WO2013066091A1

WO2013066091A1 - Method and apparatus for allocating resources for result of wireless signal transmission and transceiving the result

Info

Publication number: WO2013066091A1
Application number: PCT/KR2012/009152
Authority: WO
Inventors: 박경민
Original assignee: 주식회사 팬택
Priority date: 2011-11-04
Filing date: 2012-11-02
Publication date: 2013-05-10
Also published as: KR20130049456A

Abstract

The present invention relates to a method and an apparatus for allocating resources for the result of a wireless signal transmission and transceiving the result. The method for allocating resources for the result of a wireless signal transmission and transceiving the result according to one embodiment of the present invention enables a transmitting end that transceives a wireless signal to/from a plurality of user terminals to perform a step of transmitting a wireless signal including an extended PDCCH (E-PDCCH) indicating an uplink allocation of the user terminal to the user terminal; a step of receiving, from the user terminal, the wireless signal at the uplink resource allocated through the E-PDCCH; and a step of transmitting a received wireless signal verification result to the user terminal, wherein the verification result is included in a wireless resource calculable from the wireless resource including the E-PDCCH or in a wireless resource calculable from the information included in the E-PDCCH.

Description

Method and apparatus for allocating resources for wireless signal transmission result and transmitting and receiving the result

The present invention provides a method and apparatus for more efficiently allocating information indicating a transmission result between a user terminal and a base station to a radio resource and transmitting and receiving the same.

In the mobile communication system, the user terminal and the base station checks the received signal to confirm whether the transmission of the radio signal was performed without error, and transmits and receives the transmission result (ACK) (Acknowledge) / NACK (Negative Acknowledge) or N / Ack). And, it provides a mechanism (Hybrid Automatic Repeat reQuest, HARQ) to retransmit the error portion during the transmission process.

On the other hand, in the mobile communication system, the base station transmits the signal transmission result using some resources of the frequency bandwidth for transmitting the radio signal, and these resources are set in a manner previously promised with the user terminal. In order for the base station to provide a result of the transmission of the radio signal transmitted by the user terminal, the transmission result must be included in a resource of a location promised by the user terminal and the base station. However, when the number of user terminals increases, more radio resources including a transmission result to be provided to the user terminal are needed. Therefore, an increase in the user terminal or an increase in transmission results that should be provided to the user terminal in a limited radio resource is required. It is necessary to efficiently process and secure radio resources.

When the number of UEs simultaneously performing uplink transmission increases, more radio resources are needed to perform a HARQ process that provides a user terminal with a transmission result for the uplink transmission. Thus, HARQ resources, that is, PHICH resources are more efficiently. It is necessary to assign In this specification, for this purpose, the base station more efficiently allocates PHICH resources within a limited resource, so that PUSCH simultaneous transmission of multiple user terminals is supported.

According to an embodiment of the present disclosure, a method for allocating a resource for a wireless signal transmission result and transmitting the same may include transmitting uplink resource allocation information of a user terminal in a transmitting terminal for transmitting and receiving a wireless signal to a plurality of user terminals. Transmitting to the user terminal through an enhanced PDCCH (E-PDCCH), receiving a radio signal from the user terminal using an uplink resource allocated through the E-PDCCH, and verifying the received radio signal And transmitting to the user terminal, wherein the verification result is a PHICH (Physical Hybrid ARQ Indicator CHannel) resource that can be calculated from a radio resource including the E-PDCCH or a PHICH that can be calculated from information included in the E-PDCCH. It is characterized by being included in the resource.

In another aspect of the present disclosure, a method for receiving a resource for a wireless signal transmission result includes receiving, by a user terminal, uplink resource allocation information through an enhanced PDCCH (E-PDCCH) from a transmitting end; Physical Hybrid ARQ Indicator CHannel (PHICH), which is capable of calculating a radio signal using an uplink resource allocated through the E-PDCCH and calculating a verification result of the transmitted radio signal from a radio resource including the E-PDCCH. Receiving using a PHICH resource that can be calculated from resources or information included in the E-PDCCH.

In another embodiment of the present disclosure, an apparatus for allocating a resource for a radio signal transmission result and transmitting the same may include a uplink resource allocation information of a user terminal in a transmission terminal for transmitting and receiving a radio signal to a plurality of user terminals. E-PDCCH is allocated to a radio resource of a pre-computed index or E-PDCCH is included in the E-PDCCH so that an E-PDCCH indicates an index of a radio resource to transmit the uplink result. A resource allocation unit for generating a data transmission unit, a verifying unit for verifying a radio signal transmitted by the user terminal receiving the uplink resource allocation information, and the verification result to the user terminal through a PHICH (Physical Hybrid ARQ Indicator CHannel) resource; It includes a transceiver for receiving a signal from one or more user terminals.

An apparatus for receiving a resource for a radio signal transmission result according to another embodiment of the present specification receives uplink resource allocation information through an extended PDCCH (E-PDCCH) from a transmitter, and is allocated through the E-PDCCH. PHHY (Physical Hybrid ARQ) in a block index of a transceiver for transmitting a radio signal using a PUSCH (Physical Uplink Shared CHannel) resource for uplink and a block index of a radio resource including the E-PDCCH or information included in the E-PDCCH Indicator CHannel) includes a resource checking unit for calculating an index of a resource, wherein the transceiver unit receives a verification result of a radio signal transmitted from the PUSCH resource through the PHICH resource.

1, 2, and 3 are diagrams illustrating a data transmission and reception process in a Het-Net environment.

4 is a table illustrating a PHICH group and a sequence index according to an embodiment.

5 is a diagram illustrating an example in which index information on a PHICH resource is included in an E-PDCCH according to an embodiment of the present specification.

FIG. 6 illustrates an example in which only a part of index information indicating a PHICH resource is provided through an E-PDCCH according to an embodiment of the present specification.

FIG. 7 is a diagram illustrating a process of including all or part of information indicating a PHICH resource in an E-PDCCH according to one embodiment of the present specification.

FIG. 8 is a diagram for E-PDCCH scheduling according to another embodiment of the present disclosure to allow a UE to identify PHICH resources using the location of an E-PDCCH.

FIG. 9 illustrates a process of including all or part of information indicating a PHICH resource in an E-PDCCH according to another embodiment of the present specification.

FIG. 10 is a diagram for E-PDCCH scheduling according to another embodiment of the present disclosure to enable a UE to identify PHICH resources using the location of an E-PDCCH.

FIG. 11 is a diagram illustrating a process of allocating a resource for a radio signal transmission result and transmitting the same in a transmitting end such as a base station and an RRH according to an embodiment of the present specification.

12 is a diagram illustrating a process of receiving a radio signal transmission result after transmitting a radio signal after receiving uplink allocation from a transmitting end such as a base station and an RRH according to an embodiment of the present specification.

