CN103269502B - A kind of method and device automatically adjusted without line rate - Google Patents
A kind of method and device automatically adjusted without line rate Download PDFInfo
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- CN103269502B CN103269502B CN201310156011.4A CN201310156011A CN103269502B CN 103269502 B CN103269502 B CN 103269502B CN 201310156011 A CN201310156011 A CN 201310156011A CN 103269502 B CN103269502 B CN 103269502B
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Abstract
The present invention provides the device of a kind of automatic adjusting method without line rate and correspondence, it is applied on the radio reception device by self wireless uplink mouth access network, for determining the actual transmission rate of the wireless traffic module of wireless device, the method includes: step A, by wireless uplink mouth send message time according to preset select speed rule for this message selection one transmission rate；Step B, before the transmission rate currently selected is defined as actual transmission rate, judge whether wireless device is under concealed nodes pattern, if it is it is that described wireless uplink mouth enables RTS function, otherwise the transmission rate currently selected is defined as actual transmission rate.The present invention is by confirming that the conflict serious problems that RTS function overcomes concealed nodes to cause the most dynamically are opened in the existence of concealed nodes, it is possible to promotes the adaptation ability of radio reception device on the premise of compatibility standard technology, improves the speed of its multi-upstream access.
Description
Technical field
The present invention relates to data communication technology field, particularly relate to a kind of application on the wireless device wireless
The method and device that speed adjusts automatically.
Background technology
Outdoor version CPE (Customer Premise Equipment, user side equipment) equipment be for
The outdoor version broadband access terminal device that operator's WLAN broadband access market is released, this equipment is extensive
It is deployed in cable broadband cannot cover, but exists in user's scene of broadband access demand.At this width
Band accesses in application scenarios, the first equipment for surfing the net (such as PC or home router etc.) of actual user
Being linked on Wireless outdoor type cpe device by wired mode, the most wireless cpe device passes through nothing again
Line up-link is correlated with operator deployment WAP (Access Point, AP) in this region
Connection, thus be finally linked in Internet network, provide broadband inserting service for actual user.
Refer to the network environment shown in Fig. 1, wireless cpe device here can provide wired radio chains
Data forwarding capability between road, it would be preferable to support enter between user's wire link and its radio up-line
The function that row data forward, thus the equipment for surfing the net for user side provides the wireless uplink by cpe device
Link accesses the service of Internet resource.Under this kind of network environment, operator provides the user width
The key technology of leased line service is to provide Internet network access service by wireless.To above-mentioned
Radio Access Network scheme when implementing, the main technical scheme used has two kinds.
The first scheme: wireless access technology uses the 802.11 series standard technical schemes that IEEE proposes, nothing
Line cpe device is associated with wireless aps in the way of wireless client, all wireless in wireless network
Equipment (including wireless cpe device and wireless AP devices) by link intercept/collision detection by the way of obtain
The right to use to wireless link.But this technical scheme exists a kind of natural defect there may be hiding joint
Point problem.Between each wireless device in Radio Access Network distant, mutually form concealed nodes
Time, the collision rate of wireless link can be increased so that packet loss when wireless device sends data is substantially improved,
Wireless device there will be reduction of speed phenomenon, if reduction of speed all occurs in cpe devices the most in whole wireless network
Phenomenon, then can be substantially reduced the handling capacity of whole wireless network, and the online affecting user is experienced.
First scheme: wireless access technology uses off-gauge 802.11 technical schemes, wireless CPE
Equipment is still associated with wireless aps in the way of wireless client, but in wireless network institute with or without
Line equipment (including wireless cpe device and wireless AP devices) intercepts/collision detection not by link
Mode obtains the right to use to wireless link, but obtains by the way of time division multiplex (TDMA)
Take the right to use to wireless link, in this way, AP carry out deciding a certain as controlling end
Moment is occupied wireless link by which wireless cpe device and is carried out data transmission.
But, the major defect of first scheme is the use of nonstandard protocol, and each vendor equipment is difficult to mutually
Compatible mutually, range is limited to significantly.If the use program, the wireless AP devices in wireless network
With the equipment that wireless cpe device will use same manufacturer, therefore test in interconnecting property and docking
There is bigger restriction in aspect.
