WO2016155218A1

WO2016155218A1 - Method and device for sending wireless frames

Info

Publication number: WO2016155218A1
Application number: PCT/CN2015/088168
Authority: WO
Inventors: 吕开颖; 孙波; 韩志强; 邢卫民; 芮华
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-03-30
Filing date: 2015-08-26
Publication date: 2016-10-06
Also published as: CN106162918A

Abstract

The present invention provides a method and device for sending wireless frames. The method comprises that: a first station divides one or multiple predetermined intervals or one or multiple predetermined periods in a predetermined interval into a predetermined number of contention access intervals, wherein the contention access intervals are used for contending to send a first wireless frame by a first station and/or contending to send a second wireless frame by one or multiple second stations; the first station classifies the contention access intervals into access levels; the first station informs the second station of an indication message, wherein the indication message comprises the information of the classified access level of the contention access intervals and the access level information is used to assist the second station to select the contention access interval used for contending to send the second wireless frame. Solved is the problem in relevant technologies of poor control ability of a station, and achieved is the effect of improving control ability of the station.

Description

Wireless frame transmission method and device

Technical field

The present invention relates to the field of communications, and in particular to a method and an apparatus for transmitting a radio frame.

Background technique

At present, with the explosive application of the Wireless Local Area Network (WLAN) network, the deployment of the WLAN network is increasingly dense, and the network load is also increasing, and as the network increases, the network coverage overlaps. More serious, the efficiency of the WLAN network will show a significant decline, simply increasing the rate does not solve the problem. Therefore, the IEEE Standards Organization has set up a related task force to address the WLAN network efficiency problem. Among them, improving the user experience is an important goal. How to guarantee the quality of service for users or services has caused widespread concern and research.

In the related art, an access point (AP) and a plurality of stations (Stations, referred to as STAs) associated with the AP form a basic service set (BSS), as shown in the figure. 1 is a block diagram showing the structure of a WLAN basic service set BSS in the related art. IEEE 802.11 defines two modes of operation: distributed coordination function (DCF) and point coordination function (PCF), and improvements for these two modes of operation: enhanced distribution Enhanced distributed channel access (EDCA) and hybrid coordination function controlled channel access (HCCA). Among them, DCF is the most basic mode of operation, using CSMA/CA (CSMA with Collision Avoidance) with collision avoidance to make multiple stations share wireless channels. The EDCA is an enhanced mode of operation. The CSMA/CA mechanism is used to enable multiple access priorities (Access Categories, AC for short) to share a wireless channel and to reserve a transmission opportunity (Transmission Opportunity, referred to as TXOP). The related technologies are divided into four different AC levels, which correspond to video services (AC-VIDEO, AC-VI for short), voice services AC-VO (AC-VOICE, AC-VO for short), and background services (AC- BACKGROUD (AC-BK for short), best-effort business (AC-BEST EFFORT, AC-BE for short). Each AC level corresponds to a set of EDCA contention access parameters, including an arbitration frame interval, a competition backoff window parameter, and the like. The higher the AC level, the smaller the value range of the parameters of the competition backoff window, thus ensuring a higher probability of competing for the transmission opportunity. However, in a dense deployment scenario, due to the increase in the number of users, the competition collision is intensified. In the related art, the AP has limited ability to control resources, and different users cannot distinguish user categories. Only service categories are divided, so WLAN is for users/ Service priority and quality of service QoS are difficult to guarantee effectively. How to further improve the AP's control ability to use resources reasonably and ensure service quality is an urgent problem to be solved.

An effective solution has not been proposed for the problem that the control capability of the site existing in the related art is low.

Summary of the invention

The present invention provides a radio frame transmission method and apparatus to at least solve the control energy of a station existing in the related art. The problem of lower power.

According to an aspect of the present invention, a radio frame transmitting method is provided, including: a first station dividing one or more predetermined intervals or one or more predetermined time periods within the predetermined interval into a predetermined number of competing accesses a time interval, wherein the contention access time interval is used by the first station to contend for transmitting a first radio frame and/or for one or more second stations to contend for transmitting a second radio frame; The contention access time interval is divided into access levels; the first station notifies the second station of the indication message, where the indication message includes the allocated access level information of the contention access time interval. The access level information is used to assist the second station to select a contention access time interval used when the second radio frame is contending for transmission.

Optionally, the access level information is used to assist the second station to select to contend for the contention time interval used for sending the second radio frame, where the access level information is used to assist the second The station selects a contention access time interval corresponding to an access level of the second radio frame, where an access level of the second radio frame is a user class, a service class, and a quality of service QoS of the second station At least one of the parameters is determined.

Optionally, the first station notifying the second station to the second station includes at least one of: the first station will contend for a time interval combination pattern and/or the contention access time interval And the access level information of the combined pattern is notified to the second station, where the contention combination time interval combination pattern is composed of a predetermined location and a number of contention access time intervals; the first station will compete for access time intervals. And/or the access level information of the contention access time interval is notified to the second station.

Optionally, the notifying, by the first station, the indication message to the second station includes: the first station notifying the indication message to the second station by means of a broadcast.

Optionally, the access level information includes at least one of: a competition access time interval combination pattern and/or a service category corresponding to an access level of the contention access time interval, a competition access time interval combination pattern, and a comprehensive metric of the service category and the user category corresponding to the user class, the contention access time interval combination pattern, and/or the access level of the contention access time interval corresponding to the access level of the contention access time interval, a comprehensive metric of a service access time interval combination pattern and/or an access level of the contention access time interval corresponding to a service class, a user class, and a QoS parameter, wherein the contention combination time interval combination pattern is determined by a predetermined location and The number of competing access time intervals is composed.

Optionally, the indication message further includes at least one of the following: time length information of the contention access time interval, number information of the contention access time interval, and time slot in the contention access time interval. The allocation quantity information, the contention access transmission mode information of the contention access time interval, and the parameter configuration validity period information of the contention access time interval.

Optionally, after the first station notifies the second station of the indication message, the method further includes: the first station receiving, by the second station, the access level is less than or equal to the second radio frame. The second access radio frame is contending for the second radio frame of the access level.

Optionally, the contention of the contending access in the contending access time interval is configured by the first station, and the contending access transmission mode includes at least one of the following: uplink contending access transmission and downlink contending access transmission. And uplink and downlink competition access transmission.

Optionally, after the first station divides one or more of the predetermined intervals or one or more of the predetermined time periods within the predetermined interval into a predetermined number of contention access time intervals, the first station further includes: The first station divides the contention access time interval of the contention access transmission mode into uplink contention access transmission into two or more time slots, wherein the two or more time slots are used for the second station Selecting a time slot randomly among two or more time slots and contending to transmit the second radio frame after starting the randomly selected time slot, or the two or more time slots are used for the second station Competing to transmit the second radio frame after the start of the time slot notified by the first station, or the two or more time slots for the second station to contend for transmitting the second radio frame after starting the predetermined time slot Or, in the case that the contention access transmission mode of the contention access time interval is uplink and downlink contention access transmission, the first station divides the contention access time interval into two or more time slots. Where the two The upper time slot is used by the first station and/or the second station to randomly select a time slot from the two or more time slots and contend for transmitting the first wireless frame after starting the randomly selected time slot And/or the second radio frame, or the two or more time slots for the first station and/or the second station to contend to send the first after the start of the time slot notified by the first station a radio frame and/or the second radio frame, or the two or more time slots for the first station and/or the second station to contend for transmitting the first radio frame and after a predetermined time slot begins / or the second radio frame, wherein the first radio frame is transmitted by the first station.

Optionally, when the contention access transmission mode in the contention access time interval is a downlink contention access transmission and/or an uplink and downlink contention access transmission, the method further includes: the first station is selected to be used for The first station contends for a contention access time interval used when the first radio frame is sent; the first station uses an enhanced distributed coordinated access function EDCA to contend for transmission in the selected contention time interval. The first radio frame.

Optionally, the method further includes: when the contention access transmission mode in the contention access time interval is uplink contention access transmission or uplink and downlink contention access transmission, the second station adopts enhanced distributed The coordinated access function EDCA competes to transmit the second radio frame.

