KR20040058452A - Medium Access Control Device and Data transmission and reception method for real-time and high speed data processing - Google Patents

Abstract

PURPOSE: An MAC(Media Access Control) processing device for real-time high-speed data processing and a transmitting/receiving method thereof are provided to collectively generate timing for transmissions in a synchronous/timing controller, and to supply the generated timing, in order to minimize data transmission delay, thereby quickly processing data in real time. CONSTITUTION: A transmission processor(218) receives a transmission frame, and transmits the frame to a physical layer interface(217). A receiving processor(219) receives the frame to perform frame availability checking, frame filtering, and WEP reverse coding processes, and transmits the frame to a receiving queue of a host. A synchronous/timing controller(204) collectively generates timing to control, and decides a channel state. A transmission protocol controller(205) controls the transmission processor(218). A receiving protocol controller(208) controls the receiving processor(219). A control interface(203) temporarily stores various control parameters, commands, and monitoring data, and generates a control signal.

Description

Medium Access Control Device and Data transmission and reception method for real-time and high speed data processing

The present invention relates to a media access control apparatus for real-time high-speed data processing and a transmission / reception method thereof, and more particularly, in a wireless LAN system or the like to generate a timing required for transmission in a synchronous / timing controller. The present invention relates to a media access control processing apparatus and a transmission / reception method thereof for minimizing data transmission delay.

As a method for controlling access to a WLAN, there are largely a distributed coordination function (DCF) and a central coordination function (PCF).

First, the distributed control method uses a CSMA / CA (Carrier Sense Multiple Access with Collision Avoidance) method in order to minimize the waste of the channel while preventing the collision caused by multiple terminals access the same channel at the same time. The CSMA / CA detects the idle and busy states of the channel in the physical layer and informs the media access control layer the CCA (Clear Channel Assessment) method, and the terminal being transmitted to the duration field of the transmission frame. Network Allocation Vector (NAV) method for recording the channel usage request time to prevent transmission of other terminals in advance. Such a distributed control method is a method applied to a contention period because there is a competition between terminals.

However, even if the channel is in an idle state by using a clear channel assessment (CCA) method, other terminals may not perform transmission if the NAV indicates that the transmission request time of a specific terminal has not expired. There are disadvantages. In addition, even if the channel is in an idle state and the Network Allocation Vector (NAV) has expired, the media access control layer must perform a backoff process to prevent a collision that may occur due to transmission requests by multiple terminals at the same time.

The central control method is an effective method for processing traffic requiring more real-time processing, and the access rights of the shared channel are controlled by a PC (Point Coordinator) of the access point to allow each terminal to use the channel for a predetermined time. In this polling-based central control method, each terminal cannot actively transmit data to a point coordinator (PC), but can only send data by polling a point coordinator (PC). Therefore, this method can partially solve the inevitable part of data delay due to one terminal monopolizing the channel or excessive competition. This method is a method that is applied to the non-competition period because there is no competition between the terminals. However, this central control method has a disadvantage of causing a waste of channels by performing polling even for a terminal having no data to transmit. These two media access control methods occur in the competition section and the non-competition section, respectively, and the competition section and the non-competition section appear alternately.

Meanwhile, the media access control processing apparatus may include the following functions in common to the distributed control method and the central control method.

First, it performs frame dividing and frame assembly functions. Each terminal may adjust the size of the transmission frame in consideration of changes in the wireless environment. The transmission medium access control apparatus divides and transmits a frame to be transmitted in a predetermined size, and the reception medium access control apparatus receives the data and combines the frames again to restore the original data frame.

Second, it performs power management functions. The medium access control may be in a dormant state except when there is data to be transmitted by an upper layer power mode decision or when it is activated to receive a frame periodically transmitted from the access point. When the terminal in the dormant state has transmitted data, the medium access control must transmit the request of the upper layer to the physical layer in real time to activate the physical layer.

Third, it performs encryption and de-encryption functions. In media access control, encryption and reverse encryption are performed by using WEP (Wired Equivalent Privacy) to prevent eavesdropping of data.

