CN103313303A - Wireless access point, wireless work station and work method of wireless access point and wireless work station - Google Patents
Wireless access point, wireless work station and work method of wireless access point and wireless work station Download PDFInfo
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- CN103313303A CN103313303A CN2012100592452A CN201210059245A CN103313303A CN 103313303 A CN103313303 A CN 103313303A CN 2012100592452 A CN2012100592452 A CN 2012100592452A CN 201210059245 A CN201210059245 A CN 201210059245A CN 103313303 A CN103313303 A CN 103313303A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a wireless access point, a wireless work station and a work method of the wireless access point and the wireless work station. The method is characterized in that an agent mechanism is adopted so that a sleep mode can be conducted on the wireless access point under a condition that a communication session from a client terminal application module of the wireless work station to an application service module of a remote server is kept alive. Therefore, a sleep time is greatly prolonged and an energy-saving effect is enhanced. Besides, different requirements of top services are also considered by the invention. A communication transmission mode between the wireless access point and the wireless work station is adjusted under the condition of guaranteeing a user experience. Flexible sleep modes are provided based on different services requirements so that a sleep/work switch frequency is reduced and an energy-saving efficiency is enhanced.
Description
Technical field
The present invention relates to a kind of wireless communication field, be specifically related to a kind of WAP (wireless access point), wireless stations and method of work separately.
Background technology
WAP (wireless access point) (AP, Access Point) is responsible for a plurality of wireless stations (STA, Station) network insertion, one the typical case use as shown in Figure 1: among the figure under the scene WAP (wireless access point) can be called as mobile router (Mobile Router) again, the one end provides WiFi access service to wireless stations, the other end is by 3G (Third Generation) Moblie technology (The Third Generation, 3G) wireless network access far-end server (Server); Wireless stations specifically can be WiFi work station (WiFi Station) in the scene shown in the figure, and it links to each other with WAP (wireless access point) by the WiFi interface.Be arranged in the client application module (Client App) of wireless stations among the figure by the foundation of the communication session (communication session) between the server application modules of wireless stations and WAP (wireless access point) realization and far-end server, this communication session is set up based on communication protocol 1.
Here it is to be noted, wireless access technology among the present invention between WAP (wireless access point) and the wireless stations is not limited to the wireless technology based on IEEE 802.11 (WiFi) shown in Fig. 1, also can be the wireless technology of Ultra-Mobile Broadband (UMB), IEEE 802.16 (WiMAX), IEEE 802.20 etc.And, the interconnection technique of WAP (wireless access point) and far-end server also is not limited to 3G wireless network access way among the present invention, it can also be any other wireless access way, as 3GPP Long Term Evolution (LTE)/enhancement mode LTE (LTE-A) etc., can certainly adopt various existing wired modes to insert.
A WAP (wireless access point) may need to intercom mutually with a plurality of wireless stations, so the energy consumption of WAP (wireless access point) will be far longer than wireless stations.In recent years, along with the rise of environmental protection concept and the generation of portable access point, WAP (wireless access point) Research on Saving Energy and discussion are increasingly extensive.How to design the working method of WAP (wireless access point)/work station, can reach the dormancy of supporting WAP (wireless access point) better to reduce the access point energy consumption, become a hot issue.
Summary of the invention
In view of this, one of purpose of some embodiment of the present invention provides a kind of WAP (wireless access point), wireless stations and method of work separately, can provide support for the dormancy of WAP (wireless access point), makes WAP (wireless access point) can reduce power consumption.
For solving the problems of the technologies described above, certain embodiments of the invention provide scheme as follows:
A kind of method of work of WAP (wireless access point), be provided with access point proxy module and radio interface module in the described WAP (wireless access point), described WAP (wireless access point) can be communicated by letter with wireless stations by radio interface module, be provided with work station proxy module and client application module in the described wireless stations, described method comprises:
Steps A, described access point proxy module, represent described client application module, first communication session between foundation and maintenance and the far-end server, wherein, described work station proxy module represents described far-end server, and sets up between the described client application module and safeguard third communication session is arranged;
Step B, described access point proxy module is by the flow of described first communication session reception from far-end server, transmission mode to described flow is changed, and according to the transmission mode after the conversion, by and described work station proxy module between the second communication session of setting up, send described flow to described work station proxy module;
Wherein, the transmission mode after the described conversion makes the efficiency of transmission of described flow in described second communication session be improved, and is shortened the session duration of described second communication session.
According to some embodiment of the present invention, above-mentioned method of work can also comprise:
At described traffic transport tempus intercalare and/or after described flow transmission finishes, control described radio interface module dormancy.
According to some embodiment of the present invention, in the above-mentioned method of work, described steps A can comprise:
The access point proxy module receives the communication request of the described client application module of described work station proxy module forwarding, described communication request is that described client application module is initiated to far-end server, and described communication request makes described work station proxy module represent described far-end server, and sets up between the described client application module and safeguard third communication session is arranged;
Described access point proxy module represents described client application module, first communication session between foundation and maintenance and the far-end server.
According to some embodiment of the present invention, in the above-mentioned method of work, described step B can comprise:
Step B1, described access point proxy module are by described first communication session, and reception and buffer memory are from the flow of far-end server;
Step B2, described access point proxy module is changed the transmission mode of described flow according to the service attribute of described flow, and according to the transmission mode after the conversion, sends described flow by described second communication session to described work station proxy module.
