KR20090039968A - Apparatus and method for transmission of resource allocation information in wireless communication system - Google Patents

Abstract

A resource allocation information transmitting device and a method thereof in a wireless communications system by composing resource allocation information including configuring information of the other resource allocation information are provided to reduce the overhead according to resource allocation information. A resources is allocated to terminals positioned in a service area(301). The resource allocation information including the configuring information of a modulation level is the other resource allocation information with two or more resource allocation information in which the modulation level is different(309). The resource allocation information are transmitted to terminals(311).

Description

Apparatus and method for transmitting resource allocation information in wireless communication system {APPARATUS AND METHOD FOR TRANSMISSION OF RESOURCE ALLOCATION INFORMATION IN WIRELESS COMMUNICATION SYSTEM}

The present invention relates to an apparatus and method for transmitting resource allocation information in a wireless communication system, and in particular, to configure resource allocation information having a modulation scheme and code rate suitable for a channel state according to terminals having similar channel states in the wireless communication system. An apparatus and method are provided.

When the orthogonal frequency division multiple access (orthogonal frequency division multiple access) scheme is used in the wireless communication system, the base station provides resource allocation information for transmitting and receiving data with the terminals to distinguish the data of the terminals located in the service area. Configure. For example, when using the Institute of Electrical and Electronics Engineers (IEEE) 802.16e standard, the base station configures a map for transmitting resource region information allocated to the terminals. Here, the map includes a downlink map (DL-MAP) including resource region information for transmitting data to the base station by the base station and an uplink map including resource region information for transmitting data to the base station. UL-MAP).

At this time, the base station configures the map to have a low level modulation scheme and a high code rate so that all terminals located in the service area can identify the map.

As described above, when the map is configured to have a low level modulation scheme and a high code rate, a problem arises in that unnecessary resources are consumed more by UEs having a good channel state. Accordingly, the base station of the wireless communication system may configure a separate submap for terminals having a similar channel state among the terminals having good channel states as shown in FIG. 1 to reduce waste of unnecessary resources. In this case, the submap determines a modulation scheme and a code rate in consideration of the channel state of the terminals.

1 illustrates a frame configuration of a wireless communication system according to the prior art.

As shown in FIG. 1, the frame is divided into a downlink subframe 100 and an uplink subframe 130 through time resources.

The downlink subframe 100 is divided into a preamble 101, a map 103, and a downlink burst 105.

The preamble 101 represents an area for transmitting a synchronization signal transmitted so that terminals located in a service area can acquire time and frequency synchronization.

The map 103 represents an area including resource allocation information of the terminals. In this case, the map 103 includes a frame control header (FCH), a compression map, and a sub map. The FCH includes information for decoding the compressed map.

The compression map is configured to include resource allocation information with a low level modulation scheme and a high code rate so that all terminals included in the service area can be identified.

If a submap needs to be configured, the compressed map includes configuration information of the submaps. For example, the compressed map configures HARQ and SUB_MAP Pointer IE to include configuration information of submaps. In this case, the HARQ and submap pointer information elements include the modulation level of the submap and the length information of the submap. In addition, when the channel states of the terminals are variously distributed, the base station may include up to three submaps having different modulation schemes. In this case, the compression map includes configuration information for each submap.

The submap includes resource allocation information of terminals having a similar channel state among terminals having a good channel state. In this case, the submap is configured to include resource allocation information of terminals having similar channel states to modulation levels defined in the HARQ and submap pointer information elements of the compressed map.

The downlink burst 105 represents an area for transmitting downlink data from the base station to the terminals according to the resource allocation information included in the map 103.

The uplink subframe 130 includes a control channel 131 and an uplink burst 133. The control channel 131 represents an area for transmitting uplink control signals transmitted by the terminals to the base station.

The uplink burst 133 represents an area for transmitting uplink data transmitted from each terminal to the base station according to resource allocation information included in the map 103.

As described above, the wireless communication system uses a submap configuration scheme to reduce overhead according to resource allocation information. However, since a compression map having a low level modulation scheme and a high code rate includes configuration information for each submap, an overhead according to configuration information for the submap occurs.

