KR100732531B1 - Method and apparatus for adjusting mac protocol to wireless access networks - Google Patents

Abstract

An MAC(Medium Access Control) method of a wireless access network and a device thereof are provided to allocate priority to an AP(Access Point) instead of a terminal, and to control the number of times the priority is allocated, thereby adjusting a ratio of the uplink and downlink quantities of packet transmission between the terminal and a basis network device. Packet transmission frequency, reception frequency, and a comparison value calculated by predetermined rules from the packet transmission frequency and the reception frequency of a basis network device are initialized(501,503). Packets are transmitted by using different medium access IFSs(Inter Frame Spaces) according to the comparison value(505-509). The packet transmission frequency, the reception frequency, and the comparison value of the basis network device are counted(513). The network device stores transceived packet information in an AP(519). It is decided whether transceiving time of the packets is prior to reference time(521). If so, it is decided whether a destination MAC address of the packets refers to the network device(523). The packet transmission frequency and the reception frequency are counted according to predetermined rules based on the decided transceiving time and the destination MAC address(527). Information of packets whose transceiving time is prior to the reference time is deleted from the network device(529).

Description

Method and apparatus for controlling media access in wireless access network {Method and apparatus for adjusting MAC protocol to wireless access networks}

1 is a block diagram showing a structure of a general wireless communication network having an access point (AP) as a base network device;

2 is a block diagram showing a method of media access through competition in the DCF environment;

3 is a block diagram comparing a medium access method according to the present invention and a conventional medium access method;

FIG. 4 is a block diagram showing an embodiment in which an AP operates by converting a medium access method as a base network device according to an embodiment of the present invention; FIG.

FIG. 5 is a flowchart illustrating a case in which an amount of packet transmission in an AP is automatically adjusted as a base network device and a packet information storage device is provided in the AP according to an embodiment of the present invention.

FIG. 6 is a flowchart illustrating a case in which a packet transmission amount in an AP is automatically adjusted and there is no packet information storage device in the AP as a base network device in another embodiment according to the present invention; FIG.

FIG. 7 is a flowchart illustrating a case in which a packet transmission amount in an AP is manually adjusted and there is a packet information storage device in the AP as a base network device in another embodiment according to the present invention;

FIG. 8 is a flowchart illustrating a case where a packet transmission amount at an AP is manually adjusted as a base network device and there is no packet information storage device in the AP according to another embodiment according to the present invention.

The present invention relates to a method and apparatus for controlling a medium access of a wireless access network, and more particularly, to a base network device and a terminal in a carrier sense multiple access (CMA / CA) based wireless communication network system for data collision prevention. The present invention relates to a method and an apparatus for adjusting the amount of packet transmission.

FIG. 1 illustrates a general wireless communication network 11 structure including an access point 101 and a plurality of terminals 102, 103, and 104 as a base network device. The access point 101 is connected to the external network 30 by a wired link 20 or a wireless link to relay data between the terminal and the external network. The AP and the terminal access data transmission media in a competitive manner and transmit data packets.

IEEE 802.11, a standard widely used as a competitive media access method, defines several time intervals between packets. This time interval is called Interframe Space (IFS).

The media access control (MAC) protocol proposed in IEEE 802.11 consists of two control schemes: distributed coordination function (DCF) and point coordination function (PCF). Among them, DCF, the most basic control function, is a CSMA / CA protocol and has a distributed control method that can operate simultaneously on multiple terminals. Terminals with data to be transmitted continue to detect the current use of the channel and if the channel is detected to remain unused during the slot time of DIFS (Distributed Coordination Function Interframe Space), the minimum time required for DCF to operate. The back-off timer set to an arbitrary value is decreased while the channel is not used, and data is transmitted through the channel when the backoff timer time reaches zero.

On the other hand, when the channel is in use, the back off timer time remains undecreased and is not reduced until the slot time where the channel is not used is given by DIFS. The DCF has a distributed control form, and each terminal has a contention period in which each terminal competes with each other to use a channel.