According to some embodiment of the present invention, in the above-mentioned method of work,
When the service attribute of described flow was the monofile non-real time service, described step B2 comprised:
Described access point proxy module is when the described flow of buffer memory reaches default size or cache-time and reaches default thresholding, with the flow of burst transmission mode by described second communication session transmission buffer memory.
According to some embodiment of the present invention, in the above-mentioned method of work, described step B can comprise:
When the service attribute of described flow was the multifile transport service, described step B2 comprised:
Described access point proxy module obtains to be mutually related a plurality of files from described flow;
Described access point proxy module is compressed into a compressed file with described a plurality of files, and compressed file is sent to described work station proxy module by described second communication session.
Some embodiments of the present invention provide a kind of WAP (wireless access point), comprising:
Radio interface module is used for communicating by letter with wireless stations, is provided with work station proxy module and client application module in the described wireless stations;
The access point proxy module, be used for the described client application module of representative, first communication session between foundation and maintenance and the far-end server, wherein, described work station proxy module represents described far-end server, and sets up between the described client application module and safeguard third communication session is arranged;
Described access point proxy module, also be used for by the flow of described first communication session reception from far-end server, transmission mode to described flow is changed, and according to the transmission mode after the conversion, by and described work station proxy module between the second communication session of setting up, send described flow to described work station proxy module;
Wherein, the transmission mode after the described conversion makes the efficiency of transmission of described flow in described second communication session be improved, and is shortened the session duration of described second communication session.
According to some embodiment of the present invention, above-mentioned WAP (wireless access point) can also comprise:
The dormancy control module is used for controlling described radio interface module dormancy at described traffic transport tempus intercalare and/or after described flow transmission finishes.
According to some embodiment of the present invention, in the above-mentioned WAP (wireless access point), described access point proxy module comprises:
The request receiving element, the communication request that is used for the described client application module of the described work station proxy module forwarding of reception, described communication request is that described client application module is initiated to far-end server, and described communication request makes described work station proxy module represent described far-end server, and sets up between the described client application module and safeguard third communication session is arranged;
The session maintenance unit is used for the described client application module of representative, first communication session between foundation and maintenance and the far-end server.
According to some embodiment of the present invention, in the above-mentioned WAP (wireless access point), described access point proxy module comprises:
Buffer unit is used for by described first communication session, and reception and buffer memory are from the flow of far-end server;
Transmitting element is used for the service attribute according to described flow, the transmission mode of described flow is changed, and according to the transmission mode after the conversion, sent described flow by described second communication session to described work station proxy module.
According to some embodiment of the present invention, in the above-mentioned WAP (wireless access point), described transmitting element, be further used for when the service attribute of described flow is the monofile non-real time service, when the described flow of buffer memory reaches default size or cache-time and reaches default thresholding, with the flow of burst transmission mode by described second communication session transmission buffer memory.
According to some embodiment of the present invention, in the above-mentioned WAP (wireless access point), described transmitting element, be further used for when the service attribute of described flow is the multifile transport service, obtain to be mutually related a plurality of files from described flow, described a plurality of files are compressed into a compressed file, compressed file is sent to described work station proxy module by described second communication session.
Some embodiments of the present invention also provide a kind of method of work of wireless stations, are provided with work station proxy module and client application module in the described wireless stations, and described method comprises:
Described work station proxy module receives described client application module to the far-end server communication requests;
Described work station proxy module represents described far-end server, the third communication session between foundation and maintenance and the described client application module;
Described work station proxy module is transmitted the communication request of described client application module to WAP (wireless access point), so that described WAP (wireless access point) represents described client application module, and first communication session between foundation and maintenance and the described far-end server;
Described work station proxy module receives the flow from far-end server that described WAP (wireless access point) is transmitted, described forwarding of flow is that described WAP (wireless access point) is changed the transmission mode of described flow, and according to the transmission mode after the conversion, by and described work station proxy module between the second communication session of setting up send; Wherein, the transmission mode after the described conversion makes the efficiency of transmission of described flow in described second communication session be improved, and is shortened the session duration of described second communication session;
Described work station proxy module sends to described client application module by described third communication session with described flow.
According to some embodiment of the present invention, in the said method, described work station proxy module receives the flow from far-end server that described WAP (wireless access point) is transmitted, and can comprise:
Described work station proxy module receives the described flow that described WAP (wireless access point) sends with burst mode, and it is that described flow at access point proxy module buffer memory reaches default size or cache-time and reaches default thresholding and trigger that wherein said burst mode sends.
According to some embodiment of the present invention, in the said method, described work station proxy module receives the flow from far-end server that described WAP (wireless access point) is transmitted, and can comprise:
Described work station proxy module receives the described flow that described WAP (wireless access point) sends, and comprises the file that described WAP (wireless access point) obtains a plurality of file compressions that are mutually related in the wherein said flow.
Some embodiments of the present invention also provide a kind of wireless stations, comprising:
Client application module is used for and far-end server is set up and the maintain communications session, and provides local service for the user;
Described work station proxy module is used for:
Receive described client application module to the far-end server communication requests, and represent described far-end server, the third communication session between foundation and maintenance and the described client application module;
Transmit the communication request of described client application module to WAP (wireless access point), so that described WAP (wireless access point) represents described client application module, first communication session between foundation and maintenance and the described far-end server;
Receive the flow from far-end server that described WAP (wireless access point) is transmitted, described forwarding of flow is that described WAP (wireless access point) is changed the transmission mode of described flow, and according to the transmission mode after the conversion, by and described work station proxy module between the second communication session of setting up send; Wherein, the transmission mode after the described conversion makes the efficiency of transmission of described flow in described second communication session be improved, and is shortened the session duration of described second communication session; And,
By described third communication session, described flow is sent to described client application module.
