CN111416692A - Configuration method and equipment - Google Patents

Configuration method and equipment Download PDF

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Publication number
CN111416692A
CN111416692A CN201910010611.7A CN201910010611A CN111416692A CN 111416692 A CN111416692 A CN 111416692A CN 201910010611 A CN201910010611 A CN 201910010611A CN 111416692 A CN111416692 A CN 111416692A
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dmrs
configuration
target
sequence
terminal
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CN111416692B (en
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周伟
倪吉庆
左君
韩双锋
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a configuration method and equipment, relates to the technical field of communication, and aims to solve the problem that the number of ports borne by the existing DMRS scheme cannot meet the user requirement, wherein the method comprises the following steps: the terminal receives first indication information from network equipment, wherein the first indication information is used for indicating a target demodulation reference signal (DMRS) configuration used by the terminal; and the terminal generates a target DMRS sequence according to the target DMRS configuration. In the embodiment of the invention, the terminal determines the used target DMRS configuration according to the first indication information sent by the network equipment, and generates the target DMRS sequence according to the target DMRS configuration, so that the number of ports of the DMRS can meet the requirements of users.

Description

Configuration method and equipment
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a configuration method and equipment.
Background
Referring to fig. 1, a demodulation reference Signal (DMRS) design scheme of a Physical Uplink Shared Channel (PUSCH) in a fifth generation communication technology (5G) is shown. Under the scheme, at most 12 DMRS ports may be carried on time-Frequency resources of 1 Physical Resource Block (PRB) and 2 Orthogonal Frequency Division Multiplexing (OFDM) symbols. Taking Code Division Multiplexing (CDM) group 0 as an example, 8 Resource Elements (REs) are occupied on the time-frequency resource. The 8 REs carry 4 DMRS ports over length 4 Orthogonal Code (OCC).
To further improve the spectrum utilization efficiency and the number of users supported by the 5G system, the third Generation Partnership Project (3 GPP) discusses to introduce a Non-Orthogonal Multiple Access (NOMA) technique into the 5G standard. The NOMA technology can allocate a block of resources to a plurality of users, and then realize correct demodulation by combining technologies such as serial interference elimination of a receiving end and the like.
However, due to the increase of the number of uplink access users after the NOMA technology is introduced, the number of ports carried by the existing DMRS scheme cannot meet the user requirements.
Disclosure of Invention
The embodiment of the invention provides a configuration method and equipment, and solves the problem that the number of ports borne by the existing DMRS scheme cannot meet the user requirement.
According to a first aspect of the embodiments of the present invention, there is provided a configuration method, applied to a terminal, the method including: receiving first indication information from a network device, wherein the first indication information is used for indicating a target demodulation reference signal (DMRS) configuration used by the terminal; generating a target DMRS sequence according to the target DMRS configuration; wherein the target DMRS configuration includes a first configuration scheme or a second configuration scheme of a DMRS of a second configuration type 2.
Optionally, the first configuration scheme and the second configuration scheme may divide resource elements, REs, included in each code division multiplexing group, CDM group, in the same manner;
optionally, the first configuration scheme corresponds to a frequency domain orthogonal sequence of a first length, and the second configuration scheme corresponds to a frequency domain orthogonal sequence of a second length.
Optionally, the generating a target DMRS sequence according to the target DMRS configuration includes: and calculating to obtain the target DMRS sequence through a DMRS sequence generation algorithm corresponding to the target DMRS configuration.
Optionally, the DMRS sequence generation algorithm calculates DMRS symbols of the DMRS ports through a frequency domain orthogonal sequence, a time domain orthogonal sequence, and a DMRS symbol sequence.
Optionally, when the target DMRS is configured as the first configuration scheme, the DMRS sequence generation algorithm is:
Figure BDA0001937108310000021
k＝6n+k′+Δ；
k′＝0,1；
wherein ,
Figure BDA0001937108310000022
indicating DMRS ports mapped on subcarrier k, orthogonal frequency division multiplexing OFDM symbol l
Figure BDA0001937108310000023
The DMRS symbol of (a); μ represents a subcarrier spacing configuration;
Figure BDA0001937108310000027
Figure BDA0001937108310000025
for the starting OFDM symbol position carrying DMRS, l' is 0, 1; n is a natural number, j is 0,1, …, v-1, and v is the total number of DMRS ports; w is af(k') represents a frequency domain orthogonal sequence; w is at(l') represents a time-domain orthogonal sequence; r (2n + k') denotes a DMRS symbol sequence; delta meterIndicating the subcarrier offset.
Optionally, when the target DMRS is configured as the second configuration scheme, the DMRS sequence generation algorithm is:
Figure BDA0001937108310000026
Figure BDA0001937108310000031
Figure BDA0001937108310000032
k′＝0,1；k″＝0,1,2,3；
wherein ,
Figure BDA0001937108310000033
indicating DMRS ports mapped on subcarriers k, OFDM symbols l
Figure BDA0001937108310000034
The DMRS symbol of (a); μ represents a subcarrier spacing configuration;
Figure BDA0001937108310000035
Figure BDA0001937108310000036
for the starting OFDM symbol position carrying DMRS, l' is 0, 1; n is a natural number; j is 0,1, …, v-1, v is the DMRS port total number; w is af(k ") represents a frequency domain orthogonal sequence; w is at(l') represents a time-domain orthogonal sequence; r (2n + k ") denotes a DMRS symbol sequence; Δ represents a subcarrier offset.
Optionally, after the generating of the target DMRS sequence according to the target DMRS configuration, the method further comprises: receiving second indication information from a network device, wherein the second indication information is used for indicating a target DMRS port; determining a target DMRS symbol from the target DMRS sequence according to the target DMRS port; and mapping the target DMRS symbols on the RE corresponding to the target DMRS port, and transmitting the DMRS to the network equipment.
According to a second aspect of the embodiments of the present invention, there is provided a configuration method applied to a network device, the method including: sending first indication information to a terminal, wherein the first indication information is used for indicating a target DMRS configuration used by the terminal, and generating a target DMRS sequence by the terminal according to the target DMRS configuration; wherein the target DMRS configuration includes a first configuration scheme or a second configuration scheme of a DMRS of configuration type 2.
Optionally, the first configuration scheme and the second configuration scheme may divide resource elements, REs, included in each code division multiplexing group CDM group in the same manner.
Optionally, the first configuration scheme corresponds to a frequency domain orthogonal sequence of a first length, and the second configuration scheme corresponds to a frequency domain orthogonal sequence of a second length.
Optionally, after the sending the first indication information to the terminal, the method further includes: sending second indication information to the terminal, wherein the second indication information is used for indicating a target DMRS port used by the terminal, determining a target DMRS symbol from the target DMRS sequence according to the target DMRS port by the terminal, and mapping the target DMRS symbol on an RE corresponding to the target DMRS port; and receiving the DMRS sent by the terminal.
According to a third aspect of the embodiments of the present invention, there is provided a terminal, including: the terminal comprises a first transceiver and a first processor, wherein the first transceiver is used for receiving first indication information from a network device, and the first indication information is used for indicating a target demodulation reference signal (DMRS) configuration used by the terminal; the first processor is configured to generate a target DMRS sequence according to the target DMRS configuration; wherein the target DMRS configuration includes a first configuration scheme or a second configuration scheme of a DMRS of configuration type 2.
Optionally, the first configuration scheme and the second configuration scheme may divide resource elements, REs, included in each code division multiplexing group, CDM group, in the same manner;
optionally, the first configuration scheme corresponds to a frequency domain orthogonal sequence of a first length, and the second configuration scheme corresponds to a frequency domain orthogonal sequence of a second length.
Optionally, the first processor is further configured to calculate the target DMRS sequence through a DMRS sequence generation algorithm corresponding to the target DMRS configuration.
Optionally, the DMRS sequence generation algorithm calculates DMRS symbols of the DMRS ports through a frequency domain orthogonal sequence, a time domain orthogonal sequence, and a DMRS symbol sequence.
Optionally, when the target DMRS is configured as the first configuration scheme, the DMRS sequence generation algorithm is:
Figure BDA0001937108310000041
k＝6n+k′+Δ；
k′＝0,1；
wherein ,
Figure BDA0001937108310000042
indicating DMRS ports mapped on subcarrier k, orthogonal frequency division multiplexing OFDM symbol l
Figure BDA0001937108310000043
The DMRS symbol of (a); μ represents a subcarrier spacing configuration;
Figure BDA0001937108310000044
Figure BDA0001937108310000045
for the starting OFDM symbol position carrying DMRS, l' is 0, 1; n is a natural number, j is 0,1, …, v-1, and v is the total number of DMRS ports; w is af(k') represents a frequency domain orthogonal sequence; w is at(l') represents a time-domain orthogonal sequence; r (2n + k') denotes a DMRS symbol sequence; Δ represents a subcarrier offset.
Optionally, when the target DMRS is configured as the second configuration scheme, the DMRS sequence generation algorithm is:
Figure BDA0001937108310000051
Figure BDA0001937108310000052
Figure BDA0001937108310000053
k′＝0,1；k″＝0,1,2,3；
wherein ,
Figure BDA0001937108310000054
indicating DMRS ports mapped on subcarriers k, OFDM symbols l
Figure BDA0001937108310000055
The DMRS symbol of (a); μ represents a subcarrier spacing configuration;
Figure BDA0001937108310000056
Figure BDA0001937108310000057
for the starting OFDM symbol position carrying DMRS, l' is 0, 1; n is a natural number; j is 0,1, …, v-1, v is the DMRS port total number; w is af(k ") represents a frequency domain orthogonal sequence; w is at(l') represents a time-domain orthogonal sequence; r (2n + k ") denotes a DMRS symbol sequence; Δ represents a subcarrier offset.
