CN117336879A - Wireless communication device with transmission policy adjustment mechanism and wireless communication method thereof - Google Patents

Abstract

A wireless communication device with a transmission strategy adjustment mechanism includes: a receiving circuit, a detection circuit, a statistical circuit, a decision-making circuit and a transmission circuit. The receiving circuit receives communication activities between external devices. The detection circuit detects multiple inter-frame intervals corresponding to the communication behavior, and records the relevant time length and a set of communication parameters. The statistical circuit performs statistics on inter-frame intervals according to multiple time intervals to generate multiple inter-frame interval statistical data. The decision-making circuit analyzes at least one of the relevant time length of the inter-frame interval, the set of communication parameters and the inter-frame interval statistical data according to at least one application requirement to generate a transmission parameter adjustment signal. The transmission circuit receives the transmission parameter adjustment signal to adjust a plurality of transmission parameters of the transmission circuit related to the inter-frame interval length to perform data transmission.

Description

Wireless communication device with transmission strategy adjustment mechanism and wireless communication method thereof

Technical field

The present invention relates to communication technology, and in particular to a wireless communication device with a transmission strategy adjustment mechanism and a wireless communication method thereof.

Background technique

Since wireless network communication does not require physical wired transmission wires, it has greater flexibility in network layout, thus becoming an important technology for network communication. Among them, WiFi wireless network communication technology is one of the most mainstream technologies.

With the development and application of network technology, users have higher and higher requirements for network mobility and reliability. In order to increase the communication performance of different station devices, the access point device (access point; AP) often needs to evaluate and adjust parameters such as enhanced distributed channel access (EDCA). Application priority levels are programmed to avoid different communication behaviors from colliding with each other. However, this method requires interaction between the access point device and the site device to obtain relevant information, and cannot be flexibly adjusted to the needs of individual devices.

Contents of the invention

The wireless communication device of the policy adjustment mechanism includes: a receiving circuit, a detection circuit, a statistical circuit, a decision-making circuit and a transmission circuit. The receiving circuit is configured to receive multiple communication activities between multiple external devices. The detection circuit is configured to detect a plurality of interframe intervals corresponding to the communication behavior and record the relevant time length and a set of communication parameters. The statistics circuit is configured to count inter-frame intervals according to a plurality of time intervals to generate a plurality of inter-frame interval statistical data. The decision-making circuit is configured to analyze at least one of the relevant time length of the inter-frame interval, the plurality of communication parameters, and the inter-frame interval statistical data according to at least one application requirement to generate a transmission parameter adjustment signal. The transmission circuit is configured to receive a transmission parameter adjustment signal to adjust a plurality of transmission parameters of the transmission circuit related to the inter-frame interval length for data transmission.

The invention also includes a wireless communication method with a transmission strategy adjustment mechanism, which is applied to a wireless communication device and includes: making the receiving circuit receive multiple communication behaviors between multiple external devices; making the detection circuit detect multiple communication behaviors corresponding to inter-frame intervals, and record the relevant time length and a set of communication parameters; enable the statistical circuit to count inter-frame intervals according to multiple time intervals to generate multiple inter-frame interval statistical data; enable the decision-making circuit to perform statistics on inter-frame intervals based on at least one application requirement. analyzing at least one of the relevant time length of the inter-frame interval, the set of communication parameters and the inter-frame interval statistical data to generate a transmission parameter adjustment signal; and causing the transmission circuit to receive the transmission parameter adjustment signal to adjust the transmission circuit and the inter-frame interval Multiple transmission parameters related to the length are used for data transmission.

Regarding the features, operations and effects of the present invention, the preferred embodiments will be described in detail below with reference to the accompanying drawings.

Description of drawings

Figure 1 shows a block diagram of a wireless communication device with a transmission policy adjustment mechanism according to an embodiment of the present invention;

FIG. 2 shows a schematic diagram of communication behaviors of multiple external devices detected by a wireless communication device according to an embodiment of the present invention; and

Figure 3 shows a flow chart of a wireless communication method with a transmission policy adjustment mechanism in an embodiment of the present invention.

