CN110572832B - Method and system for inhibiting same-frequency interference communication based on access point - Google Patents
Method and system for inhibiting same-frequency interference communication based on access point Download PDFInfo
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Abstract
The invention discloses a communication method for inhibiting same frequency interference based on an access point, which comprises the following steps: collecting, by a wireless communication mobile terminal, information to be transmitted; transmitting, by a wireless communication mobile terminal, a first connection setup request message to a first access point; receiving, by the wireless communication mobile terminal, a connection setup response message; judging, by the wireless communication mobile terminal, whether a congestion indicator is included in the connection setup response message; if the congestion indicator is included in the connection setup response message, re-transmitting, by the wireless communication mobile terminal, the second connection setup request message to the first access point after a length of time; if the congestion indicator is not included in the connection setup response message, the wireless communication mobile terminal judges whether the indicator is included in the connection setup response message; if the indicator for the first connection establishment request message is not included in the connection establishment response message, immediately retransmitting the second connection establishment request message to the first access point by the wireless communication mobile terminal.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and a system for suppressing co-channel interference communication based on an access point.
Background
In recent years, multimedia services and broadband internet services have been rapidly developed, the number of wireless users has rapidly increased, and the demand of people for wireless data transmission services has been increasing. Due to the limited spectrum resources, how to obtain higher spectrum utilization rate under the limited spectrum resources makes the wireless communication system with better reliability and higher capacity become a hot spot of the research in the field of wireless communication in the future. The ap (wireless Access point) can improve the reliability of the wireless communication system. Although a wireless local area network in a point-to-point mode can be formed by using only a wireless network card, the reliability of the wireless local area network is poor, and the wireless local area network is only suitable for temporary wireless connection. After the AP is installed, the safety of the wireless network can be greatly improved, and permanent wireless connection service can be obtained. In general terms, a wireless AP is a bridge connecting between a wireless network and a wired network. The AP can increase the capacity of the wireless communication system. With the development of communication technology and the rapid increase of the number of users, the communication environment becomes more and more complex, and the traditional point-to-point wireless communication system is gradually replaced by a multi-user multi-antenna system. Co-channel interference among multiple users, however, severely limits the capacity of a wireless communication system. The reasonable AP construction scheme can improve the capacity of the communication system. Taking a cellular cell as an example, with the development of mobile internet, the mobile communication traffic is also rapidly increased, but due to the limitation of spectrum resources, in order to improve the transmission capacity of a cellular system, the radius of the cell is smaller and smaller, and the interference between adjacent cells is also more and more serious. In addition, with the deep research of micro cells, pico cells, home base stations, relays and other technologies, more complex intra-cell interference will be faced in future cellular communication systems.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a method and a system for inhibiting same frequency interference communication based on an access point, which can overcome the defects of the prior art.
In order to achieve the above object, the present invention provides a communication method for suppressing co-channel interference based on an access point, which comprises the following steps: collecting, by a wireless communication mobile terminal, information to be transmitted; transmitting, by a wireless communication mobile terminal, a first connection setup request message to a first access point, wherein the first connection setup request message includes at least an indicator for the first connection setup request message, wherein a distance between the first access point and other access points is at least 30 meters, and wherein neighboring access points operate on different center frequencies; receiving, by the wireless communication mobile terminal, a connection setup response message, wherein the connection setup response message is transmitted by the first access point in response to receiving the connection setup request message; judging whether the connection establishment response message comprises a congestion indicator or not by the wireless communication mobile terminal, wherein the congestion indicator comprises a backoff parameter; if the congestion indicator is included in the connection establishment response message, re-transmitting, by the wireless communication mobile terminal, a second connection establishment request message to the first access point after the time length, wherein the second connection establishment request message includes at least the indicator for the second connection establishment request message; if the congestion indicator is not included in the connection setup response message, determining, by the wireless communication mobile terminal, whether the congestion indicator is included in the connection setup response message; if the indicator for the first connection establishment request message is not included in the connection establishment response message, immediately retransmitting, by the wireless communication mobile terminal, the second connection establishment request message to the first access point; and transmitting, by the wireless communicating mobile terminal, a contention resolution message to the first access point if the indicator for the first connection setup request message is included in the connection setup response message, wherein the contention resolution message includes an identity identifier specific to the wireless communicating mobile terminal, and wherein different wireless communicating mobile terminals have different identity identifiers.
