CN105450330B

CN105450330B - Ascending transmission method, website, access point AP, communication system and management entity

Info

Publication number: CN105450330B
Application number: CN201410268034.9A
Authority: CN
Inventors: 杜振国; 丁志明; 树贵明
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2014-06-16
Filing date: 2014-06-16
Publication date: 2018-12-25
Anticipated expiration: 2034-06-16
Also published as: CN105450330A

Abstract

The present invention provides ascending transmission method, website, access point AP, communication system and management entity, this method comprises: site STA generates uplink frame, the uplink frame includes that robust uplink RUT indicates information, the RUT instruction information, which takes, indicates have the access point C-AP that cooperates of cooperation relation to receive the uplink frame with the associated association access point A-AP of the STA and with the A-AP when the first value, and makees RUT processing to the uplink frame；The RUT instruction information takes to indicate only to receive with the associated association access point A-AP of the STA and make non-RUT to the uplink frame when second value and handle；The STA sends the uplink frame.

Description

Uplink transmission method, station, Access Point (AP), communication system and management entity

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an uplink transmission method, a station, an access point AP, a communication system, and a management entity.

Background

With the evolution of the WLAN (Wireless Local Area Networks) standard, the current IEEE (Institute of Electrical and Electronics Engineers) 802.11 working group has begun the research and development work of the next generation WiFi (Wireless Fidelity) standard. The next-generation WiFi standard is called HEW (High Efficiency WLAN), the system capacity is improved to be more than 10Gbps, and the scenes of Carrier-grade WiFi and High-density WiFi are particularly concerned.

By carrier-level WiFi, it is meant the case where the WiFi network is deployed by a carrier or enterprise. The former is mainly deployed outdoors to realize hot spot area coverage; the latter is deployed inside an enterprise. The high-density WiFi includes two cases, i.e., a high-density AP (Access Point) and a high-density STA (Station). The former is that a large number of APs exist in a certain area, and are usually deployed by an operator or an enterprise, and certainly include the situation of personal deployment of residential area users; the latter is that the distribution density of the WiFi mobile terminal devices is extremely high in the hot spot area due to the dense people flow.

In the prior art, when an STA performs uplink transmission, only an associated a-AP (Association AP) receives and processes an uplink frame, and determines whether the uplink frame is successfully received.

However, outdoor wireless signal environments are variable, WiFi devices are densely distributed to cause strong inter-device interference, transmission performance of the WiFi devices is greatly reduced, especially outdoor uplink transmission is seriously affected, and by using the method in the prior art, reliability of uplink data transmission is low, so the method in the prior art cannot guarantee the uplink transmission performance; furthermore, the retransmission probability is increased, and the uplink transmission efficiency is reduced.

Disclosure of Invention

The invention provides an uplink transmission method, a station, an Access Point (AP), a communication system and a management entity, which are used for improving uplink transmission performance.

A first aspect of the present invention provides an uplink transmission method, including:

a station STA generates an uplink frame, wherein the uplink frame comprises robust uplink transmission RUT indicating information, and when the RUT indicating information takes a first value, the uplink frame is received by an associated access point A-AP (access point-to-access) associated with the STA and a cooperative access point C-AP (access point-to-access) having a cooperative relationship with the A-AP, and the RUT processing is carried out on the uplink frame; when the RUT indication information takes a second value, the method indicates that only the associated access point A-AP associated with the STA receives the uplink frame and carries out non-RUT processing on the uplink frame;

and the STA sends the uplink frame.

With reference to the first aspect, in a first possible implementation manner of the first aspect, before the STA generates the uplink frame, the method further includes:

the STA acquires the probability that an uplink frame before the uplink frame is correctly received by the A-AP, and when the probability is greater than a first threshold value, the STA sets the RUT indication information to be the second value; and/or

And the STA acquires the probability that the uplink frame before the uplink frame is correctly received by the A-AP, and when the probability is smaller than a second threshold value, the STA sets the RUT indication information to be the first value.

With reference to the first aspect, in a second possible implementation manner of the first aspect, before the STA generates the uplink frame, the method further includes:

the STA receives indication information sent by the A-AP, wherein the indication information is used for indicating whether the STA starts an RUT transmission mode; the STA sets the RUT indication information to the first value or the second value at least according to the indication information.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the indication information is located in a physical header preamble sequence or a medium access control MAC header of a downlink frame sent by the a-AP to the STA.

With reference to the second possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the RUT indication information and the indication information are represented by using the same indication bit in a physical header preamble sequence of a transmission frame.

With reference to the first aspect or any one of the second possible implementation manner of the first aspect to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the RUT indication information is located in a physical header preamble sequence of the uplink frame.

With reference to the first aspect or any one of the second possible implementation manner of the first aspect to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the STA, the a-AP, and the C-AP are managed by a same management entity; the A-AP establishes association with the STA, and the C-AP does not establish association with the STA.

With reference to the first aspect or any one of the second possible implementation manner of the first aspect to the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, before the STA transmits the uplink frame, the method further includes: the STA sends a request message for establishing a robust uplink transmission RUT to the A-AP; and the STA receives the response message sent by the A-AP.

With reference to the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, when the response message indicates that the RUT is established, the response message includes a first multicast address; the first multicast address is a target address of the uplink frame, and the first multicast address is used for: the C-AP can determine whether the STA is a legal user or not through the first multicast address.

With reference to the first aspect or any one of the second possible implementation manner of the first aspect to the seventh possible implementation manner of the first aspect, in a ninth possible implementation manner of the first aspect, a source address of the uplink frame is a MAC address of the STA, and a destination address is the MAC address of the a-AP or a first multicast address; the first multicast address is to: the C-AP can determine whether the STA is a legal user or not through the first multicast address.

With reference to the first aspect or any one of the second possible implementation manner of the first aspect to the seventh possible implementation manner of the first aspect, in a tenth possible implementation manner of the first aspect, the uplink frame includes identification information of a management entity to which the a-AP belongs.

A second aspect of the present invention provides an uplink transmission method, including:

an Access Point (AP) receives an uplink frame sent by a Station (STA), wherein the uplink frame comprises robust uplink transmission RUT indication information;

when the RUT indication information takes a first value, the AP carries out RUT processing on the uplink frame; wherein the AP comprises an associated access point A-AP associated with the STA and a cooperative access point C-AP having a cooperative relationship with the A-AP.

With reference to the second aspect, in a first possible implementation manner of the second aspect, when the RUT indication information takes a first value, before the AP performs RUT processing on the uplink frame, the method further includes:

the C-AP determines that a source address or a target address carried in the uplink frame exists in a cooperation list of the C-AP; or

And the C-AP determines that the identification of the management entity carried by the uplink frame is matched with the identification of the management entity to which the C-AP belongs.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the performing, by the AP, an RUT process on the uplink frame specifically includes:

the A-AP and the C-AP judge whether the uplink frame is received successfully or not; and if the uplink frame is successfully received, the A-AP or the C-AP forwards the uplink frame to a management entity to which the A-AP and the C-AP belong.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, when the uplink frame includes multiple fragments, the performing, by the AP, an RUT process on the uplink frame specifically includes:

the A-AP and the C-AP forward the plurality of fragments to a management entity to which the A-AP and the C-AP belong; or

The A-AP and the C-AP verify the plurality of fragments;

and the A-AP and the C-AP forward the fragments which are verified to be correct to a management entity to which the A-AP and the C-AP belong.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the performing, by the AP, an RUT process on the uplink frame specifically includes:

the A-AP and the C-AP forward undecoded uplink frames and received signal strength indication RSSI and/or signal to interference plus noise ratio SINR when receiving the uplink frames to a management entity to which the A-AP and the C-AP belong; wherein the undecoded uplink frame is a value of the uplink frame received by the A-AP and the C-AP before channel decoding.

With reference to the second aspect or any one of the first possible implementation manner to the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, before the access point AP receives an uplink frame sent by the station STA, the method further includes:

the A-AP receives a request message sent by the STA and used for establishing robust uplink transmission RUT;

the A-AP sends a cooperation request message to the C-AP;

the A-AP receives a cooperation response message sent by the C-AP;

the A-AP sends a response message to the STA.

With reference to the fifth possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, the cooperation request message includes a first multicast address, a MAC address of the STA, or a MAC address of the a-AP; the first multicast address is specifically a target address of the uplink frame.

With reference to the sixth possible implementation manner of the second aspect, in a seventh possible implementation manner of the second aspect, the method further includes:

the C-AP records the first multicast address, the MAC address of the STA or the MAC address of the A-AP in a cooperation list.

With reference to the second aspect or any one of the first possible implementation manner to the fifth possible implementation manner of the second aspect, in an eighth possible implementation manner of the second aspect, the method further includes:

and the C-AP records the MAC address of the A-AP in a cooperation list.

With reference to the second aspect or any one of the first possible implementation manner to the eighth possible implementation manner of the second aspect, in a ninth possible implementation manner of the second aspect, after the AP performs a RUT process on the uplink frame, the method further includes:

the A-AP sends a confirmation message used for indicating that the uplink frame is correctly received to the STA after a short interframe space (SIFS); or

All A-APs and/or C-APs which correctly receive the uplink frame simultaneously send confirmation messages for indicating that the uplink frame is correctly received to the STA after a short inter-frame space (SIFS); or

And the A-AP and/or the C-AP sends an acknowledgement message for indicating that the uplink frame is correctly received to the STA after obtaining the media transmission opportunity.