Accordingly, an object of the present invention is to provide an apparatus and method for reducing overhead according to resource allocation information in a wireless communication system.

Another object of the present invention is to provide an apparatus and method for reducing overhead caused by configuring resource allocation information having different modulation schemes and code rates in a wireless communication system.

Another object of the present invention is to provide an apparatus and method for reducing overhead according to the configuration of a submap when configuring a submap (SUB_MAP) in a wireless communication system.

It is still another object of the present invention to provide an apparatus and method for configuring a compressed map or a submap to include configuration information of a submap located next to it in a wireless communication system.

According to a first aspect of the present invention for achieving the objects of the present invention, a method for configuring resource allocation information in a wireless communication system, the process of allocating resources to the terminals located in the service area and the modulation level is different In the case of configuring at least two resource allocation information, a process of configuring resource allocation information including configuration information of resource allocation information having a different modulation level, and transmitting the resource allocation information to the terminals It is characterized by including.

According to a second aspect of the present invention, a method for identifying resource allocation information in a wireless communication system includes the steps of decoding the first resource allocation information from a signal received from a serving base station to determine whether its own resource allocation information exists; When the resource allocation information does not exist, checking the configuration information of the second resource allocation information having a different modulation level located next to the first resource allocation information; And decoding the resource allocation information to check whether the resource allocation information exists.

According to a third aspect of the present invention, a resource allocation apparatus in a wireless communication system includes a scheduler for allocating resources for terminals located in a service area, and configuration information of resource allocation information located next to the resource allocation information to be configured. A resource allocation information generator constituting at least one resource allocation information having a different modulation level to include a; and a modulation level determined according to a channel state of terminals including the resource information allocated to each resource allocation information. And an encoder for encoding and a transmitter for transmitting the encoded resource allocation information to the terminals.

According to a fourth aspect of the present invention, an apparatus for identifying resource allocation information in a wireless communication system includes: a receiving unit for receiving resource allocation information from a serving base station, and demodulating and decoding the resource allocation information according to a modulation level provided from a control unit; A decoder to determine resource allocation information allocated to the demodulated and decoded resource allocation information, and if the resource allocation information allocated to the resource allocation information does not exist, the resource allocation information is included in the resource allocation information. And a control unit for identifying configuration information of resource allocation information having a different modulation level located next and transmitting the same to the decoder.

As described above, by configuring resource allocation information such that a modulation level (for example, Modulation and Coding Scheme (MCS)) located next to itself in a wireless communication system includes configuration information about other resource allocation information, This has the advantage of reducing overhead.

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, a description will be given of a technique for configuring resource allocation information having different modulation levels in order to reduce overhead caused by resource allocation information in a wireless communication system. Furthermore, in the case of configuring resource allocation information having different modulation levels in the wireless communication system, a technique for reducing overhead that increases as the configuration information of resource allocation information having different modulation levels is described. Here, the modulation level is a modulation and coding scheme (MCS) level, and includes a modulation scheme and a code rate.

In the following description, a wireless communication system using an Orthogonal Frequency Division Multiplexing (OFDM) scheme is described as an example. Therefore, it is assumed that the transmitting end of the wireless communication system constructs a map MAP including resource allocation information of the terminals located in the service area and transmits the map MAP to the terminals.

A base station of the wireless communication system configures a map to transmit resource allocation information allocated to terminals located in a service area. In this case, the base station may set the modulation level of the resource allocation information for each terminal differently according to the channel information of the terminals. That is, the base station configures compression map information, which is resource allocation information that can be received by all terminals located in a service area, and submap information, which is resource allocation information of terminals having good channel conditions. In this case, the base station may configure a frame including a compression map and a sub map as shown in FIG. 2.

2 shows a frame structure of a wireless communication system according to the present invention.

As shown in FIG. 2, the frame is divided into a downlink subframe 200 and an uplink subframe 230 through time resources.

The downlink subframe 200 is divided into a preamble 201, a map 203, and a downlink burst 205.

