CN117527175A - Anti-interference network transmission method, system and equipment - Google Patents

Abstract

The method provided by the embodiment of the application provides a link layer structure, which is a link layer structure developed based on an IEEE802.11 network protocol, when data communication needs to be carried out between a slave station and a master station in a communication system, and by the structure, interference caused by other communication equipment in the same space with a target communication system can be effectively eliminated, interference of other communication equipment in the same space with the target communication system can be effectively avoided, and data transmission stability of the target communication system is effectively ensured.

Description

Anti-interference network transmission method, system and equipment

Technical Field

The present disclosure relates to the field of communications device management technologies, and in particular, to an anti-interference network transmission method, system, and device.

Background

In the practical application process, along with the development of scientific technology, the IEEE802.11 network protocol contains a plurality of network protocol contents such as a/b/g/n/ac/ad, a complete wireless signal competition protocol based on carrier sense CSMA/CA can be provided for an unlicensed sense frequency band, products of the IEEE802.11 network protocol in mobile terminals such as mobile phones, notebooks and the like become standard, and networking of products by adopting the IEEE802.11 network protocol becomes a living habit of people in places such as hotels, families and coffee houses.

In the IEEE802.11 network protocol, the application for the wireless channel generally adopts a contention mode based on CSMA/CA, and before the WiFi6 protocol, the priority of the master station and the STA in the contention channel is consistent. However, if multiple products interfere with each other in one area or different areas in the same physical space, a large number of management frames and control frames are propagated in the wireless channel, which is easy to cause network congestion. The interference is not very high in daily use data of the data priority, such as browsing web pages and social media information, the influence is not fatal, and a user can select other communication modes to surf the internet, but the reliability requirement of the data backhaul mode is high for network bridge equipment and trunk line wireless backhaul equipment. The existing anti-interference can not meet the data return requirement.

Disclosure of Invention

The present application aims to solve at least one of the above technical drawbacks, and therefore, the present application provides an anti-interference network transmission method, system and device, which can be used to solve the technical drawbacks of the prior art that network data transmission is susceptible to interference.

An anti-interference network transmission method, comprising:

Setting channel occupation information of a management frame of a link layer of a target communication system, wherein the target communication system comprises a master station and at least one slave station;

judging whether each communication device in the same space as the target communication system receives a management frame sent by a master station in the target communication system for the first time;

if it is determined that there are first target communication devices that receive a management frame sent by a master station of the target communication system in other communication devices in the same space as the target communication system, each first target communication device is caused to parse the received management frame, so as to obtain target information corresponding to the parsed management frame, after it is determined that the target information in the parsed management frame is obtained, each first target communication device is caused to stop sending a wireless signal, and simultaneously, a master station and a slave station of each first target communication device are caused to perform countdown;

after the count-down of the master station and the slave station of each first target communication device is finished, judging whether the master station and the slave station of each first target communication device receive target information in a management frame of the target communication system again;

If the master station and the slave station of each first target communication device do not receive the target information in the management frame of the target communication system again, enabling each first target communication device to develop normal service;

before each first target communication device performs normal service, a master station of the target communication system sends a management frame again as a system frame to start, wherein the management frame sent by the master station of the target communication system carries a target information frame so as to occupy a channel again and keep the duration of occupying the channel to be a preset first duration;

keeping the master station or the slave station of each communication device within the coverage area of the master station of the target communication system silent during the time when the target communication system occupies the channel again;

after the master station or the slave station of each communication device in the coverage area of the master station of the target communication system is found to keep silent, the target communication system keeps sending management frames according to a preset period so as to control the master station and the slave station of each communication device in the same space with the target communication system to no longer occupy channels.

Preferably, the structure of the link layer of the target communication system includes: a downlink time slot and an uplink time slot;

Wherein,

the downlink time slot is a wireless link from a master station of the target communication system to each slave station of the target communication system;

the uplink time slot is a wireless link from each secondary station of the target communication system to a primary station of the target communication system;

the downlink time slot comprises two parts of a broadcast time slot and a data time slot;

wherein,

the data time slot of the downlink time slot comprises at least two data frame packets, and each data frame of the downlink time slot corresponds to the access time of one slave station; each data frame of the downlink time slot comprises two subframes, wherein one subframe in each data frame of the downlink time slot is a frame corresponding to a guard interval of data between each secondary station, and the other subframe is a frame corresponding to transmission data of the downlink time slot.

Preferably, the method comprises the steps of,

each slave station of the target communication system performs data transmission work under the dispatching of the master station of the target communication system;

the master station of the target communication system starts working in a mode of firstly transmitting a downlink frame and then transmitting an uplink frame.

Preferably, the broadcast time slot of the downlink time slot is a management frame of a link layer of the target communication system;

The management frame comprises a data subframe and a time subframe;

wherein,

the time sub-frame of the management frame is set to occupy a maximum of 5ms;

the data subframe of the management frame comprises a fixed domain, an effective marker bit identifier, a variable domain and uplink scheduling information;

wherein,

the fixed domain information in the data sub-frame of the management frame is set as information which does not change dynamically;

the valid bit identification in the data subframe of the management frame comprises two identifications of 0 and 1, wherein if the valid bit identification in the data subframe of the management frame is set to 0, the existence of TA is indicated; if the valid bit identification in the data subframe of the management frame is set to be 1, the existence of link self-adaptive information in the management frame is indicated, wherein when the link self-adaptive information exists in the management frame, the adjustment period of the link self-adaptive information existing in the management frame is the same;

the variable domain in the data subframe of the management frame comprises link self-adaptive information;

the uplink scheduling information in the data subframe of the management frame comprises a target scheduling list and the number information of the slave stations.

