WO2014019177A1 - Procédé de transmission pour canal de commande, station de base et terminal - Google Patents

Procédé de transmission pour canal de commande, station de base et terminal Download PDF

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Publication number
WO2014019177A1
WO2014019177A1 PCT/CN2012/079519 CN2012079519W WO2014019177A1 WO 2014019177 A1 WO2014019177 A1 WO 2014019177A1 CN 2012079519 W CN2012079519 W CN 2012079519W WO 2014019177 A1 WO2014019177 A1 WO 2014019177A1
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Prior art keywords
resource group
type
resource
group
groups
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PCT/CN2012/079519
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English (en)
Chinese (zh)
Inventor
刘鹍鹏
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201280006961.2A priority Critical patent/CN103858400B/zh
Priority to PCT/CN2012/079519 priority patent/WO2014019177A1/fr
Publication of WO2014019177A1 publication Critical patent/WO2014019177A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a control channel transmission method, a base station, and a terminal. Background technique
  • the time-frequency resources in each downlink subframe are divided into two regions: PDCCH (Physical Downlink) Control Channel, Physical Downlink Control Channel) Area and PDSCH (Physical Downlink Shared Channel) area.
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • the PDCCH region and the PDSCH region adopt a time division multiplexing manner, that is, the PDCCH occupies the first N OFDM (Orthogonal Frequency Division Multiplexing) symbols, where N is less than or equal to 3, and the PDSCH is occupied. The remaining OFDM symbols.
  • a CCE Control Channel Element
  • each CCE is mapped to a specific time-frequency grid point RE (Resource Element) in the PDCCH region. And then interleaved to physical resources, where the physical resources are composed of REG (Resource Element Group).
  • CoMP Coordinated Multiple Points
  • LTE evolved version Rll Release 11
  • Multiplex-multiplexed (Multi-input-Out-put) scheduling mechanism which can significantly increase the number of users simultaneously served by each cell, but the introduction of these two scheduling mechanisms also makes up to 3
  • the PDCCH region of the OFDM symbol cannot meet the requirements of the added user, and a new PDCCH resource needs to be added, that is, the PDCCH region is extended.
  • the PDSCH is multiplexed, and a part of the PDSCH is used as an E-PDCCH (Extended-PDCCH, extended PDCCH). )use.
  • the physical resource granule corresponding to the E-PDCCH needs to be defined. Degrees, such as eREG (Extended-REG, Extended REG), such that the E-PDCCH is mapped. Compared with the normal REG, since the E-PDCCH occupies the original PDSCH region, when defining a new physical resource granularity eREG, some additional factors need to be considered, such as the CRS (Cell-specific Reference Signal) included in the original PDSCH region. Physical signals and physical channels such as PDCCH, CSI-RS (Channel Statement Information- Reference Signal), and DMRS (Demodulation Reference Signal).
  • eREG Extended REG
  • CRS Cell-specific Reference Signal
  • the prior art proposes a new mapping method.
  • N 8 eREGs in a PRB pair (Physical Resource Block Pair), which are 0, 1 , ..., 7, respectively, according to the mode of the first frequency domain and the time domain.
  • the eight eREGs are sequentially mapped to the REs in turn, and then each OFDM symbol is cyclically shifted.
  • 0, 1, and 7 are sequentially mapped to the first OFDM symbol, and the mapping result of the first OFDM symbol is obtained. : 0,1,2,3,4,5,6,7,0,1,2,3 (- OFDM symbols have 12 subcarriers), so the first column is finally mapped to 3.
  • mapping the second OFDM symbol to get: 4,5,6,7,0,1,2,3,4,5,6,7. And deriving the mapping result of the remaining OFDM symbols; and then cyclically shifting each mapped OFDM symbol, for example, shifting the first OFDM symbol downward by 0 bits, and shifting the second OFDM symbol by 1 bit, The three OFDM symbols are shifted down by 2 bits, and so on, to obtain the final mapping result.
  • mapping and re-shifting are required, and the mapping result after the shift is too complicated, and the RE of the specific mapping of any one of the eREGs in the OFDM symbol cannot be known by the law of the single ticket.
  • Position When considering some additional factors such as CRS, PDCCH, CSI-RS, and DMRS, the number of REs mapped by each eREG in each OFDM symbol will be relatively large, resulting in uneven distribution of each eREG in the entire PRB pair. The channel estimation performance corresponding to each eREG has a large difference, and the frequency domain range and the time domain diversity gain are reduced.
  • An embodiment of the present invention provides a method for transmitting a control channel, a base station, and a terminal, which can define a set of physical resource units by using a new resource group definition manner, and the control channel is mapped to the resource group according to a specific rule for transmission, and the solution is considered in consideration of E- Physical signal of the PDCCH multiplexed PDSCH region and In the case of a physical channel, the number of REs included in each resource unit group or control channel unit is large, resulting in a problem that the demodulation performance of the resource unit group is not balanced.
  • the set of physical resource units corresponds to at least one of the first resource groups; and the control channel is mapped to the RE corresponding to the at least one first resource group for transmission.
  • a method for transmitting a control channel comprising:
  • the set of physical resource units corresponds to at least one of the first resource groups; according to the correspondence, the control channel is demapped from the RE corresponding to the first resource group in the signaling.
  • a base station comprising:
  • An acquiring unit configured to acquire a correspondence between an index of the first resource group and a physical resource unit RE in the physical resource unit set, where the first resource group is a resource unit group eREG or REG, or is a control channel unit
  • the eCCE or the CCE the set of physical resource units corresponding to at least one of the first resource groups;
  • mapping unit configured to map the control channel to the RE corresponding to the at least one first resource group for transmission.
  • a terminal comprising:
  • a receiving unit configured to receive signaling sent by the sending end
  • An acquiring unit configured to acquire a correspondence between an index of the first resource group and a physical resource unit RE in the physical resource unit set, where the first resource group is a resource unit group eREG or REG, or is a control channel unit
  • the eCCE or the CCE the set of physical resource units corresponding to at least one of the first resource groups;
  • a demapping unit configured to: use the first resource group in the signaling according to the correspondence The control channel is demapped on the corresponding RE.
  • the embodiment of the present invention maps a control channel to the at least according to the corresponding relationship by acquiring a correspondence between an index of the first resource group and a physical resource unit RE in the physical resource unit set. The transmission is performed on the RE corresponding to the first resource group.
  • each resource unit group or control channel unit When considering various physical signals and physical channels and the like, the number of REs included in each resource unit group or control channel unit is made equal, and the mapped REs are all distributed in the entire physical resource block pair, so that each resource unit
  • the channel estimation performance of the group or control channel unit is as close as possible, and a larger frequency domain and time domain diversity gain are obtained, and the first resource group of the symbol in which the DMRS is located may be mapped in such a manner that each first resource group is in the OFDM symbol and the sub-band.
  • the distribution on the carrier is as uniform as possible, which is beneficial to the allocation and sharing of power.
  • Embodiment 1 is a flowchart of a method according to Embodiment 1 of the present invention.
  • Embodiment 3 is a flowchart of a method according to Embodiment 3 of the present invention.
  • FIG. 4 is a schematic diagram of a correspondence between a first resource group and an RE according to Embodiment 3 of the present invention
  • FIG. 5 is a flowchart of a method according to Embodiment 4 of the present invention
  • FIG. 6 is a schematic diagram of a correspondence relationship between a first resource group and an RE when a DMRS is provided according to Embodiment 4 of the present invention
  • FIG. 7 is a schematic diagram of a correspondence relationship between a first resource group and an RE when a DMRS and a CRS are provided according to Embodiment 4 of the present invention.
  • FIG. 8 is a schematic diagram of correspondence between a first resource group and an RE of a symbol of a DMRS in a normal CP according to Embodiment 4 of the present invention; Schematic diagram of the correspondence relationship of RE;
  • FIG. 10 is a schematic diagram showing a correspondence relationship between a first resource group and an RE of a symbol of a DMRS in a normal CP according to Embodiment 4 of the present invention
  • FIG. 14 and FIG. 15 are schematic diagrams showing a correspondence relationship between a first resource group and an RE when a DMRS is provided according to Embodiment 5 of the present invention.
  • FIG. 17 is a schematic diagram of a correspondence between a first resource group and an RE in an extended CP according to Embodiment 6 of the present invention.
  • FIG. 19 is a schematic diagram of a correspondence between a first resource group and an RE in an extended CP according to Embodiment 7 of the present invention.
  • FIG. 20 and FIG. 21 are schematic diagrams showing correspondences between a first resource group and an RE under an extended CP according to Embodiment 7 of the present invention.
  • FIG. 23 and FIG. 24 are schematic diagrams showing the correspondence between the first resource group and the RE under the extended CP according to Embodiment 8 of the present invention.
  • 26 is a schematic diagram of a correspondence between a first resource group and an RE in a normal CP according to Embodiment 9 of the present invention.
  • FIG. 27 is a schematic diagram of a correspondence between a first resource group and an RE in a normal CP according to Embodiment 9 of the present invention.
  • FIG. 28 and FIG. 29 are corresponding to the first resource group and the RE under the normal CP according to the ninth embodiment of the present invention.
  • FIG. 31 is a schematic diagram of a correspondence between a first resource group and an RE in a normal CP according to Embodiment 10 of the present invention.
  • FIG. 33 is a schematic diagram of a corresponding relationship between a resource group and an RE according to Embodiment 11 of the present invention
  • FIG. 34 is a schematic structural diagram of a base station according to Embodiment 12 of the present invention
  • FIG. 35 is a schematic structural diagram of a terminal according to Embodiment 13 of the present invention. detailed description
  • This embodiment provides a method for transmitting a control channel. As shown in FIG. 1, the method includes:
  • the obtaining the correspondence between the index of the first resource group and the physical resource unit RE in the physical resource unit set includes: receiving the high layer signaling of the network side, and acquiring the first resource group included in the high layer signaling Correspondence between the index and the physical resource unit RE in the set of physical resource units; and/or obtaining the index of the predefined first resource group and the physical resource in the physical resource unit set Correspondence between source units RE.
  • the mapping between the index of the first resource group and the physical resource unit RE in the physical resource unit set includes: an index value of a frequency domain subcarrier of an RE in the physical resource unit set is k, a time domain
  • the index value of the orthogonal frequency division multiplexing OFDM symbol has a functional relationship between the index of the first resource group and the k and the said.
  • the function relationship includes:
  • N n , where N is the number of the first resource group in the set of physical resource units, n is an index of the first resource group, and frequency
  • the index value of the domain subcarrier is k, the RE of the index of the time domain OFDM symbol belongs to the nth first resource group, mod is the remainder operation, a and b are positive integers greater than or equal to 1, and c is greater than or equal to An integer of 0.
  • n ranges from 0 to N1, or from 1 to N
  • the value range of the k is one of the following: 0 to the system bandwidth, the number of all subcarriers is reduced by 1, and the value is 0 to one physical.
  • the number of subcarriers included in the resource block is decreased by 1, and is 0.
  • At least one physical resource block pair of the enhanced control channel allocated to the user is decremented by one.
  • the mapping between the index of the first resource group and the physical resource unit RE in the physical resource unit set includes: the physical resource unit set includes at least two second resource groups, each of the second resource groups There is a corresponding relationship between the REs and the indexes of the first resource group, where the second resource group includes consecutive at least one subcarrier and consecutive at least one OFDM symbol.
  • the consecutive at least one subcarrier and the continuous at least one OFDM symbol are consecutive subcarrier continuous and consecutive OFDM symbols after the pilot is deducted, or the consecutive at least one subcarrier and the continuous at least one OFDM.
  • the symbol is a continuous subcarrier containing a position where the pilot is located or a continuous OFDM symbol.
  • the number of indexes of the first resource group corresponding to all REs included in each of the second resource groups is: the number of the first resource groups included in the physical resource unit set.
  • each of the second resource groups in the set of physical resource units includes equal numbers of REs occupied by at least one type of second signal, and the second signal is a demodulation reference signal.
  • DMRS Common Reference Signal CRS, Physical Downlink Control Channel PDCCH or Measurement Reference Signal CSI-RS.
  • each RE of each type of the second resource group and the first resource group includes at least one of the following:
  • each RE loop sequentially belongs to the at least one first resource group numbered in a predetermined order according to the order of the time domain after the frequency domain;
  • each RE loop sequentially belongs to the at least one first resource group numbered in a predetermined order according to the order of the pre-frequency domain post-time domain;
  • Corresponding relationship between each RE and the at least one first resource group in a second resource group of the third type is a correspondence between each RE in the second resource group of the first type and at least one first resource group Permutation between OFDM symbols in the time domain and/or permutation between subcarriers in the frequency domain;
  • Corresponding relationship between each RE and the at least one first resource group in a second resource group of the fourth type is a correspondence between each RE in the second resource group of the first type and at least one first resource group Cyclic shift in the time domain and/or cyclic shift in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is that the correspondence between each RE in the second resource group of the first type and the at least one first resource group is Permutation between OFDM symbols on a domain and/or permutation between subcarriers in the frequency domain, and cyclic shift in the time domain and/or cyclic shift in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is that the correspondence between each RE in the second resource group of the second type and the at least one first resource group is Permutation between OFDM symbols on a domain and/or permutation between subcarriers in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is that the correspondence between each RE in the second resource group of the second type and the at least one first resource group is Cyclic shift of the domain and/or cyclic shift in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is the correspondence between each RE in the second resource group of the first type and the at least one first resource group.
  • the RE in the OFDM symbol in which the demodulation reference signal DMRS is located is set to at least one of the second resource groups.
  • the second resource group further includes at least one of the following:
  • a second resource group of the ninth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, wherein the second resource group in the ninth type
  • the REs corresponding to each of the first resource groups are on different subcarriers and on different OFDM symbols;
  • each RE cycle belongs to all the first resource groups numbered sequentially;
  • a second resource group of the eleventh type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the eleventh type
  • Corresponding relationship between each RE and the at least one first resource group is a replacement between OFDM symbols in the time domain in the corresponding relationship between the respective REs in the second resource group of the tenth type and the at least one first resource group. Substitution between subcarriers in the frequency domain;
  • each RE and the at least one first resource group is a cyclic shift of the correspondence between each RE and the at least one first resource group in the second resource group of the tenth type in at least one OFDM symbol and/ Or a cyclic shift in at least one subcarrier;
  • a second resource group of the thirteenth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the thirteenth type
  • Corresponding relationship between each RE and at least one first resource group is the first Cyclic shift in correspondence between at least one OFDM symbol and/or cyclic shift in at least one subcarrier, and OFDM in time domain, correspondence between respective REs in the tenth type of second resource group and at least one first resource group Permutation between symbols and/or permutation between subcarriers in the frequency domain;
  • each RE loop belongs to all the first resource groups sequentially numbered in sequence;
  • a second resource group of the fifteenth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the fifteenth type
  • the correspondence between the respective REs and the at least one first resource group is a replacement between the OFDM symbols in the time domain and the correspondence between the respective REs in the fourth resource group of the fourteenth type and the at least one first resource group. Or a replacement between subcarriers in the frequency domain;
  • a second resource group of the sixteenth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the sixteenth type
  • Corresponding relationship between each RE and the at least one first resource group is a cyclic shift of the correspondence between each RE and the at least one first resource group in the second resource group of the fourteenth type in at least one OFDM symbol / or cyclic shift in at least one subcarrier;
  • a second resource group of the seventeenth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the seventeenth type
  • Corresponding relationship between each RE and the at least one first resource group is a cyclic shift of the correspondence between each RE and the at least one first resource group in the second resource group of the fourteenth type in at least one OFDM symbol / or cyclic shift in at least one subcarrier, and permutation between OFDM symbols in the time domain and / or permutation between subcarriers in the frequency domain.
