CN109525291A - Method of controlling antenna and terminal installation for multiple input multiple output communications - Google Patents
Method of controlling antenna and terminal installation for multiple input multiple output communications Download PDFInfo
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- CN109525291A CN109525291A CN201910030572.7A CN201910030572A CN109525291A CN 109525291 A CN109525291 A CN 109525291A CN 201910030572 A CN201910030572 A CN 201910030572A CN 109525291 A CN109525291 A CN 109525291A
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- receiving antenna
- terminal installation
- antenna
- multiple input
- output communications
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Classifications
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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
-
- 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
- H04B17/318—Received signal strength
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
-
- 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
Abstract
The invention discloses a kind of method of controlling antenna for multiple input multiple output communications, for the terminal installation with N number of receiving antenna.The method includes: that terminal installation selects n receiving antenna of signal strength instruction with higher as execution receiving antenna；Terminal installation arbitrarily selects k a to constitute even numbers receiving antenna configuration in these antenna, and receives wireless signal from far end device with one of receiving antenna configuration；K of terminal installation change even numbers receiving antenna configuration executes the radiation regimes of receiving antenna, and to establish even numbers communication performance, it is selected that each communication, which shows, and it is determined that k of radiation regimes executes the reception data rate of receiving antenna；For each communication performance, received signal strength indicator median is set, obtains the absolute value differences of the received signal strength indicator of k execution receiving antenna；And in even numbers communication performance, choosing, there is the communication of the smallest absolute value differences to show, and promote data rate whereby.
Description
Technical field
It is especially a kind of for multiple input multiple output communications the present invention relates to a kind of method of controlling antenna and terminal installation
Method of controlling antenna and terminal installation.
Background technique
It is the target of related industry all the time that creating, which has the wireless network of high speed transmission abilities and mobile communication equipment,
The differentiation of various wireless transmission standards is continued for ground improve data transfer rate (abbreviation data transfer rate or data rate, data
Rate), such as in 802.11 standard of IEEE of existing Wireless LAN (WLAN), from the maximum of early stage 802.11a standard
Original data transmissions rate is 54Mbps, develops to the 802.11ac standard used extensively at present and has improved single channel rate
To at least 500Mbps.In terms of mobile communication, following the 5th popular Generation Mobile Communication System (5G) its standard is even more to define
The requirement target of the surprising message transmission rate of 1Gbps.
However, the formulation of wireless transmission standards not only needs the digital chip with enough calculation processing powers to execute signal
Coding and decoding cooperate enough bandwidths and efficient antenna (or antenna system) with greater need for the corresponding radio circuit promoted.It is real
On border, the actual data transfer rate upper limit for the wireless product that wireless product supplier is capable of providing is not merely limited to various radio frequencies
All elements that the reason of element, analogy mould group and the digital respective efficiency of mould group limit, more there is most is constrained to
Mould group hardware is matched with the degree of integration of software algorithm.Traditionally, during wireless transmission, the increase of wireless data transmission rate or
It reduces and is mainly determined by the control of wireless chip (Wireless chip) with channel status (external transmission environment), and penetrate
Frequency element and antenna element are to weigh in passively status without any control.It is only found by the viewpoint of wireless chip and promotes number
Solution according to transmission rate is still to have many restrictions.
Summary of the invention
In view of the above-mentioned defects in the prior art, the object of the present invention is to provide a kind of days for multiple input multiple output communications
Line control method, to achieve the effect that promote data transmission rate.It is more for multi input that it is a further object of the present invention to provide one kind
Export the terminal installation of communication.
The technical scheme is that such: a kind of method of controlling antenna for multiple input multiple output communications, it is described
Method of controlling antenna is used for the terminal installation with N number of receiving antenna, and the method for controlling antenna includes:
The terminal installation selects to connect described in n of signal strength instruction with higher in N number of receiving antenna
Antenna is received as receiving antenna is executed, it is all positive integer that wherein N, which is greater than n, N and n, and n is greater than 2；
The terminal installation arbitrarily selects k a to constitute even numbers receiving antenna group in the n execution receiving antennas
State, and wireless signal is received with one of receiving antenna configuration described in these and from a far end device, wherein n is greater than k, k
It is greater than or equal to 2 positive integer；
The terminal installation changes the k radiation regimes for executing receiving antenna of these receiving antenna configurations,
With establish even numbers communication performance, wherein each it is described communication performance be it is selected and it is determined that radiation regimes k institute
State the reception data rate for executing receiving antenna；
For communicating performance described in each, a received signal strength indicator median is set, the k execution is obtained and connects
Receive the absolute value differences of the received signal strength indicator of antenna；And
In these described communications performances, choosing has the communication performance of the smallest absolute value differences using as optimization
Multiple input multiple output communications.
