CN1957624A - Radio resource management in wireless local area networks - Google Patents
Radio resource management in wireless local area networks Download PDFInfo
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Abstract
A method for radio resource management (RRM) in a wireless local area network (WLAN) having an access point and a station begins by obtaining a first group of parameters from a current traffic channel. Measurements from all available channels are taken for a second group of parameters. The radio resources of the WLAN are autonomously managed by selectively invoking at least one RRM algorithm that uses at least one parameter. A RRM algorithm may be invoked based upon results produced by a previously executed RRM algorithm, whereby RRM algorithms may be continuously invoked such that the radio resources are autonomously managed.
Description
Technical field
The method and system of the RRM of the relevant WLAN that the present invention is total (RRM) specifically, are the RRM programs of relevant self-configuration one network.
Background technology
Wireless communication system is widely known by the people in this technical field.Generally speaking, these systems are included in the communication platform of mutual emission and reception wireless communication signals.The type of viewing system and deciding, normally following two classes of communication platform one of them: base station or wireless transmission/receive unit (WTRUs), it comprises mobile unit.
In this manual, the non-limitation of term " base station " comprises a base station, a B node, a site controller (site controller), an access point or puts for WTRUs provides other type wireless environment of the radio access of a network relevant with this base station tipping that is situated between.
In this manual, the non-limitation of term " WTRU " comprises user's equipment, a mobile radio station, is fixed or the device of moving user unit, a calling set or any type that other can operate in a wireless environment.WTRUs comprises personal communicator, such as phone, picture telephone and the networking telephone (Internet ready phone) that is connected with network.In addition, WTRUs also comprises the Portable personal computing device, for example possesses the PDAs and the notebook of the radio modem that similar network capabilities is arranged.The WTRUs that can be carried or can otherwise change the position is called as mobile unit.
Generally speaking, provide a network of base station, wherein each base station can carry out the radio communication of simultaneity with the WTRUs through suitable configuration.Have some WTRUs by configuration for directly carrying out radio communication each other, that is not via a base station relaying by a network.This is commonly called point to point wireless communication.WTRUs can be to be applicable in the multiple network that possesses network and point-to-point communication ability by configuration.
A kind of wireless system that is called as WLAN (WLAN) can be by configuration for carrying out radio communication to the WTRUs that is equipped with the WLAN modulator-demodulator and these WTRUs also can carry out point-to-point communication to the WTRUs of similar outfit.In a WLAN, a WTRU is called as a platform and a base station is called as an access point.
Existing two kinds of main flow modes are carried out radio communication in WLANs and other network: an infrastructure mode and an ad hoc pattern.In infrastructure mode, WTRUs carries out radio communication via a base station and a network infrastructure of being used as access point.These communications are coordinated and synchronization by this base station.This configuration also is called as infrastructure service set (BSS) in the WLAN background.With respect to this infrastructure mode, ad hoc pattern is not used network infrastructure.Ad hoc pattern is with the point-to-point communication running and be called as one " Independent B SS ".
The one universal WLAN environment that possesses one or more WLAN access points (that is base station) is the standard construction according to IEEE 802.11 families.Typical case's application of this type systematic comprises focus (for example airport), family uses, reaches office and uses.Along with more and more these type systematics become main flow, be necessary to simplify the operation and maintenance of these systems.Many present system requirements users will have enough special knowledge and comprehension.In an office environment, can need a wireless cell planner planning system to dispose to avoid interference and capacity problem.In a domestic system, a user must for avoid from other apparatus for household use for example blue bud device, microwave oven, household radio telephone, and interference of other contiguous wlan system abundant knowledge is arranged.The essence of disturbing because of the time different, and mean that skilled user or wireless cell planner can be required to want the interference of regular adaption systems with the antagonism change.Certainly, this is very unpractical, need be that wlan system is automatically managed on the basis with the Changing Environment therefore.The present invention satisfies two big major requirements: (1) self-configuration and dispose easily and ripple is amplified and covered continuously in (2).
