KR20130136407A - Method for transmitting data using short media access control header and apparatus for transmitting data using short media access control header - Google Patents

Abstract

Disclosed is a method and apparatus for transmitting data using short media access control header capable of preventing unnecessary radio channel occupation and of reducing power consumption of a terminal. The present invention includes: a step for grouping a plurality of terminals according to a predetermined standard; a step for assigning a group connection ID (AID) to each group; a step for forming a media access control header (MAC header) including an AID; and a step for transmitting a data frame including a MAC header to a certain group. Thus, by using an AID in a first address field of a short MAC header, a terminal's power consumption can be reduced, and an unnecessary radio channel occupation can be prevented. [Reference numerals] (AA) START;(BB) END;(S310) Grouping a plurality of terminals according to predetermined standard;(S320) Allocating connection ID to each group grouped;(S330) Forming MAC header including group connection ID;(S340) Transmitting data frame including MAC header

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a data transmission method using a short MAC header and a data transmission apparatus using a short MAC header,

The present invention relates to a wireless communication technology, and more particularly, to a data transmission method using a short MAC header and a data transmission device using a short MAC header that can improve data transmission efficiency.

With the development of information and communication technology, various wireless communication technologies are being developed. Among these, a wireless local area network (WLAN) is a wireless local area network (WLAN) based on radio frequency technology such as a personal digital assistant (PDA), a laptop computer, a portable multimedia player It is a technology that allows a portable terminal to access the Internet wirelessly in a home, a business, or a specific service providing area.

Standards for WLAN technology are developed and standardized by the IEEE 802.11 WG (Working Group) under the Institute of Electrical and Electronics Engineers (IEEE) 802.11 committee. IEEE 802.11a uses a unlicensed band at 5 GHz and provides a maximum PHY data rate of 54 Mbps. IEEE 802.11b applies a direct sequence spread spectrum (DSSS) at 2.4 GHz to provide a maximum PHY data rate of 11 Mbps. IEEE 802.11g applies orthogonal frequency division multiplexing (OFDM) at 2.4 GHz to provide a maximum PHY data rate of 54 Mbps. IEEE 802.11n provides a maximum PHY data rate of 300 Mbps using two spatial streams and 40 MHz bandwidth, and has 4 spatial streams and 40 MHz And provides a maximum PHY data rate of 600 Mbps when bandwidth is used.

As the spread of the WLAN is activated and the applications using the WLAN are activated, a need for a new WLAN technology to support a higher throughput than the data processing speed supported by IEEE 802.11n is increasing. Very high throughput (VHT) Wireless LAN technology is one of the 802.11 wireless LAN technologies and has been proposed to support data rates of more than 1 Gbps. Among them, IEEE 802.11ac is being developed as a standard for providing ultra high throughput in the 5 GHz band, and IEEE 802.11ad is being developed as a standard for providing ultra high throughput in the 60 GHz band.

On the other hand, a typical example of frequently transmitting very small-sized data is a sensor device. When the sensor device periodically transmits the measured sensor data, it transmits data of substantially 256 bytes at a time, , It actually transfers 64 bytes of data.

However, since the size of a MAC header format for transmitting a data frame by a WLAN terminal is about 30 to 36 octets based on 802.11n, when a wireless LAN is attached to the sensor device, The WLAN MAC header of the WLAN is relatively large compared to the size of the data and there is a problem that unnecessary data transmission overhead is generated.

Particularly, in the case of a sensor device that operates with a battery, important current is wasted due to repetitive transmission of unnecessary information in a MAC header. In an environment where thousands of sensors operate simultaneously, unnecessary information occupies a wireless channel, .

It is an object of the present invention to provide a data transmission method using a short MAC header that can improve data transmission efficiency.

It is another object of the present invention to provide a data transmission method using a short MAC header that can improve data transmission efficiency.

According to another aspect of the present invention, there is provided a data transmission method using a short MAC header, the method comprising the steps of: grouping a plurality of terminals according to preset criteria; Assigning a group connection ID to each group according to the grouping; configuring a MAC header including the group connection ID; and transmitting a data frame including the MAC header to a specific group.

The step of grouping a plurality of terminals according to a preset reference may group the plurality of terminals according to a service type or terminal characteristics.

Here, the group connection ID may include at least one of a page ID, a block index, a sub-block index, and a station bit index.

