CN109417828B

CN109417828B - Random access method and site

Info

Publication number: CN109417828B
Application number: CN201780040939.2A
Authority: CN
Inventors: 乔登宇; 丁志明; 容志刚
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-11-01
Filing date: 2017-02-28
Publication date: 2021-11-19
Anticipated expiration: 2037-02-28
Also published as: CN109417828A; WO2018082230A1

Abstract

A random access method and a site are used for solving the problem that a scheduled site with random access capability in the existing random access mechanism has low success probability of finishing uplink transmission through random access resources distributed by a scheduling site. The method comprises the following steps: the scheduling station generates resource information and station information, wherein the resource information is used for indicating channel resources allocated by the scheduling station, the station information is used for indicating that the channel resources are random access resources of a first station, the first station refers to all or part of all stations scheduled by the scheduling station with random access capability, and the second station refers to all stations with random access capability except the first station; scheduling the site to send resource information and site information; the first station carries out random access in the channel resource indicated by the resource information according to the indication of the station information; and the second station determines not to carry out random access in the channel resource indicated by the resource information according to the indication of the station information.

Description

Random access method and site

The present application claims priority of chinese patent application entitled "a method and apparatus for scheduling random access" filed by the chinese patent office on 2016, 11, 01, and having application number 201610942664.9, the entire contents of which are incorporated herein by reference.

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a random access method and a station.

Background

The wireless local area network is composed of stations, and the stations include Access Points (APs) and user Stations (STAs). In some service scenarios, data transmission between the access point and the station is not required to be performed all the time, so a scheduling mechanism can be established between the access point and the station, so that the station can enter a sleep state. In the scheduling mechanism, a station scheduled is referred to as a scheduling station, the scheduling station may be an AP, a station scheduled by the scheduled station is referred to as a scheduled station, stations other than the scheduling station and the scheduled station are referred to as non-scheduled stations, and the scheduled station and the non-scheduled station may be STAs.

The scheduled station may remain in an awake state during the scheduling period and may enter a sleep state outside the scheduling period to save power of the scheduled station, for example, the scheduling mechanism may be a Target Wake Time (TWT) mechanism specified by the 802.11 standard, and the scheduling period in the TWT mechanism is a TWT service period. When the scheduled station changes from the sleep state to the awake state, the scheduled station needs to send a transmission frame to the scheduling station to report that the scheduled station has entered the awake state or indicate the amount of data to be sent by the scheduled station, so that the scheduling station can better schedule the scheduled station for subsequent transmission. The scheduled station may send a transmission frame by using a random Access mechanism, that is, stations with random Access capability may all randomly select resource blocks within random Access resources allocated by the scheduled station for transmission, for example, the random Access mechanism may be an Orthogonal Frequency Division Multiple Access (OFDMA) random Access mechanism specified by the supplement standard 802.11ax of the 802.11 standard.

Since the random access resource allocated by the scheduling station in the prior art can be identified by any station with random access capability, and the station with random access capability includes a scheduled station with random access capability and a non-scheduled station with random access capability, the random access resource allocated by the scheduling station for the scheduled station with random access capability can also be identified by the non-scheduled station with random access capability. Therefore, in the case that the random access resources allocated to the scheduled station with random access capability are limited, when there are more non-scheduled stations with random access capability, the probability that the multiple stations simultaneously select the same resource block for transmission and cause transmission collision is high, which results in a low probability of successful transmission of the scheduled station with random access capability on the random access resources allocated to the scheduled station with random access capability.

In summary, the problem that the probability of successful transmission of the scheduled station with random access capability on the random access resource allocated to the scheduled station is low exists in the existing random access mechanism.

Disclosure of Invention

The embodiment of the invention provides a random access method and a station, which are used for solving the problem that the success probability of uplink transmission of a scheduled station with random access capability on a random access resource distributed by a scheduling station is lower in the existing random access mechanism.

In a first aspect, a random access method provided in an embodiment of the present invention includes:

a scheduling station generates resource information and station information, wherein the resource information is used for indicating channel resources allocated by the scheduling station, the station information is used for indicating that the channel resources are random access resources of a first station, so that a second station identifies that the channel resources are resources allocated to stations except for the second station, the first station refers to all or part of all stations with random access capability and scheduled by the scheduling station, and the second station refers to stations except for the first station in all stations with random access capability;

and the scheduling station sends the resource information and the station information so that the first station carries out random access by using the channel resource indicated by the resource information.

The first station refers to a general term of a scheduled station with random access capability, and the first station may include all stations or part of stations in the scheduled station with random access capability; the second station is a general term of stations except the first station in all stations with random access capability.

In the method, the scheduling station indicates through the station information that the channel resource indicated by the resource information is the random access resource of the first station, so that the second station identifies the channel resource as the resource allocated to the station other than the second station. And the second station determines that the random access is not carried out in the channel resource indicated by the resource information according to the indication of the station information. By the method, all or part of the scheduled sites with the random access capability can preempt the random access resources distributed by the scheduled sites, and other sites with the random access capability cannot preempt the random access resources distributed by the scheduled sites, so that the probability of the scheduled sites with the random access capability preempting the random access resources can be improved. After the scheduled station occupies the random access resource, the uplink transmission frame is transmitted to the scheduling station in the scheduling period by adopting the prior art, so the success probability of completing the uplink transmission by the scheduled station with the random access capability through the random access resource distributed by the scheduling station can be improved.

In one possible implementation, the scheduling station sending the resource information and the station information includes:

and the scheduling station sends a trigger message comprising the resource information and the station information in a scheduling period of the first station, wherein the trigger message is used for triggering multi-user uplink transmission.

In this way, the scheduling station may send the resource information and the station information through the trigger message, so that the first station and the second station receive the resource information and the station information.

