CN103476120B - The transmission of Physical Uplink Control Channel, processing method and processing device - Google Patents
The transmission of Physical Uplink Control Channel, processing method and processing device Download PDFInfo
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Abstract
The invention discloses a kind of transmission of Physical Uplink Control Channel, processing method and processing devices, wherein sending method includes：The resource mapping position of the PUCCH of each subframe is determined according at least one of：The specific high-level signaling of cell, the specific high-level signalings of UE, dynamic control signaling；PUCCH is sent in resource mapping position.Through the invention, the spectrum efficiency of PUCCH is improved.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for transmitting and processing a Physical Uplink Control Channel (PUCCH).
Background
In the existing standards of Long Term Evolution (Long Term Evolution, abbreviated as LTE) and Long Term Evolution-Advanced (LTE-Advanced, abbreviated as LTE-a), the resource mapping position of the PUCCH is determined by the following 3 methods:
the first method is as follows: the PUCCH is in a format of 1/1a/1b, and the resource mapping position of the PUCCH is determined according to the index of the PDCCH for scheduling the PDSCH;
the second method comprises the following steps: the PUCCH is in a format of 2/2a/2b, and the resource mapping position is configured by a high-level signaling;
the third method comprises the following steps: the PUCCH is format 3, and its resource mapping location is configured by higher layer signaling.
In addition, in a Time Division Duplex (TDD) system, one uplink subframe may contain PUCCH format 1/1a/1b feedback information for multiple downlink subframes, and the physical mapping is completed in a predefined manner (according to OFDM symbol block interleaving of PDCCHs in multiple downlink subframes).
Table 1 is a timing relationship between a PDSCH and Uplink Control Information (UCI) 1/1a/1b defined in the related art, and table 1 shows a PDSCH of UCI 1/1a/1b in subframe n for an n-k subframe. The specific mapping mode can adopt a channel selection method in the 3gpp ts 36.213.
Table 1: timing relationship k of downlink PDSCH and UCI0,k1,…kM-1}
However, R11 in the related art introduces a new PDCCH scheme, i.e., E-PDCCH. Some companies discuss designs [1] - [7] of PUCCH format 1/1a/1b for E-PDCCH.
Aiming at the problem that the PUCCH spectrum efficiency is low due to the fact that a method for determining PUCCH mapping resources in the related technology is not flexible, an effective solution is not provided at present.
Disclosure of Invention
Aiming at the problem that the PUCCH spectrum efficiency is low due to the fact that the PUCCH mapping resources are determined to be inflexible in the related art, the invention provides a PUCCH sending and processing method and a PUCCH sending and processing device, and aims to at least solve the problem.
According to an aspect of the present invention, an embodiment of the present invention provides a PUCCH sending method, including: determining a resource mapping position of the PUCCH of each subframe according to at least one of the following: cell-specific high-level signaling, User Equipment (UE) -specific high-level signaling, and dynamic control signaling; and transmitting the PUCCH at the resource mapping position.
Preferably, the resource mapping position of the PUCCH is determined according to at least one of: the cell-specific high-level signaling, the user equipment UE-specific high-level signaling, and the dynamic control signaling include:
determining a resource index of the PUCCH according to the following formulaWherein,is a component of an index of the PUCCH transmitted on the uplink subframe u, wherein the component of the index is determined without signaling configuration,and determining configuration parameters of the starting position of the PUCCH transmitted on the uplink subframe u according to the result of the cell-specific high-level signaling, the UE-specific high-level signaling, the dynamic control signaling or the combined operation thereof.
Preferably, the first and second electrodes are formed of a metal,determining, by the result of the cell-specific high layer signaling, the UE-specific high layer signaling, the dynamic control signaling, or a combination thereof, comprises:
is determined by the following formulaWherein, the cell-specific high-level signaling, the UE-specific high-level signaling, and dynamic control signaling are indicated as optional items.
Preferably, theIs one of the following:
indexes of downlink eCCEs corresponding to the PUCCH in downlink eCCE spaces corresponding to all PUCCHs transmitted in the uplink subframe u;
the sum of an index inside a Physical Resource Block (PRB) space for transmitting the ePDCCH and a first demodulation reference symbol port index, wherein the first demodulation reference symbol port index is a natural number from 1 to 4;
and summing the index of the eCCE and a second reference symbol port index, wherein the second demodulation reference symbol port index is a natural number from 1 to the maximum port number that one eCCE can map.
