WO2017054562A1

WO2017054562A1 - Random competition method, station, access point and system

Info

Publication number: WO2017054562A1
Application number: PCT/CN2016/090870
Authority: WO
Inventors: 马驰翔; 林英沛
Original assignee: 华为技术有限公司
Priority date: 2015-09-30
Filing date: 2016-07-21
Publication date: 2017-04-06
Also published as: CN106559911A; CN106559911B

Abstract

Disclosed are a random competition method, a station, an access point and a system. The method comprises: a station receiving indication information sent by an access point, wherein the indication information at least carries resource positions pre-allocated by the access point to different types of service frames; according to the resource positions in the indication information which are allocated to different types of service frames, determining resource positions respectively corresponding to service frames to be transmitted; and performing a competition at the resource positions corresponding to the service frames to be transmitted, and sending the service frames to be transmitted to the access point after a transmission resource is successfully obtained through contention for the service frames to be transmitted. That is to say, in the technical solutions in the embodiments of the present invention, different resource positions are pre-allocated to different types of service frames, and a station participates in a competition at resource positions corresponding to service frames to be transmitted instead of only participating in a competition at a resource position with an AID equal to zero, thereby improving the success probability of the station participating in a random competition.

Description

Stochastic competition method, site, access point and system

This application claims the priority of the Chinese patent application filed on September 30, 2015, the Chinese Patent Office, application number 201510641393.9, and the invention titled “a random competition method, site, access point and system”. The citations are incorporated herein by reference.

Technical field

The present invention relates to the field of network communication technologies, and in particular, to a random competition method, a station, an access point, and a system.

Background technique

In the existing WLAN system, the uplink data transmission is mainly performed through a random competition mechanism. In the uplink data transmission process, an OFDMA (Orthogonal Frequency Division Multiple Access) technology is introduced, firstly an AP. (Access Point, access point) sends a trigger frame to the STA (Station) to trigger the uplink data transmission. After receiving the trigger frame sent by the AP, the STA can only be associated with the AID (Association Identification) equal to 0. After the competition is successfully performed on the resource block, the corresponding service frame is sent to the AP.

However, in the above-mentioned existing uplink data transmission process, the STA can only send one type of service frame to the AP at a time, that is, the prior art solution is directed to the existence of only one type of service frame. In this case, the service frame of this type is transmitted on a resource block with an AID equal to 0, and when there are multiple different types of service frames, multiple different types of service frames compete with each other, that is, the prior art In the case that there are multiple different types of service frames, the multiple different types of service frames can only be transmitted on resource blocks with an AID equal to 0. Thus, as the service frame type increases, the prior art solution It will reduce the probability of success of site competition access.

Summary of the invention

In view of this, the present invention provides a random competition method, a site, an access point, and a system, which can Different types of service frames are transmitted at the same time to improve the probability of successful random access to the site.

To achieve the above objective, the embodiment of the present invention provides the following solutions:

A first aspect of the embodiments of the present invention provides a random competition method, including:

The station receives the indication information sent by the access point, where the indication information at least carries the resource location allocated by the access point in advance for different types of service frames;

Determining, according to the resource locations allocated by the different types of service frames, the resource locations corresponding to the service frames to be transmitted;

Competing on the resource location corresponding to the service frame to be transmitted, and after successfully contending for the transmission resource for the to-be-transmitted service frame, sending the service frame to be transmitted to the access point.

With reference to the first aspect, in a first possible implementation manner of the first aspect, when the data frame to be transmitted includes a data frame, the content is competed on a resource location corresponding to the service frame to be transmitted. The process includes:

Receiving, by the station, a packet length threshold of the packet transmission sent by the access point;

Determining whether the length of the data frame is smaller than a packet length threshold of the packet transmission;

If yes, competing at a resource location corresponding to the data frame;

If no, the site withdraws from this competition.

With reference to the first aspect, in a second possible implementation manner of the first aspect, the contenting is performed on a resource location corresponding to the service frame to be transmitted, and the content is successfully contending for transmission to the to-be-transmitted service frame. After the resource is sent, the process of sending the service frame to be transmitted to the access point includes:

And performing the backoff according to the time of the resource location corresponding to the to-be-transmitted service frame, and confirming that the to-be-transmitted service frame successfully contends to the transmission resource, according to the CSMA contention mechanism with collision avoidance The access point sends the service frame to be transmitted;

Alternatively, according to the OFDM-based contiguous frequency-of-access-based contending contention ODCA competition mechanism, the time-frequency resource block is backed off at the resource location corresponding to the to-be-transmitted service frame, and the service frame to be transmitted is successfully confirmed. After competing to the transmission resource, the service frame to be transmitted is sent to the access point.

With reference to the first aspect, in a third possible implementation manner of the first aspect, the determining, according to the resource location allocated by the different types of service frames in the indication information, determining a resource location corresponding to each of the service frames to be transmitted The process includes:

Obtaining a basic service set identity identifier included in the indication information, and determining, according to the basic service set identity identifier, whether the access point is in the same basic service set as the site;

If yes, determining resource locations corresponding to the service frames to be transmitted according to resource locations allocated for different types of service frames in the indication information;

If no, the site withdraws from this competition.

With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the method further includes:

Adding a frame end flag and/or a signal extension to the to-be-transmitted service frame that is transmitted on the corresponding transmission resource location, respectively, based on the transmission resource size that is allocated in the instruction information for the different types of service frames. Length information.