In a preferred embodiment, the method for suppressing co-channel interference based on access point further includes the following steps: receiving, by the wireless communication mobile terminal, a contention resolution response message, wherein the contention resolution response message is transmitted by the first access point in response to receiving the contention resolution message, and wherein the contention resolution response message includes an identity identifier specific to the wireless communication mobile terminal; determining, by the wireless communication mobile terminal, whether the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is the wireless communication mobile terminal-specific identity identifier included in the contention resolution message; if the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is the wireless communication mobile terminal-specific identity identifier included in the contention resolution message, transmitting, by the wireless communication mobile terminal, information to be transmitted to the first access point.
In a preferred embodiment, the method for suppressing co-channel interference communication based on the access point further includes the following steps: the wireless communication mobile terminal does not transmit the information to be transmitted to the first access point if the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is not the wireless communication mobile terminal-specific identity identifier included in the contention resolution message.
In a preferred embodiment, the first access point determines whether a congestion indicator is included in the connection setup response message based on: determining the number of connection establishment request messages received in a given length of time; judging whether the access point can bear the wireless communication mobile terminals of the quantity and simultaneously send the information to be sent; if the access point can bear the weight of the wireless communication mobile terminals and simultaneously send the information to be sent, determining that the congestion indicator is not included in the connection establishment response message; and if the access point cannot bear the quantity of the wireless communication mobile terminals to simultaneously send the information to be sent, determining that the congestion indicator is included in the connection establishment response message.
In a preferred embodiment, the time length is determined by the wireless communication mobile terminal based on the following steps: decoding, by the wireless communication mobile terminal, the congestion indicator to obtain a backoff parameter; determining a maximum value of the length of time based on a backoff parameter included in the obtained congestion indicator; a time length is randomly selected, wherein the time length is less than a maximum value of the time length. The invention also provides a system for inhibiting same frequency interference based on the access point, which comprises: means for collecting information to be transmitted by a wireless communication mobile terminal; means for transmitting, by a wireless communication mobile terminal, a first connection setup request message to a first access point, wherein the first connection setup request message includes at least an indicator for the first connection setup request message, wherein a distance between the first access point and other access points is at least 30 meters, and wherein neighboring access points operate on different center frequencies; means for receiving, by a wireless communication mobile terminal, a connection setup response message, wherein the connection setup response message is transmitted by a first access point in response to receiving a connection setup request message; means for determining, by the wireless communication mobile terminal, whether a congestion indicator is included in the connection setup response message, wherein the congestion indicator includes a backoff parameter; means for retransmitting, by the wireless communication mobile terminal, a second connection establishment request message to the first access point after a time period if the congestion indicator is included in the connection establishment response message, wherein the second connection establishment request message includes at least an indicator for the second connection establishment request message; means for determining, by the wireless communication mobile terminal, whether the congestion indicator is included in the connection setup response message if the congestion indicator is not included in the connection setup response message; means for immediately retransmitting, by the wireless communication mobile terminal, the second connection setup request message to the first access point if the indicator for the first connection setup request message is not included in the connection setup response message; and means for transmitting, by the wireless communications mobile terminal, a contention resolution message to the first access point if the indicator for the first connection setup request message is included in the connection setup response message, wherein the contention resolution message includes an identity identifier specific to the wireless communications mobile terminal, and wherein different wireless communications mobile terminals have different identity identifiers.
