CN107465442B - Control method and module of multi-antenna device - Google Patents
Control method and module of multi-antenna device Download PDFInfo
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- CN107465442B CN107465442B CN201710646163.0A CN201710646163A CN107465442B CN 107465442 B CN107465442 B CN 107465442B CN 201710646163 A CN201710646163 A CN 201710646163A CN 107465442 B CN107465442 B CN 107465442B
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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
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
- H04B7/0814—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching based on current reception conditions, e.g. switching to different antenna when signal level is below threshold
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/23—Indication means, e.g. displays, alarms, audible means
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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
- 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
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
- H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/25—Flow control; Congestion control with rate being modified by the source upon detecting a change of network conditions
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- 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
Abstract
A control method and module of a multi-antenna device includes: transmitting a wireless packet from the wireless transmission device to a plurality of antennas of the multi-antenna device; the performance optimizing unit of the multi-antenna device sequentially selects one of the plurality of antennas to be connected with the wireless chip of the multi-antenna device; the efficiency optimizing unit selects one antenna corresponding to the received data rate having the largest value as a designated receiving antenna, and selects the other antenna corresponding to the received data rate having the next largest value as a standby receiving antenna; the performance optimizing unit receives the wireless packet by the appointed receiving antenna in a transmission period, at least one test interval is inserted in the transmission period, and the wireless packet is received by the appointed receiving antenna instead of the appointed receiving antenna by the standby receiving antenna in the test interval. The effect of dynamically increasing the received data rate of wireless packets can be achieved with low cost and multiple antenna devices without having to resort to complex specifications such as wireless communication standards and communication protocols one by one.
Description
Technical Field
The invention belongs to the technical field of wireless transmission, and particularly relates to a control method of a multi-antenna device and a control module of the multi-antenna device.
Background
The creation of wireless networks and mobile communication devices (also referred to as "mobile communication devices", hereinafter referred to as "mobile communication devices") with high-speed transmission capability is a highly-pursued goal of the related industry, and the evolution of various wireless transmission standards has continuously advanced to increase data transmission rate (data rate), for example, in the IEEE 802.11 standard of the current Wireless Local Area Network (WLAN), the single channel rate has been increased to at least 500Mbps from the 802.11ac standard, which has been widely used at present, to the 802.11ac standard, where the maximum original data transmission rate of the early 802.11a standard is 54 Mbps. In terms of mobile communications, the standard of the future generation of the fifth mobile communication system (5G) is a requirement for defining a surprising data transmission rate of 1 Gbps.
However, the formulation of the wireless transmission standard not only requires a digital chip with enough operation processing capability to perform signal encoding and decoding, but also requires a correspondingly improved rf circuit to be matched with an antenna (or antenna system) with enough bandwidth and high efficiency. In fact, the upper limit of the actual data transmission rate of the wireless product that can be provided by the wireless product vendor is limited not only by the respective performance limitations of the various rf components, analog modules and digital modules, but also in part by the integration of all the limited components and module hardware into the software algorithm. Conventionally, in the wireless transmission process, since the increase or decrease of the wireless data transmission rate is determined by a wireless chip (wireless chip), the rf device and the antenna device are in a passive state, and no control is exercised. But there are still limitations to finding a solution to increase the data transmission rate only from the perspective of the wireless chip, and the technical solution to be described below is generated in this context.
Disclosure of Invention
The present invention provides a control method and a module for a multi-antenna device, which utilize an algorithm of a multi-antenna system implemented by an efficiency optimization unit outside a wireless chip to replace the conventional method of analyzing signal strength by only the wireless chip, so that the multi-antenna device can dynamically increase the received data rate of wireless packets.