A second aspect of the embodiments of the present invention provides a random competition method, including:

The access point sends the indication information to the station, where the indication information carries at least the resource location allocated for the different types of service frames, so that the site competes on the resource location corresponding to the service frame to be transmitted;

After the station successfully contends to the transmission resource for the to-be-transmitted service frame, the service frame to be transmitted sent by the station is received at the corresponding transmission resource location.

With reference to the second aspect, in a first possible implementation manner of the second aspect, before the sending the indication information to the station, the method further includes:

Different resource locations are assigned to different types of service frames according to service requests of different types of service frames.

With reference to the second aspect, in a second possible implementation manner of the second aspect, the method further includes: the access point sending, to the station, a packet length threshold of packet transmission.

In conjunction with the second aspect, in a third possible implementation manner of the second aspect, before the sending the indication information to the station, the method further includes:

And estimating, according to the historical information, the resource size required for the transmission of the different types of service frames, and correspondingly, the indication information sent to the station further includes: a transmission resource size allocated in advance for different types of service frames, so that the site is based on the Adding the frame size of the transmission resource to be transmitted in the corresponding transmission resource location, respectively, the transmission resource size allocated in advance for different types of service frames Length information for bundle flags and/or signal extensions.

A third aspect of the embodiments of the present invention provides a site, including:

The first receiving unit is configured to receive the indication information that is sent by the access point, where the indication information includes at least a resource location that the access point allocates in advance for different types of service frames;

a determining unit, configured to determine, according to the resource locations allocated for different types of service frames in the indication information, a resource location corresponding to each of the service frames to be transmitted;

a competition unit, configured to compete on a resource location corresponding to the service frame to be transmitted;

And a first sending unit, configured to send a successfully-competitive service frame to the access point after successfully contending for the transmission resource for the to-be-transmitted service frame.

With reference to the third aspect, in a first possible implementation manner of the third aspect, when the data frame to be transmitted includes the data frame, the contention unit includes:

a second receiving unit, configured to receive a packet length threshold of the packet transmission sent by the access point;

a determining unit, configured to determine whether a length of the data frame is smaller than a packet length threshold of the packet transmission;

An execution unit, configured to: when the determining unit determines that the length of the data frame is smaller than a packet length threshold of the packet transmission, compete on a resource location corresponding to the data frame; otherwise, the station exits the current time. competition.

With reference to the third aspect, in a second possible implementation manner of the third aspect, the contention unit is configured to perform time backoff according to a CSMA contention mechanism on a resource location corresponding to the service frame to be transmitted;

The first sending unit is configured to send the service frame to be transmitted to the access point after confirming that the to-be-transmitted service frame successfully contends to a transmission resource;

or;

The contention unit is configured to perform backoff according to the time-frequency resource block on the resource location corresponding to the service frame to be transmitted according to the ODCA competition mechanism;

The first sending unit is configured to send the service frame to be transmitted to the access point after confirming that the to-be-transmitted service frame successfully contends to a transmission resource.

With reference to the third aspect, in a third possible implementation manner of the third aspect, the determining unit is configured to obtain a basic service set identity identifier included in the indication information, and determine, according to the basic service set identity identifier, Whether the access point is in the same basic service set as the site; if yes, determining the resource location corresponding to the service frame to be transmitted according to the resource location allocated for the different types of service frames in the indication information; if not, The site exits this competition.

With reference to the third aspect, in a fourth possible implementation manner of the third aspect, the adding unit is configured to perform, according to the transmission resource size that is allocated in the indication information in advance for different types of service frames, in the corresponding transmission The frame end flag and/or the length information of the signal extension are respectively added to the to-be-transmitted service frame for transmission on the resource location.

A fourth aspect of the embodiments of the present invention provides a station, including: a memory for storing a random contention program, and a processor connected to the memory;

The processor is configured to execute the random contention procedure, specifically, the indication information that is sent by the access point, where the indication information includes at least a resource location that the access point allocates in advance for different types of service frames; a resource location allocated for a different type of service frame, determining a resource location corresponding to each of the service frames to be transmitted; competing at the resource location corresponding to the service frame to be transmitted, and succeeding in the service frame to be transmitted After competing to the transmission resource, the service frame to be transmitted is sent to the access point.

A fifth aspect of the embodiments of the present invention provides an access point, including:

a second sending unit, configured to send the indication information to the station, where the indication information carries at least a resource location that is allocated in advance for different types of service frames, so that the station competes on a resource location corresponding to the service frame to be transmitted;

And a third receiving unit, configured to: after the station successfully contends for the transmission resource for the to-be-transmitted service frame, receive the to-be-transmitted service frame sent by the station at a corresponding transmission resource location.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the method further includes: an allocating unit, configured to allocate different resource locations for different types of service frames according to service requests of different types of service frames.

In conjunction with the fifth aspect, in a second possible implementation manner of the fifth aspect, the second sending unit is further configured to: send a packet length threshold of the packet transmission to the station.

With reference to the fifth aspect, in a third possible implementation manner of the fifth aspect, the method further includes:

And an estimating unit, configured to estimate, according to the historical information, a resource size required for the transmission of the different types of service frames, and correspondingly, the indication information sent by the second sending unit to the station further includes: a transmission allocated in advance for different types of service frames. The size of the resource. .