Fourth, it supports various data rates. Although it depends on the type of physical layer, the IEEE 802.11a standard for the physical layer of the Orthogonal Frequency Division Multiplexing (OFDM) method should basically support transmission rates of 6, 9, 12, 18, 24, 36, 48, and 54 Mbps.

In order to properly perform the functions of the distributed control method and the central control method, the media access control layer first of all generates a transmission frame interval called an inter frame space (IFS) at an accurate time and generates an internal frame interval (IFS). Inter Frame Space) It is important to transmit data in real time according to timing. In medium access control, there are basically Inter Frame Space (IFS), slot timing, beacon timing, etc. such as Short Inter Frame Space (SIFS), PCF Inter Frame Space (PIFS), and DCF Inter Frame Space (DIFS). . In IEEE 802.11a, SIFS is 16us, PIFS is 25us, DIFS is 34us, and slot timing, which is the basic unit of backoff, is fixed at 9us, but beacon timing may vary according to the administrator's setting.

Data transmitted from a higher layer in a WLAN system is composed of a unit of MS Service (MAC Service Data Unit) or MMPDU (MAC Management Protocol Data Unit) and has a size of 0 to 2403 bytes. The data of the MAC Service Data Unit (MSDU) or the MAC Management Protocol Data Unit (MMPDU) may be divided and transmitted in units of the MAC Protocol Data Unit (MPDU) in the media access control apparatus.

In the distributed control method, once the UE acquires the channel permission, the MS occupies the channel until it completely transmits one MSDU (MAC Service Data Unit). In this case, the MSDU (MAC Service Data Unit) has several MPDUs. The MAC Protocol Data Unit (MPDU) should be transmitted at Short Inter Frame Space (SIFS) intervals. However, when transmission of one MSDU (MAC Service Data Unit) is completed, the terminal may wait as long as the DIFS (DCF Inter Frame Space) interval, perform a backoff according to the situation of each UE, and then may attempt transmission or immediately transmit.

Meanwhile, unlike the distributed control method, the terminal receiving a polling frame from a PC (Point Coordinator) in the central control method transmits one MPDU (MAC Protocol Data Unit) and then receives a polling frame from the PC (Point Coordinator) again. I have to wait. A point coordinator (PC) performs polling on the basis of MPDU (MAC Protocol Data Unit) to a terminal that wants to receive a service. At this time, all data frame exchanges are performed at Short Inter Frame Space (SIFS) intervals. If the data frame is not transmitted or received normally, the PC (Point Coordinator) waits for the PIFS (PCF Inter Frame Space) and performs the polling process again. At this time, the PC waits for PCF Inter Frame Space (PIFS) in order to prevent collisions from other centralized networks.

As such, the medium access control apparatus can generate data without delay only when the timing necessary for data transmission is accurately generated and the data is transmitted in accordance with the generated timing. If the timing does not occur at the correct time or the data from the upper layer is not processed at the proper timing, the data requiring real-time processing has a serious transmission delay and the data throughput is significantly reduced.

The present invention has been proposed to solve the above problems, and in a wireless LAN system, real-time high-speed data processing is minimized by minimizing data transmission delay by collectively generating and providing timing necessary for transmission in a synchronization / timing controller. It is an object of the present invention to provide a media access control processing apparatus and a transmission / reception method thereof.

1 is a block diagram of an embodiment of a system including a media access control apparatus according to the present invention;

2 is a block diagram of an embodiment of a media access control processing apparatus according to the present invention;

3 is a flowchart illustrating a transmission method in a media access control processing apparatus according to an embodiment of the present invention.

4 is a flowchart illustrating a receiving method in a media access control processing apparatus according to an embodiment of the present invention.