The task of the present invention is accomplished by a control method of a multi-antenna device for wirelessly transmitting data between a wireless transmission device and the multi-antenna device, the method comprising:
transmitting a wireless packet from the wireless transmitting device to a plurality of antennas of the multi-antenna device;
the performance optimizing unit of the multi-antenna device sequentially selects one of a plurality of antennas to be connected with a wireless chip of the multi-antenna device so as to sequentially obtain a receiving data rate corresponding to each of the plurality of antennas from the wireless chip;
the performance optimizing unit selects one of the plurality of antennas corresponding to the received data rate having the maximum value as a designated receiving antenna, and selects another one of the plurality of antennas corresponding to the received data rate having the next maximum value as a stand-by receiving antenna;
the performance optimizing unit receives the wireless packet from the wireless transmitting device by the designated receiving antenna in a transmission period, inserts at least one test interval in the transmission period, and utilizes the standby receiving antenna to replace the designated receiving antenna to receive the wireless packet from the wireless transmitting device in the test interval, wherein the time length of the test interval is shorter than the transmission period, and the time length of the test interval is shorter than an unimpeded test time; and
the performance optimizing unit judges whether the received data rate in the test section is greater than the received data rate in the transmission period, and designates the standby receiving antenna as the updated designated receiving antenna when the received data rate in the test section is greater than the received data rate in the transmission period.
In one embodiment of the present invention, the performance optimization unit determines the unimpeded test time according to a traffic condition of the wireless packets received by the multi-antenna device.
In another specific embodiment of the present invention, the performance optimization unit shortens the unimpeded test time when the received data rate of the test interval is below an unimpeded threshold, or shortens the unimpeded test time when the received data rate of the test interval is below a difference between the received data rates within the transmission period exceeding a difference threshold.
In yet another embodiment of the present invention, the performance optimization unit designates the standby receiving antenna as the updated designated receiving antenna, and then receives the wireless packet from the wireless transmitting device with the updated designated receiving antenna.
In yet another embodiment of the present invention, when the received data rate in the test interval is smaller than the received data rate in the transmission period, the performance optimization unit maintains the original designated receiving antenna as the updated designated receiving antenna to receive the wireless packet from the wireless transmitting device.
Another object of the present invention is achieved by a control module of a multi-antenna device for mounting to the multi-antenna device, the control module comprising:
a plurality of antennas for receiving wireless packets from a wireless transmitting device; and
a performance optimizing unit that sequentially selects one of a plurality of antennas of a multi-antenna device to be connected to a wireless chip of the multi-antenna device and sequentially obtains a reception data rate corresponding to each of the plurality of antennas from the wireless chip, the performance optimizing unit comprising:
a microprocessor;
an antenna controller connected with the microprocessor and connected between the plurality of antennas and the wireless chip; and
an application program for controlling the microprocessor to generate a control signal for controlling the antenna controller;
wherein the performance optimizing unit selects one of the plurality of antennas corresponding to the received data rate having the maximum value as a designated receiving antenna, and selects another one of the plurality of antennas corresponding to the received data rate having the next maximum value as a stand-by receiving antenna;
the performance optimizing unit receives the wireless packet from the wireless transmitting device by the designated receiving antenna in a transmission period, inserts at least one test interval in the transmission period, and uses the standby receiving antenna to replace the designated receiving antenna to receive the wireless packet from the wireless transmitting device in the test interval, wherein the time length of the test interval is shorter than the transmission period, and the time length of the test interval is shorter than an unimpeded test time;
the performance optimizing unit determines whether the received data rate in the test section is greater than the received data rate in the transmission period, and designates the standby receiving antenna as the updated designated receiving antenna when the received data rate in the test section is greater than the received data rate in the transmission period.
In yet another embodiment of the present invention, the microprocessor and the antenna controller are disposed on an antenna control circuit board.
In a further embodiment of the present invention, the performance optimization unit determines the unimpeded test time according to a traffic condition of the wireless packets received by the multi-antenna device.
In a further specific embodiment of the present invention, the performance optimization unit shortens the unimpeded test time when the received data rate of the test interval is below an unimpeded threshold, or shortens the unimpeded test time when the received data rate of the test interval is below a difference between the received data rates within the transmission period by more than a difference threshold.