13 is a diagram illustrating a configuration of a base station according to an embodiment of the present specification.

14 is a diagram illustrating a configuration of a user terminal according to one embodiment of the present specification.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, the terms or words used in the specification and claims described below should not be construed as being limited to the ordinary or dictionary meanings, the inventors should use the concept of terms in order to explain their own invention in the best way. It should be interpreted as meanings and concepts corresponding to the technical idea of the present invention based on the principle that it can be properly defined.

In the current mobile communication systems such as 3GPP, Long Term Evolution (LTE), LTE-A (LTE Advanced), etc., it is a high-speed, high-capacity communication system that can transmit and receive various data such as video and wireless data beyond voice-oriented services. Not only is the development of technology capable of transmitting large amounts of data comparable to wired communication networks, but also the proper error detection method to improve system performance by minimizing the reduction of information loss and increasing system transmission efficiency has become an essential element. .

Meanwhile, a communication system using a multiple-input multiple-output antenna (hereinafter referred to as "MIMO") may be used at both the transmitting and receiving ends, and may be a single UE (SU) or multiple UEs. MUs share the same radio resource capacity and receive or transmit a signal to one base station or the like.

In a system using MIMO, it is necessary to identify a channel state using various reference signals or reference signals, and to feed back the result to a transmission terminal (another device).

That is, when a single terminal is assigned a plurality of downlink physical channels, the terminal can adaptively optimize the system by feeding back channel state information for each physical channel to the base station. Signals of Channel Status Information Reference Signals (CSI-RS), Channel Quality Indicator (CQI) and Precoding Matrix Index (PMI) may be used, and the base station may use such channel status related information. Channels can be scheduled. In addition, a cell-specific reference signal (CRS) transmitted in the entire downlink subframe is also transmitted by the base station to user terminals in the cell. Meanwhile, a sounding reference signal (SRS) and a demodulation reference signal (DM RS) for demodulation are signals transmitted by the user terminal to the base station. That is, the CSI-RS is transmitted by the base station, and the PMI and CQI are information reported by the terminal.

The wireless communication system is widely deployed to provide various communication services such as voice and packet data, and the wireless communication system controls the behavior of a base station such as a user equipment (UE), a base station (base station, BS, or eNB), and an RRH. It includes a subsidiary unit. A terminal in the present specification is a comprehensive concept that means a user terminal in wireless communication. In addition to UE (User Equipment) in WCDMA, LTE, and HSPA, as well as MS (Mobile Station), UT (User Terminal), SS in GSM It should be interpreted as a concept that includes a subscriber station, a wireless device, and the like.

A base station or a cell generally refers to a station that communicates with a terminal, and includes a Node-B, an evolved Node-B, an Sector, a Site, and a BTS. It may be called other terms such as a transceiver system, an access point, a relay node, and an RRH.

That is, in the present specification, a base station or a cell should be interpreted in a comprehensive sense indicating some areas or functions covered by a base station controller (BSC) in CDMA, a NodeB in WCDMA, an eNB or a sector (site) in LTE, and the like. It is meant to encompass various coverage areas such as megacell, macrocell, microcell, picocell, femtocell and relay node communication range.

In the present specification, the terminal and the base station are two transmitting and receiving entities used in implementing the technology or the technical idea described in the present specification and are used in a comprehensive sense and are not limited by the terms or words specifically referred to. The terminal 10 and the base station 20 are two (uplink or downlink) transmission and reception subjects used to implement the technology or the technical idea described in the present invention, which are used in a generic sense and are specifically referred to in terms or words. It is not limited by. Here, the uplink (Uplink, UL, or uplink) means a method for transmitting and receiving data to the base station 20 by the terminal 10, the downlink (Downlink, DL, or downlink) is the base station 20 By means of a method for transmitting and receiving data to the terminal 10 by.

There is no limitation on the multiple access scheme applied to the wireless communication system. Various multiple access techniques such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), OFDM-FDMA, OFDM-TDMA, OFDM-CDMA Can be used.

The uplink transmission and the downlink transmission may use a time division duplex (TDD) scheme that is transmitted using different times, or may use a frequency division duplex (FDD) scheme that is transmitted using different frequencies.

One embodiment of the present invention can be applied to resource allocation in the fields of asynchronous wireless communication evolving to LTE and LTE-advanced through GSM, WCDMA, HSPA, and synchronous wireless communication evolving to CDMA, CDMA-2000 and UMB. The present invention should not be construed as being limited or limited to a specific wireless communication field, but should be construed as including all technical fields to which the spirit of the present invention can be applied.

Meanwhile, in LTE, a standard is configured by configuring uplink and downlink based on one carrier or a pair of carriers. The uplink and downlink transmit control information through control channels such as Physical Downlink Control CHannel (PDCCH), Physical Control Format Indicator CHannel (PCFICH), Physical Hybrid ARQ Indicator CHannel (PHICH), and Physical Uplink Control CHannel (PUCCH). A data channel is configured such as PDSCH (Physical Downlink Shared CHannel), PUSCH (Physical Uplink Shared CHannel) and the like to transmit data.

According to embodiments of the present invention, the meaning of transmitting a control or data channel may be interpreted to mean that control information or data information included in a specific channel is transmitted in the form of a radio signal. Here, the control channel may be, for example, a physical downlink control channel (PDCCH) or a physical uplink control channel (PUCCH). The data channel may be a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH).

In LTE-A, a standard based on a single carrier in LTE is discussed, and a combination of several bands having a band smaller than 20 MHz is discussed, while a component carrier band having a band of 20 MHz or more is being discussed. In LTE-A, multi-carrier aggregation (hereinafter referred to as 'CA') is basically discussed in consideration of backward compatibility based on LTE's basic specifications. Up to five component carriers are considered in the link. Of course, the five component carriers can be increased or decreased according to the environment of the system, the present invention is not limited thereto. Hereinafter, the CC set refers to a set of two or more CCs configured for use in a corresponding system.

In CA, uplink ACK / NACK (ACKnowledgement / Negative ACKnowledgement) transmission, channel quality indicator (CQI), and precoding matrix indicators (PMI) are considered among various considerations related to control channel design. , Which is referred to as " PMI ") and RI (Rank Indicator (hereinafter, referred to as " RI ")).

LTE-A is basically considering backward compatibility of 3GPP LTE Rel-8 for the configuration of CA. CQI / PMI / RI information determined as a standard in LTE Rel-8 is performed by various methods through a physical uplink control channel (PUCCH) and a physical uplink shared channel (PUSCH) which are uplink control channels.

A wireless communication system to which an embodiment of the present specification is applied may support uplink and / or downlink HARQ.

