WO2019047845A1 - 一种参考信号的传输方法、装置、基站及终端 - Google Patents

一种参考信号的传输方法、装置、基站及终端 Download PDF

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Publication number
WO2019047845A1
WO2019047845A1 PCT/CN2018/104118 CN2018104118W WO2019047845A1 WO 2019047845 A1 WO2019047845 A1 WO 2019047845A1 CN 2018104118 W CN2018104118 W CN 2018104118W WO 2019047845 A1 WO2019047845 A1 WO 2019047845A1
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WIPO (PCT)
Prior art keywords
subcarrier
target
port
dmrs
dmrs port
Prior art date
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PCT/CN2018/104118
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English (en)
French (fr)
Inventor
李辉
高秋彬
塔玛拉卡⋅拉盖施
陈润华
苏昕
缪德山
黄秋萍
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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Application filed by China Academy of Telecommunications Technology CATT filed Critical China Academy of Telecommunications Technology CATT
Priority to KR1020237013067A priority Critical patent/KR102808241B1/ko
Priority to KR1020227009313A priority patent/KR20220042479A/ko
Priority to KR1020207008387A priority patent/KR20200039006A/ko
Priority to EP23162387.7A priority patent/EP4221049A1/en
Priority to JP2020514171A priority patent/JP7130737B2/ja
Priority to US16/645,413 priority patent/US11463219B2/en
Priority to EP18854508.1A priority patent/EP3681080B1/en
Publication of WO2019047845A1 publication Critical patent/WO2019047845A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0014Three-dimensional division
    • H04L5/0023Time-frequency-space
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094Indication of how sub-channels of the path are allocated
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/0035Synchronisation arrangements detecting errors in frequency or phase

Definitions

  • the present disclosure relates to the technical field of communication applications, and in particular, to a method, an apparatus, a base station, and a terminal for transmitting a reference signal.
  • Phase noise comes from the local oscillator in the transmitter and receiver, which will affect the transmission of multi-carrier signals, especially in the high frequency band (above 6GHz), the phase noise will be more serious, and the phase noise of the received signal is needed. Compensation to ensure system performance.
  • PTRS phase tracking reference signal
  • the PTRS is transmitted in the frequency band scheduled by the user, and according to its frequency domain density, each resource block (PRB) can be mapped once every 2 PRBs or every 4 PRBs, and In a PRB in which PTRS is present, each PTRS port is mapped to one subcarrier.
  • Each PTRS port corresponds to a set of demodulation reference signal (DMRS) ports, hereinafter referred to as group correspondence.
  • DMRS demodulation reference signal
  • PTRS Similar to DMRS, PTRS also needs to be precoded for transmission. To compensate for the effects of phase noise, the precoding used by the PTRS is related to the precoding used by a set of DMRS ports corresponding to this PT-RS port. At the same time, in order to ensure the compensation accuracy, the PTRS should be mapped on the subcarrier where the corresponding DMRS port group is located.
  • a pre-defined PTRS port uses a precoding used by a fixed DMRS port of a DMRS port group corresponding thereto, and is mapped to a subcarrier where the DMRS port is located, which is hereinafter referred to as a port correspondence.
  • This fixed DMRS port can be the smallest DMRS port in the group.
  • An object of the present disclosure is to provide a method, an apparatus, a base station, and a terminal for transmitting a reference signal, which are used to solve the problem that the PTRS port is mapped to the subcarrier where the DMRS port corresponding to the port is located, and there is no corresponding solution. .
  • the present disclosure provides a method for transmitting a reference signal, which is applied to a base station, including:
  • the location information of the target subcarrier for mapping the target phase tracking reference signal PTRS port is indicated to the terminal, and the target DMRS port is targeted.
  • DMRS port corresponding to the PTRS port is targeted.
  • the method for transmitting the reference signal further includes:
  • the position information of the target subcarrier for mapping the target phase tracking reference signal PTRS port is indicated to the terminal in the subcarrier occupied by the DMRS port of the target demodulation reference signal by an explicit manner, including:
  • the location information includes: offset information of the preset reference subcarrier corresponding to the target DMRS port and the target subcarrier.
  • the step of indicating the location information of the target subcarrier of the target phase tracking reference signal PTRS port to the terminal in the subcarrier occupied by the target demodulation reference signal DMRS port includes:
  • the location information of the target subcarrier used for mapping the target phase tracking reference signal PTRS port is indicated to the terminal in the subcarrier occupied by the DMRS port of the target demodulation reference signal by an implicit manner, including:
  • the location information is indicated to the terminal by a protocol agreement
  • the location information includes: a location of a subcarrier used to map the PTRS port in each subcarrier occupied by the DMRS port; or a subcarrier used to map the PTRS port in the subcarrier occupied by each DMRS port and the DMRS Offset information of the preset reference subcarrier corresponding to the port.
  • Each of the DMRS ports is a port in a preset DMRS port group
  • the DMRS ports in the same preset DMRS port group occupy the same subcarriers, and the DMRS ports in different preset DMRS port groups occupy different subcarriers.
  • an embodiment of the present disclosure further provides a method for transmitting a reference signal, which is applied to a terminal, including:
  • the target subcarrier is a subcarrier used by the target demodulation reference signal DMRS port, and is used to map the target phase tracking reference signal PTRS port Carrier
  • the target DMRS port is the DMRS port corresponding to the target PTRS port
  • a target subcarrier is determined based on the location information.
  • the method for transmitting the reference signal further includes:
  • a PTRS is acquired on the target subcarrier, and phase noise estimation is performed according to the PTRS.
  • the step of determining a target subcarrier according to the location information includes:
  • the acquiring location information of the target subcarrier indicated by the base station in an explicit manner includes:
  • the location information includes: offset information of the preset reference subcarrier corresponding to the target DMRS port and the target subcarrier.
  • the acquiring location information of the target subcarrier indicated by the base station in an implicit manner includes:
  • the location information includes: a location of a subcarrier used to map the PTRS port in each subcarrier occupied by the DMRS port; or a subcarrier used to map the PTRS port in the subcarrier occupied by each DMRS port and the DMRS Offset information of the preset reference subcarrier corresponding to the port.
  • Each of the DMRS ports is a port in a preset DMRS port group
  • the DMRS ports in the same preset DMRS port group occupy the same subcarriers, and the DMRS ports in different preset DMRS port groups occupy different subcarriers.
  • an embodiment of the present disclosure further provides a base station, including: a transceiver, a memory, a processor, and a computer program stored on the memory and operable on the processor, the processor executing the computer program The following steps are implemented:
  • the location information of the target subcarrier for mapping the target phase tracking reference signal PTRS port is indicated to the terminal, and the target DMRS port is targeted.
  • DMRS port corresponding to the PTRS port is targeted.
  • the location information includes: offset information of the preset reference subcarrier corresponding to the target DMRS port and the target subcarrier.
  • the location information is indicated to the terminal by a protocol agreement
  • the location information includes: a location of a subcarrier used to map the PTRS port in each subcarrier occupied by the DMRS port; or a subcarrier used to map the PTRS port in the subcarrier occupied by each DMRS port and the DMRS Offset information of the preset reference subcarrier corresponding to the port.
  • Each of the DMRS ports is a port in a preset DMRS port group
  • the DMRS ports in the same preset DMRS port group occupy the same subcarriers, and the DMRS ports in different preset DMRS port groups occupy different subcarriers.
  • an embodiment of the present disclosure further provides a computer readable storage medium having stored thereon a computer program, which when executed by a processor, implements the following steps:
  • the location information of the target subcarrier for mapping the target phase tracking reference signal PTRS port is indicated to the terminal, and the target DMRS port is targeted.
  • DMRS port corresponding to the PTRS port is targeted.
  • an embodiment of the present disclosure further provides a terminal, including: a transceiver, a memory, a processor, and a computer program stored on the memory and operable on the processor, the processor executing the computer program
  • a terminal including: a transceiver, a memory, a processor, and a computer program stored on the memory and operable on the processor, the processor executing the computer program
  • the target subcarrier is a subcarrier used by the target demodulation reference signal DMRS port, and is used to map the target phase tracking reference signal PTRS port Carrier
  • the target DMRS port is the DMRS port corresponding to the target PTRS port
  • a target subcarrier is determined based on the location information.
  • a PTRS is acquired on the target subcarrier, and phase noise estimation is performed according to the PTRS.
  • the location information includes: offset information of the preset reference subcarrier corresponding to the target DMRS port and the target subcarrier.
  • the location information includes: a location of a subcarrier used to map the PTRS port in each subcarrier occupied by the DMRS port; or a subcarrier used to map the PTRS port in the subcarrier occupied by each DMRS port and the DMRS Offset information of the preset reference subcarrier corresponding to the port.
  • Each of the DMRS ports is a port in a preset DMRS port group
  • the DMRS ports in the same preset DMRS port group occupy the same subcarriers, and the DMRS ports in different preset DMRS port groups occupy different subcarriers.
  • an embodiment of the present disclosure further provides a computer readable storage medium having stored thereon a computer program, which when executed by a processor, implements the following steps:
  • the target subcarrier is a subcarrier used by the target demodulation reference signal DMRS port, and is used to map the target phase tracking reference signal PTRS port Carrier
  • the target DMRS port is the DMRS port corresponding to the target PTRS port
  • a target subcarrier is determined based on the location information.
  • an embodiment of the present disclosure further provides a reference signal transmission apparatus, which is applied to a base station, and includes:
  • an indication module configured to indicate to the terminal, by using an implicit or explicit manner, the location information of the target subcarrier used for mapping the target phase tracking reference signal PTRS port in the subcarrier occupied by the target demodulation reference signal DMRS port,
  • the target DMRS port is the DMRS port corresponding to the target PTRS port.
  • the indication module includes:
  • a first indicator submodule configured to send the location information to the terminal by using signaling
  • the location information includes: offset information of the preset reference subcarrier corresponding to the target DMRS port and the target subcarrier.
  • the indication module includes:
  • a second indicator submodule configured to indicate the location information to the terminal by using a protocol
  • the location information includes: a location of a subcarrier used to map the PTRS port in each subcarrier occupied by the DMRS port; or a subcarrier used to map the PTRS port in the subcarrier occupied by each DMRS port and the DMRS Offset information of the preset reference subcarrier corresponding to the port.
  • Each of the DMRS ports is a port in a preset DMRS port group
  • the DMRS ports in the same preset DMRS port group occupy the same subcarriers, and the DMRS ports in different preset DMRS port groups occupy different subcarriers.
  • an embodiment of the present disclosure further provides a reference signal transmission apparatus, which is applied to a terminal, and includes:
  • An acquiring module configured to acquire location information of a target subcarrier indicated by the base station in an implicit or explicit manner, where the target subcarrier is a subcarrier occupied by a target demodulation reference signal DMRS port, and is used to map a target phase tracking reference.
  • the subcarrier of the signal PTRS port, and the target DMRS port is the DMRS port corresponding to the target PTRS port;
  • a determining module configured to determine the target subcarrier according to the location information.
  • the obtaining module includes:
  • a first acquiring submodule configured to acquire location information that is sent by the base station by using signaling
  • the location information includes: offset information of the preset reference subcarrier corresponding to the target DMRS port and the target subcarrier.
  • the obtaining module includes:
  • a second obtaining submodule configured to acquire location information of the target subcarrier by using a protocol agreement
  • the location information includes: a location of a subcarrier used to map the PTRS port in each subcarrier occupied by the DMRS port; or a subcarrier used to map the PTRS port in the subcarrier occupied by each DMRS port and the DMRS Offset information of the preset reference subcarrier corresponding to the port.
  • Each of the DMRS ports is a port in a preset DMRS port group
  • the DMRS ports in the same preset DMRS port group occupy the same subcarriers, and the DMRS ports in different preset DMRS port groups occupy different subcarriers.
  • the location information of the target subcarrier for mapping the target phase tracking reference signal PTRS port is used in the subcarrier occupied by the target demodulation reference signal DMRS port in an implicit or explicit manner. Instructing the terminal to determine the target subcarrier according to the location information, and then acquiring the PTRS transmitted by the base station on the target subcarrier, achieving the purpose of performing PTRS transmission according to the location information, and avoiding mapping of different PTRS ports to On the same subcarrier, the orthogonality between different PTRS ports is effectively guaranteed.
  • FIG. 1 is a first working flowchart of a method for transmitting a reference signal according to an embodiment of the present disclosure
  • FIG. 2a is a schematic diagram of a first configuration of a DMRS according to an embodiment of the present disclosure
  • FIG. 2b is a schematic diagram of a second configuration of a DMRS according to an embodiment of the present disclosure
  • 2c is a schematic diagram of a third configuration of a DMRS according to an embodiment of the present disclosure.
  • 2d is a schematic diagram of a fourth configuration of a DMRS according to an embodiment of the present disclosure.
  • FIG. 3 is a second working flowchart of a method for transmitting a reference signal according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a first mapping of a PTRS according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a second mapping of a PTRS according to an embodiment of the present disclosure
  • FIG. 6 is a structural block diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of a first module of a base station according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of a second module of a base station according to an embodiment of the present disclosure.
  • FIG. 9 is a structural block diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of a first module of a terminal according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic diagram of a second module of a terminal according to an embodiment of the present disclosure.
  • Embodiments of the present disclosure provide a method, an apparatus, a base station, and a terminal for transmitting a reference signal, which solves the problem that how a PTRS port is mapped to a subcarrier on which a DMRS port corresponding to a port is located, and there is no corresponding solution at present. .
  • an embodiment of the present disclosure provides a method for transmitting a reference signal, which is applied to a base station, and includes:
  • Step S101 In an implicit or explicit manner, the location information of the target subcarrier used for mapping the target phase tracking reference signal PTRS port in the subcarrier occupied by the target demodulation reference signal DMRS port is indicated to the terminal, and the target DMRS The port is the DMRS port corresponding to the target PTRS port.
  • each PTRS port corresponds to a group of DMRS ports
  • each PTRS port corresponds to a preset DMRS port in the group of DMRS ports, such as a DMRS port with the smallest port number in the group of DMRS ports. correspond.
  • the location information includes: offset information of the preset reference subcarrier corresponding to the target DMRS port and the target subcarrier, a location of a subcarrier used to map the PTRS port in each subcarrier occupied by the DMRS port, or Offset information of a preset reference subcarrier corresponding to the DMRS port of the subcarrier used by each DMRS port.
  • the target PTRS port is a PTRS port that currently needs to perform subcarrier mapping.
  • the location information of the target subcarrier used for mapping the target PTRS port is indicated to the terminal by using the target DMRS port, so that the terminal can determine the target subcarrier according to the location information, and can ensure different PTRS ports. Orthogonality.
  • the method further includes:
  • the base station indicates the location information of the target subcarrier to the terminal, and maps the PTRS on the target subcarrier to the terminal.
  • the location information of the target subcarrier used for mapping the target phase tracking reference signal PTRS port is indicated to the terminal in the subcarrier occupied by the target demodulation reference signal DMRS port in an explicit manner.
  • the location information includes: offset information of the preset reference subcarrier corresponding to the target DMRS port and the target subcarrier.
  • the preset reference subcarriers herein are subcarriers that are predefined by the communication system and are well known to the base station and the terminal. Specifically, the Sth subcarrier occupied by each DMRS port is defined as a preset reference subcarrier according to the order of subcarriers in one PRB.
  • the method further includes:
  • the offset information may be specifically frequency offset information, subcarrier offset information, and/or PRB offset information.
  • the base station first determines, according to the correspondence between the preset PTRS port and the DMRS port group, the DMRS port group corresponding to each PTRS port configured by the base station, and determines, according to the system agreement, the PTRS port group and the PTRS.
  • the DMRS port corresponding to the port Then, the base station selects a target subcarrier for mapping the PTRS port in the target DMRS port corresponding to the target PTRS, and then determines offset information of the target subcarrier and the preset reference subcarrier.
  • the system pre-defines that the S-th sub-carrier occupied by each DMRS port in one PRB is a preset reference sub-carrier.
  • This preset reference subcarrier is well known to the base station and the terminal.
  • the base station determines the DMRS port corresponding to the PTRS port, and determines the value of the subcarrier offset S_offset of the PTRS port.
  • the value of this S_offset can be a positive integer, zero or a negative integer.
  • the base station informs the terminal by sub-carrier offset S_offset of each PTRS port, and simultaneously maps the PTRS of each port to the sub-carriers jointly determined by S and S_offset in the PRB including the PTRS.
  • the system pre-defines the preset reference sub-carrier, determines the position of each PTRS port in the sub-carrier where the corresponding DMRS port is located, and determines the sub-carrier and the preset reference for mapping the PTRS port.
  • the offset information of the subcarrier is transmitted to the terminal by signaling, and the purpose of mapping the PTRS port to the subcarrier where the DMRS port corresponding thereto is located is implemented, and orthogonality between different PTRS ports can be ensured. Sex.
  • the location information of the target subcarrier for mapping the target phase tracking reference signal PTRS port is indicated to the terminal in the subcarrier occupied by the target demodulation reference signal DMRS port in an implicit manner.
  • the location information is indicated to the terminal by a protocol agreement
  • the location information includes: a location of a subcarrier used to map the PTRS port in each subcarrier occupied by the DMRS port; or a subcarrier used to map the PTRS port in the subcarrier occupied by each DMRS port and the DMRS Offset information of the preset reference subcarrier corresponding to the port.
  • each of the DMRS ports is a port in a preset DMRS port group
  • the DMRS ports in the same preset DMRS port group occupy the same subcarriers, and the DMRS ports in different preset DMRS port groups occupy different subcarriers.
  • the subcarriers used to map the PTRS port in different DMRS ports of the same preset DMRS port group are different.
  • the configuration of the DMRS includes two configuration types, and each configuration type includes two orthogonal frequency division multiplexing OFDM symbols and two OFDM symbols, and configuration type 1 is as shown in FIG. 2a. As shown in Figure 2b, configuration type 2 is shown in Figures 2c and 2d.
  • the maximum number of DMRS ports it supports is divided into multiple DMRS port groups, referred to as subcarrier-based DMRS port groups (preset DMRS port groups).
  • the DMRS port in each DMRS port group based on the subcarrier location occupies the same subcarrier, and the DMRS port in the different DMRS port group based on the subcarrier location occupies different subcarriers.
  • each DMRS port group based on subcarrier location the system pre-defines the location of the subcarriers used to map the PTRS port among the subcarriers occupied by each DMRS port, or is used in the subcarrier occupied by each DMRS port. And mapping offset information of the sub-carrier of the PTRS port and the preset reference sub-carrier corresponding to the DMRS port. System-defined information is known to base stations and terminals. For different subcarrier-based DMRS port groups, the offset information of the subcarriers used to map the PTRS port may be the same or different.
  • Each PTRS port configured by the base station determines a DMRS port corresponding thereto by the base station, and determines a subcarrier mapped by the PTRS port according to the predefined location information, and sends the PTRS to the terminal.
  • the method for transmitting a reference signal indicates that the location information is indicated to the terminal by using a protocol, and performs PTRS transmission according to the location information, and can prevent different PTRS ports from being mapped to the same subcarrier, thereby effectively ensuring Orthogonality between different PTRS ports.
  • an embodiment of the present disclosure further provides a method for transmitting a reference signal, which is applied to a terminal, and includes:
  • Step S301 Acquire location information of the target subcarrier indicated by the base station in an implicit or explicit manner, where the target subcarrier is a subcarrier occupied by the target demodulation reference signal DMRS port, and is used to map the target phase tracking reference signal PTRS.
  • the subcarrier of the port, and the target DMRS port is the DMRS port corresponding to the target PTRS port.
  • the location information includes: offset information of the preset reference subcarrier corresponding to the target DMRS port and the target subcarrier, a location of a subcarrier used to map the PTRS port in each subcarrier occupied by the DMRS port, or Offset information of a preset reference subcarrier corresponding to the DMRS port of the subcarrier used by each DMRS port.
  • the target PTRS port is a PTRS port that currently needs to perform subcarrier mapping.
  • Step S302 Determine a target subcarrier according to the location information.
  • the method for transmitting a reference signal in the embodiment of the present disclosure acquires location information of a target subcarrier indicated by the base station in an implicit or explicit manner, and determines a target subcarrier according to the location information.
  • the embodiment of the present disclosure determines the target subcarrier according to the location information of the target subcarrier indicated by the base station and performs transmission, which can effectively ensure orthogonality between different PTRS ports.
  • the method further includes:
  • a PTRS is acquired on the target subcarrier, and phase noise estimation is performed according to the PTRS.
  • the receiving end by acquiring the PTRS transmitted by the base station on the target subcarrier, the receiving end can ensure the phase noise estimation of the link and compensate the influence of the phase noise.
  • step S302 includes:
  • the corresponding relationship between each PTRS port and the DMRS port group notified by the receiving base station is determined, and the correspondence between each PTRS port and the DMRS port in the DMRS port group is determined according to the corresponding relationship and the system agreement, and further according to In the foregoing location information, the target subcarrier is determined in the subcarrier occupied by the DMRS port corresponding to the PTRS port.
  • acquiring location information of the target subcarrier indicated by the base station in an explicit manner includes:
  • the location information includes: offset information of the preset reference subcarrier corresponding to the target DMRS port and the target subcarrier.
  • step S301 the location information of the target subcarrier indicated by the base station in an implicit manner is obtained, including:
  • the location information includes: a location of a subcarrier used to map the PTRS port in each subcarrier occupied by the DMRS port; or a subcarrier used to map the PTRS port in the subcarrier occupied by each DMRS port and the DMRS Offset information of the preset reference subcarrier corresponding to the port.
  • Each of the DMRS ports is a port in a preset DMRS port group
  • the DMRS ports in the same preset DMRS port group occupy the same subcarriers, and the DMRS ports in different preset DMRS port groups occupy different subcarriers.
  • This preset reference subcarrier is well known to the base station and the terminal. That is, for DMRS ports 0, 1, 4, and 5, the preset reference subcarrier is subcarrier 1, and for DMRS ports 2, 3, 6, and 7, the preset reference subcarrier is subcarrier 2.
  • the base station is configured with two PTRS ports.
  • the base station determines that PTRS port 0 has a group correspondence with DMRS port 0-3, which uses precoding of DMRS port 0, ie it has a port corresponding to DMRS port 0.
  • the base station determines that PTRS port 1 has a group correspondence with DMRS ports 4-7, which uses precoding of DMRS port 4, ie it has a port correspondence with DMRS port 4.
  • the value of S_offset represents the number of offset subcarriers. As can be seen from FIG.
  • the base station informs the terminal by signaling the subcarrier offset S_offset of each PTRS port.
  • PTRS port 0 does not perform offset on the preset reference subcarrier
  • PTRS port 1 performs offset of 2 subcarriers on the reference subcarrier and transmits.
  • the terminal has a port correspondence relationship with each PTRS port agreed by the system and the DMRS port of the smallest port number in the DMRS port group, and determines that the PTRS port 0 has a port correspondence relationship with the DMRS port 0, and the PTRS port 1 and The DMRS port 4 has a port correspondence.
  • the location information is offset information of a preset reference subcarrier corresponding to the DMRS port of the subcarrier used by each DMRS port in the preset DMRS port group.
  • FIG 2a there are two DMRS port groups based on carrier positions. Ports 0 and 1 are one packet, ports 2 and 3 are one packet; in Figure 2b, there are two carrier-based DMRS port groups, where ports 0, 1, 4, and 5 are one packet, and ports 2, 3 6 and 7 are one packet; in Figure 2c, there are 3 carrier-based DMRS port groups, where ports 0 and 1 are one packet, ports 2 and 3 are one packet, and ports 4 and 5 are one packet; In 2d, it is divided into three carrier-based DMRS port groups, where ports 0, 1, 6, and 7 are one packet, ports 2, 3, 8, and 9 are one packet, and ports 4, 5, 10, and 11 are one. Grouping.
  • the offset information of the PTRS port and the subcarrier of each DMRS port is defined in the group where the ports 0, 1, 6, and 7 are located, as shown in Table 1.
  • the offset information of the PTRS port and the subcarrier of each DMRS port is defined, as shown in Table 2.
  • the offset information of the PTRS port and the subcarriers of each DMRS port is defined, as shown in Table 3.
  • steps 1-2 are predefined by the system and are known to the base station and the terminal.
  • the base station is configured with two PTRS ports.
  • the base station determines that PTRS port 0 has a group correspondence with DMRS port 0-2, which uses precoding of DMRS port 0, ie it has a port correspondence with DMRS port 0.
  • the base station determines that PTRS port 1 has a group correspondence with DMRS port 3-5, which uses precoding of DMRS port 3, ie it has a port correspondence with DMRS port 3.
  • PTRS port 0 is mapped to the first subcarrier of DMRS port 0, that is, transmitted on subcarrier 1; according to Table 2, PTRS port 1 is mapped to the first subcarrier where DMRS port 3 is located. Moving on one subcarrier, that is, transmitting on subcarrier 4, as shown in FIG.
  • the receiving end has a port correspondence relationship with each PT-RS port agreed by the system and the DMRS port of the smallest port number in the group according to the group correspondence relationship, and determines that the PTRS port 0 has a port correspondence relationship with the DMRS port 0, and the PTRS port 1 It has a port correspondence with the DMRS port 3.
  • PTRS port 0 is not offset on the first subcarrier where DMRS port 0 is located, and is located in subcarrier 1; and PTRS port 1 is in DMRS port.
  • the offset of 1 subcarrier is performed on the first subcarrier where 3 is located, and is located in subcarrier 4. Perform phase noise estimation.
  • the method for transmitting a reference signal is used to map a target subcarrier of a target phase tracking reference signal PTRS port to a subcarrier occupied by a target demodulation reference signal DMRS port.
  • the location information is instructed to the terminal, so that the terminal determines the target subcarrier according to the location information, and then obtains the PTRS transmitted by the base station on the target subcarrier, implements the purpose of performing PTRS transmission according to the location information, and can avoid different PTRS ports. Mapping to the same subcarrier effectively ensures orthogonality between different PTRS ports.
  • an embodiment of the present disclosure further provides a base station, including a memory 620, a processor 600, a transceiver 610, a bus interface, and a computer program stored on the memory 620 and operable on the processor 600.
  • the processor 600 is configured to read a program in the memory 620, and execute the following processes: a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program The following steps:
  • the location information of the target subcarrier for mapping the target phase tracking reference signal PTRS port is indicated to the terminal, and the target DMRS port is targeted.