In a preferred embodiment, an access point based co-channel interference suppression system comprises: means for receiving, by a wireless communication mobile terminal, a contention resolution response message, wherein the contention resolution response message is transmitted by a first access point in response to receiving the contention resolution message, and wherein an identity identifier specific to the wireless communication mobile terminal is included in the contention resolution response message; means for determining, by the wireless communication mobile terminal, whether the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is a wireless communication mobile terminal-specific identity identifier included in the contention resolution message; means for transmitting, by the wireless communication mobile terminal, information to be transmitted to the first access point if the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is the wireless communication mobile terminal-specific identity identifier included in the contention resolution message.
In a preferred embodiment, an access point-based co-channel interference suppression system comprises: means for transmitting the information to the first access point if the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is not the wireless communication mobile terminal-specific identity identifier included in the contention resolution message.
In a preferred embodiment, the first access point determines whether a congestion indicator is included in the connection setup response message based on: determining the number of connection establishment request messages received in a given length of time; judging whether the access point can bear the wireless communication mobile terminals of the quantity and simultaneously send the information to be sent; if the access point can bear the weight of the wireless communication mobile terminals and simultaneously send the information to be sent, determining that the congestion indicator is not included in the connection establishment response message; and if the access point can not bear the information to be sent by the wireless communication mobile terminals in quantity, determining that the congestion indicator is included in the connection establishment response message.
In a preferred embodiment, the time length is determined by the wireless communication mobile terminal based on the following steps: decoding, by the wireless communication mobile terminal, the congestion indicator to obtain a backoff parameter; determining a maximum value of the length of time based on a backoff parameter included in the obtained congestion indicator; a length of time is randomly selected, wherein the length of time is less than a maximum value of the length of time. Compared with the prior art, the invention has the following advantages: the invention designs an AP access method, which is a contention-based AP access method and is more beneficial to the access of a mobile terminal to the AP in a multi-user environment. The invention can reuse the same wireless spectrum resource and improve the capacity of the wireless communication system. This effect is particularly evident in public, non-access-restricted situations. Since there is no overlap between different AP channels. By optimizing the AP channel arrangement, a user data will only be transmitted through one AP node within one small cell. The occupation of frequency resources is reduced, and the capacity of a wireless communication system is improved. And the construction cost is saved. The unplanned random AP construction mode is changed, the number of AP nodes can be reduced under the same transmission quality, the initial construction cost is saved, and the later-stage operation cost is also reduced.
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Fig. 1 is a flowchart of a co-channel interference suppression communication method based on an access point according to an embodiment of the present invention.
Fig. 2 is an example of a bar-shaped zone construction method according to an embodiment of the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Fig. 1 is a flowchart of a co-channel interference suppression communication method based on an access point according to an embodiment of the present invention. As shown in the figure, the method for inhibiting co-channel interference communication based on the access point comprises the following steps:
step 101: collecting, by a wireless communication mobile terminal, information to be transmitted;
step 102: transmitting, by a wireless communication mobile terminal, a first connection setup request message to a first access point, wherein the first connection setup request message includes at least an indicator for the first connection setup request message, wherein a distance between the first access point and other access points is at least 30 meters, and wherein neighboring access points operate on different center frequencies;
step 103: receiving, by the wireless communication mobile terminal, a connection setup response message, wherein the connection setup response message is transmitted by the first access point in response to receiving the connection setup request message;
step 104: judging whether the connection establishment response message comprises a congestion indicator or not by the wireless communication mobile terminal, wherein the congestion indicator comprises a backoff parameter;
step 105: if the congestion indicator is included in the connection establishment response message, re-transmitting, by the wireless communication mobile terminal, a second connection establishment request message to the first access point after the time length, wherein the second connection establishment request message includes at least the indicator for the second connection establishment request message;
step 106: if the congestion indicator is not included in the connection setup response message, the wireless communication mobile terminal judges whether the indicator is included in the connection setup response message;
step 107: immediately resending, by the wireless communication mobile terminal, the second connection setup request message to the first access point if the indicator for the first connection setup request message is not included in the connection setup response message; and
step 108: transmitting, by the wireless communicating mobile terminal, a contention resolution message to the first access point if the indicator for the first connection setup request message is included in the connection setup response message, wherein the contention resolution message includes an identity identifier specific to the wireless communicating mobile terminal, and wherein different wireless communicating mobile terminals have different identity identifiers.
In a preferred embodiment, the method for suppressing co-channel interference based on access point further includes the following steps: receiving, by the wireless communication mobile terminal, a contention resolution response message, wherein the contention resolution response message is transmitted by the first access point in response to receiving the contention resolution message, and wherein the contention resolution response message includes an identity identifier specific to the wireless communication mobile terminal; determining, by the wireless communication mobile terminal, whether the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is the wireless communication mobile terminal-specific identity identifier included in the contention resolution message; transmitting, by the wireless communication mobile terminal, information to be transmitted to the first access point if the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is the wireless communication mobile terminal-specific identity identifier included in the contention resolution message.
In a preferred embodiment, the method for suppressing co-channel interference based on access point further includes the following steps: the wireless communication mobile terminal does not transmit the information to be transmitted to the first access point if the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is not the wireless communication mobile terminal-specific identity identifier included in the contention resolution message.
In a preferred embodiment, the first access point determines whether a congestion indicator is included in the connection setup response message based on: determining the number of connection establishment request messages received in a given length of time; judging whether the access point can bear the wireless communication mobile terminals of the quantity and simultaneously send the information to be sent; if the access point can bear the weight of the wireless communication mobile terminals and simultaneously send the information to be sent, determining that the congestion indicator is not included in the connection establishment response message; and if the access point cannot bear the quantity of the wireless communication mobile terminals to simultaneously send the information to be sent, determining that the congestion indicator is included in the connection establishment response message.
In a preferred embodiment, the time length is determined by the wireless communication mobile terminal based on the following steps: decoding, by the wireless communication mobile terminal, the congestion indicator to obtain a backoff parameter; determining a maximum value of the length of time based on a backoff parameter included in the obtained congestion indicator; a length of time is randomly selected, wherein the length of time is less than a maximum value of the length of time. The invention also provides a system for inhibiting same frequency interference based on the access point, which comprises: means for collecting information to be transmitted by a wireless communication mobile terminal; means for transmitting, by a wireless communication mobile terminal, a first connection setup request message to a first access point, wherein the first connection setup request message includes at least an indicator for the first connection setup request message, wherein a distance between the first access point and other access points is at least 30 meters, and wherein neighboring access points operate on different center frequencies; means for receiving, by a wireless communication mobile terminal, a connection setup response message, wherein the connection setup response message is transmitted by a first access point in response to receiving a connection setup request message; means for determining, by the wireless communication mobile terminal, whether a congestion indicator is included in the connection setup response message, wherein the congestion indicator includes a backoff parameter; means for retransmitting, by the wireless communication mobile terminal, a second connection establishment request message to the first access point after a time period if the congestion indicator is included in the connection establishment response message, wherein the second connection establishment request message includes at least an indicator for the second connection establishment request message; means for determining, by the wireless communication mobile terminal, whether the congestion indicator is included in the connection setup response message if the congestion indicator is not included in the connection setup response message; means for immediately retransmitting, by the wireless communication mobile terminal, the second connection setup request message to the first access point if the indicator for the first connection setup request message is not included in the connection setup response message; and means for transmitting, by the wireless communications mobile terminal, a contention resolution message to the first access point if the indicator for the first connection setup request message is included in the connection setup response message, wherein the contention resolution message includes an identity identifier specific to the wireless communications mobile terminal, and wherein different wireless communications mobile terminals have different identity identifiers.
In a preferred embodiment, an access point-based co-channel interference suppression system comprises: means for receiving, by a wireless communication mobile terminal, a contention resolution response message, wherein the contention resolution response message is transmitted by a first access point in response to receiving the contention resolution message, and wherein an identity identifier specific to the wireless communication mobile terminal is included in the contention resolution response message; means for determining, by the wireless communication mobile terminal, whether the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is a wireless communication mobile terminal-specific identity identifier included in the contention resolution message; means for transmitting, by the wireless communication mobile terminal, information to be transmitted to the first access point if the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is the wireless communication mobile terminal-specific identity identifier included in the contention resolution message.