A third aspect of the present invention provides an uplink transmission method, including:

the management entity receives at least one copy of an uplink frame from a station STA forwarded by an associated access point A-AP and/or a cooperative access point C-AP; the A-AP is an access point associated with the STA, the C-AP is an access point having a cooperation relationship with the A-AP, the uplink frame comprises robust uplink transmission RUT indication information, the RUT indication information is a first value, and when the RUT indication information takes the first value, the A-AP associated with the STA and the C-AP having the cooperation relationship with the A-AP both receive the uplink frame and perform RUT processing on the uplink frame;

and the management entity performs merging processing on at least one copy of the uplink frame.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the merging, by the management entity, at least one duplicate of the uplink frame specifically includes:

when the at least one copy is decoded MAC layer data and does not contain multi-slices, the management entity selects any copy which is checked to be correct as a merged frame; or

When the uplink frame comprises a plurality of fragments, the management entity checks a plurality of fragment copies of each fragment respectively, and takes the correctly checked fragment copy as a merging result of each fragment; or

When the at least one replica is a replica which is not subjected to channel decoding, the management entity processes the at least one replica bit by bit according to a specific rule to obtain a merged frame.

A fourth aspect of the present invention provides a station STA, including:

a processing unit, configured to generate an uplink frame, where the uplink frame includes a robust uplink transmission RUT indication information, and when the RUT indication information takes a first value, it indicates that both an associated access point a-AP associated with the STA and a cooperative access point C-AP in a cooperative relationship with the a-AP receive the uplink frame, and perform RUT processing on the uplink frame; when the RUT indication information takes a second value, the method indicates that only the associated access point A-AP associated with the STA receives the uplink frame and carries out non-RUT processing on the uplink frame;

and the first sending unit is used for sending the uplink frame.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect,

the processing unit is further configured to obtain a probability that an uplink frame before the uplink frame is correctly received by the a-AP, and set the RUT indication information to the second value when the probability is greater than a first threshold; and/or

The processing unit is further configured to obtain a probability that an uplink frame before the uplink frame is correctly received by the a-AP, and set the RUT indication information to the first value when the probability is smaller than a second threshold.

With reference to the fourth aspect, in a second possible implementation manner of the fourth aspect, the STA further includes a first receiving unit,

the first receiving unit is used for receiving the indication information sent by the A-AP; the indication information is used for indicating whether the STA starts an RUT transmission mode;

the processing unit is further configured to set the RUT indication information to the first value or the second value according to at least the indication information.

With reference to the second possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the indication information is located in a physical header preamble sequence or a medium access control MAC header of a downlink frame sent by the a-AP to the STA.

With reference to the second possible implementation manner of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the RUT indication information and the indication information are represented by using the same indication bit in a physical header preamble sequence of a transmission frame.

With reference to the fourth aspect or any one of the second possible implementation manner of the fourth aspect to the fourth possible implementation manner of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the run indication information is located in a physical header preamble sequence of the uplink frame.

With reference to the fourth aspect or any one of the second possible implementation manner to the fifth possible implementation manner of the fourth aspect, in a sixth possible implementation manner of the fourth aspect, the STA, the a-AP, and the C-AP are managed by a same management entity; the A-AP establishes association with the STA, and the C-AP does not establish association with the STA.

With reference to the fourth aspect or any one of the second possible implementation manner of the fourth aspect to the sixth possible implementation manner of the fourth aspect, in a seventh possible implementation manner of the fourth aspect, the STA further includes:

a second sending unit, configured to send a request message for establishing a robust uplink transmission RUT to the a-AP;

and the second receiving unit is used for receiving the response message sent by the A-AP.

With reference to the seventh possible implementation manner of the fourth aspect, in an eighth possible implementation manner of the fourth aspect, when the response message indicates that the RUT is established, the response message includes a first multicast address; the first multicast address is a target address of the uplink frame, and the first multicast address is used for: the C-AP can determine whether the STA is a legal user or not through the first multicast address.

With reference to the fourth aspect or any one of the second possible implementation manner of the fourth aspect to the seventh possible implementation manner of the fourth aspect, in a ninth possible implementation manner of the fourth aspect, the source address of the uplink frame is a MAC address of the STA, and the destination address is the MAC address of the a-AP or the first multicast address; the first multicast address is to: the C-AP can determine whether the STA is a legal user or not through the first multicast address.

With reference to the fourth aspect or any one of the second possible implementation manner to the seventh possible implementation manner of the fourth aspect, in a tenth possible implementation manner of the fourth aspect, the uplink frame includes identification information of a management entity to which the a-AP belongs.

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

a receiving unit, configured to receive an uplink frame sent by a station STA, where the uplink frame includes robust uplink transmission RUT indication information;

a processing unit, configured to perform an RUT process on the uplink frame when the RUT indication information takes a first value; wherein the AP comprises an associated access point A-AP associated with the STA and a cooperative access point C-AP having a cooperative relationship with the A-AP.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the processing unit is further configured to: determining that a source address or a target address carried in the uplink frame exists in a cooperation list of the C-AP; or, determining that the identifier of the management entity carried by the uplink frame is matched with the identifier of the management entity to which the C-AP belongs.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the processing unit is specifically configured to: judging whether the uplink frame is received successfully or not; and if the uplink frame is successfully received, forwarding the uplink frame to the management entities of the A-AP and the C-AP.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, when the uplink frame includes multiple slices, the processing unit is specifically configured to: forwarding the plurality of fragments to a management entity to which the A-AP and the C-AP belong; or

Checking the plurality of fragments;

and forwarding the fragments which are verified to be correct to a management entity to which the A-AP and the C-AP belong.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, the processing unit is specifically configured to: forwarding un-decoded uplink frames and received signal strength indication RSSI and/or signal to interference plus noise ratio SINR when receiving the uplink frames to a management entity to which the A-AP and the C-AP belong; wherein the undecoded uplink frame is a value of the uplink frame received by the receiving unit before channel decoding.

With reference to the fifth aspect or any one of the first possible implementation manner to the fourth possible implementation manner of the fifth aspect, in a fifth possible implementation manner of the fifth aspect, when the AP is specifically the a-AP, the AP further includes a transmitting unit,

the receiving unit is further configured to receive a request message sent by the STA for establishing a robust uplink transmission RUT;

the sending unit is used for sending a cooperation request message to the C-AP;

the receiving unit is further configured to receive a cooperation response message sent by the C-AP;

the sending unit is further configured to send a response message to the STA.

With reference to the fifth aspect or any one of the first possible implementation manner to the fifth possible implementation manner of the fifth aspect, in a sixth possible implementation manner of the fifth aspect, when the AP is specifically a C-AP, the processing unit is further specifically configured to record a first multicast address, a media access control MAC address of the STA, or a media access control MAC address of the a-AP in a cooperation list.

With reference to the fifth aspect or any one of the first possible implementation manner to the sixth possible implementation manner of the fifth aspect, in a seventh possible implementation manner of the fifth aspect, the AP further includes a transmitting unit,

the sending unit is specifically configured to: sending a confirmation message for indicating that the uplink frame is correctly received to the STA after a short interframe space (SIFS); or

And sending an acknowledgement message for indicating that the uplink frame is correctly received to the STA after the medium transmission opportunity is obtained.

A sixth aspect of the present invention provides a communication system comprising:

the access point A-AP is associated and used for receiving an uplink frame sent by a station STA, and the uplink frame comprises robust uplink transmission RUT indication information; the A-AP is an associated access point of the STA;

the cooperative access point C-AP is used for receiving the uplink frame, and the C-AP is an access point which has a cooperative relationship with the A-AP;

wherein, when the RUT indication information takes a first value, both the A-AP and the C-AP are used for RUT processing of the uplink frame.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, when the RUT indication information takes a first value, the C-AP is further configured to:

determining that a source address or a target address carried in the uplink frame exists in a cooperation list of the C-AP; or

And determining that the identification of the management entity carried by the uplink frame is matched with the identification of the management entity to which the C-AP belongs.

With reference to the sixth aspect or the first possible implementation manner of the sixth aspect, in a second possible implementation manner of the sixth aspect, the a-AP and the C-AP are specifically configured to: judging whether the uplink frame is received successfully or not; and if the uplink frame is successfully received, forwarding the uplink frame to the management entities of the A-AP and the C-AP.

With reference to the sixth aspect or the first possible implementation manner of the sixth aspect, in a third possible implementation manner of the sixth aspect, when the uplink frame includes multiple fragments, the a-AP and the C-AP are specifically configured to:

forwarding the plurality of fragments to a management entity to which the A-AP and the C-AP belong; or

Checking the plurality of fragments;

With reference to the sixth aspect or the first possible implementation manner of the sixth aspect, in a fourth possible implementation manner of the sixth aspect, the a-AP and the C-AP are specifically configured to: forwarding un-decoded uplink frames and received signal strength indication RSSI and/or signal to interference plus noise ratio SINR when receiving the uplink frames to a management entity to which the A-AP and the C-AP belong; wherein the undecoded uplink frame is a value of the uplink frame received by the A-AP and the C-AP before channel decoding.

With reference to the sixth aspect or any one of the first possible implementation manner to the fourth possible implementation manner of the sixth aspect, in a fifth possible implementation manner of the sixth aspect, the a-AP is further configured to receive a request message sent by the STA for establishing a robust uplink transmission RUT; sending a cooperation request message to the C-AP; the C-AP is also used for receiving a cooperation response message sent by the C-AP; and transmits a response message to the STA.

With reference to the fifth possible implementation manner of the sixth aspect, in a sixth possible implementation manner of the sixth aspect, the cooperation request message includes a first multicast address, a MAC address of the STA, or a MAC address of the a-AP; the first multicast address is specifically a target address of the uplink frame.

With reference to the sixth possible implementation manner of the sixth aspect, in a seventh possible implementation manner of the sixth aspect, the C-AP is further configured to record the first multicast address, the MAC address of the STA, or the MAC address of the a-AP in a cooperation list.

With reference to the sixth aspect or any one of the first possible implementation manner to the sixth possible implementation manner of the sixth aspect, in an eighth possible implementation manner of the sixth aspect, the C-AP is further configured to record a media access control MAC address of the a-AP in a cooperation list.

