TWI643484B - Method for scheduling distributed virtual resource blocks - Google Patents

Abstract

A method for efficiently scheduling virtual resource blocks for an entity resource block is disclosed. In a wireless mobile communication system supporting a resource block group (RBG) configuration scheme, in order to uniformly map the continuously configured virtual resource blocks to the physical resource blocks, when the lengths of the physical resource blocks are different from the distributed virtual When the lengths of the resource blocks are different, an entropy method capable of increasing the number of scattered virtual resource blocks to a maximum while satisfying the gap limit is proposed. Similarly, the number of decentralized virtual resource blocks and the architecture of an interleaver are limited in order to be efficiently scheduled.

Description

Method for scheduling distributed virtual resource blocks

The present invention relates to a broadband wireless mobile communication system and, more particularly, to a radio resource schedule for uplink/downlink packet data transmission in a cellular OFDM wireless packet communication system.

In a cellular orthogonal frequency division multiplexing (OFDM) wireless packet communication system, uplink/downlink data packet transmission is achieved on a subframe basis, and a sub-frame consists of a complex number The specific time interval of the OFDM symbols is defined.

In a cellular orthogonal frequency division multiplexing (OFDM) wireless packet communication system, uplink/downlink packet data transmission is performed on a subframe basis and a subframe is comprised of complex OFDM symbols. A time interval is defined.

The 3rd Generation Partnership Project (3GPP) supports a Type 1 radio frame structure applicable to Frequency Division Duplex (FDD) and a Type 2 radio frame structure applicable to Time Division Duplex (TDD). The structure of the Type 1 radio frame is shown in Figure 1. The Type 1 radio frame includes ten sub-frames, each consisting of two time slots. A type 2 radio frame is shown in Figure 2. The Type 2 radio frame includes two half frames, each consisting of five subframes, a downlink pilot time slot (DwPTS), a gap period (GP), and an uplink pilot time slot (UpPTS). One of the sub-frames consists of two time slots. That is, regardless of the type of the radio frame, a sub-frame consists of two time slots.

A signal transmitted from each time slot can be described by a resource grid, which includes Subcarrier and OFDM symbol. In this article, Indicates the number of resource blocks (RBs) in the downlink, Representing the number of subcarriers constituting an RB, and Indicates the number of OFDM symbols in the slot at the time of the link. The structure of this resource grid is shown in Figure 3.

RB is used to describe the mapping between certain physical channels and resource elements. The RBs can be divided into physical resource blocks (PRBs) and virtual resource blocks (VRBs). The mapping relationship between VRB and PRB can be described on the basis of a sub-frame. More specifically, it can be described in terms of the cells that make up a slot in one of the sub-frames. In addition, the mapping relationship between the VRB and the PRB can be described using one of the index between the VRB index and the index of the PRB. A detailed description of this relationship will be further provided in a specific embodiment of the invention.

a PRB system is used in a time domain Continuous OFDM symbols and in a frequency domain Continuous subcarrier definition. a PRB is therefore Resource component composition. PRB is in the frequency domain from 0 to The specified number of -1.

A VRB can have the same size as a PRB. There are two types of defined VRBs, the first type being a partial type and the second type being a distribution type. For each VRB type, a pair of VRBs have a single VRB index (hereinafter referred to as a "VRB number") and are configured on two slots of a subframe. In other words, belonging to a first time slot in the two time slots constituting a sub-frame VRB is assigned 0 to each Any index of -1, and belongs to one of the two time slots VRB is also assigned 0 to each Any index of -1.

An index corresponding to one of the specific virtual frequency bands VRB of the first time slot has the same value as an index of one of the specific virtual frequency bands corresponding to the second time slot. That is, it is assumed that a VRB corresponding to one of the i-th virtual frequency bands of the first time slot is represented by VRB1(i), and one VRB corresponding to one of the j-th virtual frequency bands of the second time slot is represented by VRB2 ( j) indicates that the index numbers of VRB1(i) and VRB2(j) are represented by index(VRB1(i)) and index(VRB2(j)), then index(VRB1(k))=index(VRB2) is established. (k)) Relationship (see Figure 4a).

Similarly, the index corresponding to one of the specific frequency bands PRB of one of the first time slots has the same value as the index of the PRB corresponding to one of the specific frequency bands of the second time slot. That is, it is assumed that a PRB corresponding to one of the i-th bands of the first time slot is represented by PRB1(i), and one of the j-bands corresponding to one of the second time slots is a PRB system by PRB2(j) Indicates that the index numbers of PRB1(i) and PRB2(j) are represented by index(PRB1(i)) and index(PRB2(j)), then index(PRB1(k))=index(PRB2(k) is established. ))) (see Figure 4b).

Some of the above VRBs are configured as local types and others are configured as distribution types. Hereinafter, a VRB configured as a local type will be referred to as a "Local Virtual Resource Block (LVRB)", and a VRB configured as a distribution type will be referred to as a "Distributed Virtual Resource Block (DVRB)".

The local VRB (LVRB) is directly mapped to the PRB and the index of the LVRB corresponds to the index of the PRB. In addition, the LVRB of an index i corresponds to the PRB of the index i. That is, an LVRB1 having an index i corresponds to PRB1 having a reference, and an LVRB2 having an index i corresponds to a PRB2 having an index i (see FIG. 5). In this case, it is assumed that the VRBs of FIG. 5 are all configured as LVRBs.

Distributed VRB (DVRB) may not be directly mapped to PRB. That is, the index of the DVRB can be mapped to the PRB after undergoing a series of processing.

First, the order of the sequences of consecutive indices of the DVRB can be inverted by a block interleaver. Herein, the sequence of consecutive indexes means that the index number is incremented by 1 starting with 0. A sequence of indices from the block interleaver output is sequentially mapped to a sequence of consecutive indices of PRB1 (see Figure 6). Assume that the VRBs in Figure 6 are all configured as DVRBs. Thereafter, the sequence of indices indexed from the block interleaver is cyclically offset by a predetermined number and sequentially sequenced through a cyclic offset index sequence to a sequence of consecutive indices of PRB2 (see Figure 7). Assume that the VRBs in Figure 7 are all configured as DVRBs. In this way, the PRB index and the DVRB index can be mapped through the two-time slot.

On the other hand, in the above procedure, a sequence of consecutive indices of the DVRB (not through the interleaver) can be sequentially mapped to the sequence of consecutive indices of PRB1. Additionally, the sequence of consecutive indices of the DVRB (not through the interleaver) may be sequentially mapped to the sequence of consecutive indices of PRB2 by a predetermined number of cyclic offsets and cyclically offset index sequences.

According to the above procedure of mapping DVRB to PRB, one of the same index i, PRB1(i) and PRB2(i), can be respectively mapped to one of DVRB1(m) having one index "m" and one having an index "n". DVRB2(n). For example, referring to Figures 6 and 7, a PRB1(1) and a PRB2(1) are respectively mapped to a DVRB1(6) and a DVRB2(9) having different indexes. A frequency diversity effect can be obtained based on the DVRB mapping scheme.

Assuming that the VRB(1) in multiple VRBs is configured as DVRB in Figure 8, if the methods in Figures 6 and 7 are used, LVRB cannot be assigned to a PRB2(6) and a PRB1 ( 9), although VRB has not been assigned to PRB2(6) and PRB1(9). The reason is as follows: According to the aforementioned LVRB enantiomy scheme, LVRB is mapped to PRB2(6) and PRB1(9) means that LVRB is also mapped to PRB1(6) and PRB2(9); however, PRB1(6) and PRB2(9) has been mapped by the aforementioned VRB1(1) and VRB2(1). In this way, we will be able to understand that the LVRB mapping will be limited by the results of the DVRB mapping. Therefore, there is a need to determine the DVRB mapping rules in consideration of the LVRB mapping.

In a broadband wireless mobile communication system using a multi-carrier, radio resources can be configured to each terminal having an LVRB and/or DVRB scheme. Information indicating which scheme is being used can be transmitted in a bitmap format. At the same time, the configuration of the radio resources for each terminal can be implemented in units of one RB. In this case, resources can be configured with a granularity of '1' RBs, but a large number of bit overheads are required to transmit the configuration information in a bitmap format. Alternatively, an RB group (RBG) of PRs of k consecutive indices (e.g., k = 3) may be defined and resources may be configured with a granularity of '1' RBGs. In this case, the RB configuration is not performed precisely, but has the advantage of reducing the extra load of the bit.

In this case, the LVRB can be mapped to a PRB based on an RBG. For example, a PRB with three consecutive indexes, one PRB1(i), PRB1(i+1), PRB1(i+2), PRB2(i), PRB2(i+1), and PRB2(i+2), An RBG is formed, and the LVRB can be mapped to the RBG in units of one RBG. However, it is assumed that one or more of PRB1(i), PRB1(i+1), PRB1(i+2), PRB2(i), PRB2(i+1), and PRB2(i+2) were previously used by DVRB. If it is mapped, then this RBG cannot be mapped by LVRB on an RBG basis. That is, the DVRB mapping rule limits the LVRB mapping of the RBG unit.

As described above, since the DVRB mapping rule affects the LVRB mapping, it is necessary to determine the DVRB mapping rule in consideration of the LVRB mapping.

[technical problem]

One of the objects of the present invention devised to solve the problem lies in a resource scheduling method that efficiently combines the scheduling of an FSS scheme and the scheduling of an FDS scheme.

[Technical Solutions]

The object of the present invention can be achieved by providing a method for supporting a resource configuration scheme (one of which includes a resource block group (RBG) including a contiguous entity resource block expressed by one bit) In a wireless mobile communication system, a resource block mapping method for decentralizing a continuously configured virtual resource block to an entity resource block, the method comprising at least the following steps: using a block interleaver to interleave an index of the virtual resource blocks, The virtual resource blocks are determined according to a resource indication value (RIV) indicating a starting index number of one of the virtual resource blocks and a length of one of the virtual resource blocks; and sequentially sequentially mapping the interleaved indexes to An index of the physical resource blocks on the first time slot of the sub-frame, the sub-frame includes the first time slot and a second time slot, and will translate the interleaving index by a distribution gap The index obtained by the method is sequentially mapped to the index of the physical resource blocks on the second time slot, wherein the gap is a contiguous entity resource side constituting the RBG The number (M _RBG) of the square.

When the order of the block interleaver is defined as the number of rows of the block interleaver (C=4), the number of columns (R) of the block interleaver can be filled as given in the expression (1) The number of zero values (N _null ) within the block interleaver can be as given in expression (2).