  • the subcarriers occupied by the DMRS are not considered, the subcarriers in which the REs included in each of the first resource groups are separated by one subcarrier, and the frequency of each RE
  • the domain subcarrier position is cyclically incremented or decremented as the index value of the OFDM symbol is incremented.
  • the remaining REs of the OFDM symbol after the OFDM symbol is included in the set of the physical resource unit includes two second resource groups, where the first time slot of the physical resource unit set is deducted from the OFDM symbol where the DMRS is located.
  • the second time slot deducts the OFDM symbol in which the DMRS is located as the second second resource group;
  • the second resource group included in the symbol in which the DMRS is located adopts any one of the second resource groups of the ninth to seventeenth types or a combination of the second resource groups of at least two types.
  • the first one of the second resource group and the second resource group are both the second resource group of the first type or the second resource group of the second type.
  • the first RE of the second second resource group is followed by the last RE of the first second resource group, and the RE is associated with the first resource group.
  • the first one of the second resource group and the second one of the resource groups are respectively the second resource group of the first type and the second resource group of the third type, or a second resource group of the first type and a second resource group of the fourth type, or a second resource group of the first type and a second resource group of the fifth type, respectively a second resource group of the second type and a second resource group of the sixth type, or a second resource group of the second type and a second resource group of the seventh type, respectively a second resource group of the second type and a second resource group of the eighth type.
  • the physical resource unit set includes two the second resource groups, where the first time slot of the physical resource unit set is the first one of the second resource group, and the second time slot The second said second resource group.
  • the first one of the second resource group and the second one of the resource groups are the second resource group of the same type.
  • the first resource group and the second resource group are both a second resource group of the first type or a second resource group of the second type.
  • the first RE of the second second resource group is followed by the last RE of the first second resource group, and the RE is corresponding to the first resource group.
  • the first one of the second resource group and the second one of the resource groups are respectively the second resource group of the first type and the second resource group of the third type, or a second resource group of the first type and a second resource group of the fourth type, or a second resource group of the first type and a second resource group of the fifth type, respectively a second resource group of the second type and a second resource group of the sixth type, or a second resource group of the second type and a second resource group of the seventh type, respectively a second resource group of the second type and a second resource group of the eighth type.
  • the remaining REs of the OFDM symbol after the OFDM symbol is included in the set of the physical resource unit includes four second resource groups, where the first time slot of the physical resource unit set is deducted from the OFDM symbol where the DMRS is located.
  • the first 6 consecutive subcarriers of the remaining OFDM symbols constitute the first of the second resource groups;
  • the first slot deducts the last 6 subcarriers of the remaining OFDM symbols of the OFDM symbol in which the DMRS is located to constitute the second said a second resource group;
  • the first time slot deducting the first 6 subcarriers of the remaining OFDM symbols of the OFDM symbol in which the DMRS is located constitutes the third said second resource group; the fourth said second resource group;
  • the second resource group included in the symbol in which the DMRS is located adopts any one of the second resource group of the ninth type to the second resource group of the seventeenth type, or the second resource of the ninth type is adopted.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are all the first type The second resource group or the second resource group of the second type.
  • the physical resource unit set includes four second resource groups, where a first six subcarriers of a first time slot constitute a first one of the second resource groups; 6 subcarriers constitute a second of the second resource groups; the first 6 subcarriers of the second time slot constitute a third of the second resource group; the last 6 subcarriers of the second time slot form a fourth The second resource group.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are all the first type The second resource group or the second resource group of the second type.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are respectively the first At least one of a second resource group of a type, a second resource group of the third type, a second resource group of the fourth type, and a second resource group of the fifth type; or, the first The second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are respectively the second resource group and the second type At least one of the second resource group of the sixth type, the second resource group of the seventh type, and the second resource group of the eighth type.
  • the remaining RE of the OFDM symbol in which the DMRS is deducted includes 12 second resource groups, where there are 4 columns of the second resource group in the time domain, and the frequency domain has 3 rows of the second resource group, the remaining REs of the OFDM symbols in which the DMRS is deducted in each slot includes 6 of the second resource groups, and each of the second resource groups has 4 consecutive subcarriers and two OFDM symbol composition.
  • the 12 second resource groups are all the second resource group of the same type.
  • 12 of the second resource groups are respectively the second resource group of the first type, and the At least one of a second resource group of the third type, a second resource group of the fourth type, and a second resource group of the fifth type; or, 12 of the second resource groups are respectively At least one of a second resource group of the second type, a second resource group of the sixth type, a second resource group of the seventh type, and a second resource group of the eighth type.
  • the second resource group of the symbol in which the DMRS is located adopts any one of the second resource group of the ninth type to the second resource group of the seventeenth type, or adopts the ninth type a combination of at least two types of the second resource group of the second resource group to the second resource group of the seventeenth type; wherein, the RE of the DMRS where the DMRS is deducted is included in the four second resource groups or the six second resource groups.
  • Each of the four second resource groups or the six second resource groups includes four consecutive subcarriers and
  • the 12 said second resource groups are one of the following:
  • the six second resource groups of the first time slot are all the second resource group of the second type, and the six second resource groups of the second time slot are all the second resource group of the sixth type or All of the second resource groups of the seventh type; in the second resource group of the second row on the frequency domain, the second resource group located at the first column and the second column position is the sixth type of the first resource group a second resource group in the first row of the first row in the frequency domain; the second resource group located in the third column and the fourth column location is the second resource group of the sixth type; In the second resource group of the third row, the second resource group located at the third column and the fourth column position is the second resource group of the sixth type; the remaining 6 second resource groups are the second type Second resource group;
  • the second resource group located at the second row location is the second resource group of the sixth type; the second resource group of the second column in the time domain The second resource group located in the second row position is the second resource group of the eighth type, and the second resource group located in the first row and the third row location is the second resource group of the seventh type; In the second resource group of the third column on the time domain, the second resource group located at the first row and the third row location is the second resource group of the sixth type; the fourth column of the time domain In the second resource group, the second resource group located at the second row location is the second resource group of the seventh type, and the second resource group located at the first row and the third row location is the eighth type The second resource group; the remaining three second resource groups are the second resource group of the second type.
  • the set of physical resource units includes 18 second resource groups, where there are 4 columns of the second resource group in the time domain, and 3 rows of the second resource group in the frequency domain.
  • Each of the second resource groups is composed of 4 consecutive subcarriers and 2 OFDM symbols.
  • the 18 second resource groups are all the second resource group of the same type.
  • the 18 second resource groups are the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the At least one of the fifth type of the second resource group; or, the second resource group of the second type, the second resource group of the sixth type, and the second resource group of the seventh type, respectively At least one of the second resource groups of the eighth type.
  • the second resource group located at the second row location is the second resource group of the sixth type; the second column of the time domain In the second resource group, the second resource group located at the second row location is the second resource group of the eighth type, and the second resource group located at the first row and the third row location is the seventh type of the first resource group.
  • a second resource group in a second resource group of the third column on the time domain, a second resource group located at the first row and the third row location is the second resource group of the sixth type;
  • the second resource group located at the second row location is the second resource group of the seventh type, and the second resource group located at the first row and the third row location is the Eight types of second resource groups; the remaining three second resource groups are the second type of second resource groups.
  • the remaining REs of the OFDM symbol in which the set of physical resource units are deducted includes 15 second resource groups, where there are 5 columns of the second resource group in the time domain, and the frequency domain has 3 rows of the second resource group, where each second resource group is composed of 4 consecutive subcarriers and two OFDM symbols occupying a position occupied by REs that do not consider DMRS.
  • the 15 second resource groups are all the second resource group of the same type.
  • the 15 second resource groups are the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the Five types of second At least one of the resource groups; or, the second resource group of the second type, the second resource group of the sixth type, the second resource group of the seventh type, and the eighth type At least one of the second resource groups.
  • the second resource group of the symbol in which the DMRS is located adopts any one of the second resource group of the ninth type to the second resource group of the seventeenth type, or adopts the ninth type a combination of at least two types from the second resource group to the second resource group of the seventeenth type;
  • the RE of the DMRS where the DMRS is deducted is included in three second resource groups, and each of the two second resource groups includes two consecutive subcarriers and four OFDM symbols; or All the REs of the symbols in which the DMRS is located are included in the six second resource groups, and each of the six second resource groups includes four consecutive subcarriers and two OFDM symbols;
  • the 15 of the second resource groups are one of the following:
  • the second resource group located at the first row and the third row location is the second resource group of the sixth type; the remaining 13 second resource groups are The second resource group of the second type;
  • the second resource group located at the first column, the third column, the fourth column, and the fifth column position is the second resource group of the sixth type;
  • the second resource group located at the first row and the third row location is the second resource group of the sixth type;
  • the remaining 9 second resource groups are all a second type of second resource group;
  • the second resource group located at the first column and the fourth column position is the second resource group of the sixth type, and the second resource located at the fifth column position
  • the group is the second resource group of the eighth type; in the second resource group of the second column on the time domain, the second resource group located at the first row and the third row location is the sixth type of the first resource group
  • Two resource groups; in the second resource group of the third column on the time domain, all the second resource groups are the second resource group of the seventh type; the second resource of the fifth column in the time domain In the group, the second resource group located at the first row and the third row location is the second resource group of the seventh type; the remaining five second resource groups are all the second resource group of the second type.
  • the REs of the physical resource unit set include 21 second resource groups, where there are 7 second resource groups in the time domain, and 3 second resource groups in the frequency domain, and each second resource The group consists of 4 consecutive subcarriers and 2 OFDM symbols.
  • the 21 second resource groups are all the second resource group of the same type.
  • the 21 second resource groups are respectively the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the fifth type At least one of the second resource groups; or, the second resource group of the second type, the second resource group of the sixth type, the second resource group of the seventh type, and the At least one of the second resource group of the eighth type.
  • the second resource group located in the first column, the third column, the fourth column, the fifth column, and the sixth column is the second resource group a second resource group of the sixth type obtained by replacing the OFDM symbols in the time domain by the second resource group of the type; the second resource of the seventh column in the second resource group of the second row in the frequency domain
  • the group is the second resource group of the sixth type obtained by replacing the second resource group of the second type in the frequency domain; in the second resource group of the second column in the time domain,
  • the second resource group located at the first row and the third row position is the second resource group of the sixth type obtained by replacing the OFDM symbols in the time domain with the second resource group of the second type;
  • the second resource group is the second resource group of the second type.
  • the modulation symbol of the control signaling is mapped to the RE other than the RE that transmits the second signal, where the location of the RE corresponding to the at least one first resource group is used to transmit the second signal, where
  • the second signal includes at least one of a physical downlink control channel PDCCH, a common reference signal CRS, a demodulation reference signal DMRS, and a measurement reference signal CSI-RS; the physical resource unit set is at least one physical resource block pair.
  • the embodiment of the present invention obtains the correspondence between the index of the first resource group and the physical resource unit RE in the physical resource unit set, and maps the control channel to the specific rule according to the corresponding relationship. Transmitting at least one of the first resource groups.
  • Each resource unit group or control channel unit is included when considering various physical signals and physical channels and the like
  • the number of REs is as equal as possible, and the REs of these mappings are evenly distributed among the entire physical resource block pairs, so that the channel estimation performance of each resource unit group or control channel unit is as close as possible, and a larger frequency domain and time domain diversity gain are obtained.
  • the mapping manner of the first resource group of the symbol in which the DMRS is located may be such that each of the first resource groups is uniformly distributed on the OFDM symbol and the subcarrier, which is beneficial to power allocation and sharing.
  • This embodiment provides a method for transmitting a control channel. As shown in FIG. 2, the method includes:
  • the first resource group is a resource unit group eREG or REG, or is a control channel unit eCCE or CCE. And a set of physical resource units corresponding to at least one of the first resource groups.
  • the obtaining the correspondence between the index of the first resource group and the physical resource unit RE in the physical resource unit set includes: receiving the high layer signaling of the network side, and acquiring the first resource group included in the high layer signaling Corresponding relationship between the index and the physical resource unit RE in the physical resource unit set; and/or obtaining a correspondence between the index of the predefined first resource group and the physical resource unit RE in the physical resource unit set.
  • the mapping between the index of the first resource group and the physical resource unit RE in the physical resource unit set includes: an index value of a frequency domain subcarrier of an RE in the physical resource unit set is k, a time domain
  • the index value of the orthogonal frequency division multiplexing OFDM symbol has a functional relationship between the index of the first resource group and the k and the said.
  • the function relationship includes:
  • N n , where N is the number in the set of physical resource units The number of a resource group, n is an index of the first resource group, the index value of the frequency domain subcarrier is k, and the RE of the index value of the time domain OFDM symbol belongs to the nth first resource group, and mod is For the remainder operation, a and b are positive integers greater than or equal to 1, and c is an integer greater than or equal to zero.
  • n ranges from 0 to N1, or from 1 to N
  • the value range of the k is one of the following: 0 to the system bandwidth, the number of all subcarriers is reduced by 1, and the value is 0 to one physical.
  • the number of subcarriers included in the resource block is decreased by 1, and is 0.
  • At least one physical resource block pair of the enhanced control channel allocated to the user is decremented by one.
  • the mapping between the index of the first resource group and the physical resource unit RE in the physical resource unit set includes: the physical resource unit set includes at least two second resource groups, each of the second resource groups There is a corresponding relationship between the REs and the indexes of the first resource group, where the second resource group includes consecutive at least one subcarrier and consecutive at least one OFDM symbol.
  • the consecutive at least one subcarrier and the continuous at least one OFDM symbol are consecutive subcarrier continuous and consecutive OFDM symbols after the pilot is deducted, or the consecutive at least one subcarrier and the continuous at least one OFDM.
  • the symbol is a continuous subcarrier containing a position where the pilot is located or a continuous OFDM symbol.
  • the number of indexes of the first resource group corresponding to all REs included in each of the second resource groups is: the number of the first resource groups included in the physical resource unit set.
  • each of the second resource groups in the set of physical resource units includes equal numbers of REs occupied by at least one type of second signal, and the second signal is a demodulation reference signal DMRS. , a common reference signal CRS, a physical downlink control channel PDCCH, or a measurement reference signal CSI-RS.
  • each RE of each type of the second resource group and the first resource group includes at least one of the following:
  • each RE loop sequentially belongs to the at least one first resource group numbered in a predetermined order according to the order of the time domain after the frequency domain;
  • each RE cycle The ring sequentially belongs to the at least one first resource group numbered in a predetermined order
  • Corresponding relationship between each RE and the at least one first resource group in a second resource group of the third type is a correspondence between each RE in the second resource group of the first type and at least one first resource group Permutation between OFDM symbols in the time domain and/or permutation between subcarriers in the frequency domain;
  • Corresponding relationship between each RE and the at least one first resource group in a second resource group of the fourth type is a correspondence between each RE in the second resource group of the first type and at least one first resource group Cyclic shift in the time domain and/or cyclic shift in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is that the correspondence between each RE in the second resource group of the first type and the at least one first resource group is Permutation between OFDM symbols on a domain and/or permutation between subcarriers in the frequency domain, and cyclic shift in the time domain and/or cyclic shift in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is that the correspondence between each RE in the second resource group of the second type and the at least one first resource group is Permutation between OFDM symbols on a domain and/or permutation between subcarriers in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is that the correspondence between each RE in the second resource group of the second type and the at least one first resource group is Cyclic shift of the domain and/or cyclic shift in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is that the correspondence between each RE in the second resource group of the first type and the at least one first resource group is Permutation between OFDM symbols on a domain and/or permutation between subcarriers in the frequency domain, and cyclic shift in the time domain and/or cyclic shift in the frequency domain.
  • the RE in the OFDM symbol in which the demodulation reference signal DMRS is located is set to at least one of the second resource groups.