According to some embodiment of the present invention, in the above-mentioned wireless stations:
Described work station proxy module, be further used for receiving the described flow that described WAP (wireless access point) sends with burst mode, it is that described flow at access point proxy module buffer memory reaches default size or cache-time and reaches default thresholding and trigger that wherein said burst mode sends.
According to some embodiment of the present invention, in the above-mentioned wireless stations:
Described work station proxy module is further used for described work station proxy module and receives the described flow that described WAP (wireless access point) sends, and comprises the file that described WAP (wireless access point) obtains a plurality of file compressions that are mutually related in the wherein said flow.
From the above as can be seen, WAP (wireless access point) provided by the invention, wireless stations and method of work separately have following beneficial effect:
One, by in WAP (wireless access point) and wireless stations, introducing proxy module; realized that power-save operation is to the transparence of far-end server and client application module in the WAP (wireless access point); thereby under the situation of the communication session keep-alive of setting up by WAP (wireless access point) and wireless stations; guaranteed the periodicity dormancy of radio interface module in the WAP (wireless access point); and then prolonged the time of WAP (wireless access point) dormancy greatly; strengthen the energy-conservation efficient of WAP (wireless access point), reduced the influence to former communication service simultaneously.
Two, by in WAP (wireless access point) and wireless stations, introducing proxy module, guaranteed the independence of communicating by letter between WAP (wireless access point) and the wireless stations, the access point proxy module can be according to the different demands of upper-layer service with the work station proxy module, realize the conversion (traffic pattern shaping) of data-transmission mode between WAP (wireless access point) and the wireless stations, and then introduce the efficient that mode that packet converges burst or multifile compression improves transfer of data, thereby shorten the WAP (wireless access point) operating time, improve the energy-saving efficiency of WAP (wireless access point).
Description of drawings
Fig. 1 is responsible for the scene schematic diagram of the network insertion of wireless stations for WAP (wireless access point) in the prior art.
Fig. 2 is the application scenarios schematic diagram of the embodiment of the invention;
The schematic flow sheet of the method for work of the WAP (wireless access point) that Fig. 3 provides for the embodiment of the invention;
The structural representation of the WAP (wireless access point) that Fig. 4 provides for the embodiment of the invention;
The schematic flow sheet of the method for work of the wireless stations that Fig. 5 provides for the embodiment of the invention;
The structural representation of the wireless stations that Fig. 6 provides for the embodiment of the invention;
Fig. 7 is a concrete application example schematic diagram of the embodiment of the invention.
Embodiment
The inventor furthers investigate at the energy-saving scheme of WAP (wireless access point) commonly used in the prior art, finds that at present common WAP (wireless access point) energy-saving scheme and shortcoming thereof are as follows:
1. complete rest sleep mode: when all wireless stations that link to each other with WAP (wireless access point) were in off position, this WAP (wireless access point) entered park mode automatically, and the power supply supply of its all or part of module is cut off.In this scheme, after WAP (wireless access point) enters resting state, can't respond any request from wireless stations, have only by the external world and get involved (for example user button) ability wake on wireless access point.The advantage of this scheme be simple, be easy to realize that shortcoming is wake on wireless access point automatically, therefore influence greatly communicate by letter between WAP (wireless access point) and wireless stations, can only be used for the long-time idle scene of wireless stations usually.
2. semi-dormant mode (dormancy/work switch mode): when all wireless stations that link to each other with WAP (wireless access point) are in off position, this WAP (wireless access point) enters dormancy/work switch mode, be to be divided into dormancy and operating time section alternately the wireless access time of naming a person for a particular job, wherein in the dormancy time section, the WAP (wireless access point) supply of partly cutting off the electricity supply, stop and the communicating by letter of the external world, and in the operating time section, WAP (wireless access point) changes operating state (can receive and send signal normally) into from resting state automatically, if in the operating time section, do not find association and communication request from wireless stations, then after the operating time section finishes, WAP (wireless access point) enters resting state again, so constantly alternately; If receive association and communication request from wireless stations in the operating time section, wireless access is named a person for a particular job and is withdrawed from dormancy/work switch mode, enters normal mode of operation.The advantage of this scheme is that WAP (wireless access point) can switch automatically between dormancy and operating state, thereby has reduced the influence of sleep operation to wireless stations.Its shortcoming is: dormancy time is short, and frequent switching of dormancy/work reduced energy-saving efficiency.
The inventor finds that the power-saving mechanism of the WAP (wireless access point) of prior art has following limitation:
1) enforcement of energy-conservation behave all is to occur over just when not having communication activity between WAP (wireless access point) and the wireless stations, and namely the communication session the service routine of the client application from wireless stations in the far-end server finishes.Thereby existing mechanism will almost can't enter resting state in the application program running on wireless stations, thereby exists dormancy time to lack the problem of energy-saving effect difference.
2) existing mechanism only depends on the communications status between WAP (wireless access point) and the wireless stations, and does not take all factors into consideration the upper-layer service demand, thereby its energy-saving efficiency is lower.
The invention provides a kind of method of work of WAP (wireless access point)/work station, make WAP (wireless access point) can obtain more dormancy time, and then can improve the energy-saving efficiency of access point, drop to minimum to the influence of the communication between WAP (wireless access point) and the wireless stations dormancy simultaneously.For making the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the accompanying drawings and the specific embodiments.
Please refer to the application scenarios of the embodiment of the invention shown in Figure 2.The embodiment of the invention embeds two proxy modules respectively in WAP (wireless access point) and wireless stations, wherein the proxy module in WAP (wireless access point) is called the access point proxy module, and the proxy module in wireless stations is called the work station proxy module.The concrete scheme of the embodiment of the invention is as follows:
Step 1) access point agency and work station agency are divided into 3 independently communication sessions with the former communication session between original client application module and far-end server application module: first, second, and third communication session.The access point proxy module represents client application module and safeguards and the communicating by letter of far-end server application module by first communication session; The work station proxy module represents far-end server application module communicating by letter by third communication session maintenance and agent client application module; Second communication session between access point proxy module and the work station proxy module is independent of former communication session, can communicate by any energy-conservation mode of WAP (wireless access point) that helps; The first, third communication session then can be adopted the communication protocol identical with former communication session, as communication protocol 1.Above-mentioned processing is transparent for the application module in work station and the server, be that client application module does not know that any change has taken place communication session in the work station, still think and far-end server in server application modules between successfully set up and kept communication session.
Here, the agreement that can adopt according to session is set up above-mentioned communication session.Same; the concrete agreement that can adopt according to session safeguards first, the keep-alive of third communication session, for example; can periodically send keep-alive message/heartbeat packet by an end, whether other end basis receives keep-alive message/heartbeat packet on time determines whether keeping session.
By with upper type; originally be based upon client application module and be replaced by 3 communication sessions to a communication session between the server application modules; and safeguard first communication session, safeguard third communication session by the work station proxy module by the access point proxy module; make server application modules and client application module all think and the other side between session be in keepalive state, can avoid application module to stop discharging corresponding resource because of session like this and then cause between the two the inaccessible problem of communication.
Step 2) under the prerequisite of above-mentioned steps 1, access point proxy module and work station proxy module are finished the conversion (traffic pattern shaping) of data-transmission mode between WAP (wireless access point) and the wireless stations by the second communication session, this pattern conversion can be carried out conversion plan according to the different demand self adaptations of upper-layer service and select: the access point proxy module is by described first communication session, and reception and buffer memory are from the flow of server application modules; According to the service attribute of described flow, the transmission mode of described flow is changed, and according to the transmission mode after the conversion, sent described flow by described second communication session to described work station proxy module.Like this, the transmission mode after the conversion makes the efficiency of transmission of described flow in described second communication session be improved, and is shortened the session duration of described second communication session.
Owing to improved traffic transport efficient, therefore the embodiment of the invention can reduce the duration of keeping of described second communication session, thereby WAP (wireless access point) can be at the traffic transport tempus intercalare and/or after described flow transmission finishes, control its radio interface module dormancy with the saving power consumption, thereby can reduce equipment power dissipation.
Below data-transmission mode changed optional scheme be illustrated, the present invention be not limited to following for example:
A) packet polymerization and burst (packet accumulation ﹠amp; Burst): the data of coming from far-end server directly do not send to earlier corresponding wireless stations, but in WAP (wireless access point), carry out buffer memory (converging), when buffer data size or cache-time reached certain numerical value, all data in buffer all sent to wireless client from WAP (wireless access point) with the pattern of burst.This scheme is applicable to the transmission of monofile non real-time, for example ftp business etc.Here cache-time refers to that all arrive the cache-time of the data of WAP (wireless access point) in data cached at first.
B) multifile compression (multi-file compression): a plurality of associated documents that receive from far-end server are compressed into a file, then compressed file are sent to wireless stations from WAP (wireless access point).This scheme is applicable to the multifile transport service, for example web browsing business etc.
From the above as can be seen; a kind of WAP (wireless access point) energy-saving scheme based on proxy module that the embodiment of the invention provides; under the situation of communication session keep-alive that can be the application service module of the client application from wireless stations in the far-end server; WAP (wireless access point) is carried out sleep operation; prolong the WAP (wireless access point) dormancy time, improved energy-saving effect.The embodiment of the invention is considered the different demands of upper-layer service simultaneously, under the situation that guarantees user's experience, the communications pattern between WAP (wireless access point) and the wireless stations is adjusted, a kind of park mode flexibly based on the different business demand is provided, thereby reduce dormancy/work switching frequency, improve energy-saving efficiency.
Again respectively from WAP (wireless access point) and wireless stations side, embodiments of the invention are further described below.
Please refer to Fig. 3, the embodiment of the invention provides a kind of method of work of WAP (wireless access point), be provided with access point proxy module and radio interface module in the described WAP (wireless access point), described WAP (wireless access point) can be communicated by letter with wireless stations by radio interface module, is provided with work station proxy module and client application module in the described wireless stations.Please refer to Fig. 3, this method comprises:
Wherein, the transmission mode after the described conversion makes the efficiency of transmission of described flow in described second communication session be improved, and is shortened the session duration of described second communication session.
By above step, WAP (wireless access point) can shorten the session duration of described second communication session, thereby described WAP (wireless access point) can be controlled described radio interface module dormancy, to reduce equipment power dissipation at described traffic transport tempus intercalare and/or after described flow transmission finishes.
Here, above-mentioned steps 31 specifically can comprise:
Step 311, the access point proxy module receives the communication request of the described client application module of described work station proxy module forwarding, described communication request is that described client application module is initiated to far-end server, and described communication request makes described work station proxy module represent described far-end server, and sets up between the described client application module and safeguard third communication session is arranged;
Step 312, described access point proxy module represents described client application module, first communication session between foundation and maintenance and the far-end server.
Here, described access point proxy module will be with the identity of client application module, first communication session between foundation and maintenance and the far-end server, thereby the agency who realizes client application module.The identity of client application module specifically can characterize as IP address, port numbers with the mailing address of client application module.
Above-mentioned steps 32 specifically can comprise:
Step 321, described access point proxy module are by described first communication session, and reception and buffer memory are from the flow of far-end server;
Step 322, described access point proxy module is changed the transmission mode of described flow according to the service attribute of described flow, and according to the transmission mode after the conversion, sends described flow by described second communication session to described work station proxy module.
For example, when the service attribute of described flow is the monofile non-real time service, in the described step 322, described access point proxy module can reach default size at the described flow of buffer memory or cache-time reaches when presetting thresholding, sends the flow of buffer memory by described second communication session with burst transmission mode.
Again for example, when the service attribute of described flow is the multifile transport service, in the described step 322, described access point proxy module can obtain to be mutually related a plurality of files from described flow, then, described a plurality of files are compressed into a compressed file, compressed file is sent to described work station proxy module by described second communication session.
Based on said method, the embodiment of the invention also provides a kind of WAP (wireless access point), and as shown in Figure 4, this WAP (wireless access point) comprises:
Radio interface module is used for communicating by letter with wireless stations, is provided with work station proxy module and client application module in the described wireless stations;
The access point proxy module, be used for the described client application module of representative, first communication session between foundation and maintenance and the far-end server, wherein, described work station proxy module represents described far-end server, and sets up between the described client application module and safeguard third communication session is arranged;
Described access point proxy module, also be used for by the flow of described first communication session reception from far-end server, transmission mode to described flow is changed, and according to the transmission mode after the conversion, by and described work station proxy module between the second communication session of setting up, send described flow to described work station proxy module;
Wherein, the transmission mode after the described conversion makes the efficiency of transmission of described flow in described second communication session be improved, and is shortened the session duration of described second communication session.
Preferably, described WAP (wireless access point) can also comprise:
The dormancy control module is used for controlling described radio interface module dormancy at described traffic transport tempus intercalare and/or after described flow transmission finishes.
Preferably, described access point proxy module can comprise:
The request receiving element, the communication request that is used for the described client application module of the described work station proxy module forwarding of reception, described communication request is that described client application module is initiated to far-end server, and described communication request makes described work station proxy module represent described far-end server, and sets up between the described client application module and safeguard third communication session is arranged;
The session maintenance unit is used for the described client application module of representative, first communication session between foundation and maintenance and the far-end server.
Preferably, described access point proxy module can also comprise:
Buffer unit is used for by described first communication session, and reception and buffer memory are from the flow of far-end server;
Transmitting element is used for the service attribute according to described flow, the transmission mode of described flow is changed, and according to the transmission mode after the conversion, sent described flow by described second communication session to described work station proxy module.
As a kind of preferred implementation, described transmitting element, be further used for when the service attribute of described flow is the monofile non-real time service, when the described flow of buffer memory reaches default size or cache-time and reaches default thresholding, with the flow of burst transmission mode by described second communication session transmission buffer memory.
As another kind of preferred implementation, described transmitting element, be further used for when the service attribute of described flow is the multifile transport service, obtain to be mutually related a plurality of files from described flow, described a plurality of files are compressed into a compressed file, compressed file is sent to described work station proxy module by described second communication session.
Please refer to Fig. 5 again, the embodiment of the invention provides a kind of method of work of wireless stations, is provided with work station proxy module and client application module in the described wireless stations.As shown in Figure 5, described method comprises:
Step 51, described work station proxy module receives described client application module to the far-end server communication requests;
Step 52, described work station proxy module represents described far-end server, the third communication session between foundation and maintenance and the described client application module;
Here, described work station proxy module will be with the identity of far-end server, the third communication session between foundation and maintenance and the described client application module, thereby the agency who realizes far-end server.The identity of far-end server specifically can characterize as IP address, port numbers with the mailing address of server application modules.
Step 53, described work station proxy module is transmitted the communication request of described client application module to WAP (wireless access point), so that described WAP (wireless access point) represents described client application module, first communication session between foundation and maintenance and the described far-end server;
Step 54, described work station proxy module receives the flow from far-end server that described WAP (wireless access point) is transmitted, described forwarding of flow is that described WAP (wireless access point) is changed the transmission mode of described flow, and according to the transmission mode after the conversion, by and described work station proxy module between the second communication session of setting up send; Wherein, the transmission mode after the described conversion makes the efficiency of transmission of described flow in described second communication session be improved, and is shortened the session duration of described second communication session;
Step 55, described work station proxy module sends to described client application module by described third communication session with described flow.
Based on the method for work of above-described wireless stations, the embodiment of the invention also provides a kind of wireless stations, and as shown in Figure 6, this work station comprises client application module and work station proxy module, wherein:
Described client application module is used for and far-end server is set up and the maintain communications session, and provides local service for the user;
Described work station proxy module is used for:
Receive the described communication request that described client application module is initiated to far-end server, and represent described far-end server, the third communication session between foundation and maintenance and the described client application module;
Transmit the communication request of described client application module to WAP (wireless access point), so that described WAP (wireless access point) represents described client application module, first communication session between foundation and maintenance and the described far-end server;
Receive the flow from far-end server that described WAP (wireless access point) is transmitted, described forwarding of flow is that described WAP (wireless access point) is changed the transmission mode of described flow, and according to the transmission mode after the conversion, by and described work station proxy module between the second communication session of setting up send; Wherein, the transmission mode after the described conversion makes the efficiency of transmission of described flow in described second communication session be improved, and is shortened the session duration of described second communication session; And,
By described third communication session, described flow is sent to described client application module.
Here, client application module can be according to the mode of prior art, sets up and the maintain communications session with far-end server, and provides service for the local user.And in fact, this communication session has been divided into above-mentioned first, second, third communication session, but the agent functionality of the embodiment of the invention by the work station proxy module, make client application module still think and far-end server between set up and safeguarded communication session.
Preferably, described work station proxy module, can be further used for receiving the described flow that described WAP (wireless access point) sends with burst mode, it is that described flow at access point proxy module buffer memory reaches default size or cache-time and reaches default thresholding and trigger that wherein said burst mode sends.
Preferably, described work station proxy module, can be further used for described work station proxy module and receive the described flow that described WAP (wireless access point) sends, comprise the file that described WAP (wireless access point) obtains a plurality of file compressions that are mutually related in the wherein said flow.
At last, in conjunction with Fig. 7, be mobile router with the WAP (wireless access point), wireless stations be the WiFi work station as an example, further specify the concrete enforcement of the embodiment of the invention.
In this example, mobile router one end provides WiFi interface, and with WiFi work station (smart mobile phone or the computer that for example possess the WiFi network interface) wireless connections, the other end links to each other with internet (Internet) by the WAN mouth.
Embedded the access point proxy module in the mobile router, as shown in Figure 7, specifically can comprise as lower module/unit:
Access point agency (AP Proxy): mainly be responsible for following work: represent wireless stations and communicate by letter with far-end server; Safeguard the communication session with service routine; With wireless stations interactive information and data;
Network address translation (nat): be responsible for the conversion of the network address;
Timer (Timer): the timing function that dormancy is provided;
Scheduler (Scheduler): finish sequential scheduling;
Controller (Controller): the energy supply of switching the WiFi module;
Wake module (Wakeup): provide access point to force arousal function.
Embedded the work station proxy module in the WiFi work station, as shown in Figure 7, specifically can comprise as lower module/unit:
Work station agency (STA Proxy): mainly be responsible for following work: represent far-end server and communicate by letter with client-side program; Safeguard the communication session with client-side program; With WAP (wireless access point) interactive information and data;
Network address translation (nat): be responsible for the conversion of the network address;
Microsoft Loopback Adapter (Virtual NIC): the communication port of assisting to set up work station proxy module and client-side program;
Timer (Timer): the timing function that dormancy is provided;
Scheduler (Scheduler): finish sequential scheduling;
Controller (Controller): the energy supply of switching the WiFi module.
Be example with application scenarios shown in Figure 7, illustrate that to finish the step that the FTP data download under this scene as follows:
1) client application module (Client App) is initiated the control connection request to far-end server application module (Server app), and foundation agency's (STA Proxy) from client application module (Client App) to work station control connection, because work station agency (STA Proxy) provides the agency service of remote server (Server), so still thinking to have set up with far-end server program (Server App), client application module (Client App) is connected.
2) information of the control connection that will set up with client application module (Client App) of work station agency (STA Proxy) is sent to access point agency (AP Proxy) by channel (channel), and represent client application module (Client App) to far-end server application (Server app) initiation control connection request and set up control connection by access point agency (AP Proxy).
3) in like manner, according to above-mentioned steps 1), 2) mode, finish the data establishment of connection.
4) begin to download file from the far-end ftp server, at first file is used (Server app) from far-end server and is downloaded to access point agency (AP Proxy), and the WiFi interface of WAP (wireless access point) is closed (being in park mode) in this section process.
5) after the file download finishes, the WiFi interface is opened (entering mode of operation), the data of downloading send work station agency (STA Proxy) from access point proxy module (AP Proxy) to burst mode, for improving efficiency of transmission, can adopt advanced Radio Transmission Technology, for example the polymerization technique of 802.11n.
6) the WiFi interface of WAP (wireless access point) was closed (entering park mode) after transfer of data finished.
7) data send client application module (Client App) from work station agency (STA proxy) to according to File Transfer Protocol, finish whole ftp file downloading process
From above flow process as can be seen, whole ftp file downloading process all is transparent for far-end server and client application module, i.e. its respective thread and talk with keep-alive all the time in far-end server and the client application module; And the wireless module in the WAP (wireless access point) can be in resting state for a long time, thereby has realized the lifting of the energy-saving efficiency under the situation that does not influence former communication.
From above scheme describe and the embodiment introduction as can be seen this invention following good effect is arranged:
One, by in WAP (wireless access point) and wireless stations, introducing proxy module; realized that power-save operation is to the transparence of far-end server and client application module in the WAP (wireless access point); thereby under the situation of the communication session keep-alive of setting up by WAP (wireless access point) and wireless stations; guaranteed the periodicity dormancy of wireless module in the WAP (wireless access point); and then prolonged the time of WAP (wireless access point) dormancy greatly; strengthen the energy-conservation efficient of WAP (wireless access point), reduced the influence to former communication service simultaneously.
Two, by in WAP (wireless access point) and wireless stations, introducing proxy module, guaranteed the independence of communicating by letter between WAP (wireless access point) and the wireless stations, the access point proxy module can be according to the different demands of upper-layer service with the work station proxy module, realize the conversion (traffic pattern shaping) of data-transmission mode between WAP (wireless access point) and the wireless stations, and then introduce the efficient that mode that packet converges burst or multifile compression improves transfer of data, thereby shorten the WAP (wireless access point) operating time, improve the energy-saving efficiency of WAP (wireless access point).
Many functional parts described in this specification all are called as module, in order to emphasize the independence of its implementation more especially.
In the embodiment of the invention, module can realize with software, in order to carried out by various types of processors.For instance, the executable code module of a sign can comprise one or more physics or the logical block of computer instruction, and for instance, it can be built as object, process or function.However, the executable code of institute's identification module need not to be physically located in together, but can comprise the different instruction that is stored in diverse location, when combining on these command logics, and its composition module and realize the regulation purpose of this module.
In fact, executable code module can be individual instructions or many instructions, and even can be distributed on a plurality of different code segments, be distributed in the middle of the distinct program, and cross over a plurality of memory devices and distribute.Similarly, operating data can be identified in module, and can realize and be organized in the data structure of any suitable type according to any suitable form.Described operating data can be used as the individual data collection and is collected, and perhaps can be distributed on the diverse location (to be included on the different storage device), and can only be present on system or the network as electronic signal at least in part.
When module can utilize software to realize, consider the level of existing hardware technology, so can be with the module of software realization, do not considering under the condition of cost, those skilled in the art can build the corresponding hardware circuit and realize corresponding function, and described hardware circuit comprises conventional ultra-large integrated (VLSI) circuit or gate array and the existing semiconductor such as logic chip, transistor or other discrete element.Module can also be used programmable hardware device, such as realizations such as field programmable gate array, programmable logic array, programmable logic devices.
The above only is embodiments of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (18)
1. the method for work of a WAP (wireless access point), it is characterized in that, be provided with access point proxy module and radio interface module in the described WAP (wireless access point), described WAP (wireless access point) can be communicated by letter with wireless stations by radio interface module, be provided with work station proxy module and client application module in the described wireless stations, described method comprises:
Steps A, described access point proxy module, represent described client application module, first communication session between foundation and maintenance and the far-end server, wherein, described work station proxy module represents described far-end server, and sets up between the described client application module and safeguard third communication session is arranged;
Step B, described access point proxy module is by the flow of described first communication session reception from far-end server, transmission mode to described flow is changed, and according to the transmission mode after the conversion, by and described work station proxy module between the second communication session of setting up, send described flow to described work station proxy module;
Wherein, the transmission mode after the described conversion makes the efficiency of transmission of described flow in described second communication session be improved, and is shortened the session duration of described second communication session.
2. the method for claim 1 is characterized in that, also comprises:
At described traffic transport tempus intercalare and/or after described flow transmission finishes, control described radio interface module dormancy.
3. method as claimed in claim 2 is characterized in that, described steps A comprises:
The access point proxy module receives the communication request of the described client application module of described work station proxy module forwarding, described communication request is that described client application module is initiated to far-end server, and described communication request makes described work station proxy module represent described far-end server, and sets up between the described client application module and safeguard third communication session is arranged;
Described access point proxy module represents described client application module, first communication session between foundation and maintenance and the far-end server.
4. method as claimed in claim 2 is characterized in that, described step B comprises:
Step B1, described access point proxy module are by described first communication session, and reception and buffer memory are from the flow of far-end server;
Step B2, described access point proxy module is changed the transmission mode of described flow according to the service attribute of described flow, and according to the transmission mode after the conversion, sends described flow by described second communication session to described work station proxy module.
5. method as claimed in claim 4 is characterized in that,
When the service attribute of described flow was the monofile non-real time service, described step B2 comprised:
Described access point proxy module is when the described flow of buffer memory reaches default size or cache-time and reaches default thresholding, with the flow of burst transmission mode by described second communication session transmission buffer memory.
6. method as claimed in claim 4 is characterized in that, described step B comprises:
When the service attribute of described flow was the multifile transport service, described step B2 comprised:
Described access point proxy module obtains to be mutually related a plurality of files from described flow;
Described access point proxy module is compressed into a compressed file with described a plurality of files, and compressed file is sent to described work station proxy module by described second communication session.
7. a WAP (wireless access point) is characterized in that, comprising:
Radio interface module is used for communicating by letter with wireless stations, is provided with work station proxy module and client application module in the described wireless stations;
The access point proxy module, be used for the described client application module of representative, first communication session between foundation and maintenance and the far-end server, wherein, described work station proxy module represents described far-end server, and sets up between the described client application module and safeguard third communication session is arranged;
Described access point proxy module, also be used for by the flow of described first communication session reception from far-end server, transmission mode to described flow is changed, and according to the transmission mode after the conversion, by and described work station proxy module between the second communication session of setting up, send described flow to described work station proxy module;
Wherein, the transmission mode after the described conversion makes the efficiency of transmission of described flow in described second communication session be improved, and is shortened the session duration of described second communication session.
8. WAP (wireless access point) as claimed in claim 7 is characterized in that, also comprises:
The dormancy control module is used for controlling described radio interface module dormancy at described traffic transport tempus intercalare and/or after described flow transmission finishes.
9. WAP (wireless access point) as claimed in claim 8 is characterized in that,
Described access point proxy module comprises:
The request receiving element, the communication request that is used for the described client application module of the described work station proxy module forwarding of reception, described communication request is that described client application module is initiated to far-end server, and described communication request makes described work station proxy module represent described far-end server, and sets up between the described client application module and safeguard third communication session is arranged;
The session maintenance unit is used for the described client application module of representative, first communication session between foundation and maintenance and the far-end server.
10. WAP (wireless access point) as claimed in claim 8 is characterized in that,
Described access point proxy module comprises:
Buffer unit is used for by described first communication session, and reception and buffer memory are from the flow of far-end server;
Transmitting element is used for the service attribute according to described flow, the transmission mode of described flow is changed, and according to the transmission mode after the conversion, sent described flow by described second communication session to described work station proxy module.
11. WAP (wireless access point) as claimed in claim 10 is characterized in that,
Described transmitting element, be further used for when the service attribute of described flow is the monofile non-real time service, when the described flow of buffer memory reaches default size or cache-time and reaches default thresholding, with the flow of burst transmission mode by described second communication session transmission buffer memory.
12. WAP (wireless access point) as claimed in claim 10 is characterized in that,
Described transmitting element, be further used for when the service attribute of described flow is the multifile transport service, obtain to be mutually related a plurality of files from described flow, described a plurality of files are compressed into a compressed file, compressed file is sent to described work station proxy module by described second communication session.
13. the method for work of a wireless stations is characterized in that, is provided with work station proxy module and client application module in the described wireless stations, described method comprises:
Described work station proxy module receives described client application module to the far-end server communication requests;
Described work station proxy module represents described far-end server, the third communication session between foundation and maintenance and the described client application module;
Described work station proxy module is transmitted the communication request of described client application module to WAP (wireless access point), so that described WAP (wireless access point) represents described client application module, and first communication session between foundation and maintenance and the described far-end server;
Described work station proxy module receives the flow from far-end server that described WAP (wireless access point) is transmitted, described forwarding of flow is that described WAP (wireless access point) is changed the transmission mode of described flow, and according to the transmission mode after the conversion, by and described work station proxy module between the second communication session of setting up send; Wherein, the transmission mode after the described conversion makes the efficiency of transmission of described flow in described second communication session be improved, and is shortened the session duration of described second communication session;
Described work station proxy module sends to described client application module by described third communication session with described flow.
14. method as claimed in claim 13 is characterized in that, described work station proxy module receives the flow from far-end server that described WAP (wireless access point) is transmitted, and comprising:
Described work station proxy module receives the described flow that described WAP (wireless access point) sends with burst mode, and it is that described flow at access point proxy module buffer memory reaches default size or cache-time and reaches default thresholding and trigger that wherein said burst mode sends.
15. method as claimed in claim 13 is characterized in that, described work station proxy module receives the flow from far-end server that described WAP (wireless access point) is transmitted, and comprising:
Described work station proxy module receives the described flow that described WAP (wireless access point) sends, and comprises the file that described WAP (wireless access point) obtains a plurality of file compressions that are mutually related in the wherein said flow.
16. a wireless stations is characterized in that, comprising:
Client application module is used for and far-end server is set up and the maintain communications session, and provides local service for the user;
Described work station proxy module is used for:
Receive described client application module to the far-end server communication requests, and represent described far-end server, the third communication session between foundation and maintenance and the described client application module;
Transmit the communication request of described client application module to WAP (wireless access point), so that described WAP (wireless access point) represents described client application module, first communication session between foundation and maintenance and the described far-end server;
Receive the flow from far-end server that described WAP (wireless access point) is transmitted, described forwarding of flow is that described WAP (wireless access point) is changed the transmission mode of described flow, and according to the transmission mode after the conversion, by and described work station proxy module between the second communication session of setting up send; Wherein, the transmission mode after the described conversion makes the efficiency of transmission of described flow in described second communication session be improved, and is shortened the session duration of described second communication session; And,
By described third communication session, described flow is sent to described client application module.
17. wireless stations as claimed in claim 16 is characterized in that,
Described work station proxy module, be further used for receiving the described flow that described WAP (wireless access point) sends with burst mode, it is that described flow at access point proxy module buffer memory reaches default size or cache-time and reaches default thresholding and trigger that wherein said burst mode sends.
18. wireless stations as claimed in claim 16 is characterized in that,
Described work station proxy module is further used for described work station proxy module and receives the described flow that described WAP (wireless access point) sends, and comprises the file that described WAP (wireless access point) obtains a plurality of file compressions that are mutually related in the wherein said flow.
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| JP2013045375A JP2013186904A (en) | 2012-03-08 | 2013-03-07 | Wireless access point, wireless station and operation method thereof |
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