[Expression (1)]

Where M _RBG is the number of contiguous physical resource blocks constituting the RBG, and N _DVRB is the number of decentralized configuration virtual resource blocks.

[Expression (2)]

Where M _RBG is the number of contiguous physical resource blocks constituting the RBG, and N _DVRB is the number of decentralized configuration virtual resource blocks.

The order of the block interleaver can be equal to a diversity order (N _DivOrder ) determined by the distribution.

An index P _1,d of one of the physical resource blocks mapped to the index d on the first time slot when an index d of one of the distributed configuration virtual resource blocks is given An index P _2,d as expressed in equation (3), and one of the physical resource blocks mapped to the index d on the second time slot is represented by the expression (4) Given as usual. Here, R is the number of columns of the block interleaver, C is the number of rows of the block interleaver, N _DVRB is the number of resource blocks used for the distributed virtual resource blocks, and N _null is filled in the block interleaved The number of zero values in the device, and mod means a modulo operation.

[Expression (3)]

among them

among them

[Expression (4)]

Here, C may be equal to the order of the block interleaver.

When the index P _{1,d is} greater than N _DVRB /2, it may be p _1,d + N _PRB - N _DVRB , and when the index P _{2,d is} greater than N _DVRB /2, it may be p _2,d + N _PRB - N _DVRB . Here, N _DVRB is the number of physical resource blocks in the system.

When the number of the virtual resource blocks (N _DVRB ) is not a multiple of the order of the block interleaver, the interleaving step includes dividing the interleaver into groups of physical resource blocks (N _D ), one of which is virtual The resource blocks are mapped and the zero values are evenly distributed to the divided groups.

When the order of the block interleaver is the number of columns of the block interleaver, the groups respectively correspond to the block interleaver, and when the order of the block interleaver is the block interleaver In the case of numbers, each group corresponds to the row of the block interleaver.

In another aspect of the present invention, a wireless mobile communication system is provided in a support resource allocation scheme in which a resource block group (RBG) including contiguous physical resource blocks is represented by one bit. A resource block mapping method for uniformly mapping a virtual resource block to a physical resource block, the method comprising at least the following steps: using a block interleaver to interleave indexes of the virtual resource blocks, the virtual resource blocks Determining, according to a resource indication value (RIV) indicating a starting index number of one of the virtual resource blocks and a length of one of the virtual resource blocks; and sequentially mapping the interlaced indexes to a sub-frame An index of the physical resource blocks on the first time slot, the subframe includes the first time slot and a second time slot, and the index obtained by cyclically shifting the interleaved index by a distribution gap And sequentially indexing the indices of the physical resource blocks on the second time slot, wherein the distribution gap ( _Ngap ) is as given in expression (5).

Where M _RBG is the number of physical resource blocks constituting the RBG, and N _PRB is the number of physical resource blocks of the system.

When a zero value is allowed to be input to the block interleaver, the number of such decentralized configuration virtual resource blocks (N _DVRB ) is as given in expression (6).

[Expression (6)]

When an index d of one of the distributed configuration virtual resource blocks is given, an index P _1,d of the corresponding one of the physical resource blocks mapped to the index d on the first time slot is given _. When it is greater than N _DVRB /2, it may be p _1,d + N _PRB - N _DVRB , and one of the corresponding ones of the physical resource blocks mapped to the index d on the second time slot The index P _2,d may be p _2,d + N _PRB - N _DVRB when it is greater than N _DVRB /2.

In another aspect of the present invention, a wireless mobile communication system is provided in a support resource allocation scheme in which a resource block group (RBG) including contiguous physical resource blocks is represented by one bit. A resource block mapping method for uniformly mapping a virtual resource block to a physical resource block, the method at least comprising the steps of: detecting a number of starting indexes indicating one of the virtual resource blocks and the virtual resource blocks a length of resource indication value (RIV), and determining an index of the virtual resource blocks according to the detected resource indication value; and using a block interleaver to interleave the determined index of the virtual resource blocks and The virtual resource blocks are mapped to the physical resource blocks in a distributed manner, wherein the order of the block interleaver is equal to the diversity order (N _DivOrder ) determined by the distribution.

In another aspect of the present invention, a wireless mobile communication system is provided in a support resource allocation scheme in which a resource block group (RBG) including contiguous physical resource blocks is represented by one bit. A resource block mapping method for uniformly mapping a virtual resource block to a physical resource block, the method comprising at least the step of: indicating a number of starting indexes of one of the virtual resource blocks and one of the virtual resource blocks a length resource indicator value (RIV) to determine an index of the virtual resource blocks; and a block interleaver to interleave the determined indices of the virtual resource blocks and to map the virtual resource blocks to the same An entity resource block, wherein when the number of the virtual resource blocks (N _DVRB ) is not a multiple of the order of the block interleaver, the mapping step comprises dividing the interleaver into a number of physical resource blocks (N _D ) A group of virtual resource blocks is mapped and the zero values are evenly distributed to the divided groups.

When the order of the block interleaver is the number of columns of the block interleaver, the groups respectively correspond to the block interleaver, and when the order of the block interleaver is the block interleaver In the case of numbers, each group corresponds to the row of the block interleaver.

The control information may be one DCI transmitted through a PDCCH.

This gap can be a function of system bandwidth.

When the index p of one of the physical resource blocks is given, the interleaved index d _p1 mapped to the index p may be given as expressed in the expression (7) or the expression (8), and a pair The cyclic translation index d _p2 mapped to the index p can be as given in expression (9) or expression (10). Here, R is the number of columns of the block interleaver, C is the number of rows of the block interleaver, N _DVRB is the number of resource blocks used for the distributed virtual resource blocks, and mod means a modulo operation.

[Expression (7)]

among them

[Expression (8)]

among them

[Expression (9)]

among them

among them

[Expression (10)]

The diversity order (N _DivOrder ) can be a multiple of the number of physical resource blocks (N _D ) to which a virtual resource block is mapped.

When the number of the virtual resource blocks is greater than or equal to a predetermined threshold (M _th ), then the gap is zero.

The resource block mapping method can further include receiving information about the gap, the gap being determined by the received gap information.

In another aspect of the present invention, in a wireless mobile communication system supporting a RBG scheme and a sub-collection resource configuration scheme, a resource block mapping for uniformly mapping virtual resource blocks to physical resource blocks is provided. The method includes at least the steps of: receiving control information including resource block configuration information indicating a decentralized configuration of the virtual resource blocks, and receiving an index of the virtual resource feeds; and using a block interleaver Interleaving the indices of the virtual resource blocks, wherein the interleaving step prevents the virtual resources from being blocked until the index of the virtual resource blocks is mapped to all indexes of the physical resource blocks belonging to any of the plurality of RBG subsets The index of the block is mapped to an index of the physical resource blocks belonging to different ones of the RBG sub-sets.

The resource block mapping method may further include sequentially indexing the interlaced indexes to an index of the physical resource blocks on a first time slot of a subframe, the subframe including the first time slot and a second time slot, and an index obtained by shifting the interleaved index cycles by a distribution gap, sequentially mapping to an index of the physical resource blocks on the second time slot, wherein the distribution is determined The gap causes the virtual resource blocks mapped to the first time slot and the virtual resource blocks mapped to the second time slot to be included in the same subset.

The number of such virtual resource blocks (N _DVRB ) may be a multiple of the diversity order (N _DivOrder ) determined by the distribution.

The number of such virtual resource blocks (N _DVRB ) may be the number M _RBG of contiguous physical resource blocks constituting the _RBG .

The number of the virtual resource blocks (N _DVRB ) may be a multiple of a value obtained by multiplying the number of consecutive physical resource blocks (M _RBG ) constituting the RBG by a virtual resource block. The number (N _D ) is obtained.

The number of the virtual resource blocks (N _DVRB ) may be a multiple of a value that is mapped to the virtual resource block by multiplying the square of the number of consecutive physical resource blocks constituting the RBG (M _RBG ² ). Obtained by the number of physical resource blocks (N _D ).

The number of the virtual resource blocks (N _DVRB ) may be a common multiple of a value and the order (D) of the block interleaver by multiplying the number of consecutive physical resource blocks (M _RBG ) constituting the RBG. Obtained by the number (N _D ) of physical resource blocks to which a virtual resource block is mapped.

The order of the block interleaver (D) may be a multiple of the number (N _D ) of physical resource blocks to which a virtual resource block is mapped.

The number of the virtual resource blocks (N _DVRB ) may be a common multiple of a value and the order (D) of the block interleaver, the value being the square of the number of consecutive physical resource blocks constituting the RBG (M _RBG ² ) obtained by multiplying the number of physical resource blocks (N _D ) to which a virtual resource block is mapped.

The order of the block interleaver (D) may be a multiple of the number (N _D ) of physical resource blocks to which a virtual resource block is mapped.

The number of virtual resource blocks (N _DVRB ) may be a common multiple of two values, wherein a value is obtained by multiplying the order of the block interleaver (D) by the square of the number of consecutive physical resource blocks constituting the RBG (M) _RBG ² ) is obtained, and another value is obtained by multiplying the square of the number of consecutive physical resource blocks constituting the RBG (M _RBG ² ) by the number of physical resource blocks (N _D ) mapped to a virtual resource block. obtain.

The order of the block interleaver (D) may be a multiple of the number (N _D ) of physical resource blocks to which a virtual resource block is mapped.

The foregoing various aspects of the present invention can be applied to a base station and/or a mobile station. Assuming that the foregoing aspect of the present invention is applied to a mobile station, the resource block mapping method may further include receiving the action from the mobile station of the wireless mobile communication system before the step of interleaving or determining the index of the virtual resource block Resource Indicator Value (RIV).

[Advantageous effect]

According to the present invention, it is possible to efficiently combine an FSS scheme schedule and an FDS scheme schedule and simply implement a schedule information transmission method.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments embodiments The detailed description provided below with reference to the drawings is intended to be illustrative of the exemplary embodiments of the invention The detailed description includes specific details to provide a thorough understanding of the invention. However, those skilled in the art will appreciate that the invention can be practiced without the specific details. For example, the following description will be made around specific terms, but the invention is not limited thereto and other terms may be used to indicate the same meaning. In addition, the same reference numerals are used throughout the drawings to refer to the same parts.