The MAC header may include a frame control field, a first address field, a second address field, and a sequence control field.

Here, the first address field may include the group connection ID.

According to another aspect of the present invention, there is provided a method of transmitting data using a short MAC header, the method comprising: receiving a MAC header of a data frame from an access point; Determining whether the MAC header includes group connection ID information of a group to which the MAC header belongs, and determining whether to receive a data frame based on the determination result.

The step of determining whether the MAC header includes the group connection ID information of the group to which the MAC header belongs includes determining whether a group connection ID is included in the MAC header, Acquiring a connection ID, and determining whether the acquired group connection ID matches a previously stored group connection ID.

Here, the group connection ID may include at least one of a page ID, a block index, a sub-block index, and a station bit index.

The MAC header may include a frame control field, a first address field, a second address field, and a sequence control field.

Here, the first address field may include the group connection ID.

The step of determining whether to receive a data frame based on the determination result may receive the data frame when the group header of the group to which the data frame belongs belongs in the MAC header of the data frame.

If the MAC header of the data frame does not include the group connection ID information of the group to which the data frame belongs, the step of determining whether to receive the data frame based on the determination result includes discarding the MAC header, Reception can be stopped.

According to another aspect of the present invention, there is provided an access point for performing data transmission using a short MAC header, the method comprising: grouping a communication unit and a plurality of terminals according to a preset reference; And a processing unit for allocating a group connection ID to each group according to the grouping, forming a MAC header including the group connection ID, and transmitting the data frame including the MAC header to the specific group through the communication unit.

Here, the group connection ID may include at least one of a page ID, a block index, a sub-block index, and a station bit index.

The MAC header may include a frame control field, a first address field, a second address field, and a sequence control field.

According to another aspect of the present invention, there is provided a terminal for performing a method of transmitting data using a short MAC header according to an embodiment of the present invention includes a communication unit, a storage unit for storing a group connection ID, And a processing unit for receiving a MAC header of a data frame from the access point, and determining whether to receive a data frame based on whether a group connection ID of the group to which the MAC header belongs is included in the MAC header.

Here, the processing unit may obtain the group connection ID when the MAC header includes the group connection ID, and may determine whether the group connection ID is identical to the group connection ID previously stored in the storage unit.

Here, the group connection ID may include at least one of a page ID, a block index, a sub-block index, and a station bit index.

The MAC header may include a frame control field, a first address field, a second address field, and a sequence control field.

According to the method and apparatus for transmitting data using the short MAC header according to an embodiment of the present invention, a short MAC header with no unnecessary fields is used in a MAC header structure for transmitting data, Assigns an ID, and transmits a data frame to the terminal.

Accordingly, it is possible to reduce the consumption current of the terminal and to prevent occupation of an unnecessary radio channel. In addition, the access point can effectively transmit multicast data to a specific group of terminals having common characteristics.

1 is a conceptual diagram showing an embodiment of a configuration of an IEEE 802.11 wireless LAN system.
2 is a conceptual diagram illustrating an 802.11 MAC frame format for data frame transmission.
3 is a flowchart illustrating a data transmission method using a short MAC header performed by an access point according to an embodiment of the present invention.
4 is a conceptual diagram illustrating a connection ID structure grouped according to an embodiment of the present invention.
5 is a conceptual diagram illustrating a connection ID structure in which a page ID is 1 in accordance with an embodiment of the present invention.
6 is a conceptual diagram illustrating a connection ID structure in which a page ID is 1 and a block index is 2 in accordance with an embodiment of the present invention.
7 is a conceptual diagram illustrating a connection ID structure in which a page ID is 1 and a block index is 2 times a sub-block index number 3 according to an embodiment of the present invention.
8 is a conceptual diagram illustrating a MAC header format used when a data frame is transmitted from an access point to a mobile station according to an embodiment of the present invention.
9 is a conceptual diagram illustrating a MAC header format used when a data frame is transmitted from an MS to an access point according to an embodiment of the present invention.
10 is a flowchart illustrating a data transmission method using a short MAC header performed in a mobile station according to an embodiment of the present invention.
11 is a conceptual diagram showing a configuration of an access point according to an embodiment of the present invention.
12 is a conceptual diagram illustrating a configuration of a terminal according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate the understanding of the present invention, the same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

Throughout the specification, a station is a physical layer for medium access control (MAC) and a medium access control (MAC) compliant with the IEEE 802.11 standard. Means any functional medium including an interface. A station (STA) can be divided into a station (STA) which is an access point (AP) and a station (STA) which is a non-AP. A station (STA), which is an access point (AP), may be referred to simply as an access point (AP), and a station (STA) that is a non-AP may be simply referred to as a terminal.

