WO2014063592A1 - Data transmission method and device - Google Patents
Data transmission method and device Download PDFInfo
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- WO2014063592A1 WO2014063592A1 PCT/CN2013/085433 CN2013085433W WO2014063592A1 WO 2014063592 A1 WO2014063592 A1 WO 2014063592A1 CN 2013085433 W CN2013085433 W CN 2013085433W WO 2014063592 A1 WO2014063592 A1 WO 2014063592A1
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- pdsch
- dmrs signal
- dmrs
- data
- base station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present application claims priority to Chinese Patent Application, filed on Jan. 23, 2012, filed on Jan. 23,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, .
- the present invention relates to the field of communication systems, and in particular, to a data transmission method and apparatus.
- LTE Long Term Evolution, 3GPP Long Term Evolution
- the transmission of downlink data packets is always accompanied by two channels, one is a channel PDSCH that transmits PDSCH (Physical Downlink Shared Channel) data, and the other is One is a channel PDCCH (Physical Downlink Control Channel) / EPDCCH (Enhanced Physical Downlink Control Channel) indicating the PDSCH parameter, and the PDSCH parameter generally includes the resources occupied by the PDSCH.
- MCS Modulation and Coding Scheme
- the transmitting end B (Node B, base station)
- the communication path between the user terminal device and the user terminal device is very large.
- the PDCCH/EPDCCH channel and the PDSCH channel need to be enhanced, so that the user terminal device can correctly receive the channel transmission.
- information At present, the information of these channels is usually repeated multiple times.
- the user terminal equipment needs to perform blind detection on the PDCCH/EPDCCH channel, and the blind detection of a single PDCCH/EPDCCH channel is complicated, if it is to be The PDCCH/EPDCCH channels are combined, which results in more times for the user terminal equipment to perform blind detection on the PDCCH/EPDCCH channel, which results in a large amount of computation and power consumption of the user terminal equipment.
- a data transmission method and apparatus provided by an embodiment of the present invention avoids blind detection of a PDCCH/EPDCCH channel during data transmission, thereby reducing computational complexity and power consumption of a user terminal device.
- the technical solution adopted by the embodiment of the present invention is: A method of transmitting data, including:
- the eNB selects a DMRS signal from the DMRS signal set, and each DMRS signal in the DMRS signal set respectively corresponds to a set of physical downlink shared channel PDSCH parameters, where the PDSCH parameter is used to indicate information of the PDSCH data;
- the base station sends the DMRS signal and the PDSCH data to the user equipment, so that the user equipment determines the PDSCH parameter corresponding to the DMRS signal to detect the PDSCH data, and outputs the detected data. .
- the method further includes: after the base station establishes a correspondence table between each DMRS signal and the PDSCH parameter in the DMRS signal set, sending, by the base station, the correspondence table to the user a terminal device, where the correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters;
- the selecting, by the base station, the DMRS signal from the demodulation reference signal DMRS signal set includes:
- the base station selects, according to the PDSCH parameter of the PDSCH data and the correspondence table, a DMRS signal corresponding to the PDSCH parameter from the DMRS signal set.
- the base station selecting, by the base station, the DMRS signal corresponding to the PDSCH parameter from the DMRS signal set according to the PDSCH parameter of the PDSCH data and the correspondence table, including:
- the base station selects a DMRS signal from the DMRS signal set according to the length of the PDSCH data and the number of physical resource blocks to the PRB pair required to transmit the PDSCH data, and the correspondence table.
- the selecting, by the base station, the DMRS signal from the demodulation reference signal DMRS signal set includes:
- the correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
- the method further includes: the base station scrambling the DMRS signal by using an identifier of the user equipment;
- the sending, by the base station, the DMRS signal to the user terminal device includes:
- a data transmission device includes:
- a selecting unit configured to select a DMRS signal from the demodulation reference signal DMRS signal set, the DMRS signal
- Each DMRS signal in the set of numbers corresponds to a set of physical downlink shared channel PDSCH parameters, where the PDSCH parameters are used to indicate information of PDSCH data;
- a sending unit configured to send, to the user equipment, the DMRS signal selected by the selecting unit and the PDSCH data, so that the PDSCH parameter corresponding to the DMRS signal is selected by the user equipment to detect the PDSCH data , outputting the detected data.
- the device also includes:
- a establishing unit configured to: before the selecting unit selects the DMRS signal from the DMRS signal set, establish a correspondence table of each DMRS signal and the PDSCH parameter in the DMRS signal set, and send the correspondence table to the user terminal device, where The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters;
- the selecting unit is specifically configured to select, according to the PDSCH parameter of the PDSCH data and the correspondence table, a DMRS signal corresponding to the PDSCH parameter from the DMRS signal set.
- the selecting unit is further configured to: select, according to the length of the PDSCH data, the number of physical resource block pairs of PRB pairs required to send the PDSCH data, and the correspondence table, select a DMRS from the DMRS signal set. signal.
- the selecting unit is further configured to: select, according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol, a DMRS corresponding to the PDSCH parameter of the PDSCH data from the DMRS signal set.
- the correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
- the device also includes:
- a scrambling unit configured to scramble the DMRS signal selected by the selecting unit by using an identifier of the user terminal device, where the sending unit is further configured to send, after being scrambled by the scrambling unit, the user equipment corresponding to the identifier DMRS signal.
- Another method of data transmission includes:
- the user terminal device receives the demodulation reference signal DMRS signal and the physical downlink shared channel PDSCH data sent by the base station;
- the user terminal device selects a PDSCH parameter corresponding to the DMRS signal, where the PDSCH parameter is used to indicate information of the PDSCH data;
- the selecting, by the user equipment, the PDSCH parameters corresponding to the DMRS signal includes:
- the user terminal device selects a PDSCH parameter corresponding to the DMRS signal according to a correspondence table between each DMRS signal and a PDSCH parameter in the DMRS signal set configured by the base station, where the correspondence table is used to indicate the DMRS signals. Correspondence with different PDSCH parameters respectively; or
- the user terminal device selects a PDSCH parameter corresponding to the DMRS signal according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol, where the correspondence table is used to indicate the each Correspondence between DMRS signals and different PDSCH parameters.
- the user terminal device receiving the demodulation reference signal DMRS signal sent by the base station includes:
- the user terminal device receives the scrambled DMRS signal sent by the base station, where the DMRS signal is scrambled by the base station by using the identifier of the user terminal device;
- the user terminal device After receiving the demodulation reference signal DMRS signal and the physical downlink shared channel PDSCH data sent by the base station, the user terminal device further includes:
- the user terminal device descrambles the scrambled DMRS signal.
- Another data transmission device includes:
- a receiving unit configured to receive a demodulation reference signal DMRS signal and a physical downlink shared channel PDSCH data sent by the base station;
- a selecting unit configured to select a PDSCH parameter corresponding to the DMRS signal received by the receiving unit, where the PDSCH parameter is used to indicate information of the PDSCH data;
- a detecting unit configured to output the detected data after detecting the PDSCH data according to the PDSCH parameter selected by the selecting unit.
- the selecting unit is configured to: select, according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set configured by the base station, a PDSCH parameter corresponding to the DMRS signal, where the correspondence table is used to indicate the Corresponding relationship between each DMRS signal and different PDSCH parameters; or
- the selecting unit is specifically configured to: select a PDSCH parameter corresponding to the DMRS signal according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in a network protocol, where the correspondence table is used to indicate Corresponding relationship between the respective DMRS signals and different PDSCH parameters.
- the receiving unit is further configured to receive the scrambled DMRS signal sent by the base station, where the DMRS signal is scrambled by the base station by using an identifier of the user terminal device;
- the device also includes: And a descrambling unit, configured to descramble the scrambled DMRS signal received by the receiving unit.
- the base station selects a DMRS signal from the demodulation reference signal DMRS signal set, and then the base station sends the DMRS signal and the PDSCH data to the user terminal equipment, so as to be associated with the identifier.
- the corresponding user terminal device selects the PDSCH parameter corresponding to the DMRS signal and detects the PDSCH data, the detected data is output.
- the communication is usually performed by the PDCCH/EPDCCH channel and the PDSCH channel.
- the user terminal device needs to perform blind detection on the PDCCH/EPDCCH channel, and the blind detection of the single PDCCH/EPDCCH channel is complicated, if Combining multiple PDCCH/EPDCCH channels, the number of times that the user terminal equipment needs to perform blind detection on the PDCCH/EPDCCH channel is more, and the calculation amount and power consumption of the user terminal equipment are large.
- the embodiment of the present invention can prevent the user terminal device from blindly detecting the PDCCH PDCCH channel by using the DMRS signal in the PDSCH channel as the bearer of the PDSCH parameter of the PDSCH data, thereby reducing the calculation amount and power consumption of the user terminal device, and The PDCCH/EPDCCH channel is no longer needed during data transmission, thus reducing the overhead of the system.
- the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are merely Some embodiments of the present invention may also be used to obtain other drawings based on these drawings without departing from the prior art.
- FIG. 1 is a flowchart of a method for transmitting data according to an embodiment of the present invention
- FIG. 2 is a schematic diagram of a data transmission structure according to an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
- FIG. 5 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present disclosure.
- FIG. 6 is a schematic structural diagram of a user terminal device according to an embodiment of the present disclosure.
- FIG. 7 is a schematic diagram of mapping when the number of physical resource block pairs is 4 according to an embodiment of the present disclosure.
- FIG. 8 is a schematic diagram of a DMRS signal and a PDSCH parameter corresponding relationship according to an embodiment of the present invention
- FIG. 9 is a schematic diagram of another DMRS signal and a PDSCH parameter corresponding relationship according to an embodiment of the present invention.
- This embodiment provides a data transmission method. As shown in FIG. 1, the method includes:
- the base station selects a DMRS signal from the demodulation reference signal DMRS signal set.
- Each DMRS signal in the DMRS signal set corresponds to a set of physical downlink shared channel PDSCH parameters, and the PDSCH parameter is used to indicate information of PDSCH data.
- Each DMRS signal in the DMRS signal set may be represented in the form of a sequence, that is, one DMRS signal corresponds to one sequence, and preferably, the sequences have good cross-correlation characteristics to ensure high communication quality.
- the step 101 may further include: after the base station establishes a correspondence table between the DMRS signals and the PDSCH parameters in the DMRS signal set, and sends the correspondence table to the user terminal device, where the correspondence table is used to indicate the DMRSs. Correspondence between signals and different PDSCH parameters.
- the base station selects a DMRS signal corresponding to the PDSCH parameter from the DMRS signal set according to the PDSCH parameter of the PDSCH data and the correspondence table. For example, the base station may select a DMRS signal from the DMRS signal set according to the length of the PDSCH data and the number of physical resource block pairs PRB pair required to transmit the PDSCH data, and the correspondence table.
- the base station according to each DMRS signal in the DMRS signal set defined in the network protocol
- the DMRS signal corresponding to the PDSCH parameter of the PDSCH data is selected from the DMRS signal set, where the correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters relationship.
- the specific information of the PDSCH parameter in the corresponding table can be flexibly set.
- the PDSCH parameter can be specifically set to the length of the PDSCH data and the number of the physical resource block pair PRB pair required to transmit the PDSCH data, and the PRB pair mapping
- the schematic diagram can be as shown in FIG. 7.
- the number of PRB pairs in the PDSCH parameter in FIG. 7 is set to four;
- the correspondence table between the DMRS signal and the PDSCH parameter can be as shown in FIG. 8, that is, if the currently transmitted PDSCH data length is 20 Bits, and when six physical resource block pairs are required to transmit data, the base station selects and transmits a DMRS signal sequence corresponding to (20, 6) in the correspondence table.
- the user terminal device After receiving the DMRS signal sequence, the user terminal device obtains the PDSCH parameter corresponding to the DMRS signal sequence from the correspondence table (20, 6), and detects the PDSCH data. After that, the detected data is output, so that the problem of blind detection can be effectively avoided.
- the PDSCH parameter may be specifically set to the length of the PDSCH data and the coded version number, where the coded version number may be considered to be rate matched after the PDSCH data is encoded (the rate matching is repeated or punctured for each bit after encoding).
- the index of the number of times for example, the code version number 1 is repeated 3 times for the first N bits of the encoded data, and the remaining bits are repeated 2 times; the code version number 2 is repeated 3 times for the last N bits of the encoded data. The remaining bits are repeated twice.
- the correspondence table between the DMRS signal and the PDSCH parameter may be as shown in FIG.
- the base station selects and transmits the correspondence table and ( 40, 2) Corresponding DMRS signal sequence.
- the user terminal device After receiving the DMRS signal sequence, the user terminal device obtains the PDSCH parameter corresponding to the DMRS signal sequence from the correspondence table (40, 2), and then detects the PDSCH data, and outputs the detected data, thereby effectively avoiding blind detection. The problem.
- the base station scrambles the DMRS signal by using an identifier of the user equipment.
- the base station may scramble the DMRS signal by using an RNTI (Radio Network Temporary Identifier).
- RNTI Radio Network Temporary Identifier
- the base station sends the scrambled DMRS signal and the PDSCH data to a user equipment device corresponding to the identifier.
- the detected data is output.
- the data transmission method provided in this embodiment uses the DMRS signal in the PDSCH channel as the bearer of the PDSCH parameter of the PDSCH data to avoid blind detection of the PDCCH/EPDCCH channel, thereby reducing the calculation amount and power consumption of the user terminal device. And in the data transmission process, since the PDCCH ⁇ PDCCH channel is no longer needed, the Overhead of the system is also reduced.
- the embodiment provides a data transmission device.
- the device may include: a selection unit 21 and a sending unit 22.
- the selecting unit 21 can be configured to select a DMRS signal from the set of demodulation reference signal DMRS signals.
- the DMRS signals in the DMRS signal set respectively correspond to a group of physical downlink shared channels.
- the PDSCH parameter is used to indicate information of PDSCH data.
- the sending unit 22 may be configured to send the DMRS signal and the PDSCH data selected by the selecting unit 21 to the user terminal device, so that the user terminal device selects the PDSCH parameter corresponding to the DMRS signal and detects the PDSCH data. , outputting the detected data.
- the device may further include:
- the establishing unit 23 is configured to: before the selecting unit 21 selects the DMRS signal from the DMRS signal set, establish a correspondence table between each DMRS signal and the PD SCH parameter in the DMRS signal set, and send the correspondence table to the user terminal device.
- the correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
- the selecting unit 21 is specifically configured to select, according to the PDSCH parameter of the PDSCH data and the correspondence table, a DMRS signal corresponding to the PDSCH parameter from the DMRS signal set.
- the selecting unit 21 may be further configured to: select, according to the length of the PDSCH data, the number of physical resource block pairs of PRB pairs required to send the PDSCH data, and the correspondence table, select a DMRS from the DMRS signal set. signal.
- the selecting unit 21 may be further configured to: select, according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol, a PDSCH parameter corresponding to the PDSCH data from the DMRS signal set. DMRS signal.
- the correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
- the device may further include:
- the scrambling unit 24 can be configured to scramble the DMRS signal selected by the selecting unit by the identifier of the user terminal device.
- the sending unit 22 may be further configured to send, by the user equipment corresponding to the identifier, a DMRS signal scrambled by the scrambling unit 24.
- the entity of the data transmission device provided in this embodiment may be a base station.
- the base station may include: a processor 31 and a transmitter 32.
- the processor 31 can be configured to select a DMRS signal from the set of demodulation reference signal DMRS signals.
- Each DMRS signal in the DMRS signal set corresponds to a set of physical downlink shared channel PDSCH parameters, and the PDSCH parameter is used to indicate information of PDSCH data.
- the transmitter 32 may be configured to send, to the user equipment, the DMRS signal selected by the processor 31 and the PDSCH data, so that the user equipment, after selecting the PDSCH parameter corresponding to the DMRS signal, detects the PDSCH data. , outputting the detected data.
- the processor 31 is further configured to establish a correspondence table between each DMRS signal and the PDSCH parameter in the DMRS signal set, and send the correspondence table to the user terminal device.
- the correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
- the processor 31 is specifically configured to select, according to the PDSCH parameter of the PDSCH data and the correspondence table, a DMRS signal corresponding to the PDSCH parameter from the DMRS signal set.
- the processor 31 may be further configured to: select, according to the length of the PDSCH data, a number of physical resource block pairs of PRB pairs required to send the PDSCH data, and the correspondence table, select a DMRS from the DMRS signal set. signal.
- the processor 31 may be further configured to: select, according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol, a DMRS corresponding to the PDSCH parameter of the PDSCH data from the DMRS signal set. signal.
- the correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
- the processor 31 is further configured to scramble the DMRS signal by using an identifier of the user terminal device.
- the transmitter 32 may be further configured to send, by the user equipment corresponding to the identifier, a DMRS signal that is scrambled by the processor 31.
- the data transmission apparatus uses the DMRS signal in the PDSCH channel as the bearer of the PDSCH parameter of the PDSCH data to avoid blind detection of the PDCCH/EPDCCH channel, thereby reducing the calculation amount and power consumption of the user terminal equipment. And the PDCCH ⁇ PDCCH channel is no longer needed in the data transmission process, thereby reducing the overhead of the system.
- This embodiment provides another method for transmitting data. As shown in FIG. 4, the method includes:
- the user equipment receives the demodulation reference signal DMRS signal and the physical downlink shared channel PDSCH data sent by the base station.
- the user terminal device receives the scrambled DMRS signal sent by the base station, where the DMRS signal is scrambled by the base station by using the identifier of the user terminal device.
- the method may further include: the user terminal device descrambles the scrambled DMRS signal.
- the user equipment determines a PDSCH parameter corresponding to the DMRS signal.
- the PDSCH parameter is used to indicate information of the PDSCH data.
- the user terminal device selects a PDSCH parameter corresponding to the DMRS signal according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set configured by the base station, where the correspondence table is used to indicate the each DMRS. Correspondence between signals and different PDSCH parameters.
- the user terminal device selects a PDSCH parameter corresponding to the DMRS signal according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol, where the correspondence table is used to indicate Corresponding relationships between the respective DMRS signals and different PDSCH parameters are respectively described.
- the specific information of the PDSCH parameter in the corresponding table can be flexibly set.
- the PDSCH parameter can be specifically set to the length of the PDSCH data and the number of the physical resource block pair PRB pair required to transmit the PDSCH data, and the PRB pair mapping
- the schematic diagram can be as shown in FIG. 7.
- the number of PRB pairs in the PDSCH parameter in FIG. 7 is set to four; the correspondence table between the DMRS signal and the PDSCH parameter can be as shown in FIG.
- the user terminal equipment acquires the PDSCH parameters corresponding to the DMRS signal sequence from the correspondence table (20, 6), after detecting the PDSCH data, The detected data is output, so that the problem of blind detection can be effectively avoided.
- the PDSCH parameter may be specifically set to the length of the PDSCH data and the coded version number, where the coded version number may be considered to be rate matched after the PDSCH data is encoded (the rate matching is repeated or punctured for each bit after encoding).
- the index of the number of times for example, the code version number 1 is repeated 3 times for the first N bits of the encoded data, and the remaining bits are repeated 2 times; the code version number 2 is repeated 3 times for the last N bits of the encoded data. The remaining bits are repeated twice.
- the correspondence table between the DMRS signal and the PDSCH parameter may be as shown in FIG.
- the PDSCH parameters (40, 2) corresponding to the DMRS signal sequence are obtained from the correspondence table, and the detected PDSCH data is output, and the detected data is output, so that the problem of blind detection can be effectively avoided.
- the DMRS signal in the PDSCH channel is used as the bearer of the PDSCH parameter of the PDSCH data, and the user equipment can directly obtain the PDSCH parameter corresponding to the DMRS signal and output the data.
- the PDCCH/EPDCCH channel is prevented from being blindly detected, thereby reducing the computational complexity and power consumption of the user equipment, and the PDCCH/EPDCCH channel is no longer needed in the data transmission process, thereby reducing the overhead of the system.
- the embodiment provides another data transmission device.
- the device may include: a receiving unit 51, a selecting unit 52, and a detecting unit 53.
- the receiving unit 51 is configured to receive a demodulation reference signal DMRS signal and a physical downlink shared channel PDSCH data sent by the base station.
- the selecting unit 52 is configured to select a PDSCH parameter corresponding to the DMRS signal received by the receiving unit 41. Number.
- the PDSCH parameter is used to indicate information of the PDSCH data.
- the detecting unit 53 may be configured to output the detected data after detecting the PDSCH data according to the PDSCH parameter selected by the selecting unit 42.
- the selecting unit 52 is specifically configured to select a PDSCH parameter corresponding to the DMRS signal according to a correspondence table between each DMRS signal and a PDSCH parameter in the DMRS signal set configured by the base station.
- the correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
- the selecting unit 52 may be further configured to: select a PDSCH parameter corresponding to the DMRS signal according to a correspondence table between each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol.
- the correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
- the receiving unit 51 is further configured to receive the scrambled DMRS signal sent by the base station, where the DMRS signal is scrambled by the base station by using an identifier of the user terminal device.
- the device may further include:
- the descrambling unit 54 can be used to descramble the scrambled DMRS signal received by the receiving unit 41.
- the entity of the data transmission device provided in this embodiment may be a user terminal device.
- the user device may include: a receiver 61 and a processor 62.
- the receiver 61 is configured to receive a demodulation reference signal DMRS signal and a physical downlink shared channel PDSCH data sent by the base station.
- the processor 62 is configured to select a PDSCH parameter corresponding to the DMRS signal received by the receiver 61.
- the PDSCH parameter is used to indicate information of the PDSCH data.
- the processor 62 is further configured to: after detecting the PDSCH data according to the PDSCH parameter, output the detected data.
- the processor 62 is specifically configured to: according to each DMRS signal in the DMRS signal set configured by the base station
- a correspondence table of PDSCH parameters selects a PDSCH parameter corresponding to the DMRS signal.
- the correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
- the processor 62 is further configured to: select a PDSCH parameter corresponding to the DMRS signal according to a correspondence table between each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol.
- the correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
- the receiver 61 is further configured to receive the scrambled DMRS signal sent by the base station, where the DMRS signal is scrambled by the base station by using an identifier of the user equipment.
- the processor 62 is further configured to descramble the scrambled DMRS signal received by the receiver 61.
- Another data transmission apparatus by using the DMRS signal in the PDSCH channel as the bearer of the PDSCH parameter of the PDSCH data, may directly acquire the PDSCH parameter corresponding to the DMRS signal and output the data, so as to avoid the PDCCH.