In yet another specific embodiment of the present invention, the multi-antenna device is a notebook computer, a laptop computer, a tablet computer, a single-body computer, a smart television, a small base station, a router, or a smart phone.
The technical scheme provided by the invention has the technical effects that: the algorithm of the multi-antenna system realized by the performance optimization unit outside the wireless chip can be utilized to replace the traditional method of analyzing the signal strength only by the wireless chip, and at least one working interval (test interval) of the standby receiving antenna is utilized to try to judge and read the receiving antenna better than the currently set designated receiving antenna under the condition of not impeding the original normal data (wireless packet) transmission efficiency, so that the effect of dynamically improving the receiving data rate of the wireless packet can be realized by a multi-antenna device with quite low cost without moving to the complicated specifications such as the wireless communication standard and the communication protocol one by one.
Drawings
Fig. 1 is a flowchart of a control method of a multi-antenna device according to an embodiment of the present invention.
Fig. 2 is a block diagram of a control module of a multi-antenna device according to an embodiment of the present invention.
In the figure, S110, S120, S130, S140, S150, S160, S170: step (a)
100: multi-antenna device
1: control module
200: wireless transmission device
11a, 11b …, 11n: antenna
12: efficiency optimization unit
101: wireless chip
121: microprocessor
122: antenna controller
123: application layer
123a: application program
124: an antenna control circuit board.
Detailed Description
The embodiment of the invention is not limited to the type of wireless standard used for wireless transmission between the multi-antenna device and the wireless transmission device, and can be applied to IEEE 802.11 standard, long Term Evolution (LTE) standard, or future fifth generation mobile communication standard (5G), for example. The wireless transmission device and the multi-antenna device according to the embodiments of the present invention have various implementation forms according to application situations, and the wireless transmission device and the multi-antenna device may be the same wireless device or different wireless devices. The wireless transmission device is, for example but not limited to, a notebook computer, a laptop computer, a tablet computer, a body computer, a smart television, a small base station, a router, or a smart phone, and the multi-antenna device is, for example but not limited to, a notebook computer, a laptop computer, a tablet computer, a body computer, a smart television, a small base station, a router, or a smart phone.
Referring to fig. 1, fig. 1 is a flowchart of a control method of a multi-antenna device according to an embodiment of the invention. The control method of the multi-antenna device is used for wirelessly transmitting data between the wireless transmission device and the multi-antenna device, in this embodiment, the multi-antenna device is described as a receiving party, and the wireless transmission device is used as a transmitting party, but when the multi-antenna device is actually applied to a product, the multi-antenna device usually also has wireless transmission capability, that is, the multi-antenna device has a plurality of antennas responsible for receiving and transmitting wireless signals, and also has a wireless chip (including a radio frequency transceiver, an analog-digital converter, a digital-analog converter, a digital signal processor, etc. to realize relevant demodulation, modulation, coding, decoding functions of the wireless signals). And, the multi-antenna device has a performance optimizing unit independent of the wireless chip.
