CN104243006B - Radio transmitting method and radio transmitting device - Google Patents
Radio transmitting method and radio transmitting device Download PDFInfo
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- CN104243006B CN104243006B CN201410446125.7A CN201410446125A CN104243006B CN 104243006 B CN104243006 B CN 104243006B CN 201410446125 A CN201410446125 A CN 201410446125A CN 104243006 B CN104243006 B CN 104243006B
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Abstract
The embodiment of the present application provides a kind of wireless transmission control method and wireless transmission control device.The described method includes：Determine a transmitting strategy of transmitting equipment, the transmitting strategy includes the time interval that the transmitting equipment carries out theaomni-directional transmission；Reach the time interval apart from the interval of previous theaomni-directional transmission in response to current time, control the emission mode by the transmitting equipment to be adjusted to theaomni-directional transmission pattern.The method and device of the embodiment of the present application is by controlling transmitting equipment to enter theaomni-directional transmission pattern at a certain time interval, ensure that receiving device can be received available for the signal for determining the correct direction of the launch, so as to ensure that what is especially communicated in the case where communicating pair is moved and/or transmission environment changes is normally carried out.
Description
Technical field
The present embodiments relate to field of communication technology, more particularly to a kind of radio transmitting method and radio transmitting device.
Background technology
Smart antenna can adjust inherent parameters in real time according to actual channel conditions, multiple users effectively be followed the trail of, in system
In realize space division multiple access (SDMA).At present in moving communicating field, smart antenna is deployed in one side of communication, and mostly base mostly
Stand side.Traditional base station is relatively fixed, and the wireless signal between base station and terminal device is utilized more by the way of directional transmissions
Wireless channel transmission reciprocity principle, can by estimate receive signal arrival direction (Direction of Arrival,
DOA directional transmissions always), and using this DOA as expected launch party are realized.
Smart antenna equally can be achieved on the mobile apparatus, and benefit includes at least：Lower radiation of the electromagnetic wave to human body, drop
Low equipment power dissipation, improve communications privacy, improve power system capacity.Although realize on the mobile apparatus smart antenna be it is feasible,
But various new technological challenges can be faced.
The content of the invention
In view of this, a purpose of the embodiment of the present application is to provide a kind of antenna scheme of mobile equipment.
To achieve the above object, first aspect according to embodiments of the present invention, there is provided a kind of wireless transmission control method, institute
The method of stating includes：
Determine a transmitting strategy of transmitting equipment, the transmitting strategy includes the transmitting equipment and carries out the one of theaomni-directional transmission
Time interval；
Reach the time interval apart from the interval of previous theaomni-directional transmission in response to current time, control and set the transmitting
Standby emission mode is adjusted to theaomni-directional transmission pattern.
Second aspect according to embodiments of the present invention, there is provided a kind of wireless transmission control device, described device include：
One first determining module, for determining a transmitting strategy of transmitting equipment, the transmitting strategy includes the transmitting
Equipment carries out a time interval of theaomni-directional transmission；
One first control module, between reaching the time apart from the interval of previous theaomni-directional transmission in response to current time
Every, control by it is described transmitting equipment emission mode be adjusted to theaomni-directional transmission pattern.
The method and device of the embodiment of the present application is by controlling transmitting equipment to enter theaomni-directional transmission at a certain time interval
Pattern, ensures that receiving device can be received available for the signal of the correct direction of the launch is determined, so as to ensure that especially logical
What is communicated in the case that letter both sides are moved and/or transmission environment changes is normally carried out.
Brief description of the drawings
Fig. 1 is the flow diagram of the wireless transmission control method of the embodiment of the present application；
Fig. 2 (a)-Fig. 2 (b) is the theaomni-directional transmission time interval schematic diagram in each embodiment of the application；
Fig. 3 is a kind of structure diagram of the first implementation of the wireless transmission control device of embodiment of the application；
Fig. 4 is a kind of structure diagram of second of implementation of the wireless transmission control device of embodiment of the application；
Fig. 5 is a kind of structure diagram of the third implementation of the wireless transmission control device of embodiment of the application；
Fig. 6 is a kind of structure diagram of the 4th kind of implementation of wireless transmission control device of embodiment of the application；
Fig. 7 is a kind of structure diagram of the 5th kind of implementation of wireless transmission control device of embodiment of the application；
Fig. 8 is a kind of structure diagram of the 6th kind of implementation of wireless transmission control device of embodiment of the application；
Fig. 9 is the structure diagram of the wireless transmission control device of the application another kind embodiment.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
Set it will be understood by those skilled in the art that the term such as " first ", " second " in the application is only used for difference difference
Standby, module or parameter etc., neither represent any particular technology implication, also do not indicate that the inevitable logical order between them.
