CN112703701B - Demodulation reference signal mapping, apparatus, device and storage medium thereof - Google Patents
Demodulation reference signal mapping, apparatus, device and storage medium thereof Download PDFInfo
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- 238000000034 method Methods 0.000 claims abstract description 50
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- 238000004590 computer program Methods 0.000 claims description 10
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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
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
Abstract
The invention provides a demodulation reference signal mapping device, demodulation reference signal mapping equipment and a storage medium thereof, wherein the method is applied to terminal equipment and comprises the following steps: determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition; the demodulation reference signal is mapped to a valid symbol adjacent to the split position in at least one actual transmission resource. Therefore, transmission resources are fully utilized, and technical support is provided for scenes such as retransmission information to improve coverage quality.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a demodulation reference signal mapping device, apparatus, device, and storage medium thereof.
Background
In the present day when mobile communication technology is rapidly developed, it is common to transfer information based on transmission resources such as channels.
In the related art, it is particularly important to achieve full utilization of transmission resources, for example, coverage is one of the key factors that operators consider when commercializing cellular networks, as it will directly affect quality of service as well as capital expenditure and operating costs.
To increase coverage, the protocol supports PUSCH (Physical uplink shared channel ) to obtain a larger received SNR (SIGNAL NOISE RATIO, signal to noise ratio) by repeating transmission, where R16 proposes a retransmission scheme of retransmission type b, applicable to scheduled PUSCH and unlicensed scheduled PUSCH. Therefore, if the transmission resources such as channels are fully utilized during retransmission, the coverage is positively increased.
Disclosure of Invention
An embodiment of a first aspect of the present invention provides a demodulation reference signal mapping method, where the method is applied to a terminal device, and the method includes: determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition; the demodulation reference signal is mapped to a valid symbol adjacent to the split position in at least one actual transmission resource.
Optionally, the splitting position includes: time slots; and/or, invalidating the symbol.
Optionally, the mapping the demodulation reference signal onto the valid symbol adjacent to the splitting position in at least one actual transmission resource includes: and mapping the demodulation reference signal to the last effective symbol in the actual transmission resource before the time slot boundary, wherein the actual transmission resource before the time slot boundary comprises a plurality of effective symbols.
Optionally, the mapping the demodulation reference signal onto the valid symbol adjacent to the splitting position in at least one actual transmission resource includes: and mapping the demodulation reference signal to an effective symbol in an actual transmission resource before a time slot boundary, wherein the actual transmission resource before the time slot boundary comprises an effective symbol.
Optionally, the mapping the demodulation reference signal onto the valid symbol adjacent to the splitting position in at least one actual transmission resource includes: and mapping the demodulation reference signal to a first effective symbol in a next actual transmission resource of a time slot boundary, wherein the next actual transmission resource of the time slot boundary comprises a plurality of effective symbols.
Optionally, the mapping the demodulation reference signal onto the valid symbol adjacent to the splitting position in at least one actual transmission resource includes: and mapping the demodulation reference signal to an effective symbol in an actual transmission resource behind a time slot boundary, wherein the actual transmission resource behind the time slot boundary comprises an effective symbol.
Optionally, the mapping the demodulation reference signal onto the valid symbol adjacent to the splitting position in at least one actual transmission resource includes: and mapping the demodulation reference signal to the last effective symbol in the actual transmission resource before the ineffective symbol, wherein the actual transmission resource before the ineffective symbol comprises a plurality of effective symbols.
Optionally, the mapping the demodulation reference signal onto the valid symbol adjacent to the splitting position in at least one actual transmission resource includes: and mapping the demodulation reference signal to an effective symbol in an actual transmission resource before an ineffective symbol, wherein the actual transmission resource before the ineffective symbol comprises an effective symbol.
Optionally, the mapping the demodulation reference signal onto the valid symbol adjacent to the splitting position in at least one actual transmission resource includes: and mapping the demodulation reference signal to a first effective symbol in an actual transmission resource behind an ineffective symbol, wherein the actual transmission resource behind the ineffective symbol comprises a plurality of effective symbols.
Optionally, the mapping the demodulation reference signal onto the valid symbol adjacent to the splitting position in at least one actual transmission resource includes: and mapping the demodulation reference signal to an effective symbol in an actual transmission resource behind an ineffective symbol, wherein the actual transmission resource behind the ineffective symbol contains an effective symbol.
An embodiment of a second aspect of the present invention provides a demodulation reference signal mapping apparatus, where the apparatus is applied to a terminal device, including: the splitting module is used for determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition; and the mapping module is used for mapping the demodulation reference signals to the effective symbols adjacent to the splitting position in at least one actual transmission resource.
An embodiment of a third aspect of the present invention proposes a communication device, comprising a processor, a transceiver, a memory and a computer program stored on the memory, the processor running the computer program to implement a demodulation reference signal mapping method as proposed in the embodiment of the first aspect.
An embodiment of a fourth aspect of the present invention proposes a processor-readable storage medium storing a computer program for causing the processor to execute the demodulation reference signal mapping method proposed by the embodiment of the first aspect.