It is assumed that one of the sub-frames is composed of a first time slot and a second time slot, and the index (PRB1(i)) represents the index of the PRB of the i-th frequency band of the first time slot, index (PRB2(j) ) represents the index of the PRB of the j-th frequency band of the second time slot, and establishes the relationship of the index (PRB1(k)) = (PRB2(k)), as described above. Similarly, the index (VRB1(i)) represents the index of the VRB of the i-th virtual frequency band of the first time slot, and the index (VRB2(j)) represents the index of the VRB of the j-th virtual frequency band of the second time slot. And establish the relationship of index (VRB1(k)) = (VRB2(k)). At the same time, VRB1 is mapped to PRB1, and VRB2 is mapped to PRB2. Similarly, VRBs are classified into DVRBs and LVRBs.

The rules for mapping LVRB1 to PRB1 and the rules for mapping LVRB2 to PRB2 are the same. However, the rules for mapping DVRB1 to PRB1 and the rules for mapping DVRB2 to PRB2 are different. That is, the DVRB is "divided" and mapped to the PRB.

In 3GPP, an RB is defined in units of one slot. However, in accordance with the detailed description of the present invention, an RB is defined in units of a sub-frame, and the RB is divided into N _D sub-RBs on a time axis, so that the DVRB mapping rule can be generated and described. For example, suppose that when N _D = 2, a PRB defined by a sub-frame is divided into a first sub-PRB and a second sub-PRB, and a VRB defined by a sub-frame is divided. Form a first sub-PRB and a second sub-PRB.

In this case, the first sub-PRB corresponds to the aforementioned PRB1, and the second sub-PRB corresponds to the aforementioned PRB2. Similarly, the first sub-VRB is mapped to the aforementioned VRB1, and the second sub-VRB corresponds to the aforementioned VRB2. Similarly, among the detailed description of the present invention and the 3GPP, the DVRB mapping rule for or obtaining a frequency effect is described on the basis of a sub-frame. Therefore, we will understand that all embodiments of the detailed description of the present invention are intended to include the concept of an RB mapping method in 3GPP.

Hereinafter, the terms used in the detailed description of this application are as defined below.

A "resource element (RE)" represents a minimum frequency-time unit in which the data of a control channel or a modulation symbol is mapped. As long as a signal is transmitted in an OFDM symbol through M subcarriers and N OFDM symbols are transmitted in a subframe, MxN REs are present in a subframe.

A "Real Resource Block (PRB)" represents a unit frequency-time resource for data transmission. In general, a PRB includes a plurality of consecutive REs in a frequency-time domain, and the complex PRBs are defined in a subframe.

A "virtual resource block (VRB)" represents a virtual unit resource for data transmission. In general, the number of REs included in a VRB is equal to the number of REs included in a PRB, and when data is transmitted, a VRB can be mapped to some areas of a PRB or a plurality of PRBs.

A "local virtual resource block (LVRB)" is a type of VRB. One LVRB is mapped to a PRB, and the PRB lines mapped by different LVRBs are not replicated. An LVRB can be interpreted as a PRB.

A "distributed virtual resource block (DVRB)" is another type of VRB. A DVRB is mapped to some of the REs in the complex PRB, and the REs mapped by different DVRBs are not duplicated.

"N _D " = "N _d " indicates the number of PRBs mapped by a DVRB. Figure 9 illustrates an example of a method for mapping DVRB and LVRB to PRB. In Fig. 9, N _D = 3. An arbitrary DVRB can be divided into three parts and the divided parts can be mapped to different PRBs respectively. At this point, the remainder of each PRB (not mapped by any DVRB) is mapped to the divided portion of another DVRB.

"N _PRB " indicates the number of PRBs in a system. Assuming that the frequency band of the system is divided, N _PRB may be the number of PRBs in the divided portion.

"N _LVRB " indicates the number of LVRBs available in the system.

"N _DVRB " indicates the number of DVRBs available in the system.

"N _{LVRB_UE} " indicates the maximum number of LVRBs configured to a User Equipment (UE).

"N _{DVRB_UE} " indicates the maximum number of _DVRBs configured to one UE.

"N _subset " indicates the number of subsets.

"N _DivOrder " represents the required diversity order in the system. Here, the diversity order is defined by the number of RBs that are not adjacent to each other.

Herein, "the number of RBs" means the number of RBs divided on one frequency axis. That is, even in the case where the RB can be divided by the time slot constituting a subframe, the "number of RBs" means the number of RBs divided on the frequency axis of the same slot.

Figure 9 shows an example of the definition of LVRB and DVRB. As can be seen from Figure 9, each RE of an LVRB is mapped one-to-one to each RE of a PRB. For example, an LVRB is mapped to a PRB0 (801). Conversely, a DVRB is divided into three parts and the parts are separately mapped to different PRBs. For example, a DVRB0 is divided into three parts and the divided parts are respectively mapped to a PRB1, PRB4, and PRB6. Similarly, a DVRB1 and a DVRB2 are each divided into three parts and the parts are mapped to the remaining resources of PRB1, PRB4 and PRB6. Although each DVRB is divided into three parts in this example, the present invention is not limited thereto. For example, each DVRB can be divided into two parts.

The transmission of downlink data from a base station to a specific terminal or uplink data transmission from a specific terminal to a base station is performed in one subframe by one or more VRBs. When the base station transmits data to a specific terminal, it must inform the terminal which VRB will be used for data transmission. In addition, in order to cause the specific terminal to transmit data, the base station must inform the terminal which VRB is allowed to use the data transmission.

The data transmission scheme can be broadly classified into a frequency diversity scheduling (FDS) scheme and a frequency selective scheduling (FSS) scheme. The FDS scheme is a scheme for obtaining a reception performance gain through frequency diversity, and the FSS scheme is a scheme for obtaining a reception performance gain through a frequency selection schedule.

In the FDS scheme, a transmission platform transmits a data packet through subcarriers widely distributed in a system frequency domain, so that symbols in the data packet may experience various radio channel fading. Therefore, improvements in reception performance are obtained by preventing the overall data packet from being subjected to unfavorable fading. Conversely, in the FSS scheme, the improvement in reception performance is obtained by transmitting data packets through one of the system frequency domains or the majority of the continuous frequency regions in the fading state in accordance with the demand. In a cellular OFDM wireless packet communication system, multiple terminals are present in a hive. At this time, because the radio channel conditions of the respective terminals have different characteristics, it is required to perform data transmission of the FDS scheme with respect to a certain terminal, and even perform data transmission of the FSS scheme with respect to a different terminal in a subframe. As a result, a detailed FDS transmission scheme and a detailed FSS transmission scheme must be designed such that the two schemes can be effectively multiplexed in a sub-frame. On the other hand, in the FSS scheme, a gain can be obtained by selectively using one of the bands favored by the UE in all available frequency bands. Conversely, in the FDS scheme, there is no good comparison for a particular frequency band, and it is not necessary to select and transmit a specific frequency band as long as a frequency interval of one diversity can be properly obtained. Therefore, prioritizing the frequency selection schedule of the FSS scheme when scheduling is advantageous for improving overall system performance.

In the FSS scheme, since the data is transmitted using subcarriers that are continuously connected in the frequency domain, it is preferable to use LVRB transmission. At this time, as long as the N _PRB PRB exists in a subframe and one of the maximum values of the N _LVRB LVRB is available in the system, the base station may transmit the bitmap information of the N _LVRB bit to each terminal to notify the Which LVRB transmission the terminal downlink data will pass through, or which LVRB the uplink data can transmit. That is, the bit map information of the N _LVRB bit (which is transmitted to each terminal to be the schedule information) indicates whether the data will be or can be transmitted through an _LVRB corresponding to the bit in the N _LVRB LVRB. The disadvantage of this scheme is that when the number N _LVRB becomes larger, the number of bits to be transmitted to each terminal becomes larger in proportion thereto.

On the other hand, if a terminal can be configured with only one set of connected RBs, the information of the configured RBs can be represented by the starting point of the RBs and the number thereof. This scheme is referred to as a "compact scheme" in this document.

Figure 10 is a view illustrating an example of a method for configuring a resource block by a compact scheme. In this case, as shown in FIG. 9, the length of the available RBs varies depending on the individual starting points, and the number of combinations for the RB configuration is finally N _LVRB (N _LVRB +1)/2. Therefore, the number of bits required for combination is "ceiling(log2(N _LVRB (N _LVRB +1)/2)). In this context, ceiling(x) means rounding "x" up to a nearest integer . This method is advantageous in terms of a bitmap scheme because the number of bits does not increase significantly as the number of N _LVRBs increases.

On the other hand, for a method for notifying a DVRB configuration to a User Equipment (UE), it is necessary to predict in advance the location of the individual partitions of the DVRB for a diversity gain distributed transmission. Alternatively, additional information may be required to notify these locations directly. Preferably, if the number of bits used for the DVRB command is set equal to the number of bits in the LVRB transmission of the above stated compact scheme, the command bit format in the downlink can be simplified. As a result, there are advantages in that the same channel coding or the like can be used.

Herein, in the case where one UE is configured with a complex DVRB, the UE is notified of the DVRB index of one of the starting points of the DVRB, a length (=the number of configured DVRBs), and a relative position difference between the divided parts of the DVRBs. (eg, divide a gap between parts).

Figure 11 illustrates an example of a method for mapping two DVRBs to a contiguous PRB having consecutive indices.

As shown in FIG. 11, in the case where the complex DVRB having a continuous index is mapped to the complex connected PRB, the first divided portions 1101 and 1102 and the second divided portions 1103 and 1104 are separated from each other by a gap 1105. And the divided parts belonging to each of the upper divided portion and the lower divided portion are connected to each other, and thus the diversity order is 2.

Figure 12 illustrates an example of a method for mapping two DVRBs with consecutive indices to a complex spaced PRB. In this application, "separating PRB" means that the PRBs are not adjacent to each other.

In the method of FIG. 12, when the DVRB is allowed to correspond to the PRB, the continuous DVRB index may be allowed to be distributed without corresponding to the connected PRB. For example, a DVRB index "0" and a DVRB index "1" are not connected to each other. In other words, in Fig. 12, the DVRB index is configured in the order of 0, 8, 16, 4, 12, 20, ..., and this configuration can be input by, for example, inputting the continuous index in FIG. A block interleaver is obtained. In this case, distribution in the divided portions 1201 and 1202 and by a gap 1203 can be obtained. Therefore, when a UE is configured with two DVRBs as shown in FIG. 12, the diversity step is increased to 4, resulting in a diversity gain that still achieves more advantages.