In a possible implementation, the resource information is carried in a resource block allocation field in the resource allocation record of the trigger message, and the site information is carried in a site identification field in the resource allocation record of the trigger message; or,

the resource information is carried in a resource block allocation field in the resource allocation record of the trigger message, and the site information is carried in a common information field or a user information field of the trigger message.

In a possible implementation, the station information includes a preset value, and the preset value is used to indicate that the channel resource is a random access resource of the first station.

Thus, the indication of the station information can be realized by the station information including a preset value.

In one possible implementation, before the scheduling station generates the resource information and the station information, the method further includes:

the scheduling station sends the preset value through one of the following messages: a broadcast message, a query response message, an association response message, a re-association response message, and a target wake-up time response message.

Therefore, before the first station and the second station receive the resource information and the station information sent by the scheduling station, the first station and the second station can determine the meaning indicated by the preset value by sending the preset value by the scheduling station, and further, after the first station and the second station receive the resource information and the station information sent by the scheduling station, random access is carried out according to the indication of the resource information and the station information.

In a second aspect, a random access method provided in an embodiment of the present invention includes:

a station receives resource information and station information sent by a scheduling station, wherein the resource information is used for indicating channel resources allocated by the scheduling station, the station information is used for indicating that the channel resources are random access resources of a first station, so that a second station identifies that the channel resources are resources allocated to stations except for the second station, the first station refers to all or part of all stations with random access capability and scheduled by the scheduling station, and the second station refers to stations except for the first station in all stations with random access capability;

when the station is the first station, the first station performs random access in the channel resource indicated by the resource information according to the indication of the station information;

and when the station is the second station, the second station determines not to perform random access in the channel resource indicated by the resource information according to the indication of the station information.

The first station refers to a general term of a scheduled station with random access capability, and the first station may include all stations or part of stations in the scheduled station with random access capability; the second station is a general term of stations except the first station in all the stations with random access capability and random access capability.

In the method, a first station or a second station receives resource information and station information sent by a scheduling station, the first station or the second station makes the first station as the scheduled station perform random access in the channel resource indicated by the resource information according to the indication of the station information, and the second station determines that the random access is not performed in the channel resource indicated by the resource information according to the indication of the station information. By the method, all or part of the scheduled sites with the random access capability can preempt the random access resources distributed by the scheduled sites, and other sites with the random access capability cannot preempt the random access resources distributed by the scheduled sites, so that the probability of the scheduled sites with the random access capability preempting the random access resources can be improved. After the scheduled station occupies the random access resource, the uplink transmission frame is transmitted to the scheduling station in the scheduling period by adopting the prior art, so the success probability of completing the uplink transmission by the scheduled station with the random access capability through the random access resource distributed by the scheduling station can be improved.

In one possible implementation, the receiving, by the station, the resource information and the station information sent by the scheduling station includes:

and the station receives a trigger message which is sent by the scheduling station in a scheduling period of the first station and comprises the resource information and the station information.

In this way, the first station and the second station can receive the resource information and the station information by receiving the trigger message.

In a possible implementation, the station information includes a preset value for indicating that the channel resource is a random access resource of the first station.

Before the station receives the resource information and the station information sent by the scheduling station, the method further includes:

the station receives the preset value sent by the scheduling station through one of the following messages: broadcast message, query response message, association response message, re-association response message, and target wake-up time response message

In a third aspect, a scheduling station provided in an embodiment of the present invention includes:

a processing unit, configured to generate resource information and site information, where the resource information is used to indicate a channel resource allocated by the scheduling site, and the site information is used to indicate that the channel resource is a random access resource of a first site, so that a second site identifies that the channel resource is a resource allocated to a site other than the second site, where the first site is all or part of all sites scheduled by the scheduling site and has a random access capability, and the second site is a site other than the first site in all sites having a random access capability;

a transceiver unit, configured to send the resource information and the site information generated by the processing unit, so that the first site performs random access using the channel resource indicated by the resource information.

In one possible implementation, the transceiver unit is specifically configured to:

and sending a trigger message comprising the resource information and the site information in a scheduling period of the first site, wherein the trigger message is used for triggering multi-user uplink transmission.

In one possible implementation, the transceiver unit is further configured to:

before the processing unit generates the resource information and the site information, the preset value is sent through one of the following messages: a broadcast message, a query response message, an association response message, a re-association response message, and a target wake-up time response message.

In a fourth aspect, a scheduling station provided in an embodiment of the present invention includes: a processor, a memory, a transceiver, and a bus;

the processor, the memory and the transceiver are communicated with each other through the bus; the transceiver is used for receiving and transmitting data;

the memory is to store instructions;

the processor is configured to execute the instructions in the memory to perform the method provided by the first aspect.

In a fifth aspect, an embodiment of the present invention further provides a computer storage medium for storing computer software instructions for a scheduling station in the fourth aspect, which includes a program for executing the program designed in the fourth aspect.

In a sixth aspect, a station provided in an embodiment of the present invention includes:

a transceiver unit, configured to receive resource information and site information sent by a scheduling site, where the resource information is used to indicate a channel resource allocated by the scheduling site, and the site information is used to indicate that the channel resource is a random access resource of a first site, so that a second site identifies that the channel resource is a resource allocated to a site other than the second site, where the first site is all or part of all sites scheduled by the scheduling site and having a random access capability, and the second site is a site other than the first site in all sites having a random access capability;

a processing unit, configured to, when the station is the first station, control, according to the indication of the station information received by the transceiver unit, the first station to perform random access within the channel resource indicated by the resource information; and when the station is the second station, determining that the second station does not perform random access in the channel resources indicated by the resource information according to the indication of the station information.

and receiving a trigger message which is sent by the scheduling station in a scheduling period of the first station and comprises the resource information and the station information.

In one possible implementation, the transceiver unit is further configured to:

before receiving the resource information and the site information sent by the scheduling site, receiving the preset value sent by the scheduling site through one of the following messages: a broadcast message, a query response message, an association response message, a re-association response message, and a target wake-up time response message.

