CN108012290B

CN108012290B - Method and equipment for processing big data in wireless local area network

Info

Publication number: CN108012290B
Application number: CN201711294603.7A
Authority: CN
Inventors: 郑金珠; 陈小龙
Original assignee: Ruijie Networks Co Ltd
Current assignee: Ruijie Networks Co Ltd
Priority date: 2017-12-08
Filing date: 2017-12-08
Publication date: 2021-05-18
Anticipated expiration: 2037-12-08
Also published as: CN108012290A

Abstract

The invention discloses a method and equipment for processing big data in a wireless local area network, wherein the method comprises the following steps: receiving missing information of missing first key values keys sent by a station STA, wherein the missing information is information sent when the STA currently misses the first key value keys in the key values keys of the stored segmented data according to the key values keys of the segmented data stored in a second network after the STA moves from a first network to the second network, the key values keys correspond to the segmented data one by one, and the key values keys are used for representing the corresponding segmented data; and sending the first key value key and the first segment data corresponding to the first key value key to the STA according to the missing information.

Description

Method and equipment for processing big data in wireless local area network

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for processing big data in a wireless local area network.

Background

In a wireless Local Area network (wlan), different access devices (AP), (access point) cover different areas, and a station (sta) (station) accesses the AP and then accesses the network.

In practical application, different APs are respectively deployed and cover different areas, when an STA is in the coverage of an AP, the STA can acquire data of a corresponding user through a network covered by the AP in the area, for example, in a medical system, a medical worker processes data of a patient in a ward, a mobile medical worker accesses the network through the AP covering the ward, and goes from a PACS (Picture Archiving and communication Systems) server to the ward, a doctor can look up patient examination results stored in the PACS server through a PAD and a mobile ward inspection vehicle, such as CT, multi-layer spiral CT, CR, spiral CT above 16 row, and the like, and the examination results are better for user experience, have larger data volume, and the data volume of a normal Picture is more than 700M (megabyte).

In the prior art, when a user such as a doctor moves in rooms belonging to different networks, when an STA needs to download the same file for multiple times, complete data needs to be transmitted each time, the data size is large, the transmission time is long, and meanwhile retransmission of an air interface message is increased.

Therefore, in the prior art, there are technical problems of low efficiency of processing big data in the wireless local area network and retransmission of air interface messages.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for processing big data in a wireless local area network, which are used for solving the technical problems of low processing efficiency of the big data in the wireless local area network and retransmission of an air interface message in the prior art.

Therefore, the embodiment of the invention provides the following specific technical scheme:

in a first aspect, an embodiment of the present invention provides a method for processing big data in a wireless local area network, which is applied to a wireless controller AC, and includes:

receiving missing information of missing first key values keys sent by a station STA, wherein the missing information is information sent when the STA currently misses the first key value keys in the key values keys of the stored segmented data according to the key values keys of the segmented data stored in a second network after the STA moves from a first network to the second network, the key values keys correspond to the segmented data one by one, and the key values keys are used for representing the corresponding segmented data;

and sending the first key value key and the first segment data corresponding to the first key value key to the STA according to the missing information.

Optionally, the sending the first key value key and the first segment of data corresponding to the first key value key to the STA specifically includes:

determining a Radio frequency ID of the second network where the STA is located, wherein the Radio frequency ID corresponds to Radio frequency one to one;

and sending the first key value key and the first segment data corresponding to the first key value key to the STA through the first Radio frequency corresponding to the Radio frequency ID.

Optionally, before the missing information of the missing first key value key sent by the receiving station STA, the method includes:

receiving data request information sent by the STA through the first network;

acquiring data from a target server according to the data request information;

when the size of the acquired data is larger than a set threshold, the acquired data is divided into a plurality of sections, and each section corresponds to a key value;

and sending the plurality of sections of data and a plurality of key values keys corresponding to the plurality of sections of data to the STA through the first network.

Optionally, the receiving data request information sent by the STA through the first network includes:

and the wireless controller AC acquires the data request information from the CAPWAP echo request message by receiving the CAPWAP echo request message.

Optionally, before the missing information of the missing first key value key sent by the receiving station STA, the method further includes:

carrying a plurality of key values keys corresponding to a plurality of sections of data in a CAPWAP echo response message and sending the CAPWAP echo response message to all networks under a wireless controller AC, so that the plurality of key values keys are stored in all the networks;

wherein the first network and the second network are included in the all networks.

In a second aspect, an embodiment of the present invention further provides a method for processing big data in a wireless local area network, where the method is applied to a station STA, and when the STA moves from a first network to a second network, the method includes:

if the first key value key in the key values key of the stored segmented data is determined to be currently lost by the STA according to the key values key of the stored segmented data in the second network, sending the missing information of the first key value key to the wireless controller AC, wherein the key values key correspond to the segmented data one by one, and the key values key is used for representing the corresponding segmented data;

and receiving and storing a first key value key fed back by the wireless controller AC according to the missing information and first segment data corresponding to the first key value key.

Optionally, the sending the missing information missing the first key value key to the wireless controller AC specifically includes:

and carrying missing information missing the first key value in a CAPWAP echo request message in a TLV format, and sending the CAPWAP echo request message to a wireless controller AC.

Optionally, after the receiving and storing the first key value key fed back by the AC according to the missing information and the first segment data corresponding to the first key value key, the method includes:

splicing the first segment data and other segment data cached in the STA cache into complete data;

and displaying the spliced complete data.

In a third aspect, an embodiment of the present invention further provides a wireless controller AC, including:

the receiving unit is used for receiving missing information of missing first key values keys sent by a station STA, wherein the missing information is sent when the STA currently misses the first key value key in the key values keys of the stored segmented data according to the key values keys of the segmented data stored in the second network after the STA moves from a first network to a second network, the key values keys correspond to the segmented data one by one, and the key values keys are used for representing the corresponding segmented data;

and the sending unit is used for sending the first key value key and the first segment data corresponding to the first key value key to the STA according to the missing information.

Optionally, the method includes:

a determining unit, configured to determine a Radio frequency ID of the second network where the STA is currently located, where the Radio frequency ID corresponds to Radio frequencies one to one;

and the first transmitting subunit is configured to transmit the first key value key and the first segment data corresponding to the first key value key to the STA through the first Radio frequency corresponding to the Radio frequency ID.

Optionally, the method includes:

a first receiving subunit, configured to receive data request information sent by the STA through the first network;

the acquisition unit is used for acquiring data from the target server according to the data request information;

the segmentation unit is used for segmenting the acquired data into a plurality of segment data when the size of the acquired data is larger than a set threshold, wherein each segment data corresponds to a key value;

a second sending unit, configured to send the STA through the first network using the plurality of segment data and a plurality of key values key corresponding to the plurality of segment data.

Optionally, the method includes:

a third sending unit, configured to carry multiple key values keys corresponding to the multiple pieces of segment data in a CAPWAP echo response message and send the message to all networks under the wireless controller AC, so that the all networks store the multiple key values keys;

In a fourth aspect, an embodiment of the present invention further provides a station STA, where when the STA moves from a first network to a second network, the station STA includes:

the determining unit is configured to, if it is determined that the STA currently lacks a first key value key of the key values of the stored segment data according to the key values key of the segment data stored in the second network, send missing information that the first key value key is missing to the wireless controller AC, where the key values key correspond to the segment data one to one, and the key values key is used to represent the corresponding segment data;

and the receiving unit is used for receiving and storing a first key value key fed back by the wireless controller AC according to the missing information and first segment data corresponding to the first key value key.

Optionally, the method includes:

and the sending unit is used for carrying missing information missing the first key value in a CAPWAP echo request message in a TLV format, and sending the CAPWAP echo request message to a wireless controller AC.

Optionally, the method includes:

the splicing unit is used for splicing the first segment data and other segment data cached in the STA cache into complete data;

and the display unit is used for displaying the spliced complete data.

In a fifth aspect, an embodiment of the present invention further provides an apparatus, including:

at least one processor, and

a memory coupled to the at least one processor;

the memory stores instructions executable by the at least one processor, and the at least one processor executes the instructions stored in the memory to perform a method for processing big data in a wireless local area network as described above.

In a sixth aspect, an embodiment of the present invention further provides a computer-readable storage medium:

the computer readable storage medium stores computer instructions, which when executed on a computer, cause the computer to execute a method for processing big data in a wireless local area network as described above.

One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:

according to the technical scheme, missing information of missing first key values keys sent by a receiving station STA is adopted, wherein the missing information is sent when the STA currently misses the first key values keys in the key values keys of the stored segmented data according to the key values keys of the segmented data stored in a second network after the STA moves from the first network to the second network, the key values keys correspond to the segmented data one by one, and the key values keys are used for representing the corresponding segmented data; and according to the missing information, sending the first key value key and the first segment data corresponding to the first key value key to the STA.

That is, a station STA moves to another Radio under one Radio of the same access device AP, or when the station STA moves from one access device AP to another access device AP, the STA only needs to send the missing key value key (i.e. the key value key corresponding to the part of data that has not been received yet) to the wireless control device AC, so that the wireless control device AC transmits only the missing key value key and the part of data corresponding to the missing key value key, therefore, the situations of low data processing efficiency and air interface message retransmission caused by the need of retransmitting complete data in the prior art are avoided, therefore, the method can effectively solve the technical problem of low efficiency of processing the big data in the wireless local area network in the prior art, and has the advantages of improving the efficiency of processing the big data in the wireless local area network and reducing the retransmission of the empty messages.

Meanwhile, in the embodiment of the invention, the wireless control device AC only sends the missing key value key and the part of data corresponding to the missing key value key to the Radio frequency Radio under the access device AP where the STA is located, so that the situation that in the prior art, when data is transmitted, the wireless control device AC transmits the data to each Radio frequency Radio under the access device AP, and the network resource is excessively consumed is avoided, and the beneficial technical effect of saving the network resource is also achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

Fig. 1 is a schematic structural diagram of a big data processing system in a wireless local area network according to an embodiment of the present invention;

fig. 2 is a flowchart of a method for processing big data in a wireless local area network according to an embodiment of the present invention;

FIG. 3 is a flow chart of some steps that may also be performed before step S101 in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a control packet of the CAPWAP protocol in the embodiment of the present invention;

FIG. 5 is a diagram illustrating the structure of message content encapsulated in TLV format according to an embodiment of the present invention;

fig. 6 is a flowchart illustrating a specific implementation manner of step S102 in the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the technical solutions of the present invention. All other embodiments obtained by a person skilled in the art without any creative effort based on the embodiments described in the present document belong to the protection scope of the technical solution of the present invention.

Referring to fig. 1, a system for processing big data in a wireless local area network according to an embodiment of the present invention includes: the present invention relates to a PACS (Picture Archiving and Communication Systems) server, in which various image data are stored in the PACS server, a wireless controller AC connected to the PACS server is connected to a plurality of access devices AP, each access device AP covers a certain area, and further a station STA entering the area accesses the network by accessing the access device AP in the area, where the STA may be any mobile device with a display function, such as a PAD, a mobile ward-round vehicle, a mobile phone, etc., and this is not intended to be exhaustive nor limited.

In practical applications, each access device AP may include a plurality of Radio frequencies, for example, 10 Radio frequencies, or 20 Radio frequencies, or 32 Radio frequencies, in this embodiment, specifically, each access device AP includes 32 Radio frequencies, for convenience of description, the 32 Radio frequencies included in the access device AP are respectively referred to as Radio1, Radio2, Radio3, and Radio4 … Radio32, so that in a specific practical process, each Radio frequency in the access device AP may be placed in a region (for example, a room), and a network formed by the Radio frequencies may cover the region, so that the STA in the region may perform data transmission through the Radio frequency under the access device AP.

In practical applications, an STA may move between areas covered by different Radio frequencies in one access device, that is, between different Radio frequencies in the same access device, for example, moving from Radio frequency 1 in access device AP1 to Radio frequency 2 in access device AP 1; the STA may also move from one access device to another, that is, between different access devices, for example, the STA moves from Radio1 in access device AP1 to Radio1 in access device AP 2.

The following provides a method for processing big data in a wireless local area network, which is applied to the above system, and as shown in fig. 2, the method includes:

step S101: receiving missing information of missing first key values keys sent by a station STA, wherein the missing information is information sent when the STA currently misses the first key value keys in the key values keys of the stored segmented data according to the key values keys of the segmented data stored in a second network after the STA moves from a first network to the second network, the key values keys correspond to the segmented data one by one, and the key values keys are used for representing the corresponding segmented data;

step S102: and sending the first key value key and the first segment data corresponding to the first key value key to the STA according to the missing information.

Referring to fig. 3, in practical applications, before the method in the embodiment of the present invention performs the step S101, the following steps may be further performed:

step S201: receiving data request information sent by the STA, wherein the data request information is information sent by the STA when the STA is in the first network;

step S202: responding to the data request information, and acquiring data from a target server;

step S203: when the size of the acquired data is larger than a set threshold, the acquired data is divided into a plurality of sections of data, each section of data corresponds to a key value key, and the key value key is used for representing the corresponding section of data;

step S204: and sending the plurality of sections of data and a plurality of key values keys corresponding to the plurality of sections of data to the STA through the first network.

Referring to fig. 1, in a specific practical process, when the STA is located in an area where Radio frequency Radio1 of access device AP1 is located, the STA may associate with access device AP1 through Radio frequency Radio1, and further, access the network area formed by Radio frequency Radio1 under access device AP1, where the access device AP1 may actively obtain relevant self-defined information of the STA associated with the access device AP1, where the relevant self-defined information carries image data request information sent by the STA to the wireless controller AC, and then, the access device AP1 encapsulates the relevant self-defined information of the STA in a CAPWAP message through a CAPWAP tunnel, and sends the CAPWAP message to the wireless controller AC through the CAPWAP tunnel.

After receiving the CAPWAP message, the wireless control terminal AC requests a target server to send corresponding data according to the data request information in the CAPWAP message, and the target server will respond to the request of the wireless control terminal AC and send the corresponding data to the wireless control terminal AC, in a specific practical process, the data request information in the CAPWAP message may specifically be image data request information, and may also be other types of data request information, when the data request information in the CAPWAP message is the image data request information, the target server may be a PACS server for storing image data, when the data request information in the CAPWAP message is other types of data request information, the target server may be a corresponding server for storing other types of data, in the embodiment of the present invention, specifically, the data request information in the CAPWAP message is the image data request information, and the target server is a PACS server for storing image data as an example, the method in the examples of the present invention will be explained.

Specifically, after the wireless control terminal AC receives the CAPWAP message carrying the image data request information, the wireless control terminal AC may request the PACS server to send corresponding image data according to the image data request information in the CAPWAP message, and the PACS server may respond to the request of the wireless control terminal AC and send the corresponding image data to the wireless control terminal AC.

Certainly, in practical applications, when the STA is associated with the access device AP1 through the Radio frequency Radio1, the wireless controller AC may further obtain the MAC address of the STA through the access device AP1, and perform timing when obtaining the MAC address of the STA, so that when the time reaches a period, the wireless controller AC sends a probe message to the access device AP1 and the other access devices AP connected to the wireless controller AC, where the probe message is used to periodically detect the content of a message from the STA by the access device AP, and when the access device AP1 and the other access devices AP connected to the wireless controller AC receive the probe message sent by the wireless controller AC, the probe message sent by the wireless controller AC is responded through the CAPWAP echo response message.

Referring to fig. 4 and fig. 5, in practical applications, the CAPWAP echo message for responding to the probe message is a control message of the CAPWAP protocol as shown in fig. 4, where the control message of the CAPWAP protocol includes an IP message header, a UDP message header, a CAPWAP control layer, and message contents, where the CAPWAP protocol is based on IP and UDP protocols, and conversely, the CAPWAP message is first an IP and UDP message. The message content in the CAPWAP echo response message is represented by the TLV format shown in fig. 5, and includes STA-related custom parameter information and AP operation information related to vendor information and location information, which may be encapsulated in the CAPWAP message by the TLV format, and integrates some advantages of the CAPWAP channel, such as NAT traversal and security features, which are not described herein.

After receiving the image data sent by the PACS server, the wireless control terminal AC first determines whether the size of the image data is greater than a set threshold, and when the size of the image data is greater than the set threshold, segments the image data. In practical applications, the setting threshold may be set according to actual needs, for example, 300M (mega), 550M, 1G, and the like, and in this embodiment, specifically, the setting threshold is 300M, and the image data is 600M, for example, then the size of the image data is larger than the setting threshold 300M, so that the wireless control terminal AC segments the image data.

In a practical process, the wireless control terminal AC may divide the video data with a size of 600M into 3 segments of data according to a size of 200M per segment of video data, where the size of each segment of video data is 200M, and for convenience of description, the divided 3 segments of video data are respectively referred to as PA1, PA2, and PA3, and the AC also respectively encodes the 3 segments of video data, that is, PA1, PA2, and PA3, to obtain a Key value Key of each segment of data, and the Key value Key corresponding to each segment of data is used to represent the segment of data.

Here, it is assumed that PA1 corresponds to Key value Key1, PA2 corresponds to Key value Key2, and PA3 corresponds to Key value Key3, then, the wireless controller AC transmits Key value Key1 corresponding to PA1, Key value Key2 corresponding to PA2, Key value Key3 corresponding to PA3, and Radio frequency 1 of the segmented image data PA1, PA2, and PA3, which are accessed to the AP1, to the STA through Radio frequency 1. Meanwhile, the AC may also perform the following steps:

carrying a plurality of key values keys corresponding to the plurality of segment data in a CAPWAP echo request message and sending the CAPWAP echo request message to all networks under a wireless controller AC, so that all networks can store the plurality of key values keys; wherein the first network and the second network are included in the all networks.

That is, the wireless controller AC also sends the Key value Key1, the Key value Key2, and the Key value Key3 to all access device APs connected to the AC through a CAPWAP echo request message, so that the access device APs update in real time, that is, the data segmentation and transmission conditions under the AP1 where the current STA is located are also saved. In a specific practical process, the wireless controller AC may specifically carry the Key value Key1, the Key value Key2, and the Key value Key3 in the message content in the CAPWAP echo request message, and further send the Key value Key1, the Key value Key2, and the Key value Key3 to all access devices AP connected to the wireless controller AC through the CAPWAP echo request message.

In this embodiment, as shown in fig. 1, the access device AP connected to the wireless network controller AC includes an access device AP1, an access device AP3, and an access device AP3, so that the wireless network controller AC will carry the Key value Key1, the Key value Key2, and the Key value Key3 in the message content of the CAPWAP echo request message, and further send the Key value Key1, the Key value Key2, and the Key value Key3 to the access device AP1, the access device AP3, and the access device AP3, respectively, through the CAPWAP echo request message.

In practical applications, in a process that the STA receives, through the Radio frequency Radio1, the Key value Key1 corresponding to the PA1, the Key value Key2 corresponding to the PA2, the Key value Key3 corresponding to the PA3, and the segmented image data PA1, PA2, and PA3, which are sent by the wireless controller AC, the STA may move from a region where the Radio frequency Radio1 under the access device AP1 is currently located to a region where the Radio frequency Radio2 under the access device AP1 is currently located, that is, move between the same access devices; the STA may also move from the area where the Radio frequency 1 under the AP1 is currently located to the area where the Radio frequency under another AP is located, that is, between different APs, for example, from the area where the Radio frequency 1 under the AP1 is located to the area where the Radio frequency 2 under the AP2 is located.

No matter the STA moves between the same access device or different access devices, the STA may not have received the Key value Key1 corresponding to PA1, the Key value Key2 corresponding to PA2, the Key value Key3 corresponding to PA3 and the segmented image data PA1, PA2 and PA3 sent by the wireless controller AC, for example, when the STA only receives the Key value Key1 and PA1 corresponding to PA1, the STA moves from the area where the Radio frequency 1 under the access device AP1 is located to the area where the Radio frequency 2 under the access device AP2 is located, so that the Key value Key2 corresponding to PA2, the Key value Key3 corresponding to PA3, and the segmented image data PA2 and PA3 are not received.

If the STA only receives the Key value Key1 and PA1 corresponding to the PA1, and the Key value Key2 and PA2 corresponding to the PA2, the STA moves from the area where the Radio frequency Radio1 under the AP1 currently exists to the area where the Radio frequency Radio2 under the AP1 currently exists, so that the Key value Key3 and the segmented image data P PA3 corresponding to the PA3 are not received. At this time, the above step S101 is executed: and receiving missing information of missing first key values key sent by a station STA, wherein the missing information is information sent when the STA currently misses the first key values key according to segment data key values key stored in a second network after the STA moves from a first network to the second network.

In practical applications, an STA may determine whether the STA currently moves from one area to another area through a probe packet periodically transmitted by an AC, specifically, when the STA moves from an area where a Radio frequency 1 of an access device AP1 currently exists to an area where a Radio frequency 2 of an access device AP1 currently exists, the STA may know that the STA currently moves through the probe packet periodically transmitted by the AC, and at this time, the STA may query an identifier of the area where the STA currently exists from the AP1, and since the STA is currently located in the area where the Radio frequency 2 of the access device AP1 exists, the AP1 may feed back the identifier of the Radio frequency 2 of the AP1, such as the MAC address of the Radio frequency 2, to the STA, according to the identifier of the Radio frequency 2 fed back by the AP1, it may be determined that the STA is currently located in a Radio frequency 2 network where the access device AP1 exists, that the STA moves from the area where the Radio frequency 1 of the access device AP1 to the area where the Radio frequency 2 of the access device AP1, since the access device AP1 stores the Key values corresponding to the segmented data, i.e., the Key value Key1, the Key value Key2, and the Key value Key3, the STA can query all the Key values Key of the image data through the access device AP1, and further determine which data segments corresponding to the Key values are not received by the STA.

It is assumed here that after receiving the Key value Key1 and the Key value Key2, and the piece data PA1 corresponding to the Key value Key1 and the piece data PA2 corresponding to the Key value Key2 under the Radio frequency Radio1 of the access device AP1, the STA moves to the Radio frequency 2 of the access device AP1, and then the STA can determine that the STA currently lacks the Key value Key3 through the Key value Key queried by the access device AP1, that is, does not receive the Key value Key3 and the piece data PA3 corresponding to the Key value Key3, and at this time, the STA carries the missing information of the missing Key value Key3 in a wap echo request message in a TLV format and sends the missing information to the wireless controller AC.

Then, the wireless controller AC receives the CAPWAP echo request message and further receives the missing information carried in the CAPWAP echo request message, and then the method in the embodiment of the present invention executes step S102: and responding to the missing information, and sending a first key value key and first segment data corresponding to the first key value key to the STA.

Referring to fig. 6, in practical applications, the step S102 may be further implemented in the following manner:

step S301: determining a Radio frequency ID of the second network where the STA is located, wherein the Radio frequency ID corresponds to Radio frequency one to one;

step S302: and sending the first key value key and first segment data corresponding to the first key value key to a first Radio frequency (Radio) corresponding to the Radio frequency (Radio ID), and further sending the first key value key and the first segment data to the STA through the first Radio frequency.

In practical application, each Radio frequency under the access device AP1 corresponds to one Radio frequency ID, and then after the wireless controller AC receives the missing information carried in the CAPWAP echo request message, the wireless controller AC can determine the Radio frequency ID of the Radio frequency 2 under the access device AP1, which indicates that the Radio frequency ID 2 under the access device AP1 where the STA is currently located, and then the wireless controller AC sends the missing Key value Key3 and the segmented image data PA3 corresponding to the Key value Key3 to the Radio frequency 2 under the access device AP1, and further sends the Key value Key3 and the segmented image data PA3 corresponding to the Key value Key3 to the STA through the Radio frequency 2 under the access device AP 1.

Specifically, when the STA moves from the area where the Radio frequency 1 under the AP1 is located to the area where the Radio frequency 3 under the AP2 is located, the STA can know that the STA is currently moving through the probe message periodically sent by the AC, and at this time, the STA queries the AP2 for the identifier of the area where the STA is currently located, because the STA is currently located in the area where the Radio frequency 3 under the AP2 is located, the AP2 feeds back the identifier of the Radio frequency 3 of the AP1, such as the MAC address of the Radio frequency 3, to the STA, and the STA can determine the network where the Radio frequency 3 currently located under the AP2 is located according to the identifier fed back by the AP1, since the access device AP2 stores the Key values corresponding to the segmented data after the segmentation of the video data, i.e. the Key value Key1, the Key value Key2 and the Key value Key3, therefore, the STA will query the key value key through the access device AP 2.

It is assumed here that, before the STA moves to the access device AP2, that is, before the STA moves to the Radio frequency Radio1 under the access device AP1, the STA only receives the Key value Key1, the Key value Key2, and the segmented data PA2 corresponding to the segmented data PA1 and the Key value Key2 corresponding to the Key value Key1, and then, the STA queries the Key value Key through the access device AP2, and can determine that the Key value Key3 is currently missing, that is, the Key value Key3 is not received, and the segmented data PA3 corresponding to the Key value Key3 is not received, and at this time, the STA carries missing information of the missing Key value Key3 in TLV format in a CAPWAPecho request message and sends the missing information to the wireless controller AC.

Then, the wireless controller AC receives the CAPWAP echo request message, and further receives the missing information carried in the CAPWAP echo request message, and then, the wireless controller AC responds to the missing information, and the wireless controller AC can determine the Radio frequency ID of the Radio frequency 3 under the access device AP2, which indicates that the STA is currently located under the access device AP2, and then the wireless controller AC sends the missing Key value Key3 and the segmented image data PA3 corresponding to the Key value Key3 to the Radio frequency 3 under the access device AP2, and further sends the Key value Key3 and the segmented image data PA3 corresponding to the Key value Key3 to the STA through the Radio frequency 3 under the access device AP 2.

Therefore, by the above method, that is, the STA moves to another Radio under one Radio of the same AP, or when the station STA moves from one access device AP to another access device AP, the STA only needs to send the missing key value key (i.e. the key value key corresponding to the part of data that has not been received yet) to the wireless control device AC, so that the wireless control device AC transmits only the missing key value key and the part of data corresponding to the missing key value key, therefore, the situations of low data processing efficiency and air interface message retransmission caused by the need of retransmitting complete data in the prior art are avoided, therefore, the method can effectively solve the technical problems of low processing efficiency of the big data under the wireless local area network and retransmission of the empty message in the prior art, and has the advantages of improving the processing efficiency of the big data under the wireless local area network and reducing the retransmission of the empty message.

Certainly, in practical applications, after the STA receives the Key value Key3 sent by the wireless controller AC and the segmented image data PA3 corresponding to the Key value Key3, at this time, the STA receives all parts of the image data requested by the STA, and the STA may splice the received segmented image data PA1 corresponding to the Key value Key1, the segmented image data PA2 corresponding to the Key value Key2, and the segmented image data PA3 corresponding to the Key value Key3 into complete image data, and then display the spliced complete image data.

Based on the same inventive concept, an embodiment of the present invention provides a method for processing big data in a wireless local area network, which is applied to a station STA, and when the STA moves from a first network to a second network, the method includes:

and displaying the spliced complete data.

Based on the same inventive concept, the embodiment of the present invention provides a wireless controller AC, and for specific implementation of a method for processing big data in a wireless local area network of the wireless controller AC, reference may be made to the description of the above method embodiment, and repeated details are not described again, where the wireless controller AC includes:

Optionally, the method includes:

Based on the same inventive concept, embodiments of the present invention provide a station STA, where specific implementation of a method for processing big data in a wireless local area network of the station STA may refer to the description of the above method embodiment, and repeated details are not described, and the station STA includes:

Optionally, the method includes:

and the display unit is used for displaying the spliced complete data.

Based on the same inventive concept, an embodiment of the present invention provides an apparatus, including:

at least one processor, and

a memory coupled to the at least one processor;

Based on the same inventive concept, embodiments of the present invention provide a computer-readable storage medium:

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for processing big data under a wireless local area network is applied to a wireless controller (AC), and is characterized by comprising the following steps:

2. The method of claim 1, wherein the sending the first key value key and the first segment of data corresponding to the first key value key to the STA specifically comprises:

3. The method according to claim 1 or 2, wherein prior to the missing information of the missing first key value key transmitted by the receiving station STA, the method comprises:

receiving data request information sent by the STA through the first network;

acquiring data from a target server according to the data request information;

4. The method of claim 1, wherein before the receiving station STA transmits the missing information missing the first key value key, the method further comprises:

5. A method for processing big data in a wireless local area network is applied to a Station (STA), and when the STA moves from a first network to a second network, the method comprises the following steps:

6. The method according to claim 5, wherein the sending the missing information of the missing first key value key to the wireless controller AC specifically includes:

7. The method of claim 5 or 6, wherein after the receiving and saving the first key value key fed back by the AC according to the missing information and the first segment of data corresponding to the first key value key, the method comprises:

and displaying the spliced complete data.

8. A wireless controller (AC), comprising:

9. The wireless controller AC of claim 8, comprising:

10. The wireless controller AC according to claim 8 or 9, comprising:

11. The wireless controller AC according to claim 10, comprising:

12. A Station (STA), when the STA moves from a first network to a second network, comprising:

13. The STA of claim 12, comprising:

14. The STA of claim 12 or 13, comprising:

and the display unit is used for displaying the spliced complete data.