* Explanation of symbols on the main parts of the drawing

201: card bus interface 202: DMA controller

203: control interface 204: synchronous / timing controller

205: transmission protocol controller 206: transmission processor

207: reception processor 208: reception protocol controller

209: WEP Encoder 210: WEP Decoder

211: CRC Generator 212: CRC Checker

213: transmit FIFO 214: receive FIFO

215: Transmit FIFO Controller 216: Dual Port RAM

217: physical layer interface 218: transmission processing unit

219: reception processing unit 220: a media access control processing apparatus according to the present invention

The present invention for achieving the above object, in the media access control processing apparatus, receiving a transmission frame from the transmission queue of the external host, WEP encryption, time stamp insertion under the control of the synchronization / timing control means and transmission protocol control means Medium access control transmission processing means for transmitting to an external physical layer interface after performing CRC check insertion; Receiving a frame from the physical layer interface, performing a frame validation, frame filtering, WEP de-encryption, etc. under the control of the synchronization / timing control means and the reception protocol control means, and then accessing the medium to the reception queue of the host. Control receiving processing means; The synchronization / timing control means for collectively generating and controlling timing required for the medium access control transmission processing means and the medium access control receiving processing means, and for determining a channel state; The transmission protocol control means for controlling the transmission processing means according to a medium access control protocol and the control of the synchronization / timing control means; The reception protocol control means for controlling the medium access control reception processing means according to the control of the medium access control protocol and the synchronization / timing control means; Direct memory access (DMA) control means for real-time transmission / reception of data between the transmission / reception queue area of the host and the medium access control apparatus under the control of the synchronization / timing control means; And temporarily storing and transmitting various control parameters, commands, and monitoring data exchanged between the central processing unit of the host and the medium access control processing unit under the control of the synchronization / timing control means, or to generate a control signal. Control interfacing means.

On the other hand, the present invention provides a method for transmitting a medium access control apparatus for real-time high-speed data processing, wherein the direct memory access (DMA) control means uses one MPDU (in the transmission queue of an external host) in response to a transmission request signal from the outside. Receiving a first MAC protocol data unit); A second step of WEB encrypting means receiving and encrypting the MAC Protocol Data Unit (MPDU) and storing it in the transmission storage means under the control of the transmission control means; The transmission protocol control means determines whether the section to be transmitted is a distributed control method section or a central control method section, and if the distributed control method section, the transmission processing means performs a distributed control method procedure under the control of the transmission protocol control means, A third step of performing, by the transmission processing means, a central control method procedure under the control of the transmission protocol control means in the central control method section; A fourth step of, after the transmission processor confirms that the frame stored in the transmission storage means is a beacon or probe response frame, the synchronization / timing control means generates a time stamp and inserts it into the frame stored in the transmission storage means; A fifth step of generating, by the CRC generating means, the CRC and inserting the CRC into a frame stored in the transmission storing means; And a sixth step of transmitting the frame stored in the transmission storage means and the repeated frame generated by the transmission protocol control means to the physical layer interface under the control of the synchronization / timing control means and the transmission processing means.

In addition, the present invention, in the receiving method of the medium access control processing apparatus for real-time high-speed data processing, receiving a frame from the physical layer interface under the control of the receiving protocol control means and the synchronization / timing control means to store in the receiving storage means A first step of making; A second step of the receiving processing means requesting the CRC checking for the received frame from the CRC checking means, receiving the result and determining the validity; A third step of discarding the received frame by the reception processing means if it is an invalid frame as a result of the validity determination of the second step; A fourth step of the reception processing means performing filtering on the received frame if the validity determination result of the second step is a valid frame; A fifth step of de-encrypting the WEP de-encryption means for the filtered received frame and storing the decoded data in the form of a MAC Protocol Data Unit (MPDU); And a sixth step of transmitting the received frames stored in the storage means to the reception queue of the host in a predetermined block unit under the control of a direct memory access (DMA) controller.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an embodiment of a system including a media access control apparatus according to the present invention.

In FIG. 1, reference numeral 10 denotes a host in which software for a medium access control processor is installed, and includes a central processing unit (CPU) and a memory, which is a transmission queue for storing data transmitted or received. And receive queue.

&Quot; 11 " is a medium access control processing apparatus which receives data to be transmitted through a DMA controller from a transmission queue in a memory of a host 10 on which software for the medium access control processing apparatus is installed. Transfers the data to the reception queue in the memory of the host 10 in which the software for the media access control processing apparatus is installed.

2 is a block diagram of an embodiment of a media access control apparatus according to the present invention.

