CN103313303A - Wireless access point, wireless work station and work method of wireless access point and wireless work station - Google Patents

Abstract

The invention provides a wireless access point, a wireless workstation and a working method thereof. In the method, by adopting a proxy mechanism, the wireless access point can be dormant when the communication session between the client application module in the wireless workstation and the application service module in the remote server is kept alive, thereby It can greatly increase the sleep time and improve the energy saving effect. Moreover, the present invention also takes into account the different requirements of upper-layer services, adjusts the communication transmission mode between the wireless access point and the wireless workstation while ensuring user experience, and provides a flexible sleep mode based on different service requirements, thereby reducing sleep time. / work switching frequency, improve energy saving efficiency.

Description

Wireless access point, wireless workstation and method of operation thereof

technical field

The invention relates to the field of wireless communication, in particular to a wireless access point, a wireless workstation and their respective working methods.

Background technique

A wireless access point (AP, Access Point) is responsible for the network access of multiple wireless workstations (STA, Station). A typical application is shown in Figure 1: the wireless access point in the scenario in the figure can also be called a mobile router (Mobile Router), one end of which provides WiFi access services to wireless workstations, and the other end accesses the remote server (Server) through the third generation mobile communication technology (The Third Generation, 3G) wireless network; in the scene shown in the figure Specifically, the wireless workstation may be a WiFi workstation (WiFiStation), which is connected to a wireless access point through a WiFi interface. In the figure, the client application module (Client App) located in the wireless workstation realizes the establishment of a communication session (communication session) with the server application module in the remote server through the wireless workstation and the wireless access point. Protocol 1 is established.

It should be pointed out here that the wireless access technology between the wireless access point and the wireless workstation in the present invention is not limited to the wireless technology based on IEEE 802.11 (WiFi) shown in FIG. UMB), IEEE 802.16 (WiMAX), IEEE 802.20 and other wireless technologies. Moreover, the connection technology between the wireless access point and the remote server in the present invention is not limited to the 3G wireless network access method, and can also be any other wireless access method, such as 3GPP Long Term Evolution (LTE)/Enhanced LTE (LTE -A), etc. Of course, various existing wired methods can also be used for access.

A wireless access point may need to communicate with multiple wireless workstations, so the energy consumption of a wireless access point will be much greater than that of a wireless workstation. In recent years, with the rise of the concept of green environmental protection and the generation of portable access points, the research and discussion on energy saving of wireless access points has become more and more extensive. How to design the working mode of the wireless access point/workstation so that it can better support the dormancy of the wireless access point to reduce the energy consumption of the access point has become a hot issue.

Contents of the invention

In view of this, one of the purposes of some embodiments of the present invention is to provide a wireless access point, a wireless workstation and their respective working methods, which can provide support for the dormancy of the wireless access point, so that the wireless access point can reduce the power consumption.

In order to solve the above technical problems, some embodiments of the present invention provide solutions as follows:

A working method of a wireless access point, wherein the wireless access point is provided with an access point agent module and a wireless interface module, and the wireless access point can communicate with a wireless workstation through the wireless interface module, and in the wireless workstation A workstation agent module and a client application module are provided, and the method includes:

Step A, the access point agent module, on behalf of the client application module, establishes and maintains a first communication session with the remote server, wherein the workstation agent module, on behalf of the remote server, communicates with the A third communication session is established and maintained between the client application modules;

Step B, the access point proxy module receives traffic from the remote server through the first communication session, converts the transmission mode of the traffic, and communicates with the workstation proxy module according to the converted transmission mode The second communication session established between, sends the traffic to the workstation proxy module;

Wherein, the converted transmission mode improves the transmission efficiency of the traffic on the second communication session, and shortens the session duration of the second communication session.

According to some embodiments of the present invention, the above working method may also include:

During the intermittent period of the traffic transmission and/or after the traffic is sent, the wireless interface module is controlled to sleep.

According to some embodiments of the present invention, in the above working method, the step A may include:

The access point proxy module receives the communication request of the client application module forwarded by the workstation proxy module, the communication request is initiated by the client application module to the remote server, and the communication request makes the workstation The proxy module establishes and maintains a third communication session with the client application module on behalf of the remote server;

The AP proxy module establishes and maintains the first communication session with the remote server on behalf of the client application module.

According to some embodiments of the present invention, in the above working method, the step B may include:

Step B1, the access point agent module receives and caches the traffic from the remote server through the first communication session;

Step B2, the access point proxy module converts the transmission mode of the traffic according to the business attribute of the traffic, and sends the traffic to the workstation proxy module through the second communication session according to the converted transmission mode the traffic.

According to some embodiments of the present invention, in the above working method,

When the business attribute of the traffic is a single-file non-real-time business, the step B2 includes:

When the buffered traffic reaches a preset size or the buffering time reaches a preset threshold, the AP proxy module sends the buffered traffic through the second communication session in a burst sending mode.

According to some embodiments of the present invention, in the above working method, the step B may include:

When the business attribute of the traffic is multi-file transfer business, the step B2 includes:

The access point proxy module obtains a plurality of files associated with each other from the traffic;

The access point proxy module compresses the plurality of files into a compressed file, and sends the compressed file to the workstation proxy module through the second communication session.

Some embodiments of the present invention provide a wireless access point, including:

The wireless interface module is used for communicating with the wireless workstation, and the workstation agent module and the client application module are arranged in the wireless workstation;

The access point agent module is used to establish and maintain the first communication session with the remote server on behalf of the client application module, wherein the workstation agent module represents the remote server and communicates with the client A third communication session is established and maintained between the application modules;

The access point proxy module is further configured to receive traffic from the remote server through the first communication session, convert the transmission mode of the traffic, and communicate with the workstation proxy according to the converted transmission mode. A second communication session established between the modules, sending the traffic to the workstation proxy module;

Wherein, the converted transmission mode improves the transmission efficiency of the traffic on the second communication session, and shortens the session duration of the second communication session.

According to some embodiments of the present invention, the above wireless access point may further include:

A sleep control module, configured to control the wireless interface module to sleep during the intermittent period of the traffic transmission and/or after the traffic is sent.

According to some embodiments of the present invention, in the above wireless access point, the access point agent module includes:

The request receiving unit is configured to receive the communication request of the client application module forwarded by the workstation agent module, the communication request is initiated by the client application module to the remote server, and the communication request makes the The workstation proxy module establishes and maintains a third communication session with the client application module on behalf of the remote server;

The session maintenance unit is configured to establish and maintain the first communication session with the remote server on behalf of the client application module.

According to some embodiments of the present invention, in the above wireless access point, the access point agent module includes:

A cache unit, configured to receive and cache traffic from a remote server through the first communication session;

The sending unit is configured to convert the transmission mode of the traffic according to the service attribute of the traffic, and send the traffic to the workstation agent module through the second communication session according to the converted transmission mode.

According to some embodiments of the present invention, in the above wireless access point, the sending unit is further configured to: when the service attribute of the traffic is a single-file non-real-time service, when the buffered traffic reaches a preset size Or when the buffering time reaches a preset threshold, the buffered traffic is sent through the second communication session in a burst sending mode.

According to some embodiments of the present invention, in the wireless access point above, the sending unit is further configured to obtain multiple files associated with each other from the flow when the service attribute of the flow is a multi-file transmission service, Compressing the plurality of files into one compressed file, and sending the compressed file to the workstation agent module through the second communication session.

Some embodiments of the present invention also provide a working method of a wireless workstation, wherein the wireless workstation is provided with a workstation agent module and a client application module, and the method includes:

The workstation agent module receives the communication request initiated by the client application module to the remote server;

The workstation proxy module establishes and maintains a third communication session with the client application module on behalf of the remote server;

The workstation proxy module forwards the communication request of the client application module to the wireless access point, so that the wireless access point establishes and maintains the first communication with the remote server on behalf of the client application module. a communication session;

The workstation agent module receives the traffic from the remote server forwarded by the wireless access point, the forwarding of the traffic is that the wireless access point converts the transmission mode of the traffic, and according to the converted transmission mode , sent through the second communication session established with the workstation agent module; wherein, the converted transmission mode improves the transmission efficiency of the traffic on the second communication session and shortens the the session duration of the second communication session;

The workstation proxy module sends the traffic to the client application module through the third communication session.

According to some embodiments of the present invention, in the above method, the workstation proxy module receiving the traffic from the remote server forwarded by the wireless access point may include:

The workstation proxy module receives the traffic sent by the wireless access point in burst mode, wherein the burst mode transmission is when the traffic cached by the access point proxy module reaches a preset size or the cache time reaches a preset triggered by a threshold.

According to some embodiments of the present invention, in the above method, the workstation proxy module receiving the traffic from the remote server forwarded by the wireless access point may include:

The workstation agent module receives the traffic sent by the wireless access point, wherein the traffic includes a file obtained by compressing multiple files associated with each other by the wireless access point.

Some embodiments of the present invention also provide a wireless workstation, including:

The client application module is used to establish and maintain a communication session with a remote server, and provide local services for users;

The workstation agent module is used for:

receiving a communication request initiated by the client application module to the remote server, and establishing and maintaining a third communication session with the client application module on behalf of the remote server;

Forwarding the communication request of the client application module to a wireless access point, so that the wireless access point establishes and maintains a first communication session with the remote server on behalf of the client application module;

receiving the traffic from the remote server forwarded by the wireless access point, the forwarding of the traffic is that the wireless access point converts the transmission mode of the traffic, and according to the converted transmission mode, communicates with the Sent by the second communication session established between the workstation proxy modules; wherein, the converted transmission mode improves the transmission efficiency of the traffic on the second communication session and shortens the second communication session session duration for ; and,

The traffic is sent to the client application module through the third communication session.

According to some embodiments of the present invention, in the above wireless workstation:

The workstation proxy module is further configured to receive the traffic sent by the wireless access point in burst mode, wherein the burst mode transmission is that the traffic buffered by the access point proxy module reaches a preset size or Triggered when the cache time reaches the preset threshold.

According to some embodiments of the present invention, in the above wireless workstation:

The workstation agent module is further configured for the workstation agent module to receive the flow sent by the wireless access point, wherein the flow includes one of the plurality of files compressed by the wireless access point document.

As can be seen from the above, the wireless access point, wireless workstation and their respective working methods provided by the present invention have the following beneficial effects:

1. By introducing the proxy module into the wireless access point and the wireless workstation, the energy-saving operation in the wireless access point is transparent to the remote server and the client application module, so that the wireless access point and the wireless workstation are established In the case of keeping the communication sessions alive, the periodic sleep of the wireless interface module in the wireless access point is guaranteed, which greatly prolongs the sleep time of the wireless access point, increases the energy saving efficiency of the wireless access point, and reduces the Impact on original communication services.

2. By introducing the proxy module into the wireless access point and the wireless workstation, the independence of communication between the wireless access point and the wireless workstation is ensured. The access point proxy module and the workstation proxy module can realize The conversion of the data transmission mode between the wireless access point and the wireless workstation (traffic pattern shaping), and then the introduction of data packet aggregation burst or multi-file compression to improve the efficiency of data transmission, thereby shortening the working time of the wireless access point and improving the wireless Energy efficiency of access points.

Description of drawings

FIG. 1 is a schematic diagram of a scenario in which a wireless access point is responsible for network access of a wireless workstation in the prior art.

FIG. 2 is a schematic diagram of an application scenario of an embodiment of the present invention;

FIG. 3 is a schematic flowchart of a working method of a wireless access point provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a wireless access point provided by an embodiment of the present invention;

FIG. 5 is a schematic flowchart of a working method of a wireless workstation provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a wireless workstation provided by an embodiment of the present invention;

Fig. 7 is a schematic diagram of a specific application example of the embodiment of the present invention.

Detailed ways

The inventor conducted in-depth research on the energy-saving schemes of wireless access points commonly used in the prior art, and found that the current common energy-saving schemes of wireless access points and their disadvantages are as follows:

1. Full sleep mode: When all wireless workstations connected to the wireless access point are not working, the wireless access point automatically enters the sleep mode, and the power supply of all or part of its modules is cut off. In this solution, after the wireless access point enters the sleep state, it will not be able to respond to any request from the wireless workstation, and the wireless access point can only be woken up through external intervention (such as a user button). The advantage of this solution is that it is simple and easy to implement. The disadvantage is that it cannot automatically wake up the wireless access point, so it has a great impact on the communication between the wireless access point and the wireless workstation. It is usually only used in scenarios where the wireless workstation does not work for a long time.

2. Semi-sleep mode (sleep/work switching mode): When all wireless workstations connected to the wireless access point are not working, the wireless access point enters the sleep/work switching mode, that is, the wireless access point divides the time It is an alternate sleep and work time period, wherein during the sleep time period, the wireless access point partially cuts off the power supply and stops communicating with the outside world, and during the work time period, the wireless access point automatically changes from the sleep state to the working state (capable Normal receiving and sending signals), if no association and communication request from the wireless workstation is found during the working time period, after the working time period ends, the wireless access point enters the sleep state again, and so on and on; if during the working time After receiving the association and communication request from the wireless workstation, the wireless access point will exit the sleep/work switching mode and enter the normal working mode. The advantage of this solution is that the wireless access point can automatically switch between the sleep state and the working state, thereby reducing the impact of the sleep operation on the wireless workstation. Its disadvantages are: the sleep time is short, and the frequent switching between sleep and work reduces the energy saving efficiency.

The inventors found that the energy-saving mechanism of the wireless access point in the prior art has the following limitations:

1) The implementation of energy-saving measures only occurs when there is no communication activity between the wireless access point and the wireless workstation, that is, the communication session from the client application in the wireless workstation to the service program in the remote server has ended . Therefore, in the existing mechanism, it is almost impossible to enter the dormant state during the running of the application program on the wireless workstation, so that the dormant time is short and the energy saving effect is poor.

2) The existing mechanism only depends on the communication state between the wireless access point and the wireless workstation, but does not comprehensively consider the service requirements of the upper layer, so its energy saving efficiency is low.

The present invention provides a working method of a wireless access point/workstation, so that the wireless access point can obtain more dormancy time, thereby improving the energy-saving efficiency of the access point, and at the same time reducing the impact of dormancy on the wireless access point and the wireless workstation. The impact on communication between them is minimized. In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Please refer to the application scenario of the embodiment of the present invention shown in FIG. 2 . In the embodiment of the present invention, two agent modules are respectively embedded in the wireless access point and the wireless workstation, wherein the agent module in the wireless access point is called an access point agent module, and the agent module in the wireless workstation is called a workstation agent module . The concrete scheme of the embodiment of the present invention is as follows:

Step 1) The access point agent and the workstation agent divide the original communication session between the original client application module and the remote server application module into three independent communication sessions: first, second and third communication sessions. The access point proxy module maintains the communication with the remote server application module through the first communication session on behalf of the client application module; the workstation proxy module maintains the communication with the proxy client application module through the third communication session on behalf of the remote server application module; The second communication session between the entry point agent module and the workstation agent module is independent of the original communication session, and can communicate in any way that helps the wireless access point save energy; the first and third communication sessions can use the original communication session Sessions with the same communication protocol, such as communication protocol 1. The above processing is transparent to the application modules in the workstation and server, that is, the client application module in the workstation does not know any changes in the communication session, and still thinks that it is successfully established and maintained with the server application module in the remote server. communication session.

Here, the above-mentioned communication session may be established according to the protocol adopted by the session. Similarly, the keep-alive of the first and third communication sessions can be maintained according to the specific protocol adopted by the session. For example, one end can periodically send a keep-alive message/heartbeat packet, and the other end can receive the keep-alive packet/heartbeat packet to decide whether to maintain the session.

Through the above method, one communication session originally established between the client application module and the server application module is replaced by three communication sessions, and the first communication session is maintained through the access point agent module, and the third communication is maintained through the workstation agent module Session, so that both the server application module and the client application module think that the session with the other party is in a keep-alive state, which can avoid the problem that the application module releases the corresponding resources due to session termination and causes the communication between the two to be unreachable.

Step 2) Under the premise of the above step 1, the access point agent module and the workstation agent module complete the conversion (traffic pattern shaping) of the data transmission mode between the wireless access point and the wireless workstation through the second communication session, and the mode conversion can be based on Adaptively select a conversion scheme according to different requirements of upper-layer services: the access point proxy module receives and caches the traffic from the server application module through the first communication session; according to the business attributes of the traffic, the transmission mode of the traffic performing conversion, and sending the traffic to the workstation agent module through the second communication session according to the converted transmission mode. In this way, the converted transmission mode improves the transmission efficiency of the traffic on the second communication session, and shortens the session duration of the second communication session.

Since the efficiency of traffic transmission is improved, the embodiment of the present invention can reduce the maintenance time of the second communication session, so that the wireless access point can control its wireless interface during the intermittent period of traffic transmission and/or after the traffic is sent. The module sleeps to save power consumption, which can reduce the power consumption of the device.

The following examples illustrate the optional solutions for data transmission mode conversion, and the present invention is not limited to the following examples:

a) Packet accumulation and burst (packet accumulation & burst): The data from the remote server is not directly sent to the corresponding wireless workstation, but is cached (converged) in the wireless access point. When the amount of cached data Or when the cache time reaches a certain value, all cached data is sent from the wireless access point to the wireless client in a burst mode. This solution is applicable to non-real-time transmission of single files, such as FTP services. Here, the cache time refers to the cache time of the data that first arrives at the wireless access point among all the cached data.

b) Multi-file compression: multiple related files received from the remote server are compressed into one file, and then the compressed file is transmitted from the wireless access point to the wireless workstation. This solution is applicable to multiple file transfer services, such as Web browsing services.

It can be seen from the above that the embodiment of the present invention provides a wireless access point energy-saving solution based on a proxy module, which can communicate from the client application in the wireless workstation to the application service module in the remote server. In the case of keeping the session alive, perform sleep operation on the wireless access point, which prolongs the sleep time of the wireless access point and improves the energy saving effect. At the same time, the embodiments of the present invention take into account the different requirements of upper-layer services, adjust the communication transmission mode between the wireless access point and the wireless workstation under the condition of ensuring user experience, and provide a flexible sleep mode based on different service requirements. Thereby reducing sleep/working switching frequency and improving energy saving efficiency.

The embodiments of the present invention will be further described below from the sides of the wireless access point and the wireless workstation respectively.

Please refer to Fig. 3, the embodiment of the present invention provides a working method of a wireless access point, the wireless access point is provided with an access point agent module and a wireless interface module, and the wireless access point can pass through the wireless interface The module communicates with the wireless workstation, and the wireless workstation is provided with a workstation agent module and a client application module. Referring to Figure 3, the method includes:

Step 31, the access point proxy module set in the wireless access point, on behalf of the client application module, establishes and maintains the first communication session with the remote server, wherein the workstation proxy module represents the remote The end server establishes and maintains a third communication session with the client application module;

Step 32, the access point proxy module receives traffic from the remote server through the first communication session, converts the transmission mode of the traffic, and communicates with the workstation proxy module according to the converted transmission mode The second communication session established between, sends the traffic to the workstation proxy module;

Wherein, the converted transmission mode improves the transmission efficiency of the traffic on the second communication session, and shortens the session duration of the second communication session.

Through the above steps, the wireless access point can shorten the session duration of the second communication session, so that the wireless access point can control the wireless The interface module sleeps to reduce device power consumption.

Here, the above-mentioned step 31 may specifically include:

Step 311, the access point proxy module receives the communication request of the client application module forwarded by the workstation proxy module, the communication request is initiated by the client application module to the remote server, and the communication request makes The workstation agent module represents the remote server, and establishes and maintains a third communication session with the client application module;

Step 312, the AP proxy module establishes and maintains a first communication session with the remote server on behalf of the client application module.

Here, the access point proxy module will establish and maintain the first communication session with the remote server as the client application module, so as to realize the proxy of the client application module. Specifically, the identity of the client application module can be represented by the communication address of the client application module, such as IP address and port number.

The above-mentioned step 32 may specifically include:

Step 321, the access point proxy module receives and caches the traffic from the remote server through the first communication session;

Step 322, the access point proxy module converts the transmission mode of the traffic according to the service attribute of the traffic, and sends the traffic to the workstation proxy module through the second communication session according to the converted transmission mode the traffic.

For example, when the service attribute of the traffic is a single-file non-real-time service, in the step 322, the access point agent module may , sending the buffered traffic through the second communication session in a burst sending mode.

For another example, when the service attribute of the traffic is a multi-file transfer service, in the step 322, the access point proxy module may obtain multiple files associated with the traffic, and then transfer the multiple The file is compressed into a compressed file, and the compressed file is sent to the workstation agent module through the second communication session.

Based on the above method, the embodiment of the present invention also provides a wireless access point, as shown in FIG. 4, the wireless access point includes:

The wireless interface module is used for communicating with the wireless workstation, and the workstation agent module and the client application module are arranged in the wireless workstation;

The access point agent module is used to establish and maintain the first communication session with the remote server on behalf of the client application module, wherein the workstation agent module represents the remote server and communicates with the client A third communication session is established and maintained between the application modules;

The access point proxy module is further configured to receive traffic from the remote server through the first communication session, convert the transmission mode of the traffic, and communicate with the workstation proxy according to the converted transmission mode. A second communication session established between the modules, sending the traffic to the workstation proxy module;

Wherein, the converted transmission mode improves the transmission efficiency of the traffic on the second communication session, and shortens the session duration of the second communication session.

Preferably, the wireless access point may also include:

A sleep control module, configured to control the wireless interface module to sleep during the intermittent period of the traffic transmission and/or after the traffic is sent.

Preferably, the access point proxy module may include:

The request receiving unit is configured to receive the communication request of the client application module forwarded by the workstation agent module, the communication request is initiated by the client application module to the remote server, and the communication request makes the The workstation proxy module establishes and maintains a third communication session with the client application module on behalf of the remote server;

The session maintenance unit is configured to establish and maintain the first communication session with the remote server on behalf of the client application module.

Preferably, the access point proxy module may also include:

A cache unit, configured to receive and cache traffic from a remote server through the first communication session;

The sending unit is configured to convert the transmission mode of the traffic according to the service attribute of the traffic, and send the traffic to the workstation agent module through the second communication session according to the converted transmission mode.

As a preferred implementation manner, the sending unit is further configured to: when the service attribute of the traffic is a single-file non-real-time service, when the cached traffic reaches a preset size or the cache time reaches a preset threshold, Buffered traffic is sent over the second communication session in a burst sending mode.

As another preferred implementation manner, the sending unit is further configured to obtain a plurality of interrelated files from the flow when the service attribute of the flow is a multi-file transmission service, and compress the plurality of files into a compressed file, and send the compressed file to the workstation agent module through the second communication session.

Referring to FIG. 5 again, an embodiment of the present invention provides a working method of a wireless workstation, and the wireless workstation is provided with a workstation agent module and a client application module. As shown in Figure 5, the method includes:

Step 51, the workstation agent module receives the communication request initiated by the client application module to the remote server;

Step 52, the workstation proxy module establishes and maintains a third communication session with the client application module on behalf of the remote server;

Here, the workstation proxy module will establish and maintain the third communication session with the client application module as a remote server, so as to realize the proxy of the remote server. The identity of the remote server can be specifically represented by the communication address of the server application module, such as IP address and port number.

Step 53, the workstation agent module forwards the communication request of the client application module to the wireless access point, so that the wireless access point represents the client application module, establishes and maintains a communication with the remote server a first communication session between;

Step 54, the workstation agent module receives the traffic from the remote server forwarded by the wireless access point, the forwarding of the traffic is that the wireless access point converts the transmission mode of the traffic, and according to the converted The transmission mode is sent through the second communication session established with the workstation proxy module; wherein, the converted transmission mode improves the transmission efficiency of the traffic on the second communication session, a session duration of said second communication session is reduced;

Step 55, the workstation proxy module sends the traffic to the client application module through the third communication session.

Based on the working method of the wireless workstation described above, the embodiment of the present invention also provides a wireless workstation, as shown in Figure 6, the workstation includes a client application module and a workstation proxy module, wherein:

The client application module is used to establish and maintain a communication session with a remote server, and provide local services for users;

The workstation agent module is used for:

receiving the communication request initiated by the client application module to the remote server, and establishing and maintaining a third communication session with the client application module on behalf of the remote server;

Forwarding the communication request of the client application module to a wireless access point, so that the wireless access point establishes and maintains a first communication session with the remote server on behalf of the client application module;

receiving the traffic from the remote server forwarded by the wireless access point, the forwarding of the traffic is that the wireless access point converts the transmission mode of the traffic, and according to the converted transmission mode, communicates with the Sent by the second communication session established between the workstation proxy modules; wherein, the converted transmission mode improves the transmission efficiency of the traffic on the second communication session and shortens the second communication session session duration for ; and,

The traffic is sent to the client application module through the third communication session.

Here, the client application module can establish and maintain a communication session with the remote server and provide services for local users according to the prior art. In fact, the communication session has been divided into the above-mentioned first, second, and third communication sessions, but the embodiment of the present invention uses the proxy function of the workstation proxy module, so that the client application module still thinks that it is between the remote server and the remote server. A communication session is established and maintained.

Preferably, the workstation proxy module may be further configured to receive the traffic sent by the wireless access point in burst mode, wherein the burst mode transmission is when the traffic buffered by the access point proxy module reaches Triggered when the preset size or cache time reaches the preset threshold.

Preferably, the workstation proxy module can be further used for the workstation proxy module to receive the traffic sent by the wireless access point, wherein the traffic includes multiple files associated with each other by the wireless access point A compressed file.

Finally, with reference to FIG. 7 , taking the wireless access point as a mobile router and the wireless workstation as a WiFi workstation as an example, the specific implementation of the embodiment of the present invention is further described.

In this example, one end of the mobile router provides a WiFi interface for wireless connection with a WiFi workstation (such as a smart phone or a computer with a WiFi network port), and the other end is connected to the Internet (Internet) through a WAN port.

The access point agent module is embedded in the mobile router, as shown in Figure 7, which may specifically include the following modules/units:

Access Point Proxy (AP Proxy): It is mainly responsible for the following tasks: communicating with the remote server on behalf of the wireless workstation; maintaining the communication session with the service program; exchanging information and data with the wireless workstation;

Network Address Translation (NAT): responsible for the translation of network addresses;

Timer (Timer): provide sleep timing function;

Scheduler: complete timing scheduling;

Controller (Controller): switch the energy supply of the WiFi module;

Wakeup module (Wakeup): Provides the forced wakeup function of the access point.

The workstation agent module is embedded in the WiFi workstation, as shown in Figure 7, which may specifically include the following modules/units:

Workstation Proxy (STA Proxy): Mainly responsible for the following tasks: communicating with the client program on behalf of the remote server; maintaining a communication session with the client program; exchanging information and data with the wireless access point;

Network Address Translation (NAT): responsible for the translation of network addresses;

Virtual NIC: assist in establishing a communication channel between the workstation agent module and the client program;

Timer (Timer): provide sleep timing function;

Scheduler: complete timing scheduling;

Controller (Controller): switch the energy supply of the WiFi module.

Taking the application scenario shown in Figure 7 as an example, the steps to complete FTP data download in this scenario are as follows:

1) The client application module (Client App) initiates a control connection request to the remote server application module (Server app), and establishes a control connection from the client application module (Client App) to the workstation proxy (STAProxy), because the workstation proxy ( STA Proxy) provides the proxy service of the remote server (Server), so the client application module (Client App) still thinks that it has established a connection with the remote server program (Server App).

2) The workstation proxy (STA Proxy) transmits the information of the control connection established with the client application module (Client App) to the access point proxy (AP Proxy) through the channel (channel), and the access point proxy (AP Proxy) ) on behalf of the client application module (Client App) initiates a control connection request to the remote server application (Server app) and establishes a control connection.

3) Similarly, the establishment of the data connection is completed according to the above steps 1) and 2).

4) Start downloading files from the remote FTP server. First, the files are downloaded from the remote server application (Serverapp) to the access point proxy (AP Proxy). During this process, the WiFi interface of the wireless access point is closed (in sleep mode) .

5) After the file is downloaded, the WiFi interface is turned on (entering the working mode), and the downloaded data is transmitted from the access point proxy module (AP Proxy) to the workstation proxy (STA Proxy) in a burst mode. In order to improve the transmission efficiency, you can use Advanced wireless transmission technology, such as 802.11n aggregation technology.

6) After the data transmission is completed, the WiFi interface of the wireless access point is turned off (enters sleep mode).

7) The data is transmitted from the workstation agent (STA proxy) to the client application module (Client App) according to the FTP protocol to complete the entire FTP file download process

It can be seen from the above process that the entire FTP file download process is transparent to the remote server and client application modules, that is, the corresponding threads and conversations in the remote server and client application modules are always kept alive; while wireless access The wireless module in the point can be in a dormant state for a long time, thereby realizing the improvement of energy saving efficiency without affecting the original communication.

Can find out that this invention has following positive effect from above scheme description and embodiment introduction:

1. By introducing the proxy module into the wireless access point and the wireless workstation, the energy-saving operation in the wireless access point is transparent to the remote server and the client application module, so that the wireless access point and the wireless workstation are established In the case of keeping the communication sessions alive, the periodic sleep of the wireless module in the wireless access point is guaranteed, thereby greatly prolonging the sleep time of the wireless access point, increasing the energy saving efficiency of the wireless access point, and reducing the impact on the Impact on original communication services.

2. By introducing the proxy module into the wireless access point and the wireless workstation, the independence of communication between the wireless access point and the wireless workstation is ensured. The access point proxy module and the workstation proxy module can realize The conversion of the data transmission mode between the wireless access point and the wireless workstation (traffic pattern shaping), and then the introduction of data packet aggregation burst or multi-file compression to improve the efficiency of data transmission, thereby shortening the working time of the wireless access point and improving the wireless Energy efficiency of access points.

Many functional components described in this specification are referred to as modules in order to more particularly emphasize the independence of their implementation.

In the embodiments of the present invention, the modules may be implemented by software so as to be executed by various types of processors. An identified module of executable code may, by way of example, comprise one or more physical or logical blocks of computer instructions which may, for example, be structured as an object, procedure, or function. Notwithstanding, the executable code of an identified module need not be physically located together, but may comprise distinct instructions stored in different locations which, when logically combined, constitute the module and carry out the stated purpose of the module.

Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs and across multiple memory devices. Likewise, operational data may be identified within modules, and may be implemented in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed in different locations (including on different storage devices), and may exist, at least in part, only as electronic signals on a system or network.

When the module can be realized by software, considering the level of the existing hardware technology, the module that can be realized by software, regardless of the cost, those skilled in the art can build the corresponding hardware circuit to realize the corresponding function. The hardware circuit includes conventional very large scale integration (VLSI) circuits or gate arrays as well as existing semiconductors such as logic chips, transistors, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices, and the like.

The above is only the embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as Be the 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.

Images