WO2018219257A1 - 一种通信的方法及装置 - Google Patents
一种通信的方法及装置 Download PDFInfo
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- WO2018219257A1 WO2018219257A1 PCT/CN2018/088769 CN2018088769W WO2018219257A1 WO 2018219257 A1 WO2018219257 A1 WO 2018219257A1 CN 2018088769 W CN2018088769 W CN 2018088769W WO 2018219257 A1 WO2018219257 A1 WO 2018219257A1
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- 238000000034 method Methods 0.000 title claims abstract description 127
- 238000004891 communication Methods 0.000 title abstract description 35
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- 238000012545 processing Methods 0.000 claims description 40
- 108010076504 Protein Sorting Signals Proteins 0.000 claims description 19
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- 238000010586 diagram Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 12
- 230000011664 signaling Effects 0.000 description 6
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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
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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
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
- H04L5/0094—Indication of how sub-channels of the path are allocated
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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
- H04L5/02—Channels characterised by the type of signal
- H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
- H04L5/10—Channels characterised by the type of signal the signals being represented by different frequencies with dynamo-electric generation of carriers; with mechanical filters or demodulators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/005—Transmission of information for alerting of incoming communication
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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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0093—Point-to-multipoint
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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 relates to the field of communications technologies, and in particular, to a communication method and apparatus.
- NR New Radio
- Beamforming technology can limit the energy of the transmitted signal to a certain beam direction, thereby increasing the efficiency of signal transmission and reception. Beamforming technology can effectively expand the transmission range of wireless signals and reduce signal interference, thereby achieving higher communication efficiency and higher network capacity.
- beamforming technology will result in beam scanning for the transmission of broadcast signals. The channel of different beam signals is inconsistent after beam scanning. Therefore, each broadcast signal channel needs to carry its own demodulation reference signal (Demodulation Reference Signal, DMRS). ).
- DMRS demodulation Reference Signal
- the channel of the broadcast signal is usually performed by using the CRS as the DMRS. Demodulation of the signal.
- the period of the CRS may be inconsistent with the period of the broadcast signal. Therefore, in the LTE system, the method of using the CRS as the DMRS of the broadcast signal channel may exist that some broadcast signal channels have no DMRS, and thus the broadcast signals cannot be used. The channel is demodulated or the terminal device cannot access the base station.
- Embodiments of the present application provide a method and apparatus for communication, and in particular, a DMRS of a new broadcast signal channel, which can be applied to an NR.
- a method for generating a demodulation reference signal sequence comprising: generating a demodulation reference signal DMRS sequence of a broadcast signal according to a pseudo-random sequence c(m); wherein the DMRS sequence and a resource block of the broadcast signal
- the number of RBs N RB is related to the number n RE of resource elements RE occupied by the DMRS sequence in one RB; the DMRS sequence is mapped into one or more symbols.
- the DMRS sequence of the broadcast signal is generated according to the pseudo random sequence c(m), and the DMRS sequence is mapped into one or more symbols, thereby generating a dedicated DMRS sequence for the broadcast signal, and the DMRS is generated.
- the sequence is sent to the terminal device, which in turn enables the terminal device to correctly demodulate the broadcast signal and enable the terminal device to quickly access the base station.
- the broadcast signal is paging information, a physical broadcast channel PBCH, or system information.
- the demodulation reference signal DMRS sequence of the broadcast signal is generated according to the pseudo random sequence c(m), including: generating according to the pseudo random sequence c(m) by using the formula (1) a DMRS sequence of a broadcast signal; where l represents an index value of a symbol on a time slot, r l (m) represents a DMRS sequence, and m represents a sequence index value of a DMRS sequence,
- n RE is a value of 3 or 4.
- the initialization c init of the pseudo random sequence c(m) is the following formula (1-1a)-(1-1b) Any one of the initializations shown, initializing c init for generating a pseudo-random sequence c(m);
- N ID represents the physical cell identity of the cell Or the identity of a region composed of multiple cells
- k 1 and k 2 are constants from 0 to 64
- n RNTI represents the wireless network temporary identification value
- n SS represents the index value of the synchronization signal block in a synchronization signal segment set
- m 2 represents the paging information or system.
- l 2 represents the index value of the symbol in the RB of the paging information or system information.
- mapping the DMRS sequence to one or more symbols includes: mapping the DMRS sequence to the resource block RB of the broadcast signal according to formula (2) Resource unit RE,
- a k,l represents the position of the RE occupied by the sequence code included in the DMRS sequence in the RB
- k represents the frequency index value on the symbol
- l represents the symbol index value on one slot or the symbol on the RB of the broadcast signal.
- the index value, n represents an index value of a scheduling resource unit of the broadcast signal
- m represents a sequence index value of the DMRS sequence.
- the values of k, l, and m are specifically as in formula (2-1a).
- n density represents the density used to transmit the DMRS sequence in the RB
- v shift represents the first frequency offset value of the starting RE position of the DMRS sequence with respect to the RE of the minimum frequency
- v represents the relative RE position of the DMRS sequence relative to The second frequency offset value of the RE of the minimum frequency
- the range of l 1 and l 2 is 0, 1, 2, ..., N symbol
- N symbol represents the number of symbols or paging information in a time slot or The number of symbols on the RB of the system information, Indicates the cell physical identity of the cell, and mod indicates the remainder.
- the DMRS sequence of the broadcast signal can be mapped in the RE included in the RB of the broadcast signal in the most efficient manner, thereby reducing the transmission occupied by the DMRS sequence while the broadcast signal is correctly demodulated. Resources.
- a method for generating a demodulation reference signal sequence comprising: receiving a first demodulation reference signal DMRS sequence of a broadcast signal from a base station; and generating a second DMRS sequence according to the pseudo-random sequence c(m);
- the second DMRS sequence is related to the number N RB of the resource block RB of the broadcast signal and the number n RE of the resource unit RE occupied by the DMRS sequence in one RB; if the second DMRS sequence matches the first DMRS sequence, the The second DMRS demodulates the data of the broadcast signal.
- the broadcast signal is paging information, a physical broadcast channel PBCH, or system information.
- generating the demodulation reference signal DMRS sequence according to the pseudo random sequence c(m) includes: generating the second DMRS by using the formula (1) according to the pseudo random sequence c(m) In the sequence, where r l (m) represents a second DMRS sequence, m represents a sequence index value of a second DMRS sequence, l represents an index value of a symbol on a time slot, r l (m) represents a DMRS sequence, and m represents Sequence index value of the DMRS sequence;
- n RE is 3 or 4.
- the N RB is obtained by using a physical downlink control channel PDCCH, or a physical broadcast channel PBCH, or an RMSI.
- the initialization c init of the pseudo random sequence c(m) is the following formula (1-1a)-(1-1b) Any of the initializations shown, initializing c init for generating a pseudo-random sequence c(m);
- N ID represents the physical cell identity of the cell Or the identity of a region composed of multiple cells
- k 1 and k 2 are constants from 0 to 64
- n RNTI represents the wireless network temporary identification value
- n SS represents the index value of the synchronization signal block in a synchronization signal segment set
- m 2 represents the paging information or system.
- l 2 represents the index value of the symbol in the RB of the paging information or system information.
- a method for mapping a demodulation reference signal sequence comprising: generating a demodulation reference signal DMRS sequence of a broadcast signal; and mapping the DMRS sequence to a resource included in a resource block RB of the broadcast signal according to formula (2) Unit RE,
- a k,l represents the position of the RE occupied by the sequence code included in the DMRS sequence
- k represents the frequency index value on the symbol
- l represents the symbol index value on one slot or the RB of the broadcast signal.
- the symbol index value, n represents the index value of the scheduling resource unit of the broadcast signal
- m represents the sequence index value of the DMRS sequence.
- the broadcast signal is paging information or system information.
- the DMRS sequence is obtained by using formula (1); wherein r l (m) represents the DMRS sequence, c (m) represents a pseudo-random sequence, and n RE represents The number of resource units RE occupied by the DMRS sequence, N RB represents the number of resource blocks RB of the broadcast signal, and n RE is greater than or equal to 1, and the l represents an index value of a symbol on one time slot;
- the values of k, l, and m are specifically as in formula (2-1a).
- n density represents the density used to transmit the DMRS sequence in the RB
- v shift represents the first frequency offset value of the starting RE position of the DMRS sequence with respect to the RE of the minimum frequency
- v represents the relative RE position of the DMRS sequence relative to The second frequency offset value of the RE of the minimum frequency
- the range of l 1 and l 2 is 0, 1, 2, ..., N symbol
- N symbol represents the number of symbols or paging information in a time slot or The number of symbols on the RB of the system information, Indicates the cell physical identity of the cell, and mod indicates the remainder.
- the K value of the RB and RE for transmission density n density and RB for transmitting the DMRS sequence DMRS sequence with respect to the frequency offset value of the minimum frequency RE is any one shown in the following table:
- NA empty
- a fourth aspect provides a method for acquiring a demodulation reference signal sequence, the method comprising: receiving a demodulation reference signal DMRS sequence sent by a base station through a resource block RB of a broadcast signal; determining, according to formula (2), a DMRS sequence in a broadcast signal a location in the resource unit RE included in the RB; acquiring a DMRS sequence from the RB of the broadcast signal according to the location of the DMRS sequence;
- a k,l represents the position of the RE occupied by the sequence code included in the DMRS sequence in the RB
- k represents the frequency index value on the symbol
- l represents the symbol index value on one slot or the symbol on the RB of the broadcast signal.
- the index value, n represents an index value of a scheduling resource unit of the broadcast signal
- m represents a sequence index value of the DMRS sequence.
- the broadcast signal is paging information or system information.
- the DMRS sequence is obtained by the base station by using formula (1); where r l (m) represents the DMRS sequence, and c (m) represents a pseudo random sequence.
- n RE represents the number of resource units RE occupied by the DMRS sequence
- N RB represents the number of resource blocks RB of the broadcast signal
- n RE is greater than or equal to 1
- the l represents an index value of a symbol on one slot;
- the values of k, l, and m are specifically as in formula (2-1a).
- n density represents the density of the DMRS sequence used for transmission in the RB, specifically the number of intervals RE of two adjacent REs used to transmit the DMRS sequence in frequency
- v shift indicates that the starting RE position of the DMRS sequence is relative
- the first frequency offset value of the RE of the minimum frequency, the offset unit is the number
- the value of v shift is an integer between 0 and 11
- the v represents the starting RE position of the DMRS sequence with respect to the minimum frequency.