Symbol Description

100: Wireless communication device

110: Receiving circuit

120: Detection circuit

130: Statistical circuit

140: Decision circuit

150: Transmission circuit

300: Wireless communication method

S310～S350: steps

BA: block confirmation section

CB: communication behavior

CH1, CH2: wireless channel

CP: communication parameters

DA: data transfer

FRA0～FRA4: frame section

IFS0～IFS4: inter-frame interval

ISS: Interframe interval statistics

PS: Transmit parameter adjustment signal

SIFS: short frame segment

TL: Relevant time length

Detailed ways

An object of the present invention is to provide a wireless communication device and a wireless communication method with a transmission strategy adjustment mechanism, so as to adjust the transmission parameter adjustment signal of the transmission circuit by analyzing and counting the inter-frame intervals of the external device to improve the performance of the transmission circuit. Transmission performance of transmission circuits.

Please refer to Figure 1. FIG. 1 shows a block diagram of a wireless communication device 100 with a transmission policy adjustment mechanism in one embodiment of the present invention. Wireless communication device 100 may be an access point device or a station device.

The wireless communication device 100 includes: a receiving circuit 110, a detection circuit 120, a statistical circuit 130, a decision circuit 140 and a transmitting circuit 150.

The receiving circuit 110 is configured to receive a plurality of communication behaviors CB between a plurality of external devices. The detection circuit 120 is configured to detect multiple inter frame spaces (IFS) corresponding to the communication behavior CB, and record the relevant time length TL and a set of communication parameters CP.

Please also refer to Figure 2. FIG. 2 shows a schematic diagram of communication behaviors CB of multiple external devices detected by the wireless communication device 100 in one embodiment of the present invention.

FIG. 2 exemplarily illustrates the communication behavior CB performed by the external device in the wireless channels CH1 and CH2. Among them, communication behavior CB mainly includes frame segments used to transmit data packets and inter-frame intervals between different frame segments.

In one embodiment, the correlation time length TL includes the inter-frame interval time length and the frame segment time length.

In the example shown in Figure 2, the corresponding wireless channel CH1 shows the inter-frame interval IFS0, the frame segment FRA0, the inter-frame interval IFS1 and the frame segment FRA1 in sequence, and the corresponding time lengths are 73, 2874, and 143 respectively. and 1369 microseconds (μs). In one embodiment, each inter-frame space includes, for example, but not limited to, a backoff time (backoff time), a contention window (contention window), an arbitration inter-frame space (AIFS), or a section of a combination thereof (not limited to shown in the figure).

The example shown in Figure 2 shows the interframe interval IFS2, the frame segment FRA2, the interframe interval IFS3, the frame segment FRA3, the interframe interval IFS4 and the frame segment FRA4 in sequence corresponding to the wireless channel CH2, and the corresponding time The lengths are 128, 771, 213, 674, 173 and 1874 microseconds respectively.

In one embodiment, the wireless channels CH1 and CH2 may further include: between the frame section FRA0 and the inter-frame interval IFS1, between the frame section FRA2 and the inter-frame interval IFS3 as shown in Figure 2; The short frame segment SIFS and the block acknowledgment (block acknowledgment) segment BA between the segment FRA3 and the inter-frame space IFS4, or optionally include a centralized coordination function (point coordination function; PCF) frame segment not shown part. These sections do not belong to the sections that need to be detected and recorded by the detection circuit 120 .

In one embodiment, the communication parameter CP is related to the corresponding frame segment after the inter-frame interval, and includes, for example, but not limited to, access point group identification information, station identification information, frame characteristics ( frame attribute) information, channel information, or a combination thereof.

In one embodiment, the access point group identification information is a basic service set identifier (BSSID), which represents a group under an access point to which the station device that performs the inter-frame spacing belongs. The station identification information is a media access control (MAC) address, which represents the identification information of the station device corresponding to the inter-frame spacing.

The frame characteristic information includes frame type, frame subtype, transmission identifier (traffic identifier; TID) or a combination thereof. For example, the transmission identification code indicates the importance of the content of this frame, and the value from high to low can correspond to the audio category with the highest priority (for example, the value is 7 and 6), the image category (for example, the value is 5 and 4), Best effort category (for example, values are 3 and 2) and background category (for example, values are 1 and 0). In addition, the channel information is spectrum location.