The preamble 201 indicates an area for transmitting a synchronization signal transmitted so that terminals located in a service area can acquire time and frequency synchronization.

The map 203 represents an area for transmitting resource allocation information of the terminals. In this case, the map 203 includes a frame control header (FCH), a compression map, and a sub map. In this case, when there are a plurality of submaps, the map 203 sequentially includes the submaps having a low modulation level.

The FCH includes information for decoding the compressed map. The compression map is configured to include resource allocation information with a low level modulation scheme and a high code rate so that all terminals included in the service area can be identified.

If there is a submap, the compressed map includes the configuration information 210 of the first submap 211 to be located next to it in the map 203. For example, the compressed map includes configuration information 210 of the first submap 211 using HARQ and SUB_MAP Pointer IE, which is configured as shown in Table 1 below. can do.

Syntax Size (bit) DL_MAP_IE () {   DIUC (10) 4   Extended DIUC 4   Length 4   while (data remains) {     DIUC (11) 4     No.Slots 8     Repetition coding indication 2     Map Version 2     if (Map Version == 10) {       Idle users One       Sleep users One       CID Mask Length 2       CID Mask n     }   } }

Here, the HARQ and submap pointer information elements indicate that the HARQ and submap pointer information elements include configuration information of the submap using the DIUC field 10 and the extended DIUC field. In this case, the HARQ and submap pointer information elements include a DIUC field 11 indicating a modulation scheme of the first submap 211 and a slot number indicating the total number of slots to be used by the first submap 211. .Slots field, a repetition coding indication field indicating a repetition coding index in the first submap 211, and a map version field including version information of the first submap 211. It is configured to include.

In another embodiment, the compression map may include configuration information 210 of the first submap 211 using a submap pointer information element (SUB MAP Pointer IE) configured as shown in Table 2 below.

Syntax Size (bit) DL_MAP_IE () {   DIUC 4   Extended DIUC 4   Length 4   while (data remains) {     MCS for Following SUB_MAP 4     Following SUB_MAP message Length 10     Map Version 2     if (Map Version == 10) {       Idle users One       Sleep users One       CID Mask Length 2       CID Mask n     }   } }

Here, the submap pointer information element indicates that the submap pointer information element includes configuration information of the submap using the DIUC field and the extended DIUC field. In this case, the submap pointer information element may include an MCS field (MCS for Following SUB_MAP) indicating a modulation scheme of the first submap 211 and a repetitive coding index, and a message length indicating the length of the first submap 211. It includes a Following SUB_MAP message Length field and a MAP Version field including version information of the first submap 211. In this case, the MCS field includes information of the DIUC field 11 and the iterative coding index field of Table 1. That is, the DIUC field 11 of Table 1 specifies the modulation scheme of the resource region allocated to each terminal in the value of 0-12. In addition, the iterative coding index field is used only when the DIUC field 11 is Quadrature Phase Shift Keying (QPSK) 1/2 modulation having a value of zero. Accordingly, the information about the DIUC field 11 and the iterative coding index field may be included in one field like the MCS field by corresponding to the value not used in the DIUC field 11.

In another embodiment, the compression map may be configured as shown in Table 3 below to include configuration information 210 of the first submap 211.

Name Size (bit) Compressed_DL_MAP () {   Compressed map indicator 3   UL_MAP appended One   Following SUB_MAP Indication One   Map message length 11   PHY Synchronization Field 32   DCD Count 8   Operator ID 8   Sector ID 8   NO. OFDMA Symbols 8   DLIE count 8   for (i = 1; i = <DLIE count; i ++) {     DL_MAP_IE () var   }   if (Following SUB_MAP Indication == 1) {     MCS for Following SUB_MAP 4     Following SUB_MAP message Length 10     MAP Version 2   }   if (! byte boundary) {     Padding nibble 4   } }

Here, the compressed map is a sub-map indication field indicating whether a sub map exists below, and if the first sub map 211 exists below, the modulation level of the first sub map 211. And a MCS field (MCS for Following SUB_MAP) indicating a repetitive coding index, a Following SUB_MAP message Length field indicating a length of the first submap 211, and version information of the first submap 211. It is configured to include a MAP Version field.

