CN107317609B - Wireless transmission efficiency judging device and wireless transmission efficiency judging method - Google Patents
Wireless transmission efficiency judging device and wireless transmission efficiency judging method Download PDFInfo
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- CN107317609B CN107317609B CN201710564073.7A CN201710564073A CN107317609B CN 107317609 B CN107317609 B CN 107317609B CN 201710564073 A CN201710564073 A CN 201710564073A CN 107317609 B CN107317609 B CN 107317609B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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Abstract
A wireless transmission performance judging device and a wireless transmission performance judging method include: a wireless receiving device having at least two receiving antennas; a control unit provided in the wireless receiving device; a wireless transmission device having at least two transmission antennas; the efficiency judging unit is connected with the wireless receiving device, and the wireless receiving device obtains the error vector magnitude of the wireless signal received from the wireless transmitting device; the control unit is controlled by the efficiency judging unit and changes the radiation characteristics of the at least two receiving antennas according to the error vector magnitude so as to change a channel matrix formed by the at least two receiving antennas and the at least two transmitting antennas; the performance determining unit obtains a physical layer data rate from a physical layer of the wireless receiving device, and determines a wireless transmission throughput of the wireless receiving device according to the physical layer data rate. The communication efficiency of the multiple input multiple output system is improved; improve the predictability of the performance of the product for users and strengthen the research and development criteria of the performance of the product.
Description
Technical Field
The invention belongs to the technical field of wireless transmission, and particularly relates to wireless transmission efficiency judging equipment and a wireless transmission efficiency judging method.
Background
As is known in the art, the data transmission rate or the quality of the transmitted signal between wireless devices is related to the performance of the wireless devices themselves and the environment in which the wireless devices are located. The wireless device manufacturer can control the performance of the wireless device itself (through design and improvement), and the problem of the usage environment belongs to the category of predicting and planning factors adverse to the data transmission speed and the transmission signal quality, such as mutual interference between the same devices, environmental noise interference, channel attenuation and channel multipath effect, when designing the product, for example, the quality of signal reception and transmission can be determined by measuring the Error Vector Magnitude (EVM) of the received signal according to the communication standard (e.g., IEEE 802.11) during the product volume production test. Signal transmission quality is directly related to the wireless transmission throughput that can be achieved by the wireless device. However, in actual product usage, since environmental factors (such as multipath effect) have a large influence on wireless transmission throughput, it is not easy to accurately evaluate the wireless transmission performance in actual usage, and the technical solution described below is generated in this context.
Disclosure of Invention
The present invention is directed to a wireless transmission performance determining apparatus and a wireless transmission performance determining method, which are advantageous for determining a wireless transmission throughput by using a data rate of a physical layer and for improving a communication performance of a mimo system by changing a channel matrix by changing a radiation characteristic of a receiving antenna.
The task of the present invention is accomplished by a wireless transmission performance judging device comprising:
a wireless receiving device, which has at least two receiving antennas;
the control unit is arranged on the wireless receiving device;
a wireless transmitter having at least two transmitting antennas, the at least two transmitting antennas and the at least two receiving antennas forming a mimo system for transmitting a wireless signal to the wireless receiver; and
a performance determining unit, connected to the wireless receiving device and having an application layer software, for obtaining an error vector magnitude of the wireless signal received from the wireless transmitting device by the wireless receiving device;
wherein the control unit is controlled by the performance determining unit and changes the radiation characteristics of the at least two receiving antennas according to the error vector magnitude to change a channel matrix formed by the at least two receiving antennas and the at least two transmitting antennas so as to reduce the error vector magnitude;
the performance determining unit obtains a physical layer data rate from a physical layer of the wireless receiving device, and determines a wireless transmission throughput of the wireless receiving device according to the physical layer data rate.
In one embodiment of the present invention, the wireless signal is a Quadrature Amplitude Modulation (QAM) signal.
In another embodiment of the present invention, when the magnitude of the error vector is greater than a predetermined value, the control unit is controlled by the performance determination unit to change the radiation characteristics of the at least two receiving antennas, so as to increase the signal set size of the wireless signal that the wireless receiving device is capable of demodulating, where the signal set size of the wireless signal is N, and the wireless signal is referred to as N-QAM.
In yet another specific embodiment of the present invention, the wireless signal conforms to the IEEE802.11 n or IEEE802.11ac standards as defined by the International Institute of Electrical and Electronics Engineers (IEEE).
In another embodiment of the present invention, the control unit is independent of and not controlled by a wireless chip of the wireless receiving apparatus, the wireless chip is used for demodulating the wireless signal, and the physical layer data rate of the physical layer is obtained by the wireless chip responsible for demodulating the wireless signal.
