WO2014019146A1 - 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
WO2014019146A1
WO2014019146A1 PCT/CN2012/079444 CN2012079444W WO2014019146A1 WO 2014019146 A1 WO2014019146 A1 WO 2014019146A1 CN 2012079444 W CN2012079444 W CN 2012079444W WO 2014019146 A1 WO2014019146 A1 WO 2014019146A1
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WO
WIPO (PCT)
Prior art keywords
ereg
resource block
block pair
physical resource
control channel
Prior art date
Application number
PCT/CN2012/079444
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English (en)
Chinese (zh)
Inventor
刘建琴
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201280007843.3A priority Critical patent/CN103748849B/zh
Priority to PCT/CN2012/079444 priority patent/WO2014019146A1/fr
Publication of WO2014019146A1 publication Critical patent/WO2014019146A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • the present application relates to communication technologies, and in particular, to a control channel transmission method, a base station, and a terminal. Background technique
  • a physical downlink control channel (Physical Downlink Control Channel) based on precoding is introduced.
  • PDCCH Physical Downlink Control Channel
  • ePDCCH Enhanced Physical Downlink Control Channel
  • the ePDCCH may be demodulated based on a User Equipment (UE) specific reference signal, that is, a Demodulation Reference Signal (DMRS).
  • UE User Equipment
  • DMRS Demodulation Reference Signal
  • the ePDCCH is transmitted in an area in which a downlink data channel is transmitted in one subframe, and is frequency-divided with a Physical Downlink Shared Channel (PDSCH).
  • UE User Equipment
  • DMRS Demodulation Reference Signal
  • the base station may send the ePDCCH on a physical resource block (PRB) with better channel conditions according to the channel status reported by the terminal.
  • PRB physical resource block
  • the physical resource blocks of two time slots may be referred to as a resource block pair (RB pair), which is generally referred to as a physical resource block pair.
  • aspects of the present application provide a control channel transmission method and a base station and a terminal for implementing control information for transmitting or receiving some control channels, such as ePDCCH bearers, through an eREG in a physical resource block pair.
  • some control channels such as ePDCCH bearers
  • An aspect of the present application provides a control channel transmission method, including:
  • each eCCE corresponding to the aggregation level of the control channel according to the aggregation level
  • the eREG the eREG information for mapping the control channel in each physical resource block pair, the number of the eREG in each physical resource block pair, and the resource corresponding to the central location of each physical resource block pair
  • the unit is used as a starting number, and is sequentially arranged to the resource unit corresponding to the edge position.
  • the control channel is mapped to the eREG corresponding to the determined eREG information;
  • the control information carried by the control channel is transmitted at a position where the eREG of the control channel is mapped.
  • control channel transmission method including:
  • the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk in the k candidate aggregation levels continues to be detected.
  • An aspect of the present application provides a control channel transmission method, including:
  • eREG information for mapping the control channel in each physical resource block pair according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level, where each physical resource block is aligned
  • the eREG is mapped to the first mapping area of each of the physical resource block pairs by using the first mapping rule, and mapped to the second mapping area of each of the physical resource block pairs by using the second mapping rule.
  • the first mapping area is composed of resource units for transmitting data
  • the second mapping area is composed of resource elements mapped by reference signals and/or other control channels of each physical resource block pair;
  • mapping according to the determined eREG information, the control channel to the eREG corresponding to the determined eREG information
  • control channel transmission method including:
  • eREG Determining eREG information for mapping the control channel in each physical resource block pair according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk, where each physical resource block is aligned
  • the eREG is mapped to the first mapping area of each of the physical resource block pairs by using the first mapping rule, and mapped to the second mapping area of each of the physical resource block pairs by using the second mapping rule.
  • the first mapping area is composed of resource units for transmitting data
  • the second mapping area is composed of resource elements mapped by reference signals and/or other control channels of each physical resource block pair; wherein k is An integer, Lk is any one of k candidate aggregation levels;
  • the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk in the k candidate aggregation levels continues to be detected.
  • a base station including:
  • a determining unit configured to determine at least one physical resource block pair for transmitting a control channel, and determining each physical resource block pair according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level
  • the mapping unit is configured to map the control channel to the eREG corresponding to the determined eREG information according to the eREG information determined by the determining unit;
  • a sending unit configured to send control information carried by the control channel at a location where the mapping unit maps an eREG of the control channel.
  • a terminal including:
  • a determining unit determining at least one physical resource block pair for transmitting a control channel, and determining, according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk, determining, for each physical resource block pair Mapping the eREG information of the control channel, where the number of the eREG in each physical resource block pair corresponds to a central location of each physical resource block pair
  • the resource unit is used as a starting number, and is sequentially arranged in a loop to the resource unit corresponding to the edge position; where k is an integer and Lk is any one of k candidate aggregation levels;
  • a detecting unit configured to detect, according to the eREG information determined by the determining unit, an eREG corresponding to the candidate eCCE corresponding to the Lk, and when the detection is correct, parsing the control channel from the detected correct eREG
  • the control information when the detection is incorrect, continues to detect the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk among the k candidate aggregation levels.