With reference to the sixth aspect or any one of the first possible implementation manner to the eighth possible implementation manner of the sixth aspect, in a ninth possible implementation manner of the sixth aspect, when the uplink frame is correctly received,

the A-AP is also used for sending an acknowledgement message for indicating that the uplink frame is correctly received to the STA after a short interframe space (SIFS); or

All the A-APs and/or C-APs which correctly receive the uplink frame are also used for simultaneously sending confirmation messages for indicating that the uplink frame is correctly received to the STA after a short inter-frame space (SIFS); or

The A-AP and/or the C-AP are further used for sending an acknowledgement message for indicating that the uplink frame is correctly received to the STA after obtaining the media transmission opportunity.

With reference to the sixth aspect or any one of the first possible implementation manner to the ninth possible implementation manner of the sixth aspect, in a tenth possible implementation manner of the sixth aspect, the communication system further includes:

a management entity for receiving at least one copy of the uplink frame forwarded by the A-AP and/or the C-AP; at least one copy of the uplink frame is merged; wherein the A-AP and the C-AP are managed by the management entity.

With reference to the tenth possible implementation manner of the sixth aspect, in an eleventh possible implementation manner of the sixth aspect, the management entity is specifically configured to:

when the at least one copy is decoded MAC layer data and does not contain multi-slices, selecting any copy which is checked correctly as a merging frame; or

When the uplink frame comprises a plurality of fragments, respectively checking a plurality of fragment copies of each fragment, and taking the correctly checked fragment copy as a merging result of each fragment; or

And when the at least one copy is a copy which is not subjected to channel decoding, performing bit-by-bit processing on the at least one copy according to a specific rule to obtain a combined frame.

A seventh aspect of the present invention provides a management entity, comprising:

a receiving unit, configured to receive at least one copy of an uplink frame from a station STA forwarded by an association access point a-AP and/or a cooperative access point C-AP; the A-AP is an access point associated with the STA, the C-AP is an access point having a cooperation relationship with the A-AP, the uplink frame comprises robust uplink transmission RUT indication information, the RUT indication information is a first value, and when the RUT indication information takes the first value, the A-AP associated with the STA and the C-AP having the cooperation relationship with the A-AP both receive the uplink frame and perform RUT processing on the uplink frame;

and the processing unit is used for carrying out merging processing on at least one copy of the uplink frame.

With reference to the seventh aspect, in a first possible implementation manner of the seventh aspect, the processing unit is specifically configured to:

One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

in the embodiment of the invention, a station STA generates an uplink frame, the uplink frame comprises robust uplink transmission RUT indicating information, and when the RUT indicating information takes a first value, the uplink frame is received by an associated access point A-AP associated with the STA and a cooperative access point C-AP having a cooperative relation with the A-AP, and the RUT processing is carried out on the uplink frame; when the RUT indication information takes the second value, the access point A-AP only associated with the STA receives the RUT indication information and carries out non-RUT processing on the uplink frame; the STA transmits an uplink frame. Therefore, in the embodiment of the present invention, the STA may carry the RUT indication information in the uplink frame, and according to the difference of the values of the RUT indication information, the network side device, such as the a-AP and/or the C-AP, may perform different processing on the uplink frame, for example: when the RUT takes the second value, only the A-AP processes the uplink frame, so that the reliability of transmission can be ensured, and only the A-AP processes the uplink frame, so that the resources of the C-AP can be saved; when the RUT takes the first value, the A-AP and the C-AP can process the uplink frame and improve the probability that the uplink frame is correctly received, so the method of the invention can ensure the performance of uplink transmission, such as reliability and robustness; furthermore, the retransmission probability can be reduced, and the efficiency of uplink transmission is improved. Particularly for the environment with high-density WiFi equipment distribution, the uplink transmission performance can be improved by using the uplink transmission method in the embodiment of the invention, so that the interference among the equipment caused by the dense distribution of the equipment can be counteracted.

Drawings

Fig. 1 is a diagram of one possible communication system architecture in an embodiment of the present invention;

fig. 2 is a flowchart of an uplink transmission method at a station side according to an embodiment of the present invention;

fig. 3 is a schematic interaction diagram between network elements for establishing an RUT connection according to an embodiment of the present invention;

fig. 4 is a flowchart of an uplink transmission method at an access point side according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating a frame structure of slice transmission according to an embodiment of the present invention;

FIG. 6 is a functional block diagram of a station in an embodiment of the present invention;

FIG. 7 is an example conceptual diagram of a hardware implementation of a site in an embodiment of the invention;

FIG. 8 is a functional block diagram of an AP according to an embodiment of the present invention;

FIG. 9 is an exemplary conceptual diagram of a hardware implementation of an access point AP according to an embodiment of the invention;

FIG. 10 is a functional block diagram of a management entity in an embodiment of the present invention;

FIG. 11 is an example conceptual diagram of a hardware implementation of a management entity in an embodiment of the invention;

fig. 12 is a functional block diagram of a communication system in an embodiment of the present invention.

Detailed Description

The embodiment of the invention provides an uplink transmission method, a site, an Access Point (AP), a communication system and a management entity, which are used for improving uplink transmission performance.

In order to solve the technical problems, the technical scheme in the embodiment of the invention has the following general idea:

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, a possible communication system architecture applicable to the uplink transmission method in this embodiment is provided, where the communication system architecture includes: a management entity, configured to coordinate multiple APs (access points), and optionally, further configured to perform merging processing on data received by multiple APs; the plurality of APs comprise an A-AP (Association AP; Association access point) and a C-AP (Cooperative AP; cooperation access point), wherein the A-AP is an AP associated with an STA (Station; Station), the C-AP is an AP having a Cooperative relationship with the A-AP, and the STA and the C-AP do not establish an Association relationship. As shown in FIG. 1, the A-AP has two C-APs, C-AP1 and C-AP2, respectively.

It should be noted that the management entity is a logical concept, and in terms of physical implementation, the management entity may be an independent physical entity, or may be a logical module in a certain communication device, for example: the a-AP itself may also act as a management entity if there is a wired connection between the APs. The management entity may also be an AP controller, a mobility management entity, a gateway or central control server, etc.

Referring to fig. 2, a flowchart of an uplink transmission method in this embodiment is shown, where the method includes:

step 101: a station STA generates an uplink frame; the uplink frame comprises RUT (Robust uplink transmission) indication information, and when the RUT indication information takes a first value, the RUT indication information indicates that an associated access point A-AP associated with the STA and a cooperative access point C-AP having a cooperative relation with the A-AP both receive the uplink frame and carry out RUT processing on the uplink frame; when the RUT indication information takes the second value, the access point A-AP only associated with the STA receives the uplink frame and carries out non-RUT processing on the uplink frame;

step 102: the STA transmits an uplink frame.

Optionally, before the STA performs step 101, the method further includes: and the STA acquires the probability that the uplink frame before the uplink frame is correctly received by the A-AP, and when the probability is greater than a first threshold value, the STA sets the RUT indication information to be a second value. And/or the presence of a gas in the gas,

and the STA acquires the probability that the uplink frame before the uplink frame is correctly received by the A-AP, and when the probability is less than a second threshold value, the STA sets the RUT indication information to be a first value.

For example, the STA may calculate the probability that the previous uplink frame is correctly received by the a-AP by itself, or the a-AP may calculate the probability that the uplink frame is correctly received, and then the STA acquires the probability from the a-AP.

In general, the first threshold may be set according to the requirement for transmission performance, if the requirement for transmission performance is high, the first threshold may be set higher, for example, to 90%, and if the requirement for transmission performance is low, the first threshold may be set lower, for example, to 70%. When the probability is greater than the first threshold, it indicates that only the a-AP processes the uplink frame, and the probability that the uplink frame is correctly received is high, so the RUT indication information is set to the second value, which can ensure the uplink transmission performance and save the resources of the C-AP.

The setting of the second threshold value can also be generally set according to the requirements for transmission performance. When the probability is smaller than the second threshold, it indicates that only the a-AP processes the uplink frame, and the probability that the uplink frame is correctly received is low, so that the probability of retransmission of the STA is increased, and therefore, the STA can set the RUT indication information to the first value at this time, so that both the a-AP and the C-AP receive and process the uplink frame, thereby improving the probability that the uplink frame is correctly received and ensuring the transmission performance.

It should be noted that, in setting the first threshold and the second threshold, to prevent the ping-pong effect, for example, the first threshold and the second threshold are both thr0, when the correct reception probability fluctuates around thr0, the STA will ping-pong switch back and forth between enabling and disabling the RUT mode. Therefore, normally, the first threshold and the second threshold are set to different values, and the first threshold is equal to or greater than the second threshold, for example: the first threshold is thr0+ Δ and the second threshold is thr0- Δ.

In the above embodiment, it is described that the probability that the previous uplink frame is correctly received is calculated, and then the magnitude between the probability and the threshold is compared, thereby determining whether to set the value of the RUT indication information to the first value or the second value; however, in practical applications, it is also possible to calculate the probability that the previous uplink frame is not correctly received, and then compare the probability with a threshold, for example: the STA acquires the probability that the uplink frame before the uplink frame is not correctly received by the A-AP, and when the probability is smaller than a third threshold value, the STA sets the RUT indication information to be a second value; when the probability is greater than a fourth threshold, the STA sets the RUT indication information to a first value. Typically, the fourth threshold is equal to or greater than the third threshold.

In practical applications, whether to turn on or off the RUT transmission mode may be determined by considering RSSI (Received Signal Strength Indication), SINR (Signal to Interference plus Noise Ratio), or retransmission rate of an uplink frame.

