WO2013166847A1 - 下行控制信息发送方法、检测方法、基站及用户设备 - Google Patents

下行控制信息发送方法、检测方法、基站及用户设备 Download PDF

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Publication number
WO2013166847A1
WO2013166847A1 PCT/CN2012/087515 CN2012087515W WO2013166847A1 WO 2013166847 A1 WO2013166847 A1 WO 2013166847A1 CN 2012087515 W CN2012087515 W CN 2012087515W WO 2013166847 A1 WO2013166847 A1 WO 2013166847A1
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WIPO (PCT)
Prior art keywords
aggregation level
resource block
block set
detected
control channel
Prior art date
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Ceased
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PCT/CN2012/087515
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English (en)
French (fr)
Inventor
戴博
陈艺戬
左志松
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ZTE Corp
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ZTE Corp
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Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to EP12876473.5A priority Critical patent/EP2854455B1/en
Priority to JP2015510609A priority patent/JP6320370B2/ja
Priority to EP19177397.7A priority patent/EP3609237B1/en
Priority to RU2014149857A priority patent/RU2630747C2/ru
Priority to HK15109176.0A priority patent/HK1208586B/zh
Priority to BR112014028088-6A priority patent/BR112014028088B1/pt
Priority to US14/400,008 priority patent/US9532351B2/en
Publication of WO2013166847A1 publication Critical patent/WO2013166847A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signalling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information

Definitions

  • the present invention relates to the field of communications, and in particular to a downlink control information transmitting method, a detecting method, a base station, and a user equipment.
  • Frame Structure Type 1 (Type 1) is applicable to Frequency Division Duplex (FDD) and Frequency Division Half-Duplex.
  • FDD Frequency Division Duplex
  • Each radio frame is 10ms long and consists of 20 slots, each slot is 0.5ms, numbered from 0 to 19.
  • FIG. 1 is a schematic diagram of a frame structure of an FDD mode. As shown in FIG. 1, one subframe is composed of two consecutive time slots, for example, subframe i is composed of two consecutive time slots 2i and 2i+1.
  • Frame Structure Type 2 (Type 2) is suitable for Time Division Duplex (TDD).
  • 2 is a schematic diagram of a frame structure of a TDD mode.
  • a radio frame has a length of 10 ms and is composed of two half-frames having a length of 5 ms.
  • One field consists of five sub-frames of length 1 ms.
  • the subframe is divided into a general subframe and a special subframe, wherein the special subframe is composed of a downlink pilot time slot (DwPTS), a guard interval (GP), and an uplink pilot time slot (UpPTS), and the total length is lms.
  • Each subframe i consists of two time slots 2i and 2i+1 that are 0.5 ms in length.
  • the downlink control signaling includes the DL Grant information related to the downlink transmission that the terminal needs to know, and the UL Grant information related to the uplink transmission that the UE needs to know.
  • the layer control signaling is transmitted on the physical layer control channel PDCCH.
  • the format of the DCI (DCI format) is divided into the following types: DCI format 0, DCI format 1, DCI format 1A, DCI format 1B, DCI format 1C, DCI Format 1D, DCI format 2, DCI format 2A, DCI format 2B, DCI format 2C, DCI format 3, and DCI format 3 A, etc.; DCI Format size increases as the system bandwidth increases.
  • the Physical Downlink Control Channel (PDCCH) for transmitting physical layer control signaling is generally configured in the first N OFDM systems. (Orthogonal Frequency Division Multiplexing) is transmitted on a symbol. Generally, these N symbols are called control signaling transmission areas.
  • the control signaling transmission area for the control signaling transmission area area newly added with the new version is referred to as the first control signaling transmission area in the present invention.
  • the available transmission resources of the first control signaling transmission area are divided into multiple CCE resource units, and the control information occupation resources are allocated in units of CCEs, where the resource unit CCEs can be further subdivided into multiple REGs, one CCE
  • a plurality of discontinuous REGs are generally composed of 9 REGs to form one CCE, and further each REG is composed of 4 basic resource units, and one basic resource unit carries one modulation symbol.
  • one CCE can carry 72 bits.
  • a PDCCH has four aggregation levels (Aggregation Level), and four aggregation levels respectively correspond to one PDCCH occupying 1, 2, 4 or 8 CCEs, which are called aggregation level 1, aggregation level 2, aggregation level 4, and aggregation level 8. That is, the four formats of the PDCCH are corresponding, that is, the aggregation level represents the physical resource size occupied by the physical downlink control channel. Each aggregation level corresponds to g candidate sets, that is, g locations where the PDCCH can be transmitted.
  • the user equipment may blindly detect the four aggregation levels on the corresponding candidate set positions of the aggregation levels of the first control signaling transmission area to determine whether the PDCCH has a transmission, thereby obtaining corresponding downlink control information.
  • the design considers to open up a new control channel region, and the control signaling transmission resources of the same UE may be continuous time-frequency resources. To support closed-loop precoding technology, the transmission performance of control information is improved.
  • the control signaling area of the new and old versions is as shown in FIG. 3.
  • the new version of the control signaling is used to divide the transmission resources in the original R8/9/10 PDSCH transmission area for the second control signaling transmission area, which may enable control.
  • the closed-loop precoding technology is supported during signaling transmission, and the control signaling capacity is increased to support more user control signaling.
  • the dedicated demodulation pilot (DMRS) in R10 can be reused to demodulate the control signaling, and the precoding technology is well supported.
  • the second control signaling transmission area is in units of RBs, and interference coordination can be performed better.
  • the DMRS may also support an open loop diversity technique such as SFBC technology, or an open loop precoding technique.
  • LTE A Resource Element (RE) is a subcarrier on one OFDM symbol, and one downlink physical resource block.
  • (Resource Block, RB) consists of 12 consecutive subcarriers and 14 consecutive OFDM symbols (12 when using extended cyclic prefix), 180 kHz in the frequency domain, and the length of time in a time slot is a general time slot, namely: Lms, as shown in Figure 4 (a 5M system;).
  • CCE In order to transmit downlink control information in the second control signaling transmission area, it is also necessary to redefine CCE, BP: eCCE, and the following definitions of CCE size are mainly defined as follows: One is still to maintain the definition of R8, SP: 36 resource units The other is one-nth of the resource unit included in one physical resource block.
  • a problem in the prior art is that the size of the second control signaling area is limited by the size of the first control signaling area, and other signals may be transmitted on the second control signaling area, such as: CRS, PSS/SSS, PBCH, PRS, CSI-RS, DM-RS, PRS, which will result in a decrease in the number of valid bits that can actually transmit downlink control information in the eCCE, resulting in an increase in the effective code rate of the ePDCCH, even if the code rate exceeds 1, causing downlink control. The information cannot be decoded correctly.
  • the present invention provides a downlink control information transmission method, a detection method, a base station, and a user equipment, to at least solve the problem of waste of detection resources of user equipment caused by the foregoing existing downlink control information transmission mode.
  • a downlink control information detection method including: a user equipment, according to a resource block set and predefined information configured by a base station, detecting downlink control information of an enhanced physical downlink control channel ePDCCH bearer on a resource block
  • the predefined information includes at least one of the following: subcarrier location information detected in the resource block set, enhanced control channel unit information detected in the resource block set, mapping mode of the ePDCCH, and aggregation level configuration detected in the resource block set; Information, the number of candidate sets corresponding to the aggregation level detected in the resource block set, and the downlink control information format.
  • the number of resource blocks in the resource block set is one of the following: 2, 4, 6, 8, 12, 16.
  • the user equipment selects 2 or 4 resource blocks as the detected resource block set.
  • the mapping mode of the ePDCCH includes a continuous mapping and/or a discrete mapping.
  • the downlink control information format is determined according to a transmission mode of the downlink control information corresponding data.
  • the ePDCCHs of the same aggregation level are configured in the same mapping mode.
  • all aggregation levels are sorted from small to large as follows: Nl, N2, ... Np, p is a positive integer, wherein the aggregation level Nl, N2...
  • the ePDCCH corresponding to the Nq is configured as a continuous mapping
  • the ePDCCH corresponding to the aggregation level N (q+1) Np is configured as a discrete mapping
  • q is a positive integer.
  • q is configured by the base station.
  • the user equipment detects different aggregation levels on the special subframe and the general subframe.
  • the user equipment determines the detection according to the configuration of the special subframe. A collection of aggregation levels.
  • the method for determining the aggregation level includes at least one of the following: Mode 1: The user equipment determines an aggregation level configuration to be detected according to an effective code rate of one eCCE transmission downlink control information in the detected eCCE; The maximum number of bits actually transmitted by one eCCE in the detected eCCE determines the aggregation level configuration to be detected; mode 3: the user equipment determines the aggregation level configuration to be detected according to the type of the detected downlink control information format; mode 4: configured by the base station The aggregation level detected by the user equipment.
  • the aggregation level detected by the user equipment is: aggregation level a, aggregation level a2, aggregation level a3, and aggregation level a4, and the number of candidate sets corresponding to each aggregation level are respectively cl, c2, c3, C4 , when the user equipment only When the aggregation level a2, the aggregation level a3, and the aggregation level a4, the number of candidate sets corresponding to each aggregation level is c2, c3, c4, or the number of candidate sets corresponding to each aggregation level is d2, d3, d4, where d2+d3 +d4 is less than or equal to cl+c2+c3+c4, and al, a2, a2, a4, cl, c2, c3, c4, d2, d2, and d4 are all positive integers.
  • the aggregation level detected by the user equipment is: aggregation level a, aggregation level a2, aggregation level a3, aggregation level a4, and the number of candidate sets corresponding to each aggregation level are respectively cl, c2, c3, C4 , wherein, cl, C2, c3, c4 are 6, 6, 2, 2, respectively, or 8, 4, 2, 2, or 4, 8, 2, 2, respectively, or 4, 4, 4, 4, or respectively For 4, 6, 4, 2.
  • the resource block set includes 4 resource blocks, 1 resource block includes 4 enhanced control channel units, and one enhanced control channel unit includes two resource groups, all resource group numbers are #0 to #31, and aggregation level a
  • the resource corresponding to the ePDCCH is a enhanced control channel unit.
  • the mapping mode is a discrete mapping
  • the detected subcarrier position information in the resource block set is at least one of the following: when the aggregation level is 1, the detected in the resource block set.
  • the subcarrier position information is «#0, #16), (#2, #18) ⁇ , ⁇ (#1 , #17), (#3 , #19) ⁇ , ⁇ (#4, #20), ( #6, #22) ⁇ , ⁇ (#5, #21), (#7, #23) ⁇ , ⁇ (#8, #24), (#10, #26) ⁇ , ⁇ (#9, # 25), (#11, #27) ⁇ , ⁇ (#12, #28), (#14, #30) ⁇ , ⁇ (#13 , #29), (#15, #31) ⁇ , ⁇ ( #0, #16), (#1, #17), (#2, #18), (#3, #19) ⁇ , ⁇ (#4, #20), (#5, #21), ( #6, #22), (#7, #23) ⁇ , ⁇ (#8, #24), (#9, #25), (#10, #26), (#11, #27) ⁇ , ⁇ (#12, #28), (#13, #29), (
  • the resource block set includes 2 resource blocks, and one resource block includes 4 enhanced control channel units.
  • the aggregation level a indicates that the resources corresponding to the ePDCCH are a enhancement.
  • the control channel unit, the enhanced control channel unit information detected in the resource block set is at least one of the following: when the mapping mode is continuous mapping and the aggregation level is 1, the enhanced control channel element information detected in the resource block set is #0 to # 7; or, when the mapping mode is continuous mapping and the aggregation level is 2, the enhanced control channel unit information detected in the resource block set is ⁇ #0, #1 ⁇ , ⁇ #2, #3 ⁇ , ⁇ #4, #5 ⁇ , ⁇ #6, #7 ⁇ ; or, when the mapping mode is continuous mapping and the aggregation level is 4, the enhanced control channel unit information detected in the resource block set is ⁇ #0, #1, #2, #3 ⁇ , ⁇ #4, #5, #6, #7 ⁇ ; or, when the mapping mode is discrete mapping and the aggregation level
  • the resource block set includes 4 resource blocks, and one resource block includes 4 enhanced control channel units.
  • the aggregation level a indicates that the resources corresponding to the ePDCCH are a enhancement.
  • the control channel unit, the enhanced control channel unit information detected in the resource block set is at least one of the following: when the mapping mode is continuous mapping and the aggregation level is 1, the enhanced control channel unit information detected in the resource block set is ⁇ #0, #2, #4, #6, #8, #10, #12, #14 ⁇ or ⁇ #1, #3, #5, #7, #9, #11, #13, #15 ⁇ ; or, When the mapping mode is continuous mapping and the aggregation level is 2, the enhanced control channel element information detected in the resource block set is ⁇ (#0, #1), (#4, #5), (#8, #9), (#12, #13) ⁇ or ⁇ (#2, #3), (#6, #7), (#10, #11), (#14, #15) ⁇ ; Or, when the mapping mode is continuous mapping and the aggregation level is
  • the resource partitioning methods in different groups are different according to the frequency domain subcarrier grouping.
  • different cyclic prefixes correspond to different aggregation levels, or different cyclic prefixes correspond to different candidate set numbers.
  • a user equipment including: a receiving module, configured to receive a resource block set and predefined information configured by a base station, where the predefined information includes at least one of the following: a detected sub-in the resource block set Carrier position information, enhanced control channel element information detected in the resource block set, mapping mode of the ePDCCH, aggregation level configuration information detected in the resource block set, number of candidate sets corresponding to the aggregation level detected in the resource block set, and downlink
  • the control information format is configured to: detect, according to the resource block set and the predefined information, downlink control information of the enhanced physical downlink control channel ePDCCH bearer on the resource block.
  • the number of resource blocks in the resource block set is the following One: 2, 4, 6, 8, 12, 16
  • the user equipment selects 2 or 4 resource blocks as the detected resource block set.
  • the user equipment is in the special subframe and the general subframe. Detecting different aggregation levels on the fish
  • the user equipment determines the detected aggregation level set according to the configuration of the special subframe.
  • the method for determining the aggregation level includes at least one of the following: Mode 1: The user equipment determines an aggregation level configuration to be detected according to an effective code rate of one eCCE transmission downlink control information in the detected eCCE; The maximum number of bits actually transmitted by one eCCE in the detected eCCE determines the aggregation level configuration to be detected; mode 3: the user equipment determines the aggregation level configuration to be detected according to the type of the detected downlink control information format; mode 4: configured by the base station The aggregation level detected by the user equipment.
  • the aggregation level detected by the user equipment is: aggregation level a, aggregation level a2, aggregation level a3, and aggregation level a4, and the number of candidate sets corresponding to each aggregation level are respectively cl, c2, c3, C4 , when the user equipment only When the aggregation level a2, the aggregation level a3, and the aggregation level a4, the number of candidate sets corresponding to each aggregation level is c2, c3, c4, or the number of candidate sets corresponding to each aggregation level is d2, d3, d4, where d2+d3 +d4 is less than or equal to cl+c2+c3+c4, and al, a2, a2, a4, cl, c2, c3, c4, d2, d2, and d4 are all positive integers.
  • the aggregation level detected by the user equipment is: aggregation level a, aggregation level a2, aggregation level a3, aggregation level a4, and the number of candidate sets corresponding to each aggregation level are respectively cl, c2, c3, C4 , wherein, cl, C2, c3, c4 are 6, 6, 2, 2, respectively, or 8, 4, 2, 2, or 4, 8, 2, 2, respectively, or 4, 4, 4, 4, or respectively For 4, 6, 4, 2.
  • the resource block set includes 4 resource blocks, 1 resource block includes 4 enhanced control channel units, and one enhanced control channel unit includes two resource groups, all resource group numbers are #0 to #31, and aggregation level a
  • the resource corresponding to the ePDCCH is a enhanced control channel unit.
  • the mapping mode is a discrete mapping
  • the detected subcarrier position information in the resource block set is at least one of the following: when the aggregation level is 1, the detected in the resource block set.
  • the subcarrier position information is «#0, #16), (#2, #18) ⁇ , ⁇ (#1 , #17), (#3 , #19) ⁇ , ⁇ (#4, #20), ( #6, #22) ⁇ , ⁇ (#5 , #21), (#7, #23) ⁇ , ⁇ (#8, #24), (#10, #26) ⁇ , ⁇ (#9, # 25), (#11, #27) ⁇ , ⁇ (#12, #28), (#14, #30) ⁇ , ⁇ (#13 , #29), (#15, #31) ⁇ , ⁇ ( #0, #16), (#1, #17), (#2, #18), (#3, #19) ⁇ , ⁇ (#4, #20), (#5 , #21), ( #6, #22), (#7, #23) ⁇ , ⁇ (#8, #24), (#9, #25), (#10, #26), (#11, #27) ⁇ , ⁇ (#12, #28), (#13,
  • the resource block set includes 2 resource blocks, and one resource block includes 4 enhanced control channel units.
  • the aggregation level a indicates that the resources corresponding to the ePDCCH are a enhancement.
  • the control channel unit, the enhanced control channel unit information detected in the resource block set is at least one of the following: when the mapping mode is continuous mapping and the aggregation level is 1, the enhanced control channel element information detected in the resource block set is #0 to # 7; or, when the mapping mode is continuous mapping and the aggregation level is 2, the enhanced control channel unit information detected in the resource block set is ⁇ #0, #1 ⁇ , ⁇ #2, #3 ⁇ , ⁇ #4, #5 ⁇ , ⁇ #6, #7 ⁇ ; or, when the mapping mode is continuous mapping and the aggregation level is 4, the enhanced control channel unit information detected in the resource block set is ⁇ #0, #1, #2, #3 ⁇ , ⁇ #4, #5, #6, #7 ⁇ ; or, when the mapping mode is discrete mapping and the aggregation level
  • the resource block set includes 4 resource blocks, and one resource block includes 4 enhanced control channel units.
  • the aggregation level a indicates that the resources corresponding to the ePDCCH are a enhancement.
  • the control channel unit, the enhanced control channel unit information detected in the resource block set is at least one of the following: when the mapping mode is continuous mapping and the aggregation level is 1, the enhanced control channel unit information detected in the resource block set is ⁇ #0, #2, #4, #6, #8, #10, #12, #14 ⁇ or ⁇ #1, #3, #5, #7, #9, #11, #13, #15 ⁇ ; or, When the mapping mode is continuous mapping and the aggregation level is 2, the enhanced control channel element information detected in the resource block set is ⁇ (#0, #1), (#4, #5), (#8, #9), (#12, #13) ⁇ or ⁇ (#2, #3), (#6, #7), (#10, #11), (#14, #15) ⁇ ; or, when the mapping mode
  • a downlink control includes: sending, by the base station, a configured resource block set and predefined information to the user equipment, to The user equipment detects downlink control information of the enhanced physical downlink control channel ePDCCH bearer on the resource block, where the predefined information includes at least one of the following: the detected subcarrier position information in the resource block set, and the enhanced control detected in the resource block set.
  • the number of resource blocks is one of the following: 2, 4, 6, 8, 12, 16.
  • different cyclic prefixes correspond to different aggregation levels, or different cyclic prefixes correspond to different number of candidate sets.
  • a base station including: a configuration module, configured to configure a resource block set and predefined information, where the predefined information includes at least one of the following: the detected subcarrier position information in the resource block set, and the resource block set Detected enhanced control channel element information, mapping mode of ePDCCH, The aggregation level configuration information detected in the resource block set, the number of candidate sets corresponding to the aggregation level detected in the resource block set, and the downlink control information format; the sending module is configured to send the resource block set and the predefined information to the user equipment, Downlink control information indicating that the user equipment detects the enhanced physical downlink control channel ePDCCH bearer on the resource block.
  • the predefined information includes at least one of the following: the detected subcarrier position information in the resource block set, and the resource block set Detected enhanced control channel element information, mapping mode of ePDCCH, The aggregation level configuration information detected in the resource block set, the number of candidate sets corresponding to the aggregation level detected in the resource block set
  • the number of resource blocks in the resource block set is one of the following: 2, 4, 6, 8, 12, 16.
  • different cyclic prefixes correspond to different aggregation levels, or different cyclic prefixes correspond to different candidate set numbers.
  • the resource block set and the predefined information configured by the base station are used to flexibly instruct the user equipment to detect the downlink control information of the ePDCCH bearer on the corresponding physical resource block, thereby saving the user equipment to detect the resources of the search space, and improving the system. Scheduling efficiency.
  • FIG. 1 is a schematic diagram of a frame structure of an FDD mode according to the related art
  • FIG. 2 is a schematic diagram of a frame structure of a TDD mode according to the related art
  • FIG. 3 is a schematic diagram of a distribution of new and old version control signaling regions according to the related art
  • 4 is a resource block diagram of LTE-A according to the related art
  • FIG. 5 is a flowchart of a method for detecting downlink control information according to an embodiment of the present invention
  • FIG. 6 is a block diagram of a structure of a user equipment according to an embodiment of the present invention
  • FIG. 8 is a block diagram showing a structure of a base station according to an embodiment of the present invention
  • FIG. 9-10 is a schematic diagram of a sub-carrier corresponding to a resource group when the aggregation level is 1 according to the embodiment of the present invention
  • FIG. 11 is a schematic diagram of a resource group corresponding subcarrier when the aggregation level is 2 according to the embodiment of the present invention
  • FIG. 14 is a schematic diagram of a search space of a PRB set-based ePDCCH continuous mapping according to the first embodiment of the present invention;
  • FIG. 16 is a PRB set based on a first embodiment of the present invention.
  • a schematic diagram of the L (continuous mapping) search space for configuring signaling; 17-18 are schematic diagrams of a D-search space (based on eCCE discretization) based on PRB set and configuration signaling according to Embodiment 1 of the present invention;
  • FIG. 19-20 is a PRB set and configuration signaling according to Embodiment 1 of the present invention;
  • FIG. 21 is a schematic diagram of dividing one resource block into four eCCEs according to the first embodiment of the present invention
  • FIG. 22 is a resource block divided into eight according to the first embodiment of the present invention.
  • the method includes the following steps: The enhanced control channel element information detected in the ePDCCH, the mapping mode of the ePDCCH, the aggregation level configuration information detected in the resource block set, the number of candidate sets corresponding to the aggregation level detected in the resource block set, and the downlink control information format; Step S504, The user equipment detects downlink control information of the enhanced physical downlink control channel ePDCCH bearer on the resource block according to the resource block set and the predefined information.
  • the resource block set and the predefined information configured by the base station are used to flexibly instruct the user equipment to detect the downlink control information of the ePDCCH bearer on the corresponding physical resource block, thereby saving the user equipment to detect the resource of the search space, and improving the resource.
  • System scheduling efficiency In the foregoing embodiment, the number of resource blocks included in the resource block set may be two, four, or six.
  • location information in the resource block set includes subcarrier position information in the resource block set; ePDCCH mapping mode includes continuous mapping, discrete mapping; candidate set configuration includes user-specific The number of candidate sets corresponding to the aggregation level in the search space; the aggregation level configuration information includes configuration information of the aggregation level in the user-specific search space.
  • the user equipment determines the aggregation level configuration to be detected according to the number of valid resource units included in one eCCE in the detected eCCE and/or the format of the detected downlink control information.
  • the aggregation level configuration includes configuration 1 and/or configuration 2, where configuration 1 is: (aggregation level a, aggregation level a2, aggregation level a3, aggregation level a4), Wherein, al, a2, a3, a4 are 1, 2, 4, 8 respectively; configuration 2 is: (polymerization grade bl, polymerization grade b2, polymerization grade b3, polymerization grade b4) or (aggregation grade a2, polymerization grade a3, Aggregation level a4), where bl, b2, b3, b4 are 2, 4, 8, 16, or 2, 4, 8, 12 respectively.
  • the user equipment determines the aggregation level configuration to be detected according to the number of valid resource units included in one eCCE and/or the detected downlink control information format in the detected eCCE, including the following manner:
  • the user equipment transmits according to one eCCE in the detected eCCE.
  • the effective code rate of the downlink control information determines the aggregation level configuration to be detected. When the effective code rate is greater than X, configuration 2 is adopted. When the effective code rate is less than or equal to X, configuration 1 is adopted; X is 0.93 or 1.
  • the aggregation level to be detected is configuration 1
  • the maximum bit of an eCCE actually transmitted by the eCCE detected by the user equipment is configuration 2.
  • the aggregation level to be detected is configuration 1.
  • the aggregation level to be detected is configuration 2.
  • the user equipment includes: a receiving module 10, configured to receive a resource block set and predefined information configured by a base station, where the predefined information includes at least one of the following: the detected subcarrier position information in the resource block set. And the enhanced control channel unit information detected in the resource block set, the mapping mode of the ePDCCH, the aggregation level configuration information detected in the resource block set, the number of candidate sets corresponding to the aggregation level detected in the resource block set, and the downlink control information format
  • the detecting module 20 is configured to detect downlink control information of the enhanced physical downlink control channel ePDCCH bearer on the resource block according to the resource block set and the predefined information.
  • FIG. 7 is a flowchart of a method for transmitting downlink control information according to an embodiment of the present invention. As shown in FIG. 7, the method includes the following steps: Step S702: The base station configures a resource block set and predefined information, where the predefined information includes at least one of the following: the detected subcarrier position information in the resource block set, and the detected in the resource block set.
  • Step S704 The base station sends the resource block to the user equipment.
  • the set and the predefined information are used to indicate that the user equipment detects the downlink control information of the enhanced physical downlink control channel ePDCCH bearer on the resource block.
  • FIG. 8 is a structural block diagram of a base station according to an embodiment of the present invention.
  • the base station includes: a configuration module 30, configured to configure a resource block set and predefined information, where the predefined information includes at least one of the following: a subcarrier position information detected in the resource block set, and a resource block set.
  • the resource block set and the predefined information configured by the base station are used to flexibly instruct the user equipment to detect the downlink control information of the ePDCCH bearer on the corresponding physical resource block, thereby saving the user equipment to detect the resource of the search space, and improving the resource.
  • Embodiment 1 The embodiment of the present invention describes a method for detecting downlink control information in detail, and the specific implementation flow will be described in detail below with reference to the accompanying drawings.
  • the user equipment detects downlink control information carried by the enhanced physical downlink control channel (ePDCCH) on the resource block according to the resource block set and the predefined information configured by the base station; where the predefined information includes one or a combination of the following information: The subcarrier position information detected in the set, the enhanced control channel unit information detected in the resource block set, the mapping mode of the ePDCCH, the aggregation level configuration information detected in the resource block set, and the aggregation level detected in the resource block set The number of candidate sets and the format of the downlink control information.
  • ePDCCH enhanced physical downlink control channel
  • the resource block set may include two, four, six, eight, twelve, sixteen, and thirty, but not limited to the foregoing values; the resource block set includes the number of resource blocks that are greater than At 4 o'clock, the user equipment selects 2 or 4 resource blocks as the detected resource block set.
  • the specific selection method is as follows: The user equipment may select 2 or 4 resource blocks from the resource block set as the detected resource block set according to the UE-specific configuration; 2 or 4 resource blocks selected from the resource block set in each subframe may be the same or different;
  • the UE-specific configuration may be an equally spaced selection of resource blocks, each UE configuring a proprietary starting location.
  • the mapping mode of the ePDCCH includes a continuous mapping and a discrete mapping.
  • the downlink control information format is determined according to a transmission mode of the downlink control information corresponding data.
  • the aggregation level a indicates that the resource corresponding to the ePDCCH is a enhanced control channel unit, and the same aggregation level is used.
  • the ePDCCH can be configured as only one mapping mode.
  • all aggregation levels are sorted from small to large: Nl, N2, Np, p is a positive integer, where, the aggregation The ePDCCH corresponding to the level N1, N2, ..., Nq is configured as a continuous mapping, and the ePDCCH corresponding to the aggregation level N (q+1) Np is configured as a discrete mapping, and q is a positive integer; Configured by the base station.
  • the specific application is as follows:
  • the aggregation level is 1, 2, 4, 8, where q can be 1, 2, 4, 8, or 1, 2, 4, or, 2, 4, 8, or 2 , 4, or 1, 1, or, 2, or, 4, or, 8; when q is 2, Bay U, 1, 2 is a continuous map, 4, 8 is a discrete map, when q is 4, 1, 2, 4 is a continuous mapping, and 8 is a discrete mapping.
  • Different cyclic prefix types (regular cyclic prefix, extended cyclic prefix) define different aggregation levels.
  • the regular cyclic prefix and the extended cyclic prefix define different eCCE sizes
  • the regular cyclic prefix is 2, 4, 8, 16, and the extended cyclic prefix is 1, 2, 4, 8; or, the regular cyclic prefix is 2 , 4, 8, extended cyclic prefix is 1, 2, 4, 8.
  • the user equipment detects different aggregation level sets on special subframes and general subframes, for example: Application 1: The detection level on the general subframe is 1, 2, 4, 8, and the detection level on the special subframe. For 2, 4, 8, 16. Specific application 2: The detection level on the normal subframe is 2, 4, 8, and the detection level is 4, 8, on the special subframe.
  • the detection level on the normal subframe is 1, 2, 4, 8, and the detection level is 4, 8, on the special subframe.
  • Specific application 4 The detection level on the general subframe is 4, 8, 16, and the detection level on the special subframe is 8, 16, 32; the aggregation level of the special subframe can be configured or fixed.
  • the user equipment determines the detected aggregation level set according to the configuration of the special subframe.
  • the manner in which the user equipment determines to detect the aggregation level includes at least one of the following: Mode 1: The user equipment determines the aggregation level configuration to be detected according to the effective code rate of one eCCE transmission downlink control information in the detected eCCE.
  • Manner 2 The user equipment determines the aggregation level configuration to be detected according to the maximum number of bits actually transmitted by one eCCE in the detected eCCE.
  • Mode 3 When the user equipment detects the downlink control information format Y, the aggregation level to be detected is configuration 1; when the user equipment detects the downlink control information format Z, the aggregation level to be detected is configuration 2.
  • Manner 4 The base station configures the aggregation level detected by the user equipment.
  • the specific application is as follows:
  • the aggregation level that the user equipment needs to detect is: configuration 1 (aggregation level a, aggregation level a2, aggregation level a3, aggregation level a4), configuration 2 (aggregation level bl, aggregation level b2, aggregation level b3, aggregation level) B4); or, configuration 1 (aggregation level a, aggregation level a2, aggregation level a3, aggregation level a4), configuration 2 (aggregation level a2, aggregation level a3, aggregation level a4).
  • Al , a2, a3 , a4 may be 1, 2, 4, 8, for example only, not limited to this value; bl, b2, b3, b4 may be 2, 4, 8, 16, or 2, 4, 8, 12, is only an example, not limited to this value.
  • the user equipment determines, according to the number of valid resource units included in one eCCE and the detected downlink control information format (the number of bits included in the downlink control information), the user equipment determines the aggregation level configuration to be detected; specifically: the following manner: The user equipment determines the aggregation level configuration to be detected according to the effective code rate of the eCCE transmission downlink control information in the detected eCCE, that is, when the effective code rate is greater than X, the configuration 2 is adopted, when the effective code rate is less than or equal to For X, configuration 1 is used; X can be 0.93 or 1, not limited to this value.
  • Mode 2 The user equipment determines the aggregation level configuration to be detected according to the maximum number of bits actually transmitted by one eCCE in the detected eCCE, that is, the maximum number of bits actually transmitted by the eCCE is smaller than the downlink control.
  • the aggregation level to be detected is configuration 1.
  • the maximum number of bits actually transmitted by the eCCE is greater than the number of bits included in the downlink control information, the aggregation level to be detected is configuration 2.
  • Mode 3 When the user equipment detects the downlink control information format Y, the aggregation level to be detected is configuration 1; when the user equipment detects the downlink control information format Z, the aggregation level to be detected is configuration 2; Y may be 0, 1A, Z can be 2C, 4; not limited to the above values.
  • Manner 4 The base station sends signaling indicating the aggregation level to be detected by the user equipment.
  • the aggregation level that the user equipment needs to detect is: aggregation level a, aggregation level a2, aggregation level a3, aggregation level a4, and the number of candidate sets corresponding to each aggregation level is cl, c2, c3, C4 , ij, when the user The device only detects the aggregation level a2, the aggregation level a3, and the aggregation level a4, the number of candidate sets corresponding to each aggregation level is c2, c3, c4, or the number of candidate sets corresponding to each aggregation level is d2, d3, d4, where D2+d3+d4 is less than or equal to cl+c2+c3+c4 ; the specific application is as follows: cl, c2, c3, c4 are 6,6,2,2, or 8,4,2,2, or, 4, respectively.
  • 8,2,2, bei lj, d2, d3 , d4 are 8,4,4, or 8,4,2, or, 12,2,2, or 8,6,2, etc.; al, a2 , a3, a4 can be 1, 2, 4, 8, for example only, not limited to the value;
  • the aggregation level detected by the user equipment is: aggregation level a, aggregation level a2, aggregation level a3, aggregation level a4, each aggregation
  • the number of candidate sets corresponding to the level is cl, c2, c3, c4, shell lj, cl, c2, c3, c4 are 6, 6, 2, 2, or 8, 4, 2, 2, or, 4, 8, respectively. , 2, 2, Who 4,4,4,4, or 4,6,4,2.
  • the aggregation level detected by the user equipment is: aggregation level a, aggregation level a2, aggregation level a3, aggregation level a4, and the number of candidate sets corresponding to each aggregation level is cl, c2 , c3 , C 4, Bay ij, regular cyclic prefix, cl, c2, c3, c4 is 4, 8, 2, 2, extension : ring prefix c2, c3, c4 is 4 or, often: ring prefix, cl, c2 , c3, c4 is 4 6, 4, extended loop ⁇ 1 c2, c3 c4 is 6 6,
  • the eCCE corresponding to the continuously mapped ePDCCH is referred to as L-eCCE mapping on one resource block
  • the eCCE corresponding to the discretely mapped ePDCCH is referred to as D-eCCE mapping on multiple resource blocks.
  • the resource block set includes 4 resource blocks
  • 1 resource block includes 4 enhanced control channel units
  • 1 enhanced control channel unit includes 2 resource groups.
  • aggregation level a Indicates that the resource corresponding to the ePDCCH is a enhanced control channel unit
  • the mapping mode is a discrete mapping
  • the detected subcarrier position information in the resource block set is at least one of the following: As shown in FIG. 9 and FIG. When the aggregation level is 1, the subcarrier position information detected in the resource block set is «#0,
  • the subcarrier position information detected in the resource block set is «#0, #1, #16, #17), (#2, #3, #18, #19) ⁇ , ⁇ (#4, #5, #20, #21), (#6, #7, #22, #23) ⁇ , ⁇ (#8, #9, #24, #25), (#10, #11, #26, #27) ⁇ , ⁇ (#12, #13, #28, #29), (#14, #15, #30, #31) ⁇ , ⁇ (#0, #8, #16, #24), ((#2, #10, #18, #26)) ⁇ , ⁇ (#1, #9, #17, #25), ((#3, #11, #19, #27)) ⁇ , ⁇ (#4, #12, #20, #28), ((#6, #14, #22, #30)) ⁇ , ⁇ (#5, #13, # 21, #29), ((#7, #15, #23, #31)) ⁇
  • One or a combination of resource groups corresponds to subcarriers.
  • the resource block set includes 2 resource blocks, and one resource block includes 4 enhanced control channel units.
  • the aggregation level a indicates that the resources corresponding to the ePDCCH are a enhanced control channel unit.
  • the shell 1" the enhanced control channel unit information detected in the resource block set is at least one of the following: When the mapping mode is continuous mapping and the aggregation level is 1, the enhanced control channel unit information detected in the resource block set is #0 to #7. When the mapping mode is continuous mapping and the aggregation level is 2, the enhanced control channel element information detected in the resource block set is ⁇ #0, #1 ⁇ , ⁇ #2, #3 ⁇ , ⁇ #4, #5 ⁇ , ⁇ # 6, #7 ⁇ .
  • the enhanced control channel element information detected in the resource block set is ⁇ #0, #1, #2, #3 ⁇ , ⁇ #4, #5, #6, #7 ⁇ .
  • the mapping mode is discrete mapping and the aggregation level is 2
  • the enhanced control channel unit information detected in the resource block set is ⁇ #0, #4 ⁇ , ⁇ #1, #5 ⁇ , ⁇ #2, #6 ⁇ , ⁇ # 3, #7 ⁇ .
  • the mapping mode is discrete mapping and the aggregation level is 4
  • the enhanced control channel element information detected in the resource block set is ⁇ #0, #2, #4, #6 ⁇ , ⁇ # ⁇ , #3, #5, #7 ⁇ .
  • the resource block set includes 2 resource blocks, and one resource block includes 4 enhanced control channel units.
  • the aggregation level a indicates that the resources corresponding to the ePDCCH are a enhanced control channel unit.
  • the enhanced control channel unit information detected in the resource block set is at least one of the following: when the mapping mode is continuous mapping and the aggregation level is 1, the enhanced control channel element information detected in the resource block set is # 0 to #7.
  • the mapping mode is continuous mapping and the aggregation level is 2
  • the enhanced control channel unit information detected in the resource block set is ⁇ #0, #1 ⁇ , ⁇ #2, #3 ⁇ , ⁇ #4, #5 ⁇ , ⁇ # 6, #7 ⁇ .
  • the enhanced control channel element information detected in the resource block set is ⁇ #0, #1, #2, #3 ⁇ , ⁇ #4, #5, #6, #7 ⁇ .
  • the mapping mode is discrete mapping and the aggregation level is 2
  • the enhanced control channel unit information detected in the resource block set is ⁇ #0, #4 ⁇ , ⁇ #1, #5 ⁇ , ⁇ #2, #6 ⁇ , ⁇ # 3, #7 ⁇ .
  • the mapping mode is discrete mapping and the aggregation level is 4
  • the enhanced control channel element information detected in the resource block set is ⁇ #0, #2, #4, #6 ⁇ , ⁇ #1, #3, #5, #7 ⁇ .
  • the specific search space is defined as follows:
  • the search space is defined in units of PRBs, and different UEs are detected by the same predetermined combination on the same PRB, for example:
  • the search space of the UE is defined by 2 PRBs (determined according to the PRB set).
  • 14 candidate sets as shown in Fig. 14 are defined, which are represented by L1 to L14; for discrete mapping, 7 candidate sets as shown in Fig. 15 can also be defined, which are represented by D9 to D15.
  • the resource block set includes 4 resource blocks, and one resource block includes 4 enhanced control channel units. For all enhanced control channel unit numbers #0 to #15, the aggregation level a indicates that the resources corresponding to the ePDCCH are a enhanced control channel unit.
  • the enhanced control channel unit information detected in the resource block set is at least one of the following: when the mapping mode is continuous mapping and the aggregation level is 1, the enhanced control channel unit information detected in the resource block set is ⁇ #0, #2 , #4, #6, #8, #10, #12, #14 ⁇ , or, ⁇ #1, #3, #5, #7, #9, #11, #13, #15 ⁇ .
  • the enhanced control channel element information detected in the resource block set is ⁇ (#0, #1 ), (#4, #5 ), (#8, #9), ( #12, #13 ) ⁇ , or, ⁇ (#2, #3 ), (#6, #7), (#10, #11 ), (#14, #15 ) ⁇ .
  • the mapping mode is continuous mapping and the aggregation level is 4
  • the enhanced control channel element information detected in the resource block set is ⁇ (#0, #1, #2, #3), (#8, #9, #10, # 11) ⁇ , or, ⁇ (#4, #5, #6, #7), (#12, #13, #14, #15.
  • the detected enhanced control channel element information is ⁇ ( #0, #8, ( #2, #10), ( #4, #12), (#6, #14) ⁇ , or, ⁇ ( #1 , #9 ), ( #3 , #11 ), (#5 , #13 ), (#7, #15 ) ⁇ .
  • the mapping mode is discrete mapping and the aggregation level is 4, the enhanced control channel element information detected in the resource block set For ⁇ (#0, #4, #8, #12), (#2, #6, #10, #14) ⁇ , or, ⁇ (#1 , #5, #9, #13), (# 3, #7, #11, #15) ⁇ .
  • the enhanced control channel element information detected in the resource block set is ⁇ (#0, #2, #4, #6 , #8, #10, #12, #14),( #1, #3, #5, #7, #8, #9, #11, #13) ⁇ .
  • the search space in units of PRB, different The UEs can be detected according to different predetermined combinations on the same PRB; and, the aggregation level 1 and the aggregation Level 2 corresponds to different resources in order to reduce the probability of blocking at different aggregation levels (determined according to PRB set and pattern Index).
  • each configuration 14 candidate sets It is represented by L1 to L14.
  • two configurations as shown in Figures 17 and 18 can also be defined, each of which has 8 candidate sets, represented by D9 to D15; or, as shown in Figures 19 and 20
  • Each of the 16 candidate sets is configured by D1 to D16.
  • the resources are divided into one (2) resource units, as follows: 1 resource block is divided into 4 eCCEs. As shown in FIG. 21; different sequence numbers represent different eCCEs; according to frequency domain subcarrier grouping, different groups correspond to different resource divisions;
  • One resource block is divided into eight eREGs (Enhanced Resource Groups), and the resource blocks are divided into three groups in units of four subcarriers.
  • the relative positions of the same eREG numbers in different groups are different, as shown in FIG.
  • the serial numbers represent different eREGs;
  • software is also provided for performing the technical solutions described in the above embodiments.
  • a storage medium is also provided, the software being stored, including but not limited to an optical disk, a floppy disk, a hard disk, a rewritable memory, and the like.
  • the resource block set and the predefined information configured by the base station are used to flexibly indicate that the user equipment detects the downlink control information of the ePDCCH bearer on the corresponding physical resource block, thereby saving the user equipment from detecting the search space.
  • Resources improve the scheduling efficiency of the system.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.

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Abstract

本发明提供了一种下行控制信息发送方法、检测方法、基站及用户设备,该检测方法包括:用户设备根据基站配置的资源块集合和预定义信息,在资源块上检测 ePDCCH承载的下行控制信息;其中,预定义信息至少包括以下之一:资源块集合中检测的子载波位置信息、资源块集合中检测的增强控制信道单元信息、ePDCCH的映射模式、在资源块集合中检测的聚合等级配置信息、在资源块集合中所检测的聚合等级对应的候选集数量和下行控制信息格式。在本发明中,通过配置的资源块集合和预定义信息来灵活指示用户设备在相应的物理资源块上检测ePDCCH承载的下行控制信息,从而可以节省用户设备检测搜索空间的资源,提高了系统的调度效率。

Description

下行控制信息发送方法、 检测方法、 基站及用户设备 技术领域 本发明涉及通信领域, 具体而言, 涉及一种下行控制信息发送方法、 检测方法、 基站及用户设备。 背景技术 长期演进(Long Term Evolution, LTE)系统中有两种帧结构, 帧结构类型 1 ( Type 1 ) 适用于频分全双工 (Frequency Division Duplex, FDD) 和频分半双工。 每个无线 帧长为 10ms, 由 20个时隙(slot)组成,每个时隙 0.5ms,编号从 0到 19。图 1是 FDD 模式的帧结构示意图, 如图 1 所示, 一个子帧 (subframe) 由两个连续的时隙组成, 如子帧 i由两个连续的时隙 2i和 2i+l组成。 帧结构类型 2 ( Type 2) 适用于时分双工 (TDD, Time Division Duplex)。 图 2是 TDD模式的帧结构示意图, 如图 2所示, 一个无线帧长度为 10ms, 由两个长度为 5ms 的半帧(half-frame)组成。 一个半帧由 5个长度为 1ms子帧组成。 子帧分为一般子帧 和特殊子帧, 其中, 特殊子帧由下行导频时隙 (DwPTS)、 保护间隔 (GP) 以及上行 导频时隙 (UpPTS ) 组成, 总长度为 lms。 每个子帧 i由两个长度为 0.5ms的时隙 2i 和 2i+l组成。 在长期演进系统及 LTE-Adavance 系统中下行控制信令 (Downlink Control Information, DCI) 包含了终端需要获知的下行传输相关的 DL Grant信息和 UE需要 获知的上行传输相关的 UL Grant 信息等, 这些物理层控制信令在物理层控制信道 PDCCH上进行传输, 其中, DCI的格式 (DCI format) 分为以下几种: DCI format 0、 DCI format 1、DCI format 1A、DCI format 1B、DCI format 1C、DCI format 1D、DCI format 2、 DCI format 2A、 DCI format 2B、 DCI format 2C、 DCI format 3和 DCI format 3 A等; DCI Format size随着系统带宽的增大而增加。 在 LTE系统的版本 (Release, 简称 R) 8/9及 LTE-Adavance系统版本的 R10中, 传输物理层控制信令的物理层控制信道 (Physical Downlink Control channel, PDCCH) 一般配置在前 N个 OFDM(Orthogonal Frequency Division Multiplexing)符号上发送, 一 般称这 N个符号为控制信令传输区域。这里为了与新版本新增的控制信令传输区域区 另 |J, R8/9/10的控制信令传输区域在本发明中被称为第一控制信令传输区域。 第一控制信令传输区域的可用传输资源被划分为多个 CCE资源单位,控制信息占 用资源以 CCE 为单位进行分配, 这里的资源单位 CCE 又可以进一步的细分为多个 REGs, 一个 CCE由多个不连续的 REGs组成, 一般是 9个 REGs构成一个 CCE, 再 进一步的每个 REG由 4个基本资源单位组成, 一个基本资源单位承载一个调制符号, 当采样 QPSK调制时, 一个 CCE可以承载 72个比特。 一个 PDCCH有四种聚合等级 (Aggregation Level), 四种聚合等级分别对应一个 PDCCH占用 1、 2、 4或者 8个 CCE, 称之为聚合等级 1、 聚合等级 2、 聚合等级 4和 聚合等级 8, 也就对应了 PDCCH的四种格式, 也就是说, 聚合等级代表物理下行控制 信道占有的物理资源大小。 每个聚合等级对应 g个候选集, 即, g个可以传输 PDCCH 的位置。 用户设备会在第一控制信令传输区域的各聚合等级相应的候选集位置上盲检 测所述四个聚合等级, 以确定 PDCCH是否有传输, 从而, 获得相应的下行控制信息。 在 R10之后的版本中,为了提高控制信道的传输容量,支持更多用户的控制信令, 设计考虑开辟新的控制信道区域, 并且同一 UE的控制信令传输资源可以是连续的时 频资源, 以支持闭环预编码技术, 提高了控制信息的传输性能。 其中, 新旧版本的控制信令区域如图 3所示, 新版本的控制信令在原来的 R8/9/10 的 PDSCH传输区域划分部分传输资源用于第二控制信令传输区域, 可以使得控制信 令传输时支持闭环预编码技术, 提升控制信令容量支持更多个用户的控制信令。 这里在第二控制信令传输区域, 可以重用 R10中的专有解调导频 (DMRS) 来解 调控制信令, 很好的支持预编码技术。 另外第二控制信令传输区域是以 RB为单位的 可以较好的进行干扰协调。 同时, 考虑到传输鲁棒性和没有信道信息的情况, 在第二控制信令传输区域中, DMRS也可以支持开环的分集技术如 SFBC技术, 或, 开环预编码技术。 为了更好的理解本发明的背景,下面对 LTE-A的资源定义进行一些简单介绍: LTE 一个资源单元 (Resource Element, RE) 为一个 OFDM符号上的一个子载波, 而一个 下行物理资源块 (Resource Block, RB) 由连续 12个子载波和连续 14个 (采用扩展 循环前缀时为 12个) OFDM符号构成, 在频域上为 180kHz, 时域上为一个一般时隙 的时间长度, 即: lms, 如图 4所示 (一个 5M系统;)。 为了在第二控制信令传输区域中传输下行控制信息,同样需要重新定义 CCE, BP: eCCE, 关于 CCE大小定义主要以下几种观点: 一种是仍然保持 R8 的定义, SP: 36 个资源单元, 另一种是为 1个物理资源块所包含的资源单元的 n分之一。 现有技术存在的问题是,第二控制信令区域的大小受限第一控制信令区域的大小, 并且, 在第二控制信令区域上可能传输其他信号, 如: CRS、 PSS/SSS, PBCH, PRS, CSI-RS, DM-RS, PRS, 这将导致 eCCE中实际可以传输下行控制信息的有效比特数量 下降, 从而导致 ePDCCH的有效码率变大, 甚至码率超过 1, 导致下行控制信息不能 正确解码, 因此, 如果用户设备仍然固定按照 LTE系统中定义的四个聚合等级盲检测 的话, 可能存在大量的盲检测浪费, 并且, 限制了搜索空间的扩大, 增加了下行控制 信息的调度阻塞率。 发明内容 本发明提供了一种下行控制信息发送方法、 检测方法、 基站及用户设备, 以至少 解决上述现有下行控制信息传输方式所导致的用户设备的检测资源浪费的问题。 根据本发明的一个方面, 提供了一种下行控制信息检测方法, 包括: 用户设备根 据基站配置的资源块集合和预定义信息, 在资源块上检测增强的物理下行控制信道 ePDCCH承载的下行控制信息; 其中, 预定义信息至少包括以下之一: 资源块集合中 检测的子载波位置信息、 资源块集合中检测的增强控制信道单元信息、 ePDCCH的映 射模式、 在资源块集合中检测的聚合等级配置信息、 在资源块集合中所检测的聚合等 级对应的候选集数量和下行控制信息格式。 优选地, 资源块集合中的资源块数量为以下之一: 2、 4、 6、 8、 12、 16。 优选地, 当资源块集合包含的资源块的数量大于 4时, 用户设备选择 2或 4个资 源块作为检测的资源块集合。 优选地, ePDCCH的映射模式包括连续映射和 /或离散映射。 优选地, 下行控制信息格式根据下行控制信息对应数据的传输模式确定。 优选地, 对于同一种聚合等级的 ePDCCH配置为同一种映射模式。 优选地, 按照聚合等级对应的资源大小,对于所有聚合等级按照从小到大排序为: Nl , N2, ... ... Np, p为正整数, 其中, 聚合等级 Nl, N2... ... Nq所对应的 ePDCCH 配置为连续映射, 聚合等级 N (q+1 ) ... ... Np对应的 ePDCCH配置为离散映射, q为 正整数。 优选地, q由基站配置。 优选地,对于 TDD系统,用户设备在特殊子帧和一般子帧上检测不同的聚合级别 鱼朱 A n 优选地, 对于 TDD系统, 在特殊子帧上, 用户设备根据特殊子帧的配置确定检测 的聚合等级集合。 优选地, 确定检测聚合等级的方式至少包括以下之一: 方式 1 : 用户设备根据所 检测的 eCCE中一个 eCCE传输下行控制信息的有效码率确定所要检测的聚合等级配 置; 方式 2:用户设备根据所检测的 eCCE中一个 eCCE实际传输的最大比特数量确定 所要检测的聚合等级配置; 方式 3 : 用户设备根据检测到的下行控制信息格式的类别 确定所要检测的聚合等级配置; 方式 4: 由基站配置所述用户设备检测的聚合等级。 优选地, 用户设备检测的聚合等级为: 聚合等级 al、 聚合等级 a2、 聚合等级 a3 和聚合等级 a4, 各聚合等级对应的候选集数量分别为 cl, c2, c3 , C4, 当用户设备仅 检测聚合等级 a2, 聚合等级 a3, 聚合等级 a4时, 各聚合等级对应的候选集数量为 c2, c3, c4, 或者各聚合等级对应的候选集数量为 d2, d3, d4, 其中, d2+d3+d4小于等于 cl+c2+c3+c4, al、 a2、 a2、 a4、 cl、 c2、 c3、 c4、 d2、 d2、 d4均为正整数。 优选地, 用户设备检测的聚合等级为: 聚合等级 al, 聚合等级 a2, 聚合等级 a3, 聚合等级 a4, 各聚合等级对应的候选集数量分别为 cl, c2, c3 , C4, 其中, cl, c2, c3, c4分别为 6, 6, 2, 2, 或者分别为 8, 4, 2, 2, 或者分别为 4, 8, 2, 2, 或者 分别为 4, 4, 4, 4, 或者分别为 4, 6, 4, 2。 优选地, 资源块集合包括 4个资源块, 1个资源块包括 4个增强控制信道单元, 1 个增强控制信道单元包括 2个资源组, 所有资源组编号为 #0到 #31, 聚合等级 a表示 ePDCCH对应的资源为 a个增强控制信道单元, 当映射方式为离散映射时, 资源块集 合中检测的子载波位置信息为以下至少之一: 当聚合等级为 1时,资源块集合中检测的子载波位置信息为 «#0, #16), (#2, #18)} , {(#1 , #17), (#3 , #19)} , {(#4, #20), (#6, #22)} , {(#5, #21), (#7, #23)} , {(#8, #24), (#10, #26)} , {(#9, #25), (#11 , #27)} , {(#12, #28), (#14, #30)} , {(#13 , #29), (#15, #31)} , {(#0, #16), (#1 , #17), (#2, #18), (#3 , #19)} , {(#4, #20), (#5, #21), (#6, #22), (#7, #23)} , {(#8, #24), (#9, #25), (#10, #26), (#11 , #27)} , {(#12, #28), (#13 , #29), (#14, #30), (#15, #31)}之一或组合的资源组对应子载波; 或者, 当聚合等级为 2时, 资源块集合中检测的子载波位置信息为 «#0, #1,#16, #17), (#2, #3 , #18, #19)} , {(#4, #5 ,#20, #21), (#6, #7, #22, #23)} , {(#8, #9, #24, #25), (#10, #11, #26, #27)}, {(#12, #13, #28, #29), (#14, #15, #30, #31)}, {(#0, #8,#16, #24), ((#2, #10,#18, #26))} , {(#1, #9,#17, #25), ((#3, #11,#19, #27))}, {(#4, #12,#20, #28), ((#6, #14,#22, #30))} , {(#5, #13,#21, #29), ((#7, #15,#23, #31))}之一或组合的资源组对应子载波。 优选地, 资源块集合包括 2个资源块, 1个资源块包括 4个增强控制信道单元, 对于所有增强控制信道单元编号为 #0到 #7, 聚合等级 a表示 ePDCCH对应的资源为 a 个增强控制信道单元, 资源块集合中检测的增强控制信道单元信息为以下至少之一: 当映射方式为连续映射且聚合等级为 1时, 资源块集合中检测的增强控制信道单 元信息为 #0到 #7; 或者, 当映射方式为连续映射且聚合等级为 2, 资源块集合中检测的增强控制信 道单元信息为 {#0, #1}, {#2, #3}, {#4, #5}, {#6, #7}; 或者, 当映射方式为连续映射且聚合等级为 4, 资源块集合中检测的增强控制信 道单元信息为 {#0, #1, #2, #3}, {#4, #5, #6, #7}; 或者, 当映射方式为离散映射且聚合等级为 2, 资源块集合中检测的增强控制信 道单元信息为 {#0, #4}, {#1, #5}, {#2, #6}, {#3, #7}; 或者, 当映射方式为离散映射且聚合等级为 4, 资源块集合中检测的增强控制信 道单元信息为 {#0, #2, #4, #6}, {#1, #3, #5, #7}。 优选地, 资源块集合包括 4个资源块, 1个资源块包括 4个增强控制信道单元, 对于所有增强控制信道单元编号为 #0到 #15, 聚合等级 a表示 ePDCCH对应的资源为 a个增强控制信道单元, 资源块集合中检测的增强控制信道单元信息为以下至少之一: 当映射方式为连续映射且聚合等级为 1时, 资源块集合中检测的增强控制信道单 元信息为 {#0, #2, #4, #6, #8, #10, #12, #14}或者 {#1, #3, #5, #7, #9, #11, #13, #15}; 或者, 当映射方式为连续映射且聚合等级为 2时, 资源块集合中检测的增强控制 信道单元信息为{ (#0, #1), (#4, #5), (#8, #9), (#12, #13) }或者{ (#2, #3), (#6, #7), (#10, #11), (#14, #15) }; 或者, 当映射方式为连续映射且聚合等级为 4时, 资源块集合中检测的增强控制 信道单元信息为 {(#0, #1 , #2, #3), (#8, #9, #10, #11)}或者 {(#4, #5, #6, #1), (#12, #13, #14, #15)} ; 或者, 当映射方式为离散映射且聚合等级为 2时, 资源块集合中检测的增强控制 信道单元信息为{ ( #0, #8, ( #2, #10 ), ( #4, #12 ), ( #6, #14) }或者{ ( #1 , #9 ) , (#3 , #11 ), (#5 , #13 ), (#7, #15 ) }; 或者, 当映射方式为离散映射且聚合等级为 4时, 资源块集合中检测的增强控制 信道单元信息为 {(#0, #4, #8, #12), (#2, #6, #10, #14)}或者 {(#1, #5, #9, #13), (#3 , #7, #11, #15)} ; 或者, 当映射方式为离散映射且聚合等级为 8时, 资源块集合中检测的增强控制 信道单元信息为 {(#0, #2, #4, #6, #8, #10, #12, #14),( #1, #3, #5, #7, #8, #9, #11, #13)}。 优选地, 按照先时域再频域方式, 以 1个或 2个资源单元为颗粒度划分资源。 优选地, 按照频域子载波分组, 不同组中资源划分方法不同。 优选地, 不同循环前缀对应不同的聚合级别, 或者, 不同循环前缀对应不同的候 选集数量。 根据本发明的另一方面, 提供了一种用户设备, 包括: 接收模块, 设置为接收基 站配置的资源块集合和预定义信息, 其中, 预定义信息至少包括以下之一: 资源块集 合中检测的子载波位置信息、 资源块集合中检测的增强控制信道单元信息、 ePDCCH 的映射模式、 在资源块集合中检测的聚合等级配置信息、 在资源块集合中所检测的聚 合等级对应的候选集数量和下行控制信息格式; 检测模块, 设置为根据资源块集合和 预定义信息,在资源块上检测增强的物理下行控制信道 ePDCCH承载的下行控制信息。 优选地, 资源块集合中的资源块数量为以下之一: 2、 4、 6、 8、 12、 16。 优选地, 当资源块集合包含的资源块的数量大于 4时, 用户设备选择 2或 4个资 源块作为检测的资源块集合。 优选地,对于 TDD系统,用户设备在特殊子帧和一般子帧上检测不同的聚合级别 鱼朱 A n 优选地, 对于 TDD系统, 在特殊子帧上, 用户设备根据特殊子帧的配置确定检测 的聚合等级集合。 优选地, 确定检测聚合等级的方式至少包括以下之一: 方式 1 : 用户设备根据所 检测的 eCCE中一个 eCCE传输下行控制信息的有效码率确定所要检测的聚合等级配 置; 方式 2:用户设备根据所检测的 eCCE中一个 eCCE实际传输的最大比特数量确定 所要检测的聚合等级配置; 方式 3 : 用户设备根据检测到的下行控制信息格式的类别 确定所要检测的聚合等级配置; 方式 4: 由基站配置所述用户设备检测的聚合等级。 优选地, 用户设备检测的聚合等级为: 聚合等级 al、 聚合等级 a2、 聚合等级 a3 和聚合等级 a4, 各聚合等级对应的候选集数量分别为 cl, c2, c3 , C4, 当用户设备仅 检测聚合等级 a2, 聚合等级 a3, 聚合等级 a4时, 各聚合等级对应的候选集数量为 c2, c3, c4, 或者各聚合等级对应的候选集数量为 d2, d3, d4, 其中, d2+d3+d4小于等于 cl+c2+c3+c4, al、 a2、 a2、 a4、 cl、 c2、 c3、 c4、 d2、 d2、 d4均为正整数。 优选地, 用户设备检测的聚合等级为: 聚合等级 al, 聚合等级 a2, 聚合等级 a3, 聚合等级 a4, 各聚合等级对应的候选集数量分别为 cl, c2, c3 , C4, 其中, cl, c2, c3, c4分别为 6, 6, 2, 2, 或者分别为 8, 4, 2, 2, 或者分别为 4, 8, 2, 2, 或者 分别为 4, 4, 4, 4, 或者分别为 4, 6, 4, 2。 优选地, 资源块集合包括 4个资源块, 1个资源块包括 4个增强控制信道单元, 1 个增强控制信道单元包括 2个资源组, 所有资源组编号为 #0到 #31, 聚合等级 a表示 ePDCCH对应的资源为 a个增强控制信道单元, 当映射方式为离散映射时, 资源块集 合中检测的子载波位置信息为以下至少之一: 当聚合等级为 1时,资源块集合中检测的子载波位置信息为 «#0, #16), (#2, #18)} , {(#1 , #17), (#3 , #19)} , {(#4, #20), (#6, #22)} , {(#5 , #21), (#7, #23)} , {(#8, #24), (#10, #26)} , {(#9, #25), (#11 , #27)} , {(#12, #28), (#14, #30)} , {(#13 , #29), (#15, #31)} , {(#0, #16), (#1 , #17), (#2, #18), (#3 , #19)} , {(#4, #20), (#5 , #21), (#6, #22), (#7, #23)} , {(#8, #24), (#9, #25), (#10, #26), (#11 , #27)} , {(#12, #28), (#13 , #29), (#14, #30), (#15, #31)}之一或组合的资源组对应子载波; 或者, 当聚合等级为 2时, 资源块集合中检测的子载波位置信息为 «#0, #1,#16, #17), (#2, #3 , #18, #19)} , {(#4, #5,#20, #21), (#6, #7, #22, #23)} , {(#8, #9, #24, #25), (#10, #11, #26, #27)} , {(#12, #13, #28, #29), (#14, #15, #30, #31)} , {(#0, #8,#16, #24), ((#2, #10,#18, #26))} , {(#1 , #9,#17, #25), ((#3 , #11,#19, #27))} , {(#4, #12,#20, #28), ((#6, #14,#22, #30))} , {(#5, #13,#21, #29), ((#7, #15,#23, #31))}之一或组合的资源组对应子载波。 优选地, 资源块集合包括 2个资源块, 1个资源块包括 4个增强控制信道单元, 对于所有增强控制信道单元编号为 #0到 #7, 聚合等级 a表示 ePDCCH对应的资源为 a 个增强控制信道单元, 资源块集合中检测的增强控制信道单元信息为以下至少之一: 当映射方式为连续映射且聚合等级为 1时, 资源块集合中检测的增强控制信道单 元信息为 #0到 #7; 或者, 当映射方式为连续映射且聚合等级为 2, 资源块集合中检测的增强控制信 道单元信息为 {#0, #1}, {#2, #3}, {#4, #5}, {#6, #7}; 或者, 当映射方式为连续映射且聚合等级为 4, 资源块集合中检测的增强控制信 道单元信息为 {#0, #1, #2, #3}, {#4, #5, #6, #7}; 或者, 当映射方式为离散映射且聚合等级为 2, 资源块集合中检测的增强控制信 道单元信息为 {#0, #4}, {#1, #5}, {#2, #6}, {#3, #7}; 或者, 当映射方式为离散映射且聚合等级为 4, 资源块集合中检测的增强控制信 道单元信息为 {#0, #2, #4, #6}, {#1, #3, #5, #7}。 优选地, 资源块集合包括 4个资源块, 1个资源块包括 4个增强控制信道单元, 对于所有增强控制信道单元编号为 #0到 #15, 聚合等级 a表示 ePDCCH对应的资源为 a个增强控制信道单元, 资源块集合中检测的增强控制信道单元信息为以下至少之一: 当映射方式为连续映射且聚合等级为 1时, 资源块集合中检测的增强控制信道单 元信息为 {#0, #2, #4, #6, #8, #10, #12, #14}或者 {#1, #3, #5, #7, #9, #11, #13, #15}; 或者, 当映射方式为连续映射且聚合等级为 2时, 资源块集合中检测的增强控制 信道单元信息为{ (#0, #1), (#4, #5), (#8, #9), (#12, #13) }或者{ (#2, #3), (#6, #7), (#10, #11), (#14, #15) }; 或者, 当映射方式为连续映射且聚合等级为 4时, 资源块集合中检测的增强控制 信道单元信息为 {(#0, #1, #2, #3), (#8, #9, #10, #11)}或者 {(#4, #5, #6, #1), (#12, #13, #14, #15)}; 或者, 当映射方式为离散映射且聚合等级为 2时, 资源块集合中检测的增强控制 信道单元信息为{ ( #0, #8 , ( #2, #10 ) , ( #4, #12 ) , ( #6, #14) }或者{ ( #1 , #9 ) , (#3 , #11 ), (#5 , #13 ), (#7, #15 ) }; 或者, 当映射方式为离散映射且聚合等级为 4时, 资源块集合中检测的增强控制 信道单元信息为 {(#0, #4, #8, #12), (#2, #6, #10, #14)}或者 {(#1, #5, #9, #13), (#3 , #7, #11, #15)} ; 或者, 当映射方式为离散映射且聚合等级为 8时, 资源块集合中检测的增强控制 信道单元信息为 {(#0, #2, #4, #6, #8, #10, #12, #14),( #1, #3, #5, #7, #8, #9, #11, #13)}。 优选地, 不同循环前缀对应不同的聚合级别, 或者, 不同循环前缀对应不同的候 选集数量。 根据本发明的再一方面, 提供了一种下行控制信息发送方法, 包括: 基站向用户 设备发送配置的资源块集合和预定义信息, 以指示用户设备在资源块上检测增强的物 理下行控制信道 ePDCCH承载的下行控制信息;其中,预定义信息至少包括以下之一: 资源块集合中检测的子载波位置信息、 资源块集合中检测的增强控制信道单元信息、 ePDCCH的映射模式、 在资源块集合中检测的聚合等级配置信息、 在资源块集合中所 检测的聚合等级对应的候选集数量和下行控制信息格式。 优选地, 资源块集合中的资源块数量为以下之一: 2、 4、 6、 8、 12、 16。 优选地, 不同循环前缀对应不同的聚合级别, 或者, 不同循环前缀对应不同的候 选集数量。 根据本发明的又一方面, 提供了一种基站, 包括: 配置模块, 设置为配置资源块 集合和预定义信息, 其中, 预定义信息至少包括以下之一: 资源块集合中检测的子载 波位置信息、 资源块集合中检测的增强控制信道单元信息、 ePDCCH的映射模式、 在 资源块集合中检测的聚合等级配置信息、 在资源块集合中所检测的聚合等级对应的候 选集数量和下行控制信息格式; 发送模块, 设置为向用户设备发送资源块集合和预定 义信息, 以指示用户设备在资源块上检测增强的物理下行控制信道 ePDCCH承载的下 行控制信息。 优选地, 资源块集合中的资源块数量为以下之一: 2、 4、 6、 8、 12、 16。 优选地, 不同循环前缀对应不同的聚合级别, 或者, 不同循环前缀对应不同的候 选集数量。 在本发明中, 通过基站配置的资源块集合和预定义信息来灵活指示用户设备在相 应的物理资源块上检测 ePDCCH承载的下行控制信息, 从而可以节省用户设备检测搜 索空间的资源, 提高了系统的调度效率。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中: 图 1是根据相关技术的 FDD模式的帧结构示意图; 图 2是根据相关技术的 TDD模式的帧结构示意图; 图 3是根据相关技术的新旧版本控制信令区域分布示意图; 图 4是根据相关技术的 LTE-A的资源块示意图; 图 5是根据本发明实施例的下行控制信息检测方法流程图; 图 6是根据本发明实施例的用户设备结构框图; 图 7是根据本发明实施例的下行控制信息发送方法流程图; 图 8是根据本发明实施例的基站结构框图; 图 9-10是根据本发明实施例一的聚合等级为 1时, 资源组对应子载波示意图; 图 11-13是根据本发明实施例一的聚合等级为 2时, 资源组对应子载波示意图; 图 14是根据本发明实施例一的基于 PRB set的 ePDCCH连续映射的搜索空间示意 图; 图 15是根据本发明实施例一的基于 PRB set的 D (离散映射) 搜索空间示意图; 图 16是根据本发明实施例一的基于 PRB set和配置信令的 L (连续映射) 搜索空 间示意图; 图 17-18是根据本发明实施例一的基于 PRB set和配置信令的 D搜索空间 (基于 eCCE离散) 示意图; 图 19-20是根据本发明实施例一的基于 PRB set和配置信令的 D搜索空间 (基于 eREG离散) 示意图; 图 21是根据本发明实施例一的 1个资源块划分为 4个 eCCE的示意图; 以及 图 22是根据本发明实施例一的 1个资源块划分为 8个 eCCE的示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在不冲突的 情况下, 本申请中的实施例及实施例中的特征可以相互组合。 图 5是根据本发明实施例的下行控制信息检测方法流程图。 如图 5所示, 包括: 步骤 S502, 用户设备接收基站配置的资源块集合和预定义信息, 其中, 预定义信 息至少包括以下之一: 资源块集合中检测的子载波位置信息、 资源块集合中检测的增 强控制信道单元信息、 ePDCCH的映射模式、 在资源块集合中检测的聚合等级配置信 息、 在资源块集合中所检测的聚合等级对应的候选集数量和下行控制信息格式; 步骤 S504, 用户设备根据资源块集合和预定义信息, 在资源块上检测增强的物理 下行控制信道 ePDCCH承载的下行控制信息。 在本实施例中, 通过基站配置的资源块集合和预定义信息来灵活指示用户设备在 相应的物理资源块上检测 ePDCCH承载的下行控制信息, 从而可以节省用户设备检测 搜索空间的资源, 提高了系统的调度效率。 其中, 在上述实施例中, 资源块集合包含的资源块的数量可以 2个、 4个、 6个、
8个、 12个、 16个, 但不限于上述取值; 资源块集合中位置信息包括资源块集合中子 载波位置信息; ePDCCH的映射模式包括连续映射、 离散映射; 候选集配置包括用户 专有搜索空间中聚合等级对应的候选集数量; 聚合等级配置信息包括用户专有搜索空 间中聚合等级的配置信息。 其中, 用户设备根据所检测的 eCCE中一个 eCCE包含的有效资源单元数量和 /或 所检测下行控制信息格式确定所要检测的聚合等级配置。聚合等级配置包括配置 1和 / 或配置 2, 其中, 配置 1为: (聚合等级 al, 聚合等级 a2, 聚合等级 a3, 聚合等级 a4), 其中, al, a2, a3 , a4分别为 1, 2, 4, 8; 配置 2为: (聚合等级 bl, 聚合等级 b2, 聚合等级 b3, 聚合等级 b4)或(聚合等级 a2, 聚合等级 a3, 聚合等级 a4), 其中, bl, b2, b3, b4分别为 2, 4, 8, 16, 或分别为 2, 4, 8, 12。 其中, 用户设备根据所检测的 eCCE中一个 eCCE包含的有效资源单元数量和 /或 所检测下行控制信息格式确定所要检测的聚合等级配置, 包括以下方式: 用户设备根据所检测的 eCCE中一个 eCCE传输下行控制信息的有效码率确定所 要检测的聚合等级配置。 当有效码率大于 X时, 采用配置 2, 当有效码率小于等于 X 时, 采用配置 1 ; X为 0.93或 1。 当用户设备所检测的 eCCE中一个 eCCE实际传输的最大比特数量小于下行控制 信息包含的比特数量时, 所要检测的聚合等级为配置 1, 当用户设备所检测的 eCCE 中一个 eCCE实际传输的最大比特数量大于等于下行控制信息包含的比特数量时, 所 要检测的聚合等级为配置 2。 当用户设备检测到下行控制信息格式为 format 0或 formatlA时,所要检测的聚合 等级为配置 1 ; 当用户设备检测到下行控制信息格式为 format 2C时, 所要检测的聚合 等级为配置 2。 图 6是根据本发明实施例的用户设备结构框图。 如图 6所示, 该用户设备包括: 接收模块 10, 设置为接收基站配置的资源块集合和预定义信息, 其中, 预定义信息至 少包括以下之一: 资源块集合中检测的子载波位置信息、 资源块集合中检测的增强控 制信道单元信息、 ePDCCH的映射模式、 在资源块集合中检测的聚合等级配置信息、 在资源块集合中所检测的聚合等级对应的候选集数量和下行控制信息格式; 检测模块 20, 设置为根据资源块集合和预定义信息, 在资源块上检测增强的物理下行控制信道 ePDCCH承载的下行控制信息。 在本实施例中, 通过基站配置的资源块集合和预定义信息来灵活指示用户设备在 相应的物理资源块上检测 ePDCCH承载的下行控制信息, 从而可以节省用户设备检测 搜索空间的资源, 提高了系统的调度效率。 图 7是根据本发明实施例的下行控制信息发送方法流程图。 如图 7所示, 包括步 骤: 步骤 S702, 基站配置资源块集合和预定义信息, 其中, 预定义信息至少包括以下 之一: 资源块集合中检测的子载波位置信息、 资源块集合中检测的增强控制信道单元 信息、 ePDCCH的映射模式、 在资源块集合中检测的聚合等级配置信息、 在资源块集 合中所检测的聚合等级对应的候选集数量和下行控制信息格式; 步骤 S704, 基站向用户设备发送资源块集合和预定义信息, 以指示用户设备在资 源块上检测增强的物理下行控制信道 ePDCCH承载的下行控制信息。 在本实施例中, 通过基站配置的资源块集合和预定义信息来灵活指示用户设备在 相应的物理资源块上检测 ePDCCH承载的下行控制信息, 从而可以节省用户设备检测 搜索空间的资源, 提高了系统的调度效率。 图 8是根据本发明实施例的基站结构框图。 如图 8所示, 该基站包括: 配置模块 30, 设置为配置资源块集合和预定义信息, 其中, 预定义信息至少包括以下之一: 资 源块集合中检测的子载波位置信息、 资源块集合中检测的增强控制信道单元信息、 ePDCCH的映射模式、 在资源块集合中检测的聚合等级配置信息、 在资源块集合中所 检测的聚合等级对应的候选集数量和下行控制信息格式; 发送模块 40, 设置为向用户 设备发送资源块集合和预定义信息, 以指示用户设备在资源块上检测增强的物理下行 控制信道 ePDCCH承载的下行控制信息。 在本实施例中, 通过基站配置的资源块集合和预定义信息来灵活指示用户设备在 相应的物理资源块上检测 ePDCCH承载的下行控制信息, 从而可以节省用户设备检测 搜索空间的资源, 提高了系统的调度效率。 实施例一 本发明实施例详细描述了下行控制信息的检测方法, 下面将结合附图详细描具体 实现流程。 用户设备根据基站配置的资源块集合和预定义信息, 在资源块上检测增强的物理 下行控制信道 (ePDCCH) 承载的下行控制信息; 其中, 预定义信息包括以下信息之 一或其组合: 资源块集合中检测的子载波位置信息, 资源块集合中检测的增强控制信 道单元信息, ePDCCH的映射模式, 在资源块集合中检测的聚合等级配置信息, 在资 源块集合中所检测的聚合等级对应的候选集数量和下行控制信息格式。 其中, 资源块集合包含的资源块的数量可以 2个、 4个、 6个、 8个、 12个、 16 个, 32个, 但不限于上述取值; 资源块集合包含的资源块的数量大于 4时, 用户设备 选择 2或 4个资源块作为检测的资源块集合, 具体选择方式如下: 用户设备可以根据 UE专有配置从资源块集合中选择 2或 4个资源块作为检测的 资源块集合; 每个子帧从资源块集合中选择的 2或 4个资源块可以相同, 也可以不同; UE专有配置, 可以是等间隔的选择资源块, 每个 UE配置专有的起始位置。 其中, ePDCCH的映射模式包括连续映射、 离散映射; 下行控制信息格式根据下 行控制信息对应数据的传输模式确定; 聚合等级 a表示 ePDCCH对应的资源为 a个增 强控制信道单元, 对于同一种聚合级别的 ePDCCH的只能配置为一种映射方式; 按照 聚合等级对应的资源大小,对于所有聚合等级按照从小到大排序为: Nl , N2, ... ... Np, p为正整数, 其中, 聚合级别 Nl, N2... ... Nq对应的 ePDCCH被配置为连续映射, 聚 合级别 N (q+1 ) ... ... Np对应的 ePDCCH被配置为离散映射, q为正整数; q由基站 配置。 具体应用如下: 聚合等级为 1, 2, 4, 8, 其中, q的取值可以是 1, 2, 4, 8, 或者, 1, 2, 4, 或者, 2, 4, 8, 或者, 2, 4, 或者, 1, 或者, 2, 或者, 4, 或者, 8; 当 q为 2时, 贝 U, 1, 2 为连续映射, 4, 8为离散映射, 当 q为 4时, 1, 2 , 4为连续映射, 8为 离散映射。 不同的循环前缀类型 (常规循环前缀、 扩展循环前缀) 定义不同的聚合等级。 具体应用: 当常规循环前缀和扩展循环前缀定义不同的 eCCE的大小时, 常规循 环前缀为 2, 4, 8, 16, 扩展循环前缀为 1, 2, 4, 8; 或者, 常规循环前缀为 2, 4, 8, 扩展循环前缀为 1, 2, 4, 8。 对于 TDD系统,用户设备在特殊子帧和一般子帧上检测不同的聚合级别集合,例 如: 具体应用 1 : 一般子帧上检测级别为 1, 2, 4, 8, 在特殊子帧上检测级别为 2, 4, 8, 16。 具体应用 2: —般子帧上检测级别为 2, 4, 8, 在特殊子帧上检测级别为 4, 8,
具体应用 3 : —般子帧上检测级别为 1, 2, 4, 8, 在特殊子帧上检测级别为 4, 8, 具体应用 4: 一般子帧上检测级别为 4, 8, 16, 在特殊子帧上检测级别为 8, 16, 32; 特殊子帧的聚合级别可以是配置的, 也可以是固定的。 对于 TDD系统,在特殊子帧上,用户设备根据特殊子帧的配置确定检测的聚合级 别集合。 用户设备确定检测聚合等级的方式包括以下至少之一: 方式 1 :当用户设备根据所检测的 eCCE中一个 eCCE传输下行控制信息的有效码 率确定所要检测的聚合等级配置。 方式 2:当用户设备根据所检测的 eCCE中一个 eCCE实际传输的最大比特数量确 定所要检测的聚合等级配置。 方式 3 : 当用户设备检测下行控制信息格式 Y时, 所要检测的聚合等级为配置 1 ; 当用户设备检测下行控制信息格式 Z时, 所要检测的聚合等级为配置 2。 方式 4: 基站配置用户设备检测的聚合级别。 具体应用如下: 用户设备需要检测的聚合等级为: 配置 1 (聚合等级 al, 聚合等级 a2, 聚合等级 a3 , 聚合等级 a4), 配置 2 (聚合等级 bl, 聚合等级 b2, 聚合等级 b3, 聚合等级 b4); 或者, 配置 1 (聚合等级 al, 聚合等级 a2, 聚合等级 a3, 聚合等级 a4), 配置 2 (聚 合等级 a2, 聚合等级 a3, 聚合等级 a4)。 al , a2, a3 , a4可以为 1, 2, 4, 8, 仅为示 例, 不限于该取值; bl, b2, b3, b4可以为 2, 4, 8, 16, 或, 2, 4, 8, 12, 仅为 示例, 不限于该取值。 用户设备根据所检测的 eCCE中一个 eCCE包含的有效资源单元数量和或所检测 下行控制信息格式 (下行控制信息包含的比特数量) 确定所要检测的聚合等级配置; 具体包括以下方式: 方式 1 :当用户设备根据所检测的 eCCE中一个 eCCE传输下行控制信息的有效码 率确定所要检测的聚合等级配置, 即: 当所述有效码率大于 X时, 采用配置 2, 当所 述有效码率小于等于 X时, 采用配置 1 ; X可以为 0.93 或 1, 不限于该取值。 方式 2:当用户设备根据所检测的 eCCE中一个 eCCE实际传输的最大比特数量确 定所要检测的聚合等级配置, 即: 所述 eCCE实际传输的最大比特数量小于下行控制 信息包含的比特数量时, 所要检测的聚合等级为配置 1, eCCE实际传输的最大比特数 量大于下行控制信息包含的比特数量时, 所要检测的聚合等级为配置 2。 方式 3 : 当用户设备检测下行控制信息格式 Y时, 所要检测的聚合等级为配置 1 ; 当用户设备检测下行控制信息格式 Z时, 所要检测的聚合等级为配置 2; Y可以为 0, 1A, Z可以为 2C, 4; 不限于上述取值。 方式 4: 基站发送信令, 指示用户设备所要检测的聚合等级。 假设,用户设备需要检测的聚合等级为:聚合等级 al,聚合等级 a2,聚合等级 a3, 聚合等级 a4, 各聚合等级对应的候选集数量为 cl, c2, c3 , C4, 贝 ij, 当用户设备仅检 测聚合等级 a2, 聚合等级 a3, 聚合等级 a4时, 各聚合等级对应的候选集数量为 c2, c3, c4, 或者, 各聚合等级对应的候选集数量为 d2, d3 , d4, 其中, d2+d3+d4小于等 于 cl+c2+c3+c4; 具体应用如下: cl, c2, c3, c4 分别为 6,6,2,2, 或者, 8,4,2,2, 或者, 4,8,2,2, 贝 lj, d2, d3 , d4 分别为 8,4,4, 或者, 8,4,2, 或者, 12,2,2, 或者, 8,6,2等; al, a2, a3, a4可以为 1, 2, 4, 8, 仅为示例, 不限于该取值; 用户设备检测的聚合等级为: 聚合等级 al, 聚合等级 a2, 聚合等级 a3, 聚合等级 a4,各聚合等级对应的候选集数量为 cl, c2, c3, c4,贝 lj, cl, c2, c3, c4分别为 6,6,2,2, 或者, 8,4,2,2, 或者, 4,8,2,2, 或者, 4,4,4,4, 或者, 4,6,4,2。 不同循环前缀对应不同的候选集数量; 具体应用如下: 用户设备检测的聚合等级为: 聚合等级 al, 聚合等级 a2, 聚合等级 a3, 聚合等级 a4, 各聚合等级对应的候选集数量为 cl, c2, c3 , C4, 贝 ij, 常规循环前缀, cl, c2, c3 , c4为 4, 8, 2, 2, 扩展 : 环前缀 c2, c3 , c4为 4 或者, 常: 环前缀, cl, c2, c3, c4为 4 6, 4, 扩展循环〗 1 c2, c3 c4为 6 6,
连续映射的 ePDCCH对应的 eCCE称之为 L-eCCE映射在 1个资源块上, 离散映 射的 ePDCCH对应的 eCCE称之为 D-eCCE映射在多个资源块上。 假设, 资源块集合包括 4个资源块, 1 个资源块包括 4个增强控制信道单元, 1 个增强控制信道单元包括 2个资源组, 对于所有资源组编号为 #0到 #31, 聚合等级 a 表示 ePDCCH对应的资源为 a个增强控制信道单元, 贝 1」, 当映射方式为离散映射时, 资源块集合中检测的子载波位置信息为以下至少之一: 如图 9和 11所示,当聚合等级为 1时,资源块集合中检测的子载波位置信息为 «#0,
#16), (#2, #18)} , {(#1, #17), (#3, #19)} , {(#4, #20), (#6, #22)} , {(#5, #21), (#7, #23)} , {(#8, #24), (#10, #26)} , {(#9, #25), (#11, #27)} , {(#12, #28), (#14, #30)} , {(#13, #29), (#15, #31)}, {(#0, #16), (#1, #17), (#2, #18), (#3, #19)} , {(#4, #20), (#5, #21), (#6, #22), (#7, #23)} , {(#8, #24), (#9, #25), (#10, #26), (#11, #27)} , {(#12, #28), (#13, #29), (#14, #30), (#15, #31)} 之一或组合的资源组对应子载波。 如图 11-13所示,当聚合等级为 2时,资源块集合中检测的子载波位置信息为 «#0, #1, #16, #17), (#2, #3, #18, #19)} , {(#4, #5, #20, #21), (#6, #7, #22, #23)} , {(#8, #9, #24, #25), (#10, #11, #26, #27)}, {(#12, #13, #28, #29), (#14, #15, #30, #31)}, {(#0, #8, #16, #24), ((#2, #10, #18, #26))} , {(#1, #9, #17, #25), ((#3, #11, #19, #27))}, {(#4, #12, #20, #28), ((#6, #14, #22, #30))}, {(#5, #13, #21, #29), ((#7, #15, #23, #31))}之一或组合的资源组对应子载波。 资源块集合包括 2个资源块, 1个资源块包括 4个增强控制信道单元, 对于所有 增强控制信道单元编号为 #0到 #7,聚合等级 a表示 ePDCCH对应的资源为 a个增强控 制信道单元, 贝 1」, 资源块集合中检测的增强控制信道单元信息为以下至少之一: 当映射方式为连续映射且聚合等级为 1时, 资源块集合中检测的增强控制信道单 元信息为 #0到 #7。 当映射方式为连续映射且聚合等级为 2, 资源块集合中检测的增强控制信道单元 信息为 {#0, #1}, {#2, #3}, {#4, #5}, {#6, #7}。 当映射方式为连续映射且聚合等级为 4, 资源块集合中检测的增强控制信道单元 信息为 {#0, #1, #2, #3}, {#4, #5, #6, #7}。 当映射方式为离散映射且聚合等级为 2, 资源块集合中检测的增强控制信道单元 信息为 {#0, #4}, {#1, #5}, {#2, #6}, {#3, #7}。 当映射方式为离散映射且聚合等级为 4, 资源块集合中检测的增强控制信道单元 信息为 {#0, #2, #4, #6}, {#\, #3, #5, #7}。 资源块集合包括 2个资源块, 1个资源块包括 4个增强控制信道单元, 对于所有 增强控制信道单元编号为 #0到 #7,聚合等级 a表示 ePDCCH对应的资源为 a个增强控 制信道单元, 贝 1」, 所述资源块集合中检测的增强控制信道单元信息为以下至少之一: 当映射方式为连续映射且聚合等级为 1时, 资源块集合中检测的增强控制信道单 元信息为 #0到 #7。 当映射方式为连续映射且聚合等级为 2, 资源块集合中检测的增强控制信道单元 信息为 {#0, #1 } , {#2, #3} , {#4, #5} , {#6, #7}。 当映射方式为连续映射且聚合等级为 4, 资源块集合中检测的增强控制信道单元 信息为 {#0, #1 , #2, #3} , {#4, #5, #6, #7}。 当映射方式为离散映射且聚合等级为 2, 资源块集合中检测的增强控制信道单元 信息为 {#0, #4}, {#1, #5}, {#2, #6}, {#3 , #7}。 当映射方式为离散映射且聚合等级为 4, 资源块集合中检测的增强控制信道单元 信息为 {#0, #2, #4, #6} , {#1 , #3 , #5, #7}。 具体的搜索空间定义如下所示: 以 PRB为单位定义搜索空间, 不同 UE在相同的 PRB上按照相同的预定组合检 测, 例如: 以 2个 PRB定义 UE的搜索空间 (根据 PRB set确定)。 对于连续映射, 定义如图 14所示 14个候选集, 由 L1到 L14表示; 对于离散映 射, 也可以定义如图 15所示 7个候选集, 由 D9到 D15表示。 资源块集合包括 4个资源块, 1个资源块包括 4个增强控制信道单元, 对于所有 增强控制信道单元编号为 #0到 #15, 聚合等级 a表示 ePDCCH对应的资源为 a个增强 控制信道单元, 则资源块集合中检测的增强控制信道单元信息为以下至少之一: 当映射方式为连续映射且聚合等级为 1时, 资源块集合中检测的增强控制信道单 元信息为 {#0, #2, #4, #6, #8, #10, #12, #14},或者, {#1, #3, #5, #7, #9, #11 , #13, #15}。 当映射方式为连续映射且聚合等级为 2, 资源块集合中检测的增强控制信道单元 信息为 { (#0, #1 ), (#4, #5 ), (#8, #9), (#12, #13 ) },或者, { (#2, #3 ), (#6, #7), (#10, #11 ), (#14, #15 ) }。 当映射方式为连续映射且聚合等级为 4, 资源块集合中检测的增强控制信道单元 信息为 {(#0, #1 , #2, #3), (#8, #9, #10, #11)},或者, {(#4, #5 , #6, #7), (#12, #13 , #14, #15 。 当映射方式为离散映射且聚合等级为 2, 资源块集合中检测的增强控制信道单元 信息为 { ( #0, #8, ( #2, #10), ( #4, #12), (#6, #14) },或者, { ( #1 , #9 ), ( #3 , #11 ), (#5 , #13 ), (#7, #15 ) }。 当映射方式为离散映射且聚合等级为 4, 资源块集合中检测的增强控制信道单元 信息为 {(#0, #4, #8, #12), (#2, #6, #10, #14)},或者, {(#1 , #5, #9, #13), (#3 , #7, #11, #15)}。 当映射方式为离散映射且聚合等级为 8, 资源块集合中检测的增强控制信道单元 信息为 {(#0, #2, #4, #6, #8, #10, #12, #14),( #1, #3 , #5, #7, #8, #9, #11 , #13)}。 以 PRB为单位定义搜索空间, 不同 UE在相同的 PRB上可以按照不同的预定组 合检测; 并且, 聚合等级 1与聚合等级 2对应不同的资源, 以便减少不同聚合等级同 时阻塞的概率。 (根据 PRB set和 pattern Index确定)。 对于连续映射, 定义如图 16所示两种配置, 每种配置 14个候选集, 由 L1到 L14 表示。对于离散映射, 也可以定义如图 17和 18所示两种配置, 每种配置 8个候选集, 由 D9到 D15表示; 或者, 如图 19和 20所示两种配置, 每种配置 16个候选集; 由 D1到 D16表示。 按照先时域再频域, 以 1个 (2个) 资源单元为颗粒度划分资源, 具体如下: 1个资源块划分为 4个 eCCE, 如图 21所示; 不同序号代表不同的 eCCE; 按照频域子载波分组, 不同组对应不同的资源划分;
1个资源块划分为 8个 eREG (增强的资源组), 以 4个子载波为单位, 将资源块 划分为 3组, 相同 eREG编号在不同组对应的相对位置不同, 如图 22所示, 不同序号 代表不同的 eREG; 在另外一个实施例中, 还提供了一种软件, 该软件用于执行上述实施例中描述的 技术方案。 在另外一个实施例中, 还提供了一种存储介质, 该存储介质中存储有上述软件, 该存储介质包括但不限于光盘、 软盘、 硬盘、 可擦写存储器等。 在本发明的上述各实施例中, 通过基站配置的资源块集合和预定义信息来灵活指 示用户设备在相应的物理资源块上检测 ePDCCH承载的下行控制信息, 从而可以节省 用户设备检测搜索空间的资源, 提高了系统的调度效率。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而, 可以 将它们存储在存储装置中由计算装置来执行, 并且在某些情况下, 可以以不同于此处 的顺序执行所示出或描述的步骤, 或者将它们分别制作成各个集成电路模块, 或者将 它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明不限制于任 何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种下行控制信息检测方法, 包括:
用户设备根据基站配置的资源块集合和预定义信息, 在所述资源块上检测 增强的物理下行控制信道 ePDCCH承载的下行控制信息; 其中, 所述预定义信 息至少包括以下之一: 所述资源块集合中检测的子载波位置信息、 所述资源块 集合中检测的增强控制信道单元信息、 ePDCCH的映射模式、 在所述资源块集 合中检测的聚合等级配置信息、 在所述资源块集合中所检测的聚合等级对应的 候选集数量和下行控制信息格式。
2. 根据权利要求 1所述的方法, 其中, 所述资源块集合中的资源块数量为以下之 一: 2、 4、 6、 8、 12、 16。
3. 根据权利要求 2所述的方法, 其中, 当所述资源块集合包含的资源块的数量大 于 4时, 所述用户设备选择 2或 4个资源块作为检测的资源块集合。
4. 根据权利要求 1所述的方法, 其中, 所述 ePDCCH的映射模式包括连续映射和
/或离散映射。
5. 根据权利要求 1所述的方法, 其中, 所述下行控制信息格式根据所述下行控制 信息对应数据的传输模式确定。
6. 根据权利要求 4所述的方法, 其中, 对于同一种聚合等级的 ePDCCH配置为同 一种映射模式。
7. 根据权利要求 6所述的方法, 其中, 按照聚合等级对应的资源大小, 对于所有 聚合等级按照从小到大排序为: Nl, N2, ... ... Np, p为正整数, 其中, 聚合等 级 Nl,N2... ... Nq所对应的 ePDCCH配置为连续映射,聚合等级 N( q+1 ) ... ... Np 对应的 ePDCCH配置为离散映射, q为正整数。
8. 根据权利要求 7所述的方法, 其中, 所述 q由所述基站配置, 或者, q为固定 值, 或者, 对于不同循环前缀类型子帧, 定义不同的 q值, 其中, 所述循环前 缀包括常规循环前缀和扩展循环前缀。
9. 根据权利要求 1所述的方法, 其中, 对于 TDD系统, 所述用户设备在特殊子 帧和一般子帧上检测不同的聚合级别集合。
10. 根据权利要求 9所述的方法, 其中, 对于 TDD系统, 在所述特殊子帧上, 所 述用户设备根据特殊子帧的配置确定检测的聚合等级集合。
11. 根据权利要求 1所述的方法, 其中, 所述确定检测聚合等级的方式至少包括以 下之一:
方式 1 : 所述用户设备根据所检测的 eCCE中一个 eCCE传输下行控制信 息的有效码率确定所要检测的聚合等级配置;
方式 2: 用户设备根据所检测的 eCCE中一个 eCCE实际传输的最大比特 数量确定所要检测的聚合等级配置;
方式 3 : 所述用户设备根据检测的所述下行控制信息格式的类别确定所要 检测的聚合等级配置;
方式 4: 由所述基站配置所述用户设备检测的聚合等级。
12. 根据权利要求 1所述的方法, 其中,
所述用户设备检测的聚合等级为: 聚合等级 al、 聚合等级 a2、 聚合等级 a3和聚合等级 a4, 各聚合等级对应的候选集数量分别为 cl, c2, c3 , C4, 当用 户设备仅检测聚合等级 a2, 聚合等级 a3, 聚合等级 a4时, 各聚合等级对应的 候选集数量为 c2, c3 , c4, 或者, 各聚合等级对应的候选集数量为 d2, d3, d4, 其中, d2+d3+d4小于等于 cl+c2+c3+c4, al、 a2、 a3、 a4、 cl、 c2、 c3、 c4、 d2、 d2、 d4均为正整数。
13. 根据权利要求 1所述的方法, 其中, 所述用户设备检测的聚合等级为: 聚合等 级 al, 聚合等级 a2, 聚合等级 a3, 聚合等级 a4, 各聚合等级对应的候选集数 量分别为 cl, c2, c3, c4, 其中, cl, c2, c3, c4分别为 6, 6, 2, 2, 或者分 别为 8, 4, 2, 2, 或者分别为 4, 8, 2, 2, 或者分别为 4, 4, 4, 4, 或者分 别为 4, 6, 4, 2, 其中, al、 a2、 a3、 a4为正整数。
14. 根据权利要求 1所述的方法, 其中, 所述资源块集合包括 4个资源块, 1个资 源块包括 4个增强控制信道单元, 1个增强控制信道单元包括 2个资源组, 所 有资源组编号为 #0到 #31, 聚合等级 a表示 ePDCCH对应的资源为 a个增强控 制信道单元, 当所述映射方式为离散映射时, 所述资源块集合中检测的子载波 位置信息为以下至少之一:
当聚合等级为 1时,所述资源块集合中检测的子载波位置信息为 «#0, #16), (#2, #18)} , {(#1 , #17), (#3 , #19)}, {(#4, #20), (#6, #22)} , {(#5, #21), (#7, #23)}, {(#8, #24), (#10, #26)}, {(#9, #25), (#11, #27)} , {(#12, #28), (#14, #30)} , {(#13, #29), (#15, #31)}, {(#0, #16), (#1, #17), (#2, #18), (#3, #19)} , {(#4, #20), (#5, #21), (#6, #22), (#7, #23)} , {(#8, #24), (#9, #25), (#10, #26), (#11, #27)} , {(#12, #28), (#13, #29), (#14, #30), (#15, #31)}之一或 组合的资源组对应子载波;
或者, 当聚合等级为 2 时, 所述资源块集合中检测的子载波位置信息为 {(#0, #1,#16, #17), (#2, #3, #18, #19)} , {(#4, #5,#20, #21), (#6, #7, #22, #23)} , {(#8, #9, #24, #25), (#10, #11, #26, #27)}, {(#12, #13, #28, #29), (#14, #15, #30, #31)}, {(#0, #8,#16, #24), ((#2, #10,#18, #26))} , {(#1, #9,#17, #25), ((#3, #11,#19, #27))}, {(#4, #12,#20, #28), ((#6, #14,#22, #30))} , {(#5, #13,#21, #29), ((#7, #15,#23, #31))}之一或组合的资源组对 应子载波。
15. 根据权利要求 1所述的方法, 其中, 所述资源块集合包括 2个资源块, 1个资 源块包括 4个增强控制信道单元, 对于所有增强控制信道单元编号为 #0到 #7, 聚合等级 a表示 ePDCCH对应的资源为 a个增强控制信道单元, 所述资源块集 合中检测的增强控制信道单元信息为以下至少之一:
当所述映射方式为连续映射且聚合等级为 1时, 所述资源块集合中检测的 增强控制信道单元信息为 #0到 #7;
或者, 当所述映射方式为连续映射且聚合等级为 2, 所述资源块集合中检 测的增强控制信道单元信息为 {#0, #1}, {#2, #3}, {#4, #5}, {#6, #7}; 或者, 当所述映射方式为连续映射且聚合等级为 4, 所述资源块集合中检 测的增强控制信道单元信息为 {#0, #1, #2, #3}, {#4, #5, #6, #7};
或者, 当所述映射方式为离散映射且聚合等级为 2, 所述资源块集合中检 测的增强控制信道单元信息为 {#0, #4}, {#1, #5}, {#2, #6}, {#3, #7}; 或者, 当所述映射方式为离散映射且聚合等级为 4, 所述资源块集合中检 测的增强控制信道单元信息为 {#0, #2, #4, #6}, {#1, #3, #5, #7}。
16. 根据权利要求 1所述的方法, 其中, 所述资源块集合包括 4个资源块, 1个资 源块包括 4个增强控制信道单元,对于所有增强控制信道单元编号为 #0到 #15, 聚合等级 a表示 ePDCCH对应的资源为 a个增强控制信道单元, 所述资源块集 合中检测的增强控制信道单元信息为以下至少之一: 当所述映射方式为连续映射且聚合等级为 1时, 所述资源块集合中检测的 增强控制信道单元信息为 {#0, #2, #4, #6, #8, #10, #12, #14}或者 {#1, #3, #5, #7, #9, #11, #13, #15} ;
或者, 当所述映射方式为连续映射且聚合等级为 2时, 所述资源块集合中 检测的增强控制信道单元信息为 { (#0, #1 ),(#4, #5),(#8, #9),(#12, #13 ) } 或者 { (#2, #3 ), (#6, #7), (#10, #11 ), (#14, #15 ) };
或者, 当所述映射方式为连续映射且聚合等级为 4时, 所述资源块集合中 检测的增强控制信道单元信息为 «#0, #1, #2, #T), (#8, #9, #10, #11)}或者 {(#4, #5 , #6, #7), (#12, #13 , #14, #15)};
或者, 当所述映射方式为离散映射且聚合等级为 2时, 所述资源块集合中 检测的增强控制信道单元信息为 { (#0, #8,(#2, #10),(#4, #12),(#6, #14) } 或者 { (#1 , #9), (#3 , #11 ), (#5 , #13 ), (#7, #15 ) };
或者, 当所述映射方式为离散映射且聚合等级为 4时, 所述资源块集合中 检测的增强控制信道单元信息为 «#0, #4, #8, #12), (#2, #6, #10, #14)}或 者 {(#1, #5, #9, #13), (#3 , #7, #11, #15)} ;
或者, 当所述映射方式为离散映射且聚合等级为 8时, 所述资源块集合中 检测的增强控制信道单元信息为 {(#0, #2, #4, #6, #8, #10, #12, #14),( #1, #3, #5, #7, #8, #9, #11, #13)}。
17. 根据权利要求 1所述的方法, 其中, 按照先时域再频域方式, 以 1个或 2个资 源单元为颗粒度划分资源。
18. 根据权利要求 1所述的方法, 其中, 按照频域子载波分组, 不同组中资源划分 方法不同。
19. 根据权利要求 1所述的方法, 其中, 不同循环前缀对应不同的聚合级别, 或者, 不同循环前缀对应不同的候选集数量。
20. 一种用户设备, 包括:
接收模块, 设置为接收基站配置的资源块集合和预定义信息, 其中, 所述 预定义信息至少包括以下之一: 所述资源块集合中检测的子载波位置信息、 所 述资源块集合中检测的增强控制信道单元信息、 ePDCCH的映射模式、 在所述 资源块集合中检测的聚合等级配置信息、 在所述资源块集合中所检测的聚合等 级对应的候选集数量和下行控制信息格式; 检测模块, 设置为根据所述资源块集合和所述预定义信息, 在所述资源块 上检测增强的物理下行控制信道 ePDCCH承载的下行控制信息。
21. 根据权利要求 20所述的用户设备,其中,所述资源块集合中的资源块数量为以 下之一: 2、 4、 6、 8、 12、 16。
22. 根据权利要求 21所述的用户设备,其中, 当所述资源块集合包含的资源块的数 量大于 4时, 所述用户设备选择 2或 4个资源块作为检测的资源块集合。
23. 根据权利要求 20所述的用户设备, 其中, 对于 TDD系统, 所述用户设备在特 殊子帧和一般子帧上检测不同的聚合级别集合。
24. 根据权利要求 23所述的用户设备, 其中, 对于 TDD系统, 在所述特殊子帧上, 所述用户设备根据特殊子帧的配置确定检测的聚合等级集合。
25. 根据权利要求 20所述的用户设备,其中,所述确定检测聚合等级的方式至少包 括以下之一:
方式 1 : 所述用户设备根据所检测的 eCCE中一个 eCCE传输下行控制信 息的有效码率确定所要检测的聚合等级配置;
方式 2: 用户设备根据所检测的 eCCE中一个 eCCE实际传输的最大比特 数量确定所要检测的聚合等级配置;
方式 3 : 所述用户设备根据检测的所述下行控制信息格式的类别确定所要 检测的聚合等级配置;
方式 4: 由所述基站配置所述用户设备检测的聚合等级。
26. 根据权利要求 20所述的用户设备, 其中,
所述用户设备检测的聚合等级为: 聚合等级 al、 聚合等级 a2、 聚合等级 a3和聚合等级 a4, 各聚合等级对应的候选集数量分别为 cl, c2, c3 , C4, 当用 户设备仅检测聚合等级 a2, 聚合等级 a3, 聚合等级 a4时, 各聚合等级对应的 候选集数量为 c2, c3 , c4, 或者, 各聚合等级对应的候选集数量为 d2, d3, d4, 其中, d2+d3+d4小于等于 cl+c2+c3+c4, al、 a2、 a3、 a4、 cl、 c2、 c3、 c4、 d2、 d2、 d4均为正整数。
27. 根据权利要求 20所述的用户设备, 其中, 所述用户设备检测的聚合等级为: 聚 合等级 al, 聚合等级 a2, 聚合等级 a3, 聚合等级 a4, 各聚合等级对应的候选 集数量分别为 cl, c2, c3, c4, 其中, cl, c2, c3, c4分别为 6, 6, 2, 2, 或 者分别为 8, 4, 2, 2, 或者分别为 4, 8, 2, 2, 或者分别为 4, 4, 4, 4, 或 者分别为 4, 6, 4, 2, 其中, al、 a2、 a3、 a4为正整数。
28. 根据权利要求 20所述的用户设备, 其中, 所述资源块集合包括 4个资源块, 1 个资源块包括 4个增强控制信道单元, 1个增强控制信道单元包括 2个资源组, 所有资源组编号为 #0到 #31, 聚合等级 a表示 ePDCCH对应的资源为 a个增强 控制信道单元, 当所述映射方式为离散映射时, 所述资源块集合中检测的子载 波位置信息为以下至少之一:
当聚合等级为 1时,所述资源块集合中检测的子载波位置信息为 «#0, #16), (#2, #18)} , {(#1 , #17), (#3 , #19)}, {(#4, #20), (#6, #22)} , {(#5, #21), (#7, #23)} , {(#8, #24), (#10, #26)} , {(#9, #25), (#11 , #27)} , {(#12, #28), (#14, #30)} , {(#13 , #29), (#15, #31)} , {(#0, #16), (#1 , #17), (#2, #18), (#3 , #19)} , {(#4, #20), (#5, #21), (#6, #22), (#7, #23)} , {(#8, #24), (#9, #25), (#10, #26), (#11 , #27)} , {(#12, #28), (#13, #29), (#14, #30), (#15, #31)}之一或 组合的资源组对应子载波;
或者, 当聚合等级为 2 时, 所述资源块集合中检测的子载波位置信息为 {(#0, #1,#16, #17), (#2, #3, #18, #19)} , {(#4, #5,#20, #21), (#6, #7, #22, #23)} , {(#8, #9, #24, #25), (#10, #11 , #26, #27)} , {(#12, #13 , #28, #29), (#14, #15, #30, #31)}, {(#0, #8,#16, #24), ((#2, #10,#18, #26))} , {(#1 , #9,#17, #25), ((#3 , #11,#19, #27))} , {(#4, #12,#20, #28), ((#6, #14,#22, #30))} , {(#5 , #13,#21 , #29), ((#7, #15,#23 , #31))}之一或组合的资源组对 应子载波。
29. 根据权利要求 20所述的用户设备, 其中, 所述资源块集合包括 2个资源块, 1 个资源块包括 4个增强控制信道单元,对于所有增强控制信道单元编号为 #0到 #7, 聚合等级 a表示 ePDCCH对应的资源为 a个增强控制信道单元, 所述资源 块集合中检测的增强控制信道单元信息为以下至少之一:
当所述映射方式为连续映射且聚合等级为 1时, 所述资源块集合中检测的 增强控制信道单元信息为 #0到 #7;
或者, 当所述映射方式为连续映射且聚合等级为 2, 所述资源块集合中检 测的增强控制信道单元信息为 {#0, #1 } , {#2, #3} , {#4, #5} , {#6, #7}; 或者, 当所述映射方式为连续映射且聚合等级为 4, 所述资源块集合中检 测的增强控制信道单元信息为 {#0, #1, #2, #3}, {#4, #5, #6, #7} ; 或者, 当所述映射方式为离散映射且聚合等级为 2, 所述资源块集合中检 测的增强控制信道单元信息为 {#0, #4}, {#1, #5}, {#2, #6}, {#3, #7} ; 或者, 当所述映射方式为离散映射且聚合等级为 4, 所述资源块集合中检 测的增强控制信道单元信息为 {#0, #2, #4, #6} , {#1, #3 , #5 , #7}。
30. 根据权利要求 20所述的用户设备, 其中, 所述资源块集合包括 4个资源块, 1 个资源块包括 4个增强控制信道单元,对于所有增强控制信道单元编号为 #0到 #15, 聚合等级 a表示 ePDCCH对应的资源为 a个增强控制信道单元, 所述资 源块集合中检测的增强控制信道单元信息为以下至少之一:
当所述映射方式为连续映射且聚合等级为 1时, 所述资源块集合中检测的 增强控制信道单元信息为 {#0, #2, #4, #6, #8, #10, #12, #14}或者 {#1, #3, #5, #7, #9, #11, #13, #15} ;
或者, 当所述映射方式为连续映射且聚合等级为 2时, 所述资源块集合中 检测的增强控制信道单元信息为 { (#0, #1 ),(#4, #5),(#8, #9),(#12, #13 ) } 或者 { (#2, #3 ), (#6, #7), (#10, #11 ), (#14, #15 ) };
或者, 当所述映射方式为连续映射且聚合等级为 4时, 所述资源块集合中 检测的增强控制信道单元信息为 «#0, #1, #2, #T), (#8, #9, #10, #11)}或者 {(#4, #5 , #6, #7), (#12, #13 , #14, #15)};
或者, 当所述映射方式为离散映射且聚合等级为 2时, 所述资源块集合中 检测的增强控制信道单元信息为 { (#0, #8,(#2, #10),(#4, #12),(#6, #14) } 或者 { (#1 , #9), (#3 , #11 ), (#5 , #13 ), (#7, #15 ) };
或者, 当所述映射方式为离散映射且聚合等级为 4时, 所述资源块集合中 检测的增强控制信道单元信息为 «#0, #4, #8, #12), (#2, #6, #10, #14)}或 者 {(#1, #5, #9, #13), (#3 , #7, #11, #15)} ;
或者, 当所述映射方式为离散映射且聚合等级为 8时, 所述资源块集合中 检测的增强控制信道单元信息为 {(#0, #2, #4, #6, #8, #10, #12, #14),( #1, #3, #5, #7, #8, #9, #11, #13)}。
31 . 根据权利要求 20所述的用户设备, 其中, 不同循环前缀对应不同的聚合级别, 或者, 不同循环前缀对应不同的候选集数量。
32. 一种下行控制信息发送方法, 包括: 基站向用户设备发送配置的资源块集合和预定义信息, 以指示所述用户设 备在所述资源块上检测增强的物理下行控制信道 ePDCCH承载的下行控制信 息; 其中, 所述预定义信息至少包括以下之一: 所述资源块集合中检测的子载 波位置信息、 所述资源块集合中检测的增强控制信道单元信息、 ePDCCH的映 射模式、 在所述资源块集合中检测的聚合等级配置信息、 在所述资源块集合中 所检测的聚合等级对应的候选集数量和下行控制信息格式。
33. 根据权利要求 32所述的方法,其中,所述资源块集合中的资源块数量为以下之 一: 2、 4、 6、 8、 12、 16。
34. 根据权利要求 32所述的方法,其中,不同循环前缀对应不同的聚合级别,或者, 不同循环前缀对应不同的候选集数量。
35. 一种基站, 包括:
配置模块, 设置为配置资源块集合和预定义信息, 其中, 所述预定义信息 至少包括以下之一: 所述资源块集合中检测的子载波位置信息、 所述资源块集 合中检测的增强控制信道单元信息、 ePDCCH的映射模式、 在所述资源块集合 中检测的聚合等级配置信息、 在所述资源块集合中所检测的聚合等级对应的候 选集数量和下行控制信息格式;
发送模块, 设置为向用户设备发送所述资源块集合和预定义信息, 以指示 所述用户设备在所述资源块上检测增强的物理下行控制信道 ePDCCH承载的 下行控制信息。
36. 根据权利要求 35所述的基站,其中,所述资源块集合中的资源块数量为以下之 一: 2、 4、 6、 8、 12、 16。
37. 根据权利要求 35所述的基站,其中,不同循环前缀对应不同的聚合级别,或者, 不同循环前缀对应不同的候选集数量。
PCT/CN2012/087515 2012-05-11 2012-12-26 下行控制信息发送方法、检测方法、基站及用户设备 Ceased WO2013166847A1 (zh)

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