On the other hand, when the number of user terminals in the base station increases, the control signal provided to the user terminal is increased, and the resource to which the control signal is transmitted also requires more. In an embodiment in which the number of user terminals is increased, the number of user terminals is gradually increased in a cell managed by the base station, and the number of user terminals is increased by using various multiplexing methods. In the latter case, a coordinated multi-point transmission / reception system or a coordinated multi-antenna transmission system in which two or more transmitters cooperate to transmit a signal , A cooperative multi-cell communication system (hereinafter referred to as "cooperative multi-cell communication system" or "CoMP"). In particular, in such a multi-cell communication system, various types of micros such as femto cells, pico cells, relays, hot spots, etc., located within a cell radius of one macro base station Or it may be local base stations (Remote Radio Head, hereinafter referred to as RRH). A network composed of various types of base stations is called a heterogenous network (hereinafter referred to as Het-Net).

Meanwhile, the data transmission and reception process in the Het-Net environment will be described in more detail with reference to FIGS. 1, 2, and 3. 1, 2, and 3, the macro base station will be described collectively as an eNB, and the micro or local base station will be described as RRH.

When a plurality of

RRHs

110, 120, 130, 140 and eNB 100 share the same cell ID, PUSCH transmission and corresponding PHICH transmission are performed in the following manner. The eNB 100 performs CRS and CSI-RS broadcasting, and each of the

RRHs

110, 120, 130, and 140 performs CSI-RS broadcasting. According to the configuration of the network, the RRH may also transmit the CRS, but in the case of FIG. 1, the CRS transmitted by the RRH is configured as part of the CRS transmitted by the eNB or configured in the same pattern. On the other hand, the CSI-RS transmitted by the RRH is broadcast through a different port than the CSI-RS transmitted by the eNB.

The eNB 100 may receive the SRS and other uplink signals transmitted by the user terminal and determine the location of each terminal or the channel state of the terminal, and set uplink of each terminal according to the identified information. (uplink configuration) can be configured. 2 is an example of the configuration. Each

UE

111, 121, 131, 132, and 141 attempts to transmit a PUSCH to the

RRHs

110, 120, 130, and 140, or attempts to transmit a PUSCH directly to the eNB 100 such as

UEs

101 and 102. Can be. In FIG. 2, the eNB 100 and the

RRHs

110, 120, 130, and 140 create an uplink connection with each terminal. The PUSCH is transmitted together with the DM RS, and each receiving end attempts to decode the PUSCH using the DM RS.

However, in the case of PHICH, each receiver performs channel estimation through the CRS and performs decoding using the estimated channel value. This means that channel estimation should be channel estimation, which means that the band where the CRS is provided and the band where the PHICH is provided must be the same, and therefore, the PHICH should be transmitted through a transmitter that performs CRS transmission. This means that, as shown in FIG. 3, the eNB 100 or all transmission terminals (eNB, RRH, etc.) performing CRS transmission should perform PHICH transmission for all UEs performing PUSCH transmission.

This is compared with the case of performing PHICH transmission only for a UE having a PUSCH connection (connection) directly to the eNB, the eNB should perform PHICH resource management (resource management or resource management) for more PUSCH transmission, which is PHICH This can be a significant burden on resources. In the following specification, resources and resources are used in the same sense and may be used interchangeably.

As shown in FIG. 2, in order to allow uplink transmission for a plurality of terminals, a plurality of uplink grants must be transmitted to the terminal, which is an E-PDCCH (Extended PDCCH, or X-PDCCH). It may not be possible without it.

That is, as shown in FIG. 3, an uplink grant is transmitted by a plurality of E-PDCCHs when a PHICH resource shortage or a PHICH collision problem occurs. In this specification, a method of allocating a PHICH resource using information such as using an E-PDCCH resource or receiving an E-PDCCH, a resource used for E-PDCCH transmission, and the like is provided.

First, the E-PDCCH will be briefly described. MIMO, CoMP, and Het-Net described above are technologies for improving the performance of a wireless communication system, and when these techniques are applied, more control information may be required. Therefore, resources of the control region may be insufficient to allocate a plurality of PDCCHs for transmitting control information. Here, the control region may mean a radio resource region including the PDCCH.

Therefore, increasing the efficiency of the existing control region may be considered as a method for increasing the maximum number of PDCCHs in the control region. The PDCCH existing in the existing control region may be newly defined and simply implemented, or a part of the data region including the PDSCH may be used for the control information. Thus, unlike the existing PDCCH configuration, the newly designed PDCCH for transmitting more PDCCH is referred to as E-PDCCH. The implementation manner of the E-PDCCH may vary, and the invention described herein is not limited to the implementation manner of a specific E-PDCCH.

Hereinafter, in the present specification, the PHICH resource allocation method using the legacy PDCCH (legacy-PDCCH) is different from the PHICH resource allocation method using the E-PDCCH, thereby increasing the allocation efficiency of the PHICH resource.

PHICH resource allocation of a user terminal using an existing PDCCH, that is, a PHICH resource for performing N / Ack transmission of a base station for a PUSCH transmitted by a user terminal is determined by a PHICH group and a PHICH sequence. Is determined. Each PHICH group is composed of eight orthogonal codes in the case of a subframe using a normal CP (cyclic prefix) and four orthogonal codes in the case of a subframe using an extended CP. Each cell determines the total amount of PHICH resources by selecting the number of PHICH groups, and performs PHICH resource management by selecting PHICH groups and PHICH sequences to deliver N / Ack to each UE.

For FDD systems, the number of PHICH groups is

In all subframes, the number of PHICH groups in a TDD system

In each subframe, a different size PHICH resource is used.

Is defined by Equation 1,

The value is determined according to the subframe number i and the uplink-downlink configuration, as indicated in Table 1. In Equation 1,

Is the number of resource blocks defined in the downlink band,

Has a value of {1/6, 1/2, 1, 2}, which is a factor shared between the terminal and the base station through high layer signaling.

[Equation 1]

TABLE 1

A PHICH resource that performs N / Ack reporting on a PUSCH is a PHICH group index calculated from a PHICH index of Equation 2 below.

) And PHICH Sequence Index,

) Is determined by the value (index).

[Equation 2]

The PHICH sequence index has a value of 0-7 or 0-3 according to the type of an orthogonal sequence, and may be applied as shown in Table 2 below.

TABLE 2

4, 25 resource blocks (RBs) are used in the uplink and the downlink.

when

And

Table of the PHICH group index and sequence index determined by the value.

As can be seen in Figure 4, in many cases different

And

The same PHICH resource may be designated by the value. Where PRB of vertical axis is

Where the horizontal axis is

Indicates. For example, the PHICH group index (

) Is 2, and the PHICH sequence index (

In the case of 1), there are a large number as indicated by the dotted-ellipse in FIG. 4, all of which are different from each other.

