WO2012152113A1

WO2012152113A1 - Method and device for determining physical uplink control channel resources in a wide bandwidth system

Info

Publication number: WO2012152113A1
Application number: PCT/CN2012/072185
Authority: WO
Inventors: 戴博; 张禹强; 陈艺戬; 郭森宝; 左志松
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-09-30
Filing date: 2012-03-12
Publication date: 2012-11-15
Also published as: CN102316595A; CN102316595B

Abstract

Disclosed are a method and a device for determining physical uplink control channel resources in a wide bandwidth system. The method comprises: a user equipment acquiring a channel resource index n_PUCCH ⁽¹⁾of a physical uplink control channel PUCCH, the PUCCH being used to bear acknowledgement/negative acknowledgement ACK/NACK information of a physical downlink shared channel PDSCH indicated by an enhanced physical downlink control channel ePDCCH; and the user equipment determining, according to the acquired channel resource index n_PUCCH ⁽¹⁾, resources used by the PDSCH. Through the present invention, normal performing of an HARQ process corresponding to an ePDCCH is ensured.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a method and apparatus for determining a physical uplink control channel resource of a large bandwidth system. 1 is a schematic diagram of a frame structure of an LTE (Long Term Evolution) system FDD (Frequency Division Duplex) mode according to the related art. As shown in FIG. 1 , in a frame structure of an FDD mode, A 10ms radio frame consists of twenty slots (lengths) of length 0~19, and slots 2i and 2i+1 form a subframe of length 1ms. 2 is a schematic diagram of a frame structure according to an LTE (Long Term Evolution) system TDD (Time Division Duplex) mode according to the related art. As shown in FIG. 2, a frame structure of a TDD mode is 10 ms. The radio frame consists of two half frames of 5 ms long. One frame contains five subframes with a length of 1 ms. Subframe i is defined as two time slots 2i and 2i+1 that are 0.5 ms long. In the two frame structures, for Normal CP (Normal Cyclic Prefix), one slot contains seven symbols with a length of 66.7, where the CP length of the first symbol is 5.21us, and the CP length of the remaining six symbols. It is 4.69us; for Extended (Extended) CP, one slot contains 6 symbols, and the CP length of all symbols is 16.67us.

LTE defines a PDCCH (Physical Downlink Control Channel) bearer scheduling allocation and other control information; a PCFICH (Physical Control Format Indicator Channel) carries an OFDM symbol for transmitting a PDCCH in one subframe. The number information is transmitted on the first OFDM symbol of the subframe, and the frequency position is determined by the system downlink bandwidth and the cell ID. Each PDCCH is composed of a number of CCEs (Control Channel Elements), and the number of CCEs per subframe is determined by the number of PDCCHs and the downlink bandwidth. The CCE of each subframe is indexed according to the sequential number of the time domain after the frequency domain. LTE Release-8 defines six bandwidths: 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz.

LTE-Advanced (Further Advancements for E-UTRA) is an evolved version of LTE Release-8. In addition to meeting or exceeding all relevant requirements of 3GPP TR 25.913: "Requirements for Evolved UTRA (E-UTRA) and Evolved UTRAN (E-UTRAN)", it also meets or exceeds the requirements of IMT-Advanced proposed by ITU-R. Among them, the requirement for backward compatibility with LTE Release-8 means: LTE Release-8 The terminal can work in the LTE-Advanced network; the LTE-Advanced terminal can be in the LTE Release-

Working in the network of 8. In addition, LTE-Advanced should be able to operate in different spectrum configurations, including a wider spectrum configuration than LTE Release-8 (such as 100 MHz of continuous spectrum resources) to achieve higher performance and target peak rates. Since the LTE-Advanced network needs to be able to access LTE users, its operating band needs to cover the current LTE frequency band, and there is no allocated 100 MHz spectrum bandwidth that can be allocated in this frequency band. Therefore, a direct technology that LTE-Advanced needs to solve is to aggregate several consecutive component carrier carriers distributed in different frequency bands to form a 100 MHz bandwidth that can be used by LTE-Advanced. That is, for the aggregated spectrum, it is divided into n component carrier carriers, and the spectrum in each component carrier frequency (spectrum) is continuous. FIG. 3 is a schematic diagram of a spectrum configuration according to the related art. As shown in FIG. 3, there are mainly three schemes for spectrum configuration, as shown in FIG. 3. Among them, the grid part is the system bandwidth compatible with LTE Release-8, and the slash part is the system bandwidth of LTE-Advanced. 3A is a spectrum configuration scheme 1, which means that the LTE-Advanced spectrum configuration is composed of a system bandwidth defined by one LTE-Advanced, and the bandwidth is greater than the system bandwidth defined by LTE Release-8. Figure 3b shows the spectrum configuration scheme 2, which means that the LTE-Advanced spectrum configuration consists of a system bandwidth defined by one LTE Release-8 and a system bandwidth defined by multiple LTE-Advanceds through carrier aggregation. Figure 3c shows the spectrum configuration scheme 3, which refers to the LTE-Advanced spectrum configuration. The system bandwidth defined by multiple LTE Release-8s is composed of carrier aggregation. The aggregation of the foregoing spectrum may be continuous spectrum aggregation or It is the aggregation of discontinuous spectrum. The LTE Release-8 UE can access the LTE Release-8 compatible frequency band, and the LTE-AUE can access the LTE Release-8 compatible frequency band and also access the LTE-Advanced frequency band. Considering the compatibility with LTE Release-8, each component carrier frequency of LTE-Advanced needs to be able to access LTE users, which needs to ensure that the channel structure of each component carrier frequency is kept as close as possible to LTE. At present, in the FDD duplex mode, the number of available component carrier frequencies of the uplink and downlink can be different, so that each downlink component carrier frequency cannot be used - corresponding to the uplink control channel PUCCH (Physical uplink control channel, physical uplink) Control channel), the PUCCH resource index that LTE has designed cannot work properly. Currently, the PUCCH resource index for transmitting the HARQ-ACK in the uplink in the LTE FDD duplex mode is dynamically mapped by the minimum CCE allocated to the PDCCH of the user in the scheduled downlink subframe. Gp " cc _H = " _CCE ^{+ A} 3⁄4 _CCH , where " ^CCH is the PUCCH resource for the user to send _HAR Q- _AC K Index, " ^CCE is the first CCE index corresponding to the transmission PDCCH, and ^V PUCCH is configured by the upper layer. For the semi-statically scheduled PDSCH, " ^PUCCH is configured by the upper layer. For the PDSCH that is dynamically scheduled in the LTE TDD duplex mode, the PUCCH resource index of the uplink HARQ-ACK is obtained by block interleaving the CCEs of the PDCCH allocated to the user in the scheduled downlink subframe. Since there is a configuration in the TDD mode that the number of downlink subframes is larger than the number of uplink subframes in a radio frame, the concept of a feedback window is defined. The feedback window is all the downlink subframes corresponding to the uplink subframes. It should be noted that the “correspondence” here means that the downlink subframes are fed back the acknowledgement information in the uplink subframe. For the TDD duplex mode, there may be a configuration scenario in which the downlink subframe is larger than the uplink subframe in one radio frame. Therefore, feedback information of multiple downlink subframes may be sent in the same uplink subframe. A plurality of downlink subframes corresponding to such an uplink subframe are referred to as a feedback window.