Optionally, after the first station divides the access level for the contention access time interval, the method further includes: the first station receiving a request radio frame sent by the second station, where the request radio frame Carrying at least one of a user category, a service class, and a service quality of service QoS parameter of the second site, where the request radio frame is used to request the first site to indicate the second site for selection Competing for a contention access time interval used by the second radio frame; the first station indicating one or more competing access time interval combination patterns for the second station according to the request radio frame of the second station And/or one or more contention access time intervals; the first station sends a response frame to the second station, where the response frame carries the one or more contention access time intervals indicated Access level information of the combined pattern and/or the contention access time interval combination pattern, and/or the access level of the one or more contention access time intervals and/or the contention access time interval information.

Optionally, the response frame further includes at least one of the following information: time length information of the contention access time interval, number of content of the contention access time interval, and time in the contention access time interval. The slot allocation quantity information, the contention access transmission mode information of the contention access time interval, and the parameter configuration validity period information of the contention access time interval.

Optionally, after the first station divides the access level for the contention access time interval, the method further includes: the first station updates the indication message; and the first station sends the updated indication message to The second site.

According to another aspect of the present invention, a method for transmitting a radio frame includes: receiving, by a second station, an indication message of a first station notification, wherein the indication message includes the first station to have one or more reservations Interval or one or more predetermined time periods within the predetermined interval are divided into access level information of a predetermined number of contention access time intervals; the second station selects to contend for transmitting the second radio frame according to the indication message a contention access time interval used; the second station contends to transmit the second radio frame on the selected contention access time interval.

Optionally, the second station selects, according to the indication message, a contention time interval used by the second radio station to be contending for the second radio frame, and the second station selects, according to the access level information, the And an access access time interval corresponding to the access level of the second radio frame, where the access level of the second radio frame is determined by at least one of a user category, a service category, and a quality of service QoS parameter of the second station.

Optionally, the second station selects a contention time interval corresponding to the access level of the second radio frame according to the access level information, where the second station is configured according to the access level information. A contention access time interval in which the access level is less than or equal to the access level of the second radio frame is selected.

Optionally, the access level information of the contention access time interval includes at least one of: a contention access time interval combination pattern composed of a predetermined position and a number of contention access time intervals, and/or the contention access. Access level information of the time interval combination pattern; access level information of the contention access time interval and/or the contention access time interval.

Optionally, the receiving, by the second station, the indication message of the first station notification comprises: receiving, by the second station, the indication message of the first station notification by receiving a broadcast message.

Optionally, the second station contending to send the second radio frame on the selected contention access time interval includes: the second station determines that the first station will compete for access transmission mode as uplink competition Two or more time slots of a contention access time interval for access transmission and/or uplink and downlink contention access transmission; the second station randomly selects time slots from the two or more time slots and is random Competing to transmit the second radio frame after the selected time slot starts, or the two or more time slots are used by the second station to contend to send the first time after the time slot notified by the first station starts Two radio frames, Or the two or more time slots are used by the second station to contend for transmitting the second radio frame after a predetermined time slot begins.

Optionally, the second station contending to send the second radio frame on the selected contention access time interval includes: the second station in the contention access transmission mode is uplink contention access transmission and/or The enhanced distributed cooperative access function EDCA competes to transmit the second radio frame in the contention access time interval of the uplink and downlink contention access transmission.

Optionally, the method further includes: the second station sending, to the first station, a request for the first station to indicate, for the second station, a contention for contention for sending the second radio frame. a requesting radio frame of the time interval, wherein the radio frame request message carries at least one of the following: a user category of the second site, a service class of the second site, and a service of the second site a quality of service QoS parameter; the second station receives the response frame sent by the first station, where the response frame carries the first site according to the user category, service category, and service service of the second site. At least one of the quality QoS parameters indicates the contention access time combination pattern selected by the second station and/or the access level information of the contention access time interval combination pattern, and/or the contention time interval and / or access level information of the contention access time interval.

Optionally, the method further includes: the second station receiving the updated indication message sent by the first station.

According to another aspect of the present invention, there is provided a radio frame transmitting apparatus, the apparatus being applied to a first station, comprising: a first dividing module configured to set one or more predetermined intervals or within the predetermined interval The one or more predetermined time periods are divided into a predetermined number of contention access time intervals, wherein the contention access time interval is used by the first station to contend for transmitting the first radio frame and/or for one or more The second station contends to send the second radio frame; the second dividing module is configured to divide the access level for the contention access time interval; the notification module is configured to notify the second station of the indication message, where the indication The message includes the access level information of the contention access time interval, where the access level information is used to assist the second station to select a contention access time interval used by the second radio frame.

Optionally, the apparatus further includes: a first receiving module, configured to receive, by the second station, a contention competition interval on an access access time interval in which an access level is less than or equal to an access level of the second radio frame The second radio frame.

According to another aspect of the present invention, there is provided a radio frame transmitting apparatus, the apparatus being applied to a second station, comprising: a second receiving module, configured to receive an indication message of a first station notification, wherein the indication The message includes access level information of the predetermined number of contention access time intervals in which the first station divides one or more predetermined intervals or one or more predetermined time periods within the predetermined interval; a selection module, setting And selecting, according to the indication message, a contention access time interval used for contending to send the second radio frame; and sending, configured to select the contention time interval of the competition The second radio frame is sent over the contention.

Optionally, the selecting module includes: a selecting unit, configured to select, according to the access level information, a contention access time interval corresponding to an access level of the second radio frame, where the second wireless The access level of the frame is determined by at least one of a user class, a service class, and a quality of service QoS parameter of the second site.

Optionally, the selecting unit includes: selecting, according to the access level information, a contention access time interval in which an access level is less than or equal to an access level of the second radio frame.

With the present invention, the first station is used to divide one or more predetermined intervals or one or more predetermined time periods within the predetermined interval into a predetermined number of contention access time intervals, wherein the contention access time interval is used by Competing for transmitting the first radio frame at the first station and/or for transmitting the second radio frame for one or more second stations; the first station dividing the access level for the contention access time interval; The first station notifies the second station of the indication message, where the indication message includes the access level information of the contention access time interval, where the access level information is used to assist the The second station selects the contention time interval used by the second radio frame to solve the problem that the control capability of the station existing in the related art is low, thereby achieving the effect of improving the control capability of the station.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a structural block diagram of a WLAN basic service set BSS in the related art;

2 is a flowchart of a first method for transmitting a radio frame according to an embodiment of the present invention;

FIG. 3 is a flowchart of a second method for transmitting a radio frame according to an embodiment of the present invention; FIG.

4 is a block diagram showing the structure of a first radio frame transmitting apparatus according to an embodiment of the present invention;

FIG. 5 is a block diagram showing a preferred structure of a first radio frame transmitting apparatus according to an embodiment of the present invention; FIG.

FIG. 6 is a structural block diagram of a second radio frame transmitting apparatus according to an embodiment of the present invention; FIG.

FIG. 7 is a structural block diagram of a selection module 64 in a second type of radio frame transmitting apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a contention time division division and a combination pattern according to a first embodiment of the present invention; FIG.

9 is a schematic diagram of a contention time interval configuration information cell according to a first embodiment of the present invention;

FIG. 10 is a flowchart of a contention time interval allocation according to a first embodiment of the present invention; FIG.

11 is a schematic diagram of a contention time division division and a pattern of a contention access according to Embodiment 3 of the present invention;

FIG. 12 is a flowchart of a contention time interval allocation of a contention access according to Embodiment 3 of the present invention; FIG.

FIG. 13 is a schematic diagram of a contention time division division and pattern of a contention access according to Embodiment 6 of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

A method for transmitting a radio frame is provided in this embodiment. FIG. 2 is a flowchart of a method for transmitting a radio frame according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:

Step S202, the first station divides one or more predetermined time intervals in the one or more predetermined intervals or predetermined intervals into a predetermined number of contention access time intervals, wherein the contention access time interval is used for the first station competition. Transmitting a first radio frame and/or for one or more second stations to contend to transmit a second radio frame;

Step S204, the first station divides the access level for the contention time interval of the competition;

In step S206, the first station notifies the second station of the indication message, where the indication message includes the access level information of the divided contention access time interval, and the access level information is used to assist the second station to select the contention transmission. The contention time interval used for the second radio frame.