  • a base station including:
  • a determining unit configured to determine at least one physical resource block pair for transmitting a control channel, and determining each physical resource block pair according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level And eREG information for mapping the control channel, where the eREG in each physical resource block pair is mapped to the first mapping area in each of the physical resource block pairs by using the first mapping rule, and using the Mapping a second mapping rule to an eREG of the second mapping area in each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is configured by each of the physical resource blocks a resource unit composed of a center reference signal and/or other control channel mapping;
  • mapping unit configured to map the control channel to the eREG corresponding to the determined eREG information according to the eREG information determined by the determining unit;
  • a sending unit configured to send control information carried by the control channel at a location where the mapping unit maps an eREG of the control channel.
  • a terminal including:
  • a determining unit configured to determine at least one physical resource block pair for transmitting a control channel, and determining, according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk, determining each physical resource block pair And eREG information for mapping the control channel, where the eREG in each physical resource block pair is mapped to the first mapping area in each of the physical resource block pairs by using the first mapping rule, and using the Mapping a second mapping rule to an eREG of the second mapping area in each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is configured by each of the physical resource blocks a resource unit composed of a center reference signal and/or other control channel mapping; wherein k is an integer and Lk is any one of k candidate aggregation levels; a detecting unit, configured to detect, according to the eREG information determined by the determining unit, an eREG corresponding to the candidate
  • the embodiment of the present application determines at least one physical resource block pair for transmitting a control channel, and further, according to the aggregation level of the control channel, and the eREG corresponding to each eCCE corresponding to the aggregation level. Determining the eREG information for mapping the control channel in each physical resource block pair, the number of the eREG in each physical resource block pair, and the resource unit corresponding to the central location of each physical resource block pair As a starting number, the resource units corresponding to the edge positions are sequentially arranged, and the control channel is mapped to the eREG corresponding to the determined eREG information according to the determined eREG information, so that the mapping can be performed. At the location of the eREG of the control channel, the control information carried by the control channel is sent, so that control information for transmitting some control channels, such as ePDCCH bearers, through the eREG in the physical resource block pair is implemented.
  • some control channels such as ePDCCH bearers
  • the embodiment of the present application determines at least one physical resource block pair for transmitting a control channel, and further, according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk.
  • the resource units corresponding to the edge positions are sequentially arranged cyclically; wherein k is an integer and Lk is any one of k candidate aggregation levels, so that the Lk can be corresponding according to the determined eREG information.
  • the eREG corresponding to the candidate eCCE is detected, and when the detection is correct, the control information carried by the control channel is parsed from the detected correct eREG, and when the detection is incorrect, the k candidate aggregation levels are excluded.
  • the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than Lk continues to be detected, thereby realizing Some control channel reception control information carried by e.g. ePDCCH eREG physical resource block pair.
  • the embodiment of the present application determines at least one physical resource block pair for transmitting a control channel, and further, according to the aggregation level of the control channel, corresponding to each eCCE corresponding to the aggregation level.
  • eREG determine each physical resource block pair for mapping
  • the eREG information of the control channel, the eREG in each physical resource block pair is mapped to the first mapping area in each of the physical resource block pairs by using the first mapping rule, and using the second mapping
  • the rule is mapped to the eREG of the second mapping area in each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is referenced by each of the physical resource blocks.
  • control information carried by the control channel is sent, so that control information for transmitting some control channels, such as ePDCCH bearers, through the eREG in the physical resource block pair is implemented.
  • the embodiment of the present application determines at least one physical resource block pair for transmitting a control channel, and further, according to the candidate aggregation level Lk of the control channel and the candidate eCCE corresponding to the Lk.
  • eREG determining eREG information for mapping the control channel in each physical resource block pair, where the eREG in each physical resource block pair is mapped to each physical resource block pair by using the first mapping rule a first mapping area, and an eREG mapped to the second mapping area of each of the physical resource block pairs by using the second mapping rule, where the first mapping area is composed of resource units that transmit data, and the second The mapping area is composed of resource elements mapped by the reference signal and/or other control channel of each physical resource block pair; wherein k is an integer, and Lk is any one of k candidate aggregation levels, so that the determination can be performed according to the determination
  • the eREG information is used to detect the eREG corresponding to the candidate eCCE corresponding to the Lk, and when the detection is correct, the correct eREG is detected from the The control information carried by the control channel is obtained, and when the detection is incorrect, the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation
  • FIG. 1 is a schematic flowchart of a control channel transmission method according to an embodiment of the present application
  • 2 is a schematic diagram of a position of an eREG of a control channel mapping in a physical resource block pair in the embodiment corresponding to FIG. 1;
  • FIG. 3 is a schematic diagram of another location of a control channel mapping eREG in a physical resource block pair in the embodiment corresponding to FIG. 1;
  • FIG. 4 is a schematic diagram of another location of a control channel mapping eREG in a physical resource block pair in the embodiment corresponding to FIG. 1;
  • FIG. 5 is a schematic diagram of another location of a control channel mapping eREG in a physical resource block pair in the embodiment corresponding to FIG. 1;
  • FIG. 6 is a schematic diagram of another location of a control channel mapping eREG in a physical resource block pair in the embodiment corresponding to FIG. 1;
  • FIG. 7 is a schematic flowchart of a control channel transmission method according to another embodiment of the present disclosure
  • FIG. 8 is a schematic flowchart of a control channel transmission method according to another embodiment of the present disclosure
  • FIG. 10 is a schematic structural diagram of a base station according to another embodiment of the present disclosure
  • FIG. 1 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a base station according to another embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • the technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application.
  • the embodiments are part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present invention.
  • the technical solution of the present invention can be applied to a wireless communication system such as an LTE system or an LTE-A system.
  • the terminal may be an LTE system or a user equipment (UE) in the LTE-A system;
  • the base station may be an eNB in an LTE system or an LTE-A system.
  • the term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate: A exists separately, and A exists at the same time. And B, there are three cases of B alone.
  • the character '7' in this article generally means that the contextual object is an "or" relationship.
  • the downlink multiple access method usually uses orthogonal frequency division multiplexing multiple access.
  • Access Orthogonal Frequency Division
  • OFDMA Orthogonal Frequency Division Multiple
  • a normal downlink subframe consists of two slots (slots), each slot has 7 or 6 OFDM symbols, and a normal downlink subframe contains a total of 14 OFDM symbols or 12 OFDM symbols.
  • LTE Long Term Evolution
  • the Release 8/9/10 standard also defines the size of a Resource Block (RB).
  • RB Resource Block
  • One resource block contains 12 subcarriers in the frequency domain and half a subframe duration (ie, one time slot) in the time domain. Contains 7 or 6 OFDM symbols.
  • RB pairs, RB pairs resource block pairs
  • the resource block pair used by the physical resource is also called a physical resource block pair (Physical RB pair, PRB pair), and may also be referred to as a unit physical resource block. Therefore, the subsequent descriptions refer to PRB pairs, whether they are PRB, PRB pair or physical resource block or physical resource block pair.
  • control channels The various data carried on the subframe are organized by mapping various physical channels on the physical time-frequency resources of the subframe.
  • the various physical channels can be roughly divided into two categories: control channels and traffic channels.
  • control data generally referred to as control information
  • traffic data the data carried by the traffic channel
  • control data generally referred to as control information
  • traffic data traffic data
  • the fundamental purpose of transmitting a subframe is to transmit service data, and the role of the control channel is to assist in the transmission of service data.
  • Control Channel PDCCH
  • PDCCH Physical Downlink Control Channel
  • a PDCCH can map J 1 , 2, 4 or 8 CCEs, that is, 1 , 2, 4 or 8 CCEs, corresponding to aggregation levels 1 , 2, 4, 8.
  • Physical Downlink Control Channel based on precoding is introduced due to the introduction of multiple input multiple output (MIMO) and Coordinated Multiple Points (CoMP) technologies. ), that is, enhanced physical downlink control channel (Enhanced Physical Downlink) Control Channel, ePDCCH).
  • the ePDCCH may be demodulated based on a UE-specific reference signal, a Demodulation Reference Signal (DMRS).
  • DMRS Demodulation Reference Signal
  • Each ePDCCH can still be mapped to k CCE-like logical units, which are defined as enhanced Control Channel Element (eCCE), and the UE needs to perform blind detection on the terminal side.
  • eCCE enhanced Control Channel Element
  • the ePDCCH with an aggregation level of L can be mapped to L eCCEs, that is, composed of L eCCEs, as defined by the aggregation level in the PDCCH.
  • L eCCE consists of one or several eREGs.
  • FIG. 1 is a schematic flowchart of a control channel transmission method according to an embodiment of the present application, as shown in FIG. 1 .
  • each physical resource block pair determining eREG information for mapping the control channel in each physical resource block pair according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level, where each physical resource block is determined.
  • the number of the eREGs in the pair is the same as the resource unit corresponding to the center position of each physical resource block pair, and is sequentially arranged in the resource unit corresponding to the edge position.
  • execution body of 101 ⁇ 104 may be a base station.
  • the control channel may be an Enhanced Physical Downlink Control Channel (ePDCCH).
  • ePDCCH Enhanced Physical Downlink Control Channel
  • the determined eREG information may include an eREG number and an eREG identifier.
  • each physical resource block pair is optionally, in a possible implementation manner of this embodiment, the center of each physical resource block pair The location may be a central location of other resource elements other than the PDCCH mapped resource element in each of the physical resource block pairs.
  • each physical resource block pair The eREG in the middle may be composed of at least one resource unit of each of the physical resource block pairs.
  • the eREG in each physical resource block pair may be included in the physical resource block pair except the reference signal and/or other control information.
  • Reference signals may include, but are not limited to, common reference signals (Common
  • CRS CRS
  • DMRS Downlink Reference Signal
  • CSI-RS Channel Status Information Reference Signal
  • PRS Positioning Reference Signal
  • the number of the eREG in each physical resource block pair may be a resource corresponding to a central location of each physical resource block pair.
  • the unit is a starting number, and is spirally arranged in sequence to the resource unit corresponding to the edge position.
  • each physical resource block pair is (a, b), and the number of resource units in each physical resource block pair is M.
  • the number of the M resource units may be a starting number of the resource unit corresponding to the center position of each physical resource block pair, and is sequentially spirally incremented to the resource unit corresponding to the edge position, and the clock ring is rotated counterclockwise. Arrange for example. It is assumed that each physical resource block pair contains N eREGs, and N is the number of eREGs in each physical resource block pair.
  • n is the eREG number of the eREG in each unit resource unit block, and the value ranges from 1 to N
  • X is the resource unit number in the corresponding M resource units, ranging from 1 to M. The integer between.
  • n, n right, n up, and n left indicate that the resource unit corresponding to the center position is used as the starting position, and the resource unit corresponding to the edge position is sequentially spiraled in the counterclockwise direction, and the nx is satisfied.
  • One of n, n, n, and n left determined by k of the above equation.
  • nx x-1 of 1 n and 1 n right , 2 n up, 2 n left, 3 n down, 3 n right, 4 n up, 4 n and k nx are summed in each direction, then the resource unit of the nth eREG offset from the center position can be determined , thereby determining the position of the nth eREG.
  • the following is a physical resource block pair (including a total of 168 resource elements), including 12 subcarriers in the frequency domain, and 14 OFDM symbols in the time domain as an example.
  • the central location may be a resource in a physical resource block pair.
  • the central position of the unit that is, the median value of the frequency domain and the time domain, is used to represent the sixth subcarrier in the following form, and the resource unit corresponding to the seventh OFDM symbol, that is, (6, 7). This form can be used to simplify the representation of the following positions.
  • the resource unit numbers X in the 168 resource units corresponding to the eREG 1 are 1, 17, 33, 49, 65, 81, 97, 113, 129, 145, and 161, respectively.
  • the resource unit numbers X in the 168 resource units corresponding to the eREG 1 are 1, 17, 33, 49, 65, 81, 97, 113, 129, 145, and 161, respectively.
  • 1 n down +1 n right +2 n on +2 n left +3 n down +3 n right +4 n on +4 n left + .... +k nx x-1 .
  • the resource unit whose position is shifted upward is 8, and the resource unit that is shifted to the left with respect to the center position is 6, and therefore, the position of the resource unit numbered 33 can be determined as (7, 10).
  • the resource unit included in each of the 16 eREGs with respect to the central location offset may be determined, thereby determining the location of the resource unit included in each of the 16 eREGs, as shown in FIG. 2 Show.
  • Figure 2 shows a pair of physical resource blocks consisting of 168 resource elements. Each small square represents a resource unit, and the number is 16 eREG numbers, which are used to indicate the eREG to which each resource unit belongs.
  • the direction represents the frequency domain resource, and the horizontal direction represents the time domain resource.
  • the resource unit of the DMRS mapping is deducted further, the above method is utilized.
  • the resource unit that is included in each of the 16 eREGs with respect to the central location offset may be determined, thereby determining the location of the resource unit included in each of the 16 eREGs, as shown in FIG. 3, where the horizontal line shadow A resource unit that represents a DMRS map.
  • Figure 3 shows a physical resource block pair consisting of 168 resource elements (where 24 resource elements containing DMRS mapping, the eREGs mapped at these locations and corresponding numbers are deducted), each small square
  • the cell represents a resource unit, and the number is 16 eREG numbers, which are used to indicate the eREG to which each resource unit belongs.
  • the vertical direction represents the frequency domain resource
  • the horizontal direction represents the time domain resource.
  • the resource unit corresponding to the selected central location is used as the starting number of each physical resource block.
  • the cells are cyclically arranged, and the resource elements that encounter the DMRS mapping are skipped.
  • the location of the resource unit included in each of the 16 eREGs is determined, as shown in FIG. 4, wherein the horizontal line hatching indicates the resource unit of the DMRS mapping.
  • Each small square represents a resource unit, where the number is 16 eREGs, which is used to indicate the eREG to which each resource unit belongs.
  • the vertical direction represents the frequency domain resource
  • the horizontal direction represents the time domain resource.
  • the following will be a physical resource block pair (containing a total of 168 resource units), including in the frequency domain
  • the 12 subcarriers include 14 OFDM symbols in the time domain, and the central location thereof may be the central location of the resource elements other than the resource elements mapped by the PDCCH in the physical resource block pair.
  • the number of eREGs in the pair of physical resource blocks is 16, and the resource unit included in each eREG of each of the 16 eREGs can be determined to be offset from the central location by using the above method, thereby determining each of the 16 eREGs.
  • the line shading indicates the resource unit of the PDCCH mapping.
  • the resource unit corresponding to the central location of the resource unit other than the resource unit of the PDCCH mapping in the physical resource block pair is used as a start.
  • the number is sequentially arranged to the resource unit corresponding to the edge position, and the resource unit that encounters the DMRS mapping is skipped.
  • the location of the resource unit included in each of the 16 eREGs is determined, as shown in FIG. 6, wherein the horizontal line hatching indicates the resource unit of the DMRS mapping, and the shaded hatching indicates the resource unit of the PDCCH mapping.
  • Each small square represents a resource unit, and the number is 16 eREG numbers, which are used to represent each resource list.
  • the eREG to which the element belongs, the vertical direction represents the frequency domain resource, and the horizontal direction represents the time domain resource.
  • each eREG includes both a resource unit in the middle of the physical resource block pair and a resource unit in the edge of the physical resource block pair;
  • each eREG is approximately equal.
  • the centralized control channel transmission also uses eREG as the basic transmission unit, it can be ensured that the eCCE formed by each eREG combination also satisfies the above three rules.
  • the number of the eREG in each physical resource block pair may be a resource corresponding to a central location of each physical resource block pair.
  • the unit is used as the starting number, and is cyclically sequenced to the resource unit corresponding to the edge position.
  • each physical resource block pair is determined by determining an at least one physical resource block pair for transmitting a control channel, and further, according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level.
  • the resource units corresponding to the edge locations are cyclically arranged, and the control channel is mapped to the eREG corresponding to the determined eREG information according to the determined eREG information, so that the location of the eREG of the control channel is mapped.
  • the control information carried by the control channel is sent, so that control information of some control channels, such as ePDCCH bearers, is sent by the eREG in the physical resource block pair.
  • FIG. 7 is a schematic flowchart of a control channel transmission method according to another embodiment of the present application, as shown in FIG.
  • the eREG corresponding to the candidate eCCE corresponding to the Lk parse the control information carried by the control channel from the detected correct eREG, when detecting If it is incorrect, the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk in the k candidate aggregation levels continues to be detected.
  • execution body of 701 ⁇ 703 may be a terminal.
  • the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk in the k candidate aggregation levels is continuously detected until the detection is correct, or all the candidates are selected.
  • the eREG corresponding to the candidate eCCE corresponding to the aggregation level is detected.
  • the control channel may be an Enhanced Physical Downlink Control Channel (ePDCCH).
  • ePDCCH Enhanced Physical Downlink Control Channel
  • the determined eREG information may include an eREG number and an eREG identifier.
  • each physical resource block pair is optionally, in a possible implementation manner of this embodiment, the center of each physical resource block pair The location may be a central location of other resource elements other than the PDCCH mapped resource element in each of the physical resource block pairs.
  • the eREG in each physical resource block pair may be composed of at least one resource unit in each of the physical resource block pairs.
  • the eREG in each physical resource block pair may be included in the physical resource block pair except the reference signal and/or other control information.
  • the reference signal may include, but is not limited to, a Common Reference Signal (CRS), a DMRS, a Channel Status Information Reference Signal (CSI-RS), and a Positioning Reference Signal (PRS). at least one.
  • the number of the eREG in each physical resource block pair may be a resource corresponding to a central location of each physical resource block pair.
  • the unit is a starting number, and is spirally arranged in sequence to the resource unit corresponding to the edge position.
  • the number of the eREG in each physical resource block pair may be a resource corresponding to a central location of each physical resource block pair.
  • the unit is a starting number, and is cyclically arranged in sequence to the resource unit corresponding to the edge position.
  • each physical resource block pair is determined by determining at least one physical resource block pair for transmitting a control channel, and further, according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk.
  • the resource unit corresponding to the edge position is cyclically arranged; wherein, k is an integer, and Lk is any one of the k candidate aggregation levels, so that the eREG corresponding to the candidate eCCE corresponding to the Lk can be detected according to the determined eREG information.
  • the detection is correct, the control information carried by the control channel is parsed from the detected correct eREG, and when the detection is incorrect, candidate aggregations other than the Lk among the k candidate aggregation levels are detected.
  • the eREG corresponding to the candidate eCCE corresponding to the level continues to be detected, so that the eREG is received in the physical resource block pair.
  • EPDCCH channel such as control information bearer.
  • FIG. 8 is a schematic flowchart of a control channel transmission method according to another embodiment of the present application, as shown in FIG. 8.
  • execution body of 801 ⁇ 804 may be a base station.
  • the control channel may be an Enhanced Physical Downlink Control Channel (ePDCCH).
  • ePDCCH Enhanced Physical Downlink Control Channel
  • the determined eREG information may include an eREG number and an eREG identifier.
  • the first mapping rule and the second mapping rule may be the same, or may be different, which is not limited in this embodiment.
  • each physical resource block pair is determined by determining an at least one physical resource block pair for transmitting a control channel, and further, according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level.
  • the eREG information used to map the control channel where the eREG in each physical resource block pair is mapped to the first mapping area in each of the physical resource block pairs by using the first mapping rule, and
  • the second mapping rule is mapped to the eREG of the second mapping area in each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is configured by each of the physical resources.
  • the EG sends some control channels such as control information carried by the ePDCCH.
  • FIG. 9 is a schematic flowchart of a control channel transmission method according to another embodiment of the present application, as shown in FIG.
  • the 902. Determine, according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk, eREG information for mapping the control channel in each physical resource block pair, where each physical resource block is used.
  • the eREG of the pair is mapped to the using the first mapping rule a first mapping area of each physical resource block pair, and an eREG mapped to the second mapping area of each of the physical resource block pairs by using the second mapping rule, where the first mapping area is a resource unit that transmits data
  • the second mapping area is composed of resource elements mapped by the reference signal and/or other control channel of each physical resource block pair; wherein k is an integer and Lk is any one of k candidate aggregation levels.
  • the eREG corresponding to the candidate eCCE corresponding to the Lk is detected according to the determined eREG information, and when the detection is correct, the control information carried by the control channel is parsed from the detected correct eREG, when detecting If it is incorrect, the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk in the k candidate aggregation levels continues to be detected.
  • execution body of 901 ⁇ 903 may be a terminal.
  • the control channel may be an Enhanced Physical Downlink Control Channel (ePDCCH).
  • ePDCCH Enhanced Physical Downlink Control Channel
  • the determined eREG information may include an eREG number and an eREG identifier.
  • the first mapping rule and the second mapping rule may be the same, or may be different, which is not limited in this embodiment.
  • each physical resource block pair is determined by determining at least one physical resource block pair for transmitting a control channel, and further, according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk.
  • the eREG information used to map the control channel where the eREG in each physical resource block pair is mapped to the first mapping area in each of the physical resource block pairs by using the first mapping rule, and
  • the second mapping rule is mapped to the eREG of the second mapping area in each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is configured by each of the physical resources.
  • a resource unit composed of a block centering reference signal and/or other control channel mapping; wherein k is an integer and Lk is any one of k candidate aggregation levels, so that the Lk can be corresponding according to the determined eREG information.
  • the eREG corresponding to the candidate eCCE is detected, and when the detection is correct, the control information carried by the control channel is parsed from the detected correct eREG, when detecting If the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk in the k candidate aggregation levels is detected, the eREG is continuously received by the eREG in the physical resource block pair.
  • the channel is, for example, control information carried by the ePDCCH.
  • FIG. 10 is a schematic structural diagram of a base station according to another embodiment of the present disclosure.
  • the base station in this embodiment may include a determining unit 1001, a mapping unit 1002, and a sending unit 1003.
  • the determining unit 1001 is configured to determine at least one physical resource block pair for transmitting a control channel, and determine each physical resource block according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level.
  • the eREG information used to map the control channel, the number of the eREG in each physical resource block pair, and the resource unit corresponding to the central location of each physical resource block pair as a starting number, in sequence The resource unit corresponding to the edge position is cyclically arranged; the mapping unit 1002 is configured to map the control channel to the eREG corresponding to the determined eREG information according to the eREG information determined by the determining unit 1001; the sending unit 1003, And transmitting, by the mapping unit 1002, the control information carried by the control signal i at a position where the mapping unit 1002 maps the eREG of the control channel.
  • the control channel may specifically be an enhanced physical downlink control channel (Enhanced)
  • Enhanced enhanced physical downlink control channel
  • ePDCCH Physical Downlink Control Channel
  • the eREG information determined by the determining unit 1001 may include an eREG number and an eREG identifier.
  • each physical resource block pair is optionally, in a possible implementation manner of this embodiment, the center of each physical resource block pair The location may be a central location of other resource elements other than the PDCCH mapped resource element in each of the physical resource block pairs.
  • the eREG in each physical resource block pair may be composed of at least one resource unit in each of the physical resource block pairs.
  • the eREG in each physical resource block pair may be included in the physical resource block pair except the reference signal and/or other control information.
  • the reference signal may include, but is not limited to, a Common Reference Signal (CRS), a DMRS, a Channel Status Information Reference Signal (CSI-RS), and a Positioning Reference Signal (PRS). at least one.
  • the number of the eREG in each physical resource block pair may start with a resource unit corresponding to a central location of each physical resource block pair.
  • the number is spirally arranged in sequence to the resource unit corresponding to the edge position.
  • n is the eREG number of the eREG in each physical resource block pair, and the value ranges from 1 to N, where N is the number of eREGs in each physical resource block pair; x is the resource unit number, which is the value The range is an integer between 1 and M; then, according to 1 n T +1 n ⁇ +2 ni +2 n left +3 n down +3 n right +4 n on +4 +...
  • nx is one of n, n, n, and n left determined by k satisfying the above equation; and will satisfy the lower + right + 2 n + 2 n left + 3 n + 3 n right +4 n on +4.
  • the number of the eREG in each physical resource block pair may start with a resource unit corresponding to a central location of each physical resource block pair. The number is cyclically arranged in sequence to the resource unit corresponding to the edge position.
  • the resource block pair is used to map the eREG information of the control channel, and the number of the eREG in each of the physical resource block pairs is a starting number corresponding to a resource unit corresponding to a central location of each physical resource block pair.
  • the resource units corresponding to the edge positions are sequentially arranged, and the mapping unit is mapped to the eREG corresponding to the determined eREG information according to the eREG information determined by the determining unit, so that the sending unit can be located at the
  • the mapping unit maps the location of the eREG of the control channel, and sends control information carried by the control channel, so that control information for transmitting some control channels, such as ePDCCH, by the eREG in the physical resource block pair is implemented.
  • FIG. 11 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • the terminal in this embodiment may include a determining unit 1101 and a detecting unit 1102.
  • the determining unit 1 101 determines at least one physical resource block pair for transmitting a control channel, and determines each physical resource block according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk.
  • the resource unit corresponding to the edge position is cyclically arranged; wherein k is an integer and Lk is any one of k candidate aggregation levels; and detecting unit 1102 is configured to: according to the eREG information determined by the determining unit 1101, to the Lk
  • the eREG corresponding to the candidate eCCE is detected, and when the detection is correct, the control information carried by the control channel is parsed from the detected eREG, and when the detection is incorrect, the k candidate aggregation levels are excluded.
  • the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk continues to be detected.
  • the control channel may be an Enhanced Physical Downlink Control Channel (ePDCCH).
  • ePDCCH Enhanced Physical Downlink Control Channel
  • the eREG information determined by the determining unit 1101 may include an eREG number and an eREG identifier.
  • each physical resource block pair is optionally, in a possible implementation manner of this embodiment, the center of each physical resource block pair The location may be a resource unit of the PDCCH mapping in each of the physical resource block pairs The central location of other resource units outside.
  • the eREG in each physical resource block pair may be composed of at least one resource unit in each of the physical resource block pairs.
  • the eREG in each physical resource block pair may be included in the physical resource block pair except the reference signal and/or other control information.
  • the reference signal may include, but is not limited to, a Common Reference Signal (CRS), a DMRS, a Channel Status Information Reference Signal (CSI-RS), and a Positioning Reference Signal (PRS). at least one.
  • the number of the eREG in each physical resource block pair may start with a resource unit corresponding to a central location of each physical resource block pair.
  • the number is spirally arranged in sequence to the resource unit corresponding to the edge position.
  • n is the eREG number of the eREG in each physical resource block pair, and the value ranges from 1 to N, where N is the number of eREGs in each physical resource block pair;
  • nx x-1 , ⁇ position of the nth eREG
  • n, n right, n up, and n left represent the resource unit corresponding to the center position as a starting position, and the resource unit arrangement unit correspondingly to the edge position in a spiral counterclockwise or clockwise direction a resource unit
  • + k nx x- 1 or 1 n +1 n +2 n the right on the right +3 n +3 n +4 n
  • the number of the eREG in each physical resource block pair may start with a resource unit corresponding to a central location of each physical resource block pair.
  • the number is cyclically arranged in sequence to the resource unit corresponding to the edge position.
  • the terminal determines, by the determining unit, at least one physical resource block pair for transmitting the control channel, and further determines each physics according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk.
  • the resource block pair is used to map the eREG information of the control channel, and the number of the eREG in each of the physical resource block pairs is a starting number corresponding to a resource unit corresponding to a central location of each physical resource block pair.
  • the resource units corresponding to the edge positions are sequentially arranged in a loop; wherein k is an integer and Lk is any one of k candidate aggregation levels, so that the detecting unit can correspond to the Lk according to the eREG information determined by the determining unit.
  • the eREG corresponding to the candidate eCCE is detected, and when the detection is correct, the control information carried by the control channel is parsed from the detected correct eREG, and when the detection is incorrect, the k candidate aggregation levels are excluded.
  • the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than Lk continues to be detected, thereby realizing Some, for example, channel control information received ePDCCH carried by a physical resource block pair eREG.
  • FIG. 13 is a schematic structural diagram of a base station according to another embodiment of the present disclosure.
  • the base station in this embodiment may include a determining unit 1301, a mapping unit 1302, and a sending unit 1303.
  • the determining unit 1301 is configured to determine at least one physical resource block pair for transmitting a control channel, and determine each physical resource block according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level.
  • the eREG information used to map the control channel, the eREG in each physical resource block pair is mapped to the first mapping area in each of the physical resource block pairs by using the first mapping rule, and utilized
  • the second mapping rule is mapped to an eREG of the second mapping area of each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is used by each physical entity
  • the mapping unit 1302 is configured to map the control channel to the determined eREG information according to the eREG information determined by the determining unit 1301 a sending unit 1303, configured to send the control at a location where the mapping unit 1302 maps an eREG of the control channel Channel carries control information.
  • the control channel may specifically be an enhanced physical downlink control channel (Enhanced) Physical Downlink Control Channel, ePDCCH ).
  • Enhanced Physical Downlink Control Channel
  • the eREG information determined by the determining unit 1301 may include an eREG number and an eREG identifier.
  • the eREG information is used to map the eReG information of the control channel, and the eREG in each physical resource block pair is mapped to the first mapping area of each of the physical resource block pairs by using the first mapping rule.
  • mapping by the second mapping rule, to an eREG of the second mapping area in each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is configured by each And mapping, by the mapping unit, the resource unit of the reference signal and/or other control channel mapping, and the eREG information determined by the mapping unit according to the determining unit, mapping the control channel to the eREG corresponding to the determined eREG information Up, enabling the transmitting unit to send the control signal at a location where the mapping unit maps the eREG of the control channel
  • the control information carried by the channel so that the control information of some control channels, such as ePDCCH, is transmitted through the eREG in the physical resource block pair.
  • FIG. 14 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • the terminal in this embodiment may include a determining unit 1401 and a detecting unit 1402.
  • the determining unit 1401 is configured to determine at least one physical resource block pair for transmitting a control channel, and determine each physical resource according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk.
  • An eREG information for mapping the control channel where the eREG in each physical resource block pair is mapped to the first mapping area in each of the physical resource block pairs by using the first mapping rule, and Mapping to the eREG of the second mapping area in each of the physical resource block pairs by using the second mapping rule, where the first mapping area is composed of resource units that transmit data, and the second mapping area is formed by each
  • the physical resource block is configured by the resource unit of the reference signal and/or the other control channel mapping; wherein, k is an integer, and Lk is any one of k candidate aggregation levels; and the detecting unit 1402 is configured to determine, according to the determining unit 1401
  • the eREG information is used to detect the eREG corresponding to the candidate eCCE corresponding to the Lk, and when the detection is correct, the control is obtained by parsing the correct eREG from the detection Bearer control channel information, when the detection is incorrect, in addition to the levels of the other candidate Lk polymerization eC
  • the terminal determines, by the determining unit, at least one physical resource block pair for transmitting the control channel, and further determines each physics according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk.
  • the eREG information is used to map the eReG information of the control channel, and the eREG in each physical resource block pair is mapped to the first mapping area of each of the physical resource block pairs by using the first mapping rule.
  • mapping by the second mapping rule, to an eREG of the second mapping area in each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is configured by each Each of the physical resource block centering reference signals and/or other control channel mapped resource units; wherein k is an integer and Lk is any one of k candidate aggregation levels, such that the detecting unit can determine the eREG according to the determining unit
  • the information, the eREG corresponding to the candidate eCCE corresponding to the Lk is detected, and when the detection is correct, the correct eREG is detected from the
  • the control information carried by the control channel is analyzed, and when the detection is incorrect, the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk in the k candidate aggregation levels is continuously detected, thereby implementing
  • the control information of some control channels, such as ePDCCH bearers, is received by the eREG
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute the method of the various embodiments of the present application. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and the like, and the program code can be stored. Medium.

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

Abstract

La présente invention concerne un procédé de transmission pour un canal de commande, une station de base et un terminal. Selon un aspect des modes de réalisation de la présente invention, en déterminant au moins une paire de blocs de ressources physiques de transmission d'un canal de commande et en déterminant par la suite des informations d'eREG utilisées pour une mise en correspondance du canal de commande dans chaque paire de blocs de ressources physiques, conformément au niveau d'agrégation du canal de commande et de l'eREG correspondant à chaque eCCE qui correspond au niveau d'agrégation, les numéros d'ordre des eREG de chacune des paires de blocs de ressources physiques sont organisés cycliquement dans l'ordre en direction de l'élément de ressource qui correspond à la position de bord, l'élément de ressource correspondant à la position centrale de chacune des paires de blocs de ressources physiques servant de numéro d'ordre de début, et, conformément aux informations d'eREG déterminées, le canal de commande est mis en correspondance avec l'eREG correspondant aux informations d'eREG déterminées, de façon à permettre l'envoi des informations de commande véhiculées par le canal de commande à la position de l'eREG pour une mise en correspondance du canal de commande.
PCT/CN2012/079444 2012-07-31 2012-07-31 Procédé de transmission pour canal de commande, station de base et terminal WO2014019146A1 (fr)

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PCT/CN2012/079444 WO2014019146A1 (fr) 2012-07-31 2012-07-31 Procédé de transmission pour canal de commande, station de base et terminal

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CN102395206B (zh) * 2011-11-08 2015-07-15 电信科学技术研究院 下行控制信息的传输方法和设备
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CN102210181A (zh) * 2008-11-07 2011-10-05 株式会社Ntt都科摩 无线基站
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