And

It is shown that the same PHICH group / sequence value may exist by value.

Accordingly, the base station may perform PUSCH scheduling for each user terminal that is allocated uplink by the PDCCH, avoiding the above case.

In the above formula,

Is a factor indicating the relative position occupied by N / Ack in a virtual resource block (VRB) allocated for PHICH transmission, and which physical resource is mapped to which physical resource is mapped According to the definition of the PHICH region (region).

As shown in FIG. 4, since the PHICH resource of the user terminal received uplink allocation through the PDCCH may be allocated the same PHICH resource even if different PUSCH resources are allocated, scheduling to adjust the PUSCH region is applied to avoid this. However, in the case of the E-PDCCH, since additional information can be extended and added to the E-PDCCH, it is not necessary to perform new scheduling of the PUSCH resource or to reduce the scope of such scheduling to a minimum, and indicate the PHICH resource directly or indirectly. Can be considered. In this case, there is an advantage that the PHICH resource can be allocated without changing the user terminal using the conventional PDCCH (PDCCH).

In the first embodiment, a direct indication of PHICH resources is provided, and a method of providing full index information on PHICH resources through an E-PDCCH will be described. To this end, the E-PDCCH may separately include a field indicating group information and sequence information, which are index information for PHICH resources.

5 is a diagram illustrating an example in which index information on a PHICH resource is included in an E-PDCCH according to an embodiment of the present specification. Two fields 510 and 520 may be included in the E-PDCCH region 500. The at least one field may be referred to as a PHICH indicator or indication information. First, the PHICH group index field 510 includes a group index value for the PHICH resource (

) Is included. Meanwhile, the PHICH sequence index field 520 has a sequence index value for the PHICH resource (

) Is included. Of these two fields, the sequence index field 520 may be calculated by using Equation 2 above. Accordingly, when the base station transmits an uplink allocation using one field 510 or two fields 510 and 520 of the E-PDCCH, the user terminal may use

Equation

3 or 3 by using each field of the received E-PDCCH. As shown in FIG. 4, PHICH resource indication information may be confirmed, and as a result, PHICH resource may be allocated.

[Equation 3]

In Equation 3, the value of the PHICH group index field 510 of FIG. 5 indicates,

Using the PHICH group index (

), And the value of the PHICH sequence index is the same as in Equation 3 in the same manner as in the PDCCH terminal.

The value can be calculated.

[Equation 4]

In Equation 4, as indicated by Equation 3, the value of the PHICH group index field 510 of FIG. 5 is indicated.

Using the PHICH group index (

) Value, indicated by the value of the PHICH sequence index field 520 of FIG.

Using PHICH sequence index (

) Value can be calculated.

The length of the PHICH group index field 510 should be able to indicate the maximum possible number of PHICH groups. Therefore, the length of the PHICH group index field 510 is

In the case of applying the values of Equations 1 and Ng to 2, it can be calculated as Equation 5.

[Equation 5]

That is, as shown in Equation 5, the size of the PHICH group index field 510 is determined according to the downlink bandwidth (or the number of RBs), which is determined by the maximum number of PHICH groups that can be set in a given downlink bandwidth. Is determined by

Therefore, applying Equation 5, if the downlink bandwidth (BW) is 5MHz and Normal CP, the size of the PHICH group index field (

) Is 3 bits, and if the downlink bandwidth (BW) is 10 MHz and Normal CP, the size of the PHICH group index field (

) Is 4 bits.

Meanwhile, as shown in Table 2, the length of the PHICH sequence index field 520 has a length of 3 bits in the case of Normal CP, which indicates 8 pieces of sequence information, and 4 cases in the case of Extended CP. Since the sequence information of must be indicated, the length is 2 bits.

Therefore, when both the PHICH group index field 510 and the PHICH sequence index field 520 are indicated in the E-PDCCH region, it may take up to 7 bits. However, the E-PDCCH is a part that considers various expansion possibilities, and the 7-bit data growth may have a better effect than scheduling of the PUSCH.

The user terminal may identify the PHICH resource to which the HARQ result for the uplink performance is applied by applying Equation 3 or Equation 4 using the value of the field included in the E-PDCCH indicating uplink allocation. .

As a second embodiment, a method of providing only a part of index information indicating a PHICH resource through an E-PDCCH will be described.

In the first embodiment, even when only the PHICH group index is transmitted, up to 4 bits of information may be transmitted. In contrast, as a method for reducing signaling overhead of E-PDCCH, PHICH is allocated to PHICH subgroups only for PUSCH triggered by E-PDCCH to allocate PHICH resource allocation. Consider how to do this. In this case, each UE recognizes a category of a PHICH group that can be allocated through high layer signaling, and can perform PHICH group allocation within the category.

For example, if the PHICH group is {0, 1, 2, 3, 4, 5, 6}, they are divided into subsets such as {0, 1, 2, 3} and {4, 5, 6}. And, through higher layer signaling, whether the PHICH subset allocated to each UE is {0, 1, 2, 3} or {4, 5, 6}

Can be indicated using. And the base station determines the value of the PHICH group subset index 610 of the E-PDCCH region 600 of FIG. 6.

It can be calculated by using the equation (6).

[Equation 6]

In the above formula

Is an index for the PHICH group to be allocated to each UE in the PHICH group subset allocated to each UE.

Is PHICH group indication information (or group offset) by higher layer signaling.

previously

If the corresponding PHICH subset is indicated as {0, 1, 2, 3} through, since the total number of possible PHICH groups is 4,

The length of, i.e., the length of the PHICH group subset index 610 of the E-PDCCH can be implemented in 2 bits. On the other hand, when the method of FIG. 5 is applied, the length of the PHICH group index 510 of the E-PDCCH may be implemented as 3 bits since it should be indicated among 7 PHICH groups.

In the case of the PHICH sequence, it may be calculated through Equation 2 or set through additional E-PDCCH signaling through the PHICH sequence index 620 as described above with reference to FIG. 5.

The scheme of FIG. 5 does not require higher layer signaling and can immediately apply a PHICH resource allocation mechanism, but the number of group indexes to be transmitted in the E-PDCCH is large. In contrast, the scheme of FIG. 6 performs higher layer signaling and has a small number of group indexes to be transmitted on the E-PDCCH. The higher layer signaling divides PHICH resources into subframes and performs PHICH resource allocation through E-PDCCH in each subframe, thereby reducing signaling overhead.

By using the value of the field included in the E-PDCCH indicating uplink allocation, the user terminal uses the subset information of the group received through Equation 6 and higher layer signaling, and the HARQ result for the uplink performance is obtained. The PHICH resource to be allocated can be identified.

5 and 6 illustrate a method of instructing allocation of PHICH resources using a region of the E-PDCCH.