Through the above steps, the first station divides the predetermined interval and the predetermined time period within the predetermined interval into multiple contention access time intervals, and configures different levels for different contention time intervals, so that the second station can select Different levels of competitive access time intervals solve the problem of low controllability of the sites existing in the related art, thereby achieving the effect of improving the control capability of the site.

The access level information used to assist the second station to select to contend for sending the second radio frame includes: the access level information is used to assist the second station to select the second radio frame. The contending competition access time interval, wherein the access level of the second radio frame is determined by at least one of a user category, a service category, and a quality of service QoS parameter of the second station.

In an optional embodiment, the first station notifying the second station of the indication message may include at least one of the following: the first station will contend for the access time interval combination pattern and/or the competition access time interval combination pattern. The grading information is notified to the second station, where the contending access time interval combination pattern is composed of a predetermined location and a number of contending access time intervals; the first station will contend for the access time interval and/or the contending access time interval. The access level information is notified to the second site. That is to say, when the first station classifies the contention time interval, the first station can divide an overall level of the competition access time interval, and can also divide the respective levels for the individual contention time intervals. This increases the flexibility of ranking.

The manner in which the first site sends the notification message to the second site may be multiple. In an optional embodiment, the indication message may be notified to the second site by means of a broadcast.

In an optional embodiment, the access level information may include at least one of the following: a competition access time interval combination pattern and/or a service category corresponding to an access level of the contention access time interval, and a contention time of the competition. Interval combination pattern Comprehensive metrics and contention of service categories and user categories corresponding to the user class corresponding to the access level of the contention access time interval, the competition access time interval combination pattern, and/or the access level of the contention access time interval A comprehensive metric of a service class, a user class, and a QoS parameter corresponding to an access level of the time interval combination pattern and/or the contention access time interval, wherein the contention access time combination pattern is composed of a predetermined location and a number of contention access times Interval composition.

In an optional embodiment, the foregoing indication message may further include at least one of the following: a time length information of a contention access time interval, a number of content of a contention access time interval, and a time slot in a contention access time interval. The allocation quantity information, the contention access transmission mode information of the contention access time interval, and the parameter configuration validity period information of the contention time interval.

The second station may select a contention access time interval that is less than or equal to the access level of the radio frame to be sent when the contention access time interval is selected. In an optional embodiment, the first station After the notification message is notified to the second station, the method further includes: the first station receiving, by the second station, the second radio frame contending for transmission on a contention access time interval in which the access level is less than or equal to the access level of the second radio frame. . Thereby, reasonable resources are configured for the radio frames of different access levels, thereby ensuring the quality of service.

The contending access transmission mode in the contending access time interval may be configured by the first station, and the first station may be configured with at least one of the following contending access transmission modes: uplink contention access transmission and downlink contention access transmission. And uplink and downlink competition access transmission. The uplink contention access transmission refers to that the second station competes for access to transmit and acquire transmission opportunities, and allows subsequent uplink and/or downlink transmission within the transmission opportunity; the downlink contention access transmission refers to competition by the first station. The access transmission acquires the transmission opportunity, and allows subsequent uplink and/or downlink transmission within the transmission opportunity; the downlink contention access transmission refers to the first or second station competing access to send and acquire the transmission opportunity, and at the transmission opportunity Subsequent upstream and/or downstream transmissions are allowed. In the data transmission in which the foregoing transmission mode is uplink contention access transmission, downlink contention access transmission, and uplink and downlink contention access transmission, the EDCA method can be directly used to compete for transmission data without competing according to the following time slots according to the division. send data. Of course, in a specific case, it is also possible to compete for transmission of data according to the divided time slots described below.

In an optional embodiment, after the first station divides one or more predetermined time intervals or one or more predetermined time periods within the predetermined interval into a predetermined number of contention access time intervals, the first station further includes: the first station Separating the contention access time interval of the contention access transmission mode into uplink contention access transmission into two or more time slots, wherein the two or more time slots are used for the second station to randomly select from more than two time slots Selecting a time slot and contending to transmit a second radio frame after the start of the randomly selected time slot, or two or more time slots for the second station to contend for transmitting the second radio frame after the start of the time slot notified by the first station, or two More than one time slot is used for the second station to contend for transmitting the second radio frame after the start of the predetermined time slot; or, in the case that the contention access transmission mode of the contention access time interval is the uplink and downlink contention access transmission, A station divides the contention access time interval into two or more time slots, wherein the two or more time slots are used when the first station and/or the second station randomly select from more than two time slots And contending to transmit the first radio frame and/or the second radio frame after the start of the randomly selected time slot, or more than two time slots for the time slot notified by the first station and/or the second station at the first station Competing to transmit the first radio frame and/or the second radio frame, or more than two time slots for the first station and/or the second station to contend for transmitting the first radio frame and/or after the start of the predetermined time slot a second radio frame, wherein the first radio frame is transmitted by the first station.

The foregoing method may further include: when the contention of the contending access in the contending access time interval is the downlink contending access transmission and/or the uplink and downlink contending access transmission, the method may include: When a radio frame is used The contention access time interval used by the first station to use the enhanced distributed coordinated access function EDCA to contend for transmitting the first radio frame within the selected contention access time interval.

When the contention access transmission mode in the contention access time interval is the uplink contention access transmission or the uplink and downlink contention access transmission, the second station uses the enhanced distributed coordinated access function EDCA to compete for the second wireless frame.

After the first site divides the access level for the contention time interval, the first station may further include: the first station receives the request radio frame sent by the second station, where the request radio frame carries the user category of the second station, At least one of a service class and a service quality of service QoS parameter, the request radio frame is used to request the first station to indicate, for the second station, a contention access time interval used for the selected contention to send the second radio frame; The station configures one or more contention access time interval combination patterns and/or one or more contention access time intervals for the second station according to the requesting radio frame of the second station; the first station sends a response frame to the second station, where The response frame carries the indicated access level information of one or more contention access time interval combination patterns and/or contention access time interval combination patterns, and/or one or more contention access time intervals and/or Or access level information of the contention access time interval.

The foregoing response frame further includes at least one of the following information: time length information of the contention access time interval, number of contention times of the contention access time interval, number of time slot allocation information in the contention time interval, and contention time interval of the competition access. The content of the competition access transmission mode information and the parameter configuration validity period of the competition access time interval.

In an optional embodiment, after the first site divides the access level for the contention access time interval, the method may further include: a first site update indication message; the first site sends the updated indication message to the second Site.

FIG. 3 is a flowchart of a second method for transmitting a radio frame according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:

Step S302, the second station receives the indication message of the first station notification, where the indication message includes a predetermined number of the first station dividing one or more predetermined time intervals or one or more predetermined time periods within the predetermined interval into the first station. Access level information of the competition access time interval;

Step S304, the second station selects a contention access time interval used by the second radio frame according to the indication message;

Step S306, the second station contends to send the second radio frame on the selected contention access time interval.

Through the above steps, the first station divides the predetermined time interval within the predetermined interval or the predetermined interval into multiple contention access time intervals, and configures different levels for different contention time intervals, so that the second station can select Different levels of competitive access time intervals solve the problem of low controllability of the sites existing in the related art, thereby achieving the effect of improving the control capability of the site.

The second station selects the contention access time interval used by the second radio frame according to the indication message, and the second station selects the contention access time corresponding to the access level of the second radio frame according to the access level information. An interval, wherein an access level of the second radio frame is determined by at least one of a user class, a service class, and a quality of service QoS parameter of the second site.

The second station may choose to contend for the contention time interval used for sending the second radio frame according to the indication message. The method includes: the second station selecting, according to the access level information, a contention access time interval in which the access level is less than or equal to the access level of the second radio frame. Therefore, the first station configures reasonable resources for the radio frames of different access levels, thereby ensuring the quality of service. For example, the access levels of the contention access time interval are divided into the following “set A”, “set A, B”, “set A, B, C”, if the access level of the second radio frame is "Set A" means that the second radio frame can contend for access in any of the above intervals, and the access level for the contention time interval is divided into "set A", that is, equal to the access level of the second radio frame. The access level for the contention time interval is divided into "set A, B" or "set A, B, C", that is, "less than" the access level of the second radio frame. That is, the second station may contend for transmitting the second radio frame on a contention access time interval in which the access level is less than the access level of the second radio frame.