Further, change the k execution receiving antennas of these receiving antenna configurations in the terminal installation
Radiation regimes with establish these described communications performance the step of include:
Control each described at least reflector element or an at least earth-current control unit for executing receiving antenna.
Further, the mode of each reflector element for executing receiving antenna of the control includes: selection
It is not turned on the diode with diode current flow half-wave rope, or selection and makes to extend circuit using described in capacitor extension
The path of half-wave rope.
Further, the mode packet of each earth-current control unit for executing receiving antenna of the control
Include: selection is with switch conduction earth-current portion to being grounded, or selection is not turned on the switch and to be connected to ground capacity described
Between earth-current portion and the ground connection.
Further, the far end device has m transmission antenna, and to send wireless signal to the terminal installation, m is
Positive integer more than or equal to 2, when the terminal installation knows that the m transmission antennas of the far end device have changed, institute
It states terminal installation and changes the k radiation regimes for executing receiving antenna of these receiving antenna configurations to re-establish this
A little communication performances.
A kind of terminal installation for multiple input multiple output communications, comprising:
N number of receiving antenna connects wireless chip；
Applying unit connects the wireless chip, is believed by the reception that the wireless chip receives these receiving antennas
The reception data rate of number intensity instruction and multiple input multiple output communications, wherein the applying unit is in N number of receiving antenna
Select the n receiving antennas of signal strength instruction with higher as receiving antenna is executed, wherein N is greater than n, N and n all
For positive integer, n is greater than 2；Wherein, the applying unit arbitrarily selects k a to constitute even numbers in the n execution receiving antennas
A receiving antenna configuration, and wireless signal is received with one of receiving antenna configuration described in these and from far end device,
Middle n is greater than k, and k is greater than or equal to 2 positive integer；Wherein, the applying unit changes the k of these receiving antenna configurations
A radiation regimes for executing receiving antenna, to establish even numbers communication performance, wherein each described communication performance is institute
Select and it is determined that a reception data rates for executing receiving antenna of the k of radiation regimes；Wherein for leading to described in each
Letter performance, sets received signal strength indicator median, and the applying unit obtains the k reception letters for executing receiving antenna
The absolute value differences of number intensity instruction；Wherein, in these described communication performances, the applying unit is chosen with the smallest absolutely
The communication of value difference value is showed using the multiple input multiple output communications as optimization；And
Control unit connects the applying unit and N number of receiving antenna, is controlled by the applying unit to control N
The k radiation regimes for executing receiving antenna in a receiving antenna.
Further, described control unit is controlled by the applying unit to control each execution receiving antenna
An at least reflector element or at least an earth-current control unit.
Further, described control unit control diode is to select conducting half-wave rope, or selection to be not turned on
The diode and the path for making extension circuit that capacitor be utilized to extend the half-wave rope.
Further, described control unit control switch is to select conducting earth-current portion to ground connection, or selection to be not turned on
It is described to switch and be connected to ground capacity between the earth-current portion and the ground connection.
Further, the far end device has m transmission antenna, and to send wireless signal to the terminal installation, m is
Positive integer more than or equal to 2, when the terminal installation knows that the m transmission antennas of the far end device have changed, institute
It states terminal installation and changes the k radiation regimes for executing receiving antenna of these receiving antenna configurations to re-establish this
A little communication performances.
The advantages of technical solution provided by the present invention, is that the present invention cooperates the radiation regimes control of antenna, utilizes general
The received signal strength indicator absolute value differences of each antenna minimize, further to promote the data of multiple input multiple output communications
Rate has very high industry application value.
Detailed description of the invention
Fig. 1 is the flow chart of the method for controlling antenna provided in an embodiment of the present invention for multiple input multiple output communications.