0)

In the TDD ACK/NACK binding or multiplexing mode, when the feedback window is only 1, "the ^PUCCH is determined by: the PDSCH transmission is indicated by the PDCCH, or the downlink SPS release indicated by the PDCCH is released, and d is used for blocking. The interlace mapping is obtained. For the PDSCH transmission is not indicated by the PDCCH, then "^ is determined by the high layer configuration and Table 1, and Table 1 shows the relationship of the PUCCH resource index corresponding signaling, as shown in Table 1:

Relationship between PUCCH resource index and signaling

For a semi-static downlink scheduling activation transmission indicated by Downlink Control Information (DCI) signaling, "^CCH indicates one of the four resources configured by the upper layer by the TPC domain, and the mapping table is given by Table 1. At present, in the continuous evolution of LTE-Advanced, the demand for the number of users for system expansion is increasing, and the existing physical downlink control channel (Physical Downlink Control Channel, PDCCH for short) can no longer meet the requirements of more advanced wireless communication. For the requirements of the system, the 3GPP introduces an ePDCCH (Enhanced PDCCH) channel to enhance the PDCCH performance, and introduces a new transmission PDCCH region. In this case, how to obtain the transmission ACK/NACK corresponding to the PDSCH of the ePDCCH Physically The Physical Uplink Control Channel (PUCCH) resource is called a problem to be solved. SUMMARY OF THE INVENTION The present invention provides a method and apparatus for determining a physical uplink control channel resource of a large bandwidth system, in order to solve the above problem, for how to obtain a PUCCH resource for transmitting ACK/NACK corresponding to a PDSCH of an ePDCCH. According to an aspect of the present invention, a method for determining a physical uplink control channel resource of a large bandwidth system is provided, including: a user equipment acquiring a channel resource index CCH of a physical uplink control channel PUCCH, where the PUCCH is used to carry enhanced physical a positive acknowledgment/negative acknowledgment ACK/NACK information of the physical downlink shared channel PDSCH indicated by the downlink control channel ePDCCH; the user equipment according to the obtained channel resource index

The PUCCH determines the resource used by the PDSCH. Preferably, the user equipment acquires the channel resource index ^w ^cH by one of the following manners or any combination thereof: obtaining by using the received high layer signaling; The downlink control information is dynamically indicated by the DCI signaling, and is obtained by the implicit mapping. Preferably, the channel resource index "PuccH" is determined by the received high layer signaling, and is determined by using parameters carried in the high layer signaling. Preferably, the channel resource index is obtained by the high-level configuration parameter and the DCI signaling dynamic indication. The ^CCH includes: the user equipment according to the ACK/NACK resource indication signaling ARI domain field value in the received DCI signaling, And the high-level configuration parameter, the channel resource index " ^CCH is obtained, where the high-level configuration parameter is used to configure a PUCCH resource group, and the domain value of the ARI domain is used to indicate that the PUCCH resource group is available. PUCCH resources. Preferably, the channel resource index "^CCH" is determined by the high-level configuration parameter and the DCI signaling dynamic indication, including: the user equipment according to the domain value of the TPC domain already existing in the received DCI signaling, and the high-level configuration a parameter, the channel resource index "^CCH, where the high-level configuration parameter is used to configure a PUCCH resource group, and the domain value of the TPC domain is used to indicate a PUCCH resource available in the PUCCH resource group, or The ARI domain is a dedicated domain in the DCI signaling. Preferably, the user equipment acquires the high-level configuration parameter by using parameters carried in the received high-layer signaling. Preferably, before the user equipment acquires the channel resource index by means of implicit mapping, the method includes: determining, by the user equipment, a starting location of a channel resource of the PUCCH, where the starting location includes the The starting position of the PUCCH on the frequency domain resource pre-added on the basis of the carrier frequency resources existing in the current large-bandwidth system, or the starting position of the existing carrier frequency resource existing in the existing large-bandwidth system of the PUCCH. In the case of the frequency division duplex system, in the case where the starting position on the frequency domain resource is added in advance based on the carrier frequency resources existing in the current large-bandwidth system, the user equipment passes the implicit mapping manner. Obtaining the channel resource index includes: ⁼ " _VRI ⁺ ^ _CCH , where is a high-level signaling configuration parameter, " ^VRI is the lowest index of the physical resource block in which the ePDCCH is located, or, "v _RI is where the _ePDCCH is located virtual lowest CCE index, or, "v _RI is the index of the lowest PRE PDSCH is located. preferably, in a frequency division duplex system, the carrier has large bandwidth systems exist If the user equipment obtains the channel resource index by using the implicit mapping, the user equipment further includes: , where ^ is a high-level signaling configuration parameter, which is compatible in the current downlink subframe. The total number of PDCCH area CCEs, "v _RI is the lowest index of the physical resource block where the _e p _DCC H is located, or "^ is the lowest index of the virtual CCE where the ePDCCH is located, or is the lowest PRB of the PDSCH. index preferably, in a time division duplex system, the user equipment obtains the channel resource index bow comprises a channel through the implicit mapping mode: ⁼ _"VRI + ^ _CCH, wherein higher layer signaling is the configuration parameters,