In addition to the DCF, the PCF, which is a medium access control method, has a higher operation priority than the DCF by using an IFS smaller than the IFS (Interframe Space) used by the DCF. Since Point Coordination Function Interframe Space (PIFS) has a smaller value than DIFS, PCF operates before DCF to manage channel occupancy. In the PCF method, the AP acts as a kind of polling master, and thus has a central control mode. Unlike the DCF, the AP has a channel usage right through the polling method.

The two modes of media access control, DCF and PCF, work in turn, and these pairs combine to form a superframe. When this superframe starts, the PCF always takes precedence over the DCF and manages the channel. Therefore, synchronization is performed in units of superframes, and all UEs except for APs in which PCF is implemented at the beginning of the superframe set a NAV (Network Allocation Vector) value to a large value to give an operation priority to the DCF. do.

2 shows packet transmission using two IFSs. The upper part shows the packet sent by the sender, and the lower part shows the packet sent by the receiver. After exchange of Request to Send Frame (RTS) / Clear to Send Frame (CTS), data is sent. If the data is received correctly, the receiver sends an ACK (Acknowledge) to indicate that data is well delivered. In the continuous operations for sending one packet, that is, RTS / CTS / DATA / ACK, all use Short Interframe Space (SIFS). After that, the other terminal waits for a back-off period with DIFS to transmit the packet. The back-off period is set to random. If the same back-off value is set between two terminals to be transmitted by chance, packet transmission occurs at the same time, resulting in packet collision. If a collision occurs between these packets, the packet transmission will fail, and the two terminals causing the collision will attempt to transmit again by arbitrarily setting a larger back-off.

Each packet contains the address of the sending terminal and the receiving terminal so that it is possible to know who sent the packet and who received the packet. This address is called a MAC (Medium Access Control) address, and each terminal and the AP have their own unique MAC address.

In the prior art IEEE 802.11, since the AP and the terminal both use the same medium access method, the AP and the terminal have the same priority with respect to the medium access. This phenomenon is maintained even when the AP is heavily loaded and there are many packets to send.

Therefore, in the data transmission between the AP and the terminal as a conventional network device, data transmission from the AP to the terminal (hereinafter referred to as up-link) is generally compared to the amount of data transmission from the terminal to the AP (hereinafter, referred to as up-link). Considering that the amount of downlink (down-link) is much higher, in the distributed control environment, data uplink and data downlink are allocated while the same channel usage is allocated in the case of data uplink transmission and data downlink transmission. If the channel usage cannot be adjusted, the CSMA / CA MAC protocol has a problem that the data downlink latency is considerably longer, which delays data transmission.

In addition, in the data transmission between the AP and the terminal as a conventional network device, SIFS or PIFS is used for multicast or broadcast, and only DIFS is used for unicast. The same problem occurs as described above.

The present invention is to solve the problems described above, the priority is given to the base network device compared to the terminal in the medium access of the radio access network, and the number of priorities are adjusted, so that the uplink between the base network device and the terminal And a ratio of downlink packet transmission amount to be adjusted.

In order to achieve the above object, the media access control method of a wireless access network according to an embodiment of the present invention, a wireless access network based network apparatus and a terminal accesses a data transmission medium in a competitive manner to transmit a packet In the medium access control method, an IFS with a back-off and an IFS without a back-off are used together as an Interframe Space (IFS) of the base network device, and the back-off is accompanied. The IFS has a longer latency than the IFS that does not involve the back-off, and the frequency of use of the IFS that does not involve the back-off is adjusted according to the number of times the base network device transmits or receives packets. .

Preferably, the frequency of use of the IFS that does not involve the back-off is adjusted according to the number of times the base network device transmits or receives a packet and the packet information transmitted and received by the base network device.

In addition, in order to achieve the above object, in the medium access control method of a wireless access network according to another embodiment of the present invention, a network device and a terminal based on a wireless access network transmits a packet by accessing the data transmission medium in a competitive manner In the medium access control method of a wireless access network, IFS with back-off and IFS without back-off are used together as Interframe Space (IFS) of the base network device. IFS with off has longer latency than IFS without back-off, and the frequency of use of IFS without back-off is dependent on the number of times the base network device has sent or received packets. It is adjusted according to the administrator setting value S in the base network device.

