WO2014107838A1 - 解调参考信号的配置、映射方法、信道估计方法和装置 - Google Patents
解调参考信号的配置、映射方法、信道估计方法和装置 Download PDFInfo
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- WO2014107838A1 WO2014107838A1 PCT/CN2013/070202 CN2013070202W WO2014107838A1 WO 2014107838 A1 WO2014107838 A1 WO 2014107838A1 CN 2013070202 W CN2013070202 W CN 2013070202W WO 2014107838 A1 WO2014107838 A1 WO 2014107838A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
Definitions
- the present invention relates to the field of communications, and in particular, to a configuration, a mapping method, a channel estimation method and apparatus for a demodulation reference signal. Background technique
- each downlink subframe carries a PDCCH (Physical Downlink Control Channel) channel, which is used to indicate the UE (User Equipment, User Equipment, The user is referred to as the scheduling in the downlink subframe or the scheduling of the corresponding uplink subframe, and configures the uplink transmission power, activates or releases the SPS (Semi-Persistent Scheduling) transmission.
- the PDCCH channel is transmitted in the first 1 to 4 symbols of a subframe, and the specific number of occupied symbols is determined by the system bandwidth, the number of scheduled users in one subframe, and the like.
- the PDCCH channel transmission resources are not divided by RBs (Resource Blocks), and one PDCCH transmission unit is dispersed throughout the PDCCH region by the interleaver. inside.
- the PDCCH channel usually uses a Cell-specific Reference Signal (CRS) as a reference signal for demodulation.
- CRS Cell-specific Reference Signal
- the PDSCH channel is used to carry high-level signaling or user data.
- the PDSCH channel transmitted in the TM8 mode and the DMRS (Demodulation Reference Signal) pilot is used as the demodulation reference signal.
- Distribution of general DMRS pilots in a PRB pair other than the special subframe types 1, 2, 3, 4, 6, 7, 8 in the TDD (Time Division Duplexing) transmission mode Referring to FIG. 1, an OFDM (Orthogonal Frequency Division Multiplexing) symbol of a mesh portion is a possible PDCCH transmission region, and other OFDM symbols are used to carry an OFDM symbol of a PDSCH.
- the existing pilot pattern is in the middle of the PDSCH transmission area. Channel estimation is performed based on the pilot of the existing pilot pattern, and the estimation result error is small.
- NCT New Carrier Type
- the PDCCH will be replaced by an ePDCCH (enhanced PDCCH).
- the transmission method of the ePDCCH is similar to the PDSCH, and the transmission resources are divided by the PRB pair. Since the legacy PDCCH (traditional PDCCH) is no longer used in the NCT, each PRB pair is used to carry the PDSCH or The resources of the ePDCCH start from the first OFDM symbol. All REs (esource elements) carrying data in each PRB pair of the NCT are demodulated based on DMRS.
- the existing pilot pattern (the DMRS pattern shown in Figure 1) is in the right-right position in the entire PRB pair, which may cause the channel estimation quality of the first few OFDM symbols in the PRB pair to decrease, thereby affecting the subsequent Reliability of demodulation and decoding.
- Figure 2 shows the ETU (Extended Typical Urban Model) channel model with a moving speed of 30 km/h, an SNR (Signal to Noise Ratio) of 20 dB, and a receive transmit antenna of 2*.
- Rank 2
- the channel estimation error in a PRB pair varies with the OFDM symbol number.
- the error varies greatly along the time domain, and the channel estimation error on the leftmost three OFDM symbols becomes significantly larger than other OFDM symbols.
- An object of the embodiments of the present invention is to provide a DMRS configuration, a mapping method, a channel estimation method, and a device, to improve DMRS-based channel estimation performance in a high version of LTE (Release 12 and later).
- a method for configuring a demodulation reference signal includes:
- a demodulation reference signal In a physical resource block pair (PRB pair), a demodulation reference signal (DMRS) is carried by four orthogonal frequency division multiplexing (OFDM) symbols, wherein the four OFDM symbols are divided into two groups, each group It consists of two adjacent OFDM symbols, and the distance between the two sets of OFDM symbols is greater than 5 OFDM symbols.
- OFDM orthogonal frequency division multiplexing
- mapping method for demodulating a reference signal includes:
- the demodulation reference signal of the PRB pair of the LTE system is configured according to the configuration method of the demodulation reference signal according to the first aspect
- the modulation symbol carried by the port p in the RE with the time domain number being / and the frequency domain number is r
- r is the DMRS modulation symbol sequence generated according to the pseudo random sequence
- NSr ⁇ is the maximum downlink bandwidth carrying RB number
- w p Is an orthogonal mask sequence
- N is the number of subcarriers included in each PRB pair
- n PRB is the sequence number of the PRB pair in which the DMRS is located
- p is the number of ports
- ⁇ , k, and m are intermediate variables, and , / for DMRS
- a method for configuring a demodulation reference signal includes:
- Each group of DMRSs is composed of two REs carrying DMRSs, and the two REs carrying DMRSs are located in the same subcarrier and occupy two adjacent OFDM symbols.
- a mapping method of a demodulation reference signal includes:
- the demodulation reference signal of the PRB pair of the LTE system is configured according to the configuration method of the demodulation reference signal according to the third aspect
- ) is a modulation symbol carried by the port p on the RE whose time domain number is / and the frequency domain number is, r is a DMRS modulation symbol sequence generated according to the pseudo random sequence, and NST is the maximum downlink bandwidth bearer number, which is orthogonal
- N is the number of subcarriers included in each PRB pair
- ⁇ is the sequence number of the PRB pair in which the DMRS is located
- p is the number of ports
- 1'k' and m' are intermediate variables;
- a base station configured to configure a demodulation reference signal, where the base station includes:
- a configuration unit which carries a demodulation reference signal (DMRS) through four orthogonal frequency division multiplexing (OFDM) symbols in one PRB pair, where the four OFDM symbols are divided into two groups, each group consisting of two The adjacent OFDM symbols are composed, and the distance between the two sets of OFDM symbols is greater than 5 OFDM symbols.