At this time, the value indicating the gap of the relative position difference between the divided portions can be expressed by two methods. First, the gap value can be represented by a difference between the DVRB indices. Second, the gap value can be represented by a difference between the indices of the PRBs mapped by the DVRB. In the case of Fig. 12, the gap is = 1 in the first method and the gap = 3 in the second method. Figure 12 shows the latter case 1203. At the same time, if the total number of RBs of the system is changed, the DVRB index configuration can be changed accordingly. In this case, the use of the second method has the advantage of grasping a physical distance between the divided portions.

Figure 13 illustrates the case where a UE is configured with four DVRBs under the same rules as in Figure 12.

As seen from Figure 13, the diversity step is increased to 7. However, as the diversity order increases, the diversity gain converges. The results of the existing study show that when the diversity order is 4 or more, the increase in diversity gain is not important. The un-encoded portions of PRBs 1301, 1302, 1303, 1304, and 1305 can be configured and mapped to other UEs that use DVRBs, however, such un-escaped portions cannot be configured and mapped to another UE using LVRBs. Therefore, when no other UEs use the DVRB, there is an advantage in that the unpaired portions of the PRBs 1301, 1302, 1303, 1304, and 1305 have to remain in an empty, unused state. In addition, the distributed configuration of the DVRB breaks the continuity of the available PRBs, causing limitations on configuring continuous LVRBs.

As a result, there is a need to limit the diversity order to an appropriate level in a way to achieve the distribution configuration.

The first embodiment and the second embodiment of the present invention relate to a method of setting the correlation distance between the divided portions of the DVRB mapped to the PRB to zero. In these specific embodiments, according to a scheme for mapping successive DVRB indexes to separate PRBs, when a plurality of DVRBs are configured to one UE, individual partitions of each DVRB may be distributedly configured to different PRBs, Thereby raising the diversity step. Alternatively, under the same conditions, the individual partitions of each DVRB can be configured to the same PRB without being distributedly configured to different PRBs. In this case, it is possible to reduce the number of PRBs to the number of DVRBs that are distributed, so that the diversity order can be limited.

<Specific Example 1>

This embodiment relates to a method for switching a divided portion to a distributed/non-scattered mode by setting a reference value of the number of DVRBs configured to a UE. Here, the "distributed mode" relates to a mode in which the gap between the bits of the divided DVRB is not 0, and the "non-dispersive mode" is related to a mode in which the gap between the bits of the divided DVRB is 0.

Assume that the number of DVRBs configured to one UE is M. When M is less than a specific reference value (= M _th), the divided part of each DVRB dispersing disposed, thereby to enhance the diversity order.

Conversely, when the M system is larger than a specific reference value (=M _th ), the divided portions of the respective DVRBs are configured to the same PRB instead of being distributedly arranged. Configuring the partitions to the same PRB can reduce the number of PRBs, where the DVRBs are scatteredly mapped, so the diversity order can be limited.

That is, assuming that M is greater than or equal to the reference value M _th , a gap, which is a relative distance between the divided portions of the DVRBs mapped to the PRB, is set to zero.

For example, if the number of DVRBs is 2 under the condition of M _th = 3, the divided portions of the respective DVRBs may be dispersedly mapped as shown in FIG. Conversely, if the number of DVRBs is 4 under the condition of M _th = 3, a gap is set to 0 so that the divided portions of the respective DVRBs can be mapped to the same PRB.

Figure 14 illustrates an example of a resource block mapping method in the case of Gap = 0 according to Concrete Embodiment 1.

<Specific Embodiment 2>

This particular embodiment is directed to a method of switching a divided portion to a dispersed/non-dispersed mode using a control signal. Here, the "distributed mode" relates to a mode in which the gap between the bits of the divided DVRB is not 0, and the "non-dispersive mode" is related to a mode in which the gap between the bits of the divided DVRB is 0.

The specific embodiment 2 is a modified version of the specific embodiment 1. Example 2 In this particular embodiment, M _th is not set, and the like as desired, a control signal is transmitted and received to switch divided parts to the dispersion / non-distributed mode. In response to the transmitted and received control signals, the divided DVRB portions may be dispersed to increase the diversity order or to correspond to the same PRB to reduce the diversity order.

For example, the control signal can be defined to indicate a value of a gap that is a relative distance between the divided portions of the DVRBs that are mapped to the PRB. That is, the control signal can be defined to indicate the gap value itself.

For example, assuming that the control signal indicates Gap = 3, the divided DVRB portion is uniformly mapped as shown in Fig. 12 or 13. Similarly, assuming that the control signal indicates Gap=0, the divided DVRB portion corresponds to the same PRB as shown in FIG.

As previously stated, in order to be able to freely schedule the number of _PRBs N _PRB in a PRB-based system, it is necessary to transmit an N _PRB bit bitmap to each UE to be scheduled. When the number of PRBs N _PRB in the system is large, the additional load of control information is increased for the transmission of the N _PRB bit map. Therefore, a method for scaling down a schedule unit or dividing the overall frequency band and performing transmission in different scheduling units only in certain frequency bands can be considered.

In 3GPP LTE, when the bitmap is transmitted as described above, a bitmap configuration scheme has been proposed in consideration of an extra load.

Figure 15 illustrates a little array configuration

The signal of a resource configuration is composed of a header 1501 and a dot matrix 1502. The header 1501 indicates the architecture of the transmitted bitmap image 1502 by indicating a signal scheme, that is, a bitmap scheme.

The bitmap scheme is classified into two types, an RBG scheme and a sub-set scheme.

In this RBG scheme, RBs are grouped into a plurality of groups. RBs are mapped in units of one group. That is, a plurality of RBs form a group with an affinity for mapping. When the size of the group becomes large, it is difficult to perform resource allocation in a moment, but it is possible to reduce the number of bits of a dot map. Referring to Fig. 15, since NPRB = 32, a total of 32-bit bitmaps is required as a resource configuration of one RB unit. However, provided that three RBs are grouped (P=3) and resources are configured on a RBG basis, all RBs can be divided into a total of 11 groups. In this way, only 11-bit bitmaps are needed, which can significantly reduce the amount of control information. Conversely, assuming resources are configured on this RBG basis, they cannot be configured in units of one RB, so that they cannot be configured in a moment.

In order to compensate for this, a sub-set scheme was used. In this scheme, a plurality of RBGs are set as a subset, and resources are configured in each subset according to an RB basis. In order to use the 11-bit bitmap in the above RBG scheme of Fig. 15, it is possible to set '3' sub-collections (sub-set 1, sub-set 2, and sub-set 3). Here, '3' is the number of RBs constituting each of the above RBGs. In this way, N _RB /P=ceiling(32/3)=11, so that RBs in each subset can be configured with 11 bits on the basis of the RB. Here, the header information 1501 is required to indicate which of the RBG scheme and the subset scheme is used for the bitmap, and which subset to use if the subset scheme is used.

If the header information 1501 indicates only which of the RBG scheme and the subset scheme is used and some bits of the bitmap for the RBG are used to indicate the subset type, then in all subsets All RBs will not be used. For example, referring to Fig. 15, since a total of three sub-sets are set, a 2-bit sub-set indicator 1503 is required to identify the sub-sets. At this time, a total of 12 RBs are assigned to the subset 1504 or 1505, and if the 2-bit sub-set indicator 1503 is excluded from the bitmap, only 9 bits remain in the total 11-bit bitmap. . It is impossible to individually indicate all 12 RBs with 9 bits. To address this issue, one of the bits of the RBG bitmap can be dispatched as a translation indicator 1506 such that it can be used to translate the position of an RB indicated by the subset bitmap. For example, assuming that the subset indicator 1503 indicates the subset 1 and the translation indicator 1506 indicates "translation 0", the remaining 8 bits of the bitmap are used to indicate RB0, RB1, RB2, RB9, RB10, RB11, RB18, and RB19 (see 1504). On the other hand, assuming that the subset indicator 1503 indicates the subset 1 and the translation indicator 1506 indicates "Pan 1", the remaining 8 bits of the bitmap are used to indicate RB10, RB11, RB18, RB19. , RB20, RB27, RB28, and RB29 (see 1505).

Although the sub-collection indicator 1503 has been described in the above example to indicate the sub-set 1 1504 or 1505, it may also indicate the sub-set 2 or sub-set 3. Accordingly, with respect to each combination of the subset indicator 1503 and the pan indicator 1506, it can be seen that eight RBs can be mapped in units of one RB. Similarly, referring to Fig. 15, in the present embodiment, the number of RBs assigned to sub-set 1, sub-set 2, and sub-set 3 are respectively different numbers 12, 11, and 9. Accordingly, it can be seen that four RBs cannot be used in the case of sub-set 1, three RBs cannot be used in the case of sub-set 2, and one RB cannot be used in the case of sub-set 3 (see shadow) region). Fig. 15 is for illustrative purposes only, and the specific embodiment is not limited thereto.

It can be considered to use the RBG scheme and the sub-collection scheme as well as the compact scheme as a combination of the bitmap schemes.

Figure 16 illustrates an example of an mapping method based on a combination of the bitmap scheme and the compact scheme.

It is assumed that the DVRB is mapped and transmitted as shown in Fig. 16, and some resource elements of RBG0, RBG1, RBG2, and RBG4 are filled by the DVRBs. The RBG0 therein is included in a subset 1, the RBG1 and RBG4 are included in a subset 2, and the RBG2 is included in a subset 3. At this time, it is impossible to configure RBG0, RBG1, RBG2, and RBG4 to the UE in the RBG scheme. Similarly, the RBs (PRB0, PRB4, PRB8, and PRB12) within the RBG that are left after being assigned to the DVRB must be configured for the UE within the RBG scheme. However, since one UE configured in a sub-set scheme can be only one RB within a subset, the remaining RBs belonging to other subsets have to be configured to other different UEs. As a result, LVRB schedules are limited by DVRB scheduling.

Therefore, there is a need for a DVRB configuration method that can reduce the limitations in LVRB scheduling.

The third to fifth embodiments of the present invention relate to a method for setting a relative distance between divided portions of a DVRB mapped to a PRB to reduce the effect on the LVRB.

<Specific Example 3>

The specific embodiment 3 is a method for mapping the divided portions to all the RBs after mapping the divided portions to the specific portions of the DVRB. The RBs of the subset are then mapped to the RBs belonging to the other subsets.

According to this particular embodiment, when consecutive DVRB indices are mapped to decentralized PRBs, they can be decentralized to be mapped within a subset, and then when they can no longer be mapped within the subset, then To other sub-collections.