A sixth aspect of the embodiments of the present invention provides an access point, including: a memory for storing a random contention program, and a processor connected to the memory; the processor is configured to execute the random contention program, specifically The station sends the indication information, where the indication information carries at least the resource location allocated for the different types of service frames, so that the site competes on the resource location corresponding to the service frame to be transmitted; After the transmission service frame successfully contends to the transmission resource, the service frame to be transmitted sent by the station is received at the corresponding transmission resource location.

A seventh aspect of the embodiments of the present invention provides a random competition system, including:

The site as described earlier, and the access point as described above.

According to the foregoing technical solution, the present invention discloses a random competition method, a station, an access point, and a system, and receives indication information sent by an access point through a station, where the indication information is at least carried. The resource location allocated by the access point in advance for the different types of service frames; determining the resource locations corresponding to the service frames to be transmitted according to the resource locations allocated for the different types of service frames in the indication information; Competing for the resource location corresponding to the service frame, and after successfully contending for the transmission resource for the to-be-transmitted service frame, the service frame to be transmitted is sent to the access point. That is, the technical solution of the embodiment of the present invention is to allocate different resource locations for different types of service frames in advance, and the site participates in the competition in the resource location corresponding to the service frame to be transmitted, instead of only the AID is equal to 0. Participating in competition in resource locations increases the probability of success of sites participating in random competition.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic flow chart of Embodiment 1 of a random competition method according to the present disclosure;

2 is a schematic diagram of a frame structure disclosed by the present invention;

FIG. 3 is a schematic diagram of another frame structure disclosed by the present invention; FIG.

4 is a schematic diagram of still another frame structure disclosed by the present invention;

FIG. 5 is a schematic flowchart diagram of Embodiment 2 of a random competition method according to the present disclosure;

FIG. 6 is a schematic diagram of still another frame structure disclosed by the present invention; FIG.

FIG. 7 is a schematic flowchart of Embodiment 3 of a random competition method according to the present disclosure;

FIG. 8 is a schematic structural diagram of a station embodiment 4 according to the present disclosure; FIG.

FIG. 9 is a schematic structural diagram of Embodiment 5 of an access point according to the present disclosure.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The terms "first", "second" and the like in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a particular order or order. It is to be understood that the terms so used are interchangeable as appropriate, and are merely illustrative of the manner in which the objects of the same. In addition, the terms "comprises" and "comprises" and "comprises", and any variations thereof, are intended to cover a non-exclusive inclusion so that a process, method, system, product, or device comprising a series of units is not necessarily limited to those elements, but may include Other units listed or inherent to these processes, methods, products or equipment.

It can be seen from the prior art that in the existing wireless local area network system, the uplink data transmission is mainly performed through a random competition mechanism, and in the prior art, only one type of service frame is involved in the competition. In the case of contention, the random competition mechanism is adopted: the AP sends a trigger frame to the STA to trigger the uplink data transmission. After receiving the trigger frame sent by the AP, the STA performs the contention access on the resource block with the AID equal to 0. The competition is successful. After that, the corresponding service frame is sent to the AP. When there are multiple different types of service frames, multiple different types of service frames can also be transmitted on resource blocks with AID equal to 0, but not on other resource blocks. That is to say, as the type of service frame increases, the position of competition participation does not increase, which reduces the probability of successful random competition at the site.

To this end, the embodiment of the present invention provides a random contention method, in which the station receives the indication information sent by the access point, where the indication information carries at least the resource location allocated by the access point for different types of service frames in advance; a resource location allocated for a different type of service frame in the indication information, determining a resource location corresponding to each of the service frames to be transmitted; competing at a resource location corresponding to the service frame to be transmitted, and being in the to-be-transmitted After the service frame successfully contends to the transmission resource, the service frame to be transmitted is sent to the access point. That is, the technical solution of the embodiment of the present invention is to allocate different resource locations for different types of service frames in advance, and the site participates in the competition in the resource location corresponding to the service frame to be transmitted, instead of only the AID is equal to 0. Participating in competition in resource locations increases the probability of success of sites participating in random competition.

The above described objects, features and advantages of the present application will become more apparent and understood.

1 is a random competition method according to Embodiment 1 of the present invention. The method is performed by a site, and the method includes:

S101: The station receives the indication information sent by the access point.

The indication information carries at least a resource location allocated by the access point in advance for different types of service frames, and the indication information can pass the HE-SIG-B (High Efficient Signal B Field) in the physical layer. The indication of B) can also be indicated by adding a field at the MAC layer, and the embodiment of the present invention does not limit it. The indication information may be the TFR indication information, that is, the indication information is carried in the TFR frame, or the indication information is carried in the other frame, which is not limited in the embodiment of the present invention.

Specifically, please refer to FIG. 2 , which is a schematic diagram of a frame structure of carrying indication information in a physical layer through a HE-SIG-B in a TFR frame according to an embodiment of the present invention, where the HE-SIG-B in the TFR frame is used. The resource location RU indication that the access point pre-allocates for different types of service frames, in TFR The basic service set identity BSS color may also be carried in the HE-SIG-A (High Efficient Signal A Field) of the frame. The legacy preamble in the TFR frame is a traditional preamble.

FIG. 3 is a schematic structural diagram of a frame in which a field is added in a MAC layer to carry indication information according to an embodiment of the present disclosure, where a PHY preamble in a TFR frame indicates a physical layer preamble, and a MAC header indicates a MAC layer header field, Packet Length indicates the length of the frame, and the RU indication is the resource location that the access point allocates in advance for different types of service frames.

