CN103517427B - Ascending control channel transmission and method of reseptance and equipment - Google Patents

Ascending control channel transmission and method of reseptance and equipment Download PDF

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CN103517427B
CN103517427B CN201210212421.1A CN201210212421A CN103517427B CN 103517427 B CN103517427 B CN 103517427B CN 201210212421 A CN201210212421 A CN 201210212421A CN 103517427 B CN103517427 B CN 103517427B
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pdcch
resource
terminal
cluster
feedback information
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CN103517427A (en
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林亚男
赵锐
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Abstract

The embodiment of the invention discloses a kind of ascending control channel transmission and method of reseptance and equipment, relate to wireless communication technology field, the problem how uplink feedback information corresponding for Physical Downlink Control Channel E PDCCH for solving to strengthen is transmitted on PUCCH.In this programme, terminal chooses an E PDCCH resource bunch from B the E PDCCH resource bunch at the E PDCCH place of this terminal, according to the resource of the E PDCCH transmitting this terminal in the E PDCCH resource bunch chosen, determine the Physical Uplink Control Channel PUCCH resource of uplink feedback information corresponding for E PDCCH for transmitting this terminal；The PUCCH resource determined is transmitted uplink feedback information.Use the present invention, solve the problem how uplink feedback information corresponding for E PDCCH is transmitted on PUCCH.

Description

Uplink control channel transmission and receiving method and equipment
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a method and apparatus for transmitting and receiving an uplink control channel.
Background
As shown in fig. 1, in the Long Term Evolution (Long Term Evolution, LTE) system, a Physical Downlink Control Channel (PDCCH) is transmitted in each radio subframe, and the PDCCH and a Physical Downlink Shared Channel (PDSCH) for transmitting Downlink data form a Time Division Multiplexing (TDM) multiplexing relationship. The PDCCH is transmitted through the first N Orthogonal Frequency Division Multiplexing (OFDM) symbols of one downlink subframe, where N may have values of 1,2,3,4, and N =4 is only allowed to occur in a system with a system bandwidth of 1.4 MHz.
In the process of continuing the evolution of the long term evolution Advanced (LTE-Advanced) system, coordinated multi-point transmission (COMP) and an enhanced multi-user multi-antenna (MU-MIMO) transmission scheme are being researched. One possible scenario of COMP is that a macro base station and a plurality of distributed Remote Radio Heads (RRHs) logically form a cell, and the coverage area and the number of users accessing the cell are both greatly increased compared to the original LTE system. Meanwhile, the widespread use of enhanced MU-MIMO has led to a significant increase in the number of users served within a cell. Therefore, higher requirements are put on the capacity of the PDCCH, and the existing LTE PDCCH design cannot meet the requirements.
To solve the above-mentioned problem of PDCCH resource limitation and insufficient capacity, one solution is to transmit an Enhanced PDCCH (E-PDCCH) in the PDSCH region in one downlink subframe, as shown in fig. 2, the conventional PDCCH is called Legacy PDCCH.
In the discussion of the E-PDCCH of LTE release 11 (Rel-11), it has been determined that the E-PDCCH supports two modes of frequency domain continuous (localized) transmission and frequency domain distributed (distributed) transmission, and is applied to different scenes. In general, the localized transmission mode is mostly used in a scenario where a base station can obtain more accurate channel information fed back by a terminal, and interference of an adjacent cell is not very severe along with subframe change, at this time, the base station selects a continuous frequency resource with better quality to transmit the E-PDCCH for the terminal according to Channel State Information (CSI) fed back by the terminal, and performs precoding/beamforming processing to improve transmission performance. In the case that channel information cannot be accurately obtained or neighbor cell interference varies violently and unpredictably with subframes, it is necessary to transmit the E-PDCCH in a distributed transmission mode, i.e., using frequency resources which are discontinuous in frequency for transmission, so as to obtain frequency diversity gain.
In an LTE system, when transmitting acknowledgement/negative acknowledgement (ACK/NACK) information corresponding to a PDSCH scheduled by a PDCCH or a PDCCH instructing release of semi-persistent scheduling (SPS) resources using a Physical Uplink Control Channel (PUCCH) format (format) 1a/1b, the information corresponds to a PUCCH resource number usedAnd determining according to the CCE number occupied by the PDCCH. By the design, the reserved PUCCH resources in the system can be effectively reduced, namely the number of the reserved maximum dynamic PUCCH resources is equal to the maximum number of downlink PDCCHs, reservation for the maximum number of users in a cell is not needed, and the maximum number of the PDCCHs is far smaller than the number of the users in the cell.
In the process of implementing the invention, the inventor finds that the following technical problems exist in the prior art:
when the E-PDCCH is transmitted by adopting a Distributed transmission mode, how ACK/NACK information corresponding to the E-PDCCH is transmitted on the PUCCH does not have a specific implementation scheme at present.
Disclosure of Invention
The embodiment of the invention provides a method and equipment for transmitting and receiving an uplink control channel, which are used for solving the problem of how to transmit uplink feedback information corresponding to an E-PDCCH on a PUCCH.