In the third embodiment, a method of determining a PHICH resource by a resource block (RB) through which an E-PDCCH is transmitted will be described.

When the index value of the PRB (Physical Resource Block) through which the E-PDCCH is transmitted is called E _{PRB_RA} , the base station controls this value and the user terminal calculates group and sequence information for PHICH resource allocation as shown in Equation 7 below. Implement to do it.

[Equation 7]

According to Equation 7, it is possible to change the PHICH group indexing or PHICH sequence indexing, respectively. Therefore, PHICH resource allocation may be performed using both of the above equations, or PHICH resource allocation may be performed by mixing one of the equations and the existing one.

As another method, in calculating the PHICH group and the sequence as shown in Equation 8, it may be implemented to calculate by applying different parameters.

[Equation 8]

When applying the third embodiment, the base station performs scheduling of the E-PDCCH. This is because the PHICH group and sequence information are calculated using the PRB index through which the E-PDCCH is transmitted, as shown in

Equations

7, and 8. Accordingly, the E-PDCCH scheduling is performed like the PUSCH scheduling of the UE that receives the PDCCH, so that PHICH resource collision due to the same group / sequence does not occur. However, since E-PDCCH scheduling has less impact on network efficiency than PUSCH scheduling, overall system performance may be improved.

The user terminal uses the index E _{PRB_RA} of the physical resource block of the E-PDCCH indicating the uplink allocation and the index I _{PRB_RA} of the uplink allocated physical resource block, as shown in Equation 7 or Equation 8. The PHICH resource to which the HARQ result for the uplink performance may be allocated may be identified.

FIG. 7 illustrates uplink allocation by including all or part of information indicating a PHICH resource in an E-PDCCH according to an embodiment of the present specification, and when a user terminal performs uplink transmission thereafter, HARQ result Is a diagram illustrating a process of including a transmission in a downlink radio signal. The eNB of FIG. 7 becomes an embodiment of a base station, and the UE becomes an embodiment of a user terminal or a terminal.

The eNB 700 determines an uplink grant of a specific UE 701 (S710). When the uplink transmission (PUSCH) is indicated by the E-PDCCH, it is possible to determine a group and sequence value indicating the PHICH resource including the HARQ result for the uplink transmission (S720). . The E-PDCCH is generated to be included in a specific field of the E-PDCCH indicating the uplink allocation. As described above with reference to FIGS. 5 and 6, only the group value is included, the group / sequence value is included, or the PHICH group is divided into subsets, and the PHICH subset is notified in advance as shown in FIG. The method of indicating a group can be applied.

The eNB 700 transmits a downlink including the generated E-PDCCH (S740). The UE 701 knows that uplink allocation has been made through the E-PDCCH. In addition, information (group and / or sequence information) indicating a PHICH resource included in the E-PDCCH is extracted (S750). In operation S760, uplink transmission (PUSCH transmission) is performed on the allocated uplink resource.

When the PUSCH transmission is made, the eNB 700 proceeds with the HARQ process. That is, the eNB 700 proceeds the HARQ process with respect to the received uplink (PUSCH transmission) (S770), includes the HARQ process result in the PHICH resource determined in S720, and performs downlink transmission (S780, S790). Thereafter, the UE 701 checks the HARQ result included in the PHICH resource indicated in S750 among the received PHICH resources (S795), and determines whether to retransmit.

FIG. 8 performs E-PDCCH scheduling according to another embodiment of the present specification so that the UE can identify PHICH resources using the location of the E-PDCCH. In addition, the E-PDCCH performs uplink allocation, and when the user terminal performs uplink transmission, the E-PDCCH shows a process of including the HARQ result in the downlink radio signal and transmitting the uplink transmission. The eNB of FIG. 8 becomes an embodiment of a base station, and the UE becomes an embodiment of a user terminal or a terminal.

The eNB 800 determines an uplink grant of a specific UE 801 (S810). When the uplink transmission (PUSCH) is indicated by the E-PDCCH, a group and sequence value indicating a PHICH resource including a HARQ result for the uplink transmission may be determined (S820). . E-PDCCH scheduling is performed such that the E-PDCCH indicating the uplink allocation is transmitted at a position capable of calculating the determined group and sequence of PHICH resources (S830). As described in the third embodiment, the E-PDCCH may be scheduled such that a group or sequence of PHICH resources is calculated according to the index of the resource block of the E-PDCCH.

The eNB 800 transmits a downlink including the generated E-PDCCH (S840). The UE 801 grasps that uplink allocation has been made through the E-PDCCH. In addition, as described in the third embodiment, information (group and / or sequence information) indicating a PHICH resource is extracted using physical resources and uplink allocation resources of the E-PDCCH (S850). In operation S860, uplink transmission (PUSCH transmission) is performed on the allocated uplink resource.

When the PUSCH transmission is made, the eNB 800 proceeds with the HARQ process. That is, the eNB 800 proceeds with a HARQ process with respect to the received uplink (PUSCH transmission) (S870), includes the HARQ process result in the PHICH resource determined in S820, and performs downlink transmission (S880, S890). Thereafter, the UE 801 checks the HARQ result included in the PHICH resource indicated in S850 among the received PHICH resources (S895), and determines whether to retransmit.

Although not shown in Figures 7 and 8, the downlink / uplink transmission of S740, S760, S840, S860 may be made through the RRH. This may be configured as shown in FIGS. 9 and 10.

FIG. 9 includes uplink allocation by including all or part of information indicating a PHICH resource in an E-PDCCH according to an embodiment of the present specification as shown in FIG. 7, and then, when a user terminal performs uplink transmission, A diagram showing a process of including the HARQ result in the downlink radio signal and transmitting. In FIG. 9, the RRH 905 performs separate communication with the eNB 900 through a medium such as optical communication, and transmits and receives a radio signal with the UE 901.

The eNB 900 and the RRH 905 determine an uplink grant of a specific UE 901 (S910). When the uplink transmission (PUSCH) is indicated by the E-PDCCH, the eNB 900 and the RRH 905 indicate a group and sequence indicating a PHICH resource including a HARQ result for the uplink transmission. Seq) value can be determined (S920). The RRH 905 generates the E-PDCCH such that a value indicating the determined group and sequence is included in a specific field of the E-PDCCH indicating the uplink allocation. As described above with reference to FIGS. 5 and 6, only the group value is included, the group / sequence value is included, or the PHICH group is divided into subsets, and the PHICH subset is notified in advance as shown in FIG. The method of indicating a group can be applied.

The RRH 905 transmits a downlink including the generated E-PDCCH (S940). The UE 901 knows that uplink allocation has been made through the E-PDCCH. In addition, information (group and / or sequence information) indicating a PHICH resource included in the E-PDCCH is extracted (S950). In operation S960, uplink transmission (PUSCH transmission) is performed on the allocated uplink resource.