In a seventh aspect, a station provided in an embodiment of the present invention includes: a processor, a memory, a transceiver, and a bus;

the memory is to store instructions;

the processor is used for executing the instructions in the memory and executing the method provided by the second aspect.

In an eighth aspect, an embodiment of the present invention further provides a computer storage medium for storing computer software instructions for a station in the seventh aspect, which contains a program designed to execute the seventh aspect.

Drawings

Fig. 1A is a schematic diagram of a network architecture to which the technical solution provided by the embodiment of the present invention is applicable;

fig. 1B is a schematic diagram of states of a scheduled station in a scheduling period and outside the scheduling period according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a random access system architecture according to an embodiment of the present invention;

fig. 3-1 is a schematic flow chart of a random access method according to an embodiment of the present invention;

fig. 3-2 is a flow chart illustrating a random access method provided in an embodiment of the present invention;

fig. 3-3 is a flow chart of a random access method according to another embodiment of the present invention;

fig. 3-4 are schematic diagrams illustrating a random access method according to three embodiments of the present invention;

fig. 4 is a schematic flow chart of a random access method according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a scheduling station according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another scheduling station according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a station according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of another station provided in the embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. The character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

It should be understood that although the terms first, second, third, etc. may be used to describe various messages, thresholds, and stations in embodiments of the present invention, these messages, thresholds, and stations should not be limited to these terms. These terms are only used to distinguish messages, thresholds, and stations from one another. For example, a first site may also be referred to as a second site, and similarly, a second site may also be referred to as a first site without departing from the scope of embodiments of the present invention.

The word "if" or "if," as used herein, may be interpreted as "when or" responsive to a determination "or" in response to a detection, "depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.

The embodiment of the invention provides a random access method and a station, which aim to solve the problem that the success probability of finishing uplink transmission by a scheduled station with random access capability through random access resources distributed by the scheduling station is low in the prior art. The method and the site provided by the embodiment of the invention are based on the same inventive concept, and because the principles of solving the problems of the method and the site are similar, the implementation of the method and the site can be mutually referred, and repeated parts are not repeated.

In order to better understand the technical solution provided by the embodiment of the present invention, a network architecture to which the embodiment of the present invention is applicable is described below. Fig. 1A is a schematic diagram of a network architecture to which the technical solution provided by the embodiment of the present invention is applicable, and fig. 1 is a wireless local area network, where the network is composed of stations, and the stations include an AP and user stations STA1-STA4, and data transmission can be performed between STA1-STA4 and the AP. Since in some traffic scenarios, no data transmission is required between STA1 and the AP and between STA2 and the AP all the time, a scheduling mechanism is established between STA1 and the AP and between STA2 and the AP, respectively, to save power of STA1 and STA 2.

In the scheduling mechanism, a station scheduled to be scheduled is referred to as a scheduling station, a station scheduled by the scheduled station is referred to as a scheduled station, and stations other than the scheduling station and the scheduled station are referred to as non-scheduled stations. In the scenario shown in fig. 1, the AP is referred to as a scheduled station, STA1 and STA2 are referred to as scheduled stations, and STA3 and STA4 are referred to as non-scheduled stations.

Taking the scheduling mechanism established between STA1 and the AP as an example, the scheduling mechanism is that after the scheduled station STA1 indicates to the scheduled station AP that STA1 supports the scheduled capability, the AP sends a scheduling period of STA1 to STA1 through a control frame, a management frame, a data frame, or the like, where the scheduling period includes a start time of the scheduling period and a duration of the scheduling period, and the scheduling period may be scheduled once or periodically. According to the schedule of the AP, the STA1 is in an awake state during the scheduling period, and may enter a sleep state outside the scheduling period. For example, the scheduling mechanism may be a TWT mechanism specified by the 802.11 standard, and the scheduling period in the TWT mechanism is a TWT service period. Fig. 1B is a diagram illustrating states of STA1 and STA2 during and outside the scheduling period, respectively.

In the scheduling mechanism, after a scheduled station changes from a sleep state to an awake state, the scheduled station needs to send an uplink transmission frame to the scheduling station to report that the scheduled station has entered the awake state or indicate the amount of data to be sent by the scheduled station, so that the scheduling station better schedules the scheduled station for subsequent transmission. When there are many scheduled stations that need to send uplink transmission, scheduling the scheduled stations that need to send uplink transmission by the scheduling station is a method with high efficiency. However, since the scheduling station cannot know in advance which scheduled stations need to send uplink transmission frames, the scheduling station cannot directly schedule the corresponding scheduled stations, and therefore the problem that the scheduled stations send uplink transmissions can be solved by using a random access mechanism, that is, stations with random access capability can perform random access in random access resources allocated by the scheduling station, for example, the random access mechanism may be an OFDMA random access mechanism formulated by the supplement standard 802.11ax of the 802.11 standard.

Although the random access mechanism can solve the problem that the scheduled station sends uplink transmission after waking up, in the prior art, all stations with random access capability can perform random access in resources allocated by the scheduled station, and the stations with random access capability include the scheduled station with random access capability and non-scheduled stations with random access capability. Therefore, under the condition that the random access resources allocated by the scheduling station are limited, the non-scheduled station with the random access capability can preempt certain random access resources, which results in a lower success probability that the scheduled station with the random access capability completes uplink transmission through the random access resources allocated by the scheduling station.

Example one

In order to solve the problem in the prior art that a scheduled station with a random access capability has a low success probability of completing uplink transmission through a random access resource allocated by a scheduling station, embodiments of the present invention provide a random access method and a station. The technical scheme provided by the embodiment of the invention is described in detail below.

As shown in fig. 2, an embodiment of the present invention provides a random access system, and the system 200 includes a scheduling station 201, a first station 202, and a second station 203. The scheduling station 201 may be an access point, the first station 202 refers to all or part of all stations scheduled by the scheduling station 201 and having a random access capability, the first station 202 is a scheduled station having a random access capability, the second station 203 refers to stations except the first station 202 among all stations having a random access capability, that is, the second station 203 may be a non-scheduled station having a random access capability or a scheduled station having a random access capability, and the first station 202 and the second station 203 may be STAs.