17 and 18 illustrate a DVRB mapping method in accordance with an embodiment of the present invention.

DVRB0 to DVRB11 are distributed correspondingly in a subset 1 (1703), then DVRB12 to DVRB22 are distributedly correspondingly within a subset 2 (1704), and DVRB23 to DVRB31 are discretely corresponding to a subset 3 ( 1705). This mapping step can be performed by a method using a block interleaver of each subset or by any other method.

This arrangement can be achieved by controlling a block interleaver operation scheme.

<Specific Example 4>

This specific embodiment 4 is a method for restricting the partitioning of portions into DVRBs included in the same subset.

In this embodiment 4, the gap information can be used to map the divided portions of the same DVRB within the same subset. At this time, a parameter for all PRBs, such as the aforementioned 'Gap', can be used. Alternatively, another parameter (Gap _subset ) for a subset can be used. This will be described in more detail later.

It is possible to use a method of discretely filling a continuous DVRB within a subset and a method of mapping the partitions of each DVRB within the same subset. In this case, preferably, Gap _subset , which means the difference between the number of PRBs in the same subset, can be used as information indicating the relative positional difference in dividing the DVRB portion. The meaning of the Gap _subset can be understood from Figure 17. The PRB lines PRB0, PRB1, PRB2, PRB9, PRB10, PRB11, PRB18, PRB19, PRB20, PRB27, PRB28 and PRB29 are included in the subset 1. Here, the PRB 18 is separated from the PRB0 in the subset 1 by 6 (Gap _subset = 6) indices. On the other hand, for all PRBs, the PRB 18 can be indicated to separate 18 (Gap = 18) indices from PRB0.

<Specific Example 5>

This specific embodiment 5 is a method for setting the relative distance between the divided DVRB sections to a multiple of the square of one RBG size.

Setting the GAP limit to a multiple of the RBG size as in this embodiment provides the following features. That is, when the relative distance between the divided DVRB sections is expressed as a relative position difference within a subset, it can be set to a multiple of the RBG size (P). Alternatively, when the relative distance between the divided DVRB sections is expressed as a positional difference with respect to all PRBs, it is limited to a multiple of the RBG size squared (P ² ).

For example, referring to Fig. 15, it can be seen that P = 3 and P ² = 9. Here, it can be seen in multiples of the first DVRB divided part relative distance based P (= 3) between 1701 and second divided parts 1702, because Gap _subset = 6, and P ² (= 9) because Gap multiple =18.

It is assumed that a scheme based on this specific embodiment is used, because only the RGB in which some resource elements are used will have the same probability of belonging to the same subset, and it is expected that unused resource elements or RBs will be left. Appear in the same subcollection. Therefore, it is possible to efficiently use the configuration of the sub-collection scheme.

Referring to Fig. 17, since the size of RBG 10 is 2, it is different from the size (= 3) of other RBGs. It is assumed that the RBG 10 will not be used for the DVRB for the convenience of DVRB index placement. Similarly, referring to FIGS. 17 and 18, a total of four RBGs including RBG 9 belong to sub-set 1, and a total of three RBGs excluding RBG 10 belong to sub-set 2, and a total of three RBGs belong to sub-set 3. Here, for the convenience of the DVRB index arrangement, the RBG 9 among the four RBGs belonging to the subset is not used for the DVRB. Therefore, a total of three RBGs per subset can be used for the DVRB.

Assume that the DVRB index can be sequentially mapped to a subset of DVRBs (e.g., sub-set 1) in multiple subsets, as shown in Figure 18. If the DVRBs can no longer be mapped to the subset, they can be mapped to the next subset (e.g., subset 2).

On the other hand, Fig. 11 shows that the DVRB index is continuously configured, but is discontinuously arranged in the 12th, 13, 14, 16, 17, and 18th views. In this manner, the DVRB index can be changed in a ranked manner before being mapped to the PRB index, and this change can be performed by a block interleaver. Hereinafter, the architecture of a block interleaver according to the present invention will be described.

<Specific Example 6>

Hereinafter, in accordance with an embodiment of the present invention, a method for setting an interleaver having a desired order equal to a diversity order will be described.

In detail, in a method of mapping a continuous DVRB index to a non-contiguous and decentralized PRB, a method of using a block interleaver and configuring the interleaver is proposed such that it has a target diversity order N _{DivOrder is} equal to the order. The order of the interleaver can be defined as follows.

That is, in a block interleaver having m columns and n rows, when data is written, its index is also sequentially increased. At this point, the write step is performed as follows: After one row is completely filled, the index of one row is incremented by one and the next row is filled. In each row, while the write step is being executed, a list of indexes is incremented. In order to read from the interleaver, the reading step is performed in such a way that after a column is completely read, one column of index is incremented by one and the next row is read. In this case, the interleaver can be considered as an m-th order interleaver.

Conversely, in a block interleaver having m columns and n rows, data writing can be performed in such a manner that after one column is filled, the processing proceeds to the next column, and the data reading can be performed. This is done in one of the following ways: After a row is read, the process proceeds to the next row. In this case, the interleaver can be regarded as an n-th order interleaver.

In detail, N _DivOrder is limited to a multiple of N _D . That is, N _DivOrder = K × N _D . Here, K is a positive integer. Similarly, the block interleaver of order N _DivOrder will be used.

Figure 19 illustrates that the number of RBs used for interleaving is N _DVRB = 24 and N _D = 2 and N _DivOrder = 2x3 = 6.

Referring to Fig. 19, in order to write to an interleaver, the index is sequentially increased while the data is being written. At this point, the write step is performed in such a way that after a row is completely filled, the index of one row is incremented by one and the next row is filled. In a row, the index is incremented while the write step is being executed. In order to read from the interleaver, the reading step is performed in such a manner that after a column is completely read, a column index is incremented by one and the next column is read. In a column, the index of one row is increased while the read is being executed. It is assumed that the read/write steps are performed in this manner, the order of the interleaver being the number of columns, which is set to the number of target diversity stages, that is, 6.

Assuming that the interleaver is set in this manner, the DVRB index order of the data sequence output from the interleaver can be used as the index step of the first partition of the _DVRB , and cyclically translated by N _DVRB /N _D The DVRB index step of the data sequence obtained by the output data sequence can be used as the index step of the remaining partition. As a result, the N _D partitions generated from the DVRB are only mapped to N _D PRB in pairs, and the difference between the pairs of DVRB indexes is K.

For example, in Fig. 19, N _DVRB /N _D =N _DVRB (=24) / N _D =24/2=12, and K=3. It can be seen from Fig. 19 that the DVRB index step 1901 of the data sequence output from the interleaver is given as "0 → 6 → 12 → 18 → 1 → 7 → 13 → 19 → 2 → 8 → 14 → 20 → 3 → 9 → 15 → 21 → 4 → 10 → 16 → 22 → 5 → 11 → 17 → 23”, and a sequence of data obtained by cyclically shifting the output data sequence by N _DVRB /N _D =12 The DVRB index step 1902 is given as "3 → 9 → 15 → 21 → 4 → 10 → 16 → 22 → 5 → 11 → 17 → 23 → 0 → 6 → 12 → 18 → 1 → 7 → 13 → 19 → 2 → 8 → 14 → 20”. Similarly, DVRBs are paired. Referring to 1903 of Fig. 19, for example, it can be seen that one DVRB0 and one DVRB3 are a pair. It can also be seen that individual combinations of the partitions generated from DVRB0 and DVRB3 are separately mapped to PRB0 and PRB12. This can be similarly applied to other DVRBs with other indexes.

According to this embodiment, it is possible to efficiently manage the relationship between the PRBs to which the DVRB and the DVRB are mapped.

<Specific Example 7>

Hereinafter, a method of filling a null in a rectangular interleaver will be described in accordance with an embodiment of the present invention.

As described below, the number of zero values filled in the reinterleaver can be expressed as "Nnull".

According to a specific embodiment 6, it is possible to completely fill the data in the interleaver because N _DVRB is a multiple of N _DivOrder . However, when N _DVRB is not a multiple of N _DivOrder , it is necessary to consider a zero-value filling method because it is impossible to completely fill the interleaver with data.

For cyclic translation via N _DVRB /N _D , N _DVRB should be a multiple of N _D . In order to completely fill the data with a rectangular interleaver, N _DVRB should be a multiple of N _DivOrder . However, when K>1, N _DVRB will not be a multiple of N _DivOrder , even if it is a multiple of N _D . In this case, in general, the data is sequentially filled with the block interleaver, and then the zero value is filled in the remaining space of the block interleaver. Thereafter, the reading is performed. If the data is filled line by line, the data is read column by column, or if the data is filled column by column, the data is read line by line. In this case, reading is not performed for zero values.

Figures 20a and 20b illustrate a general block interleaver operation when the number of RBs used for an interleaving operation is 22, that is, N _DVRB = 22, N _D = 2, and N _DVRB = 2x3 = 6, that is, when N _DVRB is not a multiple of N _DivOrder .

Referring to Fig. 20a, the index difference between the paired DVRBs has a random value. For example, DVRB pairs (0, 20), (6, 3), and (12, 9) (expressed as "2001" "2002" and "2003") have 20 (20-0=20), 3 (3- Index differences between 0=3) and 3(12-9=3). Accordingly, it can be seen that the index difference between the paired DVRBs is not fixed to a specific value. For this reason, the scheduling of the DVRB becomes complicated as compared with the case where the index difference between the paired DVRBs has a specific value.

Meanwhile, it is assumed that when N _DVRB is divided by N _DivOrder , N _REMAIN represents a remainder, and a plurality of components in a last row are filled with a zero value, except for the component corresponding to the N _REMAIN value, as shown in FIG. 20a or 20b. . For example, referring to Figure 20a, the two elements in the last row can be filled with zero values, except for four elements corresponding to four values, since the remainder is divided by N _DVRB (=22) by N _DivOrder (=6) Is 4 (N _REMAIN = 4). Although the zero values are filled from the trailing end in the above example, they may be located before a first index value. For example, the N _REMAIN value is filled into the component and can begin with the first component. Similarly, the zero values can be individually arranged at predetermined positions.

21a and 21b illustrate a zero value placement method in accordance with an embodiment of the present invention. Referring to Figures 21a and 21b, it can be seen that the zero values are evenly distributed in comparison with Figures 20a and 20b.