The first submap 211 includes resource allocation information of terminals having similar channel states among terminals having good channel states. In this case, the first submap 211 is configured to include resource allocation information of terminals having similar channel states with modulation levels included in the submap configuration information 210 of the compressed map. That is, the first submap 211 has a modulation scheme and a code rate suitable for the channel state of terminals including resource allocation information.

If the second submap 221 exists below the first submap 211, the first submap 211 includes configuration information 220 of the second submap 221. do. In this case, the first submap 211 is configured information 220 of the second submap 221 using HARQ and SUB_MAP Pointer IE configured as shown in Table 1 below. ) May be included.

In another embodiment, when the compressed map includes configuration information of the first submap 211 in the form of <Table 2> or <Table 3>, the first submap 211 is the second submap. It may be configured as shown in Table 4 to include the configuration information 220 of 221.

Name Size (bit) SUB_DL_UL_MAP   SUB_DL_UL map indicator 3   RCID type 2   HARQ ACK offset indicator One   if (HARQ ACK offset indicator == 1) {     DL HARQ ACK offset 8     UL HARQ ACK offset 8   }   DL IE count 8   for (i = 1; i = <DL IE count; i ++) {     DL_MAP_IE () var   }   OFDMA symbol offset 8   Subchannel offset 7   reserved One   while (map data remains) {     UL_MAP_IE () var   }   Following SUB_MAP Indication One   if (Following SUB_MAP Indication == 1) {     MCS for Following SUB_MAP 4     Following SUB_MAP message Length 10     MAP Version 2   }   if (! byte boundary) {     Padding nibble var   } }

Here, the first submap has a submap indication (Following SUB_MAP Indication) field indicating whether or not a submap exists below, and when the second submap 221 exists below, An MCS field (MCS for Following SUB_MAP) indicating a modulation level and a repetition coding index, a Following SUB_MAP message Length field indicating a length of the second submap 221, and version information of the second submap 221. It is configured to include a map version (MAP Version) field including.

The second submap 221 includes resource allocation information of terminals having similar channel states except for terminals in which the resource allocation information is included in the first submap 211 among terminals having good channel states. In this case, the second submap 221 is configured to include resource allocation information of terminals having similar channel states at the modulation level included in the submap configuration information 220 of the first submap 211. That is, the second submap 221 has a modulation scheme and a code rate suitable for the channel state of terminals including resource allocation information.

The downlink burst 205 represents an area for transmitting downlink data from the base station to the terminals according to the resource allocation information included in the map 203.

The uplink subframe 230 includes a control channel 231 and an uplink burst 233. The control channel 231 represents an area for transmitting uplink control signals transmitted by the terminals to the base station.

The uplink burst 233 represents an area for transmitting uplink data transmitted by each terminal to the base station according to resource allocation information included in the map 203.

As described above, the base station of the wireless communication system operates as shown in FIG. 3 to form a submap having different modulation levels.

3 illustrates a procedure for transmitting resource allocation information in a transmitting end of a wireless communication system according to an embodiment of the present invention.

Referring to FIG. 3, the base station first allocates resources to terminals located in a service area in step 301.

After performing the resource allocation, the base station proceeds to step 303 to determine the channel state of the terminals to which the resource is allocated to determine whether to generate a submap with a different modulation level. That is, the base station determines to configure a submap when there is a terminal having a good channel state among the terminals to which the resource is allocated.

If the submap is not generated, the base station proceeds to step 315 to configure resource allocation information of the terminals using the compressed map. In this case, the compressed map does not include configuration information of the sub map. For example, the base station does not generate an information element including configuration information of a submap as shown in Table 1 or Table 2. In addition, the base station configures a compression map to have a value indicating that a submap does not exist in the submap indication field of Table 3 below.

After configuring the compression map, the base station proceeds to step 311 and transmits the compressed map information to the terminals located in the service area.

On the other hand, when generating the submap, the base station proceeds to step 305 and configures the compressed map to include the configuration information of the first submap located below. For example, the base station configures a compression map to include configuration information of the first submap using an information element configured as shown in Table 1 or Table 2. In another embodiment, the base station configures a compression map configured as shown in Table 3 to include configuration information of the first submap.