Fig. 2 is the flow chart of the sub-step of the step S130 comprising Fig. 1.
Fig. 3 is the schematic diagram of execution receiving antenna and its reflector element provided in an embodiment of the present invention.
Fig. 4 be another embodiment of the present invention provides execution receiving antenna schematic diagram.
Fig. 5 is the module map of the terminal installation provided in an embodiment of the present invention for multiple input multiple output communications.
Specific embodiment
Below with reference to embodiment, the invention will be further described, but not as a limitation of the invention.
Fig. 1 is please referred to, the present embodiment provides a kind of method of controlling antenna for multiple input multiple output communications, for having
The terminal installation of N number of antenna.The method is stored in the firmware or software in terminal installation, and utilizes the behaviour of terminal installation itself
Make system execution.The terminal installation can be laptop, laptop computer, tablet computer, integrated computer, intelligence electricity
Depending on, small base station or wireless router, but therefore do not limit.It the described method comprises the following steps.Firstly, step S110 is carried out,
Terminal installation selects n receiving antenna of signal strength instruction (RSSI) with higher as execution in N number of receiving antenna
Receiving antenna, it is all positive integer that wherein N, which is greater than n, N and n, and n is greater than 2.A signal strength instruction can be set in step S110
The floating that absolute threshold value or a signal strength according to all N number of receiving antennas indicate is with respect to threshold value, either
N number of receiving antenna is classified as two groups, one group indicates higher group for signal strength, and another group lower for signal strength instruction
Group, and selection signal intensity indicate the antenna in higher group as execute receiving antenna.Using multiple-input and multiple-output
(MIMO) specification of transmission communication is, for example, 802.11n, 802.11ac either existing forth generation mobile communication specification, or
It is the 5th following third-generation mobile communication specification.
Then, step S120 is carried out, terminal installation selects k arbitrarily in n execution receiving antenna to constitute even numbers
Receiving antenna configuration, and wireless signal is received with one of described even numbers receiving antenna configuration and from far end device,
Middle n is greater than k, and k is greater than or equal to 2 positive integer.It is, in all n execution receiving antennas being selected according to
According to required number of antennas k, and k therein are taken as antenna configurations, to carry out the actual operation of reception data.
Then, step S130 is carried out, terminal installation changes k execution receiving antenna of the even numbers receiving antenna configuration
Radiation regimes, with establish even numbers communication performance, wherein each communication performance is selected and it is determined that radiation regimes
K execution receiving antenna reception data rate.Under the conditions of being normally applied, according to reciprocal theorem (reciprocity
Theorem), radiation regimes be equal to reception state, usual research staff can analyzing radiation state as research and development means.Base of the present invention
Yu Yaorang multiple input multiple output communications play the purpose of better efficiency (promoting data rate), using with even numbers radiation regimes
Antenna, it may also be said to be using its mode of operation of day line traffic control realization have multiple radiation patterns (each mode of operation have
Some radiation patterns are all different).Such as first execution receiving antenna ATA has even numbers radiation regimes RA1, RA2, RA3 ...,
Second execution receiving antenna ATB has even numbers radiation regimes RB1, RB2, RB3 ..., and third executes receiving antenna ATC tool
There are even numbers radiation regimes RC1, RC2, RC3 ..., and so on.Terminal installation is in running, when selection any two execution connects
Receive antenna to constitute receiving antenna configuration (i.e. k=2), select first execution receiving antenna ATA a kind of radiation regimes (such as
RA1, RA2 or RA3) and select a kind of radiation regimes (such as RB1, RB2 or RB3) of second execution receiving antenna ATB to obtain
P11 is showed to a corresponding communication, first execution receiving antenna ATA of change is may then continue with and second executes reception
The radiation regimes of antenna ATB, and the combination of being elected property, then available even numbers communication performance, such as can be led to
Letter performance P11, P12, P13 ..., P21, P22, P23 ... etc..In other embodiments, for 4x4MIMO, k=4；For
The digital value of 8x8MIMO, k=8, but k are without being limited thereto.Also, the embodiment for changing the radiation regimes of execution receiving antenna will
It is further illustrated in subsequent figure 2.