Wherein, the retransmission rate can be calculated by the following method: in the first mode, the STA successfully transmits m different frames, wherein n (n is less than or equal to m) frames are successfully transmitted through retransmission, the retransmission rate is n/m, and the transmission success rate is (m-n)/m; or the second mode, the STA successfully transmits m different frames in total, wherein the transmission frequency (transmission + retransmission) of each frame is a_i(i 1, … m), the retransmission rate is (Σ a)_i-m)/∑a_iThe transmission success rate is m/a_i。

The probability of direct correct reception, the probability of erroneous reception may be defined as: the network side correctly receives m uplink frames through an RUT mechanism, wherein n (n is less than or equal to m) frames are directly and correctly received by the A-AP, the probability of direct and correct reception is n/m, and the probability of incorrect reception is (m-n)/m.

Optionally, before step 101, the method further includes: the STA receives indication information sent by the A-AP, wherein the indication information is used for indicating whether the STA starts an RUT transmission mode or not;

the STA sets the RUT indication information to a first value or a second value at least according to the indication information.

The STA receives the indication information sent by the a-AP, and specifically, the a-AP calculates a probability of correctly receiving the uplink frame of the STA, and sends the indication information to the STA when the probability is greater than a first threshold. Or the a-AP sends indication information to the STA according to other conditions.

For example, when the STA receives the indication information and the indication information is a third value, the STA sets the RUT indication information to a second value.

Or when the STA receives the indication information sent by the A-AP and the indication information is a fourth value, the STA sets the RUT indication information to be a first value or a second value.

For the second case, the a-AP may set the indication information to a fourth value to indicate that the STA may turn on the RUT transmission mode, and at this time, the STA may decide whether to turn on the RUT transmission mode by itself, so the RUT indication information may be set to the first value or may be set to a second value, and when the STA decides by itself, the STA may refer to the number of surrounding APs, for example, the STA detects that there are few surrounding APs and there may not be a C-AP associated with the a-AP, and at this time, the RUT indication information may be set to the second value.

Of course, when the indication information is the fourth value, it may also indicate that the STA is required to turn on the RUT transmission mode, so that the STA sets the value of the RUT indication information to the first value at this time.

A preferred scheme is that the decision to enable the RUT is made by the STA because it is easier for the STA to accurately determine the rate of retransmission of the uplink frame, and the decision to turn off the RUT is made by the a-AP because it is easier for the a-AP to accurately determine the probability of whether the uplink frame was received correctly and directly by itself.

Optionally, the RUT indication information is located in a physical header preamble sequence of the uplink frame. For example: is located in the sig (signal) domain, i.e., the signal domain, of the upstream frame. In practical applications, the RUT indication information may also be located in the service domain.

Optionally, the indication information may be located in a physical header preamble sequence or a MAC (Media Access Control) header of a downlink frame sent by the a-AP to the STA.

Alternatively, the RUT indication information and the indication information may be represented by the same indication bit in the physical header preamble sequence of the transmission frame, and for convenience of description, the same indication bit is referred to as a first indication bit. Further, in this case, the physical header may further include an indication bit indicating uplink/downlink, which is referred to as a second indication bit for convenience of description. When the second indication bit represents an uplink frame, the first indication bit represents that the STA enables/disables the RUT transmission mode; when the second indication bit indicates a downlink frame, the first indication bit indicates that the a-AP requires the STA to turn on/off the RUT transmission mode.

In a further embodiment, prior to step 102, the method further comprises: the STA sends a request message for establishing the robust uplink transmission RUT to the A-AP, and the STA receives a response message sent by the A-AP. The response message may be used to indicate that the RUT is established, or may be used to indicate that the RUT is failed to be established.

Specifically, referring to fig. 3, in order to establish an interactive map between network elements in the process of an RUT transmission mode, first, the STA transmits a request message for establishing an RUT to the a-AP (step ①), the a-AP transmits an RUT cooperation request to the C-AP through the management entity after receiving the request message (steps ② and ③), and when the a-AP receives a cooperation response indicating confirmation from the C-AP (steps ④ and ⑤), replies an RUT established response message to the STA, and accordingly, the STA receives a response message indicating that an RUT has been established, which is transmitted from the a-AP (step ⑥).

Optionally, the request message may include a list of neighboring APs of the STA, that is, the STA may listen to APs in its vicinity in advance, and then may report the list of APs to the a-AP in the request message, or may report the list of APs using a special management frame, which is helpful for the a-AP to select the C-AP more accurately.

Optionally, the request message further includes a MAC address of the STA, and the a-AP also forwards the MAC address to the C-AP in the cooperation request, so that after the C-AP confirms the cooperation relationship, the MAC address may be added to a local cooperation list, and when a subsequent C-AP receives an uplink frame including the RUT indication information, it may be determined whether the STA having the cooperation relationship with itself transmits the uplink frame through the MAC address in the cooperation list.

Of course, another possible implementation is: the A-AP carries the first multicast address or the MAC address of the A-AP in the cooperation request, and then the C-AP records the first multicast address or the MAC address of the A-AP on the cooperation list after confirming the cooperation relationship. In this case, the a-AP may transmit the first multicast address to the STA in a response message transmitted to the STA indicating that the RUT is established. Subsequently, the first multicast address may be used as a target address of the upstream frame, and the first multicast address is used for: the C-AP can determine whether the STA is a legal user or not through the first multicast address.

If the MAC address of the STA is used, when the uplink frame is generated in step 101, the source address of the uplink frame may be set as the MAC address of the STA, which is convenient for the C-AP to determine.

If the first multicast address or the MAC address of the a-AP is used, when the uplink frame is generated in step 101, the target address of the uplink frame may be set as the first multicast address or the MAC address of the a-AP, and when the C-AP receives the uplink frame, the target address is compared with the address in the cooperation list to determine whether the uplink frame needs to be processed.

The MAC Address of the STA may be carried in a TA (Transmitter Address) field of the uplink frame, and the MAC Address of the first multicast Address or the a-AP may be carried in an RA (Receiver Address) field of the uplink frame.

Optionally, when the STA generates the uplink frame in step 101, the uplink frame includes the identifier information of the management entity to which the a-AP belongs, so that the C-AP can determine whether the STA is a valid user. The identification information may be represented by an HESSID (homogeneous Extended Service Set Identifier) in WiFi, and the identification information may be carried in a MAC header portion or a payload portion of the uplink frame, for example, included in a third address field of the MAC header.

After step 102, the STA transmits an uplink frame, and receives an acknowledgement message from the a-AP and/or the C-AP informing the STA that the uplink frame was correctly received, if the uplink frame was correctly received. The specific implementation of this section will be described in detail in the following description of the implementation of the uplink transmission method on the AP side.

Referring to fig. 4, a flowchart of an uplink transmission method at the AP side is shown. The method comprises the following steps:

step 201: an AP receives an uplink frame sent by an STA, wherein the uplink frame comprises RUT indicating information;

step 202: the AP carries out RUT processing on the uplink frame; the AP comprises an association access point A-AP associated with the STA and a cooperation access point C-AP having a cooperation relation with the A-AP.

Optionally, when the RUT indication information takes the second value, the AP is an associated access point a-AP associated with the STA, and only the a-AP performs non-RUT processing on the uplink frame.

The non-RUT processing may be performed on the uplink frame by using a method in the prior art, for example: decoding the received uplink frame; judging whether the frame is correctly received according to the frame check sequence, if so, sending a confirmation message or not to the STA according to a confirmation strategy; if the uplink frame is received in error, the uplink frame is discarded.

In this embodiment, the AP may be an a-AP, or may include an a-AP and a C-AP, and for the case of including a C-AP, the number of C-APs is not limited, and may be 1, two, or three or more, and the number of C-APs may be set according to actual requirements.

Optionally, when the RUT indication information takes a first value, before step 202, the method further includes: the C-AP determines that a source address or a target address carried in the uplink frame is located in a cooperation list of the C-AP; or the C-AP determines that the identification of the management entity to which the STA belongs, carried by the uplink frame, is matched with the identification of the management entity to which the C-AP belongs.

As described above in the description of the uplink transmission method on the STA side, the source address or the destination address may be carried in the uplink frame, and these addresses may be recorded in the cooperation list when the RUT transmission is established, so that the C-AP may compare the source address or the destination address with the address record in the cooperation list, and if the C-AP is located in the cooperation list, it may be determined that the STA is a cooperative AP of the a-AP of the STA, that is, the STA is a valid user, and therefore the uplink frame is to be processed.

As described above, the uplink frame may also carry the identification information of the management entity to which the a-AP belongs, so that the C-AP may determine whether the STA is a valid user by determining whether the identification of the management entity carried by the uplink frame matches the identification of the management entity to which the C-AP belongs, and if the STA is a valid user, the C-AP may determine that the STA is a cooperative AP of the a-AP of the STA, so that the uplink frame is to be processed. For example: the identity of the management entity is denoted by HSEEID and is carried in the third address field of the upstream frame, then the C-AP resolves that the third address field should be HESSID, instead of BSSID (Basic service set Identifier; Basic service set identity) of the legacy WLAN. The method can accelerate the legality judgment processing, and the AP does not need to maintain a cooperation list.

The validity of the STA is judged through the cooperation list, and one possible implementation manner is as follows: all A-APs receive the association of the STA and distribute the associated information to all APs under the same management entity through the management entity, each AP establishes a cooperation list based on the associated information, and the C-AP can judge the validity of the STA through the list.

Another possible implementation is: the management entity distributes the MAC addresses of all the APs managed by the management entity to all the APs, and each AP maintains a cooperation list consisting of the MAC addresses of the APs according to the MAC addresses. In other words, the C-AP records the MAC address of the a-AP in a cooperation list, and the C-AP can determine the validity of the STA through the cooperation list. For example: when the C-AP receives an uplink frame and the RUT indication information of the uplink frame is a first value, if the Address 1(Address1) field of the uplink frame is matched with an Address in the self cooperation list, RUT processing is carried out on the uplink frame.