^NccE is the total number of PDCCH region control channel elements CCEs in the current downlink subframe, and "v _{RI is} a virtual resource block index composed of corresponding virtual resources on the downlink subframe. Preferably, in the time division duplex system, The obtaining, by the user equipment, the channel resource index by using the implicit mapping manner further includes: wherein, the NS _CCH is a high-level signaling configuration parameter, and the _CE is a total number of compatible PDCCH regions CCE in the current downlink subframe, “v _RI A virtual resource block index that is composed of corresponding virtual resources on the downlink subframe. Preferably, the virtual resource block index " ^VRI " formed by the corresponding virtual resource on the downlink subframe is determined by an interleaving manner or a continuous mapping manner, where the interleaving manner includes at least a block interleaving manner. And a device for determining a physical uplink control channel resource of a large bandwidth system, comprising: an obtaining module, configured to acquire a channel resource index of the uplink control channel PUCCH, "^CCH, where the PUCCH is used to carry enhanced physical downlink a positive acknowledgment/negative acknowledgment ACK/NACK information of the physical downlink shared channel PDSCH indicated by the control channel ePDCCH; and a determining module configured to determine, according to the obtained channel resource index "^CCH, the resource used by the PDSCH. Preferably, The obtaining module obtains the channel resource index ^w TMccH by one of the following methods or any combination thereof: obtaining by the received high layer signaling; dynamically indicating acquisition by using high layer configuration parameters and downlink control information DCI signaling; and implicit mapping By means of the present invention, the user equipment is used to acquire the PUCCH. Channel resource index ^ CCH, wherein, ACK / NACK PUCCH for carrying information PDSCH ePDCCH indicated, then in accordance with the acquired channel resource index

"^CCH determines the resources used by the PUCCH, so that the feedback information of the PDSCH corresponding to the ePDCCH can be fed back through the PUCCH in the ePDCCH-corresponding HARQ process, ensuring that the ePDCCH-corresponding HARQ process is normally performed, and the LTE-Advanced system and the LTE Release-8 are guaranteed. The compatibility of the system enables the LTE-Advanced terminal to obtain the maximum frequency selective gain. The accompanying drawings are intended to provide a further understanding of the invention, which form a part of this application, The description of the present invention is not intended to limit the present invention. In the drawings: FIG. 1 is a schematic diagram of a frame structure according to an LTE system FDD mode in the related art; FIG. 2 is an LTE system TDD according to the related art. FIG. 3 is a schematic diagram of a spectrum configuration according to the related art; FIG. 4 is a flowchart of a method for determining a PUCCH channel resource of a large bandwidth system according to an embodiment of the present invention; FIG. 5 is a large diagram according to an embodiment of the present invention. A block diagram of a bandwidth system PUCCH channel resource determining apparatus; FIG. 6 is a diagram of a T according to a preferred embodiment of the present invention. VR's VRB diagram; Figure 7 is a schematic diagram of a block interleaving in accordance with a preferred embodiment of the present invention; Figure 8 is a schematic diagram of a continuous mapping in accordance with a preferred embodiment of the present invention; and Figure 9 is a schematic diagram of other interleaving modes in accordance with a preferred embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. An ePDCCH channel is introduced in the 3GPP to enhance the PDCCH performance, and a new transmission PDCCH region is introduced. In this embodiment, a method for obtaining a PUCCH channel resource for transmitting an ACK/NACK corresponding to a PDSCH of an ePDCCH is provided, which is ensured by the method. The ePDCCH corresponding to the HARQ process is normally performed, and the compatibility between the LTE-Advanced system and the LTE Release-8 system is ensured, so that the LTE-Advanced terminal obtains the maximum frequency selective gain. It should be noted that the following embodiments and their preferred implementations The system to which the method is applied is not limited to the LTE-Advanced system. 4 is a flowchart of a method for determining a PUCCH channel resource of a large bandwidth system according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps: Step S402: A user equipment acquires a channel resource index "^CCH" of a PUCCH, where The PUCCH is used to carry the ACK/NACK information of the PDSCH indicated by the ePDCCH. Step S404, the user equipment determines the resource used by the PDSCH according to the obtained channel resource index "^CCH. The channel resource index "PUCCH" of the PUCCH is obtained by using the user equipment, and the PUCCH is used to carry the ACK/NACK information of the PDSCH indicated by the ePDCCH; and the user equipment according to the obtained channel resource index "^ ^CCH The ACK/NACK information of the PDSCH indicated by the ePDCCH is fed back, thereby ensuring that the ePDCCH corresponding HARQ process is performed normally, and the compatibility between the LTE-Advanced system and the LTE Release-8 system is ensured, so that the LTE-Advanced terminal obtains the maximum frequency selectivity. Gain. As a preferred implementation of the present implementation, the user equipment can obtain the channel resource index " _CCH " in multiple manners, for example, by receiving the received high-layer signaling; and dynamically configuring the DCI signaling through the high-level configuration parameters and the downlink control information. Instructed to obtain; obtained by means of implicit mapping. It should be noted that the user equipment can be The person who obtains the manner of acquisition is obtained by one or any combination thereof. In this manner, so obtaining channel resource index "convenience ¾ _CH, and selects acquisition mode includes diversity Preferably, determining a channel resource index through the received higher layer signaling." ^{The PUCCH} comprising: higher layer signaling parameters carried determine. This method of acquisition is relatively simple. As another preferred embodiment of the present embodiment, the channel resource index is dynamically indicated by the high-level configuration parameter and the DCI signaling. The ^CCH can be implemented in multiple manners, for example, according to the received DCI signaling by the user equipment. The ACK/NACK resource indicates the domain value of the signaling ARI domain, and the high-level configuration parameter, and obtains the channel resource index "^CCH, where the high-level configuration parameter is used to configure one PUCCH resource group, and the domain value of the ARI domain is used to indicate the PUCCH. The PUCCH resource is available in the resource group. For example, the user equipment obtains the channel resource index according to the domain value of the existing TPC domain and the high-level configuration parameter in the received DCI signaling. 3⁄4 _CH , the high-level configuration parameter For configuring a PUCCH resource group, the domain value of the TPC domain is used to indicate a PUCCH resource that is available in the PUCCH resource group, or the ARI domain is a dedicated domain in the DCI signaling. Preferably, in the foregoing embodiment, The user equipment can obtain high-level configuration parameters by using the parameters carried in the received high-level signaling. Another preferred implementation of this embodiment. The user equipment needs to determine the starting location of the channel resource of the PUCCH before the user equipment acquires the channel resource index "^CCH" by means of implicit mapping, where the starting location includes the presence of the PUCCH in the current large broadband system. The starting position on the frequency domain resource added in advance on the basis of the frequency resource, or the starting position of the PUCCH existing in the carrier frequency resource existing in the existing large broadband system. In the following FDD and TDD systems, the user equipment obtains the channel resource index by means of implicit mapping.