  • DMRS port corresponding to the PTRS port is targeted.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 600 and various circuits of memory represented by memory 620.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 610 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 in performing operations.
  • the processor 600 can also implement the following steps when executing the computer program:
  • the location information of the target subcarrier for mapping the target phase tracking reference signal PTRS port is indicated to the terminal, and the target DMRS port is targeted.
  • DMRS port corresponding to the PTRS port is targeted.
  • the processor 600 can also implement the following steps when executing the computer program:
  • the processor 600 can also implement the following steps when executing the computer program:
  • the location information includes: offset information of the preset reference subcarrier corresponding to the target DMRS port and the target subcarrier.
  • the processor 600 can also implement the following steps when executing the computer program:
  • the processor 600 can also implement the following steps when executing the computer program:
  • the location information is indicated to the terminal by a protocol agreement
  • the location information includes: a location of a subcarrier used to map the PTRS port in each subcarrier occupied by the DMRS port; or a subcarrier used to map the PTRS port in the subcarrier occupied by each DMRS port and the DMRS Offset information of the preset reference subcarrier corresponding to the port.
  • Each of the DMRS ports is a port in a preset DMRS port group
  • the DMRS ports in the same preset DMRS port group occupy the same subcarriers, and the DMRS ports in different preset DMRS port groups occupy different subcarriers.
  • a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the following steps:
  • the location information of the target subcarrier for mapping the target phase tracking reference signal PTRS port is indicated to the terminal, and the target DMRS port is targeted.
  • DMRS port corresponding to the PTRS port is targeted.
  • an embodiment of the present disclosure further provides a reference signal transmission apparatus, which is applied to a base station, and includes:
  • the indication module 701 is configured to: in an implicit or explicit manner, indicate, to the terminal, the location information of the target subcarrier used for mapping the target phase tracking reference signal PTRS port in the subcarrier occupied by the target demodulation reference signal DMRS port.
  • the target DMRS port is a DMRS port corresponding to the target PTRS port.
  • the transmission device of the reference signal of the embodiment of the present disclosure further includes:
  • the transmitting module 702 transmits the PTRS to the terminal on the target subcarrier.
  • the indication module 701 includes:
  • the first indicator sub-module 7011 is configured to send the location information to the terminal by using signaling
  • the location information includes: offset information of the preset reference subcarrier corresponding to the target DMRS port and the target subcarrier.
  • the selecting module 703 is configured to select a target subcarrier used for mapping the PTRS port among the subcarriers occupied by the target DMRS port.
  • the processing module 704 is configured to determine offset information of the target subcarrier and the preset reference subcarrier.
  • the indication module 701 includes:
  • a second indicator sub-module 7012 configured to indicate the location information to the terminal by using a protocol agreement
  • the location information includes: a location of a subcarrier used to map the PTRS port in each subcarrier occupied by the DMRS port; or a subcarrier used to map the PTRS port in the subcarrier occupied by each DMRS port and the DMRS Offset information of the preset reference subcarrier corresponding to the port.
  • each of the DMRS ports is a port in a preset DMRS port group
  • the DMRS ports in the same preset DMRS port group occupy the same subcarriers, and the DMRS ports in different preset DMRS port groups occupy different subcarriers.
  • the reference signal transmission apparatus of the embodiment of the present disclosure uses an implicit or explicit manner to allocate a target subcarrier of a target phase tracking reference signal PTRS port to a subcarrier occupied by a target demodulation reference signal DMRS port.
  • the location information is instructed to the terminal, so that the terminal determines the target subcarrier according to the location information, and then obtains the PTRS transmitted by the base station on the target subcarrier, implements the purpose of performing PTRS transmission according to the location information, and can avoid different PTRS ports. Mapping to the same subcarrier effectively ensures orthogonality between different PTRS ports.
  • the device is a device corresponding to the foregoing method embodiment applied to the base station side. All the implementation manners in the foregoing method embodiments are applicable to the device embodiment, and the same technical effects can be achieved.
  • a terminal including a memory 920, a processor 900, a transceiver 910, a user interface 930, a bus interface, and is stored on the memory 920 and can be processed.
  • a computer program running on the processor 900, the processor 900 is configured to read a program in the memory 920, and perform the following process:
  • the target subcarrier is a subcarrier used by the target demodulation reference signal DMRS port, and is used to map the target phase tracking reference signal PTRS port Carrier
  • the target DMRS port is the DMRS port corresponding to the target PTRS port
  • a target subcarrier is determined based on the location information.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 900 and various circuits of memory represented by memory 920.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 910 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 930 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 can store data used by the processor 900 in performing operations.
  • the processor 900 is further configured to read a program in the memory 920, and perform the following steps:
  • a PTRS is acquired on the target subcarrier, and phase noise estimation is performed according to the PTRS.
  • the processor 900 is further configured to read a program in the memory 920, and perform the following steps:
  • the processor 900 is further configured to read a program in the memory 920, and perform the following steps:
  • the location information includes: offset information of the preset reference subcarrier corresponding to the target DMRS port and the target subcarrier.
  • the processor 900 is further configured to read a program in the memory 920, and perform the following steps:
  • the location information includes: a location of a subcarrier used to map the PTRS port in each subcarrier occupied by the DMRS port; or a subcarrier used to map the PTRS port in the subcarrier occupied by each DMRS port and the DMRS Offset information of the preset reference subcarrier corresponding to the port.
  • Each of the DMRS ports is a port in a preset DMRS port group
  • the DMRS ports in the same preset DMRS port group occupy the same subcarriers, and the DMRS ports in different preset DMRS port groups occupy different subcarriers.
  • a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the following steps:
  • the target subcarrier is a subcarrier used by the target demodulation reference signal DMRS port, and is used to map the target phase tracking reference signal PTRS port Carrier
  • the target DMRS port is the DMRS port corresponding to the target PTRS port
  • a target subcarrier is determined based on the location information.
  • an embodiment of the present disclosure further provides a reference signal transmission apparatus, which is applied to a terminal, and includes:
  • the obtaining module 1001 is configured to acquire location information of a target subcarrier indicated by the base station in an implicit or explicit manner, where the target subcarrier is used in a subcarrier occupied by a target demodulation reference signal DMRS port, and is used for mapping target phase tracking.
  • the target DMRS port is the DMRS port corresponding to the target PTRS port;
  • the determining module 1002 is configured to determine a target subcarrier according to the location information.
  • the transmission device of the reference signal of the embodiment of the present disclosure further includes:
  • the estimation module 1003 is configured to acquire a PTRS on the target subcarrier, and perform phase noise estimation according to the PTRS.
  • the determining module 1002 includes:
  • a first determining submodule 10021 configured to determine a target DMRS port corresponding to the target PTRS port
  • the second determining submodule 10022 is configured to determine, according to the location information, a target subcarrier in a subcarrier occupied by the target DMRS port.
  • the acquiring module 1001 includes:
  • the first obtaining sub-module 10011 is configured to acquire location information that is sent by the base station by using signaling;
  • the location information includes: offset information of the preset reference subcarrier corresponding to the target DMRS port and the target subcarrier.
  • the acquiring module 1001 includes:
  • a second obtaining sub-module 10012 configured to acquire location information of the target subcarrier by using a protocol agreement
  • the location information includes: a location of a subcarrier used to map the PTRS port in each subcarrier occupied by the DMRS port; or a subcarrier used to map the PTRS port in the subcarrier occupied by each DMRS port and the DMRS Offset information of the preset reference subcarrier corresponding to the port.
  • each of the DMRS ports is a port in a preset DMRS port group
  • the DMRS ports in the same preset DMRS port group occupy the same subcarriers, and the DMRS ports in different preset DMRS port groups occupy different subcarriers.
  • the device is a device corresponding to the foregoing method for transmitting a reference signal applied to the terminal side, wherein all the implementation manners in the foregoing method embodiments are applicable to the embodiment of the device, and the same technology can be achieved. effect.

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Abstract

本公开提供了一种参考信号的传输方法、装置、基站及终端。本公开的传输方法包括:通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,目标DMRS端口为目标PTRS端口对应的DMRS端口。

Description

一种参考信号的传输方法、装置、基站及终端
相关申请的交叉引用
本申请主张在2017年9月8日在中国提交的中国专利申请号No.201710805104.3的优先权,其全部内容通过引用包含于此。
技术领域
本公开涉及通信应用的技术领域,尤其涉及一种参考信号的传输方法、装置、基站及终端。
背景技术
相位噪声来自于发射机与接收机中的本地振荡器,其对于多载波信号的传输将产生影响,尤其在高频段(6GHz以上),相位噪声的影响将更加严重,需要对接收信号进行相位噪声的补偿以保证系统性能。通过在发送端引入相位跟踪参考信号(phase tracking reference signal,简称PTRS),可以跟踪由于相位噪声所引起的相位变化,保证接收端能够进行链路的相位噪声估计,并对相位噪声的影响进行补偿。
在新空口NR系统中,PTRS在用户调度的频带内传输,根据其频域密度不同,可以每个资源块(physical resource block,简称PRB),每2个PRB或者每4个PRB映射一次,并且在存在PTRS的PRB中,每个PTRS端口映射至一个子载波。每个PTRS端口对应一组解调参考信号(demodulation reference signal,简称DMRS)端口,以下称为组对应。组内的每个DMRS端口受到相同相位噪声源的影响,此PTRS端口用于补偿组内每个DMRS端口的相位噪声。若存在多个相位噪声源,则需要多个PTRS端口。
与DMRS类似,PTRS也需要经过预编码后传输。为了补偿相位噪声的影响,PTRS使用的预编码和与此PT-RS端口相对应的一组DMRS端口所使用的预编码相关。同时,为了保证补偿精度,PTRS应该映射在与其相对应的DMRS端口组所在的子载波上。目前一种实现方式是预定义PTRS端口使用与其相对应的DMRS端口组中的一个固定的DMRS端口所使用的预编码,且 映射至此DMRS端口所在的子载波上,以下称为端口对应。此固定的DMRS端口可以是组内编号最小的DMRS端口。但关于PTRS端口如何映射至与其端口对应的DMRS端口所在的子载波上,目前还没有相应的解决方案。
发明内容
本公开的目的在于提供一种参考信号的传输方法、装置、基站及终端,用以解决关于PTRS端口如何映射至与其端口对应的DMRS端口所在的子载波上,目前还没有相应的解决方案的问题。
为了实现上述目的,本公开提供了一种参考信号的传输方法,应用于基站,包括:
通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,目标DMRS端口为目标PTRS端口对应的DMRS端口。
其中,上述参考信号的传输方法,还包括:
在所述目标子载波上向所述终端传输PTRS。
其中,通过显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,包括:
通过信令将所述位置信息发送给所述终端;
所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
其中,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端的步骤之前,还包括:
在目标DMRS端口所占用的子载波中,选取用于映射PTRS端口的目标子载波;
确定所述目标子载波与所述预设参考子载波的偏移信息。
其中,通过隐式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息 指示给终端,包括:
通过协议约定将所述位置信息指示给所述终端;
所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
其中,每个所述DMRS端口为预设DMRS端口组中的端口;
其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。
为了实现上述目的,本公开实施例还提供了一种参考信号的传输方法,应用于终端,包括:
获取基站通过隐式或显式的方式指示的目标子载波的位置信息,所述目标子载波为目标解调参考信号DMRS端口占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的子载波,目标DMRS端口为目标PTRS端口对应的DMRS端口;
根据所述位置信息,确定目标子载波。
其中,上述参考信号的传输方法,还包括:
在所述目标子载波上获取PTRS,并根据PTRS进行相位噪声估计。
其中,所述根据所述位置信息,确定目标子载波的步骤,包括:
确定与目标PTRS端口对应的目标DMRS端口;
根据所述位置信息,在所述目标DMRS端口占用的子载波中,确定目标子载波。
其中,获取基站通过显式的方式指示的目标子载波的位置信息,包括:
获取基站通过信令发送的位置信息;
所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
其中,获取基站通过隐式的方式指示的目标子载波的位置信息,包括:
通过协议约定,获取所述目标子载波的位置信息;
所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射 PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
其中,每个所述DMRS端口为预设DMRS端口组中的端口;
其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。
为了实现上述目的,本公开实施例还提供了一种基站,包括:收发机、存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,所述处理器执行所述计算机程序时实现以下步骤:
通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,目标DMRS端口为目标PTRS端口对应的DMRS端口。
其中,所述处理器执行所述计算机程序时还可实现以下步骤:
在所述目标子载波上通过收发机向所述终端传输PTRS。
其中,所述处理器执行所述计算机程序时还可实现以下步骤:
通过信令将所述位置信息利用收发机发送给所述终端;
所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
其中,所述处理器执行所述计算机程序时还可实现以下步骤:
在目标DMRS端口所占用的子载波中,选取用于映射PTRS端口的目标子载波;
确定所述目标子载波与所述预设参考子载波的偏移信息。
其中,所述处理器执行所述计算机程序时还可实现以下步骤:
通过协议约定将所述位置信息指示给所述终端;
所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
其中,每个所述DMRS端口为预设DMRS端口组中的端口;
其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。
为了实现上述目的,本公开实施例还提供了一种计算机可读存储介质, 其上存储有计算机程序,该计算机程序被处理器执行时实现以下步骤:
通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,目标DMRS端口为目标PTRS端口对应的DMRS端口。
为了实现上述目的,本公开实施例还提供了一种终端,包括:收发机、存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,所述处理器执行所述计算机程序时实现以下步骤:
获取基站通过隐式或显式的方式指示的目标子载波的位置信息,所述目标子载波为目标解调参考信号DMRS端口占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的子载波,目标DMRS端口为目标PTRS端口对应的DMRS端口;
根据所述位置信息,确定目标子载波。
其中,所述处理器执行所述计算机程序时还可实现以下步骤:
在所述目标子载波上获取PTRS,并根据PTRS进行相位噪声估计。
其中,所述处理器执行所述计算机程序时还可实现以下步骤:
确定与目标PTRS端口对应的目标DMRS端口;
根据所述位置信息,在所述目标DMRS端口占用的子载波中,确定目标子载波。
其中,所述处理器执行所述计算机程序时还可实现以下步骤:
利用收发机获取基站通过信令发送的位置信息;
所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
其中,所述处理器执行所述计算机程序时还可实现以下步骤:
通过协议约定,获取所述目标子载波的位置信息;
所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
其中,每个所述DMRS端口为预设DMRS端口组中的端口;
其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同 预设DMRS端口组内的DMRS端口占用的子载波不同。
为了实现上述目的,本公开实施例还提供了一种计算机可读存储介质,其上存储有计算机程序,该计算机程序被处理器执行时实现以下步骤:
获取基站通过隐式或显式的方式指示的目标子载波的位置信息,所述目标子载波为目标解调参考信号DMRS端口占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的子载波,目标DMRS端口为目标PTRS端口对应的DMRS端口;
根据所述位置信息,确定目标子载波。
为了实现上述目的,本公开实施例还提供了一种参考信号的传输装置,应用于基站,包括:
指示模块,用于通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,目标DMRS端口为目标PTRS端口对应的DMRS端口。
其中,所述指示模块包括:
第一指示子模块,用于通过信令将所述位置信息发送给所述终端;
所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
其中,所述指示模块包括:
第二指示子模块,用于通过协议约定将所述位置信息指示给所述终端;
所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
其中,每个所述DMRS端口为预设DMRS端口组中的端口;
其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。
为了实现上述目的,本公开实施例还提供了一种参考信号的传输装置,应用于终端,包括:
获取模块,用于获取基站通过隐式或显式的方式指示的目标子载波的位 置信息,所述目标子载波为目标解调参考信号DMRS端口占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的子载波,目标DMRS端口为目标PTRS端口对应的DMRS端口;
确定模块,用于根据所述位置信息,确定目标子载波。
其中,所述获取模块包括:
第一获取子模块,用于获取基站通过信令发送的位置信息;
所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
其中,所述获取模块包括:
第二获取子模块,用于通过协议约定,获取所述目标子载波的位置信息;
所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
其中,每个所述DMRS端口为预设DMRS端口组中的端口;
其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。
本公开实施例具有以下有益效果:
本公开实施例的上述技术方案,通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,使得终端根据该位置信息,确定目标子载波,进而能够在该目标子载波上获取基站传输的PTRS,实现了根据该位置信息进行PTRS传输的目的,且能够避免不同PTRS端口映射至相同的子载波上,有效保证了不同PTRS端口之间的正交性。
附图说明
图1为本公开实施例的参考信号的传输方法的第一工作流程图;
图2a为本公开实施例中DMRS的第一配置示意图;
图2b为本公开实施例中DMRS的第二配置示意图;
图2c为本公开实施例中DMRS的第三配置示意图;
图2d为本公开实施例中DMRS的第四配置示意图;
图3为本公开实施例的参考信号的传输方法的第二工作流程图;
图4为本公开实施例中PTRS的第一映射示意图;
图5为本公开实施例中PTRS的第二映射示意图;
图6为本公开实施例的基站的结构框图;
图7为本公开实施例的基站的第一模块示意图;
图8为本公开实施例的基站的第二模块示意图;
图9为本公开实施例的终端的结构框图;
图10为本公开实施例的终端的第一模块示意图;
图11为本公开实施例的终端的第二模块示意图。
具体实施方式
为使本公开要解决的技术问题、技术方案和优点更加清楚,下面将结合具体实施例及附图进行详细描述。
本公开的实施例提供了一种参考信号的传输方法、装置、基站及终端,解决了关于PTRS端口如何映射至与其端口对应的DMRS端口所在的子载波上,目前还没有相应的解决方案的问题。
如图1所示,本公开实施例提供了一种参考信号的传输方法,应用于基站,包括:
步骤S101:通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,目标DMRS端口为目标PTRS端口对应的DMRS端口。
在本公开的具体实施例中,每个PTRS端口对应一组DMRS端口,且每个PTRS端口与该组DMRS端口中的预设DMRS端口对应,如与该组DMRS端口中端口编号最小的DMRS端口对应。
上述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息、每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置、或者每个DMRS端口所占用的子载波中用于映射PTRS 端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。其中,目标PTRS端口为当前需要进行子载波映射的PTRS端口。
通过将目标DMRS端口所占用的子载波中,用于映射目标PTRS端口的目标子载波的位置信息指示给终端,使得终端能够根据该位置信息,确定目标子载波,且能够保证不同PTRS端口之间的正交性。
进一步地,上述步骤S101之后,还包括:
在所述目标子载波上向所述终端传输PTRS。
本公开实施例的参考信号的传输方法,基站将目标子载波的位置信息指示给终端,并将PTRS映射在目标子载波上发送给终端。
进一步地,上述步骤S101中,通过显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,包括:
通过信令将所述位置信息发送给所述终端;
所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
这里的预设参考子载波为通信系统预先定义的、基站和终端所共知的子载波。具体的,在一个PRB内根据子载波的排列顺序,定义每个DMRS端口占用的第S个子载波为预设参考子载波。
进一步地,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端的步骤之前,还包括:
在目标DMRS端口所占用的子载波中,选取用于映射PTRS端口的目标子载波;确定所述目标子载波与所述预设参考子载波的偏移信息。
上述偏移信息可具体为频率偏移信息、子载波偏移信息和/或PRB偏移信息等。
本公开实施例中,基站首先根据预设PTRS端口与DMRS端口组的对应关系,确定与基站配置的每个PTRS端口对应的DMRS端口组,并根据系统约定,确定该DMRS端口组中与该PTRS端口对应的DMRS端口。接着,基站在与目标PTRS对应的目标DMRS端口中选取用于映射PTRS端口的目标 子载波,然后确定目标子载波与预设参考子载波的偏移信息。
下面对本公开实施例的一具体应用流程说明如下。
(1)系统预定义在一个PRB内每个DMRS端口占用的第S个子载波为预设参考子载波。此预设参考子载波为基站和终端所共知。
(2)针对基站配置的每个PTRS端口,基站确定与PTRS端口对应的DMRS端口,并确定此PTRS端口的子载波偏移S_offset的取值。此S_offset的取值可以是正整数、零或者负整数。
(3)基站将每个PTRS端口的子载波偏移S_offset通过信令告知终端,同时将每个端口的PTRS映射至包含PTRS的PRB中由S和S_offset所共同确定的子载波上发送。
本公开实施例的参考信号的传输方法,通过系统预定义预设参考子载波,确定每个PTRS端口在与其对应的DMRS端口所在子载波中的位置,确定映射PTRS端口的子载波与预设参考子载波的偏移信息,并将该偏移信息通过信令告知终端,实现了将PTRS端口映射至与其对应的DMRS端口所在的子载波上的目的,并且能够保证不同PTRS端口之间的正交性。
进一步地,上述步骤S101中,通过隐式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,包括:
通过协议约定将所述位置信息指示给所述终端;
所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
进一步地,每个所述DMRS端口为预设DMRS端口组中的端口;
其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。同一预设DMRS端口组的不同DMRS端口中用于映射PTRS端口的子载波不同。
在本公开的具体实施例中,DMRS的配置包括两种配置类型,且每种配置类型包括1个正交频分复用OFDM符号和2个OFDM符号两种选择,配置类型1如图2a和图2b所示,配置类型2如图2c和图2d所示。针对每一 种DMRS配置,将其所支持的最大数目的DMRS端口分成多个DMRS端口组,称为基于子载波位置的DMRS端口组(预设DMRS端口组)。其中,每个基于子载波位置的DMRS端口组中的DMRS端口占用相同的子载波,不同基于子载波位置的DMRS端口组中的DMRS端口占用不同的子载波。
在每个基于子载波位置的DMRS端口组内,系统预定义每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置,或者每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。系统定义的信息,为基站和终端共知。对于不同的基于子载波位置的DMRS端口组中,用于映射PTRS端口的子载波的偏移信息可以相同也可以不同。
基站配置的每个PTRS端口,由基站确定与其对应的DMRS端口,并根据上述预定义的位置信息,确定此PTRS端口映射的子载波,并将PTRS发送给终端。
本公开实施例的参考信号的传输方法,通过协议约定将所述位置信息指示给所述终端,并根据该位置信息进行PTRS传输,且能够避免不同PTRS端口映射至相同的子载波上,有效保证了不同PTRS端口之间的正交性。
如图3所示,本公开的实施例还提供了一种参考信号的传输方法,应用于终端,包括:
步骤S301:获取基站通过隐式或显式的方式指示的目标子载波的位置信息,所述目标子载波为目标解调参考信号DMRS端口占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的子载波,目标DMRS端口为目标PTRS端口对应的DMRS端口。
上述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息、每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置、或者每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。其中,目标PTRS端口为当前需要进行子载波映射的PTRS端口。
步骤S302:根据所述位置信息,确定目标子载波。
本公开实施例的参考信号的传输方法,获取基站通过隐式或显式的方式 指示的目标子载波的位置信息,根据所述位置信息,确定目标子载波。本公开实施例根据基站指示的目标子载波的位置信息确定目标子载波并进行传输,能够有效保证不同PTRS端口之间的正交性。
进一步地,上述步骤S302之后,还包括:
在所述目标子载波上获取PTRS,并根据PTRS进行相位噪声估计。
本公开实施例中,通过在目标子载波上获取基站传输的PTRS,保证接收端能够进行链路的相位噪声估计,并对相位噪声的影响进行补偿。
进一步地,上述步骤S302包括:
确定与目标PTRS端口对应的目标DMRS端口;根据所述位置信息,在所述目标DMRS端口占用的子载波中,确定目标子载波。
具体的,接收基站通过信令告知的每个PTRS端口与DMRS端口组的对应关系,根据该对应关系以及系统约定,确定每个PTRS端口与DMRS端口组中的DMRS端口的对应关系,并进一步根据上述位置信息,在PTRS端口对应的DMRS端口占用的子载波中,确定目标子载波。
进一步地,上述步骤S301中,获取基站通过显式的方式指示的目标子载波的位置信息,包括:
获取基站通过信令发送的位置信息;
所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
进一步地,上述步骤S301中,获取基站通过隐式的方式指示的目标子载波的位置信息,包括:
通过协议约定,获取所述目标子载波的位置信息;
所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
每个所述DMRS端口为预设DMRS端口组中的端口;
其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。
下面对本公开的具体应用实施例说明如下。
实施例一
假设DMRS的配置类型为图2b中的配置类型。
基站:
(1)系统预定义在一个PRB内每个DMRS端口占用的第S=1个子载波为预设参考子载波。此预设参考子载波为基站和终端所共知。即对于DMRS端口0、1、4和5,其预设参考子载波为子载波1,而对于DMRS端口2、3、6和7,其预设参考子载波为子载波2。
(2)基站配置2个PTRS端口。基站确定PTRS端口0与DMRS端口0-3具有组对应,其使用DMRS端口0的预编码,即其与DMRS端口0具有端口对应。基站确定PTRS端口1与DMRS端口4-7具有组对应,其使用DMRS端口4的预编码,即其与DMRS端口4具有端口对应。假设S_offset的取值表示偏移的子载波个数。根据图2b可知,由于DMRS端口0和DMRS端口4占用相同的子载波,基站确定PTRS端口0的子载波偏移指示S_offset0=0,PTRS端口1的子载波偏移指示S_offset1=2。需要指出S_offset的取值也可以表示其他含义,如表示偏移至此DMRS端口占用的第S_offset个子载波,或者偏移的PRB个数等。
(3)基站将每个PTRS端口的子载波偏移S_offset通过信令告知终端。如图4所示,PTRS端口0在预设参考子载波上不进行偏移,而PTRS端口1在参考子载波上进行2个子载波的偏移并进行传输。
终端:
(1)接收基站通过信令告知的PTRS端口0与DMRS端口0-3的组对应关系,PTRS端口1与DMRS端口4-7的组对应关系。
(2)终端根据组对应关系,和系统约定的每个PTRS端口与DMRS端口组中最小端口编号的DMRS端口具有端口对应关系,确定PTRS端口0与DMRS端口0具有端口对应关系,PTRS端口1与DMRS端口4具有端口对应关系。
(3)接收基站通过信令告知的每个PTRS端口的子载波偏移S_offset。
(4)根据系统预定义的预设参考子载波S和S_offset共同确定每个端口的PTRS所在子载波,即PTRS端口0在预设参考子载波上不进行偏移,位 于子载波1;而PTRS端口1在预设参考子载波上进行2个子载波的偏移,位于子载波3,进行相位噪声估计。
实施例二
假定上述位置信息为预设DMRS端口组中的每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
基站:
(1)图2a中,分为2个基于载波位置的DMRS端口组。其中端口0和1为一个分组,端口2和3为一个分组;图2b中,分为2个基于载波位置的DMRS端口组,其中端口0、1、4和5为一个分组,端口2、3、6和7为一个分组;图2c中,分为3个基于载波位置的DMRS端口组,其中端口0和1为一个分组,端口2和3为一个分组,端口4和5为一个分组;图2d中,分为3个基于载波位置的DMRS端口组,其中端口0、1、6和7为一个分组,端口2、3、8和9为一个分组,端口4、5、10和11为一个分组。
(2)以图2d为例,在端口0、1、6和7所在的分组内,定义PTRS端口与每个DMRS端口的子载波的偏移信息,具体如表1所示。
Figure PCTCN2018104118-appb-000001
表1
在端口2、3、8和9所在的分组内,定义PTRS端口与每个DMRS端口的子载波的偏移信息,具体如表2所示。
Figure PCTCN2018104118-appb-000002
表2
在端口4、5、10和11所在的分组内,定义PTRS端口与每个DMRS端 口的子载波的偏移信息,具体如表3所示。
Figure PCTCN2018104118-appb-000003
表3
(3)以上步骤1-2由系统预定义,并为基站和终端共知。
(4)基站配置2个PTRS端口。基站确定PTRS端口0与DMRS端口0-2具有组对应,其使用DMRS端口0的预编码,即其与DMRS端口0具有端口对应。基站确定PTRS端口1与DMRS端口3-5具有组对应,其使用DMRS端口3的预编码,即其与DMRS端口3具有端口对应。根据表1,PTRS端口0映射至DMRS端口0的第一个子载波上,即在子载波1上进行传输;根据表2,PTRS端口1映射至DMRS端口3所在的第一个子载波再偏移一个子载波上,即在子载波4上进行传输,如图5所示。
终端
(1)接收基站通过信令告知的PTRS端口0与DMRS端口0-2的组对应关系,PTRS端口1与与DMRS端口3-5的组对应关系。
(2)接收端根据组对应关系,和系统约定的每个PT-RS端口与组中最小端口编号的DMRS端口具有端口对应关系,确定PTRS端口0与DMRS端口0具有端口对应关系,PTRS端口1与DMRS端口3具有端口对应关系。
(3)根据系统预定义的表1和表3的映射关系,确定PTRS端口0在DMRS端口0所在的第一个子载波上不进行偏移,位于子载波1;而PTRS端口1在DMRS端口3所在的第一个子载波上进行1个子载波的偏移,位于子载波4。进行相位噪声估计。
本公开实施例的参考信号的传输方法,通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,使得终端根据该位置信息,确定目标子载波,进而能够在该目标子载波上获取基站传输的PTRS,实 现了根据该位置信息进行PTRS传输的目的,且能够避免不同PTRS端口映射至相同的子载波上,有效保证了不同PTRS端口之间的正交性。
如图6所示,本公开的实施例还提供了一种基站,包括存储器620、处理器600、收发机610、总线接口及存储在存储器620上并可在处理器600上运行的计算机程序,所述处理器600用于读取存储器620中的程序,执行下列过程:处理器及存储在存储器上并可在处理器上运行的计算机程序,其中,所述处理器执行所述计算机程序时实现以下步骤:
通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,目标DMRS端口为目标PTRS端口对应的DMRS端口。
其中,在图6中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器600代表的一个或多个处理器和存储器620代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机610可以是多个元件,即包括发送机和收发机,提供用于在传输介质上与各种其他装置通信的单元。处理器600负责管理总线架构和通常的处理,存储器620可以存储处理器600在执行操作时所使用的数据。
所述处理器600执行所述计算机程序时还可实现以下步骤:
通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,目标DMRS端口为目标PTRS端口对应的DMRS端口。
所述处理器600执行所述计算机程序时还可实现以下步骤:
在所述目标子载波上通过收发机向所述终端传输PTRS。
所述处理器600执行所述计算机程序时还可实现以下步骤:
通过信令将所述位置信息利用收发机发送给所述终端;
所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
所述处理器600执行所述计算机程序时还可实现以下步骤:
在目标DMRS端口所占用的子载波中,选取用于映射PTRS端口的目标子载波;
确定所述目标子载波与所述预设参考子载波的偏移信息。
所述处理器600执行所述计算机程序时还可实现以下步骤:
通过协议约定将所述位置信息指示给所述终端;
所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
其中,每个所述DMRS端口为预设DMRS端口组中的端口;
其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。
在本公开的一些实施例中,还提供了一种计算机可读存储介质,其上存储有计算机程序,该程序被处理器执行时实现以下步骤:
通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,目标DMRS端口为目标PTRS端口对应的DMRS端口。
该程序被处理器执行时能实现上述应用于基础侧的方法实施例中的所有实现方式,为避免重复,此处不再赘述。
如图7所示,本公开的实施例还提供了一种参考信号的传输装置,应用于基站,包括:
指示模块701,用于通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,目标DMRS端口为目标PTRS端口对应的DMRS端口。
本公开实施例的参考信号的传输装置,如图8所示,还包括:
传输模块702,在所述目标子载波上向所述终端传输PTRS。
本公开实施例的参考信号的传输装置,所述指示模块701包括:
第一指示子模块7011,用于通过信令将所述位置信息发送给所述终端;
所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述 目标子载波的偏移信息。
本公开实施例的参考信号的传输装置,还包括:
选取模块703,用于在目标DMRS端口所占用的子载波中,选取用于映射PTRS端口的目标子载波;
处理模块704,用于确定所述目标子载波与所述预设参考子载波的偏移信息。
本公开实施例的参考信号的传输装置,所述指示模块701包括:
第二指示子模块7012,用于通过协议约定将所述位置信息指示给所述终端;
所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
本公开实施例的参考信号的传输装置,每个所述DMRS端口为预设DMRS端口组中的端口;
其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。
本公开实施例的参考信号的传输装置,通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,使得终端根据该位置信息,确定目标子载波,进而能够在该目标子载波上获取基站传输的PTRS,实现了根据该位置信息进行PTRS传输的目的,且能够避免不同PTRS端口映射至相同的子载波上,有效保证了不同PTRS端口之间的正交性。
需要说明的是,该装置是与上述应用于基站侧的方法实施例对应的装置,上述方法实施例中所有实现方式均适用于该装置的实施例中,也能达到相同的技术效果。
在本公开的一些实施例中,参照图9所示,还提供了一种终端,包括存储器920、处理器900、收发机910、用户接口930、总线接口及存储在存储器920上并可在处理器900上运行的计算机程序,所述处理器900用于读取存储器920中的程序,执行下列过程:
获取基站通过隐式或显式的方式指示的目标子载波的位置信息,所述目标子载波为目标解调参考信号DMRS端口占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的子载波,目标DMRS端口为目标PTRS端口对应的DMRS端口;
根据所述位置信息,确定目标子载波。
其中,在图9中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器900代表的一个或多个处理器和存储器920代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机910可以是多个元件,即包括发送机和收发机,提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备,用户接口930还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器900负责管理总线架构和通常的处理,存储器920可以存储处理器900在执行操作时所使用的数据。
处理器900还用于读取存储器920中的程序,执行如下步骤:
在所述目标子载波上获取PTRS,并根据PTRS进行相位噪声估计。
处理器900还用于读取存储器920中的程序,执行如下步骤:
确定与目标PTRS端口对应的目标DMRS端口;
根据所述位置信息,在所述目标DMRS端口占用的子载波中,确定目标子载波。
处理器900还用于读取存储器920中的程序,执行如下步骤:
利用收发机获取基站通过信令发送的位置信息;
所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
处理器900还用于读取存储器920中的程序,执行如下步骤:
通过协议约定,获取所述目标子载波的位置信息;
所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射 PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
其中,每个所述DMRS端口为预设DMRS端口组中的端口;
其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。
在本公开的一些实施例中,还提供了一种计算机可读存储介质,其上存储有计算机程序,该程序被处理器执行时实现以下步骤:
获取基站通过隐式或显式的方式指示的目标子载波的位置信息,所述目标子载波为目标解调参考信号DMRS端口占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的子载波,目标DMRS端口为目标PTRS端口对应的DMRS端口;
根据所述位置信息,确定目标子载波。
该程序被处理器执行时能实现上述应用于终端侧的方法实施例中的所有实现方式,为避免重复,此处不再赘述。
如图10所示,本公开的实施例还提供了一种参考信号的传输装置,应用于终端,包括:
获取模块1001,用于获取基站通过隐式或显式的方式指示的目标子载波的位置信息,所述目标子载波为目标解调参考信号DMRS端口占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的子载波,目标DMRS端口为目标PTRS端口对应的DMRS端口;
确定模块1002,用于根据所述位置信息,确定目标子载波。
本公开实施例的参考信号的传输装置,如图11所示,还包括:
估计模块1003,用于在所述目标子载波上获取PTRS,并根据PTRS进行相位噪声估计。
本公开实施例的参考信号的传输装置,所述确定模块1002包括:
第一确定子模块10021,用于确定与目标PTRS端口对应的目标DMRS端口;
第二确定子模块10022,用于根据所述位置信息,在所述目标DMRS端口占用的子载波中,确定目标子载波。
本公开实施例的参考信号的传输装置,所述获取模块1001包括:
第一获取子模块10011,用于获取基站通过信令发送的位置信息;
所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
本公开实施例的参考信号的传输装置,所述获取模块1001包括:
第二获取子模块10012,用于通过协议约定,获取所述目标子载波的位置信息;
所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
本公开实施例的参考信号的传输装置,每个所述DMRS端口为预设DMRS端口组中的端口;
其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。
需要说明的是,该装置是与上述应用于终端侧的参考信号的传输方法相对应的装置,其中上述方法实施例中所有实现方式均适用于该装置的实施例中,也能达到同样的技术效果。
在本公开的各种实施例中,应理解,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本公开实施例的实施过程构成任何限定。
以上所述是本公开的可选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本公开所述原理的前提下,还可以作出若干改进和润饰,这些改进和润饰也应视为本公开的保护范围。

Claims (34)

  1. 一种参考信号的传输方法,应用于基站,包括:
    通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,目标DMRS端口为目标PTRS端口对应的DMRS端口。
  2. 根据权利要求1所述的参考信号的传输方法,还包括:
    在所述目标子载波上向所述终端传输PTRS。
  3. 根据权利要求1所述的参考信号的传输方法,其中,通过显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,包括:
    通过信令将所述位置信息发送给所述终端;
    所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
  4. 根据权利要求3所述的参考信号的传输方法,其中,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端的步骤之前,还包括:
    在目标DMRS端口所占用的子载波中,选取用于映射PTRS端口的目标子载波;
    确定所述目标子载波与所述预设参考子载波的偏移信息。
  5. 根据权利要求1所述的参考信号的传输方法,其中,通过隐式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,包括:
    通过协议约定将所述位置信息指示给所述终端;
    所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
  6. 根据权利要求5所述的参考信号的传输方法,其中,每个所述DMRS端口为预设DMRS端口组中的端口;
    其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。
  7. 一种参考信号的传输方法,应用于终端,包括:
    获取基站通过隐式或显式的方式指示的目标子载波的位置信息,所述目标子载波为目标解调参考信号DMRS端口占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的子载波,目标DMRS端口为目标PTRS端口对应的DMRS端口;
    根据所述位置信息,确定目标子载波。
  8. 根据权利要求7所述的参考信号的传输方法,其中,还包括:
    在所述目标子载波上获取PTRS,并根据PTRS进行相位噪声估计。
  9. 根据权利要求7所述的参考信号的传输方法,其中,所述根据所述位置信息,确定目标子载波的步骤,包括:
    确定与目标PTRS端口对应的目标DMRS端口;
    根据所述位置信息,在所述目标DMRS端口占用的子载波中,确定目标子载波。
  10. 根据权利要求7所述的参考信号的传输方法,其中,获取基站通过显式的方式指示的目标子载波的位置信息,包括:
    获取基站通过信令发送的位置信息;
    所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
  11. 根据权利要求7所述的参考信号的传输方法,其中,获取基站通过隐式的方式指示的目标子载波的位置信息,包括:
    通过协议约定,获取所述目标子载波的位置信息;
    所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
  12. 根据权利要求7所述的参考信号的传输方法,其中,每个所述DMRS端口为预设DMRS端口组中的端口;
    其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同 预设DMRS端口组内的DMRS端口占用的子载波不同。
  13. 一种基站,包括:收发机、存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,其中,所述处理器执行所述计算机程序时实现以下步骤:
    通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,目标DMRS端口为目标PTRS端口对应的DMRS端口。
  14. 根据权利要求13所述的基站,其中,所述处理器执行所述计算机程序时还可实现以下步骤:
    在所述目标子载波上通过收发机向所述终端传输PTRS。
  15. 根据权利要求13所述的基站,其中,所述处理器执行所述计算机程序时还可实现以下步骤:
    通过信令将所述位置信息利用收发机发送给所述终端;
    所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
  16. 根据权利要求15所述的基站,其中,所述处理器执行所述计算机程序时还可实现以下步骤:
    在目标DMRS端口所占用的子载波中,选取用于映射PTRS端口的目标子载波;
    确定所述目标子载波与所述预设参考子载波的偏移信息。
  17. 根据权利要求13所述的基站,其中,所述处理器执行所述计算机程序时还可实现以下步骤:
    通过协议约定将所述位置信息指示给所述终端;
    所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
  18. 根据权利要求17所述的基站,其中,每个所述DMRS端口为预设DMRS端口组中的端口;
    其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同 预设DMRS端口组内的DMRS端口占用的子载波不同。
  19. 一种计算机可读存储介质,其上存储有计算机程序,其中,该计算机程序被处理器执行时实现以下步骤:
    通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,目标DMRS端口为目标PTRS端口对应的DMRS端口。
  20. 一种终端,包括:收发机、存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,其中,所述处理器执行所述计算机程序时实现以下步骤:
    获取基站通过隐式或显式的方式指示的目标子载波的位置信息,所述目标子载波为目标解调参考信号DMRS端口占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的子载波,目标DMRS端口为目标PTRS端口对应的DMRS端口;
    根据所述位置信息,确定目标子载波。
  21. 根据权利要求20所述的终端,其中,所述处理器执行所述计算机程序时还可实现以下步骤:
    在所述目标子载波上获取PTRS,并根据PTRS进行相位噪声估计。
  22. 根据权利要求20所述的终端,其中,所述处理器执行所述计算机程序时还可实现以下步骤:
    确定与目标PTRS端口对应的目标DMRS端口;
    根据所述位置信息,在所述目标DMRS端口占用的子载波中,确定目标子载波。
  23. 根据权利要求20所述的终端,其中,所述处理器执行所述计算机程序时还可实现以下步骤:
    利用收发机获取基站通过信令发送的位置信息;
    所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
  24. 根据权利要求20所述的终端,其中,所述处理器执行所述计算机程序时还可实现以下步骤:
    通过协议约定,获取所述目标子载波的位置信息;
    所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
  25. 根据权利要求20所述的终端,其中,每个所述DMRS端口为预设DMRS端口组中的端口;
    其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。
  26. 一种计算机可读存储介质,其上存储有计算机程序,其中,该计算机程序被处理器执行时实现以下步骤:
    获取基站通过隐式或显式的方式指示的目标子载波的位置信息,所述目标子载波为目标解调参考信号DMRS端口占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的子载波,目标DMRS端口为目标PTRS端口对应的DMRS端口;
    根据所述位置信息,确定目标子载波。
  27. 一种参考信号的传输装置,应用于基站,包括:
    指示模块,用于通过隐式或显式的方式,将目标解调参考信号DMRS端口所占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的目标子载波的位置信息指示给终端,目标DMRS端口为目标PTRS端口对应的DMRS端口。
  28. 根据权利要求27所述的参考信号的传输装置,其中,所述指示模块包括:
    第一指示子模块,用于通过信令将所述位置信息发送给所述终端;
    所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
  29. 根据权利要求27所述的参考信号的传输装置,其中,所述指示模块包括:
    第二指示子模块,用于通过协议约定将所述位置信息指示给所述终端;
    所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS 端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
  30. 根据权利要求29所述的参考信号的传输装置,其中,每个所述DMRS端口为预设DMRS端口组中的端口;
    其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。
  31. 一种参考信号的传输装置,应用于终端,,包括:
    获取模块,用于获取基站通过隐式或显式的方式指示的目标子载波的位置信息,所述目标子载波为目标解调参考信号DMRS端口占用的子载波中,用于映射目标相位跟踪参考信号PTRS端口的子载波,目标DMRS端口为目标PTRS端口对应的DMRS端口;
    确定模块,用于根据所述位置信息,确定目标子载波。
  32. 根据权利要求31所述的参考信号的传输装置,其中,所述获取模块包括:
    第一获取子模块,用于获取基站通过信令发送的位置信息;
    所述位置信息包括:所述目标DMRS端口对应的预设参考子载波与所述目标子载波的偏移信息。
  33. 根据权利要求31所述的参考信号的传输装置,其中,所述获取模块包括:
    第二获取子模块,用于通过协议约定,获取所述目标子载波的位置信息;
    所述位置信息包括:每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波的位置;或者,每个DMRS端口所占用的子载波中用于映射PTRS端口的子载波与该DMRS端口对应的预设参考子载波的偏移信息。
  34. 根据权利要求31所述的参考信号的传输装置,其中,每个所述DMRS端口为预设DMRS端口组中的端口;
    其中,同一预设DMRS端口组内的DMRS端口占用的子载波相同,不同预设DMRS端口组内的DMRS端口占用的子载波不同。
PCT/CN2018/104118 2017-09-08 2018-09-05 一种参考信号的传输方法、装置、基站及终端 Ceased WO2019047845A1 (zh)

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