- the values of 1 and l 2 are 0, 1, 2, ..., N symbol , N symbol represents the number of symbols in a time slot or the number of symbols on the RB of paging information or system information; Indicates the cell physical identity of the cell; mod indicates the remainder.
- the value of k is different from the density n density used to transmit the DMRS sequence in the RB and the RE used to transmit the DMRS sequence in the RB with respect to the RE of the minimum frequency.
- the specific relationship of the frequency offset value v shift +v is any one shown in the following table:
- the DMRS sequence of the broadcast signal may be mapped in the RE included in the RB of the broadcast signal in the most efficient manner, thereby reducing the transmission resource occupied by the DMRS sequence while the broadcast signal is correctly demodulated.
- an apparatus comprising: a processing unit, configured to generate a demodulation reference signal DMRS sequence of a broadcast signal according to a pseudo-random sequence c(m); wherein the DMRS sequence and the resource block RB of the broadcast signal
- the number N RB is related to the number of RE REs occupied by the DMRS sequence in one RB
- the processing unit is further configured to map the DMRS sequence on one or more symbols.
- the broadcast signal is paging information, a physical broadcast channel PBCH, or system information.
- the processing unit is specifically configured to: generate, according to the pseudo-random sequence c(m), a DMRS sequence of the broadcast signal by using the formula (1); where l represents a time slot The index value of the symbol, r l (m) represents the DMRS sequence, and m represents the sequence index value of the DMRS sequence.
- n RE takes a value of 3 or 4.
- the initialization c init of the pseudo random sequence c(m) is the following formula (1-1a)-(1-1b) Any one of the initializations shown, initializing c init for generating the pseudo-random sequence c(m);
- N ID represents the physical cell identity of the cell Or the identity of a region composed of multiple cells
- k 1 and k 2 are constants from 0 to 64
- n RNTI represents the wireless network temporary identification value
- n SS represents the index value of the synchronization signal block in a synchronization signal segment set
- m 2 represents the paging information or system.
- l 2 represents the index value of the symbol in the RB of the paging information or system information.
- the processing unit is specifically configured to: map, according to formula (2), the DMRS sequence in a resource unit RE included in the resource block RB of the broadcast signal,
- a k,l represents the position of the RE occupied by the sequence code included in the DMRS sequence in the RB
- k represents the frequency index value on the symbol
- l represents the symbol index value on one slot or the symbol on the RB of the broadcast signal.
- the index value, n represents an index value of a scheduling resource unit of the broadcast signal
- m represents a sequence index value of the DMRS sequence.
- the values of k, l, and m are specifically as in formula (2-1a).
- n density represents the density used to transmit the DMRS sequence in the RB
- v shift represents the frequency offset value of the starting RE position of the DMRS sequence with respect to the RE of the minimum frequency
- v represents the starting RE position of the DMRS sequence with respect to the minimum Frequency offset value of the frequency of the RE
- l 1 and l 2 have a value range of 0, 1, 2, ..., N symbol
- N symbol represents the number of symbols on a time slot or RB of paging information or system information The number of symbols on the Indicates the cell physical identity of the cell, and mod indicates the remainder.
- the apparatus is a chip on a base station or a base station.
- an apparatus comprising: a receiving unit, a first demodulation reference signal DMRS sequence for receiving a broadcast signal from a base station; and a processing unit, configured to generate a first according to the pseudo-random sequence c(m) a second DMRS sequence; wherein, the second DMRS sequence is related to the number N RB of the resource block RBs of the broadcast signal and the number n RE of the resource units RE occupied by the DMRS sequence in one RB; the processing unit is further configured to: if the second DMRS sequence and When the first DMRS sequence match satisfies the requirement, the data of the broadcast signal is demodulated according to the second DMRS.
- the broadcast signal is paging information, a physical broadcast channel PBCH, or system information.
- the processing unit is specifically configured to: generate, according to the pseudo-random sequence c(m), a DMRS sequence by using the formula (1); where r l (m) represents a DMRS sequence, where a sequence index value indicating a DMRS sequence, and l an index value of a symbol on a time slot;
- n RE is a value of 3 or 4.
- the receiving unit is further configured to acquire the N RB by using a physical downlink control channel PDCCH, or a physical broadcast channel PBCH, or an RMSI.
- the initialization c init of the pseudo random sequence c(m) is the following formula (1-1a)-(1-1b) Any of the initializations shown, initializing c init for generating a pseudo-random sequence c(m);
- N ID represents the physical cell identity of the cell Or the identity of a region composed of multiple cells
- k 1 and k 2 are constants from 0 to 64
- n RNTI represents the wireless network temporary identification value
- n SS represents the index value of the synchronization signal block in a synchronization signal segment set
- m 2 represents the paging information or system.
- l 2 represents the index value of the symbol in the RB of the paging information or system information.
- the device is a chip on a terminal device or a terminal device.
- an apparatus comprising: a processing unit, a demodulation reference signal DMRS sequence for generating a broadcast signal; and a processing unit, further configured to map the DMRS sequence to a resource of the broadcast signal according to formula (2) In the resource unit RE included in the block RB,
- a k,l represents the position of the RE occupied by the sequence code included in the DMRS sequence in the RB
- k represents the frequency index value on the symbol
- l represents the symbol index value on one slot or the symbol on the RB of the broadcast signal.
- the index value, n represents an index value of a scheduling resource unit of the broadcast signal
- m represents a sequence index value of the DMRS sequence.
- the broadcast signal is paging information or system information.
- the DMRS sequence is obtained by using formula (1); where r l (m) represents a DMRS sequence, c (m) represents a pseudo random sequence, and n RE represents a DMRS sequence occupied.
- the values of k, l, and m are specifically as in formula (2-1a).
- n density represents the density used to transmit the DMRS sequence in the RB
- v shift represents the frequency offset value of the starting RE position of the DMRS sequence with respect to the RE of the minimum frequency
- v represents the starting RE position of the DMRS sequence with respect to the minimum Frequency offset value of the frequency of the RE
- l 1 and l 2 have a value range of 0, 1, 2, ..., N symbol
- N symbol represents the number of symbols on a time slot or RB of paging information or system information The number of symbols on the Indicates the cell physical identity of the cell, and mod indicates the remainder.
- the K value for the RB RE n density and the density of the DMRS sequence RB transmission for transmitting the DMRS sequence with respect to the frequency offset value of the minimum frequency RE is any one shown in the following table:
- NA empty
- the device is a chip inside a base station or a base station.
- an apparatus comprising: a receiving unit, configured to receive a demodulation reference signal DMRS sequence sent by a base station by a resource block RB of a broadcast signal; and a processing unit, configured to determine a DMRS sequence according to formula (2) a location in the resource unit RE included in the RB of the broadcast signal; the processing unit is further configured to: acquire the DMRS sequence from the RB of the broadcast signal according to the location of the DMRS sequence;
- a k,l represents a position of an RE occupied by the sequence code included in the DMRS sequence in the RB, the k represents a frequency index value on a symbol, and the l represents a symbol on a time slot An index value or a symbol index value on an RB of the broadcast signal, the n indicating an index value of a scheduling resource unit of the broadcast signal, and the m indicating a sequence index value of the DMRS sequence.
- the broadcast signal is paging information or system information.
- the DMRS sequence is obtained by the base station by using formula (1); where r l (m) represents a DMRS sequence, c (m) represents a pseudo-random sequence, and n RE represents The number of resource units RE occupied by the DMRS sequence, N RB represents the number of resource blocks RB of the broadcast signal, n RE is greater than or equal to 1, and l represents an index value of a symbol on one slot;
- the values of k, l, and m are specifically as in formula (2-1a).
- n density represents the density of the DMRS sequence used for transmission in the RB
- v shift represents the first frequency offset value of the starting RE position of the DMRS sequence with respect to the RE of the minimum frequency
- v represents the start of the DMRS sequence a second frequency offset value of the RE of the initial RE position relative to the minimum frequency
- l 1 and l 2 have a value range of 0, 1, 2, ..., N symbol
- N symbol represents the number of symbols on a time slot or The number of symbols on the RB of the paging information or system information, Indicates the cell physical identity of the cell, and mod indicates the remainder.
- the broadcast signal is paging information or system information.
- the DMRS sequence is obtained by using formula (1); where r l (m) represents a DMRS sequence, c (m) represents a pseudo random sequence, and n RE represents a DMRS sequence occupied.
- the values of k, l, and m are specifically as in formula (2-1a).
- n density represents the density used to transmit the DMRS sequence in the RB
- v shift represents the frequency offset value of the starting RE position of the DMRS sequence with respect to the RE of the minimum frequency
- v represents the starting RE position of the DMRS sequence with respect to the minimum Frequency offset value of the frequency of the RE
- l 1 and l 2 have a value range of 0, 1, 2, ..., N symbol
- N symbol represents the number of symbols on a time slot or RB of paging information or system information The number of symbols on the Indicates the cell physical identity of the cell, and mod indicates the remainder.
- NA empty
- the device is a chip inside a base station or a base station.
- an apparatus comprising: a receiving unit, configured to receive a demodulation reference signal DMRS sequence sent by a base station by a resource block RB of a broadcast signal; and a processing unit, configured to determine a DMRS sequence according to formula (2) a location in the resource unit RE included in the RB of the broadcast signal; the processing unit is further configured to: acquire the DMRS sequence from the RB of the broadcast signal according to the location of the DMRS sequence;
- a k,l represents a position of an RE occupied by the sequence code included in the DMRS sequence in the RB, the k represents a frequency index value on a symbol, and the l represents a symbol on a time slot An index value or a symbol index value on an RB of the broadcast signal, the n indicating an index value of a scheduling resource unit of the broadcast signal, and the m indicating a sequence index value of the DMRS sequence.
- the broadcast signal is paging information or system information.
- the DMRS sequence is obtained by the base station by using a formula (1); where r l (m) represents a DMRS sequence, c (m) represents a pseudo random sequence, and n RE represents The number of resource units RE occupied by the DMRS sequence, N RB represents the number of resource blocks RB of the broadcast signal, n RE is greater than or equal to 1, and l represents an index value of a symbol on one slot;
- the values of k, l, and m are specifically as in formula (2-1a).
- n density represents the density of the DMRS sequence used for transmission in the RB
- v shift represents the first frequency offset value of the starting RE position of the DMRS sequence with respect to the RE of the minimum frequency
- v represents the start of the DMRS sequence a second frequency offset value of the RE of the initial RE position relative to the minimum frequency
- l 1 and l 2 have a value range of 0, 1, 2, ..., N symbol
- N symbol represents the number of symbols on a time slot or The number of symbols on the RB of the paging information or system information, Indicates the cell physical identity of the cell, and mod indicates the remainder.