In this embodiment, when the zero value is about to be filled into a rectangular block interleaver, the N _DivOrder system corresponding to the order of the interleaver is divided into N _D groups, each of which has K Dimensions, and zero values are evenly distributed across all groups. For example, as shown in Fig. 21a, the interleaver can be divided into N _D (= 2) groups G2101 and G2102. In this case, K=3. A zero value is written to the first group G2101. Similarly, a zero value is written to the second group G2102. Therefore, the zero value is written in a distributed manner.

For example, the write step is performed in the following manner: the values are filled sequentially, and the N _REMAIN value is left. When the indices corresponding to the remaining values are arranged in the N _D groups such that they are evenly distributed, it is possible to evenly arrange the zero values. For example, in the case of Fig. 21, the N _REMAIN (=4) data space is left. When the indexes 18, 19, 20, and 21 corresponding to the data spaces are arranged in N _D (= 2) groups, so that they are evenly distributed, a zero value is uniformly arranged to It is possible in each group.

As such, the difference between pairs of DVRB indexes can be maintained at K or less (eg, K=3). Accordingly, there is an advantage in that a more efficient DVRB configuration can be achieved.

<Specific Example 8>

Hereinafter, a method of setting a relative distance between divided portions of respective DVRBs mapped to PRBs to 0 will be described in accordance with an embodiment of the present invention.

Figure 22 illustrates a method for mapping an interlaced interleaved DVRB index with a Gap = 0, in accordance with an embodiment of the present invention.

At the same time, the M DVRBs are configured to a UE according to a scheme for mapping consecutive DVRB indexes to non-contiguous distributed PRBs, and the reference value M _{th of} M can be set. Based on the reference value, the divided portions of the respective DVRBs can be separately distributed to different PRBs to enhance the diversity order. Alternatively, the partitions of each DVRB can be assigned to the same PRB without being distributed to different PRBs. In this case, it is possible to reduce the number of PRBs in which the DVRBs are scatteredly mapped and thus limit the diversity order.

That is, the method is a method of distributing the division of each DVRB to increase the division order when M is smaller than a specific reference value (=M _th ), wherein when M is not smaller than the specific reference value (=M _th When a partition of each DVRB is assigned to the same PRB that is not distributed, the number of PRBs is reduced, wherein the DVRB is dispersedly mapped, and thus the diversity order is limited.

That is, in this scheme, a DVRB index of a data sequence output from the interleaver is applied in common to all divided portions of each DVRB so that they can be mapped to the PRB as shown in FIG. For example, referring to Fig. 9, the DVRB index of the data sequence output from the interleaver has "0 → 6 → 12 → 18 → 1 → 7 → 13 → 19 → 2 → 8 → 14 → 20 → 3 → 9 → 15 → 21 → 4 → 10 → 16 → 22 → 5 → 11 → 17 → 23”. In this case, each data sequence DVRB index is commonly applied to the first and second divided portions 2201 and 2202 of each DVRB.

<Specific Example 9>

Hereinafter, a method of using both of the above-described specific embodiments 6 and 8 will be described in accordance with a specific embodiment of the present invention.

Figure 23 illustrates the following scenario: UE1 controlled by a scheduling step in accordance with a scheme of mapping individual divisions of each DVRB to different PRBs (as shown in Figure 19); The UE2 is controlled by a scheduling step in which the two UEs are simultaneously multiplexed according to a scheme of mapping the divided portions of the DVRBs to the same PRB (as shown in FIG. 22). That is, Fig. 23 illustrates a case where UE1 and UE2 are separately scheduled in accordance with the methods of the specific embodiments 6 and 8, respectively.

For example, referring to FIG. 23, the UE 11 is configured to DVRB0, DVRB1, DVRB2, DVRB3, and DVRB4 (2301), wherein UE2 is configured to DVRB6, DVRB7, DVRB8, DVRB9, DVRB10, and DVRB11 (2302). However, UE1 schedules in this manner: the divided parts of each DVRB are respectively mapped to different PRBs, and UE2 schedules in the following manner: the divided parts of each DVRB are mapped to the same PRB. Accordingly, the PRBs for UE1 and UE2 include PRB0, PRB1, PRB4, PRB5, PRB8, PRB9, PRB12, PRB13, PRB16, PRB17, PRB20, and PRB21, as shown by 2303 in FIG. However, in this case, PRB8 and PRB20 are partially used.

The divided parts of each DVRB are respectively mapped to the decentralized PRB, and the difference between the paired DVRB indexes is limited to the K value or lower. Accordingly, this scheme has no influence on DVRBs that are separated from each other by a gap greater than K. Accordingly, it is possible to easily distinguish an index that can be used for "the case where the divided portions of the respective DVRBs are mapped to the same PRB" from the unavailable index.

<Specific Example 10>

Hereinafter, a method of limiting an N _DVRB to avoid generating a zero value will be described in accordance with an embodiment of the present invention.

Referring again to Fig. 20, it can be seen that the difference between the DVRB indices paired with the PRB cannot be fixed to a specific value. In order to reduce the DVRB index difference to a specific value or lower, the method of Fig. 21 as described above can be used.

When the method of Fig. 21 is used to distribute zero values, the complexity of the interleaver increases due to the processing of zero values. In order to avoid this phenomenon, a method of limiting N _DVRB so that no zero value is generated can be taken into consideration.

In the interleaver, the number of RBs for the DVRB, i.e., N _DVRB , is limited to a multiple of the diversity order, i.e., N _DivOrder , such that no zero value is filled into the rectangular matrix of the interleaver.

In the block interleaver of the D stage, when the number of RBs for the DVRB, that is, N _DVRB , is limited to a multiple of D, no zero value is filled into the rectangular matrix of the interleaver.

Thereafter, when K = 2 and N _D = 2, several specific embodiments using an interleaver will be described in accordance with the present invention. The relationship between the DVRB and the PRB index can be represented by a mathematical expression.

Figure 24 is an overview of the relationship between the DVRB and the PRB index.

The parameters used in the mathematical expression can be understood with reference to the following description of Fig. 24.

: PRB Index ( )

: DVRB Index ( )

: index of the first time slot of PRB, where a given DVRB index Be mapped

: index of the second time slot of PRB, where a given DVRB index Be mapped

: Includes a given PRB index DVRB index of the first time slot

: Includes a given PRB index DVRB index of the second time slot

The constants used to represent Equations 1 through 11 (which represent the relationship between the DVRB and the PRB index) are as follows.

: Number of block interleavers

: Number of block interleavers

: Number of RBs for DVRB

: Number of PRBs in System Bandwidth

Figure 25 is an overview of the above constants.

When K = 2, N _D = 2, and N _DVRB is a multiple of C , the relationship between the PRB and DVRB indices can be derived using Expressions 1 through 3. First, if a PRB index P is given , a DVRB index can be derived using Expression 1 or 2. In the following description, "mod(x, y)" means "x mod y", and "mod" means a modulo operation. Similarly," "meaning a decrement operation, and represents that the largest of the integers will be equal to or less than one in" "The number expressed in the middle. On the other hand," "meaning an incremental operation, and represents the smallest of the integers will be equal to or greater than one in" Similarly, "round(·)" represents an integer that is closest to being represented in "()". "min(x,y)" represents a value not greater than between x and y, where " Max(x, y)" represents a value not less than between x and y.

[Expression 1]

among them

[Expression 2]

On the other hand, when Yes Multiples when given a DVRB index , then Expression 3 can be used to derive a PRB index.

[Expression 3]

Section 25b illustrates a general method for filling zero values into an interleaver. This method is applied when K = 2, N _D = 2, and Yes In the case of multiples. The method of Figure 25b is similar to the method of Figures 20a and 20b. According to the method of Fig. 25b, if the PRB index p is given , the expression 4 can be used to derive a DVRB index.

[Expression 4]

among them

among them

among them

On the other hand, if given a DVRB index , you can use Expression 5 to derive a PRB index.

[Expression 5]

among them

<Specific Example 11>

Figure 25c illustrates a method for filling a zero value into an interleaver in accordance with a particular embodiment of the present invention. This method is applied when K = 2, N _D = 2, and Yes In the case of multiples.

Figure 25c illustrates a method corresponding to the method of the specific embodiment 7 and the 20a and 20b drawings. The method of Fig. 25c can be explained using Expressions 6 through 8. According to the method of Fig. 25c, if the PRB index p is given , the expression 6 or 7 can be used to derive a DVRB index.

[Expression 6]

among them

among them

among them

[Expression 7]

among them

On the other hand, in the method of Figure 25c, if a DVRB index is given , then Expression 8 can be used to derive a PRB index.

[Expression 8]

among them

<Specific Example 12>

Figure 25d illustrates a method when K = 2, N _D = 2, and the size of the interleaver (= C x R) is set so that This was carried out using the methods of Specific Example 7 and Figs. 21a and 21b. Here, " N _null " represents the number of zero values to be included in the interleaver. This value N _null can be a predetermined value. According to this method, if a DVRB index is given , then a representation of 9 or 10 can be used to derive a PRB index.

[Expression 9]

among them

among them

[Expression 10]

among them

among them

among them

On the other hand, if given a DVRB index , then Expression 11 can be used to derive a PRB index.

[Expression 11]

among them

among them

Referring again to the description associated with Fig. 15, it is possible to consider the case where a combination of the dot pattern schemes using the RBG scheme and the sub-collection scheme and the compact scheme is used. Problems that may occur in this case will be described with reference to Figures 26 and 27.

Figures 26 and 27 illustrate a method of using a combination of bitmap schemes that use an RBG scheme and a subset scheme and a compact scheme, respectively.

As shown in Fig. 26, each DVRB can be divided into two parts, and the second part of the divided portion can be cyclically translated by a predetermined gap (Gap = N _DVRB / N _D = 50/2). In this case, only a part of the resource elements of RBG0 (which is composed of PRBs) will be mapped by the first DVRB partition, and only part of the resource elements of RBG8 and RBG9 (each composed of PRBs) will It is mapped by the second DVRB partition. For this reason, RBG0, RBG8, and RBG9 cannot be applied to a scheme of using resource allocation on an RBG basis.

To solve this problem, the gap can be set to a multiple of the number of RBs included in an RBG, that is, M _RBG . That is, the gap can satisfy the condition of "Gap = M _RBG *k" (k is a natural number). When the gap is set to satisfy this condition, it may have a value of, for example, 27 (Gap = M _RBG * k = 3 * 9 = 27). When Gap = 27, each DVRB can be divided into two parts, and the second part of the divided part can be cyclically translated by the gap (Gap = 27). In this case, only a part of the resource elements of RBG0 (which is composed of PRBs) will be mapped by the first DVRB partition, and only a part of the resource elements of RBG9 (which is composed of PRBs) will be The two DVRB partitions are mapped. Accordingly, according to the method of FIG. 27, the RBG 8 can be applied to a scheme of using a resource configuration on an RBG basis, which is different from the method of FIG.

