CN105636229A - Downlink message processing/controlling method and device - Google Patents
Downlink message processing/controlling method and device Download PDFInfo
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- CN105636229A CN105636229A CN201410623869.1A CN201410623869A CN105636229A CN 105636229 A CN105636229 A CN 105636229A CN 201410623869 A CN201410623869 A CN 201410623869A CN 105636229 A CN105636229 A CN 105636229A
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Abstract
The present invention provides a downlink message processing/controlling method and device, wherein the method comprises the steps of using a current access point (AP) to receive the uplink messages of same request content sent by a station (STA) to a plurality of APs, wherein the request content requires the plurality of APs to return the downlink messages in response to the uplink messages, and the STA has the type different from the AP; using the current AP to send the uplink messages to a preset downlink message control module to enable the downlink message control module to decide an instruction message of sending the downlink messages to the STA by the current AP according to the uplink messages; using the current AP to receive the indication message sent by the downlink message control module, and using the current AP to send the downlink messages to the STA on the condition that the content of the instruction message is sending. According to the present invention, the time of a media occupied by the invalid probe response can be reduced, thereby achieving the effect of improving the network effective throughput.
Description
Technical field
The present invention relates to the communications field, especially relate to a kind of downstream message process/control method and device.
Background technology
At present, it is more and more extensive that WLAN technology is applied, and typical technology includes Bluetooth technology and follows WLAN (WirelessLocalAreaNetworks, referred to as the WLAN) technology of IEEE802.11 agreement. Wherein, WLAN technology has had been developed that multiple versions such as 802.11a/b/g/n so far, is all operated in the open frequency range near 2.4GHz and 5GHz.
802.11 the initial version of standard completed in 1997, its main thought derives from the Ethernet of 802.3 protocol definition, therefore, 802.11 media get involved key-course (MediumAccessControl, referred to as MAC) have employed the simple distribution formula access protocol identical with Ethernet, i.e. carrier sense multiple (CarrierSenseMultipleAccess, referred to as CSMA). When using CSMA technology, each website (Station in net, referred to as STA) can the transmission of determination data frame and reception independently, each website first has to monitor media before transmitting data: when media are for time idle, website can send data; When media are busy, website needs to postpone and sends data. If plural website is while listening for idle to media and send data, it is likely that can produce conflict the recipient of data, cause that the data that two websites send interfere, cause their data all cannot correctly be demodulated by recipient. Each website can detect whether to there occurs collision, once collide, then then the website collided all can resend time of one section of random-length of rollback, owing to Backoff time is random, therefore can reduce the probability again collided. For cable network, collision can be detected by signal of telecommunication near-real-time. And for wireless network, collision is by being pushed off out when not obtaining the response of the confirmation (ACK) of recipient or other form after whole data are sent completely.
It can be seen that in the wireless network of 802.11 technology of use, whether the free time of media directly affects each website in network and can send the time span of data, therefore also directly affects the handling capacity of network. In order to improve network throughput as far as possible, each website should be reduced as far as possible and send the time span of invalid data by taking media.
In 802.11 agreements, when a website attempts accessing the wireless network using 802.11 agreements, two ways is had to obtain the information of the wireless network that there is currently: (1) access point (AccessPoint, referred to as AP) broadcast and carry service set (ServiceSetIdentifier, referred to as SSID) Beacon, STA be by receiving these Beacon frames and reading SSID and know the existence of wireless network; (2) STA sends the probe requests thereby (ProbeRequest) of detection 802.11 wireless networks, the AP receiving this probe requests thereby can feed back a probe response (ProbeResponse) carrying SSID to STA, and STA just can know the existence of certain wireless network after receiving probe response. When multiple AP broadcast multiple Beacon frame carrying different SSID, or when having fed back multiple ProbeResponse carrying different SSID, STA is it is known that there is multiple different wireless network using 802.11 agreements in current location.
But there is a situation in which: when multiple AP wireless network set up belongs to same expansion service set (ExtendedServiceSet, referred to as ESS), the wireless network that they are set up can use same SSID. In this case, multiple AP (being assumed to be N number of AP) carry identical information to the STA multiple ProbeResponse sent. If these message can both be properly received by STA, so the N-1 bar in this N bar ProbeResponse message is unnecessary, because the information that the last N-1 bar ProbeResponse message that STA receives is carried is just the same with the information that the STA Article 1 ProbeResponse message received is carried. In other words, the time that the last N-1 bar ProbeResponse message that multiple AP send takies media is invalid. Further, when the increasing number of STA, then the ProbeRequest quantity that STA sends also will increase therewith, and this will cause that AP sends more ProbeResponse and then takies more media time. And if do not send these message, media just can be used to send other data more, thus improving the effective throughput of network.
But, send under the probe requests thereby scene with detection wireless network for STA to AP, AP takies too much media time to the STA network detection response replying multiple repetitions, and causes the problem that the effective throughput of network reduces, and prior art and provides effective solution.
Summary of the invention
A kind of downstream message process/control method of offer and device are provided.
In order to achieve the above object, according to an aspect of the present invention, provide a kind of downstream message processing method, it is applied to AP side, including: current access point (AP) receiving station (STA) to the identical upstream message of multiple AP request content sent, wherein, request content is ask multiple AP to return the downstream message in response to upstream message, and STA is the STA of non-AP class; Upstream message is sent to the downstream message pre-set and controls module by current AP, so that whether downstream message controls module and go out by the current AP instruction message to STA transmission downstream message according to upstream message decision-making; Current AP receives downstream message and controls the instruction message that module sends, and when the content indicating message is send, current AP sends downstream message to STA.
Preferably, the set-up mode of downstream message control module includes: be arranged on the inside of AP; Or, it is arranged in independent physical equipment, wherein, physical equipment includes: router, switch or access controller (AC).
