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CN102316595B - Resource determination method and device for physical uplink control channel (PUCCH) of large-band-width system - Google Patents

Resource determination method and device for physical uplink control channel (PUCCH) of large-band-width system Download PDF

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CN102316595B
CN102316595B CN201110297658.XA CN201110297658A CN102316595B CN 102316595 B CN102316595 B CN 102316595B CN 201110297658 A CN201110297658 A CN 201110297658A CN 102316595 B CN102316595 B CN 102316595B
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pucch
resource
index
channel
signaling
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CN102316595A (en
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戴博
张禹强
陈艺戬
郭森宝
左志松
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明公开了一种大带宽系统物理上行控制信道资源确定方法及装置，该方法包括：用户设备获取物理上行控制信道PUCCH的信道资源索引其中，PUCCH用于承载增强的物理下行控制信道ePDCCH指示的物理下行共享信道PDSCH的肯定确认/否定确认ACK/NACK信息；用户设备根据获取的信道资源索引确定所述PDSCH使用的资源。通过本发明保证了ePDCCH对应HARQ过程正常进行。

The present invention discloses a method and device for determining a physical uplink control channel resource of a large bandwidth system. The method includes: a user equipment acquires a channel resource index of a physical uplink control channel PUCCH Among them, 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; Determine resources used by the PDSCH. The invention ensures that the HARQ process corresponding to the ePDCCH is carried out normally.

Description

Method and device for determining physical uplink control channel resources of large-bandwidth system
Technical Field
The invention relates to the field of communication, in particular to a method and a device for determining physical uplink control channel resources of a large-bandwidth system.
Background
Fig. 1 is a schematic diagram of a frame structure of an FDD (Frequency Division Duplex) mode of an LTE (Long Term Evolution) system according to the related art, where as shown in fig. 1, in the frame structure of the FDD mode, a radio frame (radio frame) of 10ms is composed of twenty slots (slots) with a length of 0.5ms and numbers of 0-19, and slots 2i and 2i +1 constitute a subframe (subframe) i with a length of 1 ms. Fig. 2 is a diagram illustrating a frame structure of a TDD (Time Division Duplex) mode of an LTE (long term Evolution) system according to the related art, where, as shown in fig. 2, a radio frame (radio frame) of 10ms is composed of two half frames (subframes) of 5ms, and a half frame includes 5 subframes (subframes) of 1 ms. Subframe i is defined as 2 slots 2i and 2i +1 of length 0.5 ms. In both frame structures, for Normal CP (Normal Cyclic Prefix), a slot contains 7 symbols with a length of 66.7us, wherein the CP length of the first symbol is 5.21us, and the CP length of the remaining 6 symbols is 4.69 us; for Extended CP, a slot contains 6 symbols, and the CP length of all symbols is 16.67 us.
LTE defines a PDCCH (Physical downlink control channel) to carry scheduling assignments and other control information; a Physical Control Format Indicator Channel (PCFICH) carries information of the number of OFDM symbols used for transmitting a PDCCH in one subframe, and is transmitted on the first OFDM symbol of the subframe, where the frequency position is determined by a system downlink bandwidth and a cell ID. Each PDCCH is composed of a plurality of CCEs (Control Channel elements), and the number of CCEs in each subframe is determined by the number of PDCCHs and a downlink bandwidth. And the CCE of each subframe is numbered according to the sequence of the frequency domain and the time domain.
LTE Release-8 defines 6 bandwidths: 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20 MHz.
LTE-Advanced (Further Advances for E-UTRA) is an evolved version of LTE Release-8. Unless 3GPP TR 25.913 is met or exceeded: all relevant Requirements of "Requirements for Evolved UTRA (E-UTRA) and Evolved UTRAN (E-UTRAN)" are met or exceeded by IMT-Advanced Requirements proposed by ITU-R. Wherein, the requirement of backward compatibility with LTERElease-8 refers to that: the terminal of the LTE area-8 can work in the network of LTE-Advanced; the terminal of LTE-Advanced can work in the network of LTE Release-8.
In addition, LTE-Advanced should be able to operate with different size spectrum configurations, including wider spectrum configurations (e.g., 100MHz contiguous spectrum resources) than LTE Release-8, 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 band, and there is no allocable continuous 100MHz spectrum bandwidth already in this band. One straightforward technique that LTE-Advanced needs to address is to aggregate several contiguous Component carrier frequencies (spectrum) distributed over different frequency bands to form a 100MHz bandwidth that LTE-Advanced can use. That is, for the aggregated spectrum, it is divided into n Component carrier frequencies (spectrum), and the spectrum within each Component carrier frequency (spectrum) is continuous.
Fig. 3 is a diagram of a spectrum arrangement according to the related art, and as shown in fig. 3, there are mainly 3 schemes of the spectrum arrangement, as shown in fig. 3. The square part is the system bandwidth compatible with LTE Release-8, and the oblique line part is the system bandwidth special for LTE-Advanced. Fig. 3a is a spectrum allocation scheme 1, which means that the LTE-Advanced spectrum allocation is composed of 1 LTE-Advanced defined system bandwidth, and the bandwidth is greater than the LTE Release-8 defined system bandwidth. Fig. 3b is a spectrum configuration scheme 2, which means that the LTE-Advanced spectrum configuration is composed of a LTE area-8 defined system bandwidth and a plurality of LTE-Advanced defined system bandwidths through spectrum aggregation (carrier aggregation). Fig. 3c is a spectrum allocation scheme 3, which means that the LTE-Advanced spectrum allocation is composed of multiple system bandwidths defined by LTE Release-8 through spectrum aggregation (carrier aggregation), where the spectrum aggregation may be aggregation of continuous spectrum or aggregation of discontinuous spectrum. The LTE Release-8UE can access a frequency band compatible with the LTE Release-8, and the LTE-A UE can access both the frequency band compatible with the LTE Release-8 and the frequency band compatible with the LTE-Advanced.