- DMRS demodulation reference signal
- OFDM orthogonal frequency division multiplexing
- a base station configured to perform mapping of a demodulation reference signal, where the base station includes:
- a configuration unit that configures a demodulation reference signal of a PRB pair of the LTE system according to the configuration method of the demodulation reference signal according to the first aspect
- mapping unit that performs resource mapping on the configured demodulation reference signal according to the following formula:
- N ⁇ DL is the maximum downlink bandwidth bearer number (in the LTE system, this parameter is 110, see TS36.211, section 6.2.1)
- v is the orthogonal mask sequence
- N is the PRB pair.
- the number of subcarriers included, " is the sequence number of the PRB pair where the DMRS is located
- p is the number of ports
- / is the time domain number of the RE where the DMRS is located, I , or / , or
- a base station configured to configure a demodulation reference signal, where the base station includes:
- the configuration unit is configured to configure less than six groups of DMRSs in each PRB pair, where each group of DMRSs is composed of two REs carrying DMRSs, and the two REs carrying DMRSs are located in the same subcarrier and occupy two neighbors. OFDM symbol.
- a base station configured to perform mapping of a demodulation reference signal, where the base station includes:
- a configuration unit configured to configure a demodulation reference signal of a PRB pair of the LTE system according to the configuration method of the demodulation reference signal according to the third aspect
- mapping unit that performs resource mapping on the configured demodulation reference signal according to the following formula:
- gg>> is the modulation port of the port port pp on the RREE in the time domain domain sequence number is / / frequency domain domain sequence number is The symbol number, rr is the root of the DDMMRRSS modulation modulation symbol number sequence sequence generated according to the pseudo-pseudo-sequence sequence (see the TTSS3366 for the specific body-generated method method).
- NN ⁇ DDLL is the maximum bandwidth of the largest downlink and downlink line with the load carrying RRBB number (in the LLTTEE system system) In this case, the amount of this parameter is 111100, see TTSS3366..221111 chapter chapter 66..22..11)),
- ww»» is the sequence of positive orthogonal masking code sequence
- Column NN is the number of carrier wavenumbers of the sub-subcarriers contained in each package of PPRRBB ppaaiirr, ",, is the sequence number of the PPRRBB ppaaiirr where the DDMMRRSS is located, Pp is the number of port ports, 11'', 11 ⁇ '', and 11 ⁇ are the middle and intermediate variables.
- a channel estimation method includes: extracting a DMRS from a received signal according to a location of a DMRS configured by the method of the first aspect or the third aspect;
- the channel performs channel estimation.
- a user equipment includes:
- An extracting unit that extracts a DMRS from the received signal according to the location of the DMRS configured by the method of the first aspect or the third aspect;
- Generating unit which generates a DMRS sequence according to the configuration of the DMRS by the base station
- a channel estimation unit that performs channel estimation on a channel experienced by the received signal in the transmission according to the extracted DMRS and the generated DMRS sequence.
- a communication system comprising: the base station according to the fifth aspect or the sixth aspect or the seventh or eighth aspect, and the user of the tenth aspect device.
- the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a base station, the program causes the computer to perform configuration of the demodulation reference signal according to the first aspect or the third aspect in the base station
- the method further comprises the mapping method of the demodulation reference signal of the second aspect or the fourth aspect.
- the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a configuration method of the demodulation reference signal according to the first aspect or the third aspect in a base station Or the mapping method of the demodulation reference signal according to the second aspect or the fourth aspect.
- the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a terminal device, the program causes the computer to perform the channel estimation method of the ninth aspect in the terminal device.
- An embodiment of the present invention also provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to perform the channel estimation method of the ninth aspect in the terminal device.
- the DMRS-based channel estimation performance in the LTE high version can be improved by the method and apparatus of the embodiments of the present invention.
- 1 is a schematic diagram showing the distribution of a conventional DMRS in a PRB pair
- FIG. 2 is a graph showing channel estimation error in a PRB pair as a function of OFDM symbol number
- FIG. 3 is a flowchart of a method for configuring a demodulation reference signal according to Embodiment 1 of the present invention
- 4A-4E are schematic diagrams showing a configuration of configuring a DMRS according to the method of Embodiment 1;
- FIG. 5 is a schematic diagram showing simulation results of the DMRS shown in FIG. 4C and the DMRS shown in FIG. 1.
- FIG. 6 is a flowchart of a method for mapping a demodulation reference signal according to Embodiment 2 of the present invention.
- FIG. 7 is a flowchart of a method for configuring a demodulation reference signal according to Embodiment 3 of the present invention.
- Figure 8 is a schematic view showing the position of a pattern corresponding to the DMRS distribution of Figure 1;
- 9A-9E are schematic diagrams showing the distribution of DMRSs after DMRS is removed according to the method of Embodiment 4, and any two sets of DMRSs having the same frequency domain position are removed;
- 10A-10D are diagrams for configuring a DMRS according to the method of Embodiment 4, removing the outermost two groups of diagonally opposite corners.
- 11A-11D are schematic diagrams showing a distribution of DMRSs after three sets of DMRSs are removed by zigzag according to the method of Embodiment 4;
- FIG. 12 is a schematic diagram of a DMRS distribution of a DMRS configured by reducing frequency domain density according to another embodiment of the present invention.
- FIG. 13 is a schematic diagram of a DMRS distribution of a DMRS configured by reducing time domain density according to another embodiment of the present invention.