  • the second resource group further includes at least one of the following:
  • a second resource group of the ninth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in which the DMRS is occupied by the DMRS in which the DMRS is located, where
  • the REs corresponding to each of the first resource groups are on different subcarriers and different OFDM symbols;
  • each RE cycle belongs to all the first resource groups numbered sequentially;
  • a second resource group of the eleventh type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the eleventh type
  • Corresponding relationship between each RE and the at least one first resource group is a replacement between OFDM symbols in the time domain in the corresponding relationship between the respective REs in the second resource group of the tenth type and the at least one first resource group. Substitution between subcarriers in the frequency domain;
  • each RE and the at least one first resource group is a cyclic shift of the correspondence between each RE and the at least one first resource group in the second resource group of the tenth type in at least one OFDM symbol and/ Or a cyclic shift in at least one subcarrier;
  • each RE and the at least one first resource group is a cyclic shift of the correspondence between each RE and the at least one first resource group in the second resource group of the tenth type in at least one OFDM symbol and/ Or cyclic shift in at least one subcarrier, and permutation between OFDM symbols in the time domain and/or permutation between subcarriers in the frequency domain;
  • each RE loop belongs to all the first resource groups sequentially numbered in sequence; a second resource group of the fifteenth type, including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the fifteenth type
  • the correspondence between the respective REs and the at least one first resource group is a replacement between the OFDM symbols in the time domain and the correspondence between the respective REs in the fourth resource group of the fourteenth type and the at least one first resource group. Or a replacement between subcarriers in the frequency domain;
  • a second resource group of the sixteenth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the sixteenth type
  • Corresponding relationship between each RE and the at least one first resource group is a cyclic shift of the correspondence between each RE and the at least one first resource group in the second resource group of the fourteenth type in at least one OFDM symbol / or cyclic shift in at least one subcarrier;
  • a second resource group of the seventeenth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the seventeenth type
  • Corresponding relationship between each RE and the at least one first resource group is a cyclic shift of the correspondence between each RE and the at least one first resource group in the second resource group of the fourteenth type in at least one OFDM symbol / or cyclic shift in at least one subcarrier, and permutation between OFDM symbols in the time domain and / or permutation between subcarriers in the frequency domain.
  • the subcarriers occupied by the DMRS are not considered, the subcarriers in which the REs included in each of the first resource groups are separated by one subcarrier, and the frequency of each RE
  • the subcarrier position of the domain is cyclically incremented or decremented as the index value of the OFDM symbol is incremented, and the subcarriers in which the positions of the REs of the two first resource groups constituting one eCCE are completely different; when each of the first resource groups includes When the OFDM occupied by the RE is less than the total OFDM symbol occupied by the ninth type of the second resource group, at least two OFDM symbols of the positions of the REs of the two first resource groups constituting one eCCE are different. OFDM symbol.
  • the remaining REs of the OFDM symbol after the OFDM symbol is included in the set of the physical resource unit includes two second resource groups, where the first time slot of the physical resource unit set is deducted from the OFDM symbol where the DMRS is located.
  • the second time slot is deducted from the DMRS The OFDM symbol in which the second OFDM symbol is located;
  • the second resource group included in the symbol in which the DMRS is located adopts any one of the second resource groups of the ninth to seventeenth types or a combination of the second resource groups of at least two types.
  • the first one of the second resource group and the second resource group are both the second resource group of the first type or the second resource group of the second type.
  • the first RE of the second second resource group is followed by the last RE of the first second resource group, and the RE is associated with the first resource group.
  • the first one of the second resource group and the second one of the resource groups are respectively the second resource group of the first type and the second resource group of the third type, or a second resource group of the first type and a second resource group of the fourth type, or a second resource group of the first type and a second resource group of the fifth type, respectively a second resource group of the second type and a second resource group of the sixth type, or a second resource group of the second type and a second resource group of the seventh type, respectively a second resource group of the second type and a second resource group of the eighth type.
  • the physical resource unit set includes two the second resource groups, where the first time slot of the physical resource unit set is the first one of the second resource group, and the second time slot The second said second resource group.
  • the first one of the second resource group and the second one of the resource groups are the second resource group of the same type.
  • the first one of the second resource group and the second resource group are both the second resource group of the first type or the second resource group of the second type.
  • the first RE of the second second resource group is followed by the last RE of the first second resource group, and the RE is corresponding to the first resource group.
  • the first one of the second resource group and the second one of the resource groups are respectively the second resource group of the first type and the second resource group of the third type, or a second resource group of the first type and a second resource group of the fourth type, or a second of the first type respectively a resource group and the second resource group of the fifth type, or the second resource group of the second type and the second resource group of the sixth type, respectively, or the second type of the second type
  • the remaining REs of the OFDM symbol after the OFDM symbol is included in the set of the physical resource unit includes four second resource groups, where the first time slot of the physical resource unit set is deducted from the OFDM symbol where the DMRS is located.
  • the first 6 consecutive subcarriers of the remaining OFDM symbols constitute the first of the second resource groups;
  • the first slot deducts the last 6 subcarriers of the remaining OFDM symbols of the OFDM symbol in which the DMRS is located to constitute the second said a second resource group;
  • the first time slot deducting the first 6 subcarriers of the remaining OFDM symbols of the OFDM symbol in which the DMRS is located constitutes the third said second resource group; the fourth said second resource group;
  • the second resource group included in the symbol in which the DMRS is located adopts any one of the second resource group of the ninth type to the second resource group of the seventeenth type, or the second resource of the ninth type is adopted.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are all the first type The second resource group or the second resource group of the second type.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are respectively the first type At least one of a second resource group, a second resource group of the third type, a second resource group of the fourth type, and a second resource group of the fifth type; or, the first The second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are respectively the second resource group of the second type, At least one of the second resource group of the sixth type, the second resource group of the seventh type, and the second resource group of the eighth type.
  • the physical resource unit set includes four second resource groups, where a first six subcarriers of a first time slot constitute a first one of the second resource groups; 6 subcarriers constitute a second of the second resource groups; the first 6 subcarriers of the second time slot constitute a third of the second resource group; the last 6 subcarriers of the second time slot form a fourth The second resource group.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are all the first type The second resource group or the second resource group of the second type.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are respectively the first At least one of a second resource group of a type, a second resource group of the third type, a second resource group of the fourth type, and a second resource group of the fifth type; or, the first The second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are respectively the second resource group and the second type At least one of the second resource group of the sixth type, the second resource group of the seventh type, and the second resource group of the eighth type.
  • the remaining RE of the OFDM symbol in which the DMRS is deducted includes 12 second resource groups, where there are 4 columns of the second resource group in the time domain, and the frequency domain has 3 rows of the second resource group, the remaining REs of the OFDM symbols in which the DMRS is deducted in each slot includes 6 of the second resource groups, and each of the second resource groups has 4 consecutive subcarriers and two OFDM symbol composition.
  • the 12 second resource groups are all the second resource group of the same type.
  • the 12 second resource groups are the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the At least one of the second resource groups of the five types; or, the second resource groups of the second type are the second resource group of the second type, the second resource group of the sixth type, and the At least one of a seventh resource group of seven types and a second resource group of the eighth type.
  • the second resource group of the symbol in which the DMRS is located adopts any one of the second resource group of the ninth type to the second resource group of the seventeenth type, or adopts the ninth type a combination of at least two types of the second resource group of the second resource group to the second resource group of the seventeenth type; wherein, the RE of the DMRS where the DMRS is deducted is included in the four second resource groups or the six second resource groups.
  • Each of the four second resource groups or the six second resource groups includes four consecutive subcarriers and 2 OFDM symbols;
  • the 12 said second resource groups are one of the following:
  • the six second resource groups of the first time slot are all the second resource group of the second type, and the six second resource groups of the second time slot are all the second resource group of the sixth type or All of the second resource groups of the seventh type;
  • the second resource group located at the first column and the second column position is the second resource group of the sixth type; the first row of the frequency domain In the second resource group, the second resource group located in the third column and the fourth column position is the second resource group of the sixth type; in the second resource group of the third row in the frequency domain, located in the third resource group
  • the second resource group of the column and the fourth column position is the second resource group of the sixth type; the remaining 6 second resource groups are the second resource group of the second type;
  • the second resource group located at the second row location is the second resource group of the sixth type; the second resource group of the second column in the time domain The second resource group located in the second row position is the second resource group of the eighth type, and the second resource group located in the first row and the third row location is the second resource group of the seventh type; In the second resource group of the third column on the time domain, the second resource group located at the first row and the third row location is the second resource group of the sixth type; the fourth column of the time domain In the second resource group, the second resource group located at the second row location is the second resource group of the seventh type, and the second resource group located at the first row and the third row location is the second resource of the eighth type. Group; the remaining 3 second resource groups are the second resource group of the second type.
  • the set of physical resource units includes 18 second resource groups, where there are 4 columns of the second resource group in the time domain, and 3 rows of the second resource group in the frequency domain.
  • Each of the second resource groups is composed of 4 consecutive subcarriers and 2 OFDM symbols.
  • the 18 second resource groups are all the second resource group of the same type.
  • the 18 second resource groups are the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the At least one of the fifth type of the second resource group; or, the second resource group of the second type, the sixth At least one of a second resource group of the type, a second resource group of the seventh type, and a second resource group of the eighth type.
  • the second resource group located at the second row location is the second resource group of the sixth type; the second column of the time domain In the second resource group, the second resource group located at the second row location is the second resource group of the eighth type, and the second resource group located at the first row and the third row location is the seventh type of the first resource group.
  • a second resource group in a second resource group of the third column on the time domain, a second resource group located at the first row and the third row location is the second resource group of the sixth type;
  • the second resource group located at the second row location is the second resource group of the seventh type, and the second resource group located at the first row and the third row location is the Eight types of second resource groups; the remaining three second resource groups are the second type of second resource groups.
  • the remaining REs of the OFDM symbol in which the set of physical resource units are deducted includes 15 second resource groups, where there are 5 columns of the second resource group in the time domain, and the frequency domain has 3 rows of the second resource group, where each second resource group is composed of 4 consecutive subcarriers and two OFDM symbols occupying a position occupied by REs that do not consider DMRS.
  • the 15 second resource groups are all the second resource group of the same type.
  • the 15 second resource groups are the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the At least one of the fifth type of the second resource group; or, the second resource group of the second type, the second resource group of the sixth type, and the second resource group of the seventh type, respectively At least one of the second resource groups of the eighth type.
  • the second resource group of the symbol in which the DMRS is located adopts any one of the second resource group of the ninth type to the second resource group of the seventeenth type, or adopts the ninth type a combination of at least two types from the second resource group to the second resource group of the seventeenth type;
  • the RE of the DMRS where the DMRS is deducted is included in three second resource groups, and each of the three second resource groups includes two consecutive subcarriers and four OFDM symbols. Or; all the REs of the symbols in which the DMRS is located are included in the six second resource groups, and each of the six second resource groups includes four consecutive subcarriers and two OFDM symbols;
  • the 15 of the second resource groups are one of the following:
  • the second resource group located at the first row and the third row location is the second resource group of the sixth type; the remaining 13 second resource groups are The second resource group of the second type;
  • the second resource group located at the first column, the third column, the fourth column, and the fifth column position is the second resource group of the sixth type;
  • the second resource group located at the first row and the third row location is the second resource group of the sixth type;
  • the remaining 9 second resource groups are all a second type of second resource group;
  • the second resource group located at the first column and the fourth column position is the second resource group of the sixth type, and the second resource located at the fifth column position
  • the group is the second resource group of the eighth type; in the second resource group of the second column on the time domain, the second resource group located at the first row and the third row location is the sixth type of the first resource group
  • Two resource groups; in the second resource group of the third column on the time domain, all the second resource groups are the second resource group of the seventh type; the second resource of the fifth column in the time domain In the group, the second resource group located at the first row and the third row location is the second resource group of the seventh type; the remaining five second resource groups are all the second resource group of the second type.
  • the REs of the physical resource unit set include 21 second resource groups, where there are 7 second resource groups in the time domain, and 3 second resource groups in the frequency domain, and each second resource The group consists of 4 consecutive subcarriers and 2 OFDM symbols.
  • the 21 second resource groups are all the second resource group of the same type.
  • the 21 second resource groups are respectively the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the fifth type At least one of the second resource groups; or, the second resource group of the second type, the second resource group of the sixth type, the second resource group of the seventh type, and the The eighth resource group of the eighth type At least one of them.
  • the second resource group located in the first column, the third column, the fourth column, the fifth column, and the sixth column is the second resource group a second resource group of the sixth type obtained by replacing the OFDM symbols in the time domain by the second resource group of the type; the second resource of the seventh column in the second resource group of the second row in the frequency domain
  • the group is the second resource group of the sixth type obtained by replacing the second resource group of the second type in the frequency domain; in the second resource group of the second column in the time domain,
  • the second resource group located at the first row and the third row position is the second resource group of the sixth type obtained by replacing the OFDM symbols in the time domain with the second resource group of the second type;
  • the second resource group is the second resource group of the second type.
  • the method further includes: detecting the control channel to obtain control information.
  • the modulation symbol of the control signaling is mapped to the RE other than the RE that transmits the second signal, where the location of the RE corresponding to the at least one first resource group is used to transmit the second signal, where
  • the second signal includes at least one of a physical downlink control channel PDCCH, a common reference signal CRS, a demodulation reference signal DMRS, and a measurement reference signal CSI-RS; the physical resource unit set is at least one physical resource block pair.
  • the embodiment of the present invention obtains the correspondence between the index of the first resource group and the physical resource unit RE in the physical resource unit set, and parses the control channel sent by the base station according to the corresponding relationship. .
  • the control channel By receiving the control channel in this way, the channel estimation performance of each resource unit group or control channel unit is as close as possible, enabling the communication system to obtain a larger frequency domain and time domain diversity gain.
  • the embodiment provides a method for transmitting a control channel, and the physical resource unit set is regarded as an overall resource group. As shown in FIG. 3, the method includes:
  • the index value of the frequency domain subcarrier is defined as k
  • the index value of the time domain OFDM symbol is set to I.
  • each slot includes 12 subcarrier numbers, and for a normal CP, each slot includes 7 OFDM symbols; for an extended CP, each slot includes 6 OFDM symbols.
  • ⁇ is the number of the first resource group in the entire physical resource block pair, and ⁇ is the index value of the first resource group, ranging from 0 to N-1, or from 1 to ⁇
  • mod is the remainder operation
  • a, b is a positive integer greater than or equal to 1
  • c is an integer greater than or equal to 0
  • the value of k ranges from 0 to the number of all subcarriers of the system bandwidth minus one, or 0 to one physical resource block
  • the number of included subcarriers is decremented by one, or is 0 to the number of subcarriers included in at least one physical resource block pair of the enhanced control channel allocated to the user.
  • each RE included in the first resource group can be spread over the entire physical resource block pair, so that the channel estimation performance of each first resource group is substantially equal, and each first resource group can sweep the entire frequency.
  • the domain and the time domain enable the first resource group to obtain the maximum frequency diversity gain and time domain diversity gain.
  • the embodiment of the present invention obtains the correspondence between the index of the first resource group and the physical resource unit RE in the physical resource unit set, and maps the control channel to the Transmission is performed on at least one first resource group.
  • the method makes the number of REs mapped by each eREG as equal as possible when considering various physical signals and physical channels, and the mapped REs are evenly distributed in the entire physical resource block pair, so that the channel estimation performance of each eREG is as close as possible. And obtaining a larger frequency domain and time domain diversity gain, and mapping the first resource group of the symbol in which the DMRS is located, so that each first resource group is distributed on the OFDM symbol and the subcarrier as much as possible, which is beneficial to power. Assign and share.
  • the embodiment provides a method for transmitting a control channel.
  • the symbol of the DMRS in the set of physical resource units includes at least one type of second resource group. As shown in FIG. 5, the method includes:
  • the physical resource unit set includes at least one first resource group, each first resource group includes at least one physical resource unit RE, and the location of the RE and the location of the OFDM symbol included in each first resource group.
