KR100369325B1 - System of mobile-assisted fuzzy-based framed random access control for integration of voice and data over wired/wireless networks and its method - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a fuzzy-based voice / data integrated random access control system using a terminal assistant having a frame structure in a wired / wireless network, and a method thereof and a computer-readable recording medium recording a program for realizing the same.

2. Technical problem to be solved by the invention

The present invention predicts the voice and data traffic loads that dynamically change with time on a reservation-based wired / wireless MAC protocol having a frame structure, and thus the length of the reserved section of the frame, the length of the reserved section for each traffic, and the corresponding reserved section. Fuzzy-based voice based terminal support with frame structure in wired / wireless networks that can satisfy the service quality of voice and data while maximizing the processing efficiency of system by dynamically adjusting access probability of / Integration of data random access control system and its method and a computer-readable recording medium recording a program for realizing the same.

3. Summary of Solution to Invention

The present invention provides a central controller for fuzzy based voice / data integrated random access control having a frame structure, and transmits a random access result to a mini slot of a terminal device and a delay value that is piggybacked upon delivery of an information packet. Interfacing means for transmitting the calculated connection intervals and access allowance values of the voice and data terminals to the terminal apparatus; Random access channel monitoring means for conveying information on the mini slot provided for the voice and data terminals during the frame based on the random access result values for each mini slot transmitted from the interfacing means; Delay monitoring means for transmitting an average delay value of a voice terminal and a data terminal based on the delay values of the terminal devices transmitted from the interfacing means; Uplink scheduling means for delivering an average value of the number of slots requested by the terminal devices on an average of one reservation request and the number of slots not allocated after successful reservation; And dynamically calculating, by fuzzy control, each interval value and an access allowance value to be accessed by voice and data terminals in a frame based on information transmitted from the uplink scheduling means, the delay monitoring means, and the random access channel monitoring means. Random access control means.

4. Important uses of the invention

The present invention is used for controlling voice and data traffic in wired / wireless communication.

Description

System and mobile-assisted fuzzy-based framed random access control for integration of voice and data over wired / wireless networks and its method}

The present invention relates to a fuzzy-based voice / data integrated random access control system and a method using terminal assistance in a wired / wireless network, and more particularly, to a reservation-based wired / wireless medium access having a frame structure. A fuzzy-based integrated voice / data random access control system with a terminal structure having a frame structure in a wired / wireless network for acquiring a collision-free channel connection of voice and data on a control protocol, and a method and a program for realizing the same The present invention relates to a computer-readable recording medium.

In general, a packet radio network is a point-to-multipoint type of multi-access media, and thus requires a wireless access technology for sharing media. In addition, broadband wired subscriber networks such as hybrid fiber coaxial (HFC) networks also require multiple access technologies for uplink transmission in the form of networks.

In recent years, the role of the Medium Access Control (MAC) layer is to support broadband service applications that include traffic that requires real-time fixed bands such as voice and irregularly generated traffic. It became more important. Most MAC protocols for supporting broadband services introduce a reservation process, so that wired / wireless terminals complying with the reservation-based MAC protocol send a resource request message to a central controller to obtain a collision-free connection to a shared medium. send.

Usually, on most systems, these resource request messages are transmitted in competition with other terminals, so the most important factor affecting the quality of service (QoS) regarding delay in the reserved MAC protocol is to allow contention without collision. It can be said to be a random access method of the competition stage that must pass through.

Most reservation protocol systems including the wireless asynchronous transfer mode (hereinafter, abbreviated as "ATM") and broadband wired / wireless subscriber networks do not use a conventional slot-based random access scheme and use a plurality of reserved slots ( In order to improve the efficiency of slot use, the concept of mini slot is introduced) and the reservation of random access and the information transmission procedure using the reserved slot are mixed in a frame structure composed of multiple information slots.

However, the voice / data integrated traffic support through the reservation-based time division multiple access (hereinafter, abbreviated as "TDMA") scheme under the above-described frame structure should not be biased to either traffic. It is required to allocate the maximum number of resources to the data terminals within the range of not exceeding the required quality of service (QoS) (maximum packet loss probability = 0.01), but the terminal and the central controller are distributed to each other, In the generated central controller, the state of the terminal could not be directly known.

In other words, the conventional protocols allow collision between voice and data traffic or prevent the collision by distinguishing the connection area between heterogeneous traffics, but they cannot effectively adapt to dynamically changing traffic by fixing the connection area and other design parameters. In addition, if there is a priority among the traffic, there is a problem that the biased control occurs to the high-priority traffic.

Accordingly, the present invention has been proposed to solve the above-described problems, and the reservation period of the frame by predicting the voice and data traffic load that dynamically changes with time in the reservation-based wired / wireless MAC protocol having a frame structure The length of, the length of the reserved section by traffic, and the probability of access to the reserved section are dynamically adjusted using fuzzy control to maximize the processing efficiency of the system while satisfying the service quality of voice and data. It is an object of the present invention to provide a computer-readable recording medium recording a fuzzy based voice / data integrated random access control system and a method and a program for realizing the same by a terminal assistance having a frame structure over a radio.

1 is a block diagram of an embodiment of a fuzzy based voice / data integrated random access control system using terminal assistance having a frame structure in a wired / wireless network according to the present invention.

FIG. 2 is a detailed block diagram of an embodiment of a fuzzy based random access control module shown in FIG.

3 is a diagram illustrating an embodiment of a reservation-based uplink having a frame structure in a fuzzy based voice / data integrated random access control system according to the present invention;

FIG. 4 is a diagram illustrating a transmission allowance probability readjustment process according to a state transition of a voice terminal in a fuzzy based voice / data integrated random access control system according to the present invention; FIG.

5A and 5B are flowcharts illustrating an embodiment of a fuzzy based voice / data integrated random access control method using terminal assistance having a frame structure in a wired / wireless network according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: central control unit 110: RFI control side module

120: RACH monitoring module 130: delay monitoring module

140: random access control module 160: up scheduler module

The apparatus of the present invention for achieving the above object, in the fuzzy based voice / data integrated random access control system having a frame structure, the connection is allowed by referring to the access permission probability value received from the central controller and its terminal state At least one terminal device for re-adjusting a probability value to transmit a reservation request message to the central controller, and to transmit information to the central controller using the allocated slot reservation information received from the central controller; And based on the reception result of the reservation request message transmitted from the terminal device, predicting a voice and data traffic load that varies dynamically with time to determine the length of the reserved section of the frame, the length of the reserved section for each traffic, and the corresponding reserved section. And a central controller configured to dynamically adjust an access allowance using fuzzy control to transmit allocated slot reservation information to the terminal device.

In addition, another apparatus of the present invention is a terminal device for fuzzy based voice / data integrated random access control having a frame structure, wherein the uplink parameter values broadcasted from the central controller and the mini slots of the corresponding terminal are used. Interfacing means for conveying a random access result and attempting to access a mini slot according to a transmission allowance probability value; Uplink parameter monitoring means for transmitting a transmission allowance probability value of a terminal among uplink parameter values transmitted from the interfacing means; State monitoring means for receiving a random access result for the mini-slot of the terminal from the interfacing means, and for transmitting the connection state of the terminal according to the result; Loss monitoring means for calculating the number of lost reservation packets for the reservation request and delivering a packet loss probability value for a predetermined period; And dynamically calculating a transmission allowance probability value of the terminal based on a packet loss probability value transmitted from the loss monitoring means, a connection state of the terminal transmitted from the state monitoring means, and a transmission allowance probability value of the terminal transmitted from the uplink parameter monitoring means. And admission control means for delivery to the interfacing means.

