CN105992166B - Wireless communication device and method for selecting optimal access device - Google Patents
Wireless communication device and method for selecting optimal access device Download PDFInfo
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- CN105992166B CN105992166B CN201510076157.7A CN201510076157A CN105992166B CN 105992166 B CN105992166 B CN 105992166B CN 201510076157 A CN201510076157 A CN 201510076157A CN 105992166 B CN105992166 B CN 105992166B
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Abstract
A wireless communication device includes an establishment module, a broadcast module, a calculation module, and a selection module. The establishing module is used for establishing the wireless communication device with the same service set identification and security identification with other wireless communication devices into a wireless network group. The broadcasting module is used for broadcasting the wireless network attribute information of the broadcasting module to other wireless communication devices which are up and down in the wireless network group and the client. The calculation module is used for calculating first transmission time required for transmitting the wireless network attribute information between the wireless communication equipment and other online wireless communication equipment, and calculating second transmission time of the wireless network attribute information received by the client. The selection module is used for selecting the best wireless access equipment according to the first transmission time and the second transmission time. The invention also provides a method for selecting the best access equipment by the wireless communication equipment. The wireless communication equipment and the method for selecting the optimal access equipment can quickly and accurately select the optimal access equipment according to actual conditions.
Description
Technical Field
The present invention relates to wireless network communications, and more particularly, to a wireless communication device and a method for selecting an optimal access device.
Background
With the rapid development of wireless network communication, the user's requirements for using the wireless network are higher and higher, for example, the selection of the wireless access device needs to be more humanized. However, when the client selects to connect to the router or the relay in the wireless network, the wireless access device with the optimal rate required by the client will change continuously due to the abundance of the wireless access devices and the mobility of the client, and therefore, how to quickly and accurately find the optimal access device in the wireless network for the client is an urgent problem to be solved.
Disclosure of Invention
In view of the above, it is desirable to provide a wireless communication device that can quickly select a wireless network access device to obtain an optimal network rate.
In addition, a method for selecting the best access device by the wireless communication device is also needed to obtain the best network rate.
The embodiment of the invention provides wireless communication equipment which comprises an establishing module, a broadcasting module, a calculating module and a selecting module. The establishing module is used for establishing the wireless communication device with the same service set identification and security identification with other wireless communication devices into a wireless network group, wherein the wireless communication device and the other wireless communication devices form an up-down relationship. The broadcasting module is used for broadcasting the wireless network attribute information of the broadcasting module to other wireless communication devices which are up and down in the wireless network group and the client. The calculation module is used for calculating first transmission time required by the wireless communication equipment for transmitting the wireless network attribute information to other online wireless communication equipment and calculating second transmission time required by the wireless communication equipment for transmitting the wireless network attribute information to the client. The selection module is used for receiving the wireless access equipment selection request information of the client and selecting the best wireless access equipment according to the first transmission time and the second transmission time.
Preferably, the selection module is further configured to select the best wireless access device according to a minimum value of a sum of the first transmission time and the second transmission time.
Preferably, the wireless network attribute information includes a service set identifier, a security identifier, and a number of streams.
Preferably, the calculating module is further configured to calculate a first transmission time according to the first cyclic transmission time and the first cyclic signal transmission rate, where the first transmission time is equal to the first cyclic transmission time divided by the first cyclic signal transmission rate.
Preferably, the first cyclic transmission time is a round trip transmission time required for transmitting the wireless network attribute information between the wireless communication device and other wireless communication devices on line, and the first cyclic signal transmission rate is equal to a single signal transmission rate multiplied by the number of streams, where the single signal transmission rate is a signal transmission rate at which the wireless communication device transmits the wireless network attribute information to other wireless communication devices on line.
Preferably, the calculating module is further configured to calculate a second transmission time according to the second cyclic transmission time and a second signal transmission rate, where the second transmission time is equal to the second cyclic transmission time divided by the second signal transmission rate.
preferably, the second cycle transmission time is a round trip transmission time required for transmitting the wireless network attribute information between the wireless communication device and the client.
preferably, the calculating module is further configured to monitor a second received signal strength of the client, and calculate the second signal transmission rate according to a corresponding relationship between the second received signal strength and the second signal transmission rate.
Preferably, the calculation module includes a preset submodule, a monitoring submodule, a comparison submodule, and a matching submodule. The preset submodule is used for establishing a first corresponding relation between the default received signal strength of the client and the index value in the modulation and coding strategy table. The monitoring submodule is used for monitoring the received signal strength and the corresponding signal transmission rate of the client in a set period when the client is connected with the wireless communication equipment, obtaining different signal transmission rates with the same received signal strength, calculating the average value of the different signal transmission rates, and finding out the index value corresponding to the average value in the modulation and coding strategy table, thereby obtaining a second corresponding relation between the received signal strength and the index value. The comparison submodule is used for comparing the first corresponding relation with the second corresponding relation, taking the index value as a reference, and adjusting the larger received signal strength value into the optimal corresponding relation between the final received signal strength and the index value. The matching submodule is used for matching according to the optimal corresponding relation and the corresponding relation between the index value in the modulation and coding strategy table and the signal transmission rate to obtain the corresponding relation between the strength of the second received signal and the second signal transmission rate.
Preferably, the calculating module is further configured to monitor the received signal strengths of the client at the new best access device and the original best access device when the client is in the roaming state and detects the new best access device, and calculate a difference between the received signal strengths of the new best access device and the original best access device.
Preferably, the selecting module is further configured to keep the previous best access device to allow the client to connect when the difference between the received signal strengths of the new best access device and the previous best access device is smaller than a threshold value.
Preferably, the selecting module is further configured to connect the client to the new best access device when the difference between the received signal strengths of the new best access device and the original best access device is not less than the threshold value.
The method for selecting the best access equipment by the wireless communication equipment provided by the embodiment of the invention comprises the following steps: establishing a wireless communication device with the same service set identifier and security identifier with other wireless communication devices into a wireless network group, wherein the wireless communication device and the other wireless communication devices form an up-down relationship; broadcasting wireless network attribute information of the wireless network group to other wireless communication devices which are up and down in the wireless network group and the client; calculating first transmission time required by the wireless communication equipment for transmitting the wireless network attribute information to other online wireless communication equipment, and calculating second transmission time required by the wireless communication equipment for transmitting the wireless network attribute information to the client; and receiving wireless access equipment selection request information of the client, and selecting the best wireless access equipment according to the first transmission time and the second transmission time.
Preferably, the method further comprises: and selecting the best wireless access equipment according to the minimum value of the sum of the first transmission time and the second transmission time.
preferably, the wireless network attribute information includes a service set identifier, a security identifier, and a number of streams.
preferably, the first transmission time is calculated according to the first cycle transmission time and the first cycle signal transmission rate, wherein the first transmission time is equal to the first cycle transmission time divided by the first cycle signal transmission rate.
Preferably, the first cyclic transmission time is a round trip transmission time required for transmitting the wireless network attribute information between the wireless communication device and other wireless communication devices on line, and the first cyclic signal transmission rate is equal to a single signal transmission rate multiplied by the number of streams, where the single signal transmission rate is a signal transmission rate at which the wireless communication device transmits the wireless network attribute information to other wireless communication devices on line.
Preferably, the second transmission time is calculated according to the second cyclic transmission time and the second signal transmission rate, wherein the second transmission time is equal to the second cyclic transmission time divided by the second signal transmission rate.
Preferably, the second cycle transmission time is a round trip transmission time required for transmitting the wireless network attribute information between the wireless communication device and the client.
Preferably, the second received signal strength of the client is monitored, and the second signal transmission rate is calculated according to the corresponding relationship between the second received signal strength and the second signal transmission rate.
preferably, the method for calculating the correspondence between the second received signal strength and the second signal transmission rate includes: establishing a first corresponding relation between the default received signal strength of the client and an index value in a modulation and coding strategy table; when the client is connected with the wireless communication equipment, monitoring the received signal strength and the corresponding signal transmission rate of the client in a set period, obtaining different signal transmission rates with the same received signal strength, calculating the average value of the different signal transmission rates, and finding out the index value corresponding to the average value in the modulation and coding strategy table so as to obtain a second corresponding relation between the received signal strength and the index value; comparing the first corresponding relation with the second corresponding relation, taking the index value as a reference, and adjusting the larger received signal strength value into the optimal corresponding relation between the final received signal strength and the index value; and matching the optimal corresponding relation with the corresponding relation between the index value in the modulation and coding strategy table and the signal transmission rate to obtain the corresponding relation between the second received signal strength and the second signal transmission rate.
Preferably, when the client is in the roaming state and detects a new best access device, the received signal strengths of the client between the new best access device and the original best access device are monitored, and the difference between the received signal strengths of the new best access device and the original best access device is calculated.
Preferably, when the difference between the received signal strengths of the new best access device and the original best access device is smaller than the threshold value, the original best access device is kept to allow the client to connect.
Preferably, when the difference between the received signal strengths of the new best access device and the original best access device is not less than the threshold value, the client is connected to the new best access device.
The wireless communication equipment and the method for selecting the best access equipment can establish the wireless communication equipment with the same service set identification and security identification into a wireless network group, enable the access state of the client to be monitored and mutually transmitted among a plurality of wireless communication equipment after a network cluster management protocol is established in the wireless network group, and select the best access equipment according to the information transmission time and the received signal strength.
Drawings
Fig. 1 is a diagram of an application environment of an embodiment of a wireless communication device according to the present invention.
Fig. 2 is a functional block diagram of an embodiment of a wireless communication device according to the present invention.
Fig. 3 is a functional block diagram of another embodiment of a wireless communication device according to the present invention.
Fig. 4 is a diagram illustrating an embodiment of a mapping relationship between a matching signal transmission rate and a received signal strength of a wireless communication device according to the present invention.
Fig. 5 is a diagram illustrating an embodiment of selecting the best access device when the wireless communication device roams among the clients according to the present invention.
fig. 6 is a flowchart of an embodiment of a method for a wireless communication device to select a best access device according to the present invention.
Fig. 7 is a flowchart of a method for calculating a first transmission time by a wireless communication device according to an embodiment of the present invention.
Fig. 8 is a flowchart of a method for calculating a second transmission time by a wireless communication device according to an embodiment of the present invention.
Description of the main elements
Wireless communication device 10,12
repeater A21
Repeater B22
Repeater C23
Client 30
Building blocks 210,310
Broadcast module 220,320
computing modules 230,330
Selection module 250,350
preset submodule 2310,3310
Monitoring submodule 2320,3320
Comparison submodule 2330,3330
Matching submodule 2340,3340
memory 360
Processor 370
Detailed Description
Referring to fig. 1, a diagram of an application environment of an embodiment of a wireless communication device 10 is shown. In the present embodiment, a plurality of wireless communication devices 10 are connected to each other through a wireless network, the plurality of wireless communication devices 10 serve as an access device to provide a wireless network service for the client 30, and the plurality of wireless communication devices together form a wireless network group 100, and the client 30 selects one of the plurality of wireless communication devices 10 to connect according to the strength of a wireless network signal. The wireless communication device 10 may be a router or a gateway, and the wireless communication device 10 closer to the client 30 may also be a relay.
In this embodiment, the wireless communication device 10 establishes a specific wireless network group 100 according to the wireless communication devices 10 having the same service set identifier and security code identifier, and each device of the wireless network group broadcasts information in a customized network group management protocol to monitor and manage the optimal selection of the access device of the client 30.
After the wireless network group 100 is established, the wireless communication devices 10 broadcast information to each other and calculate the time required for broadcasting information between the wireless communication devices 10, and at the same time, the wireless communication devices broadcast information to the client 30 to obtain the time required for broadcasting information to the client, and finally, the access device with the shortest broadcast time is selected for the client 30 to connect according to the sum of the two calculated broadcast times.
Referring to fig. 2, a functional block diagram of an embodiment of a wireless communication device 10 of the present invention is shown. In this embodiment, the wireless communication device 10 includes a setup module 210, a broadcast module 220, a calculation module 230, and a selection module 250.
In this embodiment, the establishing module 210 establishes a plurality of wireless communication devices 10 having the same service set identifier and security identifier as a wireless network group 100, and establishes a customized network cluster management protocol for transmitting information between the wireless communication devices, where the specific network cluster management protocol is shown in table 1.
TABLE 1 network Cluster management protocol
| Data form | Transmission mode | Description of the invention |
| Notification | Broadcasting | Timed delivery of notification of hardware attributes and presence of nearby access devices themselves |
| Push-in | Single propagation | For requesting the other party to access the equipment to which the wireless device is connected |
| Interrogation | single propagation | After receiving the access request of the client, inquiring other access devices about the monitoring condition of the client |
| Notification | Single propagation | notify other access devices that a client has connected to itself |
| Responses | Single propagation | the client connects itself and sends the monitoring state of the client to other access devices at regular time |
| Change of | Single propagation | For deciding to connect own client to other access equipment |
As can be seen from table 1, the network cluster management protocol includes data form, transmission mode and corresponding description of information, and the wireless communication device 10 may be referred to as an access device. Specifically, the transmission modes include broadcasting and single propagation, the data forms include notification, pushing, inquiring, replying and changing, and each different data form has different descriptions. In the wireless group network, the access device broadcasts its own hardware attribute regularly to inform the nearby access device of its existence and corresponding attribute, when the access device has connected with client, it informs other access devices that the client has connected with itself, and sends the monitoring state of the client to other access devices regularly, and when the access device receives the request of the client, it will inquire the monitoring state of the client from other access devices in advance. When the access device needs to be changed, the change information is transmitted to enable the client connected with the client to be connected with other access devices.
When the wireless communication device 10 is in the wireless network group 100, the broadcasting module 220 broadcasts the wireless network attribute information of itself to other wireless communication devices on the uplink and the downlink of the wireless network group according to the network trunking management protocol, and meanwhile, the broadcasting module 220 also broadcasts the wireless network attribute information of itself to the client 30, that is, the wireless communication devices 10 in the wireless network group broadcast the wireless network attribute information of themselves to other wireless communication devices close to themselves, so as to obtain the wireless network attribute information of themselves and the monitoring state of the client 30. The wireless network attribute information comprises a service set identifier, a security identifier and a stream number.
After the broadcast information is transmitted, the calculating module 230 calculates an online transmission time required for transmitting the wireless network attribute information between the wireless communication device 10 and another wireless communication device online, and is referred to as a first transmission time, and the calculating module 230 also calculates a transmission time for the wireless communication device 10 to transmit the wireless network attribute information to the client 30, and is referred to as a second transmission time. Thus, each wireless communication device 10 can know the transmission time of itself and other wireless communication devices on line, and the transmission time between the wireless communication device 10 on the lowest line and the wireless communication device 10 on the highest line can be calculated. Wherein the top-most wireless communication device 10 may have a gateway or router and the bottom-most wireless communication device 10 may be the closest relay to the client 30.
For example, there are two wireless communication devices 10 in the wireless network group 100, the wireless communication device 10 on the line is a gateway, the wireless communication device 10 on the line is a repeater, the first transmission time calculated by the calculation module is the time required for transmitting the wireless network attribute information between the gateway and the repeater, and the second transmission time is the time required for transmitting the wireless network attribute information between the repeater and the client.
Then, the selection module 250 receives the wireless access device selection request information of the client 30, and selects the corresponding wireless communication device 10 for the client 30 according to the minimum value of the sum of the first transmission time and the second transmission time. Specifically, when the transmission time of the wireless communication device 10 is the shortest, the wireless communication device 10 is selected to provide the wireless network access service for the client 30.
As a further illustration of the present embodiment, the calculating module 230 calculates a first transmission time according to the first cyclic transmission time and the first cyclic signal transmission rate, wherein the first transmission time is equal to the first cyclic transmission time divided by the first cyclic signal transmission rate. The first cyclic transmission time is a round trip transmission time required for transmitting the wireless network attribute information between the wireless communication device 10 and the other wireless communication devices on line, the first cyclic signal transmission rate is equal to a single signal transmission rate multiplied by the number of streams, and the single signal transmission rate is a signal transmission rate for transmitting the wireless network attribute information from the wireless communication device 10 to the other wireless communication devices on line.
As a further illustration of the present embodiment, the calculating module 230 calculates a second transmission time according to a second cyclic transmission time and a second signal transmission rate, wherein the second transmission time is equal to the second cyclic transmission time divided by the second signal transmission rate. Wherein the second cycle transmission time is a round trip transmission time required for transmitting the wireless network attribute information between the wireless communication device 10 and the client 30.
the calculating module 230 monitors the second received signal strength of the ue 30 and calculates the second signal transmission rate according to the corresponding relationship between the second received signal strength and the second signal transmission rate.
As a further illustration of the embodiment, the calculating module 230 includes a plurality of sub-modules, including a presetting sub-module 2310, a monitoring sub-module 2320, a comparing sub-module 2330 and a matching sub-module 2340, where the sub-modules are configured to calculate a corresponding relationship between the second received signal strength and the second signal transmission rate.
The presetting sub-module 2310 establishes a first correspondence between the default received signal strength of the ue 30 and an index value in a Modulation and Coding Scheme (MCS) table.
when the client 30 is connected to the wireless communication device 10, the monitoring sub-module 2320 monitors the received signal strength and the corresponding signal transmission rate of the client 30 in a set period, obtains different signal transmission rates with the same received signal strength, calculates an average value of the different signal transmission rates, and finds out an index value corresponding to the average value in the modulation and coding policy table, thereby obtaining a second corresponding relationship between the received signal strength and the index value.
When the client 30 is not connected to the wireless communication device 10, the wireless communication device 10 cannot obtain the signal transmission rate related to the client 30, and therefore, other signal parameters related to the client 30 need to be found to obtain the signal transmission rate.
In this way, the comparison sub-module 2330 compares the first correspondence with the second correspondence, and adjusts the received signal strength value to the final best correspondence with the index value with reference to the index value.
The matching sub-module 2340 matches the optimal correspondence with the correspondence between the index values in the modulation and coding policy table and the signal transmission rates to obtain a correspondence between the second received signal strength and the second signal transmission rate.
Thus, the corresponding signal transmission rate can be found only by monitoring and calculating the received signal strength of the client 30, and a specific example can be seen in fig. 4.
fig. 4 is a diagram illustrating an embodiment of matching the transmission rate and the received signal strength of the wireless communication device 10 according to the present invention. As can be seen from the example, the index values represent index values 0 to 7 in the modulation and coding policy table, and correspond to different default received signal strengths and actual signal strengths according to different index values, and correspond to a plurality of different signal transmission rates in the actual received signal, such as 3 different signal transmission rates listed in the figure, and calculate an average value of the 3 signal transmission rates, where the average value forms a corresponding relationship with the actual received signal strength, so that the corresponding relationship between the signal transmission rate and the received signal strength is matched. It should be noted that, when the above matching is performed, it is required to perform the above measurements in the network environment of the same wireless network group 100, as shown in fig. 4, and the above measurements are performed at a frequency of 20MHz, although there are other corresponding conditions, which are not listed here.
Continuing to refer to fig. 2, as a further illustration of the present embodiment, when the client 30 is in the roaming state and detects a new best access device, the calculating module 230 monitors the received signal strengths of the client 30 at the new best access device and the original best access device, and calculates the difference between the received signal strengths of the new best access device and the original best access device.
when the difference between the received signal strengths of the new best access device and the original best access device is smaller than the threshold, the selection module 250 selects the original best access device to allow the client 30 to connect. The selecting module 250 allows the client 30 to connect to the new best access device when the difference between the received signal strengths of the new best access device and the previous best access device is not less than the threshold value.
Specific embodiment fig. 5 shows an exemplary diagram of an embodiment of selecting the best access device when the wireless communication device 10 of the present invention roams among clients in fig. 5. In this embodiment, the wireless communication device 10 further includes a specific relay a 21, a specific relay b 22, and a specific relay c 23. When the client 30 roams, the best access device before roaming is the relay a 21, and when the client 30 roams, the best access device selected by the wireless communication device 10 is the relay c 23, the calculating module 230 monitors the received signal strengths of the client 30 at the relay a 21 and the relay c 23, and calculates the difference between the received signal strengths of the relay a 21 and the relay c 23. When the difference between the received signal strengths of the first repeater 21 and the third repeater 23 is less than the threshold, the selection module 250 selects the first repeater 21 to connect to the client 30. When the difference between the received signal strengths of the repeater a 21 and the repeater c 23 is not less than the threshold value, the selection module 250 allows the client 30 to connect to the repeater c 23.
Referring to fig. 3, a functional block diagram of another embodiment of the wireless communication device 12 of the present invention is shown. In this embodiment, the wireless communication device 12 includes a setup module 310, a broadcast module 320, a calculation module 330, a selection module 350, a memory 360, and a processor 370. The setup module 310, the broadcast module 320, the calculation module 330, and the selection module 350 include software programs that are stored in the memory 360 and executed by the processor 370 to implement the corresponding functions of the respective modules. The specific functions of the establishing module 310, the broadcasting module 320, the calculating module 330, the matching module 340, and the selecting module 350 are the same as those of the establishing module 210, the broadcasting module 220, the calculating module 230, the matching module 240, and the selecting module 250 in fig. 2, and are not described herein again.
As a further description of the present embodiment, the calculating module 330 includes a preset sub-module 3310, a monitoring sub-module 3320, a comparing sub-module 3330 and a matching sub-module 3340, and the preset sub-module 3310, the monitoring sub-module 3320, the comparing sub-module 3330 and the matching sub-module 3340 are the same as the preset sub-module 2310, the monitoring sub-module 2320, the comparing sub-module 2330 and the matching sub-module 2340 in fig. 2, and are not described herein again.
Referring to fig. 6, a flowchart of an embodiment of a method for selecting the best access device for the wireless communication device 10 according to the present invention is shown. The method is used in the wireless communication device 10 of fig. 1 and is implemented by the functional modules shown in fig. 2 or fig. 3, and in this embodiment, the functional modules in fig. 2 are used to implement the method. It is stated here that the method can also be implemented using the functional modules in fig. 3.
in step S600, the establishing module establishes a wireless communication device and other wireless communication devices having the same service set identifier and security identifier as a wireless network group, and establishes a customized network cluster management protocol for transmitting information between the wireless communication devices, where the wireless communication devices and other wireless communication devices have an uplink-downlink relationship.
In step S602, the broadcasting module broadcasts wireless network attribute information of itself to other wireless communication devices and clients that are up and down in the wireless network group, where the wireless network attribute information includes a service set identifier, a security identifier, and a number of streams.
In step S604, the calculation module calculates a first transmission time required for the wireless communication device to transmit the wireless network attribute information to other online wireless communication devices, and calculates a second transmission time required for the wireless communication device to transmit the wireless network attribute information to the client.
In step S606, it is determined whether the client is in the roaming state, and if so, step S612 is executed, and if not, step S610 is executed.
In step S608, the selection module receives the wireless access device selection request information of the client, and selects the best wireless access device according to the first transmission time and the second transmission time.
In step S610, when the selection module detects a new best access device, the calculation module monitors the received signal strengths of the client between the new best access device and the original best access device, and calculates a difference between the received signal strengths of the new best access device and the original best access device.
When the difference between the received signal strengths of the new best access device and the previous best access device is less than the threshold value, step S612 is performed.
When the difference between the received signal strengths of the new best access device and the previous best access device is not less than the threshold value, step S614 is performed.
In step S612, the selection module selects the original best access device to allow the client to connect.
In step S614, the selection module lets the client connect to the new best access device.
Referring to fig. 7, a flowchart of an embodiment of a method for calculating a first transmission time by a wireless communication device according to the present invention is shown. The method is used in the wireless communication device 10 of fig. 1 and is implemented by the functional modules shown in fig. 2 or fig. 3, and in this embodiment, the functional modules in fig. 2 are used to implement the method. It is stated here that the method can also be implemented using the functional modules in fig. 3.
In step S700, the calculation module calculates a first cycle transmission time. The first cycle transmission time is one round trip transmission time required for transmitting wireless network attribute information between the wireless communication equipment and other wireless communication equipment on line.
In step S702, the calculation module calculates a first-cycle signal transmission rate. The first cycle signal transmission rate is equal to a single signal transmission rate multiplied by the number of the serial streams, and the single signal transmission rate is the signal transmission rate of the wireless communication equipment for transmitting the wireless network attribute information to other online wireless communication equipment.
In step S704, a first transmission time is calculated according to the first cycle transmission time divided by the first cycle signal transmission rate.
Referring to fig. 8, a flowchart of an embodiment of a method for calculating a second transmission time by a wireless communication device according to the present invention is shown. The method is used in the wireless communication device 10 of fig. 1 and is implemented by the functional modules shown in fig. 2 or fig. 3, and in this embodiment, the functional modules in fig. 2 are used to implement the method. It is stated here that the method can also be implemented using the functional modules in fig. 3.
In step S800, the calculation module calculates a second cycle transmission time. The second cycle transmission time is one round trip transmission time required for transmitting the wireless network attribute information between the wireless communication equipment and the client.
In step S802, the preset sub-module establishes a first correspondence between the default received signal strength of the client and the index value in the modulation and coding policy table;
In step S804, when the client is connected to the wireless communication device, the monitoring sub-module monitors the received signal strength and the corresponding signal transmission rate of the client in a set period, obtains different signal transmission rates with the same received signal strength, calculates an average value of the different signal transmission rates, and finds out an index value corresponding to the average value in the modulation and coding policy table, thereby obtaining a second corresponding relationship between the received signal strength and the index value;
In step S806, the comparing sub-module compares the first corresponding relationship with the second corresponding relationship, and adjusts the larger rssi value to the optimal rssi value with reference to the index value.
In step S808, the matching sub-module matches the index value in the modulation and coding policy table and the corresponding relationship between the index value and the signal transmission rate according to the optimal corresponding relationship to obtain a corresponding relationship between the second received signal strength and the second signal transmission rate.
In step S810, the selection module calculates a second signal transmission rate according to a second received signal strength of the ue.
In step S812, the calculating module calculates a second transmission time according to the second cycle transmission time divided by the second signal transmission rate.
It can be seen from the above embodiments that, the wireless communication device and the method for selecting the best access device thereof of the present invention can establish the wireless communication devices having the same service set identifier and security identifier into a wireless network group, and after a network cluster management protocol is established in the wireless network group, enable a plurality of wireless communication devices to monitor the access state of the client and transmit the access state to each other, and select the best access device according to the information transmission time and the received signal strength. Even if the client is in roaming state, it can determine whether the best access device needs to be changed according to the received signal strength.
The dual-processor wireless communication device and the method for selecting the best access device provided by the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by applying specific embodiments, and the descriptions of the above embodiments are only used to help understanding the inventive method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, the specific embodiments and the application scope may be changed, and in summary, the present disclosure should not be construed as limiting the present invention.
Claims (16)
1. A wireless communication device for communicating with other wireless communication devices to provide wireless network services to a client, the wireless communication device comprising:
The establishing module is used for establishing the wireless communication equipment with the same service set identification and security identification with other wireless communication equipment into a wireless network group, wherein the wireless communication equipment and the other wireless communication equipment form an up-down relationship;
The broadcasting module is used for broadcasting wireless network attribute information of the broadcasting module to the other wireless communication equipment which is on line or off line in the wireless network group and the client;
A calculating module, configured to calculate a first transmission time required for the wireless communication device to transmit the wireless network attribute information to the other online wireless communication devices, calculate a second transmission time required for the wireless communication device to transmit the wireless network attribute information to the client, and calculate the first transmission time according to a first cyclic transmission time and a first cyclic signal transmission rate, where the first transmission time is equal to the first cyclic transmission time divided by the first cyclic signal transmission rate, the wireless network attribute information includes the service set identifier, the security identifier, and a stream number, and the first cyclic transmission time is a round-trip transmission time required for transmitting the wireless network attribute information between the wireless communication device and the other online wireless communication devices, the first cyclic signal transmission rate is equal to a single signal transmission rate multiplied by the number of the serial streams, wherein the single signal transmission rate is the signal transmission rate of the wireless communication equipment for transmitting the wireless network attribute information to the other wireless communication equipment which is on-line; and
A selection module, configured to receive wireless access device selection request information of the client, select an optimal wireless access device according to the first transmission time and the second transmission time, and select the optimal wireless access device according to a minimum value of a sum of the first transmission time and the second transmission time.
2. The wireless communication device of claim 1, wherein the calculation module is further configured to calculate the second transmission time according to a second cyclic transmission time and a second signal transmission rate, wherein the second transmission time is equal to the second cyclic transmission time divided by the second signal transmission rate.
3. The wireless communication device of claim 2, wherein the second recurring transmission time is a one round trip transmission time required to transmit the wireless network property information between the wireless communication device and the client.
4. The wireless communication device as claimed in claim 2, wherein the calculating module is further configured to monitor a second received signal strength of the ue and calculate the second signal transmission rate according to a corresponding relationship between the second received signal strength and the second signal transmission rate.
5. The wireless communication device of claim 4, wherein the computing module comprises:
The preset submodule is used for establishing a first corresponding relation between the default received signal strength of the client and an index value in the modulation and coding strategy table;
A monitoring submodule, configured to monitor, when the client is connected to the wireless communication device, a received signal strength and a corresponding signal transmission rate of the client in a set period, obtain different signal transmission rates with the same received signal strength, calculate an average value of the different signal transmission rates, and find an index value corresponding to the average value in a modulation and coding policy table, so as to obtain a second corresponding relationship between the received signal strength and the index value;
a comparison submodule, configured to compare the first corresponding relationship with the second corresponding relationship, and adjust the larger received signal strength value to a final optimal corresponding relationship between the received signal strength and the index value with reference to the index value; and
And the matching submodule is used for matching according to the optimal corresponding relation and the corresponding relation between the index value in the modulation and coding strategy table and the signal transmission rate to obtain the corresponding relation between the second received signal strength and the second signal transmission rate.
6. The wireless communication device of claim 1, wherein the calculation module is further configured to monitor the received signal strengths of the client at the new best access device and the previous best access device and calculate the difference between the received signal strengths of the new best access device and the previous best access device when the client is in a roaming state and a new best access device is detected.
7. The wireless communication device of claim 6, wherein the selection module is further configured to keep the previous best access device for the client to connect when the difference between the received signal strengths of the new best access device and the previous best access device is less than a threshold.
8. The wireless communication device of claim 6, wherein the selection module is further configured to connect the client to the new best access device when the difference between the received signal strengths of the new best access device and the original best access device is not less than a threshold.
9. A method for a wireless communication device to select a best access device, the wireless communication device communicating with other wireless communication devices to provide wireless network services to a client, the method comprising:
Establishing the wireless communication device with the same service set identification and security identification with other wireless communication devices into a wireless network group, wherein the wireless communication device and the other wireless communication devices form an up-down relationship;
Broadcasting wireless network attribute information of the wireless network group to the other wireless communication devices which are on line and off line in the wireless network group and the client;
Calculating first transmission time required by the wireless communication equipment for transmitting the wireless network attribute information to other online wireless communication equipment, and calculating second transmission time required by the wireless communication equipment for transmitting the wireless network attribute information to the client, wherein the wireless network attribute information comprises the service set identifier, the security identifier and the number of serial streams;
Calculating the first transmission time according to a first cycle transmission time and a first cycle signal transmission rate, wherein the first transmission time is equal to the first cycle transmission time divided by the first cycle signal transmission rate, the first cycle transmission time is one round trip transmission time required for transmitting the wireless network attribute information between the wireless communication device and the other wireless communication devices on line, the first cycle signal transmission rate is equal to a single signal transmission rate multiplied by the number of the serial streams, and the single signal transmission rate is the signal transmission rate for transmitting the wireless network attribute information to the other wireless communication devices on line by the wireless communication device;
Receiving wireless access equipment selection request information of the client, and selecting the best wireless access equipment according to the first transmission time and the second transmission time; and
Selecting the best wireless access device according to the minimum value of the sum of the first transmission time and the second transmission time.
10. The method of claim 9, wherein the method of calculating the second transmission time comprises:
And calculating the second transmission time according to a second cycle transmission time and a second signal transmission rate, wherein the second transmission time is equal to the second cycle transmission time divided by the second signal transmission rate.
11. The method of claim 10, wherein a second round trip transmission time is a one time round trip transmission time required for transmitting the wireless network property information between the wireless communication device and the client.
12. The method of claim 11, wherein a second received signal strength of the ue is monitored, and the second signal transmission rate is calculated according to a correspondence between the second received signal strength and the second signal transmission rate.
13. The method of claim 12, wherein the method of matching the second received signal strength to second signal transmission rate correspondence comprises:
Establishing a first corresponding relation between the default received signal strength of the client and an index value in a modulation and coding strategy table;
when the client is connected with the wireless communication equipment, monitoring the received signal strength and the corresponding signal transmission rate of the client in a set period, obtaining different signal transmission rates with the same received signal strength, calculating the average value of the different signal transmission rates, and finding out the index value corresponding to the average value in a modulation and coding strategy table, thereby obtaining a second corresponding relation between the received signal strength and the index value;
Comparing the first corresponding relation with the second corresponding relation, taking the index value as a reference, and adjusting the larger received signal strength value into the optimal corresponding relation between the final received signal strength and the index value; and
And matching the optimal corresponding relation with the corresponding relation between the index value in the modulation and coding strategy table and the signal transmission rate to obtain the corresponding relation between the second received signal strength and the second signal transmission rate.
14. The method of claim 9, wherein when the client is in a roaming state and a new best access device is detected, the received signal strengths of the client at the new best access device and an original best access device are monitored, and a difference between the received signal strengths of the new best access device and the original best access device is calculated.
15. The method of claim 14, wherein the previous best access device is maintained for the client to connect when the difference between the received signal strengths of the new best access device and the previous best access device is less than a threshold.
16. The method of claim 14, wherein the client is connected to the new best access device when a difference between received signal strengths of the new best access device and the previous best access device is not less than a threshold.
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