In addition, in each embodiment of the application, " the transmitting equipment " and " receiving device " can be arbitrarily to have wireless communication
The equipment of number transfer function, the equipment that transmitting and the reception of wireless signal are especially carried out by smart antenna, such equipment
It may include traditional base station, radio reception device (AP) and any terminal device (for example, mobile phone, mobile unit, portable setting
It is standby etc.), and " transmitting equipment " or " receiving device " or the two can all have locomotivity." transmitting equipment " and " receiving device " can
For same equipment, may be played the part of in communication process to distinguish the two by " transmitting " and " reception " in each embodiment of the application
Role, not as any restrictions to the two function.Specifically, the communication technology or standard can have used by the communication
It is a variety of, such as, global system for mobile communications (Global System of Mobile Communication, GSM), drill for a long time
Into (Long Term Evolution, LTE), WiFi, bluetooth etc..Such " transmitting equipment " and " receiving device " are oriented
When wireless transmission and reception, if each still relying on the DOA estimations for the signal that other side sends, once a method, apparatus is moved
Or transmission environment changes, then the preferable direction of the launch will be estimated to set with the DOA of the signal received before
Direction of the launch difference it is very big, the signal launched in the direction of the launch of setting possibly can not reach opposite end communication equipment, or very
To can not receive at all before can be for reference reception signal also can not just carry out DOA estimations, so as to cause communication disruption.
In realization, the smart antenna described in each embodiment of the application can have identical polarization characteristic, respectively to same
Property and the identical bay of gain, arrange, the aerial array of composition, at least two antenna of aerial array in a certain way
Array element.Can also be reconfigurable antenna battle array, each bay in array can pass through MEMS (Micro-
Electro-Mechanical System, MEMS) reconstruct its polarization characteristic, gain and other relevant parameters.
The method and device of each embodiment of the application changes for above-mentioned possible mobile context and/or transmission environment
Scene, there is provided a kind of new wireless transmission scheme.As shown in Figure 1, the wireless transmission control method bag of the embodiment of the present application
Include：
S120. the transmitting strategy of transmitting equipment is determined, the transmitting strategy includes the transmitting equipment and carries out theaomni-directional transmission
Time interval.
S140. the time interval is reached apart from the interval of previous theaomni-directional transmission in response to current time, control is by described in
The emission mode of transmitting equipment is adjusted to theaomni-directional transmission pattern.
No matter launch equipment and receiving device how to move and/or what kind of change, theaomni-directional transmission mould occur for transmission environment
Formula is a kind of transmission mode that can ensure receiving device and receive the signal of transmitting equipment transmitting, and the method for the present embodiment passes through
When formulating the transmitting strategy of transmitting equipment, clearly launch equipment every certain time interval, into theaomni-directional transmission pattern, from
And ensure that receiving device can necessarily receive the wireless signal of transmitting equipment transmitting every certain time interval, and then can
Carried out according to the received wireless signal such as DOA estimations and/or channel estimation, so that it is determined that receiving device is next
Launch the direction of signal at the time of as transmitting equipment, to ensure that the follow-up of communication carries out.
Assuming that the time interval that the transmitting strategy of transmitting equipment includes launching equipment progress theaomni-directional transmission is Δ T, that is,
The emission mode of the transmitting equipment is adjusted to theaomni-directional transmission pattern every time Δ T controls.For example, in current time slots t1,
By calculating current time slots with transmitting equipment the last time at the interval (t1-t0) of the time slot t0 of theaomni-directional transmission Mode Launch signal
Determine whether transmitting equipment current time should carry out theaomni-directional transmission, if (t1-t0) equals or exceeds Δ T, equipment will be launched
At least transmitting antenna is adjusted to theaomni-directional transmission pattern.
Wherein, the time interval for launching equipment progress theaomni-directional transmission can be the immutable ginseng arbitrarily set by transmitting equipment
Number, receiving device can be known or know the time interval；Or it is a parameter arranged in advance by communicating pair；Can also be such as
Parameter will be described below, according to the reasonable dynamic change of transmission environment (channel conditions).
To sum up, the method for the embodiment of the present application is by controlling transmitting equipment to enter theaomni-directional transmission mould at a certain time interval
Formula, ensures that receiving device can be received available for the signal for determining the correct direction of the launch, is especially communicating so as to ensure that
What is communicated in the case that both sides are moved and/or transmission environment changes is normally carried out.