After configuring the compressed map including the configuration information of the submap, the base station determines whether to configure a second submap having a modulation level different from that of the first submap in step 307. That is, the base station determines to configure the second submap when there are terminals in a channel state different from those in which resource allocation information is configured through the first submap among the terminals having a good channel state.

If the second submap is configured, the base station proceeds to step 313 and configures the first submap to include configuration information of a second submap located below. For example, when the compression map includes configuration information of the first submap using the information element configured as shown in Table 1, the base station selects the information element configured as shown in Table 1 above. The first submap is configured to include configuration information of the second submap. In another embodiment, when the compressed map includes configuration information of the first submap in the form of <Table 2> or <Table 3>, the base station configures the configuration of the second submap as shown in <Table 4>. Configure the first submap to include the information.

Thereafter, the base station returns to step 307 to determine whether to configure a submap having a modulation level different from that of the first submap and the second submap.

If the second submap is not configured in step 307, the base station proceeds to step 309 to configure a first submap including resource allocation information for UEs having good channel conditions. In this case, the first submap does not include configuration information of the lower submap. For example, the base station does not generate an information element including configuration information of a submap as shown in Table 1 above. In addition, the base station configures the first submap to have a value indicating that no submap exists in the submap indication field of Table 4 below.

After configuring the submap, the base station proceeds to step 311 and transmits the compressed map and the submap information to the terminals located in the service area.

The base station then terminates this algorithm.

When the base station of the wireless communication system transmits resource allocation information as shown in FIG. 3, the terminal operates as shown in FIG. 4 to confirm resource allocation information allocated thereto.

4 illustrates a procedure for confirming resource allocation information at a receiving end of a wireless communication system according to an embodiment of the present invention.

Referring to FIG. 4, first, in step 401, the terminal determines whether a signal is received from the serving base station.

When the signal is received from the serving base station, the terminal proceeds to step 403 to decode the compressed map from the map included in the received signal.

In step 405, the terminal determines whether the resource information allocated to the serving base station is present in the compression map. For example, the terminal checks whether there is a downlink map and an uplink map including its identifier (eg, CID (Connection ID)) in the compression map.

If there is no downlink map or uplink map including its identifier in the compressed map, the terminal proceeds to step 407 to check configuration information of the submap included in the compressed map.

After checking the configuration information of the submap, the terminal proceeds to step 409 and decodes the first submap located next to the compressed map using the checked configuration information of the submap.

Thereafter, the terminal returns to step 405 and checks whether there is resource information allocated to itself by the serving base station in the first submap. For example, the terminal checks whether a downlink map and an uplink map including its identifier exist in the first submap.

If there is no downlink map or uplink map including its identifier in the compressed map and the first submap, the terminal proceeds to step 407 and includes the next location included in the first submap. Check the configuration information of the submap.

On the other hand, if there is a downlink map and uplink map including its identifier in step 405, the terminal proceeds to step 411 to identify the resources allocated from the serving base station in the downlink and uplink map do.

Thereafter, the terminal terminates the present algorithm.

Hereinafter, a description will be given of a block configuration of a base station for configuring a submap having a different modulation level in the wireless communication system and a terminal for identifying a resource allocated from the base station through a map transmitted by the base station.

5 is a block diagram of a transmitter for transmitting resource allocation information in a wireless communication system according to the present invention.

As shown in FIG. 5, the base station, which is a transmitting end, includes a scheduler 501, a resource allocation information generator 503, an encoder 505, an OFDM modulator 507, a digital / analog converter, and an RF (Radio). Frequency) processor 509 is configured.

The scheduler 501 allocates resources for transmitting and receiving data to and from each terminal through scheduling in consideration of the channel state of the terminals located in the service area.

The resource allocation information generator 503 generates a map including allocation information of resources allocated to the terminals by the scheduler 501. In this case, the resource allocation information generator 503 configures a compression map for transmitting to all the terminals located in the service area and a sub map for transmitting to the terminals having a good channel state.