  • the physical resource unit set is at least one physical resource block pair PRB pair
  • the first resource group is a resource unit group eREG or REG, or is a control channel unit eCCE or CCE.
  • the second resource group of the symbol in which the DMRS is located in the set of physical resource units adopts any one of the second resource groups of the ninth to seventeenth types or a combination of at least two types.
  • the symbol in which the DMRS is located and the other symbols adopt different resource group division principles, wherein the position numbered 10 is Available RE.
  • the location of the RE in which the RE is located is not used to transmit control signaling, and is used to transmit a CRS or a PDCCH or a CSI-RS.
  • the CRS is numbered 9 in the figure.
  • the cyclic prefix CP when the cyclic prefix CP is a normal CP, the number of REs available in the OFDM symbol occupied by the DMRS is 24, as shown in FIG.
  • the position of 10 is the available RE position, occupying a total of 6 subcarriers and 4 OFDM symbols.
  • These REs can be regarded as 4 3x2 (6*4) matrices (the part labeled as 10 in the figure), occupying each The last two OFDM symbols of the time slot; when the cyclic prefix CP is an extended Extend CP, the number of REs available in the OFDM symbol occupied by the DMRS is 32, occupying a total of 8 subcarriers and 4 OFDM symbols, and these REs can be seen Do 4 blocks of 4x2, occupying the last two OFDM symbols of each slot.
  • each of the first resource groups includes REs on different subcarriers and different OFDM symbols, where, if the subcarriers occupied by the DMRS are not considered, each The subcarriers in which the REs included in a resource group are separated by one subcarrier, and the subcarriers in which the positions of the REs included in the two first resource groups constituting one eCCE are completely different.
  • the cyclic prefix CP is a normal CP
  • four 3x2 matrices are merged into one 6x4 matrix, and each two adjacent numbered eREGs are set as one extended control channel unit eCCE.
  • numbers eREGO to eREG7, eREGO and eREG1, eREG2 and eREG3, eREG4 and eREG5, eREG6 and eREG7 respectively constitute an eCCE.
  • eREGs in the same eCCE, one RE occupying the number of carriers of odd rows and corresponding positions of three consecutive OFDM symbols, the other occupying the number of carriers of even rows and moving one to the right of the consecutive three OFDM symbols
  • the RE of the corresponding position of consecutive 3 OFDM symbols of the bit, the RE position of the eREG mapping included in the remaining eCCEs is shifted to the right by one bit at the position of the mapping of the corresponding eREG in the previous eCCE.
  • eREGO occupies (1,1) of a 6x4 matrix
  • eREGl occupies (2,2), (4,3) and (6,4).
  • eREG2 moves one column to the right on the basis of eREGO, the number of rows is unchanged, occupying (1, 2), (3, 3) and (5, 4), and eREG3 occupies
  • Two eREGs in the same eCCE one RE occupying the number of carriers of odd rows and corresponding positions of four consecutive OFDM symbols, the other occupying the number of carriers of even rows and moving one to the right of the consecutive four OFDM symbols
  • the RE of the corresponding position of the consecutive 4 OFDM symbols of the bit is shifted to the right by one bit at the position of the mapping of the eREG in the previous eCCE.
  • eREGO occupies (1,1), (3,2), (5,3) and (7,4) of the 8x4 matrix
  • eREGl occupies (2,2), (4,3), (6,4) And (8,1).
  • eREG2 moves one column to the right on the basis of eREGO, the number of rows does not change, occupying (1, 2), (3, 3), (5, 4) and (7, 1), eREG3 occupies (2, 3), ( 4,4), (6,1) and (8,2), and so on.
  • at least two second resource groups of the same type are included, and in each second resource group, each RE cycle is sequentially numbered according to the order of the first time domain and the subsequent frequency domain. All of the first resource groups. For example, as shown in FIG.
  • the available REs include three second resource groups of 2 rows and 4 columns, which are numbered according to the frequency domain order, and are numbered in the first second resource group.
  • the e-regs of 1 to 8 are mapped to the RE in the order of the time domain and the frequency domain, and the other two resource groups are cyclically shifted based on the mapping result of the previous resource group.
  • mapping result of Figure 10 above may also be a permutation between OFDM symbols in the time domain and/or a sub-carrier permutation in the frequency domain, or a cyclic shift in at least one OFDM symbol. / or cyclic shift in at least one subcarrier.
  • all REs in the OFDM symbol in which the DMRS is located or all other REs in which the RE of the DMRS is deducted include at least two second resource groups of the tenth type, and the second resource in each of the tenth types.
  • each RE cycle belongs in the order of
  • the top second resource group is the tenth type.
  • the second resource group of the eleventh type is a permutation between OFDM symbols in the time domain and/or a subcarrier replacement in the frequency domain on the basis of the second resource group of the tenth type , as shown in Figure 11, in the middle
  • the second resource group of the twelfth type is a cyclic shift in at least one OFDM symbol and/or a cyclic shift in at least one subcarrier on the basis of the second resource group of the tenth type, as shown in FIG.
  • the second resource group at the bottom is the second resource group of the eleventh type, and the tenth type
  • the right of the four subcarriers of the OFDM symbol is shifted down by two bits;
  • the second resource group of the thirteenth type is a cyclic shift in at least one OFDM symbol and/or a cyclic shift in at least one subcarrier on the basis of the second resource group of the tenth type, and Time
  • a type of the second resource group of the thirteenth type is that the first resource group of the tenth type is first
  • the OFDM symbols are replaced, and the subcarriers of the replaced left OFDM symbol are cyclically shifted downward by the positions of the two subcarriers;
  • all REs in the OFDM symbol in which the DMRS is located or all other REs in which the REs of the DMRS are deducted include at least two second resource groups of the fourteenth type, in each of the fourteenth types.
  • each RE cycle belongs in turn according to 1 5
  • the second resource group of the fifteenth type is based on the second resource group of the fourteenth type, the permutation between OFDM symbols in the time domain and/or in the frequency domain Subcarrier replacement, as shown in Figure 12, in the middle
  • the second resource group of the sixteenth type is a cyclic shift in at least one OFDM symbol and/or a cyclic shift in at least one subcarrier on the basis of the fourth resource group of the fourteenth type, as shown in FIG.
  • the second resource group at the bottom is the second resource group of the sixteenth type, and the fourteenth class
  • the right of the four subcarriers of the OFDM symbol is shifted down by two bits;
  • the second resource group of the seventeenth type is based on the fourth resource group of the fourteenth type, the permutation between OFDM symbols in the time domain and/or the permutation between subcarriers in the frequency domain, and at least one
  • a cyclic shift within the OFDM symbol and/or a cyclic shift in at least one subcarrier ie
  • One of the seventeen types of the second resource group is the first resource group of the fourteenth type
  • the OFDM symbols are permuted, and then the four subcarriers of the left OFDM symbol are cyclically shifted by two bits.
  • the specific form of the second resource group division of the symbol in which the DMRS is located is not limited. In the actual execution process, the second resource group of the symbol in which the DMRS is located may also be in other forms. Do not do - repeat.
  • PDCCH Physical downlink control channel
  • CRS common reference signal
  • DMRS demodulation reference signal
  • CSI-RS measurement reference signal
  • the embodiment of the present invention maps the correspondence between the index of the first resource group and the RE of the symbol in which the DMRS is located in the physical resource unit set, and maps the control channel to the specific rule according to the corresponding relationship. Transmitting at least one of the first resource groups.
  • the method makes the number of REs mapped by each eREG as equal as possible when considering various physical signals and physical channels, and the mapped REs are evenly distributed in the entire physical resource block pair, so that the channel estimation performance of each eREG is as close as possible.
  • the embodiment provides a method for transmitting a control channel.
  • a normal CP the OFDM symbol in which the DMRS is located is deducted, and one physical resource unit set includes two resource groups.
  • the method includes: 501. Obtain a partitioning rule that divides all REs of the physical resource unit set into two second resource groups.
  • the OFDM symbol in which the first time slot is deducted from the DMRS is the first second resource group
  • the OFDM symbol in which the second time slot is deducted is the second second resource group
  • the two second resource groups are a second resource group of the first type
  • the first RE of the second resource group of the second first type continues with the second resource group of the first first type, for example, as shown in FIG.
  • the eREG is used as an example.
  • the predetermined sequence numbers of the eight eREGs are eREG1, eREG2, eREG3, eREG4, eREG5, eREG6, eREG7, eREG8.
  • the OFDM symbol in which the DMRS is located is deducted as the first first type.
  • each RE cycle belongs to the first to eighth eREGs sequentially numbered in the above order.
  • each RE in the first row of subcarriers belongs to the eREGs numbered 1, 2, 3, 4, and 5; the REs of the second row of subcarriers are sequentially belong to the numbers 6, 7, 8, 1, and 2, respectively.
  • each RE in the last row of subcarriers belongs to the eREGs numbered 8, 1, 2, 3, 4 in turn; then in the second time slot, the last RE of the last slot is continued
  • the eREG number of the location, the REs of the first row of subcarriers then belong to the eREGs numbered 5, 6, 7, 8, 1 in turn; the REs in the second row of subcarriers then belong to the number 2, 3, 4 , 5, 6 eREG, and so on;
  • the predetermined sequence numbers of the 8 eREGs are eREG1, eREG2, eREG3, eREG4, eREG5, eREG6, eREG7, eREG8, and the DMRS is deducted in the first time slot.
  • the OFDM symbol is the first resource group of the first second type. In the second resource group, in the order of the pre-frequency domain and the time domain, each RE loop belongs to the first sequence numbered in the above order.
  • the eighth eREG is the predetermined sequence numbers of the 8 eREGs.
  • each RE in the first column of OFDM symbols belongs to eREGs numbered 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4 in turn; each RE in the second column of OFDM symbols The eREGs are numbered 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8 in turn, and so on, until each RE in the last column of OFDM symbols belongs to the number 1, 2 eREG of 3,4,5,6,7,8,1,2,3,4; then in the second time slot, the eREG number of the position of the last RE of the last time slot, the first column
  • Each RE in the OFDM symbol belongs to the eREGs numbered 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8 in turn;
  • Each RE belongs to the eREG numbered 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, and so on.
  • the symbol in which the DMRS is located and the other symbols adopt different resource group division principles, and the position numbered 10 in FIG. 14 and FIG. 15 is an available RE.
  • the symbol of the DMRS is at least one or a combination of at least two of the second resource group of the ninth to seventeenth types in the fourth embodiment.
  • the specific form of the second resource group division of the symbol in which the DMRS is located is not limited. In the actual execution process, the second resource group of the symbol in which the DMRS is located may also be in other forms. Do not do - repeat.
  • a control channel to the RE corresponding to the at least one first resource group for transmission. It should be noted that, when the location of the RE included in the at least one first resource group is used to transmit the second signal, the modulation symbol of the control signaling is not mapped to the RE, where the second signal At least one of a physical downlink control channel PDCCH, a common reference signal CRS, a demodulation reference signal DMRS, and a measurement reference signal CSI-RS is included.
  • PDCCH Physical downlink control channel
  • CRS common reference signal
  • DMRS demodulation reference signal
  • CSI-RS measurement reference signal
  • the embodiment of the present invention obtains a division rule divided into two second resource groups in a set of physical resource units, and according to an index of the first resource group and a physical resource unit RE in the physical resource unit set. Corresponding relationship, mapping a control channel to the at least one first resource group for transmission.
  • the number of REs included in each resource unit group or control channel unit is made equal, and the mapped REs are evenly distributed in the entire physical resource block pair, so that each resource unit group Or the channel estimation performance of the control channel unit is as close as possible, and a larger frequency domain and time domain diversity gain are obtained, and a larger frequency domain and time domain diversity gain are obtained, and the mapping of the first resource group of the symbol in which the DMRS is located is obtained.
  • the method may be that the first resource groups are distributed as uniformly as possible on the OFDM symbols and the subcarriers, which facilitates power allocation and sharing.
  • the embodiment provides a method for transmitting a control channel.
  • the extended OFDM symbol is deducted from the OFDM symbol, and one physical resource unit set includes four second resource groups. As shown in FIG. 16, the method includes:
  • the first time slot is deducted from the remaining symbols of the OFDM symbol in which the DMRS is located, and the first six consecutive subcarriers constitute the first second resource group; the first time slot is deducted from the remaining symbols of the OFDM symbol in which the DMRS is located and the last 6
  • the subcarriers constitute a second second resource group; the second time slot deducts the remaining symbols of the OFDM symbol in which the DMRS is located and the first 6 subcarriers constitute a third second resource group; the second time slot deducts the OFDM symbol in which the DMRS is located
  • the remaining symbols and the last 6 subcarriers constitute a fourth second resource group.
  • the second resource group of the second type and the second resource group of the third type are included, wherein, in the case of eight eREGs, the predetermined order numbers of the eight eREGs are eREG1, eREG2, eREG3, eREG4, eREG5, eREG6, eREG7, eREG8, in the second resource group of the second type, in the order of the pre-frequency domain and the time domain, each RE loop belongs to the first to eighth eREGs sequentially numbered according to the above sequence. .
  • each RE in the first column of OFDM symbols belongs to eREGs numbered 1, 2, 3, 4, 5, and 6 in turn, and each RE in the second column of OFDM symbols belongs to number 7, 8, 1, 2 in turn. 3, 4 eREG, and so on;
  • the third resource group of the seventh type is different from the second resource group of the second type, wherein the second resource group of the seventh type of the lower left is
  • Two types of second resource groups are cyclically moved up one subcarrier, taking the first OFDM symbol as an example, and second
  • the second resource group of the type is the upper right
  • the seventh type of the second resource group is cyclically moved up two on the basis of the second type of the second resource group.
  • the subcarriers are not described again in the same way; the second resource group of the seventh type in the lower right is three loops up and down on the basis of the second resource group of the second type; optionally, the first in FIG.
  • the seventh resource group of the seven types may also be replaced by the second resource group of the sixth or eighth type.
  • the second resource group of the second type in FIG. 17 may also be replaced by the second resource group of the first type.
  • the predetermined order numbers of the 8 eREGs are eREG1, eREG2, eREG3, eREG4, eREG5, eREG6, eREG7, eREG8, in the second resource group of the first type, in the order of the time domain back-frequency time domain, each RE cycle belongs to the first to eighth eREGs sequentially numbered in the above order.
  • each RE in the first row of subcarriers belongs to the eREGs with the numbers 1, 2, 3, and 4, and the REs in the second row of subcarriers belong to the eREGs with the numbers 5, 6, 7, and 8, respectively.
  • the second resource group of the seventh type may be replaced by the second resource group of the fourth type.
  • the second resource group of the fourth type may also be replaced by the second resource group of the third or fifth type.
  • each second resource group is not limited. In the actual implementation process, the foregoing second resource group may also be in other forms, where Do - repeat.
  • the different types of second resource group combinations shown in FIG. 17 may be the second resource group of the same type or different from the second resource group of the first type to the second resource group of the eighth type. Two types of second resource groups are composed.
  • the symbol of the DMRS is adopted with the first to
  • the second resource group of the eighth type has the same mapping rule; the second resource group, the symbol where the DMRS is located and the other symbols adopt different resource group division principles, as shown in FIG. 17, where the position numbered 10 is an available RE.
  • the symbol of the DMRS is at least one or a combination of at least two of the second resource groups of the ninth to seventeenth types in the fourth embodiment.
  • the second resource group of the symbol where the DMRS is located is not The specific form of the division is limited. In the actual execution process, the second resource group of the symbol in which the DMRS is located may also be in other forms, and is not described here.
  • a control channel to the RE corresponding to the at least one first resource group for transmission. It should be noted that, when the location of the RE included in the at least one first resource group is used to transmit the second signal, the modulation symbol of the control signaling is not mapped to the RE, where the second signal At least one of a physical downlink control channel PDCCH, a common reference signal CRS, a demodulation reference signal DMRS, and a measurement reference signal CSI-RS is included.
