CN108024298A - A kind of method and device of control terminal initiative roaming - Google Patents
A kind of method and device of control terminal initiative roaming Download PDFInfo
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- CN108024298A CN108024298A CN201711227580.8A CN201711227580A CN108024298A CN 108024298 A CN108024298 A CN 108024298A CN 201711227580 A CN201711227580 A CN 201711227580A CN 108024298 A CN108024298 A CN 108024298A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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Abstract
This application provides a kind of method and device of control terminal initiative roaming, this method includes：The signal transmission quality of the terminal STA of the first AP of first access point AP detection accesses；According to the signal transmission quality detected, determine whether the STA meets AP switching conditions；After the definite STA meets AP switching conditions, the trend that gradually increases according to the number of retransmissions of data message, controls the message transmissions between the first AP and STA.
Description
Technical field
This application involves field of communication technology, in particular to a kind of method and device of control terminal initiative roaming.
Background technology
In the WLAN (Wireless Local Area Network, WLAN) of thin AP models (i.e. AC+AP models)
In, terminal (Station, STA) is connected to wireless controller (Access by access point (AccessPoint, AP)
Control, AC).
Fig. 1 is prior wireless network networking structure schematic diagram, as shown in Figure 1, in a wireless local area network, an AC with more
STA is connected, and STA is in access network process, it is necessary first to finds available network, and then is selected according to signal strength from which AP
Access AC.If STA is initially connected on AP1, the dotted line frame position in Fig. 1 is moved in STA, STA distances AP1 farther out, signal
Intensity is weaker, and distance AP2 is closer, and signal strength is stronger, and due to working mechanism's reason of STA, STA is still connected on AP1,
Will not initiative roaming on AP2.
At present, a technical solution of triggering terminal roaming is that to perceive the signal strength of this STA in AC very weak, actively
AP1 is disconnected the connection with this STA, promote STA to rescan network, the more preferable AP2 of selection signal is accessed, still, so
It can cause the network interruption overlong time of STA.
The content of the invention
In view of this, the purpose of the application is to provide a kind of method and device of control terminal initiative roaming, for solving
Certainly AP actively disconnects the problem of being connected with STA when STA signal intensity ratios are relatively low in the prior art.
In a first aspect, the embodiment of the present application provides a kind of method of control terminal initiative roaming, this method includes：
The signal transmission quality of the terminal STA of the first AP of first access point AP detection accesses；
According to the signal transmission quality detected, determine whether the STA meets AP switching conditions；
After the definite STA meets AP switching conditions, the trend that gradually increases according to the number of retransmissions of data message, control
Make the message transmissions between the first AP and STA.
Alternatively, the trend that the number of retransmissions according to data message gradually increases, control the first AP and the STA it
Between message transmissions, including：
Receive the uplink data messages that the STA is sent；
The current re-transmission number of the uplink data messages and sending sequence number for the uplink data messages are determined, if institute
State number of retransmissions and described send sequence number matches with ACK triggering tables, then reply ACK messages, otherwise do not reply ACK messages；
Wherein, the ACK triggerings table include uplink data messages send sequence number with reply ACK messages when it is corresponding on
Correspondence between row data message retransmission number, the ACK, which is triggered, responds the number of retransmissions of ACK messages with transmission in table
The increase of sequence number and increase.
Alternatively, the trend that the number of retransmissions according to data message gradually increases, control the first AP and the STA it
Between message transmissions, including：
Closed according to the mapping between the number of retransmissions of the downlink data message of setting and the transmission order of downlink data message
System, determines the number of retransmissions of downlink data message；
Based on the definite number of retransmissions, it is determined whether send the lower line number for retransmitting flag and being set to the STA
According to message；
Wherein, it is retransmission downlink data message that the re-transmission flag, which is used to identify the downlink data message sent, described
The value of number of retransmissions in mapping relations increases with the increase of transmission order.
Alternatively, the method further includes：
The information of the channel occupancy duration for the wireless access point that the AC is sent is received, the channel occupancy duration is used to control
Make transmission duration when the first AP carries out downlink transfer；
The trend that the number of retransmissions according to data message gradually increases, controls between the first AP and STA
Message transmissions, including：
Between the trend that the number of retransmissions according to data message gradually increases, control the first AP and STA
During each downlink data message transmission, downlink data message transmission is carried out according to the channel occupancy duration.
Second aspect, the embodiment of the present application provide a kind of method of control terminal initiative roaming, and this method includes：
Wireless controller AC receives the signal transmission quality for the terminal STA that the first AP is sent；
According to the signal transmission quality, determine whether the STA meets AP switching conditions；
After the definite STA meets AP switching conditions, indicate the first AP according to data message number of retransmissions by
Cumulative big trend, controls the message transmissions between the first AP and STA；
The 2nd AP after selection switching；
Switching command is sent to the 2nd AP；The switching command is used to notify the 2nd AP is sent to the STA to access
It is recommended that.
The third aspect, the embodiment of the present application provides a kind of device of control terminal initiative roaming, applied to the first access point
In, which includes：
Detection module, the signal transmission quality of the terminal STA for detecting the first AP of access；
Determining module, for according to the signal transmission quality detected, determining whether the STA meets that AP switches bar
Part；
Control module, it is gradual according to the number of retransmissions of data message for after the definite STA meets AP switching conditions
The trend of increase, controls the message transmissions between the first AP and STA.
Alternatively, the control module is specifically used for：
Receive the uplink data messages that the STA is sent；
The current re-transmission number of the uplink data messages and sending sequence number for the uplink data messages are determined, if institute
State number of retransmissions and described send sequence number matches with ACK triggering tables, then reply ACK messages, otherwise do not reply ACK messages；
Wherein, the ACK triggerings table include uplink data messages send sequence number with reply ACK messages when it is corresponding on
Correspondence between row data message retransmission number, the ACK, which is triggered, responds the number of retransmissions of ACK messages with transmission in table
The increase of sequence number and increase.
Alternatively, the control module is specifically used for：
Closed according to the mapping between the number of retransmissions of the downlink data message of setting and the transmission order of downlink data message
System, determines the number of retransmissions of downlink data message；
Based on the definite number of retransmissions, it is determined whether send the lower line number for retransmitting flag and being set to the STA
According to message；
Wherein, it is retransmission downlink data message that the re-transmission flag, which is used to identify the downlink data message sent, described
The value of number of retransmissions in mapping relations increases with the increase of transmission order.
Alternatively, which further includes：
Receiving module, the information of the channel occupancy duration of the wireless access point sent for receiving the AC, the channel
Take transmission duration when duration is used to control the first AP progress downlink transfer；
The control module, is additionally operable to the trend gradually increased in the number of retransmissions according to data message, control described the
When each downlink data message between one AP and the STA transmits, downlink data report is carried out according to the channel occupancy duration
Text transmission.
Fourth aspect, the embodiment of the present application provides a kind of device of control terminal initiative roaming, applied to wireless controller
In AC, which includes：
Receiving module, the signal transmission quality of the terminal STA sent for receiving the first AP；
Determining module, for according to the signal transmission quality, determining whether the STA meets AP switching conditions；
Control module, for after the definite STA meets AP switching conditions, indicating the first AP according to data message
The trend that gradually increases of number of retransmissions, control the message transmissions between the first AP and STA；
Selecting module, for selecting the 2nd AP after switching；
Sending module, for sending switching command to the 2nd AP；The switching command is used to notify the 2nd AP to institute
State STA and send access suggestion.
The method and apparatus for a kind of control terminal initiative roaming that the application provides, by the STA for detecting the first AP of access
Signal transmission quality, determine whether STA meets AP switching conditions, after definite STA meets AP switching conditions, according to message weight
The trend that number gradually increases is passed, controls the message transmissions between the first AP and STA, and after STA meets AP switching conditions, the
One AP not will disconnect the connection between STA, but provide opportunity by way of gradually increasing message retransmission number for STA,
So that STA finds other AP accesses, avoid STA and the first AP and disconnect for a long time.
To enable the above-mentioned purpose of the application, feature and advantage to become apparent, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Brief description of the drawings
, below will be to needed in the embodiment attached in order to illustrate more clearly of the technical solution of the embodiment of the present application
Figure is briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the application, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the schematic network structure of the WLAN of existing thin AP models；
Fig. 2 the invention relates to a kind of wireless local area network (WLAN) system structure diagram；
Fig. 3 is a kind of flow diagram of the method for control terminal initiative roaming provided by the embodiments of the present application；
Fig. 4 the first flow of message transmissions between a kind of first AP and STA of control provided by the embodiments of the present application is shown
It is intended to；
Fig. 5 second of flow of message transmissions between a kind of first AP and STA of control provided by the embodiments of the present application is shown
It is intended to；
Fig. 6 is the process step of the method for another control terminal initiative roaming provided by the embodiments of the present application；
Fig. 7 is a kind of the first structure diagram of the device of control terminal initiative roaming provided by the embodiments of the present application；
Fig. 8 is a kind of second of structure diagram of the device of control terminal initiative roaming provided by the embodiments of the present application；
Fig. 9 is a kind of structure diagram for radio reception device 900 that one embodiment of the application provides；
Figure 10 is a kind of structure diagram for radio reception device 1000 that another embodiment of the application provides.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
Middle attached drawing, is clearly and completely described the technical solution in the embodiment of the present application, it is clear that described embodiment is only
It is some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is real
Applying the component of example can be arranged and designed with a variety of configurations.Therefore, below to the application's for providing in the accompanying drawings
The detailed description of embodiment is not intended to limit claimed scope of the present application, but is merely representative of the selected reality of the application
Apply example.Based on embodiments herein, institute that those skilled in the art are obtained on the premise of creative work is not made
There is other embodiment, shall fall in the protection scope of this application.
As shown in Fig. 2, the invention relates to a kind of wireless local area network (WLAN) system, set in the wireless local area network (WLAN) system
There are wireless controller AC21 and multiple access point AP (e.g., AP221, AP222, AP223 etc.), each AP and AC21, which is established, to be connected,
Multiple terminal STAs (e.g., STA231, STA232, STA233 etc.), pair that each AP will can be received can be connected on each AP
Answer the signal strength of STA to be transferred to AC21, so as to signal strengths of the AC21 based on the STA received determine STA and corresponding A P it
Between network connection status.
When AC21 determines that network between STA231 and AP221 is poor, AC21 can reduce the management message of AP221
Reply frequency, and increase the signal strength of AP222 and the reply frequency of management message, promote STA231 to be actively connected to AP222
On, but reduce AP222 management message reply frequency when, can cause STA231 due within the pre-set time not
Receive management message and take for network disappearance, so that the connection with AP222 is actively disconnected, although by increasing AP222's
The reply frequency of signal strength and management message can reduce STA231 and search time needed for the AP222, but still can cause
The prolonged network interruptions of STA231, meanwhile, the signal strength of AP221 is reduced, the network of other terminals can also be impacted.
It is different from above-mentioned technology, in the embodiment of the present application, after determining that the Network status between STA and AP is deteriorated, i.e.
After STA meets AP switching conditions, the trend that gradually increases according to data message number of retransmissions, controls the data between AP and STA
Message transmissions, and after STA meets AP switching conditions, AP not will disconnect the connection between STA, but by gradually increasing number
Opportunity is provided for STA according to the mode of the number of retransmissions of message, so that STA finds other AP accesses, is reduced by reducing AP's
Network interruption duration caused by the reply frequency of management message between STA and the first AP, meanwhile, it also avoid the letter of reduction AP
The influence that number intensity brings the other-end for being connected to the AP.
It is below in conjunction with the accompanying drawings and specific real to enable the above-mentioned purpose of the application, feature and advantage more obvious understandable
Mode is applied to be further described in detail the application.
In the following, by taking executive agent is the first AP as an example, to determining whether STA meets AP switching conditions, and in definite STA
After meeting AP switching conditions, the trend that gradually increases according to the number of retransmissions of data message, controls the report between the first AP and STA
Text transmission is illustrated：
The embodiment of the present application provides a kind of method of control terminal initiative roaming, as shown in figure 3, be applied in the first AP,
Comprise the following steps：
S301, the signal transmission quality of the STA of the first AP of detection access.
Specifically, signal transmission quality can be signal strength or data message retransmission rate, can be with based on these information
Determine whether the network between the STA and the first AP is deteriorated.
In specific implementation, the first AP can detect the signal strength of the STA of the first AP of access, can also detect access the
The data message retransmission rate of the STA of one AP, the application not limit this.
S302, according to the signal transmission quality detected, determines whether the STA meets AP switching conditions；
Specifically, AP switching conditions can be that signal strength is less than setting signal intensity threshold or retransmission rate reaches
To retransmission rate threshold value, can be determined based on actual conditions.
First AP can determine whether STA meets AP switching conditions based on following two modes：
Mode 1：First AP determines whether STA meets AP switching conditions according to the signal transmission quality detected；
Mode 2：The signal transmission quality detected is sent to AC by the first AP, and AC is according to the signal transmission matter received
Amount, judges whether STA meets AP switching conditions, and AC will determine that result is sent to the first AP, and the first AP is based on judging result, determines
Whether STA meets AP switching conditions.
In specific implementation, if the first AP detect be access the first AP STA signal strength, judge the signal
Whether intensity is less than the signal strength threshold of setting, after determining that the signal strength is less than the signal strength threshold of setting, determines
STA meets AP switching conditions；
And/or if what the first AP detected is data messages of the STA when carrying out data-message transmission for accessing the first AP
Retransmission rate, then judge whether the data message retransmission rate reaches the retransmission rate threshold value of setting, in the definite data message retransmission rate
After the retransmission rate threshold value for reaching setting, determine that STA meets AP switching conditions.
AC judges whether STA meets the processes of AP switching conditions and above-mentioned the by the first AP signal transmission qualities transmitted
One AP determines whether STA meets that the process of AP switching conditions is identical, is no longer excessively described herein.
S303, after the definite STA meets AP switching conditions, becomes according to what the number of retransmissions of data message gradually increased
Gesture, controls the message transmissions between the first AP and STA.
Specifically, the number of retransmissions of data message can be the number of retransmissions of uplink data messages or lower line number
According to the number of retransmissions of message, can select according to the actual requirements.
As shown in figure 4, the trend gradually increased according to the number of retransmissions of data message, control between the first AP and STA
Message transmissions, including：
Step 3031, the uplink data messages that STA is sent are received；
In specific implementation, multiple uplink data messages can treat that (STA is sent to AP directions to the first AP transmissions in STA
Data message be known as uplink data messages), STA sends above-mentioned data message successively.
Step 3032, the current re-transmission number of uplink data messages and sending sequence number for message are determined, if number of retransmissions
And sending sequence number for message matches with ACK triggering tables, then ACK messages are replied, otherwise do not reply ACK messages；Wherein, ACK
Triggering table includes the corresponding pass to send sequence number during with replying ACK messages between corresponding number of retransmissions of uplink data messages
System, corresponding number of retransmissions increases with the increase to send sequence number when replying ACK messages.
Specifically, then can be by being carried in uplink data messages in the first AP after definite STA meets switching condition
Message numbering determine the sequence numbers of the uplink data messages received, can further determine the data message of same sequence number
Number of retransmissions.
If it is determined that number of retransmissions and send sequence number with retransmit triggering table match, then triggering reply ACK messages, otherwise
Do not reply ACK.
For STA, for the data message of same sequence number (such as serial number N), returned if not receiving the first AP
Multiple ACK messages, then can trigger re-transmission.When the number in number and ACK the triggering table that triggering retransmits is identical, the first AP at this time
ACK messages can be replied.Terminal carries out the transmission of next data message (data message of serial number N+1) at this time.
The present embodiment illustrates the message transmissions between the first AP and STA so that following ACK trigger table as an example.
When the first AP determines that STA has met switching condition, when receiving uplink data messages, according to upstream data report
The message numbering that text carries, determines the sequence number of the message, which is to determine that STA meets first report received after switching condition
Text, then the first AP determine the sending sequence number as 1 of the message, if number of retransmissions at this time is 1, with following A CK triggerings table not
Matching, therefore ACK messages are not replied.
STA due to do not receive the first AP reply ACK messages, then above-mentioned message is retransmitted, when the first AP according to
The message numbering that the data message of re-transmission carries, it is that the re-transmission message of serial number 1 before this (is no longer to retransmit message to determine the message
Determine new sequence number, the sequence number of message is retransmitted still 1), to repeat the above process, until determining the number of retransmissions of the data message
For 3 when, at this time reply ACK messages.After STA receives the ACK messages of the first AP replies, then next data message is carried out
Transmission, the first AP determines the sending sequence number as 2 of above-mentioned next data message, the process of execution and send sequence number for 1 report
Text is similar, and details are not described herein.
When the message to send sequence number as 6 for the data message that the first AP determines to receive, then exist in the message of serial number 6
The reply of ACK messages is carried out when the 5th retransmits.And so on, until when the first AP receives the message to send sequence number as the 20th,
When the number of retransmissions of the message is the 19th time, ACK messages are replied.
The increases that sends sequence number of first AP with the message received can be seen that according to following A CK triggering tables, reply
The time interval of ACK messages also increases therewith, i.e., when replying ACK messages, the number of retransmissions of corresponding data message is gradually to increase
Big.
It should be noted that following A CK triggering tables are only an example, should not be as limitation.The present embodiment
In only by STA once only to the first AP send a uplink data messages exemplified by illustrate, in practice, STA can be at the same time
Multiple messages are sent to the first AP, similar situation may refer to the embodiment that following first AP send downlink message to STA, this
Embodiment repeats no more.
ACK triggers table
Thought by the process STA of the above-mentioned data message retransmission rate for being sequentially increased STA between local terminal and the first AP
Network it is poor, avoid network between STA and the first AP caused by increase retransmission rate suddenly and disconnect, also allow for STA and seek
The more preferable AP of signal strength is looked for switch over.
The application can also lead in addition to the message transmissions between the first AP and STA are controlled by uplink message number of retransmissions
Cross the message transmissions between the first AP and STA of downlink data message number of retransmissions control.
As shown in figure 5, the trend gradually increased according to the number of retransmissions of data message, control between the first AP and STA
Message transmissions, including：
Step 3035, according between the downlink data message number of retransmissions of setting and the transmission order of downlink data message
Mapping relations, determine the number of retransmissions of downlink data message；
Step 3036, based on definite above-mentioned number of retransmissions, it is determined whether send re-transmission flag to STA and be set down
Row data message；
Wherein, it is retransmission downlink data message to retransmit flag to be used to identify the downlink data message sent, number of retransmissions
Value increase with the increase of transmission order.
For in step 3036, the re-transmission according to corresponding to mapping relations determine the transmission order of downlink data message is secondary
Number, addition retransmits flag in the downlink data message, until the number of retransmissions of the downlink data message is more than according to mapping
During the number of retransmissions that relation determines, no longer addition retransmits flag.
It is re-transmission message that the purpose of addition re-transmission flag, which is so that STA recognizes the downlink data message received,
So as to which STA judges the quality of current network according to the quantity for retransmitting message, and then seek the more preferable AP of signal transmission quality and carry out
Connection.
Wherein, mapping relations are similar with the ACK triggering tables in above-described embodiment, and following mapping tables only provide one and show
Example, it can be seen that the number of retransmissions of downlink data message is with the increase of the transmission order of downlink data message in mapping table
And increase.
Mapping table
| The transmission order of downlink data message | Downlink data message number of retransmissions |
| 1-5 | 3 |
| 6-9 | 5 |
| 10-13 | 9 |
| 14-16 | 13 |
| 17-19 | 15 |
| 20 | 19 |
In specific implementation, can the numbering based on downlink data message when determining that STA meets switching condition in the first AP
The transmission order of downlink data message is set, and the transmission order based on downlink data message sends corresponding downlink data report successively
Text.
For example, the transmission order of downlink data message can be：Numbering 1- numberings 5, numbering 6- numberings 9, numbering 10- numberings
13rd, numbering 14- numberings 16, numbering 17- numberings 19, numbering 20, the number of retransmissions of corresponding transmission order are followed successively by：3、5、9、13、
15th, 19, the first AP send out the downlink data message of numbering 1- numberings 5 to STA, in the hair of the downlink data message of numbering 1- numberings 5
After sending number to reach first number of retransmissions 3, the first AP sends the downlink data message of 5 numbering 6- numberings 9 to STA, subsequently
Each the transmission process of the corresponding downlink data message of transmission order is same as described above, is no longer described one by one.
Further, after the first AP determines that STA meets AP switching conditions, the first AP can also receive what the AC was sent
During transmission when the information of channel occupancy duration, the channel occupancy duration are used to controlling the first AP carry out downlink transfer
It is long；
The trend gradually increased according to message retransmission number, controls the message transmissions between the first AP and STA, including：
It is each between the trend that the number of retransmissions according to data message gradually increases, control the first AP and STA
When downlink data message transmits, downlink data message transmission is carried out according to the channel occupancy duration.
Specifically, channel occupancy duration is usually that user is set based on actual demand.Carrying out downlink data message biography
Before defeated, the channel occupancy duration of the first AP, controls and configuration protocol of the AC by wireless access point can be set in AC
(Control And Provisioning of Wireless Access Points Protocol Specification,
CAPWAP) channel occupancy duration is sent to the first AP by message, and the first AP is controlled based on the channel occupancy duration received and carried out
Transmission duration when downlink data message transmits.
In specific implementation, can be by the channel occupancy duration (TXOP in AC after STA meets AP switching conditions
Limit given threshold, e.g., 0) are arranged to.The channel occupancy duration is sent to the first AP by AC by CAPWAP message, in this way,
First AP is once only capable of sending a downlink data message when sending downlink data message, is sending next downlink data
, it is necessary to competitive channel again during message, the back off time of the first AP is added so that STA there can be time enough to find letter
Number more preferable AP of intensity.
The method for the control terminal initiative roaming that the application provides, the signal transmission of the STA by detecting the first AP of access
Quality, determines whether STA meets AP switching conditions, gradual according to message retransmission number after definite STA meets AP switching conditions
The trend of increase, controls the message transmissions between the first AP and STA, and after STA meets AP switching conditions, the first AP will not break
The connection between STA is opened, but opportunity is provided for STA by way of gradually increasing message retransmission number, so that STA is found
Other AP accesses.
In order to more clearly understand application scheme, it is described in further detail below by another embodiment.
As shown in fig. 6, the method flow diagram of switching AP provided by the embodiments of the present application, including：
S601, the first AP send the signal transmission quality of STA to AC；
S602, AC determine whether the STA meets AP switching conditions according to the signal transmission quality.
After definite STA meets AP switching conditions, the first AP of instruction is gradual according to the number of retransmissions of data message by S603, AC
The trend of increase, controls the message transmissions between the first AP and STA.
Wherein, the first AP controls the process of the data-message transmission between the first AP and STA to carry out detailed retouch above
State, no longer excessively illustrated herein.
The 2nd AP after S604, AC selection switching；
In specific implementation, signal strength can be more than or equal to setting by AC from other AP in addition to the first AP
The AP of signal strength threshold is ranked up, and the most strong AP of selection signal intensity is as the 2nd AP.
S605, AC send switching command to the 2nd AP；Switching command is used to notify the 2nd AP to send access to STA and build
View.
Specifically, the identification information of STA be with being but not limited to (Media the Access Control, MAC) of STA
Location, device name etc., the application not limit this.
The identification information of S606, the 2nd AP based on the STA carried in the switching command, sends access to STA and suggests；Connect
Enter to be proposed to be used in instruction STA and access the 2nd AP.
Specifically, the mark of the 2nd AP can also be carried in switching command, access can also carry second in suggesting
The mark of AP.
In specific implementation, the mark of the 2nd AP can be the title of the second AP, after the 2nd AP receives switching command, base
The title of the 2nd AP is sent to STA in the identification information of STA, so that STA accesses the 2nd AP, is provided and is adapted to STA by AC
2nd AP of STA switchings, reduces STA itself and finds the time that other AP are spent.Wherein, AC can meet AP in definite STA
After switching condition, the trend that gradually increases according to the number of retransmissions of data message of the first AP of instruction, controls between the first AP and STA
Message transmissions before, send switching command to the 2nd AP, can also during the first AP and STA carry out data-message transmission to
2nd AP sends switching command, can be determined according to actual conditions.
Based on same inventive concept, the embodiment of the present application provides the device of control terminal initiative roaming, due to the device
The principle solved the problems, such as is similar to the method for the control terminal initiative roaming of the embodiment of the present application, therefore the implementation of the device can be with
Referring to the implementation of method, overlaps will not be repeated.
The embodiment of the present application provides a kind of device of control terminal initiative roaming, as shown in fig. 7, be applied in the first AP,
The device includes：
Detection module 71, the signal transmission quality of the terminal STA for detecting the first AP of access；
Determining module 72, for according to the signal transmission quality detected, determining whether the STA meets that AP switches
Condition；
Control module 73, for after the definite STA meets AP switching conditions, according to data message number of retransmissions by
Cumulative big trend, controls the message transmissions between the first AP and STA.
Alternatively, the control module 73 is specifically used for：
Receive the uplink data messages that the STA is sent；
The current re-transmission number of the uplink data messages and sending sequence number for the uplink data messages are determined, if institute
State number of retransmissions and described send sequence number matches with ACK triggering tables, then reply ACK messages, otherwise do not reply ACK messages；
Wherein, the ACK triggerings table include uplink data messages send sequence number with reply ACK messages when it is corresponding on
Correspondence between row data message retransmission number, the ACK, which is triggered, responds the number of retransmissions of ACK messages with transmission in table
The increase of sequence number and increase.
Alternatively, the control module 73 is specifically used for：
Closed according to the mapping between the number of retransmissions of the downlink data message of setting and the transmission order of downlink data message
System, determines the number of retransmissions of downlink data message；
Based on the definite number of retransmissions, it is determined whether send the lower line number for retransmitting flag and being set to the STA
According to message；
Wherein, it is retransmission downlink data message that the re-transmission flag, which is used to identify the downlink data message sent, described
The value of number of retransmissions in mapping relations increases with the increase of transmission order.
Alternatively, which further includes：
Receiving module 74, the information of the channel occupancy duration of the wireless access point sent for receiving the AC, the letter
Road takes transmission duration when duration is used to control the first AP progress downlink transfer；
The control module 73, is additionally operable to the trend gradually increased in the number of retransmissions according to data message, described in control
When each downlink data message between first AP and the STA transmits, downlink data is carried out according to the channel occupancy duration
Message transmissions.
The embodiment of the present application provides a kind of device of control terminal initiative roaming, as shown in figure 8, being applied to wireless control
In device AC, which includes：
Receiving module 81, the signal transmission quality of the terminal STA sent for receiving the first AP；
Determining module 82, for according to the signal transmission quality, determining whether the STA meets AP switching conditions；
Control module 83, for after the definite STA meets AP switching conditions, indicating the first AP according to datagram
The trend that the number of retransmissions of text gradually increases, controls the message transmissions between the first AP and STA；
Selecting module 84, for selecting the 2nd AP after switching；
Sending module 85, for sending zhi switching commands to the 2nd AP；The switching command is used to notify the 2nd AP
Access is sent to the STA to suggest.
As shown in figure 9, one embodiment of the application provides a kind of radio reception device 900, it is applied to first for performing
The method of control terminal initiative roaming in AP, the equipment include memory 901, processor 902 and are stored in the memory 901
Computer program that is upper and being run on the processor 902, wherein, when above-mentioned processor 902 performs above computer program
The step of realizing the method for above-mentioned control terminal initiative roaming.
Specifically, above-mentioned memory 901 and processor 902 can be general memory and processor, do not do have here
Body limits, and when the computer program of 902 run memory 901 of processor storage, it is actively unrestrained to be able to carry out above-mentioned control terminal
The method of trip, is connected with STA for solving the problems, such as that AP is actively disconnected when STA signal intensity ratios are relatively low in the prior art, leads to
The signal transmission quality of the STA of the first AP of detection access is crossed, determines whether STA meets AP switching conditions, meets AP in definite STA
After switching condition, the trend that gradually increases according to message retransmission number controls the message transmissions between the first AP and STA, and
After STA meets AP switching conditions, the first AP not will disconnect the connection between STA, but by gradually increasing message retransmission time
Several modes provide opportunity for STA, so that STA finds other AP accesses, avoid STA and the first the AP company of disconnection for a long time
Connect.
Corresponding to the method for above-mentioned control terminal initiative roaming, the embodiment of the present application additionally provides a kind of computer-readable deposit
Storage media, is stored with computer program on the computer-readable recording medium, which performs when being run by processor
The step of method of above-mentioned control terminal initiative roaming.
Specifically, which can be general storage medium, such as mobile disk, hard disk, on the storage medium
Computer program when being run, the method for being able to carry out above-mentioned control terminal initiative roaming, for solving AP in the prior art
The problem of being connected with STA is actively disconnected when STA signal intensity ratios are relatively low, is passed by detecting the signal of STA of the first AP of access
Transmission quality, determines whether STA meets AP switching conditions, after definite STA meets AP switching conditions, according to message retransmission number by
Cumulative big trend, controls the message transmissions between the first AP and STA, and after STA meets AP switching conditions, the first AP will not
The connection between STA is disconnected, but opportunity is provided for STA by way of gradually increasing message retransmission number, so that STA is sought
Look for other AP to access, avoid STA and the first AP and disconnect for a long time.
As shown in Figure 10, one embodiment of the application provides a kind of radio reception device 1000, is applied to AC for performing
In control terminal initiative roaming method, which includes memory 1001, processor 1002 and is stored in the memory
On 1001 and the computer program that can be run on the processor 1002, wherein, above-mentioned processor 1002 performs above computer
The step of method of above-mentioned control terminal initiative roaming is realized during program.
Specifically, above-mentioned memory 1001 and processor 1002 can be general memory and processor, not do here
It is specific to limit, when the computer program of 1002 run memory 1001 of processor storage, it is able to carry out above-mentioned control terminal master
Animation trip method, for solve in the prior art AP when STA signal intensity ratios are relatively low actively disconnect be connected with STA ask
Topic, the signal transmission quality of the STA by detecting the first AP of access, determines whether STA meets AP switching conditions, in definite STA
After meeting AP switching conditions, the trend that gradually increases according to message retransmission number of the first AP of instruction, controls between the first AP and STA
Message transmissions, and after STA meets AP switching conditions, the first AP not will disconnect the connection between STA, but by gradual
The mode of increase message retransmission number provides opportunity for STA, so that STA finds other AP accesses, avoids STA and the first AP long
Time disconnects.
Corresponding to the method applied to the control terminal initiative roaming in AC, the embodiment of the present application additionally provides a kind of calculating
Machine readable storage medium storing program for executing, is stored with computer program on the computer-readable recording medium, which is transported by processor
The step of method of above-mentioned control terminal initiative roaming is performed during row.
Specifically, which can be general storage medium, such as mobile disk, hard disk, on the storage medium
Computer program when being run, the method for being able to carry out above-mentioned control terminal initiative roaming, for solving AP in the prior art
The problem of being connected with STA is actively disconnected when STA signal intensity ratios are relatively low, is passed by detecting the signal of STA of the first AP of access
Transmission quality, determines whether STA meets AP switching conditions, and after definite STA meets AP switching conditions, the first AP is according to message for instruction
The trend that number of retransmissions gradually increases, controls the message transmissions between the first AP and STA, and after STA meets AP switching conditions,
First AP not will disconnect the connection between STA, but when being provided by way of gradually increasing message retransmission number for STA
Machine, so that STA finds other AP accesses, avoids STA and the first AP and disconnects for a long time.
In embodiment provided herein, it should be understood that disclosed apparatus and method, can be by others side
Formula is realized.Device embodiment described above is only schematical, for example, the division of the unit, is only that one kind is patrolled
Function division is collected, there can be other dividing mode when actually realizing, in another example, multiple units or component can combine or can
To be integrated into another system, or some features can be ignored, or not perform.Another, shown or discussed is mutual
Coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some communication interfaces, device or unit
Connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
In network unit.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in the embodiment that the application provides can be integrated in a processing unit, also may be used
To be that unit is individually physically present, can also two or more units integrate in a unit.
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 the prior art 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 storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing, in addition, term " the
One ", " second ", " the 3rd " etc. are only used for distinguishing description, and it is not intended that instruction or hint relative importance.
Finally it should be noted that：Embodiment described above, is only the embodiment of the application, to illustrate the application
Technical solution, rather than its limitations, the protection domain of the application is not limited thereto, although with reference to the foregoing embodiments to this Shen
It please be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope that the application discloses, it can still modify the technical solution described in previous embodiment or can be light
It is readily conceivable that change, or equivalent substitution is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of the embodiment of the present application technical solution.The protection in the application should all be covered
Within the scope of.Therefore, the protection domain of the application answers the scope of the claims of being subject to.
Claims (10)
- A kind of 1. method of control terminal initiative roaming, it is characterised in that this method includes：The signal transmission quality of the terminal STA of the first AP of first access point AP detection accesses；According to the signal transmission quality detected, determine whether the STA meets AP switching conditions；After the definite STA meets AP switching conditions, the trend that gradually increases according to the number of retransmissions of data message, controls institute State the message transmissions between the first AP and the STA.
- 2. the method as described in claim 1, it is characterised in that what the number of retransmissions according to data message gradually increased becomes Gesture, controls the message transmissions between the first AP and STA, including：Receive the uplink data messages that the STA is sent；The current re-transmission number of the uplink data messages and sending sequence number for the uplink data messages are determined, if described heavy Pass number and described send sequence number matches with ACK triggering tables, then reply ACK messages, otherwise do not reply ACK messages；Wherein, the ACK triggerings table includes corresponding upper line number during with replying ACK messages that sends sequence number of uplink data messages The number of retransmissions of ACK messages is responded according to the correspondence between message retransmission number, in the ACK triggerings table with sending sequence number Increase and increase.
- 3. method as claimed in claim 1 or 2, it is characterised in that the number of retransmissions according to data message gradually increases Trend, control the message transmissions between the first AP and STA, including：According to the mapping relations between the number of retransmissions of the downlink data message of setting and the transmission order of downlink data message, really Determine the number of retransmissions of downlink data message；Based on the definite number of retransmissions, it is determined whether send the downlink data report for retransmitting flag and being set to the STA Text；Wherein, described to retransmit flag to be used to identify the downlink data message sent be retransmission downlink data message, the mapping The value of number of retransmissions in relation increases with the increase of transmission order.
- 4. the method as described in claim 1, it is characterised in that the method further includes：The information for the channel occupancy duration that the AC is sent is received, the channel occupancy duration is used to control the first AP to carry out Transmission duration during downlink transfer；The trend that the number of retransmissions according to data message gradually increases, controls the report between the first AP and STA Text transmission, including：It is each between the trend that the number of retransmissions according to data message gradually increases, control the first AP and STA When downlink data message transmits, downlink data message transmission is carried out according to the channel occupancy duration.
- A kind of 5. method of control terminal initiative roaming, it is characterised in that this method includes：Wireless controller AC receives the signal transmission quality for the terminal STA that the first AP is sent；According to the signal transmission quality, determine whether the STA meets AP switching conditions；After the definite STA meets AP switching conditions, indicate that the first AP gradually increases according to the number of retransmissions of data message Big trend, controls the message transmissions between the first AP and STA；The 2nd AP after selection switching；Switching command is sent to the 2nd AP；The switching command is used to notify the 2nd AP to send access to the STA and suggest.
- 6. a kind of device of control terminal initiative roaming, it is characterised in that applied in the first access point, which includes：Detection module, the signal transmission quality of the terminal STA for detecting the first AP of access；Determining module, for according to the signal transmission quality detected, determining whether the STA meets AP switching conditions；Control module, for after the definite STA meets AP switching conditions, gradually increasing according to the number of retransmissions of data message Trend, control the message transmissions between the first AP and STA.
- 7. device as claimed in claim 6, it is characterised in that the control module is specifically used for：Receive the uplink data messages that the STA is sent；The current re-transmission number of the uplink data messages and sending sequence number for the uplink data messages are determined, if described heavy Pass number and described send sequence number matches with ACK triggering tables, then reply ACK messages, otherwise do not reply ACK messages；Wherein, the ACK triggerings table includes corresponding upper line number during with replying ACK messages that sends sequence number of uplink data messages The number of retransmissions of ACK messages is responded according to the correspondence between message retransmission number, in the ACK triggerings table with sending sequence number Increase and increase.
- 8. device as claimed in claims 6 or 7, it is characterised in that the control module is specifically used for：According to the mapping relations between the number of retransmissions of the downlink data message of setting and the transmission order of downlink data message, really Determine the number of retransmissions of downlink data message；Based on the definite number of retransmissions, it is determined whether send the downlink data report for retransmitting flag and being set to the STA Text；Wherein, described to retransmit flag to be used to identify the downlink data message sent be retransmission downlink data message, the mapping The value of number of retransmissions in relation increases with the increase of transmission order.
- 9. device as claimed in claim 6, it is characterised in that the device further includes：Receiving module, the information of the channel occupancy duration of the wireless access point sent for receiving the AC, the channel occupancy Duration is used to control transmission duration during the first AP progress downlink transfer；The control module, is additionally operable to the trend gradually increased in the number of retransmissions according to data message, controls the first AP When each downlink data message between the STA transmits, downlink data message biography is carried out according to the channel occupancy duration It is defeated.
- 10. a kind of device of control terminal initiative roaming, it is characterised in that applied in wireless controller AC, which includes：Receiving module, the signal transmission quality of the terminal STA sent for receiving the first AP；Determining module, for according to the signal transmission quality, determining whether the STA meets AP switching conditions；Control module, for after the definite STA meets AP switching conditions, indicating weights of the first AP according to data message The trend that number gradually increases is passed, controls the message transmissions between the first AP and STA；Selecting module, for selecting the 2nd AP after switching；Sending module, for sending switching command to the 2nd AP；The switching command is used to notify the 2nd AP to the STA Access is sent to suggest.
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| CN201711227580.8A CN108024298B (en) | 2017-11-29 | 2017-11-29 | Method and device for controlling terminal to actively roam |
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| CN201711227580.8A CN108024298B (en) | 2017-11-29 | 2017-11-29 | Method and device for controlling terminal to actively roam |
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| CN108024298B (en) | 2021-01-01 |
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