Preferably, the frequency of use of the IFS that does not involve the back-off is determined by the number of times the base network device transmits or receives a packet, the manager setting value S of the base network device, and the transmission / reception at the base network device. It is adjusted according to the packet information.

On the other hand, in order to achieve the above object, the media access control apparatus for a wireless access network according to another embodiment of the present invention, the network device and the terminal based on the wireless access network to access the data transmission medium in a competitive manner to transmit the packet A medium access control method for a wireless access network, comprising: means for initializing a packet transmission count, a reception count, and a comparison value M calculated by a predetermined rule from the transmission count and the reception count of the base network apparatus according to the comparison value Means for transmitting packets using different medium access latency (IFS) Means for counting packet transmission count, number of receptions and the comparison value of the base network apparatus Radio access network Means for determining whether the predetermined upper limit value set by the administrator is exceeded.

In accordance with another aspect of the present invention, an apparatus for controlling access to a medium of a wireless access network includes a packet transmission count, a reception count, and a comparison value M calculated by a predetermined rule from the transmission count and the reception count of the base network apparatus. Means for initializing; Means for transmitting a packet using different medium access latency (IFS) according to the comparison value; Means for counting the number of packet transmissions, the number of receptions, and the comparison value of the base network device; Means for storing packet information transmitted and received at the base network device to the base network device; Means for determining whether a transmission time of the packet is earlier than a reference time; Means for determining if a destination MAC address of the packet is a base network device; Means for counting packet transmission times and reception times according to a predetermined rule based on the determined packet transmission time and packet destination MAC address; And means for deleting at the base network device information of the packet whose transmission time is earlier than the reference time.

In addition, in order to achieve the above object, according to another embodiment of the present invention, the apparatus for accessing a medium of a wireless access network, a network device and a terminal based on a wireless access network transmits a packet by accessing a data transmission medium in a competitive manner. A medium access control apparatus for a wireless access network, comprising: means for initializing packet transmission count, reception count, and administrator set value (S) of the base network apparatus; Means for comparing the packet [number of transmissions / number of receptions] and [set value (S)] and transmitting a packet using different medium access waiting times (IFS) according to a predetermined rule; Means for counting packet transmission times and reception times of the AP; Means for determining whether the number of times of packet transmission and number of times of reception of said base network device exceeds a predetermined upper limit set by a radio access network manager.

Preferably, means for initializing the number of packet transmissions, the number of receptions and the manager set value (S) of the base network device; Means for comparing the packet [number of transmissions / number of receptions] and [administrator setting value] to transmit a packet using different medium access waiting time (IFS) according to a predetermined rule; Means for counting packet transmission times and reception times of the base network device; Means for storing packet information transmitted and received at the base network device to the base network device; Means for determining whether a transmission time of the packet is earlier than a reference time; Means for determining if a destination MAC address of the packet is a base network device; Means for counting packet transmission times and reception times according to a predetermined rule based on the determined packet transmission time and packet destination MAC address; And means for deleting at the base network device information of the packet whose transmission time is earlier than the reference time.

On the other hand, the data transmission method between the base network device and the terminal of the wireless access network is a multicast method or a broadcast method or a unicast method,

The medium access latency (IFS) includes a DCF interframe space (DIFS), a short interframe space (SIFS), a PCF interframe space (PIFS), or an extended interframe space (EIFS).

The means for counting the number of packet transmissions and the number of receptions of the base network apparatus is a counter, and counts the number of packets transmitted and received by the base network apparatus by reading the information recorded in the packet header.

The base network device also includes a storage device that stores information about packets transmitted and received by the base network device. The packet information is, for example, a destination MAC address of a packet transmitted and received at the base network device and a time at which the packet is transmitted and received.

In particular, the base network device in the present invention is preferably a base station or an access point (Access Point, AP).

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

FIG. 3 illustrates a case in which a method using IFS with a back-off and a method using an IFS without a back-off are applied together as a predetermined interframe space (IFS) for accessing a wireless medium. It is shown.

