CN111490862B - Uplink demodulation reference signal configuration method, device, medium and equipment - Google Patents
Uplink demodulation reference signal configuration method, device, medium and equipment Download PDFInfo
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- CN111490862B CN111490862B CN201910079678.6A CN201910079678A CN111490862B CN 111490862 B CN111490862 B CN 111490862B CN 201910079678 A CN201910079678 A CN 201910079678A CN 111490862 B CN111490862 B CN 111490862B
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
Abstract
The present invention relates to the field of wireless technologies, and in particular, to a method, an apparatus, a medium, and a device for configuring an uplink demodulation reference signal. According to the scheme provided by the embodiment of the invention, the RRC signaling sent by the network side to the terminal side can comprise the DMRS configuration indication information, wherein the DMRS configuration indication information is used for indicating whether the terminal enables the second configuration scheme corresponding to the uplink demodulation reference signal configuration type 1. The terminal performs DMRS configuration through the second configuration scheme, so that the problem that the port number borne by the first configuration scheme corresponding to the Type-1DMRS is limited can be solved.
Description
Technical Field
The present invention relates to the field of wireless technologies, and in particular, to a method, an apparatus, a medium, and a device for configuring an uplink demodulation reference signal (DMRS, demodulation Reference Signal).
Background
In the fifth generation mobile communication system (5G) standard, in a DMRS configuration scheme of a physical uplink shared channel (PUSCH, physical Uplink Share Channel), that is, a first configuration scheme corresponding to an uplink demodulation reference signal configuration Type1 (Type-1 DMRS), up to 8 DMRS ports can be carried on time-frequency resources of 1 physical resource block (PRB, physical Resource Block) and 2 orthogonal frequency division multiplexing (OFDM, orthogonal Frequency Division Multiplexing) symbols. As shown in fig. 1, taking code division multiplexing group 0 (CDM group 0) as an example, the time-frequency Resource occupies 12 Resource Elements (REs), and the 12 REs carry 4 DMRS ports through a Time Domain (TD) orthogonal sequence with length of 2 and a Frequency Domain (FD) orthogonal sequence with length of 2.
To further improve the spectrum utilization efficiency and the number of users supported by 5G systems, the third generation partnership project (3GPP,3rd Generation Partnership Project) discusses the introduction of Non-orthogonal multiple access (NOMA, non-Orthogonal Multiple Access) technology in the 5G standard. The NOMA technology can allocate a block of resources to a plurality of users, and then combines the techniques of serial interference elimination of a receiving end and the like to realize correct demodulation.
Due to the increase of the number of uplink access users after the NOMA technology is introduced, the number of ports carried by the first configuration scheme corresponding to the Type-1DMRS in the current 5G standard is limited.
Disclosure of Invention
The embodiment of the invention provides a method, a device, a medium and equipment for configuring uplink demodulation reference signals, which are used for solving the problem that the number of ports carried by a first configuration scheme corresponding to a Type-1DMRS is limited.
The invention provides a method for configuring an uplink demodulation reference signal (DMRS), which comprises the following steps:
and receiving a Radio Resource Control (RRC) signaling sent by a network side, wherein the RRC signaling comprises DMRS configuration indication information, and the DMRS configuration indication information is used for indicating whether a terminal enables a second configuration scheme corresponding to an uplink demodulation reference signal configuration type 1.
The invention also provides a device for configuring the uplink demodulation reference signal (DMRS), which comprises:
a receiving module, configured to receive a radio resource control RRC signaling sent by a network side, where the RRC signaling includes DMRS configuration indication information, where the DMRS configuration indication information is used to indicate whether the terminal enables a second configuration scheme corresponding to an uplink demodulation reference signal configuration type 1.
The invention also provides a method for configuring the DMRS of the uplink demodulation reference signal, which comprises the following steps:
and sending Radio Resource Control (RRC) signaling to the terminal side, wherein the RRC signaling comprises DMRS configuration indication information, and the DMRS configuration indication information is used for indicating whether the terminal enables a second configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
The invention also provides a device for configuring the uplink demodulation reference signal (DMRS), which comprises:
the first sending module is configured to send radio resource control RRC signaling to the terminal side, where the RRC signaling includes DMRS configuration indication information, where the DMRS configuration indication information is configured to indicate whether the terminal enables a second configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
The present invention also provides a non-transitory computer storage medium storing an executable program that is executed by a processor to implement the steps of any of the methods described above.
The invention also provides a communication device, which comprises a memory, a processor, a transceiver and a bus interface; the processor is configured to read a program in the memory, and execute:
receiving Radio Resource Control (RRC) signaling sent by a network side through the transceiver, wherein the RRC signaling comprises DMRS configuration indication information, and the DMRS configuration indication information is used for indicating whether a terminal enables a second configuration scheme corresponding to an uplink demodulation reference signal configuration type 1; alternatively, execution:
and transmitting Radio Resource Control (RRC) signaling to the terminal side through the transceiver, wherein the RRC signaling comprises DMRS configuration indication information, and the DMRS configuration indication information is used for indicating whether the terminal enables a second configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
According to the scheme provided by the embodiment of the invention, the Radio Resource Control (RRC) signaling sent by the network side to the terminal side can comprise DMRS configuration indication information, wherein the DMRS configuration indication information is used for indicating whether the terminal enables a second configuration scheme corresponding to the uplink demodulation reference signal configuration type 1. The terminal performs DMRS configuration through the second configuration scheme, so that the problem that the port number borne by the first configuration scheme corresponding to the Type-1DMRS is limited can be solved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a DMRS configuration scheme provided in the prior art of the present invention;
fig. 2 is a flow chart of a DMRS configuration method according to a first embodiment of the present invention;
fig. 3 (a) and fig. 3 (b) are schematic diagrams of DMRS configuration schemes according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a DMRS configuration apparatus according to a second embodiment of the present invention;
fig. 5 is a flow chart of a DMRS configuration method according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of a DMRS configuration apparatus according to a fourth embodiment of the present invention;
fig. 7 is a flow chart of a DMRS configuration method provided in a fifth embodiment of the present invention;
fig. 8 is a schematic RRC signaling diagram according to a fifth embodiment of the present invention;
FIG. 9 is a schematic diagram of a parameter configuration provided in a fifth embodiment of the present invention;
fig. 10 is a schematic diagram of DMRS symbols and corresponding RE positions provided in a fifth embodiment of the present invention;
FIG. 11 is a schematic diagram of a parameter configuration provided in a fifth embodiment of the present invention;
fig. 12 is a schematic diagram of DMRS symbols and corresponding RE positions provided in a fifth embodiment of the present invention;
fig. 13 is a schematic structural diagram of a communication device according to a sixth embodiment of the present invention.
Detailed Description
Because the number of uplink access users is increased after NOMA technology is introduced, the number of ports carried by the first configuration scheme corresponding to the Type-1DMRS in the current 5G standard is limited, and therefore, the embodiment of the invention provides an enhanced DMRS configuration method corresponding to the Type-1DMRS, and the number of the ports carried by the DMRS is increased on the time-frequency resource of the existing first configuration scheme.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, as used herein, reference to "a plurality of" or "a plurality of" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein.
Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
An embodiment of the present invention provides a DMRS configuration method, where the method may be applied to a terminal side, and a step flow of the method may be as shown in fig. 2, and includes:
step 101, receiving RRC signaling.
In this step, a radio resource control RRC signaling sent by the network side may be received, where the RRC signaling includes DMRS configuration indication information, where the DMRS configuration indication information is used to indicate whether the terminal enables a second configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
It can be understood that, compared with the first configuration scheme corresponding to the uplink demodulation reference signal configuration type1, the second configuration scheme can increase the number of DMRS ports carried on the same time-frequency resource.
In the embodiments of the present invention, it may be understood that the second configuration scheme corresponds to an enhanced DMRS configuration scheme.
In one possible implementation, the DMRS ports mapped on REs included in the same CDM group in the second configuration scheme use different reference signal sequences.
Specifically, the second configuration scheme may, but is not limited to, increasing the number of DMRS ports that can be carried on the same time-frequency resource by introducing a pair of mutually orthogonal reference signal sequences in the same CDM group.
If the DMRS configuration indication information is used for indicating the terminal to enable the second configuration scheme corresponding to the uplink demodulation reference signal configuration Type1, the terminal performs DMRS configuration through the second configuration scheme, so that the problem that the number of ports carried by the first configuration scheme corresponding to the Type-1DMRS is limited can be solved.
Step 102, performing DMRS configuration.
Further, DMRS configuration may be performed according to the DMRS configuration indication information.
In this embodiment, if the DMRS configuration indication information indicates that the terminal enables the second configuration scheme corresponding to the uplink demodulation reference signal configuration type1, DMRS configuration may be performed according to the second configuration scheme.
That is, when the DMRS configuration indication information is used to indicate that the terminal enables the second configuration scheme corresponding to the uplink demodulation reference signal configuration type1, in this step, DMRS configuration may be performed according to the second configuration scheme for the determined DMRS port for transmitting PUSCH, and a DMRS symbol corresponding to the DMRS port is generated and mapped on the resource element RE corresponding to the DMRS port.
Taking the second configuration scheme as an example of increasing the number of DMRS ports that can be carried on the same time-frequency resource by introducing a pair of mutually orthogonal reference signal sequences in the same CDM group, in the enhanced DMRS configuration scheme, the RE allocation manner of the multiple CDM groups in the original first configuration scheme is maintained, and increasing the number of DMRS ports that can be carried on the same time-frequency resource by introducing a pair of mutually orthogonal reference signal sequences in the same CDM group. Fig. 3 is a schematic diagram of a DMRS configuration scheme according to a first embodiment of the present invention, taking CDM group 0 as an example, a pair of mutually orthogonal reference signal sequences (assumed to be CS 0 and CS1 respectively) are introduced, and when the reference signal sequences are CS 0 and CS1, 4 DMRS ports can be carried by the time-frequency domain orthogonal sequences with length of 2, so that the total number of DMRS ports that can be carried on the same time-frequency resource increases to 8. In fig. 3 (a), 4 DMRS ports carried by orthogonal sequences are illustrated for a reference signal sequence CS 0. In fig. 3 (b), for reference signal sequence CS1, 4 DMRS ports carried by orthogonal sequences are illustrated.
When the DMRS configuration indication information is used to indicate that the terminal does not enable the second configuration scheme corresponding to the uplink demodulation reference signal configuration type1, in this step, DMRS configuration may be performed according to the first configuration scheme for the determined DMRS port for transmitting PUSCH, and a DMRS symbol corresponding to the DMRS port is generated and mapped on an RE corresponding to the DMRS port.
That is, in this embodiment, if the DMRS configuration indication information indicates that the terminal does not enable the second configuration scheme corresponding to the uplink demodulation reference signal configuration type1, the DMRS configuration may be performed according to an existing DMRS configuration scheme (i.e., the first configuration scheme), but is not limited to this.
It should be noted that, after step 101, before step 102, step 101' may further include:
step 101', receive uplink grant information or configuration grant information.
In this step, uplink grant (UL grant) information or configuration grant (Configured grant) information transmitted from the network side may be received.
At this time, it may be understood that the DMRS port for transmitting PUSCH determined in step 102 is determined according to the relevant field in the UL grant information or Configured grant information.
Corresponding to the method provided in the first embodiment, the following apparatus is provided.
Example two
A second embodiment of the present invention provides a DMRS configuration apparatus, where the structure of the apparatus may be as shown in fig. 4, including:
the receiving module 11 is configured to receive a radio resource control RRC signaling sent by a network side, where the RRC signaling includes DMRS configuration indication information, where the DMRS configuration indication information is configured to indicate whether the terminal enables a second configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
The second configuration scheme may increase the number of DMRS ports carried on the same time-frequency resource, relative to the first configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
In one possible implementation, the DMRS ports mapped on resource elements RE contained in the same CDM group of code division multiplexing groups use different reference signal sequences.
The apparatus further comprises a configuration module 12:
the configuration module 12 is configured to perform DMRS configuration according to the second configuration scheme for the determined DMRS port for transmitting the PUSCH when the DMRS configuration indication information is used to indicate that the terminal enables the second configuration scheme corresponding to the uplink demodulation reference signal configuration type1, and generate a DMRS symbol corresponding to the DMRS port and map the DMRS symbol on a resource element RE corresponding to the DMRS port.
The configuration module 12 is further configured to perform DMRS configuration according to the first configuration scheme for the determined DMRS port for transmitting PUSCH when the DMRS configuration indication information is used to indicate that the terminal does not enable the second configuration scheme corresponding to the uplink demodulation reference signal configuration type1, and generate a DMRS symbol corresponding to the DMRS port and map the DMRS symbol on an RE corresponding to the DMRS port.
The receiving module 11 is further Configured to receive uplink grant information or Configured grant information sent by the network side. The configuration module 12 is further specifically Configured to determine a DMRS port for transmitting PUSCH according to the relevant field in the UL grant information or Configured grant information.
Corresponding to the method provided in the first embodiment, the following method is provided.
Example III
The third embodiment of the present invention provides a DMRS configuration method, where the method may be applied to a network side, and a step flow of the method may be as shown in fig. 5, and includes:
step 201, RRC signaling is sent.
In this step, an RRC signaling may be sent to the terminal side, where the RRC signaling includes DMRS configuration indication information, where the DMRS configuration indication information is used to indicate whether the terminal enables the second configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
The second configuration scheme may increase the number of DMRS ports carried on the same time-frequency resource, relative to the first configuration scheme corresponding to the configuration type1 of the uplink demodulation reference signal.
In one possible implementation, the DMRS ports mapped on resource elements RE contained in the same CDM group of code division multiplexing groups use different reference signal sequences.
Specifically, in the second configuration scheme, the number of DMRS ports that can be carried on the same time-frequency resource may be increased by introducing a pair of mutually orthogonal reference signal sequences in the same CDM group.
Step 202, sending uplink authorization information or configuration authorization information.
Further, after step 201, UL grant information or Configured grant information may be sent to the terminal side, to instruct the terminal side to determine the DMRS port for sending PUSCH according to the relevant field in the UL grant information or Configured grant information.
At this time, the terminal side may perform DMRS configuration for the DMRS port according to the determined DMRS port for transmitting PUSCH and the DMRS configuration indication information.
Corresponding to the method provided in the third embodiment, the following apparatus is provided.
Example IV
A fourth embodiment of the present invention provides a DMRS configuration apparatus, where the structure of the apparatus may be as shown in fig. 6, including:
the first sending module 21 is configured to send radio resource control RRC signaling to the terminal side, where the RRC signaling includes DMRS configuration indication information, where the DMRS configuration indication information is configured to indicate whether the terminal enables a second configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
The second configuration scheme may increase the number of DMRS ports carried on the same time-frequency resource, relative to the first configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
In one possible implementation, the DMRS ports mapped on resource elements RE contained in the same CDM group of code division multiplexing groups use different reference signal sequences.
The apparatus further comprises a second transmitting module 22:
the second sending module 22 is Configured to send, after the first sending module 21 sends the RRC signaling to the terminal side, uplink grant information or Configured grant information to the terminal side, and instruct the terminal side to determine the DMRS port for sending the PUSCH according to the relevant fields in the UL grant information or Configured grant information.
The following describes the schemes provided in the first and third embodiments of the present invention by way of a specific example.
Example five
The fifth embodiment of the present invention provides a DMRS configuration method, where the flow of steps of the method may be as shown in fig. 7, including:
step 301, receiving RRC signaling sent by the network side.
In this step, the terminal may receive an RRC signaling (for example, the RRC signaling may be denoted as DMRS-uplink configuration) sent by the network side, and DMRS configuration indication information in the RRC signaling may be assumed to be carried in a DMRS-Type field, and a schematic diagram of the RRC signaling may be shown in fig. 8. It is understood that a field in RRC signaling may be modified or added, and the DMRS configuration indication information is carried by using the field.
In this embodiment, it may be assumed that when the DMRS-Type field is Type1E, the DMRS-Type field is used to instruct the terminal to enable the second configuration scheme corresponding to the uplink demodulation reference signal configuration Type1, and at this time, the terminal needs to perform DMRS configuration according to the enhanced DMRS configuration scheme (second configuration scheme). When the DMRS-Type field is Type1 (or is null (i.e., the DMRS-Type field is not configured)), the DMRS-Type field is used to instruct the terminal not to enable the second configuration scheme corresponding to the uplink demodulation reference signal configuration Type 1.
Step 302, receiving UL grant information sent by a network side.
In this step, the terminal may receive UL grant information sent by the network side, and an antenna port (antenna port) field in the UL grant information may be used to indicate a DMRS port for sending PUSCH. In this embodiment, it may be assumed that the DMRS port for transmitting PUSCH is port3 (port 3).
Step 303, DMRS configuration is performed.
In this step, the terminal may perform DMRS configuration for port 3.
If the DMRS-Type field of the RRC signaling is Type1 (or null), the DMRS configuration may be performed using an existing DMRS configuration scheme.
The existing DMRS configuration formula may be as follows:
wherein, the liquid crystal display device comprises a liquid crystal display device,
w f (k') and w t (l ') represents orthogonal sequences in the frequency domain and the time domain, respectively, wherein k' =0, 1;
r (2n+k') represents the generated DMRS sequence;
n is an integer;
k＝4n+2k'+△。
for the existing DMRS configuration formula, a specific parameter configuration table may be, but is not limited to, as shown in fig. 9. According to the existing DMRS configuration formula and the parameter configuration table shown in fig. 9, the DMRS symbol corresponding to the generated port3 and the corresponding RE position schematic diagram may be shown in fig. 10.
If the DMRS-Type field of the RRC signaling is Type1E, an enhanced DMRS configuration scheme may be used for DMRS configuration.
The enhanced DMRS configuration formula may be as follows:
wherein, the liquid crystal display device comprises a liquid crystal display device,
w f (k') and w t (l') represents orthogonality in the frequency and time domains, respectivelyA sequence, wherein k' =0, 1;
r cs (2n+k') represents the generated DMRS sequence;
n is an integer;
k＝4n+2k'+△。
for enhanced DMRS configuration formulas, a specific parameter configuration table may be, but is not limited to, as shown in fig. 11. According to the enhanced DMRS configuration formula and the parameter configuration table shown in fig. 11, the DMRS symbol corresponding to the generated port3 and the corresponding RE position schematic diagram may be shown in fig. 12.
In the schemes provided by the embodiments of the present invention, whether the terminal enables DMRS configuration according to the second configuration scheme may be indicated by DMRS configuration indication information included in RRC signaling. Specifically, a field in RRC signaling may be modified or added, and the field is used to carry DMRS configuration indication information, to indicate whether the terminal adopts the second configuration scheme. When the DMRS configuration indication information indicates that the terminal does not adopt the second configuration scheme, the terminal can also adopt the original first configuration scheme to perform DMRS configuration.
In the second configuration scheme, DMRS ports mapped on resource elements REs included in the same CDM group may use different reference signal sequences. For example, the RE division manner of the original CDM group in the first configuration scheme may be maintained, and a pair of mutually orthogonal reference signal sequences are introduced into the same CDM group, so that more DMRS ports are carried through the same time-frequency resource, thereby solving the problem that the number of ports carried by the existing first configuration scheme is limited.
Based on the same inventive concept, embodiments of the present invention provide the following apparatuses and media.
Example six
A sixth embodiment of the present invention provides a communication device, where the device may include a memory 31, a processor 32, a transceiver 33, and a bus interface as shown in fig. 13; the processor 32 is configured to read the program in the memory 31, and execute:
receiving, by the transceiver 33, a radio resource control RRC signaling sent by a network side, where the RRC signaling includes DMRS configuration indication information, where the DMRS configuration indication information is used to indicate whether the terminal enables a second configuration scheme corresponding to the uplink demodulation reference signal configuration type 1; alternatively, execution:
and sending, by the transceiver 33, radio resource control RRC signaling to the terminal side, where the RRC signaling includes DMRS configuration indication information, where the DMRS configuration indication information is used to indicate whether the terminal enables a second configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
Alternatively, the processor 32 may include a Central Processing Unit (CPU), an application specific integrated circuit (ASIC, application specific integrated circuit), one or more integrated circuits for controlling program execution, a hardware circuit developed using a field programmable gate array (FPGA, field programmable gate array), and a baseband processor.
Optionally, the processor 32 may include at least one processing core.
Alternatively, the memory 31 may include a Read Only Memory (ROM), a random access memory (RAM, random access memory), and a disk memory. The memory 31 is used for storing data required by the at least one processor 32 when running. The number of memories 31 may be one or more.
A seventh embodiment of the present invention provides a non-volatile computer storage medium storing an executable program, which when executed by a processor, implements the method provided by the first or third embodiment of the present invention.
In a specific implementation, the computer storage medium may include: a universal serial bus flash disk (USB, universal Serial Bus flash drive), a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk or an optical disk, or the like, which can store program codes.
In the embodiments of the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, e.g., the division of the units or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, indirect coupling or communication connection of devices or units, electrical or otherwise.
The functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be an independent physical module.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. With such understanding, all or part of the technical solution of the embodiments of the present invention may be embodied in the form of a software product stored in a storage medium, including instructions for causing a computer device, which may be, for example, a personal computer, a server, or a network device, or a processor (processor), to perform all or part of the steps of the method described in the embodiments of the present invention. And the aforementioned storage medium includes: universal serial bus flash disk (universal serial bus flash drive), removable hard disk, ROM, RAM, magnetic or optical disk, or other various media capable of storing program code.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (11)
1. The method for configuring the uplink demodulation reference signal (DMRS) is characterized by comprising the following steps:
receiving Radio Resource Control (RRC) signaling sent by a network side, wherein the RRC signaling comprises DMRS configuration indication information, and the DMRS configuration indication information is used for indicating whether a terminal enables a second configuration scheme corresponding to an uplink demodulation reference signal configuration type 1; the second configuration scheme may increase the number of DMRS ports carried on the same time-frequency resource, relative to the first configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
2. The method of claim 1 wherein the second configuration scheme uses different reference signal sequences for DMRS ports mapped on resource elements RE contained in the same code division multiplexing group CDM group.
3. The method of claim 1, wherein when the DMRS configuration indication information is used to indicate that the terminal enables the second configuration scheme corresponding to the uplink demodulation reference signal configuration type1, the method further comprises:
and aiming at the determined DMRS port for transmitting the Physical Uplink Shared Channel (PUSCH), carrying out DMRS configuration according to a second configuration scheme, generating a DMRS symbol corresponding to the DMRS port and mapping the DMRS symbol on a Resource Element (RE) corresponding to the DMRS port.
4. The method of claim 1, wherein when the DMRS configuration indication information is used to indicate that the terminal does not enable the second configuration scheme corresponding to the uplink demodulation reference signal configuration type1, the method further comprises:
and aiming at the determined DMRS port for sending the PUSCH, carrying out DMRS configuration according to a first configuration scheme, generating a DMRS symbol corresponding to the DMRS port and mapping the DMRS symbol on an RE corresponding to the DMRS port.
5. The method of claim 3 or 4, wherein after receiving the radio resource control RRC signaling sent by the network side and before performing DMRS configuration, the method further comprises:
receiving uplink grant information or configuration grant information sent by a network;
determining a DMRS port for transmitting PUSCH includes:
and determining the DMRS port for sending the PUSCH according to the relevant field in the UL grant information or the Configured grant information.
6. An uplink demodulation reference signal DMRS configuration apparatus, wherein the apparatus includes:
a receiving module, configured to receive a radio resource control RRC signaling sent by a network side, where the RRC signaling includes DMRS configuration indication information, where the DMRS configuration indication information is configured to indicate whether a terminal enables a second configuration scheme corresponding to an uplink demodulation reference signal configuration type 1; the second configuration scheme may increase the number of DMRS ports carried on the same time-frequency resource, relative to the first configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
7. The method for configuring the uplink demodulation reference signal (DMRS) is characterized by comprising the following steps:
transmitting Radio Resource Control (RRC) signaling to a terminal side, wherein the RRC signaling comprises DMRS configuration indication information, and the DMRS configuration indication information is used for indicating whether the terminal enables a second configuration scheme corresponding to an uplink demodulation reference signal configuration type 1; the second configuration scheme may increase the number of DMRS ports carried on the same time-frequency resource, relative to the first configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
8. The method of claim 7, wherein after transmitting RRC signaling to the terminal side, the method further comprises:
and sending uplink grant information or configuration grant information to the terminal side, and indicating the terminal side to determine a DMRS port for sending the PUSCH according to the relevant fields in the uplink grant information or the configuration grant information.
9. An uplink demodulation reference signal DMRS configuration apparatus, wherein the apparatus includes:
a first sending module, configured to send radio resource control RRC signaling to a terminal side, where the RRC signaling includes DMRS configuration indication information, where the DMRS configuration indication information is configured to indicate whether the terminal enables a second configuration scheme corresponding to an uplink demodulation reference signal configuration type 1; the second configuration scheme may increase the number of DMRS ports carried on the same time-frequency resource, relative to the first configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
10. A non-transitory computer storage medium storing an executable program that is executed by a processor to implement the steps of any one of claims 1-5, 7-8.
11. A communication device comprising a memory, a processor, a transceiver, and a bus interface; the processor is configured to read a program in the memory, and execute:
receiving Radio Resource Control (RRC) signaling sent by a network side through the transceiver, wherein the RRC signaling comprises DMRS configuration indication information, and the DMRS configuration indication information is used for indicating whether a terminal enables a second configuration scheme corresponding to an uplink demodulation reference signal configuration type 1; the second configuration scheme may increase the number of DMRS ports carried on the same time-frequency resource, relative to the first configuration scheme corresponding to the uplink demodulation reference signal configuration type 1; alternatively, execution:
transmitting Radio Resource Control (RRC) signaling to a terminal side through the transceiver, wherein the RRC signaling comprises DMRS configuration indication information, and the DMRS configuration indication information is used for indicating whether the terminal enables a second configuration scheme corresponding to an uplink demodulation reference signal configuration type 1; the second configuration scheme may increase the number of DMRS ports carried on the same time-frequency resource, relative to the first configuration scheme corresponding to the uplink demodulation reference signal configuration type 1.
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