Considering the compatibility with LTE Release-8, each component carrier frequency of LTE-Advanced needs to meet the requirement of being able to access to LTE users, which needs to ensure that the channel structure of each component carrier frequency is as consistent as possible with LTE.
At present, in an FDD duplex mode, the number of uplink and downlink available component carrier frequencies may be different in LTE-Advanced, so that each downlink component carrier frequency cannot correspond to a Physical Uplink Control Channel (PUCCH) one by one, and a PUCCH resource index designed in LTE cannot work correctly.
At present, the PUCCH resource index for transmitting HARQ-ACK in the uplink, which is designed by dynamically scheduling PDSCH in an LTE FDD duplex mode, is implicitly mapped through the minimum CCE of the PDCCH allocated to the user on a scheduled downlink subframe. Namely, it isWhereinIs the PUCCH resource index, n, at which the user sends HARQ-ACKCCEIs the first CCE index corresponding to the transmission PDCCH,configured by higher layers. The PDSCH that is semi-statically scheduled is,configured by higher layers.
For PDSCH dynamically scheduled in an LTE TDD duplex mode, PUCCH resource indexes for sending HARQ-ACK in an uplink mode are obtained by block interleaving CCE of PDCCH allocated to the user on a scheduled downlink subframe. Since there may be a configuration in which the number of downlink subframes is greater than the number of uplink subframes in one radio frame in the TDD mode, the concept of a feedback window is defined. The feedback window is all downlink subframes corresponding to the uplink subframe (it should be noted that "corresponding" here means that the downlink subframes all feed back the acknowledgement information in the uplink subframe).
For TDD duplex mode, since there may be a configuration scenario where a downlink subframe is larger than an uplink subframe in one radio frame, there may be a situation where feedback information of multiple downlink subframes is sent in the same uplink subframe. A plurality of downlink subframes corresponding to such one uplink subframe are referred to as feedback windows.
For TDD ACK/NACK bundling or multiplexing mode, when the feedback window is only 1,the determination method comprises the following steps:
for a PDSCH transmission that is indicated by the PDCCH, or a downlink SPS released transmission indicated by the PDCCH,and obtaining by block interleaving mapping. For PDSCH transmission not indicated by PDCCH, thenDetermined by high-level configuration and table 1, table one shows the relationship of PUCCH resource index corresponding signaling, as shown in table one:
table one, PUCCH resource index corresponding signaling relation
For the semi-static Downlink scheduling activation transmission indicated by Downlink Control Information (DCI) signaling, the method comprisesOne of the four resources configured by the higher layer is indicated by the TPC field and the mapping table is given by table one.
At present, in the continuous evolution process of LTE-Advanced, the requirement for the system capacity expansion to support the number of users is continuously increased, and an existing Physical Downlink Control Channel (PDCCH for short) cannot meet the requirement of a more Advanced wireless communication system, so that an ePDCCH (enhanced PDCCH) Channel is introduced in the discussion of 3GPP to enhance PDCCH performance, and a new PDCCH transmission region is introduced at the same time, at this time, how to obtain a Physical Uplink Control Channel (PUCCH) resource for transmitting ACK/NACK corresponding to a PDSCH of the ePDCCH is called a problem to be solved urgently.
Disclosure of Invention
The invention provides a method and a device for determining physical uplink control channel resources of a large-bandwidth system, aiming at the problem of how to obtain PUCCH resources for transmitting ACK/NACK corresponding to PDSCH of ePDCCH, so as to at least solve the problem.
According to an aspect of the present invention, there is provided a method of manufacturing a semiconductor deviceThe method for determining the physical uplink control channel resources of the large bandwidth system comprises the following steps: user Equipment (UE) acquires channel resource index of Physical Uplink Control Channel (PUCCH)The PUCCH is used for carrying positive acknowledgement/negative acknowledgement (ACK/NACK) information of a Physical Downlink Shared Channel (PDSCH) indicated by an enhanced physical downlink control channel (ePDCCH); the user equipment indexes according to the acquired channel resourcesDetermining resources used by the PDSCH.
Preferably, the user equipment obtains the channel resource index by one of the following manners or any combination thereofObtaining through the received high-level signaling; obtaining through high-level configuration parameters and downlink control information DCI signaling dynamic indication; and obtaining by means of implicit mapping.
Preferably, the channel resource index is determined by received higher layer signalingThe method comprises the following steps: and determining through the parameters carried in the high-layer signaling.
Preferably, the channel resource index is obtained through a high-layer configuration parameter and a DCI signaling dynamic indicationThe method comprises the following steps: the user equipment acquires the channel resource index according to the domain value of an ARI (acknowledgement/negative acknowledgement) domain of the ACK/NACK resource indication signaling in the received DCI signaling and the high-level configuration parameterWherein the high-layer configuration parameter is used for configuring one PUCCH resource group,the domain value of the ARI field is used for indicating the PUCCH resources available in the PUCCH resource group.
Preferably, the channel resource indexThe determination through the high-layer configuration parameters and the DCI signaling dynamic indication comprises: the user equipment obtains the channel resource index according to the domain value of the TPC domain existing in the received DCI signaling and the high-level configuration parameterThe high-layer configuration parameter is used for configuring one PUCCH resource group, and the domain value of the TPC field is used for indicating an available PUCCH resource in the PUCCH resource group, or the ARI field is a dedicated field in the DCI signaling.
Preferably, the user equipment obtains the high-level configuration parameters through parameters carried in the received high-level signaling. Preferably, the user equipment obtains the channel resource index by means of implicit mappingPreviously, comprising: the user equipment determines the starting position of the channel resource of the PUCCH, wherein the starting position comprises the starting position of the PUCCH on a frequency domain resource which is increased in advance on the basis of the carrier frequency resource existing in the existing large broadband system, or the starting position of the PUCCH on the carrier frequency resource existing in the current large broadband system.