It should be understood that the first station in this embodiment refers to a general term of scheduled stations with random access capability, and the first station may include all stations or some stations in the scheduled stations with random access capability; the second station is a generic term of stations except the first station among all stations having random access capability.

In the random access system 200, the operation principle among the scheduling station 201, the first station 202, and the second station 203 is as follows:

the scheduling station 201 is configured to generate resource information and station information, where the resource information is used to indicate the channel resource allocated by the scheduling station 201, and the station information is used to indicate that the channel resource is a random access resource of the first station 201, so that the second station 202 identifies the channel resource as a resource allocated to a station other than the second station 202.

The scheduling site sends the resource information and the site information so that the first site performs random access by using the channel resource indicated by the resource information to generate resource information and site information; and sending the resource information and the site information.

A first station 202, configured to receive resource information and station information sent by a scheduling station 201; and performing random access in the channel resource indicated by the resource information according to the indication of the site information.

A second station 203, configured to receive the resource information and the station information sent by the scheduling station 201; and according to the indication of the site information, determining that random access is not performed in the channel resources indicated by the resource information.

In the random access system provided by the embodiment of the present invention, the scheduling station indicates through the station information, and the channel resource indicated by the resource information is a random access resource of the first station, so that the second station identifies the channel resource as a resource allocated to a station other than the second station. And the second station determines that the random access is not carried out in the channel resources indicated by the resource information according to the indication of the station information. The system can realize that all or part of scheduled sites with random access capability can preempt the random access resources distributed by the scheduled sites, and other sites with random access capability can not preempt the random access resources distributed by the scheduled sites, so the probability of the scheduled sites with random access capability preempting the random access resources can be improved. After the scheduled station occupies the random access resource, the uplink transmission frame is transmitted to the scheduling station in the scheduling period by adopting the prior art, so the success probability of completing the uplink transmission by the scheduled station with the random access capability through the random access resource distributed by the scheduling station can be improved.

Based on the same inventive concept as that of the random access system provided in the embodiment of the present invention, as shown in fig. 3-1, an embodiment of the present invention further provides a random access method, where an interaction flow among the scheduling station, the first station, and the second station is as follows:

s301, scheduling the sites to generate resource information and site information.

The resource information is used to indicate channel resources allocated by the scheduling station, the station information is used to indicate that the channel resources indicated by the resource information are random access resources of a first station, so that a second station identifies that the channel resources are resources allocated to stations other than the second station, the first station refers to all or part of all stations scheduled by the scheduled station with random access capability, and the second station refers to all stations with random access capability except the first station. The channel resources indicated by the resource information may include a subcarrier set consisting of one or more subcarriers, and the resource information may include position and size information of the subcarriers.

It should be understood that the first station refers to a general term of scheduled stations with random access capability, and the first station may include all stations or some stations of the scheduled stations with random access capability; the second station is a generic term of stations except the first station among all stations having random access capability. The first station is a random access device supporting the target wake-up time, or a random access device to be transmitted with data supporting the target wake-up time.

Since the random access method provided in this embodiment is applicable to a scenario where a scheduling station and a first station establish a scheduling mechanism, before S301, the scheduling station sends scheduling information to the first station, where the scheduling information is used to indicate that the first station keeps an awake state in a scheduling period and can keep a sleep state outside the scheduling period. In a specific implementation, the scheduling information carries information of a scheduling period, for example, the information of the scheduling period may include a start time of the scheduling period and a duration of the scheduling period. The scheduling station may send the scheduling information carried in one of the following messages: control frames, management frames, and data frames. The management frame may be a scheduling negotiation frame, a scheduling response frame, a beacon frame, an association response frame, a re-association response frame, or a probe response frame.

The scheduling mechanism established between the scheduling station and the first station may be a TWT mechanism formulated by the 802.11 standard, in this scenario, the scheduling period of the first station is a TWT service period, and the scheduling negotiation frame may be a TWT response frame.

S302, scheduling the sites to send the resource information and the site information.

In this embodiment, S302 may be implemented by the following method:

and the scheduling station sends a trigger message comprising the resource information and the station information in a scheduling period of the first station.

And the triggering message sent by the scheduling station in the scheduling period of the first station is used for triggering uplink multi-user transmission. The first station enters a scheduling cycle and is changed from a dormant state to an awake state, the first station needs to send an uplink transmission frame to the scheduling station, and the trigger message is used for triggering the first station to perform uplink transmission. The multi-user uplink transmission may be an OFDMA-based uplink transmission, and the random access in this embodiment refers to an OFDMA-based random access. The uplink multi-user transmission may also be uplink Multiple-Input Multiple-Output (MIMO) transmission, uplink Space Division Multiple Access (SDMA) transmission, or the like.

The scheduling station may send the resource information and the station information through the trigger message in two cases:

the first condition is as follows: the resource information is carried in a resource block allocation field in the resource allocation record of the trigger message, and the site information is carried in a site identification field in the resource allocation record of the trigger message.

Wherein the resource allocation record is used to indicate the allocated channel resources and to which stations the channel resources are allocated. In the prior art, the resource allocation record of the trigger message carries information for indicating allocated channel resources through a resource block allocation field, and carries information for indicating to which stations the channel resources are allocated through a station identification field. The case one is the same as the field for carrying the resource allocation record in the prior art, but the difference is that in the case one, the station information carried by the station identification field is used to indicate that the allocated channel resource is the random access resource of the first station, and in the prior art, the station information carried by the station identification field is used to indicate that the allocated channel resource is the random access resource of all the stations with random access capability.

Case two: the resource information is carried in a resource block allocation field in the resource allocation record of the trigger message, and the site information is carried in a common information field or a user information field of the trigger message.