Then, step S140 is carried out, each communication is showed, is set in a received signal strength indicator (RSSI)
Between be worth, obtain k execute receiving antenna received signal strength indicator absolute value differences.It is, each communication performance
An absolute value differences are had, this difference is the received signal strength indicator of each used execution receiving antenna
(RSSI) difference, such as work as k=4, the received signal strength indicator of four execution receiving antennas respectively -65dbm, -
65dbm, -66dbm and -64dbm, when taking median is -65dbm, -66dbm causes difference 1, and -64dbm causes another poor
Value 1, therefore absolute value differences are 2.Or work as k=8,8 execution receiving antennas received signal strength indicators be respectively-
55dbm, -54dbm, -56dbm, -57dbm, -55dbm, -53dbm, -57dbm and -55dbm, when take median be -55dbm
When, -53dbm causes difference 2, -54dbm that difference 1, -56dbm is caused to cause difference 1, there are two -57dbm cause difference 2, therefore
Absolute value differences are 6.When it is selected execute receiving antenna received signal strength indicator difference it is smaller, then be more conducive to more
It inputs multi output data transmission (including stability).Then, step S150 is carried out, in the even numbers communication performance, is chosen
Communication with the smallest absolute value differences is showed using the multiple input multiple output communications as optimization.When selection is with the smallest absolutely
Communication performance to value difference value, is generally speaking to indicate selected execution receiving antenna all simultaneously no matter communication environment is fine or not
Best or preferable radiation regimes are chosen, most beneficial for the transmission of multiple-input and multiple-output.Opposite, selected execution receives day
The difference of the received signal strength indicator of line is bigger, may cause more unstable transmission for multiple input multiple output communications
The variation floating of either data transmission rate is likely to larger, is all quite unfavorable for MIMO transmission.This hair
Bright step S150 is that the communication with the smallest absolute value differences has been selected to show using the multiple input multiple output communications as optimization,
It is avoided as much as the unstability or uncertain parameters of transmission process, and is not necessary to do complexity for multiple-input and multiple-output matrix
Data operation processing and can propose prioritization scheme with the mode of more convenient (reduce cost and reduction operation time).Also,
In the transmission process of multiple-input and multiple-output, if transmission environment or transmission range change, can also make step S120,
S130, S140 and S150 are dynamically persistently carried out, and under conditions of avoiding influencing normal transmission state, can dynamically attempt to look for
It is suitable for the more preferably communication performance of situation at that time out.
In addition, more may include a judgment step except above-mentioned steps S110 to step S150: the far end device has m
Transmission antenna, to send wireless signal to the terminal installation, m is the positive integer more than or equal to 2, when terminal installation knows distal end
M transmission antenna of device has changed, and terminal installation changes k execution receiving antenna of the even numbers receiving antenna configuration
Radiation regimes are to re-establish the even numbers communication performance.In other words, terminal installation can be by received data
Whether the antenna condition of monitoring far end device changes that (such as the transmission antenna of script changes into other antennas or script
The state of transmission antenna itself changes), if there is change, terminal installation can execute the radial of receiving antenna with timely replacement
State avoids reception data rate from being drastically decreased to change in response to the state in wireless signal source, and updates whereby preferable
Receiving antenna configuration.
Referring to Fig. 1 and Fig. 2, below with k=2, being selected the execution receiving antenna quantity of reception data is two,
More may include the step S131 and S132 of Fig. 2 in step s 130 using as the example for determining radiation regimes, step S131 with
Step S122 be it is parallel, because of first execution receiving antenna of multiple input multiple output communications and second execution receiving antenna
It is simultaneously in running with data transmission.In step S131, at least one reflection for controlling first execution receiving antenna is single
Member or at least one earth-current control unit.In step S132, at least one reflection of second execution receiving antenna is controlled
Unit or at least one earth-current control unit.