If a submap is configured, the resource allocation information generator 503 uses a test element constructed as shown in Table 1 or Table 2 of the first sub map next to the compression map. Configure the compression map to include configuration information. In another embodiment, the resource allocation information generator 503 configures the compression map as shown in Table 3 to include configuration information of a first submap that is located next to the compression map.

In addition, when configuring a second submap after the first submap, the resource allocation information generator 503 uses configuration information of the second submap using an information element configured as shown in Table 1 below. Configure the first submap to include. As another embodiment, when the compression map includes configuration information of the first submap in the form of <Table 2> or <Table 3>, the resource allocation information generator 503 may configure configuration information of the second submap. The first submap is configured to include as shown in Table 4.

The encoder 505 codes and outputs the data of the map provided from the resource allocation information generator 503 according to a predetermined modulation level (MCS level). In this case, the encoder 505 codes and modulates the compressed map by using a high code rate and a low rank modulation scheme so that all terminals located in the service area can be identified. In addition, the encoder 505 codes and modulates the submap using a modulation scheme and a code rate suitable for channel states of terminals transmitting resource allocation information through the submap under the control of the scheduler 501. .

The OFDM modulator 507 outputs sample data (OFDM symbols) by performing inverse fast Fourier transform on the resource allocation information provided from the encoder 505. The digital-to-analog converter 509 converts the sample data provided from the OFDM modulator 507 into an analog signal and outputs the analog signal.

The RF processor 511 converts a baseband analog signal provided from the digital / analog converter 509 into a high frequency (RF) signal and transmits the same through an antenna.

6 is a block diagram of a receiving end for confirming resource allocation information in a wireless communication system according to the present invention.

As shown in FIG. 6, the terminal, which is a receiving end, includes an RF processor 601, an analog / digital converter 603, an OFDM demodulator 605, a decoder 607, and a controller 609. It is configured by.

The RF processor 601 converts a radio frequency (RF) signal received through an antenna into a baseband analog signal. The analog / digital converter 603 converts an analog signal provided from the RF processor 601 into sample data and outputs the sample data.

The OFDM demodulator 605 outputs data in a frequency domain by fast Fourier transforming the sample data provided from the analog / digital converter 603.

The decoder 607 selects data of subcarriers to be actually received from data in a frequency domain provided from the OFDM demodulator 605. Thereafter, the decoder 607 demodulates and decodes the selected data according to a predetermined modulation level (MCS level). For example, the decoder 607 performs demodulation and decoding according to modulation levels of the compressed map and the submap provided from the controller 609.

The controller 609 checks the resource information allocated from the serving base station in the demodulated and decoded map provided from the decoder 607. That is, the controller 609 checks whether there is a downlink map and an uplink map including its identifier (CID: Connection ID) in the compressed map and the submap demodulated and decoded by the decoder 607.

At this time, the controller 609 decodes a frame control header and transmits modulation level information for decoding the compressed map to the decoder 607. If there is no downlink map or uplink map including its identifier in the compressed map, the controller 609 checks configuration information of the first submap included in the compressed map. Thereafter, the controller 609 transmits configuration information of the first submap to the decoder 607 so that the decoder 607 can decode a first submap that is located after the compressed map.

If there is no downlink map or uplink map including its identifier in the compressed map and the first submap, the controller 609 configures a second submap included in the first submap. Check the information. Thereafter, the controller 609 transmits configuration information of the first submap to the decoder 607 so that the decoder 607 can decode a second submap positioned after the first submap. do.

Hereinafter, a description will be given of a performance change caused by configuring a compression map and a submap to include configuration information of a submap located next in a base station of the wireless communication system.

7 illustrates a performance change graph according to an embodiment of the present invention. In the following description, the horizontal axis represents the number of users, and the vertical axis represents the map overhead in order to indicate the overhead change of resource allocation information according to the method of configuring the compressed map and the sub map.