As shown in FIG. 2, the media access control processing apparatus 220 according to the present invention receives a transmission frame from a transmission queue of a host on which software for the media access control processing apparatus 220 is installed. Transmission processing unit 218 for transmitting to physical layer interface 217 after performing WEP encryption, time stamp insertion, CRC check insertion, etc., under the control of synchronization / timing controller 204 and transmission protocol controller 205, physical After receiving a frame from the layer interface 217 and performing frame validation, frame filtering, WEP de-encryption, etc. under the control of the synchronization / timing controller 204 and the reception protocol controller 208, the media access control processor ( The reception processing unit 219, the transmission processing unit 218 and the reception processing unit 219 for transmitting to the reception queue of the host equipped with the software for the 220, collectively A transmission protocol controller 205 for controlling the transmission processing unit 218 according to the control of the synchronization / timing controller 204, the medium access control protocol, and the synchronization / timing controller 204 for determining and controlling channel conditions. ), The medium under the control of the reception protocol controller 208 and the synchronization / timing control means 204 for controlling the reception processing unit 219 under the control of the medium access control protocol and the synchronization / timing controller 204. DMA for real-time transmission and reception of data between the transmission / reception queue area set in the memory of the host 10 on which the software for the access control device 220 is mounted and the media access control device 220. The central processing unit and the media access agent of the host 10 in which the software for the medium access control processing unit 220 is mounted under the control of the controller 202 and the synchronization / timing controller 204. Temporary storage of various control parameters, instructions and monitoring data exchanged between the processing unit 220 and transmits, or a control interface (203) for generating a control signal.

Meanwhile, the transmission processor 218 includes a transmission processor 206, a transmission FIFO 213, a transmission FIFO controller 215, a WEP encoder 209, and a CRC generator 211, and the reception processing unit 219 includes: A reception processor 207, a reception FIFO 214, a WEP decoder 210, a dual port RAM 216, and a CRC checker 212, which will be described in detail later.

Next, each component of the media access control processing apparatus according to the present invention will be described in detail with reference to FIG.

First, the cardbus interface 201 performs a 32-bit cardbus interface function.

The DMA controller 202 is a direct memory access control function for real-time transfer of data between a queue area set in a memory of a host 10 in which software for a media access control apparatus and a medium access control processor are installed. Do this.

The control interface 203 temporarily stores various control parameters, commands, and monitoring data exchanged between the central processing unit of the host 10 on which the software for the medium access control processing device is mounted and the media access control processing device. It transmits or generates a control signal.

The synchronization / timing controller 204 has an inter frame space (IFS), a slot timing generation function, a timing synchronization function, a beacon timing generation function, a common clock generation function, and a channel state determination function required by the media access control processing device. Do this.

The transmission protocol controller 205 divides into a terminal mode and an access point (AP) mode in order to transmit data, and performs transmission protocol control based on distributed control and central control and transmission protocol control based on power management. It also performs the function of controlling the transmission FIFO 213 and the WEP encoder 209.

The transmission processor 206 is a control function for outputting the MAC Protocol Data Unit (MPDU) data stored in the transmission FIFO 213 to the physical layer interface 217 in synchronization with the Inter Frame Space (IFS) timing. Performs backoff for validation insertion, timestamp insertion and retransmission in case of transmission failure.

The reception processor 206 receives a frame received from the physical layer interface 217 and transmits a control signal to the synchronization / timing controller 204 and the reception protocol controller 208 through frame validation and frame filtering. The data is transmitted to the decoder 210.

In this case, the frame validity check performs a 32-bit CRC check to detect a transmission error of a frame and checks the protocol version and the reception state. 204). On the other hand, the frame filtering process determines the received frame address and removes the duplicated frame, and if the frame is normally received, analyzes the frame header to transmit the control signal to the reception protocol controller 208, extracts the duration field, and extracts the NAV. The control signal is transmitted to the synchronization / timing controller 204 to update the Network Allocation Vector.

The reception protocol processor 208 performs a reception protocol control function of a distributed control method and a central control method and a reception protocol control function based on power management.

The WEP encoder 209 encrypts a transmission frame in units of a MAC Protocol Data Unit (MPDU), and the WEP decoder 210 performs a function of de-encrypting a reception frame.

The CRC generator 211 generates a 32-bit CRC of a transmission frame in units of a MAC Protocol Data Unit (MPDU), and the CRC checker 212 performs a function of CRC checking a received frame to identify a frame error.