Another task of the present invention is achieved by a method for determining performance of wireless transmission, performed by a performance determining unit having an application layer software, the performance determining unit being connected to a wireless receiving device, the method comprising:
a multiple-input multiple-output system is formed by at least two receiving antennas of the wireless receiving device and at least two transmitting antennas of the wireless transmitting device;
obtaining an error vector magnitude according to a wireless signal received by the wireless receiving device from the wireless transmitting device;
a control unit disposed in the wireless receiving apparatus is controlled by the performance determining unit to change radiation characteristics of the at least two receiving antennas according to the error vector magnitude, so as to change a channel matrix formed by the at least two receiving antennas and the at least two transmitting antennas, thereby reducing the error vector magnitude; and
a physical layer data rate is obtained from a physical layer of the wireless receiving device, and the physical layer data rate is used as a wireless transmission throughput of the wireless receiving device.
In yet another embodiment of the present invention, the wireless signal is a Quadrature Amplitude Modulation (QAM) signal.
In a more specific embodiment of the present invention, when the magnitude of the error vector is greater than a predetermined value, the control unit is controlled by the performance determination unit to change the radiation characteristics of the at least two receiving antennas, so as to increase the signal set size of the wireless signal that the wireless receiving device is capable of demodulating, where the signal set size of the wireless signal is N, and the wireless signal is referred to as N-QAM.
In yet another embodiment of the present invention, the wireless signal conforms to the IEEE802.11 n or IEEE802.11ac standards as defined by the International Institute of Electrical and Electronics Engineers (IEEE).
In yet another specific embodiment of the present invention, the control unit is independent and not controlled by a wireless chip of the wireless receiving apparatus, the wireless chip is used for demodulating the wireless signal, and the physical layer data rate of the physical layer is obtained by the wireless chip responsible for demodulating the wireless signal.
The technical scheme provided by the invention has the technical effects that: the physical layer data rate is used to replace the estimation of the wireless transmission throughput in the MIMO system, and the radiation characteristic of the receiving antenna is changed to change the channel matrix, so the communication performance of the MIMO system is significantly improved. Whether in mass production test of products or in actual product use, the wireless device is judged to have reasonable wireless transmission throughput (relative to various unexpected transmission environments), so that the product performance expectability of a user can be improved, and the wireless device can be further used as a research and development criterion for enhancing the product performance.
Drawings
Fig. 1 is a schematic diagram of a wireless transmission performance determining apparatus according to an embodiment of the present invention.
Fig. 2 is a flowchart of a method for determining wireless transmission performance according to an embodiment of the present invention.
Detailed Description
For a better understanding of the nature and technical content of the present invention, reference should be made to the following detailed description of the invention and the accompanying drawings, which are provided for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, a wireless receiving device 11, a control unit 12, a wireless transmitting device 13 and a performance determining unit 14 of the architecture of the wireless transmission performance determining apparatus of the present invention are shown. The wireless receiving device 11 has at least two receiving antennas. The control unit 12 is provided in the wireless reception device 11. The wireless transmitter 13 has at least two transmit antennas, and the at least two transmit antennas and at least two receive antennas of the wireless receiver 11 form a Multiple Input Multiple Output (MIMO) system for transmitting wireless signals to the wireless receiver. The mimo system includes receiving and transmitting, and in the present embodiment, the wireless receiving device 11 is used as a receiving end to evaluate the receiving performance. That is, the present embodiment omits the description of the performance of the wireless receiving device 11 when it is used as the transmitting end. Those skilled in the art will appreciate that in practice, it is more helpful to evaluate the reception performance than the transmission performance (the signal that is received by the wireless signal and is available for demodulation) for the entire mimo system.
The performance determining unit 14 is connected to the wireless receiving device 11 and has application layer software, and the performance determining unit 14 may further include hardware or firmware, that is, the performance determining unit 14 may be only application layer software or a combination of hardware (or firmware) and application layer software. For example, the performance determination unit 14 may include a functional chip (not shown) and an application software (application layer software) of an operating system (os) installed on the wireless receiving device 11, or the application layer software is modified to be installed on a monitoring device (e.g. a personal computer) connected to the wireless receiving device 11, but the invention is not limited thereto. The performance determining unit 14 obtains the error vector magnitude of the wireless signal received from the wireless transmitting device 13 by the wireless receiving device. The control unit 12 of the wireless receiving device 11 is controlled by the performance determining unit 14 to change the radiation characteristics of the at least two receiving antennas according to the error vector magnitude, so as to change the channel matrix formed by the at least two receiving antennas and the at least two transmitting antennas of the wireless transmitting device 13, thereby reducing the error vector magnitude. Preferably, the radiation characteristics of the at least two receiving antennas are changed by changing the radiation patterns of the at least two receiving antennas, such as changing the directivity and the direction of the maximum gain, but the invention is not limited thereto.