The embodiment provided by the invention has at least the following technical effects:
and determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition, and mapping the demodulation reference signals to effective symbols adjacent to the splitting position in at least one actual transmission resource. Therefore, the utilization rate of transmission resources is improved, technical support is provided for scenes such as retransmission information to improve coverage quality, and resource consumption in demodulation reference signal mapping is reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic diagram of an information transmission scenario of a transmission resource according to an embodiment of the present invention;
fig. 2 is a flowchart of a demodulation reference signal mapping method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a mapping scenario of demodulation reference signals according to a first embodiment of the present invention;
fig. 4 is a schematic diagram of a demodulation reference signal mapping scenario according to a second embodiment of the present invention;
fig. 5 is a schematic diagram of a demodulation reference signal mapping scenario according to a third embodiment of the present invention;
fig. 6 is a schematic diagram of a demodulation reference signal mapping scenario according to a fourth embodiment of the present invention;
fig. 7 is a schematic diagram of a demodulation reference signal mapping scenario according to a fifth embodiment of the present invention;
fig. 8 is a schematic diagram of a demodulation reference signal mapping scenario according to a sixth embodiment of the present invention;
fig. 9 is a schematic diagram of a demodulation reference signal mapping scenario according to a seventh embodiment of the present invention;
fig. 10 is a schematic diagram of a demodulation reference signal mapping scenario according to an eighth embodiment of the present invention;
fig. 11 is a schematic diagram of a demodulation reference signal mapping scenario according to a ninth embodiment of the present invention;
Fig. 12 is a schematic diagram of a demodulation reference signal mapping scenario according to a tenth embodiment of the present invention;
fig. 13 is a schematic diagram of a demodulation reference signal mapping scenario according to an eleventh embodiment of the present invention;
fig. 14 is a schematic diagram of a demodulation reference signal mapping scenario according to a twelfth embodiment of the present invention;
fig. 15 is a schematic structural diagram of a demodulation reference signal mapping device according to the present invention; and
fig. 16 is a block diagram of a communication device according to one embodiment of the invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In order to fully utilize transmission resources, the invention provides a demodulation reference signal mapping method so as to fully utilize the transmission resources such as channels and the like.
The demodulation reference signal mapping method can be applied to any scene with transmission resources, and a retransmission scene is taken as an example continuously, so that in order to increase coverage, a protocol support PUSCH obtains a larger receiving SNR through repeated transmission, wherein R16 provides a retransmission mode of retransmission type B, and the method is suitable for a scheduled PUSCH and an unlicensed scheduled PUSCH.
Specifically, the base station transmits an uplink grant or an unlicensed indication of one or more nominal PUSCH retransmissions. The terminal transmits one or more actual PUSCH replicas in one slot, or two or more actual PUSCH replicas in a consecutive plurality of available slots. After determining that the TypeB-based PUSCH repeats the invalid symbols within each nominal PUSCH time domain resource, the remaining symbols may be considered as potentially valid symbols. If the number of consecutive potential effective symbols of a nominal PUSCH in a time slot is greater than 0, the number of consecutive potential effective symbols may be mapped into an actual PUSCH replica, and the time domain resources of the nominal PUSCH replica may include the time domain resources of one or more actual PUSCH replicas. The terminal device does not send an actual PUSCH copy for a single symbol unless the single symbol is the nominal PUSCH duration L indicated by the base station.
That is, as shown in fig. 1, when an actual PUSCH copy includes only one time domain resource (one time domain resource is shown in one cell in the figure, and the time domain resource can also be understood as a symbol unit in a retransmission scenario), the time domain resource corresponding to the actual PUSCH copy is not wasted because of sending the actual PUSCH copy, and obviously, if the time domain resource of this portion can be utilized, positive effects on retransmission are necessarily brought, for example, retransmission efficiency is improved.
The demodulation reference signal mapping method according to the embodiment of the present invention is described in detail below with reference to specific embodiments, where the method is applied to a terminal device, and the terminal device includes, but is not limited to, a mobile phone, a wearable terminal device, and other communication devices.
Fig. 2 is a flowchart of a demodulation reference signal mapping method according to an embodiment of the present invention, where the method includes:
in step 201, a plurality of actual transmission resources corresponding to the logical transmission resources satisfying the split condition are determined.
The logical transmission resource may be understood as a theoretically transmittable transmission resource defined according to a protocol, for example, the nominal PUSCH time domain resource in the retransmission scenario may be one possible example of the logical transmission resource, and the actual transmission resource may be understood as a transmission resource available for transmission according to the actual transmission environment, for example, the actual PUSCH time domain resource in the retransmission scenario may be one possible example of the actual transmission resource.
In the executing process, when the logic transmission resource meets the splitting condition, the logic transmission resource is split, so in the embodiment, a plurality of actual transmission resources corresponding to the logic transmission resource meeting the splitting condition are determined, so that information is transmitted based on the actual transmission resources.
In addition, in different application scenarios, the above-mentioned splitting conditions are different, and the manner of determining a plurality of actual transmission resources corresponding to the logical transmission resources satisfying the splitting conditions is different, which is exemplified as follows:
example one:
in this example, the transmission resources of the logical transmission resources crossing the slot boundary on both sides of the slot boundary are determined as one actual transmission resource, respectively. In this embodiment, the logical transmission resource is divided into a plurality of time slots in the time domain, and each time slot includes a fixed number of symbols, so that each time slot defines a time slot boundary with other time slots through the fixed number of symbols, if there is a cross-time slot of the logical transmission resource, the transmission resource of the logical transmission resource on one side of the time slot boundary is directly determined as an actual transmission resource, and the transmission resource of the logical transmission resource on the other side of the time slot boundary is determined as another actual transmission resource.
For example, as shown in fig. 3, the number of symbols included in each slot is preset to be fixed, for example, as shown in fig. 3, when the transmission resources include S slots and U slots, each slot includes 14 symbols, so that there will be a slot boundary between slots, and the divided logical transmission resources nominal#1 cross slots, 1 symbol in the S slot, 2 symbols in the U slot, so, with continued reference to fig. 3, the logical transmission resource crossing the slot boundary may be determined as two Actual transmission resources at the slot boundary, that is, the 14 th symbol (i.e., symbol 13) of the S slot is determined as one Actual transmission resource actual#1, and the 1 st and 2 nd (i.e., symbols 0 and 1) of the U slot are determined as one Actual transmission resource actual#2.
Example two:
in this example, the logical transmission resources located at both sides of the invalid symbol and belonging to the same slot are split into two actual transmission resources, if the logical transmission resources include the invalid symbol, the transmission resource located at one side of the invalid symbol is directly determined as one actual transmission resource, and the transmission resource located at the other side of the invalid symbol is determined as another actual transmission resource.
The logical transmission resource in this embodiment is divided into a plurality of time slots in the time domain, each time slot includes a fixed number of symbols, where the symbols may be understood as the minimum constituent unit of the time slot, in some possible examples, the symbols may be orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols, each symbol may be valid or invalid due to its transmission performance, in practical application, a symbol that may carry data sent by the current user is defined as a valid symbol, a symbol that may not carry data sent by the current user is defined as an invalid symbol, and since the invalid transmission symbol cannot carry data currently sent by the user, in this embodiment, transmission resources belonging to the same logical transmission resource on both sides of the invalid symbol are determined as two actual transmission resources by taking the invalid symbol as a boundary.
For example, as shown in fig. 4, a plurality of logic transmission resources, namely, nominal# in the figure is preset, and if the symbol 3 in the nominal#2 is an invalid transmission symbol, as shown in fig. 4, the symbol 2 in the nominal#2 is set as an Actual transmission resource actual#3, and the symbol 4 is determined as an Actual transmission resource actual#4.
Example three:
in this example, transmission resources of which both sides of the slot boundary belong to the same logical transmission resource are determined as two actual transmission resources. The logic transmission resource in this embodiment is divided into a plurality of time slots in the time domain, and each time slot includes a fixed number of symbols, so that each time slot defines a time slot boundary with other time slots through the fixed number of symbols. Also, logical transmission resources crossing a slot boundary may be determined as two actual transmission resources at the slot boundary. In this embodiment, the logical transmission resource is divided into a plurality of time slots in the time domain, each time slot includes a fixed number of symbols, each symbol may be valid or invalid due to its transmission performance, and since the invalid transmission symbol cannot carry the data currently transmitted by the user, in this embodiment, the same logical transmission resource located on both sides of the invalid symbol is split into two actual transmission resources by taking the invalid symbol as a boundary.
For example, as shown in fig. 5, the number of symbols included in each slot is preset to be fixed, for example, as shown in fig. 5, when the transmission resources include S slots and U slots, each slot includes 14 symbols, so that there is a slot boundary between slots, and the divided logical transmission resources nominal#1 cross slots, 1 symbol is in the S slot, and 2 symbols are in the U slot, so, with continued reference to fig. 5, transmission resources that belong to the same logical transmission resource on both sides of the slot boundary may be determined as two Actual transmission resources at the slot boundary, that is, the 14 th symbol of the S slot is determined as one Actual transmission resource actual#1, and the 1 st and 2 nd symbols (i.e., symbols 0 and 1) of the U slot are determined as one Actual transmission resource actual#2. In fig. 5, a plurality of logic transmission resources, namely, nominal# in the figure is preset, wherein if symbol 3 in nominal#2 is an invalid transmission resource, as shown in fig. 5, symbol 2 in nominal#2 is set as an Actual transmission resource actual#3, and symbol 4 is determined as an Actual transmission resource actual#4.
Step 202, mapping the demodulation reference signal onto a valid symbol adjacent to the splitting position in at least one actual transmission resource.
The DeModulation Reference Signal may be understood as pilot information for guiding information in a transmission resource to be demodulated, for example, a possible example of the DeModulation Reference Signal is a DMRS (DeModulation Reference Signal) in a retransmission scenario, and for convenience of description, all embodiments of the present invention are illustrated with the DMRS as the DeModulation Reference Signal.
In this embodiment, the demodulation reference signal is mapped to at least one actual transmission resource, and the effective symbol adjacent to the splitting position, for example, taking the scenario shown in fig. 5 as an example, as shown in fig. 6, the DMRS is mapped to the 14 th symbol of the S slot, that is, the symbol 13.
Therefore, by mapping the demodulation reference signals on the effective symbols adjacent to the splitting position, on one hand, the method can ensure that even if the actual transmission resources only comprise one effective symbol, the effective symbols can be mapped, and avoid the waste of the transmission resources; on the other hand, as the mapping is carried out on the effective signals adjacent to the splitting position, one mapping can be ensured to be at least used by two adjacent actual transmission resources, and the consumption of the resources is further reduced.
In summary, the demodulation reference signal mapping method in the embodiment of the present invention determines a plurality of actual transmission resources corresponding to the logical transmission resources satisfying the splitting condition, and further maps the demodulation reference signal to an effective symbol adjacent to the splitting position in at least one actual transmission resource. Therefore, the utilization rate of transmission resources is improved, technical support is provided for scenes such as retransmission information to improve coverage quality, and resource consumption in demodulation reference signal mapping is reduced.
In the actual implementation process, the split position may include a slot boundary, or may include an invalid symbol, or may include a slot boundary and an invalid symbol, so in this embodiment, the actual transmission resources have diversity, and therefore, the manner in which the demodulation reference signal is mapped to the valid symbol adjacent to the split position in at least one actual transmission resource also necessarily has diversity, which is illustrated in the following example:
when the split position includes a slot boundary, mapping the demodulation reference signal onto the effective symbol adjacent to the split position in at least one actual transmission resource at least comprises one or more of the following:
example one:
in this example, the demodulation reference signal is mapped to the last valid symbol in the actual transmission resource prior to the slot boundary, where the actual transmission resource prior to the slot boundary contains a plurality of valid symbols.
That is, as shown in fig. 6, the DMRS is mapped to the 14 th symbol of the S slot, so that the mapped DMRS may be used as a demodulation reference signal of the Actual #1, a demodulation reference signal of the Actual #2, or even a demodulation reference signal of a subsequent Actual transmission resource such as the Actual #3, and the demodulation efficiency of the subsequent Actual transmission resource may be improved because the demodulation reference signal is located before the slots of other Actual transmission resources.
Example two:
in this embodiment, the demodulation reference signal is mapped to an effective symbol in an actual transmission resource before a slot boundary, where the actual transmission resource before the slot boundary includes an effective symbol, that is, in the embodiment of the present invention, a transmission resource including only one effective symbol is fully utilized.
Taking the scenario shown in fig. 7 as an example, if the symbol 13 in the nominal#1 is an effective transmission symbol, the symbol 13 in the nominal#1 is determined to be an Actual transmission resource actual#1, and the symbols 0 and 1 are determined to be an Actual transmission resource actual#2, as shown in fig. 7, the DMRS is mapped to the 14 th symbol of the S slot, that is, the symbol corresponding to the actual#1, so that the mapped DMRS may be used as a demodulation reference signal of the actual#1 or a demodulation reference signal of the actual#2, or may even be used as a demodulation reference signal of a subsequent Actual transmission resource such as the actual#3, and since the demodulation reference signal is earlier than the slots of other Actual transmission resources, the demodulation efficiency of the subsequent Actual transmission resource may be improved.
Example three:
in this example, the demodulation reference signal is mapped to a first effective symbol in a slot boundary-later actual transmission resource, where the slot boundary-later actual transmission resource contains a plurality of effective symbols. That is, in this embodiment, if the actual transmission resource after the slot boundary includes a plurality of valid symbols, the first symbol of the actual transmission resource after the disaster is used as the mapping object of the demodulation reference signal.
For example, as shown in fig. 8, the divided logical transmission resource nominal#1 spans a slot, 1 symbol is in an S slot, and 2 symbols are in a U slot, so, with continued reference to fig. 8, i.e., the 14 th symbol of the S slot is determined as an Actual transmission resource actual#1, the 1 st and 2 nd symbols (i.e., symbols 0 and 1) of the U slot are determined as an Actual transmission resource actual#2, and then the demodulation reference signal may be mapped to the first symbol in the actual#2, i.e., symbol 0 of the U slot. Thus, the mapped DMRS may be used as a demodulation reference signal of the actual#1, a demodulation reference signal of the actual#2, or even as a demodulation reference signal of a subsequent Actual transmission resource such as the actual#3, and the demodulation reference signal actual#2 is located in the first symbol of the demodulation reference signal, so that the information transmission efficiency in the actual#2 is improved, and the demodulation efficiency of the subsequent Actual transmission resource may be improved relative to the time slot of other subsequent Actual transmission resources, and the demodulation reference signal may be relatively close to the actual#1, and may also be used for information transmission of the actual#1.
Example four:
in this example, the demodulation reference signal is mapped to an effective symbol in an actual transmission resource following a slot boundary, wherein the actual transmission resource following the slot boundary contains an effective symbol.
For example, as shown in fig. 9, in this example, a plurality of logic transmission resources, namely nomial# in the figure is preset, where if symbols 12 and 13 in nomial#1 are located in the same slot and symbol 0 is located in one slot, symbols 12 and 13 are determined to be an Actual transmission resource actual#1, and symbol 0 is determined to be an Actual transmission resource actual#2, where a demodulation reference signal may be mapped to symbol 0 in actual#2. Thus, the mapped DMRS may be used as a demodulation reference signal of the actual#1, a demodulation reference signal of the actual#2, or even as a demodulation reference signal of a subsequent Actual transmission resource such as the actual#3, and the demodulation reference signal actual#2 is located in the first symbol of the demodulation reference signal, so that the information transmission efficiency in the actual#2 is improved, and the demodulation efficiency of the subsequent Actual transmission resource may be improved relative to the time slot of other subsequent Actual transmission resources, and the demodulation reference signal may be relatively close to the actual#1, and may also be used for information transmission of the actual#1.
When the split position includes an invalid symbol, mapping the demodulation reference signal onto an valid symbol adjacent to the split position in at least one actual transmission resource, at least one or more of the following:
Example one:
in this example, the demodulation reference signal is mapped to the last valid symbol in the actual transmission resource preceding the invalid symbol, wherein the actual transmission resource preceding the invalid symbol contains a plurality of valid symbols.
For example, as shown in fig. 10, a plurality of logic transmission resources, namely, nominal# in the figure is preset, where if symbol 2 in nominal#2 is an invalid transmission symbol, as shown in fig. 10, symbols 0 and 1 in nominal#1 are Actual transmission resources actual#2, and symbols 3 and 4 are Actual transmission resources actual#3, DMRS may be mapped to the last valid symbol in actual#2, namely, symbol 1. Therefore, the mapped DMRS can be used as a demodulation reference signal of the Actual #2, a demodulation reference signal of the Actual #3, and even a demodulation reference signal of a subsequent Actual transmission resource such as the Actual #4, and the demodulation efficiency of the subsequent Actual transmission resource can be improved because the demodulation reference signal is positioned before the time slot of other Actual transmission resources.
Example two:
in this example, the demodulation reference signal is mapped to an active symbol in an actual transmission resource preceding an inactive symbol, wherein the active symbol preceding the active symbol contains one active symbol.
For example, as shown in fig. 11, a plurality of logic transmission resources, namely, nomial # in the figure is preset, where if symbol 3 in nomial #2 is an invalid transmission symbol, as shown in fig. 10, symbol 2 in nomal #2 is an Actual transmission resource Actual #3, and symbol 4 is an Actual transmission resource Actual #4, DMRS may be mapped to an effective symbol in Actual #3, namely, symbol 2. Therefore, the mapped DMRS can be used as a demodulation reference signal of the Actual #3, a demodulation reference signal of the Actual #4, and even a demodulation reference signal of a subsequent Actual transmission resource such as the Actual #5, and the demodulation efficiency of the subsequent Actual transmission resource can be improved because the demodulation reference signal is positioned before the time slot of other Actual transmission resources.
Example three:
in this example, the demodulation reference signal is mapped to a first valid symbol in an actual transmission resource following an invalid symbol, wherein the actual transmission resource following the invalid symbol contains a plurality of valid symbols.
For example, as shown in fig. 12, a plurality of logic transmission resources, namely, nomial # in the figure is preset, where if symbol 2 in nomial #2 is an invalid transmission symbol, as shown in fig. 12, symbols 3 and 4 in nomal #2 are one Actual transmission resource, namely, actual #3, and the DMRS may be mapped onto the first valid symbol in Actual #3, namely, symbol 3. Therefore, the mapped DMRS can be used as a demodulation reference signal of the Actual #3, a demodulation reference signal of the Actual #2, and even a demodulation reference signal of a subsequent Actual transmission resource such as the Actual #4, and the demodulation efficiency of the subsequent Actual transmission resource can be improved because the demodulation reference signal is positioned before the time slot of other Actual transmission resources.
Example four:
in this example, the demodulation reference signal is mapped to an active symbol in an actual transmission resource following an inactive symbol, wherein the active symbol comprises an active symbol.
For example, as shown in fig. 13, a plurality of logic transmission resources, namely, nomial # in the figure is preset, where if symbol 3 in nomial #2 is an invalid transmission symbol, as shown in fig. 13, symbol 2 in nomal #2 is an Actual transmission resource Actual #3, and symbol 4 is an Actual transmission resource Actual #4, DMRS may be mapped to an effective symbol in Actual #4, namely, symbol 4. Therefore, the mapped DMRS can be used as a demodulation reference signal of the Actual #3, a demodulation reference signal of the Actual #4, and even a demodulation reference signal of a subsequent Actual transmission resource such as the Actual #5, and the demodulation efficiency of the subsequent Actual transmission resource can be improved because the demodulation reference signal is positioned before the time slot of other Actual transmission resources.
The manner in which the demodulation reference signal is mapped to the active symbol adjacent to the splitting position in the at least one actual transmission resource when the splitting position includes both the inactive symbol and the slot boundary may refer to a combination of the foregoing embodiments, as a possible implementation manner, the demodulation reference signal is mapped to the last active symbol in the actual transmission resource before the slot boundary, where the actual transmission resource before the slot boundary includes a plurality of active symbols, and the demodulation reference signal is mapped to the last active symbol in the actual transmission resource before the inactive symbol, where the actual transmission resource before the inactive symbol includes a plurality of active symbols.
For example, as shown in fig. 14, the DMRS is mapped to the 14 th symbol of the S slot, so that the mapped DMRS may be used as a demodulation reference signal of the Actual #1, a demodulation reference signal of the Actual #2, or even a demodulation reference signal of a subsequent Actual transmission resource such as the Actual #3, and the demodulation efficiency of the subsequent Actual transmission resource may be improved because the demodulation reference signal is located before the slots of other Actual transmission resources. A plurality of logic transmission resources, namely, a Nominal # in the figure is preset, wherein if the symbol 4 in the Nominal #2 is an invalid transmission symbol, as shown in fig. 14, the symbols 2 and 3 in the Nominal #2 are Actual transmission resources, namely, actual #3, and the DMRS may be mapped to the last valid symbol in Actual #3, namely, symbol 3. Therefore, the mapped DMRS can be used as a demodulation reference signal of the Actual #3, a demodulation reference signal of the Actual #4, and even a demodulation reference signal of a subsequent Actual transmission resource such as the Actual #5, and the demodulation efficiency of the subsequent Actual transmission resource can be improved because the demodulation reference signal is positioned before the time slot of other Actual transmission resources. Therefore, not only can the DMRS be mapped for each DMRS not only by the actual transmission resource, but also the DMRS is not mapped only by the position of the time slot boundary or the invalid symbol of the actual transmission resource, and the DMRS is determined by combining the positions of the time slot boundary and the invalid symbol, so that the effective utilization of the transmission resource and the consumption of the transmission resource are balanced.
In summary, the demodulation reference signal mapping method of the embodiment of the invention flexibly maps the demodulation reference signal according to the actual transmission resource conditions before and after the splitting position, and balances the effective utilization of the transmission resource and the consumption of the transmission resource.
The present invention also provides a demodulation reference signal mapping apparatus corresponding to the demodulation reference signal mapping methods provided in the foregoing embodiments, and since the demodulation reference signal mapping apparatus provided in the foregoing embodiments corresponds to the methods provided in the foregoing embodiments, implementation of the demodulation reference signal mapping method is also applicable to the demodulation reference signal mapping apparatus provided in the present embodiment, which will not be described in detail in the present embodiment.
Fig. 15 is a schematic structural diagram of a demodulation reference signal mapping device according to the present invention.
Fig. 15 is a schematic structural diagram of a demodulation reference signal mapping apparatus according to an embodiment of the present invention, which is applied to a first terminal, as shown in fig. 15, and includes: a splitting module 1501, a mapping module 1502, wherein,
a splitting module 1501 for determining a plurality of actual transmission resources corresponding to the logical transmission resources satisfying the splitting condition;
A mapping module 1502 is configured to map the demodulation reference signal onto a valid symbol adjacent to the splitting position in at least one actual transmission resource.
In summary, the demodulation reference signal mapping device in the embodiment of the invention determines a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition, and further maps the demodulation reference signal to an effective symbol adjacent to the splitting position in at least one actual transmission resource. Therefore, the utilization rate of transmission resources is improved, technical support is provided for scenes such as retransmission information to improve coverage quality, and resource consumption in demodulation reference signal mapping is reduced.
According to an embodiment of the present invention, the present invention also provides a communication device and a readable storage medium.
As shown in fig. 16, is a block diagram of a communication device for demodulation reference signal mapping according to an embodiment of the present invention. Communication devices are intended to represent various forms of digital computers, such as laptops, desktops, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The communication device may also represent various forms of mobile apparatuses such as personal digital processing, cellular telephones, smartphones, wearable devices, and other similar computing apparatuses. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 16, the communication device includes: one or more processors 1401, memory 1402, and interfaces for connecting the components, including a high-speed interface and a low-speed interface. The various components are interconnected using different buses and may be mounted on a common motherboard or in other manners as desired. The processor may process instructions executing within the communication device, including instructions stored in or on memory to display graphical information of the GUI on an external input/output device, such as a display device coupled to the interface. In other embodiments, multiple processors and/or multiple buses may be used, if desired, along with multiple memories and multiple memories. Also, multiple communication devices may be connected, each providing a portion of the necessary operations (e.g., as a server array, a set of blade servers, or a multiprocessor system). One processor 1601 is shown in fig. 16 as an example.
Memory 1602 is a non-transitory computer-readable storage medium provided by the present invention. The memory stores instructions executable by the at least one processor to cause the at least one processor to perform the demodulation reference signal mapping method provided by the present invention. The non-transitory computer readable storage medium of the present invention stores computer instructions for causing a computer to execute the demodulation reference signal mapping method provided by the present invention.
The memory 1602 is a non-transitory computer readable storage medium that can be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as program instructions/modules corresponding to the demodulation reference signal mapping method in the embodiments of the present invention. The processor 1601 executes various functional applications of the server and data processing, i.e., implements the demodulation reference signal mapping method in the above-described method embodiment, by running non-transitory software programs, instructions, and modules stored in the memory 1602.
Memory 1602 may include a storage program area that may store an operating system, at least one application program required for functionality, and a storage data area; the storage data area may store data created from the use of the positioning communication device, etc. In addition, memory 1602 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid-state storage device. Optionally, the memory 1602 may include memory that is remotely located relative to the processor 1601, and that may be connected to the positioning communication device by a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The communication device performing demodulation reference signal mapping may further include: an input device 1603 and an output device 1604. The processor 1601, memory 1602, input device 1603, and output device 1604 may be connected by a bus or otherwise, for example in fig. 16.
The input device 1603 may receive input numeric or character information and generate key signal inputs related to locating user settings of the communication device and function controls, such as a touch screen, keypad, mouse, trackpad, touchpad, pointer stick, one or more mouse buttons, trackball, joystick, and like input devices. The output devices 1604 may include a display device, auxiliary lighting devices (e.g., LEDs), and haptic feedback devices (e.g., vibration motors), among others. The display device may include, but is not limited to, a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display, and a plasma display. In some implementations, the display device may be a touch screen.
Various implementations of the systems and techniques described here can be realized in digital electronic circuitry, integrated circuitry, application specific ASIC (application specific integrated circuit), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
These computing programs (also referred to as programs, software applications, or code) include machine instructions for a programmable processor, and may be implemented in a high-level procedural and/or object-oriented programming language, and/or in assembly/machine language. As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and/or device (e.g., magnetic discs, optical disks, memory, programmable Logic Devices (PLDs)) used to provide machine instructions and/or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal used to provide machine instructions and/or data to a programmable processor.
To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and pointing device (e.g., a mouse or trackball) by which a user can provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), and the internet.
The computer system may include a client and a server. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.
The server for executing the demodulation reference signal mapping method in the embodiment of the invention determines a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition, and further maps the demodulation reference signal to the effective symbol adjacent to the splitting position in at least one actual transmission resource. Therefore, the utilization rate of transmission resources is improved, technical support is provided for scenes such as retransmission information to improve coverage quality, and resource consumption in demodulation reference signal mapping is reduced.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present application may be performed in parallel, sequentially, or in a different order, provided that the desired results of the disclosed embodiments are achieved, and are not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (17)
1. A demodulation reference signal mapping method, wherein the method is applied to a terminal device, and comprises:
determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition;
mapping the demodulation reference signal onto the effective symbol adjacent to the splitting position in at least one actual transmission resource comprises:
and mapping the demodulation reference signal to the last effective symbol in the actual transmission resource before the time slot boundary, wherein the actual transmission resource before the time slot boundary comprises a plurality of effective symbols, and the demodulation reference signal can be used by at least two actual transmission resources adjacent to the splitting position.
2. The method of claim 1, wherein the splitting location comprises:
a slot boundary; and/or the number of the groups of groups,
invalid symbols.
3. A demodulation reference signal mapping method, wherein the method is applied to a terminal device, and comprises:
determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition;
mapping the demodulation reference signal onto the effective symbol adjacent to the splitting position in at least one actual transmission resource comprises:
and mapping the demodulation reference signal to an effective symbol in an actual transmission resource before a time slot boundary, wherein the actual transmission resource before the time slot boundary comprises an effective symbol, and the demodulation reference signal can be used by at least two actual transmission resources adjacent to the splitting position.
4. A demodulation reference signal mapping method, wherein the method is applied to a terminal device, and comprises:
determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition;
mapping the demodulation reference signal onto the effective symbol adjacent to the splitting position in at least one actual transmission resource comprises:
and mapping the demodulation reference signal to an effective symbol in an actual transmission resource behind a time slot boundary, wherein the actual transmission resource behind the time slot boundary comprises an effective symbol, and the demodulation reference signal can be used by at least two actual transmission resources adjacent to the splitting position.
5. A demodulation reference signal mapping method, wherein the method is applied to a terminal device, and comprises:
determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition;
mapping the demodulation reference signal onto the effective symbol adjacent to the splitting position in at least one actual transmission resource comprises:
and mapping the demodulation reference signal to the last effective symbol in the actual transmission resources before the ineffective symbol, wherein the actual transmission resources before the ineffective symbol comprise a plurality of effective symbols, and the demodulation reference signal can be used by at least two actual transmission resources adjacent to the splitting position.
6. A demodulation reference signal mapping method, wherein the method is applied to a terminal device, and comprises:
determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition;
mapping the demodulation reference signal onto the effective symbol adjacent to the splitting position in at least one actual transmission resource comprises:
and mapping the demodulation reference signal to an effective symbol in an effective symbol previous actual transmission resource of an ineffective symbol, wherein the effective symbol previous actual transmission resource comprises an effective symbol, and the demodulation reference signal can be used by at least two actual transmission resources adjacent to the splitting position.
7. A demodulation reference signal mapping method, wherein the method is applied to a terminal device, and comprises:
determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition;
mapping the demodulation reference signal onto the effective symbol adjacent to the splitting position in at least one actual transmission resource comprises:
and mapping the demodulation reference signal to a first effective symbol in an actual transmission resource behind an ineffective symbol, wherein the actual transmission resource behind the ineffective symbol comprises a plurality of effective symbols, and the demodulation reference signal can be used by at least two actual transmission resources adjacent to the splitting position.
8. A demodulation reference signal mapping method, wherein the method is applied to a terminal device, and comprises:
determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition;
mapping the demodulation reference signal onto the effective symbol adjacent to the splitting position in at least one actual transmission resource comprises:
and mapping the demodulation reference signal to an effective symbol in an actual transmission resource behind an ineffective symbol, wherein the actual transmission resource behind the ineffective symbol comprises an effective symbol, and the demodulation reference signal can be used by at least two actual transmission resources adjacent to the splitting position.
9. A demodulation reference signal mapping apparatus, wherein the apparatus is applied to a terminal device, and comprises:
the splitting module is used for determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition;
a mapping module, configured to map the demodulation reference signal onto an effective symbol adjacent to the splitting position in at least one actual transmission resource;
the mapping module is specifically configured to:
and mapping the demodulation reference signal to the last effective symbol in the actual transmission resource before the time slot boundary, wherein the actual transmission resource before the time slot boundary comprises a plurality of effective symbols, and the demodulation reference signal can be used by at least two actual transmission resources adjacent to the splitting position.
10. A demodulation reference signal mapping apparatus, wherein the apparatus is applied to a terminal device, and comprises:
the splitting module is used for determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition;
a mapping module, configured to map the demodulation reference signal onto an effective symbol adjacent to the splitting position in at least one actual transmission resource;
the mapping module is specifically configured to:
And mapping the demodulation reference signal to an effective symbol in an actual transmission resource before a time slot boundary, wherein the actual transmission resource before the time slot boundary comprises an effective symbol, and the demodulation reference signal can be used by at least two actual transmission resources adjacent to the splitting position.
11. A demodulation reference signal mapping apparatus, wherein the apparatus is applied to a terminal device, and comprises:
the splitting module is used for determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition;
a mapping module, configured to map the demodulation reference signal onto an effective symbol adjacent to the splitting position in at least one actual transmission resource;
the mapping module is specifically configured to:
and mapping the demodulation reference signal to an effective symbol in an actual transmission resource behind a time slot boundary, wherein the actual transmission resource behind the time slot boundary comprises an effective symbol, and the demodulation reference signal can be used by at least two actual transmission resources adjacent to the splitting position.
12. A demodulation reference signal mapping apparatus, wherein the apparatus is applied to a terminal device, and comprises:
The splitting module is used for determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition;
a mapping module, configured to map the demodulation reference signal onto an effective symbol adjacent to the splitting position in at least one actual transmission resource;
the mapping module is specifically configured to:
and mapping the demodulation reference signal to the last effective symbol in the actual transmission resources before the ineffective symbol, wherein the actual transmission resources before the ineffective symbol comprise a plurality of effective symbols, and the demodulation reference signal can be used by at least two actual transmission resources adjacent to the splitting position.
13. A demodulation reference signal mapping apparatus, wherein the apparatus is applied to a terminal device, and comprises:
the splitting module is used for determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition;
a mapping module, configured to map the demodulation reference signal onto an effective symbol adjacent to the splitting position in at least one actual transmission resource;
the mapping module is specifically configured to:
and mapping the demodulation reference signal to an effective symbol in an effective symbol previous actual transmission resource of an ineffective symbol, wherein the effective symbol previous actual transmission resource comprises an effective symbol, and the demodulation reference signal can be used by at least two actual transmission resources adjacent to the splitting position.
14. A demodulation reference signal mapping apparatus, wherein the apparatus is applied to a terminal device, and comprises:
the splitting module is used for determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition;
a mapping module, configured to map the demodulation reference signal onto an effective symbol adjacent to the splitting position in at least one actual transmission resource;
the mapping module is specifically configured to:
and mapping the demodulation reference signal to a first effective symbol in an actual transmission resource behind an ineffective symbol, wherein the actual transmission resource behind the ineffective symbol comprises a plurality of effective symbols, and the demodulation reference signal can be used by at least two actual transmission resources adjacent to the splitting position.
15. A demodulation reference signal mapping apparatus, wherein the apparatus is applied to a terminal device, and comprises:
the splitting module is used for determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition;
a mapping module, configured to map the demodulation reference signal onto an effective symbol adjacent to the splitting position in at least one actual transmission resource;
the mapping module is specifically configured to:
And mapping the demodulation reference signal to an effective symbol in an actual transmission resource behind an ineffective symbol, wherein the actual transmission resource behind the ineffective symbol comprises an effective symbol, and the demodulation reference signal can be used by at least two actual transmission resources adjacent to the splitting position.
16. A communication device comprising a processor, a transceiver, a memory and a computer program stored on the memory, the processor running the computer program to implement the demodulation reference signal mapping method of any one of claims 1-8.
17. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the demodulation reference signal mapping method according to any one of claims 1-8.
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| US11871243B2 (en) * | 2019-08-16 | 2024-01-09 | Intel Corporation | Spectrum sharing between fifth generation new radio and long term evolution in licensed and unlicensed bands |
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| CN110890948A (en) * | 2018-09-07 | 2020-03-17 | 中国移动通信有限公司研究院 | Transmission method of demodulation reference signal, network side equipment and user equipment |
| WO2020226391A1 (en) * | 2019-05-03 | 2020-11-12 | 엘지전자 주식회사 | Method, user equipment, device, and storage medium for transmitting pusch, and method and base station for receiving pusch |
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