The transmission FIFO 213 temporarily stores one transmission frame or a MAC Protocol Data Unit (MPDU) to be transmitted under the control of the transmission protocol controller 205 and then controls the physical layer interface 217 under the control of the transmission processor 205. It outputs data with).

The receiving FIFO 214 temporarily stores the frame transmitted from the physical layer and outputs the frame under the control of the receiving processor 207.

The transmit FIFO controller 215 multiplexes the input / output signals of the transmit FIFO 213 to generate a transmit FIFO enable signal.

The dual port RAM 216 temporarily stores received frames or MPDUs (MAC Protocol Data Units), which have been validated and filtered, in a predetermined block unit, and then controls software for a media access control processor under the control of the DMA controller 202. Performs a function of outputting to a reception queue of a memory in a mounted host 10.

The physical layer interface 217 performs a function of mutually transferring control signals and data defined between the physical layer and the media access control processing apparatus.

3 is a flowchart illustrating a transmission method in a media access control processing apparatus according to an embodiment of the present invention.

As shown in FIG. 3, first, a DMA controller 202 is configured to transmit a single MPDU (MAC Protocol) in a transmission queue of a host 10 having software for a medium access control apparatus in accordance with a transmission request signal from the outside. Data Unit (301) is received (301), the MAC Protocol Data Unit (MPDU) is encrypted by the WEB encoder 209 and stored in the transmission FIFO 213 via the transmission FIFO controller 215 (302).

The transmission protocol controller 205 determines whether the section to be transmitted is a distributed control method section or a central control method section (303). If the determination result is a distributed control method section, the control of the transmission protocol controller 205 is performed. The transmission processor 206 performs the distributed control procedure (304).

That is, the transmission processor 206 checks the channel state during the DIFS (DCF Inter Frame Space). If the channel state is idle and the transmission frame generation condition is satisfied, the transmission processor 206 performs the RTS ( Request To Send) frame is transmitted to the physical layer interface 217 to receive a CTS frame in response to the transmitted RTS frame. As a result of the check, if the channel state is busy, the backoff procedure is performed after a continuous DCF Inter Frame Space (DIFS).

On the other hand, as a result of determining whether the transmission protocol controller 205 attempts to transmit is a distributed control method section or a central control method section (303), and if the transmission protocol controller 205 is controlled by the transmission protocol controller (205). 206 performs a centralized control procedure (305).

Thereafter, if the frame stored in the transmission FIFO 213 is a beacon or probe response frame (306), if the check result, the beacon or probe response frame, the sync / timing controller 204 generates and transmits a time stamp. After inserting the frame stored in the FIFO 213 (307), the process proceeds to step 308, and if it is not a beacon or probe response frame, the process proceeds directly to step 308. Thereafter, the CRC generator 211 generates a CRC and inserts the CRC into a frame stored in the transmission FIFO 213 (308). In addition, the transmission protocol controller 205 generates a repetitive frame necessary for transmission in accordance with the transmission request (309).

Subsequently, the frames stored in the transmission FIFO 213 and the transmission protocol controller 205 are generated at a short inter frame space (SIFS) interval generated by the synchronization / timing controller 204 under the control of the transmission processor 206. The repetition frame is transmitted to the physical layer interface 217 (310).

At this time, in the distributed control mode, the MPDU (MAC Protocol Data Unit) which is continuous from the transmission queue of the host 10 having the software for the embedded access control device in the DMA controller 202 during the repeated frame transmission. Request to send). The DMA controller 202 then requests the MAC protocol data unit (MPDU) to be encrypted by the WEB encoder 209 and stored in the transmission FIFO 213 via the transmission FIFO controller 215.

4 is a flowchart illustrating a receiving method in a media access control processing apparatus according to an embodiment of the present invention.

First, when a frame is received from the physical layer interface 217, it is stored in the reception FIFO 214 (401). The reception processor 207 then requests the CRC checker 212 to check the CRC, and as a result determines the validity, and performs filtering on the valid frames.