Summary of the invention
In view of this, the present invention provides a kind of without line rate automatic regulating apparatus, is applied to by self nothing
On the radio reception device of line up going port access network, for determining the wireless traffic module of wireless device
Actual transmission rate, this device at least includes: preposition select at speed unit, preposition judging unit and pattern
Reason unit, wherein:
Preposition select speed unit, for when sending message by wireless uplink mouth according to preset to select speed regular
A transmission rate is selected for this message；
Preposition judging unit, for judging that whether the transmission rate currently selected is less than last actual transmission
Speed, processes if it is, proceed to mode processing units, otherwise the transmission rate currently selected is determined
For actual transmission rate and preserve this actual transmission rate；
Mode processing units, for before being defined as actual transmission rate by the transmission rate currently selected
Judge whether wireless device is under concealed nodes pattern, be if it is that described wireless uplink mouth enables
RTS function, is otherwise defined as the transmission rate currently selected actual transmission rate and preserves this actual
Transmission rate.
The present invention also provides for a kind of without line rate automatic adjusting method, is applied to by self wireless uplink mouth
On the radio reception device of access network, for determining the actual transmission of the wireless traffic module of wireless device
Speed, the method includes:
Step A, by wireless uplink mouth send message time according to preset select speed rule for this message choosing
Select a transmission rate；
Whether step B, the current transmission rate selected of judgement be less than the use of wireless traffic module last time
Actual transmission rate, if it is, proceed to step C, is otherwise defined as the transmission rate currently selected
Actual transmission rate also preserves this actual transmission rate；
Step C, before the transmission rate currently selected is defined as actual transmission rate, judge wireless setting
For whether being under concealed nodes pattern, if it is it is that described wireless uplink mouth enables RTS function, no
Then the transmission rate currently selected is defined as actual transmission rate and preserves this actual transmission rate.
The present invention is by confirming that the existence of concealed nodes is the most dynamically opened RTS function and overcome hiding joint
The conflict serious problems that point causes, it is possible to ideally promote wireless access on the premise of compatibility standard technology and set
Standby adaptation ability, improves the speed of its multi-upstream access.
Accompanying drawing explanation
Fig. 1 is a kind of networking schematic diagram typically utilizing CPE to realize broadband access in prior art.
Fig. 2 is hard without line rate automatic regulating apparatus logical structure and operation in one embodiment of the present invention
Part environment schematic.
Fig. 3 is the process chart in one embodiment of the present invention without line rate automatic adjusting method.
Fig. 4 is the process chart determining concealed nodes pattern in one embodiment of the present invention.
Detailed description of the invention
The present invention provides a kind of new CPE design.Refer to the hardware structure of CPE in Fig. 2,
Under such framework, implemented in software as a example by, the present invention provide a kind of be applied on CPE without linear speed
Rate automatic regulating apparatus, what this device can be regarded as being formed during the programmed instruction in CPU running memory patrols
Collect device.Refer to Fig. 2, this includes preposition selecting speed unit, preposition sentencing without line rate automatic regulating apparatus
Disconnected unit, mode processing units, rearmounted judging unit, benchmark unit and mode determination.
Please further refer to Fig. 3, preparation and running before this plant running include the steps.
Step 101, speed set that benchmark unit is supported according to CPE and the service being pre-configured with are held
Promise speed determines minimum transmission rate, and wherein this minimum transmission rate is more than or equal to described service promise speed.
In order to the compatibility promoted between AP equipment, the wireless traffic module of current cpe device
(the most one or more chip) generally supports multiple 802.11 series standards, such as support 802.11g,
The multiple-working mode such as 802.11n HT20,802.11n HT40.Have again many under the most each mode of operation
The individual speed that can use, such as under 802.11n series standard, without line rate can support 108Mbps,
The speed of multiple grade such as 162Mbps, 216Mbps, 243Mbps, 270Mbps, is using MIMO
During technology, the highest support 600Mbps.
On the other hand, operator needs to provide its committed rate serviced to actual user, such as
10Mbps.This speed is the speed that operator needs to be ensured at network links, it is clear that CPE
Node is as the node of carrier network, and the transfer rate between itself and AP cannot be below 10Mbps, no
The most just cannot realize service promise speed.Therefore in preferred mode, should be according to clothes on cpe device
The needs (service promise speed) of business user and the practical situation of self (supporting which speed grade)
Determine a minimum transmission rate, namely send the upstream rate of message to AP, thus avoid CPE
Become the rate limit node in broadband access.Certainly this step it is not necessary to, it is contemplated that operator
The broadband service provided at present is far smaller than most of speed of the standards such as 802.11n, and therefore CPE is minimum
Transmission rate can also static state setting.Such as operator provides the highest broadband inserting service in this region
Speed is 20Mbps, then can select closest and bigger than a 20Mbps speed from speed grade
For minimum transmission rate.In fact the speed that at present major part broadband inserting service is promised to undertake be all up-downgoing not
Symmetrical, its upstream rate will be typically less than 10Mbps, therefore minimum transmission rate described in static state setting
Also it is feasible.