Normally, when the STA is a legal user, the AP performs the RUT processing, so that it is avoided that a malicious STA intentionally transmits an uplink frame with the RUT indication information of the first value, so that the AP performs the RUT processing without stopping and processing normal traffic. Meanwhile, the AP can more accurately judge which RUT uplink frames need to be processed by the AP, so that resource waste caused by unnecessary frame processing is avoided. Further, the AP can screen and intercept malicious data frames, and influence on a management entity is avoided.

Next, an implementation process of step 202 is described, where in a first possible implementation manner, step 202 specifically includes: the A-AP and the C-AP judge whether the uplink frame is successfully received; and if the uplink frame is successfully received, the A-AP or the C-AP forwards the uplink frame to a management entity to which the A-AP and the C-AP belong.

Specifically, after decoding the received uplink Frame, the a-AP and the C-AP determine whether the reception is correct according to an FCS (Frame check sequence) field in the uplink Frame, and if the reception is correct, forward the received uplink Frame to the management entity. When at least one of the A-AP and the C-AP decodes correctly, the uplink transmission is successful. In this implementation, the decision whether the uplink frame was received correctly is made by the AP itself.

In a second possible implementation manner, the uplink frame includes a plurality of segments, for example, the uplink frame is transmitted by using a Mid-Cyclic Redundancy Check (Mid-CRC) mechanism, where the Mid-CRC mechanism is to divide the transmission frame into a plurality of segments, and each segment is added with a CRC (Cyclic Redundancy code) field, so that each segment can independently judge whether the reception is correct, and a structure of the transmission frame of the Mid-CRC mechanism is as shown in fig. 5. Step 202 specifically includes: the A-AP and the C-AP forward the plurality of fragments to a management entity to which the A-AP and the C-AP belong.

Or the A-AP and the C-AP verify the plurality of fragments; the A-AP and the C-AP forward the fragments which are verified to be correct to a management entity to which the A-AP and the C-AP belong.

In the case that the AP itself is not verified but directly forwarded to the management entity, the work of fragment verification is completed by the management entity, and a detailed verification process will be described later.

And for the condition that the AP completes the verification, each AP verifies each fragment through the CRC domain, and only forwards the fragment which is verified correctly to the management entity. For example: for an uplink frame with three fragments, the result of the a-AP check is that fragment 1 is correctly received, the result of the C-AP1 check is that fragment 2 is correctly received, and the result of the C-AP2 check is that both fragment 2 and fragment 3 are correctly received, so that the a-AP forwards the successfully verified fragment 1 to the management entity, the C-AP1 forwards the successfully verified fragment 2 to the management entity, and the C-AP2 forwards the successfully verified fragment 2 and fragment 3 to the management entity. When the management entity receives each successfully verified fragment, the fragments are merged, and all the fragments are found to have successfully verified copies, so that the judgment that the uplink frame is correctly received can be made.

In a third possible implementation manner, step 202 specifically includes: the A-AP and the C-AP forward the undecoded uplink frame and the received signal strength indication RSSI and/or the signal to interference plus noise ratio SINR when receiving the uplink frame to a management entity to which the A-AP and the C-AP belong; wherein the undecoded uplink frame is a value of the uplink frame received by the A-AP and the C-AP before channel decoding. How the management entity performs the merging will be described later.

Optionally, before step 201, the method further includes: the method comprises the steps that A-AP receives a request message sent by STA and used for establishing robust uplink transmission RUT; the A-AP sends a cooperation request message to the C-AP; the A-AP receives a cooperation response message sent by the C-AP; the a-AP sends a response message to the STA. Please refer to fig. 3 and the related description.

Similarly, the first multicast address, the MAC address of the STA, or the MAC address of the a-AP may be included in the cooperation request message.

Alternatively, the C-AP may record the first multicast address, the MAC address of the STA, or the MAC address of the A-AP in the cooperation list.

The STA may set the source address of the uplink frame to the MAC address of the STA, or set the destination address to the first multicast address or the MAC address of the a-AP, which facilitates the C-AP to make the determination.

After step 202, the method further comprises: when the uplink frame is correctly received, the a-AP and/or the C-AP transmit an acknowledgement message to the STA indicating that the uplink frame is correctly received.

In practical applications, there are various embodiments for sending the acknowledgement message, and three possible implementations are described below, but not limited to these three implementations.

A first possible implementation: immediately confirmed by the a-AP. Generally, when the C-AP is within a certain time after receiving the uplink frame, it can complete: the uplink frame is processed on the C-AP or the management entity, and the result is informed to the A-AP, and the A-AP finishes the preparation work of sending. At this point, the acknowledgement message may be sent by the A-AP after a certain time, typically SIFS (Short Interframe Space). This approach is applicable to the three processing approaches in step 202.

A second possible implementation: multiple APs cooperate to acknowledge. When the processing result is not enough to be informed to the A-AP in the SIFS, all the A-APs and/or the C-APs which correctly receive the uplink frame can simultaneously send the confirmation message after the SIFS. Preferably, the method is applied to the first possible implementation manner of the foregoing step 202. Of course, the scheme is applicable to the situation that the processing result can be informed to the A-AP within the SIFS time, so that the transmission reliability of the confirmation message frame can be enhanced. Therefore, the method is also applicable to the other two possible implementations in step 202.

A third possible implementation: the acknowledgement is delayed. When it is difficult for the network side to complete data processing within SIFS time and prepare a message of the acknowledgement message, the network side may need to transmit the acknowledgement message after a longer time. At this time, after the network side, i.e. the AP or the management entity, correctly receives the uplink frame, it replies an acknowledgement message after obtaining the media transmission opportunity next time. Among them, in WiFi, an AP occupies a period of time and a channel to transmit, and such resources are called media transmission opportunities, media, i.e., channels. And the medium transmission opportunity can be obtained by means of contention or uniform scheduling of the AP. Here, after receiving the uplink frame, the AP will attempt to acquire a new media transmission opportunity, and once acquired, may send an acknowledgement message. For the STA, after step 102, wait for an RUT timeout period, and if an acknowledgement message is not received after this time, attempt retransmission. Preferably, the RUT timeout period is greater than an existing ACK timeout period.

Next, an uplink transmission method of the present invention will be described from the management entity side, the method including: the management entity receives at least one copy of an uplink frame from a station STA forwarded by an associated access point A-AP and/or a cooperative access point C-AP; the method comprises the steps that an A-AP is an access point associated with an STA, a C-AP is an access point having a cooperative relation with the A-AP, an uplink frame comprises robust uplink transmission RUT indicating information, and the RUT indicating information is a first value; the management entity performs a combining process on at least one copy of the uplink frame. When the RUT indication information takes the first value, the associated access point A-AP associated with the STA and the cooperative access point C-AP having a cooperative relation with the A-AP both receive the uplink frame and perform RUT processing on the uplink frame.

Corresponding to the different embodiments in step 202, the management entity has different processing manners, and for the first possible embodiment of step 202, the management entity selects any duplicate that is checked to be correct as the merged frame. If all correct copies come from the C-AP, the management entity may also send a notification message to the a-AP that the uplink frame was correctly received. The notification message may include information such as MAC address, frame type, sequence number, etc. of the STA.

Corresponding to the second possible implementation manner of step 202, if the AP does not check the fragment and directly forwards the multiple fragments to the management entity, the management entity checks multiple fragment copies of each fragment and takes the correctly checked fragment copy as the merging result of each fragment. Specifically, when at least one of the copies of the same fragment is checked correctly, the copy of the fragment checked correctly is used as the merging result of the fragment, and when all the fragments have the copy checked correctly, the uplink frame is received correctly.

When the AP forwards the fragments with correct verification to the management entity, the management entity judges whether all the fragments receive the fragments with correct verification, and if so, the uplink frame is correctly received.

Corresponding to the third possible implementation manner of step 202, the AP does not perform channel decoding after receiving the uplink frame, but directly forwards the uplink frame to the management entity. Meanwhile, the AP also sends the RSSI (Received Signal Strength Indication) or SINR (Signal to Interference noise Ratio) when receiving the uplink frame to the AP controller; the management entity processes at least one copy bit by bit according to a specific rule to obtain a merged frame. And then, carrying out channel decoding on the merged frame, and judging whether the decoded frame is analyzed correctly according to the frame check sequence field.

Specifically, the merged frame is obtained by processing bit by bit according to a specific rule, and a specific implementation method is as follows: assuming that the k-th bit value of the ith replica of the uplink frame is H (k, i), and N replicas are total, the calculated value of the k-th bit of the ith replica is H (k, i)Wherein,and the value of the corresponding weighting factor depends on RSSI or SINR, N is an integer greater than or equal to 2, i is an integer between 1 and N, k is a positive integer, and the maximum value of k depends on the frame length of the uplink frame.

The final value of the k bit of the uplink frame is determined according to the following rule:wherein,representing the value of the k bit after combination. In this case, the decision whether the upstream frame is received correctly is made by the management entity.

Optionally, the uplink frame is an uplink management frame or a data frame, and if the SIFS time is sufficient to complete the reception processing and the information transfer from the C-AP to the a-AP, the RUT mechanism may also be used for the control frame; or to a control frame for a non-frame interaction sequence initial frame, such as: CTS (Clear to Send; Clear request), HT-delayed Block Ack (high throughput delayed block Acknowledgement) frame, Data (+) CF-Ack (Contention-free Acknowledgement)/QoS (Quality of Service) Data (+) CF-Ack, etc.

It should be noted that, in the above description, the expressions "correct reception", "successful reception", and "successful reception" are the same, and all the expressions are that the uplink frame or the copy or the slice is correctly received. The same applies below.