For in step S131 and step S132, the mode for controlling reflector element is to belong to a kind of control mode, and control
Earth-current element is to belong to another control mode.For controlling the mode of reflector element, please refer to and the antenna of Fig. 3 and reflection
Cellular construction, reflector element are, for example, half-wave rope, execute receiving antenna by taking half wavelength dipole antenna as an example, hold in control
In the mode of the reflector element of row receiving antenna, execute receiving antenna 1 reflector element 11 have at least one or two the above are
Preferably, for example, a half-wave rope 111 of Fig. 3 in left side and another half-wave rope 112 is held on right side with generating
The even numbers kind radiation regimes of row receiving antenna 1.The control mode of Fig. 3 embodiment includes: for the half-wave rope in left side
For 111, half-wave rope 111 is connected with diode 111a in selection, and half-wave rope 111 is made to realize half-wavelength reflection function
Energy.Alternatively, selection is not turned on diode 111a and makes to extend circuit 111b using capacitor 111c extension half-wave rope 111
Path makes half-wave rope 111 not generate half-wavelength reflection function.For the half-wave rope 112 on right side, choosing
It selects and half-wave rope 112 is connected with diode 112a, half-wave rope 112 is made to realize half-wavelength reflection function.Alternatively, choosing
It selects and is not turned on diode 112a and makes to extend the path that circuit 112b extends half-wave rope 112 using capacitor 112c, make half
Wavelength reflection device 112 does not generate half-wavelength reflection function.
For controlling the exemplary embodiment of earth-current control unit, referring to figure 4., it is assumed that when the k=2 the case where, ground
Current control unit 211 is to connect ground connection G, first execution receiving antenna 21 and second with earth-current control unit 221
A execution receiving antenna 22 is by taking planar inverted-f antenna (PIFA) as an example, in the earth-current of first execution receiving antenna 21 of control
In the mode of control unit 211, the earth-current control unit 211 of first execution receiving antenna 21 preferably needs at least one
A or more than two components, such as an earth-current portion 211a and another earth-current portion 211b of Fig. 4, it is close using changing
The earth current of first execution receiving antenna 21 is to generate even numbers kind first radiation regimes for executing receiving antenna 21.Fig. 4
The control mode of embodiment includes: for earth-current portion 211a, and earth-current portion 211a is connected to connecing with switch 212a in selection
Ground G, or selection are not turned on switch 212a and are connected to ground capacity 213a between earth-current portion 211a and ground connection G, in Fig. 4
In earth-current portion 211a do not only use ground capacity 213a, also using ground capacity 213b be connected to ground connection G.Furthermore it is right
For earth-current portion 211b, earth-current portion 211b is connected to being grounded G with switch 212b in selection, or selection is not turned on switch
212b and make ground capacity 213b be connected to earth-current portion 211b and ground connection G between.
With continued reference to Fig. 4, for second execution receiving antenna 22, earth-current control unit 221 preferably need to
One or more component less, such as an earth-current portion 221a and another earth-current portion 221b of Fig. 4, utilize change
The even numbers kind radiation regimes of second execution receiving antenna 22 are generated close to the earth current of second execution receiving antenna 22.
Be identical to the control mode of earth-current control unit 211, the control mode of control earth-current control unit 221 include: selection with
Earth-current portion 221a is connected to being grounded G in switch 222a, or selection is not turned on switch 222a and is connected to ground capacity 223a
Between earth-current portion 221a and ground connection G, the earth-current portion 221a in Fig. 4 does not only use ground capacity 223a, using ground connection yet
Capacitor 223b is to be connected to ground connection G.Furthermore earth-current portion 221b is connected to being grounded G with switch 222b in selection, or selection is not led
It opens up and closes 222b and be connected to ground capacity 223b between earth-current portion 221b and ground connection G.However, second execution receives day
The structure that the structure of line 22 executes receiving antenna 21 with first is unnecessary identical, earth-current control unit 221 and earth-current control
Unit 211 processed is also unnecessary identical.Also, above-mentioned switch 212a, 212b, 222a, 222b are for example realized with diode, but unlimited
In this.
