CN101534517A - Method, system and device for measuring receiving channel power - Google Patents
Method, system and device for measuring receiving channel power Download PDFInfo
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- CN101534517A CN101534517A CN200810084621A CN200810084621A CN101534517A CN 101534517 A CN101534517 A CN 101534517A CN 200810084621 A CN200810084621 A CN 200810084621A CN 200810084621 A CN200810084621 A CN 200810084621A CN 101534517 A CN101534517 A CN 101534517A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The embodiment of the invention discloses a method, a system and a device for measuring receiving channel power. The method for measuring the receiving channel power comprises the following steps of: receiving a measurement request sent from a first station (STA) to a second station (STA) which is under a dormancy state; providing the measurement request to the second STA when the second STA enters an awakening state from the dormancy state; receiving the measurement report which is sent by the second STA according to the measurement request and sending the measurement report to the first STA. According to the embodiment, an AP sends the measurement request and the measurement report; the awakening STA of the measurement request needs not to be under an awakening state, thus saving the energy of STA, and solving the problem that the STA can not receive the measurement request as the STA requested to be measured is under an electricity-saving mode.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of measuring receiving channel power mthods, systems and devices.
Background technology
802.11 will support the equipment of 802.11 agreements to be called STA (Station stands) in the standard, a STA is called BSS (Basic Service Set, Basic Service Set) by the network of forming arbitrarily.A STA can support AP (Access Point, access point) function, also can not support the AP function.To not support that below the STA of AP function abbreviates STA as, and support the STA of AP function to be called AP.
In a BSS that AP arranged, in order to strengthen network throughput and to improve QoS, prior art has been formulated the direct-connected method of STA, promptly allows to be associated with two direct-connected communications of STA of supporting QoS of same AP.
A kind of direct-connected method for building up has been proposed in the prior art, concrete, initiate direct-connected STA direct-connected request message is sent to AP, wherein comprise the MAC Address of the other side STA.If AP finds that opposite end STA is not associated with oneself, then refuse this direct-connected request, otherwise be transmitted to opposite end STA.Opposite end STA according to circumstances accepts or refuses direct-connected request.
Also proposed a kind of direct-connected method that does not need AP to participate in the prior art, the direct-connected related news of setting up are encapsulated in the Frame through the AP transparent transmission, are called the direct-connected method for building up of tunnel type.The direct-connected process of setting up of tunnel type may further comprise the steps:
(1) the direct-connected STA of request sends direct-connected request message to opposite end STA;
(2) be requested direct-connected STA and agreeing the direct-connected request response of loopback under the direct-connected situation;
(3) the direct-connected STA of request sends an acknowledge message to the opposite end again.
On behalf of two STA, above-mentioned two kinds of direct-connected method for building up just can directly send out message mutually after finishing direct-connected message mutual, also need the method by measurement receive channel power judge whether to switch to direct access path on directapath.
In the prior art, the STA under the battery saving mode is in turn and revives and resting state.STA can revive termly, receives the beacon frame of AP, looks to receive the Frame that do not have oneself to receive if just have, and continues dormancy then.If STA has data to send, transmission data at any time then can come to life.Because beacon frame is that accurate timing periodically occurs, so STA can accomplish then to revive exactly, and can not miss the beacon frame of wanting, can be not too early yet come to life and waste energy.When STA is in resting state, can't received signal.When two STA pass through the direct connected link communication, can not guarantee to obtain the data transmission route in the moment of determining, therefore two STA reception data of also just can't under battery saving mode, consulting to come to life when, so be defined in the prior art and can not enter battery saving mode when direct-connected.Yet, battery saving mode can not be entered and the availability of direct-connected pattern will be influenced widely, because consumed power quickly when this causes two STA in same BSS to carry out communication under the bad situation of network QoS, reduce the effective time of device battery, and direct-connectedly carry out automatically, why the user does not know that power consumption must be than comparatively fast, the user experience variation.
RCPI (Receiving Channel Power Indication, the indication of receive channel power) measurement request frame and RCPI measurement report frame have been defined in the prior art.In the prior art, can STA1 switch to direct access path with the path that sends data to STA2 in order to judge, directly sends a measurement request frame to STA2 in advance.If STA2 can receive this measurement request frame, the RCPI2 that receives the RCPI1 of AP signal and receive the STA1 signal is carried at sends to STA1 in the measurement report frame.STA1 receives the measurement report from STA2, proof STA2 and STA1 are in a BSS, and on signal quality, can directly connect follow-up can the decision still on the AP path, transmitting data on the direct access path at least according to power, the quality relation of RCPI1 and RCPI2 to STA2.If STA1 can not receive the measurement report frame of STA2 after sending the request of measurement, illustrating temporarily can not be direct-connected, might be that STA2 is too far away from STA1, can not receive the signal of STA1.
In this method, STA1 or STA2 may be in battery saving mode, cause some obstacles to measuring process.For example, be in the situation that battery saving mode, STA2 are in normal mode, need to guarantee that STA1 should guarantee not enter in a period of time resting state sending measurement request frame after, so that the measurement report frame of reception STA2 for STA1; Be in the situation that normal mode, STA2 are in battery saving mode for STA1, when STA1 sends measurement request frame to STA2, STA2 is in resting state, STA2 can't receive measurement request frame, just can not send measurement report frame yet, cause STA1 can't obtain RCPI information, also just can't judge whether to switch to direct access path.
A kind of solution has been proposed in the prior art, because it all is because some Event triggered that STA1 sends measure request to STA2, for example STA1 receives the RX path handoff request of STA2, and this moment, can STA1 just need measure the path handoff request that satisfy STA2 to judge.Therefore, STA2 is sending RX path when the AP path switches to the handoff request of direct access path, can guarantee STA2 in a period of time, to keep wake states and not enter resting state, up to the measurement request that receives STA1 and to the STA1 loopback measurement report.
The inventor finds that there is following problem at least in prior art in realizing process of the present invention:
Because RX path switches to direct-connected handoff request from AP and transmits by AP, STA1 just can receive this claim frame, so STA2 will keep the wake states of long period, and this can consume more electric energy at once.
Summary of the invention
Embodiments of the invention provide a kind of measuring receiving channel power mthods, systems and devices, are used to make measuring receiving channel power can carry out smoothly when the STA that is requested to measure is in battery saving mode.
For achieving the above object, embodiments of the invention provide a kind of measuring receiving channel power method, may further comprise the steps:
Receive the measurement request that first stop STA sends to the 2nd STA that is in resting state;
Described the 2nd STA offers described the 2nd STA with described measurement request when resting state enters wake states;
Receive the measurement report that described the 2nd STA sends according to described measurement request, and send to a described STA.
Embodiments of the invention also provide a kind of AP device of supporting measuring receiving channel power, comprising:
Measure the request receiving element, be used to receive the measurement request that a STA sends to the 2nd STA that is in resting state;
The request of measuring provides the unit, be used for when described the 2nd STA when resting state enters wake states, the measurement request of described measurement request receiving element reception is offered described the 2nd STA;
The measurement report retransmission unit is used to receive the measurement report that described the 2nd STA sends according to described measurement request, and sends to a described STA.
Embodiments of the invention also provide a kind of STA device of supporting measuring receiving channel power, comprising:
Measure the request receiving element, be used to receive the measurement request that sends by AP from another STA;
The test frame transmitting element is used for when described measurement request receiving element receives the measurement request, sends test frame to described another STA that sends described measurement request;
The measurement report transmitting element, the response frame that is used for returning according to described another STA generates measurement report and sends.
Embodiments of the invention also provide a kind of STA device of supporting measuring receiving channel power, comprising:
Measure request transmitting unit, be used for sending the request of measurement to another STA that is in resting state by AP;
The measurement report receiving element is used to receive the measurement report by described another STA transmission that described AP sends.
Embodiments of the invention also provide a kind of system that supports measuring receiving channel power, comprising:
The one STA is used for sending the request of measurement by AP to the 2nd STA that is in resting state;
Access point AP is used to receive described measurement request; When resting state enters wake states, described measurement request is offered described the 2nd STA at described the 2nd STA; Receive the measurement report that described the 2nd STA sends according to described measurement request, and send to a described STA;
The 2nd STA is used to receive the measurement request from a described STA that described AP sends, and generates measurement report and pass through described AP according to described measurement request to send to a described STA.
Compared with prior art, embodiments of the invention have the following advantages:
The embodiment of the application of the invention, transmission by AP request of measuring and measurement report, the recipient STA of measurement request frame needn't be in wake states always, thereby has saved the energy of STA, has solved the STA that is requested to measure and has been in battery saving mode and can not receive the problem of asking of measuring.
Description of drawings
Fig. 1 is the flow chart of measuring receiving channel power method in the embodiment of the invention;
Fig. 2 is another flow chart of measuring receiving channel power method in the embodiment of the invention;
Fig. 3 is a flow chart again of measuring receiving channel power method in the embodiment of the invention;
Fig. 4 is the schematic diagram of measuring receiving channel power system in the embodiment of the invention.
Embodiment
Embodiments of the invention provide a kind of method of measurement of receive channel power, as shown in Figure 1, may further comprise the steps:
Step s101, AP receive the measurement request that first stop STA sends to the 2nd STA that is in resting state.Concrete, this measurement request is for measurement request frame or encapsulated the Frame that measurement is asked.
When resting state entered wake states, the request of will measuring offered the 2nd STA at the 2nd STA for step s102, AP.
Step s103, the 2nd STA generate measurement report according to the request of measurement, and send to AP.Concrete, this measurement report is measurement report frame or the Frame that has encapsulated measurement report.
Step s104, AP receive the measurement report that the 2nd STA sends, and send to a STA.
Below in conjunction with drawings and Examples, the execution mode of measuring receiving channel power method among the present invention is described further.
In the embodiments of the invention, provide a kind of STA the method for measurement of direct-connected middle receive channel power.Among this embodiment, AP participates in STA1 and is in the process of setting up direct-connected between the STA2 of park mode.In this process, the measurement request that STA1 sends is a measurement request frame, and AP need resolve direct-connected related news, and the RCPI measuring process when participating in STA2 and being in park mode.
The method of measurement of the receive channel power among this embodiment may further comprise the steps as shown in Figure 2:
Step s201, STA1 are that the measurement request frame of STA2 sends to AP with destination address.
The destination address that step s202, AP resolve in this measurement request frame obtains STA2.
Concrete, AP finds that the destination address in this measurement request frame is STA2, and STA2 also is associated with this AP, and then AP transmits this request; Otherwise refuse this measurement request frame, the situation of this refusal is not described in Fig. 2.
Step s203, AP find that STA2 is in battery saving mode, can not initiatively measurement request frame be sent to STA2, so this measurement request frame of buffer memory.
Step s204, STA2 obtain this measurement request frame from AP after entering wake states from resting state.How to revive and how receive the information that sends to STA2 particularly as for STA2, have a detailed description in 802.11 received texts, so no longer describe in detail from AP.
Step s205, STA2 directly send a test frame to STA1 with maximum power.
Concrete, STA2 revive get access to measurement request frame constantly from STA1 from AP after, when obtaining send opportunity next time with maximum power directly to test frame of STA1 transmission.This test frame can be an empty Frame, also can define a test frame type in addition.
After step s206, STA1 receive test frame, immediately with ACK frame of maximum power loopback.
Concrete, if test frame is an empty Frame, STA1 does not set up direct access path before finding, just with maximum power loopback ACK frame.If test frame is a new test frame type, then easier the judging of STA1 should send the ACK frame with maximum power.Need, STA2 can send a plurality of test frames continuously, and STA1 just can a plurality of ACK frames of loopback.So, STA2 can obtain to receive the RCPI2 of STA1 signal.
Step s207, STA2 send measurement report frame to AP, wherein comprise RCPI1 and RCPI2.
Concrete, mutual by step s205 and step s206, STA2 has obtained to receive the RCPI2 of STA1 signal; Also obtained to receive the RCPI1 of AP signal simultaneously with in the mutual process of AP.Then STA2 sends to AP with measurement report when obtaining new send opportunity, wherein comprises RCPI1 and RCPI2.
Step s208, AP send to STA1 with measurement report frame, wherein comprise RCPI1 and RCPI2.
In the embodiments of the invention, also provide a kind of STA the method for measurement of direct-connected middle receive channel power.Use the direct-connected method for building up of tunnel type among this embodiment, direct-connected related news all are encapsulated in process AP transparent transmission in the Frame, and AP does not participate in the direct-connected process of setting up.
The method of measurement of the receive channel power among this embodiment may further comprise the steps as shown in Figure 3:
It is the Frame of STA2 that step s301, STA1 send destination address to AP, is packaged with the request of measurement in this Frame.
Step s302, this Frame of AP buffer memory.
Concrete, because this is a Frame for AP, AP can not resolve content wherein, be AP and the content of not knowing the Frame the inside, therefore AP does not know that this is actually STA1 and is measuring to the STA2 request, therefore AP can not judge STA2 whether with STA1 in a BSS, therefore do not have the situation of refusal, but directly be transmitted to STA2.In addition, STA2 is in battery saving mode, and AP can not initiatively send to STA2 with Frame, but this frame of buffer memory waits for that STA2 asks for.
Step s303, STA2 obtain Frame from AP after entering wake states from resting state, and parse this measurement request from the tunnel type Frame.
Step s304, STA2 directly send a test frame to STA1 with maximum power.
Concrete, STA2 can resolve content wherein when receiving Frame, if find it is a tunnel frame, then further resolve the wherein content of encapsulation.The content of finding wherein encapsulation be during from the measurement request of STA1, when obtaining send opportunity next time with maximum power directly to test frame of STA1 transmission.This test frame can be an empty Frame, also can define a test frame type in addition.
After step s305, STA1 receive test frame, immediately with ACK frame of maximum power loopback.
Concrete, if test frame is an empty Frame, STA1 does not set up direct access path before finding, just with maximum power loopback ACK frame.If test frame is a new test frame type, then easier the judging of STA1 should send the ACK frame with maximum power.Need, STA2 can send a plurality of test frames continuously, and STA1 just can a plurality of ACK frames of loopback.So, STA2 can obtain to receive the RCPI2 of STA1 signal.
Step 306, STA2 are packaged with the Frame of measurement report to the AP loopback, wherein comprise RCPI1 and RCPI2.
Concrete, mutual by step s304 and step s305, STA2 obtains to receive the RCPI2 of STA1 signal; Also obtained to receive the RCPI1 of AP signal simultaneously with in the mutual process of AP.Then STA2 sends to STA1 with measurement report by tunnel style when obtaining new send opportunity, wherein comprises RCPI1 and RCPI2.
Step 307, AP are packaged with the Frame of measurement report by tunnel style to the STA1 loopback, wherein comprise RCPI1 and RCPI2.
The said method that the application of the invention embodiment provides, transmission by AP request of measuring and measurement report, the recipient STA that measures request needn't be in wake states always, thereby saved the energy of STA, solved the STA that is requested to measure and be in battery saving mode and can not receive the problem of asking of measuring.
Embodiments of the invention also provide a kind of measuring receiving channel power system, as shown in Figure 4, comprising:
The one STA 10 is used for sending the request of measurement by AP 20 to the 2nd STA 30 that is in resting state.
The 2nd STA 30 is used to receive the measurement request from a STA 10 that AP 20 sends, and generates measurement report according to the request of measurement and also sends to a STA 10 by AP 20.
Concrete, a STA 10 specifically comprises:
Measure request transmitting unit 11, be used for sending the request of measurement by AP 20 to the 2nd STA 30 that is in resting state, this measurement request is specially measurement request frame or has encapsulated the Frame of the request of measuring.
Response frame transmitting element 12 when being used to receive the test frame of the 2nd STA 30 transmissions, returns a response frame.
Measurement report receiving element 13 is used to receive the measurement report by the 2nd STA 30 transmissions that are in resting state that is sent by AP 20.This measurement report is specially measurement report frame or has encapsulated the Frame of measurement report.
Concrete, this AP 20 further comprises:
Measure request receiving element 21, be used to receive the measurement request that a STA 10 sends to the 2nd STA30 that is in resting state.
The request of measuring provides unit 22, be used for when the 2nd STA 30 when resting state enters wake states, the measurement request of measuring 21 receptions of request receiving element is offered the 2nd STA 30.
Measurement report retransmission unit 23 is used to receive the measurement report that the 2nd STA 30 sends according to the request of measurement, and sends to a STA 10.
Judging unit 24, be used for when the measurement request of the 2nd STA 30 transmissions of measuring 21 receptions of request receiving element is measurement request frame, judge whether the 2nd STA 30 is positioned at this Basic Service Set BSS, then notify the request of measurement that the unit is provided when being positioned at, otherwise refuse the measurement request that a STA 10 sends.
Concrete, the 2nd STA 30 specifically comprises:
Measure request receiving element 31, be used to receive the measurement request from a STA 10 that is sent by AP 20, this measurement request is specially measurement request frame or has encapsulated the Frame of the request of measuring.Measurement request in this Frame can obtain by parsing.
Test frame transmitting element 32 is used for sending a test frame to a STA 10 when measurement request receiving element 31 receives the measurement request.
Measurement report transmitting element 33 is used for obtaining receive channel power according to the response frame that a STA 10 returns, and generates measurement report and transmission.This measurement report is specially measurement report frame or has encapsulated the Frame of measurement report.
Second judging unit 34 is used for when receiving the Frame that has encapsulated the request of measurement, judges when a STA 10 and the 2nd STA 30 are positioned at same BSS, is positioned at the same test frame transmitting element transmission test frame of notifying when BSS.
Said system that the application of the invention embodiment provides and device, transmission by AP request of measuring and measurement report, the recipient STA that measures request needn't be in wake states always, thereby saved the energy of STA, solved the STA that is requested to measure and be in battery saving mode and can not receive the problem of asking of measuring.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprises that some instructions are used so that an equipment is carried out the described method of each embodiment of the present invention.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (16)
1, a kind of measuring receiving channel power method is characterized in that, may further comprise the steps:
Receive the measurement request that first stop STA sends to the 2nd STA that is in resting state;
Described the 2nd STA offers described the 2nd STA with described measurement request when resting state enters wake states;
Receive the measurement report that described the 2nd STA sends according to described measurement request, and send to a described STA.
2, measuring receiving channel power method according to claim 1 is characterized in that, the measurement request that a described STA sends to the 2nd STA is measurement request frame or the Frame that has encapsulated the request of measuring.
3, as measuring receiving channel power method as described in the claim 2, it is characterized in that, when the measurement request that a described STA sends to the 2nd STA was measurement request frame, described reception the one STA also comprised after the measurement request that the 2nd STA that is in resting state sends:
When judging that described the 2nd STA is positioned at this Basic Service Set BSS, continue, otherwise refuse the measurement request that a described STA sends.
4, as measuring receiving channel power method as described in the claim 2, it is characterized in that, also comprise before the measurement report that described the 2nd STA of described reception sends according to described measurement request:
Described the 2nd STA receives the request of measurement, directly sends a test frame to a described STA;
Described the 2nd STA obtains receive channel power according to the response frame that a described STA directly returns;
Described the 2nd STA generates measurement report frame according to described receive channel power and sends.
5, as measuring receiving channel power method as described in the claim 2, it is characterized in that, also comprise before the measurement report that described the 2nd STA of described reception sends according to described measurement request:
Described the 2nd STA receives the measurement request that is encapsulated in the Frame, when a described STA and described the 2nd STA are positioned at same BSS, directly sends a test frame to a described STA;
Described the 2nd STA obtains receive channel power according to the response frame that a described STA directly returns;
Described the 2nd STA generates measurement report according to described receive channel power, is encapsulated in the Frame described measurement report and transmission.
As measuring receiving channel power method as described in claim 4 or 5, it is characterized in that 6, described the 2nd STA is specially to the test frame that a STA sends: empty Frame or the test frame that is used to test.
7, a kind of AP device of supporting measuring receiving channel power is characterized in that, comprising:
Measure the request receiving element, be used to receive the measurement request that a STA sends to the 2nd STA that is in resting state;
The request of measuring provides the unit, be used for when described the 2nd STA when resting state enters wake states, the measurement request of described measurement request receiving element reception is offered described the 2nd STA;
The measurement report retransmission unit is used to receive the measurement report that described the 2nd STA sends according to described measurement request, and sends to a described STA.
8, as the AP device of support measuring receiving channel power as described in the claim 7, it is characterized in that, also comprise:
Judging unit is used for allowing described measurement request to provide the unit to send described measurement request to described the 2nd STA when judging that described the 2nd STA is positioned at this Basic Service Set BSS, otherwise refuses the measurement request that a described STA sends.
9, a kind of STA device of supporting measuring receiving channel power is characterized in that, comprising:
Measure the request receiving element, be used to receive the measurement request that sends by AP from another STA;
The test frame transmitting element is used for when described measurement request receiving element receives the measurement request, sends test frame to described another STA that sends described measurement request;
The measurement report transmitting element, the response frame that is used for returning according to described another STA generates measurement report and sends.
10, as the STA device of support measuring receiving channel power as described in the claim 9, it is characterized in that, also comprise:
Second judging unit is used for resolving from the Frame of encapsulation when described measurement request receiving element and obtains the request of measuring, and judges when self STA and described another STA are positioned at same BSS, notifies test frame transmitting element transmission test frame.
11, a kind of STA device of supporting measuring receiving channel power is characterized in that, comprising:
Measure request transmitting unit, be used for sending the request of measurement to another STA that is in resting state by AP;
The measurement report receiving element is used to receive the measurement report by described another STA transmission that described AP sends.
12, as the STA device of support measuring receiving channel power as described in the claim 11, it is characterized in that, also comprise:
The response frame transmitting element when being used to receive the test frame of described another STA transmission, returns a response frame.
13, a kind of system that supports measuring receiving channel power is characterized in that, comprising:
The one STA is used for sending the request of measurement by AP to the 2nd STA that is in resting state;
Access point AP is used to receive described measurement request; When resting state enters wake states, described measurement request is offered described the 2nd STA at described the 2nd STA; Receive the measurement report that described the 2nd STA sends according to described measurement request, and send to a described STA;
The 2nd STA is used to receive the measurement request from a described STA that described AP sends, and generates measurement report and pass through described AP according to described measurement request to send to a described STA.
14, as the system of support measuring receiving channel power as described in the claim 13, it is characterized in that described AP further comprises:
Measure the request receiving element, be used to receive the measurement request that a described STA sends to the 2nd STA that is in resting state;
The request of measuring provides the unit, be used for when described the 2nd STA when resting state enters wake states, the measurement request of described measurement request receiving element reception is offered described the 2nd STA;
The measurement report retransmission unit is used to receive the measurement report that described the 2nd STA sends according to described measurement request, and sends to a described STA.
15, as the system of support measuring receiving channel power as described in the claim 13, it is characterized in that described the 2nd STA specifically comprises:
Measure the request receiving element, be used to receive the measurement request that sends by described AP from a described STA;
The test frame transmitting element is used for sending test frame to a described STA when described measurement request receiving element receives the measurement request;
The measurement report transmitting element, the response frame that is used for returning according to a described STA generates measurement report and sends.
16, as the system of support measuring receiving channel power as described in the claim 13, it is characterized in that a described STA specifically comprises:
Measure request transmitting unit, be used for sending the request of measurement to the 2nd STA that is in resting state by described AP;
The measurement report receiving element is used to receive the measurement report that is sent by described the 2nd STA that is in resting state that is sent by described AP.
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| CN104254139A (en) * | 2013-06-25 | 2014-12-31 | 华为终端有限公司 | Message transmission method, system and station |
| CN105025592A (en) * | 2009-09-18 | 2015-11-04 | 交互数字专利控股公司 | Application method in STA and STA |
| CN105120493A (en) * | 2010-07-26 | 2015-12-02 | 英特尔公司 | Method and devices for multiple station sounding in a wireless local area network |
| CN106604359A (en) * | 2016-10-12 | 2017-04-26 | 惠州市德赛西威汽车电子股份有限公司 | Networking method of mobile phone and plurality of vehicle-mounted WiFi, and WiFi equipment used for same |
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| US7301914B2 (en) * | 2004-06-15 | 2007-11-27 | Motorola, Inc. | Method and apparatus for sending a multicast message |
| JP4826122B2 (en) * | 2005-04-14 | 2011-11-30 | 日本電気株式会社 | Received power measurement method for CDMA mobile communication system and CDMA mobile communication system |
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2008
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