In an optional embodiment, the access level information of the contention access time interval includes at least one of the following: a competition access time interval combination pattern composed of a predetermined location and a number of contention access time intervals, and/or Access level information of the competition access time interval combination pattern; access level information of the contention access time interval and/or the contention access time interval.

In an optional embodiment, the receiving, by the second station, the indication message of the first station notification may include: receiving, by the second station, the indication message of the first station notification by receiving the broadcast message, that is, the first station is sending When the message is indicated, it is sent by broadcast.

The foregoing access level information may include at least one of the following: a competition access time interval combination pattern and/or a service category corresponding to an access level of a contention access time interval, a contention time interval combination pattern, and/or a contention access. The comprehensive metric of the service category and user category corresponding to the user class corresponding to the access level of the time interval, the competition access time interval combination pattern, and/or the access level of the contention access time interval, and the competition access time interval combination pattern and/or Or a comprehensive metric of a service class, a user class, and a QoS parameter corresponding to an access level of the contending access time interval, where the contending access time interval combination pattern is composed of a predetermined location and a number of contention access time intervals.

The foregoing indication message may further include at least one of the following information: time length information of the contention access time interval, number of contention times of the contention access time interval, number of time slot allocation information in the contention time interval, and contention time of the competition. Interval competition access transmission mode information, parameter configuration validity period information of the competition access time interval.

The contending access transmission mode in the contending access time interval may be configured by the first site, and the contending access transmission mode includes at least one of the following: uplink contention access transmission, downlink contention access transmission, and uplink and downlink contention access. transmission.

In an optional embodiment, the foregoing second station contending to send the second radio frame on the selected contention access time interval includes: determining, by the second station, that the first station will contend for the access transmission mode as the uplink contention access transmission and / or two or more time slots divided by the contention time interval of the uplink and downlink contention access transmission; the second station randomly selects time slots from more than two time slots and contends to transmit after the start of the randomly selected time slot a second radio frame, or more than two time slots for the second station to contend for transmitting the second radio frame after the start of the time slot notified by the first station, or more than two time slots for the second station at a predetermined time The second radio frame is contending to be transmitted after the slot starts.

In an optional embodiment, the foregoing second station contending to send the second radio frame on the selected contention access time interval includes: the second station in the contention access transmission mode is uplink contention access transmission and/or upper and lower The enhanced distributed cooperative access function EDCA competes to transmit the second radio frame within the contention time interval of the contention access transmission.

In an optional embodiment, the method further includes: the second station sending, to the first station, a requesting wireless requesting the first station to indicate, for the second station, a contention time interval for competing to send the second radio frame. a frame, wherein the radio frame request message carries at least one of the following: a user category of the second site, a service class of the second site, and a service quality of service QoS parameter of the second site; the second site receives the first site And a response frame that is sent by the first station, according to at least one of a user category, a service category, and a service quality of service QoS parameter of the second station, indicating a contention pattern of the contention time interval selected by the second station. And/or the access level information of the contention time interval combination pattern, and/or the contention time interval of the contention access and/or the access level information of the contention access time interval.

The foregoing response frame may further include at least one of the following information: time length information of the contention access time interval, number of contention times of the contention access time interval, number of time slot allocation information in the contention time interval, and contention time of the competition. Interval competition access transmission mode information, parameter configuration validity period information of the competition access time interval.

In an optional embodiment, the foregoing method may further include: the second station receiving the updated indication message sent by the first station.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods of various embodiments of the present invention.

In the embodiment, a radio frame transmitting apparatus is further provided, which is used to implement the foregoing embodiments and preferred embodiments, and has not been described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

4 is a structural block diagram of a first radio frame transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 4, the apparatus may be applied to a first node, including a first dividing module 42, a second dividing module 44, and a notification. Module 46, the device will be described below.

The first dividing module 42 is configured to divide the one or more predetermined time intervals or one or more predetermined time periods in the predetermined interval into a predetermined number of contention access time intervals, wherein the contention access time interval is used for the first The station contends to send the first radio frame and/or for one or more second stations to contend to send the second radio frame; the second dividing module 44 is connected to the first dividing module 42 and is configured to divide the contention time interval. The access level; the notification module 46 is connected to the second dividing module 44, and is configured to notify the second station of the indication message, where the indication message includes the access level information of the divided contention access time interval, and the The ingress level information is used to assist the second station in selecting to contend for the contention access time interval used for transmitting the second radio frame.

In an optional embodiment, the access level information used to assist the second station to select to contend for the second access to the second radio frame may include: the access level information is used to assist the second station selection and the second a contention access interval corresponding to an access level of the second radio frame, where the access level of the second radio frame is determined by a user class of the second station, At least one of the service class and the quality of service QoS parameters is determined.

In an optional embodiment, the first station notifying the second station of the indication message may include at least one of the following: the first station will contend for the access time interval combination pattern and/or the competition access time interval combination pattern. The access level information is notified to the second station, wherein the contention access time combination pattern is composed of a predetermined location and a number of contention access time intervals; the first station will contend for the access time interval and/or the contention access time. The interval access level information is notified to the second site. That is to say, when the first station classifies the contention time interval, the first station can divide an overall level of the competition access time interval, and can also divide the respective levels for the individual contention time intervals. This increases the flexibility of ranking.

In an optional embodiment, the access level information may include at least one of the following: a competition access time interval combination pattern and/or a service category corresponding to an access level of the contention access time interval, and a contention time of the competition. a comprehensive metric of the service category and the user category corresponding to the user class, the contention access time interval combination pattern, and/or the access level of the contention access time interval corresponding to the access level of the interval combination pattern and/or the contention time interval of the contention, a comprehensive measure of the service class, the user class, and the QoS parameters corresponding to the access level of the contention combination time interval combination pattern and/or the contention time interval of the contention access, wherein the contention combination time pattern of the competition access time interval is competed by the predetermined location and quantity The access time interval is composed.

FIG. 5 is a block diagram of a preferred structure of a first type of radio frame transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 5, the apparatus includes a first receiving module 52, in addition to all the modules shown in FIG. The device will be described.

The first receiving module 52 is connected to the foregoing notification module 46, and is configured to receive a second radio frame that the second station contends to transmit on a contention access time interval in which the access level is less than or equal to the access level of the second radio frame.

The contending access transmission mode in the contending access time interval may be configured by the first station, and the first station may be configured with at least one of the following contending access transmission modes: uplink contention access transmission and downlink contention access transmission. And uplink and downlink competition access transmission.

In an optional embodiment, after the first station divides one or more predetermined time intervals or one or more predetermined time periods within the predetermined interval into a predetermined number of contention access time intervals, the first station further includes: the first station Separating the contention access time interval of the contention access transmission mode into uplink contention access transmission into two or more time slots, wherein the two or more time slots are used for the second station to randomly select from more than two time slots Select a time slot and contend for transmission after the start of a randomly selected time slot a second radio frame, or more than two time slots for the second station to contend for transmitting the second radio frame after the start of the time slot notified by the first station, or more than two time slots for the second station at a predetermined time After the slot starts to compete to send the second radio frame; or, in the case that the contention access transmission mode of the contention access time interval is the uplink and downlink contention access transmission, the first station divides the contention time interval into two or more. a time slot, wherein the two or more time slots are used by the first station and/or the second station to randomly select time slots from more than two time slots and contend for transmitting the first wireless frame after starting the randomly selected time slot And/or a second radio frame, or more than two time slots for the first station and/or the second station to contend for transmitting the first radio frame and/or the second radio frame after the start of the time slot notified by the first station, Or more than two time slots for the first station and/or the second station to contend for transmitting the first radio frame and/or the second radio frame after the start of the predetermined time slot, wherein the first radio frame is first Sent by the site.