- an information indication method includes: the base station generates at least one sequence, at least one sequence is a DMRS sequence of a PBCH, and each sequence in the at least one sequence corresponds to a specified information, and the information is specified below.
- the RMS identifier Any one of the following: the RMS identifier, the scheduling information set of the downlink control channel, the CORESET information, the frequency resource information of the PDSCH, the FDD/TDD identifier, the extended cell identifier, the area identifier, the TRS configuration information, the synchronization signal block index, and the base station to the terminal
- the device transmits a target sequence, the target sequence is a sequence in at least one sequence, and the target sequence is used to indicate to the terminal device the specified information corresponding to the target sequence.
- an information indication method includes: receiving, by a terminal device, a target sequence sent by a base station, where the target sequence is a sequence in at least one sequence; wherein at least one sequence is a DMRS sequence of the PBCH, at least one Each sequence in the sequence corresponds to a specified information, and the specified information is any one of the following information: a valid value identifier, a scheduling information set of a downlink control channel, a CORESET information, a frequency resource information of a PDSCH, an FDD/TDD identifier, an extended cell identifier, The area identifier, the TRS configuration information, and the synchronization signal block index; the terminal device determines the specified information corresponding to the target sequence according to the target sequence.
- a base station includes: a processing unit, configured to generate at least one sequence, at least one sequence is a DMRS sequence of a PBCH, and each sequence in at least one sequence corresponds to a specified information, specifying information Any one of the following information: a valid value identifier, a scheduling information set of a downlink control channel, CORESET information, a frequency resource information of a PDSCH, an FDD/TDD identifier, an extended cell identifier, an area identifier, a TRS configuration information, a synchronization signal block index, and a transmission And a unit, configured to send, to the terminal device, the target sequence, where the target sequence is a sequence in the at least one sequence, the target sequence is used to indicate, to the terminal device, the specified information corresponding to the target sequence.
- a processing unit configured to generate at least one sequence, at least one sequence is a DMRS sequence of a PBCH, and each sequence in at least one sequence corresponds to a specified information, specifying information Any one of
- a further aspect of the present application provides a terminal device, comprising: a receiving unit, configured to receive a target sequence sent by a base station, where the target sequence is a sequence in at least one sequence; wherein at least one sequence is a DMRS sequence of the PBCH
- Each of the at least one sequence corresponds to one specified information, and the specified information is any one of the following information: a valid value identifier, a scheduling information set of the downlink control channel, a CORESET information, a frequency resource information of the PDSCH, an FDD/TDD identifier, and an extension.
- the base station may indicate any one of the following information to the terminal device by using a DMRS sequence of different PBCHs or a sequence of different PSS sequences or SSSs: whether the base station allows the terminal device to camp, and whether the base station reads the RMSI information. Value, partial frame number of SFN or H-SFN, system bandwidth RMS identifier, scheduling information set of downlink control channel CORESET information, frequency resource information of PDSCH, FDD/TDD identifier, extended cell identifier, area identifier, TRS configuration information Synchronizing the signal block index, thereby saving signaling interaction between the base station and the terminal device, thereby reducing overhead and detection complexity of the terminal device.
- the base station may also indicate the above information through different positions of the DMRS sequence of the PBCH, or different frequency positions of the PSS sequence or the sequence of the SSS, and also save signaling interaction between the base station and the terminal device, and reduce overhead and detection of the terminal device. the complexity.
- an apparatus comprising a processor, a memory, a communication interface, and a bus, the memory and the data are stored, the processor, the memory, and the communication interface are connected by a bus, and the processor runs the code in the memory
- the apparatus for causing the apparatus to perform the demodulation reference signal sequence generation method provided by any one of the first aspect or the first aspect of the first aspect, or the third aspect or any possible implementation of the third aspect Demodulation reference signal sequence mapping method.
- an apparatus comprising a processor, a memory, a communication interface, and a bus, the memory and the data are stored, the processor, the memory, and the communication interface are connected by a bus, and the processor runs the code in the memory
- a further aspect of the present application provides a system, the system comprising a base station and a terminal device, wherein the base station is the device provided by any of the possible implementation manners of the fifth aspect or the fifth aspect, or the seventh
- the apparatus provided by any one of the possible implementations of the seventh aspect; and/or the apparatus provided by the terminal apparatus of any of the possible implementations of the sixth aspect or the sixth aspect, or An apparatus provided by any of the eight aspects or any of the possible implementations of the eighth aspect.
- Yet another aspect of the present application provides a computer readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform the methods provided by the various aspects described above.
- Yet another aspect of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods provided by the various aspects described above.
- FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application.
- FIG. 2 is a schematic structural diagram of a base station according to an embodiment of the present disclosure
- FIG. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
- FIG. 4 is a flowchart of a method for generating a demodulation reference signal sequence according to an embodiment of the present application
- FIG. 5 is a schematic diagram of a demodulation reference signal distribution according to an embodiment of the present disclosure.
- FIG. 6 is a schematic diagram of another demodulation reference signal distribution according to an embodiment of the present disclosure.
- FIG. 7 is a schematic diagram of still another demodulation reference signal distribution according to an embodiment of the present application.
- FIG. 8 is a flowchart of a method for indicating a demodulation reference signal sequence according to an embodiment of the present disclosure
- FIG. 9 is a schematic diagram of a DMRS sequence combination according to an embodiment of the present application.
- FIG. 10 is a schematic structural diagram of a device according to an embodiment of the present disclosure.
- FIG. 11 is a schematic structural diagram of another apparatus according to an embodiment of the present disclosure.
- FIG. 12 is a schematic structural diagram of a device according to an embodiment of the present disclosure.
- FIG. 13 is a schematic structural diagram of another apparatus according to an embodiment of the present application.
- System frame A wireless transmission frame.
- the length of the system frame can be 10 milliseconds, and the duration of one subframe is 1 ms.
- the number of slots included in one subframe is related to the subcarrier spacing.
- the number of consecutive symbols of a time slot can be 7 symbols or 14 symbols.
- the index value of the symbol is used to identify different symbols. For example, when the number of consecutive symbols of a time slot is 7 symbols, the index value of the corresponding symbol may be 0-6.
- Synchronization Signal refers to a signal used to provide the same time reference.
- the synchronization signal may include a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS).
- PSS Primary Synchronization Signal
- SSS Secondary Synchronization Signal
- the primary synchronization signal is used to indicate an ID in a physical cell group, and the secondary synchronization signal indicates a physical cell group number.
- Synchronization signal block may include one PSS OFDM symbol, one SSS OFDM symbol, and two or more PBCH OFDM symbols.
- the OFDM symbols may be referred to as symbols, and the positions of the PSS symbols, SSS symbols, and PBCH symbols in the sync signal block have a fixed time domain distribution relationship and are adjacent.
- a plurality of sync signal blocks constitute a sync signal segment (SS burst), and a plurality of sync signal segments constitute a SS burst set.
- the communication system includes a base station 101 and a terminal device 102.
- the base station 101 has a scheduling function of a shared channel, and has a function of establishing a scheduling based on a history of packet data transmitted to the terminal device 102.
- scheduling when a plurality of terminal devices 102 share transmission resources, a mechanism is needed to effectively allocate. Physical layer resources to obtain statistical multiplexing gain.
- the terminal device 102 has a function of transmitting and receiving data through a communication channel established with the base station 101.
- the terminal device 102 performs transmission or reception processing of the shared channel based on the information transmitted through the scheduling control channel.
- the terminal device 102 may be a mobile station, a mobile terminal, a user equipment, a telephone, a home appliance, a car, a mobile phone, a tablet computer, a computer, a portable terminal, or the like, and the types of the terminal devices 102 may be the same or different.
- the base station 101 and the terminal device 102 perform data reception and transmission through a communication channel, which may be a wireless communication channel, and in the wireless communication channel, at least a shared channel and a scheduling control channel exist, and the shared channel is for transmitting and receiving.
- the packet is shared among the plurality of terminal devices 102, and the scheduling control channel is used to transmit the allocation of the shared channel, the corresponding scheduling result, and the like.
- the base station includes a baseband subsystem, a medium-frequency subsystem, an antenna feeder subsystem, and some supporting structures (for example, a whole subsystem).
- the baseband subsystem is used to implement operation and maintenance of the entire base station, implement signaling processing, radio resource principle, transmission interface to the packet core network, implement physical layer, medium access control layer, L3 signaling, operation and maintenance master control Function;
- the middle RF subsystem realizes conversion between the baseband signal, the intermediate frequency signal and the radio frequency signal, realizes demodulation of the LTE wireless received signal, and modulation and power amplification of the transmitted signal;
- the antenna feeder subsystem includes an antenna connected to the base station radio frequency module and The feeder and the antenna and feeder of the GRS receiving card are used to realize the receiving and transmitting of the wireless air interface signal;
- the whole subsystem is a supporting part of the baseband subsystem and the intermediate frequency subsystem, and provides structural, power supply and environmental monitoring functions.
- FIG. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present application, where the terminal device may be a mobile phone, a tablet computer, a notebook computer, a mobile device, a mobile station, a mobile unit, an M2M terminal, and a wireless device. Units, remote units, user agents, mobile clients, and more.
- the terminal device includes: a memory, a processor, a radio frequency (RF) circuit, and a power source.
- RF radio frequency
- the memory can be used to store software programs and modules, and the processor executes various functional applications and data processing of the terminal devices by running software programs and modules stored in the memory.
- the memory may mainly include a storage program area and an storage data area, wherein the storage program area may store an operating system, an application required for at least one function, and the like; the storage data area may store data created according to usage of the terminal device, and the like.
- the memory may include a high speed random access memory, and may also include a nonvolatile memory or the like.
- the processor is a control center of the terminal device, and connects various parts of the entire terminal device by using various interfaces and lines, and executes the terminal by running or executing software programs and/or modules stored in the memory, and calling data stored in the memory.
- the various functions of the device and the processing of the data thereby overall monitoring of the terminal device.
- the processor may include one or more processing units; preferably, the processor may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, etc., and modulates
- the demodulation processor primarily handles wireless communications.
- Radio frequency (RF) circuits can be used to send and receive information and receive and transmit signals during a call.
- RF circuits include, but are not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
- the RF circuit can communicate with the network and other devices through wireless communication.
- the wireless communication can use any communication standard or protocol, including but not limited to global mobile communication systems, general packet radio services, code division multiple access, wideband code division multiple access, long term evolution, email, short message service, and the like.
- the terminal device also includes a power supply for supplying power to the various components.
- the power source can be logically connected to the processor through the power management system to manage functions such as charging, discharging, and power management through the power management system.