Preferably, the resource mapping position of the PUCCH is determined according to at least one of: the cell-specific high-level signaling, the user equipment UE-specific high-level signaling, and the dynamic control signaling include:
determining a resource index of the PUCCH according to the following formulaWherein,is the component of the index of the PUCCH corresponding to the downlink subframe d, wherein the component of the index is determined in a mode of not carrying out signaling configuration,and the configuration parameter of the starting position of the PUCCH corresponding to the downlink subframe d is determined by the result of the cell-specific high-level signaling, the UE-specific high-level signaling, the dynamic control signaling or the combined operation of the cell-specific high-level signaling, the UE-specific high-level signaling and the dynamic control signaling.
Preferably, the subframe is an uplink subframe, and the eCCE index participates in block interleaving; the subframe is a downlink subframe, and the eCCE index does not participate in block interleaving.
Preferably, the first and second electrodes are formed of a metal,determining, by the result of the cell-specific high layer signaling, the UE-specific high layer signaling, the dynamic control signaling, or a combination thereof, comprises:
is determined by the following formulaWherein, the cell-specific high-level signaling, the UE-specific high-level signaling, and dynamic control signaling are indicated as optional items.
Preferably, for a multi-carrier system, multiple carriers used by one user respectively determine the resource mapping positions of the PUCCH on the multiple carriers.
Preferably, the PUCCH is in format 1/1a/1 b.
According to an aspect of the present invention, an embodiment of the present invention provides a PUCCH processing method, including: determining a resource position to which an enhanced physical downlink control channel (ePDCCH) corresponding to a dynamic subframe is mapped when the dynamic subframe is configured as a downlink subframe, wherein the resource position comprises: a fixed uplink subframe or a dynamic uplink subframe; canceling the ePDCCH configuration on the dynamic subframe; or configuring the resource position of a Physical Uplink Control Channel (PUCCH) of the ePDCCH according to the resource position.
Preferably, configuring the resource location of the PUCCH of the ePDCCH according to the resource location includes: and the resource position is a fixed uplink subframe, and the resource mapped by the PUCCH1/1a/1b of the ePDCCH is configured according to the condition that all dynamic subframes are downlink subframes.
Preferably, configuring the resource location of the physical uplink control channel of the ePDCCH according to the resource location includes: the resource position is a dynamic uplink subframe, and a PUCCH is selected from a predefined candidate parameter list to configure the resource position of the PUCCH; or configuring the resource position of the PUCCH as a preset resource, and excluding all the dynamic subframes as the resources left after the resources mapped by the PUCCH1/1a/1b corresponding to the downlink subframes.
According to an aspect of the present invention, an embodiment of the present invention provides a PUCCH transmission apparatus, including: a first determining module, configured to determine a resource mapping position of a PUCCH of each subframe according to at least one of: cell-specific high-level signaling, User Equipment (UE) -specific high-level signaling, and dynamic control signaling; a sending module, configured to send the PUCCH in the resource mapping position.
Preferably, the first determining module is configured to determine the resource index of the PUCCH according to the following formula Wherein,is a component of an index of the PUCCH transmitted on the uplink subframe u, wherein the component of the index is determined without signaling configuration,and determining configuration parameters of the starting position of the PUCCH transmitted on the uplink subframe u according to the result of the cell-specific high-level signaling, the UE-specific high-level signaling, the dynamic control signaling or the combined operation thereof.
Preferably, the first determining module is configured to determine the resource index of the PUCCH according to the following formula Wherein,is the component of the index of the PUCCH corresponding to the downlink subframe d, wherein the component of the index is determined in a mode of not carrying out signaling configuration,and the configuration parameter of the starting position of the PUCCH corresponding to the downlink subframe d is determined by the result of the cell-specific high-level signaling, the UE-specific high-level signaling, the dynamic control signaling or the combined operation of the cell-specific high-level signaling, the UE-specific high-level signaling and the dynamic control signaling.
According to an aspect of the present invention, an embodiment of the present invention provides a PUCCH processing apparatus, including: a second determining module, configured to determine a resource location to which an enhanced physical downlink control channel ePDCCH corresponding to a dynamic subframe is mapped when the dynamic subframe is configured as a downlink subframe, where the resource location includes: a fixed uplink subframe or a dynamic uplink subframe; a first configuration module, configured to configure a resource location of a Physical Uplink Control Channel (PUCCH) of the ePDCCH according to the resource location; and the processing module is used for canceling the configuration of the ePDCCH on the dynamic subframe.
Preferably, the first configuration module comprises: and the second configuration module is used for configuring the resources mapped by PUCCH1/1a/1b of the ePDCCH according to the condition that all dynamic subframes are downlink subframes when the resource positions are fixed uplink subframes.