The foregoing apparatus may further include: when the contention of the contending access in the contending access time interval is the downlink contending access transmission and/or the uplink and downlink contending access transmission, the first station is selected to be used for the first station to compete for the transmission. The contention access time interval used in a radio frame, the first station contends to transmit the first radio frame by using an enhanced distributed coordinated access function EDCA within the selected contention access time interval.

After the first site divides the access level for the contention time interval, the first station may further include: the first station receives the request radio frame sent by the second station, where the request radio frame carries the user category of the second station, At least one of a service class and a service quality of service QoS parameter, the request radio frame is used to request the first station to indicate, for the second station, a contention access time interval used for the selected contention to send the second radio frame; The station configures one or more contention access time interval combination patterns and/or one or more contention access time intervals for the second station according to the requesting radio frame of the second station; the first station sends a response frame to the second station, where And the response frame carries the indicated one or more contention access time interval combination patterns and/or the access level information of the contention access time interval combination pattern, and/or one or more contention access time intervals and / or access level information of the contention access time interval.

FIG. 6 is a structural block diagram of a second type of radio frame transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 6, the apparatus is applied to a second station, including a second receiving module 62, a selecting module 64, and a sending module 66. The device will be described below.

The second receiving module 62 is configured to receive an indication message of the first station notification, where the indication message includes a reservation that the first station divides one or more predetermined intervals or one or more predetermined time periods within the predetermined interval into the first station. a plurality of access level information of the contention access time interval; the selecting module 64 is connected to the receiving module 62, and is configured to select, according to the indication message, a contention access time interval used for contending to send the second radio frame; the sending module 66, the connection To the selection module 64 above, Set to contend for transmitting the second radio frame on the selected contention access time interval.

FIG. 7 is a structural block diagram of a selection module 64 in a second type of radio frame transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 7, the selecting module 64 includes a selecting unit 72, which will be described below.

The selecting unit 72 is configured to select, according to the access level information, a contention access time interval corresponding to the access level of the second radio frame, where the access level of the second radio frame is determined by the user class and service of the second station. At least one of the category and quality of service QoS parameters is determined.

The foregoing selecting unit 72 includes a contention access time interval for selecting an access level that is less than or equal to an access level of the second radio frame according to the access level information.

In an optional embodiment, the access level information of the contention access time interval includes at least one of the following: a competition access time interval combination pattern composed of a predetermined location and a number of contention access time intervals, and/or The access level information of the contention access time interval combination pattern; the contention access time interval and/or the access level information of the contention access time interval.

In an optional embodiment, the foregoing second station contends to send the second non-selection on the selected contention access time interval. The line frame includes: the second station contends to send the second radio frame by using the enhanced distributed coordinated access function EDCA in the contention access time interval in which the contention access transmission mode is the uplink contention access transmission and/or the uplink and downlink contention access transmission. .

In an optional embodiment, the foregoing apparatus further includes: the second station sending, to the first station, a request for requesting the first station to indicate, for the second station, a contention time interval for competing to send the second radio frame. a frame, wherein the radio frame request message carries at least one of the following: a user category of the second site, a service class of the second site, and a service quality of service QoS parameter of the second site; the second site receives the first site And a response frame that is sent by the first station, according to at least one of a user category, a service category, and a service quality of service QoS parameter of the second station, indicating a contention pattern of the contention time interval selected by the second station. And/or the access level information of the contention time interval combination pattern, and/or the contention time interval of the contention access and/or the access level information of the contention access time interval.

The present invention is described below by taking the predetermined interval as the beacon frame interval, the first station as the access point AP, and the second station as the station STA as an example:

Embodiment 1:

The AP divides the beacon interval (Beacon Interval) or the specified period into multiple time intervals. It is assumed that the AP divides the Beacon Interval into four time intervals, and each time interval can be equal or unequal. As shown in FIG. 8, FIG. 8 is a schematic diagram of a contention time division division and a combination pattern according to a first embodiment of the present invention. In Fig. 8, "1" indicates that it is allowed to be used, "0" indicates that it is not allowed to be used, and the pattern "1010" indicates the time interval for which the specific access level corresponds to the permitted use. The AP sends time interval configuration information (the same as the above-mentioned indication message) in the Beacon frame, such as the number of time intervals, the length of each time interval, and the like.

The AP combines each time interval in a certain format to form a plurality of patterns (combined with the above-mentioned competing access time interval patterns), and each pattern corresponds to a contention access time interval level. Each bit corresponds to a time interval. For example, it can be set that when its value takes “1”, it indicates that contention access can be performed within the time interval. When “0” is taken, it indicates that contention access cannot be performed within the time interval. The four time intervals are correspondingly represented by 4 bits, and a total of 16 combinations are formed. For example, "1010" indicates that competitive access is possible during the first and third time intervals.

If the system pre-defined the user category, the user category may correspond to the above-mentioned competitive access time interval level. The time interval configuration information in the beacon frame may also include a pattern corresponding to the user category. For example, the pattern corresponding to the high user category is “1111”, and the pattern corresponding to the low user category is “1010” or “0101”.

When the non-access site STA is associated with the AP and re-associated with the AP, the AP may further negotiate with the STA to allow the user to perform contention access according to the load condition of each user category (the same as the competitive access time interval combination pattern described above). ). The STA may indicate the requested time interval combination pattern or its user category in the association request, and the AP is in the association response. Confirm the time interval combination pattern assigned to the STA. The AP and the STA may also update the time interval pattern by transmitting a contention request frame according to a combination of service categories and/or user categories (of course, other combinations of service categories, user categories, and QoS parameters). The user's contention request frame may indicate a user category and/or one or more service categories, such as AC-VO, AC-VI, AC-BE, AC-BK, and the like. Each configuration corresponds to one or more corresponding service categories under the user category. For example, the AC-BE and AC-BK priority services correspond to the same time interval pattern.

As shown in FIG. 9, FIG. 9 is a schematic diagram of a contention time interval configuration information cell according to a first embodiment of the present invention. Access time interval level information for categories and/or service categories.

In order to avoid collisions caused by multiple stations scheduled to be in the same time interval at the beginning of the time interval, the AP may further divide each time interval into several time slots and time slots corresponding to the time intervals. The divided information is broadcast or unicast along with the time interval information.

After obtaining the time interval pattern configuration information and/or the time slot division information in the time interval, the STA starts to use the EDCA parameter of the AC corresponding to the AC to start the contention access in the configured time interval for allowing the contention access, or is configured in the time interval. The randomly selected time slot in the time interval for allowing the contention access to start the contention access by using the EDCA parameter of the transmission data corresponding to the AC.

The specific process is shown in FIG. 10. FIG. 10 is a flowchart of a contention time interval allocation according to the first embodiment of the present invention. As shown in FIG. 10, the process includes the following steps:

Step S1002, starting.

In step S1004, the AP divides the Beacon interval into a number of contention access time intervals.

Step S1006: The AP broadcasts the contention time interval configuration information in the Beacon frame.

In step S1008, the station 1 (same as the above STA) sends an association request frame and carries user category information and/or service category information or a requested contention access time interval pattern.

Step S1010: The AP sends an association response frame and carries contention time interval pattern information (for example, "1010").

In step S1012, it is determined whether the site 1 needs to adjust the contention access configuration information, and if the determination result is yes, the process goes to step S1014. Otherwise, the process goes to step S1016.

In step S1014, the station 1 transmits the resource request frame and carries the user category information and/or the service category information or the requested contention time interval pattern, and the process goes to step S1018.

In step S1016, it is determined whether the AP needs to adjust the contention access configuration information, and if the determination result is yes, the process goes to step S1018; otherwise, the process goes to step S1020.

Step S1018: The AP sends a resource request response frame and carries contention access time interval pattern information (for example, "1010").

In step S1020, the station 1 contends to send according to the EDCA parameters of the data to be sent within the allowed contention time interval.

Step S1022, ending.