A method for transmitting an uplink control channel includes:
the method comprises the steps that a terminal carries out E-PDCCH detection on A enhanced physical downlink control channel E-PDCCH resource clusters in a downlink subframe, the E-PDCCH resource cluster where the E-PDCCH of the terminal is located is determined according to a detection result, the number of the E-PDCCH resource clusters where the E-PDCCH of the terminal is located is B, A, B is an integer larger than 1, and B is not larger than A;
the terminal selects one E-PDCCH resource cluster from the B determined E-PDCCH resource clusters, and determines a Physical Uplink Control Channel (PUCCH) resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the resource for transmitting the E-PDCCH of the terminal in the selected E-PDCCH resource cluster;
and the terminal transmits the uplink feedback information on the determined PUCCH resource.
A method for transmitting an uplink control channel includes:
a base station transmits E-PDCCH of a terminal on B E-PDCCH resource clusters in a downlink subframe; the B E-PDCCH resource clusters are B of A E-PDCCH resource clusters for E-PDCCH detection of the terminal; wherein A, B are integers greater than 1 and B is not greater than A;
the base station selects one E-PDCCH resource cluster from the B E-PDCCH resource clusters, and determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the resources of the E-PDCCH of the terminal transmitted in the selected E-PDCCH resource cluster;
and the base station receives the uplink feedback information sent by the terminal on the determined PUCCH resource.
A terminal, the terminal comprising:
a downlink channel detection unit, configured to perform E-PDCCH detection on a number of enhanced physical downlink control channel E-PDCCH resource clusters in a downlink subframe, and determine, according to a detection result, an E-PDCCH resource cluster in which the E-PDCCH of the terminal is located, where the number of the E-PDCCH resource clusters in which the E-PDCCH of the terminal is located is B, where A, B are integers greater than 1, and B is not greater than a;
a resource cluster selection unit, configured to select one E-PDCCH resource cluster from the determined B E-PDCCH resource clusters;
an uplink resource determining unit, configured to determine, according to the resource of the E-PDCCH transmitting the terminal in the selected E-PDCCH resource cluster, a physical uplink control channel PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal;
and the uplink feedback unit is used for transmitting the uplink feedback information on the determined PUCCH resource.
A base station, the base station comprising:
a downlink transmission unit, configured to transmit the E-PDCCH of the terminal on B E-PDCCH resource clusters in a downlink subframe; the B E-PDCCH resource clusters are B of A E-PDCCH resource clusters for E-PDCCH detection of the terminal; wherein A, B are integers greater than 1 and B is not greater than A;
a resource cluster selection unit, configured to select one E-PDCCH resource cluster from the B E-PDCCH resource clusters;
an uplink resource determining unit, configured to determine, according to the resource of the E-PDCCH transmitting the terminal in the selected E-PDCCH resource cluster, a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal;
and the uplink feedback receiving unit is used for receiving the uplink feedback information sent by the terminal on the determined PUCCH resource.
In the scheme provided by the embodiment of the invention, a terminal carries out E-PDCCH detection on A E-PDCCH resource clusters in a downlink subframe, determines B E-PDCCH resource clusters where the E-PDCCH of the terminal is located according to a detection result, selects one E-PDCCH resource cluster from the determined B E-PDCCH resource clusters, and determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the resources for transmitting the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; and then transmitting the uplink feedback information on the determined PUCCH resource. Therefore, the problem of how to send the uplink feedback information corresponding to the E-PDCCH on the PUCCH is solved by adopting the scheme.
In the scheme provided by the embodiment of the invention, a base station transmits E-PDCCH of a terminal on B E-PDCCH resource clusters in a downlink subframe; selecting one E-PDCCH resource cluster from the B E-PDCCH resource clusters, and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the resources of the E-PDCCH of the terminal transmitted in the selected E-PDCCH resource cluster; and then receiving the uplink feedback information sent by the terminal on the determined PUCCH resource. Therefore, the problem of how to receive the uplink feedback information corresponding to the E-PDCCH of the terminal on the PUCCH is solved by adopting the scheme.
Drawings
Fig. 1 is a schematic diagram illustrating a multiplexing relationship between a control region and a data region in a downlink subframe in the prior art;
fig. 2 is a diagram illustrating an enhanced PDCCH structure in the prior art;
FIG. 3 is a diagram illustrating enhanced PDCCH resource partitioning in an embodiment of the present invention;
FIG. 4 is a schematic flow chart of a method provided by an embodiment of the present invention;
FIG. 5 is a schematic flow chart of another method provided by the embodiment of the present invention;
FIG. 6a is a schematic flow chart according to a first embodiment of the present invention;
FIG. 6b is a schematic flow chart of the second embodiment of the present invention;
FIG. 6c is a schematic flow chart of the second embodiment of the present invention;
fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention.
Detailed Description
Firstly, when the E-PDCCH is transmitted by adopting the Distributed transmission mode, the resources mapped by the E-PDCCH are explained as follows:
as shown in FIG. 3, the E-PDCCH mapped resource, i.e. the resource for transmitting the E-PDCCH, comprises A E-PDCCH resource clusters (cluster), and one E-PDCCH cluster comprises N control channel resource sets SiEach SiContains M control resource units Tj(e.g., Resource Element Group (REG)), T contained in different SijDifferent. E-PDCCH of one terminal occupies at least two TsjTransmission of the at least two TsjBelonging to at least two E-PDCCH resource clusters, preferably, the E-PDCCH of one terminal occupies Y M TjTransmitting; wherein A is an integer greater than 1; n is an integer of not less than 1, M is an integer of not less than 1, and Y is an integer of not less than 1.
In order to solve the problem of how to transmit uplink feedback information corresponding to an E-PDCCH on a PUCCH when the E-PDCCH is transmitted by adopting a Distributed transmission mode, embodiments of the present invention provide two uplink control channel transmission methods.
Referring to fig. 4, a first uplink control channel transmission method provided in the embodiment of the present invention includes the following steps:
step 40: the terminal carries out E-PDCCH detection on A E-PDCCH resource clusters in a downlink subframe, and determines the E-PDCCH resource cluster where the E-PDCCH of the terminal is located according to a detection result, wherein the number of the E-PDCCH resource clusters where the E-PDCCH of the terminal is located is B, A, B is an integer greater than 1, and B is not greater than A;
step 41: the terminal selects one E-PDCCH resource cluster from the B determined E-PDCCH resource clusters, and determines a Physical Uplink Control Channel (PUCCH) resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the resource for transmitting the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; here, the resource for transmitting the E-PDCCH of the terminal in the selected E-PDCCH resource cluster may include a physical resource, an antenna port, a scrambling identifier on the antenna port, and the like.
Step 42: and the terminal transmits the uplink feedback information on the determined PUCCH resource.
In step 41, the terminal selects one E-PDCCH resource cluster from the B determined E-PDCCH resource clusters, and the specific implementation may adopt one of the following two ways:
firstly, a terminal selects an E-PDCCH resource cluster which is indicated by a base station through signaling in advance from B determined E-PDCCH resource clusters, wherein the E-PDCCH resource cluster indicated by the base station is one of the B E-PDCCH resource clusters; the signaling may be downlink control signaling or the like.
Secondly, the terminal selects one E-PDCCH resource cluster from the B determined E-PDCCH resource clusters according to a predetermined method. For example, the terminal may determine to select a few resource clusters of the B E-PDCCH resource clusters according to a Cell-Radio Network Temporary Identifier (C-RNTI) corresponding to the terminal, and select one E-PDCCH resource cluster from the B E-PDCCH resource clusters according to a determination result. For example, if Y = C-RNTI mod C is determined according to C-RNTI corresponding to the terminal, the Yth E-PDCCH resource cluster is selected from B E-PDCCH resource clusters, wherein C = A or C = B.
In step 41, the terminal determines a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the resource of the E-PDCCH of the terminal transmitted in the selected E-PDCCH resource cluster, and the specific implementation may adopt one of the following three ways:
the first method is as follows: the terminal determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster;
the specific implementation can be as follows: the terminal determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number U of a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; for example, PUCCH resource number n is calculated by a predetermined formulaPUCCHF (U), e.g. nPUCCH＝U+NPUCCHIn which N isPUCCHBy base stations via higher layer messagesConfiguring; or,
the terminal is according to the number U of a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, and the number n of the selected E-PDCCH resource clusterclusterDetermining PUCCH resources used for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal; for example, a predetermined formula calculates the PUCCH resource number nPUCCH＝f(U,ncluster) E.g. nPUCCH=ncluster·N+U+NPUCCHWherein N is the maximum PUCCH resource number corresponding to one E-PDCCH resource cluster and can be configured or predetermined by a base station, and N isPUCCHConfigured by the base station through higher layer signaling.
The second method comprises the following steps: and the terminal determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster.
The specific implementation can be as follows: the terminal determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number U of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; for example, PUCCH resource number n is calculated by a predetermined formulaPUCCHF (U), e.g. nPUCCH＝2·(U-7)+NPUCCHIn which N isPUCCHConfigured by a base station through high-level signaling; or,
the terminal controls the number U of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the number n of the selected E-PDCCH resource clusterclusterDetermining PUCCH resources used for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal; for example, a predetermined formula calculates the PUCCH resource number nPUCCH＝f(U,ncluster) E.g. nPUCCH=ncluster·N+2·(U-7)+NPUCCHWherein N is the maximum PUCCH resource number corresponding to one E-PDCCH resource cluster and can be configured or preset by the base stationContract first, NPUCCHConfigured by the base station through higher layer signaling.
The third method comprises the following steps: and the terminal determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the scrambling identifier on the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster.
The specific implementation can be as follows: the terminal numbers U according to an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, and scrambling marks n on the antenna portSCIDDetermining PUCCH resources used for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal; for example, PUCCH resource number n is calculated by a predetermined formulaPUCCH=f(U,nSCID) E.g. nPUCCH=2·(U-7)+nSCID+NPUCCHIn which N isPUCCHConfigured by a base station through high-level signaling; or,
the terminal numbers U and scrambling marks n on the antenna port according to the antenna port number corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource clusterSCIDAnd the number n of the selected E-PDCCH resource clusterclusterDetermining PUCCH resources used for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal; for example, a predetermined formula calculates the PUCCH resource number nPUCCH=f(U,nSCID,ncluster) E.g. nPUCCH=ncluster·N+2·(U-7)+nSCID+NPUCCHWherein N is the maximum PUCCH resource number corresponding to one E-PDCCH resource cluster and can be configured or predetermined by a base station, and N isPUCCHConfigured by the base station through higher layer signaling.
The control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster is as follows: the first control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster may, of course, be any control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster.
Referring to fig. 5, a second uplink control channel transmission method according to the embodiment of the present invention includes the following steps:
step 50: a base station transmits E-PDCCH of a terminal on B E-PDCCH resource clusters in a downlink subframe; b E-PDCCH resource clusters are B of A E-PDCCH resource clusters for E-PDCCH detection of the terminal; wherein A, B are integers greater than 1 and B is not greater than A;
step 51: the base station selects one E-PDCCH resource cluster from the B E-PDCCH resource clusters, and determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the resources of the E-PDCCH of the terminal transmitted in the selected E-PDCCH resource cluster; here, the resource for transmitting the E-PDCCH of the terminal in the selected E-PDCCH resource cluster may include a physical resource, an antenna port, a scrambling code on the antenna port, and the like.
Step 52: and the base station receives the uplink feedback information sent by the terminal on the determined PUCCH resource.
In step 51, the base station selects one E-PDCCH resource cluster from the B E-PDCCH resource clusters, and the specific implementation may adopt one of the following two ways:
firstly, a base station selects an E-PDCCH resource cluster which is indicated to a terminal by the base station through a signaling in advance from B E-PDCCH resource clusters, wherein the E-PDCCH resource cluster indicated by the base station is one of the B E-PDCCH resource clusters; the signaling may be downlink control signaling or the like.
Secondly, the base station selects one E-PDCCH resource cluster from the B E-PDCCH resource clusters according to a predetermined method. For example, the base station determines to select the first resource cluster of the B E-PDCCH resource clusters according to the cell radio network temporary identifier C-RNTI corresponding to the terminal, and selects one E-PDCCH resource cluster from the B E-PDCCH resource clusters according to the determination result. For example, if Y = C-RNTI mod C is determined according to C-RNTI corresponding to the terminal, the Yth E-PDCCH resource cluster is selected from B E-PDCCH resource clusters, wherein C = A or C = B.
In step 51, the base station determines a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the resource of the E-PDCCH of the terminal transmitted in the selected E-PDCCH resource cluster, and the specific implementation may adopt one of the following three ways:
in the first mode, a base station determines PUCCH resources for transmitting uplink feedback information corresponding to an E-PDCCH of a terminal according to a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in a selected E-PDCCH resource cluster;
the specific implementation can be as follows: the base station determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number U of a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; for example, PUCCH resource number n is calculated by a predetermined formulaPUCCHF (U), e.g. nPUCCH＝U+NPUCCHIn which N isPUCCHConfigured by a base station through high-level signaling; or,
the base station numbers U according to a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, and the number n of the selected E-PDCCH resource clusterclusterDetermining PUCCH resources used for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal; for example, a predetermined formula calculates the PUCCH resource number nPUCCH＝f(U,ncluster) E.g. nPUCCH=ncluster·N+U+NPUCCHWherein N is the maximum PUCCH resource number corresponding to one E-PDCCH resource cluster and can be configured or predetermined by a base station, and N isPUCCHConfigured by the base station through higher layer signaling.
And secondly, the base station determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster.
The specific implementation can be as follows: base station based on presenceTaking the number U of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the E-PDCCH resource cluster, and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal; for example, PUCCH resource number n is calculated by a predetermined formulaPUCCHF (U), e.g. nPUCCH＝2·(U-7)+NPUCCHIn which N isPUCCHConfigured by a base station through high-level signaling; or,
the base station controls the number U of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the number n of the selected E-PDCCH resource clusterclusterDetermining PUCCH resources used for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal; for example, a predetermined formula calculates the PUCCH resource number nPUCCH＝f(U,ncluster) E.g. nPUCCH=ncluster·N+2·(U-7)+NPUCCHWherein N is the maximum PUCCH resource number corresponding to one E-PDCCH resource cluster and can be configured or predetermined by a base station, and N isPUCCHConfigured by the base station through higher layer signaling.
And thirdly, the base station determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the scrambling identifier on the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster.
The specific implementation can be as follows: the base station numbers U according to an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, and scrambling marks n on the antenna portSCIDDetermining PUCCH resources used for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal; for example, PUCCH resource number n is calculated by a predetermined formulaPUCCH=f(U,nSCID) E.g. nPUCCH=2·(U-7)+nSCID+NPUCCHIn which N isPUCCHConfigured by a base station through high-level signaling; or,
the base station selects E-PDCCH resource cluster according to the E value of the terminalAntenna port number U corresponding to one control resource unit occupied by PDCCH, scrambling mark n on the antenna portSCIDAnd the number n of the selected E-PDCCH resource clusterclusterDetermining PUCCH resources used for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal; for example, a predetermined formula calculates the PUCCH resource number nPUCCH=f(U,nSCID,ncluster) E.g. nPUCCH=ncluster·N+2·(U-7)+nSCID+NPUCCHWherein N is the maximum PUCCH resource number corresponding to one E-PDCCH resource cluster and can be configured or predetermined by a base station, and N isPUCCHConfigured by the base station through higher layer signaling.
The control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster is as follows: the first control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster may, of course, be any control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster.
The invention is illustrated below with reference to specific examples:
the first embodiment is as follows:
as shown in FIG. 6a, the E-PDCCH of UE1 is in the control channel resource set S of cluster11Control resource unit T of1And T2And a set S of control channel resources of cluster25Control resource unit T of1And T2Carrying out transmission; control channel resource set S of E-PDCCH of UE2 at cluster39Control resource unit T of1And a set S of control channel resources of cluster413Control resource unit T of1Carrying out transmission; control channel resource set S of E-PDCCH of UE3 at cluster39Control resource unit T of2And a set S of control channel resources of cluster413Control resource unit T of2And carrying out transmission.