The control method of the multi-antenna device comprises the following steps: step S110, transmitting wireless packets to a plurality of antennas of the multi-antenna device by the wireless transmission device; next, in step S120, the performance optimizing unit of the multi-antenna device sequentially selects one of the plurality of antennas (i.e. one of the plurality of antennas) to be connected to the wireless chip of the multi-antenna device, so as to sequentially obtain a received data rate corresponding to each of the plurality of antennas from the wireless chip; then, in step S130, the performance optimizing unit selects one of the plurality of antennas corresponding to the received data rate having the maximum value as a designated receiving antenna, and selects an antenna corresponding to the received data rate having the next largest value (i.e., another one of the plurality of antennas) as a standby receiving antenna; next, in step S140, the performance optimizing unit receives the wireless packet from the wireless transmitting device with the designated receiving antenna in the transmission period, inserts at least one test interval in the transmission period, and uses the standby receiving antenna to replace the designated receiving antenna to receive the wireless packet from the wireless transmitting device in the test interval, wherein the time length of the test interval is shorter than the transmission period, and the time length of the test interval is not longer than (i.e. shorter than) the unimpeded test time. Next, in step S150, the performance optimizing unit determines whether the received data rate in the test interval is greater than the received data rate in the transmission period, and when the received data rate in the test interval is greater than the received data rate in the transmission period, step S160 is performed, and the performance optimizing unit designates the standby receiving antenna as the updated designated receiving antenna, and receives the wireless packet from the wireless transmitting device with the updated designated receiving antenna. Otherwise, when the received data rate in the test interval is not greater than (i.e. smaller than) the received data rate in the transmission period, step S170 is performed, and the performance optimization unit maintains the original designated receiving antenna as the updated designated receiving antenna to receive the wireless packet from the wireless transmission device. In fact, step S170 does not change the selection of the designated receiving antenna, and remains unchanged. Step S160 and step S170 are performed to receive the wireless packet from the wireless transmitter using the updated designated receiving antenna, and the received data rate is equal to or greater than the received data rate in step S140, so as to achieve the optimization.
Next, taking the flow shown in fig. 1 as an example (but not limited to this), the steps S160 and S170 are followed by returning to step S130, determining the designated receiving antenna and the standby receiving antenna, then (step S140) continuing to receive the wireless packet from the wireless transmitting device with the updated designated receiving antenna in the next transmission period, and then returning to step S130 to perform the periodic cycle after continuing to steps S150, S160 and S170. Thus, the set designated receiving antenna can be dynamically updated in each cycle, so that the multi-antenna device can quickly select the best receiving antenna when the external environment of wireless transmission changes in the process of receiving wireless packets, and a standby receiving antenna is kept for alternative.
In another embodiment, unlike the loop flow of fig. 1, another example of implementing dynamic optimization of circularity is illustrated, after the original designated receiving antenna is replaced with the standby receiving antenna in step S160, since the new standby receiving antenna is not known, the process returns to step S130; in contrast, since the designated receiving antenna is not changed after step S170, the process may directly return to step S140 after step S170 to continuously detect whether the received data rate achieved by the standby receiving antenna is sufficient to replace (receive data rate is larger than) the original designated receiving antenna. In practical application, in order to achieve the non-abnormal state with minimum algorithm processing burden, minimum algorithm time consumption and minimum data rate fluctuation range or keep no lower than a lower data rate limit, the front-back order and relation between the loop steps may be changed according to the actual needs, or an additional algorithm mechanism is newly added under the algorithm concept of the embodiment of the present invention.
In the following, the applicant further describes the details and purpose of the various steps. Step S110 represents that each antenna of the multi-antenna device can receive the wireless packet, but it is not yet determined which antenna has better performance. In step S120, the wireless chip of the multi-antenna device can determine the corresponding received data rate when any antenna is selected as the receiving antenna, and the received data rate achieved by each antenna is often different when the antenna is selected as the receiving antenna due to the environmental differences of the space where the antenna is located, and differences of the actual signal source direction, phase and strength (direct transmission without reflection or one or more reflections). Next, step S130 is to determine the best receiving antenna and the next best receiving antenna, but since the receiving situation usually changes in real time with time, the known designated receiving antenna is not necessarily the best receiving antenna in the future (e.g. next time period: next second or next 100 milliseconds (ms) or next 10 milliseconds (ms)) although the best receiving antenna at the time of step S130 (corresponding receiving data rate is the largest among all antennas). The present embodiment utilizes the known sub-optimal receiving antenna (standby receiving antenna) as an alternative to the future designated receiving antenna.