- the /EPDCCH channel performs blind detection, thereby reducing the computational complexity and power consumption of the user terminal equipment, and reduces the overhead of the system since the PDCCH PDCCH channel is no longer needed in the data transmission process.
- the data transmission apparatus provided by the embodiment of the present invention may implement the foregoing method embodiments. For details of the implementation, refer to the description in the method embodiment, and details are not described herein.
- the data transmission method and apparatus provided by the embodiments of the present invention can be applied to the field of communication systems, but are not limited thereto.
- the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
- ROM read-only memory
- RAM random access memory
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Abstract
Disclosed are a data transmission method and device. The method comprises: a base station selecting a demodulation reference signal (DMRS) signal from a DMRS signal set, and then the base station scrambling the DMRS signal through an identifier of a user terminal device; finally, the base station sending the scrambled DMRS signal and physical downlink shared channel (PDSCH) data to the user terminal device corresponding to the identifier, so that the user terminal device corresponding to the identifier selects a PDSCH parameter corresponding to the DMRS signal to detect the PDSCH data, and then outputs the detected data. In the present invention, the DMRS signal in a PDSCH channel acts as the bearer of the PDSCH parameter of the PDSCH data, so as to prevent the user terminal device from performing blind detection on a PDCCH/EPDCCH channel, thereby reducing the amount of computation and power consumption of the user terminal device. The present invention is applicable to the field of communications systems.
Description
数据的传输方法及装置 Data transmission method and device
本申请要求于 2012年 10月 23日提交中国专利局、 申请号为 CN 201210407601.5、 发明名称为 "数据的传输方法及装置"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 本发明涉及通信系统领域, 特别涉及一种数据的传输方法及装置。 背景技术 在 LTE (Long Term Evolution, 3GPP的长期演进) 系统中, 下行数据包的传输总伴 随着两个信道, 一个是传输 PDSCH (Physical Downlink Shared Channel, 物理下行共享 信道)数据的信道 PDSCH, 另一个是指示 PDSCH参数的信道 PDCCH (Physical Downlink Control Channel , 物理下行控制信道) /EPDCCH (Enhanced Physical downlink control channel, 增强物理下行控制信道) , 在 PDSCH参数中一般会包含 PDSCH所占的资源, 传输时所用的 MCS (Modulation and Coding Scheme, 调制编码方式) 等。 The present application claims priority to Chinese Patent Application, filed on Jan. 23, 2012, filed on Jan. 23,,,,,,,,,,,,,,,,,,, . The present invention relates to the field of communication systems, and in particular, to a data transmission method and apparatus. In the LTE (Long Term Evolution, 3GPP Long Term Evolution) system, the transmission of downlink data packets is always accompanied by two channels, one is a channel PDSCH that transmits PDSCH (Physical Downlink Shared Channel) data, and the other is One is a channel PDCCH (Physical Downlink Control Channel) / EPDCCH (Enhanced Physical Downlink Control Channel) indicating the PDSCH parameter, and the PDSCH parameter generally includes the resources occupied by the PDSCH. MCS (Modulation and Coding Scheme) used.
在 LTE MTC (Machine Type Communication, 机器类的通信) 业务中, 由于一些用 户终端设备安装在建筑物内部的某个角落, 或者该用户终端设备被金属外壳包围, 导致 发送端 B(Node B,基站)和该用户终端设备之间的通信路径损耗很大。 In the LTE MTC (Machine Type Communication) service, because some user terminal equipment is installed in a certain corner of the building, or the user terminal equipment is surrounded by the metal casing, the transmitting end B (Node B, base station) The communication path between the user terminal device and the user terminal device is very large.
如果把传统的 LTE通信模式用于 MTC通信中, 即通过 PDCCH/EPDCCH信道和 PDSCH信道共同完成一次通信,那么 PDCCH/EPDCCH信道和 PDSCH信道都需要增强, 以便用户终端设备能够正确接收这些信道传输的信息。 目前通常是把这些信道的信息进 行多次重复, 然而由于用户终端设备对 PDCCH/EPDCCH信道是需要进行盲检测的, 并 且单个 PDCCH/EPDCCH 信道进行盲检测时复杂度已经很大, 如果要把多个 PDCCH/EPDCCH信道进行合并, 这样导致用户终端设备需要对 PDCCH/EPDCCH信道 进行盲检测的次数会更多, 造成用户终端设备的运算量和功耗都很大。 发明内容 本发明实施例提供的数据的传输方法及装置, 在数据传输过程中避免对 PDCCH/EPDCCH信道进行盲检测, 从而降低了用户终端设备的运算量和功耗。 本发明实施例采用的技术方案为:
一种数据的传输方法, 包括: If the traditional LTE communication mode is used in the MTC communication, that is, the PDCCH/EPDCCH channel and the PDSCH channel perform one communication together, the PDCCH/EPDCCH channel and the PDSCH channel need to be enhanced, so that the user terminal device can correctly receive the channel transmission. information. At present, the information of these channels is usually repeated multiple times. However, since the user terminal equipment needs to perform blind detection on the PDCCH/EPDCCH channel, and the blind detection of a single PDCCH/EPDCCH channel is complicated, if it is to be The PDCCH/EPDCCH channels are combined, which results in more times for the user terminal equipment to perform blind detection on the PDCCH/EPDCCH channel, which results in a large amount of computation and power consumption of the user terminal equipment. SUMMARY OF THE INVENTION A data transmission method and apparatus provided by an embodiment of the present invention avoids blind detection of a PDCCH/EPDCCH channel during data transmission, thereby reducing computational complexity and power consumption of a user terminal device. The technical solution adopted by the embodiment of the present invention is: A method of transmitting data, including:
基站从解调参考信号 DMRS信号集合中选择 DMRS信号, 所述 DMRS信号集合中各 个 DMRS信号分别对应一组物理下行共享信道 PDSCH参数, 所述 PDSCH参数用于指示 PDSCH数据的信息; The eNB selects a DMRS signal from the DMRS signal set, and each DMRS signal in the DMRS signal set respectively corresponds to a set of physical downlink shared channel PDSCH parameters, where the PDSCH parameter is used to indicate information of the PDSCH data;
所述基站向用户终端设备发送所述 DMRS信号和所述 PDSCH数据, 以使得所述用户 终端设备选择与所述 DMRS信号对应的 PDSCH参数对所述 PDSCH数据检测后,输出所述 检测后的数据。 The base station sends the DMRS signal and the PDSCH data to the user equipment, so that the user equipment determines the PDSCH parameter corresponding to the DMRS signal to detect the PDSCH data, and outputs the detected data. .
所述基站从解调参考信号 DMRS信号集合中选择 DMRS信号之前还包括: 所述基站建立所述 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表后, 将 所述对应表发送给所述用户终端设备, 所述对应表用于指示所述各个 DMRS信号分别与 不同 PDSCH参数之间的对应关系; Before the base station selects the DMRS signal from the demodulation reference signal DMRS signal set, the method further includes: after the base station establishes a correspondence table between each DMRS signal and the PDSCH parameter in the DMRS signal set, sending, by the base station, the correspondence table to the user a terminal device, where the correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters;
所述基站从解调参考信号 DMRS信号集合中选择 DMRS信号包括: The selecting, by the base station, the DMRS signal from the demodulation reference signal DMRS signal set includes:
所述基站根据所述 PDSCH数据的 PDSCH参数和所述对应表,从所述 DMRS信号集合 中选择与所述 PDSCH参数对应的 DMRS信号。 And the base station selects, according to the PDSCH parameter of the PDSCH data and the correspondence table, a DMRS signal corresponding to the PDSCH parameter from the DMRS signal set.
所述基站根据所述 PDSCH数据的 PDSCH参数和所述对应表,从所述 DMRS信号集合 中选择与所述 PDSCH参数对应的 DMRS信号包括: And selecting, by the base station, the DMRS signal corresponding to the PDSCH parameter from the DMRS signal set according to the PDSCH parameter of the PDSCH data and the correspondence table, including:
所述基站根据所述 PDSCH数据的长度和发送所述 PDSCH数据所需要的物理资源块 对 PRB pair的个数、 以及所述对应表, 从所述 DMRS信号集合中选择 DMRS信号。 The base station selects a DMRS signal from the DMRS signal set according to the length of the PDSCH data and the number of physical resource blocks to the PRB pair required to transmit the PDSCH data, and the correspondence table.
所述基站从解调参考信号 DMRS信号集合中选择 DMRS信号包括: The selecting, by the base station, the DMRS signal from the demodulation reference signal DMRS signal set includes:
所述基站根据网络协议中定义的所述 DMRS信号集合中各个 DMRS信号与 PDSCH 参数的对应表, 从所述 DMRS信号集合中选择与所述 PDSCH数据的 PDSCH参数对应的 And selecting, by the base station, a PDSCH parameter corresponding to the PDSCH data from the DMRS signal set according to a correspondence table between each DMRS signal and a PDSCH parameter in the DMRS signal set defined in a network protocol.
DMRS信号, DMRS signal,
其中,所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应 关系。 The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
所述基站向用户终端设备发送所述 DMRS信号和所述 PDSCH数据之前还包括: 所述基站通过用户终端设备的标识加扰所述 DMRS信号; Before the sending, by the base station, the DMRS signal and the PDSCH data to the user equipment, the method further includes: the base station scrambling the DMRS signal by using an identifier of the user equipment;
所述基站向用户终端设备发送所述 DMRS信号包括: The sending, by the base station, the DMRS signal to the user terminal device includes:
所述基站向与所述标识对应的用户设备发送所述加扰后的 DMRS信号。 Sending, by the base station, the scrambled DMRS signal to a user equipment corresponding to the identifier.
一种数据的传输装置, 包括: A data transmission device includes:
选择单元, 用于从解调参考信号 DMRS信号集合中选择 DMRS信号, 所述 DMRS信
号集合中各个 DMRS信号分别对应一组物理下行共享信道 PDSCH参数,所述 PDSCH参数 用于指示 PDSCH数据的信息; a selecting unit, configured to select a DMRS signal from the demodulation reference signal DMRS signal set, the DMRS signal Each DMRS signal in the set of numbers corresponds to a set of physical downlink shared channel PDSCH parameters, where the PDSCH parameters are used to indicate information of PDSCH data;
发送单元, 用于向用户终端设备发送通过所述选择单元选择的 DMRS信号和所述 PDSCH数据,以使得与所述用户终端设备选择与所述 DMRS信号对应的 PDSCH参数对所 述 PDSCH数据检测后, 输出所述检测后的数据。 a sending unit, configured to send, to the user equipment, the DMRS signal selected by the selecting unit and the PDSCH data, so that the PDSCH parameter corresponding to the DMRS signal is selected by the user equipment to detect the PDSCH data , outputting the detected data.
所述装置还包括: The device also includes:
建立单元, 用于在选择单元从 DMRS信号集合中选择 DMRS信号之前, 建立所述 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表, 并将所述对应表发送给所述 用户终端设备,所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的 对应关系; And a establishing unit, configured to: before the selecting unit selects the DMRS signal from the DMRS signal set, establish a correspondence table of each DMRS signal and the PDSCH parameter in the DMRS signal set, and send the correspondence table to the user terminal device, where The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters;
所述选择单元, 具体用于根据所述 PDSCH数据的 PDSCH参数和所述对应表, 从所 述 DMRS信号集合中选择与所述 PDSCH参数对应的 DMRS信号。 The selecting unit is specifically configured to select, according to the PDSCH parameter of the PDSCH data and the correspondence table, a DMRS signal corresponding to the PDSCH parameter from the DMRS signal set.
所述选择单元, 具体还用于根据所述 PDSCH数据的长度和发送所述 PDSCH数据所 需要的物理资源块对 PRB pair的个数、 以及所述对应表, 从所述 DMRS信号集合中选择 DMRS信号。 The selecting unit is further configured to: select, according to the length of the PDSCH data, the number of physical resource block pairs of PRB pairs required to send the PDSCH data, and the correspondence table, select a DMRS from the DMRS signal set. signal.
所述选择单元, 具体还用于根据网络协议中定义的所述 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表,从所述 DMRS信号集合中选择与所述 PDSCH数据的 PDSCH参数对应的 DMRS信号, The selecting unit is further configured to: select, according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol, a DMRS corresponding to the PDSCH parameter of the PDSCH data from the DMRS signal set. Signal,
其中,所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应 关系。 The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
所述装置还包括: The device also includes:
加扰单元, 用于通过用户终端设备的标识加扰所述选择单元选择的 DMRS信号; 所述发送单元,还用于向与所述标识对应的用户设备发送通过所述加扰单元加扰后 的 DMRS信号。 a scrambling unit, configured to scramble the DMRS signal selected by the selecting unit by using an identifier of the user terminal device, where the sending unit is further configured to send, after being scrambled by the scrambling unit, the user equipment corresponding to the identifier DMRS signal.
另一种数据的传输方法, 包括: Another method of data transmission includes:
用户终端设备接收基站发送的解调参考信号 DMRS信号和物理下行共享信道 PDSCH数据; The user terminal device receives the demodulation reference signal DMRS signal and the physical downlink shared channel PDSCH data sent by the base station;
所述用户终端设备选择与所述 DMRS信号对应的 PDSCH参数, 其中, 所述 PDSCH 参数用于指示所述 PDSCH数据的信息; The user terminal device selects a PDSCH parameter corresponding to the DMRS signal, where the PDSCH parameter is used to indicate information of the PDSCH data;
所述用户终端设备根据所述 PDSCH参数对所述 PDSCH数据检测后, 输出所述检测
后的数据。 After detecting, by the user equipment, the PDSCH data according to the PDSCH parameter, outputting the detection After the data.
所述用户终端设备选择与所述 DMRS信号对应的 PDSCH参数包括: The selecting, by the user equipment, the PDSCH parameters corresponding to the DMRS signal includes:
所述用户终端设备根据所述基站配置的 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表, 选择与所述 DMRS信号对应的 PDSCH参数, 其中, 所述对应表用 于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应关系; 或者 The user terminal device selects a PDSCH parameter corresponding to the DMRS signal according to a correspondence table between each DMRS signal and a PDSCH parameter in the DMRS signal set configured by the base station, where the correspondence table is used to indicate the DMRS signals. Correspondence with different PDSCH parameters respectively; or
所述用户终端设备根据网络协议中定义的所述 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表, 选择与所述 DMRS信号对应的 PDSCH参数, 其中, 所述对应表用 于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应关系。 The user terminal device selects a PDSCH parameter corresponding to the DMRS signal according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol, where the correspondence table is used to indicate the each Correspondence between DMRS signals and different PDSCH parameters.
所述用户终端设备接收基站发送的解调参考信号 DMRS信号包括: The user terminal device receiving the demodulation reference signal DMRS signal sent by the base station includes:
所述用户终端设备接收所述基站发送的加扰后的 DMRS信号, 其中, 所述 DMRS信 号为所述基站通过所述用户终端设备的标识进行加扰的; The user terminal device receives the scrambled DMRS signal sent by the base station, where the DMRS signal is scrambled by the base station by using the identifier of the user terminal device;
所述用户终端设备接收基站发送的解调参考信号 DMRS信号和物理下行共享信道 PDSCH数据之后还包括: After receiving the demodulation reference signal DMRS signal and the physical downlink shared channel PDSCH data sent by the base station, the user terminal device further includes:
所述用户终端设备解扰所述加扰后的 DMRS信号。 The user terminal device descrambles the scrambled DMRS signal.
另一种数据的传输装置, 包括: Another data transmission device includes:
接收单元, 用于接收基站发送的解调参考信号 DMRS信号和物理下行共享信道 PDSCH数据; a receiving unit, configured to receive a demodulation reference signal DMRS signal and a physical downlink shared channel PDSCH data sent by the base station;
选择单元, 用于选择与所述接收单元接收的 DMRS信号对应的 PDSCH参数, 其中, 所述 PDSCH参数用于指示所述 PDSCH数据的信息; a selecting unit, configured to select a PDSCH parameter corresponding to the DMRS signal received by the receiving unit, where the PDSCH parameter is used to indicate information of the PDSCH data;
检测单元, 用于根据所述选择单元选择的 PDSCH参数对所述 PDSCH数据检测后, 输出所述检测后的数据。 And a detecting unit, configured to output the detected data after detecting the PDSCH data according to the PDSCH parameter selected by the selecting unit.
所述选择单元, 具体用于根据所述基站配置的 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表, 选择与所述 DMRS信号对应的 PDSCH参数, 其中, 所述对应表用 于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应关系; 或者 The selecting unit is configured to: select, according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set configured by the base station, a PDSCH parameter corresponding to the DMRS signal, where the correspondence table is used to indicate the Corresponding relationship between each DMRS signal and different PDSCH parameters; or
所述选择单元, 具体用于根据网络协议中定义的所述 DMRS信号集合中各个 DMRS 信号与 PDSCH参数的对应表, 选择与所述 DMRS信号对应的 PDSCH参数, 其中, 所述对 应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应关系。 The selecting unit is specifically configured to: select a PDSCH parameter corresponding to the DMRS signal according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in a network protocol, where the correspondence table is used to indicate Corresponding relationship between the respective DMRS signals and different PDSCH parameters.
所述接收单元,还用于接收所述基站发送的加扰后的 DMRS信号,其中,所述 DMRS 信号为所述基站通过所述用户终端设备的标识进行加扰的; The receiving unit is further configured to receive the scrambled DMRS signal sent by the base station, where the DMRS signal is scrambled by the base station by using an identifier of the user terminal device;
所述装置还包括:
解扰单元, 用于解扰所述接收单元接收的加扰后的 DMRS信号。 The device also includes: And a descrambling unit, configured to descramble the scrambled DMRS signal received by the receiving unit.
本发明实施例提供的数据的传输方法及装置, 基站从解调参考信号 DMRS信号集合 中选择 DMRS信号, 然后基站向用户终端设备发送所述 DMRS信号和所述 PDSCH数据, 以使得与所述标识对应的用户终端设备选择与所述 DMRS信号对应的 PDSCH参数对所 述 PDSCH数据检测后, 输出所述检测后的数据。 目前通常通过 PDCCH/EPDCCH信道和 PDSCH信道共同完成一次通信, 然而由于用户终端设备对 PDCCH/EPDCCH信道是需要 进行盲检测的, 并且单个 PDCCH/EPDCCH信道进行盲检测时复杂度已经很大, 如果要 把多个 PDCCH/EPDCCH信道进行合并,这样导致用户终端设备需要对 PDCCH/EPDCCH 信道进行盲检测的次数会更多, 造成用户终端设备的运算量和功耗都很大。 本发明实施 例通过由 PDSCH信道中的 DMRS信号作为 PDSCH数据的 PDSCH参数的承载, 可以避免 用户终端设备对 PDCCH^PDCCH信道进行盲检测, 从而降低了用户终端设备的运算量 和功耗, 并且在数据传输过程中由于不再需要 PDCCH/EPDCCH信道, 因此也减少了系 统的开销。 附图说明 为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例或现有技术描述中 所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明的一些 实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以根据这 些附图获得其它的附图。 The data transmission method and apparatus provided by the embodiment of the present invention, the base station selects a DMRS signal from the demodulation reference signal DMRS signal set, and then the base station sends the DMRS signal and the PDSCH data to the user terminal equipment, so as to be associated with the identifier. After the corresponding user terminal device selects the PDSCH parameter corresponding to the DMRS signal and detects the PDSCH data, the detected data is output. At present, the communication is usually performed by the PDCCH/EPDCCH channel and the PDSCH channel. However, since the user terminal device needs to perform blind detection on the PDCCH/EPDCCH channel, and the blind detection of the single PDCCH/EPDCCH channel is complicated, if Combining multiple PDCCH/EPDCCH channels, the number of times that the user terminal equipment needs to perform blind detection on the PDCCH/EPDCCH channel is more, and the calculation amount and power consumption of the user terminal equipment are large. The embodiment of the present invention can prevent the user terminal device from blindly detecting the PDCCH PDCCH channel by using the DMRS signal in the PDSCH channel as the bearer of the PDSCH parameter of the PDSCH data, thereby reducing the calculation amount and power consumption of the user terminal device, and The PDCCH/EPDCCH channel is no longer needed during data transmission, thus reducing the overhead of the system. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are merely Some embodiments of the present invention may also be used to obtain other drawings based on these drawings without departing from the prior art.
图 1为本发明实施例提供的一种数据的传输方法流程图; FIG. 1 is a flowchart of a method for transmitting data according to an embodiment of the present invention;
图 2为本发明实施例提供的一种数据的传输结构示意图; 2 is a schematic diagram of a data transmission structure according to an embodiment of the present invention;
图 3为本发明实施例提供的基站结构示意图; FIG. 3 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;
图 4为本发明实施例提供的另一种数据的传输方法流程图; 4 is a flowchart of another method for transmitting data according to an embodiment of the present invention;
图 5为本发明实施例提供的另一种数据的传输装置结构示意图; FIG. 5 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present disclosure;
图 6为本发明实施例提供的用户终端设备结构示意图; FIG. 6 is a schematic structural diagram of a user terminal device according to an embodiment of the present disclosure;
图 7为本发明实施例提供的物理资源块对的个数为 4时的映射示意图; FIG. 7 is a schematic diagram of mapping when the number of physical resource block pairs is 4 according to an embodiment of the present disclosure;
图 8为本发明实施例提供的一种 DMRS信号和 PDSCH参数对应关系示意图; 图 9为本发明实施例提供的另一种 DMRS信号和 PDSCH参数对应关系示意图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整 地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部的实施例。 基 于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有 其它实施例, 都属于本发明保护的范围。 FIG. 8 is a schematic diagram of a DMRS signal and a PDSCH parameter corresponding relationship according to an embodiment of the present invention; FIG. 9 is a schematic diagram of another DMRS signal and a PDSCH parameter corresponding relationship according to an embodiment of the present invention. detailed description 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, but not all of the embodiments. 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.
为使本发明技术方案的优点更加清楚, 下面结合附图和实施例对本发明作详细说 明。 In order to make the advantages of the technical solutions of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and embodiments.
本实施例提供一种数据的传输方法, 如图 1所示, 所述方法包括: This embodiment provides a data transmission method. As shown in FIG. 1, the method includes:
101、 基站从解调参考信号 DMRS信号集合中选择 DMRS信号。 101. The base station selects a DMRS signal from the demodulation reference signal DMRS signal set.
其中, 所述 DMRS信号集合中各个 DMRS信号分别对应一组物理下行共享信道 PDSCH参数, 所述 PDSCH参数用于指示 PDSCH数据的信息。 所述 DMRS信号集合中的 各个 DMRS信号可以用序列的形式表示, 即一个 DMRS信号对应一个序列, 并且优选地, 序列间具有很好的互相关特性, 以保证通信质量较高。 Each DMRS signal in the DMRS signal set corresponds to a set of physical downlink shared channel PDSCH parameters, and the PDSCH parameter is used to indicate information of PDSCH data. Each DMRS signal in the DMRS signal set may be represented in the form of a sequence, that is, one DMRS signal corresponds to one sequence, and preferably, the sequences have good cross-correlation characteristics to ensure high communication quality.
步骤 101之前还可以包括: 所述基站建立所述 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表后, 将对应表发送给用户终端设备, 其中, 所述对应表用于指示所 述各个 DMRS信号分别与不同 PDSCH参数之间的对应关系。 The step 101 may further include: after the base station establishes a correspondence table between the DMRS signals and the PDSCH parameters in the DMRS signal set, and sends the correspondence table to the user terminal device, where the correspondence table is used to indicate the DMRSs. Correspondence between signals and different PDSCH parameters.
具体地,基站根据所述 PDSCH数据的 PDSCH参数和所述对应表,从所述 DMRS信号 集合中选择与所述 PDSCH参数对应的 DMRS信号。例如,基站可以根据所述 PDSCH数据 的长度和发送所述 PDSCH数据所需要的物理资源块对 PRB pair的个数、 以及所述对应 表, 从所述 DMRS信号集合中选择 DMRS信号。 Specifically, the base station selects a DMRS signal corresponding to the PDSCH parameter from the DMRS signal set according to the PDSCH parameter of the PDSCH data and the correspondence table. For example, the base station may select a DMRS signal from the DMRS signal set according to the length of the PDSCH data and the number of physical resource block pairs PRB pair required to transmit the PDSCH data, and the correspondence table.
可替换地, 基站根据网络协议中定义的所述 DMRS信号集合中各个 DMRS信号与 Alternatively, the base station according to each DMRS signal in the DMRS signal set defined in the network protocol
PDSCH参数的对应表, 从所述 DMRS信号集合中选择与所述 PDSCH数据的 PDSCH参数 对应的 DMRS信号, 其中, 所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH 参数之间的对应关系。 a correspondence table of the PDSCH parameters, the DMRS signal corresponding to the PDSCH parameter of the PDSCH data is selected from the DMRS signal set, where the correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters relationship.
对于本实施例, 对应表中 PDSCH参数的具体信息可以灵活设定, 例如, PDSCH参 数具体可以设定为 PDSCH数据的长度和发送 PDSCH数据所需要的物理资源块对 PRB pair个数, PRB pair映射示意图可以如图 7所示, 图 7中 PDSCH参数中的 PRB pair个数设 定为 4个; DMRS信号与 PDSCH参数的对应表可以如图 8所示, 即若当前发送的 PDSCH 数据长度为 20比特, 并且需要 6个物理资源块对发送数据时, 基站就选择并发送对应表 中与 (20、 6)对应的 DMRS信号序列 。 用户终端设备收到 DMRS信号序列 后, 会从 对应表中获取与 DMRS信号序列 对应的 PDSCH参数 (20、 6) 对 PDSCH数据进行检测
后, 输出检测后的数据, 从而可以有效避免进行盲检测的问题。 For the embodiment, the specific information of the PDSCH parameter in the corresponding table can be flexibly set. For example, the PDSCH parameter can be specifically set to the length of the PDSCH data and the number of the physical resource block pair PRB pair required to transmit the PDSCH data, and the PRB pair mapping The schematic diagram can be as shown in FIG. 7. The number of PRB pairs in the PDSCH parameter in FIG. 7 is set to four; the correspondence table between the DMRS signal and the PDSCH parameter can be as shown in FIG. 8, that is, if the currently transmitted PDSCH data length is 20 Bits, and when six physical resource block pairs are required to transmit data, the base station selects and transmits a DMRS signal sequence corresponding to (20, 6) in the correspondence table. After receiving the DMRS signal sequence, the user terminal device obtains the PDSCH parameter corresponding to the DMRS signal sequence from the correspondence table (20, 6), and detects the PDSCH data. After that, the detected data is output, so that the problem of blind detection can be effectively avoided.
再例如, PDSCH参数具体还可以设定为 PDSCH数据的长度和编码版本号, 其中, 编码版本号可认为是 PDSCH数据进行编码后进行速率匹配 (速率匹配是对编码后各个比 特重复或打孔的次数)的索引, 比如编码版本号 1是对编码后的数据的前 N个比特重复 3 次, 剩余比特重复 2次; 编码版本号 2是对编码后的数据的最后 N个比特重复 3次, 剩余比 特重复 2次等。此时 DMRS信号与 PDSCH参数的对应表可以如图 9所示, 即若当前发送的 PDSCH数据长度为 40比特, PDSCH数据编码后的版本号为 2时, 基站就选择并发送对应 表中与 (40, 2)对应的 DMRS信号序列 。 用户终端设备收到 DMRS信号序列 后, 会从 对应表中获取与 DMRS信号序列 对应的 PDSCH参数 (40, 2)对 PDSCH数据进行检测后, 输出检测后的数据, 从而也可以有效避免进行盲检测的问题。 For example, the PDSCH parameter may be specifically set to the length of the PDSCH data and the coded version number, where the coded version number may be considered to be rate matched after the PDSCH data is encoded (the rate matching is repeated or punctured for each bit after encoding). The index of the number of times, for example, the code version number 1 is repeated 3 times for the first N bits of the encoded data, and the remaining bits are repeated 2 times; the code version number 2 is repeated 3 times for the last N bits of the encoded data. The remaining bits are repeated twice. At this time, the correspondence table between the DMRS signal and the PDSCH parameter may be as shown in FIG. 9, that is, if the currently transmitted PDSCH data length is 40 bits, and the PDSCH data encoded version number is 2, the base station selects and transmits the correspondence table and ( 40, 2) Corresponding DMRS signal sequence. After receiving the DMRS signal sequence, the user terminal device obtains the PDSCH parameter corresponding to the DMRS signal sequence from the correspondence table (40, 2), and then detects the PDSCH data, and outputs the detected data, thereby effectively avoiding blind detection. The problem.
102、 基站通过用户终端设备的标识加扰所述 DMRS信号。 102. The base station scrambles the DMRS signal by using an identifier of the user equipment.
具体地, 基站可以通过 RNTI (Radio Network Temporary Identifier, 射频网络临时标 识符) 加扰所述 DMRS信号。 Specifically, the base station may scramble the DMRS signal by using an RNTI (Radio Network Temporary Identifier).
103、 基站向与所述标识对应的用户终端设备发送所述加扰后的 DMRS信号和所述 PDSCH数据。 103. The base station sends the scrambled DMRS signal and the PDSCH data to a user equipment device corresponding to the identifier.
进一步地, 以使得与所述标识对应的用户终端设备选择与所述 DMRS信号对应的 PDSCH参数对所述 PDSCH数据检测后, 输出所述检测后的数据。 Further, after the user equipment corresponding to the identifier selects a PDSCH parameter corresponding to the DMRS signal to detect the PDSCH data, the detected data is output.
本实施例提供的数据的传输方法, 通过由 PDSCH信道中的 DMRS信号作为 PDSCH 数据的 PDSCH参数的承载, 以避免对 PDCCH/EPDCCH信道进行盲检测, 从而降低了用 户终端设备的运算量和功耗, 并且在数据传输过程中由于不再需要 PDCCH^PDCCH信 道, 因此也减少了系统的 Overhead。 The data transmission method provided in this embodiment uses the DMRS signal in the PDSCH channel as the bearer of the PDSCH parameter of the PDSCH data to avoid blind detection of the PDCCH/EPDCCH channel, thereby reducing the calculation amount and power consumption of the user terminal device. And in the data transmission process, since the PDCCH ^ PDCCH channel is no longer needed, the Overhead of the system is also reduced.
本实施例提供一种数据的传输装置, 如图 2所示, 所述装置可以包括: 选择单元 21、 发送单元 22。 The embodiment provides a data transmission device. As shown in FIG. 2, the device may include: a selection unit 21 and a sending unit 22.
选择单元 21, 可以用于从解调参考信号 DMRS信号集合中选择 DMRS信号。 The selecting unit 21 can be configured to select a DMRS signal from the set of demodulation reference signal DMRS signals.
其中, 所述 DMRS信号集合中各个 DMRS信号分别对应一组物理下行共享信道 The DMRS signals in the DMRS signal set respectively correspond to a group of physical downlink shared channels.
PDSCH参数, 所述 PDSCH参数用于指示 PDSCH数据的信息。 PDSCH parameter, the PDSCH parameter is used to indicate information of PDSCH data.
发送单元 22, 可以用于向用户终端设备发送通过所述选择单元 21选择的 DMRS信号 和所述 PDSCH数据,以使得用户终端设备选择与所述 DMRS信号对应的 PDSCH参数对所 述 PDSCH数据检测后, 输出所述检测后的数据。 The sending unit 22 may be configured to send the DMRS signal and the PDSCH data selected by the selecting unit 21 to the user terminal device, so that the user terminal device selects the PDSCH parameter corresponding to the DMRS signal and detects the PDSCH data. , outputting the detected data.
所述装置还可以包括:
建立单元 23, 可以用于在选择单元 21从 DMRS信号集合中选择 DMRS信号之前, 建 立所述 DMRS信号集合中各个 DMRS信号与 PD SCH参数的对应表, 并将对应表发送给用 户终端设备。 The device may further include: The establishing unit 23 is configured to: before the selecting unit 21 selects the DMRS signal from the DMRS signal set, establish a correspondence table between each DMRS signal and the PD SCH parameter in the DMRS signal set, and send the correspondence table to the user terminal device.
其中,所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应 关系。 The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
选择单元 21, 具体可以用于根据所述 PDSCH数据的 PDSCH参数和所述对应表, 从 所述 DMRS信号集合中选择与所述 PDSCH参数对应的 DMRS信号。 The selecting unit 21 is specifically configured to select, according to the PDSCH parameter of the PDSCH data and the correspondence table, a DMRS signal corresponding to the PDSCH parameter from the DMRS signal set.
选择单元 21, 具体还可以用于根据所述 PDSCH数据的长度和发送所述 PDSCH数据 所需要的物理资源块对 PRB pair的个数、 以及所述对应表, 从所述 DMRS信号集合中选 择 DMRS信号。 The selecting unit 21 may be further configured to: select, according to the length of the PDSCH data, the number of physical resource block pairs of PRB pairs required to send the PDSCH data, and the correspondence table, select a DMRS from the DMRS signal set. signal.
所述选择单元 21, 具体还可以用于根据网络协议中定义的所述 DMRS信号集合中各 个 DMRS信号与 PDSCH参数的对应表,从所述 DMRS信号集合中选择与所述 PDSCH数据 的 PDSCH参数对应的 DMRS信号。 The selecting unit 21 may be further configured to: select, according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol, a PDSCH parameter corresponding to the PDSCH data from the DMRS signal set. DMRS signal.