In a preferred embodiment, an access point-based co-channel interference suppression system comprises: means for transmitting the information to the first access point if the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is not the wireless communication mobile terminal-specific identity identifier included in the contention resolution message.
In a preferred embodiment, the first access point determines whether a congestion indicator is included in the connection setup response message based on: determining the number of connection establishment request messages received in a given length of time; judging whether the access point can bear the wireless communication mobile terminals of the quantity and simultaneously send the information to be sent; if the access point can bear the weight of the wireless communication mobile terminals and simultaneously send the information to be sent, determining that the congestion indicator is not included in the connection establishment response message; and if the access point cannot bear the quantity of the wireless communication mobile terminals to simultaneously send the information to be sent, determining that the congestion indicator is included in the connection establishment response message.
In a preferred embodiment, the time length is determined by the wireless communication mobile terminal based on the following steps: decoding, by the wireless communication mobile terminal, the congestion indicator to obtain a backoff parameter; determining a maximum value of the length of time based on a backoff parameter included in the obtained congestion indicator; a length of time is randomly selected, wherein the length of time is less than a maximum value of the length of time. Fig. 2 is an example of a bar-shaped zone construction method according to an embodiment of the present invention. Wherein, the circle in the figure represents the AP installed in the area, wherein the number represents the channel number, and the corresponding relation of the channel number and the working frequency is as the following table.
TABLE 1 center frequency and Range of channels
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (2)
1. A communication method for inhibiting co-channel interference based on an access point is characterized in that:
the method for inhibiting same-frequency interference communication based on the access point comprises the following steps:
collecting, by a wireless communication mobile terminal, information to be transmitted;
transmitting, by the wireless communication mobile terminal, a first connection setup request message to a first access point, wherein the first connection setup request message includes at least an indicator for the first connection setup request message, wherein a distance between the first access point and other access points is at least 30 meters, and wherein neighboring access points operate on different center frequencies;
receiving, by the wireless communication mobile terminal, a connection setup response message, wherein the connection setup response message is transmitted by the first access point in response to receiving the connection setup request message;
judging whether the connection establishment response message comprises a congestion indicator or not by the wireless communication mobile terminal, wherein the congestion indicator comprises a backoff parameter;
retransmitting, by the wireless communication mobile terminal, a second connection establishment request message to the first access point after a length of time if a congestion indicator is included in the connection establishment response message, wherein the second connection establishment request message includes at least an indicator for the second connection establishment request message;
if the congestion indicator is not included in the connection establishment response message, the wireless communication mobile terminal judges whether the congestion indicator is included in the connection establishment response message;
immediately resending, by the wireless communication mobile terminal, a second connection establishment request message to the first access point if the indicator for the first connection establishment request message is not included in the connection establishment response message; and
transmitting, by the wireless communicating mobile terminal, a contention resolution message to the first access point if the indicator for the first connection setup request message is included in the connection setup response message, wherein an identity identifier specific to the wireless communicating mobile terminal is included in the contention resolution message, and wherein different wireless communicating mobile terminals have different identity identifiers,
receiving, by the wireless communication mobile terminal, a contention resolution response message, wherein the contention resolution response message is transmitted by the first access point in response to receiving the contention resolution message, and wherein the contention resolution response message includes an identity identifier specific to the wireless communication mobile terminal;
determining, by the wireless communication mobile terminal, whether the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is a wireless communication mobile terminal-specific identity identifier included in the contention resolution message;
transmitting, by the wireless communication mobile terminal, information to be transmitted to the first access point if the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is the wireless communication mobile terminal-specific identity identifier included in the contention resolution message,
if the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is not the wireless communication mobile terminal-specific identity identifier included in the contention resolution message, the wireless communication mobile terminal does not transmit information to be transmitted to the first access point,
the first access point determines whether a congestion indicator is included in the connection setup response message based on:
determining the number of connection establishment request messages received in a given length of time;
judging whether the access point can bear the wireless communication mobile terminals of the number and simultaneously send information to be sent;
if the access point can bear the information to be sent by the wireless communication mobile terminals of the number at the same time, determining that the congestion indicator is not included in the connection establishment response message;
if the access point can not bear the information to be sent by the wireless communication mobile terminals of the number simultaneously, the connection establishment response message is determined to comprise a congestion indicator, and the time length is determined by the wireless communication mobile terminals based on the following steps:
decoding, by the wireless communication mobile terminal, a congestion indicator to obtain a backoff parameter;
determining a maximum value of the length of time based on a backoff parameter included in the obtained congestion indicator;
randomly selecting a length of time, wherein the length of time is less than a maximum value of the length of time.