Further, step S140 is further described. In order not to affect the normal data transmission, the transmission is performed according to the result of step S130 during the transmission period representing the normal transmission, but a test interval is inserted during the normal transmission process, which does not affect the overall performance of the transmission, in an attempt to make the wireless chip receive some data (packets) by using the standby receiving antenna, and make the performance optimizing unit evaluate whether the standby receiving antenna can replace the known designated receiving antenna. In order to ensure the normal transmission of data, the test interval, transmission period and unimpeded test time are described in the following with respect to step S140. First, regarding the transmission period, since it is a period of normal transmission with the designated reception antenna set previously before correcting (or updating) the best reception antenna (designated reception antenna), the time length of the test section should be much shorter than the transmission period of normal transmission, the unimpeded test time is an upper limit allowable in terms of the time length of the test section, and the unimpeded test time may be preset fixed, for example, 10 milliseconds (ms), 20 ms, or a program variable.
In one embodiment, the performance optimization unit may determine the unimpeded test time based on, for example, traffic conditions (traffic condition) of wireless packets received by the multi-antenna device. For example, when the traffic condition is a traffic peak, the unimpeded test time may be reduced because the test interval for performing the test (for the standby antenna to receive packets) may be such that the received data rate is substantially reduced instantaneously (but not necessarily, depending on the overall performance of the actual device operation), but may be increased when the traffic is low without affecting the overall condition of the received data rate. As an example, according to the 802.11a/b/g/n/ac standard applied to Wireless Local Area Networks (WLANs), the unimpeded test time is preferably in the range of 5 milliseconds (ms) to 50 ms (ms) with the change of traffic conditions, so that the time length of the test interval is shorter than or equal to the upper limit value (the upper limit value is 5 ms to 50 ms). In practical applications, the ratio of the test interval for performing the test to the transmission period for normal transmission is adjustable (not necessarily fixed) according to the communication standard and protocol used, and only a short switching interval (i.e. test interval) is required to obtain the change value of the data rate in this embodiment, which is used as the optimization basis.
In another embodiment, the performance optimization unit shortens the unimpeded test time when the received data rate of the test interval is below an unimpeded threshold, or shortens the unimpeded test time when the received data rate of the test interval is below a difference threshold that is greater than the difference between the received data rates during the transmission period. Considering the situation of the unimpeded threshold, the received data rate caused by the standby receiving antennas in the test interval cannot be set below an expected lower limit, which is used as the unimpeded threshold, for example, in order to maintain the high-efficiency transmission state, it is desirable to keep the received data rate at any time not below an expected lower limit (of course, if all antennas cannot achieve the high data rate due to environmental factors, the decrease of the received data rate corresponding to any antenna is necessarily expected, which is not a problem to be solved by the present invention). On the other hand, the unimpeded test time can be correspondingly shortened without making the difference between the received data rate of the test section lower than the received data rate in the transmission period exceed a difference threshold. The difference threshold is set so that the instantaneous variation of the data rate in the whole data transmission process does not affect the overall performance of the transmission performance. From the above, the unimpeded threshold is set or the differential threshold is set, for example, to avoid blocking or momentary interruption of the data stream.
Furthermore, since the test period in which the test is actually performed may be equal to or shorter than the set unimpeded test time, in order to further secure the high-performance transmission, the test period may be set to be, for example, half, two thirds, or five-quarters of the time period of the unimpeded test time, to establish a safety Margin (Margin), ensuring that performance is not deteriorated more in a higher standard. Next, exemplary embodiments for implementing the control method of the foregoing embodiment with a control module will be described below.