Wherein the resource allocation record is used to indicate the allocated channel resources and to which stations the channel resources are allocated. In the prior art, the resource allocation record of the trigger message carries information for indicating allocated channel resources through a resource block allocation field, and carries information for indicating to which stations the channel resources are allocated through a station identification field. In case two, the station information in this embodiment is carried through a common information field or a user information field on the basis of the prior art, that is, in case two, a resource block allocation field in a resource allocation record of a trigger message is used for carrying resource information for indicating allocated channel resources, a station identification field in the resource allocation record of the trigger message is used for indicating that the allocated channel resources are random access resources of all stations with random access capability, and a common information field or a user information field of the trigger message is used for indicating that the allocated channel resources are random access resources of a first station. In this case, the station information carried in the common information field or the user information field of the trigger message is used as a standard, so that the first station identifies the allocated channel resource as a random access resource of the first station, and the second station identifies the allocated channel resource as a resource allocated to a station other than the second station.

In this embodiment, the station information may include a preset value, where the preset value is used to indicate that the channel resource indicated by the resource information is a random access resource of the first station. The preset value can be a fixed value or a dynamic value. By setting the preset values to different values or different value ranges, it can be indicated that the channel resource allocated by the scheduling station is a random access resource of different stations with random access capability, and can be one or more stations.

Before the scheduling station generates the station information, the scheduling station, the first station and the second station should negotiate to obtain the meaning of the preset value. Therefore, before the scheduling station generates the station information, the preset value is sent by one of the following messages: a broadcast message, a query response message, an association response message, a re-association response message, and a target wake-up time response message. It should be noted that the message for sending the preset value includes, but is not limited to, the message provided above.

The preset value can be allocated by the system, in this scenario, the system notifies the scheduling station of the meaning of the preset value, and then the scheduling station notifies the first station and the second station of the meaning of the preset value. The preset value may also be allocated by the scheduling station, and in this scenario, the scheduling station notifies the first station and the second station of the meaning of the preset value. Therefore, after the scheduling station generates and transmits station information including a preset value, the first station and the second station can determine that the first station can perform random access in the channel resource indicated by the resource information transmitted by the scheduling station through pre-negotiation of the meaning of the preset value.

In this embodiment, the station performing random access using the channel resource allocated by the scheduling station may include all or part of the scheduled stations with random access capability. Which scheduled stations with random access capability are allowed to perform random access within the random access resources allocated by the scheduling station can be indicated by a preset value.

For example, when the preset value is set to 1, the first station is all stations in the scheduled stations with random access capability, that is, the preset value indicates that the channel resource indicated by the resource information is the random access resource of all stations in the scheduled stations with random access capability; when the preset value is set to 0, the first station is indicated as a station with random access capability (including a scheduled station and a non-scheduled station), that is, the preset value indicates that the channel resource indicated by the resource information is a random access resource of the station with random access capability. For another example, all scheduled stations with random access capability may be grouped, assuming that stations 1 to 6 are all scheduled stations with random access capability, and dividing stations 1 to 6 into two groups, where the first group of stations includes station 1 to station 3, and the second group of stations includes station 4 to station 6; when the preset value is set to 10, the first station is represented as a first group of stations, that is, the preset value represents that the channel resource indicated by the resource information is a random access resource of the first group of stations; when the preset value is set to 01, the first station is represented as a second group of stations, namely the preset value represents that the channel resource indicated by the resource information is a random access resource of the second group of stations; when the preset value is set to 11, the first station is represented as all scheduled stations (including a first group of stations and a second group of stations) with random access capability; and when the preset value is set to 00, the first station is represented as all stations with random access capability.

And S303, after receiving the resource information and the site information sent by the scheduling site, the first site performs random access in the channel resource indicated by the resource information according to the indication of the site information.

S304, after the second site receives the resource information and the site information sent by the scheduling site, according to the indication of the site information, the second site determines that the random access is not performed in the channel resource indicated by the resource information.

The following illustrates a random access method provided in this embodiment.

To illustrate

A random access method provided in this embodiment is shown in fig. 3-2, and the method shown in fig. 3-2 may refer to the method shown in fig. 3-1, where a main difference is that the method shown in fig. 3-2 embodies a step of scheduling a station to send scheduling information, and a complete explanation of the method shown in fig. 3-2 may refer to the method shown in fig. 3-1, and is not described herein again.

By way of example, 2

A random access method provided in this embodiment is shown in fig. 3-3, and the method shown in fig. 3-3 can refer to the method shown in fig. 3-3, where the main difference is that the method shown in fig. 3-3 embodies a step of a scheduling station sending scheduling information and a preset value, and in the method shown in fig. 3-3, resource information is carried in a resource block allocation field in a resource allocation record of a trigger message, and station information is carried in a station identification field in the resource allocation record of the trigger message. The entire explanation of the method shown in fig. 3-3 can be found in the method shown in fig. 3-1, and will not be described herein.

To illustrate three

A random access method provided in this embodiment is shown in fig. 3-4, and the method shown in fig. 3-4 can refer to the method shown in fig. 3-4, where the main difference is that the method shown in fig. 3-4 embodies a step of scheduling a station to send scheduling information, and in the method shown in fig. 3-4, resource information is carried in a resource block allocation field in a resource allocation record of a trigger message, and station information is carried in a common information field or a user information field of the trigger message. The entire explanation of the method shown in fig. 3-4 can be found in the method shown in fig. 3-1, and will not be described herein.

In the random access method provided in this embodiment, a scheduling station indicates, through station information, a channel resource indicated by resource information is a random access resource of a first station, so that a second station identifies the channel resource as a resource allocated to a station other than the second station. And the second station determines that the random access is not carried out in the channel resources indicated by the resource information according to the indication of the station information. By the method, all or part of the scheduled sites with the random access capability can preempt the random access resources distributed by the scheduled sites, and other sites with the random access capability cannot preempt the random access resources distributed by the scheduled sites, so that the probability of the scheduled sites with the random access capability preempting the random access resources can be improved. After the scheduled station occupies the random access resource, the uplink transmission frame is transmitted to the scheduling station in the scheduling period by adopting the prior art, so the success probability of completing the uplink transmission by the scheduled station with the random access capability through the random access resource distributed by the scheduling station can be improved.