其中,所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应 关系。 The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
所述装置还可以包括: The device may further include:
加扰单元 24, 可以用于通过用户终端设备的标识加扰所述选择单元选择的 DMRS信 号。 The scrambling unit 24 can be configured to scramble the DMRS signal selected by the selecting unit by the identifier of the user terminal device.
所述发送单元 22,还可以用于向与所述标识对应的用户设备发送通过所述加扰单元 24加扰后的 DMRS信号。 The sending unit 22 may be further configured to send, by the user equipment corresponding to the identifier, a DMRS signal scrambled by the scrambling unit 24.
本实施例提供的数据的传输装置的实体可以为基站, 如图 3所示, 所述基站可以包 括: 处理器 31、 发送器 32。 The entity of the data transmission device provided in this embodiment may be a base station. As shown in FIG. 3, the base station may include: a processor 31 and a transmitter 32.
处理器 31, 可以用于从解调参考信号 DMRS信号集合中选择 DMRS信号。 The processor 31 can be configured to select a DMRS signal from the set of demodulation reference signal DMRS signals.
其中, 所述 DMRS信号集合中各个 DMRS信号分别对应一组物理下行共享信道 PDSCH参数, 所述 PDSCH参数用于指示 PDSCH数据的信息。 Each DMRS signal in the DMRS signal set corresponds to a set of physical downlink shared channel PDSCH parameters, and the PDSCH parameter is used to indicate information of PDSCH data.
发送器 32, 可以用于向用户终端设备发送通过所述处理器 31选择的 DMRS信号和所 述 PDSCH数据, 以使得用户终端设备选择与所述 DMRS信号对应的 PDSCH参数对所述 PDSCH数据检测后, 输出所述检测后的数据。 The transmitter 32 may be configured to send, to the user equipment, the DMRS signal selected by the processor 31 and the PDSCH data, so that the user equipment, after selecting the PDSCH parameter corresponding to the DMRS signal, detects the PDSCH data. , outputting the detected data.
处理器 31, 还可以用于建立所述 DMRS信号集合中各个 DMRS信号与 PDSCH参数的 对应表, 并将对应表发送给用户终端设备。
其中,所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应 关系。 The processor 31 is further configured to establish a correspondence table between each DMRS signal and the PDSCH parameter in the DMRS signal set, and send the correspondence table to the user terminal device. The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
处理器 31, 具体可以用于根据所述 PDSCH数据的 PDSCH参数和所述对应表, 从所 述 DMRS信号集合中选择与所述 PDSCH参数对应的 DMRS信号。 The processor 31 is specifically configured to select, according to the PDSCH parameter of the PDSCH data and the correspondence table, a DMRS signal corresponding to the PDSCH parameter from the DMRS signal set.
处理器 31, 具体还可以用于根据所述 PDSCH数据的长度和发送所述 PDSCH数据所 需要的物理资源块对 PRB pair的个数、 以及所述对应表, 从所述 DMRS信号集合中选择 DMRS信号。 The processor 31 may be further configured to: select, according to the length of the PDSCH data, a number of physical resource block pairs of PRB pairs required to send the PDSCH data, and the correspondence table, select a DMRS from the DMRS signal set. signal.
处理器 31, 具体还可以用于根据网络协议中定义的所述 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表,从所述 DMRS信号集合中选择与所述 PDSCH数据的 PDSCH参数对应的 DMRS信号。 The processor 31 may be further configured to: select, according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol, a DMRS corresponding to the PDSCH parameter of the PDSCH data from the DMRS signal set. signal.
其中,所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应 关系。 The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
处理器 31, 还可以用于通过用户终端设备的标识加扰所述 DMRS信号。 The processor 31 is further configured to scramble the DMRS signal by using an identifier of the user terminal device.
所述发送器 32,还可以用于向与所述标识对应的用户设备发送通过所述处理器 31加 扰后的 DMRS信号。 The transmitter 32 may be further configured to send, by the user equipment corresponding to the identifier, a DMRS signal that is scrambled by the processor 31.
本实施例提供的数据的传输装置, 通过由 PDSCH信道中的 DMRS信号作为 PDSCH 数据的 PDSCH参数的承载, 以避免对 PDCCH/EPDCCH信道进行盲检测, 从而降低了用 户终端设备的运算量和功耗, 并且在数据传输过程中由于不再需要 PDCCH^PDCCH信 道, 因此也减少了系统的开销。 The data transmission apparatus provided in this embodiment uses the DMRS signal in the PDSCH channel as the bearer of the PDSCH parameter of the PDSCH data to avoid blind detection of the PDCCH/EPDCCH channel, thereby reducing the calculation amount and power consumption of the user terminal equipment. And the PDCCH^PDCCH channel is no longer needed in the data transmission process, thereby reducing the overhead of the system.
本实施例提供另一种数据的传输方法, 如图 4所示, 所述方法包括: This embodiment provides another method for transmitting data. As shown in FIG. 4, the method includes:
401、 用户终端设备接收基站发送的解调参考信号 DMRS信号和物理下行共享信道 PDSCH数据。 401. The user equipment receives the demodulation reference signal DMRS signal and the physical downlink shared channel PDSCH data sent by the base station.
优选地, 所述用户终端设备接收所述基站发送的加扰后的 DMRS信号, 其中, 所述 DMRS信号为所述基站通过所述用户终端设备的标识进行加扰的。 此时, 步骤 302之前 还可以包括: 所述用户终端设备解扰所述加扰后的 DMRS信号。 Preferably, the user terminal device receives the scrambled DMRS signal sent by the base station, where the DMRS signal is scrambled by the base station by using the identifier of the user terminal device. At this time, before step 302, the method may further include: the user terminal device descrambles the scrambled DMRS signal.
402、 用户终端设备选择与所述 DMRS信号对应的 PDSCH参数。 402. The user equipment determines a PDSCH parameter corresponding to the DMRS signal.
其中, 所述 PDSCH参数用于指示所述 PDSCH数据的信息。 The PDSCH parameter is used to indicate information of the PDSCH data.
具体地, 用户终端设备根据所述基站配置的 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表, 选择与所述 DMRS信号对应的 PDSCH参数, 其中, 所述对应表用 于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应关系。
可替换地, 用户终端设备根据网络协议中定义的所述 DMRS信号集合中各个 DMRS 信号与 PDSCH参数的对应表, 选择与所述 DMRS信号对应的 PDSCH参数, 其中, 所述对 应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应关系。 Specifically, the user terminal device selects a PDSCH parameter corresponding to the DMRS signal according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set configured by the base station, where the correspondence table is used to indicate the each DMRS. Correspondence between signals and different PDSCH parameters. Alternatively, the user terminal device selects a PDSCH parameter corresponding to the DMRS signal according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol, where the correspondence table is used to indicate Corresponding relationships between the respective DMRS signals and different PDSCH parameters are respectively described.
对于本实施例, 对应表中 PDSCH参数的具体信息可以灵活设定, 例如, PDSCH参 数具体可以设定为 PDSCH数据的长度和发送 PDSCH数据所需要的物理资源块对 PRB pair个数, PRB pair映射示意图可以如图 7所示, 图 7中 PDSCH参数中的 PRB pair个数设 定为 4个; DMRS信号与 PDSCH参数的对应表可以如图 8所示, 即若当前发送的 PDSCH 数据长度为 20比特, 并且需要 6个物理资源块对发送数据时, 用户终端设备收到 DMRS 信号序列 后, 会从对应表中获取与 DMRS信号序列 对应的 PDSCH参数 (20、 6) 对 PDSCH数据进行检测后, 输出检测后的数据, 从而可以有效避免进行盲检测的问题。 For the embodiment, the specific information of the PDSCH parameter in the corresponding table can be flexibly set. For example, the PDSCH parameter can be specifically set to the length of the PDSCH data and the number of the physical resource block pair PRB pair required to transmit the PDSCH data, and the PRB pair mapping The schematic diagram can be as shown in FIG. 7. The number of PRB pairs in the PDSCH parameter in FIG. 7 is set to four; the correspondence table between the DMRS signal and the PDSCH parameter can be as shown in FIG. 8, that is, if the currently transmitted PDSCH data length is 20 Bits, and when six physical resource block pairs are required to transmit data, after receiving the DMRS signal sequence, the user terminal equipment acquires the PDSCH parameters corresponding to the DMRS signal sequence from the correspondence table (20, 6), after detecting the PDSCH data, The detected data is output, so that the problem of blind detection can be effectively avoided.
再例如, PDSCH参数具体还可以设定为 PDSCH数据的长度和编码版本号, 其中, 编码版本号可认为是 PDSCH数据进行编码后进行速率匹配 (速率匹配是对编码后各个比 特重复或打孔的次数)的索引, 比如编码版本号 1是对编码后的数据的前 N个比特重复 3 次, 剩余比特重复 2次; 编码版本号 2是对编码后的数据的最后 N个比特重复 3次, 剩余比 特重复 2次等。此时 DMRS信号与 PDSCH参数的对应表可以如图 9所示, 即若当前发送的 PDSCH数据长度为 40比特, PDSCH数据编码后的版本号为 2时,用户终端设备收到 DMRS 信号序列 后, 会从对应表中获取与 DMRS信号序列 对应的 PDSCH参数 (40, 2)对 PDSCH数据进行检测后, 输出检测后的数据, 从而也可以有效避免进行盲检测的问题。 For example, the PDSCH parameter may be specifically set to the length of the PDSCH data and the coded version number, where the coded version number may be considered to be rate matched after the PDSCH data is encoded (the rate matching is repeated or punctured for each bit after encoding). The index of the number of times, for example, the code version number 1 is repeated 3 times for the first N bits of the encoded data, and the remaining bits are repeated 2 times; the code version number 2 is repeated 3 times for the last N bits of the encoded data. The remaining bits are repeated twice. The correspondence table between the DMRS signal and the PDSCH parameter may be as shown in FIG. 9 , that is, if the currently transmitted PDSCH data length is 40 bits, and the PDSCH data encoded version number is 2, after the user terminal device receives the DMRS signal sequence, The PDSCH parameters (40, 2) corresponding to the DMRS signal sequence are obtained from the correspondence table, and the detected PDSCH data is output, and the detected data is output, so that the problem of blind detection can be effectively avoided.
403、 用户终端设备根据所述 PDSCH参数对所述 PDSCH数据检测后, 输出所述检测 后的数据。 403. After detecting, by the user equipment, the PDSCH data according to the PDSCH parameter, outputting the detected data.
本实施例提供的另一种数据的传输方法, 通过由 PDSCH信道中的 DMRS信号作为 PDSCH数据的 PDSCH参数的承载, 用户终端设备可以直接获取与 DMRS信号对应的 PDSCH参数进行检测后输出数据, 以避免对 PDCCH/EPDCCH信道进行盲检测, 从而降 低了用户终端设备的运算量和功耗, 并且在数据传输过程中由于不再需要 PDCCH/EPDCCH信道, 因此也减少了系统的 Overhead。 Another method for transmitting data according to the embodiment, the DMRS signal in the PDSCH channel is used as the bearer of the PDSCH parameter of the PDSCH data, and the user equipment can directly obtain the PDSCH parameter corresponding to the DMRS signal and output the data. The PDCCH/EPDCCH channel is prevented from being blindly detected, thereby reducing the computational complexity and power consumption of the user equipment, and the PDCCH/EPDCCH channel is no longer needed in the data transmission process, thereby reducing the overhead of the system.
本实施例提供另一种数据的传输装置, 如图 5所示, 所述装置可以包括: 接收单元 51、 选择单元 52、 检测单元 53。 The embodiment provides another data transmission device. As shown in FIG. 5, the device may include: a receiving unit 51, a selecting unit 52, and a detecting unit 53.
接收单元 51, 可以用于接收基站发送的解调参考信号 DMRS信号和物理下行共享信 道 PDSCH数据。 The receiving unit 51 is configured to receive a demodulation reference signal DMRS signal and a physical downlink shared channel PDSCH data sent by the base station.
选择单元 52, 可以用于选择与所述接收单元 41接收的 DMRS信号对应的 PDSCH参
数。 The selecting unit 52 is configured to select a PDSCH parameter corresponding to the DMRS signal received by the receiving unit 41. Number.
其中, 所述 PDSCH参数用于指示所述 PDSCH数据的信息。 The PDSCH parameter is used to indicate information of the PDSCH data.
检测单元 53, 可以用于根据所述选择单元 42选择的 PDSCH参数对所述 PDSCH数据 检测后, 输出所述检测后的数据。 The detecting unit 53 may be configured to output the detected data after detecting the PDSCH data according to the PDSCH parameter selected by the selecting unit 42.
所述选择单元 52, 具体可以用于根据所述基站配置的 DMRS信号集合中各个 DMRS 信号与 PDSCH参数的对应表, 选择与所述 DMRS信号对应的 PDSCH参数。 The selecting unit 52 is specifically configured to select a PDSCH parameter corresponding to the DMRS signal according to a correspondence table between each DMRS signal and a PDSCH parameter in the DMRS signal set configured by the base station.
其中,所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应 关系。 The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
所述选择单元 52, 具体还可以用于根据网络协议中定义的所述 DMRS信号集合中各 个 DMRS信号与 PDSCH参数的对应表, 选择与所述 DMRS信号对应的 PDSCH参数。 The selecting unit 52 may be further configured to: select a PDSCH parameter corresponding to the DMRS signal according to a correspondence table between each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol.
其中,所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应 关系。 The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
接收单元 51, 还可以用于接收所述基站发送的加扰后的 DMRS信号, 其中, 所述 DMRS信号为所述基站通过所述用户终端设备的标识进行加扰的。 The receiving unit 51 is further configured to receive the scrambled DMRS signal sent by the base station, where the DMRS signal is scrambled by the base station by using an identifier of the user terminal device.
所述装置还可以包括: The device may further include:
解扰单元 54, 可以用于解扰所述接收单元 41接收的加扰后的 DMRS信号。 The descrambling unit 54 can be used to descramble the scrambled DMRS signal received by the receiving unit 41.
本实施例提供的另一种数据的传输装置的实体可以为用户终端设备, 如图 6所示, 所述用户设备可以包括: 接收器 61、 处理器 62。 The entity of the data transmission device provided in this embodiment may be a user terminal device. As shown in FIG. 6, the user device may include: a receiver 61 and a processor 62.
接收器 61, 可以用于接收基站发送的解调参考信号 DMRS信号和物理下行共享信道 PDSCH数据。 The receiver 61 is configured to receive a demodulation reference signal DMRS signal and a physical downlink shared channel PDSCH data sent by the base station.
处理器 62, 可以用于选择与所述接收器 61接收的 DMRS信号对应的 PDSCH参数。 其中, 所述 PDSCH参数用于指示所述 PDSCH数据的信息。 The processor 62 is configured to select a PDSCH parameter corresponding to the DMRS signal received by the receiver 61. The PDSCH parameter is used to indicate information of the PDSCH data.
处理器 62, 还可以用于根据 PDSCH参数对所述 PDSCH数据检测后, 输出所述检测 后的数据。 The processor 62 is further configured to: after detecting the PDSCH data according to the PDSCH parameter, output the detected data.
处理器 62, 具体可以用于根据所述基站配置的 DMRS信号集合中各个 DMRS信号与 The processor 62 is specifically configured to: according to each DMRS signal in the DMRS signal set configured by the base station
PDSCH参数的对应表, 选择与所述 DMRS信号对应的 PDSCH参数。 A correspondence table of PDSCH parameters selects a PDSCH parameter corresponding to the DMRS signal.
其中,所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应 关系。 The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
处理器 62, 具体还可以用于根据网络协议中定义的所述 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表, 选择与所述 DMRS信号对应的 PDSCH参数。
其中,所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应 关系。 The processor 62 is further configured to: select a PDSCH parameter corresponding to the DMRS signal according to a correspondence table between each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol. The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
接收器 61,还可以用于接收所述基站发送的加扰后的 DMRS信号,其中,所述 DMRS 信号为所述基站通过所述用户终端设备的标识进行加扰的。 The receiver 61 is further configured to receive the scrambled DMRS signal sent by the base station, where the DMRS signal is scrambled by the base station by using an identifier of the user equipment.
处理器 62, 还可以用于解扰所述接收器 61接收的加扰后的 DMRS信号。 The processor 62 is further configured to descramble the scrambled DMRS signal received by the receiver 61.
本实施例提供的另一种数据的传输装置, 通过由 PDSCH信道中的 DMRS信号作为 PDSCH数据的 PDSCH参数的承载, 可以直接获取与 DMRS信号对应的 PDSCH参数进行 检测后输出数据, 以避免对 PDCCH/EPDCCH信道进行盲检测, 从而降低了用户终端设 备的运算量和功耗, 并且在数据传输过程中由于不再需要 PDCCH^PDCCH信道, 因此 也减少了系统的开销。 Another data transmission apparatus provided in this embodiment, by using the DMRS signal in the PDSCH channel as the bearer of the PDSCH parameter of the PDSCH data, may directly acquire the PDSCH parameter corresponding to the DMRS signal and output the data, so as to avoid the PDCCH. The /EPDCCH channel performs blind detection, thereby reducing the computational complexity and power consumption of the user terminal equipment, and reduces the overhead of the system since the PDCCH PDCCH channel is no longer needed in the data transmission process.
本发明实施例提供的数据的传输装置可以实现上述提供的方法实施例, 具体功能实 现请参见方法实施例中的说明, 在此不再赘述。 本发明实施例提供的数据的传输方法及 装置可以适用于通信系统领域, 但不仅限于此。 The data transmission apparatus provided by the embodiment of the present invention may implement the foregoing method embodiments. For details of the implementation, refer to the description in the method embodiment, and details are not described herein. The data transmission method and apparatus provided by the embodiments of the present invention can be applied to the field of communication systems, but are not limited thereto.
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程, 是可以通 过计算机程序来指令相关的硬件来完成,所述的程序可存储于一计算机可读取存储介质 中, 该程序在执行时, 可包括如上述各方法的实施例的流程。 其中, 所述的存储介质可 为磁碟、光盘、只读存储记忆体(Read-Only Memory, ROM)或随机存储记忆体(Random Access Memory, RAM) 等。 以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限于此, 任何 熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想到的变化或替换, 都 应涵盖在本发明的保护范围之内。 因此, 本发明的保护范围应该以权利要求的保护范围 为准。
A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM). The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any change or replacement that can be easily conceived by those skilled in the art within the technical scope of the present invention is All should be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1、 一种数据的传输方法, 其特征在于, 包括: A method for transmitting data, comprising:
基站从解调参考信号 DMRS信号集合中选择 DMRS信号, 所述 DMRS信号集合中各 个 DMRS信号分别对应一组物理下行共享信道 PDSCH参数, 所述 PDSCH参数用于指示 PDSCH数据的信息; The eNB selects a DMRS signal from the DMRS signal set, and each DMRS signal in the DMRS signal set respectively corresponds to a set of physical downlink shared channel PDSCH parameters, where the PDSCH parameter is used to indicate information of the PDSCH data;
所述基站向用户终端设备发送所述 DMRS信号和所述 PDSCH数据, 以使得所述用户 终端设备选择与所述 DMRS信号对应的 PDSCH参数对所述 PDSCH数据检测后,输出所述 检测后的数据。 The base station sends the DMRS signal and the PDSCH data to the user equipment, so that the user equipment determines the PDSCH parameter corresponding to the DMRS signal to detect the PDSCH data, and outputs the detected data. .
2、 根据权利要求 1所述的数据传输方法, 其特征在于, 所述基站从解调参考信号 DMRS信号集合中选择 DMRS信号之前还包括: The data transmission method according to claim 1, wherein the base station further includes: before selecting the DMRS signal from the demodulation reference signal DMRS signal set:
所述基站建立所述 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表后, 将 所述对应表发送给所述用户终端设备, 所述对应表用于指示所述各个 DMRS信号分别与 不同 PDSCH参数之间的对应关系; After the base station establishes a correspondence table between the DMRS signals and the PDSCH parameters in the DMRS signal set, the mapping table is sent to the user equipment, where the corresponding table is used to indicate that each DMRS signal is different from the PDSCH. Correspondence between parameters;
所述基站从解调参考信号 DMRS信号集合中选择 DMRS信号包括: The selecting, by the base station, the DMRS signal from the demodulation reference signal DMRS signal set includes:
所述基站根据所述 PDSCH数据的 PDSCH参数和所述对应表,从所述 DMRS信号集合 中选择与所述 PDSCH参数对应的 DMRS信号。 And the base station selects, according to the PDSCH parameter of the PDSCH data and the correspondence table, a DMRS signal corresponding to the PDSCH parameter from the DMRS signal set.
3、根据权利要求 1或 2所述的数据传输方法,其特征在于,所述基站根据所述 PDSCH 数据的 PDSCH参数和所述对应表,从所述 DMRS信号集合中选择与所述 PDSCH参数对应 的 DMRS信号包括: The data transmission method according to claim 1 or 2, wherein the base station selects, according to the PDSCH parameter of the PDSCH data and the correspondence table, a correspondence with the PDSCH parameter from the DMRS signal set. The DMRS signals include:
所述基站根据所述 PDSCH数据的长度和发送所述 PDSCH数据所需要的物理资源块 对 PRB pair的个数、 以及所述对应表, 从所述 DMRS信号集合中选择 DMRS信号。 The base station selects a DMRS signal from the DMRS signal set according to the length of the PDSCH data and the number of physical resource blocks to the PRB pair required to transmit the PDSCH data, and the correspondence table.
4、 根据权利要求 1所述的数据传输方法, 其特征在于, 所述基站从解调参考信号 DMRS信号集合中选择 DMRS信号包括: The data transmission method according to claim 1, wherein the selecting, by the base station, the DMRS signal from the demodulation reference signal DMRS signal set comprises:
所述基站根据网络协议中定义的所述 DMRS信号集合中各个 DMRS信号与 PDSCH 参数的对应表, 从所述 DMRS信号集合中选择与所述 PDSCH数据的 PDSCH参数对应的 DMRS信号, Determining, by the base station, a DMRS signal corresponding to a PDSCH parameter of the PDSCH data from the DMRS signal set according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in a network protocol, where
其中,所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应 关系。 The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
5、 根据权利要求 1-4任一项所述的数据传输方法, 其特征在于, 所述基站向用户终 端设备发送所述 DMRS信号和所述 PDSCH数据之前还包括:
所述基站通过用户终端设备的标识加扰所述 DMRS信号; The data transmission method according to any one of claims 1 to 4, wherein before the transmitting, by the base station, the DMRS signal and the PDSCH data to the user equipment, the method further includes: The base station scrambles the DMRS signal by using an identifier of the user terminal device;
所述基站向用户终端设备发送所述 DMRS信号包括: The sending, by the base station, the DMRS signal to the user terminal device includes:
所述基站向与所述标识对应的用户设备发送所述加扰后的 DMRS信号。 Sending, by the base station, the scrambled DMRS signal to a user equipment corresponding to the identifier.
6、 一种数据的传输方法, 其特征在于, 包括: 6. A method of transmitting data, comprising:
用户终端设备接收基站发送的解调参考信号 DMRS信号和物理下行共享信道 The user terminal device receives the demodulation reference signal DMRS signal sent by the base station and the physical downlink shared channel
PDSCH数据; PDSCH data;
所述用户终端设备选择与所述 DMRS信号对应的 PDSCH参数, 其中, 所述 PDSCH 参数用于指示所述 PDSCH数据的信息; The user terminal device selects a PDSCH parameter corresponding to the DMRS signal, where the PDSCH parameter is used to indicate information of the PDSCH data;
所述用户终端设备根据所述 PDSCH参数对所述 PDSCH数据检测后, 输出所述检测 后的数据。 After detecting, by the user equipment, the PDSCH data according to the PDSCH parameter, the detected data is output.
7、 根据权利要求 6所述的数据传输方法, 其特征在于, 所述用户终端设备选择与所 述 DMRS信号对应的 PDSCH参数包括: The data transmission method according to claim 6, wherein the selecting, by the user equipment, the PDSCH parameters corresponding to the DMRS signal comprises:
所述用户终端设备根据所述基站配置的 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表, 选择与所述 DMRS信号对应的 PDSCH参数, 其中, 所述对应表用 于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应关系; 或者 The user terminal device selects a PDSCH parameter corresponding to the DMRS signal according to a correspondence table between each DMRS signal and a PDSCH parameter in the DMRS signal set configured by the base station, where the correspondence table is used to indicate the DMRS signals. Correspondence with different PDSCH parameters respectively; or
所述用户终端设备根据网络协议中定义的所述 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表, 选择与所述 DMRS信号对应的 PDSCH参数, 其中, 所述对应表用 于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应关系。 The user terminal device selects a PDSCH parameter corresponding to the DMRS signal according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in the network protocol, where the correspondence table is used to indicate the each Correspondence between DMRS signals and different PDSCH parameters.
8、 根据权利要求 6或 7所述的数据传输方法, 其特征在于, 所述用户终端设备接收 基站发送的解调参考信号 DMRS信号包括: The data transmission method according to claim 6 or 7, wherein the receiving, by the user equipment, the demodulation reference signal DMRS signal sent by the base station comprises:
所述用户终端设备接收所述基站发送的加扰后的 DMRS信号, 其中, 所述 DMRS信 号为所述基站通过所述用户终端设备的标识进行加扰的; The user terminal device receives the scrambled DMRS signal sent by the base station, where the DMRS signal is scrambled by the base station by using the identifier of the user terminal device;
所述用户终端设备接收基站发送的解调参考信号 DMRS信号和物理下行共享信道 PDSCH数据之后还包括: After receiving the demodulation reference signal DMRS signal and the physical downlink shared channel PDSCH data sent by the base station, the user terminal device further includes:
所述用户终端设备解扰所述加扰后的 DMRS信号。 The user terminal device descrambles the scrambled DMRS signal.
9、 一种数据的传输装置, 其特征在于, 包括: 9. A data transmission apparatus, comprising:
选择单元, 用于从解调参考信号 DMRS信号集合中选择 DMRS信号, 所述 DMRS信 号集合中各个 DMRS信号分别对应一组物理下行共享信道 PDSCH参数,所述 PDSCH参数 用于指示 PDSCH数据的信息; a selection unit, configured to select a DMRS signal from the DMRS signal set, where each DMRS signal in the DMRS signal set corresponds to a set of physical downlink shared channel PDSCH parameters, where the PDSCH parameter is used to indicate information of the PDSCH data;
发送单元, 用于向用户终端设备发送通过所述选择单元选择的 DMRS信号和所述
PDSCH数据,以使得所述用户终端设备选择与所述 DMRS信号对应的 PDSCH参数对所述 PDSCH数据检测后, 输出所述检测后的数据。 a sending unit, configured to send, to the user equipment, a DMRS signal selected by the selecting unit, and the The PDSCH data is used to cause the user terminal equipment to select a PDSCH parameter corresponding to the DMRS signal to detect the PDSCH data, and then output the detected data.
10、 根据权利要求 9所述的数据传输装置, 其特征在于, 还包括: The data transmission device according to claim 9, further comprising:
建立单元, 用于在选择单元从 DMRS信号集合中选择 DMRS信号之前, 建立所述 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表, 并将所述对应表发送给所述 用户终端设备,所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的 对应关系; And a establishing unit, configured to: before the selecting unit selects the DMRS signal from the DMRS signal set, establish a correspondence table of each DMRS signal and the PDSCH parameter in the DMRS signal set, and send the correspondence table to the user terminal device, where The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters;
所述选择单元, 具体用于根据所述 PDSCH数据的 PDSCH参数和所述对应表, 从所 述 DMRS信号集合中选择与所述 PDSCH参数对应的 DMRS信号。 The selecting unit is specifically configured to select, according to the PDSCH parameter of the PDSCH data and the correspondence table, a DMRS signal corresponding to the PDSCH parameter from the DMRS signal set.
11、 根据权利要求 9或 10所述的数据传输装置, 其特征在于, 11. A data transmission device according to claim 9 or 10, characterized in that
所述选择单元, 具体还用于根据所述 PDSCH数据的长度和发送所述 PDSCH数据所 需要的物理资源块对 PRB pair的个数、 以及所述对应表, 从所述 DMRS信号集合中选择 DMRS信号。 The selecting unit is further configured to: select, according to the length of the PDSCH data, the number of physical resource block pairs of PRB pairs required to send the PDSCH data, and the correspondence table, select a DMRS from the DMRS signal set. signal.
12、 根据权利要求 9所述的数据传输装置, 其特征在于, 12. The data transmission device according to claim 9, wherein:
所述选择单元, 具体还用于根据网络协议中定义的所述 DMRS信号集合中各个 The selecting unit is further configured to be used according to each of the DMRS signal sets defined in a network protocol.
DMRS信号与 PDSCH参数的对应表,从所述 DMRS信号集合中选择与所述 PDSCH数据的 PDSCH参数对应的 DMRS信号, a correspondence table between the DMRS signal and the PDSCH parameter, and selecting, from the DMRS signal set, a DMRS signal corresponding to a PDSCH parameter of the PDSCH data,
其中,所述对应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应 关系。 The correspondence table is used to indicate a correspondence between the respective DMRS signals and different PDSCH parameters.
13、根据权利要求 9-12任一项所述的数据传输装置, 其特征在于, 所述装置还包括: 加扰单元, 用于通过用户终端设备的标识加扰所述选择单元选择的 DMRS信号; 所述发送单元,还用于向与所述标识对应的用户设备发送通过所述加扰单元加扰后 的 DMRS信号。 The data transmission device according to any one of claims 9 to 12, wherein the device further comprises: a scrambling unit, configured to scramble the DMRS signal selected by the selection unit by using an identifier of the user terminal device The sending unit is further configured to send, to the user equipment corresponding to the identifier, a DMRS signal that is scrambled by the scrambling unit.
14、 一种数据的传输装置, 其特征在于, 包括: 14. A data transmission apparatus, comprising:
接收单元, 用于接收基站发送的解调参考信号 DMRS信号和物理下行共享信道 a receiving unit, configured to receive a demodulation reference signal DMRS signal and a physical downlink shared channel sent by the base station
PDSCH数据; PDSCH data;
选择单元, 用于选择与所述接收单元接收的 DMRS信号对应的 PDSCH参数, 其中, 所述 PDSCH参数用于指示所述 PDSCH数据的信息; a selecting unit, configured to select a PDSCH parameter corresponding to the DMRS signal received by the receiving unit, where the PDSCH parameter is used to indicate information of the PDSCH data;
检测单元, 用于根据所述选择单元选择的 PDSCH参数对所述 PDSCH数据检测后, 输出所述检测后的数据。
And a detecting unit, configured to output the detected data after detecting the PDSCH data according to the PDSCH parameter selected by the selecting unit.
15、 根据权利要求 14所述的数据传输装置, 其特征在于, 15. The data transmission device according to claim 14, wherein:
所述选择单元, 具体用于根据所述基站配置的 DMRS信号集合中各个 DMRS信号与 PDSCH参数的对应表, 选择与所述 DMRS信号对应的 PDSCH参数, 其中, 所述对应表用 于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应关系; 或者 The selecting unit is configured to: select, according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set configured by the base station, a PDSCH parameter corresponding to the DMRS signal, where the correspondence table is used to indicate the Corresponding relationship between each DMRS signal and different PDSCH parameters; or
所述选择单元, 具体用于根据网络协议中定义的所述 DMRS信号集合中各个 DMRS 信号与 PDSCH参数的对应表, 选择与所述 DMRS信号对应的 PDSCH参数, 其中, 所述对 应表用于指示所述各个 DMRS信号分别与不同 PDSCH参数之间的对应关系。 The selecting unit is specifically configured to: select a PDSCH parameter corresponding to the DMRS signal according to a correspondence table of each DMRS signal and a PDSCH parameter in the DMRS signal set defined in a network protocol, where the correspondence table is used to indicate Corresponding relationship between the respective DMRS signals and different PDSCH parameters.
16、 根据权利要求 14或 15所述的数据传输装置, 其特征在于, 16. A data transmission device according to claim 14 or 15, wherein
所述接收单元,还用于接收所述基站发送的加扰后的 DMRS信号,其中,所述 DMRS 信号为所述基站通过所述用户终端设备的标识进行加扰的; The receiving unit is further configured to receive the scrambled DMRS signal sent by the base station, where the DMRS signal is scrambled by the base station by using an identifier of the user terminal device;
所述装置还包括: The device also includes:
解扰单元, 用于解扰所述接收单元接收的加扰后的 DMRS信号。
And a descrambling unit, configured to descramble the scrambled DMRS signal received by the receiving unit.
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CN101883401A (en) * | 2009-05-07 | 2010-11-10 | 大唐移动通信设备有限公司 | Resource scheduling method and device of feedback information |
CN101964676A (en) * | 2009-07-22 | 2011-02-02 | 中兴通讯股份有限公司 | Method and base station for sending relay link downlink demodulation reference signal and relay station |
CN102036297A (en) * | 2010-12-24 | 2011-04-27 | 大唐移动通信设备有限公司 | Method and equipment for transmitting PDCCH, method and equipment for detecting PDCCH, and system |
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CN101964676A (en) * | 2009-07-22 | 2011-02-02 | 中兴通讯股份有限公司 | Method and base station for sending relay link downlink demodulation reference signal and relay station |
CN101827444A (en) * | 2010-03-31 | 2010-09-08 | 中兴通讯股份有限公司 | Signaling configuration system and method for measuring reference signal |
CN102036297A (en) * | 2010-12-24 | 2011-04-27 | 大唐移动通信设备有限公司 | Method and equipment for transmitting PDCCH, method and equipment for detecting PDCCH, and system |
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