- the terminal device may further include an input unit, a display unit, a sensor module, an audio module, a WiFi module, a Bluetooth module, and the like, and details are not described herein again.
- FIG. 4 is a flowchart of a method for generating a demodulation reference signal sequence according to an embodiment of the present application. Referring to FIG. 4, the method includes the following steps.
- Step 201 Generate a demodulation reference signal DMRS sequence of the broadcast signal according to the pseudo random sequence c(m).
- the DMRS sequence is related to the number N RB of resource blocks RB of the broadcast signal and the number n RE of resource units RE occupied by the DMRS sequence in one RB.
- the pseudo-random sequence c(m) may be a golden sequence, a ZC sequence, or an m-sequence, etc., and the pseudo-random sequence c(m) may be used to generate a DMRS sequence.
- the broadcast signal may be paging information, a Physical Broadcast Channel (PBCH), or system information.
- PBCH Physical Broadcast Channel
- the DMRS sequence can be used for a physical downlink control channel and a physical downlink shared channel of a broadcast signal.
- the broadcast signals may have a common antenna port number, ie, paging information, physical broadcast information, and system information having a common DMRS design.
- the value of the number of resource blocks RB of the broadcast signal N RB is related to the bandwidth scanned by the base station, and the terminal device can determine the N RB through the PDCCH, or the PBCH, or the RMSI.
- the number of REs occupied by the DMRS sequence in an RB, n RE may refer to the number of REs used to transmit the DMRS sequence on one symbol in one RB, or may be used to transmit the DMRS sequence in one RB.
- the DMRS sequence of the broadcast signal can be generated by the formula (1) according to the pseudo-random sequence c(m).
- m represents the sequence code index value of the DMRS sequence
- l represents the index value of the symbol on one time slot. For example, when 7 symbols are included in one time slot, the value of l may be an integer between 0 and 6. .
- the number of n-resource element RE, RE is one RB occupied by the DMRS sequence value can be 3 or 4, i.e., one with a symbol of RB
- the number of REs transmitting the DMRS sequence may be 3 or 4, or the total number of REs used to transmit the DMRS sequence in one RB may be 3 or 4.
- Step 202 Map the DMRS sequence on one or more symbols.
- steps 201 and 202 may be performed by a base station, or may be performed by a chip on a base station device, and a base station is taken as an example in FIG. 4 .
- the one or more symbols may be one or more symbols included in the RB of the broadcast signal.
- the base station may map the DMRS sequence on one or more symbols included in the RB of the broadcast signal.
- the base station maps the DMRS sequence of the broadcast signal in the resource unit RE included in the resource block RB of the broadcast signal according to formula (2).
- a k,l denotes the position of the RE occupied by the sequence code included in the DMRS sequence in the RB of the broadcast signal; k denotes the frequency index value on the symbol; l denotes the symbol index value on one slot or the RB of the broadcast signal The symbol index value on the upper; n represents the index value of the scheduling resource unit of the broadcast signal; m represents the sequence index value of the DMRS sequence, and r l (m) is used to represent the DMRS sequence.
- n density represents the density of the DMRS sequence used for transmitting the paging information or the system information, specifically the number of intervals RE of the two adjacent REs for transmitting the DMRS sequence in frequency
- v shift indicates the DMRS
- the initial RE position of the sequence is relative to the first frequency offset value of the RE of the minimum frequency, the offset unit is the number, the value of v shift is an integer between 0 and 11, and v represents the starting RE position of the DMRS sequence.
- the value of N symbol may be an integer from 1 to 14; Indicates the cell physical identity of the cell, and mod indicates the remainder.
- the values of k, l, and m in the above formula (2) may be specifically expressed in the form of a table.
- the specific relationship of v is shown in Table 1 below.
- NA in Table 2 above does not exist, for example, when If it is 1, it means that the DMRS sequence only occupies one symbol, then only the first symbol exists, there is no other second to fourth symbols, and there is no corresponding v to the second to fourth symbols. value.
- Table 2 above Indicates that it is rounded down, Table 2 The values are 1, 2, 3, and 4, respectively, and the values of v on different symbols shown in Table 2 are The relationship does not constitute a limitation on the embodiments of the present application.
- the base station may map the demodulation reference signal DMRS sequence of the PBCH in the resource unit RE included in the resource block RB of the PBCH according to formula (3).
- a k,l represents the position of the RE occupied by the sequence code included in the DMRS sequence in the RB of the PBCH; k represents the frequency index value on the symbol; l represents the symbol index value on one slot or the RB on the PBCH Symbol index value; m represents the sequence index value of the DMRS sequence.
- the r l (m) in the above formula (3) is used to represent the DMRS sequence, and the DMRS sequence can be obtained by the formula (1) in the above embodiment, with specific reference to the description of the formula (1) in the above embodiment, the present application The embodiments are not described herein again.
- the values of k, l, and m in the above formula (3) may specifically be as in the formula (2-2).
- n density represents the density of the DMRS sequence used for transmitting the RBRS in the RB of the PBCH, specifically the number of intervals RE of the two neighboring REs used to transmit the DMRS sequence in frequency
- v shift represents the starting RE of the DMRS sequence
- the first frequency offset value of the RE relative to the minimum frequency, the offset unit is the number of RE, the v shift may be a fixed value, and the value is less than n density , or the value thereof is Related
- v represents the second frequency offset value of the starting RE position of the DMRS sequence with respect to the RE of the minimum frequency, the offset unit is the number of RE
- l represents the symbol index value on one time slot, or a synchronization signal block ( The index value of the symbol used to transmit the PBCH in SS block); Indicates the cell physical identity of the cell, and mod indicates the remainder.
- Step 203 The base station sends the DMRS sequence to the terminal device by using one or more symbols.
- the base station may send the DMRS sequence to the terminal device by using the one or more symbols, so that the terminal device receives the DMRS sequence of the broadcast signal.
- Step 204 The terminal device receives one or more symbols from the base station, where the one or more symbols include a DMRS sequence.
- the DMRS sequence received by the terminal device may be referred to as a first DMRS sequence.
- Step 205 The terminal device generates a second DMRS sequence according to the pseudo random sequence c(m). Step 205 and step 201-step 204 are in no particular order. In FIG. 4, step 204 is located after step 203 as an example.
- the method for generating the second DMRS sequence by the terminal device according to the pseudo-random sequence c(m) is the same as the method for generating the DMRS sequence of the broadcast signal in the foregoing step 201.
- the description in the foregoing step 201 where the embodiment of the present application is This will not be repeated here.
- Step 206 If the second DMRS sequence matches the first DMRS sequence, the terminal device demodulates the data in the broadcast signal according to the second DMRS sequence.
- Step 206 is located after step 204 and step 205, that is, after the terminal device receives the first DMRS sequence sent by the base station and generates the second DMRS sequence by itself, the terminal device may determine whether the second DMRS sequence matches the first DMRS sequence. fulfil requirements.
- the matching between the second DMRS sequence and the first DMRS sequence is that when the correlation between the first DMRS sequence and the second DMRS sequence is performed, the correlation value is greater than or equal to a preset correlation threshold.
- the terminal device may demodulate the broadcast signal by using the DMRS sequence, thereby ensuring the correctness of the demodulation of the broadcast signal, and enabling the terminal device to quickly access. Base station.
- the terminal device can also perform channel estimation and the like through the DMRS sequence.
- the DMRS sequence sent by the base station received by the terminal device is obtained by the terminal device from one or more symbols sent by the base station.
- the terminal device may determine the location of the RE occupied by the DMRS sequence according to the method in the foregoing step 202.
- the process of acquiring the DMRS sequence by the specific terminal device is similar to the process of mapping the DMRS sequence by the base station. For details, refer to the foregoing description. The embodiments are not described herein again.
- the initialization c init of the pseudo-random sequence c(m) is related to the index value n SS of the sync signal block.
- the broadcast signal may be paging information, system information, or PBCH, in the foregoing steps 201 and 205, when the DMRS sequence of the broadcast signal is generated according to the pseudo random sequence c(m), the pseudo random sequence c
- the initialization of (m) c init is related to what kind of information the broadcast signal is, and the initialization c init is used to generate the pseudo-random sequence c(m), which will be described separately below.
- the initialization c init of the pseudo random sequence c(m) may be any one of the initializations shown by the following formulas (1-1a) to (1-1b), as follows.
- the values of k 1 and k 2 are constants in the range of 0 to 64, and may generally be 15 or 16; n SS represents a set of sync signal segments (SS burst) Index value of the synchronization signal block in set); N ID represents the physical cell identity of the cell Or the identity of a region composed of multiple cells n RNTI indicates the wireless network temporary identification value.
- P-RNTI Paging Radio Network Temporary Identifier
- SI-RNTI System Information Radio Network Temporary Identifier
- m 2 indicates the number of symbols in the RB of the paging information or system information
- l 2 indicates the RB in the paging information or system information.
- the n RNTI may be 0.
- the initialization c init of the pseudo random sequence c(m) may be as shown in the following formula (1-1c)-(1-1j) Any of the initializations is as follows.
- the DMRS of the paging information or the system information may be a DMRS designed in any of the following situations, as described below.
- the DMRS of the PBCH signal in the synchronization signal block can be utilized as the DMRS of the paging information or the system information, or both can use the common DMRS, that is, The DMRS of the paging information or system information and the DMRS of the PBCH have the same antenna port, as shown in FIG.
- the paging information or system information is multiplexed with the PBCH in a Time-Division Multiplex (TDM) manner, and the synchronization signal block can have both Frequency-Division Multiplex (FDM) and TDM multiplexing modes. .
- the paging information or the system information may be located on both sides of the PBCH, or may be located at one side or the middle of the PBCH.
- the proprietary DMRS of the PBCH signal may be used as the paging information or the DMRS of the system information. It should be noted that when the proprietary DMRS of the PBCH signal is used as the paging information or the DMRS of the system information, the bandwidth of the PBCH and the bandwidth of the paging information or the system information should be not much different.
- the paging information or the system information may be TDM multiplexed with the synchronization signal block signal or the multiplex mode of the synchronous signal block signal using FDM and TDM, the paging information or the system information may be utilized in the synchronization signal block.
- the SSS signal and the DMRS carried by itself are used as paging information or DMRS of system information, that is, they have the same antenna port number.
- the SSS signal can be used for channel estimation, and the paging information or system information-specific DMRS can assist the SSS in demodulating paging information or system information, and can also be used to estimate the Doppler shift of the channel.
- the paging information or the multiplexing of the system information and the synchronization signal block may be a TDM mode, an FDM mode, or a FDM and TDM multiplexing mode, as shown in FIG. 6.
- the proprietary DMRS symbol and the SSS symbol of the paging information or the system information may be on the same symbol as shown in (a) of FIG. 6, or may not be on one symbol as shown in (b) of FIG. 6.
- the paging information or the system information may have multiple DMRS symbols, and each symbol has a DMRS; or some of the symbols may have a dedicated DMRS; the DMRS positions on different symbols may be the same or different.
- the paging information or the system information may be TDM multiplexed with the synchronization signal block signal, or the synchronization signal block signal adopts a multiplexing mode in which FDM and TDM exist simultaneously
- the paging information or the system information may be utilized in the synchronization signal block.
- the SSS signal, the DMRS signal of the PBCH demodulates paging information or system information, or assists in demodulating paging information or system information.
- the DMRS of the SSS and the PBCH and the antenna port of the DMRS of the paging information or system information are required to be the same.
- the distribution of the DMRS of the paging information or the system information may be the same frequency offset as the DMRS distribution of the PBCH, or may be a different frequency offset.
- the proprietary DMRS symbol of the paging information or system information may be on the same symbol as the SSS symbol or on the PBCH symbol.
- the symbol of the paging information or the system information may be DMRS on each symbol, or DMRS on some symbols.
- the symbols of the paging information or system information may be located on one side of the sync signal block or on both sides of the sync signal block.
- the paging information or the system information may be TDM multiplexed with the synchronization signal block signal, or the multiplexed manner of the synchronization signal block signal using FDM and TDM, so that the paging information or the system information may utilize the synchronization signal block.
- the DMRS signal of the PBCH demodulates or assists in demodulating paging information or system information, that is, paging information or system information and the PBCH have the same antenna port.
- the distribution of the DMRS of the paging information or the system information may be the same frequency offset as the DMRS distribution of the PBCH, or may be a different frequency offset.
- the symbol of the paging information or the system information may be DMRS on each symbol, or DMRS on some symbols.
- the symbols of the paging information or system information may be located on one side of the sync signal block or on both sides of the sync signal block.
- the system information includes Remaining Minimum System Information (RMSI) and Other System Information (OSI).
- RMSI Remaining Minimum System Information
- OSI System Information
- system information is divided into two types: one is Minimum System Information, which contains key access system information; the other is other system information OSI contains non-critical system information.
- the minimum system information is divided into two parts, one part is the Main Information Block (MIB), which is transmitted in the PBCH.
- MIB Main Information Block
- RMSI which is also a broadcast signal.
- the call information is broadcast together, they can use the same DMRS, ie their DMRS antenna ports are the same.
- the multiplexing of paging information and system information may be in the form of TDM and FDM, but the DMRS sequences are the same or share the same DMRS sequence.
- the paging information or the system information may be TDM multiplexed with the synchronization signal block signal, or may be FDM multiplexing, or a multiplexing mode in which the synchronization signal block signal uses FDM and TDM, or paging information or system information. Scanned separately, not multiplexed with sync blocks.
- the DMRS of paging information or system information can use its own proprietary DMRS signal.
- Paging information or system information-specific DMRS may be used on each symbol used to transmit paging information or system information, or may be part of a symbol.
- Paging information or system information-specific DMRS may have the same frequency offset on each symbol, or may have different frequency offsets on different symbols.
- the DMRS sequence of the PBCH may also be an m sequence or a golden sequence, and each PBCH may have the same sequence or a different sequence, that is, a PBCH. There are two or more sequences on the symbol.
- the DMRS sequence of the PBCH in each synchronization signal block may be the same, that is, each PBCH symbol adopts the same DMRS sequence, or may be different, that is, two PBCH symbols respectively adopt different DMRS sequences or two PBCH symbols.
- a DMRS sequence is shared; the PBCHs on different sync blocks can use the same DMRS sequence, that is, the DMRS sequences on all PBCHs on different sync blocks are the same, or the first PBCH symbol in each sync block
- the same DMRS sequence is used, and the same DMRS sequence is used on the second PBCH symbol; different DMRS sequences may be used on the PBCH of different synchronization signal blocks, and these DMRS sequences may be related to the PBCH symbol or the synchronization signal block.
- the time index correlation may also be related to the slot index value in the radio system frame, or may be related to the symbol index value in the slot, or may be related to the subframe index value in the radio system frame, or may be related to the synchronization signal block.
- the symbol index value within the correlation or the symbol index value of the PBCH within the sync signal block is related.
- the initialization c init of the pseudo-random sequence c(m) may be any one of the initializations shown by the following formulas (1-2a)-(1-2f), as described below.
- N the physical cell identifier of the cell; the value of N half is 0 or 1. When the value is 0, it indicates that the location of the PBCH is located in the first half of the frame of the wireless system. When the value is 1, it indicates that it is located in the frame of the wireless system.
- the second half frame; the value of K ranges from 1 to 64; n SS represents the index value of the sync signal block in a SS burst set; n s represents the slot index in the frame of the wireless system. value.
- the number N RB of the resource block RBs of the PBCH may be specifically expressed as And It may be obtained by the density n density of the DMRS sequence in the RB of the PBCH and the number N symbol of the symbols occupied by the DMRS sequence in one SS block.
- the distribution of PBCH in time is in units of symbols, with 12 subcarriers as frequency units.
- n density can be 12, 6, 4, 3, 2, then The size can be obtained according to formula (A) or according to Table 4 below.
- the DMRS on the symbol occupied by the PBCH is a long DMRS sequence, that is, one DMRS sequence is mapped on multiple symbols, and the density n density of the DMRS sequence on each symbol is different, and is mapped in the SSS bandwidth of the secondary synchronization signal.
- the density is n density1 and the density outside the SSS bandwidth is n density2 .
- the density of the DMRS sequence may be relatively sparse.
- n density1 may be 12 or 6; when outside the SSS bandwidth, the density of the DMRS sequence may be relatively dense, for example, n density2 may be 4, 3, Or 2.
- the size can be obtained according to formula (B) or according to Table 5 below.
- n density can be 12, 6, 4, 3, 2, then the corresponding The size can be 24, 48, 72, 96 and 144.
- the broadcast signal is a PBCH
- the PBCH and the synchronization signal block may be time division multiplexed TDM
- the SSS in the synchronization signal block and the proprietary DMRS may be utilized as the DMRS of the PBCH.
- the number of subcarriers of the PBCH is twice the number of subcarriers of the SSS
- a denser DMRS is required, or there is no DMR on the same bandwidth as the SSS to satisfy the PBCH.
- the demodulation performance is as shown in (a) of FIG.
- the number of DMRS symbols of the PBCH may be a single symbol or two symbols, as shown in (b) and (c) of FIG.
- the frequency offsets of the DMRSs of different symbols of the PBCH may be the same or different, and even some resource blocks have no DMRS.
- the base station In the method for generating a demodulation reference signal sequence provided by the embodiment of the present application, the base station generates a demodulation reference signal DMRS sequence of the broadcast signal according to the pseudo random sequence c(m), and the number of the DMRS sequence and the resource block RB based on the broadcast signal
- the N RB is associated with the number of RE REs occupied by the DMRS sequence in an RB, so that the base station maps it to one or more symbols and sends the DMRS sequence to the terminal device according to the same method.
- the generated DMRS sequence matches the DMRS sequence sent by the base station, the data of the broadcast signal is demodulated by the DMRS sequence, so that the method can determine the DMRS sequence corresponding to each broadcast signal, thereby ensuring that the broadcast signal is correctly demodulated, At the same time, the efficiency of the terminal device accessing the base station is also improved.
- FIG. 8 is a flowchart of an information indication method according to an embodiment of the present application. Referring to FIG. 8, the method includes the following steps.
- Step 301 The base station generates a first sequence and a second sequence.
- the first sequence and the second sequence may be a sequence of a demodulation reference signal DMRS sequence of the PBCH or a secondary synchronization reference signal SSS.
- the first sequence and the second sequence are two different sequences, and the first sequence and the second sequence may be both DMRS sequences or sequences of SSS at the same time.
- Step 302 The base station sends a target sequence to the terminal device. If the target sequence is the first sequence, it is used to indicate that the base station allows the terminal device to camp; if the target sequence is the second sequence, it is used to indicate that the base station does not allow the terminal device to camp.
- Step 303 The terminal device receives the target sequence sent by the base station, and determines that the base station allows the terminal device to camp if the target sequence is the first sequence, and determines that the base station does not allow the terminal device to camp if the target sequence is the second sequence.
- the base station may use the DMRS sequence of the PBCH or the sequence of the SSS to indicate whether the base station allows the UE to or can not camp on the cell.
- the base station uses two different PBCH DMRS sequences or two different SSS sequences to indicate whether the base station allows the terminal device to camp.
- the base station may further indicate to the terminal device whether the base station allows the terminal device to camp at different positions in the PBCH or different frequency positions of the SSS sequence by using the DMRS sequence, as described below.
- the base station indicates, by using the method indicated by the following information, whether the base station allows the terminal device to camp.
- the method includes: the base station generates a first sequence; the base station sends the first sequence to the terminal device; wherein, if the location of the first sequence is the first location, The first sequence is used to indicate that the base station allows the terminal device to camp; if the location of the first sequence is the second location, the first sequence is used to indicate that the base station does not allow the terminal device to camp, and the first location and the second location are different.
- the terminal device may determine whether the base station allows the terminal device to camp by using the following information indicating method, where the method includes: the terminal device receives the first sequence sent by the base station; and if the location where the first sequence is located is the first location, the terminal device Determining that the base station allows the terminal device to camp; if the location of the first sequence is the second location, the terminal device determines that the base station does not allow the terminal device to camp, and the first location and the second location are different.
- the base station and the terminal device may further indicate, according to the foregoing method for indicating whether the base station allows the terminal device to camp, whether the base station reads the value of the RMSI information, and the specific process is similar to the foregoing process of indicating whether the base station allows the terminal device to camp.
- the application examples are not described herein again.
- the DMRS sequence of the PBCH or the sequence of the PSS/SSS may also be used to indicate any one of the following information: a frame number part information of a system frame number (SFN), and a super Frame number part information of the Hyper System Frame Number (H-SFN), the System Regarding Bandwidth Part, the value tag, and the Control Resource Set (CORESET) of the downlink control channel.
- SFN system frame number
- H-SFN Hyper System Frame Number
- CORESET Control Resource Set
- the base station reads the value of the RMSI information, the frequency resource information of the PDSCH, the subcarrier of the RMSI (Numerology), the FDD/TDD identifier, the cell ID extension, the area identifier (Area Identity, Area ID), (Tracking Reference Signal, TRS) configuration information, and synchronization signal block index.
