WO2014186952A1 - 混合自动重传请求指示信息传输方法和装置 - Google Patents
混合自动重传请求指示信息传输方法和装置 Download PDFInfo
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- WO2014186952A1 WO2014186952A1 PCT/CN2013/075997 CN2013075997W WO2014186952A1 WO 2014186952 A1 WO2014186952 A1 WO 2014186952A1 CN 2013075997 W CN2013075997 W CN 2013075997W WO 2014186952 A1 WO2014186952 A1 WO 2014186952A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L1/1816—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of the same, encoded, message
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1887—Scheduling and prioritising arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1893—Physical mapping arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1896—ARQ related signaling
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- 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
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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- 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
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- 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
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- 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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a hybrid automatic repeat request indication information transmission method and apparatus.
- Background Art In a general mobile communication system, uplink data transmission of a UE is controlled by a base station to transmit scheduling signaling. Due to the fading of the channel, the base station may not be able to correctly decode the uplink data transmitted by the UE.
- the 3rd Generation Partner Project (3GPP) Long Term Evolution (LTE) Version 8 to Release 11 systems use Hybrid Automatic Repeat Request (Hybrid Automatic Repeat Request) HARQ) indicates HARQ indication information in the channel to indicate whether the base station correctly decodes the uplink data transmitted by the UE.
- Hybrid Automatic Repeat Request Hybrid Automatic Repeat Request
- the UE needs to demodulate the indication information in the physical HARQ indicator channel by using a Common Reference Signal (CRS) as a reference signal, and determine, according to the indication information, whether the uplink transmission data is Correct decoding, to determine whether it is necessary to retransmit the data that the base station failed to correctly decode before.
- CRS Common Reference Signal
- the CRS is no longer used for demodulation due to its inherent disadvantages.
- the demodulation of the system downlink data transmission uses the UE-specific Demodulation Reference Signal (DMRS), and the physical HARQ indicator channel of LTE Release 8 to Release 11 cannot be used again, so the base station cannot pass the
- DMRS Demodulation Reference Signal
- the HARQ indicator channel indicates whether the uplink transmission data of the UE is correct, and the UE cannot determine whether the uplink transmission data is correctly decoded by the base station.
- the base station needs to resend the new scheduling signaling.
- Embodiments of the present invention provide a hybrid automatic repeat request indication information transmission method and apparatus, which enable a UE to determine whether uplink uplink data is detected by detecting HARQ indication information transmitted by a base station. It is correctly decoded by the base station to decide whether to transmit new data or retransmit the previous data, which reduces the signaling load of the control channel of the system.
- an embodiment of the present invention provides a hybrid automatic repeat request indication information transmission method, including:
- selecting a part of the resources from the EPDCCH resource includes:
- a partial resource is selected from a physical resource block PRB pair of the EPDCCH resource.
- the sending the HARQ indication information to the UE by using the part of the resource includes:
- the resource is divided into at least two parts, and the number of resource elements RE included in each part is equal and not less than 2;
- the HARQ indication information after the sequence spread spectrum is repeatedly set on each part of the RE;
- the partial resources are transmitted to the UE.
- the dividing the part of the resources into the at least two parts includes:
- the partial resources are divided into at least two parts according to the required HARQ channel capacity, and the number of spreading sequences corresponding to the number of REs included in each part satisfies the required HARQ channel capacity.
- selecting a part of the resources from the EPDCCH resource includes:
- the sending, by the part of the resource, the HARQ indication information to the UE includes:
- each group includes REs in the at least two PRB pairs, and dividing each group into at least two parts, each part containing an equal number of REs and not less than 2, each The number of partially included REs corresponds to the number of spreading sequences and the number of groups is equal to the The number of ECCEs included in two less PRB pairs;
- the sequence-spread HARQ indication information is repeatedly set on the RE of each part in a group; the partial resources are transmitted to the UE.
- the method before the transmitting the part of the resource to the UE, the method further includes:
- the demodulation reference signal DMRS in the PRB pair in which the part is located is associated with the sequence-spread HARQ indication information set in the part.
- each PRB pair includes at least two parts of the one group; and the DMRS in the PRB pair in which the part is located Correlating with the sequence-spread HARQ indication information set in the part, including:
- the sequence-spread HARQ indication information set by the at least two DMRSs of the PRB pair and the at least two parts is separately associated.
- the at least two PRB pairs are located in an EPDCCH PRB set configured for the UE, Or located in a different EPDCCH PRB set configured for the UE.
- the selecting, by using the EPDCCH resource, the part of the resource includes:
- the number of REs corresponding to the number of REs included in the partial resources is equal to the number of ECCEs included in the one PRB pair multiplied by two.
- the sending the HARQ indication information to the UE by using the part of the resource includes:
- the partial resources are divided into at least one part, and the number of REs included in each part is equal and not less than 2, and the number of spreading sequences corresponding to the number of REs included in each part is equal to the number of ECCEs included in the one PRB pair. Multiply the number by 2;
- the sequence-spread HARQ indication information is repeatedly set on the RE of each part; and the partial resources are transmitted to the UE.
- the method before the transmitting the part of the resource to the UE, the method further includes:
- a DMRS signal of the one PRB pair is associated with the sequence-spread HARQ indication information.
- an embodiment of the present invention provides a hybrid automatic repeat request indication information transmission method, including:
- the selecting, by using the EPDCCH resource, a part of the resources includes:
- the number of REs is equal and not less than 2;
- the extracting the HARQ indication information from the part of the resources includes:
- the method before the performing channel estimation by using the demodulation reference signal DMRS corresponding to each part of the at least two parts, the method further includes:
- the selecting at least two parts from the EPDCCH resource includes:
- the selecting at least two parts from the EPDCCH resource includes:
- the at least two parts are selected from a PRB pair of the EPDCCH resource.
- the embodiment of the present invention provides a hybrid automatic repeat request (HQQ) information transmission apparatus, including: an EPDCCH resource allocation module, configured to allocate an enhanced physical downlink control channel EPDCCH resource to the UE;
- HQQ hybrid automatic repeat request
- a part of the resource selection module configured to select a part of the resource from the EPDCCH resource, where the indication information sending module is configured to send the HARQ indication information to the UE by using the part of the resource.
- the part resource selection module is specifically configured to: select a part of resources from a physical resource block PRB pair of the EPDCCH resource.
- the indication information sending module includes:
- a first part dividing unit configured to divide the part of the resources into at least two parts, and the number of resource elements RE included in each part is equal and not less than 2;
- a first sequence spread spectrum unit configured to: according to the number of REs included in each part
- the HARQ indication information performs sequence spreading of the corresponding bit
- a first information repetition setting unit configured to repeatedly set the sequence-rendered HARQ indication information on each part of the RE
- a first part of the resource transmission unit configured to transmit the part of the resource to the UE.
- the part dividing unit is specifically configured to divide the part of the resource into at least two parts according to a required HARQ channel capacity.
- the number of spreading sequences corresponding to the number of REs included in each part satisfies the required HARQ channel capacity.
- the part resource selection module is specifically configured to select a part of resources from at least two PRB pairs of the EPDCCH resource.
- the indication information sending module includes:
- a second part dividing unit configured to divide the partial resources into at least one group, each group includes REs in the at least two PRB pairs, and each group is divided into at least two parts, and each part includes an RE
- the number of the number of spreading sequences corresponding to the number of groups is equal to the number of ECCEs included in the at least two PRB pairs multiplied by 2;
- a second sequence spreading unit configured to perform sequence spreading of the corresponding bit on the HARQ indication information according to the number of REs included in each part
- a second information repetition setting unit configured to repeatedly set the sequence-rendered HARQ indication information on the RE of each part in a group.
- a second part of the resource transmission unit configured to transmit the part of the resource to the UE.
- the method further includes:
- a first indication information association module configured to use a demodulation reference in a PRB pair of the part in the part of the one group before the second part resource transmission unit transmits the part of the resource to the UE
- the signal DMRS is associated with the sequence-spread HARQ indication information set in the portion.
- each PRB pair includes at least two parts of the one group, and the first indication information association module is specifically configured to target At least two parts of the one of the PRB pairs are respectively associated with the at least two DMRS signals of the PRB pair and the sequence-spread HARQ indication information set by the at least two parts.
- the at least two PRB pairs are located in an EPDCCH PRB set configured for the UE, Or located in a different EPDCCH PRB set configured for the UE.
- the part resource selection module is specifically configured to select a part of resources from a PRB pair of the EPDCCH resource.
- the indication information sending module includes:
- a third part dividing unit configured to divide the part of the resource into at least one part, each part
- the number of included REs is equal and not less than 2, and the number of spreading sequences corresponding to each part of the number of spreading sequences is equal to the number of ECCEs included in the one PRB pair multiplied by 2;
- a third sequence spreading unit configured to: according to the number of REs included in each part
- the HARQ indication information performs sequence spreading of the corresponding bit
- a third information repetition setting unit configured to repeatedly set the sequence-rendered HARQ indication information on the RE of each part
- a third part of the resource transmission unit configured to transmit the part of the resource to the UE.
- the method further includes:
- a second indication information association module configured to use one of the one PTRS and the sequence-spread HARQ indication information before the third part resource transmission unit transmits the part of the resource to the UE Make an association.
- the embodiment of the present invention provides a hybrid automatic repeat request HARQ indication information transmission apparatus, including:
- An EPDCCH resource receiving module configured to receive an enhanced physical downlink control channel EPDCCH resource
- a part of the resource selection module configured to select a part of the resource from the EPDCCH resource
- an indication information extraction module configured to extract HARQ indication information from the part of the resource.
- the part resource selection module is specifically configured to select at least two parts from the EPDCCH resource, and the number of resource elements RE included in each part is equal and not less than 2;
- the indication information extraction module is specifically configured to perform channel estimation according to the demodulation reference signal DMRS corresponding to each part of the at least two parts, and perform soft demodulation on each part separately to obtain soft information of each part; After the soft information of each part is combined, the sequence despreading is performed according to the number of REs included in each part to obtain the HARQ indication information; or
- a second possible implementation manner Also includes:
- a DMRS extraction module configured to: before the indication information extraction module separately performs channel estimation according to the demodulation reference signal DMRS corresponding to each part of the at least two parts, extract each part of the corresponding DMRS from the PRB pair to which each part belongs.
- the part of the resource selection module is specifically used for at least two physical resource blocks PRB from the EPDCCH resource.
- the at least two portions are selected from the pair, the at least two portions including the REs of the two PRB pairs.
- the part of the resource selection module is specifically configured to select the one of the PRB pairs of the EPDCCH resource. At least two parts.
- the method and device for transmitting the hybrid automatic repeat request indication information provided by the embodiment of the present invention, by allocating the enhanced physical downlink control channel EPDCCH resource to the UE, selecting some resources from the EPDCCH resource, and transmitting the HARQ indication information to the UE through part of the resource, thereby
- the base station can transmit the HARQ indication information to the UE by using the partial resource selected from the EPDCCH resource, and the UE can determine whether the uplink transmission data is correctly decoded by the base station by detecting the HARQ indication information transmitted by the base station, thereby determining whether to send new data or Before the data is transmitted, the base station does not need to resend the new scheduling signaling to control the data before the UE retransmits, thus reducing the signaling load of the control channel of the system.
- FIG. 1 is a flowchart of a method for transmitting HARQ indication information according to Embodiment 1 of the present invention
- FIG. 2 is a flowchart of a method for transmitting HARQ indication information according to Embodiment 2 of the present invention
- FIG. 4A is a flowchart of a method for transmitting HARQ indication information according to Embodiment 4 of the present invention
- FIG. 4B is a schematic diagram of a specific implementation of S430 according to Embodiment 4 of the present invention
- 4C is a schematic diagram of another specific implementation of the S430 in the fourth embodiment of the present invention
- FIG. 4D is a schematic diagram of still another specific implementation of the S430 in the fourth embodiment of the present invention
- FIG. 5A is a flowchart of a method for transmitting HARQ indication information according to Embodiment 5 of the present invention
- FIG. 5B is a schematic diagram of a specific implementation of S530 according to Embodiment 5 of the present invention
- FIG. 5C is a schematic diagram of another specific implementation of S530 according to Embodiment 5 of the present invention
- FIG. 5D is a schematic diagram of still another specific implementation of S530 according to Embodiment 5 of the present invention
- FIG. 6 is provided according to Embodiment 6 of the present invention
- Figure 7 is a flowchart of a HARQ indication information transmission method according to Embodiment 7 of the present invention
- Figure 8 is a schematic diagram of a HARQ indication information transmission apparatus according to Embodiment 8 of the present invention
- 9 is a schematic diagram of a HARQ indication information transmission apparatus according to Embodiment 9 of the present invention
- FIG. 10 is a schematic structural diagram of a base station 1000 according to Embodiment 10 of the present invention.
- FIG. 11 is a schematic structural diagram of a UE1100 according to Embodiment 11 of the present invention.
- the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
- FIG. 1 is a flowchart of a method for transmitting HARQ indication information according to Embodiment 1 of the present invention. The method is performed by a base station. Referring to Figure 1, the method includes the following steps:
- the uplink data transmission of the UE is controlled by the base station to send the scheduling signaling to the UE, and the scheduling signaling sent by the base station to the UE needs to have the spectrum resource bearer. Therefore, the base station allocates the spectrum resource for carrying the scheduling signaling to the UE.
- an Enhanced Physical Downlink Control Channel (EPDCCH) resource is enhanced.
- the EPDCCH resource needs to be demodulated by the DMRS, and the scheduling signaling on the EPDCCH can use the Physical Resource Block (PRB) pair (Pair) occupied by the EPDCCH resource.
- PRB Physical Resource Block
- the upper DMRS is demodulated as a reference signal.
- selecting a part of the resources from the EPDCCH resource to transmit the HARQ indication information is equivalent to designing the HARQ indicator channel on the EPDCCH. Since the HARQ indication information is carried on the EPDCCH, the DMRS may also be used as the reference signal for demodulation.
- the HARQ indication information transmission method sends a HARQ indication information to a UE through a partial resource by selecting a part of resources from the EPDCCH resource. Therefore, the base station can transmit the HARQ indication information to the UE by using the partial resource selected from the EPDCCH resource, and the UE can determine whether the uplink transmission data is correctly decoded by the base station by detecting the HARQ indication information transmitted by the base station, thereby determining whether to send new data or Before retransmitting the previous data, the base station is not required to resend the new scheduling signaling to control the data before the UE retransmission, thus reducing the signaling load of the control channel of the system.
- FIG. 2 is a flowchart of a method for transmitting HARQ indication information according to Embodiment 2 of the present invention. The embodiment is further refined on the basis of the first embodiment. Referring to FIG. 2, the method in this embodiment may include the following steps:
- some resources may be selected from PRB pairs of EDPCCH resources.
- the PRB pair includes an EPDCCH, and the EPDCCH is composed of an ECCE.
- the partial resources are selected from the PRB pairs of the EDPCCH resources, so that the number of REs included in each enhanced control channel element ECCE of the PRB pair is equal after the selected resources are selected.
- each part contains 2 REs
- the S230 may include: dividing part of the resources into at least two parts according to the required HARQ channel capacity, and the number of the spreading sequences corresponding to the number of REs included in each part satisfies The required HARQ channel capacity.
- the number of the spreading sequence represents the capacity of the HARQ indicator channel, that is, how many HARQ fingers can be sent to the UE at the same time. Show information.
- the required HARQ channel capacity is usually set at the design time as the maximum capacity of the HARQ indicator channel that the EPDCCH resource can carry.
- the HARQ indication information after the sequence spreading is repeatedly set on each part of the RE. For example, if some resources are divided into 4 parts, each part contains 2 REs, then
- the HARQ indication information is subjected to 2-bit bit sequence spreading, that is, the original 1-bit HARQ indication information is spread to 2 bits, and then the spread 2-bit HARQ indication information is repeatedly set on the 4-part RE, that is, 2 of each part.
- the HARQ indication information is set to 2 times of HARQ indication information, and correspondingly, the power gain of the HARQ indication information is 8 times, which is equivalent to 9 dB.
- the partial resources may not be divided into at least two parts.
- the HARQ indication information may be subjected to 8-bit sequential sequence spreading in S240.
- the sequence-spread HARQ indication information is set on the 8 REs, and accordingly, the power gain of the HARQ indication information is also 8 times, which is equivalent to 9 dB.
- the method for transmitting HARQ indication information is to perform the sequence spreading of the corresponding bits of the number of REs included in each part of the HARQ indication information, and repeatedly set the HARQ indication information after sequence spreading on each part of the RE. , the power gain of the HARQ indication information is implemented. And because the base station transmits the sequence-spread HARQ indication information that is repeatedly set on each part of the RE to the UE, the UE can determine the HARQ indication information after the sequence spread of the REs of each part of the RE set by the base station.
- FIG. 3 is a flowchart of a method for transmitting HARQ indication information according to Embodiment 3 of the present invention. The embodiment is further refined on the basis of the second embodiment. Referring to FIG. 3, the method in this embodiment may include the following steps:
- a PRB pair is 12 consecutive subcarriers in the frequency domain and 14 OFDM symbols in the time domain, which can treat 12 consecutive subcarriers in the frequency domain and the first 7 OFDM symbols in the time domain as one PRB, frequency domain
- the 12 consecutive subcarriers on the last 7 OFDM symbols in the time domain are treated as another PRB.
- a PRB pair is an extended CP
- a PRB pair consists of 12 consecutive subcarriers in the frequency domain and 12 OFDM symbols in the time domain, which can be 12 consecutive subcarriers in the frequency domain, in the time domain.
- the first 6 OFDM symbols are treated as one PRB
- the 12 consecutive subcarriers in the frequency domain, and the last 6 OFDM symbols in the time domain are treated as another PRB.
- the PRB pair of each regular CP of the EPDCCH includes 4 Enhanced Control Channel Elements (ECCEs), and the PRB pair of each extended CP contains 2 ECCEs.
- each ECCE Both uplink data transmissions of one user can be scheduled, and each uplink data transmission can support two data block transmissions at most, requiring two HARQ indication information. Therefore, the PRB pair of each regular CP needs to meet the requirements of 4 users and a total of 8 HARQ indications.
- the PRB pair of each extended CP needs to meet the requirements of 2 users and 4 HARQ indications.
- each ECCE includes the same number of REs. To make the number of REs included in each ECCE of the PRB pair after puncturing equal, the same number of REs can be selected in each ECCE to form a HARQ indicator channel.
- the S340 specifically includes: dividing the punctured part of the resources into at least two parts, where the number of resource elements RE included in each part is equal and not less than 2; according to the number of REs included in each part, corresponding to the HARQ indication information Sequence spreading of the bit; repeating the sequence-spread HARQ indication information on each part of the RE; transmitting the part of the resource to the UE.
- S320 includes: selecting a part of resources from a PRB pair of the EPDCCH resource;
- the number of REs corresponding to the number of REs included in the partial resources is equal to the number of the ones
- the PRB multiplies the number of ECCEs contained by 2.
- the manner in which the HARQ indication information belonging to a certain UE is transmitted in a PRB pair is referred to as a local mode.
- the method further includes:
- the method for transmitting the HARQ indication information provided in this embodiment, by selecting a part of the resources from the PRB pair in the EPDCCH resource, and transmitting the HARQ indication information to the UE through the punctured part of the resource, so that the UE can detect the HARQ indication information transmitted by the base station. Determining whether the data transmitted in the uplink is correctly decoded by the base station, thereby determining whether to transmit new data or data before retransmission, and does not require the base station to resend new scheduling signaling to control data before retransmission of the UE, thereby reducing systemic The signaling load of the control channel.
- FIG. 4A is a flowchart of a method for transmitting HARQ indication information according to Embodiment 4 of the present invention.
- the embodiment is optimized based on the foregoing embodiment 2.
- the implementation scenario of the embodiment is as follows: Selecting at least two REs of the PRB pair as the selected partial resources.
- the method of this embodiment may include the following steps:
- the at least two PRB pairs may be located in one EPDCCH PRB set configured for the UE, or in a different EPDCCH PRB set configured for the UE.
- each group includes REs in at least two PRB pairs, and divide each group into at least two parts, and each part includes an equal number of REs and not less than 2, each part includes The number of spreading sequences corresponding to the number of spreading sequences is equal to the number of groups equal to the number of ECCEs included in at least two PRB pairs multiplied by two.
- the sequence-spread HARQ indication information is repeatedly set on the RE of each part in a group.
- the HARQ indication information belonging to a certain UE is transmitted in at least two PRB pairs.
- the way of losing is called the distribution method.
- the HARQ indication information transmission method provided in this embodiment is to divide a part of resources into at least one group by dividing a part of resources from two physical resource block PRB pairs in an EPDCCH resource, and divide each group into at least two parts according to each part.
- the number of REs included, the HARQ indication information is subjected to sequence spreading of the corresponding bits, and the sequence-spread HARQ indication information is repeatedly set on the RE of each part in a group to implement the power gain of the HARQ indication information.
- the base station transmits the sequence-spread HARQ indication information repeatedly set on each part of the RE to the UE, so that the UE can detect the HARQ indication information of the sequence-spreading set on each part of the RE by repeatedly detecting the transmission of the base station transmission. Determining whether the data transmitted by the uplink is correctly decoded by the base station, thereby determining whether to transmit new data or retransmit the previous data, and does not require the base station to resend new scheduling signaling to control data before retransmission of the UE, thereby reducing systemic The signaling load of the control channel.
- the method further includes: associating the DMRS in the PRB pair in the part with the HARQ indication information of the sequence spread in the part for the part in one group.
- Each PRB pair includes at least two parts of a group, and the DMRS in the PRB pair in which the part is located is associated with the HARQ indication information of the sequence spread in the part, which may be: for one group of one PRB pair At least two parts are respectively associated with the at least two DMRSs of the PRB pair and the sequence-spread HARQ indication information set by at least two parts.
- some resources are selected from at least two PRB pairs of the EPDCCH resource, and part of the resources are divided into at least one group.
- the method of dividing each group into at least two parts may refer to FIG. 4B, 4C, and 4D respectively.
- FIG. 4B is a schematic diagram of a specific implementation of S430 in Embodiment 4 of the present invention. Referring to FIG. 4B, when the PRB pair is a regular CP and some of the selected resources are REs of the symbol of the DMRS, the selected partial resources are divided into two groups, and each group is divided into four parts. Some of the resources are located in two PRB pairs, and may include 24 REs. The 24 REs are all REs in the thick line box in FIG.
- the method for grouping and dividing a part of the resources occupied by the HARQ indication information may be: placing each of the PRBs on the sixth symbol in the previous PRB and the three REs on the third to fifth subcarriers, And 3 REs located on the 7th symbol in the previous PRB and located on the 8th to 10th subcarriers are divided into the first group; each PRB is centered 3 REs located on the 6th symbol in the previous PRB and located on the 8th to 10th subcarriers, and 3 REs located on the 7th symbol in the previous PRB and located on the 3rd to 5th subcarriers Divided into the second group.
- Dividing 3 REs of a PRB pair located on the 6th symbol in the previous PRB and located on the 3rd to 5th subcarriers into the first part of the first group, and placing the 7th of the PRBs in the previous PRB 3 REs on the symbols and located on the 8th to 10th subcarriers are divided into the second group of the first group, and the other PRB is located on the 6th symbol in the previous PRB and located in the 3rd to 5th subcarriers
- the upper three REs are divided into the third group of the first group, and the three REs of the other PRB pair located on the seventh symbol in the previous PRB and located on the 8th to 10th subcarriers are divided into the first group.
- the HARQ indication information may be subjected to sequence spreading of 3 bits according to the number of REs included in each part, and the HARQ indication information after sequence spreading is first set to a part of a group.
- the sequence-spread HARQ indication information is repeatedly set on the other three parts of the RE of one group, so the power gain of the user's HARQ indication information can reach 12 times, that is, 10.8 dB.
- there are a total of six spreading sequences used in each group there are a total of six HARQ indications supported by each group.
- there are two groups so there are a total of 12 pieces of HARQ indication information supported by the two groups.
- the two PRB pairs have a total of 8 ECCEs, and the 8 ECCEs support a maximum of 8 scheduling signaling. If each scheduling signaling is used for uplink scheduling, and each scheduling signaling schedules 2 transport blocks (Transmit Block, TB for short) In this case, the total number of HARQ indications required is 16. That is to say, in this case, the maximum capacity of HARQ supported by the two PRB pairs is 16. Therefore, the HARQ indication information introduced in FIG. 4B occupies the selected partial resources and groups and divides the selected partial resources, so that the supported HARQ capacity of the two PRB pairs is 12, which is 12/16 of the supported maximum capacity. .
- each ECCE includes the same number of REs and all 33. It should be noted here that FIG. 4B only selects some resources in the previous PRB of the two PRB pairs.
- the RE is described as an example.
- the RE in the latter PRB of the two PRB pairs may be selected as the selected partial resources, and the method of grouping and dividing the selected partial resources is similar to the method described in FIG. 4B. I will not repeat them here.
- FIG. 4C is a schematic diagram of another specific implementation of S430 in Embodiment 4 of the present invention.
- the PRB pair is a regular CP and some of the selected resources are REs of the symbol of the DMRS
- the selected partial resources are divided into three groups, and each group is divided into four parts.
- Some of the resources are located in two PRB pairs, and may include 24 REs.
- the 24 REs are all REs in the thick line box in FIG. 4C, and 24 REs are divided into three groups, and each group includes 8 REs.
- the 8 REs included in each group are divided into four parts, each part containing 2 REs.
- the method for grouping and dividing a part of the resources occupied by the HARQ indication information may be: placing each of the PRB pairs on the sixth and seventh symbols in the previous PRB and on the third and fourth subcarriers.
- RE is divided into the first group; 4 REs on each of the PRB pairs and located on the 6th, 7th symbols in the previous PRB and located on the 5th, 8th subcarriers are divided into the second group; The 4 REs of the PRB pair located on the 6th and 7th symbols in the previous PRB and located on the 9th and 10th subcarriers are divided into the third group.
- the four REs of one PRB pair located on the sixth and seventh symbols in the previous PRB and located on the third and fourth subcarriers are respectively divided into two parts of the first group according to the difference of the subcarriers, and the other PRB is used.
- the four REs located on the 6th and 7th symbols in the previous PRB and located on the 3rd and 4th subcarriers are respectively divided into the other two parts of the first group according to the corresponding subcarriers;
- the 4 REs on the 6th and 7th symbols in the previous PRB and on the 5th and 8th subcarriers are respectively divided into two parts of the second group according to the corresponding subcarriers, and the other PRB is located in the previous PRB.
- the 4 REs on the 6th and 7th symbols and on the 5th and 8th subcarriers are respectively divided into the other two parts of the second group according to the corresponding subcarriers; the first PRB in the previous PRB 6.
- the 4 REs on the 7th symbol and located on the 9th and 10th subcarriers are respectively divided into two parts of the third group according to the corresponding subcarriers, and the other PRB is located in the sixth and seventh of the previous PRB.
- 4 REs on the symbol and located on the 9th and 10th subcarriers according to the corresponding The subcarriers are divided into the other two parts of the third group.
- each part includes 2 REs
- the HARQ indication information can be subjected to sequence spreading of 2 bits according to the number of REs included in each part, and the HARQ indication information after sequence spreading is first set to a part of a group.
- the sequence-spread HARQ indication information is repeatedly set on the other three parts of the RE of one group, so the power gain of the user's HARQ indication information can be 8 times, that is, 9 dB.
- There are a total of four spreading sequences used in each group so there are four HARQ indications supported per packet.
- there are three groups in total so there are a total of 12 HARQ indication information supported by the three groups.
- each ECCE includes the same number of REs and all 33.
- FIG. 4C only uses the selected partial resource as the RE in the previous PRB of the two PRB pairs as an example. Of course, the latter PRB in the two PRB pairs may also be selected.
- the RE is a selected part of the resource, and the method of grouping and dividing the selected part of the resources is similar to the method described in FIG. 4C, and details are not described herein again.
- FIG. 4D is a schematic diagram of still another specific implementation of S430 in Embodiment 4 of the present invention.
- the selected partial resources are divided into two groups, and each group is divided into four parts.
- Some resources are located in two PRB pairs, and may include 32 REs, which are all REs in the thick line box in FIG. 4D, and 32 REs are divided into two groups, each group containing 16 REs.
- Each group contains 16 REs divided into four parts, each of which contains 4 REs.
- the method for grouping and dividing part of the resources occupied by the HARQ indication information may be: placing each PRB pair on the 3rd and 4th symbols in the previous PRB and located at the 1st, 2nd, 7th, and 8th subcarriers.
- the upper 8 REs are divided into the first group; the 8 REs located in the 3rd, 4th symbols in the previous PRB and located in the 5th, 6th, 11th, and 12th subcarriers of each PRB pair are divided into the second group group.
- 8 REs of a PRB pair located on the 3rd and 4th symbols in the previous PRB and located on the 1st, 2nd, 7th, and 8th subcarriers are sequentially divided into two parts of the first group according to the corresponding subcarriers
- 8 REs of another PRB pair located on the 3rd and 4th symbols in the previous PRB and located on the 1st, 2nd, 7th, and 8th subcarriers are sequentially divided into the other two groups of the first group according to the corresponding subcarriers.
- each ECCE occupies the selected partial resources and groups and divides the selected partial resources, so that the two HARBs support the HARQ capacity to 16 and reach the maximum supported capacity. And after puncturing the REs occupied by the HARQ indication information, each ECCE includes the same number of REs and 32. It should be noted that FIG. 4D only uses the selected partial resource as the RE in the previous PRB of the two PRB pairs as an example. Of course, the latter PRB in the two PRB pairs may also be selected.
- the RE is a selected partial resource, and the method of grouping and dividing the selected partial resources is similar to the method described in FIG. 4D, and details are not described herein again.
- 4E is a schematic diagram of still another specific implementation of S430 in Embodiment 4 of the present invention.
- the PRB pair is an extended CP
- some selected resources are not REs of the symbol of the DMRS
- the selected partial resources are grouped into one group, and the group is divided into four parts.
- Some of the resources are located in two PRB pairs, and may include 16 REs, which are all REs in the thick line box in FIG. 4E, and the 16 REs are divided into one group.
- the 16 REs included in the group are divided into four parts, each of which contains 4 REs.
- the method for grouping and dividing part of the resources occupied by the HARQ indication information may be: placing each PRB pair on the 2nd and 3rd symbols in the previous PRB and located at the 1st, 2nd, 7th, and 8th subcarriers. The eight REs on the top are divided into one group.
- Arranging 8 REs of a PRB pair located on the 2nd and 3rd symbols in the previous PRB and located on the 1st, 2nd, 7th, and 8th subcarriers into two parts according to the corresponding subcarriers The other two PRs in the PRB pair are located on the 2nd and 3rd symbols in the previous PRB and the 8 REs located on the 1st, 2nd, 7th, and 8th subcarriers are sequentially divided into the other two parts of the group according to the corresponding subcarriers.
- the HARQ indication information can be subjected to sequence spreading of 4 bits according to the number of REs included in each part, and the sequence-spread HARQ indication information is first set to a part of a group. On the four REs, the sequence-spread HARQ indication information is repeatedly set on the other three parts of the RE of one group, so the power gain of the user's HARQ indication information can reach 16 Double, that is, 12dB.
- there are a total of eight spreading sequences used in each group there are a total of eight HARQ indications supported by each group. In this embodiment, there is a total of one group, so there are a total of eight HARQ indication information supported by the group.
- the HARQ indication information introduced in FIG. 4E occupies the selected partial resources and performs grouping and partial division on the selected partial resources, so that the two HARB capacities supported by the two PRB pairs are eight, and the maximum supported capacity is reached. And after puncturing the REs occupied by the HARQ indication information, each ECCE contains the same number of REs and all 34. It should be noted that FIG. 4E only takes the selected partial resource as the RE in the previous PRB of the two PRB pairs as an example, and of course, the latter PRB in the two PRB pairs may also be selected. The RE is a selected part of the resource, and the method of grouping and dividing the selected part of the resources is similar to the method described in FIG. 4E, and details are not described herein again.
- FIG. 5 is a flowchart of a method for transmitting HARQ indication information according to Embodiment 5 of the present invention.
- the implementation scenario of this embodiment is: selecting RE from a PRB of a PRB pair as the selected partial resource.
- the method of this embodiment may include the following steps:
- the partial resources are divided into at least one part, and the number of REs included in each part is equal and not less than 2.
- the number of spreading sequences corresponding to the number of REs included in each part is equal to the number of times of the ECCE included in one PRB pair. Take 2.
- S540 Perform sequence spreading of the corresponding bit on the HARQ indication information according to the number of REs included in each part.
- the method for transmitting HARQ indication information provided in this embodiment, by selecting a part of resources from a PRB pair of EPDCCH resources, dividing part of the resources into at least one part, and performing corresponding bits on the HARQ indication information according to the number of REs included in each part.
- the sequence is spread, and the sequence-spread HARQ indication information is repeatedly set on each part of the RE to implement the power gain of the HARQ indication information.
- the base station transmits the sequence-spread HARQ indication information repeatedly set on each part of the RE to the UE, so that the UE can detect the HARQ indication information of the sequence-spreading set on each part of the RE by repeatedly detecting the transmission of the base station transmission.
- the method may further include: using one DMRS in one PRB pair to associate with the sequence-spread HARQ indication information.
- FIG. 5B is a schematic diagram of a specific implementation of S530 in Embodiment 5 of the present invention.
- the PRB pair is a regular CP and the selected part of the resource is the RE of the symbol of the DMRS
- the selected part of the resource is divided into three parts.
- Some of the resources are located in a PRB pair, and may contain 12 REs.
- the 12 REs are REs in all the thick line boxes in FIG. 5B, and 12 of the REs are divided into three parts, and each part includes 4 REs.
- the method for dividing a part of the resources occupied by the HARQ indication information may be: dividing the 4 REs located in the 6th and 7th symbols of the previous PRB and located on the 3rd and 4th subcarriers into one PRB pair to In the first part, 4 REs of a PRB pair located on the 6th and 7th symbols in the previous PRB and located on the 5th, 8th subcarriers are divided into the second part, and one PRB is located in the previous PRB.
- the 4 REs on the 6th and 7th symbols and located on the 9th and 10th subcarriers are divided into the third part.
- the HARQ indication information can be subjected to sequence spreading of 4 bits according to the number of REs included in each part, and the sequence-spread HARQ indication information is first set to a part of 4 REs. Then, the sequence-spread HARQ indication information is repeatedly set on the other three parts of the RE of one group, so the power gain of the user's HARQ indication information can reach 12 times, that is, 10.8 dB. At the same time, since there are 8 spreading sequences used, there are 8 HARQ indications supported. In this embodiment, for a regular CP, one PRB pair has 4 ECCEs, and the supported HARQ maximum capacity is 8. Therefore, the HARQ indication information introduced in FIG.
- each ECCE occupies the selected partial resources and divides the selected partial resources into parts, so that the supported HARQ capacity of one PRB pair is eight, and the maximum supported capacity is reached. And after puncturing the REs occupied by the HARQ indication information, each ECCE includes the same number of REs and all 33. It should be noted that FIG. 5B only takes the selected partial resource as the RE in the previous PRB of the two PRB pairs as an example, and of course, the latter PRB in the two PRB pairs may also be selected. RE is a selected part of the resource, and the method of grouping and dividing the selected part of the resources is The method described in FIG. 5B is similar and will not be described again here.
- FIG. 5C is a schematic diagram of another specific implementation of S530 in Embodiment 5 of the present invention.
- the selected partial resources are divided into three parts.
- Some of the resources are located in a PRB pair and may contain 12 REs.
- the 12 REs are all REs in the thick line box in Figure 5C, and 12 of the REs are divided into three parts, each part containing 4 REs. .
- the part of the resources occupied by the HARQ indication information may be divided into: the first part of the PRB pair located on the third symbol in the previous PRB and located on the first to fourth subcarriers is divided into the first part.
- each part includes 4 REs, the HARQ indication information can be subjected to sequence spreading of 4 bits according to the number of REs included in each part, and the sequence-rendered HARQ indication information is first set to a part of 4 REs.
- the sequence-spread HARQ indication information is repeatedly set on the other three parts of the RE of one group, so the power gain of the user's HARQ indication information can reach 12 times, that is, 10.8 dB.
- the power gain of the user's HARQ indication information can reach 12 times, that is, 10.8 dB.
- the HARQ indication information introduced in FIG. 5C occupies the selected partial resources and divides the selected partial resources into parts, so that the supported HARQ capacity of one PRB pair is eight, and the maximum supported capacity is reached.
- each ECCE contains the same number of REs and 33.
- FIG. 5C only uses the selected partial resource as the RE in the previous PRB of the two PRB pairs as an example, and of course, the latter PRB in the two PRB pairs may also be selected.
- RE is a selected part of the resource, and the method of grouping and dividing the selected part of the resources is similar to the method described in FIG. 5C, and details are not described herein again.
- FIG. 5D is a schematic diagram of still another specific implementation of S530 in Embodiment 5 of the present invention.
- the selected part of the resource is divided into three parts. If the PRB pair is an extended CP, and some of the selected resources are not REs of the symbol of the DMRS, some resources are located in one PRB pair, and may include 12 REs, and the 12 REs are all the thick line boxes in FIG. 5D. RE, will be 12 of them
- the RE is divided into six parts, each part containing 2 REs.
- the method for dividing a part of the resources occupied by the HARQ indication information may be: dividing the two REs located in the third symbol of the previous PRB and located on the first and second subcarriers into the first part. , dividing a RE of a PRB pair located on the third symbol in the previous PRB and located on the 3rd, 4th subcarriers into the second part, and placing the third of the PRB pairs in the previous PRB Two REs on the symbol and located on the 5th, 6th subcarriers are divided into the third part, and one REB is located on the 3rd symbol in the previous PRB and 2 REs on the 7th and 8th subcarriers Divided into the fourth part, the second RE of the PRB pair located on the third symbol in the previous PRB and located on the 9th, 10th subcarriers is divided into the fifth part, and one PRB is located in the previous PRB.
- the 2 REs on the 3rd symbol and located on the 11th, 12th subcarriers are divided into the sixth part. Since each part includes 2 REs, the HARQ indication information can be spread by 2 bits according to the number of REs included in each part, and the sequence-rendered HARQ indication information is first set to a part of 2 REs. Then, the sequence-spread HARQ indication information is repeatedly set on the other three parts of the RE of one group, so the power gain of the user's HARQ indication information can reach 12 times, that is, 10.8 dB. At the same time, since there are 4 spreading sequences used, there are 4 HARQ indications supported.
- the HARQ indication information introduced in FIG. 5D occupies the selected partial resources and divides the selected partial resources into parts, so that one PRB pair supports four HARQ capacities, and the maximum supported capacity is reached. And after puncturing the REs occupied by the HARQ indication information, each ECCE contains the same number of REs and all 33.
- FIG. 5D only takes the selected partial resource as the RE in the previous PRB of the two PRB pairs as an example, and of course, the latter PRB in the two PRB pairs may also be selected.
- the RE is a selected part of the resource, and the method of grouping and dividing the selected part of the resources is similar to the method described in FIG. 5D, and details are not described herein again.
- FIG. 6 is a flowchart of a method for transmitting HARQ indication information according to Embodiment 6 of the present invention. The method is performed by the UE. Referring to Figure 6, the method includes the following steps:
- the HARQ indication information transmission method provided by this embodiment is selected by using EPDCCH resources. Take some resources and extract HARQ indication information from some resources. Therefore, the UE can determine whether the uplink transmission data is correctly decoded by the base station by detecting the extracted HARQ indication information, thereby determining whether to send new data or retransmit data, and the base station does not need to resend new scheduling signaling to control the UE. The previous data is retransmitted, thus reducing the signaling load on the control channel of the system.
- FIG. 7 is a flowchart of a method for transmitting HARQ indication information according to Embodiment 7 of the present invention.
- the embodiment is further refined on the basis of the above-mentioned sixth embodiment.
- the method of this embodiment may include the following steps:
- S720 Select at least two parts from the EPDCCH resource, and each part includes an equal number of resource elements RE and not less than 2.
- At least two parts are selected from at least two physical resource block PRB pairs of EPDCCH resources, and at least two parts include REs in two PRB pairs.
- at least the method corresponding to the divided parts shown in FIGS. 4B, 4C, 4D and 4E is adopted to select at least Select at least two parts of the two PRB pairs.
- select at least two parts from a PRB pair of EPDCCH resources may refer to the method of dividing the parts shown in FIG. 5B, 5C, and 5D of the foregoing fifth embodiment, and adopt the corresponding parts shown in FIG. 5B, 5C, and 5D.
- the method selects at least two parts from a PRB pair of EPDCCH resources.
- the first specific implementation manner is: performing channel estimation according to each DMRS corresponding to each part of at least two parts, and performing soft demodulation on each part separately to obtain soft information of each part; after combining the soft information of each part, Sequence despreading is performed according to the number of REs included in each part, and HARQ indication information is obtained.
- the second specific implementation manner is: performing channel estimation according to DMRS corresponding to each part of at least two parts, and performing soft demodulation on each part separately to obtain soft information of each part; according to the number of REs included in each part, each part Sequence despreading is performed separately to obtain soft information after sequence despreading of each part; soft information of each part of the despreading sequence is combined to obtain HARQ indication information.
- the 8 REs are divided into two parts, and the two parts are respectively associated with DMRS A and DMRS B.
- the two parts are named Part A and Part B; each part contains 4 REs.
- the four REs in this part A are named RE ⁇ A, U, RE ⁇ A, 2 ⁇ , RE ⁇ A,3 ⁇ , RE ⁇ A,4 ⁇ , name the four REs in this part B as RE ⁇ B,1 ⁇ , RE ⁇ B,2 ⁇ , RE ⁇ B,3 ⁇ , RE ⁇ B , 4 ⁇ .
- 4-bit sequence spreading is performed, that is, spreading is performed using the sequence ⁇ U [+, +, +, +], and the spread sequence is placed in each of the four parts.
- ⁇ U [+, +, +, +]
- the UE receives signals of a total of 8 REs in these two parts, assuming that the received signals are y ⁇ A,l ⁇ , y ⁇ A,2 ⁇ , y ⁇ A,3 ⁇ , y ⁇ A,4 ⁇ , y ⁇ B,l ⁇ , y ⁇ B,2 ⁇ , y ⁇ B,3 ⁇ , y ⁇ B,4 ⁇ .
- the UE uses DMRS A for channel estimation, and obtains channel estimation values of 4 REs of part A, which are h ⁇ A, l ⁇ , h ⁇ A, 2 ⁇ , h ⁇ A, 3 ⁇ , h ⁇ A,4 ⁇ ;
- the UE uses DMRS B for channel estimation for 4 REs of part B, and obtains channel estimation values of 4 REs of part B, which are h ⁇ B, l ⁇ , h ⁇ B, 2 ⁇ , h ⁇ B,3 ⁇ , h ⁇ B,4 ⁇ .
- the HARQ indication information transmission method provided in this embodiment, by selecting at least two parts from the EPDCCH resources, combining soft information from at least two parts, performing sequence despreading according to the number of REs included in each part, and obtaining HARQ indication information. . Therefore, the UE can determine whether the uplink transmission data is correctly decoded by the base station by using the obtained HARQ indication information, thereby determining whether to send new data or retransmit data, and the base station does not need to resend new scheduling signaling to control the UE. The previous data is transmitted, thus reducing the signaling load of the control channel of the system.
- the method before the channel estimation is performed according to the demodulation reference information DMRS corresponding to each part of the at least two parts, the method further includes: extracting each part of the corresponding DMRS from the PRB pair to which each part belongs.
- FIG. 8 is a schematic diagram of a HARQ indication information transmission apparatus according to Embodiment 8 of the present invention. As shown in Figure 8, it includes:
- An EPDCCH resource allocation module 810 configured to allocate an EPDCCH resource to the UE
- the partial resource selection module 820 is configured to select a part of the resources from the EPDCCH resource, and the indication information sending module 830 is configured to send the HARQ indication information to the UE by using the part of the resource.
- the partial resource selection module 820 is specifically configured to select a part of resources from the physical resource block PRB pair of the EPDCCH resource.
- the indication information sending module 830 includes:
- a first part dividing unit configured to divide the part of the resources into at least two parts, and the number of resource elements RE included in each part is equal and not less than 2;
- a first sequence spread spectrum unit configured to: according to the number of REs included in each part
- the HARQ indication information performs sequence spreading of the corresponding bit
- a first information repetition setting unit configured to repeatedly set the sequence-rendered HARQ indication information on each part of the RE
- a first part of the resource transmission unit configured to transmit the part of the resource to the UE.
- a part of the resource selection module 820 is configured to select a part of resources from the PRB pair of the EPDCCH resource, so that the number of REs included in each enhanced control channel element ECCE of the PRB pair after punching is equal;
- the indication information sending module is specifically configured to:
- the first part dividing unit is specifically configured to divide the part of resources into at least two parts according to a required HARQ channel capacity, and the number of spreading sequences corresponding to the number of REs included in each part satisfies Describe the required HARQ channel capacity.
- the partial resource selection module 820 is specifically configured to select a part of the resources from the at least two physical resource block PRB pairs of the EPDCCH resource.
- the indication information sending module 830 includes:
- a second part dividing unit configured to divide the partial resources into at least one group, each group includes REs in the two PRB pairs, and each group is divided into at least two parts, and the number of REs included in each part
- the product of the number of corresponding spreading sequences and the number of groups is equal to the number of ECCEs included in the at least two PRB pairs multiplied by 2;
- a second sequence spreading unit configured to perform sequence spreading of the corresponding bit on the HARQ indication information according to the number of REs included in each part
- a second information repetition setting unit configured to repeatedly set the sequence-rendered HARQ indication information on the RE of each part in a group
- a second part of the resource transmission unit configured to transmit the part of the resource to the UE.
- a first indication information association module configured to: before the second part resource transmission unit transmits the part of the resource to the UE, use a DMRS signal in the PRB pair of the part in the part of the one group The sequence-spread HARQ indication information set in the part is associated.
- each PRB pair includes at least two parts of the one group; the first indication information association module is specifically configured to use the PRB alignment for at least two parts of the one group of one PRB pair
- the at least two DMRSs are respectively associated with the at least two-part sequence-spread HARQ indication information.
- the at least two PRB pairs are located in one EPDCCH PRB set configured for the UE, or in a different EPDCCH PRB set configured for the UE.
- the part resource selection module 820 is specifically configured to select a part of resources from a PRB pair of the EPDCCH resource.
- the indication information sending module 830 includes:
- a third part dividing unit configured to divide the part of resources into at least one part, each part includes an equal number of REs and not less than 2, and the number of spreading sequences corresponding to the number of REs included in each part is equal to the number Multiply the number of ECCEs included in a PRB pair by 2;
- a third sequence spreading unit configured to perform sequence spreading of the corresponding bit on the HARQ indication information according to the number of REs included in each part;
- a third information repetition setting unit configured to repeatedly set the HARQ indication information after the sequence is spread On each part of the RE;
- a third part of the resource transmission unit configured to transmit the part of the resource to the UE.
- a second indication information association module configured to use one of the one PTRS and the sequence-spread HARQ indication information before the third part resource transmission unit transmits the part of the resource to the UE Make an association.
- the HARQ indication information transmission apparatus sends the HARQ indication information to the UE by selecting some resources from the EPDCCH resources. Therefore, the base station can transmit the HARQ indication information to the UE by using the partial resource selected from the EPDCCH resource, and the UE can determine whether the uplink transmission data is correctly decoded by the base station by detecting the HARQ indication information transmitted by the base station, thereby determining whether to send new data or Before retransmitting the previous data, the base station is not required to resend the new scheduling signaling to control the data before the UE retransmission, thus reducing the signaling load of the control channel of the system.
- FIG. 9 is a schematic diagram of a HARQ indication information transmission apparatus according to Embodiment 9 of the present invention. As shown in Figure 9, it includes:
- An EPDCCH resource receiving module 910 configured to receive an EPDCCH resource
- the partial resource selection module 920 is configured to select a part of the resources from the EPDCCH resource, and the indication information extraction module 930 is configured to extract HARQ indication information from the partial resources. Further, the partial resource selection module 920 is specifically configured to select at least two parts from the EPDCCH resources, and the number of resource elements RE included in each part is equal and not less than 2;
- the indication information extraction module 930 is specifically configured to perform channel estimation according to the demodulation reference signal DMRS corresponding to each part of the at least two parts, and perform soft demodulation on each part separately to obtain soft information of each part; After the soft information of each part is combined, the sequence despreading is performed according to the number of REs included in each part to obtain the HARQ indication information; or
- a DMRS extraction module configured to: before the indication information extraction module separately performs channel estimation according to the demodulation reference signal DMRS corresponding to each part of the at least two parts, The PRB pair extracts the corresponding DMRS for each part.
- the partial resource selection module 920 is specifically configured to select the at least two parts from the at least two physical resource block PRB pairs of the EPDCCH resource, where the at least two parts include the REs in the two PRB pairs. .
- the partial resource selection module 920 is specifically configured to:
- the HARQ indication information transmission apparatus extracts HARQ indication information from a part of resources by selecting a part of resources from the EPDCCH resources. Therefore, the UE can determine whether the uplink transmission data is correctly decoded by the base station by detecting the extracted HARQ indication information, thereby determining whether to send new data or retransmit data, and the base station does not need to resend new scheduling signaling to control the UE. The previous data is retransmitted, thus reducing the signaling load on the control channel of the system.
- FIG. 10 is a schematic structural diagram of a base station 1000 according to Embodiment 10 of the present invention. As shown in FIG. 10, the base station 1000 includes:
- the processor 1010 is configured to allocate an EPDCCH resource to the UE, and select a part of the resource from the EPDCCH resource.
- the transmitter 1020 is configured to send the HARQ indication information to the UE by using the partial resource. Further, the processor 1010 is specifically configured to: allocate an EPDCCH resource for the UE; and select a part of the resource from the PRB pair of the EPDCCH resource.
- the transmitter 1020 is specifically used to:
- the HARQ indication information after the sequence spread spectrum is repeatedly set on each part of the RE;
- the partial resources are transmitted to the UE.
- selecting a part of the resources from the EPDCCH resource includes:
- the transmitter 1020 is specifically configured to: perform puncturing on the part of the resources, and send the HARQ indication information to the UE by using the punctured part of resources. Further, the dividing the part of the resources into at least two parts comprises: dividing the part of resources into at least two parts according to a required HARQ channel capacity, and a spreading sequence corresponding to the number of REs included in each part The number of HARQ channel capacity required is satisfied.
- the selecting a part of the resources from the EPDCCH resource includes:
- the product of the number of groups is equal to the number of the ECCEs included in the at least two PRB pairs multiplied by 2; the HARQ indication information that is spread by the sequence is repeatedly set on each part of the RE, including: after the sequence is spread
- the HARQ indication information is repeatedly set on the RE of each part in a group.
- the transmitter 1020 is further configured to: before transmitting the part of the resource to the UE, use, for a part of the one group, a DMRS signal in the PRB pair in the part and a part set in the part
- the sequence-spread HARQ indication information is associated.
- each PRB pair includes at least two parts of the one group; the DMRS signal in the PRB pair in which the part is located is associated with the sequence-spread HARQ indication information set in the part, Includes:
- the sequence-spread HARQ indication information set by the at least two DMRSs of the PRB pair and the at least two parts is separately associated.
- the at least two PRB pairs are located in one EPDCCH PRB set configured for the UE, or in a different EPDCCH PRB set configured for the UE.
- the selecting a part of the resources from the EPDCCH resource includes:
- Part of the resource is selected from a PRB pair of the EPDCCH resource.
- the transmitter 1020 is specifically used to:
- the partial resources are divided into at least one part, and the number of REs included in each part is equal and not less than 2, and the number of spreading sequences corresponding to the number of REs included in each part is equal to the number of ECCEs included in the one PRB pair. Multiply the number by 2;
- sequence spreading of the corresponding bit on the HARQ indication information according to the number of REs included in each part;
- the sequence-spread HARQ indication information is repeatedly set on the RE of each part; and the partial resources are transmitted to the UE.
- the transmitter 1020 is further configured to use the DMRS of the one PRB pair to associate with the sequence-spread HARQ indication information before transmitting the partial resource to the UE.
- the base station provided in this embodiment extracts HARQ indication information from some resources by selecting some resources from the EPDCCH resources. Therefore, the UE can determine whether the uplink transmission data is correctly decoded by the base station by detecting the extracted HARQ indication information, thereby determining whether to send new data or retransmit data, and the base station does not need to resend new scheduling signaling to control the UE. The previous data is retransmitted, thus reducing the signaling load on the control channel of the system.
- FIG. 11 is a schematic structural diagram of a UE1100 according to Embodiment 11 of the present invention. As shown in FIG. 11, UE1100 includes:
- the receiver 1110 is configured to receive an EPDCCH resource.
- the processor 1120 is configured to select a part of resources from the EPDCCH resources, and extract HARQ indication information from the part resources.
- selecting the partial resources from the EPDCCH resources includes:
- the extracting the HARQ indication information from the part of the resources includes:
- the processor 1120 is further configured to: extract, according to each part of the PRB pair, a corresponding DMRS, before performing channel estimation according to the demodulation reference signal DMRS corresponding to each part of the at least two parts.
- the selecting at least two parts from the EPDCCH resource includes:
- the selecting at least two parts from the EPDCCH resource includes:
- the at least two parts are selected from a PRB pair of the EPDCCH resource.
- the UE provided in this embodiment extracts HARQ indication information from some resources by selecting some resources from the EPDCCH resources. Therefore, the UE can determine whether the uplink transmission data is correctly decoded by the base station by detecting the extracted HARQ indication information, thereby determining whether to send new data or retransmit data, and the base station does not need to resend new scheduling signaling to control the UE. The previous data is retransmitted, thus reducing the signaling load on the control channel of the system.
- the aforementioned program can be stored in a computer readable storage medium.
- the program when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
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Abstract
Description
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Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/075997 WO2014186952A1 (zh) | 2013-05-21 | 2013-05-21 | 混合自动重传请求指示信息传输方法和装置 |
| EP13869861.8A EP2830252A4 (en) | 2013-05-21 | 2013-05-21 | METHOD AND DEVICE FOR TRANSMITTING A HYBRID AUTOMATIC REPEAT REQUEST OF DISPLAY INFORMATION |
| CN201380000918.XA CN104365050B (zh) | 2013-05-21 | 2013-05-21 | 混合自动重传请求指示信息传输方法和装置 |
| KR1020157004117A KR101727086B1 (ko) | 2013-05-21 | 2013-05-21 | 하이브리드 자동 재전송 요청 지시자 정보를 송신하는 방법 및 장치 |
| JP2015545636A JP6122506B2 (ja) | 2013-05-21 | 2013-05-21 | ハイブリッド自動再送要求(harq)インジケータ情報を送信する方法及び装置 |
| US14/327,149 US9432166B2 (en) | 2013-05-21 | 2014-07-09 | Method and apparatus for transmitting hybrid automatic repeat request indicator information |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/075997 WO2014186952A1 (zh) | 2013-05-21 | 2013-05-21 | 混合自动重传请求指示信息传输方法和装置 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US14/327,149 Continuation US9432166B2 (en) | 2013-05-21 | 2014-07-09 | Method and apparatus for transmitting hybrid automatic repeat request indicator information |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014186952A1 true WO2014186952A1 (zh) | 2014-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| PCT/CN2013/075997 Ceased WO2014186952A1 (zh) | 2013-05-21 | 2013-05-21 | 混合自动重传请求指示信息传输方法和装置 |
Country Status (6)
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| US (1) | US9432166B2 (zh) |
| EP (1) | EP2830252A4 (zh) |
| JP (1) | JP6122506B2 (zh) |
| KR (1) | KR101727086B1 (zh) |
| CN (1) | CN104365050B (zh) |
| WO (1) | WO2014186952A1 (zh) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10772083B2 (en) | 2014-12-31 | 2020-09-08 | Lg Electronics Inc. | Method and apparatus for allocating resource in wireless communication system |
| CN106301731B (zh) * | 2015-06-12 | 2019-09-24 | 联想(北京)有限公司 | 信息处理方法、基站及终端 |
| WO2018172552A1 (en) | 2017-03-24 | 2018-09-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Detection of inconsistent data in a data transmission |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056228A (zh) * | 2009-11-02 | 2011-05-11 | 夏普株式会社 | 上行混合自动请求重传应答信息捆绑指示传输方法和基站 |
| CN102377548A (zh) * | 2010-08-16 | 2012-03-14 | 夏普株式会社 | 下行harq反馈方法以及相应的基站和用户设备 |
| CN102595620A (zh) * | 2011-01-04 | 2012-07-18 | 中国移动通信集团公司 | 一种中继接入链路的半持续调度方法、系统及装置 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5685307B2 (ja) * | 2010-03-29 | 2015-03-18 | エルジー エレクトロニクス インコーポレイティド | アップリンク多重アンテナ伝送を支援するための効率的な制御情報伝送方法及び装置 |
| WO2012102510A2 (ko) * | 2011-01-26 | 2012-08-02 | 엘지전자 주식회사 | 무선 통신 시스템에서 하향링크 제어 정보를 송수신하는 방법 및 이를 위한 장치 |
| CN102882663A (zh) * | 2011-07-14 | 2013-01-16 | 夏普株式会社 | 下行物理harq指示的发送和接收方法、用户设备及基站 |
| US9258086B2 (en) * | 2011-08-03 | 2016-02-09 | Qualcomm Incorporated | Allocating physical hybrid ARQ indicator channel (PHICH) resources |
| US20130083746A1 (en) * | 2011-09-30 | 2013-04-04 | Interdigital Patent Holdings, Inc. | Method and apparatus for allocating resources for an enhanced physical hybrid automatic repeat request indicator channel |
| KR102207480B1 (ko) * | 2011-11-16 | 2021-01-26 | 삼성전자 주식회사 | 무선 통신 시스템에서 제어 정보 전송을 위한 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 |
| US9161342B2 (en) * | 2012-09-28 | 2015-10-13 | Alcatel Lucent | Methods and apparatuses for allocating wireless resources in wireless network |
-
2013
- 2013-05-21 EP EP13869861.8A patent/EP2830252A4/en not_active Withdrawn
- 2013-05-21 KR KR1020157004117A patent/KR101727086B1/ko not_active Expired - Fee Related
- 2013-05-21 JP JP2015545636A patent/JP6122506B2/ja not_active Expired - Fee Related
- 2013-05-21 CN CN201380000918.XA patent/CN104365050B/zh not_active Expired - Fee Related
- 2013-05-21 WO PCT/CN2013/075997 patent/WO2014186952A1/zh not_active Ceased
-
2014
- 2014-07-09 US US14/327,149 patent/US9432166B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056228A (zh) * | 2009-11-02 | 2011-05-11 | 夏普株式会社 | 上行混合自动请求重传应答信息捆绑指示传输方法和基站 |
| CN102377548A (zh) * | 2010-08-16 | 2012-03-14 | 夏普株式会社 | 下行harq反馈方法以及相应的基站和用户设备 |
| CN102595620A (zh) * | 2011-01-04 | 2012-07-18 | 中国移动通信集团公司 | 一种中继接入链路的半持续调度方法、系统及装置 |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20140348085A1 (en) | 2014-11-27 |
| KR20150032901A (ko) | 2015-03-30 |
| JP6122506B2 (ja) | 2017-04-26 |
| US9432166B2 (en) | 2016-08-30 |
| CN104365050B (zh) | 2018-02-06 |
| CN104365050A (zh) | 2015-02-18 |
| EP2830252A1 (en) | 2015-01-28 |
| JP2016506127A (ja) | 2016-02-25 |
| EP2830252A4 (en) | 2015-08-19 |
| KR101727086B1 (ko) | 2017-04-14 |
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