Preferably, the first configuration module comprises: a third configuration module, configured to select a PUCCH frequency offset from a predefined candidate parameter list to configure a resource location of the PUCCH, where the resource location is a dynamic uplink subframe; a fourth configuration module, configured to configure the resource position of the PUCCH as a preset resource, excluding resources remaining after all dynamic subframes are used as resources mapped by the PUCCH1/1a/1b corresponding to the downlink subframe.
According to the invention, the resource mapping position of the PUCCH of each subframe is determined according to at least one of the cell-specific high-level signaling, the UE-specific high-level signaling and the dynamic control signaling, and then the PUCCH is sent at the resource mapping position, so that the resource mapping position of the PUCCH of each subframe is determined according to the signaling, the problem that the PUCCH mapping resource is determined inflexibly to cause lower PUCCH spectral efficiency in the related technology is solved, the flexibility of determining the PUCCH mapping resource is improved, and the PUCCH spectral efficiency is improved.
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 schematic diagram of uplink subframe pucch allocation according to the related art;
fig. 2 is a flowchart of a PUCCH transmission method according to an embodiment of the present invention;
fig. 3 is a flowchart of a PUCCH processing method according to an embodiment of the present invention;
fig. 4 is a block diagram of a PUCCH transmission apparatus according to an embodiment of the present invention;
fig. 5 is a block diagram of a PUCCH processing apparatus according to an embodiment of the present invention;
fig. 6 is a block diagram of a preferred structure of a PUCCH processing apparatus according to an embodiment of the present invention; and
fig. 7 is a diagram illustrating mapping of a dynamic ePDCCH to a PUCCH of a fixed uplink subframe according to a 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.
In the related art, a more direct scheme for mapping ePDCCH is to use UE-specific RRC signaling (the index of eCCE is also UE-specific), which has the advantage of fully utilizing PUCCH resources (including unused PUCCH1/1a/1b resources for PDCCH). In addition, ARI (HARQ-ACK Resource Index) can also be used for dynamically adjusting the relative offset of PUCCH1/1a/1b resources.
However, the above scheme in the related art cannot flexibly utilize PUCCH resources (including PUCCH1/1a/1b resources for PDCCH) in different uplink subframes. Taking the DL/UL frame structure 1 of the TDD system as an example, the downlink HARQ timing relationship is: uplink subframe #2- > downlink subframe #5/# 6; uplink subframe #3- > downlink subframe # 9. The PDCCH allocation for sub-frames #5 and #6 may be completely different from the PDCCH allocation for downlink sub-frame 9. In addition, the PUCCH1/1a/1b on #2 adopts a block interleaving scheme, wherein idle PUCCH1/1a/1b resources and idle resources on #3 may be completely different. The maximum case is that the subframe #6 and the subframe #9 are occupied by 88 PUCCH1/1a/1b code channels-UE, the eCCE indexes are the same, the PDCCHs on #5 and #6 are completely allocated, and the PDCCH on #9 does not appear. The small number of ARI bits is not enough to accurately locate the PUCCH1/1a/1b resource of the UE. For FDD systems, similar subframe PUCCH load imbalance situations still exist. For the problem that the PUCCH mapping resources cannot be flexibly processed in the related art, the present application performs transmission or processing of the PUCCH by using the scheme provided in the following embodiments.
The present embodiment provides a flowchart of a PUCCH transmission method, and fig. 2 is a flowchart of a PUCCH transmission method according to an embodiment of the present invention, and as shown in fig. 2, the method includes the following steps S202 and S204.
Step S202: determining a resource mapping position of the PUCCH of each subframe according to at least one of the following: cell-specific high-level signaling, UE-specific high-level signaling, dynamic control signaling.
Step S204: the PUCCH is transmitted at the resource mapped location.
Through the steps, the resource mapping position of the PUCCH of each subframe is determined according to at least one of the cell-specific high-level signaling, the UE-specific high-level signaling and the dynamic control signaling, and then the PUCCH is transmitted at the resource mapping position, so that the resource mapping position of the PUCCH of each subframe is determined according to the signaling, the problem that the PUCCH is determined to be inflexible in the related art, the PUCCH transmission accuracy is low is solved, the flexibility of determining the PUCCH mapping resources is improved, and the PUCCH transmission efficiency is improved.
