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WO2014180157A1 - Procédé et dispositifs de transmission de signalisation de commande de liaison descendante - Google Patents

Procédé et dispositifs de transmission de signalisation de commande de liaison descendante Download PDF

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Publication number
WO2014180157A1
WO2014180157A1 PCT/CN2013/090973 CN2013090973W WO2014180157A1 WO 2014180157 A1 WO2014180157 A1 WO 2014180157A1 CN 2013090973 W CN2013090973 W CN 2013090973W WO 2014180157 A1 WO2014180157 A1 WO 2014180157A1
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WIPO (PCT)
Prior art keywords
subframe
epdcch
subframe set
subframes
starting position
Prior art date
Legal status (The legal status 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 status listed.)
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Application number
PCT/CN2013/090973
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English (en)
Chinese (zh)
Inventor
戴博
苟伟
夏树强
韩晓钢
左志松
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ZTE Corp
Original Assignee
ZTE Corp
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Publication date
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Publication of WO2014180157A1 publication Critical patent/WO2014180157A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Definitions

  • the present invention relates to transmission technologies in the field of communications, and in particular, to a downlink control signaling transmission method and apparatus. Background technique
  • LTE Long Term Evolution
  • E-UTRA Evolved Universal Terrestrial Radio Access
  • 3GPP 3rd Generation Partnership Project
  • the base station can pass the Physical Downlink Control Channel (PDCCH) or the Enhanced Physical Downlink Control Channel (EPDCCH, Enhanced Physical Downlink Control).
  • PDCCH Physical Downlink Control Channel
  • EPDCCH Enhanced Physical Downlink Control
  • Channel or high-level configuration signaling for example, Radio Resource Control is referred to as RRC signaling or Medium Access Control for short MAC signaling
  • RRC signaling Radio Resource Control
  • DL grant downlink scheduling grant
  • UE User Equipment
  • an uplink grant grant (UL grant), where the UE acquires resources of a Physical Downlink Shared Channel (PDSCH) or a Physical Uplink Shared Channel (PUSCH).
  • the UE receives the PDSCH or sends the PUSCH according to the indication of the authorization signaling on the corresponding resource according to the downlink grant or the uplink grant (or the pre-configured downlink and uplink grant) obtained by the UE.
  • PDSCH Physical Downlink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • FIG. 1 shows the frame structure of the TDD mode. It can be found that the special subframe consists of three parts, which are respectively downlink pilots. DwPTS, Downlink Pilot Time Slot, GP, Guard Period and UpPTS (Uplink Pilot Time Slot) In the third part, the DwPTS can occupy the first three Orthogonal Frequency Division Multiplexing (OFDM) symbols in the subframe according to regulations.
  • OFDM Orthogonal Frequency Division Multiplexing
  • CRS is transmitted in the first three OFDM symbols of the foregoing subframe.
  • the resource partitioning in the subframe of LTE is described.
  • one subframe has a time length of 1 ms, and a short CP (Normal cyclic prefix) includes 14 OFDM symbols. A total of 12 OFDM symbols are included in the long CP ( Extended cyclic prefix).
  • the PDCCH and the EPDCCH are used to carry downlink control information (DCI, Downlink Control Information I LTE is initially used as the PDCCH.
  • DCI Downlink Control Information
  • I LTE is initially used as the PDCCH.
  • the following interference I may be used. : interference from the macro base station (Macro eNodeB) to the micro base station (Pico) and interference from the home eNodeB to the macro eNodeB.
  • LTE proposes multiple antennas based on user-specific pilots. The transmission method is used to solve the above interference problem.
  • mapping the PDCCH to the PDSCH region and adopting a frequency division multiplexing method similar to PDSCH multiplexing frequency domain coordination of inter-cell interference can be implemented. This enhanced PDCCH is called EPDCCH. .
  • the PDCCH is mapped to the first OFDM symbols of the subframe, and is mapped to the full bandwidth in the frequency domain.
  • the physical resources of the PDCCH transmission are in units of Control Channel Elements (CCEs), and the size of one CCE is 9.
  • CCEs Control Channel Elements
  • REG Resource Element Group
  • one REG includes 4 resource elements (Resource Element)
  • one PDCCH can occupy 1, 2, 4 or 8 CCEs, corresponding to four aggregation levels (Aggregation level).
  • the EPDCCH inherits the framework of the PDCCH design, the concept of CCE and REG aggregation, and only the specific aggregation level, the eCCE division, the definition of the eREG, and the resource location of the EPDCCH are replaced by a new resource region, where the frequency domain location corresponding to the ePDCCH is
  • the number of corresponding PRBs is 2, 4, 8, and the number of PRBs includes 16 eREGs.
  • 16 eREGs are divided into 4 eCCEs or 2 eCCEs, and eREGs are removed according to 1 PRB.
  • the time domain is divided into the time domain, as shown in Figure 2-4.
  • the ePDCCH transmission mode includes two types: a continuous transmission mode and a discrete transmission mode.
  • One eCCE corresponding to the continuous transmission mode is located in one PRB, and one eCCE is located in multiple PRBs.
  • the ePDCCH can be configured with one or two sets (set), two.
  • the set frequency domain location and the transmission mode are respectively configured by the base station, and the two sets are located on the same subframe set, and the subframe set corresponding to the ePDCCH is configured by the base station.
  • the time domain there is only one subframe set for transmitting the ePDCCH, and the starting OFDM symbols of the ePDCCH are the same in all subframes for transmitting the ePDCCH, the frequency domain locations are the same, and the PUCCH corresponding positions of the ePDCCH are the same.
  • the existing subframe types include an ABS subframe and a Non-ABS subframe. Since less data is transmitted on the ABS subframe, interference to neighboring cells can be reduced, and interference between cells is reduced by time domain interference coordination. Therefore, in order to avoid interference to the neighboring cell when the ePDCCH is transmitted on the ABS subframe, the starting OFDM symbol of the ePDCCH starts from the t-th OFDM symbol, t is greater than 1, and is configured by higher layer signaling, when the ePDCCH is in the Non-ABS When transmitting on a subframe, the starting OFDM symbol of the ePDCCH may start from the t-th OFDM symbol, or may be determined according to the PCFICH, thereby improving the use efficiency of the downlink resource.
  • NCT new carrier
  • the carrier has a distinctive feature, that is, it does not need to consider backward compatibility when designing, and more new technologies can be applied in it.
  • CRSs cell-specific reference signals
  • HetNet heterogeneous network
  • the DwPTS in the special subframe of the new carrier type occupies 3 OFDM symbols
  • the PDCCH cannot be transmitted
  • the first 3 OFDM symbols are not If there is a DMRS, the ePDCCH cannot be transmitted.
  • the scheduling information (downlink control information) of the uplink subframe corresponding to the DwPTS cannot be transmitted on the DwPTS, and the uplink subframe corresponding to the DwPTS cannot be scheduled.
  • the MBSFN is introduced in the new carrier type.
  • the unicast service and the multicast service are still in the form of time division multiplexing on the MBSFN subframe.
  • the unicast service on the MBSFN subframe occupies the previous OFDM symbol of the subframe, or the first two OFDM symbols.
  • the PDCCH and the ePDCCH cannot be transmitted because there is no CRS and DMRS, and the uplink subframe corresponding to the MBSFN subframe cannot be scheduled.
  • the main purpose of the embodiments of the present invention is to provide a downlink control signaling transmission method and apparatus, which solves the problem that resource utilization decreases due to different factor frame types.
  • a downlink control signaling transmission method comprising:
  • the k subframe sets are configured to transmit the ePDCCH, and the base station sends the ePDCCH according to configuration information corresponding to the subframe set in the subframe in which the ePDCCH is transmitted; where k is a positive integer greater than or equal to 2.
  • the method further includes: receiving, by the terminal, the ePDCCH according to configuration information corresponding to a subframe set in which the subframe of the ePDCCH is transmitted.
  • the configuration information includes at least one of the following:
  • a PRB includes the number of eCCEs
  • the aggregation level detected by the ePDCCH The mapping mode of the ePDCCH.
  • the manner of configuring the k subframe sets specifically includes at least one of the following: a subframe corresponding to the k subframe sets is separately configured by k signalings;
  • the subframes corresponding to the k subframe sets are divided in a predetermined manner.
  • the ePDCCH configuration information corresponding to the k subframe sets specifically includes the following at least signaling independent configuration
  • the configuration information of each subframe set is determined according to an agreed manner.
  • the sub-frames corresponding to the k subframes are divided according to the agreed manner, and specifically include: when there is no CRS transmission in the subframe, the MBSFN subframe that transmits the ePDCCH is used as the first subframe set, and the non-MBSFN subframe of the ePDCCH is transmitted as Second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set, and the other subframes are used as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set
  • the MBSFN subframe is used as the second subframe set
  • the remaining subframes are used as the third subframe set
  • the DwPTS includes only 3 OFDM symbols, and there is no CRS transmission in the subframe, the subframe in which the DwPTS is located and the MBSFN subframe are used as the first subframe set, and the remaining subframes are used as the second subframe. Or,
  • the molecular frame set is divided according to the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe;
  • the subframe type corresponding to the k subframe sets specifically includes at least one of the following: a DwPTS without CRS transmission and only including 3 OFDM symbols, an MBSFN subframe without CRS transmission, an ABS subframe without CRS transmission, and an ABS subframe a non-ABS subframe, a subframe in which a synchronization channel is transmitted, and a subframe in which a physical broadcast channel is transmitted;
  • Subframe 0 and subframe 5 are the first subframe set, and the remaining subframes are the second subframe set;
  • Subframe 0, subframe 4, subframe 5, and subframe 9 are the first subframe set, and the remaining subframes are the second subframe or
  • Subframe 0 and subframe 5 are the first subframe set
  • subframe 4 and subframe 9 are the second subframe set
  • the remaining subframes are the third subframe set.
  • the signaling independent configuration specifically includes: k subframes that transmit ePDCCH, and each subframe set corresponds to one signaling set;
  • the signaling set indicates at least one of the following information:
  • the configuration information of each subframe set determined according to the agreed manner specifically includes at least one of the following:
  • mapping mode of the ePDCCH The mapping mode of the ePDCCH.
  • Determining the time domain start location of the ePDCCH according to the agreed manner specifically includes: determining, according to the PCFICH, an ePDCCH start position of the ABS subframe set for transmitting the ePDCCH, where the ePDCCH start position of the APDCCH subframe set of the ePDCCH is transmitted Determined according to signaling;
  • the ePDCCH starting position of the non-ABS subframe set transmitting the ePDCCH is the first OFDM symbol of the subframe, and the ePDCCH starting position of the ABS subframe set transmitting the ePDCCH is determined according to signaling;
  • the ePDCCH starting position of the first subframe set is determined according to signaling, and the ePDCCH starting position of the second subframe set is the first OFDM symbol of the subframe;
  • the ePDCCH starting position of the first subframe set is determined according to signaling, and the ePDCCH starting position of the second subframe set is determined according to the PCFICH;
  • the starting position of the first subframe set is determined according to the PCFICH, and the ePDCCH starting position of the second subframe set is the first OFDM symbol of the subframe.
  • the determining the location of the ePDCCH frequency domain according to the agreed manner specifically includes: for a case where there is no CRS transmission in the subframe, the frequency domain location of the ePDCCH transmitted on the MBSFN subframe is according to the transmission ePDCCH frequency domain configured by signaling on the non-MBSFN subframe. Position determination or,
  • the frequency domain position of the ePDCCH transmitted on the special subframe including the 3 OFDM symbols in the DwPTS is determined according to the transmission ePDCCH frequency domain position configured by the signaling on the non-MBSFN subframe;
  • the frequency domain position of the ePDCCH of the first subframe set is determined according to signaling, and the frequency domain location of the ePDCCH of the second subframe set is determined according to the frequency domain position of the ePDCCH of the first subframe set.
  • the determining, by the agreed manner, the PUCCH starting location corresponding to the ePDCCH includes:
  • the subframe set is divided according to the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe, and the subframe group with the largest number of downlink subframes is configured to correspond to the PUCCH start position as Npucch, and the ePDCCH of other subframe sets.
  • the corresponding PUCCH start position is Npucch - Xi, i is a subframe set index, Xi is a predefined value corresponding to each subframe set, or, in the TDD system, the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe
  • the sub-frame set is divided, and the subframe set with the smallest number of downlink subframes is configured to correspond to the PUCCH start position as Npucch, and the ePDCCH corresponding to the other subframe set is the start position of the PUCCH is Npucch+Xi, where i is the subframe set index, Xi is A predefined value corresponding to each subframe set.
  • the determining the number of eCCEs included in the one PRB according to the agreed manner includes:
  • the number of eCCEs included in one PRB in the MBSFN subframe is two, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four; or
  • the number of eCCEs included in one PRB in the MBSFN subframe is one, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four.
  • the unicast service and the multicast service on the MBSFN subframe adopt a time division multiplexing manner;
  • the number of eCCEs included in one PRB of the special subframes including the three OFDM symbols in the DwPTS is two, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four.
  • the number of eCCEs included in one PRB of the special subframes including the three OFDM symbols in the DwPTS is one, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four.
  • the determining the aggregation level of the ePDCCH according to the agreed manner includes: when there is no CRS transmission in the subframe, the aggregation level of the ePDCCH in the MBSFN subframe is 2, 4, 8, 16, or 2, 4, 8, 16, 32 or 4, 8, 16, 32 or 1, 2, 4, 8;
  • the aggregation level of the ePDCCH in the special subframe including 3 OFDM symbols in the DwPTS is 2, 4, 8, 16, or 2, 4, 8, 16, 32 or 4, 8, 16, 32 or 1, 2, 4, 8.
  • the ePDCCH is transmitted on the first n OFDM symbols of the subframe according to the PDCCH, and the frequency domain location is a signaling configuration;
  • the ePDCCH is transmitted on the first n OFDM symbols of the subframe according to the PDCCH, and the frequency domain location is a signaling configuration.
  • a downlink control signaling transmission device the device is located at the base station side, including a configuration unit, and Delivery unit;
  • the configuration unit is configured to configure k subframe sets to be used for transmitting ePDCCH, where k is a positive integer greater than or equal to 2;
  • the sending unit is configured to send the ePDCCH according to configuration information corresponding to a subframe set in which the subframe in which the ePDCCH is transmitted.
  • the configuration unit and said transmitting unit, when executing the processing, the central processor may be used (CPU, Central Processing Unit), a digital signal processor (DSP, Digital Singnal Processor) or a programmable logic array bad 1 J (FPGA, Field - Programmable Gate Array ) implementation.
  • CPU Central Processing Unit
  • DSP Digital Singnal Processor
  • FPGA Field - Programmable Gate Array
  • the configuration information includes at least one of the following:
  • a PRB includes the number of eCCEs
  • mapping mode of the ePDCCH The mapping mode of the ePDCCH.
  • the configuration unit includes: a subframe set dividing subunit;
  • the sub-frame set dividing sub-unit is configured to configure a partitioning manner of the k subframe sets, and the manner of configuring the k subframe sets specifically includes at least one of the following:
  • the subframe corresponding to the k subframe sets is separately configured by k signalings
  • the subframes corresponding to the k subframe sets are divided in a predetermined manner.
  • the configuration unit further includes: an information configuration subunit;
  • the information configuration sub-unit is configured to configure the ePDCCH configuration information corresponding to the k subframe sets, and the ePDCCH configuration information corresponding to the k subframe sets specifically includes at least one of the following:
  • the configuration information of each subframe set is determined according to an agreed manner.
  • the sub-frame set sub-unit is further configured to: when the sub-frames corresponding to the k sub-frame sets are divided according to the agreed manner, specifically:
  • the MBSFN subframe of the ePDCCH is transmitted as the first subframe set, and the non-MBSFN subframe of the ePDCCH is transmitted as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set, and the other subframes are used as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set
  • the MBSFN subframe is used as the second subframe set
  • the remaining subframes are used as the third subframe set
  • the DwPTS includes only three OFDM symbols, and there is no CRS transmission in the subframe, the subframe in which the DwPTS is located and the MBSFN subframe are used as the first subframe set, and the remaining subframes are used as the second subframe or
  • the molecular frame set is divided according to the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe;
  • the subframe type corresponding to the k subframe sets specifically includes at least one of the following: a DwPTS without CRS transmission and including only 3 OFDM symbols, an MBSFN subframe without CRS transmission, An ABS subframe, an ABS subframe, a non-ABS subframe, a subframe transmitting a synchronization channel, and a subframe transmitting a physical broadcast channel without CRS transmission;
  • Subframe 0 and subframe 5 are the first subframe set, and the remaining subframes are the second subframe set;
  • Subframe 0, subframe 4, subframe 5, and subframe 9 are the first subframe set, and the remaining subframes are the second subframe or
  • Subframe 0 and subframe 5 are the first subframe set
  • subframe 4 and subframe 9 are the second subframe set
  • the remaining subframes are the third subframe set.
  • the information configuration sub-unit is further configured to be configured by the signaling, and specifically includes: k subframes that transmit the ePDCCH, where each subframe set corresponds to one signaling set;
  • the signaling set indicates at least one of the following information:
  • the information configuration sub-unit is further configured to determine the configuration information of each sub-frame set according to an agreed manner, and specifically includes at least one of the following:
  • mapping mode of the ePDCCH The mapping mode of the ePDCCH.
  • the information configuration subunit is further configured to determine the manner according to an agreed manner.
  • the time domain start position of the ePDCCH is specifically included:
  • the ePDCCH start position of the non-ABS subframe set for transmitting the ePDCCH is determined according to the PCFICH, and the ePDCCH start position of the ABS subframe set for transmitting the ePDCCH is determined according to signaling;
  • the ePDCCH starting position of the non-ABS subframe set transmitting the ePDCCH is the first OFDM symbol of the subframe, and the ePDCCH starting position of the ABS subframe set transmitting the ePDCCH is determined according to signaling;
  • the ePDCCH starting position of the first subframe set is determined according to signaling, and the ePDCCH starting position of the second subframe set is the first OFDM symbol of the subframe;
  • the ePDCCH starting position of the first subframe set is determined according to signaling, and the ePDCCH starting position of the second subframe set is determined according to the PCFICH;
  • the starting position of the first subframe set is determined according to the PCFICH, and the ePDCCH starting position of the second subframe set is the first OFDM symbol of the subframe.
  • the information configuration sub-unit is further configured to: when determining the location of the ePDCCH frequency domain according to an agreed manner, specifically:
  • the frequency domain location of the ePDCCH transmitted on the MBSFN subframe is determined according to the transmission ePDCCH frequency domain position configured by the signaling on the non-MBSFN subframe;
  • the frequency domain position of the ePDCCH transmitted on the special subframe including the 3 OFDM symbols in the DwPTS is determined according to the transmission ePDCCH frequency domain position configured by the signaling on the non-MBSFN subframe; or,
  • the frequency domain position of the ePDCCH of the first subframe set is determined according to signaling, and the frequency domain location of the ePDCCH of the second subframe set is determined according to the frequency domain position of the ePDCCH of the first subframe set.
  • the information configuration sub-unit further configured to determine the PUCCH start location corresponding to the ePDCCH according to the agreed manner, specifically includes:
  • the subframe set is divided according to the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe, and the subframe group with the largest number of downlink subframes is configured to correspond to the PUCCH start position as Npucch, and the ePDCCH of other subframe sets.
  • the corresponding PUCCH start position is Npucch _ Xi, i is a subframe set index, Xi is a predefined value corresponding to each subframe set, or, in the TDD system, the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe
  • the sub-frame set is divided, and the subframe set with the smallest number of downlink subframes is configured to correspond to the PUCCH start position as Npucch, and the ePDCCH corresponding to the other subframe set is the start position of the PUCCH is Npucch+Xi, where i is the subframe set index, Xi is A predefined value corresponding to each subframe set.
  • the information configuration sub-unit is further configured to determine, according to the agreed manner, the number of eCCEs included in the one PRB, which specifically includes:
  • the number of eCCEs included in one PRB in the MBSFN subframe is two, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four; or
  • the number of eCCEs included in one PRB in the MBSFN subframe is one, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four;
  • multicast services are time-multiplexed;
  • the number of eCCEs included in one PRB of the special subframe including 3 OFDM symbols in the DwPTS is 2, and one PRB in the non-MBSFN subframe includes The number of eCCEs is 2 or 4;
  • the number of eCCEs included in one PRB of the special subframes including the three OFDM symbols in the DwPTS is one, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four.
  • the information configuration sub-unit is further configured to: when determining the aggregation level of the ePDCCH according to the agreed manner, specifically:
  • the aggregation level of the ePDCCH in the MBSFN subframe is 2, 4, 8, 16, or 2, 4, 8, 16, 32, or 4, 8, 16, 32, 1, 2, 4, 8;
  • the aggregation level of the ePDCCH in the special subframe including 3 OFDM symbols in the DwPTS is 2, 4, 8, 16, or 2, 4, 8, 16, 32 or 4, 8, 16, 32 or 1, 2, 4, 8.
  • the configuration information sub-unit is further configured to: when determining the mapping manner of the ePDCCH according to an agreed manner, specifically:
  • the ePDCCH is transmitted on the first n OFDM symbols of the subframe according to the PDCCH, and the frequency domain location is a signaling configuration
  • the ePDCCH is transmitted on the first n OFDM symbols of the subframe according to the PDCCH, and the frequency domain location is a signaling configuration.
  • a downlink control signaling transmission device where the device is located at the terminal side, and includes a configuration acquiring unit and a receiving unit;
  • the configuration acquiring unit is configured to acquire a subframe set corresponding to a subframe in which the ePDCCH is transmitted. Configuration information; wherein, the subframe set is used as a set of k subframes for transmitting ePDCCH, and k is a positive integer greater than or equal to 2;
  • the receiving unit is configured to receive the ePDCCH according to configuration information corresponding to a subframe set in which a subframe in which the ePDCCH is transmitted.
  • the configuration unit and the receiving unit, when executing the processing, the central processor may be used (CPU, Central Processing Unit), a digital signal processor (DSP, Digital Singnal Processor) or a programmable logic array bad 1 J (FPGA, Field - Programmable Gate Array ) implementation.
  • CPU Central Processing Unit
  • DSP Digital Singnal Processor
  • FPGA Field - Programmable Gate Array
  • the configuration information includes at least one of the following:
  • a PRB includes the number of eCCEs
  • mapping mode of the ePDCCH The mapping mode of the ePDCCH.
  • the configuration obtaining unit includes: a subframe set partitioning obtaining subunit;
  • the sub-frame set partitioning sub-unit is configured to obtain a partitioning manner for configuring the k-subframe sets, and the manner of configuring the k sub-frame sets specifically includes at least one of the following:
  • the subframe corresponding to the k subframe sets is separately configured by k signalings
  • the subframes corresponding to the k subframe sets are divided in a predetermined manner.
  • the configuration obtaining unit includes: an information configuration acquiring subunit;
  • the information configuration acquisition sub-unit is configured to acquire the ePDCCH configuration information corresponding to the k subframe sets, and the ePDCCH configuration information corresponding to the k subframe sets specifically includes at least one of the following: independently configured by signaling;
  • the sub-frame set-dividing sub-unit is further configured to: when the sub-frame corresponding to the k-sub-frame set is divided according to the agreed manner, specifically including at least one of the following:
  • the MBSFN subframe of the ePDCCH is transmitted as the first subframe set, and the non-MBSFN subframe of the ePDCCH is transmitted as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set, and the other subframes are used as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set
  • the MBSFN subframe is used as the second subframe set
  • the remaining subframes are used as the third subframe set
  • the DwPTS includes only three OFDM symbols, and there is no CRS transmission in the subframe, the subframe in which the DwPTS is located and the MBSFN subframe are used as the first subframe set, and the remaining subframes are used as the second subframe or
  • the molecular frame set is divided according to the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe;
  • the subframe type corresponding to the k subframe sets specifically includes at least one of the following: a DwPTS without CRS transmission and only including 3 OFDM symbols, an MBSFN subframe without CRS transmission, an ABS subframe without CRS transmission, and an ABS subframe , non-ABS subframes, sub-carriers of the transmission synchronization channel a frame, a subframe in which a physical broadcast channel is transmitted;
  • Subframe 0 and subframe 5 are the first subframe set, and the remaining subframes are the second subframe set;
  • Subframe 0, subframe 4, subframe 5, and subframe 9 are the first subframe set, and the remaining subframes are the second subframe or
  • Subframe 0 and subframe 5 are the first subframe set
  • subframe 4 and subframe 9 are the second subframe set
  • the remaining subframes are the third subframe set.
  • the configuration information acquiring sub-unit is further configured to: when acquiring the configuration information of each subframe set independently configured by the signaling, specifically: the k subframes that transmit the ePDCCH, and each subframe set corresponds to one signaling set. ;
  • the signaling set indicates at least one of the following information:
  • the information configuration acquisition sub-unit is further configured to: when the configuration information of each subframe set is determined according to the agreed manner, specifically including at least one of the following:
  • mapping mode of the ePDCCH The mapping mode of the ePDCCH.
  • the information configuration acquiring subunit is further configured to acquire according to an agreed manner
  • the method specifically includes:
  • the ePDCCH start position of the non-ABS subframe set for transmitting the ePDCCH is determined according to the PCFICH, and the ePDCCH start position of the ABS subframe set for transmitting the ePDCCH is determined according to signaling;
  • the ePDCCH starting position of the non-ABS subframe set transmitting the ePDCCH is the first OFDM symbol of the subframe, and the ePDCCH starting position of the ABS subframe set transmitting the ePDCCH is determined according to signaling;
  • the ePDCCH starting position of the first subframe set is determined according to signaling, and the ePDCCH starting position of the second subframe set is the first OFDM symbol of the subframe;
  • the ePDCCH starting position of the first subframe set is determined according to signaling, and the ePDCCH starting position of the second subframe set is determined according to the PCFICH;
  • the starting position of the first subframe set is determined according to the PCFICH, and the ePDCCH starting position of the second subframe set is the first OFDM symbol of the subframe.
  • the information configuration acquisition sub-unit is further configured to: when the location of the ePDCCH frequency domain is determined according to an agreed manner, specifically:
  • the frequency domain location of the ePDCCH transmitted on the MBSFN subframe is determined according to the transmission ePDCCH frequency domain position configured by the signaling on the non-MBSFN subframe;
  • the frequency domain position of the ePDCCH transmitted on the special subframe including the 3 OFDM symbols in the DwPTS is determined according to the transmission ePDCCH frequency domain position configured by the signaling on the non-MBSFN subframe; or,
  • the frequency domain position of the ePDCCH of the first subframe set is determined according to signaling, and the frequency domain location of the ePDCCH of the second subframe set is determined according to the frequency domain position of the ePDCCH of the first subframe set.
  • the information configuration acquisition sub-unit is further configured to: when the PUCCH start location corresponding to the ePDCCH is determined according to the agreed manner, specifically:
  • the subframe set is divided according to the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe, and the subframe group with the largest number of downlink subframes is configured to correspond to the PUCCH start position as Npucch, and the ePDCCH of other subframe sets.
  • the corresponding PUCCH start position is Npucch _ Xi, i is a subframe set index, Xi is a predefined value corresponding to each subframe set, or, in the TDD system, the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe
  • the sub-frame set is divided, and the subframe set with the smallest number of downlink subframes is configured to correspond to the PUCCH start position as Npucch, and the ePDCCH corresponding to the other subframe set is the start position of the PUCCH is Npucch+Xi, where i is the subframe set index, Xi is A predefined value corresponding to each subframe set.
  • the information configuration acquisition sub-unit is further configured to: when determining the number of eCCEs included in the one PRB according to the agreed manner, specifically:
  • the number of eCCEs included in one PRB in the MBSFN subframe is two, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four; or
  • the number of eCCEs included in one PRB in the MBSFN subframe is one, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four;
  • multicast services are time-multiplexed;
  • the number of eCCEs included in one PRB of the special subframe including 3 OFDM symbols in the DwPTS is 2, and one PRB in the non-MBSFN subframe includes The number of eCCEs is 2 or 4;
  • the number of eCCEs included in one PRB of the special subframes including the three OFDM symbols in the DwPTS is one, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four.
  • the information configuration acquisition sub-unit is further configured to: when the aggregation level of the ePDCCH is determined according to the agreed manner, specifically:
  • the aggregation level of the ePDCCH in the MBSFN subframe is 2, 4, 8, 16, or 2, 4, 8, 16, 32, or 4, 8, 16, 32, 1, 2, 4, 8;
  • the aggregation level of the ePDCCH in the special subframe including the 3 OFDM symbols in the DwPTS is 2, 4, 8, 16, or 2, 4, 8, 16, 32, or 4, 8. 16, 32 or 1, 2, 4, 8.
  • the configuration information obtaining sub-unit further configured to: when determining the mapping manner of the ePDCCH according to the agreed manner, specifically includes:
  • the ePDCCH is transmitted on the first n OFDM symbols of the subframe according to the PDCCH, and the frequency domain location is a signaling configuration
  • the ePDCCH is transmitted on the first n OFDM symbols of the subframe according to the PDCCH, and the frequency domain location is a signaling configuration.
  • the method includes configuring a k subframe set to transmit an ePDCCH, and the base station sends the ePDCCH according to configuration information corresponding to a subframe set in which the subframe of the ePDCCH is transmitted; where k is a positive integer greater than or equal to.
  • the embodiment of the present invention introduces a subframe set, and since the k subframe sets are configured to be used for transmitting the ePDCCH, The eNodeB sends the ePDCCH according to the configuration information corresponding to the subframe set in which the subframe of the ePDCCH is transmitted, so that the terminal receives the ePDCCH according to the configuration information corresponding to the subframe set in which the subframe of the ePDCCH is transmitted. Therefore, according to the embodiment of the present invention, Solve the problem of resource utilization degradation caused by different sub-frame types. DRAWINGS
  • 1 is a schematic diagram of a structure of an existing LTE frame
  • FIG. 2 is a schematic diagram of a newly added reference signal on the first two OFDM symbols in a subframe on the NCT
  • FIG. 3 is another schematic diagram of a newly added reference signal on the first two OFDM symbols in a subframe on the NCT
  • 4 is still another schematic diagram of newly adding reference signals on the first two OFDM symbols in a subframe on the NCT;
  • FIG. 5 is a flowchart of implementing a method principle according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of PDCCH transmission on the NCT. detailed description
  • the subframe is set, and the e-PDCCH is transmitted according to the configuration information corresponding to the subframe set in the subframe in which the ePDCCH is transmitted, so that the terminal transmits the ePDCCH according to the configuration information corresponding to the subframe set in which the subframe of the ePDCCH is transmitted.
  • the configuration information corresponding to the subframe set in which the frame is located receives the ePDCCH.
  • a downlink control signaling transmission method includes:
  • Step 101 Configure k subframe sets on the base station side to transmit the ePDCCH.
  • k is a positive integer greater than or equal to 2.
  • Step 102 The base station sends the ePDCCH according to configuration information corresponding to a subframe set in which the subframe in which the ePDCCH is transmitted.
  • the subframe set herein may also be referred to as a subframe type, and after the subframe set is introduced, different subframe sets represent different subframe types.
  • the configuration information includes at least one of the following:
  • a PRB includes the number of eCCEs
  • mapping mode of the ePDCCH The mapping mode of the ePDCCH.
  • a downlink control signaling transmission method further comprising receiving, by the terminal side, the ePDCCH according to configuration information corresponding to a subframe set in which the subframe of the ePDCCH is transmitted.
  • the subframe set is used as a set of k subframes for transmitting an ePDCCH, and k is a positive integer greater than or equal to 2;
  • the configuration information includes at least one of the following:
  • a PRB includes the number of eCCEs
  • mapping mode of the ePDCCH The mapping mode of the ePDCCH.
  • the definition of the subframe set is equivalent to defining a plurality of custom subframe types, and different subframe sets correspond to different custom subframe types, and different custom subframe types need to redefine configuration information.
  • the base station is used as the master device, and the terminal is configured as a master-slave system that is configured from the base station side.
  • the terminal functions as a master device, and the base station functions as a slave device.
  • the subframe set configuration and transmission in the embodiment of the present invention is not limited to the master-slave system architecture described herein, and may also be applied to the base station or the terminal independently.
  • the technical solutions related to the configuration and transmission of the subframe set are all within the protection scope of the embodiment of the present invention.
  • the embodiment of the present invention is directed to the scenario of the downlink control signaling transmission in the special scenario, and the effect of ensuring the uplink resource scheduling, fully utilizing the downlink resources, and providing the terminal detection efficiency, and adopting the embodiment of the present invention to solve at least the prior art.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the k-subframe set is used to transmit the ePDCCH, and the ePDCCH configuration information corresponding to the k subframe sets is independently configured.
  • the configuration information includes at least one of the following: a time domain start position of the ePDCCH, a frequency domain set number corresponding to the ePDCCH, and each set. Corresponding transmission mode and frequency domain location, the PUCCH start location corresponding to the ePDCCH, one resource block including the number of eCCEs, the aggregation level of the ePDCCH detection, and the mapping manner of the ePDCCH; k is a positive integer.
  • the mapping manner of the ePDCCH includes at least one of the following: ePDCCH is mapped according to the PDCCH mode, and the existing mode is mapped, and the configuration mode mapping is newly added.
  • the base station transmits the ePDCCH according to configuration information corresponding to a subframe set in which the subframe of the ePDCCH is transmitted;
  • the priority value of k is 2 or 3;
  • the manner of dividing the subframe set specifically includes:
  • Mode 1 The subframe corresponding to the k subframe sets is represented by k signaling respectively;
  • 40 bits correspond to 40 sub-40ms a frame, which indicates, by two such signaling, which subframes belong to the first subframe set within 40 ms, and which subframes belong to the second subframe set, where two subframe sets have no subframe overlap; or, a 40 bit The signaling indicates which subframes belong to the first subframe set within 40 ms, and the remaining subframes belong to the second subframe set; or, 40-bit signaling indicates which subframes within 40 ms belong to the ePDCCH subframe, and then a 40-bit letter And indicating, in the ePDCCH subframe set, which subframes belong to the first subframe set, and the remaining subframes in the ePDCCH subframe set belong to the second subframe set;
  • Manner 2 The subframes corresponding to the k subframe sets are divided according to the agreed manner, and specifically include at least one of the following:
  • the MBSFN subframe of the ePDCCH is transmitted as the first subframe set, and the non-MBSFN subframe of the ePDCCH is transmitted as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set, and the other subframes are used as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set, the other MBSFN subframes are used as the second subframe set, and the remaining subframes are used as the third subframe set. ;
  • the downlink subframes are divided according to the number of downlink subframes in the downlink subframe corresponding to the uplink subframe, for example, all uplink corresponding downlink subframes with the number of downlink subframes in the downlink subframe corresponding to the uplink subframe are 1.
  • All the downlink sub-frames included in the downlink sub-frame window corresponding to the uplink sub-frame are all the downlink sub-frames of all the uplink sub-frames corresponding to the second sub-frame set. All the downlink subframes included in the downlink subframes of the downlink subframes corresponding to the uplink subframe are all the third subframes, and the downlink subframes corresponding to the uplink subframes are downlink.
  • All the downlink subframes included in the downlink sub-frames of all the uplinks of the subframes are the fourth subframe set, and all the downlink corresponding sub-frames of the downlink subframes of the uplink subframe are 9 All the downlink subframes included in the frame window are the ninth subframe set; or all the downlink subframes included in the downlink subframes of the uplink subframes corresponding to the uplink subframe are all downlink subframes One A frame set, the remainder being the second set of subframes;
  • the subframe type corresponding to the k subframe sets specifically includes at least one of the following: a DwPTS without CRS transmission and only including 3 OFDM symbols, an MBSFN subframe without CRS transmission, an ABS subframe without CRS transmission, and an ABS subframe a non-ABS sub-frame, a sub-frame for transmitting a synchronization channel, and a sub-frame for transmitting a physical broadcast channel; wherein each sub-frame type corresponds to only one sub-frame set, and different sub-frame types may correspond to different sub-frame sets, or may be multiple sub-frames.
  • the frame type corresponds to the same subframe set;
  • Subframe 0 and subframe 5 are the first subframe set, and the remaining subframes are the second subframe set;
  • Subframe 0, subframe 4, subframe 5, and subframe 9 are the first subframe set, and the remaining subframes are the second subframe or
  • Subframe 0 and subframe 5 are the first subframe set, and subframe 4 and subframe 9 are the second subframe set, and the remaining The subframe is a third subframe set;
  • the sequence of the foregoing subframe sets and the subframes may be arbitrarily exchanged, for example, when there is no CRS transmission in the subframe, the MBSFN subframe of the ePDCCH is transmitted as the second subframe set, and the non-MBSFN subframe of the ePDCCH is transmitted as the first subframe.
  • Set, or, subframe 0, subframe 4, subframe 5, and subframe 9 are second subframe sets, and remaining subframes are first subframe sets, and the like;
  • Mode 3 Mode 1 and Mode 2 are combined.
  • the signaling configuration is adopted.
  • the agreed-upon mode is adopted.
  • the scenario without CRS adopts the agreed mode
  • the scenario with CRS adopts signaling configuration.
  • the protocol mode is adopted for the MBSFN sub-frame scenario, and the signaling mode is used for other scenarios.
  • some subframe sets are configured by signaling, and some subframe sets adopt a predetermined manner, such as: MBSFN subframe is the first a subframe set, the second subframe set is configured by signaling, or the first subframe set is configured by signaling, and the second subframe set is included when the DwPTS includes three OFDM symbols, or the first subframe is the MBSFN subframe.
  • the DwPTS includes a third subframe set when three OFDM symbols are included, and a third subframe set is configured by signaling, or the first subframe set is configured by signaling, and the second subframe set is determined by an agreed manner.
  • the configuration information of the ePDCCH of the k subframe sets is independently configured, and specifically includes: mode 4: being independently configured by signaling;
  • the method includes: k sets of subframes for transmitting ePDCCH, each subframe set corresponding to one signaling set, where the signaling set indicates at least one of the following: a start time position of the ePDCCH, a quantity of the frequency domain set corresponding to the ePDCCH, and a transmission mode and a frequency domain position corresponding to each set, and a PUCCH start position corresponding to the ePDCCH;
  • Method 5 determining configuration information of each subframe set according to an agreed manner
  • the agreed manner specifically includes at least one of the following:
  • the ePDCCH start position of the set of non-ABS subframes transmitting the ePDCCH is determined according to the PCFICH, and the ePDCCH start position root of the set of ABS subframes transmitting the ePDCCH Determined by signaling, or
  • the ePDCCH start position of the set of non-ABS subframes transmitting the ePDCCH is the first OFDM symbol of the subframe, and the ePDCCH start position of the set of ABS subframes transmitting the ePDCCH is determined according to signaling, Or,
  • the starting position of the first subframe set is determined according to signaling, and the starting position of the second subframe set is the first OFDM symbol of the subframe;
  • the ePDCCH starting position of the first subframe set is determined according to signaling, and the ePDCCH starting position of the second subframe set is determined according to the PCFICH; or
  • the starting position of the first subframe set is determined according to the PCFICH, and the ePDCCH starting position of the second subframe set is the first OFDM symbol of the subframe.
  • the frequency domain location of the ePDCCH transmitted on the MBSFN subframe is determined according to the transmission ePDCCH frequency domain location configured by the signaling on the non-MBSFN subframe, and specifically includes: if the frequency of the ePDCCH is transmitted on the non-MBSFN subframe The domain location is the consecutive h PRBs starting from the PRB index M.
  • the frequency domain location of the ePDCCH transmitted on the MBSFN subframe is consecutive h XN PRBs starting from the PRB index M; if the frequency domain of the ePDCCH is transmitted on the non-MBSFN subframe
  • the location is a discrete number of h PRBs, for example: the index is M1, M2 Mh PRB, and the frequency domain location of the ePDCCH transmitted on the MB's MBSFN subframe is index M1, M1+1
  • the frequency domain of the ePDCCH transmitted on the MBSFN subframe is the PRB index of all the PRBs included in the resource block group (RBG) of the M1, M2, ..., and Mh, where the index is the PRB of the M1, M2, and Mh;
  • the unicast service and the multicast service on the MBSFN subframe adopt a time division multiplexing manner; or,
  • the frequency domain location of the ePDCCH transmitted on the special subframe including the 3 OFDM symbols in the DwPTS is determined according to the transmission ePDCCH frequency domain position configured by the signaling on the general subframe (non-MBSFN subframe). Specifically, if the frequency domain location of the ePDCCH transmitted on the general subframe is consecutive h PRBs starting from the PRB index M, the frequency domain location of the ePDCCH transmitted on the special subframe including the 3 OFDM symbols in the DwPTS is the PRB index.
  • the DwPTS includes three special OFDM symbols.
  • the frequency domain position of the ePDCCH transmitted on the frame is a PRB whose index is M1, Ml+1 Ml+N-1, M2 Mh, Mh+1 Mh+N-1, where if there is a repetition, it is ignored, or if a general subframe
  • the frequency domain location of the ePDCCH is a discrete number of PRs, for example, the PRB of the index M1, M2 Mh, and the frequency domain location of the ePDCCH transmitted on the special subframe including the 3 OFDM symbols in the DwPTS is the PRB index.
  • M2 Mh corresponding resources Groups (RBGs) comprises all of PRB;
  • N is a positive integer, priority 2,3,4;
  • the frequency domain location of the ePDCCH of the first subframe set is determined according to signaling, and the frequency domain location of the ePDCCH of the second subframe set is determined according to the frequency domain position of the ePDCCH of the first subframe set;
  • the subframe set is divided according to the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe, and the subframe set with the largest number of downlink subframes is corresponding to the PUCCH start position Npucch, and the ePDCCH corresponding to the other subframe sets is corresponding.
  • the PUCCH start position is determined by Npucch - Xi, the i subframe set index, and Xi is a predefined value corresponding to each subframe set;
  • the subframe set is divided according to the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe, and the subframe set with the least number of downlink subframes is configured to correspond to the PUCCH start position as Npucch, and the ePDCCH of other subframe sets.
  • the corresponding PUCCH start position is Npucch+Xi, where i is a subframe set index, and Xi is a predefined value corresponding to each subframe set;
  • the number of eCCEs included in one PRB in the MBSFN subframe is two, and the number of eCCEs included in one PRB according to the existing standard is 2 or 4; or, when the subframe is When there is no CRS transmission, the number of eCCEs included in one PRB in the MBSFN subframe is one.
  • the number of eCCEs included in a PRB is defined as 2 or 4 according to the existing standard.
  • Service and multicast services are time-multiplexed;
  • the number of eCCEs included in one PRB of the special subframe including 3 OFDM symbols in the DwPTS is 2.
  • the general subframe (non-MBSFN subframe) defines an eCCE included in the PRB according to the existing standard. The number is 2 or 4; or, when there is no CRS transmission in the subframe, the number of eCCEs included in one PRB of the special subframe including 3 OFDM symbols in the DwPTS is 1, and the general subframe (non-MBSFN subframe) According to the existing standards, the number of eCCEs included in a PRB is 2 or 4;
  • the aggregation level of the ePDCCH in the MBSFN subframe is 2, 4, 8, 16, or 2, 4, 8, 16, 32 or 4, 8, 16, 32, and the non-MBSFN subframe is in accordance with the current
  • the unicast service and the multicast service on the MBSFN subframe adopt a time division multiplexing manner;
  • the aggregation level of the ePDCCH in the special subframe including 3 OFDM symbols in the DwPTS is 2, 4, 8, 16, or 2, 4, 8, 16, 32 or 4, 8, 16, 32.
  • the general subframe defines an aggregation level of the ePDCCH according to an existing standard.
  • the aggregation level of the ePDCCH in the special subframe including the 3 OFDM symbols in the DwPTS is 1.
  • 2, 4, 8, general subframes define the aggregation level of ePDCCH according to existing standards;
  • the number of eCCEs included in the foregoing one PRB and the aggregation level of the ePDCCH may be jointly configured or configured separately.
  • the joint configuration is as follows: When the number of eCCEs included in one PRB is 1, the aggregation level of the ePDCCH is 1. 2, 4, 8; or, when the number of eCCEs included in one PRB is 2, the aggregation level of the ePDCCH is 2, 4, 8, 16, or 2, 4, 8, 16, 32; or, when a PRB When the number of eCCEs included is 4, the aggregation level of the ePDCCH is 4, 8, 16, and 32.
  • the DwPTS When there is no CRS transmission in the subframe, the DwPTS includes a special subframe of 3 OFDM symbols, or an MBSFN subframe (a unicast service and a multicast service on the MBSFN subframe adopt a time division multiplexing manner), and the ePDCCH is according to the PDCCH.
  • the mode is transmitted on the first n OFDM symbols of the subframe, and the frequency domain location is a signaling configuration, that is, the downlink control signaling is transmitted according to the PDCCH structure in the first n OFDM symbols of the subframe, and the frequency domain location of the signaling configuration.
  • the CRS is transmitted in the frequency domain position of the signaling configuration instead of the full bandwidth transmission, thereby reducing the interference of the CRS and the PDCCH to other cells.
  • the PCFICH and the PHICH may also be transmitted in the frequency domain location; or, the foregoing scenario is new. Configuration information (including newly defined eCCE or eREG) mappings;
  • the configuration information is determined by using signaling configuration. In some scenarios, the configuration information is determined by a predetermined method. Alternatively, some subframe sets are determined by signaling configuration. Configuration information, some subframe sets determine the configuration information in a contracted manner.
  • Embodiment 2 :
  • the k-subframe set is used to transmit the ePDCCH, and the ePDCCH configuration information corresponding to the k subframe sets is independently configured.
  • the configuration information includes at least one of the following: a time domain start position of the ePDCCH, a frequency domain set number corresponding to the ePDCCH, and each set. Corresponding transmission mode and frequency domain location, the PUCCH start location corresponding to the ePDCCH, one resource block including the number of eCCEs, the aggregation level of the ePDCCH detection, and the mapping manner of the ePDCCH; k is a positive integer greater than or equal to 2;
  • the base station transmits the ePDCCH according to configuration information corresponding to the subframe set that is transmitted in the subframe of the ePDCCH;
  • the manner of dividing the subframe set specifically includes:
  • Mode 1 The subframe corresponding to the k subframe sets is represented by k signaling respectively;
  • a 40 ms periodic bitmap is used, and 40 bits correspond to 40 subframes within 40 ms.
  • Two such signalings respectively indicate which subframes belong to the first subframe set within 40 ms, and which subframes belong to the second subframe set. , wherein two subframe sets have no subframe overlap;
  • the configuration information of the ePDCCH of the k subframe sets is independently configured, and specifically includes: mode 4: being independently configured by signaling;
  • the k subframes of the ePDCCH are transmitted, and each subframe set corresponds to one signaling set, where the signaling set indicates at least one of the following: a time domain start position of the ePDCCH, a frequency domain set number corresponding to the ePDCCH, and a transmission mode and a frequency domain position corresponding to each set, and a PUCCH start position corresponding to the ePDCCH;
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the terminal receives the ePDCCH according to the configuration information corresponding to the subframe set that is transmitted in the subframe of the ePDCCH, where the number of the subframe set is greater than or equal to 2, and the ePDCCH configuration information corresponding to the subframe set is independently configured, and the configuration information is configured.
  • the at least one of the following includes: a start time position of the ePDCCH, a number of frequency domain sets corresponding to the ePDCCH, and a transmission mode and a frequency domain position corresponding to each set, a PUCCH start position corresponding to the ePDCCH, and one resource block including the number of eCCEs, ePDCCH The detected aggregation level and the mapping mode of the ePDCCH;
  • the manner of dividing the subframe set specifically includes:
  • Mode 1 The subframe corresponding to the k subframe sets is represented by k signaling respectively;
  • a 40 ms periodic bitmap is used, and 40 bits correspond to 40 subframes within 40 ms.
  • Two such signalings respectively indicate which subframes belong to the first subframe set within 40 ms, and which subframes belong to the second subframe set. , wherein two subframe sets have no subframe overlap;
  • the configuration information of the ePDCCH of the k subframe sets is independently configured, and specifically includes: mode 4: being independently configured by signaling;
  • each subframe set corresponds to one signaling set, where the signaling set indicates at least one of the following: a time domain start position of the ePDCCH, a frequency domain set number corresponding to the ePDCCH, and The transmission mode and frequency domain position corresponding to each set;
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the k-subframe set is used to transmit the ePDCCH, and the ePDCCH configuration information corresponding to the k subframe sets is independently configured.
  • the configuration information includes at least one of the following: a time domain start position of the ePDCCH, a frequency domain set number corresponding to the ePDCCH, and each set. Corresponding transmission mode and frequency domain location, the PUCCH start position corresponding to the ePDCCH, one resource block including the number of eCCEs, and the aggregation level detected by the ePDCCH; k is a positive integer greater than or equal to 2;
  • the base station transmits the ePDCCH according to configuration information corresponding to the subframe set that is transmitted in the subframe of the ePDCCH;
  • the terminal receives the ePDCCH according to the configuration information corresponding to the subframe set that is transmitted in the subframe of the ePDCCH, where the number of the subframe set is greater than or equal to 2, and the ePDCCH configuration information corresponding to the subframe set is independently configured, and the configuration information is configured. And including at least one of the following: a time domain start position of the ePDCCH, a number of frequency domain sets corresponding to the ePDCCH, and a transmission mode and a frequency domain location corresponding to each set, where one resource block includes an eCCE number, and an aggregation level detected by the ePDCCH;
  • the manner of dividing the subframe set specifically includes: Manner 2: The subframe corresponding to the k subframe sets is divided according to an agreed manner, and specifically includes at least one of the following:
  • the MBSFN subframe of the ePDCCH is transmitted as the first subframe set, and the non-MBSFN subframe of the ePDCCH is transmitted as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set, and the other subframes are used as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set
  • the MBSFN subframe is used as the second subframe set
  • the remaining subframes are used as the third subframe set
  • each subframe set The configuration information is determined according to the agreed method
  • the agreed manner specifically includes at least one of the following:
  • the ePDCCH start position of the set of non-ABS subframes transmitting the ePDCCH is determined according to the PCFICH, and the ePDCCH start position of the set of ABS subframes transmitting the ePDCCH is determined according to signaling, or
  • the ePDCCH start position of the set of non-ABS subframes transmitting the ePDCCH is the first OFDM symbol of the subframe
  • the ePDCCH start position of the set of ABS subframes transmitting the ePDCCH is determined according to signaling
  • the k is 2
  • the ePDCCH starting position of the first subframe set is determined according to signaling
  • the ePDCCH starting position of the second subframe set is the first OFDM symbol of the subframe
  • the k is 2
  • the ePDCCH of the first subframe set The starting position is determined according to signaling
  • the ePDCCH starting position of the second subframe set is determined according to the PCFICH.
  • the starting position of the first subframe set is determined according to the PCFICH
  • the ePDCCH starting position of the second subframe set is the first OFDM symbol of the subframe.
  • the frequency domain location of the ePDCCH transmitted on the MBSFN subframe is determined according to the transmission ePDCCH frequency domain location configured by the signaling on the non-MBSFN subframe, and specifically includes: if the frequency of the ePDCCH is transmitted on the non-MBSFN subframe The domain location is the consecutive h PRBs starting from the PRB index M.
  • the frequency domain location of the ePDCCH transmitted on the MBSFN subframe is consecutive h XN PRBs starting from the PRB index M; if the frequency domain of the ePDCCH is transmitted on the non-MBSFN subframe
  • the location is a discrete number of h PRBs, such as: PRB indexed as M1, M2 Mh, and the frequency domain location of the ePDCCH transmitted on the MBSFN subframe is indexed as Ml, M1+1
  • the frequency domain of the ePDCCH transmitted on the MBSFN subframe is the PRB index of all the PRBs included in the resource block group (RBG) of the M1, M2, ..., and Mh, where the index is the PRB of the M1, M2, and Mh;
  • the unicast service and the multicast service on the MBSFN subframe adopt a time division multiplexing manner;
  • the frequency domain location of the ePDCCH transmitted on the special subframe including the 3 OFDM symbols in the DwPTS is determined according to the transmission ePDCCH frequency domain position configured by the signaling on the general subframe (non-MBSFN subframe). Specifically, if the frequency domain location of the ePDCCH transmitted on the general subframe is consecutive h PRBs starting from the PRB index M, the frequency domain location of the ePDCCH transmitted on the special subframe including the 3 OFDM symbols in the DwPTS is the PRB index.
  • the DwPTS includes three special OFDM symbols.
  • the frequency domain location of the ePDCCH transmitted on the frame is indexed as Ml, Ml+1 Ml+N-1, M2 Mh, Mh+1 Mh+N-1 PRB, where if there is a repetition, it is ignored, or if the frequency domain position of the ePDCCH transmitted on the general subframe is discrete h
  • the PRB for example, the PRB of the index M1, M2 Mh
  • the frequency domain location of the ePDCCH transmitted on the special subframe including the 3 OFDM symbols in the DwPTS is the PRB index M1, and the M2 Mh corresponding resource block group (RBG) includes All PRB;
  • N is a positive integer, priority 2,3,4;
  • the number of eCCEs included in one PRB in the MBSFN subframe is two, and the number of eCCEs included in one PRB according to the existing standard is 2 or 4; or, when the subframe is When there is no CRS transmission, the number of eCCEs included in one PRB in the MBSFN subframe is one.
  • the number of eCCEs included in a PRB is defined as 2 or 4 according to the existing standard.
  • Service and multicast services are time-multiplexed;
  • the number of eCCEs included in one PRB of the special subframe including 3 OFDM symbols in the DwPTS is 2.
  • the general subframe (non-MBSFN subframe) defines an eCCE included in the PRB according to the existing standard. The number is 2 or 4; or, when there is no CRS transmission in the subframe, the number of eCCEs included in one PRB of the special subframe including 3 OFDM symbols in the DwPTS is 1, and the general subframe (non-MBSFN subframe) According to the existing standards, the number of eCCEs included in a PRB is 2 or 4;
  • the aggregation level of the ePDCCH in the MBSFN subframe is 2, 4, 8, 16, or 2, 4, 8, 16, 32 or 4, 8, 16, 32, and the non-MBSFN subframe is in accordance with the current
  • the aggregation level of the ePDCCH is 1, 2, 4, 8, and the non-MBSFN subframe defines the aggregation level of the ePDCCH according to the existing standard; Among them, the unicast service and the multicast service on the MBSFN subframe Time division multiplexing
  • the aggregation level of the ePDCCH in the special subframe including 3 OFDM symbols in the DwPTS is 2, 4, 8, 16, or 2, 4, 8, 16, 32 or 4, 8, 16, 32.
  • the general subframe defines an aggregation level of the ePDCCH according to an existing standard.
  • the aggregation level of the ePDCCH in the special subframe including the 3 OFDM symbols in the DwPTS is 1.
  • 2, 4, 8, general subframes (non-MBSFN subframes) define the aggregation level of ePDCCH according to existing standards;
  • FIG. 2 is a schematic diagram of adding a reference signal to the first two OFDM symbols in the subframe on the NCT, and the newly added reference signal includes two The antenna ports R7 and R8 are multiplexed on the same time-frequency resource by code division;
  • FIG. 4 and FIG. 3 are two other schematic diagrams of newly adding reference signals on the first two OFDM symbols in the subframe on the NCT, where The ePDCCH is demodulated by the newly added reference signal.
  • the ePDCCH is defined according to the existing standard. The ePDCCH avoids the resource elements occupied by the newly added reference signal when mapping resources.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the k-subframe set is used to transmit the ePDCCH, and the ePDCCH configuration information corresponding to the k subframe sets is independently configured, and the configuration information includes: a PUCCH start position corresponding to the ePDCCH; k is a positive integer greater than or equal to 2;
  • the base station transmits the ePDCCH according to configuration information corresponding to the subframe set that is transmitted in the subframe of the ePDCCH;
  • the terminal receives the ePDCCH according to the configuration information corresponding to the subframe set that is transmitted in the subframe of the ePDCCH, where the number of the subframe set is greater than or equal to 2, and the ePDCCH configuration information corresponding to the subframe set is independently configured, and the configuration information is configured.
  • the method includes: a PUCCH start position corresponding to the ePDCCH; and the manner of dividing the subframe set specifically includes:
  • the subframes corresponding to the k subframe sets are divided according to an agreed manner, and specifically include:
  • the downlink subframes are divided according to the number of downlink subframes in the downlink subframe corresponding to the uplink subframe, for example, all uplink corresponding downlink subframes with the number of downlink subframes in the downlink subframe corresponding to the uplink subframe are 1.
  • All the downlink sub-frames included in the downlink sub-frame window corresponding to the uplink sub-frame are all the downlink sub-frames of all the uplink sub-frames corresponding to the second sub-frame set.
  • All the downlink subframes included in the downlink subframes of the downlink subframes corresponding to the uplink subframe are all the third subframes, and the downlink subframes corresponding to the uplink subframes are downlink. All the downlink subframes included in the downlink sub-frames of all the uplinks of the subframes are the fourth subframe set, and all the downlink corresponding sub-frames of the downlink subframes of the uplink subframe are 9 All the downlink subframes included in the frame window are the ninth subframe set; or all the downlink subframes included in the downlink subframes of the uplink subframes corresponding to the uplink subframe are all downlink subframes One A frame set, the remainder being the second set of subframes;
  • Mode 5 The configuration information of each subframe set is determined according to an agreed manner
  • the agreed manner specifically includes:
  • the set of the downlink subframes in the downlink subframe corresponding to the uplink subframe is divided into groups, and the subframe set with the largest number of downlink subframes corresponds to the PUCCH start position Npucch, and the ePDCCHs of other subframe sets correspond to the PUCCH.
  • the initial position is determined by the Npucch-X, the i subframe set index, Xi is a predefined value corresponding to each subframe set, or, in the TDD system, the subframe is divided according to the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe.
  • the subframe set with the smallest number of downlink subframes corresponds to the PUCCH start position is Npucch
  • the ePDCCH corresponding to the other subframe set has a PUCCH start position of Npucch+Xi
  • i is a subframe set index
  • Xi is each subframe.
  • ePDCCH configuration information corresponding to k subframe sets is independently configured, and the configuration information includes: ePDCCH mapping manner; k is greater than or equal to 2 Positive integer
  • the base station transmits the ePDCCH according to configuration information corresponding to the subframe set that is transmitted in the subframe of the ePDCCH;
  • the terminal receives the ePDCCH according to the configuration information corresponding to the subframe set that is transmitted in the subframe of the ePDCCH, where the number of the subframe set is greater than or equal to 2, and the ePDCCH configuration information corresponding to the subframe set is independently configured, and the configuration information is configured.
  • the method includes: mapping the ePDCCH;
  • the manner of dividing the subframe set specifically includes:
  • Manner 2 The subframes corresponding to the k subframe sets are divided according to the agreed manner, and specifically include at least one of the following:
  • the MBSFN subframe of the ePDCCH is transmitted as the first subframe set, and the non-MBSFN subframe of the ePDCCH is transmitted as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set, and the other subframes are used as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set
  • the MBSFN subframe is used as the second subframe set
  • the remaining subframes are used as the third subframe set
  • each subframe set The configuration information is determined according to the agreed method
  • the agreed manner specifically includes at least one of the following:
  • the ePDCCH is transmitted on the first n OFDM symbols of the subframe according to the PDCCH, and the frequency domain location is a signaling configuration, that is, the downlink control signaling is in the first n OFDM symbols of the subframe, and the signal is
  • the configured frequency domain location is transmitted according to the PDCCH structure, and the CRS is transmitted in the frequency domain position of the signaling configuration instead of the full bandwidth transmission, thereby reducing the interference of the CRS and the PDCCH for other cells, and the frequency domain location may also be Transmitting PCFICH and PHICH; as shown in Figure 6, other subframes are transmitted according to the ePDCCH structure defined by the existing standard;
  • a software is provided that is configured to perform the technical solutions described in the above embodiments and preferred 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.
  • a downlink control signaling transmission device where the device is located at a base station side, and includes a configuration unit and a sending unit;
  • the configuration unit is configured to configure k subframe sets to be used for transmitting ePDCCH, where k is a positive integer greater than or equal to 2;
  • the sending unit is configured to send the ePDCCH according to configuration information corresponding to a subframe set in which the subframe in which the ePDCCH is transmitted.
  • the configuration information includes at least one of the following:
  • a PRB includes the number of eCCEs
  • the mapping mode of the ePDCCH includes: a subframe set dividing subunit;
  • the sub-frame set dividing sub-unit is configured to configure a partitioning manner of the k subframe sets, and the manner of configuring the k subframe sets specifically includes at least one of the following:
  • the subframe corresponding to the k subframe sets is separately configured by k signalings
  • the subframes corresponding to the k subframe sets are divided in a predetermined manner.
  • the configuration unit further includes: a configuration information subunit;
  • the information configuration sub-unit is configured to configure the ePDCCH configuration information corresponding to the k subframe sets, and the ePDCCH configuration information corresponding to the k subframe sets specifically includes at least one of the following:
  • the configuration information of each subframe set is determined according to an agreed manner.
  • the sub-frame set sub-unit is further configured to: when the sub-frames corresponding to the k sub-frame sets are divided according to an agreed manner, specifically:
  • the MBSFN subframe of the ePDCCH is transmitted as the first subframe set, and the non-MBSFN subframe of the ePDCCH is transmitted as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set, and the other subframes are used as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set
  • the MBSFN subframe is used as the second subframe set
  • the remaining subframes are used as the third subframe set
  • the DwPTS includes only 3 OFDM symbols, and there is no CRS transmission in the subframe, the subframe in which the DwPTS is located and the MBSFN subframe are used as the first subframe set, and the remaining subframes are used as the second subframe or
  • the molecular frame set is divided according to the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe;
  • the subframe type corresponding to the k subframe sets specifically includes at least one of the following: a DwPTS without CRS transmission and only including 3 OFDM symbols, an MBSFN subframe without CRS transmission, an ABS subframe without CRS transmission, and an ABS subframe a non-ABS sub-frame, a sub-frame for transmitting a synchronization channel, and a sub-frame for transmitting a physical broadcast channel; wherein each sub-frame type corresponds to only one sub-frame set, and different sub-frame types may correspond to different sub-frame sets, or may be multiple sub-frames.
  • the frame type corresponds to the same subframe set;
  • Subframe 0 and subframe 5 are the first subframe set, and the remaining subframes are the second subframe set;
  • Subframe 0, subframe 4, subframe 5, and subframe 9 are the first subframe set, and the remaining subframes are the second subframe or
  • Subframe 0 and subframe 5 are the first subframe set
  • subframe 4 and subframe 9 are the second subframe set
  • the remaining subframes are the third subframe set.
  • the configuration information sub-unit when configured to be independently configured by signaling, specifically includes: k sets of subframes for transmitting ePDCCH, each subframe set corresponding to one signaling set;
  • the signaling set indicates at least one of the following information:
  • the time domain start position of the ePDCCH The number of frequency domain sets corresponding to the ePDCCH and the transmission mode and frequency domain location corresponding to each set; the PUCCH start position corresponding to the ePDCCH.
  • the configuration information sub-unit when configured to determine the configuration information of each subframe set in an agreed manner, specifically includes at least one of the following:
  • mapping mode of the ePDCCH The mapping mode of the ePDCCH.
  • the configuration information sub-unit is further configured to: when determining the start time position of the ePDCCH in the agreed manner, specifically:
  • the ePDCCH start position of the non-ABS subframe set for transmitting the ePDCCH is determined according to the PCFICH, and the ePDCCH start position of the ABS subframe set for transmitting the ePDCCH is determined according to signaling;
  • the ePDCCH starting position of the non-ABS subframe set transmitting the ePDCCH is the first OFDM symbol of the subframe, and the ePDCCH starting position of the ABS subframe set transmitting the ePDCCH is determined according to signaling;
  • the ePDCCH starting position of the first subframe set is determined according to signaling, and the ePDCCH starting position of the second subframe set is the first OFDM symbol of the subframe;
  • the ePDCCH starting position of the first subframe set is determined according to signaling, and the ePDCCH starting position of the second subframe set is determined according to the PCFICH; or,
  • the starting position of the first subframe set is determined according to the PCFICH, and the ePDCCH starting position of the second subframe set is the first OFDM symbol of the subframe.
  • the configuration information sub-unit is further configured to: when determining the location of the ePDCCH frequency domain according to an agreed manner, specifically:
  • the frequency domain location of the ePDCCH transmitted on the MBSFN subframe is determined according to the transmission ePDCCH frequency domain position configured by the signaling on the non-MBSFN subframe;
  • the frequency domain position of the ePDCCH transmitted on the special subframe including the 3 OFDM symbols in the DwPTS is determined according to the transmission ePDCCH frequency domain position configured by the signaling on the non-MBSFN subframe;
  • the frequency domain position of the ePDCCH of the first subframe set is determined according to signaling, and the frequency domain location of the ePDCCH of the second subframe set is determined according to the frequency domain position of the ePDCCH of the first subframe set.
  • the configuration information sub-unit further configured to determine the PUCCH start location corresponding to the ePDCCH according to the agreed manner, specifically includes:
  • the subframe set is divided according to the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe, and the subframe group with the largest number of downlink subframes is configured to correspond to the PUCCH start position as Npucch, and the ePDCCH of other subframe sets.
  • the corresponding PUCCH start position is Npucch _ Xi, i is a subframe set index, Xi is a predefined value corresponding to each subframe set, or, in the TDD system, the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe
  • the sub-frame set is divided, and the subframe set with the smallest number of downlink subframes is configured to correspond to the PUCCH start position as Npucch, and the ePDCCH corresponding to the other subframe set is the start position of the PUCCH is Npucch+Xi, where i is the subframe set index, Xi is A predefined value corresponding to each subframe set.
  • the configuration information sub-unit further configured to determine the number of eCCEs included in the one PRB according to the agreed manner, specifically includes:
  • the number of eCCEs included in one PRB in the MBSFN subframe is two, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four; or
  • the number of eCCEs included in one PRB in the MBSFN subframe is one, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four;
  • multicast services are time-multiplexed;
  • the number of eCCEs included in one PRB of the special subframes including the three OFDM symbols in the DwPTS is two, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four.
  • the number of eCCEs included in one PRB of the special subframes including the three OFDM symbols in the DwPTS is one, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four.
  • the configuration information sub-unit further configured to determine the aggregation level of the ePDCCH according to an agreed manner, specifically includes:
  • the aggregation level of the ePDCCH in the MBSFN subframe is 2, 4, 8, 16, or 2, 4, 8, 16, 32, or 4, 8, 16, 32, 1, 2, 4, 8;
  • the aggregation level of the ePDCCH in the special subframe including 3 OFDM symbols in the DwPTS is 2, 4, 8, 16, or 2, 4, 8, 16, 32 or 4, 8, 16, 32 or 1, 2, 4, 8.
  • the configuration information subunit is further configured to determine the manner according to an agreed manner When the ePDCCH is mapped, the following specifically includes:
  • the ePDCCH is transmitted on the first n OFDM symbols of the subframe according to the PDCCH, and the frequency domain location is a signaling configuration
  • the ePDCCH is transmitted on the first n OFDM symbols of the subframe according to the PDCCH, and the frequency domain location is a signaling configuration.
  • a downlink control signaling transmission device where the device is located at the terminal side, and includes a configuration acquiring unit and a receiving unit;
  • the configuration acquiring unit is configured to acquire configuration information corresponding to a subframe set in which the subframe of the ePDCCH is transmitted, where the subframe set is used as a set of k subframes for transmitting the ePDCCH, and k is a positive integer greater than or equal to 2;
  • the receiving unit is configured to receive the ePDCCH according to configuration information corresponding to a subframe set in which a subframe in which the ePDCCH is transmitted.
  • the configuration information includes at least one of the following:
  • a PRB includes the number of eCCEs
  • mapping mode of the ePDCCH The mapping mode of the ePDCCH.
  • the configuration obtaining unit includes: a subframe set partitioning obtaining subunit;
  • the sub-frame set partitioning obtaining sub-unit is configured to obtain a partitioning manner for configuring the k-subframe sets, and the manner of configuring the k sub-frame sets specifically includes at least one of the following:
  • the subframe corresponding to the k subframe sets is separately configured by k signalings;
  • the subframes corresponding to the k subframe sets are divided in a predetermined manner.
  • the configuration obtaining unit includes: an information configuration acquiring subunit;
  • the information configuration acquisition sub-unit is configured to acquire the ePDCCH configuration information corresponding to the k subframe sets, and the ePDCCH configuration information corresponding to the k subframe sets specifically includes at least one of the following: independently configured by signaling;
  • the configuration information of each subframe set is determined according to an agreed manner.
  • the subframe set partitioning obtaining sub-unit is further configured to: when the subframes corresponding to the k subframe sets are allocated according to an agreed manner, specifically include at least one of the following:
  • the MBSFN subframe of the ePDCCH is transmitted as the first subframe set, and the non-MBSFN subframe of the ePDCCH is transmitted as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set, and the other subframes are used as the second subframe set;
  • the subframe in which the DwPTS is located is used as the first subframe set
  • the MBSFN subframe is used as the second subframe set
  • the remaining subframes are used as the third subframe set
  • the DwPTS includes only 3 OFDM symbols, and there is no CRS transmission in the subframe, the subframe in which the DwPTS is located and the MBSFN subframe are used as the first subframe set, and the remaining subframes are used as the second subframe. Or,
  • the molecular frame set is divided according to the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe;
  • the subframe type corresponding to the k subframe sets specifically includes at least one of the following: a DwPTS without CRS transmission and only including 3 OFDM symbols, an MBSFN subframe without CRS transmission, an ABS subframe without CRS transmission, and an ABS subframe a non-ABS sub-frame, a sub-frame for transmitting a synchronization channel, and a sub-frame for transmitting a physical broadcast channel; wherein each sub-frame type corresponds to only one sub-frame set, and different sub-frame types may correspond to different sub-frame sets, or may be multiple sub-frames.
  • the frame type corresponds to the same subframe set;
  • Subframe 0 and subframe 5 are the first subframe set, and the remaining subframes are the second subframe set;
  • Subframe 0, subframe 4, subframe 5, and subframe 9 are the first subframe set, and the remaining subframes are the second subframe or
  • Subframe 0 and subframe 5 are the first subframe set
  • subframe 4 and subframe 9 are the second subframe set
  • the remaining subframes are the third subframe set.
  • the information configuration acquisition sub-unit is further configured to: when the information is independently configured by the signaling, specifically includes: k subframes that transmit the ePDCCH, each subframe set corresponds to one signaling set; the signaling set indicates At least one of the following information:
  • the information configuration acquisition subunit is further configured to acquire according to an agreed manner
  • the following includes at least one of the following:
  • mapping mode of the ePDCCH The mapping mode of the ePDCCH.
  • the information configuration acquisition sub-unit is further configured to: when the time domain start location of the ePDCCH is determined in an agreed manner, specifically:
  • the ePDCCH start position of the non-ABS subframe set for transmitting the ePDCCH is determined according to the PCFICH, and the ePDCCH start position of the ABS subframe set for transmitting the ePDCCH is determined according to signaling;
  • the ePDCCH starting position of the non-ABS subframe set transmitting the ePDCCH is the first OFDM symbol of the subframe, and the ePDCCH starting position of the ABS subframe set transmitting the ePDCCH is determined according to signaling;
  • the ePDCCH starting position of the first subframe set is determined according to signaling, and the ePDCCH starting position of the second subframe set is the first OFDM symbol of the subframe;
  • the ePDCCH starting position of the first subframe set is determined according to signaling, and the ePDCCH starting position of the second subframe set is determined according to the PCFICH;
  • the information configuration acquisition sub-unit is further configured to: when determining the location of the ePDCCH frequency domain in an agreed manner, specifically:
  • the frequency domain location of the ePDCCH transmitted on the MBSFN subframe is determined according to the transmission ePDCCH frequency domain position configured by the signaling on the non-MBSFN subframe;
  • the frequency domain position of the ePDCCH transmitted on the special subframe including the 3 OFDM symbols in the DwPTS is determined according to the transmission ePDCCH frequency domain position configured by the signaling on the non-MBSFN subframe;
  • the frequency domain position of the ePDCCH of the first subframe set is determined according to signaling, and the frequency domain location of the ePDCCH of the second subframe set is determined according to the frequency domain position of the ePDCCH of the first subframe set.
  • the information configuration acquisition sub-unit further configured to determine the manner of obtaining the agreement, according to the PUCCH start position corresponding to the ePDCCH, specifically includes:
  • the subframe set is divided according to the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe, and the subframe group with the largest number of downlink subframes is configured to correspond to the PUCCH start position as Npucch, and the ePDCCH of other subframe sets.
  • the corresponding PUCCH start position is Npucch _ Xi, i is a subframe set index, Xi is a predefined value corresponding to each subframe set, or, in the TDD system, the number of downlink subframes in the downlink subframe window corresponding to the uplink subframe
  • the sub-frame set is divided, and the subframe set with the smallest number of downlink subframes is configured to correspond to the PUCCH start position as Npucch, and the ePDCCH corresponding to the other subframe set is the start position of the PUCCH is Npucch+Xi, where i is the subframe set index, Xi is A predefined value corresponding to each subframe set.
  • the information configuration acquisition sub-unit is further configured to: when determining the number of eCCEs included in the one PRB according to the agreed manner, specifically:
  • Number of eCCEs included in one PRB in an MBSFN subframe when there is no CRS transmission in the subframe is two or four; or
  • the number of eCCEs included in one PRB in the MBSFN subframe is one, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four;
  • multicast services are time-multiplexed;
  • the number of eCCEs included in one PRB of the special subframes including the three OFDM symbols in the DwPTS is two, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four.
  • the number of eCCEs included in one PRB of the special subframes including the three OFDM symbols in the DwPTS is one, and the number of eCCEs included in one PRB in the non-MBSFN subframe is two or four.
  • the information configuration acquisition sub-unit is further configured to: when the aggregation level of the ePDCCH is determined according to the agreed manner, specifically:
  • the aggregation level of the ePDCCH in the MBSFN subframe is 2, 4, 8, 16, or 2, 4, 8, 16, 32, or 4, 8, 16, 32, 1, 2, 4, 8;
  • the aggregation level of the ePDCCH in the special subframe including the 3 OFDM symbols in the DwPTS is 2, 4, 8, 16, or 2, 4, 8, 16, 32, or 4, 8. 16, 32 or 1, 2, 4, 8.
  • the information configuration acquisition sub-unit is further configured to: when the mapping manner of the ePDCCH is determined according to an agreed manner, specifically:
  • the ePDCCH is transmitted on the first n OFDM symbols of the subframe according to the PDCCH, and the frequency domain location is a signaling configuration;
  • the ePDCCH is transmitted on the first n OFDM symbols of the subframe according to the PDCCH, and the frequency domain location is a signaling configuration.
  • 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.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the embodiment of the present invention introduces a subframe set, and the base station transmits the ePDCCH according to the configuration information corresponding to the subframe set in which the subframe of the ePDCCH is transmitted, so that the terminal follows the subframe where the ePDCCH is transmitted.
  • the configuration information corresponding to the frame set receives the ePDCCH. Therefore, the embodiment of the present invention can solve the problem that the resource utilization rate is reduced due to different subframe types.

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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et des dispositifs de transmission d'une signalisation de commande de liaison descendante. Le procédé comprend : la configuration d'un nombre k d'ensembles de sous-trames à utiliser lors de la transmission d'un ePDCCH, et la transmission, par une station de base, du ePDCCH sur la base d'informations de configuration correspondant à un ensemble de sous-trames au niveau duquel se trouve une sous-trame de transmission d'ePDCCH, k étant un nombre entier positif supérieur ou égal à 2, et les dispositifs étant respectivement situés d'un côté station de base et d'un côté terminal.
PCT/CN2013/090973 2013-05-09 2013-12-30 Procédé et dispositifs de transmission de signalisation de commande de liaison descendante Ceased WO2014180157A1 (fr)

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