Referring to fig. 2, fig. 2 is a block diagram of a multi-antenna control device and a control module of the multi-antenna control device according to an embodiment of the invention. The control module 1 is configured to be mounted on the multi-antenna device 100, and the control module 1 includes a plurality of antennas 11a, 11b …, 11n and a performance optimizing unit 12. The plurality of antennas 11a, 11b …, 11n are configured to receive wireless packets from the wireless transmitting device 200. The performance optimizing unit 12 sequentially selects one of the plurality of antennas 11a, 11b …, 11n to be connected to the wireless chip 101 of the multi-antenna device 100, to sequentially obtain a reception data rate corresponding to each antenna from the wireless chip 101. The performance optimization unit 12 includes a microprocessor 121, an antenna controller 122, and an application program 123a at an application layer 123. The antenna controller 122 is connected to the microprocessor 121 and is connected between the plurality of antennas 11a, 11b …, 11n and the wireless chip 101. The application 123a controls the microprocessor 121 to generate control signals to control the antenna controller 122. The performance optimizing unit 12 selects an antenna corresponding to the received data rate with the largest value as a designated receiving antenna, and selects an antenna corresponding to the received data rate with the next largest value as a standby receiving antenna. The performance optimizing unit 12 receives the wireless packet from the wireless transmitting device 200 with a designated receiving antenna in the transmission period, inserts at least one test interval in the transmission period, and uses the standby receiving antenna to replace the designated receiving antenna in the test interval to receive the wireless packet from the wireless transmitting device 2, wherein the time length of the test interval is shorter than the transmission period, and the time length of the test interval is not longer than the unimpeded test time. The performance optimizing unit 12 determines whether the received data rate in the test interval is greater than the received data rate in the transmission period, and when the received data rate in the test interval is greater than the received data rate in the transmission period, the performance optimizing unit 12 designates the standby receiving antenna as an updated designated receiving antenna, and the updated designated receiving antenna receives the wireless packet from the wireless transmitting device.
In the embodiment of fig. 2, the microprocessor 121 and the antenna controller 122 are disposed on the antenna control circuit board 124. That is, the antenna control circuit board 124 carrying the microprocessor 121 and the antenna controller 122 can be installed in a modular manner in the multi-antenna device and mediate the antennas 11a, 11b …, 11n and the wireless chip 101. The application program 123a of the performance optimization unit 12 may be stored in the firmware of the operating system of the multi-antenna device 100, or may be installed in the operating system of the multi-antenna device 100 in a plug-in or driver mode. For product applications, the antenna control circuit board 124 with the microprocessor 121 and the antenna controller 122 is preferably configured in a modularized manner, so as to be generally installed in multiple antenna devices of various models, but not limited to the differences of the application models, so that the wireless chip 101 does not need to make modification settings according to the differences of the requirements of various multiple antenna applications, thereby simply saving the high cost of changing the specifications of the wireless chip 101, and the antenna control right (the microprocessor 121 and the application program 123 a) arranged outside the wireless chip 101 provides greater design flexibility when the antenna design needs to be changed, conveniently changes the control mode of the antenna, and can solve the requirements of the antenna design end with lower cost. The application program 123a may also obtain the control status of the antenna controller 122 for the antennas 11a, 11b …, 11n from the microprocessor 121, for example, to let a developer or a user of the multi-antenna device 100 monitor the selection result and the operation mode of the antennas.
In addition, compared to the embodiment of fig. 2, the multi-antenna control module 1 stores the application program 123a of the performance optimization unit 12 therein, and in another embodiment, if the multi-antenna device 100 is controlled by an external terminal (or monitoring device), the application program 123a of the performance optimization unit 12 may be stored in an application layer of the external terminal (or monitoring device) and control the multi-antenna control module 1 of the multi-antenna device 100 in a software monitoring manner.
Still further, in another embodiment, the performance optimization unit 12 may determine the unimpeded test time according to the traffic conditions of the wireless packets received by the multi-antenna device 100 as described with reference to the method of the embodiment of fig. 1. In yet another embodiment, the performance optimization unit 12 shortens the unimpeded test time when the received data rate of the test interval is below an unimpeded threshold, or the performance optimization unit 12 shortens the unimpeded test time when the difference in the received data rate of the test interval below the received data rate during the transmission period exceeds a differential threshold.
In summary, the technical scheme provided by the invention overcomes the defects in the prior art, successfully completes the task of the invention, and faithfully honors the technical effects carried by the applicant in the technical effect column above.