Wave beam forming is a kind of important technology in smart antenna, is according to system performance requirements, calculates transmitting signal
Particular combination or the process for distributing (weight vector), namely it is more excellent or even optimal to determine according to the transmission environment of communicating pair
The direction of the launch of wave beam.In order to ensure to remain to when transmission environment changes accurately to determine the transmitting of transmitting equipment transmitting antenna
It is sent to, compared with DOA estimates, determines that wave beam forming parameter is more highly preferred to according to the result of channel estimation.For this reason, the transmitting plan
The signal type that signal is sent with the theaomni-directional transmission pattern is slightly further included, for example, specify that in the transmitting strategy with described
Theaomni-directional transmission pattern sends reference signal, and the reference signal is used to be demodulated for receiving device and/or the letter of channel estimation
Number, for example, in LTE standard (www.3gpp.org) demodulated reference signal (Demodulation Reference Signal,
DMRS), at least one of the SRS signal for channel quality measurement, other any possible reference signals.It is described to send ginseng
Examining signal includes only sending reference signal and sends the possibility for including reference signal and other signals.In a kind of possible realization
In mode, the reference signal also can refer to payload (Payload) signal, in this case, can be according in the prior art
The mode of any suitable blind estimate carries out channel estimation.
In addition, in order to embody advantage of the smart antenna in directional transmissions pattern, for example, farther communication distance, higher
The availability of frequency spectrum etc., the method for the embodiment of the present application carried out outside theaomni-directional transmission with predetermined time interval, other moment are preferred
Still with directional transmissions Mode Launch wireless signal waiting for transmission.Correspondingly, the method for the embodiment of the present application further includes：
S160. the time interval is not up to apart from the interval of previous theaomni-directional transmission in response to current time, controlled institute
The emission mode for stating transmitting equipment is adjusted to directional transmissions pattern.For example, in current time slots t1, calculate current time slots and set with transmitting
The standby the last time slot t0 in theaomni-directional transmission Mode Launch signal at intervals of (t1-t0), if (t1-t0) not less than Δ T,
At least transmitting antenna for launching equipment is adjusted to directional transmissions pattern by control.Directional transmissions pattern issues jet device transmitting antenna
The direction of the launch can for example be estimated according to the DOA of nearest reception signal, or be estimated according to the channel that nearest reception signal obtains
The wave beam forming parameter calculated determines the direction of the launch.
In communication process, the role for launching equipment and receiving device is that meeting is changed, and transmitting equipment transmitting is wireless
After signal, receiving device is become during the feedback of receiving device is waited, vice versa.Correspondingly, the application is real
The method for applying example further includes：
S110. according to the channel estimation for receiving signal and carrying out current time of the transmitting equipment.
Channel estimation is carried out as the more ripe technology in this area according to signal is received, herein not as to the embodiment of the present application
Limitation, also do not repeat.
S130. according at least to the channel estimation at the current time, the wave beam forming parameter for launching equipment is determined.
Obtain, according to after channel estimation results, wave beam forming ginseng being calculated according to certain algorithm in step s 110
Number, the algorithm such as beam scanning algorithm (Grid Of Beam, GOB) or feature vector method (Eigen based
Beamforming, EBB) etc., algorithm calculating in this way can obtain a beamforming weighting vector w, can be adjusted according to w
Launch each array element of device antenna, alternatively, in addition to the w at current time, one or more moment adds before can also considering
Weight vector W (for example, the average value for the weighted volumes that multiple moment calculate), to improve the accuracy of wave beam forming parameter.For example, press
The beamforming weighting vector W of current time adjustment transmitting each array element of device antenna is determined according to certain weightbf=a*W+b*w,
Wherein, a, b represent the weight of W and w respectively, can rule of thumb value.
Further, since the change of transmission environment is probably non-uniform, with changeless or inappropriate time interval
Theaomni-directional transmission is carried out, is likely to result in the waste of system resource, or even cause the communication disruption of long period.For example, such as Fig. 2
(a) shown in, longer Fixed Time Interval Δ T1 is set, that is, transmitting equipment performs omnidirectional's hair every time Δ T1
Penetrate.In time t0, transmitting equipment is with theaomni-directional transmission Mode Launch reference signal, and receiving device is according to the reference signal received
Wave beam forming is carried out, to transmitting equipment return signal, hereafter both sides carry out wireless using the transmitting antenna of orientation on this basis
Signal transmission.But, it is assumed that channel variation is violent, and according to the direction of the launch before and direction is received in time t1 communicating pair
Signal through that can not to be respectively received other side's transmission, communication disruption, until transmitting equipment carries out omnidirectional again at the t2 moment
Both sides could recover to communicate after transmitting, and since the t1 moment, distance t2 is separated by longer time, that is, communication will interrupt compared with
For a long time, in this case, time interval Δ T1 should suitably be shortened.On the contrary, time interval Δ T1 should be appropriately extended.For
The wasting of resources and the harmful effect caused by communicating pair caused by avoiding such a situation, in a kind of possible implementation
In, the transmitting strategy further includes the default channel estimation variable quantity threshold range for adjusting the transmitting strategy,
That is, setting one represent transmission environment change severe degree channel estimation variable quantity threshold range, according to every time receive come
From after the signal of receiving device, the difference between the channel estimation of obtained channel estimation and previous moment in step S110 is determined
It is different, and then determine the intensity of variation of transmission environment, the bigger intensity of variation bigger (violent) for representing transmission environment of difference is, it is necessary to contract
The short time interval；The intensity of variation of the smaller expression transmission environment of difference is smaller (gentle), can suitably increase the time
The size at interval.The variable quantity threshold range can rule of thumb be set.
The variable quantity threshold range can be the scope that should adjust the time interval, correspondingly, in a kind of possible realization
In mode, the method for the embodiment of the present application further includes：
S150. it is in response to channel estimation variable quantity in the threshold range, adjusts the time interval.
The variable quantity threshold range can also be the scope for keeping the time interval constant.Correspondingly, a kind of possible
In implementation, the method for the embodiment of the present application further includes：
S150 ' are in outside the threshold range in response to channel estimation variable quantity, adjust the time interval.
In addition, the method for the embodiment of the present application may also include：
S180. the transmitting strategy is sent.It may be in response to the originally determined transmitting strategy and perform the transmission, can also ring
The transmission should be performed in the adjustment of each transmitting strategy.And equipment can be launched and/or mode that receiving device can receive
Perform the transmission.For example, in a kind of possible implementation, the method for the embodiment of the present application is by the dress independently of transmitting equipment
Put execution, it is determined that after transmitting strategy, transmitting strategy transmission can be informed and give transmitting equipment.In alternatively possible realization
In mode, the time of party of one's own can be determined according to the time interval of the theaomni-directional transmission of other side by launching equipment and receiving device
Interval, with the time each into theaomni-directional transmission pattern staggering as far as possible as shown in Fig. 2 (b), in this way, further shorten
The time of possible communication disruption, so as to make full use of resource and the possible situation for avoiding the occurrence of communication disruption of bigger.At this time,
The transmitting strategy can be sent to receiving device in S180.
To sum up, the method for the embodiment of the present application can be sent out by controlling transmitting equipment to enter omnidirectional at a certain time interval
Emission mode, ensures being normally carried out for communication；Can also according to the change of transmission environment and communicating pair it is respective transmitting strategy come
Dynamic adjusts the time interval, can make full use of system resource, and the possible situation for avoiding the occurrence of communication disruption of bigger.
It will be understood by those skilled in the art that in the above method of the application embodiment, the sequence number of each step
Size is not meant to the priority of execution sequence, and the execution sequence of each step should be determined with its function and internal logic, without answering
Any restriction is formed to the implementation process of the application embodiment.
In addition, the embodiment of the present application additionally provides a kind of computer-readable medium, including following grasp is carried out when executed
The computer-readable instruction of work：Perform the operation of each step of the method in above-mentioned Fig. 1 illustrated embodiments.
The embodiment of the present application additionally provides a kind of device for performing above-mentioned wireless transmission control method, which can be independent
In transmitting equipment and/or any device of receiving device, or belong to any device of transmitting equipment/receiving device, or should
Device is transmitting equipment in itself.According to the needs of the above-mentioned different executive roles of the device, except each composition portion described below
Exceptionally, described device further includes the communication module that can as needed realize and communicate with arbitrary equipment outside device.As shown in figure 3,
The wireless transmission control device 300 of the embodiment of the present application includes：
First determining module 320, for determining the transmitting strategy of transmitting equipment, the transmitting strategy includes the transmitting and sets
The standby time interval for carrying out theaomni-directional transmission.
First control module 340, for reaching the time apart from the interval of previous theaomni-directional transmission in response to current time
Interval, controls the emission mode by the transmitting equipment to be adjusted to theaomni-directional transmission pattern.
No matter launch equipment and receiving device how to move and/or what kind of change, theaomni-directional transmission mould occur for transmission environment
Formula is a kind of transmission mode that can ensure receiving device and receive the signal of transmitting equipment transmitting, and the device of the present embodiment passes through
When formulating the transmitting strategy of transmitting equipment, clearly launch equipment every certain time interval, into theaomni-directional transmission pattern, from
And ensure that receiving device can necessarily receive the wireless signal of transmitting equipment transmitting every certain time interval, and then can
Carried out according to the received wireless signal such as DOA estimations and/or channel estimation, so that it is determined that receiving device is next
Launch the direction of signal at the time of as transmitting equipment, to ensure that the follow-up of communication carries out.