In order to improve the accuracy of the resource mapping position of the PUCCH, the resource index of the PUCCH may be determined according to the following formula, where the component of the index is a component of an index of the PUCCH transmitted on the uplink subframe u, where the component of the index is determined without signaling configuration, and the configuration parameter of the starting position of the PUCCH transmitted on the uplink subframe u is determined according to a result of cell-specific high layer signaling, UE-specific high layer signaling, dynamic control signaling, or a combination operation thereof. The combination operation includes a combination of a plurality of conventional operations, such as addition and subtraction, multiplication and division, exponents, logarithms, and the like. Preferably, it can be determined by the following formulaWherein, the cell-specific high-level signaling, the UE-specific high-level signaling, and dynamic control signaling are indicated as optional items. This approach is relatively simple to implement.
In order to achieve the flexibility in the configuration,the method comprises the following steps:
the first method is as follows: and transmitting indexes in downlink eCCE spaces corresponding to all PUCCHs in the uplink subframe u by the downlink eCCEs corresponding to the PUCCHs.
The second method comprises the following steps: the sum of an index of a PRB to which a downlink eCCE corresponding to a PUCCH belongs in a PRB space formed by physical resource blocks for transmitting an ePDCCH and a first demodulation reference symbol port index, wherein the first demodulation reference symbol port index is a natural number from 1 to 4;
the third method comprises the following steps: and summing the index of the eCCE and a second reference symbol port index, wherein the second demodulation reference symbol port index is a natural number from 1 to the maximum port number that one eCCE can map.
In order to improve the accuracy of the resource mapping position of the PUCCH, the resource index of the PUCCH may be determined according to the following formula, where the component of the index is determined without signaling configuration, and the configuration parameter of the starting position of the PUCCH corresponding to the downlink subframe d is determined according to a result of cell-specific high-level signaling, UE-specific high-level signaling, the dynamic control signaling, or a combination operation thereof. The combination operation includes a combination of a plurality of conventional operations, such as addition and subtraction, multiplication and division, exponents, logarithms, and the like. Preferably, it can be determined by the following formulaWherein, the cell-specific high-level signaling, the UE-specific high-level signaling, and dynamic control signaling are indicated as optional items.
It should be noted that, in the above preferred embodiment, when a subframe is an uplink subframe, the eCCE index participates in block interleaving; and when the subframe is a downlink subframe, the eCCE index does not participate in block interleaving.
As a preferred embodiment, for a multi-carrier system, a plurality of carriers used by one user respectively determine the resource mapping positions of the PUCCH on the plurality of carriers.
Preferably, the PUCCH is in format 1/1a/1 b.
The present embodiment provides a PUCCH processing method, and fig. 3 is a flowchart of the PUCCH processing method according to the embodiment of the present invention, and as shown in fig. 3, the method includes the following steps S302 and S304.
Step S302: determining a resource position to which an enhanced physical downlink control channel (ePDCCH) corresponding to a dynamic subframe is mapped when the dynamic subframe is configured as a downlink subframe, wherein the resource position comprises: a fixed uplink subframe or a dynamic uplink subframe;
step S304: canceling the ePDCCH configuration on the dynamic subframe; or configuring the resource position of the PUCCH of the ePDCCH according to the resource position.
By the preferred embodiment, when the dynamic subframe is configured as the downlink subframe, the configuration of the ePDCCH on the dynamic subframe is cancelled or the resource position of the PUCCH of the ePDCCH corresponding to the dynamic subframe is configured according to the resource position, so that the ePDCCH of the dynamic subframe is processed when the dynamic subframe is configured as the downlink subframe, the problem of low PUCCH transmission efficiency caused by inflexible PUCCH mapping resource determination in the related art is solved, the flexibility of PUCCH mapping resource determination is improved, and the PUCCH transmission efficiency is improved.
As a more preferred embodiment, the resource location of the PUCCH of the ePDCCH is configured in the following two manners according to whether the resource location is a fixed uplink subframe or a dynamic uplink subframe.
The first method is as follows: and the resource position is a fixed uplink subframe, and the resource mapped by PUCCH1/1a/1b of the ePDCCH is configured according to the condition that all dynamic subframes are downlink subframes.
The second method comprises the following steps: the resource position is a dynamic uplink subframe, and a PUCCH is selected from a predefined candidate parameter list to configure the resource position of the PUCCH; or configuring the resource position of the PUCCH as a preset resource, and excluding all the dynamic subframes as the resources left after the resources mapped by the PUCCH1/1a/1b corresponding to the downlink subframes.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
In another embodiment, a PUCCH transmission software is further provided, and is configured to implement the technical solutions described in the foregoing embodiments and the preferred embodiments.
In another embodiment, a storage medium is further provided, where the PUCCH transmission software is stored in the storage medium, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
The embodiment of the present invention further provides a PUCCH transmitting device, which may be used to implement the above PUCCH transmitting method and preferred embodiment, and has been described above, and is not described again, and a module related to the PUCCH transmitting device is 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. 4 is a block diagram of a PUCCH transmission apparatus according to an embodiment of the present invention, and as shown in fig. 4, the apparatus includes: the first determining module 42 and the sending module 44, which are described in detail below.
A first determining module 42, configured to determine a resource mapping position of the PUCCH of each subframe according to at least one of: cell-specific high-level signaling, User Equipment (UE) -specific high-level signaling, and dynamic control signaling; a sending module 44, connected to the first determining module 42, for sending the PUCCH at the resource mapping position determined by the first determining module 42.
Preferably, the first determining module 42 is configured to determine the resource index of the PUCCH according to the following formula Wherein,is a component of an index of the PUCCH transmitted on the uplink subframe u, wherein the component of the index is determined without signaling configuration,and determining configuration parameters of the starting position of the PUCCH transmitted on the uplink subframe u according to the result of the cell-specific high-level signaling, the UE-specific high-level signaling, the dynamic control signaling or the combined operation thereof.
The first determining module 42 is configured to determine the resource index of the PUCCH according to the following formula Wherein,is the component of the index of the PUCCH corresponding to the downlink subframe d, wherein the component of the index is determined without signaling configuration,by the cell-specific higher layer signaling, the UE-specific higher layerAnd the configuration parameter of the starting position of the PUCCH corresponding to the downlink subframe d is determined by the result of the signaling, the dynamic control signaling or the combined operation of the signaling and the dynamic control signaling.
In another embodiment, a PUCCH processing software is further provided, and is configured to implement the technical solutions described in the foregoing embodiments and the preferred embodiments.
In another embodiment, a storage medium is further provided, where the PUCCH processing software is stored in the storage medium, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
An embodiment of the present invention further provides a PUCCH processing apparatus, where the PUCCH processing apparatus may be configured to implement the PUCCH transmission method and the preferred embodiment, which have been described above and are not described again, and a module related to the PUCCH processing apparatus is 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 PUCCH processing apparatus according to an embodiment of the present invention, and as shown in fig. 5, the apparatus includes: the second determining module 52, the first configuring module 54, and the processing module 56, which are described in detail below.
A second determining module 52, configured to determine a resource location to which an enhanced physical downlink control channel ePDCCH corresponding to a dynamic subframe is mapped when the dynamic subframe is configured as a downlink subframe, where the resource location includes: a fixed uplink subframe or a dynamic uplink subframe; a first configuring module 54, connected to the second determining module 52, configured to configure a resource location of a physical uplink control channel PUCCH of the ePDCCH according to the resource location determined by the second determining module 52; a processing module 56 connected to the second determining module 52 for cancelling the ePDCCH configuration for the dynamic subframe.
Fig. 6 is a block diagram of a preferred structure of a PUCCH processing apparatus according to an embodiment of the present invention, and as shown in fig. 6, the first configuration module 54 includes: a second configuration module 542, a third configuration module 544, and a fourth configuration module 546, which are described in detail below.
The first configuration module 54 includes: a second configuration module 542, configured to configure a resource mapped by PUCCH1/1a/1b of the ePDCCH, where the resource location is a fixed uplink subframe, according to a situation that all dynamic subframes are downlink subframes; a third configuration module 544, configured to select a PUCCH frequency offset from a predefined candidate parameter list to configure a resource location of the PUCCH, where the resource location is a dynamic uplink subframe; a fourth configuring module 546, configured to configure the resource location as a dynamic uplink subframe, and configure the resource location of the PUCCH as a preset resource, excluding resources remaining after all dynamic subframes are used as resources mapped by the PUCCH1/1a/1b corresponding to the downlink subframe.
Reference will now be made in detail to the preferred embodiments, which are a combination of the above embodiments and preferred embodiments.
Preferred embodiment 1
The preferred embodiment provides a PUCCH mapping method, which is described below with reference to fig. 1 and 7.
Fig. 1 is an uplink subframe PUCCH allocation example (with PRB as the minimum granularity and no code channel shown), in fig. 1, subframes #3 and #4 cannot share the same PUCCH offset, and for similar problems, the preferred embodiment provides a PUCCH1/1a/1b mapping method after ePDCCH introduction.
In the preferred embodiment, the subframe specific PUCCH resource indication may be indicated by the system by configuring the offset of PUCCH1/1a/1b for each subframe. For a TDD system, the subframe may be an uplink subframe or a downlink subframe. The specific configuration may be indicated by UE-specific high layer signaling or cell-specific high layer signaling or dynamic control signaling or implicit indication, or a combination of the above signaling.