However, according to the method of Fig. 27, the DVRB indexes paired in one PRB cannot be paired in another PRB. Referring again to Figure 26, pairs of DVRB indices 1 and 26 in PRB1 (2601) may also be paired in PRB 26 (2603). However, according to the method of Fig. 27, the paired DVRB indexes 1 and 27 in PRB1 (2701) cannot be paired in PRB25 or PRB27 (2703 or 2705).

In the case of Figure 26 or Figure 27, the DVRB1 and DVRB2 are mapped to PRB1, PRB2, PRB25 and PRB26. In this case, PRB1, PRB2, PRB25, and PRB26. A portion of the resource element will be left without being mapped.

In the case of Figure 26, if DVRB25 and DVRB26 are additionally mapped to the PRB, they will completely fill the remaining space of PRB1, PRB2, PRB25 and PRB26.

However, in the case of Fig. 27, if DVRB25 and DVRB26 are additionally mapped to PRB, DVRB25 and DVRB26 are mapped to PRB0, PRB25, PRB26 and PRB49. As a result, the unpaired resource element parts of PRB1 and PRB2 remain and are not filled by the DVRB. That is, the case of Fig. 27 has a disadvantage in that there is usually a case where the PRB remains without being mapped.

The problem occurs because the loop is translated so that a gap value does not equal N _DVRB /N _D . When N _DVRB /N _D is a multiple of M _RBG , the above problem is solved because the cyclic translation is mapped to a multiple of M _RBG .

<Specific Example 13>

In order to solve the problems of Figs. 26 and 27 at the same time, therefore, according to a specific embodiment of the present invention, the number of RBs for DVRB (i.e., DVRB) is limited to a multiple of N _D · M _RBG .

<Specific Example 14>

Meanwhile, it can be seen that, in the above case, the first and second divided parts of each DVRB belong to different subsets respectively. In order to make the two divided parts of each DVRB this it can belong to the same subset, the gap should be set to the square of M _RBG (M _RBG ^2).

Therefore, in another embodiment of the present invention, in order for the two divided portions of each DVRB to belong to the same subset and the DVRBs to be paired, the number of RBs for DVRB (ie, DVRB) is limited to N _D · A multiple of M _RBG ² .

Fig. 28 illustrates a case where N _DVRB is set to a multiple of N _D · M _RBG .

As shown in Fig. 28, the division of the DVRB can always be paired in the PRB according to a cyclic shift because the gap is a multiple of M _RBG · N _D . It is also possible to reduce the number of RBGs in which there are resource elements that are not filled by the DVRB.

<Specific Example 15>

Fig. 29 is a view showing a case where the method of interleaving the DVRB index is performed according to the method of Fig. 28.

When the DVRB index is interleaved as shown in Fig. 29, it is possible to set N _DVRB to a multiple of N _D · M _RBG when the DVRB index is mapped to the PRB. In this case, the DVRB index may be used to fill the rectangular interlace matrix incompletely, as shown in Figures 20a and 20b. Therefore, in this case, it is necessary to fill the zero value in the unfilled portion of the rectangular interleave matrix. In order to avoid the situation where it is necessary to fill the zero value in the block interleaver of order D, it is necessary to limit the number of RBs for the DVRB to a multiple of D.

Accordingly, in a specific embodiment of the present invention, the gap is set to a multiple of M _RBG , and the second partition of each DVRB is sequentially translated by N _RB /N _D so that the DVRB is mapped to a PRB. The index will be in pairs. Similarly, to avoid zero values being filled in the block interleaver, the number of RBs for the DVRB (i.e., N _DVRB ) is limited to a common multiple of N _D · M _RBG and D. If D is equal to the diversity order (N _DivOrder = K · N _D ) used in the interleaver in this case, N _DVRB is limited to a common multiple of N _D · M _RBG and K·N _D .

<Specific Example 16>

In another embodiment of the invention, the gap is set to a multiple of the M _RBG square in order for the two partitions of each DVRB to be in the same subset. Similarly, the second partition of each DVRB is sequentially shifted by N _RB /N _D such that the DVRB indices mapped to a PRB are paired. In order to avoid filling the zero value in the block interleaver, the number of RBs for the DVRB (i.e., N _DVRB ) is limited to a common multiple of N _D · M _RBG ² and D. If D is set to the diversity order (N _DivOrder = K · N _D ) in the interleaver in this case, N _DVRB is limited to a common multiple of N _D · M _RBG ² and K·N _D .

<Specific Example 17>

Meanwhile, Fig. 30 illustrates the case where D is set to the number of lines (i.e., C), and C is set to N _DivOrder (N _DivOrder = K·N _D ).

Of course, in the case of FIG. 30, the writing step is performed in such a manner that after one line is completely filled, the next line is filled, and the reading step is performed in the following manner: in one column After being completely read, the next column is read.

In the specific embodiment of Figure 30, N _{DVRB is} set such that consecutive DVRB indices are assigned to the same subset. When the number of columns is a multiple of M _RBG ² , the rectangular interleaver is set such that successive indices are filled in the same subset. Since the column number R is N _DVRB /D) (R = N _DVRB / D), the number of RBs for the DVRB (i.e., N _DVRB ) is limited to a multiple of D·M _RBG ² .

In order to map the two divided portions of each DVRB in the same subset to the PRB, the number of RBs for the DVRB (i.e., N _DVRB ) is limited to a common multiple of D·M _RBG ² and N _D ·M _RBG ² . When _{D = K · N D, N} DVRB is limited to ^{_{K · N D · M RBG 2}} , as K · N _D · M _RBG common multiple of ² and N _D · M _RBG ² is K · N _D · M _RBG ² .

Finally, the number of RBs used for the DVRB can be the maximum number of DVRBs that satisfy the above-described constraints within the number of PRBs in the overall system. The RBs for the DVRB can be used in an interleaved manner.

<Specific Example 18>

Hereinafter, according to an embodiment of the present invention, an mapping method using a temporary PRB index when N _PRB and N _DVRB have different lengths will be described.

Figure 31 illustrates that when N _PRB and N _DVRB have different lengths, the DVRB interleaver of Figure 29 is used to perform the mapping to the PRB, which is processed again so that the DVRB can finally correspond to the PRB.

One of the schemes shown in (a), (b), (c), and (d) in Fig. 31 can be selected according to the use of system resources. In this scheme, the value p is defined as a temporary PRB index in the above related expression of the DVRB and PRB indexes. In this case, after adding To And more than One of the values obtained after Used as a final PRB index.

In this case, four calibration schemes respectively illustrated in FIG. 31 can be represented by Expression 12.

[Expression 12]

(a): ,

(b): ,

(c): ,

(d): , or

Here, (a) represents a neat calibration, (b) represents a left calibration, (c) represents a right calibration, and (d) represents a central calibration. At the same time, if a PRB index is given A DVRB index d can be derived from Expression 13 using a temporary PRB index p .

[Expression 13]

On the other hand, if a DVRB index d is given , a PRB index It can be derived from Expression 14 using a temporary PRB index p .

[Expression 14]

<Specific Example 19>

Hereinafter, an _{entropy method} capable of increasing N _DVRB to a maximum while satisfying the gap limit will be described in accordance with an embodiment of the present invention.

Previous embodiments have proposed an interleaver architecture for reducing the number of PRBs with resource elements having portions that are not filled with DVRBs, where RBG schemes and/or sub-set schemes are imported for configuring LVRBs. The previous embodiment has also proposed a method of limiting the number of RBs used for DVRB (i.e., N _DVRB ).

However, when the constraints imposed by the M _RBG become more severe, the limit on the number of RBs for the DVRB (i.e., N _DVRB ) increases between the total number of PRBs (i.e., N _PRBs ).

Figure 32 illustrates the use of one with " = 32", the case of a rectangular interleaver with the condition "M _RBG = 3", "K = 2" and "N _D = 2".

When N _DVRB is set to a multiple of N _D ·M _RBG ² (=18), in order to enable the two partitions of each DVRB to be mapped to PRBs belonging to the same subset, and have no more than N _PRB ) The maximum value of this setting N _DVRB will be equal to 18 ( N _DVRB = 18).

In the case of Fig. 32, in order to enable the two partitions of each DVRB to be mapped to PRBs belonging to the same subset, N _DVRB is set to 18 ( N _DVRB = 18). In this case, 14 RBs (32-18=14) cannot be used for the DVRB.

In this case, the visible N _gap is 9 ( N _gap = 18/2 = 9), and the DVRB0 is mapped to the first RBs of RBG0 and RBG3 belonging to the same subset, respectively.

Accordingly, the present invention proposes a method of satisfying a gap constraint condition by setting an offset value (offset) and a threshold value (threshold) when N _D = 2, wherein the offset value will be as previously proposed It is applied without the gap limitation condition directly reflected on the N _DVRB .

1) First, set the desired gap limit conditions. For example, the gap may be set to a multiple of M _RBG or a multiple of M _RBG ^2.

2) Next, a number close to N _PRB /2 is set to N _gap between the numbers satisfying the gap restriction condition.

3) When N _gap is less than N _PRB /2, the same mapping as in Fig. 20 is used.

4) When N _gap is equal to or greater than N _PRB /2 and the zero value is filled in the interleaver is allowed, then N _DVRB is set such that N _DVRB = ( N _DVRB - N _gap ) · 2. However, when it is not allowed to fill the zero value in the interleaver, then N _DVRB is set so that .

5) An offset value is applied to half or more of the N _DVRB . That is, setting a reference value for the application of the offset value (ie, ), making .

6) Set the offset value so that the temporary PRB applied to the migration can meet the gap limit condition.

That is, setting Make .

This can be represented by the expression 15 and is taken as a general mathematical expression.

[Expression 15]

1. Set according to the gap condition :

in Under the condition of multiples:

in Under the condition of multiples:

2. Setting :

Under the condition that zero value is allowed:

Under the condition that zero value is not allowed:

3. Settings :

4. Settings :

Figure 33 illustrates when = 32, M _RBG = 3, and the application of the DVRB mapping rule proposed in the present invention when a rectangular interleaver of K = 2 and N _D = 2 is used.