First, the validity determination is performed by the CRC checker 212, which has been requested for CRC checking, performs a CRC check on the received frame, and the receiving processor 207 determines the validity by checking the protocol version and the reception state of the received frame. (402).

If the validity determination result 203, if it is an invalid frame discards the received frame and ends (404), if the validity determination result, the reception processor 207 determines whether the received frame is a beacon or probe response frame. In step 405, if the beacon or probe response frame, the time stamp is extracted and transmitted to the synchronization / timing controller 204 to synchronize the timing of the access point and the mobile terminal (406) and perform filtering on the received frame. If it is not a beacon or probe response frame, the process proceeds to the process of filtering the received frame.

The frame filtering is performed by the reception processor 207 to determine a frame address to determine whether the received frame is a duplicated frame (407). If the received frame is a duplicated frame, the frame filtering removes the received frame and ends (408). If the frame is not duplicated, the header of the received frame is analyzed and the control signal is transmitted to the reception protocol controller 208. The duration field is extracted and the control signal is transmitted to the synchronization / timing controller 204. Vector) is updated (409).

Subsequently, the frame that has undergone the frame filtering is stored in the dual port RAM 216 in the form of a MAC Protocol Data Unit (MPDU) through a reverse encryption process in the WEP decoder 210 (410). Then, the MPDUs stored in the dual port RAM 216 are transmitted to the reception queue of the host 10 that has the software for the media access control apparatus in a predetermined block unit under the control of the DMA controller 202 (411). ).

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, the present invention integrates and implements the timing / timing controller without distributing and processing all the timing generation required in the media access control processing device, thereby minimizing the implementation code required for such timing generation and making timing management easy. .

In addition, the present invention generates and processes all timings required by the media access control apparatus in real time in the synchronization / timing controller, thereby minimizing data delay even though the media access control apparatus is in an idle state. There is an effect that high-speed data processing can be performed.

Claims (8)