Preferably, the uplink time slot includes at least one uplink data time slot and a first time slot;

Wherein,

the first time slot is a time slot reserved in the target communication system for a time interval for transmitting an access request to a master station of the target communication system by an inactive slave station;

the uplink data time slot is a data time slot sent from a slave station of the target communication system to a master station of the target communication system;

wherein,

each uplink data time slot comprises a second time slot and a third time slot; wherein, the second time slot is a time slot corresponding to a data protection time interval of data sent by a plurality of slave stations of the target communication system; the third time slot is a time slot in which a slave station of the target communication system transmits data to a master station of the target communication system.

Preferably, the setting the channel occupation information of the management frame of the link layer of the target communication system includes:

the channel occupation information of the management frame of the link layer of the target communication system is set to occupy the maximum duration of the channel to be 5ms.

Preferably, the method comprises the steps of,

the time length for the master station and the slave station of each first target communication device to perform countdown is 5ms;

the preset period duration is set to be 5ms;

the preset first time period is set to 5ms.

Preferably, the uplink scheduling information in the data subframe of the management frame includes information of the number of secondary stations up to 32 secondary stations supported by the target communication system.

An interference-free network transmission system, comprising: a target communication system and at least one communication device;

wherein,

each communication device is in the same space as the target communication system;

the target communication system comprises a master station and at least one slave station;

each of said communication devices comprising a master station and at least one slave station;

based on this, the first and second light sources,

the target communication system sets channel occupation information of a management frame of a corresponding link layer;

each of the communication devices determining whether a management frame sent by a master station in the target communication system for the first time has been received;

if first target communication devices which receive management frames sent by a master station of the target communication system for the first time exist in each communication device, each first target communication device analyzes the received management frames to obtain target information corresponding to the analyzed management frames, wireless signals are stopped from being sent after the target information corresponding to the analyzed management frames is determined to be obtained, and meanwhile, the master station and the slave station of each first target communication device perform countdown;

after the count-down of the master station and the slave station of each first target communication device is finished, each first target communication device judges whether the master station and the slave station of the first target communication device receive target information in a management frame sent by the master station of the target communication system again;

If the master station and the slave station of each first target communication device do not receive the target information in the management frame sent by the master station of the target communication system again, each first target communication device performs normal service;

before each first target communication device performs normal service, the master station of the target communication system sends a management frame again as a system frame at the beginning, wherein the management frame sent by the master station of the target communication system carries a target information frame so as to occupy a channel again and keep the duration of occupying the channel to be a preset first duration;

during the period that the target communication system occupies the channel again, the master station and the slave stations of the communication devices in the coverage area of the master station of the target communication system keep silent;

after the master station or the slave station of each communication device within the coverage area of the master station of the target communication system is found to be silent, the target communication system keeps transmitting a management frame according to a preset period so as to control the master station and the slave station of each communication device in the same space as the target communication system to no longer occupy channels.

An interference-free network transmission device, comprising: one or more processors, and memory;

The memory has stored therein computer readable instructions which, when executed by the one or more processors, implement the steps of the tamper resistant network transmission method of any of the preceding introduction.

As can be seen from the above-described technical solutions, when data communication needs to be performed between a secondary station and a primary station in a target communication system, the method provided by the embodiments of the present application may set channel occupation information of a management frame of a link layer of the target communication system, where the target communication system includes a primary station and at least one secondary station; the channel occupation information of the management frame of the link layer of the target communication system may be a time when the target communication system may occupy the channel, and setting the channel occupation information of the management frame of the link layer of the target communication system may determine how long the target communication system may occupy the channel. Therefore, after the channel occupation information of the management frame of the link layer of the target communication system is set, whether each communication device in the same space as the target communication system receives the management frame sent by the master station in the target communication system for the first time can be further judged; if it is determined that there are first target communication devices in the same space as the target communication system and that there are other communication devices that receive the management frame sent by the master station of the target communication system, it is indicated that communication between the master station and the slave stations of the target communication system may be interfered, so, in order to remove interference to the target communication system, each first target communication device may parse the received management frame to obtain target information corresponding to the parsed management frame, and after it is determined that the target information in the parsed management frame is obtained, each first target communication device is caused to stop sending wireless signals, and at the same time, the master station and the slave station of each first target communication device are caused to perform countdown; after the count-down of the master station and the slave station of each first target communication device is finished, the master station and the slave station of each first target communication device can be further judged whether target information in a management frame of the target communication system is received again or not; if the master station and the slave station of each first target communication device do not receive the target information in the management frame of the target communication system again, the channel is indicated to be occupied by the target communication system, and each first target communication device can be enabled to develop normal service.

Before each first target communication device performs normal service, a master station of the target communication system can be made to send a management frame again as a system frame to start, wherein the management frame sent by the master station of the target communication system carries a target information frame so as to occupy a channel again and keep the duration of the occupied channel as a preset first duration; during the period that the target communication system occupies the channel again, in order to avoid that the master station or the slave station of each communication device in the same space as the target communication system may again interfere with the communication between the master station and the slave station of the target communication system, the master station or the slave station of each communication device in the coverage area of the master station of the target communication system can be kept silent;

when the master station or the slave station of each communication device in the coverage area of the master station of the target communication system is found to be silent, the target communication system is kept to send management frames according to a preset period so as to control the master station and the slave station of each communication device in the same space with the target communication system to no longer occupy channels, thereby eliminating interference to the master station and the slave station of each communication device in the same space with the target communication system.