It should be noted that the individual parameters included in the above communication parameter CP and the content contained in each parameter are only examples.

In the example shown in FIG. 2 , the frame segment FRA0 corresponds to a basic service set identifier with a value of 1, a media access control address with a value of 2, a transport identifier with a value of 6, and a channel with a value of 1. Frame segment FRA1 corresponds to a basic service set identifier with a value of 1, a media access control address with a value of 1, a transport identifier with a value of 0, and a channel with a value of 1.

Frame segment FRA2 corresponds to a basic service set identifier with a value of 0, a media access control address with a value of 0, a transport identifier with a value of 6, and a channel with a value of 2. Frame segment FRA3 corresponds to a Basic Service Set Identifier with a value of 0, a Media Access Control Address with a value of 0, a Transport Identifier with a value of 0, and a channel with a value of 2. Frame segment FRA4 corresponds to a Basic Service Set Identifier with a value of 0, a Media Access Control Address with a value of 0, a Transport Identifier with a value of 0, and a channel with a value of 2.

Each inter-frame interval will record the inter-frame interval time length and frame segment time length by (IL, FL), and will be recorded in the form of (BSSID, MACADD, TID, CH) including the basic service set identifier, media access control address, transmission The communication parameter CP of the channel corresponding to the identifier and spectrum position.

Therefore, the interframe interval IFS0 will be recorded by (IL=73, FL=2874) and (BSSID=1, MAC=2, TID=6, CH=1). The interframe space IFS1 will be recorded by (IL=143, FL=1369) and (BSSID=1, MAC=1, TID=0, CH=1). The interframe space IFS2 will be recorded by (IL=128, FL=771) and (BSSID=0, MAC=0, TID=6, CH=2). Interframe space IFS3 will be recorded by (IL=213, FL=674) and (BSSID=0, MAC=0, TID=0, CH=2). The interframe space IFS4 will be recorded by (IL=173, FL=1874) and (BSSID=0, MAC=0, TID=0, CH=2).

The statistics circuit 130 is configured to perform statistics on inter-frame intervals according to multiple time intervals to generate a plurality of inter-frame interval statistical data ISS. The statistics performed by the statistics circuit 130 include, for example but not limited to, cumulative statistics and/or average statistics.

In one embodiment, the statistical circuit 130 can set a time interval every 50 microseconds, in order: 0 to 50 microseconds, 51 to 100 microseconds, 101 to 150 microseconds, 151 to 200 microseconds, and 201 to 250 microseconds. Second.

The statistics circuit 130 can perform statistics on the number of occurrences of inter-frame interval time length, the average inter-frame interval time length, and the average time length of subsequent frame sections for each time interval.

Taking the time interval of 201 to 250 microseconds as an example, only the inter-frame interval IFS3 has a time length of 213 microseconds, which falls within this range, and the subsequent frame segment FRA3 has a time length of 674 microseconds. Corresponding to this time interval, the number of time length occurrences is the number of occurrences of inter-frame intervals whose time length falls within this range, and its value is 1. The time length average is the time length average of the inter-frame intervals whose time length falls within this range, and its value is 213 microseconds. The average length of subsequent frames is the average length of the frame sections after the inter-frame interval whose time length falls within this range, and its value is 674 microseconds.

Similarly, in the time interval of 151 to 200 microseconds, only the inter-frame interval IFS4 has a time length of 173 microseconds, which falls within this range, and the subsequent frame segment FRA4 has a time length of 1874 microseconds. Corresponding to this time interval, the value of the number of occurrences of the time length is 1. The average value of the time length is 173 microseconds. The average length of subsequent frames is 1874 microseconds.

In the time interval of 101 to 150 microseconds, the interframe interval time lengths of the interframe interval IFS1 and the interframe interval IFS2 are 143 and 128 microseconds that fall within this range, and their subsequent frame segments FRA1 and frame The time lengths of section FRA2 are 1369 and 771 microseconds respectively. Corresponding to this time interval, the value of the number of occurrences of the time length is 2. The time length average value is 135 microseconds (average of 143 and 128). The average length of subsequent frames is 1070 microseconds (average of 1369 and 771).