  • PDCCH Physical downlink control channel
  • CRS common reference signal
  • DMRS demodulation reference signal
  • CSI-RS measurement reference signal
  • the embodiment of the present invention obtains a division rule of four second resource groups in a physical resource unit set, according to the location of the RE included in each first resource group, and the subcarrier and OFDM in the second resource group.
  • a correspondence of specific rules of the location of the symbol, the control channel is mapped to the at least one first resource group for transmission according to a specific rule.
  • each resource unit group or control channel unit When considering various physical signals and physical channels and the like, the number of REs included in each resource unit group or control channel unit is made equal, and the mapped REs are evenly distributed in the entire physical resource block pair, so that each resource unit group Or the channel estimation performance of the control channel unit is as close as possible, and a larger frequency domain and time domain diversity gain are obtained, and a larger frequency domain and time domain diversity gain are obtained, and the mapping of the first resource group of the symbol in which the DMRS is located is obtained.
  • the manner may be that the first resource groups are distributed as evenly as possible on the OFDM symbols and subcarriers, which facilitates power allocation and sharing.
  • the embodiment provides a method for transmitting a control channel.
  • the extended OFDM symbol is deducted from the OFDM symbol, and one physical resource unit set includes twelve second resource groups. As shown in FIG. 18, the method includes:
  • the REs in one PRB pair are divided into 12 second resource groups. There are 4 second resource groups in the domain, and 3 second resource groups in the frequency domain.
  • the remaining REs of the OFDM symbols in which the DMRS is deducted in each time slot include 6 second resource groups, and each second resource group. It consists of 4 consecutive subcarriers and two OFDM symbols.
  • each RE cycle belongs to the first to the first number according to the above order Eight eREGs.
  • each RE in the first column of OFDM symbols belongs to eREGs numbered 1, 2, 3, and 4, and each RE in the second column of OFDM symbols belongs to numbers 5, 6, 7, and 8 in turn.
  • the predetermined order of the 8 eREGs is eREG1, eREG2, eREG3, eREG4, eREG5, eREG6, eREG7, eREG8, and the second resource group of the sixth type is the second resource of the second type.
  • a permutation between OFDM symbols in the time domain and/or a permutation between subcarriers in the frequency domain for example, each RE in the first column of OFDM symbols of the second resource group of the sixth type belongs to the number 5, 6 , the eREG of 7,8, each RE in the second column of OFDM symbols belongs to the number 1, 2, 3, 4
  • the eREG the overall attribution can be expressed as a permutation between OFDM symbols in the time domain
  • the second resource group of the seventh type is a cyclic shift of the second resource group of the second type within the at least one OFDM symbol and/or a cyclic shift on the at least one subcarrier, eg, the overall attribution Can
  • the subcarriers of the right OFDM symbol are moved down by two subcarrier positions;
  • second resource group is the second type of second resource group in the time domain on the OFDM symbol replacement And/or permutation between subcarriers in the frequency domain, and cyclic shifts in at least one OFDM symbol and/or cyclic shifts in at least one subcarrier, eg, the overall attribution can be expressed as Performing a permutation between OFDM symbols in the time domain, and then moving the subcarriers of the left OFDM symbol downward by two subcarrier positions;
  • the second resource group of the second type in FIG. 19 may be replaced by the second resource group of the first type, and the second resource group of the sixth type may be replaced by the second resource group of the third type, where Taking 8 eREGs as an example, the predetermined order of the 8 eREGs is eREG1, eREG2, eREG3, eREG4, eREG5, eREG6, eREG7, eREG8, in the second resource group of the second type, according to the time domain after the time domain In order, each RE loop belongs to the first to eighth eREGs sequentially numbered in the above order.
  • each RE in the first column of OFDM symbols belongs to eREGs numbered 1, 3, 5, and 7 in turn
  • each RE in the second column of OFDM symbols belongs to eREGs numbered 2, 4, 6, and 8 in turn
  • the overall attribution belongs to happening
  • the attribution of the REs in the second resource group of the third type to the fifth type refers to the relationship between the second resource group of the sixth type to the eighth type and the second resource group of the second type, where no longer Narration.
  • each second resource group is not limited. In the actual implementation process, the foregoing second resource group may also be in other forms, where Do - repeat.
  • the twelve second resource groups may be the second resource group of the same type, or the twelve second resource groups are respectively the second resource group of the first type to the second resource group of the eighth type.
  • the six second resource groups in the first time slot are the second resource group of the second type, and the six second resource groups in the second time slot are the second type in the second type.
  • Resource groups are either the seventh category Type of second resource group;
  • two rows of the second resource group of the three rows are the second resource group of the same type, and the other row is the second resource group of the different type.
  • the second resource group of the first row in each column and the second resource group of the third row are the same second resource group, the second row in each column and the second resource of the first row or the third row It is a second resource group of different types. As shown in FIG.
  • the second type, the second type, the sixth type, and a sixth type in the four second resource groups in the first row on the frequency domain, from the left to the right, the second type, the second type, the sixth type, and a sixth type; in the four second resource groups of the second row on the frequency domain, from the left to the right, the sixth type, the sixth type, the second type, and the second type; the third in the frequency domain Among the four second resource groups of the row, the second type, the second type, the sixth type, and the sixth type are sequentially from left to right;
  • two rows of the second resource group of the three rows are the second resource group of the same type, and the other row is the second resource group of the different type.
  • the second resource group of the first row in each column and the second resource group of the third row are the same second resource group, the second row in each column and the second resource of the first row or the third row It is a second resource group of different types. As shown in FIG.
  • the second type, the seventh type, the sixth type, and The eighth type in the four second resource groups in the first row on the frequency domain, from the left to the right, the second type, the seventh type, the sixth type, and The eighth type; the fourth group of the second resource group in the second row of the frequency domain, from the left to the right, the sixth type, the eighth type, the second type, and the seventh type; the third line in the frequency domain Among the four second resource groups, the second type, the seventh type, the sixth type, and the eighth type are sequentially from left to right.
  • the second resource group of the second type may be replaced with the second resource group of the first type; the second resource group of the sixth type may be replaced.
  • the symbol of the DMRS and the other symbols adopt different resource group division principles, and the position numbered 10 in the figure of the embodiment is an available RE.
  • the symbol in which the DMRS is located adopts at least one or a combination of at least two of the second resource groups of the ninth to seventeenth types in the fourth embodiment.
  • the specific form of the second resource group division of the symbol in which the DMRS is located is not limited. In the actual execution process, the second resource group of the symbol in which the DMRS is located may also be in other forms. Do not do - repeat.
  • PDCCH Physical downlink control channel
  • CRS common reference signal
  • DMRS demodulation reference signal
  • CSI-RS measurement reference signal
  • the embodiment of the present invention obtains a division rule divided into twelve second resource groups in a set of physical resource units, according to the location of the RE included in each first resource group and the second resource group neutron.
  • the control channel is mapped to the at least one first resource group for transmission according to a specific rule.
  • each resource unit group or control channel unit When considering various physical signals and physical channels and the like, the number of REs included in each resource unit group or control channel unit is made equal, and the mapped REs are all distributed in the entire physical resource block pair, so that each resource unit The channel estimation performance of the group or control channel unit is as close as possible, and a larger frequency domain and time domain diversity gain are obtained, and a larger frequency domain and time domain diversity gain are obtained, and the first resource group of the symbol in which the DMRS is located
  • the mapping manner may be such that each of the first resource groups is distributed as evenly as possible on the OFDM symbols and subcarriers, which is advantageous for power allocation and sharing.
  • the embodiment provides a method for transmitting a control channel.
  • the difference from the seventh embodiment is that the OFDM symbol in which the DMRS is located includes six second resource groups. Under the extended CP, one physical resource unit set includes eighteen second resource groups. As shown in FIG. 22, the method includes:
  • the second resource group of the OFDM symbol in which the DMRS is deducted in the embodiment of the present invention is the same as the second resource group in the seventh embodiment, and is not described herein.
  • the main difference between this embodiment and the seventh embodiment is that the OFDM symbol in which the DMRS is located is divided into six second resource groups, and the second resource group of the OFDM symbol in which each DMRS is located is composed of four consecutive subcarriers and two. Consists of OFDM symbols.
  • the six second resource groups in the first time slot are all the second resource group of the second type, and the six second resource groups in the second time slot are all the sixth type.
  • the second resource group is either the second resource group of the seventh type;
  • two rows of the second resource group of the three rows are the second resource group of the same type, and the other row is the second resource group of the different type.
  • the second resource group of the first row in each column and the second resource group of the third row are the same second resource group, the second row in each column and the second resource of the first row or the third row It is a second resource group of different types. As shown in FIG.
  • the second type, the seventh type, the sixth type, and The eighth type in the four second resource groups in the first row on the frequency domain, from the left to the right, the second type, the seventh type, the sixth type, and The eighth type; the fourth group of the second resource group in the second row of the frequency domain, from the left to the right, the sixth type, the eighth type, the second type, and the seventh type; the third line in the frequency domain Among the four second resource groups, the second type, the seventh type, the sixth type, and the eighth type are sequentially from left to right.
  • the second resource group of the second type may be replaced with the second resource group of the first type; the second resource group of the sixth type may be replaced by The second resource group of the third type may be replaced with the second resource group of the fourth type; the second resource group of the eighth type may be replaced with the second resource group of the fifth type.
  • the symbol in which the DMRS is located adopts the first The same mapping rule as the second resource group of the eighth type.
  • the specific form of the second resource group division of the symbol in which the DMRS is located is not limited. In the actual execution process, the second resource group of the symbol in which the DMRS is located may also be in other forms. Do not do - repeat.
  • a control channel to the RE corresponding to the at least one first resource group for transmission. It should be noted that, when the location of the RE included in the at least one first resource group is used to transmit the second signal, the modulation symbol of the control signaling is not mapped to the RE, where the second signal At least one of a physical downlink control channel PDCCH, a common reference signal CRS, a demodulation reference signal DMRS, and a measurement reference signal CSI-RS is included.
  • PDCCH Physical downlink control channel
  • CRS common reference signal
  • DMRS demodulation reference signal
  • CSI-RS measurement reference signal
  • the embodiment of the present invention obtains a partitioning rule divided into eighteen second resource groups in a set of physical resource units, according to the location of the RE included in each first resource group and the second resource group neutron.
  • the control channel is mapped to the at least one first resource group for transmission according to a specific rule.
  • each resource unit group or control channel unit When considering various physical signals and physical channels and the like, the number of REs included in each resource unit group or control channel unit is made equal, and the mapped REs are all distributed in the entire physical resource block pair, so that each resource unit The channel estimation performance of the group or control channel unit is as close as possible, and a larger frequency domain and time domain diversity gain are obtained, and a larger frequency domain and time domain diversity gain are obtained, and the first resource group of the symbol in which the DMRS is located
  • the mapping manner may be such that each of the first resource groups is distributed as evenly as possible on the OFDM symbols and subcarriers, which is advantageous for power allocation and sharing.
  • the embodiment provides a method for transmitting a control channel.
  • a set of physical resource units includes fifteen second resource groups. As shown in FIG. 25, the method includes:
  • each second resource group consists of 4 consecutive subcarriers and two OFDM symbols occupying the position occupied by the REs that do not consider the DMRS.
  • the second resource group in the two time slots is the second resource group of the second type, wherein, in the case of eight eREGs, the predetermined order numbers of the eight eREGs are eREG1, eREG2, eREG3, eREG4, eREG5, eREG6, eREG7, eREG8, in the second resource group of the second type, in the order of the pre-frequency domain and the time domain, each RE loop belongs to the first to eighth eREGs sequentially numbered according to the above sequence. . For example, each RE in the first column of OFDM symbols belongs to eREGs numbered 1, 2, 3, 4 in turn, and each RE in the second column of OFDM symbols belongs to numbers 5, 6, 7, and 8 in turn.
  • 8 eREGs are taken as an example.
  • the predetermined order of the 8 eREGs is eREG1, eREG2, eREG3, eREG4, eREG5, eREG6, eREG7, eREG8, and the second resource group of the sixth type is the second resource group of the second type.
  • each RE in a first column of OFDM symbols of a second resource group of the sixth type belongs to the number 5, 6, 7 in turn.
  • each RE in the second column of OFDM symbols belongs to the eREG numbered 1, 2, 3, 4 in turn, and the overall attribution can be
  • 8 4 is a cyclic shift of the second resource group of the second type within at least one OFDM symbol and/or at least one
  • Cyclic shift on subcarriers for example, the overall attribution can be expressed as , right OFDM
  • the subcarrier of the symbol moves down two subcarrier positions;
  • the second resource group of the eighth type is the second class Permutation of OFDM symbols in the time domain and/or permutation between subcarriers in the frequency domain, and cyclic shifting in at least one OFDM symbol and/or cycling in at least one subcarrier
  • the overall attribution can be expressed as , first between OFDM symbols in the time domain
  • the second resource group of the second type in FIG. 26 or FIG. 27 may be replaced by the second resource group of the first type
  • the second resource group of the sixth type may be replaced by the second resource group of the third type.
  • the predetermined order of the eight eREGs is eREG1, eREG2, eREG3, eREG4, eREG5, eREG6, eREG7, eREG8, in the second resource group of the second type, according to the first time domain
  • each RE loop belongs to the first to eighth eREGs sequentially numbered in the above order.
  • each RE in the first column of OFDM symbols belongs to eREGs numbered 1, 3, 5, and 7 in turn
  • each RE in the second column of OFDM symbols belongs to eREGs numbered 2, 4, 6, and 8 in turn.
  • the genus can be expressed as
  • the attribution of the REs in the second resource group of the third type to the fifth type refers to the relationship between the second resource group of the sixth type to the eighth type and the second resource group of the second type, where no longer Narration.
  • each second resource group is not limited. In the actual implementation process, the foregoing second resource group may also be in other forms, where Do - repeat.
  • the 15 second resource groups of the two time slots are all the second resource group of the second type
  • the second resource group located at the first row and the third row position is the second type of the second type.
  • the resource group, the remaining 13 second resource groups are the second resource group of the second type;
  • two rows of the three rows of the second resource group must be the second resource group of the same type, and the other row is the second resource group of the different type.
  • the second resource group of the first row in each column and the second resource group of the third row are the same second resource group, the second row in each column and the second resource of the first row or the third row A second resource group of different types, as shown in FIG.
  • the OFDM symbol in which the DMRS is deducted in the second resource group of the first row in the frequency domain, from the left to the right, the second type, the second Six types, a second type, a second type, and a second type; in the five second resource groups of the second row in the frequency domain, from the left to the right, the sixth type, the second type, the sixth type, The sixth type and the sixth type; in the fifth resource group of the third row in the frequency domain, from the left to the right, the second type, the sixth type, the second type, the second type, and the second type ;
  • two rows of the second resource group of the three rows are the second resource group of the same type, and the other row is the second resource group of the different type.
  • the second resource group of the first row in each column and the second resource group of the third row are the same second resource group, the second row in each column and the second resource of the first row or the third row A second resource group of different types, as shown in FIG.
  • the OFDM symbol in which the DMRS is deducted in the second resource group of the first row in the frequency domain, from the left to the right, the second type, the second Six types, a seventh type, a second type, and a seventh type; in the fifth group of the second resource group in the second row on the frequency domain, from the left to the right, the sixth type, the second type, the sixth type, The sixth type and the eighth type; in the fifth resource group of the third row on the frequency domain, from the left to the right, the second type, the sixth type, the seventh type, the second type, and the seventh type .
  • the second resource group of the second type may be replaced with the second resource group of the first type; the second resource group of the sixth type may be replaced.
  • the symbol in which the DMRS is located and the other symbols adopt different resource group division principles, wherein the position numbered 10 is an available RE, and the dotted frame is Represents a resource group for an available RE.