Claims (6)
1. A method for controlling a multi-antenna device for wirelessly transmitting data between a wireless transmission device and the multi-antenna device, the method comprising:
transmitting a wireless packet from the wireless transmitting device to a plurality of antennas of the multi-antenna device;
the performance optimizing unit of the multi-antenna device sequentially selects one of a plurality of antennas to be connected with a wireless chip of the multi-antenna device so as to sequentially obtain a receiving data rate corresponding to each of the plurality of antennas from the wireless chip;
the performance optimizing unit selects one of the plurality of antennas corresponding to the received data rate having the maximum value as a designated receiving antenna, and selects another one of the plurality of antennas corresponding to the received data rate having the next maximum value as a stand-by receiving antenna;
the performance optimizing unit receives a wireless packet from the wireless transmitting device by the designated receiving antenna in a transmission period, inserts at least one test interval in the transmission period, and utilizes the standby receiving antenna to replace the designated receiving antenna to receive the wireless packet from the wireless transmitting device in the test interval, wherein the time length of the test interval is shorter than the transmission period, the time length of the test interval is shorter than an unimpeded test time, the performance optimizing unit determines the unimpeded test time according to the flow condition of the wireless packet received by the multi-antenna device, and shortens the unimpeded test time when the received data rate of the test interval is lower than an unimpeded threshold, or shortens the unimpeded test time when the difference between the received data rates of the test interval and the received data rate in the transmission period exceeds a difference value; and
the performance optimizing unit judges whether the received data rate in the test section is greater than the received data rate in the transmission period, and designates the standby receiving antenna as the updated designated receiving antenna when the received data rate in the test section is greater than the received data rate in the transmission period.
2. The method according to claim 1, wherein the performance optimizing unit designates the standby receiving antenna as the updated designated receiving antenna, and then receives the wireless packet from the wireless transmitting device with the updated designated receiving antenna.
3. The method according to claim 1, wherein the performance optimization unit maintains the original designated receiving antenna as the updated designated receiving antenna to receive the wireless packet from the wireless transmitting device when the received data rate in the test interval is smaller than the received data rate in the transmission period.
4. A control module of a multi-antenna device for performing the control method of claim 1 for controlling the multi-antenna device, the control module comprising:
a plurality of antennas for receiving wireless packets from a wireless transmitting device; and
a performance optimizing unit that sequentially selects one of a plurality of antennas of a multi-antenna device to be connected to a wireless chip of the multi-antenna device and sequentially obtains a reception data rate corresponding to each of the plurality of antennas from the wireless chip, the performance optimizing unit comprising:
a microprocessor;
an antenna controller connected with the microprocessor and connected between the plurality of antennas and the wireless chip; and
an application program for controlling the microprocessor to generate a control signal for controlling the antenna controller;
wherein the performance optimizing unit selects one of the plurality of antennas corresponding to the received data rate having the maximum value as a designated receiving antenna, and selects another one of the plurality of antennas corresponding to the received data rate having the next maximum value as a stand-by receiving antenna;
the performance optimizing unit receives a wireless packet from the wireless transmitting device by using the designated receiving antenna in a transmission period, inserts at least one test interval in the transmission period, and uses the standby receiving antenna to replace the designated receiving antenna in the test interval to receive the wireless packet from the wireless transmitting device, wherein the time length of the test interval is shorter than the transmission period, the time length of the test interval is shorter than an unimpeded test time, the performance optimizing unit determines the unimpeded test time according to the flow condition of the wireless packet received by the multi-antenna device, and shortens the unimpeded test time when the received data rate of the test interval is lower than an unimpeded threshold, or shortens the unimpeded test time when the received data rate of the test interval is lower than a difference value of the received data rates in the transmission period by more than a difference threshold;
the performance optimizing unit determines whether the received data rate in the test section is greater than the received data rate in the transmission period, and designates the standby receiving antenna as the updated designated receiving antenna when the received data rate in the test section is greater than the received data rate in the transmission period.
5. The control module of claim 4, wherein the microprocessor and the antenna controller are disposed on an antenna control circuit board.
6. The control module of claim 4, wherein the multi-antenna device is a notebook computer, a laptop computer, a tablet computer, a unitary computer, a smart television, a small base station, a router, or a smart phone.
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