CN112104444B - Reference signal sending method, terminal and network side equipment - Google Patents

Reference signal sending method, terminal and network side equipment Download PDF

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CN112104444B
CN112104444B CN201910521886.7A CN201910521886A CN112104444B CN 112104444 B CN112104444 B CN 112104444B CN 201910521886 A CN201910521886 A CN 201910521886A CN 112104444 B CN112104444 B CN 112104444B
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dmrs
symbol
reference signals
mapping operation
sent
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CN112104444A (en
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王森
韩双锋
周伟
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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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Priority to PCT/CN2020/096664 priority patent/WO2020253749A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03866—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling

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

Abstract

The invention provides a reference signal sending method, a terminal and network side equipment. The method comprises the following steps: carrying out symbol-level mapping operation processing on part of reference signals of demodulation reference signals DMRS to be sent to network side equipment to obtain the DMRS to be sent; and sending the DMRS to be sent to network side equipment. According to the method, symbol-level mapping operation processing is carried out on part of reference signals of the DMRS to be transmitted, and symbol-level mapping operation processing is not carried out on part of the reference signals, so that the purpose of increasing the number of the reference signals is achieved, and the problem that in the prior art, transmission of the DMRS cannot meet application requirements of the NOMA technology is solved.

Description

Reference signal sending method, terminal and network side equipment
Technical Field
The present invention relates to the field of wireless technologies, and in particular, to a method, a terminal, and a network side device for sending a reference signal.
Background
In the conventional wireless communication technology, a Demodulation Reference Signal (DMRS) of a Physical Uplink Shared Channel (PUSCH) includes two types, i.e., Type-1 and Type-2. The method comprises the steps that in one transmission unit, DMRSs in a Type-1 form are adopted to transmit reference signals of 8 orthogonal ports at most; the DMRS adopting the Type-2 form transmits reference signals of 12 orthogonal ports at most.
In addition, Non-Orthogonal Multiple Access (NOMA) technology is also introduced in the prior art communication standard. The NOMA technology can support the superposition transmission of multiple users on the same time-frequency resource, so the technology needs the support of more reference numbers, and the reliability of the transmission when more users transmit data simultaneously is met.
In the existing DMRS transmission, reference signals supporting at most 12 orthogonal ports far cannot meet the application requirements of the NOMA technology, and therefore, a larger number of reference signals needs to be designed.
Disclosure of Invention
The technical scheme of the invention aims to provide a reference signal sending method, a terminal and network side equipment, which can increase the number of reference signals sent compared with the prior art.
The embodiment of the invention provides a method for sending a reference signal, which is applied to a terminal, wherein the method comprises the following steps:
carrying out symbol-level mapping operation processing on part of reference signals of demodulation reference signals DMRS to be sent to network side equipment to obtain the DMRS to be sent;
and sending the DMRS to be sent to network side equipment.
Optionally, the sending method of the reference signal, where the performing symbol-level mapping operation processing on part of reference signals of a demodulation reference signal DMRS to be sent to a network side device includes:
and carrying out symbol-level interleaving or symbol-level scrambling processing on part of reference signals of the DMRS to be sent to the network side equipment.
Optionally, the reference signal transmission method includes, when performing symbol-level mapping operation processing on a part of reference signals of a demodulation reference signal DMRS to be transmitted to a network side device, the method further includes:
processing a reference signal which is subjected to symbol-level mapping operation processing and is to be sent to a demodulation reference signal DMRS of network side equipment by adopting a first Code Division Multiplexing (CDM) sequence;
processing a reference signal which is not subjected to symbol mapping operation and is to be sent to a demodulation reference signal DMRS of a target terminal by adopting a second CDM sequence;
wherein, the first CDM and the second CDM have a predetermined corresponding relationship.
Optionally, the reference signal is transmitted according to a predetermined sequence, where the predetermined correspondence is a reverse order relationship.
Optionally, the reference signal transmission method includes, when performing symbol-level mapping operation processing on a part of reference signals of a demodulation reference signal DMRS to be transmitted to a network side device, the method further includes:
DMRSs belonging to the same antenna port and not adjacent in frequency domain position are processed by CDM sequences in the same code division multiplexing CDM group.
Optionally, the sending method of the reference signal, wherein the performing symbol-level interleaving or symbol-level scrambling processing on the part of the reference signal of the DMRS to be sent to the network side device includes:
according to a pre-configured interleaving sequence, carrying out symbol-level interleaving processing on part of reference signals of a DMRS to be sent to network side equipment; or
And according to a pre-configured scrambling sequence, carrying out symbol-level scrambling processing on part of reference signals of the DMRS to be sent to the network side equipment.
The embodiment of the invention also provides a sending method of the reference signal, which is applied to network side equipment, wherein the method comprises the following steps:
receiving a demodulation reference signal DMRS sent by a terminal;
wherein, the part of reference signals of the DMRS are signals which are processed by symbol-level mapping operation.
Optionally, the reference signal transmission method is used, wherein the part of the reference signal of the DMRS is a signal subjected to symbol-level interleaving or symbol-level scrambling.
Optionally, the reference signal is transmitted, where the reference signal of the DMRS, which is subjected to symbol-level mapping operation, has a first code division multiplexing, CDM, sequence;
a reference signal of the DMRS, which is not subjected to symbol-level mapping operation processing, has a second Code Division Multiplexing (CDM) sequence;
wherein, the first CDM and the second CDM have a predetermined corresponding relationship.