As can be seen from the above description, in the embodiment of the present invention, an STA may carry RUT indication information in an uplink frame, and according to a difference in a value of the RUT indication information, a network side device, such as an a-AP and/or a C-AP, may perform different processing on the uplink frame, for example: when the RUT takes the second value, only the A-AP processes the uplink frame, so that the reliability of transmission can be ensured, and only the A-AP processes the uplink frame, so that the resources of the C-AP can be saved; when the RUT takes the first value, the A-AP and the C-AP can process the uplink frame and improve the probability that the uplink frame is correctly received, so the method of the invention can ensure the performance of uplink transmission, such as reliability and robustness; furthermore, the retransmission probability can be reduced, and the efficiency of uplink transmission is improved. Particularly for the environment with high-density WiFi equipment distribution, the uplink transmission performance can be improved by using the uplink transmission method in the embodiment of the invention, so that the interference among the equipment caused by the dense distribution of the equipment can be counteracted.

Based on the same inventive concept, another embodiment of the present invention provides a Station (Station; STA for short), and fig. 6 is a functional block diagram of the STA. The meanings and specific implementations of terms related to the station shown in fig. 6 can be referred to in the foregoing fig. 1 to 5 and the related description of the embodiments.

Referring to fig. 6, the STA includes: a processing unit 301, configured to generate an uplink frame, where the uplink frame includes RUT indication information for robust uplink transmission, and when the RUT indication information takes a first value, it indicates that both an associated access point a-AP associated with the STA and a cooperative access point C-AP having a cooperative relationship with the a-AP receive the uplink frame, and perform RUT processing on the uplink frame; when the RUT indication information takes the second value, the access point A-AP only associated with the STA receives the uplink frame and carries out non-RUT processing on the uplink frame; a first sending unit 302, configured to send the uplink frame.

Optionally, the processing unit 301 is further configured to obtain a probability that an uplink frame before the uplink frame is correctly received by the a-AP, and set the RUT indication information to a second value when the probability is greater than a first threshold; and/or

The processing unit 301 is further configured to obtain a probability that an uplink frame before the uplink frame is correctly received by the a-AP, and set the RUT indication information to a first value when the probability is smaller than a second threshold.

Optionally, the STA further comprises a first receiving unit,

the first receiving unit is used for receiving the indication information sent by the A-AP; the indication information is used for indicating whether the STA starts the RUT transmission mode; the processing unit 301 is further configured to set the RUT indication information to a first value or a second value at least depending on the indication information.

Further, the indication information is located in a physical header preamble sequence or a medium access control MAC header of a downlink frame sent by the a-AP to the STA.

Alternatively, the RUT indication information and the indication information are represented by the same indication bit in a physical header preamble sequence of the transmission frame.

In conjunction with the above embodiments, the RUT indication information is located in the physical header preamble sequence of the uplink frame.

With the above embodiments, the STA, the A-AP and the C-AP are managed by the same management entity; the A-AP establishes association with the STA, and the C-AP does not establish association with the STA.

In combination with the above embodiments, the STA further includes:

a second transmitting unit, configured to transmit a request message for establishing a robust uplink transmission RUT to the a-AP; and the second receiving unit is used for receiving the response message sent by the A-AP.

Further, when the response message is used to indicate that the RUT is established, the response message includes the first multicast address. The first multicast address is a target address of the uplink frame, and the first multicast address is used for: the C-AP can determine whether the STA is a legal user or not through the first multicast address.

Further, with reference to the above embodiments, the source address of the uplink frame is the MAC address of the STA, and the destination address is the MAC address of the a-AP or the first multicast address. The first multicast address is for: the C-AP can determine whether the STA is a legal user or not through the first multicast address.

Further, with reference to the foregoing embodiments, the uplink frame includes identification information of a management entity to which the a-AP belongs.

Further, in combination with the above embodiments, the STA further includes: and a third receiving unit, configured to receive an acknowledgement message from the a-AP and/or the C-AP for notifying the STA that the uplink frame is correctly received.

Various changes and specific examples in the uplink transmission method in the foregoing embodiment in fig. 2 are also applicable to the station in this embodiment, and a person skilled in the art can clearly know the implementation method of the station in this embodiment through the foregoing detailed description of the uplink transmission method, so for the brevity of the description, detailed descriptions are not provided here.

Fig. 7 is a conceptual diagram of an example of hardware implementation of a station in the present embodiment. The station includes: a processor 401, configured to generate an uplink frame, where the uplink frame includes RUT indication information for robust uplink transmission, and when the RUT indication information takes a first value, it indicates that both an associated access point a-AP associated with an STA and a cooperative access point C-AP having a cooperative relationship with the a-AP receive the uplink frame, and perform RUT processing on the uplink frame; when the RUT indication information takes the second value, the access point A-AP only associated with the STA receives the uplink frame and carries out non-RUT processing on the uplink frame; a transmitter 402, configured to transmit an uplink frame.

Optionally, the processor 401 is further configured to obtain a probability that an uplink frame before the uplink frame is correctly received by the a-AP, and set the RUT indication information to a second value when the probability is greater than a first threshold; and/or

The processor 401 is further configured to obtain a probability that an uplink frame before the uplink frame is correctly received by the a-AP, and set the RUT indication information to a first value when the probability is smaller than a second threshold.

Optionally, the STA further comprises a receiver 403,

the receiver 403 is configured to receive indication information sent by the a-AP; the indication information is used for indicating whether the STA starts the RUT transmission mode; the processor 401 is further configured to set the RUT indication information to a first value or a second value at least according to the indication information.

In conjunction with the above embodiments, the transmitter 402 is further configured to transmit a request message for establishing a robust uplink transmission RUT to the a-AP; the receiver 403 is further configured to receive a response message sent by the a-AP.

With reference to the foregoing embodiments, the source address of the uplink frame is the MAC address of the STA, and the destination address is the MAC address of the a-AP or the first multicast address. The first multicast address is for: the C-AP can determine whether the STA is a legal user or not through the first multicast address.

With reference to the foregoing embodiments, the uplink frame includes identification information of a management entity to which the a-AP belongs.

In conjunction with the above embodiments, the receiver 403 is further configured to receive an acknowledgement message from the a-AP and/or the C-AP for notifying the STA that the uplink frame is correctly received.

Where in fig. 7 a bus architecture (represented by bus 400), bus 400 may include any number of interconnected buses and bridges, bus 400 linking together various circuits including one or more processors, represented by processor 401, and memory, represented by memory 404. The bus 400 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface 405 provides an interface between the bus 400 and the receiver 403 and transmitter 402. The receiver 403 and the transmitter 402 may be the same element, i.e., a transceiver, providing a means for communicating with various other apparatus over a transmission medium. Depending on the nature of the user device, a user interface 406 may also be provided, such as a keypad, a display, a speaker, a microphone, a joystick, etc.

The processor 401 is responsible for managing the bus 400 and general processing, and the memory 404 may be used for storing data used by the processor 401 in performing operations.

The site can be a mobile phone, a tablet computer and other user side equipment.

Based on the same inventive concept, an embodiment of the present invention further provides an access point AP, and fig. 8 is a functional block diagram of the AP in this embodiment. The meanings and specific implementations of the terms referred to by the AP shown in fig. 8 can refer to the foregoing fig. 1 to 5 and the related descriptions of the embodiments.

Referring to fig. 8, the AP includes: a receiving unit 420, configured to receive an uplink frame sent by a station STA, where the uplink frame includes robust uplink transmission RUT indication information; a processing unit 421, configured to perform an RUT process on the uplink frame when the RUT indication information takes a first value; the AP comprises an association access point A-AP associated with the STA and a cooperation access point C-AP having a cooperation relation with the A-AP.

Optionally, the processing unit 421 is further configured to: determining that a source address or a target address carried in an uplink frame exists in a cooperation list of the C-AP; or, determining that the identifier of the management entity carried by the uplink frame is matched with the identifier of the management entity to which the C-AP belongs.

Optionally, the processing unit 421 is specifically configured to: judging whether the uplink frame is successfully received; and if the receiving is successful, forwarding the uplink frame to the management entities of the A-AP and the C-AP.

Optionally, when the uplink frame includes a plurality of slices, the processing unit 421 is specifically configured to: forwarding the plurality of fragments to a management entity to which the A-AP and the C-AP belong; or

Checking the plurality of fragments;

and forwarding the fragments verified to be correct to a management entity to which the A-AP and the C-AP belong.

Optionally, the processing unit 421 is specifically configured to: forwarding the undecoded uplink frame and the received signal strength indication RSSI and/or the signal to interference plus noise ratio SINR when the uplink frame is received to a management entity to which the A-AP and the C-AP belong; the undecoded uplink frame is a value of the uplink frame received by the receiving unit 420 before channel decoding.

In connection with the above embodiments, when the AP is embodied as an a-AP, the AP further includes a transmitting unit 422,

the receiving unit 420 is further configured to receive a request message sent by the STA for establishing a robust uplink transmission RUT; the sending unit 422 is configured to send a cooperation request message to the C-AP; the receiving unit 420 is further configured to receive a cooperation response message sent by the C-AP; the transmitting unit 422 is also configured to transmit a response message to the STA.

In conjunction with the above embodiments, when the AP is specifically a C-AP, the processing unit 421 is further specifically configured to record the first multicast address, the MAC address of the STA or the MAC address of the a-AP in the cooperation list.

In conjunction with the above embodiments, the AP further includes a transmitting unit 422, configured to transmit, to the STA, an acknowledgement message indicating that the uplink frame is correctly received when the uplink frame is correctly received.

Further, the sending unit 422 is specifically configured to: sending a confirmation message for indicating that the uplink frame is correctly received to the STA after the short interframe space SIFS; or

Various changes and specific examples of the AP execution process described in the foregoing embodiments are also applicable to the AP of the present embodiment, and a person skilled in the art can clearly know the implementation method of the AP in the present embodiment through the foregoing detailed description of the AP execution process, so that details are not described here for brevity of the description.

Fig. 9 is a conceptual diagram of an example of hardware implementation of the AP in the present embodiment. The AP includes: a receiver 431, configured to receive an uplink frame sent by a station STA, where the uplink frame includes robust uplink transmission RUT indication information; a processor 432, configured to perform an RUT process on the uplink frame when the RUT indication information takes a first value; the AP comprises an association access point A-AP associated with the STA and a cooperation access point C-AP having a cooperation relation with the A-AP.

Optionally, the processor 432 is further configured to: determining that a source address or a target address carried in an uplink frame exists in a cooperation list of the C-AP; or, determining that the identifier of the management entity carried by the uplink frame is matched with the identifier of the management entity to which the C-AP belongs.

Optionally, the processor 432 is specifically configured to: judging whether the uplink frame is successfully received; and if the receiving is successful, forwarding the uplink frame to the management entities of the A-AP and the C-AP.

Optionally, when the uplink frame includes a plurality of slices, the processor 432 is specifically configured to: forwarding the plurality of fragments to a management entity to which the A-AP and the C-AP belong; or

Checking the plurality of fragments;

Optionally, the processor 432 is specifically configured to: forwarding the undecoded uplink frame and the received signal strength indication RSSI and/or the signal to interference plus noise ratio SINR when the uplink frame is received to a management entity to which the A-AP and the C-AP belong; where the undecoded uplink frame is the value of the uplink frame received by the receiver 431 before channel decoding.

In connection with the various embodiments above, when the AP is embodied as an a-AP, the AP further includes a transmitter 433,

the receiver 431 is further configured to receive a request message sent by the STA for establishing a robust uplink transmission RUT; the transmitter 433 is configured to transmit a cooperation request message to the C-AP; the receiver 431 is further configured to receive a cooperation response message sent by the C-AP; the transmitter 433 is also used to transmit a response message to the STA.

In conjunction with the above embodiments, when the AP is specifically a C-AP, the processor 432 is specifically further configured to record the first multicast address, the medium access control MAC address of the STA, or the medium access control MAC address of the a-AP in the cooperation list.

In conjunction with the above embodiments, the AP further includes a transmitter 433 for transmitting an acknowledgement message to the STA when the uplink frame is correctly received, indicating that the uplink frame is correctly received.

Further, the transmitter 433 is specifically configured to: sending a confirmation message for indicating that the uplink frame is correctly received to the STA after the short interframe space SIFS; or

Where in fig. 9 a bus architecture (represented by bus 430), bus 430 may include any number of interconnected buses and bridges, and bus 430 links together various circuits including one or more processors, represented by processor 432, and memory, represented by memory 434. The bus 430 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface 435 provides an interface between the bus 430 and the receiver 431 and transmitter 433. The receiver 431 and the transmitter 433 may be the same element, i.e., a transceiver, providing a means for communicating with various other apparatus over a transmission medium.

The processor 432 is responsible for managing the bus 430 and general processing, and the memory 434 may be used for storing data used by the processor 432 in performing operations.

The access point AP may specifically be a wireless router, a hotspot, or an electronic device with a hotspot function, such as a mobile phone and a tablet computer.

Based on the same inventive concept, an embodiment of the present invention further provides a management entity, and fig. 10 is a functional block diagram of the management entity in this embodiment. The meanings and specific implementations of terms related to the station shown in fig. 10 can be referred to in the foregoing fig. 1 to 5 and the related description of the embodiments.

Referring to fig. 10, the management entity includes: a receiving unit 501, configured to receive at least one copy of an uplink frame from a station STA forwarded by an association access point a-AP and/or a cooperative access point C-AP; the method comprises the steps that an A-AP is an access point associated with an STA, a C-AP is an access point having a cooperative relation with the A-AP, an uplink frame comprises robust uplink transmission RUT indicating information, and the RUT indicating information is a first value; a processing unit 502, configured to perform merging processing on at least one duplicate of the uplink frame. And when the RUT indication information takes the first value, the associated access point A-AP associated with the STA and the cooperative access point C-AP having a cooperative relation with the A-AP both receive the uplink frame and perform RUT processing on the uplink frame.

The processing unit 502 is specifically configured to:

when at least one copy is decoded MAC layer data and does not contain multi-slices, selecting any copy which is checked correctly as a merging frame; or

When at least one copy is a copy which is not channel-decoded, the at least one copy is processed bit by bit according to a specific rule to obtain a merged frame.

Various changes and specific examples of the management entity execution process described in the foregoing embodiments are also applicable to the management entity of the present embodiment, and a person skilled in the art can clearly know the implementation method of the management entity in the present embodiment through the foregoing detailed description of the management entity execution process, so that the detailed description is omitted here for the brevity of the description.

Please refer to fig. 11, which is a conceptual diagram of an example of the hardware implementation of the management entity in the embodiment. The management entity includes: a receiver 601, configured to receive at least one copy of an uplink frame from a station STA forwarded by an association access point a-AP and/or a cooperative access point C-AP; the method comprises the steps that an A-AP is an access point associated with an STA, a C-AP is an access point having a cooperative relation with the A-AP, an uplink frame comprises robust uplink transmission RUT indicating information, and the RUT indicating information is a first value; a processor 602, configured to perform a combining process on at least one copy of the uplink frame.

The processor 602 is specifically configured to:

Where in fig. 11 a bus architecture (represented by bus 600) is shown, bus 600 may include any number of interconnected buses and bridges, and bus 600 links together various circuits including one or more processors, represented by processor 602, and memory, represented by memory 604. The bus 600 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface 605 provides an interface between the bus 400 and the receiver 601 and transmitter 603. The receiver 601 and the transmitter 603 may be the same element, i.e., a transceiver, providing a means for communicating with various other apparatus over a transmission medium.

The processor 602 is responsible for managing the bus 600 and general processing, and the memory 604 may be used for storing data used by the processor 602 in performing operations.

Referring to fig. 1 and fig. 12, fig. 12 is a functional block diagram of a communication system according to an embodiment of the present invention. The meaning and specific implementation of the terms involved in the communication system shown in fig. 12 can refer to the foregoing fig. 1 to 5 and the related description of the embodiments.

Referring to fig. 12, the communication system includes: the access point A-AP is associated and used for receiving an uplink frame sent by the station STA, and the uplink frame comprises robust uplink transmission RUT indication information; the A-AP is an associated access point of the STA; the cooperative access point C-AP is used for receiving the uplink frame, and the C-AP is an access point which has a cooperative relation with the A-AP; when the RUT indication information takes a first value, the A-AP and the C-AP are both used for carrying out RUT processing on the uplink frame. Wherein only 4C-APs are shown in fig. 12, in practical applications, the number of C-APs may be one, two, three or more. Further, the dotted line between the a-AP and the C-AP indicates that the two may be connected by a direct link or an indirect link.

Optionally, when the RUT indication information takes the first value, the C-AP is further configured to:

determining that a source address or a target address carried in an uplink frame exists in a cooperation list of the C-AP; or

In one embodiment, the A-AP and C-AP are specifically configured to: judging whether the uplink frame is successfully received; and if the receiving is successful, forwarding the uplink frame to the management entities of the A-AP and the C-AP.

In another embodiment, when the upstream frame comprises a plurality of slices, the a-AP and the C-AP are specifically configured to:

Checking the plurality of fragments;

In yet another embodiment, the A-AP and C-AP are specifically configured to: forwarding the undecoded uplink frame and the received signal strength indication RSSI and/or the signal to interference plus noise ratio SINR when the uplink frame is received to a management entity to which the A-AP and the C-AP belong; wherein the undecoded uplink frame is a value of the uplink frame received by the A-AP and the C-AP before channel decoding.

In combination with the above embodiments, the a-AP is further configured to receive a request message sent by the STA for establishing a robust uplink transmission RUT; sending a cooperation request message to the C-AP; the C-AP is also used for receiving a cooperation response message sent by the C-AP; and transmits a response message to the STA.

Further, the cooperation request message includes the first multicast address, the MAC address of the STA or the MAC address of the a-AP. The first multicast address is specifically a target address of the uplink frame.

Further, the C-AP is also configured to record the first multicast address, the MAC address of the STA, or the MAC address of the a-AP in a cooperation list.

In conjunction with the above embodiments, the a-AP and/or the C-AP are also configured to send an acknowledgement message to the STA when the uplink frame is correctly received, indicating that the uplink frame is correctly received.

Further, the A-AP is also used for sending a confirmation message for indicating that the uplink frame is correctly received to the STA after the short interframe space SIFS; or

All the APs which correctly receive the uplink frame are also used for simultaneously sending confirmation messages for indicating that the uplink frame is correctly received to the STA after the short interframe space SIFS; or

The a-AP and/or the C-AP are also configured to send an acknowledgement message to the STA after obtaining the medium transmission opportunity to indicate that the uplink frame was correctly received.

Optionally, the communication system further includes: the management entity is used for receiving at least one copy of the uplink frame forwarded by the A-AP and/or the C-AP; at least one copy of the uplink frame is merged; wherein the A-AP and the C-AP are managed by a management entity. A specific example of the management entity is the management entity described in fig. 10 and fig. 11.

Further, the management entity is specifically configured to: when at least one copy is decoded MAC layer data and does not contain multi-slices, selecting any copy which is checked correctly as a merging frame; or

Various changes and specific examples of the uplink transmission method described in the foregoing embodiments of fig. 1 to fig. 5 are also applicable to the communication system of this embodiment, and those skilled in the art can clearly know the implementation method of the communication system in this embodiment through the foregoing detailed description of the uplink transmission method, so that details are not described here for brevity of the description.

One or more technical solutions provided in the embodiments of the application have at least the following technical effects or advantages:

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An uplink transmission method, comprising:

and the STA sends the uplink frame.

2. The method of claim 1, wherein prior to the STA generating the uplink frame, the method further comprises:

3. The method of claim 1, wherein prior to the STA generating the uplink frame, the method further comprises:

the STA receives indication information sent by the A-AP, wherein the indication information is used for indicating whether the STA starts an RUT transmission mode;

the STA sets the RUT indication information to the first value or the second value at least according to the indication information.