In the medium access control processing apparatus, A medium for receiving a transmission frame from a transmission queue of an external host and performing WEP encryption, time stamp insertion, CRC check insertion, etc. according to the control of the synchronization / timing control means and the transmission protocol control means, and then transmitting to an external physical layer interface. Access control transmission processing means; Receiving a frame from the physical layer interface, performing a frame validation, frame filtering, WEP de-encryption, etc. under the control of the synchronization / timing control means and the reception protocol control means, and then accessing the medium to the reception queue of the host. Control receiving processing means; The synchronization / timing control means for collectively generating and controlling timing required for the medium access control transmission processing means and the medium access control receiving processing means, and for determining a channel state; The transmission protocol control means for controlling the transmission processing means according to a medium access control protocol and the control of the synchronization / timing control means; The reception protocol control means for controlling the medium access control reception processing means according to the control of the medium access control protocol and the synchronization / timing control means; Direct memory access (DMA) control means for real-time transmission / reception of data between the transmission / reception queue area of the host and the medium access control apparatus under the control of the synchronization / timing control means; And Control for temporarily storing and transmitting various control parameters, commands and monitoring data exchanged between the central processing unit of the host and the medium access control processing unit by the control of the synchronization / timing control means or generating a control signal. Interfacing means Media access control processing apparatus for real-time high-speed data processing comprising a. The method of claim 1, The medium access control transmission processing means, Receives a transmission frame from a direct memory access (DMA) control means, encrypts it in a WEP (Wired Equivalent Privacy) method under the control of the synchronization / timing control means, and transmits the transmission frame to the transmission storage means under the control of the transmission control means. WEP encryption means for storing; The transmission storing means for temporarily storing the transmission frame under the control of the transmission control means and then transmitting the transmission frame to the transmission processing means; The transmission control means for generating an enable signal for controlling the transmission storage means by the control of the transmission protocol control means; CRC generation means for generating a CRC under the control of the transmission processing means and inserting the CRC into a transmission frame stored in the transmission storage means; And Outputting a transmission frame in the form of a MAC Protocol Data Unit (MPDU) received from the transmission storage means to the physical layer interface according to the control of the synchronization / timing control means and a medium access control protocol, inserting a validity check, inserting a time stamp, and The transmission processing means for performing a backoff function Media access control processing apparatus for real-time high-speed data processing comprising a. The method of claim 1, The medium access control reception processing means, Reception storage means for receiving and temporarily storing a reception frame from the physical layer interface according to a medium access control protocol and control of the synchronization / timing control means; Under the control of the medium access control protocol and the synchronization / timing control means, the received frame is received from the receiving storage means, the CRC check of the CRC checking means is performed, the frame validity checking and the filtering is performed, and the WEP de-coding means is transmitted. Receiving processing means; CRC checking means for performing a CRC check on a received frame received from the receiving processing means to check a frame error and returning the frame error; The WEP de-encryption means for de-encrypting the received frame encrypted by the WEP (Wired Equivalent Privacy) method received from the reception processing means and storing it in the temporary storage means; And The temporary storage means for receiving and temporarily storing a received frame from the WEP de-encryption means and transmitting the received frame to a receive queue of the host under the control of the direct memory access (DMA) control means; Media access control processing apparatus for real-time high-speed data processing comprising a. The method of claim 3, wherein The reception processing means, The received frame is a beacon or a frame validity check such as checking a CRC test result through the CRC checking means, checking a protocol version of the received frame, controlling an expiration time limit of a CTS frame, and extracting a time stamp of a beacon or probe response frame. And a time stamp is extracted and transmitted to the synchronization / timing control means for a probe response frame. The method of claim 3, wherein The reception processing means, Determining the address of the received frame to remove the duplicate frame if received, and filtering the frame header if the frame is received normally, and transmits a control signal to the receiving protocol control means, the receiving protocol control means to the duration field And accessing the control signal to the synchronization / timing control means to extract and update a network allocation vector (NAV). The method according to any one of claims 1 to 5, The synchronization / timing control means, Inter Frame Space (IFS) and slot timing, beacon timing, backoff timing, including Short Inter Frame Space (SIFS), PCF Inter Frame Space (PIFS), and DCF Inter Frame Space (DIFS) A medium access control processing apparatus for real-time high-speed data processing, characterized in that for generating a common clock timing. A transmission method of a medium access control processing apparatus for real time high speed data processing, A first step in which a direct memory access (DMA) control means receives one MPDU (MAC Protocol Data Unit) in a transmission queue of an external host according to a transmission request signal from the outside; A second step of WEB encrypting means receiving and encrypting the MAC Protocol Data Unit (MPDU) and storing it in the transmission storage means under the control of the transmission control means; The transmission protocol control means determines whether the section to be transmitted is a distributed control method section or a central control method section, and if the distributed control method section, the transmission processing means performs a distributed control method procedure under the control of the transmission protocol control means, A third step of performing, by the transmission processing means, a central control method procedure under the control of the transmission protocol control means in the central control method section; A fourth step of, after the transmission processor confirms that the frame stored in the transmission storage means is a beacon or probe response frame, the synchronization / timing control means generates a time stamp and inserts it into the frame stored in the transmission storage means; A fifth step of generating, by the CRC generating means, the CRC and inserting the CRC into a frame stored in the transmission storing means; And A sixth step of transmitting the frame stored in the transmission storage means and the repeated frame generated by the transmission protocol control means to the physical layer interface under the control of the synchronization / timing control means and the transmission processing means; Transmission method of a media access control processing apparatus for real-time high-speed data processing comprising a. A reception method of a medium access control processing apparatus for real time high speed data processing, A first step of receiving a frame from a physical layer interface under the control of the reception protocol control means and the synchronization / timing control means and storing it in the reception storage means; A second step of the receiving processing means requesting the CRC checking for the received frame from the CRC checking means, receiving the result and determining the validity; A third step of discarding the received frame by the reception processing means if it is an invalid frame as a result of the validity determination of the second step; A fourth step of the reception processing means performing filtering on the received frame if the validity determination result of the second step is a valid frame; A fifth step of de-encrypting the WEP de-encryption means for the filtered received frame and storing the decoded data in the form of a MAC Protocol Data Unit (MPDU); And A sixth step of transmitting the received frames stored in the storage means to the reception queue of the host in a predetermined block unit under the control of a direct memory access (DMA) controller; Method of receiving a media access control processing apparatus for real-time high-speed data processing comprising a.