The base station indicates that the cluster of the UE1 is cluster1, the cluster of the UE2 is cluster3 and the cluster of the UE3 is cluster4 through downlink control signaling.
UE1 determines the first T used in cluster1iBelonging to S1, i.e. U =1, further determining n from UPUCCH. UE2 determines the first T used in cluster3iBelonging to S9, i.e. U =9, further determining n from UPUCCH. UE3 determines the first T used in cluster4iBelonging to S13, i.e. U =13, further determining n from UPUCCH。
Description of the drawings: each UE can also determine the corresponding cluster according to the C-RNTI, and the description is omitted here.
Example two:
as shown in FIG. 6b, the E-PDCCH of UE1 is in the control channel resource set S of cluster11Control resource unit T of1Control channel resource set S of cluster25Control resource unit T of1Control channel resource set S of cluster39Control resource unit T of1Control channel resource set S of cluster413Control resource unit T of1Carrying out transmission; control channel resource set S of E-PDCCH of UE2 at cluster11Control resource unit T of2And a set S of control channel resources of cluster25Control resource unit T of2And carrying out transmission.
The base station indicates that the cluster of the UE1 is cluster2 and indicates that the cluster of the UE2 is cluster1 through the downlink control signaling.
The method comprises the following steps: UE1 determining T used in cluster21Belong to S1I.e. U =1, further n is determined from cluster2 and U =1PUCCH. UE2 determining T used in cluster11Belong to S1I.e. U =1, further n is determined from cluster1 and U =1PUCCH。
The method 2 comprises the following steps: UE1 determining T used in cluster21Transmission using antenna port 7I.e. U =7, further n is determined from cluster2 and U =7PUCCH. UE2 determining T used in cluster11Using antenna port 7 for transmission, i.e. U =7, further n is determined from cluster1 and U =7PUCCH。
Description of the drawings: each UE can also determine the corresponding cluster according to the C-RNTI, and the description is omitted here.
Example three:
as shown in FIG. 6c, the E-PDCCH of UE1 and UE2 are both in the control channel resource set S of cluster11Control resource unit T of1Control channel resource set S of cluster25Control resource unit T of1The transmissions are made using scrambling identity n on antenna port 7, but used by UE1SCID=0 scrambling identity n on antenna port used by UE2SCID=1。
The base station indicates that the cluster of the UE1 is cluster1 and indicates that the cluster of the UE2 is cluster1 through the downlink control signaling.
The method comprises the following steps: UE1 determining T used in cluster11Transmitting using antenna port 7, i.e. U =7, further according to scrambling identity n on antenna portSCIDDetermination of n =0 and U =7PUCCH. UE2 determining T used in cluster11Transmitting using antenna port 7, i.e. U =7, further according to scrambling identity n on antenna portSCIDDetermination of n =1 and U =7PUCCH。
The method 2 comprises the following steps: UE1 determining T used in cluster11Transmission using antenna port 7, i.e. U =7, further according to cluster1, scrambling identity n on antenna portSCIDDetermination of n =0 and U =7PUCCH. UE2 determining T used in cluster11Transmission using antenna port 7, i.e. U =7, further according to cluster1, scrambling identity n on antenna portSCIDDetermination of n =1 and U =7PUCCH。
Description of the drawings: each UE can also determine the corresponding cluster according to the C-RNTI, and the description is omitted here.
Referring to fig. 7, an embodiment of the present invention provides a terminal, where the terminal includes:
a downlink channel detection unit 70, configured to perform E-PDCCH detection on a number of enhanced physical downlink control channel E-PDCCH resource clusters in a downlink subframe, and determine, according to a detection result, an E-PDCCH resource cluster in which the E-PDCCH of the terminal is located, where the number of the E-PDCCH resource clusters in which the E-PDCCH of the terminal is located is B, where A, B are integers greater than 1, and B is not greater than a;
a resource cluster selecting unit 71, configured to select one E-PDCCH resource cluster from the determined B E-PDCCH resource clusters;
an uplink resource determining unit 72, configured to determine, according to the resource of the E-PDCCH transmitting the terminal in the selected E-PDCCH resource cluster, a physical uplink control channel PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal;
an uplink feedback unit 73, configured to transmit the uplink feedback information on the determined PUCCH resource.
Further, the resource cluster selecting unit 71 is configured to:
selecting one E-PDCCH resource cluster which is indicated by a base station through signaling in advance from the B determined E-PDCCH resource clusters, wherein the E-PDCCH resource cluster indicated by the base station is one of the B E-PDCCH resource clusters; or,
and selecting one E-PDCCH resource cluster from the B determined E-PDCCH resource clusters according to a pre-agreed method.
Further, the resource cluster selecting unit 71 selects one E-PDCCH resource cluster from the B determined E-PDCCH resource clusters according to a pre-agreed method, which specifically includes:
and determining and selecting the first resource cluster of the B E-PDCCH resource clusters according to the cell radio network temporary identifier C-RNTI corresponding to the terminal, and selecting one E-PDCCH resource cluster from the B E-PDCCH resource clusters according to the determination result.
Further, the uplink resource determining unit 72 is configured to:
when each E-PDCCH resource cluster comprises at least one control channel resource set, each control channel resource set comprises at least one control resource unit, and the control resource units contained in different control channel resource sets are different:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the scrambling identifier on the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster.
Further, the uplink resource determining unit 72 determines, according to a control channel resource set corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, a PUCCH resource used for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal, specifically including:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of a control channel resource set corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the number of the selected E-PDCCH resource cluster.
Further, the uplink resource determining unit 72 determines, according to an antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, a PUCCH resource used for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal, and specifically includes:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the number of the selected E-PDCCH resource cluster.
Further, the uplink resource determining unit 72 determines, according to the scrambling identifier on the antenna port corresponding to the control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, the PUCCH resource for transmitting the uplink feedback information corresponding to the E-PDCCH of the terminal, specifically including:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the scrambling identifier on the antenna port; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, the scrambling identifier on the antenna port and the number of the selected E-PDCCH resource cluster.
Further, one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster is: and the first control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster.
Referring to fig. 8, an embodiment of the present invention provides a base station, where the base station includes:
a downlink transmission unit 80, configured to transmit the E-PDCCH of the terminal on the B E-PDCCH resource clusters in the downlink subframe; the B E-PDCCH resource clusters are B of A E-PDCCH resource clusters for E-PDCCH detection of the terminal;
a resource cluster selecting unit 81, configured to select one E-PDCCH resource cluster from the B E-PDCCH resource clusters;
an uplink resource determining unit 82, configured to determine, according to the resource of the E-PDCCH transmitting the terminal in the selected E-PDCCH resource cluster, a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal;
and an uplink feedback receiving unit 83, configured to receive the uplink feedback information sent by the terminal on the determined PUCCH resource.
Further, the resource cluster selecting unit 81 is configured to:
selecting one E-PDCCH resource cluster which is indicated to a terminal by the base station through a signaling in advance from the B E-PDCCH resource clusters, wherein the E-PDCCH resource cluster indicated by the base station is one of the B E-PDCCH resource clusters; or,
and selecting one E-PDCCH resource cluster from the B E-PDCCH resource clusters according to a pre-agreed method.
Further, the resource cluster selecting unit 81 selects one E-PDCCH resource cluster from the B E-PDCCH resource clusters according to a pre-agreed method, which specifically includes:
and determining and selecting the first resource cluster of the B E-PDCCH resource clusters according to the cell radio network temporary identifier C-RNTI corresponding to the terminal, and selecting one E-PDCCH resource cluster from the B E-PDCCH resource clusters according to the determination result.
Further, the uplink resource determining unit 82 is configured to:
when each E-PDCCH resource cluster comprises at least one control channel resource set, each control channel resource set comprises at least one control resource unit, and the control resource units contained in different control channel resource sets are different:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the scrambling identifier on the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster.
Further, the uplink resource determining unit 82 determines, according to a control channel resource set corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, a PUCCH resource used for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal, specifically including:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of a control channel resource set corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the number of the selected E-PDCCH resource cluster.
Further, the uplink resource determining unit 82 determines, according to an antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, a PUCCH resource used for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal, and specifically includes:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the number of the selected E-PDCCH resource cluster.
Further, the uplink resource determining unit 82 determines, according to the scrambling identifier of the antenna port corresponding to the control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, the PUCCH resource for transmitting the uplink feedback information corresponding to the E-PDCCH of the terminal, specifically including:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the scrambling identifier on the antenna port; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, the scrambling identifier on the antenna port and the number of the selected E-PDCCH resource cluster.
Further, one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster is: and the first control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster.
In conclusion, the beneficial effects of the invention include:
in the scheme provided by the embodiment of the invention, a terminal carries out E-PDCCH detection on A E-PDCCH resource clusters in a downlink subframe, determines B E-PDCCH resource clusters where the E-PDCCH of the terminal is located according to a detection result, selects one E-PDCCH resource cluster from the determined B E-PDCCH resource clusters, and determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the resources for transmitting the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; and then transmitting the uplink feedback information on the determined PUCCH resource. Therefore, the problem of how to send the uplink feedback information corresponding to the E-PDCCH on the PUCCH is solved by adopting the scheme.
In the scheme provided by the embodiment of the invention, a base station transmits E-PDCCH of a terminal on B E-PDCCH resource clusters in a downlink subframe; selecting one E-PDCCH resource cluster from the B E-PDCCH resource clusters, and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the resources of the E-PDCCH of the terminal transmitted in the selected E-PDCCH resource cluster; and then receiving the uplink feedback information sent by the terminal on the determined PUCCH resource. Therefore, the problem of how to receive the uplink feedback information corresponding to the E-PDCCH of the terminal on the PUCCH is solved by adopting the scheme.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (28)

1. A method for uplink control channel transmission, the method comprising:
the method comprises the steps that a terminal carries out E-PDCCH detection on A enhanced physical downlink control channel E-PDCCH resource clusters in a downlink subframe, the E-PDCCH resource cluster where the E-PDCCH of the terminal is located is determined according to a detection result, the number of the E-PDCCH resource clusters where the E-PDCCH of the terminal is located is B, A, B is an integer larger than 1, and B is not larger than A;
the terminal selects one E-PDCCH resource cluster from the B determined E-PDCCH resource clusters, and determines a Physical Uplink Control Channel (PUCCH) resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the resource for transmitting the E-PDCCH of the terminal in the selected E-PDCCH resource cluster;
and the terminal transmits the uplink feedback information on the determined PUCCH resource.
2. The method of claim 1, wherein the selecting, by the terminal, one E-PDCCH resource cluster from among the B determined E-PDCCH resource clusters specifically comprises:
the terminal selects an E-PDCCH resource cluster indicated by the base station in advance through signaling from the B determined E-PDCCH resource clusters, wherein the E-PDCCH resource cluster indicated by the base station is one of the B E-PDCCH resource clusters; or,
and the terminal selects one E-PDCCH resource cluster from the B determined E-PDCCH resource clusters according to a predetermined method.
3. The method of claim 2, wherein the terminal selects one E-PDCCH resource cluster from the determined B E-PDCCH resource clusters according to a pre-agreed method, specifically comprising:
and the terminal determines to select the first resource cluster of the B E-PDCCH resource clusters according to the cell radio network temporary identifier C-RNTI corresponding to the terminal, and selects one E-PDCCH resource cluster from the B E-PDCCH resource clusters according to the determination result.
4. The method of claim 1, wherein each E-PDCCH resource cluster comprises at least one set of control channel resources, each set of control channel resources comprises at least one control resource element, and different sets of control channel resources comprise different control resource elements;
the terminal determines a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the resource for transmitting the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, and the method specifically comprises the following steps:
the terminal determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
the terminal determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and the terminal determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the scrambling identifier on the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster.
5. The method of claim 4, wherein the terminal determines a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to a control channel resource set corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, and specifically includes:
the terminal determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and the terminal determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of a control channel resource set corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the number of the selected E-PDCCH resource cluster.
6. The method of claim 4, wherein the terminal determines, according to an antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal, and specifically includes:
the terminal determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and the terminal determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the number of the selected E-PDCCH resource cluster.
7. The method according to claim 4, wherein the terminal determines, according to the scrambling identifier of the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, the PUCCH resource for transmitting the uplink feedback information corresponding to the E-PDCCH of the terminal, and specifically includes:
the terminal determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the scrambling identifier on the antenna port; or,
and the terminal determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, the scrambling identifier on the antenna port and the number of the selected E-PDCCH resource cluster.
8. A method for uplink control channel transmission, the method comprising:
a base station transmits E-PDCCH of a terminal on B E-PDCCH resource clusters in a downlink subframe; the B E-PDCCH resource clusters are B of A E-PDCCH resource clusters for E-PDCCH detection of the terminal; wherein A, B are integers greater than 1 and B is not greater than A;
the base station selects one E-PDCCH resource cluster from the B E-PDCCH resource clusters, and determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the resources of the E-PDCCH of the terminal transmitted in the selected E-PDCCH resource cluster;
and the base station receives the uplink feedback information sent by the terminal on the determined PUCCH resource.
9. The method of claim 8, wherein the base station selects one E-PDCCH resource cluster from among B E-PDCCH resource clusters, and specifically comprises:
the base station selects an E-PDCCH resource cluster which is indicated to the terminal by the base station through signaling in advance from the B E-PDCCH resource clusters, and the E-PDCCH resource cluster indicated by the base station is one of the B E-PDCCH resource clusters; or,
and the base station selects one E-PDCCH resource cluster from the B E-PDCCH resource clusters according to a pre-agreed method.
10. The method of claim 9, wherein the base station selects one E-PDCCH resource cluster from the B E-PDCCH resource clusters according to a pre-agreed method, specifically comprising:
and the base station determines to select the first resource cluster of the B E-PDCCH resource clusters according to the cell radio network temporary identifier C-RNTI corresponding to the terminal, and selects one E-PDCCH resource cluster from the B E-PDCCH resource clusters according to the determination result.
11. The method of claim 8, wherein each E-PDCCH resource cluster comprises at least one set of control channel resources, each set of control channel resources comprises at least one control resource element, and different sets of control channel resources comprise different control resource elements;
the base station determines a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the resource for transmitting the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, and the method specifically comprises the following steps:
the base station determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
the base station determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and the base station determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the scrambling identifier on the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster.
12. The method of claim 11, wherein the base station determines, according to a control channel resource set corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal, specifically includes:
the base station determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and the base station determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of a control channel resource set corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the number of the selected E-PDCCH resource cluster.
13. The method of claim 11, wherein the base station determines, according to an antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal, and specifically includes:
the base station determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and the base station determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the number of the selected E-PDCCH resource cluster.
14. The method of claim 11, wherein the base station determines, according to the scrambling identifier of the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, the PUCCH resource for transmitting the uplink feedback information corresponding to the E-PDCCH of the terminal, specifically includes:
the base station determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the scrambling identifier on the antenna port; or,
and the base station determines PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, the scrambling identifier on the antenna port and the number of the selected E-PDCCH resource cluster.
15. A terminal, characterized in that the terminal comprises:
a downlink channel detection unit, configured to perform E-PDCCH detection on a number of enhanced physical downlink control channel E-PDCCH resource clusters in a downlink subframe, and determine, according to a detection result, an E-PDCCH resource cluster in which the E-PDCCH of the terminal is located, where the number of the E-PDCCH resource clusters in which the E-PDCCH of the terminal is located is B, where A, B are integers greater than 1, and B is not greater than a;
a resource cluster selection unit, configured to select one E-PDCCH resource cluster from the determined B E-PDCCH resource clusters;
an uplink resource determining unit, configured to determine, according to the resource of the E-PDCCH transmitting the terminal in the selected E-PDCCH resource cluster, a physical uplink control channel PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal;
and the uplink feedback unit is used for transmitting the uplink feedback information on the determined PUCCH resource.
16. The terminal of claim 15, wherein the resource cluster selecting unit is configured to:
selecting one E-PDCCH resource cluster which is indicated by a base station through signaling in advance from the B determined E-PDCCH resource clusters, wherein the E-PDCCH resource cluster indicated by the base station is one of the B E-PDCCH resource clusters; or,
and selecting one E-PDCCH resource cluster from the B determined E-PDCCH resource clusters according to a pre-agreed method.
17. The terminal of claim 16, wherein the resource cluster selecting unit selects one E-PDCCH resource cluster from the B determined E-PDCCH resource clusters according to a pre-agreed method, which specifically includes:
and determining and selecting the first resource cluster of the B E-PDCCH resource clusters according to the cell radio network temporary identifier C-RNTI corresponding to the terminal, and selecting one E-PDCCH resource cluster from the B E-PDCCH resource clusters according to the determination result.
18. The terminal of claim 15, wherein the uplink resource determining unit is configured to:
when each E-PDCCH resource cluster comprises at least one control channel resource set, each control channel resource set comprises at least one control resource unit, and the control resource units contained in different control channel resource sets are different:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the scrambling identifier on the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster.
19. The terminal of claim 18, wherein the uplink resource determining unit determines, according to a control channel resource set corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal, and specifically includes:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of a control channel resource set corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the number of the selected E-PDCCH resource cluster.
20. The terminal according to claim 18, wherein the uplink resource determining unit determines, according to an antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal, specifically includes:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the number of the selected E-PDCCH resource cluster.
21. The terminal of claim 18, wherein the uplink resource determining unit determines, according to a scrambling identifier on an antenna port corresponding to a control resource unit occupied by an E-PDCCH of the terminal in the selected E-PDCCH resource cluster, a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal, and specifically includes:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the scrambling identifier on the antenna port; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, the scrambling identifier on the antenna port and the number of the selected E-PDCCH resource cluster.
22. A base station, comprising:
a downlink transmission unit, configured to transmit the E-PDCCH of the terminal on B E-PDCCH resource clusters in a downlink subframe; the B E-PDCCH resource clusters are B of A E-PDCCH resource clusters for E-PDCCH detection of the terminal; wherein A, B are integers greater than 1 and B is not greater than A;
a resource cluster selection unit, configured to select one E-PDCCH resource cluster from the B E-PDCCH resource clusters;
an uplink resource determining unit, configured to determine, according to the resource of the E-PDCCH transmitting the terminal in the selected E-PDCCH resource cluster, a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal;
and the uplink feedback receiving unit is used for receiving the uplink feedback information sent by the terminal on the determined PUCCH resource.
23. The base station of claim 22, wherein the resource cluster selection unit is configured to:
selecting one E-PDCCH resource cluster which is indicated to a terminal by the base station through a signaling in advance from the B E-PDCCH resource clusters, wherein the E-PDCCH resource cluster indicated by the base station is one of the B E-PDCCH resource clusters; or,
and selecting one E-PDCCH resource cluster from the B E-PDCCH resource clusters according to a pre-agreed method.
24. The base station of claim 23, wherein the resource cluster selecting unit selects one E-PDCCH resource cluster from B E-PDCCH resource clusters according to a pre-agreed method, specifically comprising:
and determining and selecting the first resource cluster of the B E-PDCCH resource clusters according to the cell radio network temporary identifier C-RNTI corresponding to the terminal, and selecting one E-PDCCH resource cluster from the B E-PDCCH resource clusters according to the determination result.
25. The base station of claim 22, wherein the uplink resource determining unit is configured to:
when each E-PDCCH resource cluster comprises at least one control channel resource set, each control channel resource set comprises at least one control resource unit, and the control resource units contained in different control channel resource sets are different:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the scrambling identifier on the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster.
26. The base station of claim 25, wherein the uplink resource determining unit determines, according to a control channel resource set corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal, specifically includes:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of a control channel resource set corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of a control channel resource set corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the number of the selected E-PDCCH resource cluster.
27. The base station of claim 25, wherein the uplink resource determining unit determines, according to an antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, a PUCCH resource for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal, specifically includes:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the number of the selected E-PDCCH resource cluster.
28. The base station of claim 25, wherein the uplink resource determining unit determines, according to the scrambling identifier of the antenna port corresponding to one control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, the PUCCH resource for transmitting the uplink feedback information corresponding to the E-PDCCH of the terminal, and specifically includes:
determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster and the scrambling identifier on the antenna port; or,
and determining PUCCH resources for transmitting uplink feedback information corresponding to the E-PDCCH of the terminal according to the number of an antenna port corresponding to a control resource unit occupied by the E-PDCCH of the terminal in the selected E-PDCCH resource cluster, the scrambling identifier on the antenna port and the number of the selected E-PDCCH resource cluster.
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