KR20100004279A - Apparatus and method for transmitting and receiving map message size information in a broadband wireless communication system - Google Patents

Abstract

PURPOSE: An apparatus and a method for transmitting and receiving map message size information in a broadband wireless communication system are provided to instruct a variation value in an average map message area size to a terminal, thereby generating size information of a resource area that a map message occupies as minimum additional control information. CONSTITUTION: A scheduler assigns a map message and data to a resource area. A control information generator(520) generates size information of a map message transmission area in a frame. The control information generator transmits the size information of the map message transmission area to terminals at a transmission period longer than a transmission period of the map message. The size information of the map message transmission area is one of maximum size information or average size information.

Description

Apparatus and method for transmitting and receiving map message size information in a broadband wireless communication system {APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING MAP MESSAGE SIZE INFORMATION IN A BROADBAND WIRELESS COMMUNICATION SYSTEM}

The present invention relates to a broadband wireless communication system, and more particularly, to an apparatus and method for transmitting and receiving information for indicating the size of a resource area occupied by a map message in a broadband wireless communication system.

The 4th Generation (hereinafter referred to as '4G') communication system provides users with services of various quality of service (QoS) using a transmission rate of about 100 Mbps. There is active research going on. Particularly, in 4G communication systems, studies are being actively conducted to support high-speed services in a form of guaranteeing mobility and QoS in a broadband wireless access (BWA) communication system such as a wireless local area network system and a wireless urban area network system. Is going on. The representative communication system is the Institute of Electrical and Electronics Engineers (IEEE) 802.16 system. The IEEE 802.16 system orthogonal frequency division multiplexing (hereinafter referred to as 'OFDM') / Orthogonal Frequency Division Multiple Access (orthogonal frequency division multiplexing) to support a broadband transmission network on a physical channel (Physical Channel) Multiple Access, hereinafter referred to as " OFDMA "

In a broadband wireless communication system such as the IEEE 802.16 system, resources are allocated to terminals in units of blocks occupying a certain section of the frequency axis and a certain section of the time axis. Accordingly, the base station transmits information about resource allocation to the terminal, and the terminal identifies the location of the resource block allocated to the terminal through the information about the resource allocation. In this case, the information about the resource allocation is called a MAP message. In general, the map message includes resource allocation information in a certain resource region and is transmitted periodically.

In order to decode the map message, the UE needs to know the size of the entire subchannel area (Logical Resource Unit) occupied by the map message. If the size of the entire map message is not known, the map message cannot be decoded because the data area cannot be distinguished from the map message area. Therefore, the data area of the specific user indicated by the resource assignment block in the map message is known. You can't. Therefore, the base station should inform all the terminals of the resource area size occupied by the actual map message.

In order to inform UEs of the size of the map message that changes dynamically according to the transmission period, additional control information must be transmitted before the map message. Since the reception of the map message is determined according to whether the additional control information has been successfully received, the additional control information should be transmitted to have a very high reliability. As a result, the additional control information has to be transmitted using a considerable amount of resources compared to the amount of information to be transmitted, which increases the overhead of the system.

Therefore, a method for reducing system overhead due to the additional control information is needed.

Accordingly, an object of the present invention is to provide an apparatus and method for transmitting and receiving map message size information in a broadband wireless communication system.

Another object of the present invention is to provide an apparatus and method for minimizing overhead of additional control information transmitted to indicate the size of a resource area occupied by a map message in a broadband wireless communication system.

It is still another object of the present invention to provide a UE with size information of a maximum map message area in a transmission period longer than a map message transmission period in a broadband wireless communication system, and the terminal maps the size information using the size information of the maximum map message area. An apparatus and method for decoding a message are provided.

It is still another object of the present invention to provide a terminal with information about the size of an average map message area in a transmission period longer than a map message transmission period in a broadband wireless communication system, and to determine a change value in the average map message area size in a map message transmission period. The present invention provides an apparatus and method for instructing a terminal to decode a map message by using the size information of the average map message region and a change amount value.

It is still another object of the present invention that a base station has the same mapping rule between a map message area and a specific data area in a broadband wireless communication system, so that the base station only has the size information of the maximum map message area, or the size information and change amount of the average map message area. The present invention provides an apparatus and method for acquiring a map message through decoding, even if the terminal is instructed.

According to an exemplary embodiment of the present invention, a method for operating a base station in a broadband wireless communication system includes: allocating a map message and data to a resource region having the same permutation rule and being divided into frequency domains, and a frame; Generating the size information of the map message transmission region and transmitting the size information of the map message transmission region to the terminals in a transmission period longer than that of the map message.

According to an embodiment of the present invention, a method for operating a terminal in a broadband wireless communication system includes: receiving, from a base station, size information of a map message transmission area in a frame at a transmission period longer than that of a map message; Performing resource demapping on resource regions having the same permutation rule and being divided into frequency domains, and obtaining map messages by decoding a map message transmission region size in the resource domains; It is done.

According to an embodiment of the present invention, in the broadband wireless communication system, a base station apparatus includes a scheduler for allocating a map message and data to a resource region having the same permutation rule and divided into frequency domains, and within a frame. And a control information generator for generating the size information of the map message transmission area and transmitting the size information of the map message transmission area to the terminals in a transmission period longer than that of the map message.

According to an embodiment of the present invention to achieve the above object, a terminal device in a broadband wireless communication system, and a control information receiving unit for receiving the size information of the map message transmission area in the frame in a transmission period longer than the transmission period of the map message from the base station; A resource demapping for performing resource demapping on resource regions having the same permutation rule and divided into frequency domains, and a decoder for decoding a map message transmission region in the resource region to obtain a map message. Characterized in that.

According to the present invention, in a broadband wireless communication system, a base station instructs a user equipment of the maximum map message area size information in a transmission period longer than a map message transmission period, or transmits the average map message area size information to a user equipment in a transmission period longer than the map message transmission period. And instructing the UE of the amount of change in the average map message area size in a map message transmission period, so that the size information of the resource area occupied by the map message is generated as the minimum additional control information and transmitted in a long transmission period. There is an advantage that can reduce the overhead caused (overhead).

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Hereinafter, the present invention will be described a method for minimizing the overhead of additional control information for indicating the size of the map message in a broadband wireless communication system.

The present invention will be described using a broadband wireless access communication system using an Orthogonal Frequency Division Multiplexing (OFDM) scheme or an Orthogonal Frequency Division Multiple Access (OFDMA) scheme as an example. It can be easily applied to other communication systems that need to generate and transmit resource region size information.

1 is a diagram illustrating a frame structure of a broadband wireless communication system considered in the present invention.

Referring to FIG. 1, the frame structure considered in the present invention is a hierarchical structure of a super-frame 100, a frame 110, and a sub-frame 120. It has a structure. The super frame 100 of 20 msec period each consists of four frames 110 of 5 msec period, each frame 110 is composed of eight sub-frames 120, each sub-frame 120 It is composed of a plurality of OFDMA symbols 140. In every super frame 100, a super-frame header 130 is transmitted using the first subframe 120 of the super frame 100, and the system is synchronized with the super frame header 130. Preamble and Broadcast Channel (BCH) information are included. The map message is included in the downlink subframe 120 and may be transmitted in one or more subframe periods.

FIG. 2 is a diagram illustrating a frame structure including information indicating a map message size in the frame structure illustrated in FIG. 1.

As shown, in the frame structure composed of a plurality of subframes in one frame, the MAP Message Size Indication Field 200 indicating the size of the map message every subframe increases system overhead. It becomes a factor. If the terminal does not properly recognize the size of the map message using the map message size indication field 200, since the map message area 210 and the data area 220 cannot be distinguished, the message included in the map message is included. Data resource location information of a specific user is unknown, which greatly affects system performance. In order to prevent such problems, the information for indicating the size of the map message should be transmitted very robust using a lot of power or resources compared to the amount of information to be transmitted, which also increases the overhead of the system.

Therefore, there is a need for a method that can inform the size of the allocated map message through additional control information with minimal overhead. In this way, the system overhead increase can be minimized, and the terminal can accurately acquire data resource location information of the specific terminal included in the map message.

Meanwhile, a method of transmitting a map message, which is a downlink control signal, is distinguished according to a multiplexing method of data and map messages and an encoding method applied to a map message for each user. The multiplexing scheme includes a time division multiplexing (TDM) scheme and a frequency division multiplexing (FDM) scheme according to time or frequency division, and the coding scheme includes a separation coding scheme or a joint according to whether to apply coding for each user. There is a coding scheme. When transmitting a map message by encoding by user, that is, by separating encoding, it is possible to use different transmission power for each user to transmit a reliable map message. When the map message is transmitted using the separation encoding scheme, the size of the corresponding map message may increase because the map message includes a connection ID (CID) and a cyclic redundancy checking (CRC). However, by applying scrambling, masking, or interleaving to each user without including a different CID in the map message, many problems of increasing the size of the map message can be solved. However, this method cannot receive map messages of other users.

3 is a diagram illustrating a frame structure including information indicating a map message size according to a first embodiment of the present invention.

Here, the present invention considers a case where the map message and data are multiplexed by the FDM scheme and the map message is transmitted by the separated encoding scheme. Since each user uses different unique code, that is, CID, to use scrambling, masking, or interleaving, each user can receive only the resource allocation block allocated to the user. Therefore, every user must decode and CRC check the map message using a unique specific code assigned to him, and check whether there is a resource allocation block allocated to him. Therefore, it is possible to determine which resource area to perform such an operation only when the size information of the map message is known.

Referring to FIG. 3, in order to inform the size of the area occupied by the map message in the corresponding subframe, instead of the map message size indication field 200 of FIG. The size of the map message area (Max. MAP Size) 310 is transmitted. The size 310 of the maximum map message area is transmitted using a control channel (eg, a broadcast channel) having a transmission period longer than that of the map message. As a result, the overhead of information indicating the map message size can be minimized and transmission efficiency can be increased. Here, since the maximum map message area may not be the actual area occupied by the map message in the corresponding subframe, the terminal cannot actually distinguish the map message area 300 and the data area 320 accurately. In this case, the existing method cannot decode the map message. In order to solve the above problem, in the present invention, a mapping (permutation or hopping) rule of the map message area 300 and a specific data area (DATA Zone-1) 320 is the same, so that a terminal sends a map message to the maximum map. Allows decoding by the size 310 of the message area. However, it is necessary to assume that the size of the area where the map message area 300 and the specific data area (DATA Zone-1) 320 are combined, that is, the area having the same mapping rule, is previously known to all terminals through different control channels. . In FIG. 3, the data region 320 is divided into several regions to indicate a band AMC region, a diversity region, and a frequency frequency reuse (FFR) region.

4 is a diagram illustrating a frame structure including information indicating a map message size according to a second embodiment of the present invention. In FIG. 4, as in FIG. 3, a map message and data are multiplexed by the FDM scheme, and a case in which the map message is transmitted by a separate encoding scheme is considered.

Referring to FIG. 4, in order to inform the size of the area occupied by the map message in the corresponding subframe, the average map message area size 410 of the map message area 400 is transmitted. The size 410 of the average map message area is transmitted using a control channel (eg, a broadcast channel) having a longer transmission period than the map message. This can minimize the overhead of information indicating the map message size.

In addition, when the map message is transmitted, a change amount value that is a difference value between the size of the average map message area 410 and the size of the mapped message area (Indicated MAP Size) in the map message size indication field 200 as shown in FIG. 2. (Δ) 420 and 430 are transmitted together. Here, the size of the map message region finally indicated by using the change amount values 420 and 430 may be different from the actual MAP size of the actually allocated map message area, which is the change amount values 420 and 430. Is determined according to the number of bits indicating. If the number of bits is small enough to convey an accurate value, the change amount value 420 is a rough difference between the size of the average map message area 410 and the size of the actually indicated map message area (Indicated MAP Size). Can be. On the other hand, if the number of bits is large enough to deliver an accurate value, the change amount value 430 may accurately transmit the difference between the size of the map message area 400 and the size of the average map message area 410 actually allocated. . In other words, if the overhead of the change amount values 420 and 430 is increased, the actually allocated map message area and the indicated map message area may be the same, or they may be different. However, even when a difference occurs, the mapping rule of the map message area 400 and the specific data area (DATA Zone-1) 440 may be the same to enable decoding at the terminal. The transmission of the change amount value 430 is a method of minimizing overhead when the mapping rule of the map message area 400 and the specific data area (DATA Zone-1) 440 cannot be the same. On the other hand, the transmission of the change amount value 420 is a method of minimizing overhead when the mapping rule of the map message area 400 and the specific data area (DATA Zone-1) 440 can be the same.

Since the method uses the average map message area size 410 and the change amount values 420 and 430, the size of the actual map message area and the size of the indicated map message area are as large as possible, and thus the decoding of the terminal. Reduce complexity

Comparing the method of FIG. 4 with the conventional method as shown in FIG. 2, the conventional method requires an overhead as much as the maximum value of the size of the map message region can be preset and indicated. The method of FIG. 4 requires only the overhead of setting the average map message area size and indicating the size change amount value of the corresponding map message based on the traffic loading situation and the like.

5 is a block diagram illustrating a device configuration of a base station in a broadband wireless communication system according to an exemplary embodiment of the present invention.

As shown, the base station includes a map message generator 500, a map message encoder 502, a map message modulator 504, a data generator 510, a data encoder 512, a data modulator 514, and a control information generator ( 520, a control information encoder 522, a control information modulator 524, a resource mapper 530, an OFDM modulator 540, and an RF (Radio Frequency) transmitter 550.

Referring to FIG. 5, the map message generator 500 generates a map message including resource allocation information according to resource allocation (scheduling) of a scheduler (not shown).

The data generator 510 generates data to be transmitted in a corresponding frame according to the scheduling.

The control information generator 520 generates information indicating the size of an area occupied by the map message in a subframe in which the map message in the frame is transmitted. In this case, the information indicating the size of the area occupied by the map message in the subframe may be the maximum size of the map message area that the map message area may have according to the first embodiment of FIG. 3. Can be Here, the size of the maximum map message area has a longer transmission period than the map message, and is transmitted through a control channel having a long transmission period such as a broadcast channel. The information indicating the size of the area occupied by the map message in the subframe may be the average map message area of the map message area according to the second embodiment of FIG. 4. . Here, the average map message area also has a longer transmission period than the map message, and is transmitted through a control channel with a long transmission period such as a broadcast channel. Here, in the second embodiment of FIG. 4, as the information indicating the size of the area occupied by the map message in the subframe, the size of the average map message area and the size of the actually indicated map message area (Indicated MAP Size) The change amount value Δ, which is a difference value of, is further added. The change amount value is transmitted through the map message size indication field 200 as shown in FIG. 2 and has the same transmission period as the map message.

The map message encoder 502, the data encoder 512, and the control information encoder 522 encode information bit streams provided from the map message generator 500, the data generator 510, and the control information generator 520, respectively. do.

The map message modulator 504, the data modulator 514, and the control information modulator 524 respectively encode encoded bit streams provided from the map message encoder 502, the data encoder 512, and the control information encoder 522. Modulate to generate complex symbols.

The resource mapper 530 maps the complex symbols provided from the map message encoder 502, the data encoder 512, and the control information encoder 522 to a frequency domain. During the mapping process, the mapping rules of the map message area and the specific data area (DATA Zone-1) are applied in the same manner so that the map message area and the maximum map message area (first embodiment) or the indicated map message area are actually allocated. Even if there is a difference (second embodiment), the UE can decode the map message.

The OFDM modulator 540 converts signals in the frequency domain provided from the resource mapper 530 into signals in the time domain through an inverse fast fourier transform (IFFT) operation, and then inserts a cyclic prefix (CP). Construct a symbol.

The RF transmitter 550 converts the baseband signal provided from the OFDM modulator 540 into an RF band signal and then transmits the signal through an antenna.

6 is a block diagram illustrating an apparatus configuration of a terminal in a broadband wireless communication system according to an exemplary embodiment of the present invention.

As shown, the terminal includes an RF receiver 600, an OFDM demodulator 602, a resource demapper 604, a demodulator 606, and a decoder 608.

Referring to FIG. 6, the RF receiver 600 converts an RF band signal received through an antenna into a baseband signal.

The OFDM demodulator 602 divides the baseband signal provided from the RF receiver 600 in OFDM symbol units, removes a cyclic prefix (CP), and then processes signals in a frequency domain through a fast fourier transform (FFT) operation. Restore

The resource demapper 604 extracts complex symbols through demapping in the frequency domain provided from the OFDM demodulator 602. In this case, when the demapping rules of the map message area and the specific data area DATA Zone-1 are equally applied during the demapping process, the actual map message area and the maximum map message area (first embodiment) or instruction are applied. Even if the mapped map message area (second embodiment) differs, the map message can be decoded.

The demodulator 606 demodulates the signal provided from the resource demapper 604 and converts it into an information bit string.

The decoder 608 uses the information indicating the size of an area occupied by a map message in a subframe for transmitting a map message in a frame, which is received from a base station through a control information receiver (not shown). Decrypts the bit string provided by < RTI ID = 0.0 > In this case, the information indicating the size of the area occupied by the map message in the subframe may include a maximum map message area (Max. MAP Size) that the map message area may have according to the first embodiment of FIG. 3. Can be. Here, the size of the maximum map message area has a longer transmission period than the map message, and is transmitted through a control channel having a long transmission period such as a broadcast channel. Further, the information indicating the size of the area occupied by the map message in the subframe may be the average map message area size of the map message area according to the second embodiment of FIG. 4. have. Here, the average map message area also has a longer transmission period than the map message, and is transmitted through a control channel with a long transmission period such as a broadcast channel. Here, in the second embodiment of FIG. 4, as the information indicating the size of the area occupied by the map message in the subframe, the size of the average map message area and the size of the actually indicated map message area (Indicated MAP Size) The change amount value Δ, which is a difference value of, is further added. The change amount value is transmitted through the map message size indication field 200 as shown in FIG. 2 and has the same transmission period as the map message.

7 is a flowchart illustrating an operation of a base station for generating and transmitting map message size indication information in a broadband wireless communication system according to an exemplary embodiment of the present invention.

Referring to FIG. 7, in step 701, the base station determines a resource region that has the same mapping rule and is divided into a frequency region, that is, the map message region 300 and the specific data region (DATA Zone-1) 320 or the above-mentioned. Map messages and data are allocated to the map message area 400 and the specific data area (DATA Zone-1) 440 of FIG. 4.

In step 703, the base station generates information indicating a size of an area occupied by a map message in a subframe in which the map message is transmitted in a frame. In this case, the information indicating the size of the area occupied by the map message in the subframe may include a maximum map message area (Max. MAP Size) that the map message area may have according to the first embodiment of FIG. 3. Can be. Here, the maximum map message area has a transmission period longer than that of the map message, and is transmitted through a control channel with a long transmission period such as a broadcast channel. The information indicating the size of the area occupied by the map message in the subframe may be the average map message area of the map message area according to the second embodiment of FIG. 4. . Here, the average map message area also has a longer transmission period than the map message, and is transmitted through a control channel with a long transmission period such as a broadcast channel. Here, in the second embodiment of FIG. 4, as the information indicating the size of the area occupied by the map message in the subframe, the size of the average map message area and the size of the actually indicated map message area (Indicated MAP Size) The change amount value Δ, which is a difference value of, is further added. The change amount value is transmitted through the map message size indication field 200 as shown in FIG. 2 and has the same transmission period as the map message.

Thereafter, the base station transmits the generated map message region size information in a corresponding period. That is, the size of the maximum map message area according to the first embodiment of FIG. 3 and the size of the average map message area according to the second embodiment of FIG. 4 are transmitted in a transmission period longer than that of the map message. The change amount value according to the second embodiment is transmitted in the same transmission period as the map message.

The base station then terminates the algorithm according to the invention.

8 is a flowchart illustrating an operation of a terminal for receiving a map message using map message size indication information in a broadband wireless communication system according to an exemplary embodiment of the present invention.

Referring to FIG. 8, in step 801, the terminal receives information indicating a size of an area occupied by a map message in a subframe in which the map message is transmitted in a frame at a period longer than a map message transmission period from the base station. In this case, the information indicating the size of the area occupied by the map message in the subframe may include a maximum map message area (Max. MAP Size) that the map message area may have according to the first embodiment of FIG. 3. Can be. Here, the maximum map message area has a transmission period longer than that of the map message, and is received through a control channel with a long transmission period such as a broadcast channel. The information indicating the size of the area occupied by the map message in the subframe may be the average map message area of the map message area according to the second embodiment of FIG. 4. . Here, the average map message area also has a longer transmission period than the map message, and is received through a control channel with a long transmission period such as a broadcast channel. Here, in the second embodiment of FIG. 4, as the information indicating the size of the area occupied by the map message in the subframe, the size of the average map message area and the size of the actually indicated map message area (Indicated MAP Size) The change amount value Δ, which is a difference value of, is further added. The change amount value is received through the map message size indication field 200 as shown in FIG. 2 and has the same transmission period as the map message.

In step 803, the terminal has the same mapping rule and is divided into a frequency domain, that is, a map message region 300 and a specific data zone (DATA Zone-1) 320 of FIG. 3 or the map of FIG. 4. Resource demapping is performed on the message area 400 and the specific data area (DATA Zone-1) 440.

Thereafter, the terminal decodes the map message region size in the resource region using the received map message region size information in step 805 and restores the map message in step 807. Here, in the case of the first embodiment of FIG. 3, the map message region size for performing the decoding is the size of the maximum map message region, and in the case of the second embodiment of FIG. 4, the map message for performing the decoding. The area size is the size of the map message area indicated by the size of the average map message area and the change amount value. Here, the map message area includes a plurality of resource allocation blocks, and the terminal performs decoding on the number of resource allocation blocks included in the resource allocation block according to the size of the resource allocation block to the own. It is possible to check whether the allocated resource allocation block exists, and if there is a resource allocation block allocated thereto, the corresponding map message can be obtained.

Thereafter, the terminal terminates the algorithm according to the present invention.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

1 is a view showing a frame structure of a broadband wireless communication system considered in the present invention,

FIG. 2 illustrates a frame structure including information indicating a map message size in the frame structure shown in FIG. 1;

3 is a diagram illustrating a frame structure including information indicating a map message size according to a first embodiment of the present invention;

4 is a diagram illustrating a frame structure including information indicating a map message size according to a second embodiment of the present invention;

5 is a block diagram showing a device configuration of a base station in a broadband wireless communication system according to an embodiment of the present invention;

6 is a block diagram showing the device configuration of a terminal in a broadband wireless communication system according to an embodiment of the present invention;

7 is a flowchart illustrating an operation of a base station for generating and transmitting map message size indication information in a broadband wireless communication system according to an embodiment of the present invention;

8 is a flowchart illustrating an operation of a terminal for receiving a map message using map message size indication information in a broadband wireless communication system according to an exemplary embodiment of the present invention.

Claims (16)

A method of operating a base station in a broadband wireless communication system, Allocating map messages and data to resource domains having the same permutation rules and being divided into frequency domains; Generating size information of a map message transmission area in a frame; And transmitting the size information of the map message transmission area to the terminals in a transmission period longer than that of the map message. The method of claim 1, The size information of the map message transmission region may be one of the maximum size information that the map message transmission region may have, and average map size information of the map message transmission region. The method of claim 1, When the size information of the map message transmission region is average map size information of the map message transmission region, And transmitting a change amount value of average map size information of the map message transmission area to the terminals in a map message transmission period together with the map message. A method of operating a terminal in a broadband wireless communication system, Receiving size information of a map message transmission area in a frame at a transmission period longer than that of the map message, from a base station; Performing resource demapping on resource regions having the same permutation rule and being divided into frequency domains; And decoding a map message transmission area size in the resource area to obtain a map message. The method of claim 4, wherein The size information of the map message transmission region may be one of the maximum size information that the map message transmission region may have, and average map size information of the map message transmission region. The method of claim 4, wherein When the size information of the map message transmission region is average map size information of the map message transmission region, And receiving, from the base station, a change amount value of average map size information of the map message transmission area in a map message transmission period together with the map message. The method of claim 6, And the size of the map message transmission region for performing the decoding is equal to the size of the change amount value plus the average size of the map message transmission region. The method of claim 4, wherein And the size of the map message transmission region for performing the decoding is the same as the maximum size of the map message transmission region. A base station apparatus in a broadband wireless communication system, A scheduler for allocating map messages and data to resource regions having the same permutation rules and being divided into frequency domains; And a control information generator for generating the size information of the map message transmission area in the frame and transmitting the size information of the map message transmission area to the terminals in a transmission period longer than that of the map message. The method of claim 9, And the size information of the map message transmission area is one of max. Map size information of the map message transmission area and average map size information of the map message transmission area. The method of claim 9, When the size information of the map message transmission area is average size (Average MAP Size) information of the map message transmission area, the control information generator, And transmitting a change amount value of average MAP size information of the map message transmission area to the terminals in a transmission period of a map message. A terminal device in a broadband wireless communication system, A control information receiver for receiving the size information of the map message transmission area in the frame at a transmission period longer than that of the map message from the base station; A resource demapper for performing resource demapping on resource regions having the same mapping rule and being divided into frequency domains; And a decoder configured to obtain a map message by decoding the size of the map message transmission region in the resource region. The method of claim 12, And the size information of the map message transmission area is one of max. Map size information of the map message transmission area and average map size information of the map message transmission area. The method of claim 12, When the size information of the map message transmission area is average size (Average MAP Size) information of the map message transmission area, the control information receiving unit And receiving, from the base station, a change amount value of average map size information of the map message transmission region in a map message transmission period. The method of claim 14, And a map message transmission area size for performing the decoding is equal to the sum of the change amount values and the average size of the map message transmission area. The method of claim 12, And a map message transmission area size for performing the decoding is equal to a maximum size of the map message transmission area.

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