The first method is as follows: can be determined by the following formula:
whereinFor PUCCH1/1a/1b resource index,the configuration parameters for the uplink subframe u may be indicated by cell-specific high-level signaling, UE-specific high-level signaling, dynamic control signaling, or implicit signaling, or a combination of these signaling.
Preferably, can passTo be determined.
Wherein Respectively cell-specific high-level signaling, UE-specific high-level signaling, and dynamic control signaling. () Represented as selectable items. The dynamic indication described herein may utilize, for example, TPC/ARI bits, or new DCI signaling. The implicit indication may refer to a predefined numerical value.
Preferably, the first and second electrodes are formed of a metal,there may be a variety of candidate parameters:
(1): a CCE index of an ePDCCH aimed at in an uplink subframe # u where a PUCCH is located;
(2) PRB index (index inside PRB space for transmitting ePDCCH) + demodulation reference symbol port indexes 1-4
(3) eCCE index + Demod reference symbol Port index (from 1 to "maximum Port number of one eCCE map")
Scenarios in which (2) 1 DMRS port is mapped for "transmission of distributed ePDCCH" or "MU-MIMO transmission-one eCCE".
(3) Mapping multiple DMRS ports for one eCCE in MU-MIMO transmission
It is noted thatMay participate in block interleaving.
Mode two
Can be determined by the following formula:
whereinFor PUCCH1/1a/1b resource index,the index of CCE in the uplink subframe where PUCCH is located for ePDCCH in downlink subframe # d, or other index parameters described above.Defining the same for the configuration parameters of the downlink subframe d And does not participate in block interleaving.
The method provided by the preferred embodiment is not different for FDD systems in the above two ways. For the TDD system, the difference between the two schemes is that when one uplink subframe maps multiple downlink subframes, the specific offset of the downlink subframe has smaller granularity, and the discrete resources on the PUCCH can be more fully utilized.
Furthermore, for a multi-carrier (CC) system, when a downlink subframe specific offset is employed, it may further be CC specific, i.e.:where c is the carrier index.
For the offset specific to the uplink subframe, a CC-specific configuration is not required.
Preferred embodiment two
The present preferred embodiment provides a PUCCH mapping method, which is described below with reference to fig. 1 and fig. 7.
The method described in the preferred embodiment is to configure PUCCH1/1a/1b in a scenario that TDD IMTA and ePDCCH are simultaneously supported.
In the preferred embodiment, dynamic IMTA is also supported assuming that the mapping of PUCCH for ePDCCH is configured by higher layer signaling. One problem that comes with is: how a dynamic subframe works in an ePDCCH scenario, especially for when ePDCCH is mapped to an uplink dynamic subframe in a dynamic downlink subframe. Since the PUCCH position cannot be dynamically allocated by the higher layer signaling of the system.
The preferred embodiment includes the following modes:
the first method is as follows: when the dynamic subframe is configured as a downlink subframe, the PUCCH corresponding to the ePDCCH can then be placed on only those fixed uplink subframes for transmission (the PUCCH for PDCCH on the dynamic subframe can be placed on the dynamic uplink subframe for transmission). Such as the TDD dynamic frame structure switching scenario shown in fig. 7, the first frame is configured as frame structure 1 and the second frame is switched to frame structure 2. For the downlink subframe 4 in the first frame, the corresponding PUCCH cannot be placed in the dynamic uplink subframe 8 of the first frame, but can be placed only in the fixed uplink subframe 2 of the second frame.
In addition, when the system configures the fixed uplink subframe through the high-level signaling, the configuration of the PDCCH and the ePDCCH in the dynamic subframe needs to be considered.
Taking DL/UL frame structure 1 as an example, subframe #3/4/8/9 is a dynamic subframe, and subframe #4 is configured as a downlink subframe whose PUCCH should be transmitted by subframe #2 in the next frame (even though subframe #8 in the current frame is an uplink subframe). Correspondingly, when the position of PUCCH1/1a/1b for ePDCCH is configured by the higher layer of the system to be shifted, PUCCH resources for PDCCH/ePDCCH in subframe #3/4/8/9 should be reserved.
The second method comprises the following steps: when the ePDCCH in the dynamic downlink subframe is mapped to the uplink dynamic subframe, the system configures the corresponding PUCCH1/1a/1b physical resource position. The configuration method comprises the following steps:
A. like current TPC, the appropriate PUCCH offset is dynamically selected to the UE from a predefined list of candidate parameters. Such a scheme is equivalent toConfigured by the TPC.
B. The PDCCH of a downlink subframe where the ePDCCH is located occupies a fixed resource quantity is predefined, and the PUCCHs 1/1a/1b corresponding to the ePDCCH are mapped to avoid the PUCCHs 1/1a/1b corresponding to the predefined PDCCH. The number of PDCCH resources predefined here may be from 0 to 4 (maximum PDCCH OFDM coincidences). Such a scheme is equivalent to Configured by implicit methods. The predefined number of PDCCH resources may also be configured by higher layer signaling.
The third method comprises the following steps: no ePDCCH is transmitted in the dynamic subframe, only using PDCCH configuration.
Preferred embodiment three
The preferred embodiment provides a PUCCH resource configuration method, which includes: the subframe specific PUCCH resource configuration, i.e. the position of PUCCH1/1a/1b, is determined by the eCCE index (or equivalent index such as demodulation reference symbol port index + PRB index) and the offset of PUCCH1/1a/1b for each subframe of the system configuration.
Preferably, for a TDD system, the PUCCH is for ePDCCH in a fixed subframe. Preferably, the system configuration in this manner may be indicated by UE-specific high-level signaling, cell-specific high-level signaling, dynamic control signaling, or implicit indication, or a combination of these signaling.
As another preferred embodiment, the subframe may be an uplink subframe or a downlink subframe, and when the subframe is an uplink subframe, the index of the eCCE may participate in the block interleaving. When the subframe is a downlink subframe, the index of the eCCE of the subframe does not participate in block interleaving. Preferably, the index of the eCCE may be "index inside PRB space for transmitting ePDCCH + reference symbol port index 1-4", or "eCCE index + reference symbol port index — maximum port number mapped from 1 to" one eCCE ".
As still another preferred embodiment, for the TDD system, the PUCCH is for ePDCCH transmitted in dynamic subframe, and the PUCCH1/1a/1b offset configured by the system is for fixed uplink subframe.
For TDD systems, the PUCCH in guard point 1 is for ePDCCH transmitted in dynamic subframes, and the PUCCH1/1a/1b offset of the system configuration is for dynamic uplink subframes. For each dynamic subframe, the system may configure its offset dynamically or implicitly.
For a multi-CC system, when the downlink subframe specific offset is adopted in the above scheme, it may further be configured specifically for a certain CC.
Through the embodiments, a PUCCH sending method and apparatus, and a PUCCH processing method and apparatus are provided, where a PUCCH resource mapping position of each subframe is determined according to at least one of a cell-specific high-level signaling, a UE-specific high-level signaling, and a dynamic control signaling, and then the PUCCH is sent at the resource mapping position, so that the PUCCH resource mapping position of each subframe is determined according to the signaling, the problem that determining PUCCH mapping resources is inflexible in related technologies and thus PUCCH sending accuracy is relatively low is solved, flexibility in determining PUCCH mapping resources is improved, and PUCCH sending accuracy is improved to a certain extent. It should be noted that these technical effects are not possessed by all the embodiments described above, and some technical effects are obtained only by some preferred embodiments.
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 (9)
1. A method for transmitting a Physical Uplink Control Channel (PUCCH) is characterized by comprising the following steps:
determining a resource mapping position of the PUCCH of each subframe according to at least one of the following:
cell-specific high-level signaling, User Equipment (UE) -specific high-level signaling, and dynamic control signaling;
transmitting the PUCCH at the resource mapping location;
determining a resource mapping position of the PUCCH according to at least one of the following: the cell-specific high-level signaling, the user equipment UE-specific high-level signaling, and the dynamic control signaling include:
determining a resource index of the PUCCH according to the following formula Wherein,is a component of an index of a PUCCH transmitted on an uplink subframe u, wherein the component of the index is determined without signaling configuration,configuration parameters of the starting position of the PUCCH transmitted on the uplink subframe u determined by the result of the cell-specific high-level signaling, the UE-specific high-level signaling, the dynamic control signaling or the combined operation thereof;
wherein, theIs one of the following: indexes of downlink eCCEs corresponding to the PUCCH in downlink eCCE spaces corresponding to all PUCCHs transmitted in the uplink subframe u; the sum of an index of a physical resource block PRB to which a downlink eCCE corresponding to the PUCCH belongs in a PRB space formed by the physical resource block used for transmitting the ePDCCH and a first demodulation reference symbol port index, wherein the first demodulation reference symbol port index is a natural number from 1 to 4;
a sum of an index of the eCCE and a second demodulation reference symbol port index, wherein the second demodulation reference symbol port index is a natural number from 1 to a maximum port number to which one eCCE can be mapped.
2. The method of claim 1,determining, by the result of the cell-specific high layer signaling, the UE-specific high layer signaling, the dynamic control signaling, or a combination thereof, comprises:
is determined by the following formulaWherein,for the higher layer signaling specific to the cell,for the UE-specific higher layer signaling,for dynamic control signaling, () is denoted as optional.
3. The method of claim 1, wherein the resource mapping position of the PUCCH is determined according to at least one of: the cell-specific high-level signaling, the user equipment UE-specific high-level signaling, and the dynamic control signaling include:
determining a resource index of the PUCCH according to the following formula Wherein,is a component of the index of the PUCCH corresponding to the downlink subframe d, wherein the component of the index is determined without signaling configuration,configuration parameters of the starting position of the PUCCH corresponding to the downlink subframe d determined by the result of the cell-specific high-level signaling, the UE-specific high-level signaling, the dynamic control signaling or the combined operation thereof.
4. The method of claim 1, the subframe is an uplink subframe, and an index of the eCCE participates in block interleaving; the subframe is a downlink subframe, and the index of the eCCE does not participate in block interleaving.
5. The method of claim 3,determining, by the result of the cell-specific high layer signaling, the UE-specific high layer signaling, the dynamic control signaling, or a combination thereof, comprises:
is determined by the following formulaWherein,for the higher layer signaling specific to the cell,for the UE-specific higher layer signaling,for dynamic control signaling, () is denoted as optional.
6. The method according to any of claims 1 to 3 or 5, wherein for a multi-carrier system, a plurality of carriers used by one user respectively determine the resource mapping positions of the PUCCH on the plurality of carriers.
7. The method according to any of claims 1-3 and 5, wherein the PUCCH is format 1/1a/1 b.
8. A Physical Uplink Control Channel (PUCCH) transmission apparatus, comprising:
a first determining module, configured to determine a resource mapping position of a PUCCH of each subframe according to at least one of:
cell-specific high-level signaling, User Equipment (UE) -specific high-level signaling, and dynamic control signaling;
a sending module, configured to send the PUCCH in the resource mapping location;
the first determining module is used for determining the resource index of the PUCCH according to the following formula Wherein,is a component of an index of a PUCCH transmitted on an uplink subframe u, wherein the component of the index is determined without signaling configuration,configuration parameters of the starting position of the PUCCH transmitted on the uplink subframe u determined by the result of the cell-specific high-level signaling, the UE-specific high-level signaling, the dynamic control signaling or the combined operation thereof;
wherein, theIs as followsOne of them is: indexes of downlink eCCEs corresponding to the PUCCH in downlink eCCE spaces corresponding to all PUCCHs transmitted in the uplink subframe u; the sum of an index of a physical resource block PRB to which a downlink eCCE corresponding to the PUCCH belongs in a PRB space formed by the physical resource block used for transmitting the ePDCCH and a first demodulation reference symbol port index, wherein the first demodulation reference symbol port index is a natural number from 1 to 4; a sum of an index of the eCCE and a second demodulation reference symbol port index, wherein the second demodulation reference symbol port index is a natural number from 1 to a maximum port number to which one eCCE can be mapped.
9. The apparatus of claim 8, wherein the first determining module is configured to determine the resource index of the PUCCH according to the following formula Wherein,is a component of the index of the PUCCH corresponding to the downlink subframe d, wherein the component of the index is determined without signaling configuration,configuration parameters of the starting position of the PUCCH corresponding to the downlink subframe d determined by the result of the cell-specific high-level signaling, the UE-specific high-level signaling, the dynamic control signaling or the combined operation thereof.
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| WO2015176255A1 (en) * | 2014-05-21 | 2015-11-26 | 华为技术有限公司 | Method and device for transmitting demodulation reference signal |
| CN112187432A (en) * | 2015-05-14 | 2021-01-05 | 北京三星通信技术研究有限公司 | Method and device for transmitting uplink control information |
| CN109156030B (en) * | 2016-03-01 | 2021-11-30 | 诺基亚技术有限公司 | PUCCH resource allocation |
| CN107889239B (en) | 2016-09-30 | 2020-10-16 | 华为技术有限公司 | Method and equipment for sending and receiving uplink control information |
| CN110034865B (en) * | 2018-01-12 | 2020-09-15 | 维沃移动通信有限公司 | PUCCH resource determination method, PUCCH resource receiving method, terminal equipment and network side equipment |
| WO2021097605A1 (en) * | 2019-11-18 | 2021-05-27 | 华为技术有限公司 | Wireless communication method, terminal and network device |
| CN115701194A (en) * | 2021-07-30 | 2023-02-07 | 维沃移动通信有限公司 | Uplink transmission method, configuration method, device, terminal and network side equipment |
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