Furthermore, the performance determining unit 14 obtains a physical layer data rate (PHY data rate) from a physical layer (defined by an Open System Interconnection (OSI) model) of the wireless receiving device 11, and determines a wireless transmission throughput (throughput) of the wireless receiving device 11 by using the PHY data rate. In contrast to detecting the wtru throughput of the wtru 11, which may suffer from inaccurate measurement values due to system hardware and software integration (differences due to chip performance or integration with the measurement system), or unstable measured wtru throughput due to unstable measurement external environment conditions (which may cause unexpected changes, such as interference), the present embodiment substantially obtains the phy layer data rate to obtain a relatively accurate estimation of the wtru performance.
In the above embodiment, the wireless signal is a Quadrature Amplitude Modulation (QAM) signal, and when the error vector magnitude is greater than a predetermined value, the control unit 12 is controlled by the performance determining unit 14 to change the radiation characteristics of the at least two receiving antennas, so as to increase the signal set size of the wireless signal that the wireless receiving apparatus 11 can demodulate, where the signal set size of the wireless signal is N, and the wireless signal is referred to as N-QAM, such as 64-QAM supported by IEEE 802.11N or 256Q-AM supported by IEEE802.11 ac. In an exemplary embodiment, the wireless signal is, for example, compliant with the IEEE802.11 n or IEEE802.11ac standards defined by the international Institute of Electrical and Electronics Engineers (IEEE), but the invention is not limited thereto. The radio signal may also be a Long Term Evolution (LTE) signal or a signal of a future fifth generation mobile communication system.
Moreover, preferably, the control unit 12 of the above embodiment is independent of and not controlled by a wireless chip (not shown) of the wireless receiving device 11, the wireless chip is used for demodulating the wireless signal, and the physical layer data rate of the physical layer is obtained by the wireless chip responsible for demodulating the wireless signal. For example, the control unit 12 is independent of a common wireless chip, and is a separate unit, such as a Microprocessor (MCU), which operates independently of the wireless chip. Controlling the control unit 12 is a performance judging unit 14.
Referring to fig. 1 and fig. 2, the method is suitable for the wireless transmission performance determining apparatus in the embodiment of fig. 1, and is executed by a performance determining unit 14 having application layer software, and the performance determining unit 14 is connected to the wireless receiving device 11, as shown in the flowchart of fig. 2. The method comprises the following steps. First, in step S110, at least two receiving antennas of the wireless receiving device 11 and at least two transmitting antennas of the wireless transmitting device 13 form a mimo system. Then, in step S120, the error vector magnitude is obtained from the wireless signal received by the wireless receiving apparatus 11 from the wireless transmitting apparatus 13. Next, in step S130, the control unit 12 disposed in the wireless receiving device 11 is controlled by the performance determining unit 14 to change the radiation characteristics of the at least two receiving antennas according to the error vector magnitude, so as to change the channel matrix formed by the at least two receiving antennas and the at least two transmitting antennas of the wireless transmitting device 13, thereby reducing the error vector magnitude. Then, in step S140, the physical layer data rate is obtained from the physical layer of the radio receiving apparatus 11, and the physical layer data rate is used as a determination of the radio transmission throughput of the radio receiving apparatus 11. In another embodiment, the steps S110, S120, S130 and S140 can be combined into a circular algorithm, and the invention also does not limit the circular architecture of the algorithm, which can be modified according to the application requirement.
Preferably, the wireless signal of the wireless transmission performance determining method is a Quadrature Amplitude Modulation (QAM) signal. When the error vector magnitude is greater than the set value, the control unit 12 is controlled by the performance determining unit 14 to change the radiation characteristics of the at least two receiving antennas, so as to increase the signal set size of the wireless signal that the wireless receiving apparatus 11 is capable of demodulating, where the signal set size of the wireless signal is N, and the wireless signal is referred to as N-QAM. Also, preferably, the wireless signal conforms to the IEEE802.11 n or IEEE802.11ac standards as defined by the International Institute of Electrical and Electronics Engineers (IEEE). Preferably, the control unit 12 is independent and not controlled by a wireless chip (not shown) of the wireless receiving device 11, the wireless chip is used for demodulating the wireless signal, and the physical layer data rate of the physical layer is obtained by the wireless chip responsible for demodulating the wireless signal.