Therefore, when data communication is needed between the secondary station and the primary station in the target communication system, the method provided by the embodiment of the invention can effectively eliminate the interference caused by other communication equipment in the same space with the target communication system, can effectively avoid the interference of other communication equipment in the same space with the target communication system, and effectively ensure the data transmission stability of the target communication system.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic diagram of a network transmission system architecture capable of implementing anti-interference according to an embodiment of the present application;

fig. 2 is a schematic diagram of a link layer (MAC layer) structure of a target communication system according to an embodiment of the present application;

fig. 3 is a flowchart of a network transmission method for implementing interference resistance according to an embodiment of the present application;

Fig. 4 is a schematic structural diagram of a management frame (Beacon frame) of a link layer of a communication system according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a Beacon frame body according to an example of an embodiment of the present application;

fig. 6 is a schematic diagram of a fixed domain structure in a data subframe of a management frame according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of uplink scheduling information according to an example of the embodiment of the present application;

fig. 8 is a schematic diagram of a data transmission process between a master station and a slave station of a communication system according to an embodiment of the present application;

fig. 9 is a block diagram of a hardware structure of an anti-interference network transmission device according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In view of the fact that most of the anti-interference network transmission schemes are difficult to adapt to complex and changeable service demands at present, the applicant researches an anti-interference network transmission scheme, and when data communication is required between a secondary station and a primary station in a target communication system, the method provided by the embodiment of the application can effectively eliminate interference caused by other communication equipment in the same space with the target communication system, can effectively avoid interference of other communication equipment in the same space with the target communication system, and effectively ensures data transmission stability of the target communication system.

The methods provided by the embodiments of the present application may be used in a wide variety of general purpose or special purpose computing device environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet devices, multiprocessor devices, distributed computing environments that include any of the above devices or devices, and the like.

The embodiment of the application provides an anti-interference network transmission method, which can be applied to various network transmission systems, and also can be applied to various computer terminals or intelligent terminals, wherein an execution subject of the method can be a processor or a server of the computer terminal or the intelligent terminal.

An optional system architecture of a network transmission system capable of implementing interference immunity according to an embodiment of the present application is described below with reference to fig. 1, where, as shown in fig. 1, the system architecture may include: a target communication system and at least one communication device;

wherein,

each communication device is in the same space as the target communication system;

the target communication system may comprise one master station and at least one slave station; each master station of the target communication system may intervene in a plurality of slave stations, and each master station of the target communication system may serve as an access point of each slave station of the target communication system and a conversion device for converting wireless data into IP data, thereby forming a central node of the star-shaped network. Each slave station of the target communication system can develop data access and communication service under the dispatching of the master station.

In practice, the target communication system may be a point-to-multipoint system (also referred to as a PtMP system, point to MultiPoint system).

The communication device in the same space as the target communication system may be a WiFi product.

In the practical application process, generally, the transmission distance of the PtMP system is far, generally about 10KM, and the PtMP system is generally configured to perform channel competition by using the standard protocol of 802.11, and in the range of about 10KM, the PtMP system may be interfered by other general WiFi products, so that the stability of transmission may be affected.

Each communication device may comprise a master station and at least one slave station;

based on this, when the target communication system needs to occupy the channel for data transmission, the target communication system can set the channel occupation information of the management frame of the corresponding link layer.

Wherein,

the link layer (MAC layer) structure of the target communication system may be as shown in fig. 2.

As shown in fig. 2, the MAC layer frame structure of the target communication system is a MAC layer frame structure developed based on the physical layer technology of IEEE802.11, wherein some frames in the MAC layer frame structure of the target communication system follow the IEEE802.11 protocol.

Each communication device can determine whether the management frame sent by the master station in the target communication system for the first time can be received; if there is a first target communication device that receives the management frame sent by the master station of the target communication system for the first time in each communication device, it is indicated that communication between the master station and the slave station of the target communication system may be interfered by other communication devices in the same space as the target communication system, and normal data transmission cannot be performed.

Therefore, after the first target communication device receiving the management frame sent by the master station of the target communication system for the first time exists in each communication device, each first target communication device can analyze the received management frame so as to obtain target information corresponding to the analyzed management frame, and after the target information corresponding to the analyzed management frame is determined to be obtained, wireless signals are stopped from being sent, and meanwhile, the master station and the slave station of each first target communication device perform countdown so that occupied channels can be released, and the master station of the target communication system can master the channels.

After the count-down of the master station and the slave station of each first target communication device is finished, in order to confirm whether other communication devices still occupy channels, each first target communication device can respectively judge whether the master station and the slave station of the first target communication device receive target information in a management frame sent by the master station of the target communication system again.

If the master station and the slave station of each first target communication device do not receive the target information in the management frame sent by the master station of the target communication system again, the master station and the slave station of each first target communication device do not occupy the channel any more, and the master station and the slave station of each first target communication device can develop normal service.