  • the symbol of the DMRS is the second resource of the ninth to seventeenth types in the fourth embodiment. Groups of at least one or a combination of at least two.
  • the specific form of the second resource group division of the symbol in which the DMRS is located is not limited. In the actual execution process, the second resource group of the symbol in which the DMRS is located may also be in other forms. Do not do - repeat.
  • the embodiment of the present invention obtains a partitioning rule divided into fifteen second resource groups in a set of physical resource units, according to the location of the RE included in each first resource group and the second resource group neutron.
  • the control channel is mapped to the at least one first resource group for transmission according to a specific rule.
  • each resource unit group or control channel unit When considering various physical signals and physical channels and the like, the number of REs included in each resource unit group or control channel unit is made equal, and the mapped REs are all distributed in the entire physical resource block pair, so that each resource unit The channel estimation performance of the group or control channel unit is as close as possible, and a larger frequency domain and time domain diversity gain are obtained, and a larger frequency domain and time domain diversity gain are obtained, and the first resource group of the symbol in which the DMRS is located
  • the mapping manner may be such that each of the first resource groups is distributed as evenly as possible on the OFDM symbols and subcarriers, which is advantageous for power allocation and sharing.
  • the embodiment provides a method for transmitting a control channel.
  • a set of physical resource units includes twenty-one second resource groups. As shown in FIG. 30, the method includes:
  • each RE loop belongs to the first to eighth numbers sequentially numbered according to the above sequence.
  • eREG For example, each RE in the first column of OFDM symbols belongs to eREGs numbered 1, 2, 3, 4 in turn, and each RE in the second column of OFDM symbols belongs to numbers 5, 6, 7, and 8 in turn.
  • the predetermined order of the 8 eREGs is eREG1, eREG2, eREG3, eREG4, eREG5, eREG6, eREG7, eREG8, and the second resource group of the sixth type is the second resource of the second type.
  • a permutation between OFDM symbols in the time domain and/or a permutation between subcarriers in the frequency domain for example, each RE in the first column of OFDM symbols of the second resource group of the sixth type belongs to the number 5, 6 , the eREG of 7,8, each RE in the second column of OFDM symbols belongs to the number 1, 2, 3, 4
  • the eREG the overall attribution can be expressed as , is a replacement between OFDM symbols in the time domain;
  • the second resource group of the seventh type is a cyclic shift of the second resource group of the second type within the at least one OFDM symbol and/or a cyclic shift on the at least one subcarrier, eg, the overall attribution can 1 7
  • the subcarriers of the right OFDM symbol are moved down by two subcarrier positions;
  • the eighth resource group of the eighth type is a permutation between OFDM symbols in the time domain of the second resource group of the second type and/or a permutation between subcarriers in the frequency domain, and a cyclic shift in at least one OFDM symbol Bit and / or cyclic shift in at least one subcarrier, for example, the overall attribution can be expressed as Performing a permutation between OFDM symbols in the time domain, and then moving the subcarriers of the left OFDM symbol downward by two subcarrier positions;
  • the second resource group of the second type in FIG. 31 may be replaced by the second resource group of the first type, and the second resource group of the sixth type may be replaced by the second resource group of the third type, where Taking 8 eREGs as an example, the predetermined order of the 8 eREGs is eREG1, eREG2, eREG3, eREG4, eREG5, eREG6, eREG7, eREG8, in the second resource group of the second type, according to the time domain after the time domain In order, each RE loop belongs to the first to eighth eREGs sequentially numbered in the above order.
  • each RE in the first column of OFDM symbols belongs to eREGs numbered 1, 3, 5, and 7 in turn
  • each RE in the second column of OFDM symbols belongs to eREGs numbered 2, 4, 6, and 8 in turn
  • the overall attribution belongs to happening
  • the attribution of the REs in the second resource group of the third type to the fifth type refers to the relationship between the second resource group of the sixth type to the eighth type and the second resource group of the second type, where no longer Narration.
  • each second resource group is not limited. In the actual implementation process, the foregoing second resource group may also be in other forms, where Do - repeat.
  • the second one is a second resource group of the sixth type, the rest being a second resource group of the second type; among the seven second resource groups of the second row in the frequency domain, the second one is the second resource group of the second type
  • the rest are the second resource group of the sixth type; the second resource group of the third row in the third row in the frequency domain, the second resource group of the sixth type, the rest are the second type a second resource group; wherein, only the second resource group of the sixth type of the second row and the seventh column is obtained by performing row replacement on the second resource group of the second type, and the remaining second resource group of the sixth type is A column permutation is performed on the second resource group of the second type.
  • the symbol of the DMRS is adopted.
  • the specific form of the second resource group division of the symbol in which the DMRS is located is not limited. In the actual execution process, the second resource group of the symbol in which the DMRS is located may also be in other forms. Do not do - repeat.
  • PDCCH Physical downlink control channel
  • CRS common reference signal
  • DMRS demodulation reference signal
  • CSI-RS measurement reference signal
  • the embodiment of the present invention obtains a division rule divided into twenty-two second resource groups in the set of physical resource units, according to the location of the RE included in each first resource group and the second resource group.
  • the control channel is mapped to the at least one first resource group for transmission according to a specific rule.
  • the number of REs included in each resource unit group or control channel unit is made equal, and the mapped REs are all distributed in the entire physical resource block pair, so that each resource unit The channel estimation performance of the group or control channel unit is as close as possible, and a larger frequency domain is obtained.
  • Time domain diversity gain, and obtaining a larger frequency domain and time domain diversity gain, and mapping the first resource group of the symbol in which the DMRS is located may be such that each of the first resource groups is uniformly distributed on the OFDM symbol and the subcarrier. Conducive to the allocation and sharing of power.
  • the present embodiment provides a method for transmitting a control channel.
  • All REs of a set of physical resource units include twenty-one resource groups, including 16 eREGs. As shown in FIG. 32, the method includes:
  • each of the two resource groups is composed of 4 consecutive subcarriers and 2 OFDM symbols.
  • each RE loop belongs to the first to sixteenth eREGs sequentially numbered according to the above sequence, and the remaining resource group sets are Performing column permutation and column cyclic shift on the first resource group set; the resource group in the last two OFDM symbols (the OFDM symbol in which the DMRS is located) is between the subcarriers of the resource group included in the first two OFDM symbols The cyclic shift is obtained.
  • mapping results of 16 eREGs are: 1,2,3,4,5,6,7,8,9,10,11,12; in the second column of OFDM symbols, 16 The mapping result of eREG is: 5,6,7,8,9,10,11,12,13,14,15,16; In the third column of OFDM symbols, the mapping result of 16 eREGs is: 9,10, 11,12,13,14,15,16,1,2,3,4; In the fourth column of OFDM symbols, the mapping results of 16 eREGs are: 13,14,15,16,1,2,3, 4,5,6,7,8; In the fifth column of OFDM symbols, the mapping results of 16 eREGs are: 5,6,7,8,9,10,11,12,13,14,15,16; In the sixth column of OFDM symbols, the mapping results of 16 eREGs are: 9,10,11,12,13,14,15,16,1,2,3,4; in the seventh column of OFDM symbols, 16 The mapping result of
  • the specific form of the resource group division of the symbol in which the DMRS is located is not limited. In the actual execution process, the resource group of the symbol in which the DMRS is located may also be in other forms, and is not used here. Narration.
  • a control channel to the RE corresponding to the at least one first resource group for transmission. It should be noted that, when the location of the RE included in the at least one first resource group is used to transmit the second signal, the modulation symbol of the control signaling is not mapped to the RE, where the second signal At least one of a physical downlink control channel PDCCH, a common reference signal CRS, a demodulation reference signal DMRS, and a measurement reference signal CSI-RS is included.
  • PDCCH Physical downlink control channel
  • CRS common reference signal
  • DMRS demodulation reference signal
  • CSI-RS measurement reference signal
  • the embodiment of the present invention obtains a partitioning rule divided into twenty-one resource groups in a set of physical resource units, according to the location of the RE included in each first resource group, and the subcarriers and OFDM in the resource group.
  • a correspondence of specific rules of the location of the symbol, the control channel is mapped to the at least one first resource group for transmission according to a specific rule.
  • each resource unit group or control channel unit When considering various physical signals and physical channels and the like, the number of REs included in each resource unit group or control channel unit is made equal, and the mapped REs are evenly distributed in the entire physical resource block pair, so that each resource unit group Or the channel estimation performance of the control channel unit is as close as possible, and a larger frequency domain and time domain diversity gain are obtained, and a larger frequency domain and time domain diversity gain are obtained, and the mapping of the first resource group of the symbol in which the DMRS is located is obtained.
  • each first resource group is distributed on OFDM symbols and subcarriers Uniform amount, which is conducive to the allocation and sharing of power.
  • the embodiment provides a base station.
  • the base station includes:
  • the obtaining unit 1201 is configured to obtain a correspondence between an index of the first resource group and a physical resource unit RE in the physical resource unit set, where the first resource group is a resource unit group eREG or REG, or is a control channel. a unit eCCE or CCE, a set of physical resource units corresponding to at least one of the first resource groups;
  • the mapping unit 1202 is configured to map the control channel to the RE corresponding to the at least one first resource group for transmission.
  • the obtaining unit 1201 may be configured to: receive high-level signaling on the network side, and obtain a correspondence between an index of the first resource group included in the high-layer signaling and a physical resource unit RE in the physical resource unit set. And/or obtaining a correspondence between an index of the predefined first resource group and a physical resource unit RE in the physical resource unit set.
  • the mapping between the index of the first resource group and the physical resource unit RE in the physical resource unit set includes: an index value of a frequency domain subcarrier of an RE in the physical resource unit set is k, a time domain
  • the index value of the orthogonal frequency division multiplexing OFDM symbol has a functional relationship between the index of the first resource group and the k and the said.
  • the function relationship includes:
  • N n , where N is the number of the first resource group in the set of physical resource units, n is an index of the first resource group, and a frequency domain
  • the index value of the subcarrier is k
  • the RE of the index of the time domain OFDM symbol belongs to the nth first resource group
  • mod is the remainder operation
  • a and b are positive integers greater than or equal to 1
  • c is greater than or equal to 0. The integer.
  • n ranges from 0 to N1, or from 1 to N, and the value range of the k is one of the following: 0 to the system bandwidth, the number of all subcarriers is reduced by 1, and the value is 0 to one physical.
  • the resource block contains the number of subcarriers minus 1, and is 0 to at least one physical resource block pair of the enhanced control channel allocated to the user.
  • the number of subcarriers included is decremented by 1.
  • the mapping between the index of the first resource group and the physical resource unit RE in the physical resource unit set includes: the physical resource unit set includes at least two second resource groups, each of the second resource groups There is a corresponding relationship between the REs and the indexes of the first resource group, where the second resource group includes consecutive at least one subcarrier and consecutive at least one OFDM symbol.
  • the consecutive at least one subcarrier and the continuous at least one OFDM symbol are consecutive subcarrier continuous and consecutive OFDM symbols after the pilot is deducted, or the consecutive at least one subcarrier and the continuous at least one OFDM.
  • the symbol is a continuous subcarrier containing a position where the pilot is located or a continuous OFDM symbol.
  • the number of indexes of the first resource group corresponding to all REs included in each of the second resource groups is: the number of the first resource groups included in the physical resource unit set.
  • each of the second resource groups in the set of physical resource units includes equal numbers of REs occupied by at least one type of second signal, and the second signal is a demodulation reference signal DMRS. , a common reference signal CRS, a physical downlink control channel PDCCH, or a measurement reference signal CSI-RS.
  • each RE of each type of the second resource group and the first resource group includes at least one of the following:
  • each RE loop sequentially belongs to the at least one first resource group numbered in a predetermined order according to the order of the time domain after the frequency domain;
  • each RE loop sequentially belongs to the at least one first resource group numbered in a predetermined order according to the order of the pre-frequency domain post-time domain;
  • Corresponding relationship between each RE and the at least one first resource group in a second resource group of the third type is a correspondence between each RE in the second resource group of the first type and at least one first resource group Permutation between OFDM symbols in the time domain and/or permutation between subcarriers in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is a correspondence between each RE in the second resource group of the first type and at least one first resource group. a cyclic shift of the relationship in the time domain and/or a cyclic shift in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is that the correspondence between each RE in the second resource group of the first type and the at least one first resource group is Permutation between OFDM symbols on a domain and/or permutation between subcarriers in the frequency domain, and cyclic shift in the time domain and/or cyclic shift in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is that the correspondence between each RE in the second resource group of the second type and the at least one first resource group is Permutation between OFDM symbols on a domain and/or permutation between subcarriers in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is that the correspondence between each RE in the second resource group of the second type and the at least one first resource group is Cyclic shift of the domain and/or cyclic shift in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is that the correspondence between each RE in the second resource group of the first type and the at least one first resource group is Permutation between OFDM symbols on a domain and/or permutation between subcarriers in the frequency domain, and cyclic shift in the time domain and/or cyclic shift in the frequency domain.
  • the RE in the OFDM symbol in which the demodulation reference signal DMRS is located is set to at least one of the second resource groups.
  • the second resource group further includes at least one of the following:
  • a second resource group of the ninth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, wherein the second resource group in the ninth type
  • the REs corresponding to each of the first resource groups are on different subcarriers and on different OFDM symbols;
  • each RE cycle belongs to all the first resource groups numbered sequentially; a second resource group of the eleventh type, including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the eleventh type
  • Corresponding relationship between each RE and the at least one first resource group is a replacement between OFDM symbols in the time domain in the corresponding relationship between the respective REs in the second resource group of the tenth type and the at least one first resource group. Substitution between subcarriers in the frequency domain;
  • each RE and the at least one first resource group is a cyclic shift of the correspondence between each RE and the at least one first resource group in the second resource group of the tenth type in at least one OFDM symbol and/ Or a cyclic shift in at least one subcarrier;
  • each RE and the at least one first resource group is a cyclic shift of the correspondence between each RE and the at least one first resource group in the second resource group of the tenth type in at least one OFDM symbol and/ Or cyclic shift in at least one subcarrier, and permutation between OFDM symbols in the time domain and/or permutation between subcarriers in the frequency domain;
  • each RE loop belongs to all the first resource groups sequentially numbered in sequence;
  • a second resource group of the fifteenth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the fifteenth type
  • the correspondence between the respective REs and the at least one first resource group is a replacement between the OFDM symbols in the time domain and the correspondence between the respective REs in the fourth resource group of the fourteenth type and the at least one first resource group. Or a replacement between subcarriers in the frequency domain;
  • a second resource group of the sixteenth type including all REs in the OFDM symbol in which the DMRS is located, Or all other REs in which the DMRS occupies the RE in the OFDM symbol in which the DMRS is located, and the correspondence between each RE and the at least one first resource group in the second resource group of the sixteenth type is the fourteenth type a cyclic shift of a correspondence between each RE in the second resource group and at least one first resource group in at least one OFDM symbol and/or a cyclic shift in at least one subcarrier;
  • a second resource group of the seventeenth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the seventeenth type
  • Corresponding relationship between each RE and the at least one first resource group is a cyclic shift of the correspondence between each RE and the at least one first resource group in the second resource group of the fourteenth type in at least one OFDM symbol / or cyclic shift in at least one subcarrier, and permutation between OFDM symbols in the time domain and / or permutation between subcarriers in the frequency domain.
  • the subcarriers occupied by the DMRS are not considered, the subcarriers in which the REs included in each of the first resource groups are separated by one subcarrier, and the frequency of each RE
  • the subcarrier position of the domain is cyclically incremented or decremented as the index value of the OFDM symbol is incremented, and the subcarriers in which the positions of the REs of the two first resource groups constituting one eCCE are completely different; when each of the first resource groups includes When the OFDM occupied by the RE is less than the total OFDM symbol occupied by the ninth type of the second resource group, at least two OFDM symbols of the positions of the REs of the two first resource groups constituting one eCCE are different. OFDM symbol.
  • the remaining REs of the OFDM symbol after the OFDM symbol is included in the set of the physical resource unit includes two second resource groups, where the first time slot of the physical resource unit set is deducted from the OFDM symbol where the DMRS is located.
  • the second time slot deducts the OFDM symbol in which the DMRS is located as the second second resource group;
  • the second resource group included in the symbol in which the DMRS is located adopts any one of the second resource groups of the ninth to seventeenth types or a combination of the second resource groups of at least two types.
  • the first one of the second resource group and the second resource group are both the second resource group of the first type or the second resource group of the second type.
  • the first RE of the second second resource group is connected to the first second resource group.
  • the last RE performs a correspondence between the RE and the first resource group.
  • the first one of the second resource group and the second one of the resource groups are respectively the second resource group of the first type and the second resource group of the third type, or a second resource group of the first type and a second resource group of the fourth type, or a second resource group of the first type and a second resource group of the fifth type, respectively a second resource group of the second type and a second resource group of the sixth type, or a second resource group of the second type and a second resource group of the seventh type, respectively a second resource group of the second type and a second resource group of the eighth type.
  • the physical resource unit set includes two the second resource groups, where the first time slot of the physical resource unit set is the first one of the second resource group, and the second time slot The second said second resource group.
  • the first one of the second resource group and the second one of the resource groups are the second resource group of the same type.
  • the first one of the second resource group and the second resource group are both the second resource group of the first type or the second resource group of the second type.
  • the first RE of the second second resource group is followed by the last RE of the first second resource group, and the RE is corresponding to the first resource group.
  • the first one of the second resource group and the second one of the resource groups are respectively the second resource group of the first type and the second resource group of the third type, or a second resource group of the first type and a second resource group of the fourth type, or a second resource group of the first type and a second resource group of the fifth type, respectively a second resource group of the second type and a second resource group of the sixth type, or a second resource group of the second type and a second resource group of the seventh type, respectively a second resource group of the second type and a second resource group of the eighth type.
  • the remaining REs of the OFDM symbol after the OFDM symbol is included in the set of the physical resource unit includes four second resource groups, where the first time slot of the physical resource unit set is deducted
  • the first 6 consecutive subcarriers of the remaining OFDM symbols of the OFDM symbol in which the DMRS is located constitute the first one of the second resource groups;
  • the first slot is deducted from the last 6 subcarriers of the remaining OFDM symbols of the OFDM symbol in which the DMRS is located Two second resource groups;
  • the first time slot deducting the first six subcarriers of the remaining OFDM symbols of the OFDM symbol in which the DMRS is located constitutes the third said second resource group;
  • the fourth said second resource group ;
  • the second resource group included in the symbol in which the DMRS is located adopts any one of the second resource group of the ninth type to the second resource group of the seventeenth type, or the second resource of the ninth type is adopted.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are all the first type The second resource group or the second resource group of the second type.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are respectively the first type At least one of a second resource group, a second resource group of the third type, a second resource group of the fourth type, and a second resource group of the fifth type; or, the first The second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are respectively the second resource group of the second type, At least one of the second resource group of the sixth type, the second resource group of the seventh type, and the second resource group of the eighth type.
  • the physical resource unit set includes four second resource groups, where a first six subcarriers of a first time slot constitute a first one of the second resource groups; 6 subcarriers constitute a second of the second resource groups; the first 6 subcarriers of the second time slot constitute a third of the second resource group; the last 6 subcarriers of the second time slot form a fourth The second resource group.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are all the first type Second resource group, or Both are the second resource group of the second type.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are respectively the first At least one of a second resource group of a type, a second resource group of the third type, a second resource group of the fourth type, and a second resource group of the fifth type; or, the first The second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are respectively the second resource group and the second type At least one of the second resource group of the sixth type, the second resource group of the seventh type, and the second resource group of the eighth type.
  • the remaining RE of the OFDM symbol in which the DMRS is deducted includes 12 second resource groups, where there are 4 columns of the second resource group in the time domain, and the frequency domain has 3 rows of the second resource group, the remaining REs of the OFDM symbols in which the DMRS is deducted in each slot includes 6 of the second resource groups, and each of the second resource groups has 4 consecutive subcarriers and two OFDM symbol composition.
  • the 12 second resource groups are all the second resource group of the same type.
  • the 12 second resource groups are the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the At least one of the second resource groups of the five types; or, the second resource groups of the second type are the second resource group of the second type, the second resource group of the sixth type, and the At least one of a seventh resource group of seven types and a second resource group of the eighth type.
  • the second resource group of the symbol in which the DMRS is located adopts any one of the second resource group of the ninth type to the second resource group of the seventeenth type, or adopts the ninth type a combination of at least two types of the second resource group of the second resource group to the second resource group of the seventeenth type; wherein, the RE of the DMRS where the DMRS is deducted is included in the four second resource groups or the six second resource groups.
  • Each of the four second resource groups or the six second resource groups includes four consecutive subcarriers and two OFDM symbols;
  • the 12 said second resource groups are one of the following:
  • the six second resource groups of the first time slot are all the second resource group of the second type, and the six second resource groups of the second time slot are all the second resource group of the sixth type or a second resource group of the seventh type; a second resource located in the first column and the second column in the second resource group of the second row on the frequency domain;
  • the source group is the second resource group of the sixth type; in the second resource group of the first row on the frequency domain, the second resource group located at the third column and the fourth column position is the sixth type a second resource group; in the second resource group of the third row on the frequency domain, the second resource group located at the third column and the fourth column position is the second resource group of the sixth type; the remaining six
  • the second resource group is the second resource group of the second type;
  • the second resource group located at the second row location is the second resource group of the sixth type; the second resource group of the second column in the time domain The second resource group located in the second row position is the second resource group of the eighth type, and the second resource group located in the first row and the third row location is the second resource group of the seventh type; In the second resource group of the third column on the time domain, the second resource group located at the first row and the third row location is the second resource group of the sixth type; the fourth column of the time domain In the second resource group, the second resource group located at the second row location is the second resource group of the seventh type, and the second resource group located at the first row and the third row location is the second resource of the eighth type. Group; the remaining 3 second resource groups are the second resource group of the second type.
  • the set of physical resource units includes 18 second resource groups, where there are 4 columns of the second resource group in the time domain, and 3 rows of the second resource group in the frequency domain.
  • Each of the second resource groups is composed of 4 consecutive subcarriers and 2 OFDM symbols.
  • the 18 second resource groups are all the second resource group of the same type.
  • the 18 second resource groups are the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the At least one of the fifth type of the second resource group; or, the second resource group of the second type, the second resource group of the sixth type, and the second resource group of the seventh type, respectively At least one of the second resource groups of the eighth type.
  • the second resource group located at the second row location is the second resource group of the sixth type; the second column of the time domain In the second resource group, the second resource group located at the second row location is the second resource group of the eighth type, and the second resource group located at the first row and the third row location is the seventh type of the first resource group.
  • the second resource group of the row location is the second resource group of the seventh type, and the second resource group located at the first row and the third row location is the second resource group of the eighth type; the remaining three The second resource group is the second resource group of the second type.
  • the remaining REs of the OFDM symbol in which the set of physical resource units are deducted includes 15 second resource groups, where there are 5 columns of the second resource group in the time domain, and the frequency domain has 3 rows of the second resource group, where each second resource group is composed of 4 consecutive subcarriers and two OFDM symbols occupying a position occupied by REs that do not consider DMRS.
  • the 15 second resource groups are all the second resource group of the same type.
  • the 15 second resource groups are the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the At least one of the fifth type of the second resource group; or, the second resource group of the second type, the second resource group of the sixth type, and the second resource group of the seventh type, respectively At least one of the second resource groups of the eighth type.
  • the second resource group of the symbol in which the DMRS is located adopts any one of the second resource group of the ninth type to the second resource group of the seventeenth type, or adopts the ninth type a combination of at least two types from the second resource group to the second resource group of the seventeenth type;
  • the RE of the DMRS where the DMRS is deducted is included in three second resource groups, and each of the two second resource groups includes two consecutive subcarriers and four OFDM symbols; or All the REs of the symbols in which the DMRS is located are included in the six second resource groups, and each of the six second resource groups includes four consecutive subcarriers and two OFDM symbols;
  • the 15 of the second resource groups are one of the following:
  • the second resource group located at the first row and the third row location is the second resource group of the sixth type; the remaining 13 second resource groups are The second resource group of the second type; In the second resource group of the second row on the frequency domain, the second resource group located at the first column, the third column, the fourth column, and the fifth column position is the second resource group of the sixth type; In the second resource group of the second column on the time domain, the second resource group located at the first row and the third row location is the second resource group of the sixth type; the remaining 9 second resource groups are all a second type of second resource group;
  • the second resource group located at the first column and the fourth column position is the second resource group of the sixth type, and the second resource located at the fifth column position
  • the group is the second resource group of the eighth type; in the second resource group of the second column on the time domain, the second resource group located at the first row and the third row location is the sixth type of the first resource group
  • Two resource groups; in the second resource group of the third column on the time domain, all the second resource groups are the second resource group of the seventh type; the second resource of the fifth column in the time domain In the group, the second resource group located at the first row and the third row location is the second resource group of the seventh type; the remaining five second resource groups are all the second resource group of the second type.
  • the REs of the physical resource unit set include 21 second resource groups, where there are 7 second resource groups in the time domain, and 3 second resource groups in the frequency domain, and each second resource The group consists of 4 consecutive subcarriers and 2 OFDM symbols.
  • the 21 second resource groups are all the second resource group of the same type.
  • the 21 second resource groups are respectively the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the fifth type At least one of the second resource groups; or, the second resource group of the second type, the second resource group of the sixth type, the second resource group of the seventh type, and the At least one of the second resource group of the eighth type.
  • the second resource group located in the first column, the third column, the fourth column, the fifth column, and the sixth column is the second resource group a second resource group of the sixth type obtained by replacing the OFDM symbols in the time domain by the second resource group of the type; the second resource of the seventh column in the second resource group of the second row in the frequency domain The group is the second resource group of the sixth type obtained by replacing the second resource group of the second type with the subcarriers in the frequency domain; In the second resource group of the second column, the second resource group located at the first row and the third row position is the sixth obtained by replacing the OFDM symbols in the time domain with the second resource group of the second type. a second resource group of the type; the remaining second resource group is the second resource group of the second type.
  • the modulation symbol of the control signaling is mapped to the RE other than the RE that transmits the second signal, where the location of the RE corresponding to the at least one first resource group is used to transmit the second signal, where
  • the second signal includes at least one of a physical downlink control channel PDCCH, a common reference signal CRS, a demodulation reference signal DMRS, and a measurement reference signal CSI-RS; the physical resource unit set is at least one physical resource block pair.
  • the embodiment of the present invention maps the control channel to a specific rule according to the corresponding relationship by acquiring the correspondence between the index of the first resource group and the physical resource unit RE in the physical resource unit set.
  • the RE corresponding to the at least one first resource group is transmitted.
  • each resource unit group or control channel unit When considering various physical signals and physical channels and the like, the number of REs included in each resource unit group or control channel unit is made equal, and the mapped REs are all distributed in the entire physical resource block pair, so that each resource unit
  • the channel estimation performance of the group or control channel unit is as close as possible, and a larger frequency domain and time domain diversity gain are obtained, and the first resource group of the symbol in which the DMRS is located may be mapped in such a manner that each first resource group is in the OFDM symbol and the sub-band.
  • the distribution on the carrier is as uniform as possible, which is beneficial to the allocation and sharing of power.
  • the embodiment provides a terminal. As shown in FIG. 35, the terminal includes:
  • the receiving unit 1301 is configured to receive signaling sent by the sending end.
  • the obtaining unit 1302 is configured to obtain a correspondence between an index of the first resource group and a physical resource unit RE in the physical resource unit set, where the first resource group is a resource unit group eREG or REG, or is a control channel. a unit eCCE or CCE, a set of physical resource units corresponding to at least one of the first resource groups;
  • the demapping unit 1303 is configured to demap the control channel from the RE corresponding to the first resource group in the signaling according to the correspondence.
  • the acquiring unit 1302 is specifically configured to: receive high-layer signaling on the network side, and obtain a correspondence between an index of the first resource group included in the high-layer signaling and a physical resource unit RE in the physical resource unit set. And/or obtaining a correspondence between an index of the predefined first resource group and a physical resource unit RE in the physical resource unit set.
  • the mapping between the index of the first resource group and the physical resource unit RE in the physical resource unit set includes: an index value of a frequency domain subcarrier of an RE in the physical resource unit set is k, a time domain
  • the index value of the orthogonal frequency division multiplexing OFDM symbol has a functional relationship between the index of the first resource group and the k and the said.
  • the function relationship includes:
  • N n , where N is the number of the first resource group in the set of physical resource units, n is an index of the first resource group, and frequency
  • the index value of the domain subcarrier is k, the RE of the index of the time domain OFDM symbol belongs to the nth first resource group, mod is the remainder operation, a and b are positive integers greater than or equal to 1, and c is greater than or equal to An integer of 0.
  • n ranges from 0 to N1, or from 1 to N
  • the value range of the k is one of the following: 0 to the system bandwidth, the number of all subcarriers is reduced by 1, and the value is 0 to one physical.
  • the number of subcarriers included in the resource block is decreased by 1, and is 0.
  • At least one physical resource block pair of the enhanced control channel allocated to the user is decremented by one.
  • the mapping between the index of the first resource group and the physical resource unit RE in the physical resource unit set includes: the physical resource unit set includes at least two second resource groups, each of the second resource groups There is a corresponding relationship between the REs and the indexes of the first resource group, where the second resource group includes consecutive at least one subcarrier and consecutive at least one OFDM symbol.
  • the consecutive at least one subcarrier and the continuous at least one OFDM symbol are consecutive subcarrier continuous and consecutive OFDM symbols after the pilot is deducted, or the consecutive at least one subcarrier and the continuous at least one OFDM.
  • the symbol is a continuous subcarrier containing a position where the pilot is located or a continuous OFDM symbol.
  • the first resource group corresponding to all the REs included in each of the second resource groups The number of references is: the number of the first resource groups included in the physical resource unit set.
  • each of the second resource groups in the set of physical resource units includes equal numbers of REs occupied by at least one type of second signal, and the second signal is a demodulation reference signal DMRS. , a common reference signal CRS, a physical downlink control channel PDCCH, or a measurement reference signal CSI-RS.
  • each RE of each type of the second resource group and the first resource group includes at least one of the following:
  • each RE loop sequentially belongs to the at least one first resource group numbered in a predetermined order according to the order of the time domain after the frequency domain;
  • each RE loop sequentially belongs to the at least one first resource group numbered in a predetermined order according to the order of the pre-frequency domain post-time domain;
  • Corresponding relationship between each RE and the at least one first resource group in a second resource group of the third type is a correspondence between each RE in the second resource group of the first type and at least one first resource group Permutation between OFDM symbols in the time domain and/or permutation between subcarriers in the frequency domain;
  • Corresponding relationship between each RE and the at least one first resource group in a second resource group of the fourth type is a correspondence between each RE in the second resource group of the first type and at least one first resource group Cyclic shift in the time domain and/or cyclic shift in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is that the correspondence between each RE in the second resource group of the first type and the at least one first resource group is Permutation between OFDM symbols on a domain and/or permutation between subcarriers in the frequency domain, and cyclic shift in the time domain and/or cyclic shift in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is that the correspondence between each RE in the second resource group of the second type and the at least one first resource group is Permutation between OFDM symbols on a domain and/or permutation between subcarriers in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is the correspondence between each RE in the second resource group of the second type and the at least one first resource group. Cyclic shift in the time domain and/or cyclic shift in the frequency domain;
  • the correspondence between each RE and the at least one first resource group is that the correspondence between each RE in the second resource group of the first type and the at least one first resource group is Permutation between OFDM symbols on a domain and/or permutation between subcarriers in the frequency domain, and cyclic shift in the time domain and/or cyclic shift in the frequency domain.
  • the RE in the OFDM symbol in which the demodulation reference signal DMRS is located is set to at least one of the second resource groups.
  • the second resource group further includes at least one of the following:
  • a second resource group of the ninth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, wherein the second resource group in the ninth type
  • the REs corresponding to each of the first resource groups are on different subcarriers and on different OFDM symbols;
  • each RE cycle belongs to all the first resource groups numbered sequentially;
  • a second resource group of the eleventh type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the eleventh type
  • Corresponding relationship between each RE and the at least one first resource group is a replacement between OFDM symbols in the time domain in the corresponding relationship between the respective REs in the second resource group of the tenth type and the at least one first resource group. Substitution between subcarriers in the frequency domain;
  • a second resource group of the twelfth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the twelfth type
  • Corresponding relationship between each RE and the at least one first resource group is a cyclic shift of the correspondence between each RE and the at least one first resource group in the second resource group of the tenth type in at least one OFDM symbol and/ Or a cyclic shift in at least one subcarrier
  • a second resource group of the thirteenth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the thirteenth type
  • Corresponding relationship between each RE and the at least one first resource group is a cyclic shift of the correspondence between each RE and the at least one first
  • each RE loop belongs to all the first resource groups sequentially numbered in sequence;
  • a second resource group of the fifteenth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the fifteenth type
  • the correspondence between the respective REs and the at least one first resource group is a replacement between the OFDM symbols in the time domain and the correspondence between the respective REs in the fourth resource group of the fourteenth type and the at least one first resource group. Or a replacement between subcarriers in the frequency domain;
  • a second resource group of the sixteenth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the sixteenth type
  • Corresponding relationship between each RE and the at least one first resource group is a cyclic shift of the correspondence between each RE and the at least one first resource group in the second resource group of the fourteenth type in at least one OFDM symbol / or cyclic shift in at least one subcarrier;
  • a second resource group of the seventeenth type including all REs in the OFDM symbol in which the DMRS is located, or all other REs in the OFDM symbol in which the DMRS is located, and the RE of the DMRS is occupied, in the second resource group of the seventeenth type
  • Corresponding relationship between each RE and the at least one first resource group is a cyclic shift of the correspondence between each RE and the at least one first resource group in the second resource group of the fourteenth type in at least one OFDM symbol / or cyclic shift in at least one subcarrier, and permutation between OFDM symbols in the time domain and / or permutation between subcarriers in the frequency domain.
  • the subcarriers occupied by the DMRS are not considered, the subcarriers in which the REs included in each of the first resource groups are separated by one subcarrier, and the frequency of each RE
  • the subcarrier position of the domain is cyclically incremented or decremented as the index value of the OFDM symbol is incremented, and the subcarriers in which the positions of the REs of the two first resource groups constituting one eCCE are completely different; when each of the first resource groups includes When the OFDM occupied by the RE is less than the total OFDM symbol occupied by the ninth type of the second resource group, at least two OFDM symbols of the positions of the REs of the two first resource groups constituting one eCCE are different. OFDM symbol.
  • the remaining REs of the OFDM symbol after the OFDM symbol is included in the set of the physical resource unit includes two second resource groups, where the first time slot of the physical resource unit set is deducted from the OFDM symbol where the DMRS is located.
  • the second time slot deducts the OFDM symbol in which the DMRS is located as the second second resource group;
  • the second resource group included in the symbol in which the DMRS is located adopts any one of the second resource groups of the ninth to seventeenth types or a combination of the second resource groups of at least two types.
  • the first one of the second resource group and the second resource group are both the second resource group of the first type or the second resource group of the second type.
  • the first RE of the second second resource group is followed by the last RE of the first second resource group, and the RE is associated with the first resource group.
  • the first one of the second resource group and the second one of the resource groups are respectively the second resource group of the first type and the second resource group of the third type, or a second resource group of the first type and a second resource group of the fourth type, or a second resource group of the first type and a second resource group of the fifth type, respectively a second resource group of the second type and a second resource group of the sixth type, or a second resource group of the second type and a second resource group of the seventh type, respectively a second resource group of the second type and a second resource group of the eighth type.
  • the physical resource unit set includes two the second resource groups, where the first time slot of the physical resource unit set is the first one of the second resource group, and the second time slot For the first Two of said second resource groups.
  • the first one of the second resource group and the second one of the resource groups are the second resource group of the same type.
  • the first one of the second resource group and the second resource group are both the second resource group of the first type or the second resource group of the second type.
  • the first RE of the second second resource group is followed by the last RE of the first second resource group, and the RE is corresponding to the first resource group.
  • the first one of the second resource group and the second one of the resource groups are respectively the second resource group of the first type and the second resource group of the third type, or a second resource group of the first type and a second resource group of the fourth type, or a second resource group of the first type and a second resource group of the fifth type, respectively a second resource group of the second type and a second resource group of the sixth type, or a second resource group of the second type and a second resource group of the seventh type, respectively a second resource group of the second type and a second resource group of the eighth type.
  • the remaining REs of the OFDM symbol after the OFDM symbol is included in the set of the physical resource unit includes four second resource groups, where the first time slot of the physical resource unit set is deducted from the OFDM symbol where the DMRS is located.
  • the first 6 consecutive subcarriers of the remaining OFDM symbols constitute the first of the second resource groups;
  • the first slot deducts the last 6 subcarriers of the remaining OFDM symbols of the OFDM symbol in which the DMRS is located to constitute the second said a second resource group;
  • the first time slot deducting the first 6 subcarriers of the remaining OFDM symbols of the OFDM symbol in which the DMRS is located constitutes the third said second resource group; the fourth said second resource group;
  • the second resource group included in the symbol in which the DMRS is located adopts any one of the second resource group of the ninth type to the second resource group of the seventeenth type, or the second resource of the ninth type is adopted.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are all the first type The second resource group or the second resource group of the second type.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are respectively the first type At least one of a second resource group, a second resource group of the third type, a second resource group of the fourth type, and a second resource group of the fifth type; or, the first The second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are respectively the second resource group of the second type, At least one of the second resource group of the sixth type, the second resource group of the seventh type, and the second resource group of the eighth type.
  • the physical resource unit set includes four second resource groups, where a first six subcarriers of a first time slot constitute a first one of the second resource groups; 6 subcarriers constitute a second of the second resource groups; the first 6 subcarriers of the second time slot constitute a third of the second resource group; the last 6 subcarriers of the second time slot form a fourth The second resource group.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are all the first type The second resource group or the second resource group of the second type.
  • the first one of the second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are respectively the first At least one of a second resource group of a type, a second resource group of the third type, a second resource group of the fourth type, and a second resource group of the fifth type; or, the first The second resource group, the second of the second resource group, the third of the second resource group, and the fourth of the second resource group are respectively the second resource group and the second type At least one of the second resource group of the sixth type, the second resource group of the seventh type, and the second resource group of the eighth type.
  • the remaining RE of the OFDM symbol in which the DMRS is deducted includes 12 second resource groups, where there are 4 columns of the second resource group in the time domain, and the frequency domain has 3 rows of the second resource group, and the OFDM symbols in which the DMRS is deducted are subtracted in each time slot.
  • the remaining REs include six of the second resource groups, each of the second resource groups having a continuous four subcarriers and two OFDM symbols.
  • the 12 second resource groups are all the second resource group of the same type.
  • the 12 second resource groups are the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the At least one of the second resource groups of the five types; or, the second resource groups of the second type are the second resource group of the second type, the second resource group of the sixth type, and the At least one of a seventh resource group of seven types and a second resource group of the eighth type.
  • the second resource group of the symbol in which the DMRS is located adopts any one of the second resource group of the ninth type to the second resource group of the seventeenth type, or adopts the ninth type a combination of at least two types of the second resource group of the second resource group to the second resource group of the seventeenth type; wherein, the RE of the DMRS where the DMRS is deducted is included in the four second resource groups or the six second resource groups.
  • Each of the four second resource groups or the six second resource groups includes four consecutive subcarriers and
  • the 12 said second resource groups are one of the following:
  • the six second resource groups of the first time slot are all the second resource group of the second type, and the six second resource groups of the second time slot are all the second resource group of the sixth type or All of the second resource groups of the seventh type; in the second resource group of the second row on the frequency domain, the second resource group located at the first column and the second column position is the sixth type of the first resource group a second resource group in the first row of the first row in the frequency domain; the second resource group located in the third column and the fourth column location is the second resource group of the sixth type; In the second resource group of the third row, the second resource group located at the third column and the fourth column position is the second resource group of the sixth type; the remaining 6 second resource groups are the second type Second resource group;
  • the second resource group located at the second row location is the second resource group of the sixth type; the second resource group of the second column in the time domain The second resource group located in the second row position is the second resource group of the eighth type, and the second resource group located in the first row and the third row location is the second resource group of the seventh type; In the second resource group of the third column on the time domain, the second resource group located at the first row and the third row location is the second resource group of the sixth type; In the second resource group of the fourth column on the time domain, the second resource group located at the second row location is the second resource group of the seventh type, and the second resource located at the first row and the third row location The group is the second resource group of the eighth type; the remaining three second resource groups are the second resource group of the second type.
  • the set of physical resource units includes 18 second resource groups, where there are 4 columns of the second resource group in the time domain, and 3 rows of the second resource group in the frequency domain.
  • Each of the second resource groups is composed of 4 consecutive subcarriers and 2 OFDM symbols.
  • the 18 second resource groups are all the second resource group of the same type.
  • the 18 second resource groups are the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the At least one of the fifth type of the second resource group; or, the second resource group of the second type, the second resource group of the sixth type, and the second resource group of the seventh type, respectively At least one of the second resource groups of the eighth type.
  • the second resource group located at the second row location is the second resource group of the sixth type; the second column of the time domain In the second resource group, the second resource group located at the second row location is the second resource group of the eighth type, and the second resource group located at the first row and the third row location is the seventh type of the first resource group.
  • a second resource group in a second resource group of the third column on the time domain, a second resource group located at the first row and the third row location is the second resource group of the sixth type;
  • the second resource group located at the second row location is the second resource group of the seventh type, and the second resource group located at the first row and the third row location is the Eight types of second resource groups; the remaining three second resource groups are the second type of second resource groups.
  • the remaining REs of the OFDM symbol in which the set of physical resource units are deducted includes 15 second resource groups, where there are 5 columns of the second resource group in the time domain, and the frequency domain has 3 rows of the second resource group, where each second resource group is composed of 4 consecutive subcarriers and two OFDM symbols occupying a position occupied by REs that do not consider DMRS.
  • the 15 second resource groups are all the second resource group of the same type.
  • the 15 second resource groups are the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the At least one of the fifth type of the second resource group; or, the second resource group of the second type, the second resource group of the sixth type, and the second resource group of the seventh type, respectively At least one of the second resource groups of the eighth type.
  • the second resource group of the symbol in which the DMRS is located adopts any one of the second resource group of the ninth type to the second resource group of the seventeenth type, or adopts the ninth type a combination of at least two types from the second resource group to the second resource group of the seventeenth type;
  • the RE of the DMRS where the DMRS is deducted is included in three second resource groups, and each of the two second resource groups includes two consecutive subcarriers and four OFDM symbols; or All the REs of the symbols in which the DMRS is located are included in the six second resource groups, and each of the six second resource groups includes four consecutive subcarriers and two OFDM symbols;
  • the 15 of the second resource groups are one of the following:
  • the second resource group located at the first row and the third row location is the second resource group of the sixth type; the remaining 13 second resource groups are The second resource group of the second type;
  • the second resource group located at the first column, the third column, the fourth column, and the fifth column position is the second resource group of the sixth type;
  • the second resource group located at the first row and the third row location is the second resource group of the sixth type;
  • the remaining 9 second resource groups are all a second type of second resource group;
  • the second resource group located at the first column and the fourth column position is the second resource group of the sixth type, and the second resource located at the fifth column position
  • the group is the second resource group of the eighth type; in the second resource group of the second column on the time domain, the second resource group located at the first row and the third row location is the sixth type of the first resource group
  • Two resource groups; in the second resource group of the third column on the time domain, all the second resource groups are the second resource group of the seventh type; the second resource of the fifth column in the time domain In the group, the second resource group located at the first row and the third row location is The second resource group of the seventh type; the remaining five second resource groups are all the second resource group of the second type.
  • the REs of the physical resource unit set include 21 second resource groups, where there are 7 second resource groups in the time domain, and 3 second resource groups in the frequency domain, and each second resource The group consists of 4 consecutive subcarriers and 2 OFDM symbols.
  • the 21 second resource groups are all the second resource group of the same type.
  • the 21 second resource groups are respectively the second resource group of the first type, the second resource group of the third type, the second resource group of the fourth type, and the fifth type At least one of the second resource groups; or, the second resource group of the second type, the second resource group of the sixth type, the second resource group of the seventh type, and the At least one of the second resource group of the eighth type.
  • the second resource group located in the first column, the third column, the fourth column, the fifth column, and the sixth column is the second resource group a second resource group of the sixth type obtained by replacing the OFDM symbols in the time domain by the second resource group of the type; the second resource of the seventh column in the second resource group of the second row in the frequency domain
  • the group is the second resource group of the sixth type obtained by replacing the second resource group of the second type in the frequency domain; in the second resource group of the second column in the time domain,
  • the second resource group located at the first row and the third row position is the second resource group of the sixth type obtained by replacing the OFDM symbols in the time domain with the second resource group of the second type;
  • the second resource group is the second resource group of the second type.
  • the demapping unit 1303 is further configured to detect the control channel to obtain control information.
  • the modulation symbol of the control signaling is mapped to the RE other than the RE that transmits the second signal, where the location of the RE corresponding to the at least one first resource group is used to transmit the second signal, where
  • the second signal includes at least one of a physical downlink control channel PDCCH, a common reference signal CRS, a demodulation reference signal DMRS, and a measurement reference signal CSI-RS;
  • the physical resource unit set is at least one physical resource block pair.
  • the method for transmitting the control channel, the base station, and the terminal provided by the embodiment of the present invention may implement the foregoing method embodiments.
  • the transmission method, the base station, and the terminal of the control channel provided by the embodiment of the present invention may be applicable to the transmission of the control channel in the LTE system, but are not limited thereto.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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  • Computer Security & Cryptography (AREA)

Abstract

La présente invention concerne un procédé de transmission pour un canal de commande, une station de base et un terminal, associés au domaine technique des communications. Selon l'invention, le procédé fait appel : à l'acquisition d'une corrélation entre un index d'un premier groupe de ressources et des éléments de ressources physiques (RE) d'un ensemble d'éléments de ressources physiques, le premier groupe de ressources étant un groupe d'éléments de ressources eREG ou REG, ou étant un élément de canal de commande eCCE ou CCE, un ensemble d'éléments de ressources physiques correspondant audit premier groupe de ressources ; et à la mise en correspondance du canal de commande avec le RE correspondant audit premier groupe de ressources à des fins de transmission. La présente invention peut être appliquée à la transmission d'un canal de commande dans un système LTE.
PCT/CN2012/079519 2012-08-01 2012-08-01 Procédé de transmission pour canal de commande, station de base et terminal WO2014019177A1 (fr)

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CN201280006961.2A CN103858400B (zh) 2012-08-01 2012-08-01 控制信道的传输方法、基站及终端
PCT/CN2012/079519 WO2014019177A1 (fr) 2012-08-01 2012-08-01 Procédé de transmission pour canal de commande, station de base et terminal

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CN109660323B (zh) * 2017-10-11 2020-10-20 维沃移动通信有限公司 一种配置csi-rs的时域位置的方法、基站和用户终端

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