- the details are as follows.
- the base station indicates the frame number partial information of the SFN or H-SFN using the DMRS sequence of the PBCH or the sequence of the PSS/SSS.
- the method includes: the base station generates at least one sequence, and the at least one sequence is any one of the following: a DMRS sequence of the PBCH, a sequence of the PSS, a sequence of the SSS, and each of the at least one sequence corresponds to a wireless system frame SFN or a partial frame number of a hyper-radio system frame H-SFN; the base station transmits a target sequence to the terminal device, the target sequence is a sequence in at least one sequence, and the target sequence is used to indicate to the terminal device the SFN or H-SFN corresponding to the target sequence Part of the frame number.
- the terminal device receives the target sequence sent by the base station, and the target sequence is a sequence in at least one sequence; wherein at least one sequence is any one of the following sequences: a DMRS sequence of the PBCH, a sequence of the PSS, and a sequence of the SSS, at least Each sequence in a sequence corresponds to a radio system frame SFN or a partial frame number of a hyper-radio system frame H-SF; the terminal device determines a partial frame number of the SFN or H-SFN corresponding to the target sequence according to the target sequence.
- the base station uses the different sequence of the DMRS of the PBCH or the different sequence of the PSS/SSS to indicate the frame number of the frame of the wireless system.
- MSB Most Significant Bit
- the base station indicates 2 bits of the highest data bit of the SFN or H-SFN through four sequences, with sequence 1 corresponding to 00, sequence 2 corresponding to 01, sequence 3 corresponding to 10, and sequence 4 corresponding to 11.
- the DMRS sequence of the PBCH or the sequence of the PSS/SSS indicates the X bits of the Least Significant Bit (LSB) of the SFN.
- the DMRSs of two symbols may also be used to respectively indicate different frame numbers of the SFN.
- the frame number portion information of the SFN may be represented by the position of the DMRS sequence.
- the base station uses the DMRS sequence of the PBCH or the sequence of the PSS/SSS to indicate the system bandwidth.
- the method includes: the base station generates at least one sequence, and at least one sequence is any one of the following sequences: a DMRS sequence of the PBCH, a sequence of the PSS a sequence of SSS, each sequence of at least one sequence corresponding to a system bandwidth; the base station transmits a target sequence to the terminal device, the target sequence is a sequence in at least one sequence, and the target sequence is used to indicate to the terminal device a system corresponding to the target sequence bandwidth.
- the terminal device receives the target sequence sent by the base station, and the target sequence is a sequence in at least one sequence; wherein at least one sequence is any one of the following sequences: a DMRS sequence of the PBCH, a sequence of the PSS, and a sequence of the SSS, at least Each sequence in a sequence corresponds to a system bandwidth; the terminal device determines the system bandwidth corresponding to the target sequence according to the target sequence.
- the base station may use N different PBCH DMRS sequences or N different sequences of PSS/SSS to indicate N different system bandwidths.
- N different system bandwidths can be either full system bandwidth or partial system bandwidth.
- the DMRS sequences of two symbols can also be used to respectively use different sequences to jointly indicate all or part of the information of the system bandwidth.
- the base station uses the DMRS sequence of the PBCH to indicate any one of the following information: the valid value identifier, the scheduling information set of the downlink control channel, the CORESET information, the frequency resource information of the PDSCH, the FDD/TDD identifier, the extended cell identifier, the area identifier, TRS configuration information.
- the method includes: the base station generates at least one sequence, at least one sequence is a DMRS sequence of the PBCH, and each sequence in the at least one sequence corresponds to one specified information, and the specified information is any one of the following information: a valid value identifier, and a downlink control channel.
- the base station transmits a target sequence to the terminal device, and the target sequence is a sequence in at least one sequence The target sequence is used to indicate to the terminal device the specified information corresponding to the target sequence.
- the terminal device receives the target sequence sent by the base station, and the target sequence is a sequence in at least one sequence; wherein at least one sequence is a DMRS sequence of the PBCH, and each sequence in the at least one sequence corresponds to a specified information, and the information is specified below. Any one of the following: the RMS identifier, the scheduling information set of the downlink control channel, the CORESET information, the frequency resource information of the PDSCH, the FDD/TDD identifier, the extended cell identifier, the area identifier, the TRS configuration information, and the synchronization signal block index; The target sequence determines the specified information corresponding to the target sequence.
- the base station uses the DMRS sequence of the PBCH to indicate the valid value identifier.
- a DMRS sequence using N different PBCHs represents N different valid value identifiers.
- the DMRSs of two symbols may be used to respectively use different sequences, which together represent N different valid value identifiers.
- N different valid value identifiers may be represented by different locations of the DMRS in the PBCH.
- the base station uses the DMRS of the PBCH to indicate part or all of the information of the scheduling information set (CORESET) of the downlink control channel.
- N different PBCH DMRS sequences are used to indicate scheduling information sets (CORESET) of N different downlink control channels.
- N different PBCH DMRS sequences are used to indicate log2(N) bits of the MSB of the scheduling information set (CORESET) of the downlink control channel or log2(N) bits of the LSB indicating the scheduling information set (CORESET) of the downlink control channel.
- the scheduling information set (CORESET) of the N different downlink control channels may also be indicated at different locations in the PBCH of the DMRS.
- the base station uses the DMRS of the PBCH to indicate the frequency resource information of the PDSCH.
- the DMRS sequence of N different PBCHs is used to indicate frequency resource information of N different PDSCHs.
- the DMRS sequence of the PBCH is used to indicate N bits of the MSB of the frequency resource information of the PDSCH or N bits of the LSB.
- the DMRSs of the two symbols may also use different sequences to jointly indicate the frequency resource information of the PDSCH.
- the frequency resource information of the N types of PDSCHs may be indicated by different locations of the DMRS in the PBCH.
- the base station uses the DMRS of the PBCH to indicate the subcarrier spacing of the RMSI.
- a DMRS sequence using N different PBCHs indicates subcarrier spacing of N different RMSIs.
- the DMRS sequence of the PBCH is used to indicate the N bits of the MSB of the subcarrier spacing of the RMSI or the N bits of the LSB.
- the DMRSs of two symbols can also be used to respectively use different sequences to jointly indicate the subcarrier spacing of N different RMSIs.
- subcarrier spacing of N different RMSIs may be indicated at different locations in the PBCH of the DMRS sequence.
- the base station uses the DMRS of the PBCH to indicate the FDD/TDD identifier.
- a DMRS sequence using two different PBCHs indicates the value of the FDD/TDD flag.
- the value of the FDD/TDD identity of the base station may be indicated at different locations in the PBCH using the DMRS sequence.
- the base station uses the DMRS of the PBCH to indicate the extended cell identity.
- a DMRS sequence using N different PBCHs indicates N different extended cell identifiers.
- the DMRS sequence of the PBCH is used to indicate the N bits of the MSB of the extended cell identifier or the N bits of the LSB.
- the DMRSs of two symbols may also be used to respectively use different sequences to jointly indicate the extended cell identity. It is also possible to indicate extended cell identification part information or all information using different locations of the DMRS in the PBCH.
- the base station uses the DMRS sequence of the PBCH to indicate the area identifier.
- a DMRS sequence using N different PBCHs indicates N different area identifiers.
- the DMRS sequence of the PBCH is used to indicate the N bits of the MSB identified by the area or the N bits of the LSB.
- the DMRSs of two symbols may also be used to respectively use different sequences to jointly indicate the area identifier.
- the base station uses the DMRS sequence of the PBCH to indicate the combination of the TRS configuration information.
- N different PBCH DMRS sequences are used to indicate N different TRS configuration information.
- DMRSs of two symbols may be used to respectively use different sequences to jointly indicate N different TRS configuration information.
- N different TRS configuration information may be represented by different locations of the DMRS in the PBCH.
- the base station indicates the SS block index through the DMRS sequence of the PBCH. Specifically, the base station can perform indication by using two different methods as follows.
- the first type the base station combines the DMRS sequence of the PBCH with the synchronization signal block index of the PBCH, and separately designs two symbols for transmitting the DMRS sequence, and jointly represents the index value of the synchronization signal block. For example, suppose that there are 64 index values of the sync signal block to be represented, and the 64 index values can be separately represented, that is, there are 8 kinds of DMRS sequences on the first symbol, and 8 types of DMRS sequences on the second symbol. The sequence of two symbols can be combined to represent all of the sync block indices in a SS burst set.
- DMRS to indicate the N bits of the MSB of the synchronization signal block index of the PBCH or the N bits of the LSB, and the remaining data bits are transmitted in two ways, and the first implicit manner transmits N3 bits, including scrambling.
- N+N3 is the complete data bit of the synchronization signal block index of the PBCH; another transmission
- the method is explicit and implicit, and the explicit means that N1 bits are transmitted in the content of the PBCH, and N2 bits are implicitly transmitted through the implicit transmission, wherein N+N1+N2 is the index of the synchronization signal block of the complete PBCH. Data bits.
- All DMRS sequences on both symbols may be the same or different.
- the eight DMRS sequences on each symbol can be generated by a cyclic shift of one sequence or eight independent sequences.
- the eight independent sequences represent the golden sequences generated by the eight sequences using different initialization formulas, or eight pseudo-random sequences that are not initialized, such as m-sequences or ZC sequences.
- the sequence herein may be a pseudo random sequence such as a ZC sequence, a golden sequence, an m sequence, or a combination of these sequences, such as the combination of the two sequences shown in (a) and (b) of Fig. 9.
- the combination shown in (a) of FIG. 9 indicates that in the bandwidth of the PBCH, the DMRS sequence on each symbol is a complete sequence; the combination shown in (b) of FIG. 9 indicates that In the PBCH bandwidth, the PBCH of each symbol uses one DMRS sequence on the bandwidth frequency resource overlapping with the SSS. On the resources other than the SSS bandwidth, another DMRS sequence is used, that is, a plurality of DMRS sequences on one synchronization signal block are combined. DMRS of PBCH.
- the base station fuses the DMRS sequence of the PBCH with the synchronization signal block index of the PBCH, and designs the DMRS sequence of the PBCH by using two symbols.
- the DMRS sequence of each symbol represents the index value of the synchronization signal segment, and the second symbol
- the DMRS sequence represents the index value of the sync signal block, and the sequence of the two symbols together can represent all the sync block index in a set of sync signal segments.
- the DMRS sequence on the first symbol represents the synchronization signal block index value in the synchronization signal segment
- the DMRS sequence on the second symbol represents the index value of the synchronization signal segment
- the sequence of the two symbols together can represent a synchronization signal. All sync block indexes in the set of segments.
- the DMRS sequences on the two symbols may be the same or different.
- the eight DMRS sequences on each symbol can be a cyclic shift of one sequence or eight independent sequences.
- the eight independent sequences represent the golden sequences generated by the eight sequences using different initialization formulas, or eight pseudo-random sequences that are not initialized, such as m-sequences or ZC-sequences, where the sequences described herein are pseudo-random sequences.
- Such as ZC sequence, golden sequence, m sequence It is also possible that a combination of these sequences or a combination of these sequences together with the frequency domain position of the DMRS represents a sync block index.
- the base station may use the DMRS sequence of the PBCH or the sequence of the SSS to indicate whether the base station allows the terminal device to camp, the frame number part information of the SFN, the frame number of the H-SFN, the system bandwidth, and the effective value.
- Identification part or all of the information of the scheduling information set of the downlink control channel, whether the base station reads the value of the RMSI information, the frequency resource information of the PDSCH, the subcarrier spacing of the RMSI, the FDD/TDD identifier, the extended cell identifier, the area identifier, and the TRS configuration
- the information, and any information in the synchronization signal block index can save signaling interaction between the base station and the terminal device, thereby reducing overhead and detection complexity of the terminal device.
- each network element such as a base station, a terminal device, a chip of a base station, a chip of a terminal device, etc.
- each network element includes hardware structures and/or software modules corresponding to each function.
- the present application can be implemented in a combination of hardware or hardware and computer software in conjunction with the network elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
- the embodiments of the present application may divide the functional modules of the base station, the terminal device, the chip of the base station, and the chip of the terminal device according to the foregoing method.
- each function module may be divided according to each function, or two or more functions may be used.
- the functions are integrated in one processing module.
- the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
- FIG. 10 is a schematic diagram showing a possible structure of the device 400 involved in the foregoing embodiment.
- the device 400 may be a base station or a chip on a base station.
- the apparatus 400 includes a processing unit 401 and a transmitting unit 402.
- the processing unit 401 is configured to perform step 201 and step 202 in FIG. 4, step 301 in FIG. 8, and/or other processes for the techniques described herein; the transmitting unit 402 is used in step 203 in FIG. Step 302 in Figure 8, and/or other processes for the techniques described herein. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional description of the corresponding functional modules, and details are not described herein again.
- the processing unit 401 may be a processor, and the sending unit 402 may be a sending interface, and the receiving interface may form a communication interface.
- FIG. 11 is a schematic diagram showing a possible logical structure of the device 410 involved in the foregoing embodiment provided by the embodiment of the present application.
- the device 410 includes a processor 412, a communication interface 413, a memory 411, and a bus 414.
- the processor 412, the communication interface 413, and the memory 411 are connected to one another via a bus 414.
- the processor 412 is configured to control and manage the actions of the device 410.
- the processor 412 is configured to perform step 201 and step 202 in FIG. 4, step 301 in FIG. 8, and/or Other processes of the techniques described herein.
- Communication interface 413 is used to support device 410 for communication.
- the memory 411 is configured to store program codes and data of the device 410.
- the processor 412 can be a central processing unit CPU, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
- the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, combinations of digital signal processors and microprocessors, and the like.
- the bus 414 can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus or the like.
- PCI Peripheral Component Interconnect
- EISA Extended Industry Standard Architecture
- FIG. 12 is a schematic diagram showing a possible structure of the device 500 involved in the foregoing embodiment.
- the device 500 may be a terminal device or a terminal device. chip.
- the apparatus 500 includes a receiving unit 501 and a processing unit 502.
- the receiving unit 501 is configured to perform the steps of step 203 in FIG. 4, the step of receiving the target sequence in step 303 of FIG. 8, and/or other processes for the techniques described herein;
- the processing unit 502 is configured to execute the method in FIG.
- the processing unit 502 may be a processor
- the receiving unit 501 may be a receiving interface, which may form a communication interface with the sending interface.
- FIG. 13 is a schematic diagram showing a possible logical structure of a device 510 involved in the foregoing embodiment provided by an embodiment of the present application.
- the device 510 includes a processor 512, a communication interface 513, a memory 511, and a bus 514.
- the processor 512, the communication interface 513, and the memory 511 are connected to one another via a bus 514.
- the processor 512 is configured to perform control management on the action of the device 510.
- the processor 512 is configured to perform step 205 and step 206 in FIG. 4, and step 303 in FIG. 8 determines whether the base station allows the terminal.
- Communication interface 513 is used to support device 510 for communication.
- the memory 511 is configured to store program codes and data of the device 510.
- the processor 512 can be a central processing unit CPU, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
- the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, combinations of digital signal processors and microprocessors, and the like.
- the bus 514 can be a peripheral component interconnect standard PCI bus or an extended industry standard architecture EISA bus or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 13, but it does not mean that there is only one bus or one type of bus.
- a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the above-described FIG. 4 or FIG. The steps of the base station or the steps of the terminal device in the provided method.
- a computer program product comprising instructions which, when run on a computer, cause the computer to perform the steps or terminal of the base station in the method of FIG. 4 or FIG. 8 described above The steps of the device.
- a system comprising a base station and a terminal device; wherein the base station may be the base station provided in FIG. 10 or FIG. 11 above, for performing the above FIG. 4 or FIG. 8 is the step of the base station in the method provided; and/or the terminal device is the terminal device provided in FIG. 12 or FIG. 13 above, for performing the steps of the terminal device in the method provided in FIG. 4 or FIG. 8 above.