When the PUSCH transmission is made, the RRH 905 provides the uplink PUSCH to the eNB 900 (S965). The provision includes the RRH 905 transmitting the uplink PUSCH to the eNB 900 via an optical communication network or the like. The eNB 900 proceeds with the HARQ process for this. That is, the eNB 900 proceeds with the HARQ process on the received uplink (PUSCH transmission) (S970), includes the HARQ process result in the PHICH resource determined in S920, and performs downlink transmission (S980, S990). Thereafter, the UE 901 checks the HARQ result included in the PHICH resource indicated in S750 among the received PHICH resources (S995), and determines whether to retransmit.

FIG. 10 performs E-PDCCH scheduling, as shown in FIG. 8, so that the UE can identify PHICH resources using the location of the E-PDCCH. In addition, the E-PDCCH performs uplink allocation, and when the user terminal performs uplink transmission, the E-PDCCH shows a process of including the HARQ result in the downlink radio signal and transmitting the uplink transmission. In FIG. 10, the RRH 1005 performs separate communication with the eNB 1000 through a medium such as optical communication, and transmits and receives a radio signal with the UE 1001.

The eNB 1000 and the RRH 1005 determine an uplink grant of a specific UE 1001 (S1010). When the uplink transmission (PUSCH) is indicated by the E-PDCCH, the eNB 1000 and the RRH 1005 indicate a group and sequence indicating a PHICH resource including a HARQ result for the uplink transmission. A value of (Seq) may be determined (S1020). E-PDCCH scheduling is performed such that the E-PDCCH indicating the uplink allocation is transmitted at a position capable of calculating the determined group and sequence of PHICH resources (S1030). As described in the third embodiment, the E-PDCCH may be scheduled such that a group or sequence of PHICH resources is calculated according to the index of the resource block of the E-PDCCH.

The RRH 1005 transmits a downlink including the generated E-PDCCH (S1040). The UE 1001 grasps that uplink allocation has been made through the E-PDCCH. In addition, as described in the third embodiment, information (group and / or sequence information) indicating a PHICH resource is extracted using physical resources and uplink allocation resources of the E-PDCCH (S1050). In operation S1060, uplink transmission (PUSCH transmission) is performed on the allocated uplink resource.

When the PUSCH transmission is made, the RRH 1005 provides the uplink PUSCH to the eNB 1000 (S1065). The provision includes the RRH 1005 transmitting the uplink PUSCH to the eNB 1000 via an optical communication network or the like. The eNB 1000 proceeds with the HARQ process for this. That is, the eNB 1000 proceeds with the HARQ process on the received uplink (PUSCH transmission) (S1070), includes the HARQ process result in the PHICH resource determined in S1020, and performs downlink transmission (S1080, S1090). Thereafter, the UE 1001 checks the HARQ result included in the PHICH resource indicated in S1050 among the received PHICH resources (S1095), and determines whether to retransmit.

FIG. 11 is a diagram illustrating a process of allocating and transmitting resources for transmitting a radio signal transmission result in a transmitting end such as a base station and an RRH according to an embodiment of the present specification. In addition, Figure 11 is a process made in a transmitting end for transmitting and receiving a radio signal to a plurality of user terminals, characterized in that the transmitting end is composed of a base station or RRH.

The transmitter determines the uplink allocation of the user terminal and transmits uplink allocation information of the user terminal to the user terminal through the E-PDCCH (S1110). This includes a process in which the RRH or the base station transmits an uplink allocation through the E-PDCCH or the PDCCH as shown in FIG. 1.

Thereafter, a wireless signal is received from the user terminal in the uplink resource allocated through the E-PDCCH (S1120). This includes a process in which the RRH or the base station receives the PUSCH transmission from the user terminal as shown in FIG. 2.

In operation S1130, the transmitting end verifies the received radio signal. The verification result is a HARQ result for the PUSCH transmitted by the user terminal, and the radio resource including the verification result may be a PHICH resource. In addition, the transmitting end, in particular, the base station transmits the verification result to the user terminal (S1140).

The verification result of S1140 is included in a radio resource that can be calculated from a resource including the E-PDCCH or a radio resource that can be calculated from information included in the E-PDCCH. The radio resource that can be calculated from the information included in the E-PDCCH means to include group information or sequence information indicating a PHICH resource in a specific field of the E-PDCCH as in the first and second embodiments. That is, the E-PDCCH includes all or part of group information or sequence information indicating the PHICH resource. As described above with reference to FIGS. 5 and 6, only the group value is included, the group / sequence value is included, or the PHICH group is divided into subsets, and the PHICH subset is notified in advance as shown in FIG. The method of indicating a group can be applied.

Meanwhile, the radio resource that can be calculated from the resource including the E-PDCCH is calculated as a group or sequence of PHICH resources by using the index of the physical resource block of the E-PDCCH which performs uplink allocation as in the third embodiment. It means an embodiment that can be done. That is, group information or sequence information indicating the PHICH resource may be calculated using the resource block index of the E-PDCCH. In other words, by using the index E _{PRB_RA} of the physical resource block of the E-PDCCH indicating the uplink allocation and the index I _{PRB_RA} of the uplink allocated physical resource block, as shown in

Equation

7 or 8 The PHICH resource to which the HARQ result for the uplink performance may be allocated may be identified.

S1110, S1120, and S1130 may be performed in cooperation with the base station and the RRH or the base station / RRH alone. However, S1140 may transmit the PHICH including the verification result in the apparatus for transmitting the reference signal (for example, the CRS) for the entire cell, such as the base station, for example, the eNB.

When calculating a group or sequence of PHICH resources through a radio resource that can be calculated from a resource including an E-PDCCH in S1110, the PHICH resource calculated through the E-PDCCH does not collide with a PHICH resource of another user terminal. PDCCH scheduling may be additionally performed.

12 is a diagram illustrating a process of receiving a radio signal transmission result after transmitting a radio signal after receiving uplink allocation from a transmitting end such as a base station and an RRH according to an embodiment of the present specification. In addition, the transmitting end of Figure 12 is characterized by consisting of a base station or an RRH.

The user terminal receives uplink allocation information through the E-PDCCH from the transmitting end (S1210). This includes a process in which the RRH or the base station is instructed to allocate uplink through the E-PDCCH or the PDCCH as shown in FIG. 1.

In operation S1220, a radio signal is transmitted on an uplink resource allocated through the E-PDCCH. This includes a process of transmitting a PUSCH to the RRH or the base station by the user terminal as shown in FIG.

Thereafter, the verification result of the transmitted radio signal is received from a radio resource that can be calculated from a resource including the E-PDCCH or a radio resource that can be calculated from information included in the E-PDCCH (S1230). Thereafter, the previously transmitted wireless signal may be retransmitted according to the verification result.