Claims (10)
1. A wireless transmission performance judging apparatus, comprising:
a wireless receiving device, which has at least two receiving antennas;
the control unit is arranged on the wireless receiving device;
a wireless transmitter having at least two transmitting antennas, the at least two transmitting antennas and the at least two receiving antennas forming a mimo system for transmitting a wireless signal to the wireless receiver; and
a performance determining unit, connected to the wireless receiving device and having an application layer software, for obtaining an error vector magnitude of the wireless signal received from the wireless transmitting device by the wireless receiving device;
wherein the control unit is controlled by the performance determining unit and changes the radiation characteristics of the at least two receiving antennas according to the error vector magnitude to change a channel matrix formed by the at least two receiving antennas and the at least two transmitting antennas so as to reduce the error vector magnitude;
when the magnitude of the error vector is greater than a set value, the control unit is controlled by the performance determination unit to change the radiation characteristics of the at least two receiving antennas, so as to improve the signal set size of the wireless signal that the wireless receiving device has the capability of demodulating;
the performance determining unit obtains a physical layer data rate from a physical layer of the wireless receiving device, and determines a wireless transmission throughput of the wireless receiving device according to the physical layer data rate.
2. The apparatus of claim 1, wherein the wireless signal is a quadrature amplitude modulation signal.
3. The apparatus according to claim 1, wherein the wireless signal has a signal set size N, and is called N-QAM.
4. The apparatus according to claim 1, 2 or 3, wherein the wireless signal complies with the IEEE802.11 n or IEEE802.11ac standard defined by the International electro-mechanical engineering society.
5. The apparatus according to claim 1, wherein the control unit is independent of and not controlled by a wireless chip of the wireless receiving device, the wireless chip is used for demodulating the wireless signal, and a physical layer data rate of the physical layer is obtained by the wireless chip responsible for demodulating the wireless signal.
6. A wireless transmission performance judging method is executed by a performance judging unit with an application layer software, the performance judging unit is connected with a wireless receiving device, and the wireless transmission performance judging method is characterized by comprising the following steps:
a multiple-input multiple-output system is formed by at least two receiving antennas of the wireless receiving device and at least two transmitting antennas of the wireless transmitting device;
obtaining an error vector magnitude according to a wireless signal received by the wireless receiving device from the wireless transmitting device;
a control unit disposed in the wireless receiving apparatus is controlled by the performance determining unit to change radiation characteristics of the at least two receiving antennas according to the error vector magnitude, so as to change a channel matrix formed by the at least two receiving antennas and the at least two transmitting antennas, thereby reducing the error vector magnitude; when the magnitude of the error vector is greater than a set value, the control unit is controlled by the performance determination unit to change the radiation characteristics of the at least two receiving antennas, so as to improve the signal set size of the wireless signal that the wireless receiving device has the capability of demodulating; and
a physical layer data rate is obtained from a physical layer of the wireless receiving device, and the physical layer data rate is used as a wireless transmission throughput of the wireless receiving device.
7. The method of claim 6, wherein the wireless signal is a quadrature amplitude modulation signal.
8. The method as claimed in claim 6, wherein when the magnitude of the error vector is greater than a predetermined value, the control unit is controlled by the performance determination unit to change radiation characteristics of the at least two receiving antennas, so as to increase a signal set size of the wireless signal that the wireless receiving device is capable of demodulating, the signal set size of the wireless signal being N, and the wireless signal is referred to as N-QAM.
9. The method of claim 6, 7 or 8, wherein the wireless signal conforms to the IEEE802.11 n or IEEE802.11ac standard defined by the International electro-mechanical engineering society.
10. The method of claim 6, wherein the control unit is independent of and not controlled by a wireless chip of the wireless receiving device, the wireless chip is used for demodulating the wireless signal, and the physical layer data rate of the physical layer is obtained by the wireless chip responsible for demodulating the wireless signal.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414526A (en) * | 2013-07-24 | 2013-11-27 | 福建星网锐捷通讯股份有限公司 | Test system and test method of radio frequency identification index |
| CN103780295A (en) * | 2009-09-29 | 2014-05-07 | 索尼公司 | Wireless transmission system |
| EP2846504B1 (en) * | 2013-09-04 | 2016-02-10 | Rohde & Schwarz GmbH & Co. KG | Measuring device and measuring method for joint estimation of parameters based upon data symbols |
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| US9414184B2 (en) * | 2012-02-15 | 2016-08-09 | Maxlinear Inc. | Method and system for broadband near-field communication (BNC) utilizing full spectrum capture (FSC) supporting bridging across wall |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103780295A (en) * | 2009-09-29 | 2014-05-07 | 索尼公司 | Wireless transmission system |
| CN103414526A (en) * | 2013-07-24 | 2013-11-27 | 福建星网锐捷通讯股份有限公司 | Test system and test method of radio frequency identification index |
| EP2846504B1 (en) * | 2013-09-04 | 2016-02-10 | Rohde & Schwarz GmbH & Co. KG | Measuring device and measuring method for joint estimation of parameters based upon data symbols |
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