Embodiment 2:

The AP divides the Beacon Interval into multiple time intervals, as shown in Figure 8, and combines each time interval in a certain format to form several patterns, each of which corresponds to a contention access. Interval level. In this embodiment, it is assumed that the AP divides the Beacon Interval into four time intervals, and each time interval may be equal or unequal. Each bit corresponds to a time interval, and a value of "1" indicates that contention access can be performed within the time interval, and a "0" indicates that contention access cannot be performed within the time interval. The four time intervals are correspondingly represented by 4 bits, and a total of 16 combinations are formed. For example, "1010" indicates that competitive access is possible during the first and third time intervals.

The AP configures the contention time interval of the corresponding AC in the EDCA parameter set. Alternatively, the AP and the STA negotiate a corresponding contention time interval interval pattern according to the service category. For example, the EDCA parameter set corresponding to the AC-VO includes the contention time interval pattern parameter. For example, "1111" indicates that the AC-VO type service can compete for access in four time intervals, and "1010" indicates that the AC-BE type service can be in the Competing access in the first and third time intervals; the AP may adjust the contention pattern of the competing access time interval according to the load of the different priority services, and broadcast or unicast in the system beacon frame or other management or control frame. .

When the STA has data to be sent, according to the contention time interval pattern corresponding to the AC to which the data belongs, the EDCA parameter corresponding to the AC is used for the contention access in the corresponding time interval. For example, if the service type of the data to be sent by STA1 is AC-VO, the EDCA parameters of the AC-VO can be used for contention access in all four time intervals. If the service type of the current data to be sent by STA2 is AC-VO, the EDCA parameters of the AC-BE may be used for the contention access in the first and third time intervals. In order to reduce the contention collision at the beginning of the same time interval, the STA may randomly select the time slot to start the contention access using the EDCA parameter corresponding to the AC of the transmission data within the time interval in which the contention is allowed to be accessed.

Embodiment 3:

11 is a schematic diagram of a contention interval and a pattern of contention access according to a third embodiment of the present invention. In FIG. 11, “access level 1” indicates that the access level is the first level, and only the data access of the highest access level is allowed to be sent. "Access Level 2" indicates that the access level is the second level, and only the access level is allowed to be the highest and the second level of data contention transmission; "Access Level 3" indicates that the access level is the third level, and only the access level is allowed. The entry level is the highest, second, and third levels of data contention transmission; "access level 4" indicates that the access level is the fourth level, allowing data of all access levels to be contending for transmission. The AP divides the beacon interval into multiple time intervals. As shown in FIG. 11 , the AP indicates the access level interval access level information for each time interval. The STAs of the information can only allow contention access during the time interval of the corresponding or lower contention access time interval level. For example, the AP divides the Beacon Interval into four time intervals, and the content of the contention access time interval is 1, 2, 3, and 4. The access level 1 of the contention access time interval indicates that only the service data of the highest access level STA can be sent for contention. The access level 2 of the contention access time interval indicates the service data of only the second priority STA or The service data higher than the second priority STA may be sent for contention. The access level 3 of the contention access time interval indicates that only the service data of the third priority STA or the service data of the third priority STA can be contentively transmitted. So on and so forth. The user's contention request frame may indicate a user category and/or one or more service categories, such as AC-VO, AC-VI, AC-BE, AC-BK, and the like. Each contention access time interval level corresponds to one or more user categories or one or more service categories or one or more service categories under the user category. For example, the AC-VO service priority corresponds to the contention access time interval level 1, the AC-VO+AC-BE service priority corresponds to the competition access time interval level 2, and the AC-VO+AC-BE+AC-BK priority service. Corresponding to the competition access time interval level 3. Alternatively, the AC-VO service priority corresponds to the contention access time interval level 1, and the AC-BE service priority corresponds to the contention access time interval level 2, wherein the contention access time interval level 2 allows the AC-VO service and the AC-BE service. The radio frame competing access means that the access level 2 is smaller than the access level 1.

In order to avoid collisions caused by multiple stations scheduled to be in the same time interval at the beginning of the time interval, the AP may further divide each time interval into several time slots and time slots corresponding to the time intervals. The divided information is broadcast or unicast along with the time interval information. The AP may adjust the contention level of the contention level and the time slot of the corresponding time interval according to different levels of user load and/or load of different priority services, and broadcast in system beacon frames or other management or control frames or Unicast transmission.

When the non-access site STA is associated with the AP and re-associated with the AP, the contention time interval corresponding to the STA may be negotiated according to the user category. The STA may indicate the user category in the association request and request to configure the contention time interval level, and the AP confirms the contention time interval of the competition access allocated to the STA in the association response. The AP and the STA may also reconfigure the contention time interval of the contention according to the user service class and/or the user class by sending a contention access time interval level request/response frame.

The STA performs contention access in the corresponding and lower time interval according to the configured or negotiated contention time interval level. For example, if the contention time interval of STA1 is the highest level, the EDCA access parameters of the AC corresponding to the data to be sent may be used for contention access in all four time intervals. If the contention time interval of the STA2 is the second level, the EDCA access parameter of the AC corresponding to the data to be sent may be used for contention access within the time interval of the contention time interval of the contention of the contention.

In order to reduce the contention collision at the beginning of the same time interval, the STA may randomly select the time slot to start the contention access using the EDCA parameter corresponding to the AC of the transmission data within the time interval in which the contention is allowed to be accessed.

FIG. 12 is a flowchart of a contention time interval allocation according to a third embodiment of the present invention. As shown in FIG. 12, the process includes the following steps:

Step S1202, starting;

Step S1204: The AP divides the Beacon frame interval into a number of contention access time intervals.

Step S1206: The AP broadcasts the contention time interval configuration information in the Beacon frame.

Step S1208: Site 1 (same as the above STA) sends an association request frame, and carries user category information or a requested contention access level (which may also carry a service category);

Step S1210, the AP sends an association response frame and carries the contention access level information "2";

In step S1212, it is determined whether the site 1 needs to adjust the contention access configuration information; if the determination result is yes, the process goes to step S1214, otherwise the process goes to step S1216;

Step S1214, the station 1 sends a resource request frame and carries the user category and/or service category information or the level of the requested contention access;

Step S1216, determining whether the AP needs to adjust the contention access configuration information; if the determination result is yes, go to step S1218, otherwise, go to step S1220;

Step S1218, the AP sends a resource request response frame and carries a contention access level "1";

Step S1220: Site 1 contends to send according to the EDCA parameter of the data to be sent on the time interval that the contention access level is greater than or equal to the contention time interval of the contention.

Step S1222, ending.

Embodiment 4:

The AP divides the beacon interval into multiple time intervals, as shown in Figure 11, and indicates the level of the contention access interval for each time interval. Only the STAs that meet the contention interval of the contention access can Competing access is allowed within the time interval of the corresponding and lower contention access time interval levels. For example, the AP divides the Beacon Interval into four time intervals, and the content of the contention access time interval is 1, 2, 3, and 4. The contention time interval 1 of the competition access indicates that only the highest user class and/or the service class STA can perform contention access. The competitive access time interval level 2 indicates that only STAs whose user category and/or service class are higher than the second priority can perform contention access. The competitive access time interval level 3 indicates that only STAs whose user class and/or service class is higher than the third priority can perform contention access. And so on.

The AP configures the contention time interval of the corresponding AC in the EDCA parameter set. Alternatively, the AP and the STA negotiate a corresponding contention level of the competition access according to the service category. The AP may adjust the contention level of the contention level and the time slot of the corresponding time interval according to different levels of user load and/or load of different priority services, and broadcast in system beacon frames or other management or control frames or Unicast transmission.

When the STA has data to be sent, according to the contention level of the contention access corresponding to the AC to which the data belongs, the EDCA parameter corresponding to the AC is used for the contention in the corresponding and lower time interval. For example, if the contention time interval corresponding to the service class of the data to be sent by STA1 is the highest level, the EDCA parameter corresponding to the AC of the sending data may be used for contention access in all four time intervals. The contending access time interval level corresponding to the service class of the data to be sent by STA2 is the second level, and the EDCA parameter corresponding to the AC of the sending data may be used for the contention access in the time interval of the contention time interval of the contention of the contending access time interval of 2 or less. . In order to reduce the interval at the same time At the beginning of the competition collision, the STA may randomly select the time slot to start the contention access by using the EDCA parameter of the AC corresponding to the AC in the time interval during which the contention is allowed to be accessed.

Embodiment 5:

The AP divides the Beacon Interval into a plurality of time intervals, as shown in FIG. 11, and indicates to each station STA the time interval configuration for which the contention access is allowed. For example, the AP divides the Beacon Interval into four time intervals, and the contention access time interval is 1, 2, 3, and 4. The STA may indicate its user class and/or service class and/or service quality of service QoS parameters in the association request frame or resource request frame, and configure a contention access time interval for a certain service class or service request. The time interval for the AP to indicate that STA1 is allowed to contend for access in the association response or resource request response frame is configured as "1, 4", indicating that the service data transmission of STA1 or STA1 is only allowed to start competing on time intervals 1 and 4. Access.

The AP may adjust the contention time interval configuration information according to the user load and/or the traffic load, and broadcast or unicast in the system beacon frame or other management or control frame.

When the STA has data to be sent, the EDCA parameters corresponding to the AC of the to-be-sent data are used for contention access in the corresponding access time interval according to the corresponding contention time interval. For example, if the contention time interval corresponding to the service of the data to be sent by the STA1 is the interval 4, the EDCA parameter corresponding to the AC of the transmission data may be used for the contention access in the fourth time interval. If the contention time interval of the STA2 is 2 and 3, the EDCA parameters of the AC corresponding to the AC may be used for the contention in the second and third contention access time intervals. In order to reduce the contention collision at the beginning of the same time interval, the STA may randomly select the time slot to start the contention access using the EDCA parameter corresponding to the AC of the transmission data within the time interval in which the contention is allowed to be accessed.

Example 6:

With the above-mentioned Embodiments 1 to 5, the AP divides the Beacon Interval into a plurality of time intervals. FIG. 13 is a schematic diagram of the contention time interval division and pattern of the contention access according to Embodiment 6 of the present invention. In FIG. 13, U1" means that only the uplink highest access level data is allowed to be contending for transmission; "U2" means that only the uplink highest and the second access level data are allowed to be contending for transmission; "D" means that only downlink data is allowed to be sent for transmission; "U/D1" means only Allows the uplink and downlink highest access level data to be contending for transmission; "U/D2" indicates that the uplink and downlink highest and second access level data are allowed to be contending for transmission; "U/D3" indicates that the uplink and downlink are allowed to be the highest, second and third. The access level data is contending for transmission; "U/D4" indicates that all access level data of the uplink and downlink are allowed to be contending for transmission. As shown in FIG. 13 , each time interval is specified as a contention direction of the contention access, such as “uplink contention access transmission”, “downlink contention access transmission”, and “upstream and downlink contention access transmission”. The STA is in the contention time interval of the uplink access competition transmission or the uplink and downlink contention access transmission, according to the user category and/or the service category, or within the contention time interval corresponding to the specified access level. , for competitive transmission. Each time interval is specified as a contention access transmission The directional attribute is used to determine the initiator of the contention access. The "uplink" means that the non-AP site is competing for access, and the "downstream" means that the AP site is competing for access. After the contention access successfully obtains the transmission opportunity, the uplink and downlink radio frame transmission is allowed.

Example 7:

In the same manner as Embodiments 1 to 6, the above-mentioned contention access time intervals may partially overlap on the time domain and/or the frequency domain. The AP may also define a period of time and divide a number of contention access time intervals within the defined time period.

Example 8:

With the first to seventh embodiments, the AP can adjust the above-mentioned competition access time interval configuration parameters according to the load conditions of each priority service or site. For example, a site or service with a large traffic rate is set to a high access level. In the process of establishing a service, it may be directly designated as a high access level or allocated more contention time intervals. Alternatively, the AP may define an access level or allocate a contention time interval according to a comprehensive metric such as a user category, a service class, and a load.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

As described above, the method and apparatus for transmitting a wireless frame provided by the embodiment of the present invention have the following beneficial effects: the problem that the control capability of the site existing in the related art is low is solved, and the effect of improving the control capability of the site is achieved.

Claims

A method for transmitting a wireless frame, comprising:

The first station divides one or more predetermined intervals or one or more predetermined time periods within the predetermined interval into a predetermined number of contention access time intervals, wherein the contention access time interval is used for the first The station contends to send the first radio frame and/or for one or more second stations to contend to send the second radio frame;

The first station divides an access level for the contention access time interval;

The first station notifies the second station of the indication message, where the indication message includes the access level information of the contention access time interval, where the access level information is used to assist the The second station selects a contention access time interval used when the second radio frame is contending for transmission.
The method according to claim 1, wherein the access level information is used to assist the second station to select to contend for the contention time interval used by the second radio frame to include:

The access level information is used to assist the second station to select a contention access time interval corresponding to an access level of the second radio frame, where the access level of the second radio frame is At least one of the user class, the service class, and the quality of service QoS parameter of the second site is determined.
The method of claim 1, wherein the first station notifying the indication message to the second site comprises at least one of:

And notifying, by the first station, the access level information of the contention combination time interval combination pattern and/or the contention access time interval combination pattern to the second station, where the contention combination time interval combination pattern is configured by a predetermined location and number of competing access time intervals;

The first station notifies the second station of the access level information of the contention access time interval and/or the contention access time interval.
The method of claim 1, wherein the notifying the indication message to the second site by the first station comprises:

The first station notifies the indication message to the second station by means of a broadcast.
The method of claim 1, wherein the access level information comprises at least one of:

a user corresponding to the service access category, the contention access time combination combination pattern, and/or the access level of the contention access time interval corresponding to the access level of the contention combination time interval combination pattern and/or the contention access time interval a comprehensive metric of a service category and a user category corresponding to an access level of the category, the contention access time interval combination pattern, and/or the access level of the contention access time interval, a contention combination time pattern of the contention access, and/or the contention time of the contention A comprehensive metric of a service class, a user class, and a QoS parameter corresponding to the interval access level, where the contention combination time interval combination pattern is composed of a predetermined location and a number of contention access time intervals.
The method according to claim 1, wherein the indication message further comprises at least one of the following:

The time length information of the contention access time interval, the number of times of the contention access time interval, the number of time slot allocation information in the contention access time interval, and the contention access transmission of the contention access time interval The mode information, the parameters of the contention access time interval, and the validity period information.
The method according to claim 1, wherein after the first station notifies the indication message to the second site, the method further includes:

The first station receives the second radio frame that the second station contends to transmit on a contention access time interval in which an access level is less than or equal to an access level of the second radio frame.
The method according to claim 1, wherein the contention access transmission mode in the contention access time interval is configured by the first station, and the contention access transmission mode comprises at least one of the following:

Uplink contention access transmission, downlink contention access transmission, uplink and downlink contention access transmission.
The method of claim 8, wherein the first station divides one or more of the predetermined intervals or one or more of the predetermined time periods within the predetermined interval into a predetermined number of contention access times After the interval, it also includes:

The first station divides the contention access time interval of the contention access transmission mode into uplink contention access transmission into two or more time slots, wherein the two or more time slots are used for the second station Selecting a time slot randomly among the two or more time slots and contending to transmit the second radio frame after starting the randomly selected time slot, or the two or more time slots are used for the second station Competing to transmit the second radio frame after the start of the time slot notified by the first station, or the two or more time slots for the second station to contend for transmitting the second radio after starting a predetermined time slot Frame; or,

In a case where the contention access transmission mode of the contention access time interval is the uplink and downlink contention access transmission, the first station divides the contention time interval into two or more time slots, where Dedicating more than two time slots for the first station and/or the second station to randomly select time slots from the two or more time slots and to contend for transmission after starting the randomly selected time slot a radio frame and/or the second radio frame, or the two or more time slots for the first station and/or the second station to compete after the start of the time slot notified by the first station Transmitting a first radio frame and/or the second radio frame, or the two or more time slots for the first station and/or the second station to contend to transmit the first after a predetermined time slot begins a wireless frame and/or the second wireless frame, wherein the first wireless frame is transmitted by the first station.
The method according to claim 8, wherein when the contention access transmission mode in the contention access time interval is a downlink contention access transmission and/or an uplink and downlink contention access transmission, the method further includes:

Determining, by the first station, a contention access time interval used by the first station to compete for sending the first radio frame;

The first station contends to send the first radio frame by using an enhanced distributed coordinated access function EDCA within the selected contention access time interval.
The method of claim 8 further comprising:

When the contention access transmission mode in the contention access time interval is the uplink contention access transmission or the uplink and downlink contention access transmission, the second station uses the enhanced distributed coordinated access function EDCA to perform the second wireless transmission. frame.
The method of claim 1, wherein after the first station divides the access level for the contention access time interval, the method further includes:

Receiving, by the first station, a request radio frame sent by the second station, where the request radio frame carries at least one of a user category, a service category, and a service quality of service QoS parameter of the second station, The requesting radio frame is configured to request the first station to indicate, for the second station, a contention access time interval used by the second station to select the contention for transmitting the second radio frame;

Determining, by the first station, one or more contention time interval combination patterns and/or one or more contention access time intervals for the second station according to the request radio frame of the second station;

Sending, by the first station, a response frame to the second station, where the response frame carries the indicated one or more contention access time interval combination patterns and/or the contention access time interval combination Access level information of the pattern, and/or access level information of the one or more contention access time intervals and/or the contention access time interval.
The method of claim 12, wherein the response frame further comprises at least one of the following information:

The time length information of the contention access time interval, the number of times of the contention access time interval, the number of time slot allocation information in the contention access time interval, and the contention access transmission of the contention access time interval The mode information, the parameters of the contention access time interval, and the validity period information.
The method of claim 1, wherein after the first station divides the access level for the contention access time interval, the method further includes:

The first station updates the indication message;

The first station sends the updated indication message to the second site.
A method for transmitting a wireless frame, comprising:

Receiving, by the second station, an indication message of the first station notification, where the indication message includes a reservation that the first station divides one or more predetermined intervals or one or more predetermined time periods within the predetermined interval into The access level information of the number of contention access time intervals;

Determining, by the second station, a contention access time interval used by the second radio frame according to the indication message;

The second station contends to send the second radio frame on the selected contention access time interval.
The method according to claim 15, wherein the second station selects a contention access time interval used by the second radio frame according to the indication message to:

And the second station selects, according to the access level information, a contention access time interval corresponding to an access level of the second radio frame, where an access level of the second radio frame is by the second At least one of the user category, service class, and quality of service QoS parameters of the site is determined.
The method according to claim 16, wherein the second station selects a contention access time interval corresponding to the access level of the second radio frame according to the access level information, including:

And the second station selects, according to the access level information, a contention access time interval in which the access level is less than or equal to the access level of the second radio frame.
The method according to claim 15, wherein the access level information of the contention access time interval comprises at least one of the following:

a contention access time combination combination pattern composed of a predetermined location and a number of contention access time intervals and/or access level information of the contention access time interval combination pattern;

Access level information of the contention time interval and/or the contention access time interval.
The method of claim 15, wherein the receiving, by the second station, the indication message of the first station notification comprises:

The second station receives the indication message notified by the first station by receiving a broadcast message.
The method of claim 15, wherein the access level information comprises at least one of:

a user corresponding to the service access category, the contention access time combination combination pattern, and/or the access level of the contention access time interval corresponding to the access level of the contention combination time interval combination pattern and/or the contention access time interval a comprehensive metric of a service category and a user category corresponding to an access level of the category, the contention access time interval combination pattern, and/or the access level of the contention access time interval, a contention combination time pattern of the contention access, and/or the contention time of the contention A comprehensive metric of a service class, a user class, and a QoS parameter corresponding to the interval access level, where the contention combination time interval combination pattern is composed of a predetermined location and a number of contention access time intervals.
The method according to claim 15, wherein the indication message further comprises at least one of the following:

The time length information of the contention access time interval, the number of times of the contention access time interval, the number of time slot allocation information in the contention access time interval, and the contention access transmission of the contention access time interval The mode information, the parameters of the contention access time interval, and the validity period information.
The method according to claim 15, wherein the contention access transmission mode in the contention access time interval is configured by the first station, and the contention access transmission mode includes at least one of the following:

Uplink contention access transmission, downlink contention access transmission, uplink and downlink contention access transmission.
The method of claim 22, wherein the second station contending to transmit the second radio frame on the selected contention access time interval comprises:

Determining, by the second station, that the first station divides the contention access transmission mode into two or more time slots of the contention access time interval of the uplink contention access transmission and/or the uplink and downlink contention access transmission;

The second station randomly selects a time slot from the two or more time slots and contends to transmit the second wireless frame after the randomly selected time slot starts, or the two or more time slots are used for The second station contends to transmit the second radio frame after the start of the time slot notified by the first station, or the two or more time slots are used for the second station to compete after a predetermined time slot begins Sending the second radio frame.
The method of claim 22, wherein the second station contending to transmit the second radio frame on the selected contention access time interval comprises:

The second station contends to send the second radio frame by using an enhanced distributed coordinated access function EDCA in a contention access time interval in which the contention access transmission mode is the uplink contention access transmission and/or the uplink and downlink contention access transmission. .
The method of claim 15 further comprising:

Sending, by the second station, the requesting radio frame for requesting the first station to indicate, by the first station, a contention access time interval for contending to send the second radio frame, where The radio frame request message carries at least one of the following: a user category of the second site, a service class of the second site, and a service quality of service QoS parameter of the second site;

Receiving, by the second station, a response frame sent by the first station, where the response frame carries the first station according to a user category, a service category, and a service quality QoS parameter of the second site. At least one of the subscription access time interval combination pattern selected by the second station and/or the access level information of the contention access time interval combination pattern, and/or the contention access time interval and/or the contention Access level information of the access time interval.
The method of claim 25, wherein the response frame further comprises at least one of the following information:

The time length information of the contention access time interval, the number of times of the contention access time interval, the number of time slot allocation information in the contention access time interval, and the contention access transmission of the contention access time interval The mode information, the parameters of the contention access time interval, and the validity period information.
The method of claim 15 further comprising:

The second station receives the updated indication message sent by the first station.
A radio frame transmitting apparatus is applied to a first station, including:

a first dividing module, configured to divide one or more predetermined intervals or one or more predetermined time periods within the predetermined interval into a predetermined number of contention access time intervals, wherein the contention access time interval is used for The first station contends to send a first radio frame and/or for one or more second stations to contend to send a second radio frame;

a second dividing module, configured to divide an access level for the contention access time interval;

a notification module, configured to notify the second station of the indication message, where the indication message includes the included access level information of the contention access time interval, where the access level information is used to assist the The second station chooses to contend for the contention access time interval used by the second radio frame.
The apparatus according to claim 28, wherein the access level information is used to assist the second station to select to contend for the contention time interval used by the second radio frame to include:

The access level information is used to assist the second station to select a contention access time interval corresponding to an access level of the second radio frame, where the access level of the second radio frame is At least one of the user class, the service class, and the quality of service QoS parameter of the second site is determined.
The apparatus of claim 29, further comprising:

The first receiving module is configured to receive, by the second station, the second radio frame that is contending to be sent on a contention access time interval in which an access level is less than or equal to an access level of the second radio frame.
A radio frame transmitting apparatus is applied to a second station, including:

a second receiving module, configured to receive an indication message of the first station notification, where the indication message includes one or more predetermined intervals or one or more predetermined time periods within the predetermined interval Access level information divided into a predetermined number of contention access time intervals;

a selection module, configured to select, according to the indication message, a contention access time interval used for contending to send the second radio frame;

And a sending module, configured to contend to send the second radio frame on the selected contention access time interval.
The apparatus of claim 31 wherein said selection module comprises:

a selection unit, configured to select, according to the access level information, a contention access time interval corresponding to an access level of the second radio frame, where an access level of the second radio frame is by the second At least one of the user category, service class, and quality of service QoS parameters of the site is determined.
The apparatus of claim 32, wherein the selection unit comprises:

And selecting, according to the access level information, a contention access time interval in which the access level is less than or equal to an access level of the second radio frame.