The verification result is a HARQ result for the PUSCH transmitted by the user terminal, and the radio resource including the verification result may be a PHICH resource. In particular, the user terminal receives the verification result from the base station. That is, from an apparatus for transmitting a reference signal (for example, CRS) for all cells, such as a base station, for example, an eNB, the user terminal may receive a PHICH including a verification result.

The verification result is included in a radio resource that can be calculated from a resource including the E-PDCCH or a radio resource that can be calculated from information included in the E-PDCCH. The radio resource that can be calculated from the information included in the E-PDCCH means to include group information or sequence information indicating a PHICH resource in a specific field of the E-PDCCH as in the first and second embodiments. That is, the E-PDCCH includes all or part of group information or sequence information indicating the PHICH resource. As described above with reference to FIGS. 5 and 6, only the group value is included, the group / sequence value is included, or the PHICH group is divided into subsets, and the PHICH subset is notified in advance as shown in FIG. The method of indicating a group can be applied.

Meanwhile, the radio resource that can be calculated from the resource including the E-PDCCH is calculated as a group or sequence of PHICH resources by using the index of the physical resource block of the E-PDCCH which performs uplink allocation as in the third embodiment. It means an embodiment that can be done. That is, group information or sequence information indicating the PHICH resource may be calculated using the resource block index of the E-PDCCH. That is, the user terminal uses the index E _{PRB_RA} of the physical resource block of the E-PDCCH indicating the uplink allocation and the index I _{PRB_RA} of the uplink allocated physical resource block. Likewise, the PHICH resource to which the HARQ result for the corresponding uplink execution can be identified can be identified.

13 is a diagram illustrating a configuration of a base station according to an embodiment of the present specification. In addition to the components of FIG. 13, the base station may further require various components to transmit and receive wireless signals to and from user terminals, and FIG. 13 illustrates components required to implement an embodiment of the present specification.

The base station includes a resource allocator 1310, a verification unit 1320, and a transceiver 1330.

The resource allocator 1310 allocates the E-PDCCH to a radio resource of a pre-calculated index so that the E-PDCCH including uplink allocation information of the user terminal indicates an index of a radio resource to transmit the uplink result. The E-PDCCH is generated by including a pre-calculated value in the E-PDCCH.

The verification unit 1320 verifies the radio signal transmitted by the user terminal receiving the radio signal including the E-PDCCH.

The transceiver 1330 transmits the verification result to the user terminal and receives a signal from one or more user terminals.

The verification result is a HARQ result for the PUSCH transmitted by the user terminal, and the radio resource including the verification result may be a PHICH resource.

The resource allocator 1310 may include all or part of group information or sequence information indicating the PHICH resource in the E-PDCCH.

This means that the group information or the sequence information indicating the PHICH resource is included in a specific field of the E-PDCCH as in the first and second embodiments. That is, the E-PDCCH includes all or part of group information or sequence information indicating the PHICH resource. As described above with reference to FIGS. 5 and 6, only the group value is included, the group / sequence value is included, or the PHICH group is divided into subsets, and the PHICH subset is notified in advance as shown in FIG. The method of indicating a group can be applied.

In addition, the resource allocator 1310 uses a resource block index of a radio resource to which the E-PDCCH is to be allocated so that group information or sequence information indicating the PHICH resource is calculated, and to the resource to which the E-PDCCH is to be allocated. Scheduling may be performed.

This is an embodiment in which a group or sequence of PHICH resources can be calculated using the index of the physical resource block of the E-PDCCH that performs uplink allocation, as in the third embodiment. That is, group information or sequence information indicating the PHICH resource may be calculated using the resource block index of the E-PDCCH. In other words, by using the index E _{PRB_RA} of the physical resource block of the E-PDCCH indicating the uplink allocation and the index I _{PRB_RA} of the uplink allocated physical resource block, as shown in

Equation

7 or 8 The resource allocator 1310 may allocate an E-PDCCH to a radio resource of a predetermined index, so that the PHICH resource to which the HARQ result for the uplink performance is allocated is identified. In addition, the resource allocator 1310 may additionally perform E-PDCCH scheduling so that PHICH resources calculated through the E-PDCCH do not collide with PHICH resources of other user terminals.

14 is a diagram illustrating a configuration of a user terminal according to one embodiment of the present specification. In addition to the components of FIG. 14, the user terminal may further require various components to transmit and receive wireless signals with the base station, and FIG. 14 illustrates components required to implement an embodiment of the present specification.

The user terminal according to the embodiment may be composed of a verification result checker 1410, a resource checker 1420, and a transceiver 1430.

The transceiver 1430 receives uplink resource allocation information through an E-PDCCH from a transmitting end, for example, a base station, and uses a first radio resource for uplink allocated through the E-PDCCH. Can be sent.

The resource identifying unit 1420 may calculate the index of the second radio resource from the index of the radio resource including the E-PDCCH or the information included in the E-PDCCH.

The transceiver 1430 may receive an uplink transmission result transmitted from the second radio resource using the first radio resource, and a verification result confirming unit 1410 may check the uplink transmission result.

The verification result is a HARQ result for the PUSCH transmitted by the user terminal, and the radio resource including the verification result may be a PHICH resource. In particular, the user terminal may receive the verification result from the base station. That is, from an apparatus for transmitting a reference signal (for example, CRS) for all cells, such as a base station, for example, an eNB, the user terminal may receive a PHICH including a verification result.

The resource identifying unit 1420 may be included in the E-PDCCH and may calculate an index of the second radio resource by using all or part of group information or sequence information indicating the PHICH resource. This means that, as in the first and second embodiments, the resource identifying unit 1420 calculates an index of a radio resource including the PHICH by using group information or sequence information indicating a PHICH resource in a specific field of the E-PDCCH. Can be. That is, the E-PDCCH may include all or part of group information or sequence information indicating the PHICH resource. As described above with reference to FIGS. 5 and 6, only the group value is included, the group / sequence value is included, or the PHICH group is divided into subsets, and the PHICH subset is notified in advance as shown in FIG. The method of indicating a group can be applied.

In addition, the resource identification unit 1420 may calculate group information or sequence information indicating the PHICH resource using the resource block index of the E-PDCCH. That is, as in the third embodiment, the resource identifying unit 1420 may identify the PHICH resource by calculating a group or sequence of PHICH resources using the index of the physical resource block of the E-PDCCH that performs uplink allocation. have. In other words, the user terminal may use Equation 7 or Equation 7 using the index E _{PRB_RA} of the physical resource block of the E-PDCCH indicating the uplink allocation and the index I _{PRB_RA} of the uplink allocated physical resource block. As shown in FIG. 8, a PHICH resource to which an HARQ result for uplink performance is allocated may be identified.

