CN105120497B - A kind of wireless communications method and system - Google Patents
A kind of wireless communications method and system Download PDFInfo
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- CN105120497B CN105120497B CN201510435458.4A CN201510435458A CN105120497B CN 105120497 B CN105120497 B CN 105120497B CN 201510435458 A CN201510435458 A CN 201510435458A CN 105120497 B CN105120497 B CN 105120497B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 245
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- 238000005516 engineering process Methods 0.000 description 4
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
Abstract
A kind of wireless communications method of present invention offer and system.Wireless communications method includes：One control channel frequency of setting and N number of transmission channel frequency, N number of transmission channel frequency is classified from low to high by frequency is named as the first transmission channel frequency to N transmission channel frequencies；It is connect with the control channel of other side's wireless communication terminal with the foundation of control channel frequency；It is connect with the transmission channel of other side's wireless communication terminal with the foundation of N transmission channel frequencies；Adjust the frequency of established transmission channel：Detect the received signal strength indicator value of established transmission channel, when received signal strength indicator value is less than setting value, counterparting communications terminal is sent by transmission channel frequency shift into the request of the transmission channel frequency of level-one lower than current transmission channel frequency by control channel, and transmission channel connection is established with the transmission channel frequency of low level-one；Repeat the frequency of the established transmission channel of adjustment.This programme can improve wireless communication ability and efficiency.
Description
Technical field
The present invention relates to a kind of communication technologys, more particularly to a kind of wireless communications method and system.
Background technology
With the development of social economy and technology, the application of wireless communication technique is more and more extensive.In the intelligence of numerous buildings
In energyization, wireless communication technique usually can be all used, but includes the 2.4G frequency ranges that 802.11b/g/n is used, 802.11a is used
The frequency ranges such as 5G frequency ranges meet wall after can all generate larger decaying, cause effective transmission range closer.Radio wave encounters barrier
Hinder object to have reflection, transmits, diffraction.Transmission loss is even more serious in reinforced concrete wall.And the process of urbanization causes pair
The utilization rate of the underground space rises, including underground parking, market place builet below the ground, and the wireless coverage in these places is also extremely important, especially
When it is intended to make underground intelligent parking lot or other underground intelligent buildings.But general underground parking wall is relatively more, wirelessly
Signal thick signal decaying through walls is very serious, causes wireless signal transmission distance very close.
In consideration of it, how to find a kind of the method for wireless communication ability being effectively improved just at ability in the place for having wall
Field technique personnel's urgent problem to be solved.
Invention content
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of wireless communications method and it is
System, it is poor in the local wireless communication ability for having wall for solving the problems, such as to wirelessly communicate in the prior art.
In order to achieve the above objects and other related objects, the present invention provides a kind of wireless communications method, the wireless communication
Method includes：One control channel frequency of setting and N number of transmission channel frequency, N are the natural number more than 1, N number of transmission letter
Road frequency is classified from low to high by frequency is named as the first transmission channel frequency to N transmission channel frequencies；Believed with the control
Road frequency foundation is connect with the control channel of other side's wireless communication terminal；With the N transmission channel frequencies establish with it is described right
The transmission channel of square wireless communication terminal connects；Adjust the frequency of established transmission channel：The established transmission channel of detection
Received signal strength indicator value, when the received signal strength indicator value be less than setting value when, sent out by the control channel
Send transmission channel frequency of the counterparting communications terminal by transmission channel frequency shift at level-one lower than current transmission channel frequency
Request, with the transmission channel frequency of low level-one establish transmission channel connection；The frequency of the established transmission channel of adjustment is repeated,
It is first until the received signal strength indicator value of current transmission channel frequency is less than preset value or current transmission channel frequency
Transmission channel frequency.
Optionally, the wireless communications method further includes：Receiving counterparting communications terminal will be by transmission channel frequency shift
At the transmission channel frequency of level-one lower than current transmission channel frequency request when, by it is described request adjustment send transmission channel
Frequency.
Optionally, the control channel frequency and the transmission channel frequency are in the frequency range of the same setting.
Optionally, N number of transmission channel frequency is by any two the adjacent transmission channel frequencies of frequency from small to large
Difference on the frequency is identical.
Optionally, the setting value can be adjusted.
Optionally, the control channel be wirelessly communicate both sides terminal established respectively by control channel frequency it is two-way
Control channel.
The present invention also provides a kind of wireless communication system, the wireless communication system includes：Channel frequency setting module is used
In one control channel frequency of setting and N number of transmission channel frequency, N is the natural number more than 1, N number of transmission channel frequency
It is classified from low to high by frequency and is named as the first transmission channel frequency to N transmission channel frequencies；Control channel establishes module, with
Channel frequency setting module is connected, and connects with the control channel of other side's wireless communication terminal for being established with the control channel frequency
It connects；Transmission channel establishes module, is connected with channel frequency setting module, for N transmission channel frequencies foundation and institute
State the transmission channel connection of other side's wireless communication terminal；Transmission channel adjusts module, with channel frequency setting module, control channel
It establishes module and transmission channel establishes module and is connected, the frequency for adjusting established transmission channel：What detection was established
The received signal strength indicator value of transmission channel passes through the control when the received signal strength indicator value is less than setting value
Channel processed sends transmission of the counterparting communications terminal by transmission channel frequency shift at level-one lower than current transmission channel frequency
The request of channel frequency establishes transmission channel connection with the transmission channel frequency of low level-one；It repeats to adjust established transmission letter
The frequency in road, until the received signal strength indicator value of current transmission channel frequency is more than preset value or current transmission channel frequency
Rate is the first transmission channel frequency.
Optionally, the transmission channel adjustment module is additionally operable to：Receiving counterparting communications terminal will be by transmission channel frequency
When being changed to the request of transmission channel frequency of level-one lower than current transmission channel frequency, by the transmission of the request adjustment transmission
Channel frequency.
Optionally, the control channel frequency and the transmission channel frequency are in the frequency range of the same setting.
Optionally, N number of transmission channel frequency is by any two the adjacent transmission channel frequencies of frequency from small to large
Difference on the frequency is identical.
Optionally, the setting value can be adjusted.
Optionally, the control channel be wirelessly communicate both sides terminal established respectively by control channel frequency it is two-way
Control channel.
As described above, a kind of wireless communications method and system of the present invention, have the advantages that：It can dynamically adjust
The channel frequency of whole transmission channel, local even if more than barrier, can guarantee the stability of communication, while fill as far as possible
Divide and utilizes bandwidth.Present invention is particularly suitable for the spaces that underground parking etc. has more wall.
Description of the drawings
Fig. 1 is shown as the flow diagram of an embodiment of the wireless communications method of the present invention.
Fig. 2 is shown as the control channel Establishing process schematic diagram of an embodiment of the wireless communications method of the present invention.
The transmission channel that Fig. 3 is shown as an embodiment of the wireless communications method of the present invention establishes adjustment flow diagram.
Fig. 4 is shown as the module diagram of an embodiment of the wireless communication system of the present invention.
Component label instructions
1 wireless communication system
11 channel frequency setting modules
12 control channels establish module
13 transmission channels establish module
14 transmission channels adjust module
S1~S5 steps
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this specification below by way of specific specific example
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
It should be noted that the diagram provided in the present embodiment only illustrates the basic conception of the present invention in a schematic way,
Then component count, shape and size when only display is with related component in the present invention rather than according to actual implementation in schema are painted
System, when actual implementation kenel, quantity and the ratio of each component can be a kind of random change, and its assembly layout kenel also may be used
It can be increasingly complex.
The present invention provides a kind of wireless communications method.In one embodiment, as shown in Figure 1, the wireless communications method
Including：
Step S1 sets a control channel frequency and N number of transmission channel frequency, and N is the natural number more than 1, described N number of
Transmission channel frequency is classified from low to high by frequency is named as the first transmission channel frequency to N transmission channel frequencies.Specifically,
The control channel frequency is with the transmission channel frequency in the frequency range of the same setting.As a preferred embodiment,
N number of transmission channel frequency is identical by the difference on the frequency of any two the adjacent transmission channel frequencies of frequency from small to large.One
In a embodiment, one control channel frequency C-CH (Control Channel) of setting==1.210GHz and three transmission
Channel frequency.Three transmission channel frequencies are respectively from small to large：First transmission channel frequency ACH (Absolute Channel,
Absolute channel)=1.220GHz；Second transmission channel frequency RCH (Relate Channel, Relative channel)=1.230GHz；The
Three transmission channel frequency CCH (Common Channel, conventional channel)=1.240GHz.Principle by radio communication it is found that
Transmission frequency is directly proportional to link load, and the lower link load of transmission frequency is with regard to smaller.That is in identical transmission path
On, the lower link load of transmission frequency is with regard to smaller.Therefore, the ability through walls of C-CH is most strong, and the ability through walls of ACH is taken second place, RCH's
Followed by ability through walls, the ability through walls of CCH is worst.And their bandwidth is then just opposite.The bandwidth of CCH is maximum, RCH's
Bandwidth is taken second place, and followed by the bandwidth of ACH, the bandwidth of C-CH is worst.
Step S2 is connect with control channel frequency foundation with the control channel of other side's wireless communication terminal.Specifically,
The control channel is the double-direction control channel for wirelessly communicating the terminal of both sides and being established respectively by control channel frequency.At one
In embodiment, as shown in Fig. 2, communicating pair is respectively A points and B points.A points pass through A points using control channel frequency C-CH channels
In the presence of when A points receive the notice of B points, B and A, which is established, to be connected；B points are deposited using control channel frequency C-CH channels by B points
, when B points receive the notice of A points, B and A foundation connections.It connect, i.e., is believed with the control at this point, A establishes two-way C-CH with B
Frequency C-CH foundation in road is connect with the control channel of other side's wireless communication terminal.In short, A points are logical using the frequency range that C-CH is defined
A points are accused, B points notice B points using the frequency range that C-CH is defined, and A points receive the C-CH notices of B points, and B points receive the C-CH notices of A points,
Two-way C-CH is successfully established.The A points or B points can be mobile terminals, can also be base station.
Step S3 is connect with N transmission channel frequencies foundation with the transmission channel of other side's wireless communication terminal.
Specifically, it is established with the maximum transmission channel frequency of frequency (i.e. N transmission channels frequency) in the defeated channel frequency of setting
It is connect with the transmission channel of other side's wireless communication terminal.In one embodiment, after control channel connection is successfully established,
With the maximum frequency in the transmission channel frequency of setting, i.e. third transmission channel frequency CCH is established to be wirelessly communicated with the other side
The transmission channel of terminal connects.
Step S4 adjusts the frequency of established transmission channel：Detect the received signal strength of established transmission channel
Indicated value sends the counterparting communications when the received signal strength indicator value is less than setting value by the control channel
Terminal by transmission channel frequency shift at the request of the transmission channel frequency of level-one lower than current transmission channel frequency, with low level-one
Transmission channel frequency establish transmission channel connection.In one embodiment, the setting value includes showing that transmission state is good
Power threshold.In one embodiment, the setting value can be adjusted according to the needs of actual environment.
Step S5 repeats the frequency for adjusting established transmission channel, until the reception signal of current transmission channel frequency
Strength indicator value is less than preset value or current transmission channel frequency is the first transmission channel frequency.
In one embodiment, the wireless communications method further includes：Receiving counterparting communications terminal will be by transmission channel
Frequency shift at the transmission channel frequency of level-one lower than current transmission channel frequency request when, by it is described request adjustment send
Transmission channel frequency.
In one embodiment, as shown in figure 3, the foundation of the transmission channel includes with adjustment：Check whether C-CH builds
It stands successfully, i.e. whether control channel connection is successfully established.It requires to initially set up C-CH control channels if establishing failure.Work as control
After channel connection is successfully established, CCH channels are first turned on, i.e., transmission are established with the maximum frequency in the transmission channel frequency of setting
Channel.Whether the RSSI (Received Signal Strength Indication, received signal strength indicator) of inspection CCH
Power threshold more than P (good), the i.e. power threshold of kilter, P (good), kilter is setting value.If CCH's
RSSI is more than the setting value, then CCH is transmission channel frequency.If the RSSI of CCH is less than the setting value, transmission letter is changed
Road frequency is the transmission channel frequency of level-one lower than current transmission channel frequency, i.e. the second transmission channel frequency RCH.Check RCH
RSSI whether be more than P (good), the power threshold of kilter, if the RSSI of RCH be more than threshold value, RCH be transmission channel
Frequency.If the RSSI of RCH is less than the setting value, it is level-one lower than current transmission channel frequency to change transmission channel frequency
Transmission channel frequency, i.e. the first transmission channel frequency ACH, check whether the RSSI of ACH is more than P (good), the work(of kilter
Rate threshold value, if the RSSI of ACH is more than threshold value, ACH is transmission channel frequency.If the RSSI of ACH is more than threshold value, show to set
Transmission channel frequency cannot all reach preset laser propagation effect, need to re-establish transmission channel connection.
The present invention also provides a kind of wireless communication systems.The wireless communication system can utilize above-mentioned wireless communications method
Improve the performance and efficiency of wireless communication.In one embodiment, as shown in figure 4, the wireless communication system 1 includes channel frequency
Rate setting module 11, control channel establishes module 12, transmission channel establishes module 13 and transmission channel adjusts module 14.Its
In：
Channel frequency setting module 11 is more than 1 for setting a control channel frequency and N number of transmission channel frequency, N
Natural number, N number of transmission channel frequency be classified from low to high by frequency is named as the first transmission channel frequency to N transmit
Channel frequency.Specifically, the control channel frequency and the transmission channel frequency are in the frequency range of the same setting.Make
For a kind of preferred embodiment, N number of transmission channel frequency is by any two the adjacent transmission channel frequencies of frequency from small to large
Difference on the frequency is identical.In one embodiment, set a control channel frequency C-CH (Control Channel)==
1.210GHz and three transmission channel frequency.Three transmission channel frequencies are respectively from small to large：First transmission channel frequency
ACH (Absolute Channel, absolute channel)=1.220GHz；Second transmission channel frequency RCH (Relate Channel,
Relative channel)=1.230GHz；Third transmission channel frequency CCH (Common Channel, conventional channel)=1.240GHz.It is logical
The principle of wireless communication is crossed it is found that transmission frequency is directly proportional to link load, the lower link load of transmission frequency is with regard to smaller.Also
It is to say in identical transmission path, the lower link load of transmission frequency is with regard to smaller.Therefore, therefore, the ability through walls of C-CH is most
By force, the ability through walls of ACH is taken second place, and followed by the ability through walls of RCH, the ability through walls of CCH is worst.And their bandwidth is then rigid
It is good opposite.The bandwidth of CCH is maximum, and the bandwidth of RCH is taken second place, and followed by the bandwidth of ACH, the bandwidth of C-CH is worst.
Control channel establishes module 12 and is connected with channel frequency setting module 11, for being established with the control channel frequency
It is connect with the control channel of other side's wireless communication terminal.Specifically, the control channel is to wirelessly communicate the terminal difference of both sides
The double-direction control channel established by control channel frequency.In one embodiment, control channel establishes the workflow of module 12
Journey is as shown in Fig. 2, communicating pair is respectively A points and B points.A points are existed using control channel frequency C-CH channels by A points, and A is worked as
When point receives the notice of B points, B and A, which is established, to be connected；B points are existed using control channel frequency C-CH channels by B points, when B is checked and accepted
To A points notice when, B and A, which are established, to be connected.It is connect at this point, A establishes two-way C-CH with B, i.e., with the control channel frequency C-CH
Foundation is connect with the control channel of other side's wireless communication terminal.In short, A points notice A points, B points using the frequency range that C-CH is defined
B points are noticed using the frequency range that C-CH is defined, A points receive the C-CH notices of B points, and B points receive the C-CH notices of A points, two-way C-CH
It is successfully established.The A points or B points can be mobile terminals, can also be base station.
Transmission channel establishes module 13 and is connected with channel frequency setting module 11, for the N transmission channel frequencies
Foundation is connect with the transmission channel of other side's wireless communication terminal.Specifically, with frequency in the defeated channel frequency of setting
Maximum transmission channel frequency (i.e. N transmission channels frequency) is established to be connected with the transmission channel of other side's wireless communication terminal
It connects.In one embodiment, after control channel connection is successfully established, with the maximum frequency in the transmission channel frequency of setting,
That is third transmission channel frequency CCH foundation is connect with the transmission channel of other side's wireless communication terminal.
Transmission channel adjusts module 14 and establishes module 12 and transmission channel with channel frequency setting module 11, control channel
It establishes module 13 to be connected, the frequency for adjusting established transmission channel：Detect the reception signal of established transmission channel
Strength indicator value sends the other side when the received signal strength indicator value is less than setting value by the control channel
Communication terminal by transmission channel frequency shift at the request of the transmission channel frequency of level-one lower than current transmission channel frequency, with low
The transmission channel frequency of level-one establishes transmission channel connection；The frequency for repeating the established transmission channel of adjustment, until working as forward pass
The received signal strength indicator value of defeated channel frequency is more than preset value or current transmission channel frequency is the first transmission channel frequency
Rate.In one embodiment, the setting value includes showing the good power threshold of transmission state.In one embodiment, institute
Stating setting value can be adjusted according to the needs of actual environment.In one embodiment, the transmission channel adjusts module 14
It is additionally operable to：Counterparting communications terminal is received by the transmission by transmission channel frequency shift at level-one lower than current transmission channel frequency
When the request of channel frequency, by the transmission channel frequency of the request adjustment transmission.
In one embodiment, as shown in figure 3, the transmission channel establishes module 13 and transmission channel adjustment module 14
Workflow includes：Check whether C-CH is successfully established, i.e. whether control channel connection is successfully established.It is required if establishing failure
Initially set up C-CH control channels.After control channel connection is successfully established, CCH channels are first turned on, i.e., with the transmission of setting
Maximum frequency in channel frequency establishes transmission channel.Check RSSI (the Received Signal Strength of CCH
Indication, received signal strength indicator) whether be more than P (good), i.e. the power threshold of kilter, P (good), well
The power threshold of state is setting value.If the RSSI of CCH is more than the setting value, CCH is transmission channel frequency.If CCH's
RSSI is less than the setting value, then changes the transmission channel frequency that transmission channel frequency is level-one lower than current transmission channel frequency
Rate, i.e. the second transmission channel frequency RCH.Check RCH RSSI whether be more than P (good), the power threshold of kilter, if
The RSSI of RCH is more than threshold value, then RCH is transmission channel frequency.If the RSSI of RCH is less than the setting value, transmission letter is changed
Road frequency is the transmission channel frequency of level-one lower than current transmission channel frequency, i.e. the first transmission channel frequency ACH checks ACH
RSSI whether be more than P (good), the power threshold of kilter, if the RSSI of ACH be more than threshold value, ACH be transmission channel
Frequency.If the RSSI of ACH is more than threshold value, shows that the transmission channel frequency of setting cannot all reach preset laser propagation effect, need
Re-establish transmission channel connection.
In conclusion a kind of wireless communications method and system of the present invention can dynamically adjust the channel frequency of transmission channel
Rate, local even if more than barrier, can guarantee the stability of communication, while make full use of bandwidth as far as possible.The present invention's
Technical solution, which is particularly suitable for underground parking etc., has the space of more wall.So the present invention effectively overcomes existing skill
Various shortcoming in art and have high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (8)
1. a kind of wireless communications method, which is characterized in that the wireless communications method includes：
One control channel frequency of setting and N number of transmission channel frequency, N are the natural number more than 1, N number of transmission channel frequency
Rate is classified from low to high by frequency is named as the first transmission channel frequency to N transmission channel frequencies；
It is connect with the control channel of other side's wireless communication terminal with control channel frequency foundation；
It is connect with the transmission channel of other side's wireless communication terminal with N transmission channel frequencies foundation；
Adjust the frequency of established transmission channel：The received signal strength indicator value for detecting established transmission channel, works as institute
When stating received signal strength indicator value less than setting value, the counterparting communications terminal is sent by the control channel and believes transmission
Road frequency shift at the transmission channel frequency of level-one lower than current transmission channel frequency request, with the transmission channel of low level-one frequency
Rate establishes transmission channel connection；
The frequency for repeating the established transmission channel of adjustment, until the received signal strength indicator value of current transmission channel frequency is small
In preset value or current transmission channel frequency be the first transmission channel frequency；
The control channel frequency is with the transmission channel frequency in the frequency range of the same setting.
2. wireless communications method according to claim 1, it is characterised in that：The wireless communications method further includes：It receives
Transmission channel frequency shift is asked at the transmission channel frequency of level-one lower than current transmission channel frequency to counterparting communications terminal
When asking, by the transmission channel frequency of the request adjustment transmission.
3. wireless communications method according to claim 1, it is characterised in that：N number of transmission channel frequency by frequency from
The small difference on the frequency to any two big adjacent transmission channel frequencies is identical.
4. wireless communications method according to claim 1, it is characterised in that：The setting value can be adjusted.
5. a kind of wireless communication system, it is characterised in that：The wireless communication system includes：
Channel frequency setting module, for setting a control channel frequency and N number of transmission channel frequency, N is the nature more than 1
Number, N number of transmission channel frequency is classified from low to high by frequency is named as the first transmission channel frequency to N transmission channel frequencies
Rate；
Control channel establishes module, is connected with channel frequency setting module, for control channel frequency foundation and other side
The control channel of wireless communication terminal connects；
Transmission channel establishes module, is connected with channel frequency setting module, for N transmission channel frequencies foundation and institute
State the transmission channel connection of other side's wireless communication terminal；
Transmission channel adjusts module, establishes module with channel frequency setting module, control channel and transmission channel establishes module
It is connected, the frequency for adjusting established transmission channel：The received signal strength indicator value of established transmission channel is detected,
When the received signal strength indicator value is less than setting value, sending the counterparting communications terminal by the control channel will pass
Defeated channel frequency is changed to the request of the transmission channel frequency of level-one lower than current transmission channel frequency, is believed with the transmission of low level-one
Road frequency establishes transmission channel connection；The frequency for repeating the established transmission channel of adjustment, until current transmission channel frequency
Received signal strength indicator value is more than preset value or current transmission channel frequency is the first transmission channel frequency；
The control channel frequency is with the transmission channel frequency in the frequency range of the same setting.
6. wireless communication system according to claim 5, it is characterised in that：The transmission channel adjustment module is additionally operable to：
Counterparting communications terminal is received by the transmission channel frequency by transmission channel frequency shift at level-one lower than current transmission channel frequency
When the request of rate, by the transmission channel frequency of the request adjustment transmission.
7. wireless communication system according to claim 5, it is characterised in that：N number of transmission channel frequency by frequency from
The small difference on the frequency to any two big adjacent transmission channel frequencies is identical.
8. wireless communication system according to claim 5, it is characterised in that：The setting value can be adjusted.
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| CN102113383A (en) * | 2008-08-08 | 2011-06-29 | 高通股份有限公司 | Updating frequency priority lists in wireless communications |
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| JP2008515309A (en) * | 2004-09-29 | 2008-05-08 | レイフ コミュニケーションズ エルエルシー | Control of portable digital devices |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102113383A (en) * | 2008-08-08 | 2011-06-29 | 高通股份有限公司 | Updating frequency priority lists in wireless communications |
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