The resource location allocated by the access point carried in the indication information for different types of service frames is a type of resource allocation information, which is used by the access point in advance for different types of service frames in the contention access process. The scope of the resource block is specifically indicated in the following manners, but the embodiment of the present invention is not limited to the following manners:

One: indicating the starting number of the resource block occupied by each different type of service frame, and the number of consecutive occupied resource blocks;

Second: indicate the type of the service frame to which each resource block belongs;

Third, the AID indicates the range of resource blocks allocated for different types of service frames. For example, the resource block identifier AID assigned to the association request service frame is 0, and the resource block identifier AID assigned to the bandwidth request service frame is 1, and the allocation is performed. The resource block of the packet is identified by an AID of 2.

It should be noted that, since different types of service frames are transmitted, the lengths of the transmitted service frames need to be consistent, that is, the transmission starts at the same time, and the transmission of all the service frames is ended at the same time. The indication information sent by the access point to be sent also needs to carry the transmission resource size allocated in advance for different types of service frames. Referring to FIG. 4, the length of the SIGNAL in the traditional preamble Legacy preamble is used to indicate the transmission resource size allocated for different types of service frames, that is, different types of service frames can be transmitted. The packet length range, SIGNAL indicates the signaling field in the Legacy preamble, and length indicates the length of the frame.

The meanings of the fields of the frame structure in FIG. 4 are as follows: PLCP preamble indicates the physical layer preamble, RATE indicates the transmission rate of the DATA portion, Reserved is the reserved field, Length is the length of the frame, Parity is the check field, and Tail is the signal Or the tail field of the data part, SERVICE is the service field, the PSDU is the data packet encapsulated by the physical layer, the Pad bits are the physical layer padding field, and the SIGNAL is the signaling field.

The embodiment of the present invention may also carry the transmission resource size that is allocated in advance for different types of service frames by using other frames or other fields, which is not limited in this embodiment of the present invention.

The embodiment of the present invention may separately add a frame end flag to the to-be-transmitted service frame that is transmitted on the corresponding transmission resource location, based on the transmission resource size that is previously allocated for the different types of service frames carried in the indication information. And/or length information of the signal extension, so as to ensure the consistency of the length of the service frame to be transmitted, the end of frame flag is used to indicate the end of the transmission of the service frame, and the length information of the signal extension is used to fill the length of the service frame. Can be represented by a random number.

S102: Determine a resource location corresponding to each service frame to be transmitted according to resource locations allocated for different types of service frames in the indication information.

Specifically, the resource location corresponding to the service frame to be transmitted is determined according to the resource location allocated for the different types of service frames in the indication information by acquiring the indication information.

Preferably, after receiving the indication information sent by the access point, the station first determines, according to the basic service set identity identifier carried in the indication information, whether the access point is in the same basic service set as the site, and if yes, Determining, according to the resource locations allocated for different types of service frames, the resource locations corresponding to the service frames to be transmitted; if not, the site exits the competition.

S103: Compete on a resource location corresponding to the service frame to be transmitted;

Specifically, based on the resource location allocated for the different types of service frames carried in the indication information, the site competes on the resource location corresponding to the service frame to be transmitted, and the following competition mechanism may be adopted:

First, according to the CSMA (Carrier Sense Multiple Access with Collision Avoidance) competition mechanism, the station retreats according to time at the resource location corresponding to the service frame to be transmitted, and competes, specifically Each time a resource block is allocated to a site (the number of allocated resource blocks is not limited), the backoff counter of the site is decremented by 1. When the backoff counter is reduced to 0, the competition is successful.

Second, according to the ODCA (OFDMA-based Distributed Contention Access, CDMA-based distributed contention) competition mechanism, the station performs backoff according to the time-frequency resource block at the resource location corresponding to the service frame to be transmitted. That is, each time a resource block is allocated to the station, the backoff counter of the station is subtracted from the number of resource blocks allocated in the time, and when the backoff counter is reduced to be equal to or less than 0, the competition is successful; or, each time the resource is allocated for the station. Block (number of resource blocks allocated each time) Not limited to), the station reduces the backoff counter by one every time it encounters an allocated resource block, and when the backoff counter is reduced to 0, it indicates that the competition is successful.

S104: After the communication frame to be transmitted successfully competes for the transmission resource, send the service frame to be transmitted to the access point.

And after the acknowledgment that the to-be-transmitted service frame successfully contends to the transmission resource, the service frame to be transmitted is sent to the access point.

A random competition method disclosed in Embodiment 1 of the present invention, the station receives the indication information sent by the access point, where the indication information at least carries the resource location allocated by the access point for different types of service frames in advance; according to the indication a resource location allocated for a different type of service frame in the information, determining a resource location corresponding to each of the service frames to be transmitted; competing at a resource location corresponding to the service frame to be transmitted, and being in the to-be-transmitted service frame After successfully competing for the transmission resource, the service frame to be transmitted is sent to the access point. That is, the technical solution of the embodiment of the present invention is to allocate different resource locations for different types of service frames in advance, and the site participates in the competition in the resource location corresponding to the service frame to be transmitted, instead of only the AID is equal to 0. Participating in competition in resource locations increases the probability of success of sites participating in random competition.

FIG. 5 is a flowchart of a random competition method according to Embodiment 2 of the present invention. The method is performed by a station, and the embodiment of the present invention defines that when a service frame to be transmitted includes a data frame, The methods include:

S201: The station receives the indication information sent by the access point and the packet length threshold of the packet transmission;

The indication information may be the TFR indication information, that is, the indication information is carried in the TFR frame, or the indication information is carried in the other frame, which is not limited in the embodiment of the present invention. The indication information carries a resource location that the access point allocates in advance for different types of service frames.