For facilitating self-configuration and disposing easily, expectation proposes a kind of access point (AP), it the time can automatically select best job parameter in start, such as through-put power, frequency, energy detection threshold etc., only requires to obtain few configuration data or do not need from setter.In addition, can expect its environment of AP periodic monitoring and adjust that each parameter is condensed passband so as to optimization and so as to the continuous and predictable ripple that covers is provided.
Summary of the invention
A kind of have the method for carrying out RRM (RRM) in the WLAN (WLAN) of an access point and a platform one and start from from a current flux channel and obtain first population of parameters.The measured value of obtaining all available channels is as second population of parameters.Independently manage the Radio Resource of this WLAN by the mode that optionally causes at least one RRM algorithm that uses at least one parameter.One RRM algorithm can be based on the result who is produced by a previous RRM algorithm of carrying out and is initiated, and the RRM algorithm can be caused Radio Resource independently to be managed by initiation continuously whereby.
One self-configuration access point (AP) comprises a measurement mechanism, a power and channel automatic dialing unit, a load balance device, an interference management device, reaches a link controller.This measurement mechanism is measured the population of parameters of the environment of this AP.This power and channel automatic dialing unit serve as basis decision transmission power level with this parameter and select channel.This load balance device is the load between basic balance APs with this population of parameters and does not use between AP and communicate by letter.It is compensation outside, basis and internal interference that this interference management device is used to this population of parameters.This link controller monitoring is chain quality and adjustment schedule job and data transmission rate down.
A kind of integrated circuit that is used for the RRM (RRM) in having a WLAN (WLAN) of an access point (AP) and a platform comprises: the member of obtaining that is used for obtaining from a current flux channel first population of parameters; Measure with the measurement member of measured value from all available channels as second population of parameters; Reach the management component of independently managing the Radio Resource of this WLAN by the mode that optionally causes at least one RRM algorithm that uses at least one parameter.
Description of drawings
Can be from the clearer the present invention of understanding of preferred embodiment of the present invention who proposes with way of example and described in detail with reference to accompanying drawing, in the accompanying drawing:
Fig. 1 is a sketch plan according to a RRM algorithm framework of the present invention;
Fig. 2 one is used for the timesharing sketch plan of RRM algorithm framework shown in Figure 1;
Fig. 3 is the plan view from above of a system layout of an external disturbance application examples;
Fig. 4 a and Fig. 4 b are the flow charts that moves that access point is taked in application examples shown in Figure 3;
Fig. 5 is the plan view from above of a system layout of type ward room of an office application examples; And
Fig. 6 is the flow chart that moves that an access point is taked in application examples shown in Figure 5.
Embodiment
The present invention is distributed radio resource management (RRM) system that a kind of collective facilitates the optimal representation of a wlan system.The present invention can operate under following restrictive condition: obey 802.11a/b/e/g fully, do not have to communicate by letter between AP, with traditional APs coexistence, platform is not had specific (special) requirements (that is less than the special metrical information from platform), and do not have centralized controller.Right the present invention is not limited to these restrictive conditions, and also is suitable for when one or more of in the middle of removing these restrictive conditions.
Decision of the present invention is the information that receives and monitor based on AP.Indivedual APs taked each move and can not unite and form a chaotic unstability system.This system is designed so that each AP works with other APs, and communication also is like this between AP even do not use.The present invention is made of four principal characters: power and channel are selected automatically, load balance, interference management, and controlling links.These four features play a role together so as to forming a high efficiency and strong RRM system.
I. power and channel are selected automatically
Two kinds of situations during power and channel select (APCS) to be used in AP when start and steady state operation automatically.This feature determines automatically that in the initial setting process baseline covers ripple district and channel.After this, it monitors context termly so that optionally adjust these parameters (for example having physical change, a new AP to install or remove in the installation etc. at environment).This baseline covers the ripple district and is equivalent to and can provides the zone that can accept to cover ripple to platform in it, and is that just the path forfeiture (being called the baseline scope) at its edge is defined.This inner parameter is that this program is estimated to lose to the path of vicinity APs from this AP by the mode of monitoring available channel via the decision of path forfeiture discovery procedure.The baseline scope be used as the present through-put power of setting this AP three inputs one of them.Two other input is by this load balance feature and this interference compensation and avoids characteristics determined.These inputs are answered the complex wave district respectively and are adjusted and necessary received power.The baseline scope also is used as several that set to remove energy measuring (ED) threshold value that channel assessment (CCA) program uses and imports one of them, and this program is used for judging transmission and the reception of when attempting package by AP.
II. load balance
Load balance is to be used to stride APs and channel balanced load.It is made of two complementary mechanisms: AP load balance and channel load balance.What the AP load balance was adjusted AP covers the ripple district.One scope adjusted value is applied in to be set in the middle of the present through-put power so that seriously unbalanced between the load of the load of correcting selected AP and contiguous APs, and this and this used channel of APs has nothing to do.
The main application examples of this feature is ward room's situation, and wherein a large amount of crowds carry out the short time meeting in that a meeting is indoor.Covering the ripple district and reducing and provide the mode of covering the ripple district of the AP of service to manage the heavy load that adds of AP in this service to the meeting room zone by the contiguous APs of temporary increasing is provided this feature.This feature provides benefit in two ways: at present by this heavy duty AP provide service platform can one of them provides better service by contiguous APs, and the platform in the scope of this heavy duty AP can benefit for medium better access is arranged because one or more platforms are offloaded to contiguous APs.This situation will be explained below.
The channel load balance is to be used to the central load of balance different channel.It is to carry out in the mode of utilizing different channel to assess the load of APs termly.Can make decision and use the used channel of the contiguous APs of underload, and the channel change is not have in the BSS that serves at AP to carry out in the activity.This two load balances mechanism is independently and for the situation that channel and/or APs balance are not striden in load to provide constructive improvement.
III. interference compensation and avoidance
Interference compensation and avoidance (ICA) are used to compensate outside and internal interference.The ICA feature is made of three programs: slow curing is disturbed estimation, fast Interference Estimation, and frequency is selected escape.
Generally speaking, to disturb the target of estimation be slowly and continuously to estimate to accept the necessary received power of quality to slow curing.Necessary received power is used as three of the present through-put power of setting this AP and imports one of them.This is by monitoring successfully transmission and failed transmission so that judge whether the received power at platform place reaches the mode that can accept data transmission rate and carry out.
The target of fast Interference Estimation program is the sudden significantly external disturbance variation of the necessary received power of rapid adjustment to be responsible for causing because of microwave oven, elevator etc.Interference is to judge by the mode of monitoring received signal intensity indication (RSSI) when not detecting package.
If it is tolerable not that BSS just meets with too high be jammed situation or interference, the trial of another channel that then makes a choice.Channel escape sequential monitoring delays rate, packet error (PER), reaches and disturb.Owing to changing the necessary break in service of channel, so only be the situation change channel of unable support in load and/or interference at present.
IV. controlling links
Controlling links is used to monitor the following chain quality that channel is felt, and adjusts schedule job and data transmission rate.Controlling links is made of two programs: rate controlled and scheduler program.Rate controlled serves as that data transmission rate is adjusted on the basis with the sensation quality at platform place.The affirmation message of omitting can reduce momentary rate.Also exist a speed to reply program so as in sure affirmation message recovery rate.In addition, the present load meeting of medium influences the speed that speed reduces and replys.
Scheduler program attempts having precedence over by the transmission that makes the higher data transfer rate transmission manner maximization medium use of lower data transfer rate.With regard to same quantity of data, the transmission meeting of lower data transfer rate is used more multimedia than the transmission of higher data transmission rate.Therefore, just maximize the position of passband, the transmission that makes high data transmission rate preferentially is favourable.But this framework may cause unacceptable delay to the platform of lower data transfer rate.For making delay minimization, in choosing the process of next package to be sent, lower data transfer rate user's present delay to be considered in the lump together with its priority.
802.11e standard can make the delay-sensitive degree be higher than he person's service such as sound and video streams priorization.Permission control and 802.11e keynote degree allow the AP priorization and manage the request that platform uses for medium.But these functional periods assist AP to understand the maximum holding load precedingly.In 802.11e, platform carries out access by providing such as the mode request of the information of required average data transfer rate to medium.This helps the present and following load on the AP estimation medium, facilitates and makes correct permission control decision.
V. algorithm architectural overview, interaction, and timesharing
Fig. 1 is a sketch plan according to a RRM system of construction of the present invention.The input of system 100 be from the present channel live flow (live traffic) 102 and one free of interest during in the measured value 104 obtained obtain.Measured value 104 is to record when AP does not post a letter and is to obtain with regard to all available channels.Input 102,104 is supplied to each algorithm 110-122 of the whole RRM of composition system 100.In Fig. 1, the input and output of algorithm or program are travelled to and fro between in the rectangular block representative, and the round rectangle block is represented algorithm and/or program.
Need the program of faster reaction time such as rate controlled/scheduling, power control (fast Interference Estimation), EDT control, and frequency select the flow of escape monitoring from present channel.Have all the other programs in relatively slow reaction time such as power control (the path forfeiture is found), power control (load balance), and the frequency measured value of selecting optimization to obtain in depending on during free of interest.Input and output are well coordinated in the middle of each algorithm and program.For instance, can be controlled by EDT and the channel selection use by the present scope that the path forfeiture is found and the load balance program determines.
One rate controlled/dispatching algorithm 110 is from present channel confirmation of receipt message (ACKs), CCA threshold value, and data transmission rate 102.Rate controlled/dispatching algorithm 110 attempts setting the data transmission rate under the known present operating condition.It almost is that react to packet error (one or two omit ACKs) and channel utilization rate (usually in one second) immediately, so it moves, and to be close to be irrelevant with other program.Its operating environment is influenced by other program, and these programs attempt improving transmission rate, makes that average upward transmission rate is high.For instance, 112 trials of power control (ICA) algorithm serve as that power is adjusted on the basis to comprise average data transfer rate at interior various coefficients.
One power control (ICA) algorithm 112 receives RSSI value, ACKs, data transmission rate, reaches CCA threshold value 102 from present channel, and measures reception rssi measurement value and CCA threshold value 104 during free of interest.Power control (ICA) algorithm 112 estimates and adjusts the sensation interference at platform place and produce a necessary received power value 130 that this necessary received power value is sent to a first adder 140.Power control (ICA) algorithm 112 comprises two parts: fast power control and the control of slow power.Fast power control algorithm is reacted in response to big and unexpected interference.It collects measured value 102 and regularly (approximately per second) or operate on demand to adjust necessary received power value 130 on the present channel.Slow power control algorithm is to react in the basis with the sensation quality at platform place.It collects measured value 102 and regularly (approximately per minute) or operate on demand to adjust necessary received power value 130 on the present channel.
Measured value 104 during one power control (the path forfeiture is found) algorithm, 114 reception RSSI are free of interest.Power control (the path forfeiture is found) algorithm 114 is attempted covering the ripple district by the best of monitoring the contiguous AP transmission manner judgement cell on all channels.The scope of cell and used channel are irrelevant, only depend on the path forfeiture to contiguous APs.Power control (the path forfeiture is found) algorithm 114 produces a baseline value range 132 and this value is delivered to a second adder 142.When system is in a stable state, algorithm 114 collect termly free of interest during measured value 104 and upgrade baseline value range 132.At new AP between the discovery period, algorithm 114 during free of interest in from this new AP collection measured value and upgrade baseline value range 132.This new AP is more frequent to send strong package, and this makes required acquisition time be reduced to about one minute.
One power control (load balance) algorithm 116 receives RSSI value and package duration 102 from present channel, and measures reception ACKs and CCA threshold value 104 during free of interest.Power control (load balance) algorithm 116 is used to adjust and covers the ripple district so that seriously unbalanced between the load of correcting this AP and the load that is close to APs.Load balance is to stride that APs carries out and irrelevant with channel.Power control (load balance) algorithm 116 produces a scope adjusted value 134, and this scope adjusted value is sent to second adder 142.
One energy detection threshold (EDT) control algolithm 118 receives packet error (PER) and delays rate information from present channel.EDT control algolithm 118 attempt determining an EDT threshold value 154 make package transmission and receive all optimizations.This mainly is based on PER and delays rate.EDT threshold value 154 is retrained by present scope of cell and receiver susceptibility.This algorithm is carried out quite apace, and moving that itself and other program that makes is taked is irrelevant.One channel change causes EDT that this EDT threshold value is reset to minimum value (receiver susceptibility).Meeting influence the present set point of EDT threshold value 154 and be to be adjusted with interior at about one second by any variation meeting that 114,116 pairs of present value ranges 150 of power control algorithm cause.
One frequency selects (optimization) algorithm 120 to measure reception rssi measurement value, CCA threshold value and ACKs 104 during free of interest.Frequency selects (optimization) algorithm 120 to be used to the use of the central available channel of optimization APs.It is striden channel but not strides APs and carry out certain load balance.It is mobile that this guarantees that power control (load balance) algorithm 116 and frequency select that (optimization) algorithm 120 taked is independently and not to clash.For instance, this power control algorithm take one strengthen or reduce an AP to cover the mobile of ripple district be based on the measured value across all channels, so all be effective for any available channel of this AP.Frequency changes a new present channel 156 into when selecting (optimization) algorithm 120 not have activity on channel.
One frequency selects (escape) algorithm 122 to receive PER and delay rate information 102 from present channel, and measures reception RSSI value, CCAs and ACKs 104 during free of interest.Frequency select (escape) algorithm 122 strengthen AP power (fast and slow curing is disturbed estimation), strengthen/reduce ED threshold value (EDT control) or reduce data transmission rate (rate controlled/scheduling) can helpful situation in for the interference level of tolerable not and be jammed and react.Frequency is selected (escape) algorithm 122 in a single day to be initiated promptly at about 30 seconds internal reactions and is changed a new present channel 156 into.In case channel 156 is changed at present, promptly carries out about five a minutes random back (backoff) before selecting a new channel.
Fig. 2 shows the frequency of the running of each algorithm.The present invention is designed to its Changing Environment is reacted quite apace.New APs was found in about one or two minute, and system can be unbalanced to solve for example " ward room " situation with the serious load of inner equilibrium at five minutes.In addition, fast reaction algorithm such as frequency select escape to react for the serious interference or the situation of being jammed in tens of seconds.
VI. application examples 1: serious external interference source
The unexpected generation of following application examples narration one serious external interference source.The basic network layout as shown in Figure 3, wherein four APs (BSS 1 to BSS 4) build in one 50m * 50m building.AP 4 is positioned in to be had in one by the small office of the microwave oven kitchen.
According to the rule of thumb, the present is done some hypothesis to the interference that this microwave oven produced.The interference that this microwave oven produced in channel 11 for the highest, lower and extremely low in channel 1 in channel 6.In addition, only near being located in microwave oven, disturb when (that is BSS 4) and to be only unable support.
Before microwave oven used, system is in following state: all BSSs were with a similar media load operation, and all are served platform all high satisfaction; All APs are with the power emission than the low 5dB of its maximum power setting value; And all platforms are with maximum power transmission.
The initial channel allocation of each BSS is listed in table 1.
Table 1: the initial channel allocation of each BSS
| BSS ID | |
| 1 | 11 |
| 2 | 1 |
| 3 | 6 |
| 4 | 11 |
In case this microwave oven is switched on, BSS 4 experiences the interference level of tolerable not, and the interference level in BSS 1 and the BSS3 strengthens.
In AP1 and AP3, following sequence of events can take place, shown in Fig. 4 a.The sensation interference level strengthens because of microwave radiation, and receiver noise floors for APs and platform (noise floor) improves about 3dB (step 402).Experience package transmission mistake (step 404) at following chain (DL).Rate control algorithm is attempted solving interference problem (step 406) by the mode that reduces the package transmission rate immediately.Power control (Interference Estimation) algorithm is understood the recruitment of interference and the AP through-put power is improved 3dB.The final original transmitted rate (step 410) that is used for each platform of replying of rate controlled.
In AP 4, following sequence of events can take place, shown in Fig. 4 b.The sensation interference level strengthens because of microwave radiation is serious, and the receiver noise floors improves about 20dB (step 420) for APs and platform.Experience many package transmission mistakes (step 422) at DL and cochain (UL).Rate control algorithm reduces the speed (step 424) of delivering all platforms immediately.Power control algorithm is understood the recruitment of interference and the AP through-put power is increased to maximum AP through-put power (step 426).Owing to still can experience a too high packet error, frequency selects the escape algorithm to be triggered.This AP changes its channel into channel 1 (step 428) that microwave oven produces much lower interference from channel 11.Make all platform disassociations, and finally rebulid association (step 430).Power control algorithm reduces through-put power (step 432) according to the sensation interference level on the channel 1.
The final channel of each BSS distributes lists in table 2.
Table 2: the final channel of each BSS distributes
| BSS ID | |
| 1 | 11 |
| 2 | 1 |
| 3 | 6 |
| 4 | 1 |
VII. application examples 2: ward room's situation
Suppose to contain the zone of one 50m * 50m with one four AP wlan system.Each AP is contained about 25m * 25m.This zone is divided into main office and a large conference room and a little meeting room.Each office is a single or double office.Every employee has a laptop computer that possesses the WLAN access capability.APs roughly is positioned in each quadrant in this zone as shown in Figure 5.
The main hypothesis of this situation be this APs by equilibrating fifty-fifty, each AP bears 1/4th of total load, and is to operate with channel shown in the table 3 at the beginning the time.Total load on each AP is quite light, approximately be AP active volume 10%.
Table 3: the initial channel allocation of each BSS
| Quadrant | Initial channel |
| Upper left (ULQ) | 1 |
| Upper right (URQ) | 6 |
| Lower-left (LLQ) | 11 |
| Bottom right (LRQ) | 1 |
Following incident and mobile can take place, as shown in Figure 6.Carry out in two meeting rooms of a convention in ULQ.The load of ULQ AP strengthens suddenly because of movable increasing, and the load in other quadrant simultaneously reduces (step 602).In five to ten minutes, power is controlled (load balance) thereby has been collected enough measured values and judged that it must dwindle the scope (step 604) of influenced cell.Similarly, contiguous APs also detects one of ULQ and adds heavy load, therefore enlarges the scope (step 606) of these APs.So these APs gently have the ability to do like this because of the load that it covers in the ripple district.It is relatively poor and be online to one of them platform of contiguous APs that the raising of through-put power helps determining ignoring the position immediately.
In parallel the carrying out, the frequency among the LRQ AP (itself and ULQ AP use same channel) selects optimization to find activity on other channel far below the channel of its present use, and determines to change frequency into channel 6 or channel 11 (step 610).When only can having activity in LRQ AP, actual change do not carry out.
Platform in the fringe region of ULQ can rebulid related (step 612) with other AP quadrant.Some platforms comprise built-in load balance feature, and can select the AP of low load easily this moment, enlarge because cover the ripple district.
Previous described RRM algorithm can be used by an AP.The assembly that this AP carries out RRM can be a for example appointment application integrated circuit of single integrated circuit (IC); A plurality of ICs; Discontinuous assembly; Or IC (s) makes up with one of discontinuous assembly.
Though with regard to particular combinations feature of the present invention and assembly are described in preferred embodiment, each feature or assembly must be used alone (further feature and the assembly that do not possess preferred embodiment) or be used in combination to be with or without the various of further feature of the present invention and assembly.Though with accompanying drawing and literal illustration specific embodiment of the present invention, person skilled in the art person can not depart from the scope of the present invention and make various variation.More than explanation only is example and does not limit the present invention in any way.
Claims (8)
1. one kind has the method for carrying out RRM in the WLAN of an access point and a platform one, and this method may further comprise the steps:
Obtain one first population of parameters from a current flux channel;
Obtain measured value as one second population of parameters from all available channels; And
Independently manage the Radio Resource of this WLAN by the mode that optionally causes at least one wireless resource management algorithm that uses at least one parameter.
2. the method for claim 1, when it is characterized in that this is obtained the measured value step and is included in this access point and does not post a letter in one free of interest during in obtain measured value.
3. the method for claim 1, it is characterized in that it serves as that a wireless resource management algorithm is caused on the basis that this management process comprises with the result that wireless resource management algorithm was produced by a previous execution, a plurality of whereby wireless resource management algorithms can be caused continuously, cause managing radio resources independently.
4. the method for claim 1 is characterized in that selecting among the group that this at least one wireless resource management algorithm is made up of following algorithm: rate controlled/scheduling, power control, energy detection threshold control and frequency selection.
5. the method for claim 1 is characterized in that selecting among the group that this at least one parameter is made up of following parameters: confirm, remove channel assessment, data transmission rate, the indication of received signal intensity, package duration, packet error and delay rate.
6. self-configuration access point, it comprises:
One measurement mechanism, it is used to measure a population of parameters of an environment of this access point;
One power and channel automatic dialing unit, it is used for serving as basis decision transmission power level and selecting channel with this parameter;
One load balance device, it is used for being the load between basic balanced access point and not using between access point and communicate by letter with this population of parameters;
One interference management device, it is used for this population of parameters is compensation outside, basis and internal interference; And
One link controller, it is used to monitor down the chain quality and adjusts schedule job and data transmission rate.
7. self-configuration access point, it comprises:
Be used to measure the measurement member of a population of parameters of an environment of this access point;
Being used for this parameter is basis decision transmission power level and power and the automatic selected member of channel of selecting channel;
Be used for being the load between basic balanced access point and not using the load balance member of communicating by letter between access point with this population of parameters;
Be used for this population of parameters is the interference management member of compensation outside, basis and internal interference; And
The controlling links member that is used to monitor down the chain quality and adjusts schedule job and data transmission rate.
8. integrated circuit that is used for the RRM in a WLAN with an access point and a platform, this integrated circuit comprises:
Be used for obtaining the member of obtaining of one first population of parameters from a current flux channel;
Obtain the measurement member of measured value from all available channels as one second population of parameters; And
Be used for independently managing the management component of the Radio Resource of this WLAN by the mode that optionally causes at least one wireless resource management algorithm that uses at least one parameter.
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| CN102946611B (en) * | 2012-11-28 | 2015-04-08 | 西安电子科技大学 | Multidimensional resource allocation method in dense WLAN (wireless local area network) based on tabu search |
| CN105340333B (en) * | 2013-10-18 | 2019-07-19 | 华为技术有限公司 | A kind of method and device of power and channel the joint configuration of WLAN |
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| US6215982B1 (en) * | 1996-06-28 | 2001-04-10 | Cisco Systems, Inc. | Wireless communication method and device with auxiliary receiver for selecting different channels |
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2004
- 2004-12-30 CN CNA2004800390789A patent/CN1957624A/en active Pending
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2005
- 2005-01-10 CN CNU2005200024286U patent/CN2847709Y/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6215982B1 (en) * | 1996-06-28 | 2001-04-10 | Cisco Systems, Inc. | Wireless communication method and device with auxiliary receiver for selecting different channels |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106604294A (en) * | 2015-10-19 | 2017-04-26 | 清华大学 | Wireless router management method and system |
| CN106604294B (en) * | 2015-10-19 | 2019-11-08 | 清华大学 | Wireless router management method and system |
| CN111278073A (en) * | 2020-01-20 | 2020-06-12 | 普联技术有限公司 | WIFI roaming setting method and device, wireless connection equipment and readable storage medium |
| CN111278073B (en) * | 2020-01-20 | 2022-03-08 | 普联技术有限公司 | WIFI roaming setting method and device, wireless connection equipment and readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN2847709Y (en) | 2006-12-13 |
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