Comparing the two methods, after the transmission between the terminal 1 and the terminal 2 is finished, the terminal 3 attempts to transmit the packet after waiting for the DIFS and the back-off period, but the base network device waits only for the PIFS period and then the packet without the back-off Attempt the transfer. Thus, the underlying network device has priority in packet transmission.

FIG. 4 shows a terminal with different packet transmissions in the base network apparatus when the above two methods (the method of using IFS with back-off and the method of using IFS without back-off) are applied together. This is an example of interruption and priority between data transfers.

That is, while the data transmission scheme as shown in FIG. 2 is executed, the data transmission scheme using PIFS is transmitted without prior back-off and thus has priority.

However, if the base network device always uses PIFS, since the base network device always maintains a higher priority than other terminals, it is necessary to adjust the PIFS frequency of the base network device in an appropriate manner.

Hereinafter, with reference to FIGS. 5 to 8, a preferred embodiment of a PIFS usage automatic adjustment method and a manual adjustment method of an access point (AP) functioning as a base network device will be described.

<Example 1>

FIG. 5 is a flowchart illustrating a case where a packet transmission amount is automatically adjusted in an access point (AP) functioning as a base network device, and a packet information storage device is provided in the AP, and shows an automatic PIFS frequency adjustment method of the AP. to be.

In step 501, an uplink packet counter that counts the number of times an AP receives a packet from the outside, a downlink packet counter that counts the number of times the AP transmits a packet to the outside, and a count of the uplink packet counter and a count of the downlink packet counter An AP with an operational packet comparison counter waits for access to a wireless communication network.

In step 503, the count value UP of the uplink packet counter is initialized to 1, the count value DN of the downlink packet counter is also initialized to 1, and the count value (comparison value M, M <= of the packet comparison counter). M- [count of downlink packet counter] / [count of uplink packet counter]) is initialized to zero.

When the AP transmits the packet (step 505), the AP determines the sign of the coefficient of the packet comparison counter (step 507). If the sign of the coefficient in the group packet compares the counter is positive, the back-to without causing off using only the PIFS send packets and involves a (step 509), if the code is 0, or a negative coefficient of the packet compared to the counter backoff The packet is transmitted using DIFS (step 511). When the AP transmits a packet, the count of the downlink packet counter is increased by one, and the count of the packet comparison counter is also increased by one (step 513).

On the other hand, when the AP receives a packet (step 515), the count of the uplink packet counter increases by 1, and the count M of the packet comparison counter decreases by [count of downlink packet counter] / [count of uplink packet counter]. (Step 517).

In addition, when the AP transmits or receives a packet, information on the packet (the destination MAC address of the packet and the time at which the packet is transmitted and received) is stored in the AP (step 519). The AP according to the present invention has a separate storage device (memory area) for use for the storage purpose.

In step 521, the packet information stored in the AP is checked for packet information that is earlier than [current time-W] at the time when the packet is transmitted from the AP or when the packet is received at the AP. W is a time value representing a predetermined period, and is a design value of a radio access network and can be changed by a radio access network designer.

For example, if (a) a packet is transmitted from the AP at 10:57 am, the current time is 11:05 am, and the W value is '10 minutes', [11:05-10 minutes] = [10:50], the (a) packet information does not correspond to 'packet information older than [current time-W]'. Accordingly, (a) the packet information is continuously stored in the memory area of the AP. do.

However, if (b) a packet is transmitted from the AP at 10:57 am, the current time is 11:05 am, and the W value is '5 minutes', then [11: 05-5 minutes] = [11: 00], the information of the packet (a) corresponds to 'packet information older than [current time-W]'.

As described above, the packet information earlier than [current time-W] is determined by the AP whether the destination MAC address of the packet is the AP (step 523).

If the destination MAC address of the packet is the AP, the count of the uplink packet counter in the AP (the number of packet receptions in the AP) decreases by one (step 525). If the destination MAC address of the packet is not the AP, the count of the downlink packet counter in the AP is decreased. The number of packet transmissions in the AP is reduced by one (step 527). The packet information older than the [current time-W] is deleted from the memory area of the AP (step 529). Subsequently, the process after step 521 is repeated until there is no packet information earlier than [current time-W].