The packet length threshold of the packet transmission may be carried by the TFR indication information or carried by the Beacon frame. Referring to FIG. 6, the packet length threshold of the packet transmission is described by adding a field in the Beacon frame, and the Threshold for small packet in the Beacon frame indicates the packet length threshold of the packet transmission. Since this threshold does not change frequently, it can be transmitted through the Beacon frame, thereby reducing the content of each TFR indication information transmission.

S202: Determine, according to the resource location allocated for different types of service frames in the indication information, The resource location corresponding to the data frame;

The above S201-S202 is the same as that disclosed in the above-mentioned S101-S102 in the first embodiment of the present invention. Since this part of the content has been described in detail in the first embodiment of the present invention, the embodiment of the present invention will not be described again.

S203: determining whether the length of the data frame is smaller than the packet length threshold of the packet transmission, if yes, proceed to S204, and if not, proceed to S206;

Since the data frame contains small packet services with a small amount of data, the small packet service has a small amount of data, but the number thereof is relatively large, and the prior art scheme does not distinguish the small packet service whose data volume is relatively small, but The packet service is transmitted as a normal data frame according to the normal data frame transmission process, and the data volume of the packet service itself is relatively small, and in the prior art, the AP scheduling is scheduled according to the size of the normal data packet, so that A scheduling overhead is generated; and, in accordance with the normal data frame transmission process, a small packet service with a small amount of data is also wasted. Therefore, the scheduling overhead and the waste of time in the transmission packet service in the prior art can reduce the transmission efficiency of the packet service. In the process of transmission, when a large number of packet services are used as normal data frames and control frames, When the management frames participate in the competition together, the transmission efficiency of the control frame and the management frame is also greatly reduced.

Therefore, Embodiment 2 of the present application discloses that when the data frame to be transmitted includes a data frame, it is required to distinguish the packet service in the data frame, that is, the packet transmitted by the length of the data frame to be transmitted and the packet. The comparison of the long thresholds is performed to determine whether the data frame to be transmitted is a packet service. If it is determined that the length of the data frame is smaller than the packet length threshold of the packet transmission, the data frame is determined to be a packet service, and a corresponding packet is allocated thereto. The location of the resource, allowing it to compete on the corresponding resource location. Moreover, the transmission process is not transmitted according to the normal data frame transmission process, but after the AP sends the trigger information, the packet service is sent at the corresponding transmission resource location in the process of reporting the information to the AP by the station. Go out, and not wait for the AP to send the trigger message again before sending it out.

S204. Compete on a resource location corresponding to the data frame.

S205: After successfully contending for the data frame for the data frame, send the data frame to the access point.

S206, the site withdraws from the competition.

According to a random competition method disclosed in Embodiment 2 of the present invention, when the service frame to be transmitted includes a data frame, the station receives the indication information sent by the access point and the packet length threshold of the packet transmission; Determining, by the resource location allocated by the different types of service frames, a resource location corresponding to the data frame; determining whether the length of the data frame is smaller than a packet length threshold of the packet transmission, and if so, causing the data frame to correspond to the data frame Competing on the resource location. Therefore, in the embodiment of the present invention, when the data frame to be transmitted includes a data frame, it is required to distinguish the packet service in the data frame, and allocate a corresponding resource location to the corresponding resource. Competing in position avoids the phenomenon that it competes with other service frames for transmission resources. The transmission efficiency of the packet service is improved, thereby improving the transmission efficiency of other service frames.

The foregoing embodiment of the present invention describes the random competition method of the present invention from the site side. Next, the random competition method of the present invention is described from the access point side. Referring to FIG. 7, another embodiment provided by Embodiment 3 of the present invention is provided. A flowchart of a stochastic contention method, the method being performed by an access point, the method comprising:

S310: The access point sends the indication information to the station.

Specifically, the access point in S301 sends the indication information to the station, where the indication information carries at least the resource location allocated in advance for different types of service frames, so that the station competes on the resource location corresponding to the service frame to be transmitted. The indication information further includes: a basic service set identity identifier, so that the site determines, according to the basic service set identity identifier carried in the indication information, whether the access point is in the same basic service set as the site, if And determining the resource location corresponding to the service frame to be transmitted according to the resource location allocated for the different types of service frames in the indication information, and if not, the site exits the competition.

It should be noted that before sending the indication information to the station, the method further includes: allocating different resource locations for different types of service frames according to service requests of different types of service frames.

Before the sending of the indication information to the station, the method further includes: estimating, according to the historical information, a resource size required for the transmission of the different types of service frames, and correspondingly, the indication information sent to the station further includes: pre-allocating for different types of service frames. Transmitting a resource size, so that the station adds a frame end flag and/or to the to-be-transmitted service frame that is transmitted on the corresponding transmission resource location, based on the transmission resource size allocated for the different types of service frames. Or the length information of the signal extension.

It should be noted that, when the data frame to be transmitted includes a data frame, the access point further sends a packet length threshold of the packet transmission to the station, so that the site distinguishes the packet service in the data frame, even if the site passes Determining the length to be transmitted by comparing the length of the data frame to be transmitted with the packet length threshold of the packet transmission Whether the data frame is a packet service, if it is determined that the length of the data frame is smaller than a packet length threshold of the packet transmission, determining that the data frame is a packet service, and assigning a corresponding resource location to the corresponding resource Compete in position.