4. The method of claim 3, wherein the indication information is located in a physical header preamble or a Medium Access Control (MAC) header of a downlink frame transmitted by the A-AP to the STA.

5. The method of claim 3, wherein the RUT indication information and the indication information are represented by the same indication bits in a physical header preamble sequence of a transmission frame.

6. The method of any of claims 1-4, wherein the RUT indication information is located in a physical header preamble sequence of the uplink frame.

7. The method of any of claims 1-5, wherein the STA, the a-AP, and the C-AP are managed by a same management entity; the A-AP establishes association with the STA, and the C-AP does not establish association with the STA.

8. The method of any of claims 1-5, wherein prior to the STA transmitting the uplink frame, the method further comprises:

the STA sends a request message for establishing a robust uplink transmission RUT to the A-AP;

and the STA receives the response message sent by the A-AP.

9. The method of claim 8, wherein when the response message indicates that the RUT is established, a first multicast address is included in the response message; the first multicast address is a target address of the uplink frame, and the first multicast address is used for: the C-AP can determine whether the STA is a legal user or not through the first multicast address.

10. The method of any of claims 1-5 or 9, wherein the source address of the uplink frame is the medium access control, MAC, address of the STA, and the destination address is the medium access control, MAC, address of the a-AP or the first multicast address; the first multicast address is to: the C-AP can determine whether the STA is a legal user or not through the first multicast address.

11. The method according to any of claims 1-5 or 9, wherein the uplink frame includes identification information of a management entity to which the a-AP belongs.

12. An uplink transmission method, comprising:

13. The method of claim 12, wherein when the RUT indication information takes a first value, before the AP RUT-processes the uplink frame, the method further comprises:

14. The method according to claim 12 or 13, wherein the AP performing RUT processing on the uplink frame specifically includes:

the A-AP and the C-AP judge whether the uplink frame is received successfully or not;

and if the uplink frame is successfully received, the A-AP or the C-AP forwards the uplink frame to a management entity to which the A-AP and the C-AP belong.

15. The method according to claim 12 or 13, wherein when the uplink frame includes a plurality of slices, the performing, by the AP, an RUT process on the uplink frame specifically includes:

The A-AP and the C-AP verify the plurality of fragments;

16. The method according to claim 12 or 13, wherein the AP performing RUT processing on the uplink frame specifically includes:

17. The method according to claim 12 or 13, wherein before the access point AP receives an uplink frame transmitted by a station STA, the method further comprises:

the A-AP sends a cooperation request message to the C-AP;

the A-AP receives a cooperation response message sent by the C-AP;

the A-AP sends a response message to the STA.

18. The method of claim 17, wherein the cooperation request message includes a first multicast address, a Medium Access Control (MAC) address of the STA or a Medium Access Control (MAC) address of the A-AP; the first multicast address is specifically a target address of the uplink frame.

19. The method of claim 18, wherein the method further comprises:

20. The method of any one of claims 12-13 or 18-19, further comprising:

and the C-AP records the MAC address of the A-AP in a cooperation list.

21. The method of any of claims 12-13 or 18-19, wherein after the AP RUT-processing the uplink frame, the method further comprises:

22. An uplink transmission method, comprising:

the management entity receives at least one copy of an uplink frame from a station STA forwarded by an associated access point A-AP, or receives at least one copy of an uplink frame from a station STA forwarded by the associated access point A-AP and a cooperative access point C-AP; the A-AP is an access point associated with the STA, the C-AP is an access point having a cooperation relationship with the A-AP, the uplink frame comprises robust uplink transmission RUT indication information, the RUT indication information is a first value, and when the RUT indication information takes the first value, the A-AP associated with the STA and the C-AP having the cooperation relationship with the A-AP both receive the uplink frame and perform RUT processing on the uplink frame;

23. The method as claimed in claim 22, wherein said managing entity combining at least one copy of said upstream frame comprises:

24. A Station (STA), comprising:

and the first sending unit is used for sending the uplink frame.

25. The STA of claim 24,

26. The STA of claim 24, wherein the STA further comprises a first receiving unit,

27. The STA of claim 26, wherein the indication information is located in a physical header preamble or a Medium Access Control (MAC) header of a downlink frame transmitted by the a-AP to the STA.

28. The STA of claim 26, wherein the RUT indication information and the indication information are represented by a same indication bit in a physical header preamble sequence of a transmission frame.

29. The STA of any one of claims 24-27, wherein the RUT indication information is located in a physical header preamble sequence of the uplink frame.

30. The STA of any one of claims 24-28, wherein the STA, the STA

The A-AP and the C-AP are managed by the same management entity; the A-AP establishes association with the STA, and the C-AP does not establish association with the STA.

31. The STA of any one of claims 24-28, further comprising:

32. The STA of claim 31, wherein when the response message indicates that the RUT is established, a first multicast address is included in the response message; the first multicast address is a target address of the uplink frame, and the first multicast address is used for: the C-AP can determine whether the STA is a legal user or not through the first multicast address.

33. The STA of any one of claims 24-28 or 32, wherein a source address of the uplink frame is a MAC address of the STA, and a destination address is the MAC address of the a-AP or a first multicast address; the first multicast address is to: the C-AP can determine whether the STA is a legal user or not through the first multicast address.

34. The STA of any of claims 24-28 or 32, wherein the uplink frame includes identification information of a management entity to which the a-AP belongs.

35. An access point, AP, comprising:

36. The AP of claim 35, wherein the processing unit is further to: determining that a source address or a target address carried in the uplink frame exists in a cooperation list of the C-AP; or, determining that the identifier of the management entity carried by the uplink frame is matched with the identifier of the management entity to which the C-AP belongs.

37. The AP of claim 35 or 36, wherein the processing unit is specifically configured to: judging whether the uplink frame is received successfully or not; and if the uplink frame is successfully received, forwarding the uplink frame to the management entities of the A-AP and the C-AP.

38. The AP according to claim 35 or 36, wherein, when the uplink frame includes a plurality of slices, the processing unit is specifically configured to: forwarding the plurality of fragments to a management entity to which the A-AP and the C-AP belong; or

Checking the plurality of fragments;

39. The AP of claim 35 or 36, wherein the processing unit is specifically configured to: forwarding un-decoded uplink frames and received signal strength indication RSSI and/or signal to interference plus noise ratio SINR when receiving the uplink frames to a management entity to which the A-AP and the C-AP belong; wherein the undecoded uplink frame is a value of the uplink frame received by the receiving unit before channel decoding.

40. The AP of claim 35 or 36, wherein when the AP is specifically the A-AP, the AP further comprises a transmitting unit,

the sending unit is used for sending a cooperation request message to the C-AP;

the sending unit is further configured to send a response message to the STA.

41. The AP of claim 35 or 36, wherein when the AP is specifically a C-AP, the processing unit is specifically further configured to record a first multicast address, a medium access control, MAC, address of the STA, or a medium access control, MAC, address of the a-AP in a cooperation list.

42. The AP of claim 35 or 36, wherein the AP further comprises a transmitting unit,

43. A communication system, comprising:

44. The communication system of claim 43, wherein when the RUT indication information takes a first value, the C-AP further operates to:

45. The communication system according to claim 43 or 44, wherein the A-AP and the C-AP are specifically configured to: judging whether the uplink frame is received successfully or not; and if the uplink frame is successfully received, forwarding the uplink frame to the management entities of the A-AP and the C-AP.

46. The communication system according to claim 43 or 44, wherein when the uplink frame comprises a plurality of slices, the A-AP and the C-AP are specifically configured to:

Checking the plurality of fragments;

47. The communication system according to claim 43 or 44, wherein the A-AP and the C-AP are specifically configured to: forwarding un-decoded uplink frames and received signal strength indication RSSI and/or signal to interference plus noise ratio SINR when receiving the uplink frames to a management entity to which the A-AP and the C-AP belong; wherein the undecoded uplink frame is a value of the uplink frame received by the A-AP and the C-AP before channel decoding.

48. The communication system of claim 43 or 44, wherein the A-AP is further configured to receive a request message sent by the STA to establish a robust uplink transmission RUT; sending a cooperation request message to the C-AP; the C-AP is also used for receiving a cooperation response message sent by the C-AP; and transmits a response message to the STA.

49. The communication system of claim 48, wherein the cooperation request message includes a first multicast address, a Media Access Control (MAC) address of the STA or a Media Access Control (MAC) address of the A-AP; the first multicast address is specifically a target address of the uplink frame.

50. The communication system of claim 49, wherein the C-AP is further configured to record the first multicast address, the MAC address of the STA, or the MAC address of the A-AP in a cooperation list.

51. The communication system of any of claims 43-44 or 49, wherein the C-AP is further configured to record a Media Access Control (MAC) address of the A-AP in a collaboration list.

52. The communication system according to any of claims 43-44 or 49-50, wherein when the uplink frame is correctly received,

53. The communication system according to any of claims 43-44 or 49-50, wherein the communication system further comprises:

54. The communication system of claim 53, wherein the management entity is specifically configured to:

55. A management entity, comprising:

a receiving unit, configured to receive at least one copy of an uplink frame from a station STA forwarded by an association access point a-AP, or receive at least one copy of an uplink frame from a station STA forwarded by an association access point a-AP and a cooperative access point C-AP; the A-AP is an access point associated with the STA, the C-AP is an access point having a cooperation relationship with the A-AP, the uplink frame comprises robust uplink transmission RUT indication information, the RUT indication information is a first value, and when the RUT indication information takes the first value, the A-AP associated with the STA and the C-AP having the cooperation relationship with the A-AP both receive the uplink frame and perform RUT processing on the uplink frame;

56. The management entity of claim 55, wherein the processing unit is specifically configured to: