CN108809877B - Transmission method, device, base station and terminal for demodulation reference signal - Google Patents

Transmission method, device, base station and terminal for demodulation reference signal Download PDF

Info

Publication number
CN108809877B
CN108809877B CN201710309296.9A CN201710309296A CN108809877B CN 108809877 B CN108809877 B CN 108809877B CN 201710309296 A CN201710309296 A CN 201710309296A CN 108809877 B CN108809877 B CN 108809877B
Authority
CN
China
Prior art keywords
pbch
demodulation reference
reference signal
resource
subcarriers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710309296.9A
Other languages
Chinese (zh)
Other versions
CN108809877A (en
Inventor
李铁
郑方政
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
Original Assignee
China Academy of Telecommunications Technology CATT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Academy of Telecommunications Technology CATT filed Critical China Academy of Telecommunications Technology CATT
Priority to CN201710309296.9A priority Critical patent/CN108809877B/en
Publication of CN108809877A publication Critical patent/CN108809877A/en
Application granted granted Critical
Publication of CN108809877B publication Critical patent/CN108809877B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
    • H04W28/0263—Traffic management, e.g. flow control or congestion control per individual bearer or channel involving mapping traffic to individual bearers or channels, e.g. traffic flow template [TFT]
    • 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
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • 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

Abstract

The invention provides a method, a device, a base station and a terminal for transmitting a demodulation reference signal, which solve the problem of transmission of PBCH demodulation pilot frequency in a new air interface NR system. The transmission method of the invention comprises the following steps: in target resources occupied by an NR physical broadcast channel PBCH, mapping a demodulation reference signal of the PBCH in a time division multiplexing and/or frequency division multiplexing mode; and sending the target resource mapped with the demodulation reference signal of the PBCH to a terminal. The embodiment of the invention sends the PBCH demodulation reference signal to the terminal through the resource occupied by the new air interface NR physical broadcast channel PBCH, thereby realizing the transmission of the PBCH demodulation reference signal in the NR system.

Description

Transmission method, device, base station and terminal for demodulation reference signal
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a base station, and a terminal for transmitting a demodulation reference signal.
Background
In a 4G LTE (Long Term Evolution ) system, a PBCH (physical broadcast channel) is used to transmit important information of a cell, including a system bandwidth, a system frame number, and the like. The terminal can know basic system information through the PBCH and then prepare for accessing the network. The PBCH in LTE utilizes CRS (cell reference signal) for channel estimation and demodulation.
In 3GPP 5G NR (New Radio, New air interface) research, a physical broadcast channel is still an important subject. The NR PBCH is also used to convey important and basic information of the network, which may include beam scanning and other information in addition to system bandwidth, system frame number. The NR PBCH occupies 288 subcarriers of the frequency band, 2 time domain symbols, and in order to reduce the system power (especially the terminal power) consumption in the 5G system, there is no Cell Reference Signal (CRS) design, and the NR PBCH needs to design a dedicated demodulation reference signal, so a new transmission scheme of the dedicated demodulation reference signal of the NR PBCH needs to be designed.
Disclosure of Invention
The invention aims to provide a method, a device, a base station and a terminal for transmitting a demodulation reference signal, which are used for solving the problem of transmitting PBCH demodulation pilot frequency in an NR system.
In order to achieve the above object, the present invention provides a method for transmitting a demodulation reference signal, which is applied to a base station, and includes:
in target resources occupied by a new air interface NR physical broadcast channel PBCH, mapping a demodulation reference signal of the PBCH in a time division multiplexing and/or frequency division multiplexing mode;
and sending the target resource mapped with the demodulation reference signal of the PBCH to a terminal.
The step of mapping the demodulation reference signal of the PBCH in a time division multiplexing and/or frequency division multiplexing manner in the target resource occupied by the new air interface NR physical broadcast channel PBCH includes:
determining a first resource in target resources occupied by NR PBCH; the target resource corresponds to M subcarriers in a frequency domain, corresponds to L OFDM symbols in a time domain, and the first resource corresponds to N subcarriers in the frequency domain, and corresponds to L OFDM symbols in the time domain, wherein N is smaller than M, M is an integer multiple of N, and M, N and L are both positive integers;
in the first resource, mapping the demodulation reference signal of the PBCH in a time division multiplexing and/or frequency division multiplexing mode;
and expanding the demodulation reference signal in the first resource into a second resource in a preset mode, wherein the second resource is a resource except the first resource in the target resource.
Wherein, in the first resource, the step of mapping the demodulation reference signal of the PBCH in a frequency division multiplexing manner includes:
selecting a target OFDM symbol for mapping a demodulation reference signal of PBCH from the L OFDM symbols of the first resource;
and selecting at least one subcarrier from the N subcarriers of the target OFDM symbol to map the demodulation reference signal of the PBCH.
Wherein, in the first resource, the step of mapping the demodulation reference signal of the PBCH in a time division multiplexing manner includes:
and respectively selecting one subcarrier from the N subcarriers of each OFDM symbol of the first resource to map the demodulation reference signal of the PBCH.
The subcarriers occupied by the demodulation reference signals in the L OFDM symbols have the same or different frequency domain resources.
In the first resource, the step of mapping the demodulation reference signal of the PBCH in a time division multiplexing and frequency division multiplexing manner includes:
selecting a plurality of subcarriers from N subcarriers of each OFDM symbol of the first resource to map the demodulation reference signal of the PBCH; or
And selecting one subcarrier from the N subcarriers of the first OFDM symbol of the first resource to map the demodulation reference signal of the PBCH, and selecting a plurality of subcarriers from the N subcarriers of the second OFDM symbol of the first resource to map the demodulation reference signal of the PBCH.
In order to achieve the above object, an embodiment of the present invention further provides a transmission apparatus for demodulation reference signals, which is applied to a base station, and includes:
the mapping module is used for mapping the demodulation reference signal of the PBCH in a target resource occupied by the new air interface NR physical broadcast channel PBCH by adopting a time division multiplexing and/or frequency division multiplexing mode;
a transmission module, configured to send the target resource mapped with the demodulation reference signal of PBCH to a terminal.
Wherein the mapping module comprises:
a determining submodule, configured to determine a first resource in a target resource occupied by the NR PBCH; the target resource corresponds to M subcarriers in a frequency domain, corresponds to L OFDM symbols in a time domain, and the first resource corresponds to N subcarriers in the frequency domain, and corresponds to L OFDM symbols in the time domain, wherein N is smaller than M, M is an integer multiple of N, and M, N and L are both positive integers;
a mapping sub-module, configured to map, in the first resource, a demodulation reference signal of the PBCH in a time division multiplexing and/or frequency division multiplexing manner;
an extension module, configured to extend the demodulation reference signal in the first resource to a second resource in a preset manner, where the second resource is a resource other than the first resource in the target resource.
Wherein the determining sub-module includes:
a first selecting unit, configured to select a target OFDM symbol for mapping a demodulation reference signal of PBCH from the L OFDM symbols of the first resource;
a second selecting unit, configured to select at least one subcarrier from N subcarriers of the target OFDM symbol to map the demodulation reference signal of the PBCH.
Wherein the determining sub-module includes:
a third selecting unit, configured to select one subcarrier from N subcarriers of each OFDM symbol of the first resource to map the demodulation reference signal of the PBCH.
The subcarriers occupied by the demodulation reference signals in the L OFDM symbols have the same or different frequency domain resources.
The determining submodule is configured to select multiple subcarriers from N subcarriers of each OFDM symbol of the first resource to map a demodulation reference signal of the PBCH; or
The method includes selecting one subcarrier from N subcarriers of a first OFDM symbol of the first resource to map a demodulation reference signal of the PBCH, and selecting a plurality of subcarriers from N subcarriers of a second OFDM symbol of the first resource to map a demodulation reference signal of the PBCH.
In order to achieve the above object, an embodiment of the present invention further provides a base station, including a first memory, a first processor, and a computer program stored in the first memory and executable on the first processor, where the first processor implements the steps in the transmission method of demodulation reference signals as described above when executing the computer program.
In order to achieve the above object, an embodiment of the present invention further provides a method for transmitting a demodulation reference signal, which is applied to a terminal, and includes:
acquiring a demodulation reference signal of PBCH (physical broadcast channel) transmitted by a base station in a target resource occupied by an NR (physical broadcast channel) PBCH, wherein the demodulation reference signal is mapped in the target resource in a time division multiplexing and/or frequency division multiplexing mode;
and demodulating the PBCH according to the demodulation reference signal of the PBCH.
Wherein, the step of demodulating PBCH according to the demodulation reference signal of PBCH comprises:
and carrying out demodulation processing on the PBCH according to the demodulation reference signal and the synchronization signal sequence of the PBCH.
Wherein the synchronization signal sequence comprises: at least one of a primary synchronization signal PSS sequence, a secondary synchronization signal SSS sequence, and a TSS tertiary synchronization signal sequence.
In order to achieve the above object, an embodiment of the present invention further provides a transmission apparatus for a demodulation reference signal, which is applied to a terminal, and includes:
an obtaining module, configured to obtain, in a target resource occupied by a PBCH in an NR physical broadcast channel, a demodulation reference signal of the PBCH transmitted by a base station, where the demodulation reference signal is mapped in the target resource in a time division multiplexing and/or frequency division multiplexing manner;
and the demodulation module is used for demodulating the PBCH according to the demodulation reference signal of the PBCH.
The demodulation module is configured to demodulate the PBCH according to the demodulation reference signal and the synchronization signal sequence of the PBCH.
Wherein the synchronization signal sequence comprises: at least one of a primary synchronization signal PSS sequence, a secondary synchronization signal SSS sequence, and a TSS tertiary synchronization signal sequence.
In order to achieve the above object, an embodiment of the present invention further provides a terminal, including a second memory, a second processor, and a computer program stored on the second memory and executable on the second processor, where the second processor implements the steps in the transmission method of demodulation reference signals as described above when executing the computer program.
The embodiment of the invention has the following beneficial effects:
in the technical scheme of the embodiment of the invention, in the target resource occupied by the Physical Broadcast Channel (PBCH) of the NR, the demodulation reference signal of the PBCH is mapped by adopting a time division multiplexing and/or frequency division multiplexing mode; and sending the target resource mapped with the PBCH demodulation reference signal to the terminal, wherein the PBCH demodulation reference signal is sent to the terminal by the resource occupied by the new air interface NR physical broadcast channel PBCH, so that the transmission of the PBCH demodulation reference signal in the NR system is realized.
Drawings
Fig. 1 is a first flowchart of a method for transmitting a demodulation reference signal according to an embodiment of the present invention;
fig. 2 is a second flowchart of a method for transmitting a demodulation reference signal according to an embodiment of the present invention;
fig. 3a is a first mapping diagram illustrating that a PBCH demodulation reference signal is mapped in a frequency division multiplexing manner according to an embodiment of the present invention;
fig. 3b is a second mapping diagram illustrating that the PBCH demodulation reference signal is mapped in a frequency division multiplexing manner according to the embodiment of the present invention;
fig. 3c is a third mapping diagram illustrating that the PBCH demodulation reference signal is mapped in a frequency division multiplexing manner in the embodiment of the present invention;
fig. 4a is a first mapping diagram of mapping the PBCH demodulation reference signal in a time division multiplexing manner according to an embodiment of the present invention;
fig. 4b is a second mapping diagram illustrating that the PBCH demodulation reference signal is mapped in a time division multiplexing manner according to the embodiment of the present invention;
fig. 5a is a schematic diagram of a first mapping for mapping a demodulation reference signal of a PBCH in frequency division multiplexing and frequency division multiplexing manners according to an embodiment of the present invention;
fig. 5b is a second mapping diagram illustrating that the PBCH demodulation reference signal is mapped in frequency division multiplexing and frequency division multiplexing manners in the embodiment of the present invention;
fig. 5c is a third mapping diagram illustrating that the PBCH demodulation reference signal is mapped in frequency division multiplexing and frequency division multiplexing manners in the embodiment of the present invention;
fig. 6 is a third flowchart of a method for transmitting a demodulation reference signal according to an embodiment of the present invention;
fig. 7a is a schematic diagram illustrating positions of a demodulation reference signal and a primary synchronization signal in a transmission method of a demodulation reference signal according to an embodiment of the invention;
fig. 7b is a schematic diagram illustrating positions of a demodulation reference signal and a secondary synchronization signal in a transmission method of a demodulation reference signal according to an embodiment of the invention;
fig. 8 is a first block diagram of a base station according to an embodiment of the present invention;
fig. 9 is a second block diagram of a base station according to an embodiment of the present invention;
fig. 10 is a first structural block diagram of a terminal according to an embodiment of the present invention;
fig. 11 is a second structural block diagram of the terminal according to the embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings.
The embodiment of the invention provides a method, a device, a base station and a terminal for transmitting a demodulation reference signal, which solve the problem of transmitting PBCH demodulation pilot frequency in an NR system.
In some embodiments of the present invention, referring to fig. 1, a method for transmitting a demodulation reference signal is provided, including:
step 101: and mapping the demodulation reference signal of the PBCH in a target resource occupied by the NR physical broadcast channel PBCH by adopting a time division multiplexing and/or frequency division multiplexing mode.
Here, the target resource occupied by the NR physical broadcast channel PBCH is 288 subcarriers in the frequency domain and 2 OFDM symbols in the time domain. The demodulation reference signal of the PBCH is embedded in the resource occupied by the Physical Broadcast Channel (PBCH) of the NR by adopting a time division multiplexing and/or frequency division multiplexing mode, so that the pilot frequency density is not overlarge, the frequency offset efficiency of the NR PBCH is not greatly reduced, the compromise between the pilot frequency density and the frequency spectrum efficiency of the NR PBCH is realized, and the reliable transmission of the NR PBCH is further ensured.
Step 102: and sending the target resource mapped with the demodulation reference signal of the PBCH to a terminal.
Here, the target resource mapped with the PBCH demodulation reference signal is sent to the terminal, so that the terminal performs channel estimation on the PBCH according to the demodulation reference signal, thereby realizing reliable transmission of the physical broadcast channel.
In the method for transmitting the demodulation reference signal of the embodiment of the invention, the demodulation reference signal of the PBCH is mapped in a time division multiplexing and/or frequency division multiplexing mode in the target resource occupied by the Physical Broadcast Channel (PBCH) of the NR; and sending the target resource mapped with the PBCH demodulation reference signal to the terminal, wherein the PBCH demodulation reference signal is sent to the terminal by the resource occupied by the new air interface NR physical broadcast channel PBCH, so that the transmission of the PBCH demodulation reference signal in the NR system is realized.
In some embodiments of the present invention, as shown in fig. 2, there is provided a method for transmitting a demodulation reference signal, including:
step 201: determining a first resource in target resources occupied by NR PBCH; the target resource corresponds to M subcarriers in a frequency domain, corresponds to L OFDM symbols in a time domain, and the first resource corresponds to N subcarriers in the frequency domain, and corresponds to L OFDM symbols in the time domain, where N is smaller than M, M is an integer multiple of N, and M, N and L are both positive integers.
M, N are positive integers greater than 2, the target resource occupied by the NR physical broadcast channel PBCH is 288 subcarriers in the frequency domain, and 2 OFDM symbols in the time domain, i.e. M equals 288 and L equals 2. Preferably, the first resource corresponds to 12 subcarriers in a frequency domain and corresponds to 2 OFDM symbols in a time domain.
Step 202: and in the first resource, mapping the demodulation reference signal of the PBCH in a time division multiplexing and/or frequency division multiplexing mode.
Here, use is made of
Figure BDA0001286663520000071
Demodulation reference signal (DM-RS) representing NR PBCH, wherein i is the number of the DM-RS, and kiRepresenting number iFrequency domain subcarrier index, l, of demodulation reference signaliDenotes the time domain symbol index of the demodulation reference signal numbered i.
When the number of the demodulation reference signals of PBCH is m and m is more than or equal to 1 and less than or equal to 23, the set of the demodulation reference signals of NR PBCH is as follows: omega ═ Φm}
Wherein the content of the first and second substances,
Figure BDA0001286663520000072
i∈[1,m]；j∈[1,m]；i≠j；ki∈[1,12]；kj∈[1,12]；li∈[1,2]；lj∈[1,2]；(ki,li)≠(kj,lj)。
further, the number of the demodulation reference signals in the NR PBCH dedicated demodulation reference signal set is:
Figure BDA0001286663520000073
step 203: and expanding the demodulation reference signal in the first resource into a second resource in a preset mode, wherein the second resource is a resource except the first resource in the target resource.
In the embodiment of the present invention, a first resource is first selected from the target resources to perform PBCH demodulation reference signals, and then the PBCH demodulation reference signals are expanded to a second resource through the replication method, so that the mapping efficiency of the PBCH demodulation reference signals is improved.
Step 204: and sending the target resource mapped with the demodulation reference signal of the PBCH to a terminal.
Here, the target resource mapped with the PBCH demodulation reference signal is sent to the terminal, so that the terminal performs channel estimation on the PBCH according to the demodulation reference signal, thereby realizing reliable transmission of the physical broadcast channel.
Further, in step 201, the step of mapping the PBCH demodulation reference signal in the first resource in a frequency division multiplexing manner includes:
selecting a target OFDM symbol for mapping a demodulation reference signal of PBCH from the L OFDM symbols of the first resource; and selecting at least one subcarrier from the N subcarriers of the target OFDM symbol to map the demodulation reference signal of the PBCH.
Here, the target OFDM symbol is any one of L OFDM symbols, and all of N subcarriers may be selected for mapping the demodulation reference signal of the PBCH.
As shown in fig. 3a, in two OFDM symbols of the first resource, the first OFDM symbol is selected as a target OFDM symbol, and one subcarrier (7 th subcarrier) is selected to map a demodulation reference signal of PBCH.
As shown in fig. 3b, in two OFDM symbols of the first resource, the first OFDM symbol is selected as a target OFDM symbol, and two subcarriers (the first subcarrier and the 7 th subcarrier) are selected to map a demodulation reference signal of PBCH.
As shown in fig. 3c, in two OFDM symbols of the first resource, the first OFDM symbol is selected as a target OFDM symbol, and four subcarriers (the first subcarrier, the fourth subcarrier, the 7 th subcarrier, and the tenth subcarrier) are selected to map a demodulation reference signal of PBCH.
Further, in step 201, the step of mapping the PBCH demodulation reference signal in the first resource in a time division multiplexing manner includes:
and respectively selecting one subcarrier from the N subcarriers of each OFDM symbol of the first resource to map the demodulation reference signal of the PBCH.
Specifically, one subcarrier is selected from 12 subcarriers of each OFDM symbol of the first resource to map the demodulation reference signal of the PBCH. And the subcarriers occupied by the demodulation reference signals in the L OFDM symbols have the same or different frequency domain resources.
As shown in fig. 4a, in the first OFDM symbol and the second OFDM symbol of the first resource, the demodulation reference signal of PBCH mapped by the 7 th subcarrier is selected. At this time, the subcarriers occupied by the demodulation reference signals in the two OFDM symbols have the same frequency domain resource.
As shown in fig. 4b, the demodulation reference signal of PBCH mapped by 3 rd subcarrier is selected in the first OFDM symbol of the first resource, and the demodulation reference signal of PBCH mapped by 10 th subcarrier is selected in the second OFDM symbol of the first resource. At this time, the subcarriers occupied by the demodulation reference signals in the two OFDM symbols have different frequency domain resources.
Further, in step 201, the step of mapping the demodulation reference signal of the PBCH in the first resource in a time division multiplexing and frequency division multiplexing manner includes:
and selecting a plurality of subcarriers from the N subcarriers of each OFDM symbol of the first resource to map the demodulation reference signal of the PBCH. At this time, the demodulation reference signal of the PBCH is mapped by adopting a mode of combining time division multiplexing and frequency division multiplexing.
As shown in fig. 5a, two subcarriers (a third subcarrier and a tenth subcarrier) are selected from the subcarriers of the first OFDM symbol and the subcarriers of the second OFDM symbol of the first resource to map the demodulation reference signal of the PBCH, and at this time, the subcarriers occupied by the demodulation reference signals in the two OFDM symbols have the same frequency domain resource.
Alternatively, the first and second electrodes may be,
and selecting one subcarrier from the N subcarriers of the first OFDM symbol of the first resource to map the demodulation reference signal of the PBCH, and selecting a plurality of subcarriers from the N subcarriers of the second OFDM symbol of the first resource to map the demodulation reference signal of the PBCH.
Here, the first OFDM symbol is any one of L OFDM symbols, and the second OFDM symbol is a symbol other than the first OFDM symbol among the L OFDM symbols.
As shown in fig. 5b, two subcarriers (a third subcarrier and a tenth subcarrier) are selected from the subcarriers of the first OFDM symbol of the first resource to map the demodulation reference signal of the PBCH, and one subcarrier (a tenth subcarrier) is selected from the subcarriers of the second OFDM symbol of the first resource to map the demodulation reference signal of the PBCH, where the subcarriers occupied by the demodulation reference signals in the two OFDM symbols have different frequency domain resources.
As shown in fig. 5c, two subcarriers (a third subcarrier and a tenth subcarrier) are selected from the N subcarriers of the first OFDM symbol of the first resource to map the demodulation reference signal of the PBCH, and one subcarrier (a seventh subcarrier) is selected from the N subcarriers of the second OFDM symbol of the first resource to map the demodulation reference signal of the PBCH, where the subcarriers occupied by the demodulation reference signals in the two OFDM symbols have different frequency domain resources.
In summary, the demodulation reference signal of the PBCH is embedded into the resource occupied by the NR PBCH by using the time division multiplexing and/or frequency division multiplexing, so that the terminal can perform channel estimation by combining the frequency domain and the time domain, and can more accurately complete channel frequency offset and phase tracking, thereby improving the reliable transmission of the physical broadcast channel.
In the method for transmitting the demodulation reference signal of the embodiment of the invention, the demodulation reference signal of the PBCH is mapped in a time division multiplexing and/or frequency division multiplexing mode in the target resource occupied by the Physical Broadcast Channel (PBCH) of the NR; and sending the target resource mapped with the PBCH demodulation reference signal to the terminal, wherein the PBCH demodulation reference signal is sent to the terminal by the resource occupied by the new air interface NR physical broadcast channel PBCH, so that the transmission of the PBCH demodulation reference signal in the NR system is realized.
In some embodiments of the present invention, as shown in fig. 6, there is also provided a method for transmitting a demodulation reference signal, including:
step 601: in a target resource occupied by a Physical Broadcast Channel (PBCH) of the NR, a demodulation reference signal of the PBCH transmitted by a base station is acquired, and the demodulation reference signal is mapped in the target resource in a time division multiplexing and/or frequency division multiplexing mode.
In the embodiment of the invention, the base station embeds the demodulation reference signal of the PBCH into the resource occupied by the NR physical broadcast channel PBCH by adopting a time division multiplexing and/or frequency division multiplexing mode, and sends the resource mapped with the demodulation reference signal of the PBCH to the terminal, so that the terminal can carry out channel estimation by combining a frequency domain and a time domain, can more accurately complete channel frequency offset and phase tracking, and further improve the reliable transmission of the physical broadcast channel.
Step 602: and demodulating the PBCH according to the demodulation reference signal of the PBCH.
Further, the step may specifically include performing demodulation processing on the PBCH according to the demodulation reference signal and the synchronization signal sequence of the PBCH. The synchronization signal sequence includes, but is not limited to: at least one of a primary synchronization signal PSS sequence, a secondary synchronization signal SSS sequence, and a TSS tertiary synchronization signal sequence.
As shown in fig. 7a, the base station selects one subcarrier (the 7 th subcarrier) from the second OFDM symbol of the first resource to map the PBCH demodulation reference signal, and at this time, the terminal may demodulate the PBCH with the primary synchronization signal and the PBCH demodulation reference signal. As shown in fig. 7b, the base station selects one subcarrier (the 7 th subcarrier) from the first OFDM symbol of the first resource to map the PBCH demodulation reference signal, and at this time, the terminal may demodulate the PBCH with the secondary synchronization signal and the PBCH demodulation reference signal.
In the method for transmitting a demodulation reference signal of the embodiment of the invention, the demodulation reference signal of PBCH transmitted by a base station is acquired in a target resource occupied by a physical broadcast channel (NR PBCH); and demodulating the PBCH according to the demodulation reference signal of the PBCH, thereby improving the reliable transmission of the physical broadcast channel.
As shown in fig. 8, an embodiment of the present invention further provides a transmission apparatus for demodulation reference signals, which is applied to a base station, and includes:
a mapping module 801, configured to map, in a target resource occupied by a new air interface NR physical broadcast channel PBCH, a demodulation reference signal of the PBCH in a time division multiplexing and/or frequency division multiplexing manner;
a transmission module 802, configured to send the resource mapped with the PBCH demodulation reference signal to the terminal.
In the transmission apparatus for demodulation reference signals according to the embodiment of the present invention, the mapping module 801 includes:
a determining submodule, configured to determine a first resource in the total resources occupied by the NR PBCH; the total resource corresponds to M subcarriers in a frequency domain, corresponds to L OFDM symbols in a time domain, and the first resource corresponds to N subcarriers in the frequency domain, and corresponds to L OFDM symbols in the time domain, wherein N is smaller than M, M is an integer multiple of N, and M, N and L are both positive integers;
a mapping sub-module, configured to map, in the first resource, a demodulation reference signal of the PBCH in a time division multiplexing and/or frequency division multiplexing manner;
an extension module, configured to extend the demodulation reference signal in the first resource to a second resource in a preset manner, where the second resource is a resource other than the first resource in the total resources.
In the apparatus for transmitting demodulation reference signals according to the embodiment of the present invention, the determining sub-module includes:
a first selecting unit, configured to select a target OFDM symbol for mapping a demodulation reference signal of PBCH from the L OFDM symbols of the first resource;
a second selecting unit, configured to select at least one subcarrier from N subcarriers of the target OFDM symbol to map the demodulation reference signal of the PBCH.
In the apparatus for transmitting demodulation reference signals according to the embodiment of the present invention, the determining sub-module includes:
a third selecting unit, configured to select one subcarrier from N subcarriers of each OFDM symbol of the first resource to map the demodulation reference signal of the PBCH.
In the transmission apparatus for demodulation reference signals according to the embodiment of the present invention, subcarriers occupied by demodulation reference signals in the L OFDM symbols have the same or different frequency domain resources.
In the apparatus for transmitting a demodulation reference signal according to the embodiment of the present invention, the determining submodule is configured to select multiple subcarriers from N subcarriers of each OFDM symbol of the first resource to map the demodulation reference signal of the PBCH; or
The method includes selecting one subcarrier from N subcarriers of a first OFDM symbol of the first resource to map a demodulation reference signal of the PBCH, and selecting a plurality of subcarriers from N subcarriers of a second OFDM symbol of the first resource to map a demodulation reference signal of the PBCH.
In the transmission device for the demodulation reference signal of the embodiment of the invention, the demodulation reference signal of the PBCH is mapped in a time division multiplexing and/or frequency division multiplexing mode in the target resource occupied by the physical NR broadcast channel PBCH; and sending the target resource mapped with the PBCH demodulation reference signal to the terminal, wherein the PBCH demodulation reference signal is sent to the terminal by the resource occupied by the new air interface NR physical broadcast channel PBCH, so that the transmission of the PBCH demodulation reference signal in the NR system is realized.
It should be noted that the apparatus for transmitting a demodulation reference signal is an apparatus corresponding to the method for transmitting a demodulation reference signal, and all the implementation manners in the method embodiments are applicable to the embodiment of the apparatus, so that the same technical effects can be achieved.
In some embodiments of the present invention, as shown in fig. 9, there is also provided a base station, including a first memory 920, a first processor 900, a first transceiver 910, a bus interface, and a computer program stored on the first memory 920 and operable on the first processor 900, wherein the first processor 900 is configured to read the program in the first memory 920 and execute the following processes:
in target resources occupied by an NR physical broadcast channel PBCH, mapping a demodulation reference signal of the PBCH in a time division multiplexing and/or frequency division multiplexing mode; and sending the target resource mapped with the demodulation reference signal of the PBCH to a terminal.
Where in fig. 9 the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by the first processor 900 and various circuits of the memory represented by the first memory 920 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The first transceiver 910 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The first processor 900 is responsible for managing a bus architecture and general processing, and the first memory 920 may store data used by the first processor 900 when performing operations.
The first processor 900 is further configured to determine a first resource among target resources occupied by a NR physical broadcast channel, PBCH; the target resource corresponds to M subcarriers in a frequency domain, corresponds to L OFDM symbols in a time domain, and the first resource corresponds to N subcarriers in the frequency domain, and corresponds to L OFDM symbols in the time domain, wherein N is smaller than M, M is an integer multiple of N, and M, N and L are both positive integers; in the first resource, mapping the demodulation reference signal of the PBCH in a time division multiplexing and/or frequency division multiplexing mode; and expanding the demodulation reference signal in the first resource into a second resource in a preset mode, wherein the second resource is a resource except the first resource in the target resource.
The first processor 900 is further configured to select, from the L OFDM symbols of the first resource, a target OFDM symbol for mapping a demodulation reference signal of a PBCH; and selecting at least one subcarrier from the N subcarriers of the target OFDM symbol to map the demodulation reference signal of the PBCH.
The first processor 900 is further configured to select one subcarrier from the N subcarriers of each OFDM symbol of the first resource to map the demodulation reference signal of the PBCH.
The first processor 900 is further configured to select multiple subcarriers from N subcarriers of each OFDM symbol of the first resource to map the demodulation reference signal of the PBCH; or selecting one subcarrier from the N subcarriers of the first OFDM symbol of the first resource to map the demodulation reference signal of the PBCH, and selecting a plurality of subcarriers from the N subcarriers of the second OFDM symbol of the first resource to map the demodulation reference signal of the PBCH.
In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
in the resources occupied by the NR physical broadcast channel PBCH, in the target resources occupied by the NR physical broadcast channel PBCH, the demodulation reference signals of the PBCH are mapped by adopting a time division multiplexing and/or frequency division multiplexing mode; and sending the target resource mapped with the demodulation reference signal of the PBCH to a terminal.
In some embodiments of the present invention, as shown in fig. 10, there is also provided a transmission apparatus for demodulation reference signals, applied to a terminal, including:
an obtaining module 1001, configured to obtain, in a target resource occupied by a PBCH in an NR physical broadcast channel, a demodulation reference signal of the PBCH transmitted by a base station, where the demodulation reference signal is mapped in the target resource in a time division multiplexing and/or frequency division multiplexing manner;
a demodulating module 1002, configured to demodulate the PBCH according to the demodulation reference signal of the PBCH.
In the apparatus for transmitting a demodulation reference signal according to the embodiment of the present invention, the demodulation module 1002 is configured to demodulate the PBCH according to the demodulation reference signal and the synchronization signal sequence of the PBCH.
In the transmission apparatus for demodulation reference signals according to the embodiment of the present invention, the synchronization signal sequence includes: at least one of a primary synchronization signal PSS sequence, a secondary synchronization signal SSS sequence, and a TSS tertiary synchronization signal sequence.
According to the transmission device for the demodulation reference signals, the base station embeds the demodulation reference signals of the PBCH into target resources occupied by the PBCH of the NR physical broadcast channel in a time division multiplexing and/or frequency division multiplexing mode, and sends the resources mapped with the demodulation reference signals of the PBCH to the terminal, so that the terminal can carry out channel estimation through the combination of a frequency domain and a time domain, channel frequency offset and phase tracking can be completed more accurately, and reliable transmission of the physical broadcast channel is improved.
It should be noted that the apparatus for transmitting a demodulation reference signal is an apparatus corresponding to the method for transmitting a demodulation reference signal, and all the implementation manners in the method embodiments are applicable to the embodiment of the apparatus, so that the same technical effects can be achieved.
In some embodiments of the present invention, referring to fig. 11, there is also provided a terminal, including a second memory 1120, a second processor 1100, a second transceiver 1110, a user interface 1130, a bus interface, and a computer program stored on the second memory 1120 and operable on the second processor 1100, wherein the second processor 1100 is configured to read the program in the second memory 1120 and execute the following processes:
acquiring a demodulation reference signal of PBCH (physical broadcast channel) transmitted by a base station in a target resource occupied by an NR (physical broadcast channel) PBCH, wherein the demodulation reference signal is mapped in the target resource in a time division multiplexing and/or frequency division multiplexing mode; and demodulating the PBCH according to the demodulation reference signal of the PBCH.
Where in fig. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by the second processor 1100 and various circuits of memory represented by the second memory 1120 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The second transceiver 1110 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 1130 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The second processor 1100 is responsible for managing a bus architecture and general processing, and the second memory 1120 may store data used by the second processor 1100 in performing operations.
The second processor 1100 is further configured to perform demodulation processing on the PBCH according to the demodulation reference signal and the synchronization signal sequence of the PBCH.
In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
acquiring a demodulation reference signal of PBCH transmitted by a base station in a resource occupied by an NR physical broadcast channel PBCH, wherein the demodulation reference signal is mapped in the resource occupied by the NR physical broadcast channel in a time division multiplexing and/or frequency division multiplexing mode; and demodulating the PBCH according to the demodulation reference signal of the PBCH.
In various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (16)