Step 102, when CPE needs to send message to AP, preposition speed unit of selecting is according to the rule preset
Then select a transmission rate；
The equipment such as CPE and AP, when sending message, the most first complete form conversion etc. at software view
After Message processing, generally also need to select a transmission rate into this message current.Then message quilt
Send in bottom hardware caching, wait until the when that this message being scheduled for, the wireless traffic module (ratio of bottom
Such as radio frequency chip etc.) this message can be sent according to the transmission rate selected before.There is a lot of CPE at present
And the wireless device such as AP all achieves transmission rate and selects mechanism, select the rule of transmission rate the most not
To the greatest extent the most identical, those of ordinary skill in the art comprehensively actual application can need to refer to prior art and realize.
Step 103, preposition judging unit judges that the current transmission rate selected is actual less than last
Transmission rate；If going to step 104, otherwise the transmission rate currently selected is defined as actual transmission
Speed also preserves；
Step 104, mode processing units judges whether current radio environment is in concealed nodes pattern, as
Fruit is to go to step 105, otherwise the transmission rate currently selected is defined as actual transmission rate and preserves；
Step 105, mode processing units is opened the RTS function of wireless uplink mouth and goes to step 106；
Step 106, rearmounted judging unit judges whether the current transmission rate selected sends speed less than minimum
Rate, if being defined as the actual transmission rate of wireless traffic module and by this speed by this minimum transmission rate
Rate preserves, and otherwise the transmission rate currently selected is defined as actual transmission rate and preserves.
As it was previously stated, CPU needs to inform corresponding the sending out of wireless traffic module sending datagram when
Transmission rate, it is assumed that the preposition actual transmission speed selecting the transmission rate ratio last time use that speed unit currently selects
Rate (initial value can be defaulted as described minimum transmission rate) higher words, then explanation affects transmission rate
Negative factor alleviate, the wireless environment residing for CPE improves in other words.On the other hand, as
Really conditions permit, CPU would generally use as possible higher speed to send message, if the most currently selected
The actual transmission rate that the transmission rate selected used than the last time is bigger, then use the current speed selected
Sending message is acceptable, now can skip follow-up flow process and directly use the transmission rate chosen
Inform wireless traffic module.
If the preposition speed transmission rate that arrives of Unit selection of selecting is less than last actually used transmission rate,
Then explanation wireless environment may get worse with.Now need to judge that this situation is because which kind of is former on earth
Because of cause, in optimal way of the present invention, mode determination first determines whether CPE is in and hides joint
Dot pattern, say, that judge whether there is concealed nodes in the wireless environment at CPE place.If there is
Concealed nodes then illustrates conflict to be likely to constantly to aggravate, and if there is no concealed nodes, then explanation is temporary
Time interference or other node upstream data burst cause, can continue with.At concealed nodes mould
Under formula, described mode processing units actively enables the RTS function of CPE.When enabling RTS, permissible
Specify some parameters, such as be more than or equal to the enable RTS function of 64 bytes only for message length.
After enabling RTS function, CPE can first send a RTS frame (the shortest) before sending message
Fight for the right being sent this message current by wireless link to AP.CTS frame is received (right at CPE
The response of RTS, represents and fights for successfully) before, it cannot send this message current.Existing
In actual wireless network, the wireless device of the overwhelming majority closes RTS function the most statically.The present invention
Optimal way is also switched off this function in the case of acquiescence, only determine there is concealed nodes time, from
Dynamic enabling sends RTS function, when there is concealed nodes, enabling RTS function and can significantly reduce whole
Message collisions rate in individual wireless network, the transmission rate improving wireless uplink mouth sends the one-tenth of message in other words
Power.And when there is not concealed nodes, the present invention can be automatically switched off RTS function, because now RTS
The unlatching of function sends and does not has a remarkable effect improving message, but introduce bandwidth take expense.
In the case of RTS function is opened, if default ensures the experience of customer access network
Minimum transmission rate, the most now needs whether the relatively more current transmission rate selected is less than minimum transmission rate,
If it is use minimum transmission rate as actual transmission rate to ensure Consumer's Experience；Otherwise use and work as
The transmission rate of front selection is as actual transmission rate and preserves this actual transmission rate.Determining transmission
The required actual transmission rate used of current message, CPU can be using this actual transmission rate as message
One processing parameter is handed down to wireless traffic module.