Therefore, according to the method shown in FIG. 5, the PIFS usage frequency of the AP is automatically adjusted in proportion to the load received by the AP from the wireless network, and accordingly, a ratio of [packet amount of AP] vs. [packet amount of terminal] This is regulated.

Meanwhile, in the method of automatically adjusting the PIFS frequency of the AP shown in FIG. 5, a storage device (memory region) for storing the MAC address and arrival time of the packet is required. As W increases, or as the number of packets transmitted and received by the AP increases, a larger storage device is required. A method of automatically adjusting the PIFS usage frequency of the AP without such a storage device is shown in FIG. 6.

<Example 2>

FIG. 6 is a flowchart illustrating a case in which a packet transmission amount in an access point (AP) functioning as a base network device is automatically adjusted and there is no packet information storage device in the AP. to be.

In the method of FIG. 6, the same process (from 601 to 617) as in steps 501 to 517 of FIG. 5 is performed as it is.

However, the count of the uplink packet counter and the count of the downlink packet counter continue to increase.

The AP checks whether the uplink packet counter coefficient or the downlink packet counter coefficient reaches the upper limit T determined by the radio access network system administrator (step 619). If the upper limit is exceeded, the counter counting process returns to step 603, and the uplink packet counter and the downlink packet counter are initialized.

Therefore, as shown in FIG. 6, if the packet counter counter is initialized and the upper limit value is set, the packet comparison counter is automatically counted and automatically repeated from step 603 to step 619, so that the AP's PIFS is used in proportion to the load received by the AP from the wireless network. The frequency is automatically adjusted, and thus the ratio of the packet transmission amount at the AP to the packet transmission amount at the terminal is adjusted.

<Example 3>

FIG. 7 is a flowchart illustrating a case where a packet transmission amount in an access point (AP) serving as a base network device is manually adjusted and there is a packet information storage device in the AP. to be.

In step 701, an access point (AP) having the uplink packet counter and the downlink packet counter waits.

The designer of the wireless access network initializes the uplink packet counter coefficient and the downlink packet counter coefficient to 1, respectively, and sets the manager setting value (S = reference packet data amount to be transmitted per unit time / reference packet data amount to be received by the AP per unit time). Set and store in the AP (step 703).

In step 705, it is determined whether the AP transmits a packet.

When the AP transmits the packet, the S value is compared with the [Down packet counter count value / Up packet counter count value] (step 707).

If the S value is larger, a PIFS that does not involve back-off is used (step 709). If the S value is smaller or equal, a packet is transmitted using DIFS that involves back-off (step 711). When the AP transmits the packet, the count of the downlink packet counter is increased by one (step 713).

On the other hand, when the AP receives the packet (step 715), the count of the uplink packet counter is increased by one (step 717).

In addition, when the AP transmits or receives a packet, information on the packet (the destination MAC address of the packet and the time at which the packet is transmitted and received) is stored in the AP (step 719). The AP according to the present invention has a separate storage device (memory area) for use for the storage purpose.

In operation 721, the AP checks whether there is packet information in the packet information stored in the AP that is earlier than the [current time-W] when the packet is transmitted from the AP or when the packet is received by the AP. W is a time value representing a predetermined period, and is a design value of a radio access network and can be changed by a radio access network designer.

For example, if (a) a packet is transmitted from the AP at 10:57 am, the current time is 11:05 am, and the W value is '10 minutes', [11:05-10 minutes] = [10:50], the (a) packet information does not correspond to 'packet information older than [current time-W]',

Accordingly, (a) packet information is continuously stored in the memory area of the AP.

However, if (b) a packet is transmitted from the AP at 10:57 am, the current time is 11:05 am, and the W value is '5 minutes', then [11: 05-5 minutes] = [11: 00], the packet information (a) corresponds to 'packet information older than [current time-W]'.

In addition, the AP determines whether the destination MAC address of the packet transmitted 'before [current time-W]' is the AP (step 723).

If the destination MAC address of the packet is an AP, the count of the uplink packet counter is decreased by one (step 725). If the destination MAC address of the packet is not the AP, the count of the downlink packet counter is decreased by one (step 727). Information about the packet transmitted before '[current time-W]' is deleted from the memory area of the AP (step 729). Subsequently, the process after step 721 is repeated until there is no packet information earlier than [current time-W].

Therefore, according to the method shown in FIG. 7, the PIFS is used in the AP only when the ratio between the amount of packet transmissions transmitted and the amount of packet transmissions received by the AP is equal to or less than the S value, and thus the priority in packet transmission is limited. Packet transmission amount vs. [terminal packet transmission amount] can be adjusted.

On the other hand, in the manual control method of the PIFS frequency of the AP shown in FIG. 7 requires a storage device (memory region) for storing the MAC address and arrival time of the packet. However, as W increases, or as the number of packets transmitted and received by the AP increases, a larger storage device is required. The method of manually adjusting the PIFS usage frequency of the AP without such a storage device is shown in FIG. 8.

<Example 4>

8 is a flowchart illustrating a case where a packet transmission amount in an access point (AP) serving as a base network device is manually adjusted and there is no packet information storage device in the AP. FIG. to be.

In the method according to FIG. 8, the same process (from 801 to 817) as in step 701 to 717 of FIG. 7 is performed as it is.

However, the count of the uplink packet counter and the count of the downlink packet counter continue to increase, and the AP checks whether the counter count reaches the preset upper limit value T (step 819). Repeatedly, if the upper limit is exceeded, the counter counting process returns to step 803, and the uplink packet counter count and the downlink packet counter count are initialized to 1, and the manager set value (S = amount of reference packet data to be transmitted / The amount of reference packet data to be received by the AP) is also initialized to the initial setting value.

Therefore, as shown in FIG. 8, the PIFS usage frequency of the AP is adjusted in proportion to the load received by the AP from the wireless communication network, and thus, the ratio of the packet transmission amount at the AP and the packet transmission amount at the terminal is adjusted.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. Understand that

Could be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

According to the present invention, since the priority can be given to the base network device and the number of prioritizations can be adjusted in comparison with the terminal in the medium access of the wireless access network, the ratio of the uplink and downlink packet transmission rates between the base network device and the terminal is increased. I can regulate it.

Claims (27)

In the medium access control method of a wireless access network in which a network device and a terminal of a wireless access network transmit a packet by accessing a data transmission medium in a competitive manner, IFS with back-off and IFS with no back-off are used together as Interframe Space (IFS) of the network device. IFS with the back-off has a longer latency compared to IFS without the back-off, The frequency of use of the IFS that does not involve the back-off is adjusted according to the number of times the base network device has transmitted or received a packet. The method of claim 1, The frequency of use of IFS that does not involve the back-off is The number of times the base network device has sent or received a packet; Medium access control method of a wireless access network, characterized in that adjusted according to the packet information transmitted and received from the base network device. In the medium access control method of a wireless access network in which a network device and a terminal of a wireless access network transmit a packet by accessing a data transmission medium in a competitive manner, IFS with back-off and IFS with no back-off are used together as Interframe Space (IFS) of the network device. IFS with the back-off has a longer latency compared to IFS without the back-off, The frequency of use of IFS that does not involve the back-off is The number of times the base network device has sent or received a packet; Medium access control method of a wireless access network, characterized in that adjusted according to the administrator setting value (S) in the base network device. The method of claim 3, wherein The frequency of use of IFS that does not involve the back-off is The number of times the base network device has sent or received a packet; An administrator setting value (S) in the base network device; Medium access control method of a wireless access network, characterized in that adjusted according to the packet information transmitted and received from the base network device. The method according to claim 2 or 4, Packet information transmitted and received from the base network device is Transmission and reception times of packets transmitted and received by the base network device And a destination MAC address of a packet transmitted or received by the base network device. In the medium access control method of a wireless access network in which a network device and a terminal of a wireless access network transmit a packet by accessing a data transmission medium in a competitive manner, A first step of initializing a packet transmission count, a reception count, and a comparison value M calculated by a predetermined rule from the transmission count and the reception count of the base network apparatus; A second step of transmitting a packet using different medium access latency (IFS) according to the comparison value; Counting the number of packet transmissions, the number of receptions, and the comparison value of the base network device; A fourth step of storing packet information transmitted and received at the base network device to an AP; A fifth step of determining whether a transmission / reception time of the packet is earlier than a reference time; Determining whether the destination MAC address of the packet is a network device; A seventh step of counting packet transmission frequency and reception frequency according to a predetermined rule based on the determined packet transmission / reception time and packet destination MAC address; Network based on the information of the packet whose transmission time is earlier than the reference time And a eighth step of deleting from the device. In the medium access control method of a wireless access network in which a network device and a terminal of a wireless access network transmit a packet by accessing a data transmission medium in a competitive manner, A first step of initializing a packet transmission count, a reception count, and a comparison value M calculated by a predetermined rule from the transmission count and the reception count of the base network apparatus; A second step of transmitting a packet using different medium access latency (IFS) according to the comparison value; Counting the number of packet transmissions, the number of receptions, and the comparison value of the base network device; And a fourth step of determining whether the number of times of packet transmission and number of times of reception of the base network apparatus exceeds a predetermined upper limit set by a radio access network manager. In the medium access control method of a wireless access network in which a network device and a terminal of a wireless access network transmit a packet by accessing a data transmission medium in a competitive manner, A first step of initializing a packet transmission count, a reception count, and a manager set value S of the base network device; A second step of comparing the packet [number of transmissions / number of receptions] and the [administrator setting value] and transmitting a packet using different medium access waiting time (IFS) according to a predetermined rule; Counting the number of packet transmissions and the number of receptions of the base network device; A fourth step of storing the packet information transmitted and received at the base network device in an AP; A fifth step of determining whether a transmission / reception time of the packet is earlier than a reference time Determining whether the destination MAC address of the packet is a network device; A seventh step of counting packet transmission frequency and reception frequency according to a predetermined rule based on the determined packet transmission / reception time and packet destination MAC address; And an eighth step of deleting the information of the packet at which the transmission / reception time of the packet is earlier than the reference time at the base network device. In the medium access control method of a wireless access network in which a network device and a terminal of a wireless access network transmit a packet by accessing a data transmission medium in a competitive manner, A first step of initializing a packet transmission count, a reception count, and a manager set value S of the base network device; A second step of comparing the packets [number of transmissions / number of receptions] and [set value (S)] and transmitting packets using different medium access waiting times (IFS) according to a predetermined rule; Counting the number of packet transmissions and the number of receptions of the base network device; And a fourth step of determining whether the number of times of packet transmission and number of times of reception of the base network apparatus exceeds a predetermined upper limit set by a radio access network manager. The method according to claim 1, 3, or 6 to 9, And a data transmission method between the base network apparatus and the terminal of the radio access network is a multicast method, a broadcast method, or a unicast method. The method according to claim 1, 3, or 6 to 9, The medium access waiting time (IFS) is a medium access control method of a wireless access network comprising a DIFS (DCF interframe space), SIFS (Short interframe space), PIFS (PCF interframe space) or EIFS (Extended interframe space) . The method according to claim 3, 8 or 9, The manager setting value S is [the