Referring to FIG. 7, the compressed map includes submap scheme 700 including configuration information of submaps, a first submap scheme 710, a second submap scheme 720, and a third submap. The overhead change in constructing the map using scheme 730 is shown. In this case, the first sub-map method 710 configures a compressed map and a sub-map to include configuration information of a sub-map located next to it using information elements configured as shown in Table 1 below. Indicates. The second submap method 720 configures a compressed map to include configuration information of a submap located next to itself using information elements configured as shown in Table 2, A method of configuring a submap as shown in Table 4 above to include configuration information of the submap is shown. In addition, the third submap method 730 configures a compression map as shown in Table 3 to include configuration information of a submap located next to itself, and configures configuration information of a submap located next to itself. A method of configuring a submap as shown in Table 4 above is shown.

As shown, when using the first sub-map method 710, the second sub-map method 720 and the third sub-map method 730 according to the present invention rather than the sub-map method 700 according to the prior art The slot occupied by the allocation information is reduced. That is, according to the present invention, when the compression map and the submap are configured to include only the configuration information of the submap next to them, the overhead according to the resource allocation information can be reduced.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications may be made 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 diagram showing a frame configuration of a wireless communication system according to the prior art;

2 is a diagram illustrating a frame configuration of a wireless communication system according to the present invention;

3 is a diagram illustrating a procedure for transmitting resource allocation information in a transmitting end of a wireless communication system according to an embodiment of the present invention;

4 is a diagram illustrating a procedure for checking resource allocation information at a receiving end of a wireless communication system according to an embodiment of the present invention;

5 is a block diagram of a transmitter for transmitting resource allocation information in a wireless communication system according to the present invention;

6 is a block diagram of a receiving end for confirming resource allocation information in a wireless communication system according to the present invention;

7 is a diagram illustrating a performance change graph according to an embodiment of the present invention.

Claims (25)

In the method for configuring resource allocation information in a wireless communication system, Allocating resources to terminals located in a service area; When configuring at least two resource allocation information having different modulation levels, configuring resource allocation information including configuration information of resource allocation information having a different modulation level located next; And transmitting the resource allocation information to the terminals. The method of claim 1, The modulation level comprises a modulation and coding scheme (MCS) level. The method of claim 1, The resource allocation information, characterized in that it comprises a map (MAP). The method of claim 1, The process of configuring the resource allocation information, Configuring the first resource allocation information including configuration information of second resource allocation information located next to the first resource allocation information among the resource allocation information; Determining whether third resource allocation information having a different modulation level is located next to the second resource allocation information; And when the third resource allocation information is not located, configuring second resource allocation information of a modulation level determined in consideration of a channel state of a terminal including resource information allocated to the second resource allocation information. How to feature. The method of claim 4, wherein The first resource allocation information has a low modulation level so that all terminals located in the service area can be identified. The method of claim 4, wherein And when the third resource allocation information is located, configuring second resource allocation information including configuration information of the third resource allocation information. The method of claim 1, The resource allocation information may include a modulation scheme of resource allocation information having a different modulation level next to the resource allocation information, a number of slots in which resource allocation information having a different modulation level is located, and a resource allocation information having different modulation levels. And including configuration information of resource allocation information having different modulation levels by using an information element including at least one of a repetition coding indication and version information of resource allocation information having different modulation levels. How to feature. The method of claim 1, The resource allocation information may include at least one of a modulation level of resource allocation information having a different modulation level next to the resource allocation information, a size of resource allocation information having a different modulation level, and version information of resource allocation information having a different modulation level. And using the information element including one, the configuration information of resource allocation information having different modulation levels. The method of claim 1, The resource allocation information may include an index indicating whether configuration information of resource allocation information having different modulation levels is included in order to include configuration information of resource allocation information having a different modulation level located next to the resource allocation information, and the modulation level. And at least one of a modulation level of the other resource allocation information, a size of resource allocation information having a different modulation level, and version information of resource allocation information having a different modulation level. The method of claim 1, The process of transmitting the resource allocation information, Generating a message sequentially located from resource allocation information having a low modulation level among the resource allocation information; Transmitting the message to the terminals. In the method for confirming resource allocation information in a wireless communication system, Decoding the first resource allocation information from the signal received from the serving base station and checking whether its own resource allocation information exists; If the resource allocation information does not exist, checking the configuration information of the second resource allocation information having a different modulation level located next to the first resource allocation information; And decoding the second resource allocation information according to the checked configuration information to determine whether the own resource allocation information exists. The method of claim 11, And the first resource allocation information is resource allocation information encoded and transmitted at a low modulation level so that the serving base station can identify all terminals located in a service area. The method of claim 11, The process of checking whether the own resource allocation information exists, And checking whether there is a map (MAP) including its connection identifier (CID) in the resource allocation information. The method of claim 11, The configuration information of the resource allocation information may include a modulation scheme of the second resource allocation information, a size of the second resource allocation information, a repetition coding indication of the second resource allocation information, and the second resource allocation information. At least one of the version information of the. The method of claim 11, The modulation level comprises a modulation and coding scheme (MCS) level. The method of claim 11, The resource allocation information, characterized in that it comprises a map (MAP). In the device for allocating resources in a wireless communication system, A scheduler for allocating resources for terminals located in a service area; A resource allocation information generator constituting at least one resource allocation information having a different modulation level to include configuration information of resource allocation information located next to the resource allocation information to be configured; An encoder for encoding the resource allocation information at a modulation level determined according to a channel state of terminals including resource information allocated to each resource allocation information; And a transmitter for transmitting the encoded resource allocation information to the terminals. The method of claim 17, The resource allocation information generator may include a modulation scheme of resource allocation information having different modulation levels located next to the resource allocation information to be configured, the number of slots in which resource allocation information having different modulation levels is located, and resource allocations having different modulation levels. It includes configuration information of resource allocation information having different modulation levels by using an information element including at least one of a repetition coding indication of information and version information of resource allocation information having different modulation levels. And configuring resource allocation information. The method of claim 17, The resource allocation information generator may include a modulation level of resource allocation information having a different modulation level located next to the resource allocation information to be configured, a size of resource allocation information having a different modulation level, and a second resource allocation information having different modulation levels. And resource allocation information including configuration information of resource allocation information having different modulation levels by using an information element including at least one of version information. The method of claim 17, The resource allocation information generator may include an index indicating whether to include configuration information of resource allocation information having a different modulation level next to the resource allocation information to be configured, a modulation level of resource allocation information having a different modulation level, and the modulation level. And at least one of a size of different resource allocation information and version information of resource allocation information having different modulation levels, thereby configuring resource allocation information including configuration information of resource allocation information having different modulation levels. The method of claim 17, The encoder encodes the first resource allocation information among the resource allocation information at a low modulation level so that all terminals located in the service area can be identified. And encoding resource allocation information of a modulation level different from the first resource allocation information at a modulation level determined according to a channel state of terminals including resource information allocated to each resource allocation information. The method of claim 17, The transmitter, And generating a message sequentially located from resource allocation information having a low modulation level among the resource allocation information and transmitting the generated messages to the terminals. An apparatus for identifying resource allocation information in a wireless communication system, A receiving unit for receiving resource allocation information from the serving base station, A decoder for demodulating and decoding the resource allocation information according to a modulation level provided from a control unit; Check the resource allocation information allocated to the demodulated and decoded resource allocation information, and if the resource allocation information assigned to the resource does not exist in the resource allocation information, the next modulation included in the resource allocation information And a controller for identifying configuration information of resource allocation information having different levels and transmitting the same to the decoder. The method of claim 23, wherein The controller checks whether there is a map (MAP) including its connection identifier (CID: Connection ID) in the resource allocation information and recognizes that the map including its connection identifier is resource allocation information allocated to itself. Device characterized in that. The method of claim 23, wherein If there is no resource allocation information allocated to the resource allocation information, the controller may include a modulation scheme of resource allocation information having a different modulation level next to the resource allocation information, and resource allocation information having different modulation levels. Verifying configuration information of resource allocation information having different modulation levels from at least one of a size, a repetition coding indication of resource allocation information having different modulation levels, and version information of resource allocation information having different modulation levels. Device characterized in that.

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