S302: After the station successfully contends to the transmission resource for the to-be-transmitted service frame, the service frame to be transmitted sent by the station is received at the corresponding transmission resource location.

According to a random competition method disclosed in Embodiment 3 of the present invention, the indication information sent by the access point to the site carries at least the resource locations allocated in advance for different types of service frames, so that the sites are different types of services according to the indication information. a resource location of the frame allocation, determining a resource location corresponding to each of the service frames to be transmitted; causing the site to compete on a resource location corresponding to the service frame to be transmitted, and successfully competing for the transmission resource for the to-be-transmitted service frame Afterwards, the service frame to be transmitted is sent to the access point. That is, the technical solution of the embodiment of the present invention is that the access point pre-allocates different resource locations for different types of service frames, so that the site participates in the competition in the resource location corresponding to the service frame to be transmitted, instead of only in the AID. Participating in the competition at a resource location equal to 0 improves the probability of success of the site participating in random competition.

The method is described in detail in the foregoing embodiments of the present invention. The method of the present invention may be implemented in various forms. Therefore, the embodiment of the present invention further discloses a site, and a specific embodiment is described in detail below.

FIG. 8 is a schematic structural diagram of a site embodiment 4 according to an embodiment of the present disclosure, where the site specifically includes the following units:

The first receiving unit 11 is configured to receive the indication information that is sent by the access point, where the indication information includes at least a resource location that the access point allocates in advance for different types of service frames;

The determining unit 12 is configured to determine resource locations corresponding to the service frames to be transmitted according to resource positions allocated for different types of service frames in the indication information;

a competing unit 13 configured to compete on a resource location corresponding to the service frame to be transmitted;

The first sending unit 14 is configured to send a successfully competitive service frame to the access point after successfully competing for the transmission resource for the to-be-transmitted service frame.

It should be noted that the contention unit 13 is configured to perform backoff according to time in the resource location corresponding to the service frame to be transmitted according to the carrier sense multiple access CSMA competition mechanism with collision avoidance;

The first sending unit 14 is configured to send the service frame to be transmitted to the access point after confirming that the to-be-transmitted service frame successfully contends to a transmission resource;

or;

The contention unit 13 is configured to perform backoff according to a time-frequency resource block on a resource location corresponding to the service frame to be transmitted according to an ODCA competition mechanism;

The first sending unit 14 is configured to send the service frame to be transmitted to the access point after confirming that the to-be-transmitted service frame successfully contends to a transmission resource.

It is to be noted that the determining unit 12 is configured to obtain a basic service set identity identifier included in the indication information, and determine, according to the basic service set identity identifier, whether the access point is in the same basic service set as the site. If yes, the resource locations corresponding to the service frames to be transmitted are determined according to the resource locations allocated for the different types of service frames in the indication information; if not, the site exits the competition.

It should be noted that, when the data frame to be transmitted includes a data frame, the contention unit 13 includes:

Based on the foregoing apparatus, the embodiment of the present invention may also select a suitable unit from the following units to form a new site, and the specific composition manner may be determined according to the related description in the method embodiment, which is not repeatedly described in the embodiment of the present invention.

And an adding unit, configured to add a frame end flag to the to-be-transmitted service frame that is transmitted on the corresponding transmission resource location, based on the transmission resource size that is allocated in the instruction information and is allocated for different types of service frames. And/or length information of the signal extension.

An embodiment of the present invention further discloses another station, including: a memory for storing a random contention program, and a processor connected to the memory; the processor is configured to execute the random contention procedure, specifically receiving access The indication information sent by the point, the indication information at least the resource location allocated by the access point in advance for different types of service frames; determining the service to be transmitted according to the resource location allocated by the different types of service frames in the indication information Respecting a resource location corresponding to the frame; performing contention on the resource location corresponding to the service frame to be transmitted, and transmitting the to-be-transmitted to the access point after successfully competing for the transmission resource for the to-be-transmitted service frame Business frame.

A site disclosed in Embodiment 4 of the present invention, the site receives the indication information sent by the access point, where the indication information at least carries the resource location allocated by the access point for different types of service frames in advance; according to the indication information a resource location allocated for a different type of service frame, determining a resource location corresponding to each of the service frames to be transmitted; competing at the resource location corresponding to the service frame to be transmitted, and succeeding in the service frame to be transmitted After competing to the transmission resource, the service frame to be transmitted is sent to the access point. That is, the technical solution of the embodiment of the present invention is to allocate different resource locations for different types of service frames in advance, and the site participates in the competition in the resource location corresponding to the service frame to be transmitted, instead of only the AID is equal to 0. Participating in competition in resource locations increases the probability of success of sites participating in random competition.

The present invention also discloses an access point, and a specific embodiment will be described in detail below.

FIG. 9 is a schematic structural diagram of Embodiment 5 of an access point according to an embodiment of the present disclosure, where the access point specifically includes the following units:

a second sending unit 21, configured to send indication information to the station;

It should be noted that the indication information sent by the second sending unit 21 to the station carries at least a resource location allocated in advance for different types of service frames, so that the station competes on the resource location corresponding to the service frame to be transmitted. . The second sending unit is further configured to: send a packet length threshold of the packet transmission to the station.

The third receiving unit 22 is configured to: after the station successfully contends for the transmission resource for the to-be-transmitted service frame, receive the service frame to be transmitted sent by the station at a corresponding transmission resource location.

