WO2013067823A1 - 一种传输控制信息的方法及装置 - Google Patents

一种传输控制信息的方法及装置 Download PDF

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Publication number
WO2013067823A1
WO2013067823A1 PCT/CN2012/078094 CN2012078094W WO2013067823A1 WO 2013067823 A1 WO2013067823 A1 WO 2013067823A1 CN 2012078094 W CN2012078094 W CN 2012078094W WO 2013067823 A1 WO2013067823 A1 WO 2013067823A1
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Prior art keywords
pdcch
dci
reg
cces
cce
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PCT/CN2012/078094
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English (en)
French (fr)
Inventor
潘学明
沈祖康
赵锐
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电信科学技术研究院
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Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Priority to EP12847266.9A priority Critical patent/EP2779774A4/en
Priority to KR1020147014931A priority patent/KR20140098767A/ko
Priority to EP17207992.3A priority patent/EP3328147B1/en
Priority to US14/356,592 priority patent/US9893860B2/en
Priority to JP2014540293A priority patent/JP5859136B2/ja
Publication of WO2013067823A1 publication Critical patent/WO2013067823A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J11/00Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023Interference mitigation or co-ordination
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0671Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different delays between antennas
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/12Frequency diversity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2612Arrangements for wireless medium access control, e.g. by allocating physical layer transmission capacity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037Inter-user or inter-terminal allocation
    • H04L5/0041Frequency-non-contiguous
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0689Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J2211/00Orthogonal indexing scheme relating to orthogonal multiplex systems
    • H04J2211/003Orthogonal indexing scheme relating to orthogonal multiplex systems within particular systems or standards
    • H04J2211/005Long term evolution [LTE]

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for transmitting control information. Background technique
  • the E-PDCCH (ie, the enhanced physical downlink control channel) is introduced in the Rel-11 version.
  • the current standard discussion has determined that the E-PDCCH supports both beamforming and diversity transmission modes and is applied to different scenarios. For the diversity transmission mode, its specific transmission scheme has not been proposed.
  • the PDCCH is transmitted in each radio subframe, and forms a multiplexing relationship of TDM (Time Division Multiple) with the PDSCH (Physical Downlink Shared Channel).
  • the control region for transmitting the PDCCH in the LTE system is composed of a logically divided CCE (Control Channel Element), and the mapping of the CCE to the RE (Resource Element, the minimum resource unit) is completely interleaved.
  • the transmission of DCI is also based on CCE.
  • DCI Downlink Control Information
  • One DCI for one UE can be transmitted in N consecutive CCEs.
  • the possible values of N are 1, 2. 4, 8 , called CCE Aggregation Level.
  • the UE User Equipment
  • the UE performs PDCCH blind detection in the control area to search whether there is a PDCCH sent for the UE, and the blind detection uses the RNTI (radio network temporary identifier) of the UE to different formats.
  • the DCI information and the CCE aggregation level are used for decoding attempts, and if the decoding is correct, the DCI information for the UE is received.
  • the LTE UE needs to perform blind detection on the control region for each downlink subframe in the non-DRX (Discontinuous Reception) state to search for the PDCCH.
  • MU-MIMO Multi-user Multiple Input Multiple Output
  • CoMP Cooperative Multiple Points
  • RRH Remote Radio Head
  • the PDCCH of the LTE-A system has not benefited from the new technology and has been improved.
  • the application of the new technology enables the PDSCH to provide data transmission for more users at the same time, which will greatly increase the capacity of the PDCCH channel;
  • the DM-RS Demodulation Reference Symbol
  • New technologies such as the R-PDCCH (Relay PDCCH) applied in the symbol) and Relay backhau K relay backhaul provide the following techniques and experience for the enhancement of the PDCCH.
  • one solution is to: transmit the enhanced PDCCH (ie, E-PDCCH) in the PDSCH domain in the downlink subframe while retaining the original PDCCH domain, as shown in picture 2.
  • the original PDCCH domain still uses the existing transmission technology and the receiving technology, and uses the original PDCCH resources, such as the transmission diversity when transmitting, and uses the CRS (Cell-specific Reference Signal) to receive blindness during reception.
  • this part of the PDCCH domain is called a legacy PDCCH (original PDCCH or legacy PDCCH) domain.
  • the E-PDCCH domain can use more advanced transmission and reception technologies, such as precoding when transmitting, detecting based on DM-RS when receiving, and transmitting time-frequency resources outside the legacy PDCCH domain, and using some resources of the original PDSCH.
  • the multiplexing is implemented by means of frequency division with the PDSCH. This part of the PDCCH domain is called an Enhanced PDCCH (E-PDCCH) domain.
  • E-PDCCH Enhanced PDCCH
  • FDM E-PDCCH Frequency Division Multiplexing E-PDCCH
  • the E-PDCCH should support both beamforming and diversity transmission modes for different scenarios.
  • the beamforming transmission mode is mostly used for the base station to obtain more accurate channel information fed back by the terminal, and the neighboring cell interference is not very severe with the subframe change.
  • the base station selects the shield according to the CSI of the terminal feedback.
  • a good continuous frequency resource transmits the E-PDCCH for the terminal, and performs beamforming processing to improve transmission performance.
  • the E-PDCCH needs to be transmitted by using frequency diversity, that is, the frequency resource with discontinuous frequency is used for transmission.
  • FIG. 3A shows an example of transmission of a continuous E-PDCCH in a frequency domain
  • FIG. 3B shows an example of discontinuous E-PDCCH transmission.
  • the transmission of one DCI occupies resources in four PRB pairs; A common basic concept is explained:
  • PRB Physical Resource Block
  • PRB Physical Resource Block
  • one of the slots is a continuous 7 OFDM symbols in the case of normal CP, or continuous in the case of extended CP. 6 OFDM symbols, the subsequent description CPs are all based on normal CP; one RB is composed of 12 consecutive subcarriers in the frequency domain;
  • the PRB pair is a resource unit consisting of two slots in one subframe in the time domain and one RB in the frequency domain.
  • Legacy PDCCH which is a PDCCH defined in LTE Rel-8/9/10, is compatible with LTE Rel-8/.
  • the 9/lO terminal accesses the carrier, and occupies the entire system bandwidth in the frequency domain.
  • the time domain occupies the first slot in a downlink subframe.
  • the embodiment of the present invention provides a method and device for transmitting control information in a diversity mode, a method for receiving transmission control information, and a device thereof, to provide a A method of transmitting control information based on a diversity transmission mode.
  • a method of transmitting control information comprising:
  • each E-CCE including the same number of enhanced resource element groups E-REG, and each E-CCE includes multiple E- REG belongs to different frequency resource blocks RB respectively;
  • Each downlink control information DCI that needs to be transmitted on the E-PDCCH is carried in at least one E-CCE for transmission.
  • a method of receiving control information comprising:
  • E-CCEs that transmit the enhanced physical downlink control channel E-PDCCH, at least one DCI that needs to be transmitted on the E-PDCCH, each DCI being carried on at least one E-CCE;
  • the same number of enhanced resource unit groups E-REG are included in the E-CCE, and multiple E-REGs included in each E-CCE are respectively assigned to different frequency resource blocks RB.
  • a device for transmitting control information comprising:
  • Enhanced physical downlink control channel E-CCE determining unit configured to determine a transmission enhanced physical downlink control channel
  • each E-CCE includes the same number of enhanced resource unit groups E-REG, and each E-REG included in each E-CCE is respectively assigned to a different frequency resource block RB;
  • An information mapping unit configured to carry each downlink control information DCI that needs to be transmitted on the E-PDCCH into at least one E-CCE;
  • An information transmission unit is configured to transmit an E-CCE carrying a DCI.
  • An apparatus for receiving control information comprising:
  • a receiving unit configured to receive multiple enhanced control channel units E-CCEs that transmit an enhanced physical downlink control channel E-PDCCH, each E-CCE includes the same number of enhanced resource unit groups E-REG, and each E-CCE The plurality of included E-REGs are respectively assigned to different frequency resource blocks RB;
  • a control information acquiring unit configured to acquire, from the plurality of E-CCEs, at least one downlink control information DCI that needs to be transmitted on the E-PDCCH.
  • each E-CCE includes the same number of E-REGs, and each E-REG included in each E-CCE belongs to a different one. RB; will need to be in the Each downlink control information DCI transmitted on the E-PDCCH is carried in at least one E-CCE for transmission.
  • each E-REG included in each E-CCE is respectively assigned to a different frequency resource block RB, each DCI that needs to be transmitted is carried on at least one E-CCE, which can be implemented.
  • the modulation symbols of the DCI are transmitted to different E-REGs for transmission, so that each part of one DCI is respectively transmitted to multiple different frequency band resources corresponding to the E-PDCCH, thereby improving the stability and reliability of the DCI transmission.
  • FIG. 1 is a schematic diagram of a multiplexing relationship between a control region and a data region in a downlink subframe in the prior art
  • FIG. 2 is a schematic diagram of a location of an E-PDCCH in the prior art
  • FIG. 3A is a schematic diagram of a transmission of a continuous frequency-domain E-PDCCH in the prior art
  • FIG. 3B is a schematic diagram of a transmission of a frequency-domain discontinuous E-PDCCH in the prior art
  • FIG. 4 is a flowchart of a method for transmitting control information based on a network side according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for determining an E-CCE for transmitting an E-PDCCH according to an embodiment of the present invention
  • 6A is a schematic diagram of a configuration of an E-REG corresponding to an RB according to an embodiment of the present invention
  • FIG. 6B is a second structural diagram of an E-REG corresponding to an RB according to an embodiment of the present invention.
  • 6C is a third structural manner of an E-REG corresponding to an RB according to an embodiment of the present invention.
  • 6D is a fourth embodiment of an E-REG corresponding to an RB according to an embodiment of the present invention.
  • FIG. 7A is a schematic diagram of the E-CCE being aggregated to form an E-CCE according to an embodiment of the present invention
  • FIG. 7B is a second schematic diagram of the E-CCE being aggregated to form an E-CCE according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of a method for receiving control information based on a terminal side according to an embodiment of the present invention
  • FIG. 9 is a schematic structural diagram of an apparatus for transmitting control information according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of an apparatus for receiving control information according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention provides a method and device for transmitting control information in a diversity mode, a method for receiving transmission control information, and a device thereof.
  • the method for transmitting control information in the embodiment of the present invention is as follows: determining a plurality of enhanced control channel elements E-CCEs that transmit E-PDCCHs, where each E-CCE includes the same number of E-REGs, and each E-CCE includes The multiple E-REGs are respectively assigned to different frequency resource blocks RB; each downlink control information DCI that needs to be transmitted on the E-PDCCH is carried in at least one E-CCE for transmission.
  • each E-REG included in each E-CCE is respectively assigned to a different frequency resource block RB, each DCI that needs to be transmitted is carried on at least one E-CCE, which can be implemented.
  • the modulation symbols of the DCI are transmitted to different E-REGs for transmission, so that one DCI is transmitted on multiple different frequency bands corresponding to the E-PDCCH, thereby improving the stability and reliability of the DCI transmission.
  • a method for transmitting control information based on a network side includes:
  • Step 401 The base station determines a plurality of E-CCEs for transmitting the E-PDCCH.
  • each E-CCE includes the same number of E-REGs (Enhanced Resource Element Groups), and multiple E-REGs included in each E-CCE are respectively assigned to different RBs ( Frequency Resource Block, frequency resource block).
  • the RB is allocated by the base station to the UE (i.e., the user terminal equipment), and the frequency resource blocks are discretely distributed within the system bandwidth.
  • Step 402 The base station transmits, by using the DCI that needs to be transmitted on the E-PDCCH, to at least one E-CCE of the multiple E-CCEs for transmission.
  • determining a plurality of E-CCEs for transmitting the E-PDCCH may be determined by using a method process as shown in FIG. 5:
  • Step 501 Determine a plurality of frequency resource blocks RBs for transmitting the E-PDCCH.
  • Step 502 Determine, for each RB of the multiple RBs, one or more E-REGs corresponding to the RBs. Accordingly, all E-REGs corresponding to the multiple RBs are determined.
  • Step 503 Aggregate all E-REGs corresponding to the multiple RBs to form multiple E-CCEs, where each
  • the E-CCE contains the same number of E-REGs, and each E-CCE contains multiple E-REGs that belong to different frequency resource blocks RB.
  • the E-REG corresponding to each RB is determined, and is implemented in the following manner: determining all available REs in one of the physical resource area blocks in the RB as one E-REG,
  • the available RE is used for transmitting the legacy PDCCH and the reference signal in the physical resource area block (the reference signal may include a CRS (Cell-specific Reference Signal), a DMRS (Demodulation Reference Signal) All REs other than REs of signals), CSI-RS (Channel State Information Reference Signal), PRS (Positioning Reference Signal).
  • the physical resource area block can be specifically as follows:
  • Alt-1 physical resource area block, occupying a PRB pair (that is, a physical resource block pair) in the time domain except legacy
  • the legacy PDCCH occupies 2 OFDM symbols (the portion filled with slashes in FIG. 6A), and the physical resource region block is 12 OFDM symbols in the time domain of the subframe. 12 subcarriers on the domain.
  • Alt-2 a physical resource area block that occupies all OFDM symbols in the PRB pair except for the OFDM symbol occupied by the legacy PDCCH in the time domain, and occupies one subcarrier or multiple contigs of the RB in the frequency domain.
  • Carrier as shown in the example of FIG. 6B, the legacy PDCCH occupies 2 OFDM Symbols (the portion filled with slashes in FIG. 6B),
  • the first slot (ie, the time slot) and the second slot of the downlink subframe respectively constitute respective physical resource region blocks; one of the physical resource region blocks corresponding to the RB is the first slot located in the downlink subframe, and the physical The resource area block occupies 5 OFDM symbols in the first slot in the time domain, and occupies 12 subcarriers in the frequency domain.
  • Alt-3 a physical resource area block, occupying, in the time domain, all OFDM symbols except one of the OFDM symbols occupied by the legacy PDCCH in one PRB, and occupying one subcarrier or a plurality of consecutive subcarriers of the RB in the frequency domain;
  • the legacy PDCCH occupies 2 OFDM symbols (the portion filled with the slash in FIG. 6C)
  • one physical resource block region of the RB occupies 12 OFDM symbols in the time domain, and occupies in the frequency domain. 3 subcarriers.
  • Alt-4 a physical resource area block, occupying, in the time domain, all OFDM symbols except one of the OFDM symbols occupied by the legacy PDCCH in one PRB, and occupying one subcarrier or a plurality of consecutive subcarriers of the RB in the frequency domain;
  • the legacy PDCCH occupies two OFDM symbols (the portion filled with the slash in FIG. 6D), and the first slot and the second slot of the downlink subframe respectively form respective physical resource region blocks, where the RB corresponds.
  • a physical resource block area is located on the first slot of the downlink subframe, and occupies 5 OFDM symbols in the first slot and 3 subcarriers in the frequency domain in the time domain.
  • each downlink control information DCI that needs to be transmitted on the E-PDCCH is carried in one or more E-CCEs, in the following manner:
  • each downlink control information DCI that needs to be transmitted on the E-PDCCH is carried in one or more E-CCEs, and the following two methods may also be used:
  • All E-RGEs corresponding to the plurality of E-CCEs are sorted in order from low frequency to high frequency, and all sorted E-REGs are interleaved to form an interleaved E-REG sequence;
  • Manner 2 Sort all E-RGEs corresponding to the plurality of E-CCEs in order from low frequency to high frequency to obtain an E-REG sequence;
  • the sequence, the SB sequence is sequentially mapped to the sorted E-REG sequence, and the plurality of E-REGs corresponding to the plurality of SBs of the same DCI are respectively attributed to different RBs.
  • each E-CCE includes four E-REGs, that is, a total of 16 E-REGs (E-REG#0, E-REG#1, ..., E, respectively)
  • -REG#15 means that E-REG#0 ⁇ E-REG#3 belongs to the same RB, E-REG#4 ⁇ E-REG#7 belongs to the same RB, E-REG#8 ⁇ E-REG#11 Attributable to the same RB, E-REG#12 ⁇ E-REG#15 belongs to the same RB), the number of DCIs that need to be transmitted on the E-PDCCH is 4 (using DCI#1, DCI#2, D
  • step S1 16 E-REGs are sorted in order from low frequency to high frequency, and the E-REG sequence is obtained as ⁇ E-REG#0, E-REG#1, E-REG#15 ⁇ , as shown in FIG. 7A. Show
  • Step Sa2 performing interleaving rearrangement on the sorted 16 E-REGs, and obtaining the interleaved E-REG sequence as ⁇ E-REG#0, E-REG#5, E-REG#10, E-REG#15 , E-REG#1, E-REG#6, E-REG#11, E-REG#12, E-REG#2, E-REG#7, E-REG#8, E-REG#13, E -REG#3, E-REG#4, E-REG#9, E-REG#14 ⁇ ; Step Sa2, according to the interleaved E-REG sequence, 16 E-REGs are aggregated to form four E-CCEs As shown in FIG.
  • E-REG#0, E-REG#5, E-REG#10, and E-REG#15 are aggregated to constitute E-CCE#0;
  • E-REG#K E-REG#6, E -REG#11 and E-REG#12 aggregate to form E-CCE#1;
  • E-REG#2, E-REG#7, E-REG#8 and E-REG#13 aggregate to form E-CCE#2;
  • E -REG#3, E-REG#4, E-REG#9 and E-REG#14 aggregate to form E-CCE#3 0
  • Step Sa3 The 16 SBs corresponding to the four DCIs to be transmitted are sequentially mapped to the 16 E-REGs after the interleaving according to the sequence, that is, SB#0 ⁇ SB#15 are respectively mapped to E-REG#0 ⁇ E-REG#15.
  • Step Sb1 the 16 E-REGs are sorted in order from low frequency to high frequency, and the E-REG sequence is obtained as ⁇ E-REG#0, E-REG#1, E-REG#15 ⁇ , as shown in FIG. 7B. Show
  • Step Sb2 cascading 16 SBs corresponding to the four DCIs to obtain cascaded SB sequences ⁇ SB#0, SB#1, SB#15 ⁇ ;
  • Step Sb3 performing interleaving rearrangement on the sorted 16 SBs to obtain re-interleaved SB sequences ⁇ SB#0, SB#4, SB#8, SB#12, SB#13, SB#1, SB#5 , SB#9, SB#10, SB#14, SB#2, SB#6, SB#7, SB#11, SB#15, #SB3 ⁇ ;
  • Step Sb4 the sorted E-REG sequence obtained in step SB1, and 16 E-REGs are aggregated to obtain four E-CCEs, as shown in FIG. 7B, E-REG#0, E-REG#5, E-REG#10 and E-REG#15 are aggregated to form E-CCE#0; E-REG# 1, E-REG#6, E-REG# 11 and E-REG# 12 are aggregated to form E-CCE# 1; E-REG#2 E-REG#7, E-REG#8 and E-REG#13 are aggregated to form E-CCE#2; E-REG#3, E-REG#4, E-REG#9 and E-REG#14 are aggregated E-CCE#3;
  • Step Sb5 The 16 SBs after the interleaving rearrangement are sequentially mapped to the sequenced 16 E-REGs in sequence, that is, SB#0, SB#4, SB#8, and SB#12 are sequentially mapped to E-.
  • REG#0 ⁇ E-REG#3; SB#13, SB#1, SB#5 and SB#9 are mapped to E-REG#4 ⁇ E-REG#7 in turn;
  • SB#10, SB#14, SB#2 and SB#6 are mapped to E-REG#8 ⁇ E-REG#11 in turn;
  • SB#7, SB#11, SB#15 and #883 are mapped to E-REG#12 ⁇ E-REG# in turn 14 on.
  • the manner of interleaving multiple E-REGs in the above example is only a specific example, and is not limited to the interleaving manner shown in FIG. 7A, and may be flexibly set according to actual needs, such as may be determined according to the current subframe number or by current The cell ID is determined, and is not enumerated here.
  • the manner of interleaving multiple SBs is only a specific example, and is not limited to the interleaving manner shown in FIG. 7B, and may be based on actual needs. Flexible settings, such as the current subframe number can be determined or determined by the current cell ID, no longer - enumerated.
  • the embodiment of the present invention further provides a method for receiving control information based on the terminal side, where the method is as shown in FIG.
  • Step 801 Receive multiple E-CCEs that transmit E-PDCCHs, each E-CCE includes the same number of E-REGs, and multiple E-REGs included in each E-CCE are respectively assigned to different RBs.
  • Step 802 Obtain, from the multiple E-CCEs, each DCI that needs to be transmitted on the E-PDCCH.
  • the multiple E-CCEs for transmitting the E-PDCCH are: multiple E-CCEs formed by aggregating all E-REGs corresponding to multiple RBs for transmitting the E-PDCCH Wherein each of the E-CCEs includes the same number of E-REGs, and each of the E-CCEs included in the E-CCEs is respectively assigned to a different frequency resource block RB.
  • the block RB is allocated to the UE by the base station, and the frequency resource blocks are discretely distributed within the system bandwidth.
  • the E-REG corresponding to each RB is an E-REG determined by all available REs in one of the physical resource area blocks of the RB, and the available RE is in the physical resource area block.
  • the physical resource area block occupies all OFDM symbols in the PRB pair except for the OFDM symbol occupied by the legacy PDCCH in the time domain, and occupies all subcarriers of the RB in the frequency domain; or
  • the physical resource area block occupies all OFDM symbols except one of the OFDM symbols occupied by the legacy PDCCH in one PRB, and occupies all subcarriers of the RB in the frequency domain;
  • the physical resource area block occupies all OFDM symbols in the PRB pair except for the OFDM symbol occupied by the legacy PDCCH in the time domain, and occupies one subcarrier or multiple consecutive subcarriers of the RB in the frequency domain;
  • the physical resource area block occupies all OFDM symbols except one of the OFDM symbols occupied by the legacy PDCCH in one PRB in the time domain, and occupies one subcarrier or multiple consecutive subcarriers of the RB in the frequency domain.
  • acquiring at least one DCI that needs to be transmitted on the E-PDCCH on the multiple E-CCEs includes:
  • an embodiment of the present invention further provides an apparatus for transmitting control information, where the apparatus may be configured in a base station, and the structure of the apparatus may be as shown in FIG.
  • the E-CCE determining unit 91 is configured to determine a plurality of E-CCEs that transmit the E-PDCCH, each E-CCE includes the same number of E-REGs, and each E-REG included in each E-CCE belongs to the E-REG a different frequency resource block RB; an information mapping unit 92, configured to carry each DCI that needs to be transmitted on the E-PDCCH into one or more E-CCEs;
  • the information transmission unit 93 is configured to transmit the E-CCE carrying the DCI.
  • the E-CCE determining unit 91 determines a plurality of E-CCEs for transmitting the E-PDCCH, specifically for: determining a plurality of RBs for transmitting the E-PDCCH;
  • All E-REGs corresponding to the plurality of RBs are aggregated to form a plurality of E-CCEs.
  • the E-CCE determining unit 91 determines the E-REG corresponding to the RB, specifically for:
  • the physical resource area block occupies all OFDM symbols in the PRB pair except for the orthogonal frequency division multiplexing OFDM symbols occupied by the legacy PDCCH in the time domain, and occupies all subcarriers of the RB in the frequency domain; Or the physical resource area block occupies all OFDM symbols except the OFDM symbol occupied by the legacy PDCCH in one PRB in the time domain, and occupies all subcarriers of the RB in the frequency domain; or
  • the physical resource area block occupies all OFDM symbols in the PRB pair except for the OFDM symbol occupied by the legacy PDCCH in the time domain, and occupies one subcarrier or multiple consecutive subcarriers of the RB in the frequency domain;
  • the physical resource area block occupies all OFDM symbols except one of the OFDM symbols occupied by the legacy PDCCH in one PRB in the time domain, and occupies one subcarrier or multiple consecutive subcarriers of the RB in the frequency domain.
  • the information mapping unit 92 is specifically configured to: determine, according to a coding rate required by the DCI, the number of E-CCEs for carrying the DCI for each DCI; and, from the multiple A corresponding number of E-CCEs are selected in the E-CCE, and the DCI is carried in the selected number of E-CCEs selected.
  • the information mapping unit 92 is specifically configured to: concatenate modulation symbols that need to transmit all DCIs, and divide the cascaded modulation symbol sequence into multiple SBs, each SB comprising the same number of multiple Modulating symbols; sorting all E-RGEs corresponding to the plurality of E-CCEs in order from low frequency to high frequency, and interleaving all sorted E-REGs to form an interleaved E-REG sequence;
  • All the SBs after the cascading are mapped to the corresponding E-REG sequences in the interleaved order, and the plurality of E-REGs corresponding to the multiple SBs of the same DCI are respectively attributed to different RBs.
  • the information mapping unit 92 is specifically configured to: sort all E-RGEs corresponding to the multiple E-CCEs in order from low frequency to high frequency to obtain an E-REG sequence;
  • the sequence, the SB sequence is sequentially mapped to the sorted E-REG sequence, and the plurality of E-REGs corresponding to the plurality of SBs of the same DCI are respectively attributed to different RBs.
  • the embodiment of the present invention further provides a user terminal device.
  • the structure of the user terminal device is as shown in FIG. 10, and includes:
  • the receiving unit 101 is configured to receive multiple E-CCEs that transmit E-PDCCHs, each E-CCE includes the same number of E-REGs, and each E-CCE includes multiple E-REGs respectively belong to different E-REGs RB;
  • the control information acquiring unit 102 is configured to acquire, from the multiple E-CCEs, at least one DCI that needs to be transmitted on the E-PDCCH.
  • control information acquiring unit 102 is specifically configured to:
  • control information acquiring unit 102 is specifically configured to:
  • a plurality of E-CCEs that transmit an E-PDCCH are determined, where each E-CCE includes the same number of E-REGs, and each E-CCE includes multiple E-REGs respectively.
  • Each downlink control information DCI that needs to be transmitted on the E-PDCCH is carried in at least one E-CCE for transmission.
  • each E-REG included in each E-CCE belongs to a different frequency resource block RB, Therefore, each DCI that needs to be transmitted is carried to at least one E-CCE, and the modulation symbols of the DCI can be separately transmitted to different E-REGs, thereby implementing a DCI in multiple different frequency bands corresponding to the E-PDCCH.
  • the resource is transmitted to improve the stability and reliability of the DCI transmission.
  • the frequency diversity-based E-PDCCH transmission method can fully utilize the frequency diversity to transmit the DCI, and randomize the inter-cell interference, and implement the cartridge.

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Abstract

本发明公开了一种传输控制信息的方法及装置,以提供一种基于分集传输模式发送控制信息的方式;传输控制信息的方法,包括:确定传输增强物理下行控制信道E-PDCCH的多个增强控制信道单元E-CCE,每个E-CCE包含相同数量的E-REG,且每个E-CCE包含的多个增强资源单元组E-REG分别归属于不同的频率资源块RB;将需要在所述E-PDCCH上传输的每个下行控制信息DCI承载到至少一个E-CCE中进行传输。实现将一条DCI中的各部分分别承载到E-PDCCH对应的多个不同频段上传输,提高DCI传输的稳定性和可靠性。

Description

一种传输控制信息的方法及装置 本申请要求在 2011年 11月 7日提交中国专利局、 申请号为 201110349125.1、 发明名称 为"一种传输控制信息的方法及装置"的中国专利申请的优先权, 其全部内容通过引用结合 在本申请中。
技术领域
本发明涉及通信领域, 尤其涉及一种传输控制信息的方法及装置。 背景技术
为了提升 LTE-A ( Long Term Evolution, 长期演进)系统性能和扩大 PDCCH ( Physical Downlink Control Channel, 物理下行控制信道)容量, 在 Rel-11版本中引入了 E-PDCCH (即增强物理下行控制信道)。 目前标准讨论已确定 E-PDCCH要支持波束赋形传输和分集 传输两种模式, 应用于不同的场景。 对于分集传输模式, 其具体的发送方案尚未提出。
在 LTE系统中, PDCCH在每个无线子帧中进行发送,并与 PDSCH( Physical Downlink Shared Channel, 物理下行共享信道)形成 TDM ( Time Division Multiple, 时分复用)的复 用关系。 如图 1所示, PDCCH通过一个下行子帧的前 N个 OFDM ( Orthogonal Frequency Division Multiplex, 正交频分复用)符号发送, 其中 N可能的取值为 1,2,3,4, 而 N=4仅允 许出现在系统带宽为 1.4MHz的系统中。 LTE系统中传输 PDCCH的控制区域是由逻辑划 分的 CCE ( Control Channel Element, 控制信道单元)构成, 其中 CCE到 RE ( Resource Element, 最小资源单元) 的映射釆用完全交织方式。 DCI (Downlink Control Information, 下行控制信息)的传输也是基于 CCE为单位的, 针对一个 UE的一个 DCI可以在 N个连续 的 CCE中进行发送, 在 LTE 系统中 N的可能取值为 1 , 2, 4, 8 , 称为 CCE聚合等级 (Aggregation Level)。 UE ( User Equipment , 用户设备 )在控制区域中进行 PDCCH盲检, 搜索是否存在针对该 UE 发送的 PDCCH, 盲检即使用该 UE 的 RNTI ( radio network temporary identifier, 无线网络临时识别符)对不同格式的 DCI信息以及 CCE聚合等级进 行解码尝试, 如果解码正确, 则接收针对该 UE 的 DCI 信息。 LTE UE 在非 DRX ( Discontinuous Reception, 非连续接收 )状态中的每一个下行子帧都需要对控制区域进行 盲检以搜索 PDCCH。
由于 MU-MIMO ( Multi-user Multiple Input Multiple Output, 多用户多输入多输出), CoMP ( Cooperative Multiple Points, 协作多点), 载波聚合等技术和同小区 ID 的 RRH ( Remote Radio Head, 无线远端头)、 8天线等配置的引入, LTE-A ( Long Term Evolution Advanced, 后续长期演进) 系统的 PDSCH的容量和传输效率得到大幅度提升; 而相对早 期的 LTE版本(如 Rel-8/9 ), LTE-A系统的 PDCCH却未受益于新技术而获得提升。 一方面, 新技术的应用使 PDSCH可以同时为更多用户提供数据传输, 这将大大提高 对 PDCCH信道容量的需求;另一方面,在 PDSCH中应用的 DM-RS( Demodulation Reference Symbol,解调参考符号)和在 Relay backhauK中继回程)中应用的 R-PDCCH( Relay PDCCH, 中继 PDCCH )等新技术为 PDCCH的增强提供了可循的技术和经验。
为了解决下行控制信道容量受限, 并且提高下行控制信息的传输效率, 一种解决方案 是: 保留原有 PDCCH域的同时在下行子帧中的 PDSCH域内发送增强的 PDCCH (即 E-PDCCH ), 如图 2所示。 原有 PDCCH域仍然釆用现有的发送技术和接收技术, 使用原 有的 PDCCH资源,如发送时釆用发送分集,接收时基于 CRS( Cell-specific Reference Signal, 小区级参考信号)釆用盲检技术在公共搜索空间和用户专属搜索空间对 DCI进行盲检, 并 占用前 N个 OFDM符号发送, 其中 N可能的取值为 1 , 2, 3 , 4, 而 N=4仅允许出现在系 统带宽为 1.4MHz的系统中, 这部分 PDCCH域称为 legacy PDCCH (原有 PDCCH或传统 PDCCH )域。
E-PDCCH域可以使用更先进的发送和接收技术, 如发送时釆用预编码, 接收时基于 DM-RS进行检测, 占用 legacy PDCCH域以外的时频资源发送, 使用原有的 PDSCH的部 分资源, 与 PDSCH通过频分的方式实现复用, 这部分 PDCCH域称为 Enhanced PDCCH ( E-PDCCH )域。 这种 E-PDCCH 与 PDSCH通过频分方式实现复用的方案称为 FDM E-PDCCH (频分复用 E-PDCCH )。
目前标准讨论已确定 E-PDCCH要支持波束赋形传输和分集传输两种模式, 应用于不 同的场景。 通常情况下, 波束赋形传输模式多用于基站能够获得终端反馈的较为精确的信 道信息, 且邻小区千扰随子帧变化不是非常剧烈的场景, 此时基站根据终端反馈的 CSI选 择盾量较好的连续频率资源为该终端传输 E-PDCCH, 并进行波束赋形处理提高传输性能。 在信道信息不能准确获得, 或者邻小区千扰随子帧变化剧烈且不可预知的情况下, 需要釆 用频率分集的方式传输 E-PDCCH, 即使用频率上不连续的频率资源进行传输。
图 3 A给出了频域连续的 E-PDCCH的传输示例, 图 3B给出了不连续的 E-PDCCH传 输示例, 示例中一条 DCI的传输占用了四个 PRB pair中的资源; 以下对几个常用的基本概 念进行说明:
PRB ( Physical Resource Block, 物理资源块) 为由时域上一个 slot, 频域上一个 RB 构成的资源单位;其中一个 slot为 normal CP情况下连续的 7个 OFDM symbol,或者 extended CP情况下连续的 6个 OFDM symbol, 后续描述 CP均以 normal CP为例; 一个 RB为频域 上连续的 12个子载波构成;
PRB pair, 由时域上一个子帧内的两个 slot, 频域上一个 RB构成的资源单位; Legacy PDCCH, 即 LTE Rel-8/9/10中定义的 PDCCH, 在兼容 LTE Rel-8/9/lO终端接 入的载波中传输, 在频域上占用整个系统带宽, 时域上占用一个下行子帧中第一个 slot起 始的 1、 2、 3或 4个连续的 OFDM symbol; 在不兼容 LTE Rel-8/9/10 UE接入的新增的载 波类型中, 可不传输 legacy PDCCH。 发明内容
针对现有技术中没有提供分集模式传输控制信息的问题, 本发明实施例中提供了一 种釆用分集模式传输控制信息的方法及其装置、 接收传输控制信息的方法及其装置, 以提 供一种基于分集传输模式发送控制信息的方式。
一种传输控制信息的方法, 包括:
确定传输增强物理下行控制信道 E-PDCCH 的多个增强控制信道单元 E-CCE , 每个 E-CCE包含相同数量的增强资源单元组 E-REG,且每个 E-CCE包含的多个 E-REG分别归 属于不同的频率资源块 RB;
将需要在所述 E-PDCCH上传输的每个下行控制信息 DCI承载到至少一个 E-CCE中进 行传输。
一种接收控制信息的方法, 包括:
在传输增强物理下行控制信道 E-PDCCH的多个增强控制信道单元 E-CCE上接收需要 在所述 E-PDCCH上传输的至少一个 DCI,每个 DCI承载在至少一 E-CCE上;每个 E-CCE 中包含相同数量的增强资源单元组 E-REG, 且每个 E-CCE包含的多个 E-REG分别归属于 不同的频率资源块 RB。
一种传输控制信息的装置, 包括:
增强物理下行控制信道 E-CCE 确定单元, 用于确定传输增强物理下行控制信道
E-PDCCH的多个 E-CCE, 每个 E-CCE 包含相同数量的增强资源单元组 E-REG, 且每个 E-CCE包含的多个 E-REG分别归属于不同的频率资源块 RB;
信息映射单元, 用于将需要在所述 E-PDCCH上传输的每个下行控制信息 DCI承载到 至少一个 E-CCE中;
信息传输单元, 用于传输承载有 DCI的 E-CCE。
一种接收控制信息的装置, 包括:
接收单元, 用于接收传输增强物理下行控制信道 E-PDCCH的多个增强控制信道单元 E-CCE, 每个 E-CCE中包含相同数量的增强资源单元组 E-REG, 且每个 E-CCE包含的多 个 E-REG分别归属于不同的频率资源块 RB;
控制信息获取单元, 用于从所述多个 E-CCE中获取需要在所述 E-PDCCH上传输的至 少一个下行控制信息 DCI。
本发明实施例中, 确定传输 E-PDCCH的多个 E-CCE, 所述每个 E-CCE包含相同数量 的 E-REG, 且每个 E-CCE 包含的多个 E-REG分别归属于不同的 RB ; 将需要在所述 E-PDCCH上传输的每个下行控制信息 DCI承载到至少一个 E-CCE中进行传输。 釆用本发 明技术方案,由于每个 E-CCE包含的多个 E-REG分别归属于不同的频率资源块 RB ,因此, 将每个需要传输的 DCI承载到至少一个 E-CCE上, 可以实现将 DCI的调制符号分集到不 同的 E-REG上传输,从而实现将一条 DCI中的各部分分别承载到 E-PDCCH对应的多个不 同频段资源上传输, 提高 DCI传输的稳定性和可靠性。 附图说明
图 1为现有技术中一个下行子帧中控制区域与数据区域的复用关系示意图; 图 2为现有技术中 E-PDCCH的位置示意图;;
图 3A为现有技术中频域连续的 E-PDCCH的传示意图;
图 3B为现有技术中频域不连续的 E-PDCCH的传示意图;
图 4为本发明实施例中基于网络侧的控制信息传输方法流程图;
图 5为本发明实施例中确定用于传输 E-PDCCH的 E-CCE的方法流程图;
图 6A为本发明实施例中一个 RB对应的一个 E-REG的构成方式之一;
图 6B为本发明实施例中一个 RB对应的一个 E-REG的构成方式之二;
图 6C为本发明实施例中一个 RB对应的一个 E-REG的构成方式之三;
图 6D为本发明实施例中一个 RB对应的一个 E-REG的构成方式之四;
图 7 A为本发明实施例中对 E-REG进行聚合构成 E-CCE的示意图之一;
图 7B为本发明实施例中对 E-REG进行聚合构成 E-CCE的示意图之二;
图 8为本发明实施例中基于终端侧接收控制信息的方法流程图;
图 9为本发明实施例中传输控制信息的装置的结构示意图;
图 10为本发明实施例中接收控制信息的装置的结构示意图。 具体实施方式
针对现有技术中没有提供分集模式传输控制信息的问题, 本发明实施例中提供了一种 釆用分集模式传输控制信息的方法及其装置、 接收传输控制信息的方法及其装置。 本发明 实施例中传输控制信息的方法如下:确定传输 E-PDCCH的多个增强控制信道单元 E-CCE, 所述每个 E-CCE包含相同数量的 E-REG,且每个 E-CCE包含的多个 E-REG分别归属于不 同的频率资源块 RB; 将需要在所述 E-PDCCH上传输的每个下行控制信息 DCI承载到至 少一个 E-CCE中进行传输。 釆用本发明技术方案, 由于每个 E-CCE包含的多个 E-REG分 别归属于不同的频率资源块 RB ,因此,将每个需要传输的 DCI承载到至少一个 E-CCE上, 可以实现将 DCI 的调制符号分集到不同的 E-REG上传输, 从而实现将一条 DCI 在 E-PDCCH对应的多个不同频段资源上传输, 提高 DCI传输的稳定性和可靠性。 下面结合说明书附图对本发明技术方案进行详细的描述。
参见图 4, 为本发明实施例中基于网络侧的控制信息传输方法, 包括:
步骤 401、 基站确定用于传输 E-PDCCH的多个 E-CCE。
本发明实施例中, 每个 E-CCE包含相同数量的 E-REG ( Enhanced Resource Element Group , 增强资源单元组), 且每个 E-CCE 包含的多个 E-REG分别归属于不同的 RB ( Frequency Resource Block, 频率资源块)。 RB由基站分配给 UE (即用户终端设备), 且 所述频率资源块离散分布在系统带宽内。
步骤 402、基站将需要在所述 E-PDCCH上传输的每个 DCI承载到所述多个 E-CCE中 的至少一个 E-CCE上进行传输。
本发明实施例中, 确定出用于传输所述 E-PDCCH的多个 E-CCE, 可釆用如图 5所示 的方法流程确定:
步骤 501、 确定出用于传输所述 E-PDCCH的多个频率资源块 RB。
步骤 502、针对所述多个 RB中的每个 RB ,确定出与所述 RB对应的一个或多个 E-REG; 依此, 确定出所述多个 RB对应的所有 E-REG。
步骤 503、 将所述多个 RB对应的所有 E-REG聚合构成多个 E-CCE, 其中所述每个
E-CCE包含相同数量的 E-REG,且每个 E-CCE包含的多个 E-REG分别归属于不同的频率 资源块 RB。
上述方法流程中的步骤 502中,确定出每个 RB对应的 E-REG,釆用用以下方式实现: 将 RB中的其中一个物理资源区域块中的所有可用的 RE确定为一个 E-REG, 所述可用的 RE为所述物理资源区域块中除用于传输传统 PDCCH和参考信号 (参考信号可包括 CRS ( Cell-specific Reference signal , 小区专属参考信号)、 DMRS ( Demodulation Reference signal, 解调参考信号)、 CSI-RS ( Channel State Information Reference Signal , 信道信息测 量参考信号)、 PRS ( Positioning Reference Signal , 定位参考信号)等) 的 RE之外的所有 RE。 物理资源区域块具体的可为以下情况:
Alt-1 : 物理资源区域块, 在时域上占用一个 PRB pair (即物理资源块对) 中除 legacy
PDCCH占用的 OFDM ( Orthogonal Frequency-Division Multiplexing, 正交频分多址)符号 之外的所有 OFDM符号( OFDM符号即为后续提到的 OFDM symbol ),且在频域上占用所 述 RB的所有子载波。如图 6A所示的例子,在一个 RB中, legacy PDCCH占用 2个 OFDM symbol (图 6A 中填充斜线的部分), 物理资源区域块为该子帧内时域上的 12 个 OFDM symbol, 频域上 12个子载波。
Alt-2:物理资源区域块,在时域上占用一个 PRB pair中除 legacy PDCCH占用的 OFDM 符号之外的所有 OFDM符号, 且在频域上占用所述 RB的一个子载波或多个连续子载波; 如图 6B所示的例子, legacy PDCCH占用 2个 OFDM Symbol (图 6B中填充斜线的部分 ), 下行子帧的第一个 slot (即时隙)和第二个 slot分别构成各自的物理资源区域块; 该 RB 对应的其中一个物理资源区域块为位于下行子帧的第一个 slot, 且该物理资源区域块在时 域上占用第一个 slot内的 5个 OFDM symbol, 在频域上占用 12个子载波。
Alt-3 : 物理资源区域块, 在时域占用一个 PRB 中除传统 PDCCH占用的 OFDM符号 之外的所有 OFDM符号, 且在频域上占用所述 RB的一个子载波或多个连续子载波; 如图 6C所示, legacy PDCCH占用 2个 OFDM Symbol (图 6C中填充斜线的部分)时, 所述 RB 的一个物理资源块区域, 在时域上占用 12个 OFDM symbol, 在频域上占用 3个子载波。
Alt-4: 物理资源区域块, 在时域占用一个 PRB 中除传统 PDCCH占用的 OFDM符号 之外的所有 OFDM符号, 且在频域上占用所述 RB的一个子载波或多个连续子载波; 如图 6D所示, legacy PDCCH占用 2个 OFDM Symbol (图 6D中填充斜线的部分 ), 下行子帧 的第一个 slot和第二个 slot分别构成各自的物理资源区域块, RB对应的其中一个物理资源 块区域位于下行子帧的第一个 slot上,且在时域上占用第一个 slot内的 5个 OFDM symbol, 在频域上 3个子载波。
本发明实施例中, 上述步骤 402中, 将需要在所述 E-PDCCH上传输的每个下行控制 信息 DCI承载到一个或多个 E-CCE中, 釆用以下方式:
针对每个 DCI,根据所述 DCI所需要的编码速率,确定出用于承载所述 DCI的 E-CCE 的数量; 以及, 从所述多个 E-CCE中选取相应数量的 E-CCE, 并在选取的所述相应数量 的 E-CCE中承载所述 DCI。
本发明实施例中, 上述步骤 402中, 将需要在所述 E-PDCCH上传输的每个下行控制 信息 DCI承载到一个或多个 E-CCE中, 还可釆用以下两种方式:
方式 1、 将需要传输的所有 DCI的调制符号进行级联, 并将级联得到的调制符号序列 划分为多个 SB ( Sub-block , 子块), 每个 SB包含数目相同的多个调制符号;
将所述多个 E-CCE对应的所有 E-RGE按照从低频到高频的顺序进行排序, 并对排序 后的所有 E-REG进行交织, 形成交织后的 E-REG序列;
将级联后的所有 SB按照先后顺序映射到交织后的相应的 E-REG序列中, 且同一 DCI 的多个 SB对应的多个 E-REG分别是归属于不同的 RB;
方式 2、 将所述多个 E-CCE对应的所有 E-RGE按照从低频到高频的顺序进行排序, 得到 E-REG序列;
将需要传输的所有 DCI的调制符号进行级联, 并将级联得到的调制符号序列划分为多 个 SB , 每个 SB包含数目相同的多个调制符号; 并对多个 SB进行交织, 得到 SB序列, 将所述 SB序列依次映射到排序后 E-REG序列中,且同一 DCI的多个 SB对应的多个 E-REG 分别是归属于不同的 RB。
为更清楚、 详细的对上述方式 1和方式 2进行描述, 针对上述方式 1和方式 2, 下面 分别给出两个具体的实例, 该两个实例中, 假设用于传输 E-PDCCH的 E-CCE的数量为 4 (分别用 E-CCE#1、E-CCE#2、E-CCE#3和 E-CCE#4表示),每个 E-CCE均包括四个 E-REG, 即总共包括 16 个 E-REG (分别用 E-REG#0、 E-REG#1、 ...、 E-REG#15 表示, 其中 E-REG#0~E-REG#3 归属于 同 一 RB , E-REG#4~E-REG#7 归属于 同 一 RB , E-REG#8~E-REG#11 归属于同一 RB , E-REG#12~E-REG#15 归属于同一 RB ), 需要在 E-PDCCH上传输的 DCI的数量为 4 (依次用 DCI#1、 DCI#2、 DCI#3和 DCI#4表示), 每 个 DCI包括 4个调制符号, 本实例中, 将四个 DCI对应的所有调制符号划分成 16个 SB, 每个 SB中包含一个调制符号,且 SB与 16个调制符号——对应(依次用 SB#0、 SB#1
SB#15表示)。
釆用上述方式 1时, 包括以下步骤:
步骤 Sal、 将 16个 E-REG按照从低频到高频的顺序进行排序, 得到 E-REG序列为 {E-REG#0, E-REG#1 , E-REG#15} , 如图 7A所示;
步骤 Sa2、 对排序后的 16 个 E-REG进行交织重排, 得到交织后的 E-REG序列为 { E-REG#0, E-REG#5 , E-REG#10, E-REG#15 , E-REG#1 , E-REG#6, E-REG#11 , E-REG#12, E-REG#2, E-REG#7, E-REG#8, E-REG#13 , E-REG#3 , E-REG#4, E-REG#9, E-REG#14}; 步骤 Sa2, 根据交织后的 E-REG序列, 将 16个 E-REG进行聚合构成四个 E-CCE; 如 图 7A所示, E-REG#0、 E-REG#5、 E-REG#10和 E-REG#15聚合构成 E-CCE#0; E-REG#K E-REG#6、 E-REG#11和 E-REG#12聚合构成 E-CCE#1 ; E-REG#2、 E-REG#7、 E-REG#8 和 E-REG#13聚合构成 E-CCE#2; E-REG#3、 E-REG#4、 E-REG#9和 E-REG#14聚合构成 E-CCE#30
步骤 Sa3、 将需要传输的四个 DCI对应的 16个 SB, 按照序列按照顺序依次映射到交 织后的 16个 E-REG上, 即 SB#0~SB#15分别映射到 E-REG#0~E-REG#15上。
釆用上述方式 2时, 包括以下步骤:
步骤 Sbl、 将 16个 E-REG按照从低频到高频的顺序进行排序, 得到 E-REG序列为 {E-REG#0, E-REG#1 , E-REG#15} , 如图 7B所示;
步骤 Sb2、 将四个 DCI对应的 16个 SB进行级联, 得到级联后的 SB序列 {SB#0, SB#1 , SB#15};
步骤 Sb3、对排序后的 16个 SB进行交织重排,得到重交织后的 SB序列 {SB#0, SB#4, SB#8, SB#12, SB#13 , SB#1 , SB#5 , SB#9, SB#10, SB#14, SB#2, SB#6, SB#7, SB#11 , SB#15 , #SB3};
步骤 Sb4、 居步骤 SB1得到的排序后的 E-REG序列,对 16个 E-REG进行聚合构成 得到四个 E-CCE, 如图 7B所示, E-REG#0、 E-REG#5、 E-REG#10和 E-REG#15聚合构成 E-CCE#0; E-REG# 1、 E-REG#6、 E-REG# 11和 E-REG# 12聚合构成 E-CCE# 1; E-REG#2、 E-REG#7、 E-REG#8和 E-REG#13聚合构成 E-CCE#2; E-REG#3、 E-REG#4、 E-REG#9和 E-REG#14聚合构成 E-CCE#3;
步骤 Sb5、 将交织重排后的 16个 SB按照序列按照顺序依次映射到排序后的 16个 E-REG上, 即 SB#0、 SB#4、 SB#8和 SB#12依次映射到 E-REG#0~E-REG#3上; SB#13、 SB#1、 SB#5和 SB#9依次映射到 E-REG#4~E-REG#7上; SB#10、 SB#14、 SB#2和 SB#6 依次映射到 E-REG#8~E-REG#11 上; SB#7、 SB#11、 SB#15 和#883 依次映射到 E-REG#12~E-REG#14上。
上述实例中对多个 E-REG进行交织的方式只是一个具体的实例, 并不仅限于如图 7A 所示的交织方式, 还可以根据实际需要灵活设置, 如可以根据当前子帧编号确定或者由当 前小区 ID确定, 在此不再——列举; 同理, 上述实例中, 对多个 SB进行交织的方式只是 一个具体的实例, 并不仅限于如图 7B所示的交织方式, 还可以根据实际需要灵活设置, 如可以才 居当前子帧编号确定或者由当前小区 ID确定, 在此不再——列举。
基于前述基于基站侧的控制信息的传输, 本发明实施例还提供一种基于终端侧的控制 信息接收方法, 该方法流程如图 8所示, 包括:
步骤 801、接收传输 E-PDCCH的多个 E-CCE,每个 E-CCE中包含相同数量的 E-REG, 且每个 E-CCE包含的多个 E-REG分别归属于不同的 RB。
步骤 802、 从所述多个 E-CCE中获取每个需要在所述 E-PDCCH上传输的 DCI。
本发明实施例中, 用于传输所述 E-PDCCH的多个 E-CCE为: 通过将用于传输所述 E-PDCCH的多个 RB对应的所有 E-REG聚合构成的多个 E-CCE,其中所述每个 E-CCE包 含相同数量的 E-REG,且每个 E-CCE包含的多个 E-REG分别归属于不同的频率资源块 RB。
所述块 RB由基站分配给 UE, 且所述频率资源块离散分布在系统带宽内。
本发明实施例中, 每个 RB对应的 E-REG为所述 RB的其中一个物理资源区域块中的 所有可用的 RE确定的 E-REG, 所述可用的 RE为所述物理资源区域块中除用于传输传统 PDCCH和参考信号的 RE之外的 RE;
所述物理资源区域块,在时域上占用一个 PRB pair中除传统 PDCCH占用的 OFDM符 号之外的所有 OFDM符号, 且在频域上占用所述 RB的所有子载波; 或者,
所述物理资源区域块, 在时域占用一个 PRB 中除传统 PDCCH占用的 OFDM符号之 外的所有 OFDM符号, 且在频域上占用所述 RB的所有子载波; 或者,
所述物理资源区域块,在时域上占用一个 PRB pair中除传统 PDCCH占用的 OFDM符 号之外的所有 OFDM符号, 且在频域上占用所述 RB的一个子载波或多个连续子载波; 或 者,
所述物理资源区域块, 在时域占用一个 PRB 中除传统 PDCCH占用的 OFDM符号之 外的所有 OFDM符号, 且在频域上占用所述 RB的一个子载波或多个连续子载波。 上述步骤 802中,在所述多个 E-CCE上获取需要在 E-PDCCH上传输的至少一个 DCI, 包括:
对所述多个 E-CCE对应的 E-REG序列进行解交织, 以得到按照从低频到高频的顺序 进行排序的多个 E-REG, 并依次从该多个 E-REG分别获取承载的多个 SB , 并从所述多个 SB中获取所述至少一个 DCI所对应的调制符号, 从而得到所述至少一个 DCI;
或者, 从所述多个 E-CCE对应的按照从低频到高频的顺序进行排序的多个 E-REG中 分别获取承载的多个 SB, 并对所述多个 SB进行解交织之后, 得到 SB序列, 并从所述 SB 序列中获取所述至少一个 DCI所对应的调制符号, 从而得到所述至少一个 DCI。
基于前述传输控制信息的方法, 本发明实施例还提供一种传输控制信息的装置, 该装 置可以设置在基站中, 该装置的结构可如图 9所示, 包括:
E-CCE确定单元 91 , 用于确定传输 E-PDCCH的多个 E-CCE, 每个 E-CCE包含相同 数量的 E-REG, 且每个 E-CCE包含的多个 E-REG分别归属于不同的频率资源块 RB; 信息映射单元 92,用于将需要在所述 E-PDCCH上传输的每个 DCI承载到一个或多个 E-CCE中;
信息传输单元 93 , 用于传输承载有 DCI的 E-CCE。
较佳地, 所述 E-CCE确定单元 91确定传输所述 E-PDCCH的多个 E-CCE, 具体用于: 确定出用于传输所述 E-PDCCH的多个 RB;
针对所述多个 RB中的每个 RB,确定出与所述每个 RB对应的一个或多个 E-REG;依 此, 确定出所述多个 RB对应的所有 E-REG;
将所述多个 RB对应的所有 E-REG聚合构成多个 E-CCE。
较佳地, E-CCE确定单元 91确定出所述 RB对应的 E-REG, 具体用于:
将所述每个 RB中的其中一个物理资源区域块中的所有可用的 RE确定为一个 E-REG, 所述可用的 RE为所述物理资源区域块中除用于传输传统 PDCCH和参考信号的 RE之外的
RE;
所述物理资源区域块, 在时域上占用一个 PRB pair中除传统 PDCCH占用的正交频分 复用 OFDM符号之外的所有 OFDM符号, 且在频域上占用所述 RB的所有子载波; 或者, 所述物理资源区域块, 在时域占用一个 PRB 中除传统 PDCCH占用的 OFDM符号之 外的所有 OFDM符号, 且在频域上占用所述 RB的所有子载波; 或者,
所述物理资源区域块,在时域上占用一个 PRB pair中除传统 PDCCH占用的 OFDM符 号之外的所有 OFDM符号, 且在频域上占用所述 RB的一个子载波或多个连续子载波; 或 者,
所述物理资源区域块, 在时域占用一个 PRB 中除传统 PDCCH占用的 OFDM符号之 外的所有 OFDM符号, 且在频域上占用所述 RB的一个子载波或多个连续子载波。 较佳地, 信息映射单元 92, 具体用于: 针对每个 DCI, 根据所述 DCI所需要的编码速 率, 确定出用于承载所述 DCI的 E-CCE的数量; 以及, 从所述多个 E-CCE中选取相应数 量的 E-CCE, 并在选取的所述相应数量的 E-CCE中承载所述 DCI。
较佳地,所述信息映射单元 92,具体用于:将需要传输所有 DCI的调制符号进行级联, 并将级联得到的调制符号序列划分为多个 SB , 每个 SB包含数目相同的多个调制符号; 将所述多个 E-CCE对应的所有 E-RGE按照从低频到高频的顺序进行排序, 并对排序 后的所有 E-REG进行交织, 形成交织后的 E-REG序列;
将级联后的所有 SB按照先后顺序映射到交织后的相应的 E-REG序列中, 且同一 DCI 的多个 SB对应的多个 E-REG分别是归属于不同的 RB。
所述信息映射单元 92, 具体用于: 将所述多个 E-CCE对应的所有 E-RGE按照从低频 到高频的顺序进行排序, 得到 E-REG序列;
将需要传输的所有 DCI的调制符号进行级联, 并将级联得到的调制符号序列划分为多 个 SB , 每个 SB包含数目相同的多个调制符号; 并对多个 SB进行交织, 得到 SB序列, 将所述 SB序列依次映射到排序后 E-REG序列中,且同一 DCI的多个 SB对应的多个 E-REG 分别是归属于不同的 RB。
基于前述控制信息的接收方法, 本发明实施例还提供一种用户终端设备, 该用户终端 设备的结构如图 10所示, 包括:
接收单元 101 , 用于接收传输 E-PDCCH的多个 E-CCE, 每个 E-CCE中包含相同数量 的 E-REG, 且每个 E-CCE包含的多个 E-REG分别归属于不同的 RB;
控制信息获取单元 102, 用于从所述多个 E-CCE中获取需要在所述 E-PDCCH上传输 的至少一个 DCI。
较佳地, 控制信息获取单元 102, 具体用于:
对所述多个 E-CCE对应的 E-REG序列进行解交织, 以得到按照从低频到高频的顺序 进行排序的多个 E-REG, 并依次从该多个 E-REG分别获取承载的多个 SB , 并从所述多个 SB中获取所述至少一个 DCI所对应的调制符号, 从而得到所述至少一个 DCI。
较佳地, 控制信息获取单元 102, 具体用于:
从所述多个 E-CCE对应的按照从低频到高频的顺序进行排序的多个 E-REG中分别获 取承载的多个 SB , 并对所述多个 SB进行解交织之后, 得到 SB序列, 并从所述 SB序列 中获取所述至少一个 DCI所对应的调制符号, 从而得到所述至少一个 DCI。
本发明实施例中, 一方面, 确定传输 E-PDCCH的多个 E-CCE, 所述每个 E-CCE包含 相同数量的 E-REG, 且每个 E-CCE包含的多个 E-REG分别归属于不同的 RB; 将需要在 所述 E-PDCCH上传输的每个下行控制信息 DCI承载到至少一个 E-CCE中进行传输。釆用 本发明技术方案, 由于每个 E-CCE包含的多个 E-REG分别归属于不同的频率资源块 RB , 因此, 将每个需要传输的 DCI承载到至少一个 E-CCE上, 可以实现将 DCI的调制符号分 集到不同的 E-REG上传输,从而实现将一条 DCI在 E-PDCCH对应的多个不同频段资源上 传输,提高 DCI传输的稳定性和可靠性; 另一方面,基于频率分集的 E-PDCCH传输方法, 能够充分的利用频率分集传输 DCI, 并随机化小区间千扰, 且实现筒单。
显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和 范围。 这样, 倘若对本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之 内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种传输控制信息的方法, 其特征在于, 包括:
确定传输增强物理下行控制信道 E-PDCCH 的多个增强控制信道单元 E-CCE, 每个 E-CCE包含相同数量的增强资源单元组 E-REG,且每个 E-CCE包含的多个 E-REG分别归 属于不同的频率资源块 RB;
将需要在所述 E-PDCCH上传输的每个下行控制信息 DCI承载到至少一个 E-CCE中进 行传输。
2、如权利要求 1所述的方法,其特征在于,确定出传输所述 E-PDCCH的多个 E-CCE, 包括:
确定用于传输所述 E-PDCCH的多个频率资源块 RB;
确定每个 RB对应的一个或多个 E-REG;
将确定出的所有 E-REG聚合构成多个 E-CCE。
3、 如权利要求 1或 2所述的方法, 其特征在于, 所述频率资源块 RB由基站分配给 UE, 且所述频率资源块离散分布在系统带宽内。
4、 如权利要求 2所述的方法, 其特征在于, 确定每个 RB对应的 E-REG, 包括: 将 该 RB中的一个物理资源区域块中的所有可用的资源单元 RE确定为一个 E-REG, 所述可 用的 RE为所述物理资源区域块中除用于传输传统 PDCCH和参考信号的 RE之外的 RE; 其中, 所述物理资源区域块, 在时域上占用一个物理资源块对 PRB pair 中除传统 PDCCH占用的 OFDM符号之外的所有 OFDM符号,且在频域上占用所述 RB的所有子载 波; 或者,
所述物理资源区域块, 在时域占用一个物理资源块 PRB 中除传统 PDCCH 占用的 OFDM符号之外的所有 OFDM符号, 且在频域上占用所述 RB的所有子载波; 或者, 所述物理资源区域块,在时域上占用一个 PRB pair中除传统 PDCCH占用的 OFDM符 号之外的所有 OFDM符号, 且在频域上占用所述 RB的一个子载波或多个连续子载波; 或 者,
所述物理资源区域块, 在时域占用一个 PRB 中除传统 PDCCH占用的 OFDM符号之 外的所有 OFDM符号, 且在频域上占用所述 RB的一个子载波或多个连续子载波。
5、 如权利要求 1所述的方法, 其特征在于, 将需要在所述 E-PDCCH上传输的每个下 行控制信息 DCI承载到至少一个 E-CCE中, 包括:
针对每个 DCI,根据所述 DCI所需要的编码速率,确定出用于承载所述 DCI的 E-CCE 的数量; 以及, 从所述多个 E-CCE中选取相应数量的 E-CCE, 并在选取的 E-CCE中承载 所述 DCI。
6、 如权利要求 1所述的方法, 其特征在于, 将需要在所述 E-PDCCH上传输每个下行 控制信息 DCI承载到至少一个 E-CCE中, 包括:
将需要传输的所有 DCI的调制符号进行级联, 并将级联得到的调制符号序列划分为多 个子块 SB , 每个 SB包含数目相同的多个调制符号;
将所述多个 E-CCE对应的所有 E-RGE按照从从低频到高频的顺序进行排序, 并对排 序后的所有 E-REG进行交织, 形成交织后的 E-REG序列;
将级联后的所有 SB按照先后顺序映射到交织后的相应的 E-REG序列中, 且同一 DCI 的多个 SB对应的多个 E-REG分别是归属于不同的 RB。
7、 如权利要求 1所述的方法, 其特征在于, 将需要在所述 E-PDCCH上传输的每个下 行控制信息 DCI承载到一个或多个 E-CCE中, 包括:
将所述多个 E-CCE对应的所有 E-RGE按照从低频到高频的顺序进行排序,得到 E-REG 序列;
将需要传输的所有 DCI的调制符号进行级联, 并将级联得到的调制符号序列划分为多 个 SB, 每个 SB包含数目相同的多个调制符号; 并对多个 SB进行交织, 得到 SB序列, 将所述 SB序列依次映射到排序后的 E-REG序列中, 且同一 DCI的多个 SB对应的多个 E-REG分别归属于不同的 RB。
8、 如权利要求 6或 7所述的方法, 其特征在于, 对排序后的 E-REG序列进行交织或 者对 SB序列进行交织的方式, 是根据当前子帧编号确定的或者是由当前小区 ID确定的。
9、 一种接收控制信息的方法, 其特征在于, 包括:
在传输增强物理下行控制信道 E-PDCCH的多个增强控制信道单元 E-CCE上接收需要 在所述 E-PDCCH上传输的至少一个 DCI,每个 DCI承载在至少一 E-CCE上;每个 E-CCE 中包含相同数量的增强资源单元组 E-REG, 且每个 E-CCE包含的多个 E-REG分别归属于 不同的频率资源块 RB。
10、 如权利要求 9所述的方法, 其特征在于, 传输所述 E-PDCCH的多个 E-CCE为: 通过将用于传输所述 E-PDCCH的多个 RB对应的所有 E-REG聚合构成的多个 E-CCE。
11、 如权利要求 9或 10所述的方法, 其特征在于, 所述频率资源块 RB由基站分配给 UE, 且所述频率资源块离散分布在系统带宽内。
12、 如权利要求 9所述的方法, 其特征在于, 每个 RB对应的 E-REG为该 RB中一个 物理资源区域块中的所有可用的资源单元 RE确定的 E-REG, 所述可用的 RE为所述物理 资源区域块中除用于传输传统 PDCCH和参考信号的 RE之外的 RE;
其中, 所述物理资源区域块, 在时域上占用一个物理资源块对 PRB pair 中除传统 PDCCH占用的 OFDM符号之外的所有 OFDM符号,且在频域上占用所述 RB的所有子载 波; 或者, 所述物理资源区域块, 在时域占用一个物理资源块 PRB 中除传统 PDCCH 占用的 OFDM符号之外的所有 OFDM符号, 且在频域上占用所述 RB的所有子载波; 或者, 所述物理资源区域块,在时域上占用一个 PRB pair中除传统 PDCCH占用的 OFDM符 号之外的所有 OFDM符号, 且在频域上占用所述 RB的一个子载波或多个连续子载波; 或 者,
所述物理资源区域块, 在时域占用一个 PRB 中除传统 PDCCH占用的 OFDM符号之 外的所有 OFDM符号, 且在频域上占用所述 RB的一个子载波或多个连续子载波。
13、 如权利要求 9所述的方法, 其特征在于, 在传输所述 E-PDCCH的多个 E-CCE上 接收需要在所述 E-PDCCH上传输的至少一个 DCI, 包括:
对所述多个 E-CCE对应的 E-REG序列进行解交织, 以得到按照从低频到高频的顺序 进行排序的多个 E-REG, 并依次从该多个 E-REG分别获取承载的多个子块 SB , 并从所述 多个 SB中获取所述至少一个 DCI所对应的调制符号, 从而得到所述至少一个 DCI。
14、 如权利要求 9所述的方法, 其特征在于, 在传输所述 E-PDCCH的多个 E-CCE上 接收需要在所述 E-PDCCH上传输的至少一个 DCI, 包括:
从所述多个 E-CCE对应的按照从低频到高频的顺序进行排序的多个 E-REG中分别获 取承载的多个 SB, 并对所述多个 SB进行解交织之后, 得到 SB序列, 并从所述 SB序列 中获取所述至少一个 DCI所对应的调制符号, 从而得到所述至少一个 DCI。
15、 一种传输控制信息的装置, 其特征在于, 包括:
增强物理下行控制信道 E-CCE 确定单元, 用于确定传输增强物理下行控制信道 E-PDCCH的多个 E-CCE, 每个 E-CCE 包含相同数量的增强资源单元组 E-REG, 且每个 E-CCE包含的多个 E-REG分别归属于不同的频率资源块 RB;
信息映射单元, 用于将需要在所述 E-PDCCH上传输的每个下行控制信息 DCI承载到 至少一个 E-CCE中;
信息传输单元, 用于传输承载有 DCI的 E-CCE。
16、 如权利要求 15所述的装置, 其特征在于, 所述 E-CCE确定单元确定出传输所述
E-PDCCH的多个 E-CCE, 具体用于:
确定出用于传输所述 E-PDCCH的多个频率资源块 RB;
针对所述多个 RB中的每个 RB, 确定出每个 RB对应的一个或多个 E-REG; 依此, 确 定出所述多个 RB对应的所有 E-REG;
将确定出的所有 E-REG聚合构成多个 E-CCE。
17、 如权利要求 16所述的装置, 其特征在于, 所述 E-CCE确定单元确定出每个 RB 对应的 E-REG, 具体用于:
对于每个 RB,将该 RB中的其中一个物理资源区域块中的所有可用的 RE确定为一个 E-REG, 所述可用的资源单元 RE为所述物理资源区域块中除用于传输传统 PDCCH和参 考信号的 RE之外的 RE;
其中, 所述物理资源区域块, 在时域上占用一个物理资源块对 PRB pair 中除传统 PDCCH 占用的正交频分复用 OFDM符号之外的所有 OFDM符号, 且在频域上占用所述 RB的所有子载波; 或者,
所述物理资源区域块, 在时域占用一个物理资源块 PRB 中除传统 PDCCH 占用的 OFDM符号之外的所有 OFDM符号, 且在频域上占用所述 RB的所有子载波; 或者, 所述物理资源区域块,在时域上占用一个 PRB pair中除传统 PDCCH占用的 OFDM符 号之外的所有 OFDM符号, 且在频域上占用所述 RB的一个子载波或多个连续子载波; 或 者,
所述物理资源区域块, 在时域占用一个 PRB 中除传统 PDCCH占用的 OFDM符号之 外的所有 OFDM符号, 且在频域上占用所述 RB的一个子载波或多个连续子载波。
18、 如权利要求 15 所述的装置, 其特征在于, 所述承载单元, 具体用于: 针对每个 DCI, 根据所述 DCI所需要的编码速率, 确定出用于承载所述 DCI的 E-CCE的数量; 以 及, 从所述多个 E-CCE中选取相应数量的 E-CCE, 并在选取的 E-CCE中承载所述 DCI。
19、 如权利要求 15 所述的装置, 其特征在于, 所述承载单元, 具体用于: 将需要传 输的所有 DCI的调制符号进行级联, 并将级联得到的调制符号序列划分为多个子块 SB , 每个 SB包含数目相同的多个调制符号;
将所述多个 E-CCE对应的所有 E-RGE按照从低频到高频的顺序进行排序, 并对排序 后的所有 E-REG进行交织, 形成交织后的 E-REG序列;
将级联后的所有 SB按照先后顺序映射到交织后的相应的 E-REG序列中, 且同一 DCI 的多个 SB对应的多个 E-REG分别是归属于不同的 RB。
20、 如权利要求 15 所述的装置, 其特征在于, 所述承载单元, 具体用于: 将所述多 个 E-CCE对应的所有 E-RGE按照从低频到高频的顺序进行排序, 得到 E-REG序列; 将需要传输的所有 DCI的调制符号进行级联, 并将级联得到的调制符号序列划分为多 个 SB , 每个 SB包含数目相同的多个调制符号; 并对多个 SB进行交织, 得到 SB序列, 将所述 SB序列依次映射到排序后的 E-REG序列中, 且同一 DCI的多个 SB对应的多个 E-REG分别是归属于不同的 RB。
21、 一种接收控制信息的装置, 其特征在于, 包括:
接收单元, 用于接收传输增强物理下行控制信道 E-PDCCH的多个增强控制信道单元
E-CCE, 每个 E-CCE中包含相同数量的增强资源单元组 E-REG, 且每个 E-CCE包含的多 个 E-REG分别归属于不同的频率资源块 RB;
控制信息获取单元, 用于从所述多个 E-CCE中获取需要在所述 E-PDCCH上传输的至 少一个下行控制信息 DCI。
22、 如权利要求 21所述的装置, 其特征在于, 所述控制信息获取单元, 具体用于: 对所述多个 E-CCE对应的 E-REG序列进行解交织, 以得到按照从低频到高频的顺序 进行排序的多个 E-REG, 并依次从该多个 E-REG分别获取承载的多个 SB , 并从所述多个 子块 SB中获取所述至少一个 DCI所对应的调制符号, 从而得到所述至少一个 DCI。
23、 如权利要求 21所述的装置, 其特征在于, 所述控制信息获取单元, 具体用于: 从所述多个 E-CCE对应的按照从低频到高频的顺序进行排序的多个 E-REG中分别获 取承载的多个 SB, 并对所述多个 SB进行解交织之后, 得到 SB序列, 并从所述 SB序列 中获取所述至少一个 DCI所对应的调制符号, 从而得到所述至少一个 DCI。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9961676B2 (en) 2011-12-23 2018-05-01 Fujitsu Limited Method and apparatus for resource mapping of a physical downlink control channel

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102958183B (zh) * 2011-08-18 2015-09-09 华为技术有限公司 传输增强下行控制信道的方法、设备和系统
CN102420685B (zh) 2011-11-07 2014-08-06 电信科学技术研究院 一种传输控制信息的方法及装置
CN106788929B (zh) 2012-01-09 2020-01-17 华为技术有限公司 一种控制信道资源映射方法、基站及用户设备
PL2797372T3 (pl) 2012-01-19 2019-07-31 Sun Patent Trust Urządzenie nadawcze i sposób prowadzenia transmisji dla ulepszonego fizycznego kanału sterowania downlinkiem
CN103326839B (zh) * 2012-03-22 2016-12-07 华为技术有限公司 增强的物理下行控制信道的发送、接收方法和装置
CN106059738B (zh) 2012-05-10 2019-11-26 华为终端有限公司 在增强型物理下行控制信道上传输信息的方法及设备
CN103391563B (zh) * 2012-05-11 2018-06-08 中兴通讯股份有限公司 下行控制信息发送方法、检测方法、基站及用户设备
CN110266458B (zh) * 2012-05-18 2022-07-12 索尼公司 无线通信系统中的通信装置和通信方法
EP2853054A4 (en) * 2012-05-21 2015-07-15 Broadcom Corp IMPROVED CONTROL CHANNEL INTERLACING HAVING DISTRIBUTED PHYSICAL RESOURCE BLOCKS
CN104135356B (zh) * 2012-07-26 2017-06-06 华为终端有限公司 控制信道传输方法及设备
US9444608B2 (en) 2012-07-26 2016-09-13 Huawei Device Co., Ltd. Control channel transmission method and apparatus to implement transmission of ePDCCHs through an eREG in a unit physical resource block
WO2014015501A1 (zh) * 2012-07-26 2014-01-30 华为终端有限公司 控制信道传输方法及设备
CA2911048C (en) * 2012-07-27 2018-01-23 Huawei Device Co., Ltd. Method and apparatus for transmitting control channel
WO2014019144A1 (zh) * 2012-07-31 2014-02-06 华为技术有限公司 控制信道传输方法及基站、终端
CN103748849B (zh) * 2012-07-31 2017-06-06 华为技术有限公司 控制信道传输方法及基站、终端
CN103580834B (zh) 2012-07-31 2018-06-22 中兴通讯股份有限公司 ePDCCH发送、接收方法及装置、基站、用户设备
WO2014019181A1 (zh) 2012-08-01 2014-02-06 华为技术有限公司 一种控制信道传输方法及装置
WO2014019177A1 (zh) * 2012-08-01 2014-02-06 华为技术有限公司 控制信道的传输方法、基站及终端
CN104871589B (zh) * 2012-08-02 2019-03-01 华为技术有限公司 增强型物理下行控制信道传输方法及装置
CN103718630A (zh) 2012-08-02 2014-04-09 华为技术有限公司 增强型物理下行控制信道传输方法及设备
WO2014019208A1 (zh) 2012-08-02 2014-02-06 华为技术有限公司 传输控制信息的方法、装置及系统
CN103580838B (zh) * 2012-08-03 2016-09-14 电信科学技术研究院 增强的物理下行控制信道的发送及检测方法和设备
CN104145523B (zh) * 2012-08-03 2018-01-23 华为技术有限公司 信息传输方法及终端、基站
CN103580837B (zh) 2012-08-03 2019-01-22 中兴通讯股份有限公司 控制信令发送、检测方法及基站及终端
CN103580801B (zh) * 2012-08-06 2017-12-22 中国移动通信集团公司 一种增强控制信道单元e‑cce资源映射方法及设备
KR101574713B1 (ko) * 2012-09-14 2015-12-04 주식회사 케이티 송수신포인트의 제어 정보 전송 방법 및 그 송수신포인트, 단말의 제어 정보 수신 방법 및 그 단말
KR101562694B1 (ko) * 2012-09-18 2015-10-22 주식회사 케이티 송수신포인트의 제어 정보 전송 방법 및 그 송수신포인트, 단말의 제어 정보 수신 방법 및 그 단말
CN103687017B (zh) * 2012-09-21 2019-04-23 中兴通讯股份有限公司 ePDCCH传输方法及装置、基站、用户设备
WO2014047897A1 (zh) * 2012-09-28 2014-04-03 华为技术有限公司 资源分配方法、设备和系统,资源获取方法及设备
US8923880B2 (en) * 2012-09-28 2014-12-30 Intel Corporation Selective joinder of user equipment with wireless cell
CN104041165B (zh) * 2013-01-04 2018-05-04 华为技术有限公司 一种数据传输方法、装置、网络设备及用户设备
EP2946514B1 (en) 2013-01-18 2020-03-11 Huawei Technologies Co., Ltd. Methods and nodes in a wireless communication system
WO2015061987A1 (en) * 2013-10-30 2015-05-07 Qualcomm Incorporated Cross-carrier indication of uplink/downlink subframe configurations
US10708914B2 (en) * 2013-11-07 2020-07-07 Lg Electronics Inc. Method for transmitting and receiving downlink signal in wireless communication system and device for same
CN104202828B (zh) * 2014-03-21 2019-09-10 中兴通讯股份有限公司 控制信息的传输、接收方法、装置及系统
WO2017024563A1 (zh) * 2015-08-12 2017-02-16 华为技术有限公司 一种数据传输方法、装置及系统
MY195605A (en) * 2016-07-07 2023-02-02 Fraunhofer Ges Forschung Data Transmission in a Wireless Communication System with Reduced Latency
US11825482B2 (en) * 2016-10-03 2023-11-21 Qualcomm Incorporated Techniques for improved control channels
US10582397B2 (en) * 2016-11-09 2020-03-03 Qualcomm Incorporated Beam refinement reference signal transmissions during control symbol
CN108809572B (zh) 2017-05-04 2023-12-01 华为技术有限公司 通信方法和通信装置
US11096170B2 (en) * 2017-06-12 2021-08-17 Qualcomm Incorporated Multi-component interleaver design supporting coresets of different symbol length
CN109152041B (zh) 2017-06-16 2023-11-03 华为技术有限公司 信息传输的方法、终端设备和网络设备
WO2019028770A1 (zh) 2017-08-10 2019-02-14 华为技术有限公司 通信方法、终端设备和网络设备
CN110366249B (zh) * 2018-04-11 2022-10-28 展讯通信(上海)有限公司 下行控制信令的传输方法及装置
US11184132B2 (en) * 2018-11-14 2021-11-23 Mediatek Inc. Transmission configuration indication (TCI)—state indication for non-coherent joint transmission (NCJT) channel state information (CSI) reporting
CN112311514B (zh) * 2019-07-30 2022-04-12 华为技术有限公司 控制信息传输方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090083269A (ko) * 2008-01-29 2009-08-03 엘지전자 주식회사 무선 통신 시스템에서 pdcch 검색 방법
CN102082600A (zh) * 2009-12-01 2011-06-01 中兴通讯股份有限公司 中继链路下行控制信息配置方法及传输基站、中继站与方法
US20110269492A1 (en) * 2010-05-03 2011-11-03 Ping Wang Allocating a control channel for carrier aggregation
CN102420685A (zh) * 2011-11-07 2012-04-18 电信科学技术研究院 一种传输控制信息的方法及装置

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100913099B1 (ko) * 2008-01-07 2009-08-21 엘지전자 주식회사 분산형 가상자원블록 스케쥴링 방법
KR101667826B1 (ko) * 2008-11-04 2016-10-19 애플 인크. 제 1 캐리어에서 제 2, 다른 캐리어에서의 제어 정보를 표시하기 위해 다운링크 제어 구조를 제공하는 방법
US8463262B2 (en) * 2008-12-04 2013-06-11 Lg Electronics Inc. Method for receiving control information in wireless communication system and apparatus therefor
BR112012006948B1 (pt) * 2009-09-28 2021-04-27 Samsung Electronics., Ltd Método para estender uma região de pdcch e aparelho de ue para receber informação de dci
US8804586B2 (en) * 2010-01-11 2014-08-12 Blackberry Limited Control channel interference management and extended PDCCH for heterogeneous network
CN103518415B (zh) * 2011-02-11 2017-05-24 交互数字专利控股公司 用于增强型控制信道的系统和方法
CN102231913B (zh) * 2011-06-17 2015-08-19 电信科学技术研究院 一种分配和确定pdcch的方法、系统及设备
US9144070B2 (en) * 2011-07-26 2015-09-22 Lg Electronics Inc. Method and apparatus for transmitting control information in wireless communication system
EP2747319B1 (en) * 2011-08-16 2019-04-17 LG Electronics Inc. Method for base station to mulitiplex downlink control channel in wireless communication system and apparatus therefor
US9008035B2 (en) * 2011-09-29 2015-04-14 Futurewei Technologies, Inc. Wireless communication control channel systems and methods
RU2596839C2 (ru) * 2011-10-20 2016-09-10 Самсунг Электроникс Ко., Лтд. Способ и устройство для передачи и приема управляющей информации в системе беспроводной связи
EP2795861B1 (en) * 2011-10-28 2019-07-17 Samsung Electronics Co., Ltd. Search process for physical downlink control channels in a communication system
JP5856810B2 (ja) * 2011-11-02 2016-02-10 シャープ株式会社 基地局装置、移動局装置、無線通信方法、無線通信システムおよび集積回路
WO2013085335A1 (ko) * 2011-12-07 2013-06-13 엘지전자 주식회사 무선 통신 시스템에서 하향링크 제어 채널 송수신 방법 및 장치
CN103199974B (zh) * 2012-01-09 2018-03-23 中兴通讯股份有限公司 下行控制信息发送方法及装置
WO2013112972A1 (en) * 2012-01-27 2013-08-01 Interdigital Patent Holdings, Inc. Systems and/or methods for providing epdcch in a multiple carrier based and/or quasi-collated network
KR101939153B1 (ko) * 2012-01-30 2019-01-16 삼성전자 주식회사 CoMP 시스템에서 상향링크 제어채널 및 상향링크 데이터 채널 전송 방법 및 장치
US9215058B2 (en) * 2012-03-06 2015-12-15 Blackberry Limited Enhanced PHICH transmission for LTE-advanced
US9198181B2 (en) * 2012-03-19 2015-11-24 Blackberry Limited Enhanced common downlink control channels
US9113462B2 (en) * 2012-05-03 2015-08-18 Qualcomm Incorporated Resource mapping for ePDCCH in LTE
EP2667535A1 (en) * 2012-05-21 2013-11-27 Panasonic Corporation Common mapping of resource elements to enhanced resource element groups
CN103580834B (zh) * 2012-07-31 2018-06-22 中兴通讯股份有限公司 ePDCCH发送、接收方法及装置、基站、用户设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090083269A (ko) * 2008-01-29 2009-08-03 엘지전자 주식회사 무선 통신 시스템에서 pdcch 검색 방법
CN102082600A (zh) * 2009-12-01 2011-06-01 中兴通讯股份有限公司 中继链路下行控制信息配置方法及传输基站、中继站与方法
US20110269492A1 (en) * 2010-05-03 2011-11-03 Ping Wang Allocating a control channel for carrier aggregation
CN102420685A (zh) * 2011-11-07 2012-04-18 电信科学技术研究院 一种传输控制信息的方法及装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9961676B2 (en) 2011-12-23 2018-05-01 Fujitsu Limited Method and apparatus for resource mapping of a physical downlink control channel

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