Example two

The embodiment of the invention also provides another random access method, which is used for solving the problem that the success probability of finishing uplink transmission by the scheduled station with random access capability through the random access resources distributed by the scheduling station is lower in the prior art. The method relates to a scheduling station, a first station and a second station, wherein the scheduling station may be an access point, the first station refers to a general term of a scheduled station with random access capability, the first station may include all stations or part of stations in the scheduled station with random access capability, the second station refers to a general term of stations except the first station in all stations with random access capability, and the first station and the second station may be STAs.

As shown in fig. 4, an interaction flow among a scheduling station, a first station, and a second station in another random access method provided in an embodiment of the present invention is as follows:

s401, the scheduling station generates information of a first contention window and information of a second contention window.

The first contention window refers to a contention window for the first station to perform random access in the channel resources allocated by the scheduling station, the second contention window refers to a contention window for the second station to perform random access in the channel resources allocated by the scheduling station, and information of the contention window may include information such as a maximum value and a minimum value of the contention window.

The following conditions need to be satisfied between the information of the first contention window and the information of the second contention window: the maximum value of the first contention window is less than the maximum value of the second contention window, and/or the minimum value of the first contention window is less than the minimum value of the second contention window.

In a scheduling period of a first station, the first station randomly generates a first initial value of a backoff counter according to a contention window indicated by information of a first contention window, and the first station performs random access in channel resources allocated by the scheduling station after backoff is completed according to the first initial value; and in the scheduling period of the first station, the second station randomly generates a second initial value of the backoff counter according to the contention window indicated by the information of the second contention window, and the second station completes backoff according to the second initial value and then performs random access in the channel resources distributed by the scheduling station. Under the condition that the information of the first contention window and the information of the second contention window meet the conditions, the first initial value is smaller than the first initial value in a statistical sense, so that the first station can complete backoff and then perform random access faster than the second station, the first station obtains more uplink multi-user transmission opportunities, and the success probability of completing uplink transmission by the scheduled station with random access capability through the random access resources allocated by the scheduling station is improved.

S402, the scheduling station sends the information of the first contention window and the information of the second contention window.

In S402, the scheduling station may bear the information of the first contention window and the information of the second contention window in one of the following frames for transmission: control frames, management frames, or data frames. The management frame may be a scheduling negotiation frame, a scheduling response frame, a beacon frame, an association response frame, a re-association response frame, or a probe response frame.

It should be noted that in S401 and S402, the scheduling station may also generate and transmit one of the information of the first contention window and the information of the second contention window. In the case that the scheduling station generates and transmits only the information of the first contention window, the information of the first contention window needs to satisfy: compared with the second station, the first station randomly generates the first initial value of the backoff counter according to the information of the first contention window, so that the first station can complete backoff more quickly. In the case that the scheduling station generates and transmits only the information of the second contention window, the information of the second contention window needs to satisfy: compared with the first station, the second station randomly generates the second initial value of the backoff counter according to the information of the second contention window, so that the second station can complete backoff more slowly.

In this embodiment, the uplink multi-user transmission may be uplink OFDMA transmission, uplink MIMO transmission, uplink SDMA transmission, or the like.

S403, after receiving the information of the first contention window, the first station performs random access in the random access resource allocated by the scheduling station according to the information of the first contention window.

S404, after receiving the information of the first contention window, the second station performs random access in the random access resource allocated by the scheduling station according to the information of the second contention window.

S403 and S404 occur in a scheduling period of the first station, the first station changes from a sleep state to an awake state when entering the scheduling period, at this time, the first station needs to send an uplink transmission frame, and the second station may also need to send the uplink transmission frame in the scheduling period of the first station, so that both the first station and the second station need to preempt a random access resource allocated by the scheduling station in a contention manner to perform random access. In this embodiment, the first station and the second station respectively compete for the random access resource allocated by the scheduling station based on the information of the first contention window and the information of the second contention window indicated by the scheduling station.

It should be noted that, in this embodiment, both the process of scheduling the first station by the scheduling station and the process of allocating the random access resource by the scheduling station are the prior art, and details are not described here.

In the method for random access provided in this embodiment, a scheduling station generates and sends information of a first contention window and information of the first contention window, where the first contention window is a contention window for a first station to perform random access in channel resources allocated by the scheduling station, the second contention window is a contention window for a second station to perform random access in channel resources allocated by the scheduling station, and the information of the contention window may include information of a maximum value, a minimum value, and the like of the contention window. In a scheduling period of a first station, the first station randomly generates a first initial value of a backoff counter according to a contention window indicated by information of a first contention window, and the first station performs random access in random access resources distributed by the scheduling station after backoff is completed according to the first initial value; and in the scheduling period of the first station, the second station randomly generates a second initial value of the backoff counter according to the contention window indicated by the information of the second contention window, and the second station completes backoff according to the second initial value and then performs random access in random access resources distributed by the scheduling station. Under the condition that the information of the first contention window and the information of the second contention window need to meet the above conditions, the first initial value is smaller than the first initial value in a statistical sense, so that the first station can complete backoff and then perform random access faster than the second station, so that the first station obtains more uplink multi-user transmission opportunities, and further improves the success probability of completing uplink transmission by the scheduled station with random access capability through the random access resources allocated by the scheduling station.