Preferably, upstream message is sent to the downstream message that pre-sets and controls module and include by current AP: current AP judges whether upstream message meets the following conditions simultaneously: the recipient address that upstream message is carried is broadcast address; Or, the recipient address that upstream message is carried is multicast address and the mark (BSSID) of set of basic (BSS) set up on current AP belongs to multicast address; Current AP receives the power that receives of upstream message and is higher than the power threshold that can correctly demodulate upstream message; When judged result is for being, upstream message and related news are sent to downstream message and control module by current AP, wherein, when descending message control module is arranged on the inside of current AP, related news include: current AP receives the reception power of upstream message, current AP receives the time that receives of upstream message and the mark of current AP, when descending message control module is arranged in independent physical equipment, related news include: current AP receives the mark receiving power and current AP of upstream message.
Preferably, upstream message and downstream message meet the frame format of media access control layer (MAC) frame of IEEE802.11 protocol definition, and wherein, the recipient address carried in upstream message is broadcast address or multicast address.
Preferably, upstream message is probe requests thereby (ProbeRequest) message, and downstream message is probe response (ProbeResponse) message.
According to another aspect of the present invention, provide a kind of downstream message and process device, it is positioned at access point (AP), including: receiver module, for receiving station (STA) to the identical upstream message of multiple AP request content sent, wherein, request content is ask multiple AP to return the downstream message in response to upstream message, and STA is the STA of non-AP class; Sending module, controls module for upstream message is sent to the downstream message pre-set, so that whether downstream message controls module and go out by the current AP instruction message to STA transmission downstream message according to upstream message decision-making; Processing module, controls, for receiving downstream message, the instruction message that module sends, and when the content indicating message is send, sends downstream message to STA.
Preferably, the set-up mode of downstream message control module includes: be arranged on the inside of AP; Or, it is arranged in independent physical equipment, wherein, physical equipment includes: router, switch or access controller (AC).
Preferably, sending module includes: judging unit, is used for judging whether upstream message meets the following conditions simultaneously: the recipient address that upstream message is carried is broadcast address; Or, the recipient address that upstream message is carried is multicast address and the mark (BSSID) of set of basic (BSS) set up on current AP belongs to multicast address; Current AP receives the power that receives of upstream message and is higher than the power threshold that can correctly demodulate upstream message; Transmitting element, for when the judged result of judge module is for being, upstream message and related news are sent to downstream message and control module, wherein, when descending message control module is arranged on the inside of current AP, related news include: current AP receives the reception power of upstream message, current AP receives the time that receives of upstream message and the mark of current AP, when descending message control module is arranged in independent physical equipment, related news include: current AP receives the mark receiving power and current AP of upstream message.
Preferably, upstream message and downstream message meet the frame format of media access control layer (MAC) frame of IEEE802.11 protocol definition, and wherein, the recipient address carried in upstream message is broadcast address or multicast address.
Preferably, upstream message is probe requests thereby (ProbeRequest) message, and downstream message is probe response (ProbeResponse) message.
According to a further aspect of the invention, additionally provide a kind of downstream message control method, control module including: the downstream message that pre-sets and receive the upstream message that request content that multiple access points (AP) send is identical, wherein, upstream message is that receiving station (STA) sends to multiple AP, request content is ask multiple AP to return the downstream message in response to upstream message, and STA is the STA of non-AP class; Downstream message controls module and receives the practical situation of downstream message according to multiple AP, determines as the target AP needing to return downstream message to STA from multiple AP; Downstream message controls module and sends instruction message to target AP, and wherein, instruction message is used for indicating target AP to send downstream message to STA.
Preferably, the set-up mode of downstream message control module includes: be arranged on the inside of AP; Or, it is arranged in independent physical equipment, wherein, physical equipment includes: router, switch or access controller (AC).
Preferably, downstream message controls module and receives the practical situation of downstream message according to multiple AP, determine as the target AP needing to return downstream message to STA from multiple AP, adopt one of following two mode: mode one, when downstream message controls the inside that module is arranged on AP, after waiting predetermined time interval, control module if placed at the downstream message in current AP and receive other AP upstream message sent, downstream message control module judge other AP receive time of upstream message whether early than or receive time of upstream message equal to current AP, if it is judged that be the no and current AP power power be more than or equal to other AP reception upstream message receiving upstream message, determine that current AP belongs to target AP, and send instruction message to current AP, mode two, when downstream message control module be arranged in independent physical equipment, after waiting predetermined time interval, downstream message controls module and selects to receive prominent AP as target AP from all AP receiving upstream message, and sends instruction message to receiving prominent AP.
Preferably, upstream message and downstream message meet the frame format of media access control layer (MAC) frame of IEEE802.11 protocol definition, and wherein, the recipient address carried in upstream message is broadcast address or multicast address.
Preferably, upstream message is probe requests thereby (ProbeRequest) message, and downstream message is probe response (ProbeResponse) message.
Still another aspect according to the present invention, additionally provide a kind of downstream message and control device, including: the downstream message pre-set controls module, downstream message controls module and includes: receiver module, the upstream message identical for receiving request content that multiple access point (AP) sends, wherein, upstream message is that receiving station (STA) sends to multiple AP, request content is ask multiple AP to return the downstream message in response to upstream message, and STA is the STA of non-AP class; Determine module, for receiving the practical situation of downstream message according to multiple AP, determine as the target AP needing to return to STA downstream message from multiple AP; Sending module, for sending instruction message to target AP, wherein, instruction message is used for indicating target AP to send downstream message to STA.
Preferably, the set-up mode of downstream message control module includes: be arranged on the inside of AP; Or, it is arranged in independent physical equipment, wherein, physical equipment includes: router, switch or access controller (AC).
Preferably, determine that module includes: the first processing unit, for when downstream message controls the inside that module is arranged on AP, after waiting predetermined time interval, control module if placed at the downstream message in current AP and receive other AP upstream message sent, judge other AP receive time of upstream message whether early than or receive time of upstream message equal to current AP, if it is judged that be the no and current AP power power be more than or equal to other AP reception upstream message receiving upstream message, determine that current AP belongs to target AP, and send instruction message to current AP, second processing unit, for when downstream message control module is arranged in independent physical equipment, after waiting predetermined time interval, select to receive prominent AP as target AP from all AP receiving upstream message, and send instruction message to receiving prominent AP.
Preferably, upstream message and downstream message meet the frame format of media access control layer (MAC) frame of IEEE802.11 protocol definition, and wherein, the recipient address carried in upstream message is broadcast address or multicast address.
Preferably, upstream message is probe requests thereby (ProbeRequest) message, and downstream message is probe response (ProbeResponse) message.
Compared with prior art, downstream message process/control method provided by the invention and device, AP can be avoided to STA to reply the ProbeResponse message repeated, reduce media and be deactivated the time that ProbeResponse message takies, thus having reached the effect of the effective throughput improving network.
Accompanying drawing explanation
Fig. 1 is the flow chart of downstream message processing method according to embodiments of the present invention;
Fig. 2 is the structured flowchart that downstream message according to embodiments of the present invention processes device;
Fig. 3 is the structured flowchart that preferred downstream message according to embodiments of the present invention processes device;
Fig. 4 is the flow chart of downstream message control method according to embodiments of the present invention;
Fig. 5 is the structured flowchart that downstream message according to embodiments of the present invention controls device;
Fig. 6 is the structured flowchart that preferred downstream message according to embodiments of the present invention controls device;
Fig. 7 is that downstream message controls the schematic diagram that module is independently arranged according to the preferred embodiment of the invention;
Fig. 8 is that downstream message control module is arranged on the schematic diagram within AP according to the preferred embodiment of the invention;
Fig. 9 A is that downstream message controls the flow chart of the upstream message that AP reception STA sends when module is independently arranged according to the preferred embodiment of the invention;
Fig. 9 B is that downstream message controls the flow chart of the upstream message that descending message control module reception AP forwards when module is independently arranged according to the preferred embodiment of the invention;
Fig. 9 C be according to the preferred embodiment of the invention downstream message control module when being independently arranged AP receive downstream message and control instruction AP that module sends to the STA flow chart replied message;
Figure 10 is that downstream message control module is arranged on the message processing flow-chart within AP according to the preferred embodiment of the invention;
Figure 11 be the raising according to the preferred embodiment of the present invention one eat dishes without rice or wine utilization rate system in structural representation between modules; And
Figure 12 be the raising according to the preferred embodiment of the present invention two eat dishes without rice or wine utilization rate system in modules between schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art obtains under the premise not making creative work, broadly fall into the scope of protection of the invention.
Embodiments providing a kind of downstream message processing method, the method can apply to AP side. Fig. 1 is the flow chart of downstream message processing method according to embodiments of the present invention, as it is shown in figure 1, the method comprises the following steps (step S102-step S106):
Step S102, current access point (AP) receiving station (STA) is to the identical upstream message of multiple AP request content sent, wherein, request content is ask multiple AP to return the downstream message in response to upstream message, and STA is the STA of non-AP class.
Upstream message is sent to the downstream message pre-set and controls module by step S104, current AP, so that whether downstream message controls module and go out by the current AP instruction message to STA transmission downstream message according to upstream message decision-making.
Step S106, current AP receive downstream message and control the instruction message that module sends, and when the content indicating message is send, current AP sends downstream message to STA.
By each step above-mentioned, can be controlled module by downstream message is currently forward the AP decision-making of upstream message to go out whether to reply the downstream message for feeding back to STA, so then need not reply downstream message to STA for other AP, reducing AP and reply the quantity of downstream message to STA, eating dishes without rice or wine free time thus improving.
In a preferred implementation of the embodiment of the present invention, downstream message controls the set-up mode of module can include following two: (1) is arranged on the inside of AP; Or, (2) are arranged in independent physical equipment, and wherein, physical equipment includes: router, switch or access controller (AC).
Certainly, in actual applications, physical equipment is not limited thereto, for instance, there is other network equipment of network trunk function it is also possible that.
In step S104, by upstream message, the downstream message pre-set is sent to for AP and controls module, it is possible to realized by such mode:
Current AP judges whether upstream message meets the following conditions simultaneously: the recipient address that upstream message is carried is broadcast address; Or, the recipient address that upstream message is carried is multicast address and the mark (BSSID) of set of basic (BSS) set up on current AP belongs to multicast address; Current AP receives the power that receives of upstream message and is higher than the power threshold that can correctly demodulate upstream message;
When judged result is for being, upstream message and related news are sent to downstream message and control module by current AP, wherein, when descending message control module is arranged on the inside of current AP, related news include: current AP receives the reception power of upstream message, current AP receives the time that receives of upstream message and the mark of current AP, when descending message control module is arranged in independent physical equipment, related news include: current AP receives the mark receiving power and current AP of upstream message. It is to say, when descending message control module set-up mode difference, the content of related news is different.
In a preferred implementation of the embodiment of the present invention, upstream message and downstream message meet the frame format of media access control layer (MAC) frame of IEEE802.11 protocol definition, wherein, the recipient address carried in upstream message is broadcast address or multicast address. Further, upstream message can be probe requests thereby (ProbeRequest) message, and downstream message can be probe response (ProbeResponse) message. Certainly, it is not limited to this, in actual applications, upstream message and downstream message can also other type of message.
Corresponding to the downstream message processing method that above-described embodiment provides, the embodiment of the present invention additionally provides a kind of downstream message and processes device, is positioned at access point (AP). Fig. 2 is the structured flowchart that downstream message according to embodiments of the present invention processes device, as in figure 2 it is shown, this device includes: receiver module 10, sending module 20 and processing module 30. Wherein:
Receiver module 10, for receiving station (STA) to the identical upstream message of multiple AP request content sent, wherein, request content is ask multiple AP to return the downstream message in response to upstream message, and STA is the STA of non-AP class.
Sending module 20, controls module for upstream message is sent to the downstream message pre-set, so that whether downstream message controls module and go out by the current AP instruction message to STA transmission downstream message according to upstream message decision-making.
Processing module 30, controls, for receiving downstream message, the instruction message that module sends, and when the content indicating message is send, sends downstream message to STA.
It should be noted that process in device at this downstream message, downstream message controls the set-up mode of module can include following two: (1) is arranged on the inside of AP; Or, (2) are arranged in independent physical equipment, and wherein, physical equipment includes: router, switch or access controller (AC).
Processing on the basis of device at downstream message illustrated in fig. 2, the embodiment of the present invention additionally provides a kind of preferably downstream message and processes device. Fig. 3 is the structured flowchart that preferred downstream message according to embodiments of the present invention processes device, as it is shown on figure 3, process in device at this preferred downstream message:
Sending module 20 step that can improve includes: judging unit 22 and transmitting element 24, wherein:
Judging unit 22, is used for judging whether upstream message meets the following conditions simultaneously: the recipient address that upstream message is carried is broadcast address; Or, the recipient address that upstream message is carried is multicast address and the mark (BSSID) of set of basic (BSS) set up on current AP belongs to multicast address; Current AP receives the power that receives of upstream message and is higher than the power threshold that can correctly demodulate upstream message.
Transmitting element 24, for when the judged result of judging unit 22 is for being, upstream message and related news are sent to downstream message and control module, wherein, when descending message control module is arranged on the inside of current AP, related news include: current AP receives the reception power of upstream message, current AP receives the time that receives of upstream message and the mark of current AP, when descending message control module is arranged in independent physical equipment, related news include: current AP receives the mark receiving power and current AP of upstream message.
In device shown in Fig. 2 and Fig. 3, the upstream message that can process and downstream message meet the frame format of media access control layer (MAC) frame of IEEE802.11 protocol definition, wherein, the recipient address carried in upstream message is broadcast address or multicast address. Further, upstream message is probe requests thereby (ProbeRequest) message, and downstream message is probe response (ProbeResponse) message.
The embodiment of the present invention additionally provides a kind of downstream message control method. Fig. 4 is the flow chart of downstream message control method according to embodiments of the present invention, and as shown in Figure 4, the method comprises the following steps (step S402-step S406):
Step S402, the downstream message pre-set control module and receive the upstream message that multiple access points (AP) request content that sends is identical, wherein, upstream message is that receiving station (STA) sends to multiple AP, request content is ask multiple AP to return the downstream message in response to upstream message, and STA is the STA of non-AP class.
Step S404, downstream message control module and receive the practical situation of downstream message according to multiple AP, determine as the target AP needing to return downstream message to STA from multiple AP.
Step S406, downstream message control module and send instruction message to target AP, and wherein, instruction message is used for indicating target AP to send downstream message to STA.
By each step above-mentioned, downstream message controls module decision-making can go out which AP or which AP and is necessary to STA feeding back downlink message from multiple AP receiving upstream message, can avoid multiple AP repeatedly to STA feeding back downlink message, so can reduce taking media time, it is provided that the handling capacity of network.
In a preferred implementation of the embodiment of the present invention, downstream message controls the set-up mode of module can include following two: (1) is arranged on the inside of AP; Or, (2) are arranged in independent physical equipment, and wherein, physical equipment includes: router, switch or access controller (AC). Certainly, in actual applications, downstream message control module can also be arranged in other network relay equipments.
For above-mentioned steps S404, in a preferred implementation of the embodiment of the present invention, it is possible to adopt following mode to realize:
Mode one, when downstream message control module be arranged on the inside of AP, after waiting predetermined time interval, control module if placed at the downstream message in current AP and receive other AP upstream message sent, downstream message control module judge other AP receive time of upstream message whether early than or receive time of upstream message equal to current AP, if it is judged that be the no and current AP power power be more than or equal to other AP reception upstream message receiving upstream message, determine that current AP belongs to target AP, and send instruction message to current AP.
Mode two, when downstream message control module be arranged in independent physical equipment, after waiting predetermined time interval, downstream message controls module and selects to receive prominent AP as target AP from all AP receiving upstream message, and sends instruction message to receiving prominent AP.
Wherein it should be noted that, the selecting mainly to control the set-up mode of module according to downstream message of both implementations is determined, mode one is applicable to control module at downstream message and is arranged on the inner case of AP, and mode two is arranged on the situation individual physical devices suitable in downstream message control module.
In a preferred implementation of the embodiment of the present invention, downstream message controls the upstream message that can control of module and downstream message meets the frame format of media access control layer (MAC) frame of IEEE802.11 protocol definition, wherein, the recipient address carried in upstream message is broadcast address or multicast address. Further, upstream message is probe requests thereby (ProbeRequest) message, and downstream message is probe response (ProbeResponse) message.
Corresponding to the downstream message control method that above-described embodiment provides, the embodiment of the present invention additionally provides a kind of downstream message and controls device. Fig. 5 is the structured flowchart that downstream message according to embodiments of the present invention controls device, as it is shown in figure 5, this device includes: the downstream message pre-set controls module, and downstream message controls module and includes: receiver module 40, determine module 50 and sending module 60. Wherein:
Receiver module 40, the upstream message identical for receiving request content that multiple access point (AP) sends, wherein, upstream message is that receiving station (STA) sends to multiple AP, request content is ask multiple AP to return the downstream message in response to upstream message, and STA is the STA of non-AP class.
Determine module 50, for receiving the practical situation of downstream message according to multiple AP, determine from multiple AP as the target AP needing to return to STA downstream message.
Sending module 60, for sending instruction message to target AP, wherein, instruction message is used for indicating target AP to send downstream message to STA.
In the present embodiment, the set-up mode of downstream message control module can include following two: (1) is arranged on the inside of AP; Or, (2) are arranged in independent physical equipment, and wherein, physical equipment includes: router, switch or access controller (AC).
Further, control on the basis of device at the downstream message shown in Fig. 5, the embodiment of the present invention additionally provides a kind of preferably downstream message and controls device, Fig. 6 is the structured flowchart that preferred downstream message according to embodiments of the present invention controls device, as shown in Figure 6, control in device at this preferred downstream message:
Determine that module 50 may further include: the first processing unit 52 and the second processing unit 54, wherein:
First processing unit 52, for when downstream message controls the inside that module is arranged on AP, after waiting predetermined time interval, control module if placed at the downstream message in current AP and receive other AP upstream message sent, judge other AP receive time of upstream message whether early than or receive time of upstream message equal to current AP, if it is judged that be the no and current AP power power be more than or equal to other AP reception upstream message receiving upstream message, determine that current AP belongs to target AP, and send instruction message to current AP.
Second processing unit 54, for when downstream message control module is arranged in independent physical equipment, after waiting predetermined time interval, select to receive prominent AP as target AP from all AP receiving upstream message, and send instruction message to receiving prominent AP.
In device shown in Fig. 5 and Fig. 6, the upstream message that can control and downstream message meet the frame format of media access control layer (MAC) frame of IEEE802.11 protocol definition, wherein, the recipient address carried in upstream message is broadcast address or multicast address. Further, upstream message is probe requests thereby (ProbeRequest) message, and downstream message is probe response (ProbeResponse) message.
Below in conjunction with accompanying drawing 7 to accompanying drawing 12 and preferred embodiment, the downstream message process/control method and the devices that provide above-described embodiment are further described in more detail and illustrate, in order to that understands above-described embodiment realizes process.
In a preferred embodiment, after AP receives the upstream message of STA, it is possible to this upstream message is sent to downstream message and controls module, and the instruction according to downstream message control module decides whether to reply for the upstream message of STA the downstream message of response. The power at the reception antenna place that upstream message arrives AP should be higher than that the first thresholding (i.e. above-mentioned power threshold, first thresholding is the power level that AP receiver can normally demodulate the radio frames of 802.11 agreements, in general it is-85dBm), AP can correctly demodulate this message.
Realize in process at this preferred embodiment, when descending message control module receive one or more AP transmission about the same upstream message of same STA after, downstream message control module decision-making by which AP to send this upstream message STA reply downstream message.
As with the above discussed embodiment, the set-up mode of downstream message control module has two kinds:
Refer to Fig. 7, Fig. 7 is that downstream message controls the schematic diagram that module is independently arranged according to the preferred embodiment of the invention, i.e. situation (1): downstream message controls module can be independently of the independent physical equipment of AP (such as, router, switch or access controller (AccessController, referred to as AC) in module), downstream message controls can be directly connected to can also be connected by modes such as Ethernets between module and AP, and now all of AP has only to carry out Signalling exchange with downstream message control module.
Refer to Fig. 8, Fig. 8 is that downstream message control module is arranged on the schematic diagram within AP according to the preferred embodiment of the invention, i.e. situation (2): it can also be a module within AP that downstream message controls module, can be directly connected between AP can also be connected by modes such as Ethernets, now each AP needs to carry out Signalling exchange with the downstream message control module being arranged in this AP and other AP, and can synchronize by the mode of global positioning system (GlobalPositioningSystem, referred to as GPS) between AP. Certainly, in actual applications, it is not limited to this.
Below the Message Processing flow process in situation (1) is described:
Fig. 9 A is that downstream message controls the flow chart of the upstream message that AP reception STA sends when module is independently arranged according to the preferred embodiment of the invention, and as shown in Figure 9 A, this flow process includes:
S9A01:AP receives the STA upstream message sent, and performs S9A02.
S9A02: the address if up message is broadcast address or the set of basic (BasicServiceSet for multicast address, the upper foundation of this AP, referred to as BSS) mark BSSID belong to the received signal strength of this multicast address and upstream message higher than the first thresholding (i.e. above-mentioned power threshold, first thresholding is the power level that AP receiver can normally demodulate the radio frames of 802.11 agreements, in general it is-85dBm), then AP performs S9A03; Otherwise, flow process terminates.
The STA upstream message sent, the reception power of the upstream message that STA sends, and the mark of AP are sent to downstream message and control module by S9A03:AP.
Fig. 9 B is that downstream message controls the flow chart of the upstream message that descending message control module reception AP forwards when module is independently arranged according to the preferred embodiment of the invention, and as shown in Figure 9 B, this flow process includes:
S9B01: descending control module receives the upstream message of the AP STA sent, performs S9B02;
S9B02: descending control module judges whether the intervalometer for STA having had been started up setting according to the first propagation delay time (the first propagation delay time is transmit the propagation delay time of signal between AP in the network connecting different AP), if, then perform S9B03, if it is not, then perform S9B04.
S9B03: when the timer expiry set according to the first propagation delay time, in all AP of upstream message that have sent STA to descending control module, descending control module selects the upstream message of STA to receive the AP that power is the strongest, this AP is indicated to reply downstream message to STA, then turn off the intervalometer for STA set according to the first propagation delay time, and this intervalometer is reset.
S9B04: descending control module starts the intervalometer for STA according to the first propagation delay time.
When Fig. 9 C is that downstream message control module is independently arranged according to the preferred embodiment of the invention, AP receives the instruction AP of downstream message control module transmission to the STA flow chart replied message, and as shown in Figure 9 C, this flow process includes:
S9C01:AP receives the instruction of downstream message controller and replys the instruction of downstream message to STA, performs S9C02.
S9C02:AP replys downstream message to STA.
Below the Message Processing flow process in situation (2) is described:
Figure 10 is that downstream message control module is arranged on the message processing flow-chart within AP according to the preferred embodiment of the invention, and as shown in Figure 10, this flow process includes:
S1001:AP receives the STA upstream message sent, and performs S1002.
S1002: be broadcast address if up the address of message or the mark BSSID for multicast address, the upper BSS set up of this AP belongs to this multicast address, and the received signal strength of upstream message accepts power threshold higher than first, then AP performs S1003; Otherwise, flow process terminates.
S1003:AP is by upstream message, and the time that upstream message receives, the mark receiving power level and AP of upstream message is sent to the downstream message in this AP and other AP and controls module.
When the downstream message of S1004:AP controls the upstream message that module receives this AP STA received, after waiting the first propagation delay time (the first propagation delay time is transmit the propagation delay time of signal between AP in the network connecting different AP), judge whether to have received STA this upstream message received from other AP: if it is not, then perform S1008; If it is, perform S1005.
S1005: judge whether that other AP receives the time of message and receives the time of upstream message early than AP: be that then the present invention terminates; Otherwise, S1006 is performed.
S1006: determine whether that other AP and AP receives time of upstream message identical, if it is, perform S1007; If it is not, then perform S1008.
S1007: judge that this AP receives the power level that receives of upstream message and whether receives the reception power level of upstream message be more than or equal to other AP, if it is, perform S1008; If it does not, flow process terminates.
The downstream message of S1008:AP controls module instruction AP and replys downstream message to STA.
S1009: when AP receive this AP downstream message control module indicate its to STA reply downstream message instruction after, the definition according to IEEE80.211, to STA reply downstream message. If AP does not receive the descending control module of this AP and replys the instruction of downstream message to STA, then do not reply downstream message to STA.
Below in conjunction with Figure 11 and Figure 12 and preferred embodiment one and preferred embodiment two, above-described embodiment is conducted further description.
Preferred embodiment below one and preferred embodiment two provide a kind of raising and eat dishes without rice or wine the system of utilization rate, it should be noted that, it is that downstream message processes/control device, the equally possible downstream message process/control method realizing above-described embodiment offer that the system that these two preferred embodiments provide can comprise above-described embodiment offer.
Preferred embodiment one
Figure 11 be the raising according to the preferred embodiment of the present invention one eat dishes without rice or wine utilization rate system in structural representation between modules, refer to Figure 11, in this embodiment, downstream message controls module and is arranged in the router connecting different AP.
When STA wishes the wlan network scanning the existence of its region, the AP Beacon frame sent can be monitored on the one hand, broadcast ProbeRequest can be sent on the one hand.
In the scope that the STA ProbeRequest message sent covers, co-exist in 2 AP:AP1 and AP2. The ProbeRequest message that STA the sends power that receives at the reception antenna place of AP1 and AP2 is all higher than the correct power-85dBm demodulated required for this message.
The distance of AP1 distance STA is 1000 meters, and the distance of AP2 distance STA is 2000 meters. Owing to the aerial spread speed of radio wave is 300000000 meter per seconds, it is 3.33us that the ProbeRequest that therefore STA sends arrives AP1 required time, and arriving AP2 required time is 6.66us.
For AP1, when it receives the STA ProbeRequest message sent and correctly demodulates, it has been found that this message is a broadcast, then this message is sent to downstream message control module by AP1; For AP2, when it receives the STA ProbeRequest message sent and correctly demodulates, it has been found that this message is a broadcast, then this message is sent to downstream message control module by AP2.
Owing to AP1 receives the STA ProbeRequest sent prior to AP2, therefore ProbeRequest message is issued downstream message prior to AP2 and is controlled module by AP1.
When descending message control module receives the AP1 ProbeRequest sent, it does not have receive the message of other AP (i.e. AP2), therefore downstream message control module command AP1 replys downstream message to STA.
When descending message control module receives the AP2 ProbeRequest sent, owing to having received the AP1 ProbeRequest message sent before, therefore downstream message control module will not respond the AP2 message sent.
AP1 according to 802.11 protocol generation ProbeResponse message, and is sent to STA after receiving the instruction replying downstream message to STA that downstream message controls module.
AP2 does not receive downstream message and controls the instruction of module, does not therefore send any message to STA.
Preferred embodiment two
Figure 12 be the raising according to the preferred embodiment of the present invention two eat dishes without rice or wine utilization rate system in modules between schematic diagram, refer to Figure 12, in this embodiment, AP all comprises downstream message control module, different AP is connected by Ethernet.
When STA wishes the wlan network scanning the existence of its region, the AP Beacon frame sent can be monitored on the one hand, broadcast ProbeRequest can be sent on the one hand.
In the scope that the STA ProbeRequest message sent covers, co-exist in 2 AP:AP1 and AP2. The ProbeRequest message that STA the sends power that receives at the reception antenna place of AP1 and AP2 is all higher than the correct power-85dBm demodulated required for this message.
The distance of AP1 distance STA is 1000 meters, and the distance of AP2 distance STA is 2000 meters. Owing to the aerial spread speed of radio wave is 300000000 meter per seconds, it is 3.33s that the ProbeRequest that therefore STA sends arrives AP1 required time, and arriving AP2 required time is 6.66us.
For AP1, when it receives the STA ProbeRequest message sent and correctly demodulates, find that this message is a broadcast, then AP1 by this message and receive this message time and accept power level be sent to this AP downstream message control module, and be sent simultaneously to AP2 downstream message control module; For AP2, when its receive STA send ProbeRequest message and correctly demodulation be, find that this message is a broadcast, then AP2 by this message and receive this message time and accept power level be sent to this AP downstream message control module, and be sent simultaneously to AP1 downstream message control module.
After the downstream message of AP1 controls the ProbeRequest message that module receives AP1 transmission, wait that 20us (transmits minimum frame 64bytes at 100 m ethernet and needs 5us, switch time delay is generally 6-11us), if now the descending control module of AP1 have received the AP2 ProbeRequest sent, then judge that both AP1 and AP2 receive the time of STAProbeRequest message. Owing to AP1 receives the time 3.33us more Zao than AP2 of the STA ProbeRequest sent than AP2 distance STA closer to, AP1, therefore the downstream message of AP1 controls module and receives and order AP1 to reply downstream message to STA.
The downstream message of AP2 controls after module receives the AP2 ProbeRequest message sent, to wait 20us, due to AP1 than AP2 distance STA closer to, AP1 receives the time 3.33us more Zao than AP2 of the ProbeRequest of STA transmission. Therefore the downstream message control module of AP2 will not order AP2 to reply downstream message to STA.
Compared to prior art, above preferred embodiment can make the AP from STA is nearest reply downstream message to STA, other AP then will not reply downstream message to STA, avoid AP and reply the downstream message repeated to STA, reduce invalid downstream message and take the time of media, thus promoting the handling capacity of IEEE802.11 wireless network.
The above is the preferred embodiment of the present invention; it should be pointed out that, for the person of ordinary skill of the art, under the premise without departing from principle of the present invention; can also making some improvements and modifications, these improvements and modifications also should be considered to be encompassed within protection scope of the present invention.
Claims (20)
1. a downstream message processing method, is applied to access point AP side, it is characterised in that including:
Current access point AP receiving station STA is to the identical upstream message of multiple AP request content sent, and wherein, described request content is ask the plurality of AP to return the downstream message in response to described upstream message, and described STA is the STA of non-AP class;
Described upstream message is sent to the downstream message pre-set and controls module by described current AP, so that whether described downstream message controls module and go out by the described current AP instruction message to the described STA described downstream message of transmission according to described upstream message decision-making;
Described current AP receives described downstream message and controls the described instruction message that module sends, and when the content of described instruction message is send, described current AP sends described downstream message to described STA.
2. method according to claim 1, it is characterised in that described downstream message controls the set-up mode of module and includes:
It is arranged on the inside of AP; Or,
Being arranged in independent physical equipment, wherein, described physical equipment includes: router, switch or access controller AC.
3. method according to claim 2, it is characterised in that described upstream message is sent to the downstream message control module pre-set and includes by described current AP:
Described current AP judges whether described upstream message meets the following conditions simultaneously:
The recipient address that described upstream message is carried is broadcast address; Or, the recipient address that described upstream message is carried is multicast address and the mark BSSID of set of basic BSS that sets up on described current AP belongs to described multicast address;
Described current AP receives the power that receives of described upstream message and is higher than the power threshold that can correctly demodulate described upstream message;
When judged result is for being, described upstream message and related news are sent to described downstream message and control module by described current AP, wherein, when described downstream message controls the inside that module is arranged on described current AP, described related news include: described current AP receives the reception power of described upstream message, described current AP receives the mark receiving time and described current AP of described upstream message, when described downstream message control module is arranged in independent physical equipment, described related news include: described current AP receives the mark receiving power and described current AP of described upstream message.
4. according to the method in any one of claims 1 to 3, it is characterized in that, described upstream message and described downstream message meet the frame format of the media access control layer mac frame of IEEE802.11 protocol definition, wherein, the recipient address carried in described upstream message is broadcast address or multicast address.
5. method according to claim 7, it is characterised in that described upstream message is probe requests thereby ProbeRequest message, described downstream message is probe response ProbeResponse message.
6. downstream message processes a device, is positioned at access point AP, it is characterised in that including:
Receiver module, for receiving station STA to the identical upstream message of multiple AP request content sent, wherein, described request content is ask the plurality of AP to return the downstream message in response to described upstream message, and described STA is the STA of non-AP class;
Sending module, controls module for described upstream message is sent to the downstream message pre-set, so that whether described downstream message controls module and go out by the current AP instruction message to the described STA described downstream message of transmission according to described upstream message decision-making;
Processing module, controls, for receiving described downstream message, the described instruction message that module sends, and when the content of described instruction message is send, sends described downstream message to described STA.
7. device according to claim 6, it is characterised in that described downstream message controls the set-up mode of module and includes:
It is arranged on the inside of AP; Or,
Being arranged in independent physical equipment, wherein, described physical equipment includes: router, switch or access controller AC.
8. device according to claim 7, it is characterised in that described sending module includes:
Judging unit, is used for judging whether described upstream message meets the following conditions simultaneously:
The recipient address that described upstream message is carried is broadcast address; Or, the recipient address that described upstream message is carried is multicast address and the mark BSSID of set of basic BSS that sets up on described current AP belongs to described multicast address;
Described current AP receives the power that receives of described upstream message and is higher than the power threshold that can correctly demodulate described upstream message;
Transmitting element, for when the judged result of described judge module is for being, described upstream message and related news are sent to described downstream message and control module, wherein, when described downstream message controls the inside that module is arranged on described current AP, described related news include: described current AP receives the reception power of described upstream message, described current AP receives the mark receiving time and described current AP of described upstream message, when described downstream message control module is arranged in independent physical equipment, described related news include: described current AP receives the mark receiving power and described current AP of described upstream message.
9. the device according to any one of claim 6 to 8, it is characterized in that, described upstream message and described downstream message meet the frame format of the media access control layer mac frame of IEEE802.11 protocol definition, wherein, the recipient address carried in described upstream message is broadcast address or multicast address.
10. device according to claim 9, it is characterised in that described upstream message is probe requests thereby ProbeRequest message, described downstream message is probe response ProbeResponse message.
11. a downstream message control method, it is characterised in that including:
The downstream message pre-set controls module and receives the upstream message that multiple access point AP request content sent is identical, wherein, described upstream message is that receiving station STA sends to the plurality of AP, described request content is ask the plurality of AP to return the downstream message in response to described upstream message, and described STA is the STA of non-AP class;
Described downstream message controls module and receives the practical situation of described downstream message according to the plurality of AP, determines as the target AP needing to return described downstream message to described STA from the plurality of AP;
Described downstream message controls module and sends instruction message to described target AP, and wherein, described instruction message is used for indicating described target AP to send described downstream message to described STA.
12. method according to claim 11, it is characterised in that described downstream message controls the set-up mode of module and includes:
It is arranged on the inside of AP; Or,
Being arranged in independent physical equipment, wherein, described physical equipment includes: router, switch or access controller AC.
13. method according to claim 12, it is characterized in that, described downstream message controls module and receives the practical situation of described downstream message according to the plurality of AP, determine from the plurality of AP as the target AP needing to return to described STA described downstream message, adopt one of following two mode:
Mode one, when described downstream message controls the inside that module is arranged on AP, after waiting predetermined time interval, control module if placed at the described downstream message in current AP and receive other AP described upstream message sent, described downstream message control module judge other AP receive time of described upstream message whether early than or receive time of described upstream message equal to described current AP, if it is judged that be the no and described current AP power power be more than or equal to other AP described upstream message of reception receiving described upstream message, determine that described current AP belongs to described target AP, and send described instruction message to described current AP,
Mode two, when described downstream message control module be arranged in independent physical equipment, after waiting predetermined time interval, described downstream message controls module and selects to receive prominent AP as described target AP from all AP receiving described upstream message, and sends described instruction message to the prominent AP of described reception.
14. the method according to any one of claim 11 to 13, it is characterized in that, described upstream message and described downstream message meet the frame format of the media access control layer mac frame of IEEE802.11 protocol definition, wherein, the recipient address carried in described upstream message is broadcast address or multicast address.
15. method according to claim 14, it is characterised in that described upstream message is probe requests thereby ProbeRequest message, described downstream message is probe response ProbeResponse message.
16. a downstream message controls device, it is characterised in that including: the downstream message pre-set controls module, described downstream message controls module and includes:
Receiver module, the upstream message identical for receiving multiple access point AP request content sent, wherein, described upstream message is that receiving station STA sends to the plurality of AP, described request content is ask the plurality of AP to return the downstream message in response to described upstream message, and described STA is the STA of non-AP class;
Determine module, for receiving the practical situation of described downstream message according to the plurality of AP, determine as the target AP needing to return to described STA described downstream message from the plurality of AP;
Sending module, for sending instruction message to described target AP, wherein, described instruction message is used for indicating described target AP to send described downstream message to described STA.
17. device according to claim 16, it is characterised in that described downstream message controls the set-up mode of module and includes:
It is arranged on the inside of AP; Or,
Being arranged in independent physical equipment, wherein, described physical equipment includes: router, switch or access controller AC.
18. device according to claim 17, it is characterised in that described determine that module includes:
First processing unit, for when described downstream message controls the inside that module is arranged on AP, after waiting predetermined time interval, control module if placed at the described downstream message in current AP and receive other AP described upstream message sent, judge other AP receive time of described upstream message whether early than or receive time of described upstream message equal to described current AP, if it is judged that be the no and described current AP power power be more than or equal to other AP described upstream message of reception receiving described upstream message, determine that described current AP belongs to described target AP, and send described instruction message to described current AP,
Second processing unit, for when described downstream message control module is arranged in independent physical equipment, after waiting predetermined time interval, select to receive prominent AP as described target AP from all AP receiving described upstream message, and send described instruction message to the prominent AP of described reception.
19. the system according to any one of claim 16 to 18, it is characterized in that, described upstream message and described downstream message meet the frame format of the media access control layer mac frame of IEEE802.11 protocol definition, wherein, the recipient address carried in described upstream message is broadcast address or multicast address.
20. system according to claim 19, it is characterised in that described upstream message is probe requests thereby ProbeRequest message, described downstream message is probe response ProbeResponse message.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1689252A (en) * | 2002-08-07 | 2005-10-26 | 埃克斯特里科姆有限公司 | Collaboration between wireless lan access points |
| CN1714301A (en) * | 2002-10-17 | 2005-12-28 | 埃克斯特里科姆有限公司 | Collaboration between wireless lan access points using wired lan infrastructure |
| CN101388841A (en) * | 2008-10-30 | 2009-03-18 | 杭州华三通信技术有限公司 | Probing response frame sending method and apparatus |
| CN101827013A (en) * | 2009-03-05 | 2010-09-08 | 华为技术有限公司 | Method, device and system for balancing multi-gateway load |
| CN102186216A (en) * | 2011-05-09 | 2011-09-14 | 北京傲天动联技术有限公司 | Method for increasing roaming speed of station in wireless network |
| CN102792757A (en) * | 2010-02-09 | 2012-11-21 | Lg电子株式会社 | Method and apparatus of requesting channel access in wireless local area network |
| WO2013165553A1 (en) * | 2012-05-03 | 2013-11-07 | Interdigital Patent Holdings Inc. | Enhanced active scanning in wireless local area networks |
| WO2014042464A3 (en) * | 2012-09-14 | 2014-05-08 | 엘지전자 주식회사 | Method and apparatus for scanning in wireless lan |
| CN104081815A (en) * | 2011-12-15 | 2014-10-01 | 诺基亚公司 | Request-response procedure for wireless network |
| CN104104478A (en) * | 2013-04-12 | 2014-10-15 | 中国移动通信集团公司 | Method and device for sending Probe Response frame in WLAN |
| WO2014176294A2 (en) * | 2013-04-22 | 2014-10-30 | Ethox Chemicals, Llc | Additives to resin compositions for improved impact strength and flexibility |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711220B (en) * | 2012-04-25 | 2015-09-09 | 华为终端有限公司 | A kind of discover method of wireless network and device |
-
2014
- 2014-11-07 CN CN201410623869.1A patent/CN105636229A/en active Pending
-
2015
- 2015-04-07 WO PCT/CN2015/075976 patent/WO2016070567A1/en active Application Filing
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1689252A (en) * | 2002-08-07 | 2005-10-26 | 埃克斯特里科姆有限公司 | Collaboration between wireless lan access points |
| CN1714301A (en) * | 2002-10-17 | 2005-12-28 | 埃克斯特里科姆有限公司 | Collaboration between wireless lan access points using wired lan infrastructure |
| CN101388841A (en) * | 2008-10-30 | 2009-03-18 | 杭州华三通信技术有限公司 | Probing response frame sending method and apparatus |
| CN101827013A (en) * | 2009-03-05 | 2010-09-08 | 华为技术有限公司 | Method, device and system for balancing multi-gateway load |
| CN102792757A (en) * | 2010-02-09 | 2012-11-21 | Lg电子株式会社 | Method and apparatus of requesting channel access in wireless local area network |
| CN102186216A (en) * | 2011-05-09 | 2011-09-14 | 北京傲天动联技术有限公司 | Method for increasing roaming speed of station in wireless network |
| CN104081815A (en) * | 2011-12-15 | 2014-10-01 | 诺基亚公司 | Request-response procedure for wireless network |
| WO2013165553A1 (en) * | 2012-05-03 | 2013-11-07 | Interdigital Patent Holdings Inc. | Enhanced active scanning in wireless local area networks |
| WO2014042464A3 (en) * | 2012-09-14 | 2014-05-08 | 엘지전자 주식회사 | Method and apparatus for scanning in wireless lan |
| CN104104478A (en) * | 2013-04-12 | 2014-10-15 | 中国移动通信集团公司 | Method and device for sending Probe Response frame in WLAN |
| WO2014176294A2 (en) * | 2013-04-22 | 2014-10-30 | Ethox Chemicals, Llc | Additives to resin compositions for improved impact strength and flexibility |
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