In the actual application process, before each first target communication device performs normal service, the master station of the target communication system can send a management frame again as a system frame at the beginning, wherein the management frame sent by the master station of the target communication system carries a target information frame so as to occupy the channel again and keep the duration of occupying the channel to be a preset first duration; during the time that the target communication system again occupies the channel, the master station or the slave station of each communication device within the coverage area of the master station of the target communication system may be kept silent; after the master station or the slave station of each communication device in the coverage area of the master station of the target communication system is found to be silent, the target communication system can be kept to send management frames according to a preset period so as to control the master station and the slave station of each communication device in the same space with the target communication system to no longer occupy channels.

Therefore, when data communication is needed between the secondary station and the primary station in the target communication system, the method provided by the embodiment of the invention can effectively eliminate the interference caused by other communication equipment in the same space with the target communication system, can effectively avoid the interference of other communication equipment in the same space with the target communication system, and effectively ensure the data transmission stability of the target communication system.

The following describes, with reference to fig. 3, a flow of an anti-interference network transmission method according to an embodiment of the present application, as shown in fig. 3, where the flow may include the following steps:

step S101, setting channel occupation information of a management frame of a link layer of a target communication system.

Specifically, as can be seen from the above description, the structure of the link layer of the target communication system may be the structure shown in fig. 2.

As shown in fig. 2, the link layer frame structure of the target communication system may be a MAC layer developed based on the physical layer technology of IEEE802.11, in which some frames in the link layer of the target communication system follow the IEEE802.11 network protocol.

The uplink and the downlink of the IEEE802.11 network protocol belong to a TDMA protocol, the uplink and the downlink of the IEEE802.11 network protocol all work in the same frequency band, one period is divided into an uplink time slot and a downlink time slot, and the whole data frame of the IEEE802.11 network protocol is generally transmitted in a circulating way at fixed time intervals and is connected end to end.

The entire frame structure length of the IEEE802.11 network protocol is related to the length of time obtained by the acquisition.

Wherein the time interval of the entire frame of the IEEE802.11 network protocol is typically 5ms. A 5ms interval refers to the effective duration that a channel can be monopolized by a management frame of the link layer.

As shown in fig. 2, the management frame of the link layer of the target communication system may be a Beacon frame.

As can be seen from the above description, the target communication may be a PtMP system, and the target communication system may include a master station and at least one slave station.

In the practical application process, since the PtMP system is generally a TDMA system, the master station and the slave station network elements of the PtMP system can realize clock synchronization and time synchronization through GPS.

Accordingly, in order to allow the management frame of the target communication system to occupy the channel, channel occupancy information of the management frame of the link layer of the target communication system may be set.

For example, the channel occupancy information of the management frame of the link layer of the target communication system may be set such that the management frame of the link layer of the target communication system may occupy a channel duration of at most 5ms.

In the actual application process, the structure of the link layer of the target communication system may include two parts, namely a downlink time slot and an uplink time slot;

wherein,

as can be seen from the above description, the target communication system may comprise one master station and at least one slave station.

The downlink time slot may be a wireless link from the master station of the target communication system to each of the slaves of the target communication system;

The uplink time slots may be wireless links from respective secondary stations of a target communication system to a primary station of the target communication system;

the downlink time slot can comprise two parts of a broadcast time slot and a data time slot;

wherein,

the data time slot of the downlink time slot may include at least two data frame packets, where each data frame of the downlink time slot corresponds to an access time of a slave station; each data frame of the downlink time slot may include two subframes, where one subframe in each data frame of the downlink time slot may be a frame corresponding to a guard interval of data between the slave stations, and the other subframe may be a frame corresponding to transmission data of the downlink time slot.

Each slave station of the target communication system can carry out data transmission work under the dispatching of the master station of the target communication system;

the master station of the target communication system generally starts to operate in such a manner that a downlink frame is transmitted first and an uplink frame is transmitted later.

As can be seen from the above description, the link layer of the target communication system may include management frames.

And the broadcast time slot of the downlink time slot may be a management frame of the link layer of the target communication system;

the management frame of the link layer of the target communication system may include a data subframe and a time subframe;

For example, the number of the cells to be processed,

fig. 4 illustrates a schematic structure of a management frame (Beacon frame) of a link layer of a communication system.

As shown in fig. 4, the Beacon frame may include a Duration field and a FrameBody portion;

wherein,

the Duration field and the FrameBody portion in a Beacon frame are the time and data subframes, respectively, of the Beacon frame.

In the Duration field in the Beacon frame, a time for applying for the occupied space channel to the free space may be set, and according to the IEEE802.11 network protocol, an occupied time of 5ms may be applied.

In the Beacon frame body, which is mainly divided into four parts, the structure of the Beacon frame body can be as shown in fig. 5,

wherein,

the time sub-frame of the management frame of the link layer of the target communication system may be set to occupy a maximum of 5ms;

the data subframe of the management frame of the link layer of the target communication system may include four parts of a fixed domain, a valid bit identifier, a variable domain, and uplink scheduling information;

wherein,

the fixed domain information in the data subframe of the management frame may be set as information that does not dynamically change;

for example, fig. 6 illustrates a fixed domain structure diagram in a data subframe of a management frame.

As shown in fig. 6, the information in the fixed domain may include basic bandwidth information, slot allocation, power information of a primary station (i.e., primary station), extended domain information, uplink slot expected reception information, and UE minimum transmission power information, maximum transmission power information.

The valid bit identifier in the data subframe of the management frame may include two identifiers, namely 0 and 1, wherein if the valid bit identifier in the data subframe of the management frame is set to 0, the existence of TA is indicated; if the valid bit identification in the data subframe of the management frame is set to 1, the management frame has link self-adaptive information, wherein when the management frame has link self-adaptive information, the adjustment period of the link self-adaptive information of the management frame is the same.