The terminal includes a processor and a transceiver, and may further include a user interface and a display device. A processor is a unit designed to generate a frame to be transmitted over a wireless network or to process a frame received through a wireless network, and performs various functions for controlling the station (STA). A transceiver is a unit that is functionally connected to a processor and is designed to transmit and receive frames over a wireless network for a station (STA).

An access point (AP) may refer to a centralized controller, a base station (BS), a node-B, an eNode-B, a base transceiver system (BTS), a site controller, May include some or all of the functions of the < / RTI >

A terminal includes a user equipment (UE), a mobile station (MS), a user terminal (UT), a wireless terminal, an access terminal (AT), a terminal, a subscriber unit, May be referred to as a Subscriber Station (SS), a wireless device, a wireless communication device, a Wireless Transmit / Receive Unit (WTRU), a mobile node, Various embodiments of the terminal may be used in various applications such as cellular telephones, smart phones with wireless communication capabilities, personal digital assistants (PDAs) with wireless communication capabilities, wireless modems, portable computers with wireless communication capabilities, Devices, gaming devices with wireless communication capabilities, music storage and playback appliances with wireless communication capabilities, Internet appliances capable of wireless Internet access and browsing, as well as portable units or terminals incorporating combinations of such features But is not limited thereto.

1 is a conceptual diagram illustrating an embodiment of a configuration of an IEEE 802.11 WLAN system.

Referring to FIG. 1, an IEEE 802.11 WLAN system includes at least one basic service set (BSS). A BSS is a set of stations (STA 1, STA 2 (AP 1), STA 3, STA 4, STA 5 (AP 2)) that are able to successfully communicate and communicate with each other, no.

BSS can be classified into Infrastructure BSS (Independent BSS) and Independent BSS (IBSS), and BSS 1 and BSS 2 represent Infrastructure BSS. The BSS 1 connects the access point STA 2 (AP 1) and the access points STA 2 (AP 1) and STA 5 (AP 2), which provide a terminal STA 1, a distribution service And a distribution system (DS). In BSS 1, the access point (STA 2 (AP 1)) manages the terminal (STA 1).

BSS 2 connects a terminal (STA 3, STA 4), an access point (STA 5 (AP 2)) providing a distribution service and a plurality of access points (STA 2 (AP 1), STA 5 (AP 2)) It may include a distribution system. In BSS 2, the access point (STA 5 (AP 2)) manages the terminals STA 3 and STA 4.

The independent BSS, on the other hand, is a BSS operating in an ad-hoc mode. Since the IBSS does not include an access point, there is no centralized management entity in the center. That is, in the IBSS, terminals are managed in a distributed manner. In the IBSS, all terminals can be made as mobile terminals, and a connection system is not allowed to the distribution system (DS), thereby forming a self-contained network.

The access points STA 2 (AP 1) and STA 5 (AP 2) provide access to the distributed system DS through the wireless medium for the terminals STA 1, STA 3, and STA 4 coupled thereto. . Communication between terminals STA 1, STA 3, and STA 4 in BSS 1 or BSS 2 is generally performed through an access point STA 2 (AP 1) or STA 5 (AP 2), but a direct link (direct link) If the link is configured, direct communication between the terminals STA 1, STA 3, and STA 4 is possible.

A plurality of infrastructure BSSs may be interconnected via a distribution system (DS). A plurality of BSSs connected through a distribution system (DS) is called an extended service set (ESS). Stations included in the ESS may communicate with each other, and the UE may move from one BSS to another BSS while seamlessly communicating within the same ESS.

The distribution system (DS) is a mechanism for one access point to communicate with another access point, whereby the access point transmits frames to, or moves to, another BSS for the terminals that are associated with the BSS it manages. A frame may be transmitted for one arbitrary terminal. The access point can also transmit and receive frames to and from an external network, such as a wired network. Such a distribution system (DS) does not necessarily need to be a network, and there is no limitation on its form as long as it can provide a predetermined distribution service defined in the IEEE 802.11 standard. For example, the distribution system may be a wireless network such as a mesh network or a physical structure that connects access points to each other.