amount of reference packet data to be transmitted by the base network device / the amount of reference packet data to be received by the base network device] and is set by the wireless access network system administrator. Media access control method of a wireless access network characterized in that. The method according to claim 6 or 7, The comparison value (M) calculation rule is M <= M- [count of downlink packet counter] / [count of uplink packet counter]. The method according to claim 2, 4, 6 or 8, And the packet information is a destination MAC address of a packet transmitted and received at the base network device and a time point at which the packet is transmitted and received. The method according to claim 6 or 8, The reference time is [current time-W], wherein W is a time value representing a predetermined period of time is a time value changeable by the designer of the radio access network, characterized in that the medium access control method of the radio access network. The method of claim 6 or 8, wherein the number of packet transmission / reception in the seventh step is If the transmission / reception time of the packet is earlier than the reference time and the packet destination MAC address is the base network device, the count of the uplink packet counter in the base network device is decreased by 1, And if the packet transmission / reception time is earlier than the reference time and the packet destination MAC address is not the base network device, the coefficient of the downlink packet counter in the base network device is reduced by one. The method according to claim 6 or 7, The medium access waiting time (IFS) used for the packet transmission is If the comparison value (M) is negative, PIFS does not involve back-off, And if the comparison value (M) is zero or positive, DIFS with back-off. The method according to claim 8 or 9, The medium access waiting time (IFS) used for the packet transmission is compared with the set value S and [downlink packet counter value / uplink packet counter value]. If the S value is larger, PIFS does not involve back-off, If the S value is less than or equal to the medium access control method of a wireless access network, characterized in that the DIFS with a back-off. The method according to claim 1, 3, or 6 to 9,  And the base network device is a base station or an access point. In the medium access control apparatus of a wireless access network in which a network device and a terminal of a wireless access network transmit a packet by accessing a data transmission medium in a competitive manner, Means for initializing a packet transmission count, a reception count and a comparison value M calculated by a predetermined rule from the transmission count and the reception count of the base network apparatus; Means for transmitting a packet using different medium access latency (IFS) according to the comparison value; Means for counting the base network device packet transmission count, the reception count and the comparison value; Means for storing packet information transmitted and received at the base network device to the base network device; Means for determining whether a transmission time of the packet is earlier than a reference time; Means for determining if a destination MAC address of the packet is a base network device; Means for counting packet transmission times and reception times according to a predetermined rule based on the determined packet transmission time and packet destination MAC address; And means for deleting information of the packet in which the packet transmission / reception time is earlier than the reference time from the base network device. In the medium access control apparatus of a wireless access network in which a network device and a terminal of a wireless access network transmit a packet by accessing a data transmission medium in a competitive manner, Means for initializing a packet transmission count, a reception count and a comparison value M calculated by a predetermined rule from the transmission count and the reception count of the base network apparatus; Means for transmitting a packet using different medium access latency (IFS) according to the comparison value; Means for counting the number of packet transmissions, the number of receptions, and the comparison value of the base network device; And means for determining whether the number of times of packet transmission and number of times of reception of said base network apparatus exceeds a predetermined upper limit set by a radio access network manager. In the medium access control apparatus of a wireless access network in which a network device and a terminal of a wireless access network transmit a packet by accessing a data transmission medium in a competitive manner, Means for initializing a packet transmission count, a reception count, and a manager set value S of the base network device; Means for comparing the packet [number of transmissions / number of receptions] and [administrator setting value] to transmit a packet using different medium access waiting time (IFS) according to a predetermined rule; Means for counting packet transmission times and reception times of the base network device; Means for storing packet information transmitted and received at the base network device to an AP; Means for determining whether a transmission / reception time of the packet is earlier than a reference time; Means for determining if a destination MAC address of the packet is a base network device; Means for counting packet transmission times and reception times according to a predetermined rule based on the determined packet transmission time and packet destination MAC address; And means for deleting information of the packet in which the packet transmission / reception time is earlier than the reference time from the base network device. In the medium access control apparatus of a wireless access network in which a network device and a terminal of a wireless access network transmit a packet by accessing a data transmission medium in a competitive manner, Means for initializing a packet transmission count, a reception count, and a manager set value S of the base network device; Means for comparing the packets [number of transmissions / number of receptions] and [set value (S)] and transmitting packets using different medium access waiting times (IFS) according to a predetermined rule; Means for counting packet transmission times and reception times of the base network device; And means for determining whether the number of times of packet transmission and number of times of reception of said base network apparatus exceeds a predetermined upper limit set by a radio access network manager. The method of claim 20, wherein And a means for counting the number of packet transmissions and the number of receptions of the base network apparatus is a packet counter. The method of claim 20, wherein And the base network device comprises a storage device for storing information on packets transmitted and received by the base network device. The method of claim 25, And the information on the packet is a destination MAC address of a packet transmitted and received at the base network device and a time point at which the packet is transmitted and received. The method of claim 20, wherein And the base network device is a base station or an access point.

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