For example, the adjustment period of the link adaptation information must be the same, and the period is to be updated at the same time, and all the link adaptation update information of the slave stations are queued together with the update information of the TA in chronological order.

The variable field in the data subframe of the management frame may include link adaptation information; the link adaptation information of the variable domain in the data subframe of the management frame may include adaptation information such as MCS, secondary station bandwidth, TPC, and the number of antennas.

The uplink scheduling information in the data subframe of the management frame may include a target scheduling list and number information of the secondary stations.

Wherein,

fig. 7 illustrates a schematic structure of uplink scheduling information.

As shown in fig. 7, the uplink scheduling information in the data subframe of the management frame may include uplink scheduling information in the Beacon frame, the number of bits to be occupied, the number of uplink scheduling users, an uplink scheduling list, and the number of supported secondary stations.

As shown in fig. 7, 32 indicates that the number of secondary stations in the target communication system is 32.

For example, the uplink scheduling information in the data subframe of the management frame includes the number of secondary stations information, and the number of secondary stations supported by the target communication system may be set to be at most 32.

Wherein,

the target scheduling list of the uplink scheduling information in the data subframe of the management frame may be a scheduling list based on the ue id and the OFDM symbol number content.

In the practical application process, the uplink time slot may include at least one uplink data time slot and a first time slot;

wherein,

the first time slot may be a time slot in the target communication system reserved for a time interval during which an inactive secondary station transmits an access request to a primary station of the target communication system;

The uplink data time slot may be a data time slot transmitted from a secondary station of the target communication system to a primary station of the target communication system;

wherein,

each uplink data time slot comprises a second time slot and a third time slot; the second time slot is a time slot corresponding to a data protection time interval of data sent by a plurality of slave stations of the target communication system; the third time slot is a time slot in which the secondary station of the target communication system transmits data to the primary station of the target communication system.

Step S102, judging whether each communication device in the same space with the target communication system receives the management frame sent by the master station in the target communication system for the first time.

Specifically, as can be seen from the foregoing description, the method provided in the embodiments of the present application may set channel occupancy information of a management frame of a link layer of a target communication system.

After setting the channel occupation information of the management frame of the link layer of the target communication system, the maximum duration that the management frame of the link layer of the target communication system can occupy the channel can be determined.

Therefore, in order to verify whether or not the management frame of the link layer of the target communication system is interfered during the channel occupation, it can be determined whether or not each communication device in the same space as the target communication system receives the management frame transmitted by the master station in the target communication system for the first time. If it is determined that there are first target communication devices that receive the management frame from the master station of the target communication system among the other communication devices in the same space as the target communication system, it is indicated that these first target communication devices are devices that may cause interference to the target communication system, and in order to cancel the interference of these devices to the target communication system, step S103 may be executed.

Step S103, enabling each first target communication device to parse the received management frame, thereby obtaining target information corresponding to the parsed management frame, and after determining to obtain the target information in the parsed management frame, enabling each first target communication device to stop sending wireless signals, and enabling the master station and the slave station of each first target communication device to perform countdown.

Specifically, as can be seen from the above description, in order to verify whether other communication devices in the same space as the target communication system will interfere with the target communication system, the method provided in the embodiment of the present application may determine whether each communication device in the same space as the target communication system receives the management frame sent by the master station in the target communication system for the first time.

If it is determined that there are first target communication devices in the other communication devices in the same space as the target communication system, which receive the management frame sent by the master station of the target communication system, the first target communication devices are devices possibly causing interference to the target communication system, in order to remove the interference of the devices to the target communication system, each first target communication device may parse the received management frame, thereby obtaining target information corresponding to the parsed management frame, and after it is determined that the target information in the parsed management frame is obtained, each first target communication device may be caused to stop sending wireless signals, and simultaneously, the master station and the slave station of each first target communication device may be caused to perform countdown, so that whether the master station and the slave station of each first target communication device have the target information in the management frame of the target communication system again received can be verified again.

Wherein,

the duration in which the master and slave of each first target communication device each develop a countdown may be set to 5ms.

Step S104, judging whether the master station and the slave station of each first target communication device receive the target information in the management frame of the target communication system again after the master station and the slave station of each first target communication device finish countdown.

Specifically, as can be seen from the foregoing description, in order to remove interference from other communication devices to the target communication system, the method provided by the embodiments of the present application may enable each first target communication device to parse the received management frame, thereby obtaining target information corresponding to the parsed management frame, and after determining that the target information in the parsed management frame is obtained, enable each first target communication device to stop sending a wireless signal, and enable the master station and the slave station of each first target communication device to perform countdown, so as to again verify whether the master station and the slave station of each first target communication device receive the target information in the management frame of the target communication system again.

If it is determined that the master station and the slave station of each first target communication device do not receive the target information in the management frame of the target communication system again, it indicates that the other communication devices cannot occupy the channel any more, and step S105 may be performed.

Step S105, enabling each of the first target communication devices to perform a normal service.

Specifically, as can be seen from the foregoing description, the method provided by the embodiment of the present application may determine whether the master station and the slave station of each first target communication device receive the target information in the management frame of the target communication system again, and if it is determined that the master station and the slave station of each first target communication device do not receive the target information in the management frame of the target communication system again, it is indicated that other communication devices cannot occupy the channel any more, and then normal service may be performed by each first target communication device.

Step S106, before each first target communication device carries out normal service, the master station of the target communication system is enabled to send a management frame again as a system frame to start, so as to occupy channels again and keep the duration of occupying channels to be a preset first duration.

Specifically, as can be seen from the foregoing description, the method provided by the embodiments of the present application may determine whether the master station and the slave station of each first target communication device receive the target information in the management frame of the target communication system again. And after determining that the master station and the slave station of each first target communication device do not receive the target information in the management frame of the target communication system again, each first target communication device may be caused to perform normal service.

In the actual application process, before each first target communication device performs normal service, the master station of the target communication system can also send a management frame again as a starting system frame, so as to occupy the channel again and keep the duration of occupying the channel to be the preset first duration.

Wherein,

the management frame sent by the master station of the target communication system carries a target information frame;

wherein,

the target information frame carried in the management frame sent by the master station of the target communication system may be the Duration frame described above.

The management frame sent by the master station of the target communication system carries a Duration frame, namely the Duration that the management frame sent by the master station of the target communication system can occupy the channel is indicated.

Wherein,

the preset period duration may be set to 5ms;

the preset first duration may be set to 5ms.

Step S107, during the period when the target communication system occupies the channel again, the master station or the slave station of each communication device in the coverage area of the master station of the target communication system is kept silent.

Specifically, as can be seen from the foregoing description, the method provided by the embodiment of the present application may enable the master station of the target communication system to send a management frame again as a system frame at the beginning, so as to occupy the channel again and keep the duration of occupying the channel to be 5ms.

During the re-occupation of the channel by the target communication system, in order to avoid that other communication devices may interfere with the communication between the master station and the slave stations of the target communication system, the master station or the slave stations of the respective communication devices within the coverage area of the master station of the target communication system may further be kept silent, so that the master station of the target communication system may be allowed to preempt the channel.

And step S108, after the master station or the slave station of each communication device in the coverage area of the master station of the target communication system is found to keep silent, the target communication system is kept to send management frames according to a preset period so as to control the master station and the slave station of each communication device in the same space with the target communication system to no longer occupy channels.

Specifically, as can be seen from the foregoing description, the method provided by the embodiments of the present application may further keep the master station or the slave station of each communication device in the coverage area of the master station of the target communication system silent during the period that the target communication system occupies the channel again, so that the master station of the target communication system may preempt the channel.

Thus, after the master station or the slave station of each communication device found to be within the coverage area of the master station of the target communication system remains silent, the target communication system can be kept transmitting management frames at a preset period to control the master station and the slave station of each communication device in the same space as the target communication system to no longer occupy the channel.

Because the master station of the target communication system communicates with the master station and the target communication system can send Beacon frames at regular time, the master station and the slave stations of other communication equipment which can cause interference to the target communication system in the same space with the target communication system can not occupy channels any more, and the anti-interference purpose is achieved.

In the actual application process, after the master station of the target communication system conducts dominant communication, as the slave station of the target communication system is a terminal of the system, a self-defined frame structure is arranged between the slave station and the master station;

the slave station of the target communication system does not adopt a CSMA/CA mechanism, is completely scheduled by the master station, and can normally communicate with the master station.

Thus, the intervention procedure of the secondary station terminal of the target communication system after power-on can be as follows:

(1) The transmission period of the Beacon frame transmitted by the master station of the target communication system is set to be 5ms, and the slave station of the target communication system accesses the master station of the target communication system in a passive mode;

(2) The secondary station of the target communication system performs contention access in CP (Cyclic Prefix) time slots in a Beacon frame structure in a random back-off mode, initiates a first piece of uplink information through an identity authentication request as the start of triggering random access, and considers that the random access flow of the secondary station is ended only when the secondary station of the target communication system needs to receive an identity authentication response of the primary station of the target communication system; for the secondary station with successful random access, the primary station and the secondary station are prepared for an automatic retransmission flow;

(3) After the identity authentication of the slave station of the target communication system is successful, the association flow can be carried out;

(4) After the association process is successful, an identity verification process can be performed;

(5) After the above processes are successful, the secondary station can send uplink data according to the uplink scheduling information in the Beacon frame, and the primary station determines downlink scheduling data to send according to the primary station buffer.

In order to ensure the reliability of signaling transceiving, all signaling transmissions used by the target communication system adopt mcs=0, wherein MCS (Modulation and Coding Scheme) is a modulation and coding strategy;

the scheduling modules in the master station and the slave station can determine the transmission priority of three types of data: for example, control frames take precedence over management frames, and data frames are next to management frames.

Next, with reference to fig. 8, a data transmission procedure between a master station and a slave station of the target communication system provided in the embodiment of the present application will be described.

As shown in fig. 8, the data transmission procedure between the master station and the slave station of the target communication system may be as follows:

1.1, slave station discovers master station: the slave station receives the Beacon frame of the master station and analyzes whether the BSSID/SSID in the Beacon frame is matched with the specific BSSID/SSID;

1.2, the slave station and the master station realize synchronization;

1.3, the secondary station calculates initial uplink transmitting power and timing advance;

1.4, the slave station initiates an identity authentication request to the master station in a backoff competition mode;

1.5, starting a timer waiting for authentication response by the slave station, and continuing to initiate the back-off if the identity authentication response sent by the master station is not received yet after the preset time is exceeded;

1.6, initializing an automatic retransmission process by the slave station;

2.1, the master station judges the number of users;

2.2, the master station confirms a white list of the slave station initiating the identity authentication request;

2.3, the master station performs TA adjustment;

2.4, the master station performs UE state maintenance initial access and allocates RTID;

2.5, the master station transmits an identity authentication response to start a timer waiting for the association request, if the timer is overtime, the identity authentication response is retransmitted, wherein the number of times of retransmitting the identity authentication response is at most three, and the timer waiting for the association request is restarted once every time the identity authentication response is retransmitted; after the maximum number of re-transmissions, still overtime, deleting the information of the secondary station;

2.6, the master station performs uplink scheduling and power information preparation;

2.7, initializing an automatic retransmission process by the master station;

3.1, the slave station receives the identity authentication response sent by the master station: if the identity authentication is determined to fail, the backoff competition access is not started any more; if the identity authentication is successful, continuing the subsequent flow;

3.2, the slave station adjusts the timing according to TA; uplink transmitting power adjustment is carried out according to the power control information;

3.3, the slave station initiates an association request according to the scheduling information;

and 3.4, starting a waiting association response timer by the secondary station, retransmitting association requests if association is not completed after timeout, wherein the secondary station can retransmit the association requests for 3 times at most, and carrying out back-off and deleting master station information if the number of times of the secondary station retransmitting the association requests exceeds 3 times.

4.1, the master station receives the association request sent by the slave station and immediately allows the slave station to associate;

4.2, the master station transmits an association response and starts an ACK waiting timer; if the waiting ACK timer is overtime, the associated response can be retransmitted, wherein the main station can retransmit the associated response for at most three times, and the waiting ACK timer needs to be restarted once every time the associated response is retransmitted; after the maximum number of re-transmissions, the time is still overtime, and the information of the secondary station is deleted;

5.1, the slave station receives the association response of the master station: sending ACK to confirm;

5.2, the secondary station receives the association response confirmation of the primary station and can be considered as successful association with the primary station, and if the secondary station has uplink data, the secondary station periodically reports the BSR;

and 6.1, the master station receives the ACK of the slave station, and can update the state of the slave station to be accessed so as to carry out uplink/downlink normal data flow.

7.1, the slave station receives uplink scheduling information in the Beacon frame to transmit uplink data; the secondary station initiates identity verification before sending uplink data, namely performs four-way handshake.

The specific process flow of the above anti-interference network transmission method may be described with reference to the above anti-interference network transmission system part.

According to the technical scheme, when the slave station and the master station in the target communication system need to perform data communication, the interference caused by other communication equipment in the same space with the target communication system can be effectively eliminated, the interference of other communication equipment in the same space with the target communication system can be effectively avoided, and the data transmission stability of the target communication system is effectively ensured.

The anti-interference network transmission device provided by the embodiment of the application can be applied to anti-interference network transmission equipment, such as a terminal: cell phones, computers, etc. Optionally, fig. 9 is a block diagram of a hardware structure of an anti-interference network transmission device, and referring to fig. 9, the hardware structure of the anti-interference network transmission device may include: at least one processor 1, at least one communication interface 2, at least one memory 3 and at least one communication bus 4.

In the embodiment of the present application, the number of the processor 1, the communication interface 2, the memory 3, and the communication bus 4 is at least one, and the processor 1, the communication interface 2, and the memory 3 complete communication with each other through the communication bus 4.

The processor 1 may be a central processing unit CPU, or an application specific integrated circuit ASIC (master station plication Specific Integrated Circuit), or one or more integrated circuits configured to implement embodiments of the present application, etc.;

the memory 3 may comprise a high-speed RAM memory, and may further comprise a non-volatile memory (non-volatile memory) or the like, such as at least one magnetic disk memory;

wherein the memory stores a program, the processor is operable to invoke the program stored in the memory, the program operable to: and realizing each processing flow in the anti-interference network transmission scheme of the terminal.

The embodiment of the application also provides a readable storage medium, which can store a program suitable for being executed by a processor, the program being configured to: and realizing each processing flow of the terminal in the anti-interference network transmission scheme.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. The various embodiments may be combined with one another. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An anti-interference network transmission method, comprising:

setting channel occupation information of a management frame of a link layer of a target communication system, wherein the target communication system comprises a master station and at least one slave station;

judging whether each communication device in the same space as the target communication system receives a management frame sent by a master station in the target communication system for the first time;

If it is determined that there are first target communication devices that receive a management frame sent by a master station of the target communication system in other communication devices in the same space as the target communication system, each first target communication device is caused to parse the received management frame, so as to obtain target information corresponding to the parsed management frame, after it is determined that the target information in the parsed management frame is obtained, each first target communication device is caused to stop sending a wireless signal, and simultaneously, a master station and a slave station of each first target communication device are caused to perform countdown;

after the count-down of the master station and the slave station of each first target communication device is finished, judging whether the master station and the slave station of each first target communication device receive target information in a management frame of the target communication system again;

if the master station and the slave station of each first target communication device do not receive the target information in the management frame of the target communication system again, enabling each first target communication device to develop normal service;

before each first target communication device performs normal service, a master station of the target communication system sends a management frame again as a system frame to occupy channels again and keep the time length of occupying the channels as a preset first time length, wherein the management frame sent by the master station of the target communication system carries a target information frame;

Keeping the master station or the slave station of each communication device within the coverage area of the master station of the target communication system silent during the time when the target communication system occupies the channel again;

after the master station or the slave station of each communication device in the coverage area of the master station of the target communication system is found to keep silent, the target communication system keeps sending management frames according to a preset period so as to control the master station and the slave station of each communication device in the same space with the target communication system to no longer occupy channels.

2. The method of claim 1, wherein the structure of the link layer of the target communication system comprises: a downlink time slot and an uplink time slot;

wherein,

the downlink time slot is a wireless link from a master station of the target communication system to each slave station of the target communication system;

the uplink time slot is a wireless link from each secondary station of the target communication system to a primary station of the target communication system;

the downlink time slot comprises two parts of a broadcast time slot and a data time slot;

wherein,

the data time slot of the downlink time slot comprises at least two data frame packets, and each data frame of the downlink time slot corresponds to the access time of one slave station; each data frame of the downlink time slot comprises two subframes, wherein one subframe in each data frame of the downlink time slot is a frame corresponding to a guard interval of data between each secondary station, and the other subframe is a frame corresponding to transmission data of the downlink time slot.

3. The method of claim 2, wherein the step of determining the position of the substrate comprises,

each slave station of the target communication system performs data transmission work under the dispatching of the master station of the target communication system;

the master station of the target communication system starts working in a mode of firstly transmitting a downlink frame and then transmitting an uplink frame.

4. The method of claim 2, wherein the broadcast time slot of the downlink time slot is a management frame of a link layer of the target communication system;

the management frame comprises a data subframe and a time subframe;

wherein,

the time sub-frame of the management frame is set to occupy a maximum of 5ms;

the data subframe of the management frame comprises a fixed domain, an effective marker bit identifier, a variable domain and uplink scheduling information;

wherein,

the fixed domain information in the data sub-frame of the management frame is set as information which does not change dynamically;

the valid bit identification in the data subframe of the management frame comprises two identifications of 0 and 1, wherein if the valid bit identification in the data subframe of the management frame is set to 0, the existence of TA is indicated; if the valid bit identification in the data subframe of the management frame is set to be 1, the existence of link self-adaptive information in the management frame is indicated, wherein when the link self-adaptive information exists in the management frame, the adjustment period of the link self-adaptive information existing in the management frame is the same;

The variable domain in the data subframe of the management frame comprises link self-adaptive information;

the uplink scheduling information in the data subframe of the management frame comprises a target scheduling list and the number information of the slave stations.

5. The method of claim 2, wherein the uplink time slots comprise at least one uplink data time slot and a first time slot;

wherein,

the first time slot is a time slot reserved in the target communication system for a time interval for transmitting an access request to a master station of the target communication system by an inactive slave station;

the uplink data time slot is a data time slot sent from a slave station of the target communication system to a master station of the target communication system;

wherein,

each uplink data time slot comprises a second time slot and a third time slot; wherein, the second time slot is a time slot corresponding to a data protection time interval of data sent by a plurality of slave stations of the target communication system; the third time slot is a time slot in which a slave station of the target communication system transmits data to a master station of the target communication system.

6. The method according to claim 1, wherein the setting the channel occupancy information of the management frame of the link layer of the target communication system includes:

The channel occupation information of the management frame of the link layer of the target communication system is set to occupy the maximum duration of the channel to be 5ms.

7. The method of claim 1, wherein the step of determining the position of the substrate comprises,

the time length for the master station and the slave station of each first target communication device to perform countdown is 5ms;

the preset period duration is set to be 5ms;

the preset first time period is set to 5ms.

8. The method of claim 4, wherein the uplink scheduling information in the data subframe of the management frame includes information of the number of secondary stations up to 32 for the number of secondary stations supported by the target communication system.

9. An interference-free network transmission system, comprising: a target communication system and at least one communication device;

wherein,

each communication device is in the same space as the target communication system;

the target communication system comprises a master station and at least one slave station;

each of said communication devices comprising a master station and at least one slave station;

based on this, the first and second light sources,

the target communication system sets channel occupation information of a management frame of a corresponding link layer;

each of the communication devices determining whether a management frame sent by a master station in the target communication system for the first time has been received;

If first target communication devices which receive management frames sent by a master station of the target communication system for the first time exist in each communication device, each first target communication device analyzes the received management frames to obtain target information corresponding to the analyzed management frames, wireless signals are stopped from being sent after the target information corresponding to the analyzed management frames is determined to be obtained, and meanwhile, the master station and the slave station of each first target communication device perform countdown;

after the count-down of the master station and the slave station of each first target communication device is finished, each first target communication device judges whether the master station and the slave station of the first target communication device receive target information in a management frame sent by the master station of the target communication system again;

if the master station and the slave station of each first target communication device do not receive the target information in the management frame sent by the master station of the target communication system again, each first target communication device performs normal service;

before each first target communication device performs normal service, the master station of the target communication system sends a management frame again as a system frame to occupy channels again and keep the time length of occupying the channels as a preset first time length, wherein the management frame sent by the master station of the target communication system carries a target information frame;

During the period that the target communication system occupies the channel again, the master station and the slave stations of the communication devices in the coverage area of the master station of the target communication system keep silent;

after the master station or the slave station of each communication device within the coverage area of the master station of the target communication system is found to be silent, the target communication system keeps transmitting a management frame according to a preset period so as to control the master station and the slave station of each communication device in the same space as the target communication system to no longer occupy channels.

10. An interference-free network transmission device, comprising: one or more processors, and memory;

stored in the memory are computer readable instructions which, when executed by the one or more processors, implement the steps of the tamper-resistant network transmission method of any one of claims 1 to 8.