When N _{gap is} set such that it is a multiple of M _RBG ² (=9) while approaching N _PRB /2, in order to separately map the two divided portions of each DVRB to PRBs belonging to the same subset, the setting N _gap is Equal to 18 ( N _gap = 18). In this case, 28 RBs ((32-18) x 2 = 28) are used for the DVRB. That is, you can create " N _DVRB = 28", " = 28/2 = 14" and " = 18–14 = 4”. Therefore, the temporary PRB index mapped to the DVRB index interleaved by the rectangular interleaver is Compare. when Be added to meet When the temporary PRB index is obtained, the result as shown in Fig. 33 is obtained. Referring to Figure 33, it can be seen that the second partition of DVRB0 is mapped to the individual first RBs of RBG0 and RBG6 belonging to the same subset. When this method is compared with the method of Fig. 32, it can also be seen that the number of RBs available for DVRB is increased from 18 to 28. As the gap also increases, the diversity in the DVRB mapping can be further increased.

<Specific embodiment 20>

Thereafter, in accordance with an embodiment of the present invention, an _{entropy method} capable of increasing N _DVRB to a maximum while mapping successive indices to a particular location will be described.

When the UE is configured to several DVRBs, the configured DVRBs are consecutive DVRBs. In this case, the setting index is a preferred embodiment is connected, such that they can be positioned spaced a multiple of M _RBG or a multiple of M _RBG ² impose the LVRB scheduling, similar to set this gap. When so assumed, in this case, the order of the interleaver is equal to the number of rows (i.e., C), and the number of columns (i.e., R) should be a multiple of M _RBG or a multiple of M _RBG ² . Accordingly, the size of the interleaver (ie, ), should be a multiple or Multiples. Therefore, if N _DVRB has been previously given, the minimum interleaver size that satisfies the above conditions can be derived as follows.

In the absence of multiples, .

In this case, therefore .

Under the condition of C·M _RBG multiple,

.

In this case, therefore

Under the condition of C·M _RBG ² multiple

In this case, therefore

.

The number of zero values included in the interleaver is as follows:

In the absence of multiples,

Under the condition of C·M _RBG multiple,

Under the condition of C·M _RBG ² multiple,

The above-described exemplary embodiments are a combination of the elements and features of the present invention. These elements or features may be considered selective unless otherwise mentioned. Each element or feature may be implemented without being combined with other elements or features. Furthermore, the specific embodiments of the present invention may be constructed by combining the elements and/or features. The order of operations described in the specific embodiments of the invention may be rearranged. Some configurations of any particular embodiment may be included within another specific embodiment and replaced with corresponding constructions of another specific embodiment. It is to be understood that the present invention may be embodied by a combination of the scope of the patent application, which is not in the scope of the appended claims, or may be modified by the application.

Particular embodiments of the invention may be implemented by various components, such as a hardware, a firmware, a soft body, or a combination thereof. In a hardware configuration, embodiments of the present invention may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices ( PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, etc.

In a firmware or software configuration, embodiments of the invention may be implemented by modules, programs, functions, etc., which perform the functions or operations described above. A software code can be stored in a memory unit and driven by a processor. The memory unit is internal or external to the processor and can transmit data to or receive from the processor via known components.

[Industry Utilization]

The present invention is applicable to a transmitter and a receiver used in a broadband wireless mobile communication system.

A person skilled in the art will appreciate that various modifications and changes can be made in the present invention without departing from the spirit or scope of the invention. Thus, the present invention is intended to cover the modifications and modifications of the invention

No component symbol

The accompanying drawings are included to provide a further understanding of the invention

In the schema:

Fig. 1 is a view showing an example of a radio frame structure applicable to FDD.

Fig. 2 is a view showing an example of a radio frame structure applicable to TDD.

Fig. 3 is a view showing an example of a resource lattice structure constituting a slot of a 3GPP transmission.

Figure 4a is a diagram showing an example of a VRB structure in a sub-frame.

Figure 4b shows a view of an example of a PRB structure in a subframe.

Figure 5 is a diagram illustrating an example of a method for mapping LVRB to PRB.

Figure 6 is a view showing an example of a method for mapping DVRB to PRB in the first time slot.

Figure 7 is a view showing an example of a method for mapping DVRB to PRB in the second time slot.

Figure 8 illustrates a view of an example of a method for mapping a DVRB to a PRB.

Figure 9 illustrates a view of an example of a method for mapping DVRBs and LVRBs to PRBs.

Figure 10 illustrates a view of an example of a method for configuring resource blocks by a compact scheme.

Figure 11 illustrates a view of an example of a method for mapping two DVRBs by successive indices to a plurality of connected PRBs.

Figure 12 illustrates a view of an example of a method for mapping two DVRBs to a plurality of spaced PRBs by successive indices.

Figure 13 illustrates a method for mapping a plurality of spaced PRBs by successively indexing four DVRBs.

Figure 14 is a diagram showing an example of a resource block mapping method in the case of Gap = 0, in accordance with an embodiment of the present invention.

Figure 15 is a view showing the configuration of a dot matrix.

Figure 16 illustrates a view of an example of a method of mapping based on a combination of a bitmap scheme and a compact scheme.

17 and 18 illustrate a view of a DVRB mapping method in accordance with an embodiment of the present invention.

Figure 19 illustrates a view of an example of a method for interleaving DVRB indexes.

Figures 20a and 20b illustrate views of the operation of a general interleaver when the number of resource blocks used for an interleaving operation is not a multiple of a diversity order.

21a and 21b are views illustrating a method of inserting a zero value when the number of resource blocks used for an interleaving operation is not a multiple of a diversity order, according to an embodiment of the present invention.

Figure 22 is a diagram illustrating a method of interleaving a DVRB index of a pair of Gap = 0, in accordance with an embodiment of the present invention.

Figure 23 illustrates a view of an example of a method of mapping DVRB indices using different gaps of different terminals.

Figure 24 is a view for explaining the relationship between the DVRB and the PRB index.

Figure 25a is a view for explaining the relationship between DVRB and PRB indexes.

Figure 25b illustrates a view of a general method of inserting zero values into an interleaver.

Figures 25c and 25d respectively illustrate views of an example of a method of inserting a zero value into an interleaver in one embodiment of the present invention.

Figures 26 and 27 illustrate a method of using a combination of bitmap schemes that use an RBG scheme and a subset scheme and a compact scheme, respectively.

Figure 28 illustrates a case where the number of DVRBs is set to a multiple of the number of physical resource blocks (PRBs) (N _D ) according to an embodiment of the present invention, wherein a virtual resource block is mapped to an entity resource block to constitute The number of contiguous physical resource blocks of an RBG is M _RBG .

Fig. 29 is a view for explaining a case when the DVRB indexes are interleaved according to the method of Fig. 28.

Figure 30 is a view illustrating an example of when the enantrating step is performed under the condition that the order of a block interleaver is set to the number of rows of the block interleaver, according to an embodiment of the present invention. That is, C), and C is set to a diversity order.

Figure 31 is a view showing an example of a pair of mapping method when the number of PRBs and the number of DVRBs are different from each other, according to an embodiment of the present invention.

32 and 33 are views showing an example of an embodiment of an enlarging method capable of increasing the number of DVRBs using a given gap, in accordance with an embodiment of the present invention.

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Claims (10)

A user equipment for receiving downlink data using a resource block in a wireless mobile communication system, the user equipment comprising: a data processing circuit configured to control an operation of the user equipment; and a receiver And coupled to the data processing circuit, and configured to receive downlink control information including a resource allocation information for the downlink data, and receive the mapping to the physical resource block according to the downlink control information (PRB) The downlink information, wherein: the resource allocation information indicates a virtual resource block (VRB) allocation for the user equipment; each resource block corresponds to a time slot; a PRB pair includes a first time slot An associated first PRB and a second PRB associated with a second time slot adjacent to the first time slot, wherein the first PRB and the second PRB are assigned to the same frequency index; a VRB pair a first VRB associated with a first time slot and a second VRB associated with a second time slot adjacent to the first time slot, wherein the first VRB and the second VRB are assigned to Same frequency index; There is a mapping relationship between the VRB pair and the PRB pair, and the frequency-contiguous VRB pair is mapped to the non-frequency continuous PRB pair, and each resource block is separated, so that the first resource of the resource block pair There is a frequency gap between the block and the second resource block; and the resource allocation information indicates that the frequency gap size is one of a first frequency gap size value and a second different frequency gap size value. The user equipment of claim 1, wherein the frequency gap is a relative distance between the first resource block of the PRB pair or the VRB pair and the second resource block. The user equipment of claim 1, wherein the first frequency gap size value is associated with a first condition, and the second frequency gap size value is associated with a different one second condition. The user equipment of claim 1, wherein the first frequency gap size value and the second frequency gap size value are obtained when a number of available PRBs for allocation exceeds a predetermined number. The user equipment of claim 1, wherein the frequency gap size is a multiple of one square of the number of consecutive PRBs in a resource block group. A method for receiving a user equipment of downlink data using a resource block in a wireless mobile communication system, the party The method includes the steps of: receiving downlink control information including a resource allocation information for the downlink data; and receiving the downlink mapped to an entity resource block (PRB) according to the downlink control information Data, wherein: the resource allocation information indicates a virtual resource block (VRB) allocation for the user equipment; each resource block corresponds to a time slot; and a PRB pair includes a first associated with a first time slot a PRB and a second PRB associated with a second time slot adjacent to the first time slot, wherein the first PRB and the second PRB are assigned to the same frequency index; a VRB pair includes a first time a first VRB associated with the slot and a second VRB associated with a second time slot adjacent to the first time slot, wherein the first VRB and the second VRB are assigned to the same frequency index; the presence of the VRB Pairing the pair with the PRB pair, and causing the consecutive VRB pairs to be mapped to the non-frequency continuous PRB pair, and separating each resource block, so that the first resource block of the resource block pair There is a second between the second resource blocks Frequency gap; The resource allocation information indicates that the frequency gap size is one of a first frequency gap size value and a second different frequency gap size value. The method of claim 6, wherein the frequency gap is a relative distance between the first resource block of the PRB pair or the VRB pair and the second resource block. The method of claim 6, wherein the first frequency gap size value is associated with a first condition and the second frequency gap size value is associated with a different one of the second conditions. The method of claim 6, wherein the first frequency gap size value and the second frequency gap size value are obtained when a number of available PRBs for allocation exceeds a predetermined number. The method of claim 6, wherein the frequency gap size is a multiple of one square of the number of consecutive PRBs in a resource block group.