Assuming that the time interval that the transmitting strategy of transmitting equipment includes launching equipment progress theaomni-directional transmission is Δ T, that is,
The emission mode of the transmitting equipment is adjusted to theaomni-directional transmission pattern every time Δ T controls.For example, in current time slots t1,
By calculating current time slots with transmitting equipment the last time at the interval (t1-t0) of the time slot t0 of theaomni-directional transmission Mode Launch signal
Determine whether transmitting equipment current time should carry out theaomni-directional transmission, if (t1-t0) equals or exceeds Δ T, equipment will be launched
At least transmitting antenna is adjusted to theaomni-directional transmission pattern.
Wherein, the time interval for launching equipment progress theaomni-directional transmission can be the immutable ginseng arbitrarily set by transmitting equipment
Number, receiving device can be known or know the time interval；Or it is a parameter arranged in advance by communicating pair；Can also be such as
Parameter will be described below, according to the reasonable dynamic change of transmission environment (channel conditions).
To sum up, the device of the embodiment of the present application is by controlling transmitting equipment to enter theaomni-directional transmission mould at a certain time interval
Formula, ensures that receiving device can be received available for the signal for determining the correct direction of the launch, is especially communicating so as to ensure that
What is communicated in the case that both sides are moved and/or transmission environment changes is normally carried out.
Wave beam forming is a kind of important technology in smart antenna, is according to system performance requirements, calculates transmitting signal
Particular combination or the process for distributing (weight vector), namely it is more excellent or even optimal to determine according to the transmission environment of communicating pair
The direction of the launch of wave beam.In order to ensure to remain to when transmission environment changes accurately to determine the transmitting of transmitting equipment transmitting antenna
It is sent to, compared with DOA estimates, determines that wave beam forming parameter is more highly preferred to according to the result of channel estimation.For this reason, the transmitting plan
The signal type that signal is sent with the theaomni-directional transmission pattern is slightly further included, for example, specify that in the transmitting strategy with described
Theaomni-directional transmission pattern sends reference signal, and the reference signal is used to be demodulated for receiving device and/or the letter of channel estimation
Number, for example, in LTE standard (www.3gpp.org) demodulated reference signal (Demodulation Reference Signal,
DMRS), at least one of the SRS signal for channel quality measurement, other any possible reference signals.It is described to send ginseng
Examining signal includes only sending reference signal and sends the possibility for including reference signal and other signals.In a kind of possible realization
In mode, the reference signal also can refer to payload (Payload) signal, in this case, can be according in the prior art
The mode of any suitable blind estimate carries out channel estimation.
In addition, in order to embody advantage of the smart antenna in directional transmissions pattern, for example, farther communication distance, higher
The availability of frequency spectrum etc., the device of the embodiment of the present application carried out outside theaomni-directional transmission with predetermined time interval, other moment are preferred
Still with directional transmissions Mode Launch wireless signal waiting for transmission.Correspondingly, as shown in figure 4, the device 300 of the embodiment of the present application is gone back
Including：
Second control module 360, is not up between the time in response to current time apart from the interval of previous theaomni-directional transmission
Every, control by it is described transmitting equipment emission mode be adjusted to directional transmissions pattern.For example, in current time slots t1, calculate current
Time slot with transmitting equipment the last time theaomni-directional transmission Mode Launch signal time slot t0 at intervals of (t1-t0), if (t1-t0)
Not less than Δ T, then at least transmitting antenna for launching equipment is adjusted to directional transmissions pattern by control.Launch under directional transmissions pattern
The direction of the launch of equipment transmitting antenna can for example estimate according to the DOA of nearest reception signal, or according to nearest reception signal
The wave beam forming parameter of obtained channel estimation calculation determines the direction of the launch.
In communication process, the role for launching equipment and receiving device is that meeting is changed, and transmitting equipment transmitting is wireless
After signal, receiving device is become during the feedback of receiving device is waited, vice versa.Correspondingly, such as Fig. 5 institutes
Show, the device 300 of the embodiment of the present application further includes：
Signal estimation module 310, for the channel estimation for receiving signal and carrying out current time according to the transmitting equipment.
Signal estimation module 310 carries out channel estimation as the more ripe technology in this area according to signal is received, and does not make herein
For the limitation to the embodiment of the present application, also do not repeat.