Optionally, the first transceiver is further configured to receive second indication information from a network device, where the second indication information is used to indicate a target DMRS port; the first processor is further configured to determine a target DMRS symbol from the target DMRS sequence based on the target DMRS port; the first processor is further configured to map the target DMRS symbol on an RE corresponding to the target DMRS port, and transmit the DMRS to the network device.
According to a fourth aspect of the embodiments of the present invention, there is provided a network device, including: a network device, comprising: the terminal generates a target DMRS sequence according to the target DMRS configuration, wherein the target DMRS configuration comprises a first configuration scheme or a second configuration scheme of a DMRS of a configuration type 2.
Optionally, the first configuration scheme and the second configuration scheme may divide resource elements, REs, included in each code division multiplexing group CDM group in the same manner.
Optionally, the first configuration scheme corresponds to a frequency domain orthogonal sequence of a first length, and the second configuration scheme corresponds to a frequency domain orthogonal sequence of a second length.
Optionally, the second transceiver is further configured to send second indication information to the terminal, where the second indication information is used to indicate a target DMRS port used by the terminal, determine, by the terminal, a target DMRS symbol from the target DMRS sequence according to the target DMRS port, and map the target DMRS symbol on an RE corresponding to the target DMRS port; the second transceiver is further configured to receive the DMRS sent by the terminal
According to a fifth aspect of embodiments of the present invention, there is provided a terminal, comprising a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the configuration method according to the first aspect.
According to a sixth aspect of the embodiments of the present invention, there is provided a network device, including a processor, a memory, and a program stored on the memory and executable on the processor, the program implementing the steps of the configuration method according to the second aspect when executed by the processor.
According to a seventh aspect of embodiments of the present invention, there is provided a computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which, when executed by a processor, implements the steps of the configuration method according to the first aspect or the steps of the configuration method according to the second aspect.
In the embodiment of the invention, the terminal determines the used target DMRS configuration according to the first indication information sent by the network equipment, and generates the target DMRS sequence according to the target DMRS configuration, so that the number of ports of the DMRS can meet the requirements of users.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a conventional DMRS structure;
fig. 2 is a block diagram of a wireless communication system according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a configuration method according to an embodiment of the present invention;
fig. 4a is a schematic diagram of first indication information provided in an embodiment of the present invention;
fig. 4b is a schematic diagram of a DMRS structure according to an embodiment of the present invention;
FIG. 5 is a second flowchart illustrating a configuration method according to an embodiment of the present invention;
fig. 6 is a third schematic flowchart of a configuration method according to an embodiment of the present invention;
FIG. 7a is one of application scenarios provided by the embodiments of the present invention;
FIG. 7b is a second application scenario provided by the embodiment of the present invention;
FIG. 8 is a fourth flowchart illustrating a configuration method according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present invention;
fig. 11 is a second schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 12 is a second schematic structural diagram of a network device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, an embodiment of the present invention provides a wireless communication system. As shown in fig. 2, the wireless communication system may include: a network side device 21 and a terminal 22. In practical applications, the connections between the above devices may be wireless connections, and fig. 2 is illustrated with solid lines for convenience and intuition of the connection relationships between the devices.
It should be noted that the communication system may include a plurality of terminals, and the network side device may communicate (transmit signaling or transmit data) with the plurality of terminals.
The network side device may be a network side device (e.g., a next generation base station (gNB) or a Transmission and Reception Point (TRP)) in a 5G (Fifth-generation mobile communication technology) system.
The terminal may be a Mobile phone, a tablet computer, a notebook computer, an Ultra-Mobile Personal computer (UMPC), a netbook, or a Personal Digital Assistant (PDA).
Referring to fig. 3, an embodiment of the present invention provides a configuration method, where an execution subject of the method is a terminal, and the method includes the following specific steps:
step 301: receiving first indication information from a network device;
in this embodiment of the present invention, the first indication information is used to indicate a target DMRS configuration used by the terminal, and optionally, the first indication information is carried in a Radio Resource Control (RRC) signaling.
Further, the target DMRS configuration includes a first configuration scheme or a second configuration scheme of a DMRS of a second configuration type (configuration type 2).
The first configuration scheme and the second configuration scheme divide REs contained in each CDM group in the same way; the first configuration scheme corresponds to a frequency domain orthogonal sequence of a first length, and the second configuration scheme corresponds to a frequency domain orthogonal sequence of a second length.
Specifically, referring to fig. 4a, the network device sends an RRC signaling to the terminal, where the RRC signaling is DMRS-UplinkConfig, the first indication information is a DMRS-Type field in the signaling, and the terminal determines a target DMRS configuration to be used according to the content of the DMRS-Type field.
Step 302: generating a target DMRS sequence according to the target DMRS configuration;
in the embodiment of the invention, the terminal generates the target DMRS sequences in different modes according to different target DMRS configurations indicated by network equipment.
Specifically, the terminal calculates and obtains a target DMRS sequence through a DMRS sequence generation algorithm corresponding to the target DMRS configuration.
With continued reference to fig. 4a, when the DMRS-Type field is configured to be Type2, it indicates that the target DMRS is configured to be a first configuration scheme, and a frequency-domain orthogonal sequence with a first length is adopted on the REs corresponding to each CDM group, for example: the first length is 4;
referring to fig. 4b, when the DMRS-Type field is configured to Type2E, it indicates that the target DMRS is configured to be a second configuration scheme, and a frequency-domain orthogonal sequence of a second length is adopted on the REs corresponding to each CDM group, for example: the second length is 8.
It can be understood that, when the frequency domain orthogonal sequence with the length of 8 is on the RE of each CDM group, the total number of DMRS ports that can be carried on the same time-frequency resource can be increased to 24, thereby meeting the port requirements of more users.
Optionally, the DMRS sequence generation algorithm calculates DMRS symbols of the DMRS ports through a frequency domain orthogonal sequence, a time domain orthogonal sequence, and a DMRS symbol sequence.
Further, when the target DMRS is configured as the first configuration scheme, the DMRS sequence generation algorithm is:
Figure BDA0001937108310000081
k＝6n+k′+Δ；
k′＝0,1；
wherein ,
Figure BDA0001937108310000091
indicating DMRS ports mapped on subcarriers k, OFDM symbols l
Figure BDA0001937108310000092
The DMRS symbol of (a); μ represents a subcarrier spacing configuration;
Figure BDA0001937108310000093
Figure BDA0001937108310000097
for the starting OFDM symbol position carrying DMRS, l' is 0, 1; n is a natural number, j is 0,1, ….., v-1, v is the total number of DMRS ports, v is a positive integer, and j is a natural number; w is af(k') represents a frequency domain orthogonal sequence; w is at(l') represents a time-domain orthogonal sequence; r (2n + k') denotes a DMRS symbol sequence; Δ represents a subcarrier offset.
The corresponding values of the parameters in the algorithm can refer to table 1:
Figure BDA0001937108310000094
TABLE 1
Further, when the target DMRS is configured as the second configuration scheme, the DMRS sequence generation algorithm is:
Figure BDA0001937108310000095
Figure BDA0001937108310000096
Figure BDA0001937108310000101
k′＝0,1；k″＝0,1,2,3；
wherein ,
Figure BDA0001937108310000102
indicating DMRS ports mapped on subcarriers k, OFDM symbols l
Figure BDA0001937108310000103
The DMRS symbol of (a); μ represents a subcarrier spacing configuration;
Figure BDA0001937108310000104
Figure BDA0001937108310000105
for the starting OFDM symbol position carrying DMRS, l' is 0, 1; n is a natural number; j is 0, 1.. the.. v-1, v is the total number of DMRS ports, v is a positive integer, and j is a natural number; w is af(k ") represents a frequency domain orthogonal sequence; w is at(l') represents a time-domain orthogonal sequence; r (2n + k ") denotes a DMRS symbol sequence; Δ represents a subcarrier offset.
The corresponding values of the parameters in the algorithm can refer to table 2:
Figure BDA0001937108310000106
Figure BDA0001937108310000111
TABLE 2
Referring to fig. 5, an embodiment of the present invention provides a configuration method, where an execution subject of the method is a network device, and the method includes the following specific steps:
step 501: sending first indication information to a terminal;
in this embodiment of the present invention, the first indication information is used to indicate a target DMRS configuration used by the terminal, and the terminal generates the target DMRS sequence according to the target DMRS configuration, where a specific generation process may refer to descriptions in step 301 and step 302 in fig. 3, and details are not described here.
In the embodiment of the invention, the terminal determines the used target DMRS configuration according to the first indication information sent by the network equipment, and generates the target DMRS sequence according to the target DMRS configuration, so that the number of ports of the DMRS can meet the requirements of users.
Referring to fig. 6, an embodiment of the present invention provides a configuration method, where an execution subject of the method is a terminal, and the method includes the following specific steps:
step 601: receiving first indication information from a network device;
step 602: generating a target DMRS sequence according to the target DMRS configuration;
the description of step 601 and step 602 above can refer to the description of step 301 and step 302 in fig. 3.
Step 603: receiving second indication information from the network device;
in this embodiment of the present invention, the second indication information is used to indicate the target DMRS port, and optionally, the second indication information is carried in an Uplink grant (U L grant) message or a configuration grant (Configured grant) message, and further, the second indication information is antenna port (antenna port) information.
Step 604: determining a target DMRS symbol from the target DMRS sequence according to the target DMRS port;
in the embodiment of the invention, a terminal determines a target DMRS symbol corresponding to a target DMRS port in a target DMRS sequence according to the target DMRS port.
Specifically, taking the target DMRS port as port 3(port 3) as an example, port 3 indicates
Figure BDA0001937108310000121
The terminal calculates and obtains the corresponding DMRS symbol according to the DMRS sequence generation algorithm
Figure BDA0001937108310000122
Step 605: and mapping the target DMRS symbols on the RE corresponding to the target DMRS port, and transmitting the DMRS to the network equipment.
In the embodiment of the present invention, referring to fig. 7a, when the first indication information indicates that a frequency domain orthogonal sequence of a first length is adopted on REs of each CDM group, DMRS symbols generated by port 3 and the positions of the corresponding REs are shown.
Referring to fig. 7b, a DMRS symbol generated by port 3 and a position of a corresponding RE are shown when first indication information indicates a frequency-domain orthogonal sequence with a second length on REs of each CDM group.
Referring to fig. 8, an embodiment of the present invention provides a configuration method, where an execution subject of the method is a network device, and the method includes the following specific steps:
step 801: sending first indication information to a terminal;
the description of step 801 may refer to the description of step 501 in fig. 5, and will not be described herein again.
Step 802: sending second indication information to the terminal;
in this embodiment of the present invention, the second indication information is used to indicate a target DMRS port used by the terminal, and the terminal determines a target DMRS symbol from the target DMRS sequence according to the target DMRS port, and maps the target DMRS symbol to an RE corresponding to the target DMRS port, where a specific process may refer to the description of step 603 and step 605 in fig. 6, and details are not described here.
Step 803: receiving a DMRS transmitted by a terminal;
in the embodiment of the invention, after the terminal generates the target DMRS sequence, the target DMRS port is determined according to the second indication information sent by the network equipment, the corresponding target DMRS symbol is determined through the target DMRS port, the target DMRS symbol is mapped on the RE corresponding to the target DMRS port, and the DMRS is sent to the network equipment, so that the requirement of a user for using the DMRS port is met.
Referring to fig. 9, an embodiment of the present invention provides a terminal 900, including: a first transceiver 901 and a first processor 902;
the first transceiver 901 is configured to receive first indication information from a network device, where the first indication information is used to indicate a target DMRS configuration used by the terminal;
the first processor 902 is configured to generate a target DMRS sequence according to the target DMRS configuration.
Wherein the target DMRS configuration includes a first configuration scheme or a second configuration scheme of a DMRS of configuration type 2.
Optionally, the first configuration scheme and the second configuration scheme may divide resource elements, REs, included in each code division multiplexing group CDM group in the same manner.
Optionally, the first configuration scheme corresponds to a frequency domain orthogonal sequence of a first length, and the second configuration scheme corresponds to a frequency domain orthogonal sequence of a second length.
Optionally, the first processor 902 is further configured to calculate the target DMRS sequence through a DMRS sequence generation algorithm corresponding to the target DMRS configuration.
Optionally, the DMRS sequence generation algorithm calculates DMRS symbols of the DMRS ports through a frequency domain orthogonal sequence, a time domain orthogonal sequence, and a DMRS symbol sequence.
Optionally, when the target DMRS configuration indicates a frequency-domain orthogonal sequence with a first length on REs of each CDM group, the DMRS sequence generation algorithm is:
Figure BDA0001937108310000131
k＝6n+k′+Δ；
k′＝0,1；
wherein ,
Figure BDA0001937108310000132
indicating DMRS ports mapped on subcarriers k, OFDM symbols l
Figure BDA0001937108310000133
The DMRS symbol of (a); μ represents a subcarrier spacing configuration;
Figure BDA0001937108310000134
Figure BDA0001937108310000135
for the starting OFDM symbol position carrying DMRS, l' is 0, 1; n is a natural number, j is 0,1, and v is the total number of DMRS ports; w is af(k') represents a frequency domain orthogonal sequence; w is at(l') represents a time-domain orthogonal sequence; r (2n + k') denotes a DMRS symbol sequence; Δ represents a subcarrier offset.
Optionally, when the target DMRS configuration indicates a frequency-domain orthogonal sequence with a second length on REs of each CDM group, the DMRS sequence generation algorithm is:
Figure BDA0001937108310000141
Figure BDA0001937108310000142
Figure BDA0001937108310000143
k′＝0,1；k″＝0,1,2,3；
wherein ,
Figure BDA0001937108310000144
indicating DMRS ports mapped on subcarriers k, OFDM symbols l
Figure BDA0001937108310000145
The DMRS symbol of (a); μ represents a subcarrier spacing configuration;
Figure BDA0001937108310000146
Figure BDA0001937108310000147
for the starting OFDM symbol position carrying DMRS, l' is 0, 1; n is a natural number; j is 0,1, …, v-1, v is the DMRS port total number; w is af(k ") represents a frequency domain orthogonal sequence; w is at(l') represents a time-domain orthogonal sequence; r (2n + k ") denotes a DMRS symbol sequence; Δ represents a subcarrier offset.
Optionally, the first transceiver 901 is further configured to receive second indication information from a network device, where the second indication information is used to indicate a target DMRS port;
the first processor 902 is further configured to determine a target DMRS symbol from the target DMRS sequence according to the target DMRS port;
the first processor 902 is further configured to map the target DMRS symbol on an RE corresponding to the target DMRS port, and transmit a DMRS to the network device;
in the embodiment of the invention, the terminal determines the used target DMRS configuration according to the first indication information sent by the network equipment, and generates the target DMRS sequence according to the target DMRS configuration, so that the number of ports of the DMRS can meet the requirements of users.
Referring to fig. 10, an embodiment of the present invention provides a network device 1000, including: a second transceiver 1001 and a second processor 1002;
the second transceiver 1001 is configured to send first indication information to a terminal, where the first indication information is used to indicate a target DMRS configuration used by the terminal, and the terminal generates a target DMRS sequence according to the target DMRS configuration.
Wherein the target DMRS configuration includes a first configuration scheme or a second configuration scheme of a DMRS of configuration type 2.
Optionally, the first configuration scheme and the second configuration scheme may divide resource elements, REs, included in each code division multiplexing group CDM group in the same manner.
Optionally, the first configuration scheme corresponds to a frequency domain orthogonal sequence of a first length, and the second configuration scheme corresponds to a frequency domain orthogonal sequence of a second length.
Optionally, the second transceiver 1001 is further configured to send, to the terminal, second indication information, where the second indication information is used to indicate a target DMRS port used by the terminal, determine, by the terminal, a target DMRS symbol from the target DMRS sequence according to the target DMRS port, and map the target DMRS symbol on an RE corresponding to the target DMRS port;
the second transceiver 1001 is further configured to receive the DMRS sent by the terminal.
In the embodiment of the invention, the terminal determines the used target DMRS configuration according to the first indication information sent by the network equipment, and generates the target DMRS sequence according to the target DMRS configuration, so that the number of ports of the DMRS can meet the requirements of users.
Referring to fig. 11, another terminal 1100 according to an embodiment of the present invention includes: at least one processor 1101, memory 1102, a user interface 1103, and at least one network interface 1104. The various components in terminal 1100 are coupled together by a bus system 1105.
It will be appreciated that the bus system 1105 is used to enable connected communication between these components. The bus system 1105 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 11 as the bus system 1105.
The user interface 1103 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, a trackball, a touch pad, or a touch screen, etc.).
It is understood that the Memory 1102 in embodiments of the present invention may be either volatile Memory or non-volatile Memory, or may include both volatile and non-volatile Memory, wherein non-volatile Memory may be Read-Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), or flash Memory volatile Memory may be Random Access Memory (RAM), which serves as external cache Memory, and by way of example and not limitation, many forms of RAM are available, such as Static RAM (Static RAM), Dynamic Random Access Memory (Dynamic DRAM, DRAM), Synchronous Dynamic Random Access Memory (syncrons DRAM, SDRAM), Double data rate Synchronous Dynamic Random Access Memory (Double data rate, rsddata), Enhanced Dynamic DRAM (Enhanced DRAM, SDRAM), or flash Memory, and that other types of RAM suitable for Direct Access, including but not limited to the embodiments of the present invention are also described herein as DRAM, and are also suitable for Direct Access RAM (S) Access memories (S) and flash memories (S).
In some embodiments, memory 1102 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 11021 and application programs 11022.
The operating system 11021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application programs 11022, including various application programs such as a media player, a browser, and the like, are used to implement various application services. Programs that implement methods in accordance with embodiments of the invention may be included in application 11022.
In this embodiment of the present invention, the terminal 1100 may further include: a program stored on the memory 1102 and executable on the processor 1101, which when executed by the processor 1101, performs the steps of a method provided by an embodiment of the present invention.
The methods disclosed in the embodiments of the present invention described above may be implemented in the processor 1101 or by the processor 1101. The processor 1101 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 1101. The Processor 1101 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102 and performs the steps of the above method in combination with the hardware thereof. Specifically, the computer-readable storage medium has stored thereon a computer program.
For a hardware implementation, the processing units may be implemented within one or more ASICs, DSPs, Digital Signal Processing Devices (DSPDs), Programmable logic devices (P L D), FPGAs, general purpose processors, controllers, microcontrollers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.
Referring to fig. 12, an embodiment of the present invention provides another network device 1200, including: a processor 1201, a transceiver 1202, a memory 1203 and a bus interface.
Among other things, the processor 1201 may be responsible for managing the bus architecture and general processing. The memory 1203 may store data used by the processor 1201 in performing operations.
In this embodiment of the present invention, the network device 1200 may further include: a program stored in the memory 1203 and executable on the processor 1201, when executed by the processor 1201, performs the steps of the methods provided by embodiments of the present invention.
In fig. 12, the bus architecture may include any number of interconnected buses and bridges, with various circuits linking one or more processors, represented by the processor 1201, and memory, represented by the memory 1203. 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 in connection with embodiments of the present invention. The bus interface provides an interface. The transceiver 1202 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the method embodiments, and can achieve the same technical effects, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (27)

1. A configuration method is applied to a terminal, and is characterized in that the method comprises the following steps:
receiving first indication information from a network device, wherein the first indication information is used for indicating a target demodulation reference signal (DMRS) configuration used by the terminal;
generating a target DMRS sequence according to the target DMRS configuration;
wherein the target DMRS configuration includes a first configuration scheme or a second configuration scheme of a DMRS of a second configuration type 2.
2. The method of claim 1,
the first configuration scheme and the second configuration scheme divide Resource Elements (REs) contained in each code division multiplexing group (CDM group) in the same manner.
3. The method of claim 1,
the first configuration scheme corresponds to a frequency domain orthogonal sequence of a first length, and the second configuration scheme corresponds to a frequency domain orthogonal sequence of a second length.
4. The method of claim 1, wherein the generating a target DMRS sequence according to the target DMRS configuration comprises:
and calculating to obtain the target DMRS sequence through a DMRS sequence generation algorithm corresponding to the target DMRS configuration.
5. The method of claim 4,
the DMRS sequence generation algorithm is to calculate the DMRS symbols of the DMRS ports through the frequency domain orthogonal sequence, the time domain orthogonal sequence and the DMRS symbol sequence.
6. The method of claim 5,
when the target DMRS is configured to be the first configuration scheme, the DMRS sequence generation algorithm is as follows:
Figure FDA0001937108300000011
k＝6n+k′+Δ；
k′＝0,1；
wherein ,
Figure FDA0001937108300000021
indicating DMRS ports mapped on subcarrier k, orthogonal frequency division multiplexing OFDM symbol l
Figure FDA0001937108300000022
The DMRS symbol of (a); μ represents a subcarrier spacing configuration;
Figure FDA0001937108300000023
Figure FDA0001937108300000024
for the starting OFDM symbol position carrying DMRS, l' is 0, 1; n is a natural number, j is 0,1, …, v-1, and v is the total number of DMRS ports; w is af(k') represents a frequency domain orthogonal sequence; w is at(l') represents a time-domain orthogonal sequence; r (2n + k') denotes a DMRS symbol sequence; Δ represents a subcarrier offset.
7. The method of claim 5,
when the target DMRS is configured to the second configuration scheme, the DMRS sequence generation algorithm is as follows:
Figure FDA0001937108300000025
Figure FDA0001937108300000027
Figure FDA0001937108300000026
k′＝0,1；k″＝0,1,2,3；
wherein ,
Figure FDA0001937108300000028
indicating DMRS ports mapped on subcarriers k, OFDM symbols l
Figure FDA0001937108300000029
The DMRS symbol of (a); μ represents a subcarrier spacing configuration;
Figure FDA00019371083000000210
Figure FDA00019371083000000211
for the starting OFDM symbol position carrying DMRS, l' is 0, 1; n is a natural number; j is 0,1, …, v-1, v is the DMRS port total number; w is af(k ") represents a frequency domain orthogonal sequence; w is at(l') represents a time-domain orthogonal sequence; r (2n + k ") denotes a DMRS symbol sequence; Δ represents a subcarrier offset.
8. The method of claim 1, wherein after the generating a target DMRS sequence according to the target DMRS configuration, the method further comprises:
receiving second indication information from a network device, wherein the second indication information is used for indicating a target DMRS port;
determining a target DMRS symbol from the target DMRS sequence according to the target DMRS port;
and mapping the target DMRS symbols on the RE corresponding to the target DMRS port, and transmitting the DMRS to the network equipment.
9. A configuration method applied to a network device is characterized by comprising the following steps:
sending first indication information to a terminal, wherein the first indication information is used for indicating a target DMRS configuration used by the terminal, and generating a target DMRS sequence by the terminal according to the target DMRS configuration;
wherein the target DMRS configuration includes a first configuration scheme or a second configuration scheme of a DMRS of configuration type 2.
10. The method of claim 9,
the first configuration scheme and the second configuration scheme divide Resource Elements (REs) contained in each code division multiplexing group (CDM group) in the same manner.
11. The method of claim 9,
the first configuration scheme corresponds to a frequency domain orthogonal sequence of a first length, and the second configuration scheme corresponds to a frequency domain orthogonal sequence of a second length.
12. The method of claim 9, wherein after the sending the first indication information to the terminal, the method further comprises:
sending second indication information to the terminal, wherein the second indication information is used for indicating a target DMRS port used by the terminal, determining a target DMRS symbol from the target DMRS sequence according to the target DMRS port by the terminal, and mapping the target DMRS symbol on an RE corresponding to the target DMRS port;
and receiving the DMRS sent by the terminal.
13. A terminal, comprising: a first transceiver and a first processor, wherein,
the first transceiver is used for receiving first indication information from a network device, wherein the first indication information is used for indicating a target DMRS configuration used by the terminal;
the first processor is configured to generate a target DMRS sequence according to the target DMRS configuration;
wherein the target DMRS configuration includes a first configuration scheme or a second configuration scheme of a DMRS of configuration type 2.
14. The terminal of claim 13,
the first configuration scheme and the second configuration scheme divide Resource Elements (REs) contained in each code division multiplexing group (CDM group) in the same manner.
15. The terminal of claim 13,
the first configuration scheme corresponds to a frequency domain orthogonal sequence of a first length, and the second configuration scheme corresponds to a frequency domain orthogonal sequence of a second length.
16. The terminal of claim 13,
the first processor is further configured to calculate the target DMRS sequence through a DMRS sequence generation algorithm corresponding to the target DMRS configuration.
17. The terminal of claim 16,
the DMRS sequence generation algorithm is to calculate the DMRS symbols of the DMRS ports through the frequency domain orthogonal sequence, the time domain orthogonal sequence and the DMRS symbol sequence.
18. The terminal of claim 17,
when the target DMRS is configured to be the first configuration scheme, the DMRS sequence generation algorithm is as follows:
Figure FDA0001937108300000041
k＝6n+k′+Δ；
k′＝0,1；
wherein ,
Figure FDA0001937108300000042
indicating DMRS ports mapped on subcarriers k, OFDM symbols l
Figure FDA0001937108300000043
The DMRS symbol of (a); μ represents a subcarrier spacing configuration;
Figure FDA0001937108300000044
Figure FDA0001937108300000045
for the starting OFDM symbol position carrying DMRS, l' is 0, 1; n is a natural number, j is 0,1, …, v-1, and v is the total number of DMRS ports; w is af(k') represents a frequency domain orthogonal sequence; w is at(l') represents a time-domain orthogonal sequence; r (2n + k') denotes a DMRS symbol sequence; Δ represents a subcarrier offset.
19. The terminal of claim 17,
when the target DMRS is configured to the second configuration scheme, the DMRS sequence generation algorithm is as follows:
Figure FDA0001937108300000046
Figure FDA0001937108300000047
Figure FDA0001937108300000048
k′＝0,1；k″＝0,1,2,3；
wherein ,
Figure FDA0001937108300000051
indicating DMRS ports mapped on subcarriers k, OFDM symbols l
Figure FDA0001937108300000052
The DMRS symbol of (a); μ represents a subcarrier spacing configuration;
Figure FDA0001937108300000053
Figure FDA0001937108300000054
for the starting OFDM symbol position carrying DMRS, l' is 0, 1; n is a natural number; j is 0,1, …, v-1, v is the DMRS port total number; w is af(k ") represents a frequency domain orthogonal sequence; w is at(l') represents a time-domain orthogonal sequence; r (2n + k ") denotes a DMRS symbol sequence; Δ represents a subcarrier offset.
20. The terminal of claim 13,
the first transceiver is further configured to receive second indication information from a network device, where the second indication information is used for indicating a target DMRS port;
the first processor is further configured to determine a target DMRS symbol from the target DMRS sequence based on the target DMRS port;
the first processor is further configured to map the target DMRS symbol on an RE corresponding to the target DMRS port, and transmit the DMRS to the network device.
21. A network device, comprising: a second transceiver and a second processor, wherein,
the second transceiver is used for sending first indication information to a terminal, the first indication information is used for indicating a target DMRS configuration used by the terminal, and a target DMRS sequence is generated by the terminal according to the target DMRS configuration;
wherein the target DMRS configuration includes a first configuration scheme or a second configuration scheme of a DMRS of configuration type 2.
22. The network device of claim 21,
the first configuration scheme and the second configuration scheme divide Resource Elements (REs) contained in each code division multiplexing group (CDM group) in the same manner.
23. The network device of claim 21,
the first configuration scheme corresponds to a frequency domain orthogonal sequence of a first length, and the second configuration scheme corresponds to a frequency domain orthogonal sequence of a second length.
24. The network device of claim 21,
the second transceiver is further used for sending second indication information to the terminal, wherein the second indication information is used for indicating a target DMRS port used by the terminal, determining a target DMRS symbol from the target DMRS sequence according to the target DMRS port by the terminal, and mapping the target DMRS symbol on an RE corresponding to the target DMRS port;
the second transceiver is further configured to receive the DMRS sent by the terminal.
25. A terminal comprising a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the configuration method according to any one of claims 1 to 8.
26. A network device comprising a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the configuration method according to any one of claims 9 to 12.
27. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the configuration method according to any one of claims 1 to 8 or the steps of the configuration method according to any one of claims 9 to 12.
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