Optionally, the reference signal is transmitted according to a predetermined sequence, where the predetermined correspondence is a reverse order relationship.
Optionally, the reference signal transmission method further includes, after receiving a demodulation reference signal DMRS transmitted by a terminal, the method further includes:
performing channel estimation on a reference signal which is not subjected to symbol-level mapping operation processing in the DMRS to obtain a first channel estimation result;
and determining a second channel estimation result for performing channel estimation on the reference signal subjected to the symbol-level mapping operation in the DMRS according to the first channel estimation result.
Optionally, the method for transmitting the reference signal further includes:
according to a pre-configured sequence for carrying out symbol-level mapping operation, carrying out channel estimation on a reference signal which is subjected to symbol-level mapping operation processing in the DMRS to obtain a channel estimation verification result;
and comparing the channel estimation verification result with the second channel estimation result, and determining a sequence adopted for carrying out symbol-level mapping operation processing on part of reference signals of the DMRS.
The embodiment of the present invention further provides a terminal, including a transceiver and a processor, wherein:
the processor is used for carrying out symbol-level mapping operation processing on part of reference signals of demodulation reference signals DMRS to be sent to the network side equipment to obtain the DMRS to be sent;
and the transceiver is used for transmitting the DMRS to be transmitted to network side equipment.
Optionally, in the terminal, the processing, by the processor, a part of reference signals of a demodulation reference signal DMRS to be sent to a network side device is subjected to symbol level mapping operation processing, and the processing includes:
and carrying out symbol-level interleaving or symbol-level scrambling processing on part of reference signals of the DMRS to be sent to the network side equipment.
Optionally, the terminal, wherein the processor is further configured to:
processing a reference signal which is subjected to symbol-level mapping operation processing and is to be sent to a demodulation reference signal DMRS of network side equipment by adopting a first Code Division Multiplexing (CDM) sequence;
processing a reference signal which is not subjected to symbol mapping operation and is to be sent to a demodulation reference signal DMRS of a target terminal by adopting a second CDM sequence;
wherein, the first CDM and the second CDM have a predetermined corresponding relationship.
Optionally, in the terminal, the preset correspondence is a reverse order relationship.
Optionally, the terminal, wherein the processor is further configured to:
DMRSs belonging to the same antenna port and not adjacent in frequency domain position are processed by CDM sequences in the same code division multiplexing CDM group.
Optionally, in the terminal, the processor performs symbol-level interleaving or symbol-level scrambling on a part of reference signals of a DMRS to be sent to a network-side device, and is specifically configured to:
according to a pre-configured interleaving sequence, carrying out symbol-level interleaving processing on part of reference signals of a DMRS to be sent to network side equipment; or
And according to a pre-configured scrambling sequence, carrying out symbol-level scrambling processing on part of reference signals of the DMRS to be sent to the network side equipment.
The embodiment of the present invention further provides a network side device, which includes a processor and a transceiver, where the transceiver is configured to:
receiving a demodulation reference signal DMRS sent by a terminal;
wherein, the part of reference signals of the DMRS are signals which are processed by symbol-level mapping operation.
Optionally, in the network side device, the partial reference signal of the DMRS is a signal subjected to symbol-level interleaving or symbol-level scrambling.
Optionally, the network side device, wherein the reference signal of the DMRS, which is subjected to symbol level mapping operation processing, has a first code division multiplexing, CDM, sequence;
a reference signal of the DMRS, which is not subjected to symbol-level mapping operation processing, has a second Code Division Multiplexing (CDM) sequence;
wherein, the first CDM and the second CDM have a predetermined corresponding relationship.
Optionally, in the network-side device, the preset correspondence is a reverse order relationship.
Optionally, in the network-side device, after the transceiver receives the DMRS sent by the terminal, the processor is configured to:
performing channel estimation on a reference signal which is not subjected to symbol-level mapping operation processing in the DMRS to obtain a first channel estimation result;
and determining a second channel estimation result for performing channel estimation on the reference signal subjected to the symbol-level mapping operation in the DMRS according to the first channel estimation result.
Optionally, the network-side device, wherein the processor is further configured to:
according to a pre-configured sequence for carrying out symbol-level mapping operation, carrying out channel estimation on a reference signal which is subjected to symbol-level mapping operation processing in the DMRS to obtain a channel estimation verification result;
and comparing the channel estimation verification result with the second channel estimation result, and determining a sequence adopted for carrying out symbol-level mapping operation processing on part of reference signals of the DMRS.
The embodiment of the invention also provides a terminal, which comprises a memory, a processor and a computer program which is stored on the memory and can be run on the processor; wherein the processor implements the reference signal transmission method as described in any one of the above when executing the program.
The embodiment of the invention also provides network side equipment, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor; wherein the processor implements the reference signal transmission method as described in any one of the above when executing the program.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is configured to, when executed by a processor, implement a step in a method for transmitting a reference signal as described in any one of the above, or implement a step in a method for transmitting a reference signal as described in any one of the above.
At least one of the above technical solutions of the present invention has the following beneficial effects:
according to the method for transmitting the reference signals, the purpose of increasing the number of the reference signals is achieved by carrying out symbol-level mapping operation processing on part of the reference signals of the DMRS to be transmitted and not carrying out symbol-level mapping operation processing on part of the reference signals, and the problem that the transmission of the DMRS in the prior art cannot meet the application requirements of the NOMA technology is solved.
Drawings
Fig. 1 is a schematic structural diagram of a system architecture applied to a reference signal transmission method according to the present invention;
fig. 2 is a flowchart illustrating a method for transmitting a reference signal according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a reference signal structure;
fig. 4 is a flowchart illustrating another embodiment of a method for transmitting a reference signal according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of one embodiment of a terminal according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of one implementation of the network-side device according to the embodiment of the present invention;
fig. 7 is a schematic structural diagram of another embodiment of the terminal according to the embodiment of the present invention;
fig. 8 is a schematic structural diagram of another implementation manner of the network-side device according to the embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The sending method of the reference signal according to the embodiment of the present invention is applied to a wireless communication system, which may be a 5G system, an Evolved Long Term Evolution (lte) system, or a subsequent lte communication system. Fig. 1 is a schematic structural diagram of a wireless communication system according to an embodiment of the present invention. As shown in fig. 1, the wireless communication system may include: network side equipment and user equipment (or terminals). For example, the terminal is denoted as UE 20, the network side device may be denoted as base station 10, and UE 20 may be connected to base station 10. In practical applications, the connections between the above devices may be wireless connections, and fig. 1 illustrates the connections between the devices by solid lines for convenience and convenience in visual representation.
The base station 10 provided in the embodiment of the present invention may be a commonly used base station, an evolved node base station (eNB), or a network side device in a 5G system (for example, a next generation base station (gNB), a Transmission and Reception Point (TRP), or a cell, and the like.
The user equipment provided by the embodiment of the invention can be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like.
In order to solve the problem that in the transmission of the DMRS in the prior art, since most of reference signals supporting 12 orthogonal ports cannot meet the application requirements of the NOMA technology, embodiments of the present invention provide a method for transmitting reference signals, which achieves the purpose of increasing the number of reference signals by performing symbol-level mapping operation on part of reference signals of the DMRS to be transmitted, and solves the problem that in the transmission of the DMRS in the prior art, the application requirements of the NOMA technology cannot be met.
As shown in fig. 2, a method for sending a reference signal according to an embodiment of the present invention is applied to a terminal, and includes:
s210, performing symbol-level mapping operation processing on part of reference signals of demodulation reference signals DMRS to be sent to network side equipment to obtain the DMRS to be sent;
and S220, transmitting the DMRS to be transmitted to network side equipment.
In step S210, only a part of reference signals of the DMRS to be transmitted to the network side device is subjected to symbol level mapping operation, and another part of reference signals of the DMRS to be transmitted to the network side device is not subjected to symbol level mapping operation.
Optionally, in step S210, performing symbol-level mapping operation processing on a part of reference signals of a demodulation reference signal DMRS to be transmitted to a target terminal, including:
and carrying out symbol-level interleaving or symbol-level scrambling processing on part of reference signals of the DMRS to be sent to the network side equipment.
By adopting the mode, part of the reference signals of the DMRS to be transmitted which are transmitted to the network side equipment are subjected to symbol level interleaving or symbol level scrambling processing, and part of the reference signals are not subjected to symbol level interleaving or symbol level scrambling processing.
Referring to fig. 3, taking transmission of DMRS in Type-2 as an example, in a non-orthogonal multiple access transmission technique, DMRSs sent to a network side device may be superimposed on the same time-frequency resource, and DMRSs of different terminals may be distinguished by different orthogonal codes.
For example, in fig. 3, for a DMRS 1 transmitted by a terminal K, a first part of reference signals 11 in the DMRS 1 is not subjected to symbol-level interleaving or symbol-level scrambling, and a second part of reference signals 12 in the DMRS 1 is subjected to symbol-level interleaving or symbol-level scrambling; similarly, for DMRSs sent by other terminals, part of the reference signals are not subjected to symbol-level interleaving or symbol-level scrambling, and the other part of the reference signals are subjected to symbol-level interleaving or symbol-level scrambling.
With reference to fig. 3, in the above manner, on the same time-frequency resource, the terminal performs symbol-level interleaving or symbol-level scrambling on part of the reference signals sent to the network-side device, and the other part of the reference signals is not subjected to symbol-level interleaving or symbol-level scrambling, so that DMRSs sent by different terminals can be distinguished from each other by the manner, and thus the number of the reference signals is increased, so as to meet the requirement of more terminals for data transmission at the same time.
In this embodiment of the present invention, in step 210, when performing symbol-level mapping operation processing on part of reference signals of a demodulation reference signal DMRS to be sent to a network side device, the method further includes:
DMRSs belonging to the same antenna port and not adjacent in frequency domain position are processed with a Code Division Multiplexing (CDM) sequence in the same CDM group.
As shown in connection with fig. 3, DMRS 1 and DMRS 2 belong to two DMRSs of the same antenna port and are not adjacent in frequency domain position, and thus the two DMRSs employ CDM sequences in the same CDM group.
In the embodiment of the present invention, the time-frequency resource location when the terminal transmits the DMRS may be determined according to a common manner, which is not described in detail herein.
In addition, in this embodiment of the present invention, optionally, in step S210, when performing symbol-level mapping operation processing on part of reference signals of a demodulation reference signal DMRS to be sent to a network side device, the method further includes:
processing a reference signal which is subjected to symbol-level mapping operation processing and is to be sent to a demodulation reference signal DMRS of network side equipment by adopting a first Code Division Multiplexing (CDM) sequence;
processing a reference signal which is not subjected to symbol-level mapping operation and is to be sent to a demodulation reference signal DMRS of the network side equipment by adopting a second CDM sequence;
wherein, the first CDM and the second CDM have a predetermined corresponding relationship.
Optionally, the preset corresponding relationship is a reverse order relationship.
It should be noted that the preset corresponding relationship is not limited to be only a reverse order relationship, and may be other corresponding relationships as long as the corresponding relationship meets the preset rule.
By using the preset corresponding relationship between the first CDM and the second CDM, the network side device can effectively estimate the channel of part of the reference signals subjected to symbol-level interleaving or symbol-level scrambling in the DMRS when performing channel estimation.
In addition, in step S210, in the embodiment of the present invention, performing symbol-level interleaving or symbol-level scrambling processing on part of reference signals of a DMRS to be sent to a network device includes:
according to a pre-configured interleaving sequence, carrying out symbol-level interleaving processing on part of reference signals of a DMRS to be sent to network side equipment; or
And according to a pre-configured scrambling sequence, carrying out symbol-level scrambling processing on part of reference signals of the DMRS to be sent to the network side equipment.
Optionally, by reordering symbol sequences of part of reference signals of a DMRS to be sent to a network side device, a preconfigured interleaving sequence may be obtained; the pre-configured scrambling sequence can be obtained by adding scrambling information to the symbol sequence of part of the reference signals of the DMRS to be transmitted to the network side device.
For example, the pre-configured scrambling sequence may be generated based on an m-sequence. Specifically, a polynomial may be generated based on the m-sequence:
Figure BDA0002096969300000091
Figure BDA0002096969300000092
from above f1(x) And f1(x) The characteristic polynomial m of the m sequence can be obtainedI(i) And mQ(i)；
According to mI(i) And mQ(i) The required complex scrambling sequence can be obtained as follows:
Figure BDA0002096969300000093
wherein f is1(x) And f2(x) Respectively expressed as: a polynomial generated from the m-sequence;
x、x2、……xnexpressed as: polynomial f1(x) And f2(x) The parameter item in (1);
Figure BDA0002096969300000094
expressed as: polynomial f1(x) The coefficient term of (1);
Figure BDA0002096969300000095
expressed as: polynomial f2(x) The coefficient term of (1);
Sc(i) is a scrambling sequence calculated from the m-sequence.
It is to be understood that the manner in which the interleaving sequence and the scrambling sequence are determined is not limited to include only the above-described examples, and that each possible embodiment is not illustrated here.
According to the method for sending the reference signals, the number of the reference signals can be increased by carrying out symbol-level mapping operation processing on part of the reference signals of the DMRS to be sent, and the problem that the transmission of the DMRS in the prior art cannot meet the application requirement of the NOMA technology is solved.
An embodiment of the present invention further provides a method for sending a reference signal, which is applied to a network side device, and as shown in fig. 4, the method includes:
s410, receiving a demodulation reference signal DMRS sent by a terminal;
wherein, the part of reference signals of the DMRS are signals which are processed by symbol-level mapping operation.
According to the method for transmitting the reference signals, the part of the reference signals of the DMRS received by the network side equipment are signals subjected to symbol-level mapping operation processing, and the part of the reference signals of the DMRS required to be transmitted is subjected to the symbol-level mapping operation processing, so that the purpose of increasing the number of the reference signals is achieved, and the problem that the transmission of the DMRS in the prior art cannot meet the application requirements of the NOMA technology is solved.
Optionally, the part of the reference signals of the DMRS are signals subjected to symbol-level interleaving or symbol-level scrambling processing.
Optionally, a part of the reference signals of the DMRS, which are subjected to symbol mapping operation processing, have a first code division multiplexing, CDM, sequence;
part of the reference signals of the DMRS, which are not subjected to symbol mapping operation processing, have a second Code Division Multiplexing (CDM) sequence;
wherein, the first CDM and the second CDM have a predetermined corresponding relationship.
Optionally, the preset corresponding relationship is a reverse order relationship.
By making the first CDM and the second CDM have a preset corresponding relationship, the network side device can support link adaptation under Grant-Free (GF) transmission with lower blind detection complexity when performing channel estimation.
Optionally, after receiving the DMRS, sent by the network-side device, the method further includes:
performing channel estimation on a reference signal which is not subjected to symbol-level mapping operation processing in the DMRS to obtain a first channel estimation result;
and determining a second channel estimation result for performing channel estimation on the reference signal subjected to the symbol-level mapping operation in the DMRS according to the first channel estimation result.
It can be understood that, in the DMRS transmitted by the terminal through an antenna port, the reference signal that is not subjected to the symbol level mapping operation and the reference signal that is subjected to the symbol level mapping operation use the same time domain resource location, so that a second channel estimation result when the reference signal that is subjected to the symbol level mapping operation is subjected to channel estimation can be determined according to a first channel estimation result obtained by performing channel estimation on the reference signal that is not subjected to the symbol level mapping operation.
Additionally, optionally, the method further comprises:
according to a pre-configured sequence for carrying out symbol-level mapping operation, carrying out channel estimation on a reference signal which is subjected to symbol-level mapping operation processing in the DMRS to obtain a channel estimation verification result;
and comparing the channel estimation verification result with the second channel estimation result, and determining a sequence adopted for carrying out symbol-level mapping operation processing on part of reference signals of the DMRS.
In the embodiment of the invention, part of reference signals of the DMRS for carrying out symbol mapping operation processing have a first Code Division Multiplexing (CDM) sequence; part of the reference signals of the DMRS, which are not subjected to symbol mapping operation processing, have a second Code Division Multiplexing (CDM) sequence; the first CDM and the second CDM have a preset corresponding relationship, and when the reference signal subjected to the symbol-level mapping operation processing in the DMRS is subjected to channel estimation according to the preset sequence, the channel at the position of the reference signal subjected to the symbol-level interleaving pattern or the symbol-level scrambling processing can be accurately estimated, so that the Grant-Free can be supported by adopting lower blind detection complexity, and the link adaptation under transmission can be realized.
An embodiment of the present invention further provides a terminal, as shown in fig. 5, where the terminal 500 includes a transceiver 510 and a processor 520, where:
the processor 520 is configured to perform symbol-level mapping operation processing on a part of reference signals of a demodulation reference signal DMRS to be sent to a network side device, so as to obtain a DMRS to be sent;
the transceiver 510 is configured to send the DMRS to be sent to a network side device.
Optionally, in the terminal, the processing unit 520 performs symbol level mapping operation processing on a part of reference signals of a demodulation reference signal DMRS to be sent to a network side device, and includes:
and carrying out symbol-level interleaving or symbol-level scrambling processing on part of reference signals of the DMRS to be sent to the network side equipment.
Optionally, the terminal, wherein the processor 520 is further configured to:
processing a reference signal which is subjected to symbol-level mapping operation processing and is to be sent to a demodulation reference signal DMRS of network side equipment by adopting a first Code Division Multiplexing (CDM) sequence;
processing a reference signal which is not subjected to symbol mapping operation and is to be sent to a demodulation reference signal DMRS of a target terminal by adopting a second CDM sequence;
wherein, the first CDM and the second CDM have a predetermined corresponding relationship.
Optionally, in the terminal, the preset correspondence is a reverse order relationship.
Optionally, the terminal, wherein the processor 520 is further configured to:
DMRSs belonging to the same antenna port and not adjacent in frequency domain position are processed by CDM sequences in the same code division multiplexing CDM group.
Optionally, in the terminal, the processor 520 performs symbol-level interleaving or symbol-level scrambling processing on a part of reference signals of a DMRS to be sent to a network-side device, and is specifically configured to:
according to a pre-configured interleaving sequence, carrying out symbol-level interleaving processing on part of reference signals of a DMRS to be sent to network side equipment; or
And according to a pre-configured scrambling sequence, carrying out symbol-level scrambling processing on part of reference signals of the DMRS to be sent to the network side equipment.
An embodiment of the present invention further provides a network-side device, as shown in fig. 6, where the network-side device 600 includes a transceiver 610 and a processor 620, where the transceiver 610 is configured to:
receiving a demodulation reference signal DMRS sent by a terminal;
wherein, the part of reference signals of the DMRS are signals which are processed by symbol-level mapping operation.
Optionally, in the network side device, the partial reference signal of the DMRS is a signal subjected to symbol-level interleaving or symbol-level scrambling.
Optionally, the network side device, wherein the reference signal of the DMRS, which is subjected to symbol level mapping operation processing, has a first code division multiplexing, CDM, sequence;
a reference signal of the DMRS, which is not subjected to symbol-level mapping operation processing, has a second Code Division Multiplexing (CDM) sequence;
wherein, the first CDM and the second CDM have a predetermined corresponding relationship.
Optionally, in the network-side device, the preset correspondence is a reverse order relationship.
Optionally, in the network-side device, after the transceiver 610 receives a DMRS sent by a terminal, the processor 620 is configured to:
performing channel estimation on a reference signal which is not subjected to symbol-level mapping operation processing in the DMRS to obtain a first channel estimation result;
and determining a second channel estimation result for performing channel estimation on the reference signal subjected to the symbol-level mapping operation in the DMRS according to the first channel estimation result.
Optionally, the network-side device, wherein the processor 620 is further configured to:
according to a pre-configured sequence for carrying out symbol-level mapping operation, carrying out channel estimation on a reference signal which is subjected to symbol-level mapping operation processing in the DMRS to obtain a channel estimation verification result;
and comparing the channel estimation verification result with the second channel estimation result, and determining a sequence adopted for carrying out symbol-level mapping operation processing on part of reference signals of the DMRS.
Another aspect of the embodiments of the present invention further provides a terminal, as shown in fig. 7, including: a processor 701; and a memory 703 connected to the processor 701 through a bus interface 702, where the memory 703 is used to store programs and data used by the processor 701 in executing operations, and the processor 701 calls and executes the programs and data stored in the memory 703.
The transceiver 704 is connected to the bus interface 702, and is configured to receive and transmit data under the control of the processor 701, and specifically, the processor 701 is configured to read a program in the memory 703 and execute the following processes:
carrying out symbol-level mapping operation processing on part of reference signals of demodulation reference signals DMRS to be sent to network side equipment to obtain the DMRS to be sent;
and sending the DMRS to be sent to network side equipment.
Optionally, in the terminal, the processing, by the processor 701, performing symbol level mapping operation processing on a part of reference signals of a demodulation reference signal DMRS to be sent to a network side device includes:
and carrying out symbol-level interleaving or symbol-level scrambling processing on part of reference signals of the DMRS to be sent to the network side equipment.
Optionally, in the terminal, when the processor 701 performs symbol level mapping operation processing on a part of reference signals of a demodulation reference signal DMRS to be sent to a network side device, the processor is further configured to:
processing a reference signal which is subjected to symbol-level mapping operation processing and is to be sent to a demodulation reference signal DMRS of network side equipment by adopting a first Code Division Multiplexing (CDM) sequence;
processing a reference signal which is not subjected to symbol mapping operation and is to be sent to a demodulation reference signal DMRS of a target terminal by adopting a second CDM sequence;
wherein, the first CDM and the second CDM have a predetermined corresponding relationship.
Optionally, in the terminal, the preset correspondence is a reverse order relationship.
Optionally, in the terminal, when the processor 701 performs symbol level mapping operation processing on a part of reference signals of a demodulation reference signal DMRS to be sent to a network side device, the processor is further configured to:
DMRSs belonging to the same antenna port and not adjacent in frequency domain position are processed by CDM sequences in the same code division multiplexing CDM group.
Optionally, in the terminal, the processing unit 701 performs symbol-level interleaving or symbol-level scrambling processing on a part of reference signals of a DMRS to be sent to a network side device, including:
according to a pre-configured interleaving sequence, carrying out symbol-level interleaving processing on part of reference signals of a DMRS to be sent to network side equipment; or
And according to a pre-configured scrambling sequence, carrying out symbol-level scrambling processing on part of reference signals of the DMRS to be sent to the network side equipment.
It should be noted that in fig. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 701 and various circuits of memory represented by memory 703 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 704 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 user interface 705 may also be an interface capable of interfacing with a desired device for different terminals, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 701 is responsible for managing the bus architecture and general processing, and the memory 703 may store data used by the processor 701 in performing operations.
Those skilled in the art will understand that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program includes instructions for executing part or all of the steps of the above methods; and the program may be stored in a readable storage medium, which may be any form of storage medium.
An embodiment of the present invention further provides a network-side device, as shown in fig. 8, including a transceiver 801, a memory 802, a processor 800, and a program stored in the memory 802 and executable on the processor 800; processor 800 invokes and executes programs and data stored in memory 802.
The transceiver 801 receives and transmits data under the control of the processor 800, and in particular, the processor 800 is configured to read a program in the memory 802 and perform the following processes:
receiving a demodulation reference signal DMRS sent by a terminal;
wherein, the part of reference signals of the DMRS are signals which are processed by symbol-level mapping operation.
Optionally, in the network side device, the partial reference signal of the DMRS is a signal subjected to symbol-level interleaving or symbol-level scrambling.
Optionally, the network side device, wherein the reference signal of the DMRS, which is subjected to symbol level mapping operation processing, has a first code division multiplexing, CDM, sequence;
a reference signal of the DMRS, which is not subjected to symbol-level mapping operation processing, has a second Code Division Multiplexing (CDM) sequence;
wherein, the first CDM and the second CDM have a predetermined corresponding relationship.
Optionally, in the network-side device, the preset correspondence is a reverse order relationship.
Optionally, in the network-side device, after receiving the DMRS sent by the terminal, the processor 800 is further configured to:
performing channel estimation on a reference signal which is not subjected to symbol-level mapping operation processing in the DMRS to obtain a first channel estimation result;
and determining a second channel estimation result for performing channel estimation on the reference signal subjected to the symbol-level mapping operation in the DMRS according to the first channel estimation result.
Optionally, the network-side device, wherein the processor 800 is further configured to:
according to a pre-configured sequence for carrying out symbol-level mapping operation, carrying out channel estimation on a reference signal which is subjected to symbol-level mapping operation processing in the DMRS to obtain a channel estimation verification result;
and comparing the channel estimation verification result with the second channel estimation result, and determining a sequence adopted for carrying out symbol-level mapping operation processing on part of reference signals of the DMRS.
Where in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 800 and various circuits of memory represented by memory 802 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 801 may be a number of elements including a transmitter and a receiver providing a means for communicating with various other apparatus over a transmission medium. The processor 800 is responsible for managing the bus architecture and general processing, and the memory 802 may store data used by the processor 800 in performing operations.
Those skilled in the art will understand that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program includes instructions for executing part or all of the steps of the above methods; and the program may be stored in a readable storage medium, which may be any form of storage medium.
In addition, the specific embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the steps in the method for transmitting the reference signal according to any one of the above.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (17)

1. A method for sending a reference signal, applied to a terminal, is characterized in that the method comprises:
carrying out symbol-level mapping operation processing on part of reference signals of demodulation reference signals (DMRS) to be sent to network side equipment, carrying out no symbol-level mapping operation processing on part of reference signals of the DMRS to be sent to the network side equipment, carrying out symbol-level mapping operation processing on reference signals of the demodulation reference signals (DMRS) to be sent to the network side equipment, carrying out first Code Division Multiplexing (CDM) sequence processing on the reference signals, carrying out no symbol-mapping operation processing on the reference signals of the DMRS to be sent to a target terminal, carrying out second CDM sequence processing on the reference signals, and obtaining the DMRS to be sent; the first CDM and the second CDM have a preset corresponding relationship;
sending the DMRS to be sent to network side equipment;
the symbol-level mapping operation processing is performed on part of reference signals of a demodulation reference signal DMRS to be sent to network side equipment, and comprises the following steps:
according to a pre-configured interleaving sequence, carrying out symbol-level interleaving processing on part of reference signals of a DMRS to be sent to network side equipment; or
According to a pre-configured scrambling sequence, carrying out symbol-level scrambling processing on part of reference signals of a DMRS to be sent to network side equipment;
the method comprises the steps of reordering symbol sequences of part of reference signals of a DMRS to be sent to network side equipment to obtain a pre-configured interleaving sequence, and adding scrambling information to the symbol sequences of the part of the reference signals of the DMRS to be sent to the network side equipment to obtain a pre-configured scrambling sequence.
2. The method according to claim 1, wherein the predetermined correspondence relationship is a reverse order relationship.
3. The method according to claim 1, wherein when performing symbol-level mapping operation processing on part of reference signals of a demodulation reference signal (DMRS) to be transmitted to a network-side device, the method further comprises:
DMRSs belonging to the same antenna port and not adjacent in frequency domain position are processed by CDM sequences in the same code division multiplexing CDM group.
4. A method for sending a reference signal is applied to a network side device, and is characterized in that the method comprises the following steps:
receiving a demodulation reference signal DMRS sent by a terminal;
the DMRS part of the reference signals are signals which are subjected to symbol-level mapping operation processing, and the DMRS part of the reference signals are signals which are not subjected to symbol-level mapping operation processing; a reference signal of the DMRS, which is subjected to symbol-level mapping operation processing, has a first Code Division Multiplexing (CDM) sequence; a reference signal of the DMRS, which is not subjected to symbol-level mapping operation processing, has a second Code Division Multiplexing (CDM) sequence; wherein, the first CDM and the second CDM have a preset corresponding relationship;
the part of the reference signals of the DMRS, which are subjected to the symbol-level mapping operation, are signals subjected to symbol-level interleaving processing according to a pre-configured interleaving sequence; or the part of the reference signals of the DMRS, which are subjected to the symbol-level mapping operation, are signals subjected to symbol-level scrambling processing according to a pre-configured scrambling sequence;
the method comprises the steps of reordering symbol sequences of part of reference signals of a DMRS to be sent to network side equipment to obtain a pre-configured interleaving sequence, and adding scrambling information to the symbol sequences of the part of the reference signals of the DMRS to be sent to the network side equipment to obtain a pre-configured scrambling sequence.
5. The method according to claim 4, wherein the predetermined correspondence relationship is a reverse order relationship.
6. The method according to claim 4, wherein after receiving a demodulation reference signal (DMRS) transmitted by a terminal, the method further comprises:
performing channel estimation on a reference signal which is not subjected to symbol-level mapping operation processing in the DMRS to obtain a first channel estimation result;
and determining a second channel estimation result for performing channel estimation on the reference signal subjected to the symbol-level mapping operation in the DMRS according to the first channel estimation result.
7. The method according to claim 6, wherein the method further comprises:
according to a pre-configured sequence for carrying out symbol-level mapping operation, carrying out channel estimation on a reference signal which is subjected to symbol-level mapping operation processing in the DMRS to obtain a channel estimation verification result;
and comparing the channel estimation verification result with the second channel estimation result, and determining a sequence adopted for carrying out symbol-level mapping operation processing on part of reference signals of the DMRS.
8. A terminal comprising a transceiver and a processor, characterized in that:
the processor is used for carrying out symbol-level mapping operation processing on part of reference signals of the DMRS to be sent to the network side equipment, adopting a first Code Division Multiplexing (CDM) sequence to process reference signals of the DMRS to be sent to the network side equipment, carrying out symbol-level mapping operation processing on the reference signals of the DMRS to be sent to the network side equipment, and adopting a second CDM sequence to process reference signals of the DMRS to be sent to the target terminal, which are not subjected to symbol mapping operation processing, so as to obtain the DMRS to be sent; the first CDM and the second CDM have a preset corresponding relationship;
the transceiver is used for transmitting the DMRS to be transmitted to network side equipment;
the processor performs symbol-level mapping operation processing on part of reference signals of demodulation reference signals DMRS to be sent to network side equipment, and the symbol-level mapping operation processing comprises the following steps:
according to a pre-configured interleaving sequence, carrying out symbol-level interleaving processing on part of reference signals of a DMRS to be sent to network side equipment; or
According to a pre-configured scrambling sequence, carrying out symbol-level scrambling processing on part of reference signals of a DMRS to be sent to network side equipment;
the method comprises the steps of reordering symbol sequences of part of reference signals of a DMRS to be sent to network side equipment to obtain a pre-configured interleaving sequence, and adding scrambling information to the symbol sequences of the part of the reference signals of the DMRS to be sent to the network side equipment to obtain a pre-configured scrambling sequence.
9. The terminal of claim 8, wherein the predetermined correspondence relationship is a reverse order relationship.
10. The terminal of claim 8, wherein the processor is further configured to:
DMRSs belonging to the same antenna port and not adjacent in frequency domain position are processed by CDM sequences in the same code division multiplexing CDM group.
11. A network-side device comprising a processor and a transceiver, wherein the transceiver is configured to:
receiving a demodulation reference signal DMRS sent by a terminal;
the DMRS part of the reference signals are signals which are subjected to symbol-level mapping operation processing, and the DMRS part of the reference signals are signals which are not subjected to symbol-level mapping operation processing; a reference signal of the DMRS, which is subjected to symbol-level mapping operation processing, has a first Code Division Multiplexing (CDM) sequence; a reference signal of the DMRS, which is not subjected to symbol-level mapping operation processing, has a second Code Division Multiplexing (CDM) sequence; wherein, the first CDM and the second CDM have a preset corresponding relationship;
the part of the reference signals of the DMRS, which are subjected to the symbol-level mapping operation, are signals subjected to symbol-level interleaving processing according to a pre-configured interleaving sequence; or the part of the reference signals of the DMRS, which are subjected to the symbol-level mapping operation, are signals subjected to symbol-level scrambling processing according to a pre-configured scrambling sequence;
the method comprises the steps of reordering symbol sequences of part of reference signals of a DMRS to be sent to network side equipment to obtain a pre-configured interleaving sequence, and adding scrambling information to the symbol sequences of the part of the reference signals of the DMRS to be sent to the network side equipment to obtain a pre-configured scrambling sequence.
12. The network-side device of claim 11, wherein the predetermined correspondence relationship is a reverse order relationship.
13. The network-side device of claim 11, wherein after the transceiver receives the DMRS transmitted by the terminal, the processor is configured to:
performing channel estimation on a reference signal which is not subjected to symbol-level mapping operation processing in the DMRS to obtain a first channel estimation result;
and determining a second channel estimation result for performing channel estimation on the reference signal subjected to the symbol-level mapping operation in the DMRS according to the first channel estimation result.
14. The network-side device of claim 13, wherein the processor is further configured to:
according to a pre-configured sequence for carrying out symbol-level mapping operation, carrying out channel estimation on a reference signal which is subjected to symbol-level mapping operation processing in the DMRS to obtain a channel estimation verification result;
and comparing the channel estimation verification result with the second channel estimation result, and determining a sequence adopted for carrying out symbol-level mapping operation processing on part of reference signals of the DMRS.
15. A terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor; wherein the processor implements the reference signal transmission method according to any one of claims 1 to 3 when executing the program.
16. A network-side device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the processor executes the program to implement the reference signal transmission method according to any one of claims 4 to 7.
17. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps in the method for transmitting a reference signal according to any one of claims 1 to 3, or carries out the steps in the method for transmitting a reference signal according to any one of claims 4 to 7.
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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023186158A1 (en) * 2022-04-02 2023-10-05 维沃移动通信有限公司 Demodulation reference signal transmission method and apparatus, terminal, and network side device

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102158319A (en) * 2010-02-12 2011-08-17 中兴通讯股份有限公司 Method and device for pre-encoding based on hybrid multiplex demodulation reference symbols
CN102271109A (en) * 2010-06-07 2011-12-07 中兴通讯股份有限公司 Demodulation reference signal mapping method and system
CN103037514A (en) * 2011-09-30 2013-04-10 上海贝尔股份有限公司 Method and device for transmitting demodulation reference signal in communication network
CN107425947A (en) * 2016-05-24 2017-12-01 北京三星通信技术研究有限公司 Reference signal and the mapping method and equipment of multiple access access-in resource
CN109474407A (en) * 2017-09-08 2019-03-15 维沃移动通信有限公司 Processing method, terminal and the network side equipment of physical downlink control channel
CN109756315A (en) * 2017-11-06 2019-05-14 北京三星通信技术研究有限公司 Configure the method for reference signal, the method and apparatus of data transmission
CN109842471A (en) * 2017-11-24 2019-06-04 维沃移动通信有限公司 Transmission method, the network equipment and the terminal of demodulated reference signal DMRS
CN111771348A (en) * 2018-02-16 2020-10-13 高通股份有限公司 DMRS indication in NR for transmission scheduled by fallback DCI
CN112088562A (en) * 2018-05-09 2020-12-15 高通股份有限公司 Service and format indication techniques for downlink control information

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102202027B (en) * 2010-03-26 2015-08-12 中兴通讯股份有限公司 A kind of production method of pilot frequency sequence and device
US20160029351A1 (en) * 2013-03-13 2016-01-28 Sharp Kabushiki Kaisha Base station, terminal, communication system, communication method, and integrated circuit
CN106559363B (en) * 2015-09-25 2020-06-05 电信科学技术研究院 Demodulation reference signal transmission method, channel estimation method and device
EP3468061A1 (en) * 2017-10-03 2019-04-10 Panasonic Intellectual Property Corporation of America Signaling aspects for indication of co-scheduled dmrs ports in mu-mimo

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102158319A (en) * 2010-02-12 2011-08-17 中兴通讯股份有限公司 Method and device for pre-encoding based on hybrid multiplex demodulation reference symbols
CN102271109A (en) * 2010-06-07 2011-12-07 中兴通讯股份有限公司 Demodulation reference signal mapping method and system
CN103037514A (en) * 2011-09-30 2013-04-10 上海贝尔股份有限公司 Method and device for transmitting demodulation reference signal in communication network
CN107425947A (en) * 2016-05-24 2017-12-01 北京三星通信技术研究有限公司 Reference signal and the mapping method and equipment of multiple access access-in resource
CN109474407A (en) * 2017-09-08 2019-03-15 维沃移动通信有限公司 Processing method, terminal and the network side equipment of physical downlink control channel
CN109756315A (en) * 2017-11-06 2019-05-14 北京三星通信技术研究有限公司 Configure the method for reference signal, the method and apparatus of data transmission
CN109842471A (en) * 2017-11-24 2019-06-04 维沃移动通信有限公司 Transmission method, the network equipment and the terminal of demodulated reference signal DMRS
CN111771348A (en) * 2018-02-16 2020-10-13 高通股份有限公司 DMRS indication in NR for transmission scheduled by fallback DCI
CN112088562A (en) * 2018-05-09 2020-12-15 高通股份有限公司 Service and format indication techniques for downlink control information

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Huawei等.R1-1801363 "Discussion on DMRS design for NoMA with large number of users".2018, *

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