EXAMPLE III

Based on the same inventive concept, an embodiment of the present invention further provides a scheduling station, where the scheduling station may use the method of the scheduling station side in the method provided in the first embodiment, and as shown in fig. 5, the scheduling station 500 includes: a processing unit 501 and a transceiving unit 502. Wherein,

a processing unit 501, configured to generate resource information and site information, where the resource information is used to indicate a channel resource allocated by a scheduling site 500, and the site information is used to indicate that the channel resource is a random access resource of a first site, so that a second site identifies that the channel resource is a resource allocated to a site other than the second site, where the first site is all or part of all sites scheduled by the scheduling site 500 and has a random access capability, and the second site is a site other than the first site in all sites having the random access capability;

a transceiving unit 502, configured to send the resource information and the station information generated by the processing unit 501, so that the first station performs random access using the channel resource indicated by the resource information.

In one implementation, the transceiving unit 502 is specifically configured to:

and sending a trigger message comprising resource information and site information in a scheduling period of the first site, wherein the trigger message is used for triggering multi-user uplink transmission.

In one implementation, the resource information is carried in a resource block allocation field in the resource allocation record of the trigger message, and the site information is carried in a site identification field in the resource allocation record of the trigger message; or,

In one implementation, the station information includes a preset value for indicating that the channel resource is a random access resource of the first station.

In one implementation, the transceiving unit 502 is further configured to:

before the processing unit 501 generates the resource information and the site information, the preset value is sent through one of the following messages: a broadcast message, a query response message, an association response message, a re-association response message, and a target wake-up time response message.

It should be noted that the description is omitted here. The division of the unit in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Based on the same inventive concept, an embodiment of the present invention further provides a scheduling station, where the scheduling station may adopt the method of the scheduling station side in the method provided in the first embodiment, and may be the same device as the scheduling station shown in fig. 5. Referring to fig. 6, the scheduling station 600 includes: a processor 601, a transceiver 602, a bus 603, and a memory 604, wherein:

the processor 601, configured to read the program in the memory 603, executes the following processes:

a processor 601, configured to generate resource information and site information, where the resource information is used to indicate a channel resource allocated by the scheduling site 600, and the site information is used to indicate that the channel resource is a random access resource of a first site, so that a second site identifies that the channel resource is a resource allocated to a site other than the second site, where the first site is all or part of all sites scheduled by the scheduling site 600 with a random access capability, and the second site is a site other than the first site in all sites with the random access capability;

the processor 601 is further configured to transmit the resource information and the station information through the transceiver 602, so that the first station performs random access using the channel resource indicated by the resource information.

In one implementation, when the processor 601 sends the resource information and the station information through the transceiver 602, it is specifically configured to:

In one implementation, the processor 601 is further configured to:

prior to generating the resource information and the site information, the preset value is sent by the transceiver 602 through one of the following messages: a broadcast message, a query response message, an association response message, a re-association response message, and a target wake-up time response message.

A transceiver 602 for receiving and transmitting data under the control of the processor.

The processor 601, the transceiver 602, and the memory 604 are connected to each other by a bus 603; the bus 603 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc.

Where in fig. 6 the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by processor 601 and various circuits of memory represented by memory 604 linked together. The bus architecture 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. The bus interface provides an interface. The transceiver 602 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 601 is responsible for managing the bus architecture and general processing, and the memory 604 may store data used by the processor 601 in performing operations.

The processor 601 may be a central processing unit, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD).

The present embodiment also provides a computer storage medium for storing computer software instructions for the scheduling station according to the foregoing embodiment, which includes a program designed to execute the foregoing embodiment.

Example four

Based on the same inventive concept, an embodiment of the present invention further provides a station, where the station may use the method of the first station or the second station in the method provided in the first embodiment, and referring to fig. 7, a station 700 includes: a transceiver unit 701 and a processing unit 702. Wherein,

a transceiver 701, configured to receive resource information and site information sent by a scheduling site, where the resource information is used to indicate a channel resource allocated by the scheduling site, and the site information is used to indicate that the channel resource is a random access resource of a first site, so that a second site identifies that the channel resource is a resource allocated to a site other than the second site, where the first site is all or part of all sites scheduled by the scheduling site with a random access capability, and the second site is a site other than the first site in all sites with the random access capability;

a processing unit 702, configured to, when the station 700 is a first station, control the first station to perform random access within the channel resource indicated by the resource information according to the indication of the station information received by the transceiver unit 701; when the station 700 is a second station, it is determined that the second station does not perform random access within the channel resources indicated by the resource information, according to the indication of the station information.

In one implementation, the transceiving unit 701 is specifically configured to:

and receiving a trigger message which is sent by the scheduling station in the scheduling period of the first station and comprises resource information and station information.

In one implementation, the transceiving unit 701 is further configured to:

before receiving the resource information and the station information sent by the scheduling station, receiving a preset value sent by the scheduling station through one of the following messages: a broadcast message, a query response message, an association response message, a re-association response message, and a target wake-up time response message.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Based on the same inventive concept, the embodiment of the present invention further provides a station, which may adopt the method of the first station or the second station in the method provided in the first embodiment, and may be the same device as the station shown in fig. 7. Referring to fig. 8, the station 800 includes: a processor 801, a transceiver 802, a bus 803, and a memory 804, wherein:

a processor 801 for reading the program in the memory 803, and executing the following processes:

a processor 801, configured to receive, by a transceiver 802, resource information and site information sent by a scheduling site, where the resource information is used to indicate a channel resource allocated by the scheduling site, and the site information is used to indicate that the channel resource is a random access resource of a first site, so that a second site identifies that the channel resource is a resource allocated to a site other than the second site, where the first site is all or part of all sites scheduled by the scheduling site with a random access capability, and the second site is a site other than the first site in all sites with the random access capability;

processor 801, further configured to, if station 800 is a first station, according to the indication of the received station information, control the first station to perform random access within the channel resource indicated by the resource information; when the station 800 is a second station, it is determined that the second station does not perform random access within the channel resources indicated by the resource information, according to the indication of the station information.