- the base station can ensure that the broadcast signal has a proper demodulation reference signal sequence by generating a demodulation reference signal sequence of the broadcast signal and performing mapping of the demodulation reference signal sequence. At the same time, the efficiency and accuracy of demodulation of the broadcast signal are improved.
- the information indication method provided by the embodiment of the present application can save signaling interaction between the base station and the terminal device, thereby reducing overhead and detection complexity of the terminal device.
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Abstract
Description
图3为本申请实施例所应用的终端设备的结构示意图,该终端设备可以为手机、平板电脑、笔记本电脑、移动设备、移动台(mobile station)、移动单元(mobile unit)、M2M终端、无线单元,远程单元、用户代理、移动客户端等等。如图3所示,该终端设备包括:存储器、处理器、射频(Radio Frequency,RF)电路、以及电源等部件。本领域技术人员可以理解,图3中示出的结构并不构成对终端设备的限定,可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置。
n density和v shift+v的取值 | k的取值 |
n density=2,v shift+v=0 | 0,2,4,6,…,12N RB-2 |
n density=2,v shift+v=1 | 1,3,5,7,…,12N RB-1 |
n density=3,v shift+v=0 | 0,3,6,9,…,12N RB-3 |
n density=3,v shift+v=1 | 1,4,7,10,…,12N RB-2 |
n density=3,v shift+v=2 | 2,5,8,11,…,12N RB-1 |
n density=4,v shift+v=0 | 0,4,8,12,…,12N RB-4 |
n density=4,v shift+v=1 | 1,5,9,13,…,12N RB-3 |
n density=4,v shift+v=2 | 2,6,10,14,…,12N RB-2 |
n density=4,v shift+v=3 | 3,7,11,15,…,12N RB-1 |
n density=6,v shift+v=0 | 0,6,12,18,…,12N RB-6 |
n density=6,v shift+v=1 | 1,7,13,19,…,12N RB-5 |
n density=6,v shift+v=2 | 2,8,14,20,…,12N RB-4 |
n density=6,v shift+v=3 | 3,9,15,21,…,12N RB-3 |
n density=6,v shift+v=4 | 4,10,16,22,…,12N RB-2 |
n density=6,v shift+v=5 | 5,11,17,23,…,12N RB-1 |
n density=12,v shift+v=0 | 0,12,24,36,…,12N RB-12 |
n density=12,v shift+v=1 | 1,13,25,37,…,12N RB-11 |
n density=12,v shift+v=2 | 2,14,26,38,…,12N RB-10 |
n density=12,v shift+v=3 | 3,15,27,39,…,12N RB-9 |
n density=12,v shift+v=4 | 4,16,28,40,…,12N RB-8 |
n density=12,v shift+v=5 | 5,17,29,41,…,12N RB-7 |
n density=12,v shift+v=6 | 6,18,30,42,…,12N RB-6 |
n density=12,v shift+v=7 | 7,19,31,43,…,12N RB-5 |
n density=12,v shift+v=8 | 8,20,32,44,…,12N RB-4 |
n density=12,v shift+v=9 | 9,21,33,45,…,12N RB-3 |
n density=12,v shift+v=10 | 10,22,34,46,…,12N RB-2 |
n density=12,v shift+v=11 | 11,23,35,47,…,12N RB-1 |
Claims (82)
- 一种解调参考信号序列生成方法,其特征在于,所述方法包括:根据伪随机序列c(m),生成广播信号的解调参考信号DMRS序列;其中,所述DMRS序列与所述广播信号的资源块RB的数量N RB和一个RB中所述DMRS序列占用的资源单元RE的数量n RE相关;将所述DMRS序列映射到一个或者多个符号中。
- 根据权利要求1所述的方法,其特征在于,所述广播信号为寻呼信息、物理广播信道PBCH或者系统信息。
- 根据权利要求1-3任一项所述的方法,其特征在于,所述n RE取值为3或4。
- 根据权利要求1-5任一项所述的方法,其特征在于,所述将所述DMRS序列映射到一个或者多个符号中,具体包括:根据公式(2),将所述DMRS序列映射在所述广播信号的资源块RB包括的资源单元RE中,a k,l=r l,n(m) (2)式中,所述a k,l表示所述DMRS序列包括的序列码在所述RB中占用的RE的位置,所述k表示符号上的频率索引值,所述l表示一个时隙上的符号索引值或者所述广播信号的RB上的符号索引值,所述n表示所述广播信号的调度资源单位的索引值,所述m表示所述DMRS序列的序列索引值。
- 根据权利要求1所述的方法,其特征在于,当所述DMRS序列映射到多个符号时,所述多个符号的数量为3。
- 根据权利要求2所述的方法,其特征在于,所述广播信号占用多个符号,且所述多个符号上的DMRS序列在RB内的频率偏移位置均相同。
- 根据权利要求1所述的方法,其特征在于,所述伪随机序列c(m)是根据无线系统帧内的时隙索引值确定的。
- 根据权利要求1所述的方法,其特征在于,所述伪随机序列c(m)是根据一个时隙内的符号数量确定的。
- 根据权利要求2所述的方法,其特征在于,当所述广播信号为PBCH时,所述DMRS序列用于指示所述PBCH的同步信号块索引中最低数据位LSB的N个比特。
- 根据权利要求1所述的方法,其特征在于,所述DMRS序列占用的符号个数为1、2、3或者4。
- 根据权利要求1所述的方法,其特征在于,当所述DMRS序列映射到多个符号时,所述多个符号上的DMRS序列的密度均相同。
- 根据权利要求2所述的方法,其特征在于,所述寻呼信息的DMRS序列或所述系统信息的DMRS与同步信号块频分复用。
- 一种解调参考信号序列生成方法,其特征在于,所述方法包括:接收来自基站的广播信号的第一解调参考信号DMRS序列;根据伪随机序列c(m),生成第二DMRS序列;其中,所述第二DMRS序列与所述广播信号的资源块RB的数量N RB和一个RB中所述DMRS序列占用的资源单元RE的数量n RE相关;若所述第二DMRS序列与从基站接收的第一DMRS序列匹配满足要求,则根据所述第二DMRS解调所述广播信号中的数据。
- 根据权利要求16所述的方法,其特征在于,所述广播信号为寻呼信息、物理广播信道PBCH或者系统信息。
- 根据权利要求16-18任一项所述的方法,其特征在于,所述n RE取值为3或4。
- 根据权利要求16-19任一项所述的方法,其特征在于,通过物理下行控制信道PDCCH、或者物理广播信道PBCH、或者RMSI获取所述N RB。
- 根据权利要求16所述的方法,其特征在于,当所述DMRS序列映射到多个符号时,所述多个符号的数量为3。
- 根据权利要求17所述的方法,其特征在于,所述广播信号占用多个符号,且所述多个符号上的DMRS序列在RB内的频率偏移位置均相同。
- 根据权利要求16所述的方法,其特征在于,所述伪随机序列c(m)是根据无线系统帧内的时隙索引值确定的。
- 根据权利要求16所述的方法,其特征在于,所述伪随机序列c(m)是根据一个时隙内的符号数量确定的。
- 根据权利要求17所述的方法,其特征在于,当所述广播信号为PBCH时,所述DMRS序列用于指示所述PBCH的同步信号块索引中最低数据位LSB的N个比特。
- 根据权利要求1所述的方法,其特征在于,所述DMRS序列占用的符号个数为1、2、3或者4。
- 根据权利要求16所述的方法,其特征在于,当所述DMRS序列映射到多个符号时,所述多个符号上的DMRS序列的密度均相同。
- 根据权利要求17所述的方法,其特征在于,所述寻呼信息的DMRS序列或所述系统信息的DMRS与同步信号块频分复用。
- 一种解调参考信号序列映射方法,其特征在于,所述方法包括:生成广播信号的解调参考信号DMRS序列;根据公式(2),将所述DMRS序列映射在所述广播信号的资源块RB包括的资源单元RE中,a k,l=r l,n(m) (2)式中,所述a k,l表示所述DMRS序列包括的序列码在所述RB中占用的RE的位置, 所述k表示符号上的频率索引值,所述l表示一个时隙上的符号索引值或者所述广播信号的RB上的符号索引值,所述n表示所述广播信号的调度资源单位的索引值,所述m表示所述DMRS序列的序列索引值。
- 根据权利要求30所述的方法,其特征在于,所述广播信号为寻呼信息、或者系统信息。
- 一种解调参考信号序列获取方法,其特征在于,所述方法包括:接收基站通过广播信号的资源块RB发送的解调参考信号DMRS序列;根据公式(2),确定所述DMRS序列在所述广播信号的RB包括的资源单元RE中的位置,a k,l=r l,n(m) (2)式中,所述a k,l表示所述DMRS序列包括的序列码在所述RB中占用的RE的位置,所述k表示符号上的频率索引值,所述l表示一个时隙上的符号索引值或者所述广播信号的RB上的符号索引值,所述n表示所述广播信号的调度资源单位的索引值,所述m表示所述DMRS序列的序列索引值;根据所述DMRS序列的位置,从所述广播信号的RB中获取所述DMRS序列。
- 根据权利要求36所述的方法,其特征在于,所述广播信号为寻呼信息、或者系统信息。
- 一种装置,其特征在于,所述装置包括:处理单元,用于根据伪随机序列c(m),生成广播信号的解调参考信号DMRS序列;其中,所述DMRS序列与所述广播信号的资源块RB的数量N RB和一个RB中所述DMRS序列占用的资源单元RE的数量n RE相关;所述处理单元,用于将所述DMRS序列映射到一个或者多个符号中。
- 根据权利要求42所述的装置,其特征在于,所述广播信号为寻呼信息、物理广播信道PBCH或者系统信息。
- 根据权利要求42-44任一项所述的装置,其特征在于,所述n RE取值为3或4。
- 根据权利要求42-46任一项所述的装置,其特征在于,所述处理单元,具体用 于:根据公式(2),将所述DMRS序列映射在所述广播信号的资源块RB包括的资源单元RE中,a k,l=r l,n(m) (2)式中,所述a k,l表示所述DMRS序列包括的序列码在所述RB中占用的RE的位置,所述k表示符号上的频率索引值,所述l表示一个时隙上的符号索引值或者所述广播信号的RB上的符号索引值,所述n表示所述广播信号的调度资源单位的索引值,所述m表示所述DMRS序列的序列索引值。
- 根据权利要求42所述的装置,其特征在于,当所述DMRS序列映射到多个符号时,所述多个符号的数量为3。
- 根据权利要求43所述的装置,其特征在于,所述广播信号占用多个符号,且所述多个符号上的DMRS序列在RB内的频率偏移位置均相同。
- 根据权利要求42所述的装置,其特征在于,所述伪随机序列c(m)是根据无线系统帧内的时隙索引值确定的。
- 根据权利要求42所述的装置,其特征在于,所述伪随机序列c(m)是根据一个时隙内的符号数量确定的。
- 根据权利要求43所述的装置,其特征在于,当所述广播信号为PBCH时,所述DMRS序列用于指示所述PBCH的同步信号块索引中最低数据位LSB的N个比特。
- 根据权利要求42所述的装置,其特征在于,所述DMRS序列占用的符号个数为1、2、3或者4。
- 根据权利要求42所述的装置,其特征在于,当所述DMRS序列映射到多个符号时,所述多个符号上的DMRS序列的密度均相同。
- 根据权利要求43所述的装置,其特征在于,所述寻呼信息的DMRS序列或所述系统信息的DMRS与同步信号块频分复用。
- 一种装置,其特征在于,所述装置包括:接收单元,用于接收来自基站的广播信号的第一解调参考信号DMRS序列;处理单元,用于根据伪随机序列c(m),生成第二DMRS序列;其中,所述第二DMRS序列与所述广播信号的资源块RB的数量N RB和一个RB中所述DMRS序列占用的资源单元RE的数量n RE相关;所述处理单元,还用于若所述第二DMRS序列与所述第一DMRS匹配满足要求,则根据所述第二DMRS解调所述广播信号的数据。
- 根据权利要求57所述的装置,其特征在于,所述广播信号为寻呼信息、物理广播信道PBCH或者系统信息。
- 根据权利要求57-59任一项所述的装置,其特征在于,所述n RE取值为3或4。
- 根据权利要求57-60任一项所述的装置,其特征在于,所述接收单元还用于通过物理下行控制信道PDCCH、或者物理广播信道PBCH、或者RMSI获取所述N RB。
- 根据权利要求57所述的装置,其特征在于,当所述DMRS序列映射到多个符号时,所述多个符号的数量为3。
- 根据权利要求58所述的装置,其特征在于,所述广播信号占用多个符号,且所述多个符号上的DMRS序列在RB内的频率偏移位置均相同。
- 根据权利要求57所述的装置,其特征在于,所述伪随机序列c(m)是根据无线系统帧内的时隙索引值确定的。
- 根据权利要求57所述的装置,其特征在于,所述伪随机序列c(m)是根据一个时隙内的符号数量确定的。
- 根据权利要求58所述的装置,其特征在于,当所述广播信号为PBCH时,所述DMRS序列用于指示所述PBCH的同步信号块索引中最低数据位LSB的N个比特。
- 根据权利要求57所述的装置,其特征在于,所述DMRS序列占用的符号个数为1、2、3或者4。
- 根据权利要求57所述的装置,其特征在于,当所述DMRS序列映射到多个符 号时,所述多个符号上的DMRS序列的密度均相同。
- 根据权利要求58所述的装置,其特征在于,所述寻呼信息的DMRS序列或所述系统信息的DMRS与同步信号块频分复用。
- 一种装置,其特征在于,所述装置包括:处理单元,用于生成广播信号的解调参考信号DMRS序列;所述处理单元,还用于根据公式(2),将所述DMRS序列映射在所述广播信号的资源块RB包括的资源单元RE中,a k,l=r l,n(m) (2)式中,所述a k,l表示所述DMRS序列包括的序列码在所述RB中占用的RE的位置,所述k表示符号上的频率索引值,所述l表示一个时隙上的符号索引值或者所述广播信号的RB上的符号索引值,所述n表示所述广播信号的调度资源单位的索引值,所述m表示所述DMRS序列的序列索引值。
- 根据权利要求71所述的装置,其特征在于,所述广播信号为寻呼信息、或者系统信息。
- 一种装置,其特征在于,所述装置包括:接收单元,用于接收基站通过广播信号的资源块RB发送的解调参考信号DMRS序列;处理单元,用于根据公式(2),确定所述DMRS序列在所述广播信号的RB包括的资源单元RE中的位置,a k,l=r l,n(m) (2)式中,所述a k,l表示所述DMRS序列包括的序列码在所述RB中占用的RE的位置,所述k表示符号上的频率索引值,所述l表示一个时隙上的符号索引值或者所述广播信号的RB上的符号索引值,所述n表示所述广播信号的调度资源单位的索引值,所述m表示所述DMRS序列的序列索引值;所述处理单元,还用于根据所述DMRS序列的位置,从所述广播信号的RB中获取所述DMRS序列。
- 根据权利要求77所述的装置,其特征在于,所述广播信号为寻呼信息、或者系统信息。
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CA3063956A1 (en) | 2019-12-10 |
KR20200007913A (ko) | 2020-01-22 |
EP3614757A1 (en) | 2020-02-26 |
CN108989003B (zh) | 2024-06-25 |
US20200099500A1 (en) | 2020-03-26 |
EP3614757A4 (en) | 2020-04-15 |
US11431466B2 (en) | 2022-08-30 |
CN108989003A (zh) | 2018-12-11 |
KR102415212B1 (ko) | 2022-07-01 |
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