method comprises a mobile station transmitter, a mobile station receiver, a base station transmitter, a filter, a signal processor and a power amplifier, wherein the mobile station transmitter is used for modulating information input by a terminal onto a specified carrier wave according to a certain modulation mode through baseband processing, the information input by the terminal comprises voice and data, the voice and the data are amplified by the power amplifier and then transmitted, the base station receiver is used for receiving signals transmitted by the mobile station transmitter, selecting and amplifying required signals in the signals, demodulating the signals according to a certain modulation mode, and then transmitting the demodulated signals to the filter for transmitting power control processing, the base station transmitter is used for receiving the signals after power processing and outputting the signals to the mobile station receiver after power adjustment, and the signal processor is used for transmitting the signals transmitted by the mobile station receiver onto the mobile station transmitter after power adjustment.
Preferably, the transmit power control is formulated as follows:
where n is the number of mobile users, P i For usersi transmit power, y i For the signal-to-noise ratio of the user i link, y is a threshold value of the signal-to-noise ratio meeting the system requirement, w (n) is a relaxation factor, and the value range is (1<w(n)>2)，p max Is the maximum transmit power.
Preferably, the adjustment of the transmit power comprises the steps of:
s11, initializing a mobile station transmitter, a mobile station receiver, a base station receiver and a base station transmitter, and setting initial values of various parameters;
s22, gain is carried out on a mobile station transmitter, a mobile station receiver, a base station receiver and a link between the base station transmitter, and the signal to noise ratio between the mobile station and the base station receiver and between the base station transmitter and the mobile station receiver is calculated;
s33, comparing the signal-to-noise ratio calculated in the S22 with a target signal-to-noise ratio, if the signal-to-noise ratio and the target signal-to-noise ratio are the same, not adjusting the transmitting power, and if the signal-to-noise ratio and the target signal-to-noise ratio are different, adjusting the transmitting power according to an algorithm of a formula for controlling the transmitting power, and comparing the adjusted signal-to-noise ratio with the target signal-to-noise ratio until the signal-to-noise ratio and the target signal-to-noise ratio are the same.
Preferably, the channel between the mobile station transmitter and the base station receiver uses an uplink communication channel and the channel between the base station transmitter and the mobile station receiver uses a downlink communication channel.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (5)
1. The transmitting power control method comprises power balance control, signal-to-noise ratio balance control and error rate balance control and is characterized by comprising the following steps:
s1, power balance control: the user terminal analyzes the data packet on the slow associated channel, obtains the power level appointed by the base station, and converts the power levelPower control amount N stored for internal memory chip apc The value of the power is controlled by the power control quantity N apc The value and the filter parameters are calculated to obtain the output power of the control quantity of the power amplifier, and the power amplifier for the output power is amplified to a set value in a time domain through the power amplifier, so that the power is kept balanced;
s2, signal-to-noise ratio balance control: the mobile station receiver estimates the frequency offset of the input signal and eliminates the frequency offset, the base station receiver obtains the bandwidth and the symbol rate of the signal and selects a proper sampling multiple according to the bandwidth and the symbol rate, thereby improving the signal-to-noise ratio according to the digital signal processing and the modulation-demodulation algorithm and keeping the signal-to-noise ratio balanced; the formula adopted by the digital signal processing and modulation-demodulation algorithm in the signal-to-noise ratio balance control is as follows:
P s is the average power of the signal, P n Is the average power of noise, K begin Index value, K, at the beginning of the spectrum final Index value at end of spectrum, N FFT The number of points is Fourier transform;
s3, error rate balance control: the base station transmitter transmits N data packets to the mobile station receiver, the mobile station receiver feeds back confirmation information to the serial number of each data packet, namely, the base station transmitter waits for the feedback information of the N data packet before transmitting the N+i data packets, when the confirmation characters are fed back, the transmitting end continues to transmit the next i data packets, otherwise, the i data packets from the N data packets are retransmitted, so that the error rate is kept balanced.
2. The communication system for implementing the transmission power control method as claimed in claim 1, characterized by comprising a mobile station transmitter for processing information input by a terminal via a baseband, modulating the information on a prescribed carrier according to a certain modulation scheme, wherein the information input by the terminal includes voice and data, amplifying the information via a power amplifier, and transmitting the amplified information, a mobile station receiver for receiving a signal transmitted from the mobile station transmitter, selecting and amplifying a desired signal from the signal, demodulating the signal according to a certain modulation scheme, and transmitting the demodulated signal to the filter for transmission power control processing, a base station transmitter for receiving the power-processed signal, recovering the signal to an original voice signal or data information, and outputting the signal to the mobile station receiver, wherein the signal processor is for transmitting the signal transmitted from the mobile station receiver via the power adjustment to the mobile station transmitter.
3. The communication system of the transmission power control method according to claim 2, wherein the transmission power control formula is as follows:
where n is the number of mobile users, P i For the transmit power of user i, y i For the signal-to-noise ratio of the user i link, y is a threshold value of the signal-to-noise ratio meeting the system requirement, w (n) is a relaxation factor, and the value range is (1<w(n)>2)，p max Is the maximum transmit power.
4. A communication system according to the transmission power control method as claimed in claim 3, characterized in that the adjustment of the transmission power comprises the steps of:
s11, initializing a mobile station transmitter, a mobile station receiver, a base station receiver and a base station transmitter, and setting initial values of various parameters;
s22, gain is carried out on a mobile station transmitter, a mobile station receiver, a base station receiver and a link between the base station transmitter, and the signal to noise ratio between the mobile station and the base station receiver and between the base station transmitter and the mobile station receiver is calculated;
s33, comparing the signal-to-noise ratio calculated in the S22 with a target signal-to-noise ratio, if the signal-to-noise ratio and the target signal-to-noise ratio are the same, not adjusting the transmitting power, and if the signal-to-noise ratio and the target signal-to-noise ratio are different, adjusting the transmitting power according to an algorithm of a formula for controlling the transmitting power, and comparing the adjusted signal-to-noise ratio with the target signal-to-noise ratio until the signal-to-noise ratio and the target signal-to-noise ratio are the same.
5. The communication system of the transmission power control method according to claim 2, wherein the channel between the mobile station transmitter and the base station receiver uses an uplink communication channel, and the channel between the base station transmitter and the mobile station receiver uses a downlink communication channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110406152.1A CN113225795B (en) | 2021-04-15 | 2021-04-15 | Method for controlling transmission power and communication system using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110406152.1A CN113225795B (en) | 2021-04-15 | 2021-04-15 | Method for controlling transmission power and communication system using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113225795A CN113225795A (en) | 2021-08-06 |
| CN113225795B true CN113225795B (en) | 2023-06-02 |
Family
ID=77087454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110406152.1A Active CN113225795B (en) | 2021-04-15 | 2021-04-15 | Method for controlling transmission power and communication system using the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113225795B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332545A (en) * | 2001-08-15 | 2002-01-23 | 信息产业部电信传输研究所 | Effective closed-loop power control method for radio multimedia CDMA communication system |
| CN102165815A (en) * | 2008-08-27 | 2011-08-24 | 高通股份有限公司 | Power control in a wireless communication system |
| CN102415030A (en) * | 2009-04-30 | 2012-04-11 | 瑞典爱立信有限公司 | Integrated power control and link adaptation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7155249B2 (en) * | 2003-01-10 | 2006-12-26 | Qualcomm Incorporated | Modified power control for hybrid ARQ on the reverse link |
-
2021
- 2021-04-15 CN CN202110406152.1A patent/CN113225795B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332545A (en) * | 2001-08-15 | 2002-01-23 | 信息产业部电信传输研究所 | Effective closed-loop power control method for radio multimedia CDMA communication system |
| CN102165815A (en) * | 2008-08-27 | 2011-08-24 | 高通股份有限公司 | Power control in a wireless communication system |
| CN102415030A (en) * | 2009-04-30 | 2012-04-11 | 瑞典爱立信有限公司 | Integrated power control and link adaptation |
Non-Patent Citations (6)
| Title |
|---|
| 3GPP.Feasibility study for evolved GSM/EDGE Radio Access Network (GERAN).3GPP TR 45.912 V1.1.02.0.0.2006,全文. * |
| 乐情韬.基于GSM网络SMS短消息的多媒体教室防盗系统.CNKI优秀硕士学位论文全文库.2012,全文. * |
| 杨斌.广义扩展MIMO-OFDM系统中检测算法研究及优化.CNKI优秀博士学位论文全文库.2007,全文. * |
| 杨斌.无线传感器网络的节点定位技术研究.CNKI优秀硕士学位论文全文库.2015,全文. * |
| 钱开国.无线传感器网络嵌入式操作系统的研究和应用.CNKI优秀硕士学位论文全文库.2011,全文. * |
| 陈嘉灿 ; .关于TD-LTE室内分布系统设计关键点的探讨.信息通信.2013,(第09期),全文. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113225795A (en) | 2021-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7151740B2 (en) | Transmit power control for an OFDM-based wireless communication system | |
| EP1163737B1 (en) | Combined closed loop/open loop power control in a time division duplex communication system | |
| US6879840B2 (en) | Method and apparatus for adaptive QoS-based joint rate and power control algorithm in multi-rate wireless systems | |
| KR100966315B1 (en) | Fast adaptive power control for a variable multirate communications system | |
| US6597723B1 (en) | Weighted open loop power control in a time division duplex communication system | |
| US20050135503A1 (en) | System and method for adjusting a power level of a transmission signal | |
| US7761112B2 (en) | Power control method for uplink in mobile communication and apparatus thereof | |
| US6166622A (en) | Time slot structure for improved TPC estimation in WCDMA | |
| US20020080747A1 (en) | User equipment employing a time division duplex technique | |
| CN107888267A (en) | Ascending power control method and device | |
| EP1424801A3 (en) | Method and apparatus for channel quality metric generation within a packet-based multicarrier modulation communication system | |
| JPH10503337A (en) | Remote transmitter power control in a CDMA communication system | |
| MXPA02004668A (en) | Method for monitoring transmission quality. | |
| US6983165B1 (en) | Radio communication apparatus and transmission power control method | |
| CN108521290B (en) | Power distribution method in wireless relay cooperative network based on spatial modulation | |
| CN109348500A (en) | Meet the resource allocation methods of two-way SWIPT relay system under the conditions of a kind of hardware damage | |
| EP1642400A1 (en) | Radio communication system | |
| JP2001111523A (en) | Cdma receiving agc circuit and cdma demodulator | |
| CN113225795B (en) | Method for controlling transmission power and communication system using the same | |
| CN111818627B (en) | Dynamically adjusted downlink originating calibration method | |
| CN112383954B (en) | Method and device for controlling power of simultaneous same-frequency full duplex system | |
| JP4852724B2 (en) | Signal-to-interference + noise ratio estimator and method, and mobile terminal having this estimator | |
| Akande | A new hybrid diversity combining scheme for mobile radio communication systems over nakagami fading chanel | |
| Jang et al. | An enhanced automatic gain control algorithm for initial cell search in 3GPP LTE TDD system | |
| Lee et al. | Multi-level QAM transceivers with adaptive power control in fixed wireless channels |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |