CN104283648B - Feeding back confirmation message transmission method, the apparatus and system of WLAN - Google Patents
Feeding back confirmation message transmission method, the apparatus and system of WLAN Download PDFInfo
- Publication number
- CN104283648B CN104283648B CN201310287925.4A CN201310287925A CN104283648B CN 104283648 B CN104283648 B CN 104283648B CN 201310287925 A CN201310287925 A CN 201310287925A CN 104283648 B CN104283648 B CN 104283648B
- Authority
- CN
- China
- Prior art keywords
- ack
- packet
- feedback
- ack feedback
- velocities
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- H04L1/1607—Details of the supervisory signal
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses feeding back confirmation message transmission method, the apparatus and system of a kind of WLAN, the present invention is provided after receiving terminal receives packet, ack is sent using the feedback velocity for adapting to link-quality so that receiving terminal can have correctly received the ack of transmitting terminal feedback.So, after ensuring that receiving terminal receives packet in a wireless local area network, the ack of feedback can be properly received by transmitting terminal.
Description
Technical field
The present invention relates to WLAN field, the feeding back confirmation message transmission side of more particularly to a kind of WLAN
Method, apparatus and system.
Background technology
In a wireless local area network, after transmitting terminal sends packet to receiving terminal with mode of unicast, it is necessary to receive
Hold the confirmation message of feedback（ack）, after transmitting terminal has correctly received ack, just confirm that this packet is transmitted, otherwise need
To enter retransmission processes.
Fig. 1 is the timing diagram of prior art transmission packet, is point first as illustrated, when transmitting a packet
Cloth coordinates frame period（DIFS）, confirming in the frame can be with transmission packet；Followed by competition window（Contention
window）, the packet to be transmitted is competed during this period；Again, transmitting physical layer convergence protocol（PLCP）Head, that is, passed
The protocol header of transmission of data bag；Again, in data structure（data Frame）Middle transmission packet；Finally, short interFrameGap is waited
（SIFS）Afterwards, the ack of feedback is received, completes the transmission of a packet.
Feedback ack speed is defined in IEEE802.11 agreements with sending the corresponding relation of packet rate, such as the institute of table 1
Show：
Table 1
The packet sent for different rates, its feedback ack received speed also differ.Such as in 11n series
In, for different modulating encoding levels（MCS）The packet of transmission, its ack speed fed back are different, are sent out when using MCS0
When sending packet, the ack speed of feedback is 6 megabit per seconds（Mbps）, when sending packet using MCS1 and MCS2, feedback
Ack speed is 12Mbps, and when sending packet using the MCS of higher level, the ack speed of feedback is 24Mbps.Feeding back
During ack, it, which feeds back ack speed, can not be more than data package transmission velocity.
In order to realize the correct transmission of packet, the packet hair described in table 1 is all prestored in transmitting terminal and receiving terminal
The corresponding relation of transmission rate and ack feedback velocities, after receiving terminal receives the packet of transmitting terminal transmission, according to received number
After ack feedback velocities corresponding to the transmission rate determination of bag, ack is fed back into transmission according to identified ack feedback velocities
End.For transmitting terminal, can be properly received ack feedback be judge packet whether the key factor of transmission success.
At present, in a wireless local area network, it is understood that there may be the unbalanced problem of link, the reception signal such as uplink downlink are strong
Spend and uneven, often downlink quality is far longer than uplink quality, i.e. terminal transmits the ability of data to access point
Ability compared with from access point to terminal transmission data is weak, in general, the received signal strength indicator of up-link（RSSI）Compared with
The RSSI of downlink is average low 5~10 decibels（dB）, the size selection of packet or ack transmission rates is big with opposite end quality
It is small directly proportional, that is to say, that if opposite end quality is smaller, it is necessary to select smaller transmit power send packet or
ack.In the current network environment of WLAN, according to the corresponding relation described in table 1, ack feedback velocities not more than count
According to the transmission rate of bag, but if ack corresponding to the transmission rate of packet is selected to feed back according to the corresponding relation described in table 1
Speed, when access point is transmitting terminal, and terminal is receiving terminal, still results in access point and packet is successfully sent to terminal
Afterwards, the ack of terminal feedback can not be had correctly received by access point, and access point thinks that packet sends failure, retransmits packet, makes
Into the waste of link circuit resource.
The content of the invention
In view of this, the present invention provides a kind of feeding back confirmation message transmission method of WLAN, and this method ensures
After receiving terminal receives packet in WLAN, the ack of feedback can be properly received by transmitting terminal.
The present invention also provides a kind of feeding back confirmation message Transmission system of WLAN, and the system ensures in wireless local
After receiving terminal receives packet in net, the ack of feedback can be properly received by transmitting terminal.
The present invention also provides a kind of feeding back confirmation message transmitting device of WLAN, and the device ensures in wireless local
After receiving terminal receives packet in net, the ack of feedback can be properly received by transmitting terminal.
To reach above-mentioned purpose, what the technical scheme that the present invention is implemented specifically was realized in：
A kind of feeding back confirmation message transmission method of WLAN, this method include：
It is using the ack feedback velocities for adapting to link-quality that ack is anti-after receiving terminal receives the packet of transmitting terminal transmission
Feed transmitting terminal.
Data package transmission velocity is set with adapting to the ack feedback velocity corresponding relations of link-quality in receiving terminal, it is described to adopt
Ack is fed back into transmitting terminal with the ack feedback velocities for adapting to link-quality is：
Receiving terminal adapts to the ack feedback speed of link-quality according to corresponding to the corresponding relation determines the transmission rate of packet
Rate, ack is sent using identified ack feedback velocities.
It is described use adapt to link-quality ack feedback velocities by ack feed back to transmitting terminal for：
Receiving terminal sets the corresponding relation of data package transmission velocity and ack feedback velocities, upon reception of the data packet, it is determined that
The packet is when retransmitting packet and having been received by the packet before, by the data package transmission velocity and higher than the data
After ack feedback velocities corresponding to packet sending speed reduce a set grade, speed is fed back according to the ack after being downgraded
Rate feeds back ack；Otherwise, then ack feedback velocities are determined according to corresponding relation, feeds back ack.
Before the process per se, in addition to：
Receiving terminal consults ack feedback systems with transmitting terminal, and what receiving end/sending end was sent is carried on beacon frame Beacon, detection
Ask Probe request, detection request response Probe response or association request association request guarantor
Ack feedback systems in section of writeeing down characters, or ack feedbacks are carried in association response association response reserved field
Mode is sent to transmitting terminal.
A kind of feeding back confirmation message transmission method of WLAN, this method include：
Transmitting terminal is according to the transmission rate for sending packet and the ack feedback velocities calculating reception ack for adapting to link-quality
Time value, ack is received in reception ack time values.
Data package transmission velocity is set with adapting to the ack feedback velocity corresponding relations of link-quality in transmitting terminal,
The calculating receives ack time values：
According to the corresponding relation, it is calculated and receives ack time values.
The calculating receives ack time values：
Transmitting terminal sets the corresponding relation of data package transmission velocity and ack feedback velocities, when transmitted packet is attached most importance to
When passing packet, it is determined that receiving before and having parsed feedback ack protocol header, then by the data package transmission velocity and higher than this
Ack feedback velocities corresponding to data package transmission velocity reduce a set grade, calculate and receive ack time values；Otherwise, then
Determined to receive ack time values according to the corresponding relation.
A kind of feeding back confirmation message Transmission system of WLAN, including：Receiving terminal and transmitting terminal, wherein,
Transmitting terminal, for sending packet to receiving terminal, according to the transmission rate for sending packet and adapt to link-quality
Ack feedback velocities calculate receive ack time values, receive ack in reception ack time values；
Receiving terminal, after received data packet, ack is fed back to by transmission using the ack feedback velocities for adapting to link-quality
End.
Transmitting terminal, it is additionally operable to set data package transmission velocity with adapting to the ack feedback velocity corresponding relations of link-quality, root
Determine to receive ack time values according to the corresponding relation, receiving the ack of reception receiving terminal feedback in ack time values；
Receiving terminal, it is additionally operable to set data package transmission velocity with adapting to the ack feedback velocity corresponding relations of link-quality, root
Ack feedback velocities corresponding to the transmission rate of received data packet are determined according to the corresponding relation, speed is fed back according to identified ack
Rate feeds back ack to transmitting terminal.
Transmitting terminal, it is additionally operable to set the corresponding relation of data package transmission velocity and ack feedback velocities, when transmitted data
When wrapping to retransmit packet, it is determined that receive before and parsed feedback ack protocol header, then by the data package transmission velocity and
A set grade is reduced higher than ack feedback velocities corresponding to the data package transmission velocity, calculates and receives ack time values,
The ack of receiving terminal feedback is received in this time value；Otherwise, then reception ack time values are determined according to the corresponding relation, at this
Between be worth in receive receiving terminal feedback ack；
Receiving terminal, it is additionally operable to set the corresponding relation of data package transmission velocity and ack feedback velocities, when receiving packet
When, it is when retransmitting packet and having been received by the packet before, by the data package transmission velocity and height to determine the packet
After a set grade is reduced in ack feedback velocities corresponding to the data package transmission velocity, after being downgraded
Ack feedback velocities feed back ack；Otherwise, then ack feedback velocities are determined according to corresponding relation, feeds back ack.
Transmitting terminal, it is additionally operable to consult ack feedback systems with receiving terminal, ack feedback systems is carried on Beacon, Probe
Receiving terminal is notified in request, Probe response or association request reserved field, or is received
Ack feedback systems in association response reserved field；
Receiving terminal, be additionally operable to transmitting terminal consult ack feedback systems, receiving end/sending end send be carried on Beacon,
Ack feedback systems in Probe request, Probe response or association request reserved field, or
Ack feedback systems are carried in association response reserved field and are sent to transmitting terminal.
A kind of feeding back confirmation message transmitting device of WLAN, including：Sending module, setup module and reception mould
Block, wherein,
Sending module, for sending packet to receiving terminal,
Setup module, for according to the transmission rate for sending packet and the ack feedback velocities calculating for adapting to link-quality
Receive ack time values；
Receiving module, for receiving ack in the reception ack time values that are set in setup module.
Setup module, it is additionally operable to set data package transmission velocity with adapting to the ack feedback velocity corresponding relations of link-quality,
Determined to receive ack time values according to the corresponding relation.
Sending module, it is additionally operable to send packet to retransmit packet；
Setup module, it is additionally operable to set the corresponding relation of data package transmission velocity and ack feedback velocities, confirms receiving module
Receive before and parsed feedback ack protocol header, then by the data package transmission velocity and higher than the data package transmission velocity
Corresponding ack feedback velocities reduce a set grade, calculate and receive ack time values, otherwise, true according to the corresponding relation
Surely ack time values are received.
Sending module, be additionally operable to receiving terminal consult ack feedback systems, by ack feedback systems be carried on Beacon,
Receiving terminal is notified in Probe request, Probe response or association request reserved field；
Or receiving module, it is additionally operable to consult ack feedback systems with receiving terminal, receives in association
Ack feedback systems in response reserved field.
A kind of feeding back confirmation message transmitting device of WLAN, including：Receiving module, setup module and transmission mould
Block, wherein,
Receiving module, for received data packet；
Setup module, for setting using the ack feedback velocities for adapting to link-quality；
Ack is fed back to transmission by sending module, the feedback velocity of the adaptation link-quality for being set according to setup module
End.
Setup module, it is additionally operable to set data package transmission velocity with adapting to the ack feedback velocity corresponding relations of link-quality；
Sending module, it is additionally operable to the ack according to corresponding to the corresponding relation determines the transmission rate of received data packet and feeds back
Speed, ack is fed back to transmitting terminal according to identified ack feedback velocities.
Setup module, it is additionally operable to set the corresponding relation of data package transmission velocity and ack feedback velocities, when receiving data
Bao Shi, it is to retransmit packet and when having been received by the packet before to determine the packet, by the data package transmission velocity and
A set grade is reduced higher than ack feedback velocities corresponding to the data package transmission velocity；
Sending module, it is additionally operable to feed back ack according to the ack feedback velocities after being downgraded.
Sending module, it is additionally operable to consult ack feedback systems with transmitting terminal, in association response reservation
Ack feedback systems are carried in field and are sent to transmitting terminal；
Or receiving module, it is additionally operable to consult with transmitting terminal the mode of ack feedbacks, what receiving end/sending end was sent is carried on
Beacon, Probe request, Probe response or association request reserved field in ack feedback
Mode.
By such scheme can it can be seen from the present invention provide after receiving terminal receives packet, using adapt to it is up
The feedback velocity of link-quality sends ack so that receiving terminal can have correctly received the ack of transmitting terminal feedback.So, ensure that
After receiving terminal receives packet in a wireless local area network, the ack of feedback can be properly received by transmitting terminal.
Brief description of the drawings
Fig. 1 is the timing diagram of prior art transmission packet；
The feeding back confirmation message transmission method flow chart of Fig. 2 WLANs provided in an embodiment of the present invention；
Fig. 3 is that ack is fed back to transmission by receiving terminal of the embodiment of the present invention using the feedback velocity for adapting to uplink quality
The method flow diagram at end；
Fig. 4 is the method flow diagram that transmitting terminal provided in an embodiment of the present invention receives feedback ack after data packet retransmission；
Fig. 5 is the embodiment of the present invention in Beacon, Probe request, Probe response, association
Request or the schematic diagram for increasing feedback ack in association response reserved field；
Fig. 6 is the feeding back confirmation message Transmission system structural representation of WLAN provided in an embodiment of the present invention；
Fig. 7 is the schematic diagram of feeding back confirmation message transmitting device structure one of WLAN provided in an embodiment of the present invention；
Fig. 8 is the schematic diagram of feeding back confirmation message transmitting device structure two of WLAN provided in an embodiment of the present invention.
Embodiment
For the objects, technical solutions and advantages of the present invention are more clearly understood, develop simultaneously embodiment referring to the drawings, right
The present invention is described in further detail.
From background technology as can be seen that in the current network environment of WLAN, access point is caused to be bundled into data
After work(is sent to terminal, the ack of terminal feedback can not be had correctly received by access point, and access point thinks that packet sends failure,
Packet is retransmitted, is the reason for the waste for causing link circuit resource：Because the downlink quality of WLAN is far longer than
Downlink quality, the transmission rate that the terminal as receiving terminal feeds back ack can not adapt to link-quality, cause as transmitting terminal
Access point cannot be correctly received ack.In order to overcome this problem, the present invention is sent using the feedback velocity for adapting to link-quality
Ack so that receiving terminal can have correctly received the ack of transmitting terminal feedback.
The feeding back confirmation message transmission method flow chart of Fig. 2 WLANs provided in an embodiment of the present invention, its specific step
Suddenly it is：
Step 201, transmitting terminal send packet to receiving terminal；
In this step, transmitting terminal is access point, and receiving terminal is terminal；
After step 202, receiving terminal receive packet, ack is fed back to using the ack feedback velocities for adapting to link-quality
Transmitting terminal；
Step 203, transmitting terminal are according to the transmission rate for sending packet and the ack feedback velocities calculating for adapting to link-quality
Ack time values are received, ack is received in reception ack time values；
In this step, it is prior art to calculate and receive ack time values, and reception ack time values can be NAV values；
In the present invention, in order to realize receiving terminal using adapt to link-quality ack feedback velocities ack is fed back into transmission
End, can take two ways to carry out, and one kind is static mode, and another kind is defined dynamical fashion, describes in detail individually below.
The static mode of mode one
Set data package transmission velocity corresponding with the ack feedback velocities for adapting to link-quality respectively in transmitting terminal and receiving terminal
Relation, after receiving terminal receives the packet of transmitting terminal transmission, determine that the transmission rate of packet is corresponding according to the corresponding relation
Adaptation link-quality ack feedback velocities, ack is sent using identified ack feedback velocities, transmitting terminal corresponding closes according to this
System, it is calculated and receives ack time values, fed back ack is received in reception ack time values.
In this mode, in order to ensure ack transmission reliability, compared to the corresponding relation shown in table 1, ack is reduced
Feedback velocity so that ack uses transmits ack than relatively low feedback velocity, adapts to the quality of access point, such as, be defined to
1Mbps or 6Mbps.It is less than the packet equal to 11Mbps for transmission rate, all uses ack anti-for 1Mbps feedback velocity
Feedback, 11Mbps packet is higher than for transmission rate, all uses ack to be fed back for 6Mbps feedback velocity, as shown in table 2, table
2 illustrate table for the ack feedback velocities and the corresponding relation of the transmission rate of transmission packet of the present invention：
Table 2
The Quasi dynamic mode of mode two
According to whether the information for having correctly received packet, the ack that receiving terminal real-time update adapts to uplink quality is anti-
Speed is presented, packet sending speed is specifically updated the data with adapting to the ack feedback velocity corresponding relations of uplink quality, in rear continued access
After receiving end receives the packet of transmitting terminal transmission, according to corresponding to the corresponding relation of the renewal determines the transmission rate of packet
The ack feedback velocities of uplink quality are adapted to, ack is sent using identified ack feedback velocities.
Fig. 3 is that ack is fed back to transmitting terminal by receiving terminal of the embodiment of the present invention using the feedback velocity for adapting to link-quality
Method flow diagram, in the method, the corresponding relation shown in table 1 is pre-set in receiving terminal, it is concretely comprised the following steps：
The packet that step 301, receiving terminal receiving end/sending end are sent；
In this step, receiving terminal is terminal, and transmitting terminal is access point；
Step 302, receiving terminal determine whether the packet is the packet retransmitted, if it is, performing step 303；If
It is no, perform step 306；
In this step, it is determined whether be that the packet retransmitted is prior art；
Step 303, receiving terminal are according to the sequence number of packet（SN）Determine whether to have been received by this before step 301
Packet, if it is, performing step 304；If not, perform step 306；
After the set corresponding relation of step 304, receiving terminal inquiry, determine corresponding to the transmission rate of received data packet
Ack feedback velocities, after the ack feedback velocities to be reduced to a set grade, using the ack feedback velocities after downgrading
Ack is fed back to transmitting terminal；
Step 305, receiving terminal renewal corresponding relation, by corresponding to the transmission rate of received data packet and higher than reception data
Ack feedback velocities corresponding to the transmission rate of bag reduce a set grade；
After the set corresponding relation of step 306, receiving terminal inquiry, determine corresponding to the transmission rate of received data packet
Ack feedback velocities, ack is fed back to transmitting terminal according to identified ack feedback velocity.
Herein, the multiple grades of adjustment ack feedback velocities are set in receiving terminal, according to set ack feedback velocities
Level adjustment ack feedback velocity.
Fig. 4 is the method flow diagram that transmitting terminal provided in an embodiment of the present invention receives feedback ack after data packet retransmission, its
Concretely comprise the following steps：
Step 401, transmitting terminal do not receive the feedback ack after transmitted packet, retransmit the packet；
Step 402, transmitting terminal are judged when sending the packet before, if ack association is fed back before properly resolving
Head is discussed, if it is, performing step 404；If it is not, then perform step 403；
In this step, the protocol header for feeding back ack is PLCP heads；
In this step, if feeding back ack protocol header before being resolved to, it can be inferred that receiving terminal once fed back
Ack, and received but do not parsed correctly by transmitting terminal；
Step 403, transmitting terminal the ack feedback velocities according to corresponding to the data package transmission velocity of setting, after calculating NAV values,
Again according to the ack of the feedbacks to be received such as the reception ack feedback time values calculated；
In this step, it is existing to be calculated according to ack feedback velocities and data package transmission velocity and receive ack feedback times value
Technology, reception ack feedback times value can be NAV values；
Step 404, transmitting terminal renewal corresponding relation, by corresponding to the transmission rate of received data packet and higher than reception data
Ack feedback velocities corresponding to the transmission rate of bag reduce a set grade；
Step 405, transmitting terminal calculate NAV according to the ack feedback velocities according to corresponding to the data package transmission velocity after renewal
Value, again according to the ack of the feedbacks to be received such as the reception ack feedback time values calculated.
According to the above, realize that ack is fed back to transmitting terminal by receiving terminal using the feedback velocity for adapting to link-quality, can
By including in a manner of three kinds, a kind of static mode for the present invention, a kind of Quasi dynamic mode for the present invention, also having a kind of to be existing
Technology pre-sets mode.At this moment, when sending packet, transmitting terminal and receiving terminal specifically use any mode, just need
Hold consultation solution.In the present invention, consultation and feedback ack mode can be in existing beacon frame（Beacon）, probe requests thereby
（Probe request）, detection request response（Probe response）, association request（association request）Or
Associate response（association response）In, by defining reserved field so that access point and terminal room negotiation ack are anti-
Present the mode of speed.Specifically, in Beacon, Probe request, Probe response, association
Request increases feedback ack mode as shown in figure 5, including member in association response reserved field
Element mark（Element ID）, instruction is subsequently feedback ack mode field；Length（Length）, indication field length；Feedback
Ack-mode（Ack Mode）, indicate selected feedback ack modes.By the reserved field, transmitting terminal or receiving terminal can
Notify to feed back ack modes used by opposite end.
Fig. 6 is the feeding back confirmation message Transmission system structural representation of WLAN provided in an embodiment of the present invention, is wrapped
Include：Receiving terminal and transmitting terminal, wherein,
Transmitting terminal, for sending packet to receiving terminal, according to the transmission rate for sending packet and adapt to link-quality
Ack feedback velocities calculate receive ack time values, receive ack in reception ack time values；
Receiving terminal, after received data packet, ack is fed back to by transmission using the ack feedback velocities for adapting to link-quality
End.
Within the system, transmitting terminal, it is additionally operable to set data package transmission velocity with adapting to the ack feedback velocities of link-quality
Corresponding relation, is determined to receive ack time values according to the corresponding relation, and receiving terminal feedback is received in ack time values receiving
ack；
Receiving terminal, it is additionally operable to set data package transmission velocity with adapting to the ack feedback velocity corresponding relations of link-quality, root
Ack feedback velocities corresponding to the transmission rate of received data packet are determined according to the corresponding relation, speed is fed back according to identified ack
Rate feeds back ack to transmitting terminal.
Within the system, transmitting terminal, it is additionally operable to set the corresponding relation of data package transmission velocity and ack feedback velocities, when
When transmitted packet is retransmits packet, it is determined that receiving before and having parsed feedback ack protocol header, then by the data
Packet sending speed and a grade set higher than ack feedback velocities reduction corresponding to the data package transmission velocity, calculating connect
Ack time values are received, the ack of receiving terminal feedback is received in this time value；Otherwise, then reception ack is determined according to the corresponding relation
Time value, the ack of receiving terminal feedback is received in this time value；
Receiving terminal, it is additionally operable to set the corresponding relation of data package transmission velocity and ack feedback velocities, when receiving packet
When, it is when retransmitting packet and having been received by the packet, by the data package transmission velocity and higher than this to determine the packet
It is anti-according to the ack after being downgraded after ack feedback velocities corresponding to data package transmission velocity reduce a set grade
Present Rate Feedback ack；Otherwise, then ack feedback velocities are determined according to corresponding relation, feeds back ack；
Within the system, receiving terminal is terminal, and transmitting terminal is access point.
Within the system, transmitting terminal, it is additionally operable to consult with receiving terminal the mode of ack feedbacks, the ack modes fed back is carried
Beacon, Probe request, Probe response or association request reserved field in notify to connect
Receiving end, or receive the ack feedback systems in association response reserved field；
Receiving terminal, be additionally operable to transmitting terminal consult ack feedback mode, receiving end/sending end send be carried on Beacon,
Ack feedback systems in Probe request, Probe response or association request reserved field, or
Ack feedback systems are carried in association response reserved field and are sent to transmitting terminal.
Fig. 7 is the schematic diagram of feeding back confirmation message transmitting device structure one of WLAN provided in an embodiment of the present invention,
As transmitting terminal, that is, access point, including：Sending module, setup module and receiving module, wherein,
Sending module, for sending packet to receiving terminal,
Setup module, for according to the transmission rate for sending packet and the ack feedback velocities calculating for adapting to link-quality
Receive ack time values；
Receiving module, for receiving ack in the reception ack time values that are set in setup module.
In the apparatus, setup module, it is additionally operable to set the ack of data package transmission velocity and adaptation uplink quality anti-
Speed corresponding relation is presented, is determined to receive ack time values according to the corresponding relation.
In the apparatus, sending module, it is additionally operable to send packet to retransmit packet；
Setup module, it is additionally operable to set the corresponding relation of data package transmission velocity and ack feedback velocities, confirms receiving module
Receive before and parsed feedback ack protocol header, then by the data package transmission velocity and higher than the data package transmission velocity
Corresponding ack feedback velocities reduce a set grade, calculate and receive ack time values, otherwise, true according to the corresponding relation
Surely ack time values are received.
In the apparatus, sending module, it is additionally operable to consult with receiving terminal the mode of ack feedbacks, the ack modes fed back is held
It is loaded in Beacon, Probe request, Probe response or association request reserved field and notifies
Receiving terminal；
Or receiving module, it is additionally operable to consult with receiving terminal the mode of ack feedbacks, receives in association
Ack feedback systems in response reserved field.
Fig. 8 is the schematic diagram of feeding back confirmation message transmitting device structure two of WLAN provided in an embodiment of the present invention,
As receiving terminal, receiving terminal can be terminal, including：Receiving module, setup module and sending module, wherein,
Receiving module, for received data packet；
Setup module, for setting using the ack feedback velocities for adapting to link-quality；
Ack is fed back to transmission by sending module, the feedback velocity of the adaptation link-quality for being set according to setup module
End.
In the apparatus, setup module, it is additionally operable to set data package transmission velocity with adapting to the ack feedback speed of link-quality
Rate corresponding relation；
Sending module, it is additionally operable to the ack according to corresponding to the corresponding relation determines the transmission rate of received data packet and feeds back
Speed, ack is fed back to transmitting terminal according to identified ack feedback velocities.
In the apparatus, setup module, it is additionally operable to set the corresponding relation of data package transmission velocity and ack feedback velocities,
Upon reception of the data packet, it is that when retransmitting packet and having been received by the packet, the packet is sent out to determine the packet
Transmission rate and a grade set higher than ack feedback velocities reduction corresponding to the data package transmission velocity；
Sending module, it is additionally operable to feed back ack according to the ack feedback velocities after being downgraded.
In the apparatus, sending module, it is additionally operable to consult with transmitting terminal the mode of ack feedbacks, in association
Ack feedback systems are carried in response reserved field and are sent to transmitting terminal；
Or receiving module, it is additionally operable to consult with transmitting terminal the mode of ack feedbacks, what receiving end/sending end was sent is carried on
Beacon, Probe request, Probe response or association request reserved field in ack feedback
Mode.
Preferred embodiment is lifted above, the object, technical solutions and advantages of the present invention is further described, institute
It should be understood that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not intended to limit the invention, it is all the present invention's
Spirit and principle within, all any modification, equivalent and improvement made etc., should be included in protection scope of the present invention it
It is interior.
Claims (9)
1. the feeding back confirmation message transmission method of a kind of WLAN, it is characterised in that this method includes：
After receiving terminal receives the packet of transmitting terminal transmission, ack is fed back to using the ack feedback velocities for adapting to link-quality
Transmitting terminal；
Data package transmission velocity is set with adapting to the ack feedback velocity corresponding relations of link-quality in receiving terminal, it is described using suitable
Answer the ack feedback velocities of link-quality that ack is fed back into transmitting terminal to be：
Receiving terminal adapts to the ack feedback velocities of link-quality according to corresponding to the corresponding relation determines the transmission rate of packet,
Ack is sent using identified ack feedback velocities；
It is described use adapt to link-quality ack feedback velocities by ack feed back to transmitting terminal for：
Upon reception of the data packet, it is when retransmitting packet and having been received by the packet before, by this to determine the packet
After data package transmission velocity and a grade set higher than ack feedback velocities reduction corresponding to the data package transmission velocity,
Ack is fed back according to the ack feedback velocities after being downgraded；Otherwise, then ack feedback velocities are determined according to corresponding relation, fed back
ack。
2. the method as described in claim 1, it is characterised in that before the process per se, in addition to：
Receiving terminal consults ack feedback systems with transmitting terminal, and what receiving end/sending end was sent is carried on beacon frame Beacon, probe requests thereby
Probe request, detection request response Probe response or association request association request reserved word
Ack feedback systems in section, or ack feedback systems are carried in association response association response reserved field
It is sent to transmitting terminal.
3. the feeding back confirmation message transmission method of a kind of WLAN, it is characterised in that this method includes：
Transmitting terminal is according to the transmission rate for sending packet and the ack feedback velocities calculating reception ack times for adapting to link-quality
Value, ack is received in reception ack time values；
Data package transmission velocity is set with adapting to the ack feedback velocity corresponding relations of link-quality in transmitting terminal,
The calculating receives ack time values：
According to the corresponding relation, it is calculated and receives ack time values；
The calculating receives ack time values：
Transmitting terminal sets the corresponding relation of data package transmission velocity and ack feedback velocities, when transmitted packet is re-transmission number
During according to bag, it is determined that receiving before and having parsed feedback ack protocol header, then by the data package transmission velocity and higher than the data
Ack feedback velocities corresponding to packet sending speed reduce a set grade, calculate and receive ack time values；Otherwise, then basis
The corresponding relation determines to receive ack time values.
A kind of 4. feeding back confirmation message Transmission system of WLAN, it is characterised in that including：Receiving terminal and transmitting terminal, its
In,
Transmitting terminal, for sending packet to receiving terminal, according to the transmission rate and the ack of adaptation link-quality for sending packet
Feedback velocity, which calculates, receives ack time values, and ack is received in reception ack time values；
Receiving terminal, after received data packet, ack is fed back to by transmitting terminal using the ack feedback velocities for adapting to link-quality；
Transmitting terminal, it is additionally operable to set data package transmission velocity with adapting to the ack feedback velocity corresponding relations of link-quality, according to this
Corresponding relation determines reception ack time values, is receiving the ack of reception receiving terminal feedback in ack time values；
Receiving terminal, it is additionally operable to set data package transmission velocity with adapting to the ack feedback velocity corresponding relations of link-quality, according to this
Corresponding relation determines ack feedback velocities corresponding to the transmission rate of received data packet, anti-according to identified ack feedback velocities
Ack is presented to transmitting terminal；
Transmitting terminal, it is additionally operable to when transmitted packet is retransmits packet, it is determined that receiving before and having parsed feedback ack
Protocol header, then by the data package transmission velocity and higher than corresponding to the data package transmission velocity ack feedback velocities reduce set by
The grade put, calculate and receive ack time values, the ack of receiving terminal feedback is received in this time value；Otherwise, then basis should
Corresponding relation determines reception ack time values, and the ack of receiving terminal feedback is received in the time value；
Receiving terminal, it is additionally operable to upon reception of the data packet, it is to retransmit packet and have been received by this before to determine the packet
During packet, by the data package transmission velocity and higher than set by ack feedback velocities reduction corresponding to the data package transmission velocity
A grade after, ack is fed back according to the ack feedback velocities after being downgraded；Otherwise, then ack is determined according to corresponding relation
Feedback velocity, feed back ack.
5. system as claimed in claim 4, it is characterised in that
Transmitting terminal, it is additionally operable to consult ack feedback systems with receiving terminal, ack feedback systems is carried on Beacon, Probe
Receiving terminal is notified in request, Probe response or association request reserved field, or is received
Ack feedback systems in association response reserved field；
Receiving terminal, it is additionally operable to consult ack feedback systems with transmitting terminal, what receiving end/sending end was sent is carried on Beacon, Probe
Ack feedback systems in request, Probe response or association request reserved field, or
Ack feedback systems are carried in association response reserved field and are sent to transmitting terminal.
A kind of 6. feeding back confirmation message transmitting device of WLAN, it is characterised in that including：Sending module, setup module
And receiving module, wherein,
Sending module, for sending packet to receiving terminal,
Setup module, for according to the transmission rate for sending packet and the ack feedback velocities calculating reception for adapting to link-quality
Ack time values；
Receiving module, for receiving ack in the reception ack time values that are set in setup module；
Setup module, it is additionally operable to set data package transmission velocity with adapting to the ack feedback velocity corresponding relations of link-quality, according to
The corresponding relation determines to receive ack time values；
Sending module, it is additionally operable to send packet to retransmit packet；
Setup module, it is additionally operable to receive and parsed before confirming receiving module feedback ack protocol header, then by the packet
Transmission rate and a grade set higher than ack feedback velocities reduction corresponding to the data package transmission velocity, calculate and receive
Ack time values, otherwise, determined to receive ack time values according to the corresponding relation.
7. device as claimed in claim 6, it is characterised in that
Sending module, it is additionally operable to consult ack feedback systems with receiving terminal, ack feedback systems is carried on Beacon, Probe
Receiving terminal is notified in request, Probe response or association request reserved field；
Or receiving module, it is additionally operable to consult ack feedback systems with receiving terminal, receives association response's
Ack feedback systems in reserved field.
A kind of 8. feeding back confirmation message transmitting device of WLAN, it is characterised in that including：Receiving module, setup module
And sending module, wherein,
Receiving module, for received data packet；
Setup module, for setting using the ack feedback velocities for adapting to link-quality；
Ack is fed back to transmitting terminal by sending module, the feedback velocity of the adaptation link-quality for being set according to setup module；
Setup module, it is additionally operable to set data package transmission velocity with adapting to the ack feedback velocity corresponding relations of link-quality；
Sending module, the ack feedback velocities according to corresponding to the corresponding relation determines the transmission rate of received data packet are additionally operable to,
Ack is fed back to transmitting terminal according to identified ack feedback velocities；
Setup module, it is additionally operable to upon reception of the data packet, it is to retransmit packet and have been received by before to determine the packet
During the packet, by the data package transmission velocity and higher than set by ack feedback velocities reduction corresponding to the data package transmission velocity
The grade put；
Sending module, it is additionally operable to feed back ack according to the ack feedback velocities after being downgraded.
9. device as claimed in claim 8, it is characterised in that
Sending module, it is additionally operable to consult ack feedback systems with transmitting terminal, in association response reserved field
Carrying ack feedback systems are sent to transmitting terminal；
Or receiving module, it is additionally operable to consult with transmitting terminal the mode of ack feedbacks, what receiving end/sending end was sent is carried on
Beacon, Probe request, Probe response or association request reserved field in ack feedback
Mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310287925.4A CN104283648B (en) | 2013-07-10 | 2013-07-10 | Feeding back confirmation message transmission method, the apparatus and system of WLAN |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310287925.4A CN104283648B (en) | 2013-07-10 | 2013-07-10 | Feeding back confirmation message transmission method, the apparatus and system of WLAN |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104283648A CN104283648A (en) | 2015-01-14 |
| CN104283648B true CN104283648B (en) | 2018-02-23 |
Family
ID=52258167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310287925.4A Active CN104283648B (en) | 2013-07-10 | 2013-07-10 | Feeding back confirmation message transmission method, the apparatus and system of WLAN |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104283648B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107534512B (en) * | 2015-03-05 | 2020-09-18 | 瑞典爱立信有限公司 | Multi-level ACK to define decoding margin |
| CN110224803B (en) * | 2019-07-10 | 2021-11-23 | 济宁微晶电子科技有限公司 | LoRa communication method for realizing beacon autonomous discovery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1407746A (en) * | 2001-09-06 | 2003-04-02 | 华为技术有限公司 | Self adaptable adjusting method for modulating code mode |
| EP1309121A1 (en) * | 2001-11-02 | 2003-05-07 | Lucent Technologies Inc. | Variable rate channel quality feedback in a wireless communication system |
| CN101621362A (en) * | 2008-07-04 | 2010-01-06 | 上海无线通信研究中心 | Method for improving utilization rate of wireless personal network channel |
-
2013
- 2013-07-10 CN CN201310287925.4A patent/CN104283648B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1407746A (en) * | 2001-09-06 | 2003-04-02 | 华为技术有限公司 | Self adaptable adjusting method for modulating code mode |
| EP1309121A1 (en) * | 2001-11-02 | 2003-05-07 | Lucent Technologies Inc. | Variable rate channel quality feedback in a wireless communication system |
| CN101621362A (en) * | 2008-07-04 | 2010-01-06 | 上海无线通信研究中心 | Method for improving utilization rate of wireless personal network channel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104283648A (en) | 2015-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8787348B2 (en) | Methods and systems for providing reliable multicast service in a WLAN system | |
| US7773524B2 (en) | Apparatus and method for using automatic repeat request scheme in a broadband wireless access communication system | |
| EP3136780B1 (en) | Method for requesting radio resources in a mobile communications system | |
| CA2603975C (en) | Method and system for improving responsiveness in exchanging frames in a wireless local area network | |
| US8000256B2 (en) | Method and apparatus for data transmission of radio link control layer in a mobile communication system | |
| CN102387009B (en) | Uplink transmission method of radio link control layer and evolutionary node B | |
| CN104363080B (en) | Stop the method and transmitter unit of risk for reducing transmission | |
| JP2005252897A (en) | Communication device, communication method, and communication system | |
| CN104852777B (en) | Multiple target convergence transmission method and relevant device and system | |
| WO2013135196A1 (en) | Method and system for data packet transmission and sending terminal equipment and receiving terminal equipment | |
| WO2012089034A1 (en) | Method and apparatus for determining harq mode | |
| KR20170020441A (en) | Radio resource scheduling method and apparatus | |
| KR20060124379A (en) | Method for reporting packet received result in a mobile communication system | |
| US8780733B2 (en) | Radio communication system for supporting hybrid automatic repeat request (HARQ) and data transmission method | |
| US20060227743A1 (en) | Packet communication device and packet communication method | |
| WO2010086156A1 (en) | Efficient packet data unit transmissions and re-transmissions involving a relay node | |
| US10693597B2 (en) | Method and apparatus for transmitting status report for receiver | |
| US9306710B2 (en) | RCC connection establishment method and apparatus in communication system background of the invention | |
| CN104521167A (en) | Data transmission method, apparatus, base station and user equipment | |
| WO2009102167A2 (en) | Method and apparatus for transmitting and receiving data in mobile communication system | |
| WO2013135015A1 (en) | Enhanced uplink coverage method, device and base station | |
| CN104283648B (en) | Feeding back confirmation message transmission method, the apparatus and system of WLAN | |
| WO2007045172A1 (en) | Wireless data transmission method, transmitting system and receiving system | |
| WO2007121635A1 (en) | Retransmission method of the control data unit of the wireless link control protocol in the acknowledgment mode | |
| US8149768B2 (en) | Method of transmitting data in mobile communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |