KR100941052B1 - Apparatus and method for decreasing of the volume of channel allocation information massage in wideband wireless communication system - Google Patents

Abstract

The present invention relates to a broadband wireless communication system, wherein a base station includes a scheduler for determining whether to generate uplink control region allocation information and a generator for generating uplink control region allocation information according to the scheduler. By periodically transmitting the resource allocation information message of the region, the size of the resource allocation information message can be reduced to increase the transmission rate of user data.

Orthogonal Frequency Division Multiplexing (OFDM), MAP overhead, uplink control region, uplink channel descriptor (UCD)

Description

Apparatus and method for reducing the amount of resource allocation information message in a broadband wireless communication system {APPARATUS AND METHOD FOR DECREASING OF THE VOLUME OF CHANNEL ALLOCATION INFORMATION MASSAGE IN WIDEBAND WIRELESS COMMUNICATION SYSTEM}

1 is a diagram illustrating a frame structure of an orthogonal frequency division access communication system according to the prior art;

2 is a block diagram of a transmitter in a broadband wireless communication system according to the present invention;

3 is a block diagram of a receiver in a broadband wireless communication system according to the present invention;

4 is a diagram illustrating a procedure for generating a resource allocation information message in a base station of a broadband wireless communication system according to a first embodiment of the present invention;

5 is a diagram illustrating a procedure for checking a resource allocation information message in a terminal of a broadband wireless communication system according to a first embodiment of the present invention;

6 is a diagram illustrating a procedure for generating a resource allocation information message in a base station of a broadband wireless communication system according to a second embodiment of the present invention;

7 is a diagram illustrating a procedure for checking a resource allocation information message in a terminal of a broadband wireless communication system according to a second embodiment of the present invention; and

8 is a diagram illustrating a procedure for checking a resource allocation information message in a terminal of a broadband wireless communication system according to a third embodiment of the present invention.

The present invention relates to a broadband wireless communication system, and more particularly, to an apparatus and method for reducing the amount of resource allocation information message in a broadband wireless communication system.

In the 4th Generation (hereinafter referred to as '4G') communication system, active research to provide users with various Quality of Service (Qos) service using transmission speed of about 100Mbps Is going on. In particular, in the current 4G communication system, broadband wireless access such as a wireless local area network (LAN) system and a wireless urban area network (MAN) system Access: Research is being actively conducted to support high-speed services in the form of guaranteeing mobility and quality of service in a BWA communication system, and the representative communication system is IEEE (Institute of Electrical and Electronics Engineers) 802.16 communication system. to be.

The standards represented by the wireless communication standards among the working group of the 802.16 standard are 802.16d and 802.16e, and the two standards are single carrier and orthogonal frequency division multiplexing (OFDM). Orthogonal Frequency Division Multiple Access (hereinafter referred to as OFDMA) standard. Here, the OFDMA standard of 802.16d / e is used for resource allocation in a frame considering downlink and uplink frame structure and frequency of various radio channels in order to effectively transmit digital bit information to be transmitted to a receiver. Is defined.

1 illustrates a frame structure of an OFDMA communication system according to the prior art.

As shown in FIG. 1, a frame used in the OFDMA standard is divided into an uplink 110 frame and a downlink 120 frame.

The downlink frame 110 includes a preamble 111, a frame control header (FCH) 113, a downlink map (Downlink-MAP, hereinafter referred to as DL-MAP) 115, and an uplink map (Uplink). -MAP, hereinafter referred to as UL-MAP) 117, and downlink data burst (Burst) 119.

The preamble 111 is an area for information used for initial synchronization acquisition and cell search of the UE, and the FCH 113 uses a coding method of the DL-MAP 115 and the UL-MAP 117. It is an area to indicate. In addition, the DL-MAP 115 is an area indicating a resource allocation information message for each terminal of the downlink burst 119, the UL-MAP 117 is the control information 121 and the This is an area indicating a resource allocation information message for each terminal of the uplink data burst 123. The downlink burst 119 is an area for transmitting user data from the base station to the terminal.

The uplink frame 120 includes a control information area 121 and an uplink data burst 123.

The control information area 121 is an area for transmitting the control information necessary for communication from the terminal to the base station to the base station, and the uplink data burst 123 is an area for transmitting user data from the terminal to the base station.

Here, the control information area 121 includes a ranging channel 151, a channel quality information (CQI) channel 153, an acknowledgment (ACK) channel 155, and a sounding channel 157.

The Ranging channel 151 is an area where the terminal can transmit data to the base station without allocating the resource from the base station. The Ranging channel 151 is used for initial network access, handoff, or resource allocation. . The CQI channel 153 is an area used by the terminal to inform the base station of the downlink channel status. In addition, the ACK channel 155 is an area used by the terminal to inform the base station whether the downlink data burst has been successfully received, and the sounding channel 157 is an area for the base station to obtain channel information of the terminal. to be.

In the OFDMA system using the above-described frame structure, the MAP information and the data burst compete with resource occupancy due to the structure in which the MAP area and the user data burst indicating the resource allocation information message are configured in the same frame. In other words, the greater the amount of MAP information, the less resources to allocate to the user burst. In addition, the frame structure is dynamically changeable, but the frame structure rarely changes in actual system use. In particular, in the case of the control information 121 of the uplink frame 120, a characteristic that each frame maintains the same structure is strongly shown. Accordingly, the resource allocation information message having the same content is transmitted every frame, thereby reducing the resource to be allocated to the data burst, thereby lowering the transmission rate of the entire system.

It is therefore an object of the present invention to provide an apparatus and method for reducing the overhead of resource allocation information message in a broadband wireless communication system.

Another object of the present invention is to provide an apparatus and method for increasing a transmission rate of user data by periodically transmitting a resource allocation information message of a specific area in a broadband wireless communication system.

According to a first aspect of the present invention for achieving the above object, a base station apparatus in a broadband wireless communication system, a scheduler for determining whether to generate uplink control region allocation information, and uplink control region allocation according to the scheduler And a generator for generating information.

According to a second aspect of the present invention for achieving the above object, in a broadband wireless communication system, a terminal device includes a receiving unit for receiving a resource allocation message and, when uplink control region allocation information is not included in the resource allocation message, If the uplink control region allocation information is stored, and the uplink control region allocation information is included in the resource allocation message, the uplink control included in the stored uplink control region allocation information is included in the received resource allocation message. And a decryption unit for updating the area allocation information.

According to a third aspect of the present invention for achieving the above object, an operation method of a base station in a broadband wireless communication system includes a process of determining whether to generate uplink control region allocation information and uplink according to a result of determining whether to generate uplink control region; And generating the control region allocation information.

According to a fourth aspect of the present invention for achieving the above object, a method of operating a terminal in a broadband wireless communication system, when a resource allocation message is received, determines whether uplink control region allocation information is included in the resource allocation message. Maintaining the uplink control region allocation information, if the uplink control region allocation information is not included; and storing the uplink control region previously stored, if the uplink control region allocation information is included. And updating the allocation information with uplink control region allocation information included in the received resource allocation message.
According to a fifth aspect of the present invention for achieving the above object, a method of operating a base station in a broadband wireless communication system includes generating a broadcast message including uplink control region allocation information, and generating the broadcast message. It characterized in that it comprises a process of broadcasting (Broadcasting) so as not to be continuous in the frame.
According to a sixth aspect of the present invention for achieving the above object, a method of operating a terminal in a broadband wireless communication system includes the steps of: receiving a broadcast message that is broadcast so as not to be continuous in every frame; And obtaining the link control region allocation information.
According to a seventh aspect of the present invention for achieving the above object, in a base station apparatus in a broadband wireless communication system, a generator for generating a broadcast message including uplink control region allocation information, and the broadcast so as not to be continuous in every frame It characterized in that it comprises a transmitter for broadcasting a message.
According to an eighth aspect of the present invention for achieving the above object, in a broadband wireless communication system, a terminal apparatus includes a receiver for receiving a broadcast message broadcast so as not to be continuous in every frame, and the uplink control by decoding the broadcast message. And a decoder for acquiring the area allocation information.
According to a ninth aspect of the present invention for achieving the above object, an operation method of a base station in a broadband wireless communication system includes a broadcast message including uplink control region allocation information and transmission period information of the uplink control region allocation information. And generating a broadcast message and broadcasting the broadcast message to terminals.
According to a tenth aspect of the present invention for achieving the above object, a method of operating a terminal in a broadband wireless communication system, a broadcast message including uplink control region allocation information and transmission period information of the uplink control region allocation information; And receiving the uplink control region allocation information by decoding the broadcast message.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing 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, an apparatus and method for increasing transmission rate of a system by reducing overhead of resource allocation information message in a broadband wireless communication system will be described. In the following description, the broadband wireless communication system will be described using an orthogonal frequency division multiple access (OFDMA) system as an example.

2 is a block diagram of a base station transmitter in an OFDMA system according to the present invention.

As shown in FIG. 2, the transmitter includes a scheduler 201, a MAP generator 203, a channel encoder 205, a modulator 207, a resource mapper 209, an OFDM modulator 211, and a DAC (Digital). to Analog Converter (213) and an RF (Radio Frequency) transmitter 215.

The scheduler 201 generates resource allocation schedule information of a data burst region in downlink, a data burst region in uplink (hereinafter referred to as UL), and control regions. Here, the control regions are meant to include a ranging channel, a channel quality information (CQI) channel, an acknowledgment (ACK) channel, and a sounding channel. The CQI channel has the same meaning as a fast feedback channel. In particular, it is determined whether to generate UL control region allocation information according to the present invention and provided to the MAP generator. Here, the object of determining whether to generate the UL control region allocation information may be all of the UL control regions or some of the UL control regions. The scheduler 201 controls the UL control region allocation information to be generated when a period for generating the UL control region allocation information or the UL control region allocation information is changed. In this case, when the UL control region allocation information is changed, the UL control region allocation information is generated every time in a predetermined number of consecutive frames.

The MAP generator 203 receives resource allocation schedule information from the scheduler 201 and generates a MAP message. In particular, according to the present invention, the MAP generator 203 generates the MAP message according to whether the UL control region allocation information provided from the scheduler 201 is generated. That is, when generating the UL control region allocation information, the MAP generator 230 generates a MAP message including the UL control region allocation information. On the other hand, when the UL control region allocation information is not generated, the MAP generator 230 generates a MAP message not including the UL control region allocation information. In addition, when the UL control region allocation information is included, the MAP generator 230 generates valid period information of the UL control region allocation information and includes it in the MAP message.

The channel encoder 205 encodes the resource allocation information message provided from the MAP generator 203 at a corresponding coding rate. The modulator 207 modulates the coded data provided from the channel encoder 205 into symbols according to a corresponding modulation scheme (eg, QPSK (Qudrature Phase Shift Keying)).

The resource mapper 209 maps the symbols provided from the modulator 207 according to the frame structure. That is, the symbols are mapped to subcarriers used in the frame. The OFDM modulator 211 converts the symbols mapped to the frequency domain received from the resource mapper 209 into an inverse fast fourier transform (IFFT) operation and converts the symbols into time domain signals.

The DAC 213 converts the generated time domain signal provided from the OFDM modulator 211 into an analog signal. The RF transmitter 215 converts a signal provided from the DAC 213 into a carrier frequency and transmits it through an antenna.

3 is a block diagram of a terminal receiver in a broadband wireless communication system according to the present invention.

Referring to FIG. 3, the receiver includes an RF receiver 301, an analog to digital converter (ADC) 303, an OFDM demodulator 305, a MAP extractor 307, a demodulator 309, and a channel decoder 311. And a MAP decoder 313.

The RF receiver 301 converts an RF signal received through an antenna into a baseband signal. The ADC 303 converts the baseband signal provided from the RF receiver 301 into a digital signal.

The OFDM demodulator 305 converts a time domain signal provided from the ADC 303 into a frequency domain signal by performing a fast fourier transform (FFT) operation. The MAP extractor 307 classifies and extracts a MAP signal from the signal provided from the OFDM demodulator 305.

The demodulator 309 demodulates the MAP signal provided from the MAP extractor 305 into data according to a corresponding demodulation scheme. The channel decoder 311 decodes MAP data provided from the demodulator 309 at a corresponding coding rate.

The MAP decoder 313 interprets MAP information provided from the channel encoder 311 and updates resource information that can be used by the terminal. In particular, according to the present invention, the MAP decoder 313 checks whether the UL control region allocation information is included in the MAP information, and updates the stored control region allocation information according to the checked result. That is, if the UL control region allocation information is included in the MAP information, the MAP decoder 313 modifies the existing UL control region allocation information into new UL control region allocation information. On the other hand, if the UL control region allocation information is not included in the MAP information, the previously stored UL control region allocation information is maintained. In addition, when the valid period information is included in the MAP message, the MAP decoder 313 discards the stored UL control region allocation information when new UL control region allocation information is not received even when the valid period expires. Here, the UL control region is meant to include a ranging channel, a CQI channel, an ACK channel, and a sounding channel. The CQI channel has the same meaning as a fast feedback channel.

In addition, although not shown, the control signal transmitter performs UL signaling (eg, Ranging, CQI, ACK, etc.) to the base station by using the received UL control region allocation information.

4 illustrates a procedure for generating a resource allocation information message in a base station of a broadband wireless communication system according to a first embodiment of the present invention.

Referring to FIG. 4, first, the MAP generator 203 determines whether it is time to generate a MAP in step 401.

If it is time to generate the MAP, the MAP generator 203 checks uplink and downlink resource allocation schedule in step 403.

In step 405, the MAP generator 203 compares the UL control region allocation information of the checked resource allocation schedule with the recently transmitted UL control region allocation information to check whether the MAP generator 203 has changed. Herein, the UL control region means a ranging channel, a CQI channel, an ACK channel, and a sounding channel. The CQI channel has the same meaning as a fast feedback channel.

If the UL control region allocation information is changed, the MAP generator 203 proceeds to step 407 to set the number of elapsed frames m after the UL control region allocation information is changed to zero.

After setting the value of m to 0, the MAP generator 203 proceeds to step 409 to generate a MAP message including the changed UL control region allocation information. Here, the object of determining whether to generate the UL control region allocation information may be all of the UL control regions or some of the UL control regions.

In step 405, if the UL control region allocation information has not been changed, the MAP generator 203 proceeds to step 411 and checks whether the period for generating the UL control region allocation information has been reached. In other words, the number of times the MAP not including the UL control region allocation information is continuously transmitted after the MAP transmission including the UL control region allocation information is checked to determine whether the number corresponds to a predetermined period. Here, the period is a variable that is determined according to the setting of the system.

If the generation period of the UL control region allocation information, the MAP generator 203 proceeds to step 409 and generates a MAP message including the UL control region allocation information identified in step 403.

On the other hand, if it is not the generation period of the UL control region allocation information, the MAP generator 203 increases the value of m by one.

After increasing the value of m by 1, if it is not the generation period of the UL control region allocation information, the MAP generator 203 proceeds to step 415 to compare the value of m and the value of N. Here, N is a variable for ensuring the reception of the changed UL control region allocation information of the terminal, and is the number of frames in which the UL control region allocation information is continuously transmitted. That is, the changed UL control region allocation information is continuously transmitted N times through consecutive frames from the changed time point. Here, N is a variable that is determined according to the setting of the system.

If the value of m is smaller than the value of N, the MAP generator 203 proceeds to step 409 and generates a MAP message including the UL control region allocation information identified in step 403.

On the other hand, if the value of m is greater than or equal to the value of N, the MAP generator 203 proceeds to step 417 to generate a MAP message that does not include the UL control region allocation information.

The MAP generator 203 then terminates this procedure.

5 illustrates a procedure for confirming a resource allocation information message in a terminal of a broadband wireless communication system according to the first embodiment of the present invention.

Referring to FIG. 5, first, the MAP decoder 313 checks whether MAP is received in step 501.

When the MAP is received, the MAP decoder 313 proceeds to step 503 and checks whether UL control region allocation information exists in the received MAP. Here, the UL control region is meant to include a ranging channel, a CQI channel, an ACK channel, and a sounding channel. The CQI channel has the same meaning as the fast feedback channel.

If the UL control region allocation information exists in the received MAP, the MAP decoder 313 proceeds to step 505 and modifies the previously stored UL control region allocation information to the received UL control region allocation information.

On the other hand, if the UL control region allocation information does not exist in the received MAP, the MAP decoder 313 proceeds to step 507 and maintains the previously stored UL control region allocation information.

Thereafter, the MAP decoder 313 proceeds to step 509 to confirm the data burst region information, and then ends the present procedure.

6 illustrates a procedure for generating a resource allocation information message in a base station of a broadband wireless communication system according to a second embodiment of the present invention.

Referring to FIG. 6, first, the MAP generator 203 determines whether it is time to generate a MAP in step 601.

If it is time to generate the MAP, the MAP generator 203 checks uplink and downlink resource allocation schedule in step 603.

In step 605, the MAP generator 203 compares the UL control region allocation information of the checked resource allocation schedule with the recently transmitted UL control region allocation information and checks whether the MAP generator 203 has changed. Here, the UL control region is meant to include a ranging channel, a CQI channel, an ACK channel, and a sounding channel. The CQI channel has the same meaning as the fast feedback channel.

If the UL control region allocation information is changed, the MAP generator 203 proceeds to step 607 to generate information on the validity period of the UL control region allocation information. That is, when the UL control region allocation information is periodically transmitted, the UL control region allocation information once transmitted becomes unreliable information after one period. Accordingly, the MAP generator 203 generates the valid period information to inform the terminal of the period.

In step 609, the MAP generator 203 generates a MAP message including the changed UL control region allocation information and the valid period information. Here, the object of determining whether to generate the UL control region allocation information may be all of the UL control regions or some of the UL control regions.

On the other hand, if the UL control region allocation information has not been changed in step 605, the MAP generator 203 proceeds to step 611 and checks whether a period for generating the UL control region allocation information is reached. In other words, it is checked how many times the MAP not including the UL control region allocation information has been transmitted since the MAP transmission including the UL control region allocation information, and confirms that the number of transmissions corresponds to the period. Here, the period is a variable that is determined according to the setting of the system.

If it is not the generation period of the UL control region allocation information, the MAP generator 203 proceeds to step 613 to generate a MAP message not including the UL control region allocation information.

7 illustrates a procedure for confirming a resource allocation information message in a terminal of a broadband wireless communication system according to a second embodiment of the present invention.

Referring to FIG. 7, the MAP decoder 313 first checks whether a MAP is received in step 701.

When the MAP is received, the MAP decoder 313 proceeds to step 703 and checks whether UL control region allocation information exists in the received MAP. Here, the UL control region is meant to include a ranging channel, a CQI channel, an ACK channel, and a sounding channel. The CQI channel has the same meaning as the fast feedback channel.

If the UL control region allocation information exists in the received MAP, the MAP decoder 313 proceeds to step 705 to modify the existing UL control region allocation information to the received UL control region allocation information.

On the other hand, if the UL control region allocation information does not exist in the received MAP, the MAP decoder 313 proceeds to step 707 and checks whether previously received UL control region allocation information is stored.

If the previously received UL control region allocation information is stored, the MAP decoder 313 proceeds to step 709 to check the valid period of use of the stored UL control region allocation information.

If the UL control region allocation information is valid, the MAP decoder 313 proceeds to step 711 and maintains the previously stored UL control region allocation information.

On the other hand, if the UL control region allocation information is invalid, the MAP decoder 313 proceeds to step 713 to delete the previously stored UL control region allocation information. The deletion of the UL control region allocation information is because the UL control region allocation information beyond the validity period cannot be trusted, so that the region indicated by the UL control region allocation information is not used. In addition to the above-described deletion method, a flag indicating whether the terminal is valid in the terminal may be set, or the terminal may check the valid period every time the UL control region is used.

In operation 715, the MAP decoder 313 checks data burst region information.

The above-described embodiment has described a procedure of periodically generating the UL control region allocation information and including it in a MAP message. Here, when the UL control region allocation information is included according to the above-described embodiment, the MAP message includes allocation information of the entire UL control region. However, instead of including the allocation information for the entire UL control region, a MAP message including only allocation information of a specific region (eg, a raining region) of the UL control region may be generated.

According to another embodiment of the present invention, when the base station generates MAP information, an indicator indicating an effective period for each uplink control region is provided. As one example, the CID value included in the UL-MAP_IE may be used as the valid period indicator of allocation information included in the corresponding UL-MAP_IE. For example, when considering the UL-MAP_IE indicating the initial ranging region information, when the base station sets the CID included in the UL-MAP_IE indicating the initial ranging region information to '0000', the initial ranging region information is newly changed. It can be used to mean that it is valid until transmitted. When the base station sets the CID included in the UL-MAP_IE indicating the initial ranging region to 'ffff', this may be used to mean that the initial ranging region information is valid only in a frame at which the UL-MAP_IE is received. . That is, the CID included in the UL-MAP_IE may be used to indicate the valid period information in the above-described second embodiment. In other words, when the CID is '0000', the validity period is a frame period until the corresponding information is newly received, and when the CID is 'ffff', the validity period is one frame.

Another embodiment of the present invention is a method of transmitting uplink control region allocation information in a broadcast message. Here, the broadcast message means a broadcast message having a characteristic of not being transmitted every frame. For example, an Uplink Channel Descript (UCD) message including a Type Length Value (TLV) as shown in Table 1 may be used.

Name Type (1 byte) Length Value Ranging region 212 5/10/15/20 The value of TLV consists of up to 4 concatenated sections (one section per Ranging method), each having the following structuer: Bit # 0 ~ 31, Contains same fields as in the section for UIUC = 12 in Table 287 Bit # 32 ~ 34 , Parameter d that defines Periodicity in 2 ^ d Frames Bit # 35 ~ 39, Allocation phase expressed in frames Fast Feedback Region 210 5 Bit # 0 ~ 31, Contains same fields as in the FAST FEEDBACK Allocation IE in Table 295a Bit # 32 ~ 34, Parameter d that defines periodicity in 2 ^ d Frames Bit # 35 ~ 39, Allocation phase expressed in frames HARQ Ack Region 211 4 Bit # 0 ~ 23, Contains the following fields as in HARQ ACKCH region allocation IE in Table 302t Bit # 24 ~ 26, Parameter d that defines periodicity in 2 ^ d Frames Bit # 27 ~ 31, Allocation phase expressed in frames Sounding region 213 5 For 5 bytes per each sounding region Bit # 0 ~ 31, Contains the following fields as in the PAPR reduction / Safety zone / Sounding zone allocation IE in Table 289 Bit # 32 ~ 34, Parameter d that defines periodicity in 2 ^ d Frames Bit # 35 ~ 39, Allocation phase expressed in frames
The broadcast message may include at least one UL control region allocation information among the information shown in Table 1 above. That is, the broadcast message may include the UL control region in a Ranging region (initial Ranging region, handover Ranging region, periodic Ranging region, bandwidth request Ranging region, etc.), fast feedback region in which CQI is fed back, and fast AR region of hybrid ARQ. The HARQ Ack region to which the response signal is fed back may include allocation information of the sounding region to which the sounding signal is transmitted. In this case, each UL control region allocation information may include resource allocation information element (Allocation IE), uplink control region allocation period information, and allocation phase information for specifying a starting point to which the allocation period is applied. Can be. Herein, the allocation period information may be expressed as d value when the allocation period is expressed by 2 ^d frames, and the allocation phase information may be expressed by the number of frames. When the UL control region allocation information is compared with Table 1, the resource allocation information is 'Allocation IE', the allocation period information is 'Parameter d that defines periodicity in 2 ^ d Frames', and the allocation phase information is 'Allocation phase'. corresponds to expressed in frames'.
The base station may also display the UL control region allocation information in the UL MAP at the same time. If the UL control region allocation information of the UCD and the UL control region allocation information of the UL MAP are different, the terminal reflects the higher priority information. Priority may be either UCD or UL MAP. If there is no corresponding TLV in the UCD, the UL control region allocation information is checked with reference to the UL MAP. As described above, since the MAP overhead is reduced when the broadcast message is used, downlink traffic capacity is increased.

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8 illustrates a procedure for confirming a resource allocation information message in a terminal of a broadband wireless communication system according to a third embodiment of the present invention. In the following description, an example in which priority is given to the UL MAP when the UCD and UL control region allocation information of the UL MAP collide with each other will be described.

Referring to FIG. 8, the MAP decoder 313 checks whether a MAP exists in a frame received in step 801.

If the MAP exists, the MAP decoder 313 proceeds to step 803 to perform cyclic redanduncy checking (CRC) of the MAP to check whether the MAP is normally received.

If the MAP is not normal, the MAP decoder 313 proceeds to step 805 to control the terminal not to operate during the frame.

On the other hand, if the MAP is normal, the MAP decoder 313 proceeds to step 807 and checks whether uplink control region allocation information exists in the MAP.

If the UL control region allocation information exists, the MAP decoder 313 proceeds to step 809 to change the UL control region allocation information in use.

In step 811, the MAP decoder 313 stores the changed UL control region allocation information. That is, the previously stored UL control region allocation information is updated with new UL control region allocation information.

If the UL control region allocation information does not exist in step 803, the MAP decoder 303 checks whether the UL control region allocation information exists in UCD in step 813.

If the UL control region allocation information exists in the UCD, the MAP decoder 313 proceeds to step 811 and stores UL control region allocation information existing in the UCD. That is, the previously stored UL control region allocation information is updated with new UL control region allocation information.

After storing the UL control region allocation information, the MAP decoder 313 proceeds to step 815 to obtain a MAP Information Element (IE) of the corresponding terminal.

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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.

As described above, by periodically transmitting the resource allocation information message of a specific region among the resource allocation information messages transmitted from the base station to the terminal in the broadband wireless communication system, the size of the resource allocation information message is reduced to thereby transmit the user data. Can be increased.

Claims (64)

delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete A method of operating a base station in a broadband wireless communication system, Generating a broadcast message including uplink control region allocation information; It characterized in that it comprises a process of broadcasting (broadcasting) the generated broadcast message, The broadcast message is characterized in that the characteristic is not transmitted every frame. The method of claim 37, wherein The broadcast message, characterized in that the UCD (Uplink Channel Descriptor) message. The method of claim 37, wherein The uplink control region, And at least one of a ranging region, a fast feedback region, a hybrid automatic repeat request (HARQ) response region, and a sounding region. The method of claim 37, wherein The uplink control region allocation information, And at least one of resource allocation information (Allocation IE), uplink control region allocation period information, and allocation phase information for specifying a start point to which the allocation period is applied. The method of claim 37, wherein The broadcasting process, Encoding the broadcast message; Modulating the encoded data; Mapping the modulated data to a predetermined resource; Converting the mapped data into a baseband signal through an inverse fast fourier transform (IFFT) operation; And converting the baseband signal into a radio frequency (RF) band signal and transmitting the signal. In the method of operating a terminal in a broadband wireless communication system, Receiving a broadcast message broadcasted; And acquiring uplink control region allocation information by decoding the broadcast message. The broadcast message is characterized in that the characteristic is not transmitted every frame. The method of claim 42, wherein The broadcast message, characterized in that the UCD (Uplink Channel Descriptor) message. The method of claim 42, wherein The uplink control region, And at least one of a ranging region, a fast feedback region, a hybrid automatic repeat request (HARQ) response region, and a sounding region. The method of claim 42, wherein The uplink control region allocation information, And at least one of resource allocation information (Allocation IE), uplink control region allocation period information, and allocation phase information for specifying a starting point to which the allocation period is applied. The method of claim 42, wherein Checking whether the same uplink control region allocation information is included in a map received in the frame in which the broadcast message is received; And selecting one according to a priority among uplink control region allocation information included in the map and uplink control region allocation information included in the broadcast message. The method of claim 42, wherein When uplink control region allocation information for the same control region as the uplink control region allocated by the broadcast message is included in the map received from the base station, in the frame where the map is received, the allocation by the map is determined by the broadcast. Method overriding periodic allocation by message. The method of claim 42, wherein Receiving the broadcast message, Converting a radio frequency (RF) band signal received through an antenna into a baseband signal; Converting the baseband signal into frequency domain data through an FFT (Fast Fouirer Transform) operation; Demodulating data to which the broadcast message signal is mapped among the frequency domain data; And decoding the demodulated data to generate the broadcast message. A base station apparatus in a broadband wireless communication system, A generator for generating a broadcast message including uplink control region allocation information; It characterized in that it comprises a transmitter for broadcasting the broadcast message (Broadcasting), The broadcast message is characterized in that the device is not transmitted every frame. The method of claim 49, The broadcast message, the device characterized in that the UCD (Uplink Channel Descriptor) message. The method of claim 49, The uplink control region, And at least one of a ranging region, a fast feedback region, a hybrid automatic repeat request (HARQ) response region, and a sounding region. The method of claim 49, The uplink control region allocation information, And at least one of resource allocation information (Allocation IE), uplink control region allocation period information, and allocation phase information for specifying a starting point to which the allocation period is applied. The method of claim 49, The transmitting unit, An encoder for encoding the broadcast message, A modulator for modulating data from the encoder; A mapper that maps data from the modulator to a predetermined resource; An orthgonal frequency division multiplexing (OFDM) modulator that transforms the mapped data into a baseband signal through an inverse fast fourier transform (IFFT) operation; And an RF transmitter for converting the baseband signal into a radio frequency (RF) band signal and transmitting the signal. A terminal device in a broadband wireless communication system, A receiver which receives a broadcast message broadcasted; And a decoder for decoding the broadcast message to obtain uplink control region allocation information. The broadcast message is characterized in that the device is not transmitted every frame. The method of claim 54, The broadcast message, the device characterized in that the UCD (Uplink Channel Descriptor) message. The method of claim 54, The uplink control region, And at least one of a ranging region, a fast feedback region, a hybrid automatic repeat request (HARQ) response region, and a sounding region. The method of claim 54, The uplink control region allocation information, And at least one of resource allocation information (Allocation IE), uplink control region allocation period information, and allocation phase information for specifying a starting point to which the allocation period is applied. The method of claim 54, The decoder, When the same MAP received in the frame receiving the broadcast message includes the same uplink control region allocation information, the uplink control region allocation information included in the map and the uplink control region included in the broadcast message. Device for selecting one according to the priority of the allocation information. The method of claim 54, The decoder, When uplink control region allocation information for the same control region as the uplink control region allocated by the broadcast message is included in a map received from the base station, the broadcast allocation is performed by the map in the frame in which the map is received. Priority over periodic assignment by message. The method of claim 59, If the uplink control region allocation information is not included in the broadcast message and the map, the apparatus further comprises a transmitter for performing signaling according to the stored uplink control region allocation information. The method of claim 59, When the broadcast message or the map includes the uplink control region allocation information, further comprising a transmitter for performing uplink signaling using uplink control region allocation information included in the broadcast message or the map. Device. The method of claim 54, The receiving unit, An RF receiver for converting a radio frequency (RF) band signal received through an antenna into a baseband signal; An orthogonal frequency division multiplexing (OFDM) demodulator for converting the baseband signal into frequency domain data through a fast ouir transform (FFT) operation; A demodulator for demodulating data to which the broadcast message is mapped among the frequency domain data; And a decoder for decoding the demodulated data to generate the broadcast message. A method of operating a base station in a broadband wireless communication system, Uplink Channel Descriptor including allocation information for at least one uplink control region among a ranging region, a fast feedback region, a hybrid automatic repeat reQuest (HARQ) response region, and a sounding region ) Generating the message, Characterized in that it comprises a process of broadcasting a UCD message (Broadcasting), The UCD message, at least one of the parameters as shown in the following table. Name Type (1 byte) Length Value   Ranging Region  212  5/10/15/20 The value of TLV consists of up to 4 concatenated sections (one section per Ranging method), each having the following structuer: bit Bits # 0-31 contain the same fields as the section of UIUC = 12 (Bit # 0 ~ 31, Contains same fields as in the section for UIUC = 12). (Bit # 32 ~ 34, Parameter d that defines Periodicity in 2 ^ d Frames) Bits # 35-39 are allocation phases expressed in units of frames. (Bit # 35 ~ 39, Allocation phase expressed in frames) Fast Feedback Region  210  5 Bits # 0-31 contain the same fields as the Quick Feedback Allocation IE. (Bit # 0 ~ 31, Contains same fields as in the FAST FEEDBACK Allocation IE) (Bit # 32 ~ 34, Parameter d that defines Periodicity in 2 ^ d Frames) Bits # 35-39 are the allocation phase expressed in units of frames. (Bit # 35 ~ 39, Allocation phase expressed in frames)  HARQ ACK Region  211  4 Bits 0 through 23 include HARQ ACK channel region allocation IE. ((Bit # 0 ~ 23, Contains the following fields as in HARQ ACKCH region allocation IE) (Bit # 24-26, Parameter d that defines Periodicity in 2 ^ d Frames) Bits # 27-31 are allocation phases expressed in units of frames. (Bit # 27-31, Allocation phase expressed in frames)  Sounding Region  213  5 (For 5 bytes per each sounding region) Bits # 0-31 contain fields such as PAPR Reduction / Safety Zone / Sounding Zone Assignment IE. (Bit # 0 ~ 31 , Contains the following fields as in the PAPR reduction / Safety zone / Sounding zone allocation IE) Bits # 32-34 are the parameter d defined in the allocation period '2 ^ d frames'. Defines Periodicity in 2 ^ d Frames) Bits # 35-39 are allocation phases expressed in units of frames. In the method of operating a terminal in a broadband wireless communication system, Receiving a Uplink Channel Descriptor (UCD) message broadcasted by a base station; Acquire the allocation information on at least one uplink control region among a ranging region, a fast feedback region, a hybrid automatic repeat request (HARQ) response region, and a sounding region by decoding the UCD message. Characterized in that it comprises a process to, The UCD message, at least one of the parameters as shown in the following table. Name Type (1 byte) Length Value   Ranging Region  212  5/10/15/20 The value of TLV consists of up to 4 concatenated sections (one section per Ranging method), each having the following structuer: bit Bits # 0-31 contain the same fields as the section of UIUC = 12 (Bit # 0 ~ 31, Contains same fields as in the section for UIUC = 12). (Bit # 32 ~ 34, Parameter d that defines Periodicity in 2 ^ d Frames) Bits # 35-39 are allocation phases expressed in units of frames. (Bit # 35 ~ 39, Allocation phase expressed in frames) Fast Feedback Region  210  5 Bits # 0-31 contain the same fields as the Quick Feedback Allocation IE. (Bit # 0 ~ 31, Contains same fields as in the FAST FEEDBACK Allocation IE) (Bit # 32 ~ 34, Parameter d that defines Periodicity in 2 ^ d Frames) Bits # 35-39 are the allocation phase expressed in units of frames. (Bit # 35 ~ 39, Allocation phase expressed in frames)  HARQ ACK Region  211  4 Bits 0 through 23 include HARQ ACK channel region allocation IE. ((Bit # 0 ~ 23, Contains the following fields as in HARQ ACKCH region allocation IE) (Bit # 24-26, Parameter d that defines Periodicity in 2 ^ d Frames) Bits # 27-31 are allocation phases expressed in units of frames. (Bit # 27-31, Allocation phase expressed in frames)  Sounding Region  213  5 (For 5 bytes per each sounding region) Bits # 0-31 contain fields such as PAPR Reduction / Safety Zone / Sounding Zone Assignment IE. (Bit # 0 ~ 31 , Contains the following fields as in the PAPR reduction / Safety zone / Sounding zone allocation IE) Bits # 32-34 are the parameter d defined in the allocation period '2 ^ d frames'. Defines Periodicity in 2 ^ d Frames) Bits # 35-39 are allocation phases expressed in units of frames.

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