In the time interval of 51 to 100 microseconds, only the inter-frame interval IFS0 has a time length of 73 microseconds, which falls within this range, and the subsequent frame segment FRA0 has a time length of 2874 microseconds. Corresponding to this time interval, the value of the number of occurrences of the time length is 1. The average value of the time length is 73 microseconds. The average length of subsequent frames is 2874 microseconds.

In the time interval of 0 to 50 microseconds, no interframe interval has a length that falls within this range. Corresponding to this time interval, the value of the number of occurrences of the time length is 0. The value for time length averaging is 0 microseconds. The average value of subsequent frame lengths is 0 microseconds.

Therefore, the inter-frame interval statistical data ISS includes the number of occurrences of the above-mentioned time length corresponding to each time interval, the average time length, the average time length of subsequent frames, or a combination thereof.

The decision circuit 140 is configured to analyze at least one of the relevant time length TL of the inter-frame interval, the set of communication parameters CP and the inter-frame interval statistical data ISS according to at least one application requirement to generate a transmission parameter adjustment signal PS. In different embodiments, the relevant time length TL of the inter-frame space and the set of communication parameters CP may be included in the inter-frame space statistical data ISS and received from the statistics circuit 130, or directly received from the detection circuit 120.

The transmission circuit 150 is configured to receive the transmission parameter adjustment signal PS to adjust a plurality of transmission parameters of the transmission circuit 150 related to the inter-frame interval length to perform data transmission DA. Transmission parameters include, for example, but are not limited to, backoff time, contention window, arbitration interframe spacing, or combinations thereof. In more detail, since the inter-frame interval may include a back-off time, a contention window, an arbitration inter-frame interval, or a combination thereof, the transmission circuit 150 may adjust the length of at least one of the back-off time, the contention window, and the arbitration inter-frame interval to adjust The length of the interframe space.

In one embodiment, when the wireless communication device 100 is a station device, the application requirements may include station aggressive transmission requirements, so that the decision circuit 140 determines the minimum time length from the inter-frame interval statistical data ISS and adjusts the transmission circuit The transmission parameter 150 causes the inter-frame interval time length of the transmission circuit 150 to transmit data to be less than or equal to the minimum time length.

For example, the decision circuit 140 may search the inter-frame interval statistical data ISS for an inter-frame interval time length with a minimum value as the minimum time length. In another example, the decision-making circuit 140 may search the inter-frame interval statistical data ISS for an inter-frame interval having the same access point group identification information as the wireless communication device 100, and search for an inter-frame interval with the smallest inter-frame interval. The inter-frame interval time length of the value is used as the minimum time length. The transmission circuit 150 further adjusts the transmission parameters so that the inter-frame interval time length of data transmission is less than or equal to the minimum time length.

In one embodiment, when the wireless communication device 100 is a site device, the application requirements may include illegal communication response transmission requirements, so that the decision-making circuit 140 searches for the same access point group as the wireless communication device 100 in the communication behavior CB. Illegal communication behavior of identification information and frame characteristic information, as well as station identification information different from the wireless communication device 100, determines the minimum time length in the corresponding inter-frame interval statistical data ISS, and then adjusts the transmission parameters of the transmission circuit 150 to transmit The inter-frame interval time length for circuit 150 to transmit data is less than or equal to the minimum time length.

In more detail, this illegal communication behavior is performed by an external device that is on the same channel as the wireless communication device 100, performs the same type of data transmission, and is different from the wireless communication device 100, and this illegal communication behavior can be, for example, but not The inter-frame interval is limited to a length less than a preset length threshold. For example, the decision circuit 140 may search for the inter-frame interval time length corresponding to the external device as the minimum time length. The transmission circuit 150 further adjusts the transmission parameters so that the inter-frame interval time length of data transmission is less than or equal to the minimum time length.

In one embodiment, when the wireless communication device 100 is a station device, the application requirement may include an emergency transmission requirement, so that the decision circuit 140 identifies the access point group identification information and frame characteristic information of the communication behavior CB in the emergency transmission requirement. and station identification information to adjust the transmission parameters of the transmission circuit 150 according to the relationship between the urgency of the data to be transmitted and the communication behavior CB.