Based on above-mentioned method, the present embodiment also provides a kind of terminal installation for multiple input multiple output communications, described
Middle end device is, for example, the laptop that multiple input multiple output communications can be achieved, laptop computer, tablet computer, one electricity
Brain, smart television, small base station or wireless router.Referring to figure 5., the terminal installation of the present embodiment includes N number of receiving antenna
(simply being illustrated in figure with first receiving antenna 31 and n-th receiving antenna 3N), applying unit 4 and control unit 5.It connects
It receives antenna (31 to 3N) and connects wireless chip 6.Applying unit 4 connects wireless chip 6, receives receiving antenna (31 by wireless chip 6
To the received signal strength indicator of 3N) and the reception data rate of multiple input multiple output communications.Applying unit 4 is in N number of receiving antenna
N receiving antenna (31 to 3N) of selection signal strength instruction with higher be as execution receiving antenna in (31 to 3N),
It is all positive integer that middle N, which is greater than n, N and n, and n is greater than 2；Wherein, applying unit 4 arbitrarily selected in n execution receiving antenna k with
Even numbers receiving antenna configuration is constituted, and nothing is received from far end device with one of described even numbers receiving antenna configuration
Line signal, wherein n is greater than k, and k is greater than or equal to 2 positive integer；Wherein, applying unit 4 changes the even numbers receiving antenna
The radiation regimes of k execution receiving antenna of configuration, to establish even numbers communication performance, wherein each communication performance is selected
It is selecting and it is determined that k of radiation regimes execution receiving antenna reception data rate；Wherein each communication is showed, setting
One received signal strength indicator median, applying unit 4 obtain the exhausted of the received signal strength indicator of k execution receiving antenna
To value difference value；Wherein, in the even numbers communication performance, applying unit 4 chooses the communication with the smallest absolute value differences
It shows using the multiple input multiple output communications as optimization.Control unit 5 connects applying unit 4 and N number of receiving antenna (31 to 3N),
It is controlled by applying unit 4 to control the radiation regimes of k in N number of receiving antenna (31 to 3N) execution receiving antenna.N number of reception
Antenna (31 to 3N) can refer to Fig. 3 or Fig. 4 embodiment and relevant explanation, and briefly, control unit 5 is controlled by applying unit
4 to control at least reflector element or an at least earth-current control unit that each executes receiving antenna.
When control unit 5 controls at least reflector element for executing receiving antenna, it is analogous to the embodiment of Fig. 3,
Control unit 5 controls diode to select conducting half-wave rope, or selection to be not turned on diode and make to extend circuit benefit
Extend the path of half-wave rope with capacitor.When at least earth-current that control unit 5 controls execution receiving antenna controls list
When first, it is analogous to the embodiment of Fig. 4,5 control switch of control unit is to select conducting earth-current portion to ground connection, or selection not lead
It opens up pass and is connected to ground capacity between earth-current portion and ground connection.
In addition, to send wireless signal to the terminal installation, m is to be greater than or wait when far end device has m transmission antenna
In 2 positive integer, when terminal installation knows that m transmission antenna of far end device has changed, terminal installation changes the even numbers
The radiation regimes of k execution receiving antenna of receiving antenna configuration are to re-establish the even numbers communication performance.
In conclusion the embodiment of the present invention provides a kind of method of controlling antenna and terminal for multiple input multiple output communications
Device cooperates the radiation regimes of antenna to control, and minimizes using by the received signal strength indicator absolute value differences of each antenna, with
The data rate for further promoting multiple input multiple output communications, has very high industry application value.The radiation regimes of antenna control
It can use reflector or earth current control.
Claims (10)
1. a kind of method of controlling antenna for multiple input multiple output communications, which is characterized in that the method for controlling antenna is used for
Terminal installation with N number of receiving antenna, the method for controlling antenna include:
The terminal installation selects the n reception days of signal strength instruction with higher in N number of receiving antenna
Line is as receiving antenna is executed, and it is all positive integer that wherein N, which is greater than n, N and n, and n is greater than 2；
The terminal installation arbitrarily selects k a to constitute even numbers receiving antenna configuration in the n execution receiving antennas, and
Wireless signal is received from a far end device with one of receiving antenna configuration described in these, wherein n is greater than k, and k is greater than
Or the positive integer equal to 2；
The terminal installation changes the k radiation regimes for executing receiving antenna of these receiving antenna configurations, to build
Vertical even numbers communicates performance, and wherein each described communication performance is selected and it is determined that holds described in k of radiation regimes
The reception data rate of row receiving antenna；
For communicating performance described in each, a received signal strength indicator median is set, the k execution is obtained and receives day
The absolute value differences of the received signal strength indicator of line；And
In these described communications performances, choosing has the communication performance of the smallest absolute value differences using as the more of optimization
Input multi output communication.