1. A transmission method of demodulation reference signals is applied to a base station, and is characterized by comprising the following steps:
in target resources occupied by a new air interface NR physical broadcast channel PBCH, mapping a demodulation reference signal of the PBCH in a time division multiplexing and/or frequency division multiplexing mode;
sending the target resource mapped with the demodulation reference signal of PBCH to a terminal;
the step of mapping the demodulation reference signal of the PBCH in a time division multiplexing and/or frequency division multiplexing manner in the target resource occupied by the new air interface NR physical broadcast channel PBCH includes:
determining a first resource in target resources occupied by NR PBCH; the target resource corresponds to M subcarriers in a frequency domain, corresponds to L OFDM symbols in a time domain, and the first resource corresponds to N subcarriers in the frequency domain, and corresponds to L OFDM symbols in the time domain, wherein N is smaller than M, M is an integer multiple of N, and M, N and L are both positive integers;
in the first resource, mapping the demodulation reference signal of the PBCH in a time division multiplexing and/or frequency division multiplexing mode;
expanding the demodulation reference signal in the first resource into a second resource in a preset mode, wherein the second resource is a resource except the first resource in the target resource;
a demodulation reference signal of the PBCH is mapped on one or each OFDM symbol in the L OFDM symbols;
if the demodulation reference signal of the PBCH is mapped on each OFDM symbol of the L OFDM symbols, the subcarriers occupied by the demodulation reference signal in the L OFDM symbols have different frequency domain resources.
2. The method according to claim 1, wherein the step of mapping the demodulation reference signals of the PBCH in the first resource in a frequency division multiplexing manner comprises:
selecting a target OFDM symbol for mapping a demodulation reference signal of PBCH from the L OFDM symbols of the first resource;
and selecting at least one subcarrier from the N subcarriers of the target OFDM symbol to map the demodulation reference signal of the PBCH.
3. The method according to claim 1, wherein the step of mapping the demodulation reference signals of the PBCH in the first resource in a time division multiplexing manner comprises:
and respectively selecting one subcarrier from the N subcarriers of each OFDM symbol of the first resource to map the demodulation reference signal of the PBCH.
4. The method according to claim 1, wherein the step of mapping the demodulation reference signals of the PBCH in the first resource by time division multiplexing and frequency division multiplexing comprises:
selecting a plurality of subcarriers from N subcarriers of each OFDM symbol of the first resource to map the demodulation reference signal of the PBCH; or
And selecting one subcarrier from the N subcarriers of the first OFDM symbol of the first resource to map the demodulation reference signal of the PBCH, and selecting a plurality of subcarriers from the N subcarriers of the second OFDM symbol of the first resource to map the demodulation reference signal of the PBCH.
5. A transmission apparatus for demodulation reference signals, applied to a base station, comprising:
the mapping module is used for mapping the demodulation reference signal of the PBCH in a target resource occupied by the new air interface NR physical broadcast channel PBCH by adopting a time division multiplexing and/or frequency division multiplexing mode;
a transmission module, configured to send the target resource mapped with the demodulation reference signal of PBCH to a terminal;
wherein the mapping module comprises:
a determining submodule, configured to determine a first resource in a target resource occupied by the NR PBCH; the target resource corresponds to M subcarriers in a frequency domain, corresponds to L OFDM symbols in a time domain, and the first resource corresponds to N subcarriers in the frequency domain, and corresponds to L OFDM symbols in the time domain, wherein N is smaller than M, M is an integer multiple of N, and M, N and L are both positive integers;
a mapping sub-module, configured to map, in the first resource, a demodulation reference signal of the PBCH in a time division multiplexing and/or frequency division multiplexing manner;
an extension module, configured to extend the demodulation reference signal in the first resource to a second resource in a preset manner, where the second resource is a resource other than the first resource in the target resource;
a demodulation reference signal of the PBCH is mapped on one or each OFDM symbol in the L OFDM symbols;
if the demodulation reference signal of the PBCH is mapped on each OFDM symbol of the L OFDM symbols, the subcarriers occupied by the demodulation reference signal in the L OFDM symbols have different frequency domain resources.
6. The transmission apparatus of claim 5, wherein the determination submodule comprises:
a first selecting unit, configured to select a target OFDM symbol for mapping a demodulation reference signal of PBCH from the L OFDM symbols of the first resource;
a second selecting unit, configured to select at least one subcarrier from N subcarriers of the target OFDM symbol to map the demodulation reference signal of the PBCH.
7. The transmission apparatus of claim 5, wherein the determination submodule comprises:
a third selecting unit, configured to select one subcarrier from N subcarriers of each OFDM symbol of the first resource to map the demodulation reference signal of the PBCH.
8. The transmission apparatus according to claim 5, wherein the determining sub-module is configured to select multiple sub-carriers from the N sub-carriers of each OFDM symbol of the first resource to map the demodulation reference signal of the PBCH; or
The method includes selecting one subcarrier from N subcarriers of a first OFDM symbol of the first resource to map a demodulation reference signal of the PBCH, and selecting a plurality of subcarriers from N subcarriers of a second OFDM symbol of the first resource to map a demodulation reference signal of the PBCH.
9. A base station comprising a first memory, a first processor and a computer program stored on the first memory and executable on the first processor, wherein the first processor implements the steps in the method for transmitting a demodulation reference signal according to any one of claims 1 to 4 when executing the computer program.
10. A transmission method of demodulation reference signals is applied to a terminal, and is characterized by comprising the following steps:
acquiring a demodulation reference signal of PBCH (physical broadcast channel) transmitted by a base station in a target resource occupied by an NR (physical broadcast channel) PBCH, wherein the demodulation reference signal is mapped in the target resource in a time division multiplexing and/or frequency division multiplexing mode;
carrying out demodulation processing on PBCH according to the demodulation reference signal of the PBCH;
the demodulation reference signal is located on a first resource in the target resources and is extended to a second resource in a preset mode; the target resource corresponds to M subcarriers in a frequency domain, corresponds to L OFDM symbols in a time domain, the first resource corresponds to N subcarriers in the frequency domain, corresponds to L OFDM symbols in the time domain, N is smaller than M, M is an integral multiple of N, M, N and L are positive integers, and the second resource is a resource except the first resource in the target resource;
a demodulation reference signal of the PBCH is mapped on one or each OFDM symbol in the L OFDM symbols;
if the demodulation reference signal of the PBCH is mapped on each OFDM symbol of the L OFDM symbols, the subcarriers occupied by the demodulation reference signal in the L OFDM symbols have different frequency domain resources.
11. The method of claim 10, wherein the step of demodulating PBCH according to the PBCH demodulation reference signal comprises:
and carrying out demodulation processing on the PBCH according to the demodulation reference signal and the synchronization signal sequence of the PBCH.
12. The method according to claim 11, wherein the synchronization signal sequence comprises: at least one of a primary synchronization signal PSS sequence, a secondary synchronization signal SSS sequence, and a TSS tertiary synchronization signal sequence.
13. A transmission apparatus for demodulation reference signals, applied to a terminal, comprising:
an obtaining module, configured to obtain, in a target resource occupied by a PBCH in an NR physical broadcast channel, a demodulation reference signal of the PBCH transmitted by a base station, where the demodulation reference signal is mapped in the target resource in a time division multiplexing and/or frequency division multiplexing manner;
a demodulation module, configured to perform demodulation processing on the PBCH according to the demodulation reference signal of the PBCH;
the demodulation reference signal is located on a first resource in the target resources and is extended to a second resource in a preset mode; the target resource corresponds to M subcarriers in a frequency domain, corresponds to L OFDM symbols in a time domain, the first resource corresponds to N subcarriers in the frequency domain, corresponds to L OFDM symbols in the time domain, N is smaller than M, M is an integral multiple of N, M, N and L are positive integers, and the second resource is a resource except the first resource in the target resource;
a demodulation reference signal of the PBCH is mapped on one or each OFDM symbol in the L OFDM symbols;
if the demodulation reference signal of the PBCH is mapped on each OFDM symbol of the L OFDM symbols, the subcarriers occupied by the demodulation reference signal in the L OFDM symbols have different frequency domain resources.
14. The transmission apparatus of claim 13, wherein the demodulation module is configured to demodulate the PBCH according to the demodulation reference signal and the synchronization signal sequence of the PBCH.
15. The transmission apparatus of claim 14, wherein the synchronization signal sequence comprises: at least one of a primary synchronization signal PSS sequence, a secondary synchronization signal SSS sequence, and a TSS tertiary synchronization signal sequence.
16. A terminal comprising a second memory, a second processor and a computer program stored on the second memory and executable on the second processor, wherein the second processor implements the steps in the method for transmitting a demodulation reference signal according to any one of claims 10 to 12 when executing the computer program.
CN201710309296.9A 2017-05-04 2017-05-04 Transmission method, device, base station and terminal for demodulation reference signal Active CN108809877B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710309296.9A CN108809877B (en) 2017-05-04 2017-05-04 Transmission method, device, base station and terminal for demodulation reference signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710309296.9A CN108809877B (en) 2017-05-04 2017-05-04 Transmission method, device, base station and terminal for demodulation reference signal

Publications (2)

Publication Number Publication Date
CN108809877A CN108809877A (en) 2018-11-13
CN108809877B true CN108809877B (en) 2020-11-10

Family

ID=64054774

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710309296.9A Active CN108809877B (en) 2017-05-04 2017-05-04 Transmission method, device, base station and terminal for demodulation reference signal

Country Status (1)

Country Link
CN (1) CN108809877B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200228299A1 (en) * 2019-01-11 2020-07-16 Mediatek Inc. Ue multiplexing for dmrs transmission
CN112511987B (en) * 2020-03-05 2024-04-26 中兴通讯股份有限公司 Wireless transmission method and device, information determination method and device and electronic equipment
WO2021229258A1 (en) * 2020-05-14 2021-11-18 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Method of ssb design
CN111817834B (en) * 2020-05-14 2023-06-09 北京中电飞华通信有限公司 Wireless communication system and time domain and frequency domain resource multiplexing method thereof
CN114760177B (en) * 2022-03-22 2024-02-13 佰路威科技(北京)有限公司 Data receiving method in multipoint-to-point system and related equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103906139A (en) * 2012-12-27 2014-07-02 夏普株式会社 System information sending and receiving method, base station and user equipment
CN104662815A (en) * 2012-09-18 2015-05-27 Lg电子株式会社 Method and apparatus for receiving system information in wireless communication system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104662815A (en) * 2012-09-18 2015-05-27 Lg电子株式会社 Method and apparatus for receiving system information in wireless communication system
CN103906139A (en) * 2012-12-27 2014-07-02 夏普株式会社 System information sending and receiving method, base station and user equipment

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Discussion and evaluation on NR-PBCH design;NTT DOCOMO, INC.;《3GPP TSG RAN WG1 Meeting #88bis R1-1705708》;20170407;全文 *
NR-PBCH design;Fujitsu;《3GPP TSG RAN WG1 Meeting#89 R1-1707253》;20170419;第1页-第9页 *

Also Published As

Publication number Publication date
CN108809877A (en) 2018-11-13

Similar Documents

Publication Publication Date Title
CN108809877B (en) Transmission method, device, base station and terminal for demodulation reference signal
CN109152013B (en) Signal transmission method of public downlink control channel and related equipment
WO2019196666A1 (en) Method and device for transmitting positioning reference signal
WO2020164617A1 (en) Signal sending method, signal receiving method, network device and terminal
KR20200007913A (en) Method and device for communication
CN111726877B (en) Data transmission method, terminal and base station
CN109150472B (en) Sending method and receiving method of demodulation reference signal, terminal and network side equipment
JP7130737B2 (en) Reference signal transmission method, device, base station and terminal
WO2018120833A1 (en) Method for transmitting synchronous access signal block, network-side device, and user terminal
CN108809554B (en) Resource mapping method of demodulation reference signal and base station
US20210218525A1 (en) Communication method and communications apparatus
CN108289069B (en) Transmission method, sending end and receiving end of reference signal
CN108075868B (en) Demodulation reference signal DMRS parameter configuration method, network side equipment and terminal
CN111867038A (en) Communication method and device
WO2018223891A1 (en) Reference signal transmission method, apparatus and device
WO2018130093A1 (en) Method for transmitting synchronization access signal group, method for receiving synchronization access signal group, related devices, and system
CN107733617B (en) Reference signal mapping method and device
US20190305902A1 (en) Reference signal transmission method and apparatus
WO2022022521A1 (en) Phase noise estimation method and apparatus
CN112511285B (en) Signal processing method and device based on sequence
US20220385426A1 (en) Sequence mapping method and apparatus for common reference signal, storage medium, and terminal
KR20190121112A (en) The method and apparatus for improving synchronization
WO2018095068A1 (en) Method, device and system for transmitting synchronization access signal group
CN113301649A (en) Transmission method, device, equipment and computer readable storage medium
CN111586848A (en) Scheduling time sequence determination method, terminal and network side equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP01 Change in the name or title of a patent holder

Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road

Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road

Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

CP01 Change in the name or title of a patent holder
TR01 Transfer of patent right

Effective date of registration: 20210615

Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing

Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd.

Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road

Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

TR01 Transfer of patent right