- FIG. 14 is a flowchart of a method for mapping a demodulation reference signal according to Embodiment 4 of the present invention.
- 15 is a schematic structural diagram of a base station according to Embodiment 5 of the present invention
- 16 is a schematic diagram showing the composition of a base station according to Embodiment 6 of the present invention
- FIG. 17 is a schematic diagram showing the composition of a base station according to Embodiment 7 of the present invention.
- FIG. 18 is a schematic structural diagram of a base station according to Embodiment 8 of the present invention.
- FIG. 19 is a flowchart of a channel estimation method according to an embodiment of the present invention.
- FIG. 20 is a schematic diagram of the composition of a user equipment according to an embodiment of the present invention. detailed description
- the embodiment of the present invention is described by taking the configuration and mapping of the DMRS after the introduction of the new carrier by Releasel2 as an example, but it can be understood that the embodiment of the present invention is It is not limited to the configuration and mapping of the DMRS of the above version, nor is it limited to the configuration and mapping of the pilot to the DMRS, and is applicable to other systems and other pilots involving the configuration and mapping of pilots.
- Embodiments of the present invention provide a method for configuring a demodulation reference signal.
- Figure 3 is a flow chart of the method. Referring to Figure 3, the method includes:
- Step 301 Carrying, in a physical resource block pair (PRB pair), a demodulation reference signal (DMRS) by four orthogonal frequency division multiplexing (OFDM) symbols, where the four OFDM symbols are divided into two groups. Each group consists of two adjacent OFDM symbols, and the distance between the two sets of OFDM symbols is greater than 5 OFDM symbols.
- PRB pair physical resource block pair
- OFDM orthogonal frequency division multiplexing
- 4A-4E are schematic diagrams showing the distribution of DMRS in a PRB pair when the DMRS is configured according to the method in this embodiment.
- the positions of the two sets of OFDM symbols are symmetric with respect to a boundary line of two slots constituting the PRB pair, as shown in Figs. 4A and 4B.
- the first group of OFDM symbols is the first two OFDM symbols of the first slot
- the second group of OFDM symbols is the last two OFDM symbols of the second slot.
- the first group of OFDM symbols is the second and third OFDM symbols of the first slot
- the second group of OFDM symbols is the fifth and sixth OFDM symbols of the second slot.
- the positions of the two sets of OFDM symbols are relative to the composition.
- the boundaries of the two slots of the PRB pair are asymmetric, as shown in Figures 4C-4E.
- the first group of OFDM symbols is the second and third OFDM symbols of the first slot
- the second group of OFDM symbols is the last two OFDM symbols of the second slot.
- the first set of OFDM symbols is the third and fourth OFDM symbols of the first slot
- the second set of OFDM symbols is the last two OFDM symbols of the second slot.
- the first group of OFDM symbols is the fourth and fifth OFDM symbols of the first slot
- the second group of OFDM symbols is the last two OFDM symbols of the second slot.
- the location of the DMRS in the frequency domain is not limited. In a preferred embodiment, its location in the frequency domain is the same as the standard, for example, the DMRS corresponding to one or more ports utilizes code points.
- the first, sixth, and eleventh resource particles (RE) occupying a frequency domain of a physical resource block pair (PRB pair); or, the DMRS corresponding to one or more ports utilizes a code division to occupy the frequency of one PRB pair
- the DMRS of the two REs corresponds to ports 9, 10, 12, and 14.
- the DMRS corresponding ports 9, 10, 12, 14 occupying the first, sixth, and the second REs in the frequency domain occupy the DMRS corresponding ports of the second, seventh, and twelfth REs in the frequency domain. 7, 8, 11, 13 (not shown).
- its location in the frequency domain may be different from the standard. For example, it may reduce the frequency domain density on a standard basis.
- the frequency domain location is the same in the six groups of DMRSs in the frequency domain. Any two groups, or remove the diagonally outermost two groups in the six groups of DMRSs in the frequency domain, or remove the three groups in zigzag in the six groups of DMRSs in the frequency domain, specifically in the following embodiments. Detailed description.
- FIG. 5 is a schematic diagram showing simulation results of the distribution of the DMRS shown in FIG. 4C and the distribution of the DMRS shown in FIG. 1 in the present embodiment.
- the DMRS configured by the method of the embodiment of the present invention significantly improves channel estimation performance.
- the DMRS-based channel estimation performance in the LTE high version (Release 12 and later) can be improved by the method of the embodiment of the present invention.
- the embodiment of the present invention further provides a mapping method for demodulating reference signals.
- the method is based on the configuration of the DMRS of Embodiment 1, and the DMRS is configured according to the method of Embodiment 1, and the DMRS sequence can be generated by using the same method as the existing standard.
- the mapping method of the DMRS sequence is different from the existing standard.
- Figure 6 is the embodiment of the present invention
- the method includes:
- Step 601 Configure a demodulation reference signal of a physical resource block pair of the LTE system.
- the demodulation reference signal may be configured by using the method in Embodiment 1, and the content thereof is incorporated herein, and details are not described herein again.
- Step 602 Perform resource mapping on the configured demodulation reference signal according to the following formula:
- a) is a modulation symbol carried by the port p on the RE whose time domain number is / frequency domain number
- r is a DMRS modulation symbol sequence generated according to the pseudo random sequence (refer to TS 36.211 section 6.10.3.1 for the specific generation method)
- ⁇ ⁇ is the maximum downlink bandwidth carrying RB number (in the LTE system, this parameter is 110, see TS36.211, section 6.2.1)
- k is the frequency domain number of the RE where the DMRS is located
- / is the time domain of the RE where the DMRS is located.
- Serial number. k'w' and /' are intermediate variables. It is an Orthogonal Cover Code sequence.
- n is the sequence number of the PRB pair where the DMRS is located.
- N is the number of subcarriers included in each PRB .
- the DMRS configuration is performed by the method of Embodiment 1, and the DMRS-based channel estimation performance in the LTE high version (Release 12 and later) can be improved by performing DMRS mapping in this embodiment.
- the embodiment of the present invention further provides a method for configuring a demodulation reference signal.
- the method is different from the method of the first embodiment.
- the number of DMRS pilot groups in each PRB pair is less than 6.
- each group The DMRS pilot pattern is composed of two REs that are on the same subcarrier and occupy two adjacent OFDM symbols.
- FIG. 7 is a flowchart of a method for configuring a demodulation reference signal according to the embodiment. Referring to FIG. 7, the method includes:
- Step 701 Configure less than six groups of DMRSs in each physical resource block pair, where each group of DMRSs is composed of two REs carrying DMRSs, and the two REs carrying DMRSs are located in the same subcarrier and occupy two Adjacent OFDM symbols.
- the DMRS corresponding to one or more ports utilizes the code points to occupy the first, sixth, and/or eleventh resource particles (RE) in the frequency domain; or, the DMRS corresponding to one or more ports The second, seventh and/or twelfth REs in the frequency domain are occupied by code divisions.
- RE resource particles
- the location of the DMRS in the time domain is not limited. For example, it may be based on the time domain location of the existing standard DMRS shown in FIG. 1, or may be based on the implementation shown in FIG. 4A-4E.
- the time domain location of the DMRS For convenience of description, the letters AF shown in FIG. 8 respectively correspond to a certain port or a plurality of ports corresponding to the six groups of DMRSs shown in FIG. 1 or FIG. 4A to FIG. 4E, and the method according to the embodiment is based on FIG.
- the time domain location of the existing standard DMRS is described as an example.
- the six groups of DMRSs may be reduced to four groups, that is, four groups of DMRSs are configured in each PRB pair.
- the four groups of DMRSs are maintained in the time domain.
- the density and the position are unchanged (that is, based on the time domain position of the existing DMRS pattern, or the time domain position of the DMRS pattern based on each embodiment of Embodiment 1), and the four groups of DMRSs are configured in three groups in the frequency domain. Any two sets of positions. That is, any two groups having the same frequency domain position are removed from the six groups of DMRSs in the frequency domain, for example, the A group and the B group are removed, or the C group and the D group are removed, or the E group and the F group are removed.
- 9A-9E are schematic diagrams after the DMRS is configured according to the method of the present embodiment.
- the density and position of the DMRSs of the groups A, B, C, and D of the DMRS corresponding to the ports 7, 8, 11, and 13 are kept unchanged, and the corresponding port 7 is removed.
- E, and F of the DMRS of the 11th, 11th, and 13th at the same time, the density and position of the DMRS of the DMRSs of the DMRSs corresponding to the ports 9, 10, 12, and 14 are kept unchanged, and the DMRS is removed.
- the density and position of the DMRSs of the groups A, B, E, and F of the DMRSs corresponding to the ports 7, 8, 11, and 13 are kept unchanged, and the corresponding port 7 is removed.
- Groups 8, and D of DMRS of 8, 11, and 13; at the same time, groups of VIII, B, E, and F of DMRS corresponding to ports 9, 10, 12, and 14 are maintained.
- the density and position of the DMRS are unchanged, and the C and D groups of the DMRS corresponding to the ports 9, 10, 12, and 14 are removed.
- the DMRS of the corresponding port 7, 8, 11, 13 is maintained.
- the density and position of the DMRS of each group of D, E, and F are unchanged, and the A and B groups of the DMRS corresponding to the ports 7, 8, 11, and 13 are removed; meanwhile, the corresponding ports 9, 10, 12, and 14 are maintained.
- the density and position of the DMRS of each group of D, E, and F are unchanged, and the A and B groups of the DMRS corresponding to ports 9, 10, 12, and 14 are removed.
- the density and position of the DMRSs of the groups A, B, C, and D of the DMRS corresponding to the ports 7, 8, 11, and 13 are kept unchanged, and the corresponding port 7 is removed.
- 8, E, and F of the DMRS of the 11th, 11th, and 13th; at the same time, the density and position of the DMRS of the DMRS 3 ⁇ 4 C, D, E, and F groups corresponding to the ports 9, 10, 12, and 14 are kept unchanged, and the DMRS is removed.
- the density and position of the DMRSs of the groups DMRS 3 ⁇ 4 C, D, E, and F of the corresponding ports 7, 8, 11, 13 are kept unchanged, and the corresponding port 7 is removed.
- the six groups of DMRSs may be reduced to four groups, that is, four groups of DMRSs are configured in each PRB pair, and the density of the four groups of DMRSs in the time domain is maintained.
- the position is unchanged (that is, based on the time domain position of the existing DMRS pattern, or the time domain position of the DMRS pattern based on each embodiment of Embodiment 1), preferably, two sets of DMRS configurations in the four sets of DMRS are configured Positioning the middle group of the three groups of positions in the frequency domain; and configuring the other two of the four groups of DMRSs at positions of the first group and the third group of the three groups of positions in the frequency domain, and configured
- the DMRS at the location of the first group and the DMRS configured at the location of the third group are located in different time slots of the PRB pair. That is, the outermost two diagonally diagonal groups are removed from the six groups of DMRSs in the frequency domain, for example, the A group and the F group are
- 10A-10D are schematic diagrams after the DMRS is configured according to the method of the present embodiment.
- the density and position of the DMRSs of the groups 8, C, D, and E of the DMRSs corresponding to the ports 7, 8, 11, and 13 are kept unchanged, and the corresponding port 7 is removed.
- 8, 11, 13 DMRS Group A and Group F at the same time, keep the density and position of the DMRS of the groups VIII, C, D, and F of the DMRS corresponding to ports 9, 10, 12, and 14 unchanged, and remove the corresponding ports 9, 10, and 12 , 14 DMRS Group B and
- the density and position of the DMRSs of the groups VIII, C, D, and F of the DMRSs corresponding to the ports 7, 8, 11, and 13 are kept unchanged, and the corresponding port 7 is removed.
- the density and position of the DMRSs of the groups 8, C, D, and E of the DMRSs corresponding to the ports 7, 8, 11, and 13 are kept unchanged, and the corresponding port 7 is removed.
- the density and position of the DMRSs of the groups VIII, C, D, and F of the DMRSs corresponding to the ports 7, 8, 11, and 13 are kept unchanged, and the corresponding port 7 is removed.
- the six groups of DMRSs may be reduced to three groups, that is, three groups of DMRSs are configured in each PRB pair, and the density of the three groups of DMRSs in the time domain is maintained.
- the location is unchanged (that is, based on the time domain location of the existing DMRS pattern, or the time domain location of the DMRS pattern based on the embodiments of Embodiment 1).
- the three groups of DMRSs are respectively configured in the frequency domain.
- the DMRSs at the locations of the first group in the frequency domain and the DMRSs in the locations of the third group in the frequency domain are located in the same time slot of the PRB pair, and are configured in the frequency domain.
- the DMRS at the location of the second group and the DMRSs located at the locations of the first and third groups in the frequency domain are located in different time slots of the PRB pair. That is, three groups are removed in a zigzag manner in six groups of DMRSs in the frequency domain, for example, group A, group D, and group E are removed, or group B, group C, and group F are removed.
- 11A-11D are schematic diagrams after the DMRS is configured according to the method of the present embodiment.
- the DMRS of the corresponding port 7, 8, 11, 13 is maintained.
- the density and position of the DMRS of each group D and E are unchanged, and the B group, the C group, and the F group of the DMRS corresponding to the ports 7, 8, 11, and 13 are removed; meanwhile, the corresponding ports 9, 10, 12, and 14 are maintained.
- the density and position of the DMRS of each group of A, D, and E of the DMRS are unchanged, and the B group, the C group, and the F group of the DMRS corresponding to the ports 9, 10, 12, and 14 are removed.
- the DMRS of the corresponding port 7, 8, 11, 13 is maintained.
- the density and position of the DMRS of each group C and F are unchanged, and the A, D, and E groups of the DMRS corresponding to the ports 7, 8, 11, and 13 are removed; meanwhile, the corresponding ports 9, 10, 12, and 14 are maintained.
- the density and position of the DMRS of each group of B, C, and F of the DMRS are unchanged, and the A, D, and E groups of the DMRS corresponding to the ports 9, 10, 12, and 14 are removed.
- the DMRS of the corresponding port 7, 8, 11, 13 is maintained.
- the density and position of the DMRS of each group C and F are unchanged, and the A, D, and E groups of the DMRS corresponding to the ports 7, 8, 11, and 13 are removed; meanwhile, the corresponding ports 9, 10, 12, and 14 are maintained.
- the density and position of the DMRS of each of the DMRS groups 8, D, and E are unchanged, and the B group, the C group, and the F group of the DMRS corresponding to the ports 9, 10, 12, and 14 are removed.
- the DMRS of the corresponding port 7, 8, 11, 13 is maintained.
- the density and position of the DMRS of each group D and E are unchanged, and the B group, the C group, and the F group of the DMRS corresponding to the ports 7, 8, 11, and 13 are removed; meanwhile, the corresponding ports 9, 10, 12, and 14 are maintained.
- the density and position of the DMRS of each group of B, C, and F of the DMRS are unchanged, and the A, D, and E groups of the DMRS corresponding to the ports 9, 10, 12, and 14 are removed.
- the above embodiment is based on the configuration method and the pattern of the existing DMRS as an example, and the present embodiment is described.
- the four OFDM symbols in the time domain are respectively The two OFDM symbols are located in two time slots of one PRB pair, and the distance between the two sets of OFDM symbols is equal to 5 OFDM symbols, which corresponds to the configuration pattern of the existing DMRS.
- the present embodiment is not limited thereto.
- the embodiment may be based on the DMRS configuration method and the configuration pattern of the first embodiment.
- the difference from the previous embodiment is The distance between the two sets of OFDM symbols is greater than 5 OFDM symbols, which corresponds to the DMRS pattern of the foregoing Embodiment 1. In other embodiments, the distance between the two sets of OFDM symbols may also be less than 5 OFDM symbols. For example, the two sets of OFDM symbols are located in the same time slot and are separated by 1 OFDM symbol.
- the pilot pattern after reducing the frequency domain density as shown in Figs. 12A-12D can be generated by reducing the frequency domain density.
- the order of the frequency domain numbers from small to large may be from top to bottom or from bottom to top, which is not limited herein.
- the patterns listed in FIG. 12A to FIG. 12D are also based on the time domain position of the configuration pattern of the existing DMRS, but the embodiment of the present invention is not limited thereto, and FIGS. 12A to 12D may also be based on the DMRS of the embodiment 1.
- the configuration pattern changes the time domain position.
- a pilot pattern having a reduced time domain density as shown in Figs. 13A to 13B by reducing the time domain density.
- the two adjacent OFDM symbols are located in one slot of one PRB pair.
- the two adjacent OFDM symbols may also be located in two time slots of one PRB pair. For example, each time slot of the two slots has an OFDM symbol. But the two OFDM symbols are adjacent, that is, the last OFDM symbol of the first slot is adjacent to the first OFDM symbol of the second slot.
- the channel transmission environment may be better than the Macro cell, such as a higher signal-to-noise ratio and a slower channel time.
- the pilot density in the unit PRB pair can be appropriately reduced by the method of the embodiment, and the number of REs for carrying user data can be increased, thereby improving the transmission throughput.
- the embodiment of the present invention further provides a mapping method for demodulating reference signals, which is based on Embodiment 3
- the DMRS is configured according to the method of Embodiment 3, and the DMRS sequence can be generated by the same method as the existing standard, but the mapping method of the DMRS sequence is different from the existing standard.
- FIG. 14 is a flowchart of a mapping method of a DMRS according to the embodiment. Referring to FIG. 14, the method includes:
- Step 1401 Configure a demodulation reference signal of a physical resource block pair of the LTE system.
- the demodulation reference signal may be configured by using the method in Embodiment 3, and the content thereof is incorporated herein, and details are not described herein again.
- Step 1402 Perform resource mapping on the configured demodulation reference signal according to the following formula:
- g is a modulation symbol carried by the port ⁇ on the RE whose time domain number is /, the frequency domain number is, and r is a DMRS modulation symbol sequence generated according to the pseudo random sequence (refer to the specific generation method) TS36.211 Section 6.10.3.1), for the maximum downlink bandwidth bearer number (in the LTE system, this parameter is 110, see TS36.211, section 6.2.1), which is the frequency domain number of the RE where the DMRS is located, / is the DMRS
- the time domain numbers of the REs, w' and /', are intermediate variables.
- w p () is an Orthogonal Cover Code sequence.
- ⁇ is the serial number of the PRBpair where the DMRS is located.
- N 5 is the number of subcarriers included in each PRB.
- ' is the relative position of the subcarrier carrying the DMRS RE in one physical resource block.
- Bay IJ If the frequency domain numbers are in ascending order from top to bottom, Bay IJ:
- Bay IJ If the frequency domain number is in descending order from top to bottom, Bay IJ:
- Bay IJ If the frequency domain numbers are in ascending order from top to bottom, Bay IJ:
- Bay IJ If the frequency domain number is in descending order from top to bottom, Bay IJ:
- Bay IJ If the frequency domain numbers are in ascending order from top to bottom, Bay IJ:
- Bay IJ If the frequency domain number is in descending order from top to bottom, Bay IJ:
- Bay IJ If the frequency domain numbers are in ascending order from top to bottom, Bay IJ:
- Bay IJ If the frequency domain number is in descending order from top to bottom, Bay IJ:
- all and a21 correspond to the letter A shown in FIG. 8, a31 and a41 correspond to the letter B shown in FIG. 8, and al2 and a22 correspond to the letter C shown in FIG. 8, and a32 and a42 correspond to the letter D shown in FIG. Al3 and a23 correspond to the letter E, a33 and a43 shown in Fig. 8 corresponding to the letter F shown in Fig. 8. And so on.
- the first three lines in the table are For one PRB pair, the last three lines correspond to another PRB pair.
- the sequence p (0) corresponds to the pilot sequence, and is not described here.
- the pilot sequence and the spreading code of the 16 locations on the RB resource are respectively expressed as follows:
- the DMRS is configured according to the method of Embodiment 3, and the DMRS is generated by using the existing pilot sequence generation method. After the DMRS is mapped according to the mapping method of this embodiment, the RE of the corresponding vacated location is vacated for transmission. data.
- the DMRS is configured by the method of Embodiment 3, and the DMRS mapping is performed by the method of the embodiment, so that the data throughput in the LTE high version (Release 12 and later) can be improved.
- the embodiment of the present invention further provides a base station, as described in the following embodiment 5.
- the principle of solving the problem is similar to the method of the first embodiment. Therefore, the specific implementation may refer to the implementation of the method in the first embodiment. The repetitions are not repeated here.
- the embodiment of the present invention further provides a base station for configuring a demodulation reference signal
- FIG. 15 is a schematic diagram of the composition of the base station.
- the base station includes:
- the configuration unit 151 is configured to pass four orthogonal frequency division multiplexing in one physical resource block pair (PRB pair) (OFDM) symbol bearer demodulation reference signal (DMRS), wherein the 4 OFDM symbols are divided into two groups, each group consisting of two adjacent OFDM symbols, and the distance between the two sets of OFDM symbols More than 5 OFDM symbols.
- PRB pair physical resource block pair
- DMRS symbol bearer demodulation reference signal
- the positions of the two sets of OFDM symbols are symmetric with respect to a boundary line of two slots constituting the PRB pair.
- the first set of OFDM symbols is the first two OFDM symbols of the first slot
- the second set of OFDM symbols is the last two OFDM symbols of the second slot.
- the first set of OFDM symbols is the second and third OFDM symbols of the first slot
- the second set of OFDM symbols is the fifth and sixth OFDM symbols of the second slot.
- the positions of the two sets of OFDM symbols are asymmetric with respect to a boundary line of two slots constituting the PRB pair.
- the first set of OFDM symbols is the second and third OFDM symbols of the first slot
- the second set of OFDM symbols is the last two OFDM symbols of the second slot.
- the first set of OFDM symbols is the third and fourth OFDM symbols of the first slot
- the second set of OFDM symbols is the last two OFDM symbols of the second slot.
- the first set of OFDM symbols is the fourth and fifth OFDM symbols of the first slot
- the second set of OFDM symbols is the last two OFDM symbols of the second slot.
- the DMRS corresponding to one or more ports uses the code points to occupy the first, sixth, and eleventh resource particles (RE) in the frequency domain; or, the DMRS utilization code corresponding to one or more ports The minutes occupy the second, seventh and twelfth REs in the frequency domain.
- RE resource particles
- the DMRS-based channel estimation performance in the LTE high version (Release 12 and later versions) can be improved.
- the embodiment of the present invention further provides a base station, as described in Embodiment 6 below. Since the principle of solving the problem is similar to the method of Embodiment 2, the specific implementation may refer to the implementation of the method in Embodiment 2. The repetitions are not repeated here.
- An embodiment of the present invention further provides a base station for performing mapping of a demodulation reference signal
- FIG. 16 is a schematic diagram of a composition of the base station.
- the base station includes:
- the configuration unit 161 configured to configure the LTE system according to the configuration method of the demodulation reference signal described in Embodiment 1 a demodulation reference signal of a physical resource block pair;
- mapping unit 162 which performs resource mapping on the configured demodulation reference signal according to the following formula:
- the DMRS-based channel estimation performance in the LTE high version (Release 12 and later versions) can be improved.
- the embodiment of the present invention further provides a base station, as described in Embodiment 7 below. Since the principle of solving the problem is similar to the method of Embodiment 3, the specific implementation may refer to the implementation of the method in Embodiment 3. The repetitions are not repeated here.
- the embodiment of the present invention further provides a base station for configuring a demodulation reference signal
- FIG. 17 is a schematic diagram of a composition of the base station.
- the base station includes:
- the configuration unit 171 is configured to configure less than six groups of DMRSs in each physical resource block pair, where each group of DMRSs is composed of two REs carrying DMRSs, and the two REs carrying DMRSs are located in the same subcarrier and occupy two Adjacent OFDM symbols.
- the DMRS corresponding to one or more ports uses the code points to occupy the first, sixth, and eleventh in the frequency domain.
- the configuration unit 171 is specifically configured to: keep the density and position of the four groups of DMRSs in the time domain unchanged, The four sets of DMRS are configured in any two sets of positions in the three groups of frequencies.
- the configuration unit 171 is specifically configured to: keep the density and position of the four groups of DMRSs in the time domain unchanged, The two groups of DMRSs in the four groups of DMRSs are arranged at the position of the middle group of the three groups of positions in the frequency domain; the other two groups of the four groups of DMRSs are respectively arranged in the first group of the three groups of positions in the frequency domain and At the location of the third group, the DMRSs disposed at the locations of the first group and the DMRSs configured at the locations of the third group are located in different time slots of the PRB pair.
- the configuration unit 171 is specifically configured to: keep the density and position of the three sets of DMRSs in the time domain unchanged, The three sets of DMRSs are respectively arranged in three sets of positions in the frequency domain, and the DMRSs disposed at the positions of the first group in the frequency domain and the DMRSs disposed at the positions of the third group in the frequency domain are located in the PRB pair. In the same time slot, the DMRSs disposed at the positions of the second group in the frequency domain and the DMRSs disposed at the positions of the first group and the third group in the frequency domain are located in different time slots of the PRB pair.
- OFDM orthogonal frequency division multiplexing
- the DMRS may also be configured as a pilot pattern with reduced frequency domain density as shown in FIGS. 12A-12D, or a pilot with reduced time domain density as shown in FIGS. 13A-13B. pattern.
- the DMRS-based channel estimation performance in the LTE high version (Release 12 and later versions) can be improved.
- the embodiment of the present invention further provides a base station for performing mapping of a demodulation reference signal
- FIG. 18 is a schematic diagram of a composition of the base station.
- the base station includes:
- the configuration unit 181 is configured to configure a demodulation reference signal of a physical resource block pair of the LTE system according to the configuration method of the demodulation reference signal according to Embodiment 3;
- the mapping unit 182 performs resource mapping on the configured demodulation reference signal according to the following formula:
- the data throughput in the LTE high version (Release 12 and later versions) can be improved.
- the embodiment of the invention further provides a channel estimation method.
- 19 is a flow chart of the method. Referring to FIG. 19, the method includes:
- Step 1901 The UE extracts the DMRS from the received signal according to the location of the DMRS configured in Embodiment 1 or Embodiment 3;
- the DMRS is configured by the base station according to the method of Embodiment 1 and according to Embodiment 2 The method is mapped to the location of the corresponding physical resource block pair.
- the DMRS time base station is configured according to the method of Embodiment 3 and is mapped to the location of the corresponding physical resource block pair according to the method of the existing standard or the method of Embodiment 4.
- the UE can extract its own DMRS at the corresponding location.
- Step 1902 The UE generates a DMRS sequence according to a configuration of the DMRS by the base station.
- the DMRS sequence can be generated by the UE according to the existing standard method, and details are not described herein again.
- Step 1903 The UE performs channel estimation on a channel that the received signal experiences in transmission according to the extracted DMRS and the generated DMRS sequence.
- the UE performs channel estimation on the channel through which the received signal is processed by using the received DMRS and the locally generated DMRS sequence.
- the specific channel estimation method is not limited, and an LS algorithm, an MMSE algorithm, a DFT algorithm, or various interpolation algorithms may be used.
- the performance of channel estimation can be improved.
- the embodiment of the present invention further provides a UE.
- the principle of the UE is similar to that of the ninth embodiment. Therefore, the specific implementation may refer to the implementation of the method in Embodiment 9. The repetitions are not repeated here.
- FIG. 20 is a schematic diagram of the composition of the UE. Referring to FIG. 20, the UE includes:
- An extracting unit 201 which extracts a DMRS from the received signal according to the location of the DMRS configured in Embodiment 1 or Embodiment 3;
- a generating unit 202 which generates a DMRS sequence according to a configuration of the DMRS of the base station
- the channel estimating unit 203 performs channel estimation on the channel experienced by the received signal in the transmission according to the extracted DMRS and the generated DMRS sequence.
- the performance of channel estimation can be improved.
- the embodiment of the present invention further provides a communication system, where the communication system includes the base station described in Embodiment 5-8 and the UE described in Embodiment 10.
- the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a base station, the program causes the computer to execute the configuration method of the demodulation reference signal described in Embodiments 1 and 3 in the base station or The mapping method of the demodulation reference signals described in Embodiments 2 and 4 is performed.
- the embodiment of the invention further provides a storage medium storing a computer readable program, wherein the computer can
- the reading program causes the computer to execute the configuration method of the demodulation reference signals described in Embodiments 1 and 3 or the method of mapping the demodulation reference signals described in Embodiments 2 and 4 in the base station.
- the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a terminal device, the program causes the computer to execute the channel estimation method described in Embodiment 9 in the terminal device.
- the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the channel estimation method described in Embodiment 9 in the terminal device.
- the above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
- the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
- Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like.
- the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
Abstract
Description
Claims
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PCT/CN2013/070202 WO2014107838A1 (zh) | 2013-01-08 | 2013-01-08 | 解调参考信号的配置、映射方法、信道估计方法和装置 |
JP2015551097A JP2016507958A (ja) | 2013-01-08 | 2013-01-08 | 復調用参照信号の構成、マッピング方法、チャネル推定方法及び装置 |
CN201380065918.8A CN104871624A (zh) | 2013-01-08 | 2013-01-08 | 解调参考信号的配置、映射方法、信道估计方法和装置 |
EP13870606.4A EP2945443A4 (en) | 2013-01-08 | 2013-01-08 | DEMODULATION REFERENCE SIGNAL CONFIGURATION AND MAPPING METHOD, CHANNEL ESTIMATION METHOD AND DEVICE |
KR1020157018912A KR20150097637A (ko) | 2013-01-08 | 2013-01-08 | 복조 기준 신호를 구성하기 위한 방법, 복조 기준 신호를 매핑하기 위한 방법, 채널 추정을 수행하기 위한 방법 및 그의 장치 |
US14/790,514 US20150341931A1 (en) | 2013-01-08 | 2015-07-02 | Methods And Apparatus For Configuring Demodulation Reference Signals, Mapping Demodulation Reference Signals Method, And Performing Channel Estimation |
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EP2941080B1 (en) * | 2013-01-25 | 2018-04-25 | Huawei Technologies Co., Ltd. | Transmission of demodulation reference signals in a new carrier type |
CN104125186B (zh) * | 2013-04-28 | 2019-08-30 | 中兴通讯股份有限公司 | 一种解调参考信号图样信息的选取方法、系统及装置 |
US10547427B2 (en) * | 2015-12-24 | 2020-01-28 | Lg Electronics Inc. | Method for transmitting demodulation reference signal in wireless communication system that supports narrow band IoT and apparatus for supporting the same |
CN106922024B (zh) * | 2015-12-28 | 2021-12-10 | 夏普株式会社 | 解调参考信令的资源配置方法、基站和用户设备 |
CN108282877B (zh) * | 2017-01-06 | 2023-12-01 | 华为技术有限公司 | 一种参考信号的配置方法、装置及系统 |
CN108111266B (zh) * | 2017-05-05 | 2022-08-19 | 中兴通讯股份有限公司 | 解调参考信号的配置方法、通信装置及通信节点 |
CN108934074B (zh) * | 2017-05-27 | 2022-04-08 | 中国移动通信有限公司研究院 | 一种下行控制信道的配置方法、装置和基站 |
CN109150461B (zh) * | 2017-06-16 | 2023-03-24 | 华为技术有限公司 | 一种发送解调参考信号的方法和装置、解调方法和装置 |
EP3668030A4 (en) * | 2017-08-10 | 2020-07-22 | Mitsubishi Electric Corporation | TRANSFER DEVICE |
CN110351857B (zh) | 2018-01-12 | 2020-06-19 | 华为技术有限公司 | 资源指示方法、终端设备和网络设备 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101902301A (zh) * | 2010-08-12 | 2010-12-01 | 中兴通讯股份有限公司 | 上行控制信令发送、上行解调参考信号的承载方法及装置 |
CN102271109A (zh) * | 2010-06-07 | 2011-12-07 | 中兴通讯股份有限公司 | 一种解调参考符号的映射方法及系统 |
WO2013002544A2 (ko) * | 2011-06-27 | 2013-01-03 | 엘지전자 주식회사 | 무선 통신 시스템에서 하향링크 제어 채널 할당 방법 및 장치 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8885541B2 (en) * | 2009-08-04 | 2014-11-11 | Qualcomm Incorporated | Extension of UE-RS to DWPTS |
CN102123013B (zh) * | 2010-01-08 | 2015-06-03 | 中兴通讯股份有限公司 | 一种解调参考符号的映射方法和装置 |
-
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102271109A (zh) * | 2010-06-07 | 2011-12-07 | 中兴通讯股份有限公司 | 一种解调参考符号的映射方法及系统 |
CN101902301A (zh) * | 2010-08-12 | 2010-12-01 | 中兴通讯股份有限公司 | 上行控制信令发送、上行解调参考信号的承载方法及装置 |
WO2013002544A2 (ko) * | 2011-06-27 | 2013-01-03 | 엘지전자 주식회사 | 무선 통신 시스템에서 하향링크 제어 채널 할당 방법 및 장치 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109150447A (zh) * | 2017-06-16 | 2019-01-04 | 中兴通讯股份有限公司 | 信息发送、数据解调方法及装置、通信节点、网络侧设备 |
CN109150447B (zh) * | 2017-06-16 | 2022-09-27 | 中兴通讯股份有限公司 | 信息发送、数据解调方法及装置、通信节点、网络侧设备 |
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