A method and apparatus for transmitting data using a short MAC header according to an embodiment of the present invention can be applied to the IEEE 802.11 wireless LAN system described above. In addition to the IEEE 802.11 wireless LAN system, a wireless personal area network (WPAN) A Wireless Body Area Network (WBAN), and the like.

2 is a conceptual diagram illustrating an 802.11 MAC frame format for data frame transmission.

Referring to FIG. 2, the MAC frame format is about 30 to 36 octets based on 802.11n.

The sensor device, that is, the sensor terminal transmits data of very small size frequently. When a wireless LAN is installed in the sensor terminal, the MAC header included in the MAC frame format is relatively large in comparison with the data size Thereby causing unnecessary data transmission overhead.

In particular, in the case of a sensor terminal operating as a battery, unnecessary information in the Mac header is repeatedly transmitted, which causes a significant current to be wasted. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. .

3 is a flowchart illustrating a data transmission method using a short MAC header performed by an access point according to an embodiment of the present invention.

Referring to FIG. 3, the access point 100 groups a plurality of terminals according to a preset reference (S310).

Here, the predetermined criteria may include the service type of the terminal, the type of the terminal, and the like. The access point 100 may group the plurality of terminals into the same group when the types of services or the characteristics of the terminals are the same.

The access point 100 assigns an association ID (AID) to each of the grouped groups after the grouping in step 310 (S320).

Here, the group connection ID may include a page ID, a block index, a sub-block index, and a station bit index.

The access point 100 constructs a MAC header including a group connection ID (S330).

Here, the MAC header may include a frame control field, a first address field, a second address field, and a sequence control field. In addition, the first address field may include an assigned group connection ID.

Then, the access point transmits a data frame including the MAC header to neighboring terminals (S340).

In the data transmission method using the short MAC header according to the embodiment of the present invention, an unnecessary duration field of 2 bytes (Bytes), a third address (Address 3) field of 6 bytes, It is possible to reduce the consumption current of the terminal by using a short MAC header that removes a total of 20 bytes of information including 6 bytes of the fourth address (Address 4) field and 6 bytes of the QoS control and the HT control and prevents unnecessary wireless channel occupation .

4 is a conceptual diagram illustrating a connection ID structure grouped according to an embodiment of the present invention.

Referring to FIG. 4, the access point 100 allocates a connection ID as a hierarchical structure in order to group and manage a plurality of terminals according to service types or terminal characteristics.

Specifically, the access point 100 assigns a connection ID to a hierarchical structure in the form of a page ID, a block index, a sub-block index, and a station bit index .

Hereinafter, various embodiments for hierarchically allocating connection IDs through FIGS. 5 to 7 will be described.

FIG. 5 is a conceptual diagram illustrating a connection ID structure in which a page ID is 1 in accordance with an embodiment of the present invention. FIG. 6 illustrates a connection ID structure in which a page ID is 1 and a block index is 2 in accordance with an embodiment of the present invention. FIG. 7 is a conceptual diagram illustrating a connection ID structure in which a page ID is 1 and a block index is 2 times a 3 sub-block index according to an embodiment of the present invention.

Referring to FIG. 5 to FIG. 7, an ID (ID) representing a group of each layer is assigned to designate all bit values of a lower level as 0.

Specifically, FIG. 5 shows a connection ID representing all terminals belonging to the group # 1. FIG. 6 shows a canonical connection ID of a page ID 1 and a block index 2, and FIG. 7 shows a representative connection ID of a page ID 1 and a block index 2 sub-block index 3.

Although the connection ID structure as shown in FIGS. 5 to 7 has been described in the embodiment of the present invention, other connection ID structures may be provided within the scope of the present invention in other embodiments of the present invention.

8 is a conceptual diagram illustrating a MAC header format used when a data frame is transmitted from an access point to a mobile station according to an embodiment of the present invention.

Referring to FIG. 8, a MAC header used for transmitting a data frame from the access point 100 to a terminal includes a frame control field, a first address field, a second address field, and a sequence control field .

Here, the access point 100 may use a layer-by-layer group connection ID in the first address field to multicast data simultaneously to terminals belonging to a specific group.

In one embodiment of the present invention, data transmission in the sensor network is represented by a single packet transmission type in the same Basic Service Set (BSS), so that unnecessary fields are removed from the MAC header structure of FIG. 1 You can use a short Mac header format such as 8.

Specifically, when transmitting a single packet in the sensor network, a duration field of 2 bytes for setting a Network Allocation Vector Timer (NAV Timer) is unnecessary. When transmitting / receiving data in the same basic service set, The fourth address field is unnecessary. In addition, in the case of a low-cost simple-structure terminal such as a sensor device, a short MAC header format as shown in FIG. 8 can be used since HT control or QoS advanced technology can be avoided.

9 is a conceptual diagram illustrating a MAC header format used when a data frame is transmitted from an MS to an access point according to an embodiment of the present invention.

9, a MAC header used when a data frame is transmitted from a terminal to an access point or another terminal is composed of a frame control field, a first address field, a second address field, and a sequence control field .

As described above, the UE can use a short MAC header format in which a duration field, a third address field, a fourth address field, HT control, and QoS are removed in a single packet transmission.

In particular, the first address field of the MAC header format may include a Basic Service Set ID (BSSID) and / or a Receiver Address (RA).

Here, the basic service set ID (BSSID) usually indicates the MAC address of the access point, and the receiver address RA indicates the MAC address of the receiving terminal necessary for transmitting the data directly to the general terminal, Indicates the MAC address.

10 is a flowchart illustrating a data transmission method using a short MAC header performed in a mobile station according to an embodiment of the present invention.

Referring to FIG. 10, the terminal 200 receives a MAC header of a data frame from the access point 100 (S1010).

Here, the MAC header may include a frame control field, a first address field, a second address field, and a sequence control field. Also, the first address field may include a group connection ID.

The terminal 200 determines whether a group connection ID (AID) is included in the MAC header received in operation 1010 (S1020).

Here, the group connection ID may include a page ID, a block index, a sub-block index, a station bit index, and the like.

If the group header information (AID) information is included in the MAC header received in step 1020, the terminal 200 acquires the group connection ID included in the received header information (operation S1030).

Then, the terminal 200 determines whether the acquired group connection ID matches the previously stored group connection ID (S1040).

If it is determined that the group connection ID acquired in step 1040 and the previously stored group connection ID match, the terminal 200 receives the data frame (S1050).

Alternatively, if it is determined that the group connection ID acquired in step 1040 does not match the previously stored group connection ID, the terminal 200 discards the received MAC header and stops receiving the data frame in step 1060.

According to an embodiment of the present invention, since a short MAC header is used in which the unnecessary fields are removed from the MAC header structure for the existing data transmission, the consumption current of the terminal can be reduced and occupation of unnecessary radio channels can be prevented.

Components described below may be defined by functions performed by each of the components defined by the functional division, not the physical division. Each component may be implemented as hardware and / or program code and a processing unit performing the respective functions, and functions of two or more components may be embodied in one component.

Therefore, the names given to the components in the following embodiments are given not to physically distinguish each component, but to imply representative functions performed by each component, and are referred to by the name of the component. It should be noted that the technical spirit of the invention is not limited.

11 is a conceptual diagram showing a configuration of an access point according to an embodiment of the present invention.

Referring to FIG. 11, an access point 100 according to an embodiment of the present invention may include a communication unit 110 and a processing unit 120.

The communication unit 110 may perform communication with a plurality of terminals based on the control of the processing unit 120. [

The processing unit 120 groups a plurality of terminals according to a preset reference, assigns a group connection ID to each group according to the grouping, and transmits a MAC header including the group connection ID And transmits the data frame including the MAC header to the specific group through the communication unit.

Here, the group connection ID may include at least one of a page ID, a block index, a sub-block index, and a station bit index. The MAC header may comprise a Frame Control field, a first address field, a second address field, and a sequence control field. In particular, the first address field may include a group connection ID.

12 is a conceptual diagram illustrating a configuration of a terminal according to an embodiment of the present invention.

Referring to FIG. 12, a terminal 200 according to an embodiment of the present invention may include a communication unit 210, a processing unit 220, and a storage unit 230.

The communication unit 210 may receive data from the access point 100 or another terminal and may transmit data to the access point 100 or another terminal based on the control of the processing unit 220. [

The processing unit 220 receives the MAC header of the data frame from the access point 100 through the communication unit 210. [

Here, the MAC header may include a frame control field, a first address field, a second address field, and a sequence control field. Also, the first address field may include a group connection ID.