In the past, when determining the PHICH resource for performing N / Ack report by the band in which the PUSCH transmission is performed and the cyclic shift index (DM RS CS) of the DM RS used by the PUSCH transmission, to some terminals In order to avoid a collision in which N / Ack information to be transmitted uses the same PHICH resource, the collision is controlled so that the collision does not occur through scheduling of the base station. In this case, the PUSCH transmission is performed in the same subframe, and the PHICH resource of an appropriate size is set in consideration of the number of UEs to perform N / Ack reception through the PHICH in the same subframe, and the PUSCH band scheduling and uplink DM RS are performed. Through CS assignment, PHICH resources for N / Ack delivery could be distributed to each UE. This PHICH resource allocation method for performing each N / Ack has the advantage that PHICH resource allocation can be performed without signaling overhead, but it is impossible to manage dedicated resources (dedicated resource management). The efficiency of utilization may be diminished.

Downlink control channel capacity is increased by the use of E-PDCCH in CoMP scenario 4, and downlink shared channel capacity is also increased by the use of multiple transmission points. Increases. In addition, the capacity of an uplink shared channel and an uplink control channel is increased by the use of multiple reception points. In such an environment, when an embodiment of the present specification is applied to support increased PUSCH capacity, PHICH resource management or PHICH resource enhancement may be achieved.

That is, in the present specification, when the number of UEs performing PUSCH transmission in the same subframe or N / Ack reception in the same subframe increases, a radio resource can be efficiently used. The PHICH resource is calculated from the radio resource of the E-PDCCH by including some or all of the information indicating the resource or by E-PDCCH scheduling which does not significantly affect the transmission efficiency in comparison with the PUSCH. Therefore, both resource efficiency and transmission efficiency can be considered.

When implementing one embodiment of the present invention, it is possible to efficiently use the resources of the control region, such as PHICH. That is, in the uplink allocation process, the E-PDCCH scheduling may be performed in addition to the PUSCH scheduling, or the resource for the PHICH may be allocated to the E-PDCCH, so that the limited PHICH resource may be more effectively used.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited thereto. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

CROSS-REFERENCE TO RELATED APPLICATION

This patent application claims priority under No. 10 (2011) 144 (a) (35 USC § 119 (a)) of the Patent Application No. 10-2011-0114497 filed with Korea on 4 November 2011. All content is incorporated by reference in this patent application. In addition, if this patent application claims priority for the same reason for countries other than the United States, all its contents are incorporated into this patent application by reference.

Claims

In the transmitting end for transmitting and receiving a radio signal to a plurality of user terminals,

Transmitting uplink resource allocation information of the user terminal to the user terminal through an enhanced PDCCH (E-PDCCH);

Receiving a radio signal from the user terminal by using an uplink resource allocated through the E-PDCCH; And

Transmitting the verification result of the received wireless signal to the user terminal,

The verification result is included in a PHICH (Physical Hybrid ARQ Indicator CHannel) resource that can be calculated from a radio resource including the E-PDCCH or a PHICH resource that can be calculated from information included in the E-PDCCH, the radio signal transmission How to allocate resources for results and send them.
The method of claim 1,

The E-PDCCH includes all or part of group information or sequence information indicating the PHICH resource, the method for allocating and transmitting resources for the radio signal transmission result.
The method of claim 1,

Characterized in that group information or sequence information indicating the PHICH resource is calculated using a block index of the resource including the E-PDCCH,

Prior to transmitting the uplink resource allocation information, further comprising the step of scheduling for the resource to which the E-PDCCH is to be allocated, allocating a resource for a radio signal transmission result and transmitting it.
The method of claim 1,

The transmitting end is composed of at least one of a base station or a remote radio head (RRH), and the verification result is the base station transmits to the user terminal, allocates the resource for the radio signal transmission result and transmit it How to.
In the user terminal,

Receiving uplink resource allocation information through an enhanced PDCCH (E-PDCCH) from a transmitting end;

Transmitting a radio signal using an uplink resource allocated through the E-PDCCH; And

Receiving a verification result of the transmitted radio signal using a PHICH (Physical Hybrid ARQ Indicator CHannel) resource that can be calculated from a radio resource including the E-PDCCH or a PHICH resource that can be calculated from information included in the E-PDCCH Including a resource for a wireless signal transmission result.
The method of claim 5,

The E-PDCCH includes all or part of group information or sequence information indicating the PHICH resource, the method for receiving a resource for a radio signal transmission result.
The method of claim 5,

And group information or sequence information indicating the PHICH resource is calculated using a block index of the resource including the E-PDCCH.
The method of claim 5,

The transmitting end is composed of any one or more of the base station or RRH, characterized in that the verification result is received from the base station, the method for receiving a resource for a radio signal transmission result.
In the transmitting end for transmitting and receiving a radio signal to a plurality of user terminals,

Assign the E-PDCCH to a radio resource of a pre-computed index or assign the E-PDCCH to an E-PDCCH such that an E-PDCCH including uplink resource allocation information of a user terminal indicates an index of a radio resource to transmit the uplink result. A resource allocator configured to generate the E-PDCCH by including a pre-calculated value;

A verification unit for verifying a radio signal transmitted by a user terminal receiving the uplink resource allocation information; And

And a transceiver for transmitting the verification result to the user terminal through a physical hybrid ARQ indicator channel (PHICH) resource and receiving a signal from at least one user terminal.
The method of claim 9,

And the resource allocator includes all or part of group information or sequence information indicating the PHICH resource in the E-PDCCH.
The method of claim 9,

The resource allocator uses a block index of a radio resource to which the E-PDCCH is to be allocated such that group information or sequence information indicating the PHICH resource is calculated, and performs scheduling on a resource to which the E-PDCCH is to be allocated. Apparatus for allocating resources for signal transmission result and transmitting them.
Transmitting / receiving uplink resource allocation information through an extended PDCCH (E-PDCCH) from a transmitting end, and transmitting a radio signal using a physical uplink shared channel (PUSCH) resource for uplink allocated through the E-PDCCH part; And

A resource identification unit for calculating an index of a PHICH (Physical Hybrid ARQ Indicator CHannel) resource from a block index of a radio resource including the E-PDCCH or information included in the E-PDCCH;

And the transmitting and receiving unit receives a result of verifying a radio signal transmitted from the PUSCH resource through the PHICH resource.
The method of claim 12,

The apparatus for receiving a resource for a radio signal transmission result included in the E-PDCCH and calculating an index of the PHICH resource using all or part of group information or sequence information indicating the PHICH resource. .
The method of claim 12,

And the resource checking unit calculates group information or sequence information indicating the PHICH resource by using the resource block index of the E-PDCCH.