Based on the foregoing device, the embodiment of the present invention may also select a suitable unit from the following units to form a new site, and the specific composition manner may be determined according to the related description in the method embodiment, and the embodiment of the present invention does not Let me repeat.

An allocating unit, configured to allocate different resource locations for different types of service frames according to service requests of different types of service frames.

And an estimating unit, configured to estimate, according to the historical information, a resource size required for the transmission of different types of service frames, and correspondingly, the indication information sent by the second sending unit 21 to the station further includes: pre-allocating for different types of service frames. Transfer resource size.

An embodiment of the present invention further discloses another access point, including: a memory for storing a random contention program, and a processor connected to the memory; the processor is configured to execute the random contention program, specifically The station sends the indication information, where the indication information carries at least the resource location allocated for the different types of service frames, so that the site competes on the resource location corresponding to the service frame to be transmitted; After the transmission service frame successfully contends to the transmission resource, the service frame to be transmitted sent by the station is received at the corresponding transmission resource location.

It should be noted that the specific function implementation of each unit described above has been described in detail in the method embodiments, and details are not described in the device embodiments.

In addition, this embodiment also discloses a random contention system, including: a site as described above, and an access point as described above.

In summary:

The invention discloses a random competition method, a station, an access point and a system, and receives, by a station, indication information sent by an access point, where the indication information carries at least a resource location allocated by the access point in advance for different types of service frames. Determining, according to the resource locations allocated for the different types of service frames, the resource locations corresponding to the service frames to be transmitted; competing at the resource locations corresponding to the service frames to be transmitted, and After the transmission service frame successfully competes for the transmission resource, the service frame to be transmitted is sent to the access point. That is, the technical solution of the embodiment of the present invention is to allocate different resource locations for different types of service frames in advance, and the site participates in the competition in the resource location corresponding to the service frame to be transmitted, instead of only the AID is equal to 0. Participating in competition in resource locations increases the probability of success of sites participating in random competition.

Embodiments of the present invention also provide a computer program product for data processing, including storing a program generation A computer readable storage medium of code, the program code comprising instructions for performing the method flow described in any one of the foregoing method embodiments. A person skilled in the art can understand that the foregoing storage medium includes: a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a random access memory (RAM), a solid state disk (SSD), or a nonvolatile. A non-transitory machine readable medium that can store program code, such as a non-volatile memory.

It should be noted that the embodiments provided in the present application are merely illustrative. For example, the division of each component in the above embodiment may have another division manner in actual implementation. For example, multiple modules or components may be combined or integrated into another device, or some features may be omitted or not performed. In addition, the coupling or direct coupling or communication connection of the components shown or discussed may be through some communication interface, indirect coupling or communication connection of the modules, and may include electrical, mechanical, or other forms of connection.

It will be apparent to those skilled in the art that, for the convenience and brevity of the description, in the above embodiments, the description of each embodiment has its own emphasis, and the parts which are not described in detail in a certain embodiment can be referred to other implementations. A description of the example. Features disclosed in the embodiments of the invention, the claims, and the drawings may exist independently or in combination. Features described in hardware in the embodiments of the present invention may be implemented by software, and vice versa. There is no limit here.

Claims

A stochastic competition method, characterized in that it comprises:

The station receives the indication information sent by the access point, where the indication information at least carries the resource location allocated by the access point in advance for different types of service frames;

Determining, according to the resource locations allocated by the different types of service frames, the resource locations corresponding to the service frames to be transmitted;

Competing on the resource location corresponding to the service frame to be transmitted, and after successfully contending for the transmission resource for the to-be-transmitted service frame, sending the service frame to be transmitted to the access point.
The method according to claim 1, wherein when the data frame to be transmitted includes a data frame, the process of competing at a resource location corresponding to the service frame to be transmitted includes:

Receiving, by the station, a packet length threshold of the packet transmission sent by the access point;

Determining whether the length of the data frame is smaller than a packet length threshold of the packet transmission;

If yes, competing at a resource location corresponding to the data frame;

If no, the site withdraws from this competition.
The method according to claim 1 or 2, wherein the contention is performed on the resource location corresponding to the service frame to be transmitted, and after successfully competing for the transmission resource for the to-be-transmitted service frame, The process for the access point to send the service frame to be transmitted includes:

And performing the backoff according to the time of the resource location corresponding to the to-be-transmitted service frame, and confirming that the to-be-transmitted service frame successfully contends to the transmission resource, according to the CSMA contention mechanism with collision avoidance The access point sends the service frame to be transmitted;

Alternatively, according to the OFDM-based contiguous frequency-of-access-based contending contention ODCA competition mechanism, the time-frequency resource block is backed off at the resource location corresponding to the to-be-transmitted service frame, and the service frame to be transmitted is successfully confirmed. After competing to the transmission resource, the service frame to be transmitted is sent to the access point.
The method according to claim 1, wherein the process of determining resource locations corresponding to respective service frames to be transmitted according to the resource locations allocated for different types of service frames in the indication information comprises:

Obtaining a basic service set identity identifier included in the indication information, and determining, according to the basic service set identity identifier, whether the access point is in the same basic service set as the site;

If yes, determining resource locations corresponding to the service frames to be transmitted according to resource locations allocated for different types of service frames in the indication information;

If no, the site withdraws from this competition.
The method of claim 1 further comprising:

Adding a frame end flag and/or a signal extension to the to-be-transmitted service frame that is transmitted on the corresponding transmission resource location, respectively, based on the transmission resource size that is allocated in the instruction information for the different types of service frames. Length information.
A stochastic competition method, characterized in that it comprises:

The access point sends the indication information to the station, where the indication information carries at least the resource location allocated for the different types of service frames, so that the site competes on the resource location corresponding to the service frame to be transmitted;

After the station successfully contends to the transmission resource for the to-be-transmitted service frame, the service frame to be transmitted sent by the station is received at the corresponding transmission resource location.
The method according to claim 6, wherein before sending the indication information to the station, the method further comprises:

Different resource locations are assigned to different types of service frames according to service requests of different types of service frames.
The method of claim 6 further comprising: said access point transmitting a packet length threshold for packet transmission to said station.
The method according to claim 6, wherein before the sending the indication information to the station, the method further comprises:

And estimating, according to the historical information, the resource size required for the transmission of the different types of service frames, and correspondingly, the indication information sent to the station further includes: a transmission resource size allocated in advance for different types of service frames, so that the site is based on the The transmission resource size allocated for the different types of service frames is added, and the frame end flag and/or the length information of the signal extension are respectively added to the to-be-transmitted service frames that are transmitted on the respective corresponding transmission resource locations.
A site characterized by comprising:

The first receiving unit is configured to receive the indication information that is sent by the access point, where the indication information includes at least a resource location that the access point allocates in advance for different types of service frames;

a determining unit, configured to determine, according to the resource locations allocated for different types of service frames in the indication information, a resource location corresponding to each of the service frames to be transmitted;

a competition unit, configured to compete on a resource location corresponding to the service frame to be transmitted;

And a first sending unit, configured to send a successfully-competitive service frame to the access point after successfully contending for the transmission resource for the to-be-transmitted service frame.
The station according to claim 10, wherein when the data frame to be transmitted includes a data frame, the contention unit includes:

a second receiving unit, configured to receive a packet length threshold of the packet transmission sent by the access point;

a determining unit, configured to determine whether a length of the data frame is smaller than a packet length threshold of the packet transmission;

An execution unit, configured to: when the determining unit determines that the length of the data frame is smaller than a packet length threshold of the packet transmission, compete on a resource location corresponding to the data frame; otherwise, the station exits the current time. competition.
A station according to claim 10 or 11, wherein

The contention unit is configured to perform backoff according to time in the resource location corresponding to the service frame to be transmitted according to the CSMA competition mechanism;

The first sending unit is configured to send the service frame to be transmitted to the access point after confirming that the to-be-transmitted service frame successfully contends to a transmission resource;

or;

The contention unit is configured to perform backoff according to the time-frequency resource block on the resource location corresponding to the service frame to be transmitted according to the ODCA competition mechanism;

The first sending unit is configured to send the service frame to be transmitted to the access point after confirming that the to-be-transmitted service frame successfully contends to a transmission resource.
The station of claim 10 wherein:

The determining unit is configured to obtain a basic service set identity identifier included in the indication information, and determine, according to the basic service set identity identifier, whether the access point is in the same basic service set as the site; if yes, according to the The resource location allocated for different types of service frames in the indication information, The resource location corresponding to each of the service frames to be transmitted; if not, the site exits the competition.
The site of claim 10, further comprising:

And an adding unit, configured to add a frame end flag to the to-be-transmitted service frame that is transmitted on the corresponding transmission resource location, based on the transmission resource size that is allocated in the instruction information and is allocated for different types of service frames. And/or length information of the signal extension.
A site, comprising: a memory for storing a random contention program, and a processor connected to the memory;

The processor is configured to execute the random contention procedure, specifically, the indication information that is sent by the access point, where the indication information includes at least a resource location that the access point allocates in advance for different types of service frames; a resource location allocated for a different type of service frame, determining a resource location corresponding to each of the service frames to be transmitted; competing at the resource location corresponding to the service frame to be transmitted, and succeeding in the service frame to be transmitted After competing to the transmission resource, the service frame to be transmitted is sent to the access point.
An access point, comprising:

a second sending unit, configured to send the indication information to the station, where the indication information carries at least a resource location that is allocated in advance for different types of service frames, so that the station competes on a resource location corresponding to the service frame to be transmitted;

And a third receiving unit, configured to: after the station successfully contends for the transmission resource for the to-be-transmitted service frame, receive the to-be-transmitted service frame sent by the station at a corresponding transmission resource location.
The access point according to claim 16, further comprising: an allocating unit, configured to allocate different resource locations for different types of service frames according to service requests of different types of service frames.
The access point according to claim 16, wherein the second sending unit is further configured to: send a packet length threshold of the packet transmission to the station.
The access point according to claim 16, further comprising:

And an estimating unit, configured to estimate, according to the historical information, a resource size required for the transmission of the different types of service frames, and correspondingly, the indication information sent by the second sending unit to the station further includes: The size of the transmission resource allocated by the type of service frame.
An access point, comprising: a memory for storing a random contention program, and a processor connected to the memory;

And the processor is configured to send the indication information to the station, where the indication information carries at least a resource location that is allocated in advance for different types of service frames, so that the site corresponds to the service frame to be transmitted. After the site successfully competes for the transmission resource for the to-be-transmitted service frame, the site receives the service frame to be transmitted sent by the site at the corresponding transmission resource location.
A stochastic competition system characterized by comprising:

A station according to any of claims 10-15, and an access point according to any of claims 16-20.