2. the method for controlling antenna according to claim 1 for multiple input multiple output communications, which is characterized in that described
Terminal installation changes the described radiation regimes for executing receiving antenna of k of these receiving antenna configurations to establish described in these
Communicating the step of showing includes:
Control each described at least reflector element or an at least earth-current control unit for executing receiving antenna.
3. the method for controlling antenna according to claim 2 for multiple input multiple output communications, which is characterized in that the control
The mode for making each reflector element for executing receiving antenna includes: selection with the reflection of diode current flow half-wavelength
Device, or selection are not turned on the diode and make to extend the path that circuit extends the half-wave rope using capacitor.
4. the method for controlling antenna according to claim 2 for multiple input multiple output communications, which is characterized in that the control
The mode for making each earth-current control unit for executing receiving antenna includes: selection with switch conduction earth-current portion
It is not turned on the switch to ground connection, or selection and is connected to ground capacity between the earth-current portion and the ground connection.
5. the method for controlling antenna according to claim 1 for multiple input multiple output communications, which is characterized in that described remote
End device has m transmission antenna, and to send wireless signal to the terminal installation, m is the positive integer more than or equal to 2, when
The terminal installation knows that the m transmission antennas of the far end device have changed, and the terminal installation changes described in these
The radiation regimes for executing receiving antenna of k of receiving antenna configuration are to re-establish these communication performances.
6. a kind of terminal installation for multiple input multiple output communications characterized by comprising
N number of receiving antenna connects wireless chip；
Applying unit connects the wireless chip, and the reception signal for receiving these receiving antennas by the wireless chip is strong
The reception data rate of degree instruction and multiple input multiple output communications, wherein the applying unit selects in N number of receiving antenna
The n receiving antennas of signal strength instruction with higher are as receiving antenna is executed, and wherein N is greater than n, N and n and is all positive
Integer, n are greater than 2；Wherein, the applying unit arbitrarily selects k to connect to constitute even numbers in the n execution receiving antennas
Antenna configurations are received, and receive wireless signal with one of receiving antenna configuration described in these and from far end device, wherein n is big
2 positive integer is greater than or equal in k, k；Wherein, the applying unit changes described in k of these receiving antenna configurations
The radiation regimes of receiving antenna are executed, to establish even numbers communication performance, wherein each described communication performance is selected
And it is determined that a reception data rates for executing receiving antenna of the k of radiation regimes；Wherein showed for being communicated described in each,
Received signal strength indicator median is set, the applying unit obtains the k received signal strengths for executing receiving antenna
The absolute value differences of instruction；Wherein, in these described communication performances, the applying unit, which is chosen, has the smallest absolute difference
The communication of value is showed using the multiple input multiple output communications as optimization；And
Control unit connects the applying unit and N number of receiving antenna, is controlled by the applying unit to control N number of institute
State the k radiation regimes for executing receiving antenna in receiving antenna.
7. the terminal installation according to claim 6 for multiple input multiple output communications, which is characterized in that the control is single
Member is controlled by the applying unit to control each described at least reflector element for executing receiving antenna or at least ground electricity
Flow control unit.
8. the terminal installation according to claim 7 for multiple input multiple output communications, which is characterized in that the control is single
Member control diode is to select conducting half-wave rope, or selection to be not turned on the diode and make to extend circuit using electricity
Hold the path for extending the half-wave rope.
9. the terminal installation according to claim 7 for multiple input multiple output communications, which is characterized in that the control is single
First control switch is to select conducting earth-current portion to ground connection, or selection to be not turned on the switch and ground capacity is made to be connected to institute
It states between earth-current portion and the ground connection.
10. the terminal installation according to claim 6 for multiple input multiple output communications, which is characterized in that the distal end
Device has m transmission antenna, and to send wireless signal to the terminal installation, m is the positive integer more than or equal to 2, works as institute
It states terminal installation and knows that the m transmission antennas of the far end device have changed, the terminal installation, which changes, to be connect described in these
The k radiation regimes for executing receiving antenna of antenna configurations are received to re-establish these communication performances.
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