In currently preferred mode, the unlatching of RTS depends on whether CPE is in concealed nodes mould
Formula.Concealed nodes pattern can be with manual static configuration, it is also possible to dynamically detect.In preferred mode,
Described automatic regulating apparatus without line rate farther includes mode determination, and it is mainly used in by as follows
Step judges whether CPE is in concealed nodes pattern.
Step 201, obtains current signal quality parameter, and judges whether signal quality deteriorates into default door
Limit, if it is determines that CPE is under concealed nodes pattern；Otherwise go to step 202；
Step 202, the message obtaining current wireless up going port sends success rate and message successful receiving rate,
And judge whether described successful receiving rate and the difference sending success rate reach predetermined threshold value, the most really
Determine CPE and be in concealed nodes pattern, otherwise determine that CPE is in non-concealed node mode and goes to step 203.
Step 203, it is judged that whether RTS function opens, if closing RTS function, otherwise terminates this
Secondary handling process.
Mode determination can be periodically executed step 201 and step 202 judges whether CPE is in
Concealed nodes pattern, and save as a parameter, such as set a mark in the table entry
Position, 1 mark is in concealed nodes pattern, 0 mark non-concealed node mode.So mode processing units is just
Can get the most whether CPE is under concealed nodes pattern easily.
For step 201, itself it is not necessary to, but first judge from signal quality aspect
There is more preferable reasonability.Assume that current signal quality deteriorates into certain thresholding and causes it to can not meet message
The needs of transmission rate, are now possible as what concealed nodes caused, it is also possible to external disturbance is drawn
Rising, also cannot determine whether to there is not stronger external disturbance even if there is concealed nodes.Therefore, excellent
The scheme of choosing is defaulted as being under concealed nodes pattern, attempts opening RTS function and go to improve signal
Quality.If contrary signal quality parameter (such as signal to noise ratio parameter) has met requirement, but message
Send success rate and be significantly less than successful receiving rate, then there is concealed nodes in explanation.Because it is (right that AP sends
Should receive in CPE) send with CPE and there is obvious gap and then illustrate it is not that external disturbance causes, no
Then AP sends and should receive roughly the same interference with both CPE transmissions, the most substantially may determine that
The decline of CPE transmission success rate is because in wireless network existing concealed nodes, i.e. CPE and is in hiding joint
Under dot pattern.
The present invention can be determined by concealed nodes pattern and open RTS function accordingly, can effectively alleviate
Realize concealed nodes in wireless network environment and cause conflict serious problems.For prior art,
Not using privately owned agreement, intercommunity is the best, is suitable for business widely and uses.In preferably side
In formula, and can make whole in conjunction with parameters such as last actually used speed and minimum transmission rates
Realize process more reasonable, it is judged that the execution efficiency of process is higher, it is judged that result is more reasonable, for soft
For part implementation, practical significance is the most prominent.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. done, should be included in
Within the scope of protection of the invention.
Claims (12)
1., without a line rate automatic regulating apparatus, it is applied to by self wireless uplink mouth access network
On radio reception device, for determining the actual transmission rate of the wireless traffic module of wireless device, this dress
Put and at least include: preposition select speed unit, preposition judging unit and mode processing units, it is characterised in that:
Preposition select speed unit, for when sending message by wireless uplink mouth according to preset to select speed regular
A transmission rate is selected for this message；
Preposition judging unit, for judging that whether the transmission rate currently selected is less than last actual transmission
Speed, processes if it is, proceed to mode processing units, otherwise the transmission rate currently selected is determined
For actual transmission rate and preserve this actual transmission rate；
Mode processing units, for before being defined as actual transmission rate by the transmission rate currently selected
Judge whether wireless device is under concealed nodes pattern, be if it is that described wireless uplink mouth enables
RTS function, is otherwise defined as the transmission rate currently selected actual transmission rate and preserves this actual
Transmission rate.
2. device as claimed in claim 1, it is characterised in that also include:
Rearmounted judging unit, continues to judge current selection after enabling RTS function at mode processing units
Transmission rate whether less than the internal minimum transmission rate preserved of wireless device, if it is that this is minimum
Transmission rate is defined as actual transmission rate and preserves this actual transmission rate, otherwise by sending out of currently selecting
Transmission rate is defined as actual transmission rate and preserves this actual transmission rate.