Second determining module 330, for the channel estimation according at least to the current time, determines the transmitting equipment
Wave beam forming parameter.
Signal estimation module 310 has been obtained according to after channel estimation results, and the second determining module 330 can be according to certain calculation
Method calculates wave beam forming parameter, the algorithm such as beam scanning algorithm (Grid Of Beam, GOB) or feature vector method
(Eigen based Beamforming, EBB) etc., algorithm calculating in this way can obtain a beamforming weighting vector
W, can adjust transmitting each array element of device antenna according to w, alternatively, in addition to the w at current time, can also consider previous or
The weighing vector W (for example, the average value for the weighted volumes that multiple moment calculate) at multiple moment, to improve the standard of wave beam forming parameter
True property.For example, the beamforming weighting vector of current time adjustment transmitting each array element of device antenna is determined according to certain weight
Wbf=a*W+b*w, wherein, a, b represent the weight of W and w respectively, can rule of thumb value.
Further, since the change of transmission environment is probably non-uniform, with changeless or inappropriate time interval
Theaomni-directional transmission is carried out, is likely to result in the waste of system resource, or even cause the communication disruption of long period.For example, such as Fig. 2
(a) shown in, longer Fixed Time Interval Δ T1 is set, that is, transmitting equipment performs omnidirectional's hair every time Δ T1
Penetrate.In time t0, transmitting equipment is with theaomni-directional transmission Mode Launch reference signal, and receiving device is according to the reference signal received
Wave beam forming is carried out, to transmitting equipment return signal, hereafter both sides carry out wireless using the transmitting antenna of orientation on this basis
Signal transmission.But, it is assumed that channel variation is violent, and according to the direction of the launch before and direction is received in time t1 communicating pair
Signal through that can not to be respectively received other side's transmission, communication disruption, until transmitting equipment carries out omnidirectional again at the t2 moment
Both sides could recover to communicate after transmitting, and since the t1 moment, distance t2 is separated by longer time, that is, communication will interrupt compared with
For a long time, in this case, time interval Δ T1 should suitably be shortened.On the contrary, time interval Δ T1 should be appropriately extended.For
The wasting of resources and the harmful effect caused by communicating pair caused by avoiding such a situation, in a kind of possible implementation
In, the transmitting strategy further includes the default channel estimation variable quantity threshold range for adjusting the transmitting strategy,
That is, setting one represent transmission environment change severe degree channel estimation variable quantity threshold range, according to every time receive come
From after the signal of receiving device, what the channel estimation that is obtained according to current time channel estimation module 310 was obtained with previous moment
Difference between channel estimation, determines the intensity of variation of transmission environment, and the intensity of variation of the bigger expression transmission environment of difference is bigger
(violent) is, it is necessary to shorten the time interval；The intensity of variation of the smaller expression transmission environment of difference is smaller (gentle), can be appropriate
Increase the size of the time interval.The variable quantity threshold range can rule of thumb be set.
The variable quantity threshold range can be the scope that should adjust the time interval, correspondingly, as shown in fig. 6, in one kind
In possible implementation, the device 300 of the embodiment of the present application further includes：
Module 350 is adjusted, for being in response to channel estimation variable quantity in the threshold range, between adjusting the time
Every.
The variable quantity threshold range can also be the scope for keeping the time interval constant.Correspondingly, as shown in fig. 7,
In a kind of possible implementation, the device 300 of the embodiment of the present application further includes：
Module 350 ' is adjusted, for being in response to channel estimation variable quantity outside the threshold range, adjusts the time
Interval.
In addition, as shown in figure 8, the device 300 of the embodiment of the present application may also include：
Sending module 380, for sending the transmitting strategy.Sending module 380 may be in response to the originally determined transmitting
Strategy and perform the transmission, may also be responsive to perform the transmission in the adjustment of each transmitting strategy.And sending module 380 can be launched
The mode that equipment and/or receiving device can receive performs the transmission.For example, in a kind of possible implementation, this Shen
Please the device of embodiment be device independently of transmitting equipment, accordingly, it is determined that after transmitting strategy, sending module can be passed through
380 by the transmitting strategy send inform equipment to transmitting.In alternatively possible implementation, launch equipment and receiving device
The time interval of party of one's own can be determined according to the time interval of the theaomni-directional transmission of other side, with to the greatest extent may be used as shown in Fig. 2 (b)
Time each into theaomni-directional transmission pattern can be staggered (length of both sides' time interval may be the same or different), in this way, into
One step shortens the time of possible communication disruption, so as to make full use of resource and the possible communication disruption that avoids the occurrence of of bigger
Situation.At this time, sending module 380 can send the transmitting strategy to receiving device.