"PUCCH mode is explained. In the frequency division duplex system, in the case where the starting position on the frequency domain resource is added in advance based on the carrier frequency resources existing in the current large-bandwidth system, the user equipment passes the implicit mapping. The method of obtaining the channel resource index "^CCH" includes: "^c _CH ⁼ " _VRI +^ _CCH , where ^CCH is a high-level signaling configuration parameter, "v _RI is the lowest index of the physical resource block in which the _EP DCCH is located, or," ^{The VRI} is the lowest index of the virtual CCE where the ePDCCH is located, or, "VRI is the lowest index of the PRB where the PDSCH is located. In addition, in the frequency division duplex system, in the case where the existing carrier frequency resource existing in the large-bandwidth system already exists, the user equipment obtains the channel resource index by means of implicit mapping, and includes: NS _CCH is a high-level signaling configuration parameter, which is the total number of compatible PDCCH area CCEs in the current downlink subframe. "VRI is the lowest index of the physical resource block where _e p _DCC H is located, or, " ^VRI is the lowest virtual CCE where ePDCCH is located. Bow|, or, is the lowest index of the PRB where the _PDSCH is located. In the time division duplex system, the user equipment obtains the channel resource index by means of implicit mapping, including:

ν

The parameter is a high-level signaling configuration parameter, which is a total number of control channel unit CCEs that are compatible with the PDCCH region in the current downlink subframe, and is a virtual resource block index that is composed of corresponding virtual resources on the downlink subframe. Also included, , where ^! For the high-level signaling configuration parameter, the total number of compatible PDCCH region CCEs in the current downlink subframe is a virtual resource block index composed of corresponding virtual resources on the downlink subframe. Preferably, the virtual resource block index " ^VRI " of the corresponding virtual resource on the downlink subframe is determined by an interleaving manner or a continuous mapping manner, where the interleaving manner includes at least a block interleaving manner. In this embodiment, a A large-bandwidth system PUCCH channel resource determining apparatus, which is used to implement the above-described embodiments and preferred embodiments thereof, has not been described again, and the various modules involved in the apparatus will be described below. The term "module" may implement a combination of software and/or hardware for a predetermined function. Although the systems and methods described in the following embodiments are preferably implemented in software, hardware, or a combination of software and hardware, is also possible. 5 is a structural block diagram of a PUCCH channel resource determining apparatus for a large bandwidth system according to an embodiment of the present invention. As shown in FIG. 5, the apparatus includes an obtaining module 50 and a determining module 52. The module and its functions are described. The obtaining module 50 is configured to acquire the channel resource of the uplink control channel PUCCH. An index, where the PUCCH is used to carry the positive acknowledgment/negative acknowledgment ACK/NACK information of the physical downlink shared channel PDSCH indicated by the enhanced physical downlink control channel ePDCCH; the determining module 52 is connected to the obtaining module 50, and the determining module 52 is configured to The obtained channel resource index "^CCH determines the resource used by the PDSCH. Preferably, the obtaining module 50 obtains the channel resource index by one of the following methods or any combination thereof: ^CCH: obtained by the received high-layer signaling; dynamically indicated by the high-level configuration parameter and the downlink control information DCI signaling; The manner of mapping is obtained. The following describes the preferred embodiment, which combines the foregoing embodiments and preferred embodiments thereof. In the preferred embodiment, an LTE-Advanced supporting ePDCCH channel is provided and compatible with LTE Release. The method for determining the uplink feedback channel is -8. In the preferred embodiment, the user equipment (User equipment, abbreviated as UE), the channel resource index of the PUCCH carrying the ACK/NACK of the PDSCH indicated by the ePDCCH is as follows: One or more ways are obtained: mode one, obtained by high layer signaling; mode two, jointly determined by high layer configuration and DCI signaling dynamic indication; mode three, determined by implicit mode. The three acquisition methods are described below. For the first mode, the high-level signaling obtaining manner is specifically expressed as follows: "^CCH is determined according to the high-layer signaling W^CCH. For the second mode, the high-level configuration parameter and the DCI signaling dynamic indication are specifically, "^CCH according to the upper layer Signaling X and ARI (ACK/NACK Resource Indicator) signaling are determined, where the high layer signaling X is configured with a set of PUCCH resources, and the ARI indicates a specific one of the PUCCH resources in the PUCCH resource group, where the ARI signaling is The newly added signaling in the DCI, or the ARI signaling is an existing indication field in the DCI signaling, such as a TPC domain. For the mode 3, the implicit mapping mode has three forms, one is determined according to the physical resource block index where the ePDCCH is located, and the other is determined according to the virtual CCE (virtual resource block VRB) index where the ePDCCH is located, and one is based on The physical resource block (Physical Resource Block, abbreviated as PRB) where the PDSCH is located is indexed. It should be noted that the implicit mapping needs to determine the starting position of the PUCCH resource, and the determination of the starting location can be performed in the following two ways: One is to open up a new area for implicit mapping, that is, to define a new one.