In addition, another apparatus of the present invention, in the central control unit for the fuzzy-based voice / data integrated random access control having a frame structure, which is piggybacked upon the transfer of the information packet and the random access result to the mini slot of the terminal device Interfacing means for transmitting a delay value and transmitting the calculated connection duration and access permission probability value of the voice and data terminals to the terminal apparatus; Random access channel monitoring means for conveying information on the mini slot provided for the voice and data terminals during the frame based on the random access result values for each mini slot transmitted from the interfacing means; Delay monitoring means for transmitting an average delay value of a voice terminal and a data terminal based on the delay values of the terminal devices transmitted from the interfacing means; Uplink scheduling means for delivering an average value of the number of slots requested by the terminal devices on an average of one reservation request and the number of slots not allocated after successful reservation; And dynamically calculating, by fuzzy control, each interval value and an access allowance value to be accessed by voice and data terminals in a frame based on information transmitted from the uplink scheduling means, the delay monitoring means, and the random access channel monitoring means. And random access control means.

Meanwhile, the method of the present invention is a fuzzy based voice / data integrated random access control method applied to a terminal device for fuzzy-based voice / data integrated random control of a terminal assistant having a frame structure in a wired / wireless network. A first step of the device transmitting a reservation request message to the central control device according to the connection permission probability value notified from the central controller and the readjusted connection permission probability value with reference to the state of the terminal; Based on the reservation request message transmitted from the terminal device, the central controller predicts a voice and data traffic load that varies dynamically with time, so that the length of the reserved section of the frame, the length of the reserved section for each traffic, and the corresponding reserved section are determined. A second step of receiving, by the terminal apparatus, slot reservation information allocated by a random access parameter determined by dynamically adjusting a connection permission probability of the terminal using fuzzy control; And a third step of transmitting, by the terminal device, the information to the central controller using a slot periodically allocated according to whether the reservation is made by referring to the received slot reservation information.

In addition, another method of the present invention, in the fuzzy-based voice / data integrated random access control method applied to the central control unit for the terminal-assisted fuzzy-based voice / data integrated random control having a frame structure in a wired / wireless network, A first step of the central control apparatus receiving a reservation request message according to a connection acceptance probability value readjusted with reference to a connection acceptance probability value and its terminal state from a terminal device; Based on the reservation request message received from the terminal device, the central controller predicts the voice and data traffic load that is dynamically changed with time, and the length of the reserved section of the frame, the length of the reserved section for each traffic, and the corresponding reserved section. A second step of dynamically adjusting the access permission probability of the terminal using fuzzy control to transmit the allocated slot reservation information to the terminal device; And a third step of receiving, by the central processing unit, information transmitted from the terminal device through a slot allocated by the transmitted slot reservation information.

On the other hand, the present invention, in the wired / wireless network for the terminal-assisted fuzzy-based voice / data integration random control having a frame structure, in the terminal device having a processor, the terminal device is notified from the central control device access probability value value A first function of transmitting a reservation request message to the central control unit according to the read permission probability value readjusted with reference to a state of the terminal; Based on the reservation request message transmitted from the terminal device, the central controller predicts a voice and data traffic load that varies dynamically with time, so that the length of the reserved section of the frame, the length of the reserved section for each traffic, and the corresponding reserved section are determined. A second function of receiving, by the terminal device, slot reservation information allocated by a random access parameter determined by dynamically adjusting a connection permission probability of the terminal using fuzzy control; And a program for realizing a third function of transmitting information to the central controller by using the slot periodically allocated according to whether the terminal device has received the reservation information by referring to the received slot reservation information. Provide the medium.

In addition, the present invention, to the fuzzy-based voice / data integration random control of the terminal assistant having a frame structure in the wired / wireless network, to the central control unit having a processor, readjusted by referring to the connection allowed probability value and its terminal state A first function of receiving, by the central controller, a reservation request message according to a connection allowance probability value from a terminal device; Based on the reservation request message received from the terminal device, the central controller predicts the voice and data traffic load that is dynamically changed with time, and the length of the reserved section of the frame, the length of the reserved section for each traffic, and the corresponding reserved section. A second function of dynamically adjusting the access permission probability of the apparatus using fuzzy control to transmit the allocated slot reservation information to the terminal device; And a computer-readable recording medium having recorded thereon a program for realizing a third function of receiving, by the central processing unit, information transmitted from the terminal apparatus through the slot allocated by the transmitted slot reservation information.

The objects, features and advantages described above 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 block diagram of an embodiment of a fuzzy based voice / data integrated random access control system by a terminal assistance having a frame structure in a wired / wireless network according to the present invention.

As shown in FIG. 1, the fuzzy-based voice / data integrated random access control system re-adjusts a connection allowance probability value with reference to a connection allowance probability value notified from the central controller 100 and its own terminal state to control the central control. At least one voice terminal device which transmits a reservation request message to the device 100 and transmits the information to the central controller 100 by using the allocated slot reservation information received from the central controller 100. 200) and a length of a reserved section of a frame and a length of a reserved section of each traffic by estimating a voice and data traffic load that dynamically varies with time based on a reception result of a reservation request message transmitted from the voice terminal apparatus 200. And dynamically adjust the probability of access to the corresponding reservation interval using fuzzy control to store the allocated slot reservation information. And a central control unit 100 for transmitting to the terminal device 200. The

The central control unit 100 of the base station monitors a radio frequency interface (hereinafter referred to as "RFI") control module 110 and a random access channel (hereinafter referred to as "RACH"). Module 120, delay monitor module 130, uplink scheduler module 160 and fuzzy based random access control (hereinafter referred to as "F ² RAC") module having a frame structure The voice terminal device 200 includes an RFI terminal module 210, an uplink parameter monitor module 220, a state monitor module 230, and a loss monitor. monitor module 240 and permission control module 250.

In addition, the central control apparatus 100 and the voice terminal apparatus 200 of the base station are connected to the RFI control side module 110 and the RFI terminal side module 210 by a wireless communication network A to transmit voice and data. Do this.

The RFI control side module 110 is a module responsible for transmitting and receiving signals on an uplink / downlink link. The RFI control side module 110 transmits a random access result value to a RACH supervisory module 120 for a minislot of voice terminal apparatuses. Each of the delayed piggybacked (piggybacked) values is provided to the delay monitoring module (130). The RFI control side module 110 is connected from the F ² RAC module 140, the connection interval (m (k + 1), R (k + 1)) of the voice and data terminals and the connection acceptance probability (P _v (k +) 1), _Pd (k + 1)) is received and broadcasted to the terminal devices, and the slot reservation information is provided to the voice terminal device 200 in a downlink.

The RACH supervisory module 120 is a 'collision', 'success'and' the minislot provided for the voice and data terminal for one frame through the random access results for each minislot provided from the RFI control side module 110 None 'slot number is calculated and provided to the F ² RAC module 140.

The delay monitoring module 130 calculates average delay values D _v (K) and D _d (K) of the voice terminal and the data terminal through delay values of the terminals provided from the RFI control side module 110. Provided to the F ² RAC module 140.

The uplink scheduler module 160 is the number of slots to data terminals average request during a single reservation request (l _e (k)) and success for the reservation average value of not been allocated number of slots (q (k)) Transfer to F ² RAC module 140.

The F ² RAC module 140 is the average value of the number could not be successful, but the allocated slot to the slot number (l _e (k)) and reservation requesting to the average delivered from the uplink scheduler module (160) (q (k)) The average delay value (D _v (K), D _d (K)) of the voice terminal and the data terminal transmitted from the delay monitoring module 130 and the voice and data during one frame provided from the RACH monitoring module 120 Each interval value (m (k + 1), R (k + 1)) to be accessed by the voice and data terminals in one frame with reference to the number of minislots provided for the terminal and the access attempt probability value (P _v (k + 1) ), P _d (k + 1)) is dynamically determined using fuzzy control and provided to the RFI control side module 110.

The RFI terminal side module 210 of the voice terminal device 200 provides up parameter parameters of the uplink broadcasted from the central controller 100 to the up parameter monitoring module 220. The result of the random access to the mini slot (Access Result) is transmitted to the state monitoring module 230, and attempts to access the mini slot according to the transmission probability value P _v transmitted from the admission control module 250 to be described later.

The uplink parameter monitoring module 220 is a transmission allowance probability value of the voice terminal among the uplink parameter values provided from the RFI terminal side module 210 ( ) Is provided to the allowable control module 250.

The state monitoring module 230 receives an access result for the mini slot of the corresponding voice terminal from the RFI terminal side module 210 and accepts the state of the terminal according to the result. 210).

The loss monitoring module 240 calculates the number of packets lost due to the reservation failure and provides the packet loss probability value P _drop for the predetermined period to the admission control module 250.

The admission control module 250 is a transmission allowance probability value of the voice terminal from the upstream parameter monitoring module 220 ( ), Receiving the state (Wait i) of the terminal from the state monitoring module 230 and the packet loss probability value (P _drop ) for a predetermined period from the loss monitoring module 240, respectively, while giving the maximum access opportunity to the data terminal. A transmission allowance probability value P _v that can satisfy a required QoS (Ouality of Service) value of the voice terminal is dynamically calculated and provided to the RFI terminal side module 210.

FIG. 2 is a detailed configuration diagram of an embodiment of the fuzzy based random access control module shown in FIG. 1.

That is, the F ² RAC module 140 is for efficiently controlling random access of voice and data using Pseudo-Bayesian algorithm and fuzzy logic control in a wired / wireless MAC environment having a frame structure. In combination with the readjustment method of the transmission allowance probability of the voice terminal of FIG. 3 to be described later, it becomes a MAF ² RAC.

The data traffic predictor 141 of the F ² RAC module 140 uses the Bayes rule based on the number of mini slots provided during the frame calculated from the RACH monitoring module 120 to access the number of data users. And estimate the number of accesses of the estimated data user to the data permission controller 147 to be described later.

The voice traffic predictor 142 estimates the number of accesses of a voice user based on Bayes' rules based on the number of mini slots provided during the one frame calculated from the RACH monitoring module 120. The number of connections of the user is provided to the voice permission controller 148.

The fuzzy MAC threshold controller 143 includes a reserved lower frame controller 144 and a connection boundary controller 145, wherein the reserved lower frame controller 144 is an average delay value of the data terminal from the delay monitoring module 130. _{(d d} (k)) and uplink scheduler module number average reservation request slot of the data terminal from the _{(160) (l e (k} )) and the average value of the number could not be successful, but the allocated slot to reserved (q (k)), etc. The length of the reserved lower frame, that is, the length of the reserved section (m (k + 1)) is determined, and the length of the reserved section is provided to the connection boundary controller 145 and the fuzzy connection permission controller 146, respectively. .

The access boundary controller 145 is a value N _v (k + 1) estimated from the voice traffic predictor 142, a delay value D _v (k) measured up to the current frame, and a voice terminal transmitted in the current frame. The length of the detailed section for speech in the length of the entire access section determined by the reserved subframe controller 144 by receiving the transmission allowance probability P _v (k) used, that is, the reserved section length of the speech (R (k +). 1)) is determined by fuzzy control, and the determined length (m (k + 1)) of the reserved section and the reserved section length R (k + 1) of the voice are provided to the RFI control side module 110. .

The fuzzy connection permission controller 146 may refer to the number of data user accesses provided from the data traffic predictor 141 and the length of the reserved interval m (k + 1) provided from the reserved lower frame controller 144. The number and reservation of voice users provided from the data admission controller 147 and the voice traffic predictor 142 which determine the connection admission probability P _d (k + 1) of the data and provide it to the RFI control side module 110. The connection allowance probability P _v (k + 1) of the voice is determined by referring to the length (m (k + 1)) of the reserved section provided from the lower frame controller 144 to the RFI control side module 110. Providing a voice admission controller 148.

Here, look at the operation of the F ² RAC module including the above configuration.

The data traffic predictor 141 and the voice traffic predictor 142 use a pseudo-bayesian algorithm under a frame structure according to a transmission result of past frames of terminals for a plurality of access slots. For estimating the number of users to be transmitted to each other, wherein the length of the frame is K in slots, R ^t is the number of access slots in minislots in the current frame, and n ^t _nc is 'none' Given the number of 'and'success' slots and n ^t _c is the number of 'collision' slots in the current frame, the number of users (N ^t ) to attempt transmission in the next frame is the number of users predicted in the previous frame ( N ^t-1 ) and the traffic occurrence rate value are calculated as in Equation 1 below.

here Since the value is also unknown, it should be estimated. It is calculated as follows according to the transmission result for the access slot.

for (i = 1; i R ^t ; i ++)

if ('success')

= 0.995 +0.005

else = 0.995

The above calculation process is applied independently for voice and data traffic.

On the other hand, the fuzzy MAC threshold controller 143 uses fuzzy logic to determine the reserved lower frame length and the number of access slots for voice terminals in order to effectively adapt to fluctuating traffic loads and give higher priority to voice than data. Decide

That is, the length of the reserved subframe is determined by the reserved lower frame controller 144. At this time, a delay value of the data (hereinafter, D _d (k)) as the input variable of the reserved lower frame controller 144, data Selects the average number of reserved slots of the terminal (hereinafter referred to as l _e (k)) and the average number of slots not allocated by the central controller 100 among the slots requested to be reserved from the data terminal (hereinafter referred to as q (k)); do. Here, q (k) is measured at the end of every frame and calculated as the average over the last frame.

And, among the N slots constituting the frame, the number of slots to be allocated for voice terminals that have successfully reserved up to the previous frame ( Slots other than) are divided into slots for reservation access and slots to be allocated to the data terminal. Therefore, the maximum number of slots for reserved connections is The minimum slot number is set to 1 in consideration of the voice terminal.

Here, the following observation is used to set an appropriate value between the minimum value and the maximum value as the number of slots for the reserved connection.

The delay element of data consists of delay element 1 for reservation connection and delay element 2 due to congestion of the packet. If the delay value D _d (k) notified from the terminal in the k-th frame is larger than the reference value, the delay element is delayed. Whether the effect by factor 1 or the delay by factor 2 can be determined through the values of _e (k) and q (k). Table 1 below is a control rule applied to the present invention.

rule D _d (k) l _e (k) q (k) m (k + 1) One LO NL MA m ₁ 2 LO LA MA m ₂ 3 LO NL FE m ₃ 4 SH NL MA m ₄ 5 SH LA MA m ₅ 6 SH LA FE m ₆ 7 LO LA FE m ₇ 8 SH NL FE m ₈

That is, if l _e (k) is large and q (k) is small (Rule 7 in Table 1) is the effect of delay factor 1, on the contrary, if l _e (k) is small and q (k) is large (Table 1). Rule 1) is the effect by delay factor 2. At this time, the number of reserved access slots must be increased to reduce the effects of delay element 1, and the number of information slots for data must be increased to reduce the effects of delay element 2. FIG. If the delay value D _d (k) is greater than the reference value and both l _e (k) and q (k) are large (rule 2 of Table 1), the number of reserved access slots is reduced to reduce the traffic applied to the network. .

If the delay value D _d (k) is smaller than the reference value, if l _e (k) is small and q (k) is also small (rule 8 of Table 1) and l _e (k) is large and q (k If () is small (rule 6 in Table 1), it is necessary to accept all possible reserved connections without conflict and increase the resource utilization of the system. Here, the remaining cases are not frequent and do not affect the output value. The term set of these input variables is defined as follows.

T (D _d (k)) = {Short, Long} = {SH, LO}

T (l _e (k)) = {non-Large, Large} = {NL, LA}

T (q (k)) = {Few, Many} = {FE, MA}

Here, T (Dd (k)) is a delay value notified by the terminal and is defined as short (SH) and long (LO). T (le (k)) is the average number of reservation request slots per terminal, which is defined as Non-large (NL) and Large (LA). Finally, T (q (k)) is a value representing a value that the central controller cannot allocate among the slots requested from the terminal and is defined as Few (FE) and Many (MA). At this time, the numerical value of many and small in the above definition is not accurate, so the corresponding limit value is applied to the system. The value of m (k + 1) is the length of the reserved lower frame for the k + 1th frame.

Here, as the membership function to be used in the fuzzy coder and the fuzzy decoder, an isosceles trapezoid function g (x; a, b, c, d) having an advantage of simplicity of real-time operation is used. The isosceles trapezoid function is defined as

The membership functions of T (D _d (k)), T (l _e (k)) and T (q (k)) are defined as follows.

μ _SH (D _d (k)) = g (D _d (k); SH _a = 0, SH _b = 0, SH _c, SH _d ),

μ _LO (D _d (k)) = g (D _d (k); LO _a , LO _b , LO _c = ∞ _, LO _d = ∞),

μ _NL (l _e (k) = g (l _e (k); NL _a = 0, NL _b = 0, NL _c = l _e, NL _d ).

μ _LA (l _e (k) = g (l _e (k); LA _a = l _e , LA _b , LA _c = l _MAX, LA _d = l _MAX ),

μ _FE (q (k)) = g (q (k); FE _a = 0, FE _b = 0, FE _c, FE _d ),

μ _MA (q (k)) = g (q (k); MA _a , MA _b , MA _c == ∞ _, MA _d = ∞).

Here, the parameters SH _c, SH _d , LO _a , LO _b , NL _d , LA _b, FE _c, FE _d, MA _a and MA _b used in the membership function are arbitrarily selected through experiments. The l l l _e and _MAX of _e (k) represents the maximum number of slots that can be requested at one time and the average length of the data message. Based on the selected input variables and their terminology, the reserved subframe controller has the following eight fuzzy decision rules.

Rule j = IF D _d (k) is X _1j , l _e (k) is X _2j , and q (k) is X _3j, THEN m _j (k + 1)

Here, X _ij is the term of the i (1≤i≤3) th language variable used in the rule j (1≤j≤8), and m _j (k + 1) is for the (k + 1) th frame. Output of rule j. Table 1 summarizes the rule-based fuzzy control rules for controlling the length of the reserved lower frame. In order to determine the reserved lower frame length (m (k + 1)) for the (k + 1) th frame, first, the goodness of fit (w _j ) of the _rule ( _j ) is calculated through the max-min inference method, and the fuzzy decoding is performed. For this purpose, the center of gravity method of Equation 2 is used.

On the other hand, the access boundary controller 145 determines the length of the sub-section for speech using the fuzzy control in the length of the entire access interval determined by the reserved lower frame controller 144, the connection boundary controller 145 Input factors include N _v (k + 1) estimated from the voice traffic predictor 142, delay value D _v (k) measured up to the current frame, and transmission allowance probability P _v (k used by the voice terminals transmitted in the current frame. ) As an input.

In this case, the priority of the determined input variables on the output value is determined by considering the estimated number of terminals as the most important factor in order for the packet of the voice terminal to be transmitted without delay. By assigning, all voice terminals are controlled by the access allowance probability value 1, in order to give higher priority to the voice terminals than the data terminals. When such a scheme is combined with a procedure of re-adjusting the access permission probability in the voice terminal (the effect of lowering the probability of transmitting a terminal), excessive priority can be prevented from being given to the voice terminal.

The second priority for determining the output value is a delay value experienced by voice packets, which increases the number of access slots so that the delay increase factor is interpreted as a failure of the reserved connection and can be reserved sooner. The lowest priority is given to the probability value used for transmission control of the current frame to the reserved access section. This input can affect the estimation of the number of terminals, where a low probability value can be used to estimate the number of terminals low, while a high probability value can be used to estimate the number of terminals. Therefore, it is designed to determine a smaller number of slots when the probability value is high. The term set for input variables used is as follows.

T (N _v (k + 1)) = {Few, Many} = {FE, MA}

T (D _v (k)) = {Short, Long} = {SH, LN}

T (P _v (k)) = {Low, High} = {LO, HI}

Where N _v (k + 1) is the length of the frame estimated from the voice traffic predictor, D _v (k) is the delay measured up to the current frame, and P _v (k) is used by the voice terminals transmitted in the current frame. Transmit tolerance value)

The access boundary controller 145 uses an isosceles trapezoid function as a membership function like the reserved lower frame controller 144. The membership function for each term set is defined as follows.

μ _FE (N _v (k + 1)) = g (N _v (k + 1); FE _a = 0, FE _b = 0, FE _c, FE _d ),

μ _MA (N _v (k + 1)) = g (N _v (k + 1); MA _a , MA _b , MA _c = V _MAX , MA _d = V _MAX ),

μ _SH (D _v (k)) = g (D _v (k); SH _a = 0, SH _b = 0, SH _c, SH _d ).

μ _LN (D _v (k)) = g (D _v (k); LN _a , LN _b , LN _c = ∞ _, LN _d = ∞),

μ _LO (P _v (k)) = g (P _v (k); LO _a = 0, LO _b = 0, LO _c, LO _d ),

μ _HI (P _v (k)) = g (P _v (k); HI _a , HI _b , HI _c = 1 _, HI _d = 1).

Here, the eight fuzzy based decision rules used in the access boundary controller 145 are summarized through Table 2 below, and the inference method and the fuzzy decoding use the same method as the fuzzy subframe controller.

rule N _v (k + 1) D _v (k) P _v (k) R (k + 1) One FE SH HI R ₁ 2 FE SH LO R ₂ 3 FE LN HI R ₃ 4 FE LN LO R ₄ 5 MA SH HI R ₅ 6 MA SH LO R ₆ 7 MA LN HI R ₇ 8 MA LN LO R ₈

Meanwhile, the data permission controller 147 and the voice permission controller 148 adjust the number of terminals that can access the access section for each traffic type determined by the fuzzy MAC threshold controller 143 through fuzzy control. The data permission controller 147 and the voice permission controller 148 are determined by {R (k + 1) / m (k + 1), N _{v (d)} (k + 1), D _{v (d)} (k)}. Therefore, the probability of connection of data and voice is determined.

Here, R (k + 1) / m (k + 1) is an indicator of the size of the access interval for voice traffic in the (k + 1) th frame, and N _{v (d)} (k + 1) and D _{v (d)} (k) is an estimate of voice and data traffic load in the next frame and a delay measurement of voice and data traffic in the current frame. The term set for I (k + 1) = R (k + 1) / m (k + 1) is as follows.

T (I (k + 1)) = {voice Prior, Fair, Data Prior} = {VP, FA, DP}

And the membership function for each is as follows.

μ _VP (I (k + 1)) = g (I (k + 1)); VP _a , VP _b , 1 _, 1),

μ _FA (I (k + 1)) = g (I (k + 1)); FA _a , FA _b , FA _c , FA _d ),

μ _DP (I (k + 1)) = g (I (k + 1)); 0, 0, DP _c, DP _d ).

In addition, the term set of N _v (k + 1) and D _v (k) is defined in a connection boundary controller, and since the voice and data are used in a separate connection area, the probability of transmission of voice and data P _v (k + 1) and P _d (k + 1) are determined independently of each other. The transmission allowance probability determination for these two types of terminals uses 12 fuzzy decision rules of the Sugeno type.

Rule j: IF I (k + 1) is X _1j , N _v (k + 1) is X _2j , and D _v (k) is X _4j, THEN P _vj (k + 1)

Rule j: IF I (k + 1) is X _1j , N _d (k + 1) is X _2j , and D _d (k) is X _4j, THEN P _dj (k + 1)

Here, two aspects can be considered as the selection criteria of P _vj (k + 1) (P _dj (k + 1)) used in the j th rule. And proportional to the transmission delay. Therefore, the controller determines P _vj (k + 1) (P _dj (k + 1)) as a function of the input variable of the controller as shown in Equations 3 and 4 below.

Where Nv (k + 1) is the number of voice terminals predicted by the central controller in frame (k + 1), R (k + 1) is the length of the voice slot in frame K + 1, and Pvj (k +1) is the voice transmission probability value, and alpha and bettor values are determined by simulation.)

Where Nd (k + 1) is the number of data terminals predicted by the central control unit at frame (k + 1), and R (k + 1) is the length of the voice slot at frame K + 1, m (k + 1) is the interval length of the reserved slot, the value of m (k + 1)-R (k + 1) is the slot interval length of the data terminal presented in the fuzzy control, Pdj (k + 1) is the voice transmission probability value)

Α _vj and α _dj and β _vj and β _dj in Equations (3) and (4) are determined through simulation, and the priority of the determined input variables on the output value determination is determined by a fuzzy MAC boundary controller ( Like 143, the highest priority is given to the estimated number of users, and the priority is given in order of delay value and the determined number of access slots.

Therefore, α _vj and α _dj and β _vj and β _dj increase as the rule j increases as shown in Tables 3 and 4 below. Finally, fuzzy decryption uses the center of gravity method. Tables 3 and 4 list fuzzy-based decision rules used to control the probability of transmission of voice and data.

E _v (k + 1) = R (k + 1) / N _v (k + 1) and E _d (k + 1) = (m (k + 1) -R (k + 1)) / R ( k + 1)) / N _d (k + 1).

rule N _v (k + 1) D _v (k + 1) I (k + 1) P _v (k + 1) One MN LG DP α _v1 E _v (k + 1) + β _v1 D _v (k) 2 MN LG FA α _v2 E _v (k + 1) + β _v2 D _v (k) 3 MN LG VP α _v3 E _v (k + 1) + β _v3 D _v (k) 4 MN SM DP α _v4 E _v (k + 1) + β _v4 D _v (k) 5 MN SM FA α _v5 E _v (k + 1) + β _v5 D _v (k) 6 MN SM VP α _v6 E _v (k + 1) + β _v6 D _v (k) 7 FW LG DP α _v7 E _v (k + 1) + β _v7 D _v (k) 8 FW LG FA α _v8 E _v (k + 1) + β _v8 D _v (k) 9 FW LG VP α _v9 E _v (k + 1) + β _v9 D _v (k) 10 FW SM DP α _v10 E _v (k + 1) + β _v10 D _v (k) 11 FW SM FA α _v11 E _v (k + 1) + β _v11 D _v (k) 12 FW SM VP α _v12 E _v (k + 1) + β _v12 D _v (k)

rule N _v (k + 1) D _v (k + 1) I (k + 1) P _v (k + 1) One MN LG VP α _d1 E _d (k + 1) + β _d1 D _d (k) 2 MN LG FA α _d2 E _d (k + 1) + β _d2 D _d (k) 3 MN LG DP α _d3 E _d (k + 1) + β _d3 D _d (k) 4 MN SM VP α _d4 E _d (k + 1) + β _d4 D _d (k) 5 MN SM FA α _d5 E _d (k + 1) + β _d5 D _d (k) 6 MN SM DP α _d6 E _d (k + 1) + β _d6 D _d (k) 7 FW LG VP α _d7 E _d (k + 1) + β _d7 D _d (k) 8 FW LG FA α _d8 E _d (k + 1) + β _d8 D _d (k) 9 FW LG DP α _d9 E _d (k + 1) + β _d9 D _d (k) 10 FW SM VP α _d10 E _d (k + 1) + β _d10 D _d (k) 11 FW SM FA α _d11 E _d (k + 1) + β _d11 D _d (k) 12 FW SM DP α _d12 E _d (k + 1) + β _d12 D _d (k)

3 is a diagram illustrating an embodiment of a reservation-based uplink having a frame structure in a fuzzy based voice / data integrated random access control system according to the present invention.

In other words, in a packet network including a broadband wired / wireless access system and a wireless ATM, a plurality of terminals transmit information using a reservation type TDMA to a central controller.

In general, the communication between the central control unit and the terminal uses two logically separated links. The central control unit uses the downlink to broadcast information traffic and control traffic to the terminals, and the terminal uses the uplink shown in FIG. To communicate the information to the central control unit. As described above, there are two methods for splitting a link in up / down directions: Time Division Duplexing (TDD) and Frequency Division Duplexing (FDD). The present invention is based on frequency division duplexing, but without significant difference. It can also be applied to time division duplication.

The uplink has a frame structure consisting of a plurality of fixed N time slots as shown in FIG. 3, and reserves a reservation subframe (R-subframe) and a reservation made of functionally-based reservation slots. It is divided into a transmission subframe (T-subframe) that can transmit information without contention.

Here, the number of slots forming the reserved subframe (R-subframe) and the transmission subframe (T-subframe) is adaptively changed according to the traffic state applied to the system.

That is, slots forming the reserved subframe are divided into smaller mini-slots and subdivided according to their types upon receiving mixed traffic. In addition, the minislot used to reserve the Tx-slot of the T-subframe consists of a transmission overhead and a Reservation Request (REQ) field. A source identifier (SID), a traffic of class (TOC), a number of slots to request (NSR), and additional information. The voice and data terminal reserves an information slot for packets that arrive before the corresponding access period begins. Such a system is called a gate system.

Under the gate system, a reservation request message is transmitted only once per frame for each terminal. The slot (information slot) of the T-subframe consists of an overhead and a transport packet. The transport packet provides efficient transmission in multiple access intervals and a portion for transmitting higher layer information of the MAC sublayer. The header is newly defined, and the contents inserted into the header are SID, TOC, SEQ, and additional information.

The central controller notifies all terminals of the length (m) of the reserved subframe (R) and the access boundary (R) of voice / data before the start of the uplink frame. It will inform the probability of connection allowance (P _v , P _d ) that can send a reservation request. At this time, m, R, P _v , P _d must be determined to satisfy the required QoS of voice and data traffic while improving system resource efficiency. To this end, if the performance measurement information of the terminal can be loaded in the header of the minislot and the information slot to notify the central controller, random access control can be performed more efficiently. However, since this process is distributed between the queue of the terminal and the central control unit, the terminal directly measures and notifies the central control unit. Since several terminals share media resources, a collision may occur. Therefore, this type of multiple access method cannot guarantee that the information is delivered in a timely manner.

4 is a diagram illustrating a transmission allowance probability readjustment process according to a state transition of a voice terminal in a fuzzy based voice / data integrated random access control system according to the present invention.

That is, as shown in FIG. 4, a voice terminal transmits a packet on a wired / wireless MAC protocol having a frame structure.

The voice terminal operates in three main states. First, the 'idle' state is a state in which there is no packet to be transmitted in the unvoiced interval of the traffic model, and the 'contention' state is the voiced interval of the model. Starting (E1) is a state that attempts to transmit every frame until the reservation is successfully made by transmitting a reservation request message in the reservation period of the next MAC frame from the time when the first generated packet arrives at the terminal.

Here, the number of retransmission attempts is limited by the predefined maximum packet transfer delay value D _v ^max for a specific packet, and the value is denoted by k times. Accordingly, the UEs in the 'competition' state may have a detailed state from the weight 0 to the weight k according to the number of retransmission attempts, and the detailed state transition may be framed due to the gate system characteristics mentioned in FIG. 3. Generated in units, each terminal in the corresponding state is to calculate the final transmission allowance probability by multiplying the transmission allowance value reported from the central controller by the probability value calculated according to the terminal state.

That is, the terminal to transmit the reservation request in the weight i readjusts the transmission allowance probability in consideration of the number of transmission attempts and the packet loss probability measurement value up to that point as shown in Equation 5 below.

(Where, P _v is the probability of transmission of the voice terminal in standby V, P _v ^base is the probability of transmission allowed by the ^base station, P _drop is the probability of packet loss measured by the voice terminal, Is the maximum allowable packet loss probability, a _i , and b are the design parameters to determine.

Meanwhile, in order to control the transmission attempt with the readjusted transmission probability value, the UE generates a random real number between 0 and 1, and attempts to transmit when the value is less than or equal to the transmission tolerance probability value. Suppress the attempt. In this case, when the reservation request fails, it is a case of violating the transmission allowance probability and when two or more terminals acquire and transmit the transmission permission right on the same minislot and cause a collision (E2). Packets that fail to acquire a reservation after k retransmission attempts are dropped (E7), and when a reservation is obtained (E3), the packet is placed in a 'reservation' state and the packet is periodically allocated from the next frame. Will be transmitted (E5).

Here, the period of the information slot allocated to the specific voice terminal by the central controller is the same as the period in which the voice packet is generated, the value is the NP slot period. Where N is the number of slots constituting the frame and P is the number of frames that elapse during the allocation period (E4). The terminal transitioning from the 'reserved' state to the 'idle' state does not transmit a packet to the allocated slot, which causes the central controller to implicitly recognize the state transition of the terminal (E6). On the other hand, if there is a packet in the queue of the terminal after the packet loss occurs, the transition to the contention state according to the time when the packet occurs (E8), if the packet does not exist is transitioned to the idle state (E9).

5A and 5B are flowcharts illustrating an embodiment of a fuzzy based voice / data integrated random access control method using terminal assistance having a frame structure in a wired / wireless network according to the present invention.

As shown in Figure 5a, the operation sequence of the terminal and the base station according to the random access protocol for integrating voice and data traffic by the central control module, first, the terminal is 'pause', 'competition' and 'reserved' state Checks their connection state and detects the first packet occurrence in idle state (501,502)

At this time, if no packet is generated, the terminal continuously maintains the idle state. When the first packet is generated, the terminal transitions to a contention state, and the detailed state is weight 0.

Meanwhile, the UEs in the hard state receive upstream parameter values broadcast from the base station (503). Then, the access interval and the transmission allowance probability value of the terminal are checked through the received upstream parameter values. In this case, the voice terminal calculates the packet loss rate P _drop up to the corresponding time point as a ratio of the measured packet loss number and the packet generation number (505). At this time, the measured packet loss rate (P _drop ) is the maximum allowable value ( (506).

As a result of the comparison of the process 506, the measured packet loss rate P _drop is the maximum allowable value ( Less than), the probability of transmission allowance (P _v ^base ) and the packet loss rate ratio (P _drop ) / ( )) Is determined as the terminal's transmission allowable probability value (P ^VT _i ) of the terminal (507), and the value does not exceed 1, and then a real number between 0 and 1 is obtained from the randomizer. The process proceeds to random generation (509).

As a result of the comparison of the process 506, the measured packet loss rate P _drop is the maximum allowable value ( Packet loss ratio ratio ((P _drop ) / ( The value of the standardization factor for 0.5) is set to 0.5 to determine the transmission allowance probability value (P ^VT _i ) of the terminal (508), and randomly generates a real number between 0 and 1 from the randomizer (509).

Here, the reason for setting the standardization factor value to 0.5 is to calculate the standardization factor by setting i = k in order to maximize the influence of the packet loss rate ratio on the determination of the transmission probability probability (P ^VT _i ) of the terminal. .

On the other hand, the terminal having determined the transmission probability probability value randomly generates a real number between 0 and 1 from the randomizer, and compares the output value RN of the randomizer and the transmission tolerance probability value (P ^VT _i ) (510).

As a result of the determination in step 510, if the output value RN is less than or equal to the transmission allowance probability value P ^VT _i , the terminal randomly selects one of the mini slots in the access section and transmits a reservation request message (522). If the output value RN is larger than the transmission allowance probability value P ^VT _i , it is determined whether the packet in the queue of the terminal is deleted in the state in which transmission is suppressed (511).

In this case, if the terminal state is less than the maximum transmission suppression number k, as a result of the determination in step 511, the terminal returns to the contention state 503 and transitions to the next state without deleting the packet, otherwise the packet is deleted ( 512). After the packet is deleted, it is determined whether another packet exists in the queue of the terminal (513). If there is another packet in the queue of the terminal, the terminal is in a contention state 503 in a Wait i-1 -1 state. ), Otherwise it transitions to dormant state 501.

In this case, i is a value indicating the generation period of the voice packet in frame period units. In case of the data terminal, the transmission allowance probability notified by the base station is used as it is, and the packet is not deleted.

Meanwhile, a procedure of determining random access parameters using a pseudo-bayesian algorithm and fuzzy control based on the reception result of the reservation request message transmitted from the terminals in a competitive manner is as follows.

As shown in FIG. 5B, the uplink information packet and the reservation request packet are received from the terminal devices, respectively (514 and 515). At this time, the pseudo-bayesian algorithm considering the frame structure is predicted according to the access result of the reservation request message transmitted on the random access interval of voice and data, and predicts the number of attempted reservation request terminals. 516).

Then, input the performance parameters of the data traffic (delay, the average number of reserved request slots, the queue length of the central controller) and the parameters of the voice traffic (the number of predicted voice terminals, the delay of the voice terminals, the connection allowance probability) Using fuzzy control as a variable, the length of the reserved subframe and the voice / data connection boundary point are selected (517 and 518), respectively.

In this case, in order to limit the number of terminals attempting to transmit on the access section selected in step 518, the central controller permits access of each type of terminal by using the length of the access section, the estimated number of terminals, and delay information. Probability, that is, random access parameter using fuzzy control is determined (519).

The central controller that determines the random access parameters allocates slots to the terminals that have succeeded in the reservation request (520). Finally, the central controller assigns slots to the terminals that successfully make the reservation request. Coded to broadcast downward (521).

Meanwhile, when the central controller notifies the uplink parameter information through the downlink as described above, the terminals that have transmitted the reservation request message determine whether the transmission is successful (523).

At this time, as a result of the determination in step 523, when the reserved terminals successfully transmit the packet, information transmission is performed by using slots periodically allocated to the mobile station (524). If not, it transitions to the 'rest' state.

The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention described above is not limited to the stated embodiments and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

The present invention as described above, by using the MAF ² RAC can effectively ensure the quality of service of voice and data while preventing collision between voice and data traffic. Unlike conventional PRMA / IPRMA techniques or using fixed design parameters, it is possible to maximize the processing efficiency of the system while preventing degradation of voice quality due to data traffic.

Claims (18)

A fuzzy based voice / data integrated random access control system having a frame structure, Re-adjust the connection allowance value by referring to the access allowance value notified from the central control device and its terminal state, and transmit a reservation request message to the central control device, and use the allocated slot reservation information received from the central control device. At least one terminal device for transmitting information to the central controller; And Based on the reception result of the reservation request message transmitted from the terminal device, the voice and data traffic load dynamically vary with time, and the length of the reserved section of the frame, the length of the reserved section for each traffic, and access to the reserved section The central control apparatus for dynamically adjusting the allowable probability using fuzzy control to transmit the allocated slot reservation information to the terminal device. Fuzzy based voice / data integrated random access control system with a terminal assistance having a frame structure in a wired / wireless network including a. The method of claim 1, The terminal device, An RFI terminal module for transmitting the parameter values of the uplink broadcasted from the central controller and the random access result for the mini slot of the corresponding terminal, and attempting to access the mini slot according to a transmission allowance probability value; An up parameter monitoring module for transmitting a transmission allowance probability value of a terminal among uplink parameter values transmitted from the RFI terminal module; A state monitoring module for receiving a random access result for a mini slot of a corresponding terminal from the RFI terminal side module and transmitting a connection state of the terminal according to the result; A loss monitoring module for calculating a loss number of failed reservation packets for the reservation request and delivering a packet loss probability value for a predetermined period; And The RFI is calculated by dynamically calculating a transmission loss probability value of the terminal based on a packet loss probability value transmitted from the loss monitoring module, a connection state of the terminal transmitted from the state monitoring module, and a transmission permission probability value of the terminal transmitted from the uplink parameter monitoring module. Permissive control module for transmitting to the terminal module Fuzzy-based voice / data integration random access control system with terminal assistance having a frame structure in a wired / wireless network including a. The method according to claim 1 or 2, The central control unit, RFI control side for transmitting the random access result to the mini-slot of the terminal device and the delay value that is piggybacked when the information packet is delivered, and transmits the calculated connection interval and access allowance value to the terminal device module; A random access channel monitoring module for transmitting information on a mini slot provided for voice and data terminals during a frame based on random access result values for each mini slot transmitted from the RFI control side module; A delay monitoring module for transmitting an average delay value of a voice terminal and a data terminal based on the delay values of the terminal devices transmitted from the RFI control side module; An uptime scheduler module for delivering the average value of the number of slots requested by the terminal devices on an average of one reservation request and the number of slots that have not been allocated after successful reservation; And Arbitrary for dynamically calculating the interval value and the connection allowance value to be accessed by the voice and data terminals in the frame based on the information transmitted from the uplink scheduler module, the delay monitoring module and the random access channel monitoring module using fuzzy control. Connection control module Fuzzy-based voice / data integration random access control system with terminal assistance having a frame structure in a wired / wireless network including a. The method of claim 3, wherein The random access control module, A data traffic predictor for estimating the number of data users to attempt to transmit to access slots of a current frame according to a transmission result of past frames of terminals for a plurality of access slots using a Pseudo-Bayesian algorithm; A voice traffic predictor for estimating the number of voice users to attempt to transmit to access slots of a current frame according to a transmission result of past frames of terminals for a plurality of access slots using a Pseudo-Bayesian algorithm; A fuzzy MAC threshold controller for determining, by fuzzy control, the reserved lower frame length and the number of access slots of voice terminals to adapt to varying traffic loads; And Fuzzy connection allowance controller for controlling the number of each terminal that can be connected to the access section for each track type determined by the fuzzy MAC threshold controller by fuzzy control Fuzzy based voice / data integrated random access control system with a terminal assistance having a frame structure in a wired / wireless network including a. The method of claim 4, wherein The fuzzy MAC threshold controller, The average delay value D _d (K) of the data terminals from the delay monitoring module, the average number of reserved request slots l _e (k) of the data terminals from the uplink scheduler module, and the number of slots that have been successfully reserved but not allocated. A reserved lower frame controller for receiving a mean value q (k) to determine a length m (k + 1) of the reserved lower frame; And A value N _v (k + 1) estimated from the voice traffic predictor, a delay value D _v (k) measured up to the current frame, and a transmission allowance probability P _v (k used by the voice terminals transmitted in the current frame Access boundary controller for determining the reserved interval length R (k + 1) of the voice from the reserved lower frame length m (k + 1) determined by the reserved lower frame controller by fuzzy control by receiving Fuzzy based voice / data integrated random access control system with a terminal assistance having a frame structure in a wired / wireless network including a. The method of claim 4, wherein The fuzzy connection permission controller, A connection allowance probability of data P _d by referring to information including the number of data user accesses provided from the data traffic predictor and the length (m (k + 1)) of the reserved subframes provided from the reserved subframe controller. a data admission controller for determining k + 1)); And The voice may access the voice user provided by the traffic predictor and the length of the reserved sub-frame provided by the reserved sub-frame, the controller (m (k + 1)) reference information including to the voice connection permission probability (P _v ( Voice admission controller for determining k + 1)) Fuzzy based voice / data integrated random access control system with a terminal assistance having a frame structure in a wired / wireless network including a. A terminal device for fuzzy based voice / data integrated random access control having a frame structure, Interfacing means for transmitting the uplink parameter values broadcast from the central controller and the random access result for the mini-slot of the terminal, and attempting to access the mini-slot according to the transmission allowance probability value; Uplink parameter monitoring means for transmitting a transmission allowance probability value of a terminal among uplink parameter values transmitted from the interfacing means; State monitoring means for receiving a random access result for the mini-slot of the terminal from the interfacing means, and for transmitting the connection state of the terminal according to the result; Loss monitoring means for calculating the number of lost reservation packets for the reservation request and delivering a packet loss probability value for a predetermined period of time; And The interfacing is performed by dynamically calculating the transmission allowance probability value of the terminal based on the packet loss probability value transmitted from the loss monitoring means, the connection state of the terminal transmitted from the state monitoring means, and the transmission allowance probability value of the terminal transmitted from the uplink parameter monitoring means. Admission control means for delivery by means Terminal device for fuzzy based voice / data integration random access control by the terminal assistance having a frame structure in a wired / wireless network comprising a. A central controller for fuzzy based voice / data integrated random access control having a frame structure, Interfacing means for transmitting a random access result to a mini slot of a terminal device and a delay value piggybacked upon delivery of an information packet, and for transmitting the calculated connection interval and access allowance value of the voice and data terminals to the terminal device; Random access channel monitoring means for conveying information on the mini slot provided for the voice and data terminals during the frame based on the random access result values for each mini slot transmitted from the interfacing means; Delay monitoring means for transmitting an average delay value of a voice terminal and a data terminal based on the delay values of the terminal devices transmitted from the interfacing means; Uplink scheduling means for delivering an average value of the number of slots requested by the terminal devices on an average of one reservation request and the number of slots not allocated after successful reservation; And Arbitrary for dynamically calculating, by fuzzy control, each interval value and an access allowance value to be accessed by voice and data terminals in a frame based on information transmitted from the uplink scheduling means, the delay monitoring means and the random access channel monitoring means. Connection control means Central control apparatus for fuzzy based voice / data integrated random access control by the terminal assistant having a frame structure in a wired / wireless network comprising a. The method of claim 8, The random access control means, Data traffic prediction means for estimating the number of data users to attempt transmission in the access slots of the current frame according to a transmission result of the past frames of the terminals for the plurality of access slots using a Pseudo-Bayesian algorithm; Voice traffic predicting means for estimating the number of voice users to attempt to transmit to access slots of a current frame according to a transmission result of past frames of terminals for a plurality of access slots using a Pseudo-Bayesian algorithm; Fuzzy MAC boundary value control means for determining, by fuzzy control, the reserved lower frame length and the number of access slots of voice terminals to adapt to varying traffic loads; And Fuzzy connection allowance control means for adjusting the number of terminals which can be connected to each track type connection section determined by the fuzzy MAC boundary value control means by fuzzy control. Central control apparatus for fuzzy based voice / data integrated random access control by the terminal assistant having a frame structure in a wired / wireless network comprising a. The method of claim 9, The fuzzy MAC boundary value control means, The average delay value D _d (K) of the data terminal from the delay monitoring means, the average number of reserved request slots l _e (k) of the data terminals from the uplink scheduling means, and the number of slots that have been successfully reserved but not allocated. Reserved subframe control means for receiving a mean value q (k) to determine the length m (k + 1) of the reserved subframe; And The value N _v (k + 1) estimated from the voice traffic predicting means, the delay value D _v (k) measured up to the current frame, and the transmission allowance probability P _v (used by the voice terminals transmitted in the current frame; k)) A connection for determining the reserved interval length R (k + 1) of the voice from the reserved lower frame length m (k + 1) determined by the reserved lower frame control means by fuzzy control. Boundary control means Central control apparatus for fuzzy based voice / data integrated random access control by the terminal assistant having a frame structure in a wired / wireless network comprising a. The method of claim 9, The purge connection permission control means, A connection allowance probability (P) of the data with reference to information including the number of data user accesses provided from the data traffic predicting means and the length (m (k + 1)) of the reserved subframe provided from the reserved lower frame control means. data admission control means for determining _d (k + 1)); And Possibilities for access to speech (P) with reference to information including the number of connections of the voice user provided from the voice traffic predicting means and the length (m (k + 1)) of the reserved subframe provided from the reserved subframe control means voice admission control means for determining _v (k + 1)) Central control apparatus for fuzzy based voice / data integrated random access control by the terminal assistant having a frame structure in a wired / wireless network comprising a. The method of claim 10 or 11, The reserved lower frame control means, Fuzzy-based voice / data integration random access by terminal assistance having a frame structure in a wired / wireless network, characterized in that the length (m (k + 1)) of the reserved subframe is determined by the following Equation Central control for control. Where m _j (k + 1) is the output of rule j for the (k + 1) th frame and w _j is the goodness of fit of rule j through the max-min inference method. A fuzzy based voice / data integrated random access control method applied to a terminal device for fuzzy based voice / data integrated random control of a terminal assistant having a frame structure in a wired / wireless network, A first step of the terminal device transmitting a reservation request message to the central control device according to the connection allowance probability value notified from the central control device and the read permission probability value readjusted by referring to the state of the terminal; Based on the reservation request message transmitted from the terminal device, the central controller predicts a voice and data traffic load that varies dynamically with time, so that the length of the reserved section of the frame, the length of the reserved section for each traffic, and the corresponding reserved section are determined. A second step of receiving, by the terminal apparatus, slot reservation information allocated by a random access parameter determined by dynamically adjusting a connection permission probability of the terminal using fuzzy control; And A third step of transmitting, by the terminal apparatus, the information to the central control apparatus using a slot periodically allocated according to whether the reservation is made by referring to the received slot reservation information; Fuzzy-based voice / data integration random access control method by terminal assistance having a frame structure in a wired / wireless network including a. The method of claim 13, The first step is, When the terminal device checks its access state and the access state is a contention state, the terminal device receives upstream parameter values broadcast from the central controller, and receives the access interval and transmission allowance value of the terminal through the received upstream parameter values. A fourth step of identifying; A fifth step of calculating the transmission acceptance probability value and recalculating the transmission acceptance probability of the terminal device based on a current race condition and a transmission acceptance probability value notified from the central controller according to a result of comparing the value with the maximum allowable value; ; A sixth step of comparing and determining an output value of a randomizer randomly selected by the terminal device and a recalculated transmission permission probability value; As a result of the determination in step 6, when the randomizer output value is small, one of the mini slots in the access section is randomly selected to transmit a reservation request message. When the randomizer output value is large, the transmission of the reservation request message is suppressed and A seventh step of comparing and determining a state and a maximum number of transmission inhibitions; And As a result of the determination of the seventh step, when the state of the terminal device is less than the maximum number of transmission suppression, the transition to the next state without deleting the packet; if greater than the maximum number of transmission inhibition, the eighth step of deleting the corresponding packet and then transitioning to the next state Fuzzy-based voice / data integration random access control method by terminal assistance having a frame structure in a wired / wireless network including a. A fuzzy based voice / data integrated random access control method applied to a central controller for fuzzy based voice / data integrated random control of a terminal assistant having a frame structure in a wired / wireless network, A first step of the central control apparatus receiving a reservation request message according to a connection acceptance probability value readjusted with reference to a connection acceptance probability value and its terminal state from a terminal device; Based on the reservation request message received from the terminal device, the central controller predicts the voice and data traffic load that is dynamically changed with time, and the length of the reserved section of the frame, the length of the reserved section for each traffic, and the corresponding reserved section. A second step of dynamically adjusting the access permission probability of the terminal using fuzzy control to transmit the allocated slot reservation information to the terminal device; And A third step of receiving, by the central processing unit, information transmitted from the terminal apparatus through a slot allocated by the transmitted slot reservation information; Fuzzy-based voice / data integration random access control method by terminal assistance having a frame structure in a wired / wireless network including a. The method of claim 15, The second step, A fourth step of estimating the number of attempted reservation request terminals using a pseudo-bayesian algorithm considering a frame structure according to a connection result of a reservation request message transmitted on a separate random access section of voice and data; ; A fifth step of selecting a length of a reserved subframe and a voice / data connection boundary point by using fuzzy control using performance determination parameters of data traffic and parameters of voice traffic as input variables, respectively; And A sixth step of limiting the number of terminal devices attempting to transmit on the selected access section by determining the access allowance probability of each type of terminal using the length of the access section, the estimated number of terminals and delay information; Fuzzy-based voice / data integration random access control method by terminal assistance having a frame structure in a wired / wireless network including a. In the terminal device having a processor for the control of the fuzzy-based voice / data integration of the terminal assistance having a frame structure in the wired / wireless network, A first function of transmitting, by the terminal device, a reservation request message to the central control device according to the connection permission probability value notified from the central control device and the connection permission probability value readjusted with reference to the state of the terminal; Based on the reservation request message transmitted from the terminal device, the central controller predicts a voice and data traffic load that varies dynamically with time, so that the length of the reserved section of the frame, the length of the reserved section for each traffic, and the corresponding reserved section are determined. A second function of receiving, by the terminal device, slot reservation information allocated by a random access parameter determined by dynamically adjusting a connection permission probability of the terminal using fuzzy control; And A third function of transmitting information to the central control unit by using the slot periodically allocated according to whether the terminal device reserves the terminal by referring to the received slot reservation information; A computer-readable recording medium having recorded thereon a program for realizing this. In the central control unit having a processor for fuzzy-based voice / data integration random control of a terminal assistant in a wired / wireless network, A first function of receiving, from the terminal apparatus, a reservation request message according to a connection acceptance probability value readjusted with reference to an access acceptance probability value and its terminal state from the terminal apparatus; Based on the reservation request message received from the terminal device, the central controller predicts the voice and data traffic load that is dynamically changed with time, and the length of the reserved section of the frame, the length of the reserved section for each traffic, and the corresponding reserved section. A second function of dynamically adjusting the access permission probability of the apparatus using fuzzy control to transmit the allocated slot reservation information to the terminal device; And A third function of receiving, by the central processing unit, information transmitted from the terminal device through a slot allocated by the transmitted slot reservation information A computer-readable recording medium having recorded thereon a program for realizing this.