2. An access point-based co-channel interference suppression system is characterized in that:
the system for suppressing co-channel interference based on the access point comprises:
means for collecting information to be transmitted by a wireless communication mobile terminal;
means for transmitting, by the wireless communication mobile terminal, a first connection setup request message to a first access point, wherein the first connection setup request message includes at least an indicator for the first connection setup request message, wherein a distance between the first access point and other access points is at least 30 meters, and wherein neighboring access points operate on different center frequencies;
means for receiving, by the wireless communication mobile terminal, a connection setup response message, wherein the connection setup response message is sent by the first access point in response to receiving a connection setup request message;
means for determining, by the wireless communication mobile terminal, whether a congestion indicator is included in the connection setup response message, wherein the congestion indicator includes a backoff parameter;
means for retransmitting, by the wireless communication mobile terminal, a second connection establishment request message to the first access point after a length of time if a congestion indicator is included in the connection establishment response message, wherein the second connection establishment request message includes at least the indicator for the second connection establishment request message;
means for determining, by the wireless communication mobile terminal, if a congestion indicator is not included in the connection setup response message, whether the indicator is included in the connection setup response message;
means for immediately resending, by the wireless communication mobile terminal, a second connection setup request message to the first access point if the indicator for the first connection setup request message is not included in the connection setup response message; and
means for transmitting, by the wireless communicating mobile terminal, a contention resolution message to the first access point if the indicator for the first connection setup request message is included in the connection setup response message, wherein an identity identifier specific to the wireless communicating mobile terminal is included in the contention resolution message, and wherein different wireless communicating mobile terminals have different identity identifiers,
means for receiving, by the wireless communication mobile terminal, a contention resolution response message, wherein the contention resolution response message is transmitted by the first access point in response to receiving the contention resolution message, and wherein the contention resolution response message includes an identity identifier specific to the wireless communication mobile terminal;
means for determining, by the wireless communication mobile terminal, whether the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is a wireless communication mobile terminal-specific identity identifier included in the contention resolution message;
means for transmitting, by the wireless communication mobile terminal, information to be transmitted to the first access point if the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is the wireless communication mobile terminal-specific identity identifier included in the contention resolution message,
means for transmitting, to the first access point, information to be transmitted if the wireless communication mobile terminal-specific identity identifier included in the contention resolution response message is not the wireless communication mobile terminal-specific identity identifier included in the contention resolution message,
the first access point determines whether a congestion indicator is included in the connection setup response message based on:
determining the number of connection establishment request messages received in a given length of time;
judging whether the access point can bear the wireless communication mobile terminals of the number and simultaneously send information to be sent;
if the access point can bear the information to be sent by the wireless communication mobile terminals of the number at the same time, determining that the connection establishment response message does not include a congestion indicator;
if the access point can not bear the information to be sent by the wireless communication mobile terminals of the number simultaneously, the connection establishment response message is determined to comprise a congestion indicator, and the time length is determined by the wireless communication mobile terminals based on the following steps:
decoding, by the wireless communication mobile terminal, a congestion indicator to obtain a backoff parameter;
determining a maximum value of the length of time based on a backoff parameter included in the obtained congestion indicator;
randomly selecting a length of time, wherein the length of time is less than a maximum value of the length of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910864203.8A CN110572832B (en) | 2019-09-12 | 2019-09-12 | Method and system for inhibiting same-frequency interference communication based on access point |
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