The starting position of the PUCCH resource ^ CH, and the other is the continuous mapping of the PUCCH region starting position according to the existing R8 design. In the FDD system, the above mapping has two mapping methods depending on the manner in which the starting position is determined. The following two mapping methods will be described. Method 1: Implicit mapping in the new PUCCH region, "PU _CC H ⁼ " _VRI + W _pucch , where PUCCH layer signaling configuration, " ^VRI is the lowest physical cable block where the corresponding ePDCCH is located |, or," v _RI is the virtual CCE (VRB) lowest index where the corresponding ePDCCH is located, or, " ^VRI is the lowest index of the PRB where the corresponding PDSCH is located.

(1) 3⁄4 r(l) Method 2: Continuous mapping in the resource region already designed by R8, "puccH = " _VRI + ^{+ V} P _UCCH , where A3⁄4 _CCH is configured for high-level signaling, which is compatible in the current downlink subframe. The total number of CCEs in the PDCCH region, " ^VRI is the lowest value of the physical resource block where the corresponding ePDCCH is located, or ^ is the lowest index of the virtual CCE (VRB) where the corresponding _ePD ccH is located, or, "^ is the corresponding PDSCH. PRB lowest index. In the TDD system, there are three ways to map: One is a virtual resource (Virtual Resource, referred to as

VR) is block interleaving for one unit; one is for other interleaving methods in units of VR; one is VR for unit continuous mapping. The three methods are explained below.

1. Block-interleaved mode mapping in units of VR: FIG. 6 is a schematic diagram of a VRB of a TDD according to a preferred embodiment of the present invention. As shown in FIG. 6, it is assumed that one uplink subframe corresponds to four downlink subframes, and each downlink sub-frame The corresponding VR VRBI on the frame represents the virtual resource block index composed of VR. FIG. 7 is a schematic diagram of block interleaving according to a preferred embodiment of the present invention. As shown in FIG. 7, the VRB may be composed of a continuous VR or a discrete VR. At the same time, the resource mapping of the PUCCH is also designed to design a new resource region based on the mapping region of the R8 system, and the parameter ^ccH is introduced to obtain the resource location, and the R8 resource region can also be introduced by ⁷ (the CCE of each downlink subframe corresponding to the uplink subframe) Sum) get the final mapped resource.

2. Continuous mapping mode in units of VR: Still taking FIG. 6 as an example, SP, suppose that one uplink subframe corresponds to four downlink subframes, and the corresponding VR VRBI on each downlink subframe represents a VR. Virtual resource block index. FIG. 8 is a schematic diagram of a continuous mapping according to a preferred embodiment of the present invention. As shown in FIG. 8, the resource mapping of the PUCCH is also designed to design a new resource region based on the mapping region of the R8 system, and the parameter cH is introduced to obtain the resource location, and may also be in the R8. The resource region is obtained by introducing (the total CCE of each downlink subframe corresponding to the uplink subframe) to obtain the final mapping resource. 3. VR-based other interleaving mode mapping: Still taking FIG. 6 as an example, it is assumed that one uplink subframe corresponds to four downlink subframes, and the corresponding VR on each downlink subframe, VRBI represents a VR. Virtual resource block index. FIG. 9 is a schematic diagram of other interleaving manner mapping according to a preferred embodiment of the present invention. As shown in FIG. 9, the resource mapping of the PUCCH is also designed to design a new resource region based on the mapping region of the R8 system, and the parameter cH is introduced to obtain the resource location. The final mapping resource is obtained by introducing (the CCE sum of each downlink subframe corresponding to the uplink subframe) in the R8 resource region. The LTE-Advanced needs to be compatible with LTE users. If the LTE-Advanced aggregated carrier includes the LTE frequency band, the LTE user can access the LTE-Advanced network in the uplink and downlink frequency bands used by the LTE. At this time, the mapping method of the LTE user uplink control channel accessing the LTE-Advanced network is completely the same as the LTE design. The embodiments of the present invention will be described in detail below with reference to the embodiments, so that the technical problems of the present invention can be applied to solve the technical problems, and the implementation process of achieving the technical effects can be fully understood and implemented. For the LTE-Advanced user, acquire the PUCCH by the received high-level signaling channel resource index "PUCCH, by channel resource index of the ACK / NACK carrying semi-persistent PDSCH scheduled by a PUCCH" _CC H carried in the high layer signaling W ^CCH is determined. For LTE-Advanced users, the channel resource index of the PUCCH is jointly determined by the high-level configuration parameters and the DCI dynamic signaling. In the ^CCH, the DCI dynamic signaling may be through the newly added ARI domain, or may be through its existing TPC. For example, the channel resource index "TM of the PUCCH carrying the ACK/NACK of the PDSCH is jointly determined according to the newly added ARI domain of the higher layer signaling W^CCH and the DCI signaling, wherein the W^CCH configures a group of PUCCH resources, The ARI indicates a specific one of the PUCCH resources in the PUCCH resource group. For example, the upper layer parameter ^^^ configures 4 available PUCCH resources, and the ARI field in the DCI signaling is '00', then "is the first of the 4 available PUCCH resources; for example, if the upper layer parameter W^ The CCH is configured with 4 available PUCCH resources, and the ARI field in the DCI signaling is '10', then " _CCH is the third of the 4 available PUCCH resources. For example, the CCH is determined according to an existing indication field in the _CCH and DCI signaling, such as a TPC domain, where the WCHC is configured with a PUCCH-group resource, and the TPC indicates a specific corresponding in the PUCCH resource group. A PUCCH resource. For example, the upper layer parameter ^^^ configures 4 available PUCCH resources, and the TPC field in the DCI signaling is '00', then ^CCH is the first of the 4 available PUCCH resources; for example, if the upper layer parameter A3⁄4 _{The CCH is} configured with 4 available PUCCH resources. The TPC field in the DCI signaling is '10', then "is the third of the 4 available PUCCH resources. For the LTE-Advanced FDD system user, the PUCCH channel resource index can be Obtained in different ways, the following describes the manner of implicit mapping in the newly designed PUCCH region. For example, for LTE-Advanced FDD system users, the channel resource index of the PUCCH carrying the ACK/NACK of the PDSCH is ^CCH is Newly designed PUCCH region implicit mapping, the mapping formula is

"^CCH = «VRI + ^PUCCH, where ^^CCH high-level signaling configuration, "VM is the lowest index of the physical resource block where the corresponding ePDCCH is located; for another example, for LTE-Advanced FDD system users, ACK/ carrying PDSCH The channel resource index "CH" of the PUCCH of the NACK is implicitly mapped in the newly designed PUCCH region, and the mapping formula is "^ ^CCH = " ^VRI + ^N ^' ^cc , where the high-level signaling configuration, " ^VRI is the corresponding ePDCCH Virtual CCE (VRB) minimum index. For example, for the LTE-Advanced FDD system user, the channel resource of the PUCCH carrying the ACK/NACK of the PDSCH is implicitly mapped in the newly designed PUCCH region, and the mapping formula is "^^:" ^^, where ^^CCH high-level signaling configuration, "is the lowest index of the PRB where the corresponding PDSCH is located. For LTE-Advanced FDD system users, the channel resource index of PUCCH can be obtained in different ways, and the PUCCH area designed in R8 implies For example, for the LTE-Advanced FDD system user, the channel resource index of the PUCCH carrying the ACK/NACK of the PDSCH "^CCH is an implicit mapping of the PUCCH region that has been designed in _R8 , and the mapping formula is

^{^{W PUCCH = "VRI + N CCE}} + ^ PUCCH, where, NS _CCH configured as high-layer signaling, ^ CCE is the total number of the current downlink sub-Zhen towel CCE of PDCCH region compatible," v _RI corresponding physical resource is located ePDCCH For example, for LTE-Advanced FDD system users, the channel resource index of the PUCCH carrying the ACK/NACK of the PDSCH "^CCH is an implicit mapping of the PUCCH region that has been designed in R8, and the mapping formula is "PUCCH". = "VRI + ^CCE + ^PUCCH, where, for high-level signaling configuration, ^CCE is the total number of compatible PDCCH region CCEs in the current downlink subframe," ^VRI is the virtual CCE (VRB) lowest index of the corresponding ePDCCH For another example, for LTE-Advanced FDD system users, ACK/NACK carrying PDSCH The channel resource index of the PUCCH is an implicit mapping of the PUCCH region that has been designed in _R8 , and the mapping formula is ^N CCE, where NS _CCH is a high-level signaling configuration, and ^CCE is a compatible PDCCH region CCE in the current downlink subframe. Total, " ^VRI is the lowest index of the PRB where the corresponding PDSCH is located. For LTE-Advanced TDD system users, the channel resource index of PUCCH can be obtained in different ways. For example, for the LTE-Advanced TDD system user, the channel resource index of the PUCCH carrying the ACK/NACK of the PDSCH is designed to design a new resource region map based on the mapping region based on the R8 system.

'KjTotal

The R8 resource region is finally mapped by introducing ⁷ (the sum of CCEs of each downlink subframe corresponding to the uplink subframe).

„0) "(4) «(1) _ _η , jTotal ,

Resources. The mapping formula is divided into two types: ^PUCCH - ^{VRI and} CCE, where

^^^和^ ⁴ !^^ is the high-level signaling configuration, which is the total number of compatible PDCCH region CCEs in the current downlink subframe. " ^VRI uses the unit block interleaving mapping method, assuming that one uplink subframe corresponds to four downlink sub-frames. Frame, the corresponding VR on each downlink subframe is shown in Figure 6. VRBI represents the virtual resource block index formed by VR. The schematic diagram of block interleaving is shown in Figure 7, where VRB can be composed of continuous VR, or For example, for the LTE-Advanced TDD system user, the channel resource index of the PUCCH carrying the ACK/NACK of the PDSCH is designed to design a new resource region map based on the mapping region of the R8 system.

rTotal

„0) "(4) «(1) _ _η , jTotal ,

^^^和^ ⁴ !^^ is a high-level signaling configuration, which is the total number of compatible PDCCH regions CCEs in the current downlink subframe. " ^VRI uses a continuous mapping method, assuming that one uplink subframe corresponds to four downlink subframes, each The corresponding VR on the downlink subframe is shown in Figure 6. VRBI represents the virtual resource block index formed by the VR. The schematic diagram of the continuous mapping is shown in Figure 8. For another example, for the LTE-Advanced TDD system user, the PDSCH is carried. The channel resource index of the PUCCH of the ACK/NACK is designed to map a new resource region outside the mapping area based on the R8 system.

rTotal

-„ , λί ⁽⁴ η ^(ΐ - η KT ^Total N ^m

Resources. The mapping formula is divided into ¹ J for ^{PUCCH and} 〃 CCE ^ ^l , where The _PUCCH is configured for high-level signaling, and the CCE is the total number of compatible PDCCH regions CCEs in the current downlink subframe. "The ^VRI is mapped in other interleaving manners in units of VR. It is assumed that one uplink subframe corresponds to four downlink subframes, and each The corresponding VR on the downlink subframe is shown in Figure 6. VRBI represents the virtual resource block index composed of VR. The mapping of other interleaving modes in VR is shown in Figure 9. The channel resource index for PUCCH is based on the upper layer. The manner in which the ARI domain in the signaling and the DCI signaling are jointly determined is different in the manner in which the primary downlink carrier configuration and the secondary downlink carrier configuration are different. For the LTE-Advanced system user, the UE is configured in In the carrier aggregation scenario, the UE is configured to aggregate two downlink CCs at a certain time, and the UE sends a feedback message in PUCCH format 3 on the uplink. The primary downlink carrier is configured with an ePDCCH or a PDCCH, and the secondary downlink carrier is configured with an ePDCCH. That is, the UE receives the PDSCH of the two carriers in the downlink, and the channel resource index of the PUCCH that carries the ACK/NACK of the PDSCH is jointly determined according to the ARI domain in the high layer signaling and the DCI signaling, where the high layer signaling configuration is a group of PUCCH resources, the ARI field indicates a specific one of the PUCCH resources in the PUCCH resource group. The RP domain reuses the TPC domain of the ePDCCH of the secondary component carrier. If the system is a TDD system, the main component carrier is divided by the counter field DAI=1. The TPC of the other PDCCH/ePDCCH is also used as the ARI. For the LTE-Advanced system user, the UE is configured in the carrier aggregation scenario, assuming that the UE is configured to aggregate two downlink CCs at a certain moment, and the UE adopts PUCCH format 3 in the uplink. The feedback message is sent, where the primary downlink carrier is configured with the ePDCCH, and the secondary downlink carrier is configured with the PDCCH. That is to say, the UE receives the PDSCH of the two carriers at the same time, and the channel resource index of the PUCCH carrying the ACK/NACK of the PDSCH is according to the upper layer. The ARI domain in the signaling and the DCI signaling is jointly determined, where the high layer signaling configures a group of PUCCH resources, and the ARI domain indicates a PUCCH corresponding to the PUCCH resource group. The TPC domain implementation of the PDCCH of the ARI domain reusing the secondary component carrier. If the system is a TDD system, the TPC of the other PDCCH/ePDCCH except the counter field DAI=1 on the primary component carrier is also used as the ARI. The FDD system user, the UE is configured in a carrier aggregation scenario, assuming that the UE is configured to aggregate two downlink CCs at a certain time, and the UE transmits a feedback message in the uplink using the PUCCH format 1 channel selection mode. When indicated, a group of PUCCH resources are configured by high layer signaling, and one of the resources is indicated by the ARI field of the PDCCH/ePDCCH in the secondary component carrier. The PDCCH/ePDCCH or the secondary component carrier dynamically scheduled on the primary component carrier For the PDCCH/ePDCCH without the cross-carrier scheduling, or the PDCCH/ePDCCH carrying the SPS release message on the primary component carrier, for the downlink transmission modes 1, 2, 5, 6, and 7, the PUCCH resource carries the PDCCH/ePDCCH. First One CCE implicit mapping; then for downlink transmission modes 1, 3, 4, 8 and 9, PUCCH resources are implicitly mapped by the first CCE carrying the PDCCH/ePDCCH and the first CCE+1. For the PDSCH transmission and transmission modes 1, 2, 5, 6 and P 7 of the semi-persistent scheduling of the primary carrier, the PUCCH resource is the SPS resource notified by the upper layer; for the transmission mode 3, 4, 8 and 9, the first PUCCH The resource is the SPS resource notified by the upper layer, and the second PUCCH resource is obtained according to the implicit mapping of the first SPS resource. For the LTE-Advanced TDD system user, the UE is configured in a carrier aggregation scenario. Assume that the UE is configured to aggregate two downlink CCs at a certain time, and the UE sends a feedback message in the uplink using the PUCCH format 1 channel selection mode. The PUCCH resource carrying the feedback message is determined as follows: If there is cross-carrier scheduling, and the PDSCH transmission of the primary component carrier is indicated by the corresponding PDCCH, the first CCE corresponding to the PDCCH of the DAI domain equal to 1 and 2 in the primary component carrier corresponds to Two PUCCH resources are obtained. If the PDSCH transmission is not indicated by the corresponding PDCCH, the two PUCCH resources in the primary component carrier correspond to the first CCE of the PDCCH/ePDCCH from the SPS reserved resource and the DAI is equal to 1. The two PUCCH resources of the secondary component carrier are from the first CCE corresponding to the PDCCH/ePDCCH with DAI equal to 1 and P 2 . If there is no cross-carrier scheduling, and the PDSCH transmission of the primary component carrier is indicated by the corresponding PDCCH/ePDCCH, the first CCE of the PDCCH/ePDCCH in which the DAI domain is equal to 1 and P 2 in the primary component carrier obtains two PUCCH resources, Or, if the PDSCH transmission is not indicated by the corresponding PDCCH, the two PUCCH resources in the primary component carrier correspond to the first CCE of the PDCCH/ePDCCH from the SPS reserved resource and the DAI is equal to 1. The two PUCCH resources of the secondary component carrier are from the indication of the ARI. The ARI is a TPC domain that reuses the PDCCH/ePDCCH. In another embodiment, a large bandwidth system PUCCH channel resource determining software is provided, which is used to implement the technical solutions described in the foregoing embodiments and preferred embodiments. In another embodiment, a storage medium is also provided, the software being stored, including but not limited to an optical disk, a floppy disk, a hard disk, a rewritable memory, and the like. Through the foregoing embodiments and the preferred embodiments, the compatibility between the LTE-Advanced system and the LTE Release-8 system can be ensured, which is beneficial to increase the system capacity and scheduling flexibility of the LTE-Advanced system, so that the LTE-Advanced terminal obtains the maximum frequency. Selective gain. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device so that they may be stored in the storage device by the computing device, or they may be separately fabricated into respective integrated circuit modules. Alternatively, multiple modules or steps of them can be implemented as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A method for determining a physical uplink control channel resource of a large bandwidth system, comprising: a user equipment acquiring a channel resource index "^CCH" of a physical uplink control channel PUCCH, where the PUCCH is used to carry an enhanced physical downlink control channel ePDCCH indication A positive acknowledgment/negative acknowledgment ACK/NACK information of the physical downlink shared channel PDSCH; the user equipment determines a resource used by the PDSCH according to the obtained channel resource index "^CCH".

The method according to claim 1, wherein the user equipment acquires the channel resource index "^CCH by one of the following methods or any combination thereof: obtaining by using the received high layer signaling; Downlink control information DCI signaling dynamically indicates acquisition; obtained by implicit mapping.

The method according to claim 2, wherein determining the channel resource index by using the received high layer signaling comprises: determining by using a parameter carried in the high layer signaling.

The method according to claim 2, wherein the obtaining the channel resource index by using a high-level configuration parameter and a DCI signaling dynamic indication "CCH comprises: the user equipment according to the ACK/NACK in the received DCI signaling And the high-level configuration parameter is used to configure a PUCCH resource group, and the domain value of the ARI domain is used by the resource identifier indicating the domain value of the ARI domain and the high-level configuration parameter. And indicating a PUCCH resource available in the PUCCH resource group.

The method according to claim 2, wherein the channel resource index "^CCH" is determined by the high layer configuration parameter and the DCI signaling dynamic indication, including:

The user equipment acquires the channel resource index "^CCH according to the domain value of the TPC domain that is already existing in the received DCI signaling, and the high-level configuration parameter, where the high-level configuration parameter is used to configure one PUCCH. a resource group, the domain value of the TPC domain is used to indicate a PUCCH resource that is available in the PUCCH resource group, or the ARI domain is a dedicated domain in the DCI signaling.

The method according to claim 4 or 5, wherein the user equipment acquires the high-level configuration parameter by using parameters carried in the received high-layer signaling.

The method according to claim 2, wherein, before the user equipment acquires the channel resource index by implicit mapping, the method includes: determining, by the user equipment, a starting location of a channel resource of the PUCCH, The starting location includes a starting location on the newly added frequency domain resource of the PUCCH based on a carrier frequency resource existing in the current large broadband system, or a presence of the PUCCH in an existing large broadband system. The starting position where the frequency resource already exists.

8. The method according to claim 7, wherein, in the frequency division duplex system, in a case where a starting position on a frequency domain resource is added in advance based on a carrier frequency resource existing in the current large broadband system, The obtaining, by the user equipment, the channel resource index by using the implicit mapping manner includes: , where is a high-level signaling configuration parameter, which is a lowest index of a physical resource block where the ePDCCH is located, or, “v _RI is a The virtual CCE lowest index where the _ePDCCH is located, or "v _RI is the lowest index of the PRE where the _PDSCH is located.

The method according to claim 7, wherein, in a frequency division duplex system, in a case where a carrier frequency resource existing in a large broadband system already exists, the user equipment passes the implicit The method for obtaining the channel resource index in the manner of mapping further includes: ^CCE, where is a high-level signaling configuration parameter, and ^CCE is the total number of compatible PDCCH region CCEs in the current downlink subframe, " ^VRI is where the ePDCCH is located. The lowest index of the physical resource block, or, " ^VRI is the lowest index of the virtual CCE where the ePDCCH is located, or, " ^VRI is the lowest index of the PRB where the PDSCH is located.

The method according to claim 2 or 7, wherein, in the time division duplex system, the user equipment acquires the channel resource index by using the implicit mapping manner.

For controlling the total number of channel elements CCEs in the PDCCH region in the current downlink subframe, "v _{RI is} a virtual resource block index composed of corresponding virtual resources on the downlink subframe.

The method according to claim 2 or 7, wherein, in the time division duplex system, the user equipment acquiring the channel resource index by using the implicit mapping manner further includes: "PUCCH = « _V Ri + Nccs + ^PUCCH, where WlicCH is the high-level signaling configuration parameter, ^CCE is the total number of compatible PDCCH region CCEs in the current downlink subframe, and "v _RI is the virtual corresponding to the downlink subframe. The virtual resource block index of the resource.

The method according to claim 10 or 11, wherein the virtual resource block index " ^VRI " formed by the corresponding virtual resource on the downlink subframe is determined by an interleaving manner or a continuous mapping manner, where the interleaving manner is at least Including block interleaving.

A device for determining a physical uplink control channel resource of a large bandwidth system, comprising: an obtaining module, configured to acquire a channel resource index of the uplink control channel PUCCH, where the PUCCH is used to carry an enhanced physical downlink control channel ePDCCH Positive acknowledgment/negative acknowledgment ACK/NACK information of the indicated physical downlink shared channel PDSCH;

And a determining module, configured to determine, according to the obtained channel resource index, a resource used by the PDSCH.

The apparatus according to claim 13, wherein the obtaining module acquires the channel resource index "^CCH by one of the following manners or any combination thereof: obtaining by the received high layer signaling; Downlink control information DCI signaling dynamically indicates acquisition; obtained by implicit mapping.