3. device as claimed in claim 2, it is characterised in that: also include:
Benchmark unit, for according to the speed set of radio reception device support and be pre-configured with
Service promise speed determines minimum transmission rate, and wherein this minimum transmission rate is held more than or equal to described service
Promise speed.
4. device as claimed in claim 1, it is characterised in that: also include:
Mode determination, for periodically judging whether radio reception device is under concealed nodes pattern,
Its judge process includes: judge radio reception device receive message success rate with send message success rate it
Between difference whether reach predetermined threshold value, if it is determine that radio reception device is in concealed nodes pattern
Under, otherwise determine that radio reception device is under non-concealed node mode and incites somebody to action when RTS function enables
RTS function goes to enable.
5. device as claimed in claim 4, it is characterised in that: described mode determination is used further
In, first judge whether the radio signal quality of radio reception device deteriorates into pre-determined threshold, the most really
Determine radio reception device to be under concealed nodes pattern；Otherwise continue to judge that radio reception device receives message
Success rate and the difference sent between message success rate whether reach predetermined threshold value；If it is nothing is determined
Line access device is under concealed nodes pattern, otherwise determines that radio reception device is in non-concealed node mould
Under formula.
6. device as claimed in claim 1, it is characterised in that described radio reception device is wireless end
End equipment CPE.
7., without a line rate automatic adjusting method, it is applied to by self wireless uplink mouth access network
On radio reception device, for determining the actual transmission rate of the wireless traffic module of wireless device, it is special
Levying and be, the method includes:
Step A, by wireless uplink mouth send message time according to preset select speed rule for this message choosing
Select a transmission rate；
Whether step B, the current transmission rate selected of judgement be less than the use of wireless traffic module last time
Actual transmission rate, if it is, proceed to step C, is otherwise defined as the transmission rate currently selected
Actual transmission rate also preserves this actual transmission rate；
Step C, before the transmission rate currently selected is defined as actual transmission rate, judge wireless setting
For whether being under concealed nodes pattern, if it is it is that described wireless uplink mouth enables RTS function, no
Then the transmission rate currently selected is defined as actual transmission rate and preserves this actual transmission rate.
8. method as claimed in claim 7, it is characterised in that also include:
Whether step D, the transmission rate that continuation judgement currently selects after enabling RTS function be less than wireless
The minimum transmission rate that device interior preserves, is if it is defined as actual transmission by this minimum transmission rate
Speed also preserves this actual transmission rate, and the transmission rate currently selected otherwise is defined as actual transmission speed
Rate also preserves this actual transmission rate.
9. method as claimed in claim 8, it is characterised in that: also include:
Step E, according to the speed set of radio reception device support and the service promise speed that is pre-configured with
Rate determines minimum transmission rate, and wherein this minimum transmission rate is more than or equal to described service promise speed.
10. method as claimed in claim 7, it is characterised in that: also include:
Step F, periodically judge whether radio reception device is under concealed nodes pattern, its judge process
Including: judge that the difference that radio reception device receives between the success rate of message and transmission message success rate is
No reach predetermined threshold value, if it is determine that radio reception device is under concealed nodes pattern, the most really
Determine radio reception device to be under non-concealed node mode and RTS function gone when RTS function enables
Enable.
11. methods as claimed in claim 10, it is characterised in that: described step F farther includes:
First judge whether the radio signal quality of radio reception device deteriorates into pre-determined threshold, if it is determine nothing
Line access device is under concealed nodes pattern；Otherwise continue to judge the one-tenth that radio reception device receives message
Whether power and the difference sent between message success rate reach predetermined threshold value；If it is wireless connecing is determined
Enter equipment to be under concealed nodes pattern, otherwise determine that radio reception device is under non-concealed node mode.
12. methods as claimed in claim 7, it is characterised in that described radio reception device is wireless
Terminal unit CPE.
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| CN103997755B (en) * | 2014-04-21 | 2017-06-16 | 深圳市蜂联科技有限公司 | Wireless device signal transmission method and its device |
| US9992681B2 (en) * | 2015-08-07 | 2018-06-05 | Qualcomm Incorporated | Subsystem for authorization and activation of features |
| CN109803327B (en) * | 2017-11-16 | 2020-11-17 | 华为技术有限公司 | Communication method and device |
| CN109951885B (en) * | 2017-12-21 | 2021-06-15 | 深圳Tcl新技术有限公司 | Method for automatically switching wireless channel bandwidth mode, mobile terminal and storage medium |
| CN114363965A (en) * | 2021-12-31 | 2022-04-15 | 展讯半导体(成都)有限公司 | A rate set update method and device thereof |
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