For example, the decision-making circuit 140 can determine whether the external device performing the communication behavior CB belongs to the same access point device group as the wireless communication device 100 by identifying the above information. For external devices belonging to the group under the same access point device, the decision circuit 140 further determines which one has a higher priority based on the frame characteristic information of the data transmitted by the external device and the data to be transmitted by the wireless communication device 100 . When the priority level of the data to be transmitted by the wireless communication device 100 is higher, the transmission circuit 150 further adjusts the transmission parameters so that the inter-frame interval time length of data transmission is reduced and the data is transmitted preferentially.

In one embodiment, when the wireless communication device 100 is a station device or an access point device, the application requirement includes a channel switching requirement, so that the decision circuit 140 searches the channel information of the communication behavior CB to decide whether to use the transmission circuit based on the channel information. 150 for channel switching.

For example, the decision-making circuit 140 can determine the amount of noise and load of other channels based on the channel information, and then determine whether there is a cleaner, noise-free channel with a lower load that allows the transmission circuit 150 to perform channel switching.

In one embodiment, when the wireless communication device 100 is an access point device, the application requirements include average site resource allocation requirements, so that the decision-making circuit 140 identifies the site identification information and frame characteristic information corresponding to each communication behavior CB to determine the external Whether one of the devices occupies channel resources exceeding the threshold value, and then allocates resources to the external device.

For example, after identifying the station identification information and frame characteristic information corresponding to each communication behavior CB, the decision-making circuit 140 can determine that some communication behaviors CB have a smaller inter-frame interval length for a long period of time. Behavioral CB occupies channel resources that exceed the threshold. The decision-making circuit 140 can selectively adjust the inter-frame interval time length of these communication behaviors CB in an average or default ratio manner to achieve the purpose of resource allocation.

Therefore, the wireless communication device of the present invention can adjust the transmission parameter adjustment signal of the transmission circuit by analyzing and counting the inter-frame intervals of the external device, so as to improve the transmission performance of the transmission circuit.

Figure 3 shows a flow chart of a wireless communication method 300 with a transmission policy adjustment mechanism in one embodiment of the present invention.

In addition to the aforementioned devices, the present invention also discloses a wireless communication method 300, which can be applied to, for example, but not limited to, the wireless communication device 100 in FIG. 1 . An embodiment of the wireless communication method 300 is shown in Figure 3 and includes the following steps.

In step S310, the receiving circuit 100 is caused to receive multiple communication behaviors CB between multiple external devices.

In step S320, the detection circuit 120 is caused to detect multiple inter-frame intervals corresponding to the communication behavior CB, and record the relevant time length TL and a set of communication parameters CP.

In step S330, the statistics circuit 130 is caused to perform statistics on inter-frame intervals according to multiple time intervals to generate a plurality of inter-frame interval statistical data ISS.

In step S340, the decision circuit 140 is caused to analyze at least one of the relevant time length TL of the inter-frame interval, the set of communication parameters CP and the inter-frame interval statistical data ISS according to at least one application requirement to generate a transmission parameter adjustment signal PS. .

In step S350, the transmission circuit 150 is caused to receive the transmission parameter adjustment signal PS to adjust a plurality of transmission parameters of the transmission circuit 150 related to the inter-frame interval length to perform data transmission DA.

It should be noted that the above-described implementation is only an example. In other embodiments, those of ordinary skill in the art can make changes without departing from the spirit of the invention.

Based on the above, the wireless communication device and the wireless communication method thereof with a transmission strategy adjustment mechanism in the present invention can adjust the transmission parameter adjustment signal of the transmission circuit by analyzing and counting the inter-frame intervals of the external device, so as to improve the transmission of the transmission circuit. efficacy.

Although the preferred and feasible embodiments of the present invention have been disclosed above, these embodiments are not intended to limit the present invention. Those of ordinary skill in the art can implement the technical features of the present invention based on the explicit or implicit contents of the present invention. All such changes are within the scope of patent protection sought by the present invention. In other words, the scope of patent protection of the present invention shall be subject to the scope defined by the claims of this application.

Claims (10)

1. A wireless communication apparatus having a transmission policy adjustment mechanism, the wireless communication apparatus comprising:

a receiving circuit configured to receive a plurality of communication behaviors between a plurality of external devices;

the detection circuit is configured to detect a plurality of inter-frame intervals corresponding to the plurality of communication behaviors and record the related time length and a group of communication parameters;

a statistics circuit configured to count the plurality of inter-frame intervals according to a plurality of time intervals to generate a plurality of inter-frame interval statistics data;

a decision circuit configured to analyze at least one of the correlation time lengths of the plurality of inter-frame intervals, the set of communication parameters, and the plurality of inter-frame interval statistics to generate a transmission parameter adjustment signal according to at least one application requirement; and

and the transmission circuit is configured to receive the transmission parameter adjustment signal and adjust a plurality of transmission parameters related to the interval length of the transmission circuit and the frame to transmit data.

2. The wireless communications apparatus of claim 1, wherein the set of communication parameters includes access point group identification information, station identification information, frame characteristic information, channel information, or a combination thereof.

3. The wireless communications apparatus of claim 1, wherein the correlation time length comprises an inter-frame interval time length and a subsequent frame segment time length, the plurality of inter-frame interval statistics comprise a number of inter-frame interval time length occurrences, an inter-frame interval time length average, a subsequent frame segment time length average, or a combination thereof for the plurality of inter-frame intervals over each of the plurality of time intervals.

4. The wireless communications apparatus of claim 1, wherein the at least one application requirement comprises a station active transmission requirement such that the decision circuit determines a minimum time length from the plurality of inter-frame space statistics and adjusts the plurality of transmission parameters of the transmission circuit such that an inter-frame space time length for data transmission by the transmission circuit is less than or equal to the minimum time length.

5. The wireless communication device of claim 1, wherein the at least one application requirement includes an illegal communication handling transmission requirement such that the decision circuit searches for illegal communication behaviors among the plurality of communication behaviors that have the same access point group identification information and frame characteristic information as the wireless communication device and different station identification information from the wireless communication device to decide a minimum time length among the corresponding plurality of inter-frame interval statistics, and adjusts the plurality of transmission parameters of the transmission circuit such that the inter-frame interval time length of data transmission by the transmission circuit is less than or equal to the minimum time length.

6. The wireless communications apparatus of claim 1, wherein the at least one application requirement comprises an emergency transmission requirement such that the decision circuit identifies access point group identification information, frame characteristic information, and station identification information for the plurality of communication behaviors to adjust the plurality of transmission parameters of the transmission circuit based on a relationship between the plurality of communication behaviors and an emergency level of data to be transmitted.

7. The wireless communications apparatus of claim 1, wherein the at least one application requirement includes a channel switch requirement to cause the decision circuit to search channel information for the plurality of communication actions to determine whether to cause the transmit circuit to switch channels based on the channel information.

8. The wireless communications apparatus of claim 1, wherein the at least one application requirement includes an average station resource allocation requirement such that the decision circuit identifies station identification information and frame characteristic information corresponding to each of the plurality of communication actions to determine whether one of the plurality of external apparatuses occupies channel resources exceeding a threshold for resource allocation to the plurality of external apparatuses.

9. The wireless communication device of claim 1, wherein the wireless communication device is an access point device or a station device.

10. A wireless communication method with a transmission policy adjustment mechanism, applied to a wireless communication device, the wireless communication method comprising:

causing the receiving circuit to receive a plurality of communication behaviors between a plurality of external devices;

the detection circuit is enabled to detect a plurality of inter-frame intervals corresponding to the plurality of communication behaviors, and relevant time length and a group of communication parameters are recorded;

making a statistics circuit to count the inter-frame intervals according to the time intervals so as to generate inter-frame interval statistics data;

causing a decision circuit to analyze at least one of the correlation time lengths of the plurality of inter-frame intervals, the set of communication parameters, and the plurality of inter-frame interval statistics to generate a transmission parameter adjustment signal according to at least one application requirement; and

and enabling a transmission circuit to receive the transmission parameter adjustment signal so as to adjust a plurality of transmission parameters related to the interval length of the transmission circuit and the frame to carry out data transmission.