In addition, the processing unit 220 acquires the group connection ID included in the received MAC header when the association ID (AID) information is included in the received MAC header.

Here, the group connection ID may include a page ID, a block index, a sub-block index, a station bit index, and the like.

In addition, the processing unit 220 determines whether the group connection ID stored in the storage unit 230 matches the group connection ID obtained.

If it is determined that the group connection ID stored in advance in the storage unit 230 matches the group connection ID, the processing unit 220 receives the data frame.

Alternatively, the processing unit 220 discards the received MAC header and stops receiving the data frame if it is determined that the group connection ID stored in advance does not match the acquired group connection ID.

The storage unit 230 may be configured as a large-capacity non-volatile storage device (for example, a hard disk drive), and a group connection ID may be stored.

According to an embodiment of the present invention, since a short MAC header is used in which the unnecessary fields are removed from the MAC header structure for the existing data transmission, the consumption current of the terminal can be reduced and occupation of unnecessary radio channels can be prevented.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

100: access point 110, 210:
120, 220: processing unit 230: storage unit

Claims (19)

A data transmission method performed by an access point,
Grouping a plurality of terminals according to a preset reference;
Assigning a group association ID to each group according to the grouping;
Configuring a MAC header including the group connection ID; And
And transmitting the data frame including the MAC header in a specific group. The method according to claim 1,
Grouping a plurality of terminals according to a preset reference,
And grouping the plurality of terminals according to a service type or terminal characteristics. The method according to claim 1,
The group connection ID includes:
Wherein the data structure includes at least one of a page ID, a block index, a sub-block index, and a STA bit index. . The method according to claim 1,
The MAC header includes:
Wherein the first field comprises a frame control field, a first address field, a second address field, and a sequence control field. The method of claim 4,
Wherein the first address field includes the group connection ID. A method for transmitting data in a terminal,
Receiving a MAC header of a data frame from an access point;
Determining whether a group header of the group to which the MAC header belongs is included in the MAC header; And
And determining whether to receive a data frame based on the determination result. The method of claim 6,
Wherein the step of determining whether the group header of the group to which the MAC header belongs includes the association ID information,
Determining whether a group connection ID is included in the MAC header;
Obtaining the group connection ID when the group connection ID is included; And
And determining whether the acquired group connection ID matches the group connection ID stored in advance. The method of claim 6,
The group connection ID includes:
Wherein the data structure includes at least one of a page ID, a block index, a sub-block index, and a STA bit index. . The method of claim 6,
The MAC header includes:
A first address field, a second address field, and a sequence control field. The method of claim 1, wherein the frame control field comprises a first field, a second address field, and a sequence control field. The method of claim 9,
Wherein the first address field includes the group connection ID. The method of claim 6,
Wherein the step of determining whether to receive a data frame based on the determination result comprises:
And if the MAC header of the data frame includes the group connection ID information of the group to which the MAC frame belongs, the data frame is received. The method of claim 6,
Wherein the step of determining whether to receive a data frame based on the determination result comprises:
And discarding the MAC header and discontinuing the data frame if the group connection ID information of the group to which the MAC frame belongs is not included in the MAC header of the data frame. . A communication unit; And
A plurality of terminals are grouped in accordance with a preset reference, an association ID is assigned to each group according to the grouping, a MAC header including the group connection ID is configured, And a processing unit for transmitting the data frame including the data frame to the specific group via the communication unit. The method according to claim 13,
The group connection ID includes:
Wherein the access point comprises at least one of a page ID, a block index, a sub-block index, and a station bit index. The method according to claim 13,
The MAC header includes:
A frame control field, a first address field, a second address field, and a sequence control field. A communication unit;
A storage unit for storing a group connection ID; And
A processing unit that receives a MAC header of a data frame from an access point through the communication unit and determines whether to receive a data frame based on whether a group connection ID of the group to which the MAC header belongs is included in the MAC header Included terminal. 18. The method of claim 16,
The processing unit,
Acquires the group connection ID if the group connection ID is included in the MAC header, and determines whether the group connection ID is identical to the group connection ID stored in the storage unit. 18. The method of claim 16,
The group connection ID includes:
Wherein the terminal comprises at least one of a page ID, a block index, a sub-block index, and a station bit index. 18. The method of claim 16,
The MAC header includes:
A frame control field, a first address field, a second address field, and a sequence control field.

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