To sum up, the device of the embodiment of the present application can be sent out by controlling transmitting equipment to enter omnidirectional at a certain time interval
Emission mode, ensures being normally carried out for communication；Can also according to the change of transmission environment and communicating pair it is respective transmitting strategy come
Dynamic adjusts the time interval, can make full use of system resource, and the possible situation for avoiding the occurrence of communication disruption of bigger.
It should be noted that the device of the embodiment of the present application is when launching equipment/receiving device itself, it further includes crowd
The well known each part being wirelessly transferred by smart antenna, such as：ADC/DAC modules, smart antenna control and
Baseband processing module etc., alternatively, above-mentioned partial function module can be integrated in and well-known wirelessly be passed by smart antenna
In any portion of defeated each part.
Fig. 9 is a kind of structure diagram of wireless transmission control device 900 provided by the embodiments of the present application, and the application is specific
Specific implementation of the embodiment not to wireless transmission control device 900 limits.As shown in figure 9, the wireless transmission control device
900 can include：
Processor (processor) 910, communication interface (Communications Interface) 920, memory
(memory) 930 and communication bus 940.Wherein：
Processor 910, communication interface 920 and memory 1530 complete mutual communication by communication bus 940.
Communication interface 920, for communicating with the network element of such as client etc..
Processor 910, for executive program 932, can specifically realize shooting control dress in the device embodiment of above-mentioned Fig. 3
The correlation function put.
Specifically, program 932 can include program code, and said program code includes computer-managed instruction.
Processor 910 is probably a central processor CPU, or specific integrated circuit ASIC (Application
Specific Integrated Circuit), or be arranged to implement the embodiment of the present application one or more integrate electricity
Road.Program 932 specifically can be used for so that the wireless transmission control device 900 performs following steps：
Determine a transmitting strategy of transmitting equipment, the transmitting strategy includes the transmitting equipment and carries out the one of theaomni-directional transmission
Time interval；
Reach the time interval apart from the interval of previous theaomni-directional transmission in response to current time, control and set the transmitting
Standby emission mode is adjusted to theaomni-directional transmission pattern.
The specific implementation of each step may refer to corresponding in corresponding steps and the unit in above-described embodiment in program 932
Description, this will not be repeated here.It is apparent to those skilled in the art that for convenience and simplicity of description, it is above-mentioned to retouch
The equipment and the specific work process of module stated, may be referred to the corresponding process description in preceding method embodiment, herein no longer
Repeat.
It is apparent to those skilled in the art that for convenience and simplicity of description, the equipment of foregoing description
With the specific work process of module, the corresponding description in aforementioned means embodiment is may be referred to, details are not described herein.
Although subject matter described herein is held in the execution on the computer systems of binding operation system and application program
There is provided in capable general context, but it will be appreciated by the appropriately skilled person that may also be combined with other kinds of program module
To perform other realizations.In general, program module include perform particular task or realize particular abstract data type routine,
Program, component, data structure and other kinds of structure.It will be understood by those skilled in the art that subject matter described herein can
To be put into practice using other computer system configurations, including portable equipment, multicomputer system, based on microprocessor or can compile
Journey consumption electronic product, minicom, mainframe computer etc., it is possible to use task by communication network by being connected wherein
In the distributed computing environment that remote processing devices perform.In a distributed computing environment, program module can be located locally and far
Journey memory storage device both in.
Those of ordinary skill in the art may realize that each exemplary list described with reference to the embodiments described herein
Member and method and step, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
Performed with hardware or software mode, application-specific and design constraint depending on technical solution.Professional technician
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
Scope of the present application.
If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, the technical solution of the application is substantially in other words
The part to contribute to original technology or the part of the technical solution can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server, or network equipment etc.) perform each embodiment the method for the application all or part of step.
And foregoing computer read/write memory medium include with storage as computer-readable instruction, data structure, program module or its
Any mode or technology of the information such as his data are come the physics volatile and non-volatile, removable and can not be situated between because of east realized
Matter.Computer read/write memory medium specifically includes, but is not limited to, USB flash disk, mobile hard disk, read-only storage (ROM, Read-
Only Memory), random access memory (RAM, Random Access Memory), Erasable Programmable Read Only Memory EPROM
(EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), flash memory or other solid-state memory technologies, CD-ROM, numeral are more
Functional disc (DVD), HD-DVD, blue light (Blue-Ray) or other light storage devices, tape, disk storage or other magnetic storages
Equipment can be used for any other medium that stores information needed and can be accessed by computer.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, in relation to the common of technical field
Technical staff, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all
Equivalent technical solution falls within scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (12)
- A kind of 1. wireless transmission control method, it is characterised in that the described method includes：Determine a transmitting strategy of transmitting equipment, the transmitting strategy includes the time that the transmitting equipment carries out theaomni-directional transmission Interval；Reach the time interval apart from the interval of previous theaomni-directional transmission in response to current time, control the transmitting equipment Emission mode is adjusted to theaomni-directional transmission pattern；According to the one of the transmitting equipment channel estimation for receiving signal progress current time；According at least to the channel estimation at the current time, the wave beam forming parameter for launching equipment is determined；The transmitting strategy further includes the channel estimation variable quantity threshold range for adjusting the transmitting strategy.
- 2. according to the method described in claim 1, it is characterized in that, the transmitting strategy is further included with the theaomni-directional transmission pattern Send the signal type of signal.
- 3. according to the method described in claim 2, it is characterized in that, the transmitting strategy is further included with the theaomni-directional transmission pattern A reference signal is sent, the reference signal is used to be demodulated for receiving device and/or the signal of channel estimation.
- 4. according to the method in any one of claims 1 to 3, it is characterised in that the method further includes：The time interval is not up to apart from the interval of previous theaomni-directional transmission in response to current time, is controlled the transmitting equipment Emission mode be adjusted to directional transmissions pattern.
- 5. according to the method described in claim 1, it is characterized in that, the method further includes：It is in response to channel estimation variable quantity in the threshold range, adjusts the time interval.
- 6. according to the method described in claim 1, it is characterized in that, the method further includes：It is in response to channel estimation variable quantity outside the threshold range, adjusts the time interval.
- 7. according to the method described in claim 6, it is characterized in that, the method further includes：Send the transmitting strategy.
- 8. a kind of wireless transmission control device, it is characterised in that described device includes：One first determining module, for determining a transmitting strategy of transmitting equipment, the transmitting strategy includes the transmitting equipment Carry out a time interval of theaomni-directional transmission；One first control module, for reaching the time interval apart from the interval of previous theaomni-directional transmission in response to current time, The emission mode of the transmitting equipment is adjusted to theaomni-directional transmission pattern by control；One channel estimation module, the channel estimation at signal progress current time is received for one according to the transmitting equipment；One second determining module, for the channel estimation according at least to the current time, determines the ripple for launching equipment Beam figuration parameter；The transmitting strategy further includes the channel estimation variable quantity threshold range for adjusting the transmitting strategy.
- 9. device according to claim 8, it is characterised in that described device further includes：The time interval is not up to apart from the interval of previous theaomni-directional transmission in response to current time, is controlled the transmitting equipment Emission mode be adjusted to directional transmissions pattern.
- 10. the device stated according to claim 8, it is characterised in that described device further includes：One adjustment module, for being in response to channel estimation variable quantity in the threshold range, adjusts the time interval.
- 11. device according to claim 8, it is characterised in that described device further includes：One adjustment module, for being in response to channel estimation variable quantity outside the threshold range, adjusts the time interval.
- 12. according to the devices described in claim 11, it is characterised in that described device further includes：One sending module, for sending the transmitting strategy.
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| CN201410446125.7A CN104243006B (en) | 2014-09-03 | 2014-09-03 | Radio transmitting method and radio transmitting device |
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| CN201410446125.7A CN104243006B (en) | 2014-09-03 | 2014-09-03 | Radio transmitting method and radio transmitting device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101536355A (en) * | 2006-10-10 | 2009-09-16 | 英特尔公司 | Adaptive multiple-antenna systems with onmi-directional and sector-directional antenna modes |
| CN102308605A (en) * | 2009-02-06 | 2012-01-04 | 高通股份有限公司 | Communications methods and apparatus for supporting communications with peers using multiple antenna patterns |
| CN102386954A (en) * | 2010-09-03 | 2012-03-21 | 华为技术有限公司 | Data transmission method, access point equipment and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080218414A1 (en) * | 2004-06-30 | 2008-09-11 | Bo Hagerman | Antenna Beam Shape Optimization |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101536355A (en) * | 2006-10-10 | 2009-09-16 | 英特尔公司 | Adaptive multiple-antenna systems with onmi-directional and sector-directional antenna modes |
| CN102308605A (en) * | 2009-02-06 | 2012-01-04 | 高通股份有限公司 | Communications methods and apparatus for supporting communications with peers using multiple antenna patterns |
| CN102386954A (en) * | 2010-09-03 | 2012-03-21 | 华为技术有限公司 | Data transmission method, access point equipment and terminal |
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