Preferably, in the fdd system, the ue obtains the channel resource index by the implicit mapping method under the condition of a pre-increased initial position on the frequency domain resource based on the carrier frequency resource existing in the existing large broadband systemThe method comprises the following steps:wherein,is a higher layer signaling configuration parameter, nVRIIs the lowest index of the physical resource block where the ePDCCH is located, or nVRIIs the lowest index of the virtual CCE where the ePDCCH is located, or nVRIIs the lowest index of the PRB where the PDSCH is located.
Preferably, in the frequency division duplex system, under the condition that the carrier frequency resource existing in the current large broadband system already exists at the initial position, the user equipment acquires the channel resource index in the implicit mapping modeFurther comprising:wherein,is a high-layer signaling configuration parameter that,is the total number of compatible PDCCH regions CCE in the current downlink subframe, nVRIIs the lowest index of the physical resource block where the ePDCCH is located, or nVRIIs the lowest index of the virtual CCE where the ePDCCH is located, or nVRIIs the lowest index of the PRB where the PDSCH is located.
Preferably, in the tdd system, the ue obtains the channel resource index by the implicit mappingThe method comprises the following steps:wherein,is to configure the parameters for the higher layer signaling,controlling the total number of CCEs, n, for a compatible PDCCH region in a current downlink subframeVRIAnd the virtual resource block index formed by the corresponding virtual resource on the downlink subframe.
Preferably, in the tdd system, the ue obtains the channel resource index by the implicit mappingFurther comprising:wherein,the parameters are configured for the higher layer signaling,is the total number of compatible PDCCH region CCEs in the current downlink subframe, nVRIAnd the virtual resource block index formed by the corresponding virtual resource on the downlink subframe.
Preferably, the virtual resource block index n is formed by corresponding virtual resources on the downlink subframeVRIThe method comprises the steps of determining through an interleaving mode or a continuous mapping mode, wherein the interleaving mode at least comprises a block interleaving mode.
According to another aspect of the present invention, there is also provided a device for determining physical uplink control channel resources in a large bandwidth system, including: an obtaining module, configured to obtain a channel resource index of an uplink control channel PUCCHWherein the PUCCH is used for carrying enhanced physical downlinkPositive acknowledgement/negative acknowledgement (ACK/NACK) information of a Physical Downlink Shared Channel (PDSCH) indicated by a control channel ePDCCH; a determining module, configured to index according to the acquired channel resourceDetermining resources used by the PDSCH.
Preferably, the obtaining module obtains the channel resource index by one of the following manners or any combination thereofObtaining through the received high-level signaling; obtaining through high-level configuration parameters and downlink control information DCI signaling dynamic indication; and obtaining by means of implicit mapping.
According to the invention, the user equipment is adopted to obtain the channel resource index of the PUCCHWherein, PUCCH is used for carrying ACK/NACK information of PDSCH indicated by ePDCCH, and then indexes are indexed according to the acquired channel resourcesAnd determining resources used by the PUCCH, so that feedback information of the PDSCH corresponding to the ePDCCH can be fed back through the PUCCH in the HARQ process corresponding to the ePDCCH, the normal operation of the HARQ process corresponding to the ePDCCH is ensured, the compatibility of an LTE-Advanced system and an LTE Release-8 system is ensured, and the LTE-Advanced terminal obtains the maximum frequency selectivity gain.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a diagram illustrating a frame structure according to an FDD mode of an LTE system in the related art;
fig. 2 is a diagram illustrating a frame structure according to a TDD mode of an LTE system in 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 large bandwidth system PUCCH channel resource determination method according to an embodiment of the present invention;
fig. 5 is a block diagram of a large bandwidth system PUCCH channel resource determination apparatus according to an embodiment of the present invention;
FIG. 6 is a diagram of VRB of TDD according to the preferred embodiment of the present invention;
FIG. 7 is a block interleaving diagram in accordance with a preferred embodiment of the present invention;
FIG. 8 is a schematic illustration of a sequential mapping according to a preferred embodiment of the present invention;
fig. 9 is a diagram illustrating mapping of other interleaving manners according to the preferred embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
An ePDCCH channel is introduced in 3GPP to enhance PDCCH performance, and a new PDCCH transmission region is introduced at the same time, in this embodiment, a method for obtaining PUCCH channel resources for ACK/NACK transmission corresponding to a PDSCH of an ePDCCH is provided, which ensures that an HARQ process corresponding to the ePDCCH is performed normally, and ensures compatibility of an LTE-Advanced system and an LTE erelease-8 system, so that an LTE-Advanced terminal obtains a maximum frequency selectivity gain.
Fig. 4 is a flowchart of a method for determining large bandwidth system PUCCH channel resources according to an embodiment of the present invention, and as shown in fig. 4, the method includes the following steps:
step S402, the user equipment acquires the channel resource index of PUCCHThe PUCCH is used for carrying ACK/NACK information of a PDSCH indicated by the ePDCCH.
Step S404, the UE indexes according to the acquired channel resourceDetermining resources used by the PDSCH.
Through the above steps of this embodiment, the user equipment is adopted to obtain the channel resource index of the PUCCHThe PUCCH is used for carrying ACK/NACK information of the PDSCH indicated by the ePDCCH; and the user equipment indexes according to the acquired channel resourcesAnd feeding back ACK/NACK information of the PDSCH indicated by the ePDCCH, thereby ensuring that the HARQ process corresponding to the ePDCCH is normally carried out, and ensuring the compatibility of an LTE-Advanced system and an LTE Release-8 system, so that the LTE-Advanced terminal obtains the maximum frequency selectivity gain.
As a preferred embodiment of the present invention, the ue may obtain the channel resource index in multiple waysE.g., by received higher layer signaling; obtaining through high-level configuration parameters and downlink control information DCI signaling dynamic indication; and obtaining by means of implicit mapping. Need to make sure thatIt is noted that the user equipment may be acquired by one of the above-described acquisition manners or any combination thereof. In this way, channel resource index is obtainedThe method is convenient, and the selection of the acquisition mode has diversity.
Preferably, the channel resource index is determined by received higher layer signalingThe method comprises the following steps: determined by parameters carried in higher layer signaling. This way of acquisition is relatively simple.
As another preferred implementation of this embodiment, the channel resource index is obtained through a higher layer configuration parameter and DCI signaling dynamic indicationThe method can be implemented in various ways, for example, the user equipment can obtain the channel resource index according to the domain value of the ARI domain of the ACK/NACK resource indication signaling in the received DCI signaling and the higher layer configuration parameterThe high-level configuration parameters are used for configuring one PUCCH resource group, and the domain value of the ARI domain is used for indicating the PUCCH resources available in the PUCCH resource group; for another example, the user equipment may also obtain the channel resource index according to the domain value of the TPC field existing in the received DCI signaling and the higher layer configuration parameterThe high-level configuration parameter is used for configuring one PUCCH resource group, and the domain value of the TPC domain is used for indicating the PUCCH resource available in the PUCCH resource group, or the ARI domain is a proprietary domain in the DCI signaling.
Preferably, in the foregoing embodiment, the ue may obtain the higher layer configuration parameters through parameters carried in the received higher layer signaling.
As another preferred implementation manner of this embodiment, the ue obtains the channel resource index in an implicit mapping mannerBefore, the user equipment further needs to determine a starting position of a channel resource of the PUCCH, where the starting position includes a starting position on a frequency domain resource that is pre-increased on the basis of a carrier frequency resource existing in the current large broadband system by the PUCCH, or a starting position where the carrier frequency resource existing in the current large broadband system by the PUCCH already exists.
In the following FDD and TDD systems, the ue obtains the channel resource index by implicit mappingThe following description will be given.
In the frequency division duplex system, under the condition of an initial position on a frequency domain resource which is increased in advance on the basis of carrier frequency resources existing in the existing large broadband system, user equipment acquires a channel resource index in an implicit mapping modeThe method comprises the following steps:wherein,is a higher layer signaling configuration parameter, nVRIIs the lowest index of the physical resource block where the ePDCCH is located, or nVRIIs the lowest index of the virtual CCE where the ePDCCH is located, or nVRIIs the lowest index of the PRB where the PDSCH is located.
In addition, in the frequency division duplex system, under the condition of the initial position of the carrier frequency resource existing in the current large broadband system, the user equipment passes throughMethod for obtaining channel resource index by implicit mappingFurther comprising:wherein,is a high-layer signaling configuration parameter that,is the total number of compatible PDCCH regions CCE in the current downlink subframe, nVRIIs the lowest index of the physical resource block where the ePDCCH is located, or nVRIIs the lowest index of the virtual CCE where the ePDCCH is located, or nVRIIs the lowest index of the PRB where the PDSCH is located.
In the time division duplex system, the user equipment acquires the channel resource index by means of implicit mappingThe method comprises the following steps:wherein,is to configure the parameters for the higher layer signaling,controlling the total number of CCEs, n, for a compatible PDCCH region in a current downlink subframeVRIAnd the virtual resource block index formed by the corresponding virtual resource on the downlink subframe. Also comprises the following steps of (1) preparing,wherein,the parameters are configured for the higher layer signaling,is the total number of compatible PDCCH region CCEs in the current downlink subframe, nVRIAnd the virtual resource block index formed by the corresponding virtual resource on the downlink subframe.
Preferably, the virtual resource block index n is formed by corresponding virtual resources on the downlink subframeVRIThe method is determined by an interleaving mode or a continuous mapping mode, wherein the interleaving mode at least comprises a block interleaving mode.
In this embodiment, a device for determining a PUCCH channel resource of a large bandwidth system is further provided, where the device is configured to implement the foregoing embodiment and the preferred embodiments thereof, and details of the foregoing description are omitted, and various modules related to the device are described below. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the systems and methods described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.
Fig. 5 is a block diagram of a large bandwidth system PUCCH channel resource determination apparatus according to an embodiment of the present invention, and as shown in fig. 5, the apparatus includes an obtaining module 50 and a determining module 52. The various modules of the device and their functions are explained below.
An obtaining module 50, configured to obtain a channel resource index of an uplink control channel PUCCHThe PUCCH is used for bearing the positive acknowledgement/negative acknowledgement (ACK/NACK) information of a Physical Downlink Shared Channel (PDSCH) indicated by an enhanced physical downlink control channel (ePDCCH); a determining module 52 is connected to the obtaining module 50, the determining module 52 is configured to index according to the obtained channel resourceDetermining resources used by the PDSCH.
Preferably, the obtaining module 50 obtains the channel resource index by one of the following manners or any combination thereofObtaining through the received high-level signaling; obtaining through high-level configuration parameters and downlink control information DCI signaling dynamic indication; and obtaining by means of implicit mapping.
In the preferred embodiment, a method for determining a flexible indication uplink feedback channel supporting LTE-Advanced of an ePDCCH channel and compatible with LTE Release-8 is provided, where in the preferred embodiment, a User Equipment (UE) carries a channel resource index of a PUCCH carrying ACK/NACK of a PDSCH indicated by an ePDCCHObtained by one or more of the following ways: the method comprises the steps of firstly, obtaining through high-level signaling; the second mode is determined by high-level configuration and DCI signaling dynamic indication; the mode three, determined by implicit means. These three acquisition modes will be described below.
The first mode and the higher layer signaling obtaining mode are specifically expressed as follows:according to higher layer signallingAnd (4) determining.
For the second mode, the higher layer configuration parameter and the DCI signaling dynamic indication are specifically,determining according to a high-layer signaling X and an ARI (ACK/NACK Resource indicator) signaling, wherein the high-layer signaling X configures a group of PUCCH resources, and the ARI indicates a specific corresponding PUCCH Resource in the PUCCH Resource group, wherein the ARI signaling is a signaling newly added in DCI, or the ARI signaling is an existing indication domain in the DCI signaling, such as a TPC domain.
As for the third mode, the implicit mapping mode specifically has three modes, one is determined according to the index of the Physical Resource block where the ePDCCH is located, the other is determined according to the index of the virtual CCE (virtual Resource block VRB) where the ePDCCH is located, and the other is determined according to the index of the Physical Resource block (PRB for short) where the PDSCH is located.
It should be noted that implicit mapping requires determining a starting position of a PUCCH resource, and the determination of the starting position may be performed in two ways: one is to open up a new region for implicit mapping, i.e. define the starting position of a new PUCCH resourceThe other is the starting position of the PUCCH region designed according to the existing R8And (4) continuously mapping.
In the FDD system, there are two mapping methods for the above mapping depending on the determination method of the start position, and the two mapping methods will be described below.
Method one, implicit mapping in the new PUCCH region,wherein,higher layer signaling configuration, nVRIMinimum index for physical resource block where corresponding ePDCCH is located, or nVRIIs the lowest index of the virtual cce (vrb) where the corresponding ePDCCH is located,or, nVRIIs the lowest index of the PRB where the corresponding PDSCH is located.
Method two, the designed resource region is mapped continuously in R8,wherein,for the configuration of the higher layer signaling,is the total number of compatible PDCCH region CCEs in the current downlink subframe, nVRIMinimum index for physical resource block where corresponding ePDCCH is located, or nVRIIs the lowest index of the virtual CCE (VRB) where the corresponding ePDCCH is located, or nVRIThe PRB lowest index where the corresponding PDSCH is located;
in the TDD system, there are three mapping methods: one is Virtual Resource (VR) unit block interleaving; one is to perform other interleaving modes in units of VRs; one is VR unit continuous mapping. These three modes are explained below.
1. Mapping in a block interleaving manner by taking VR as a unit:
fig. 6 is a schematic diagram of a VRB of TDD according to a preferred embodiment of the present invention, and as shown in fig. 6, it is assumed that a certain uplink subframe corresponds to 4 downlink subframes, and a corresponding VR on each downlink subframe, and a VRBI represents a virtual resource block index formed by VRs. Fig. 7 is a block interleaving diagram according to the preferred embodiment of the present invention, and as shown in fig. 7, VRBs may be formed by continuous VRs or discrete VRs. Meanwhile, the resource mapping of PUCCH is also divided into a new resource region designed based on the outside of the R8 system mapping region, and parameters are introduced at the same timeObtaining resource location, and introducing into R8 resource region(the CCE sum of each downlink subframe corresponding to the uplink subframe) to obtain the final mapping resource.
2. Continuous mapping in VR units:
still taking fig. 6 as an example for explanation, that is, it is assumed that a certain uplink subframe corresponds to 4 downlink subframes, and VR and VRBI corresponding to each downlink subframe represent a virtual resource block index formed by VR. Fig. 8 is a schematic diagram of continuous mapping according to a preferred embodiment of the present invention, and as shown in fig. 8, the resource mapping of PUCCH is also divided into design of new resource regions based on the outside of the R8 system mapping region, and parameters are introduced at the same timeObtaining resource location, and introducing into R8 resource region(the CCE sum of each downlink subframe corresponding to the uplink subframe) to obtain the final mapping resource.
3. Mapping in other interleaving manners in units of VR:
still taking fig. 6 as an example for explanation, it is assumed that a certain uplink subframe corresponds to 4 downlink subframes, and VR corresponding to each downlink subframe, VRBI represents a virtual resource block index formed by VR. Fig. 9 is a schematic diagram of mapping in other interleaving manners according to the preferred embodiment of the present invention, and as shown in fig. 9, the resource mapping of PUCCH is also based on designing a new resource region outside the R8 system mapping region, and introducing parametersObtaining resource location, and introducing into R8 resource region(the CCE sum of each downlink subframe corresponding to the uplink subframe) to obtain the final mapping resource.
Because the LTE-Advanced needs to be compatible with LTE users, and carriers aggregated by the LTE-Advanced include LTE frequency bands, the LTE users can access the LTE-Advanced network in uplink and downlink frequency bands used by the designed LTE. The mapping method of the LTE user uplink control channel accessed to the LTE-Advanced network is completely the same as the design of the LTE.
The following embodiments of the present invention will be described in detail with reference to the accompanying examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.
For LTE-Advanced users, channel resource index of PUCCH is acquired through received high-layer signalingChannel resource index of PUCCH capable of carrying ACK/NACK of semi-statically scheduled PDSCHCarried according to higher layer signallingAnd (4) determining.
For LTE-Advanced users, the channel resource index of PUCCH is determined by the high-layer configuration parameter and DCI dynamic signaling togetherThe DCI dynamic signaling may be determined through its newly added ARI field or its existing TPC field.
For example, channel resource index of PUCCH carrying ACK/NACK for PDSCHAccording to higher layer signallingDetermined in conjunction with the ARI field newly added for DCI signaling,wherein,and configuring a group of PUCCH resources, wherein the ARI indicates a specific corresponding PUCCH resource in the PUCCH resource group. E.g. higher layer parameters4 available PUCCH resources are configured, the ARI field in the DCI signaling is '00', thenIs the first of 4 available PUCCH resources; also for example, if the higher layer parameters4 available PUCCH resources are configured, the ARI field in the DCI signaling is '10', thenThe third of the 4 available PUCCH resources.
As another example of the present invention,according to higher layer signallingAnd an existing indication field in DCI signaling, such as TPC field determination, wherein,a set of PUCCH resources is configured, and the TPC indicates a specific corresponding PUCCH resource in the PUCCH resource set. E.g. higher layer parameters4 available PUCCH resources are configured, the TPC domain in DCI signaling is '00', thenIs 4 available PUCsA first one of the CH resources; also for example, if the higher layer parameters4 available PUCCH resources are configured, the TPC domain in DCI signaling is '10', thenThe third of the 4 available PUCCH resources.
Channel resource index of PUCCH for LTE-Advanced FDD system userThe implicit mapping in the newly designed PUCCH area can be obtained in different ways, which is described below.
For example, for LTE-Advanced FDD system users, the channel resource index of PUCCH carrying ACK/NACK for PDSCHIs implicitly mapped in a newly designed PUCCH region, and the mapping formula isWherein,higher layer signaling configuration, nVRIIndexing the physical resource block where the corresponding ePDCCH is located at the lowest; as another example, for LTE-Advanced FDD system users, the channel resource index of PUCCH carrying ACK/NACK for PDSCHIs implicitly mapped in a newly designed PUCCH region, and the mapping formula isWherein,higher layer signaling configuration, nVRIThe lowest index for the virtual cce (vrb) where the corresponding ePDCCH is located. As another example, for LTE-Advanced FDD system users, the channel resource index of PUCCH carrying ACK/NACK for PDSCHIs implicitly mapped in a newly designed PUCCH region, and the mapping formula isWherein,higher layer signaling configuration, nVRIIs the lowest index of the PRB where the corresponding PDSCH is located.
Channel resource index of PUCCH for LTE-Advanced FDD system userIt can be obtained by different ways, and the way of implicit mapping in the PUCCH region that has been designed in R8 is explained.
For example, for LTE-Advanced FDD system users, the channel resource index of PUCCH carrying ACK/NACK for PDSCHIs implicitly mapped in the PUCCH region designed in the R8, and the mapping formula isWherein,for the configuration of the higher layer signaling,is the total number of compatible PDCCH region CCEs in the current downlink subframe, nVRIIndexing the physical resource block where the corresponding ePDCCH is located at the lowest; as another example, for LTE-AdvancChannel resource index of PUCCH for carrying ACK/NACK of PDSCH for ed FDD system userIs implicitly mapped in the PUCCH region designed in the R8, and the mapping formula isWherein,for the configuration of the higher layer signaling,is the total number of compatible PDCCH region CCEs in the current downlink subframe, nVRIThe lowest index of the virtual CCE (VRB) where the corresponding ePDCCH is located; as another example, for LTE-Advanced FDD system users, the channel resource index of PUCCH carrying ACK/NACK for PDSCHIs implicitly mapped in the PUCCH region designed in the R8, and the mapping formula isWherein,for the configuration of the higher layer signaling,is the total number of compatible PDCCH region CCEs in the current downlink subframe, nVRIIs the lowest index of the PRB where the corresponding PDSCH is located.
Channel resource index of PUCCH for LTE-Advanced TDD system userMay be obtained in different ways.
For example, for LTE-Advanced TDD systemsUser, channel resource index of PUCCH carrying ACK/NACK of PDSCHThe mapping of a new resource region is designed outside the mapping region based on the R8 system, and the mapping can also be designed outside the mapping region based on the R8 resource region by introducing(the CCE sum of each downlink subframe corresponding to the uplink subframe) to obtain the final mapping resource. The mapping formulas are respectivelyAndwherein,andfor the configuration of the higher layer signaling,is the total number of compatible PDCCH region CCEs in the current downlink subframe, nVRIBy adopting a unit block interleaving mapping method, it is assumed that a certain uplink subframe corresponds to 4 downlink subframes, VR corresponding to each downlink subframe is as shown in fig. 6, and VRBI represents a virtual resource block index formed by VRs. A block interleaving scheme is shown in fig. 7, where VRBs may be made up of continuous VRs or discrete VRs.
As another example, for LTE-Advanced TDD system users, the channel resource index of PUCCH carrying ACK/NACK for PDSCHThe mapping of a new resource region is designed outside the mapping region based on the R8 system, and the mapping is also carried outCan be introduced in the R8 resource region(the CCE sum of each downlink subframe corresponding to the uplink subframe) to obtain the final mapping resource. The mapping formulas are respectivelyAndwherein,andfor the configuration of the higher layer signaling,is the total number of compatible PDCCH region CCEs in the current downlink subframe, nVRIBy adopting a continuous mapping method, it is assumed that a certain uplink subframe corresponds to 4 downlink subframes, VR corresponding to each downlink subframe is as shown in fig. 6, and VRBI represents a virtual resource block index formed by VRs. A schematic diagram of the sequential mapping is shown in fig. 8.
As another example, for LTE-Advanced TDD system users, the channel resource index of PUCCH carrying ACK/NACK for PDSCHThe mapping of a new resource region is designed outside the mapping region based on the R8 system, and the mapping can also be designed outside the mapping region based on the R8 resource region by introducing(the CCE sum of each downlink subframe corresponding to the uplink subframe) to obtain the final mapping resource. The mapping formulas are respectivelyAndwherein,andfor the configuration of the higher layer signaling,is the total number of compatible PDCCH region CCEs in the current downlink subframe, nVRIMapping in other interleaving modes with VR as a unit is adopted, a certain uplink subframe corresponds to 4 downlink subframes, the corresponding VR on each downlink subframe is as shown in FIG. 6, and VRBI represents a virtual resource block index formed by VRs. Then the mapping diagram of other interleaving ways in VR units is shown in fig. 9.
Channel resource index for PUCCHAccording to the common determination mode of the ARI domains in the high-level signaling and the DCI signaling, because the configuration of the main downlink carrier and the configuration of the auxiliary downlink carrier are different, the implementation modes thereof are also different:
for an LTE-Advanced system user, a UE is configured in a carrier aggregation scenario, and it is assumed that at a certain time, the UE is configured to aggregate two downlink CCs, and the UE sends a feedback message in uplink in PUCCH format 3. The primary downlink carrier is configured with ePDCCH or PDCCH, and the secondary downlink carrier is configured with ePDCCH. That is, when the UE receives PDSCH of two carriers in downlink, the UE carries the channel resource index of PUCCH of ACK/NACK of PDSCHAccording to ARI domain common determination in high layer signaling and DCI signaling, wherein, high layer signaling and DCI signaling are combinedThe layer signaling configures a group of PUCCH resources, and the ARI field indicates a specific corresponding PUCCH resource in the PUCCH resource group. The ARI domain is realized by reusing the TPC domain of the ePDCCH of the secondary component carrier. If the system is a TDD system, TPCs of other PDCCHs/ePDCCHs on the main component carrier except for the counter field DAI of 1 are also used as ARIs.
For an LTE-Advanced system user, a UE is configured in a carrier aggregation scenario, and it is assumed that at a certain time, the UE is configured to aggregate two downlink CCs, and the UE sends a feedback message in uplink in PUCCH format 3. The primary downlink carrier is configured with ePDCCH, and the secondary downlink carrier is configured with PDCCH. That is, when the UE receives PDSCH of two carriers in downlink, the UE carries the channel resource index of PUCCH of ACK/NACK of PDSCHAnd jointly determining according to ARI domains in the high-level signaling and the DCI signaling, wherein the high-level signaling configures a group of PUCCH resources, and the ARI domain indicates a specific corresponding PUCCH resource in the PUCCH resource group. The ARI domain reuses the TPC domain implementation of the PDCCH of the secondary component carrier. If the system is a TDD system, TPCs of other PDCCHs/ePDCCHs on the main component carrier except for the counter field DAI of 1 are also used as ARIs.
For an LTE-Advanced FDD system user, a UE is configured in a carrier aggregation scenario, and it is assumed that at a certain time, the UE is configured to aggregate two downlink CCs, and the UE transmits a feedback message in an uplink in a PUCCH format 1 channel selection mode. When the secondary component carrier has no cross-carrier scheduling indication, a group of PUCCH resources are configured through high-level signaling, and one of the resources is indicated through an ARI (uplink control information) domain of the PDCCH/ePDCCH (physical downlink control channel/physical uplink control channel) in the secondary component carrier. For a PDCCH/ePDCCH dynamically scheduled on a primary component carrier, or a PDCCH/ePDCCH without cross-carrier scheduling on a secondary component carrier, or a PDCCH/ePDCCH carrying SPS release messages on the primary component carrier, for downlink transmission modes 1, 2, 5, 6 and 7, PUCCH resources are implicitly mapped through a first CCE carrying the PDCCH/ePDCCH; for downlink transmission modes 1, 3, 4, 8 and 9, the PUCCH resource is implicitly mapped by the first CCE and the first CCE +1 carrying PDCCH/ePDCCH. When the PDSCH of the semi-persistent scheduling on the main carrier is transmitted and transmitted in the modes 1, 2, 5, 6 and 7, the PUCCH resource is SPS resource notified by a high layer; for transmission modes 3, 4, 8 and 9, the first PUCCH resource is SPS resource notified by the higher layer, and the second PUCCH resource is implicitly mapped according to the first SPS resource.
For an LTE-Advanced TDD system user, a UE is configured in a carrier aggregation scenario, and it is assumed that at a certain time, the UE is configured to aggregate two downlink CCs, and the UE transmits a feedback message in an uplink in a PUCCH format 1 channel selection mode. Then, the PUCCH resource carrying the feedback message is determined as follows:
if cross-carrier scheduling exists and PDSCH transmission of the primary component carrier is indicated by the corresponding PDCCH, the first CCE of the PDCCH with the DAI field equal to 1 and 2 in the primary component carrier correspondingly obtains two PUCCH resources, and 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 with the DAI equal to 1 and from SPS reserved resources. The two PUCCH resources of the secondary component carrier are from the first CCE corresponding to PDCCH/ePDCCH with DAI equal to 1 and 2.
If no cross-carrier scheduling is performed and the PDSCH transmission of the primary component carrier is indicated by the corresponding PDCCH/ePDCCH, the first CCE of the PDCCH/ePDCCH with DAI field equal to 1 and 2 in the primary component carrier corresponds to obtaining two PUCCH resources, or if the PDSCH transmission is indicated by no corresponding PDCCH, the two PUCCH resources in the primary component carrier correspond to the first CCE from the SPS reserved resource and the PDCCH/ePDCCH with DAI equal to 1. The two PUCCH resources of the secondary component carrier are from the indication of the ARI. ARI is the TPC field reusing PDCCH/ePDCCH.
In another embodiment, there is further provided software for determining PUCCH channel resources in a large bandwidth system, where the software is used to implement the technical solutions described in the foregoing embodiments and the preferred embodiments.
In another embodiment, a storage medium is provided, wherein the software is stored in the storage medium, and the storage medium includes, but is not limited to, an optical disc, a floppy disc, a hard disc, a rewritable memory, and the like.
By the embodiment and the preferred embodiment, the compatibility of the LTE-Advanced system and the LTE Release-8 system can be ensured, the system capacity and the scheduling flexibility of the LTE-Advanced system can be increased, and the LTE-Advanced terminal can obtain the maximum frequency selective gain.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, or they may be separately fabricated into various integrated circuit modules, or multiple modules or steps thereof may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (15)

1. A method for determining physical uplink control channel resources of a large bandwidth system is characterized by comprising the following steps:
user Equipment (UE) acquires channel resource index of Physical Uplink Control Channel (PUCCH)The PUCCH is used for carrying positive acknowledgement/negative acknowledgement (ACK/NACK) information of a Physical Downlink Shared Channel (PDSCH) indicated by an enhanced physical downlink control channel (ePDCCH);
the above-mentionedThe user equipment indexes according to the acquired channel resourcesDetermining resources used by the PDSCH.
2. The method of claim 1, wherein the UE obtains the channel resource index by one of the following methods or any combination thereofObtaining through the received high-level signaling; obtaining through high-level configuration parameters and downlink control information DCI signaling dynamic indication; and obtaining by means of implicit mapping.
3. The method of claim 2, wherein the channel resource index is determined by received higher layer signalingThe method comprises the following steps: and determining through the parameters carried in the high-layer signaling.
4. The method of claim 2, wherein the channel resource index is obtained through a higher layer configuration parameter and DCI signaling dynamic indicationThe method comprises the following steps:
the user equipment acquires the channel resource index according to the domain value of an ARI (acknowledgement/negative acknowledgement) domain of the ACK/NACK resource indication signaling in the received DCI signaling and the high-level configuration parameterWherein the high-layer configuration parameter is used for configuring one PUCCH resource group, and the domain value of the ARI field is used for indicating the PUCCH resource group to be availableThe PUCCH resource(s).
5. The method of claim 2, wherein the channel resource indexThe determination through the high-layer configuration parameters and the DCI signaling dynamic indication comprises:
the user equipment obtains the channel resource index according to the domain value of the TPC domain existing in the received DCI signaling and the high-level configuration parameterThe high-layer configuration parameter is used for configuring one PUCCH resource group, and the domain value of the TPC domain is used for indicating the PUCCH resources available in the PUCCH resource group, or the ARI domain is a proprietary domain in the DCI signaling.
6. The method according to claim 4 or 5, wherein the UE obtains the higher layer configuration parameters through parameters carried in the received higher layer signaling.
7. The method of claim 2, wherein the UE obtains the channel resource index by implicit mappingPreviously, comprising: the user equipment determines the starting position of the channel resource of the PUCCH, wherein the starting position comprises the starting position of the PUCCH on a newly added frequency domain resource on the basis of a carrier frequency resource existing in an existing large broadband system, or the starting position of the PUCCH on an existing carrier frequency resource existing in a current large broadband system.
8. The method of claim 7,in the frequency division duplex system, under the condition that the initial position on the frequency domain resource is increased in advance on the basis of the carrier frequency resource existing in the current large broadband system, the user equipment acquires the channel resource index in the implicit mapping modeThe method comprises the following steps:
wherein,is a higher layer signaling configuration parameter, nVRIIs the lowest index of the physical resource block where the ePDCCH is located, or nVRIIs the lowest index of the virtual CCE where the ePDCCH is located, or nVRIIs the lowest index of the PRB where the PDSCH is located.
9. The method according to claim 7, wherein in a frequency division duplex system, in case of an initial location where a carrier frequency resource existing in an existing large broadband system already exists, the ue obtains the channel resource index by means of the implicit mappingFurther comprising:
wherein,is a high-layer signaling configuration parameter that,is the total number of compatible PDCCH regions CCE in the current downlink subframe, nVRIIs as followsThe lowest index of the physical resource block where the ePDCCH is located, or nVRIIs the lowest index of the virtual CCE where the ePDCCH is located, or nVRIIs the lowest index of the PRB where the PDSCH is located.
10. The method according to claim 2 or 7, wherein in a time division duplex system, the UE obtains the channel resource index by means of the implicit mappingThe method comprises the following steps:
wherein,is to configure the parameters for the higher layer signaling,controlling the total number of CCEs, n, for a compatible PDCCH region in a current downlink subframeVRIAnd the virtual resource block index formed by the corresponding virtual resource on the downlink subframe.
11. The method according to claim 2 or 7, wherein in a time division duplex system, the UE obtains the channel resource index by means of the implicit mappingFurther comprising:
wherein,the parameters are configured for the higher layer signaling,is the total number of compatible PDCCH region CCEs in the current downlink subframe, nVRIAnd the virtual resource block index formed by the corresponding virtual resource on the downlink subframe.
12. The method according to claim 10, wherein the virtual resource block index n is formed by corresponding virtual resources on the downlink subframeVRIThe method comprises the steps of determining through an interleaving mode or a continuous mapping mode, wherein the interleaving mode at least comprises a block interleaving mode.
13. The method according to claim 11, wherein the virtual resource block index n is formed by corresponding virtual resources on the downlink subframeVRIThe method comprises the steps of determining through an interleaving mode or a continuous mapping mode, wherein the interleaving mode at least comprises a block interleaving mode.
14. A device for determining physical uplink control channel resources in a large bandwidth system, comprising:
an obtaining module, configured to obtain a channel resource index of an uplink control channel PUCCHThe PUCCH is used for carrying positive acknowledgement/negative acknowledgement (ACK/NACK) information of a Physical Downlink Shared Channel (PDSCH) indicated by an enhanced physical downlink control channel (ePDCCH);
and a determining module, configured to determine resources used by the PDSCH according to the acquired channel resource index.
15. The apparatus of claim 14, wherein the obtaining module obtains the channel resource index by one of the following manners or any combination thereofObtaining through the received high-level signaling; obtaining through high-level configuration parameters and downlink control information DCI signaling dynamic indication; and obtaining by means of implicit mapping.
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