In one implementation, the processor 801 receives, through the transceiver 802, the resource information and the station information sent by the scheduling station, and is specifically configured to:

In one implementation, the processor 801 is further configured to:

before receiving the resource information and the station information sent by the scheduling station through the transceiver 802, receiving, through the transceiver 802, a preset value sent by the scheduling station through one of the following messages: a broadcast message, a query response message, an association response message, a re-association response message, and a target wake-up time response message.

A transceiver 802 for receiving and transmitting data under the control of the processor 801.

The processor 801, the transceiver 802, and the memory 804 are interconnected by a bus 803; the bus 803 may be a PCI bus or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc.

Where in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 801, and various circuits, represented by the memory 804, being linked together. The bus architecture 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. The bus interface provides an interface. The transceiver 802 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 801 is responsible for managing the bus architecture and general processing, and the memory 804 may store data used by the processor 801 in performing operations.

Processor 804 may be a central processor, ASIC, FPGA, or CPLD.

The present embodiment also provides a computer storage medium for storing computer software instructions for the station described in the above embodiments, which includes a program designed to execute the above embodiments.

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, CD-ROM, 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.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments 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 encompass such modifications and variations.

Claims

1. A random access method, comprising:

2. The method of claim 1, wherein the scheduling station transmitting the resource information and the station information comprises:

3. The method of claim 2, wherein the resource information is carried in a resource block allocation field in a resource allocation record of the trigger message, and the station information is carried in a station identification field in the resource allocation record of the trigger message; or,

4. A method according to any one of claims 1 to 3, wherein the station information comprises a preset value for indicating that the channel resource is a random access resource of the first station.

5. The method of claim 4, before the scheduling station generating the resource information and the station information, further comprising:

6. A random access method, comprising:

7. The method of claim 6, wherein the station receiving the resource information and the station information transmitted by the scheduling station comprises:

8. The method of claim 7, wherein the resource information is carried in a resource block allocation field in a resource allocation record of the trigger message, and the station information is carried in a station identification field in the resource allocation record of the trigger message; or,

9. The method according to any of claims 6 to 8, wherein the station information comprises a preset value for indicating that the channel resource is a random access resource of the first station.

10. The method of claim 9, wherein before the station receives the resource information and the station information transmitted by the scheduling station, further comprising:

the station receives the preset value sent by the scheduling station through one of the following messages: a broadcast message, a query response message, an association response message, a re-association response message, and a target wake-up time response message.

11. A scheduling station, comprising:

12. The scheduling station of claim 11, wherein the transceiver unit is specifically configured to:

13. The scheduling station of claim 12, wherein the resource information is carried in a resource block allocation field in a resource allocation record of the trigger message, and the station information is carried in a station identification field in the resource allocation record of the trigger message; or,

14. The scheduling station of any of claims 11 to 13 wherein the station information comprises a preset value for indicating that the channel resource is a random access resource of the first station.

15. The scheduling station of claim 14, wherein the transceiver unit is further configured to:

16. A station, comprising:

17. The station according to claim 16, wherein the transceiver unit is specifically configured to:

18. The station of claim 17, wherein the resource information is carried in a resource block allocation field in a resource allocation record of the trigger message, and wherein the station information is carried in a station identification field in the resource allocation record of the trigger message; or,

19. A station as claimed in any one of claims 16 to 18, wherein the station information includes a preset value for indicating that the channel resource is a random access resource of the first station.

20. The station of claim 19, wherein the transceiver unit is further configured to:

21. A scheduling station comprising a processor, a transceiver, and a memory, wherein:

the memory is used for storing programs executed by the processor;

the processor is used for executing the following operations according to the program stored in the memory:

generating resource information and site information, wherein the resource information is used for indicating channel resources allocated by the scheduling site, the site information is used for indicating that the channel resources are random access resources of a first site, so that a second site identifies that the channel resources are resources allocated to sites other than the second site for use, the first site refers to all or part of all sites with random access capability scheduled by the scheduling site, and the second site refers to sites other than the first site in all sites with random access capability;

the transceiver is configured to send the resource information and the station information generated by the processor, so that the first station performs random access using the channel resource indicated by the resource information.

22. The scheduling station of claim 21, wherein the transceiver is specifically configured to:

23. The scheduling station of claim 22, wherein the resource information is carried in a resource block allocation field in a resource allocation record of the trigger message, and wherein the station information is carried in a station identification field in the resource allocation record of the trigger message; or,

24. The scheduling station of any of claims 21 to 23 wherein the station information comprises a preset value for indicating that the channel resource is a random access resource of the first station.

25. The scheduling station of claim 24 wherein the transceiver is further configured to:

before the processor generates the resource information and the site information, the preset value is sent through one of the following messages: a broadcast message, a query response message, an association response message, a re-association response message, and a target wake-up time response message.

26. A station comprising a transceiver, a processor, and a memory, wherein:

the memory is used for storing programs executed by the processor;

the transceiver is configured to receive resource information and site information sent by a scheduling site, where the resource information is used to indicate a channel resource allocated by the scheduling site, and the site information is used to indicate that the channel resource is a random access resource of a first site, so that a second site identifies that the channel resource is a resource allocated to a site other than the second site, where the first site is all or part of all sites scheduled by the scheduling site and having a random access capability, and the second site is a site other than the first site in all sites having a random access capability;

when the station is the first station, controlling the first station to carry out random access in the channel resource indicated by the resource information according to the indication of the station information received by the transceiver; and when the station is the second station, determining that the second station does not perform random access in the channel resources indicated by the resource information according to the indication of the station information.

27. The station of claim 26, wherein the transceiver is specifically configured to:

28. The station of claim 27, wherein the resource information is carried in a resource block allocation field in a resource allocation record of the trigger message, and wherein the station information is carried in a station identification field in the resource allocation record of the trigger message; or,

29. A station as claimed in any one of claims 26 to 28, wherein the station information includes a preset value for indicating that the channel resource is a random access resource of the first station.

30. The station of claim 29, wherein the transceiver is further configured to: