CN112703701A - Demodulation reference signal mapping, apparatus, device and storage medium thereof - Google Patents
Demodulation reference signal mapping, apparatus, device and storage medium thereof Download PDFInfo
- Publication number
- CN112703701A CN112703701A CN202080003946.7A CN202080003946A CN112703701A CN 112703701 A CN112703701 A CN 112703701A CN 202080003946 A CN202080003946 A CN 202080003946A CN 112703701 A CN112703701 A CN 112703701A
- Authority
- CN
- China
- Prior art keywords
- reference signal
- demodulation reference
- transmission resource
- actual transmission
- symbol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000013507 mapping Methods 0.000 title claims abstract description 105
- 230000005540 biological transmission Effects 0.000 claims abstract description 265
- 238000000034 method Methods 0.000 claims abstract description 41
- 230000015654 memory Effects 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 19
- 238000004590 computer program Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 18
- 230000006872 improvement Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000010295 mobile communication Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- 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) or DMT
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a demodulation reference signal mapping, a device, 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 logical transmission resources satisfying the splitting condition; and mapping the demodulation reference signal to effective symbols adjacent to the splitting position in at least one actual transmission resource. Therefore, transmission resources are fully utilized, and technical support is provided for scenes of retransmitting information to improve coverage quality and the like.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a demodulation reference signal mapping apparatus, a demodulation reference signal mapping device, and a storage medium storing demodulation reference signal mapping apparatus.
Background
Today, mobile communication technology is rapidly developing, and it is becoming 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 considered by operators when commercializing cellular networks, because it directly affects quality of service as well as capital expenditure and operating cost.
In order to increase coverage, the protocol supports PUSCH (Physical uplink shared channel) to obtain a larger received SNR (SIGNAL to NOISE RATIO) through repeated transmission, where R16 proposes a retransmission manner of retransmission type b, which is suitable for scheduled PUSCH and grant-free scheduled PUSCH. Therefore, if transmission resources such as channels are fully utilized during retransmission, it will have a positive effect on increasing the coverage.
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 includes: determining a plurality of actual transmission resources corresponding to the logical transmission resources satisfying the splitting condition; and mapping the demodulation reference signal to effective symbols adjacent to the splitting position in at least one actual transmission resource.
Optionally, the splitting position includes: a time slot; and/or, invalid symbols.
Optionally, the mapping the demodulation reference signal to an effective symbol adjacent to the split 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 slot boundary, wherein the actual transmission resource before the slot boundary comprises a plurality of effective symbols.
Optionally, the mapping the demodulation reference signal to an effective symbol adjacent to the split 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 slot boundary, wherein the actual transmission resource before the slot boundary comprises an effective symbol.
Optionally, the mapping the demodulation reference signal to an effective symbol adjacent to the split 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 after a time slot boundary, wherein the actual transmission resource after the time slot boundary comprises a plurality of effective symbols.
Optionally, the mapping the demodulation reference signal to an effective symbol adjacent to the split position in at least one actual transmission resource includes: and mapping the demodulation reference signal to an effective symbol in an actual transmission resource after a time slot boundary, wherein the actual transmission resource after the time slot boundary comprises an effective symbol.
Optionally, the mapping the demodulation reference signal to an effective symbol adjacent to the split 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 to an effective symbol adjacent to the split 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 invalid symbol, wherein the actual transmission resource before the invalid symbol comprises an effective symbol.
Optionally, the mapping the demodulation reference signal to an effective symbol adjacent to the split 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 after an invalid symbol, wherein the actual transmission resource after the invalid symbol comprises a plurality of effective symbols.
Optionally, the mapping the demodulation reference signal to an effective symbol adjacent to the split position in at least one actual transmission resource includes: and mapping the demodulation reference signal to an effective symbol in an actual transmission resource after an invalid symbol, wherein the actual transmission resource after the invalid symbol comprises an effective symbol.
The embodiment of the second aspect of the present invention provides a demodulation reference signal mapping apparatus, where the apparatus is applied to a terminal device, and the apparatus includes: a splitting module, configured to determine a plurality of actual transmission resources corresponding to the logical transmission resources that satisfy the splitting condition; and the mapping module is used for mapping the demodulation reference signal to an effective symbol adjacent to the splitting position in at least one actual transmission resource.
An embodiment of a third aspect of the present invention provides a communication device, which includes a processor, a transceiver, a memory, and a computer program stored in the memory, where the processor runs the computer program to implement the demodulation reference signal mapping method as set forth in the embodiment of the first aspect.
A fourth aspect of the present invention provides a processor-readable storage medium, which stores a computer program for causing a processor to execute the demodulation reference signal mapping method provided in the first aspect.
The embodiment provided by the invention at least has the following technical effects:
and determining a plurality of actual transmission resources corresponding to the logic transmission resources meeting the splitting condition, and further mapping 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, coverage quality improvement and the like, and resource consumption during 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 present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of 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 demodulation reference signal mapping scenario according to a first embodiment of the present invention;
fig. 4 is a diagram illustrating 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 invention;
fig. 14 is a schematic diagram of a demodulation reference signal mapping scenario according to a twelfth embodiment of the invention;
fig. 15 is a schematic structural diagram of a demodulation reference signal mapping apparatus according to the present invention; and
fig. 16 is a block diagram of a communication device according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to 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 transmission resources such as channels.
The demodulation reference signal mapping method can be applied to any scene with transmission resources, a retransmission scene is taken as an example continuously, in order to increase coverage, a protocol supports the PUSCH to obtain 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 authorization-free scheduled PUSCH.
Specifically, the base station sends an uplink grant or an unlicensed indication of one or more nominal PUSCH retransmission. The terminal transmits one or more copies of the actual PUSCH in one slot or two or more copies of the actual PUSCH in consecutive available slots. After the terminal determines invalid symbols of the type-B-based PUSCH repetition in each nominal PUSCH time domain resource, the rest symbols can be considered as potential valid symbols. If the number of continuous potential effective symbols in the time slot of a nominal PUSCH is more than 0, the time domain resources of one nominal PUSCH copy can be mapped to one actual PUSCH copy, and the time domain resources of one nominal PUSCH copy can comprise the time domain resources of one or more actual PUSCH copies. The terminal device does not send an actual PUSCH copy of a single symbol unless the single symbol is the duration L of the nominal PUSCH as indicated by the base station.
That is, as shown in fig. 1, when an actual PUSCH copy includes only one time domain resource (in the drawing, one time domain resource is represented by one cell, and the time domain resource may also be understood as a symbol unit in a retransmission scenario), time domain resources corresponding to the actual PUSCH copy are not wasted due to the fact that the actual PUSCH copy is transmitted, and obviously, if this part of time domain resources can be utilized, positive influence on retransmission is inevitably caused, for example, retransmission efficiency is improved.
The following describes in detail a demodulation reference signal mapping method according to an embodiment of the present invention 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:
Here, a logical transmission resource may be understood as a theoretically transmittable transmission resource defined according to a protocol, for example, a nominal PUSCH time domain resource in a retransmission scenario may be one possible example of a logical transmission resource, and an actual transmission resource may be understood as a transmission resource available for transmission according to an actual transmission environment, for example, an actual PUSCH time domain resource in a retransmission scenario may be one possible example of an actual transmission resource.
In the execution process, when the logical transmission resource meets the splitting condition, the logical transmission resource is split, and therefore, in this embodiment, a plurality of actual transmission resources corresponding to the logical transmission resource meeting the splitting condition are determined, so as to facilitate information transmission based on the actual transmission resources.
It should be noted that, in different application scenarios, the splitting conditions are different, and the manners of determining the plurality of actual transmission resources corresponding to the logical transmission resources that satisfy the splitting conditions are different, and the example is described as follows:
example one:
in this example, the transmission resources of the logical transmission resource crossing the slot boundary on both sides of the slot boundary are respectively determined as one actual transmission resource. 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 a logical transmission resource exists across the time slot, 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, it is preset that the number of symbols included in each slot is fixed, for example, as shown in fig. 3, when the transmission resource includes an S slot and a U slot, each slot includes 14 symbols, thereby resulting in a slot boundary between slots, a divided logical transmission resource Nominal # 1 spans the slot, 1 symbol spans the S slot, and 2 symbols spans the U slot, so, with continued reference to fig. 3, the logical transmission resource that spans the slot boundary can be determined as two Actual transmission resources at the slot boundary, i.e., 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 symbols (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 on both sides of the invalid symbol and belonging to the same timeslot are split into two actual transmission resources, and if there is an invalid symbol included in the logical transmission resources, the transmission resource located on one side of the invalid symbol of the logical transmission resource is directly determined as one actual transmission resource, and the transmission resource located on the other side of the invalid symbol of the logical transmission resource is determined as another actual transmission resource.
Wherein, 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, the symbol may be understood as the smallest constituent unit of a slot, which may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol in some possible examples, each symbol may be valid or invalid due to its transmission performance, in practical application, a symbol capable of carrying data sent by a current user is defined as an effective symbol, a symbol incapable of carrying data sent by the current user is defined as an invalid symbol, and since the invalid transmission symbol cannot carry the data currently sent by the user, therefore, in this embodiment, with the invalid symbol as a boundary, the transmission resources belonging to the same logical transmission resource on both sides of the invalid symbol are determined as two actual transmission resources.
For example, as shown in fig. 4, a plurality of logical transmission resources, i.e., Nominal #, are preset, wherein if symbol 3 in Nominal # 2 is an invalid transmission symbol, 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, as shown in fig. 4.
Example three:
in this example, transmission resources belonging to the same logical transmission resource on both sides of the slot boundary are determined as two actual transmission resources. The logical 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 by the fixed number of symbols. Also, a logical transmission resource 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 an invalid transmission symbol cannot carry data currently sent by a user.
For example, as shown in fig. 5, it is preset that the number of symbols included in each slot is fixed, for example, as shown in fig. 5, when the transmission resource includes an S slot and a U slot, each slot includes 14 symbols, thereby resulting in a slot boundary between the slots, a divided logical transmission resource Nominal # 1 spans the slot, 1 symbol is in the S slot, and 2 symbols are in the U slot, so, with continued reference to fig. 5, transmission resources belonging to the same logical transmission resource on both sides of the slot boundary can 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 logical transmission resources, that is, Nominal # in the figure, are preset, wherein if symbol 3 in Nominal # 2 is an invalid transmission resource, symbol 2 in Nominal # 2 is set to one Actual transmission resource Actual # 3, and symbol 4 is determined to be one Actual transmission resource Actual # 4, as shown in fig. 5.
Here, the DeModulation Reference Signal may be understood as guide information for guiding information in the 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, in all embodiments of the present invention, the DMRS is exemplified as the DeModulation Reference Signal.
In this embodiment, the demodulation reference signal is mapped to at least one effective symbol adjacent to the split position in the actual transmission resource, for example, taking the scenario shown in fig. 5 as an example, as shown in fig. 6, the DMRS is mapped to symbol 13, which is the 14 th symbol of the S slot.
Therefore, by mapping the demodulation reference signal on the effective symbol adjacent to the splitting position, on one hand, the mapping can be ensured even if the actual transmission resource only comprises one effective symbol, and the transmission resource is prevented from being wasted; on the other hand, because the mapping is to the effective signal adjacent to the splitting position, one mapping can be ensured to be used by at least two adjacent actual transmission resources, and the consumption of the resources is further reduced.
To sum up, the demodulation reference signal mapping method according to 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, coverage quality improvement and the like, and resource consumption during demodulation reference signal mapping is reduced.
In an actual implementation process, the split position may include a slot boundary, an invalid symbol, or a slot boundary and an invalid symbol, so that, in this embodiment, the actual transmission resources have diversity, and therefore, the manner of mapping the demodulation reference signal to the valid symbol adjacent to the split position in the at least one actual transmission resource also necessarily has diversity, which is illustrated below:
when the splitting position comprises a time slot boundary, the mode of mapping the demodulation reference signal to the effective symbol adjacent to the splitting position in at least one actual transmission resource at least comprises one or more of the following modes:
example one:
in this example, the demodulation reference signal is mapped to the last effective symbol in the actual transmission resource before the slot boundary, where the actual transmission resource before the slot boundary contains a plurality of effective symbols.
That is, as shown in fig. 6, by mapping the DMRS to the 14 th symbol of the S slot, the mapped DMRS may be used as a demodulation reference signal of Actual # 1, a demodulation reference signal of Actual # 2, or a demodulation reference signal of a subsequent Actual transmission resource such as Actual # 3, and the demodulation efficiency of the subsequent Actual transmission resource may be improved because the demodulation reference signal is located earlier than the slot of another Actual transmission resource.
Example two:
in this embodiment, the demodulation reference signal is mapped to an effective symbol in an actual transmission resource before the slot boundary, where the actual transmission resource before the slot boundary includes an effective symbol, that is, in the embodiment of the present invention, the 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 as an Actual transmission resource Actual # 1, and the symbols 0 and 1 are determined as 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 Actual # 1, so that the mapped DMRS may be used as a demodulation reference signal of Actual # 1, a demodulation reference signal of Actual # 2, or even a demodulation reference signal of subsequent Actual transmission resources such as Actual # 3, and since the demodulation reference signal is located before the slots of other Actual transmission resources, the demodulation efficiency of the subsequent Actual transmission resources can be improved.
Example three:
in this example, the demodulation reference signal is mapped to the first effective symbol in the actual transmission resource after the slot boundary, where the actual transmission resource after the slot boundary contains a plurality of effective symbols. That is, in this embodiment, if the actual transmission resource after the slot boundary includes a plurality of effective 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 the slot, 1 symbol is in the S slot, and 2 symbols are in the U slot, so with reference to fig. 8, i.e., determining the 14 th symbol of the S slot as an Actual transmission resource Actual # 1, and determining the 1 st and 2 nd (i.e., symbols 0 and 1) symbols of the U slot as an Actual transmission resource Actual # 2, the demodulation reference signal can 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 for Actual # 1, a demodulation reference signal for Actual # 2, or even a demodulation reference signal for subsequent Actual transmission resources such as Actual # 3, and since the demodulation reference signal Actual # 2 is located in the first symbol of itself, the information transmission efficiency in Actual # 2 is improved, and the demodulation efficiency of the subsequent Actual transmission resources can be improved before the slot of other subsequent Actual transmission resources, and the DMRS is relatively close to Actual # 1 and can be used for information transmission of Actual # 1.
Example four:
in this example, the demodulation reference signal is mapped to an effective symbol in an actual transmission resource after the slot boundary, where the actual transmission resource after the slot boundary contains an effective symbol.
For example, as shown in fig. 9, in this example, a plurality of logical transmission resources, i.e., Nominal #, in the figure are preset, wherein if symbols 12 and 13 in Nominal # 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, wherein the demodulation reference signal may be mapped to symbol 0 in Actual # 2. Thus, the mapped DMRS may be used as a demodulation reference signal for Actual # 1, a demodulation reference signal for Actual # 2, or even a demodulation reference signal for subsequent Actual transmission resources such as Actual # 3, and since the demodulation reference signal Actual # 2 is located in the first symbol of itself, the information transmission efficiency in Actual # 2 is improved, and the demodulation efficiency of the subsequent Actual transmission resources can be improved before the slot of other subsequent Actual transmission resources, and the DMRS is relatively close to Actual # 1 and can be used for information transmission of Actual # 1.
When the splitting position comprises an invalid symbol, the mode of mapping the demodulation reference signal to the valid symbol adjacent to the splitting position in at least one actual transmission resource at least comprises one or more of the following modes:
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, where the actual transmission resource preceding the invalid symbol contains a plurality of valid symbols.
For example, as shown in fig. 10, a plurality of logical transmission resources, i.e., Nominal #, in the graph are preset, wherein if symbol 2 in Nominal # 2 is an invalid transmission symbol, as shown in fig. 10, symbols 0 and 1 in Nominal # 1 are an Actual transmission resource Actual # 2, and symbols 3 and 4 are an Actual transmission resource Actual # 3, the DMRS may be mapped to the last valid symbol, i.e., symbol 1, in Actual # 2. Therefore, the mapped DMRS may be used as a demodulation reference signal of Actual # 2, a demodulation reference signal of Actual # 3, or even a demodulation reference signal of subsequent Actual transmission resources such as Actual # 4, and since the demodulation reference signal is located before a slot of other Actual transmission resources, the demodulation efficiency of the subsequent Actual transmission resources may be improved.
Example two:
in this example, the demodulation reference signal is mapped to a valid symbol in an actual transmission resource preceding the invalid symbol, where the actual transmission resource preceding the invalid symbol contains one valid symbol.
For example, as shown in fig. 11, a plurality of logical transmission resources, that is, Nominal #, in the graph are preset, wherein if symbol 3 in Nominal # 2 is an invalid transmission symbol, as shown in fig. 10, symbol 2 in Nominal # 2 is an Actual transmission resource Actual # 3, and symbol 4 is an Actual transmission resource Actual # 4, the DMRS may be mapped to symbol 2, which is an effective symbol in Actual # 3. Therefore, the mapped DMRS may be used as a demodulation reference signal of Actual # 3, a demodulation reference signal of Actual # 4, or even a demodulation reference signal of subsequent Actual transmission resources such as Actual # 5, and since the demodulation reference signal is located before a slot of other Actual transmission resources, the demodulation efficiency of the subsequent Actual transmission resources may be improved.
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, where the actual transmission resource following the invalid symbol contains a plurality of valid symbols.
For example, as shown in fig. 12, a plurality of logical transmission resources, i.e., Nominal #, in the graph are preset, wherein if symbol 2 in Nominal # 2 is an invalid transmission symbol, as shown in fig. 12, symbols 3 and 4 in Nominal # 2 are one Actual transmission resource Actual # 3, and the DMRS may be mapped to the first valid symbol, i.e., symbol 3, in Actual # 3. Therefore, the mapped DMRS may be used as a demodulation reference signal of Actual # 3, a demodulation reference signal of Actual # 2, or even a demodulation reference signal of subsequent Actual transmission resources such as Actual # 4, and since the demodulation reference signal is located before a slot of other Actual transmission resources, the demodulation efficiency of the subsequent Actual transmission resources may be improved.
Example four:
in this example, the demodulation reference signal is mapped to a valid symbol in an actual transmission resource following an invalid symbol, where the actual transmission resource following the invalid symbol contains a valid symbol.
For example, as shown in fig. 13, a plurality of logical transmission resources, that is, Nominal #, in the graph are preset, wherein if symbol 3 in Nominal # 2 is an invalid transmission symbol, as shown in fig. 13, symbol 2 in Nominal # 2 is an Actual transmission resource Actual # 3, and symbol 4 is an Actual transmission resource Actual # 4, the DMRS may be mapped to an effective symbol, that is, symbol 4 in Actual # 4. Therefore, the mapped DMRS may be used as a demodulation reference signal of Actual # 3, a demodulation reference signal of Actual # 4, or even a demodulation reference signal of subsequent Actual transmission resources such as Actual # 5, and since the demodulation reference signal is located before a slot of other Actual transmission resources, the demodulation efficiency of the subsequent Actual transmission resources may be improved.
When the split position includes both an invalid symbol and a slot boundary, as a possible implementation manner, mapping the demodulation reference signal onto a last valid symbol in at least one actual transmission resource adjacent to the split position in the combination of the above embodiments, where the actual transmission resource before the slot boundary includes a plurality of valid symbols, and mapping the demodulation reference signal onto a last valid symbol in the actual transmission resource before the invalid symbol includes a plurality of valid symbols, as a possible implementation manner.
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 Actual # 1, a demodulation reference signal of Actual # 2, or even a demodulation reference signal of a subsequent Actual transmission resource such as Actual # 3. A plurality of logical transmission resources, i.e., Nominal #, are preset, wherein if symbol 4 in Nominal # 2 is an invalid transmission symbol, as shown in fig. 14, symbols 2 and 3 in Nominal # 2 are an Actual transmission resource Actual # 3, and the DMRS can be mapped to the last valid symbol, i.e., symbol 3, in Actual # 3. Therefore, the mapped DMRS may be used as a demodulation reference signal of Actual # 3, a demodulation reference signal of Actual # 4, or even a demodulation reference signal of subsequent Actual transmission resources such as Actual # 5, and since the demodulation reference signal is located before a slot of other Actual transmission resources, the demodulation efficiency of the subsequent Actual transmission resources may be improved. Therefore, the DMRS can be mapped not only to each DMRS but also to the actual transmission resource, and the DMRS is not mapped only to the position of the slot boundary or the invalid symbol of the actual transmission resource, and the DMRS is determined by combining the position of the slot boundary and the position of 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 according to the embodiment of the present invention flexibly maps the demodulation reference signal according to the actual transmission resource situation before and after the split position, thereby balancing the effective utilization of the transmission resource and the consumption of the transmission resource.
The embodiments of the demodulation reference signal mapping method are also applicable to the demodulation reference signal mapping apparatus provided in this embodiment, and are not described in detail in this embodiment.
Fig. 15 is a schematic structural diagram of a demodulation reference signal mapping apparatus according to the present invention.
Fig. 15 is a schematic structural diagram of a demodulation reference signal mapping apparatus applied to a first terminal according to an embodiment of the present invention, as shown in fig. 15, the demodulation reference signal mapping apparatus includes: a split module 1501, a mapping module 1502, wherein,
a splitting module 1501, configured to determine a plurality of actual transmission resources corresponding to the logical transmission resources that satisfy the splitting condition;
a mapping module 1502 is configured to map the demodulation reference signal to an effective symbol adjacent to the split position in at least one actual transmission resource.
To sum up, the demodulation reference signal mapping apparatus according to 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, coverage quality improvement and the like, and resource consumption during demodulation reference signal mapping is reduced.
The invention also provides a communication device and a readable storage medium according to the embodiment of the invention.
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. The communication device is intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The communication device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. 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 apparatus includes: one or more processors 1401, a memory 1402, and interfaces for connecting the various 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 for execution within the communication device, including instructions stored in or on the memory to display graphical information of a GUI on an external input/output apparatus (such as a display device coupled to the interface). In other embodiments, multiple processors and/or multiple buses may be used, along with multiple memories and multiple memories, as desired. Also, multiple communication devices may be connected, with each device providing portions of the necessary operations (e.g., as a server array, a group of blade servers, or a multi-processor system). Fig. 16 illustrates an example of a processor 1601.
The memory 1602 is a non-transitory computer readable storage medium provided by the present invention. Wherein the memory stores instructions executable by 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, which is a non-transitory computer-readable storage medium, may 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 by running non-transitory software programs, instructions, and modules stored in the memory 1602, that is, implements the demodulation reference signal mapping method in the above method embodiment.
The memory 1602 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created from use of the positioning communication device, and the like. Further, the 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 optionally include memory remotely located from the processor 1601 and such remote memory may be coupled to the located communication device via 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 that performs demodulation reference signal mapping may further include: an input device 1603 and an output device 1604. The processor 1601, the memory 1602, the input device 1603, and the output device 1604 may be connected by a bus or other means, which is exemplified in fig. 16.
The input device 1603 may receive input numeric or character information and generate key signal inputs related to positioning user settings and function control of the communication apparatus, such as a touch screen, a keypad, a mouse, a track pad, a touch pad, a pointing stick, one or more mouse buttons, a track ball, a joystick, or other input device. The output devices 1604 may include a display device, auxiliary lighting devices (e.g., LEDs), tactile feedback devices (e.g., vibrating motors), and the like. 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 can be a touch screen.
Various implementations of the systems and techniques described here can be realized in digital electronic circuitry, integrated circuitry, application specific ASICs (application specific integrated circuits), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.
These computer programs (also known as programs, software applications, or code) include machine instructions for a programmable processor, and may be implemented using high-level procedural and/or object-oriented programming languages, and/or assembly/machine languages. 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 a pointing device (e.g., a mouse or a 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 can 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, speech, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a back-end 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 back-end, 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 clients and servers. A client and server are generally 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 executing the demodulation reference signal mapping method of the embodiment of the invention determines a plurality of actual transmission resources corresponding to the logical 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, coverage quality improvement and the like, and resource consumption during demodulation reference signal mapping is reduced.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present application may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solutions disclosed in the present invention can be achieved.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A demodulation reference signal mapping method is applied to a terminal device and comprises the following steps:
determining a plurality of actual transmission resources corresponding to the logical transmission resources satisfying the splitting condition;
and mapping the demodulation reference signal to effective symbols adjacent to the splitting position in at least one actual transmission resource.
2. The method of claim 1, wherein the splitting location comprises:
a time slot boundary; and/or the presence of a gas in the gas,
an invalid symbol.
3. The method of claim 1, wherein the mapping the demodulation reference signal to the effective symbol adjacent to the split 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 slot boundary, wherein the actual transmission resource before the slot boundary comprises a plurality of effective symbols.
4. The method of claim 1, wherein the mapping the demodulation reference signal to the effective symbol adjacent to the split 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 slot boundary, wherein the actual transmission resource before the slot boundary comprises an effective symbol.
5. The method of claim 1, wherein the mapping the demodulation reference signal to the effective symbol adjacent to the split 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 after a time slot boundary, wherein the actual transmission resource after the time slot boundary comprises a plurality of effective symbols.
6. The method of claim 1, wherein the mapping the demodulation reference signal to the effective symbol adjacent to the split position in at least one actual transmission resource comprises:
and mapping the demodulation reference signal to an effective symbol in an actual transmission resource after a time slot boundary, wherein the actual transmission resource after the time slot boundary comprises an effective symbol.
7. The method of claim 1, wherein the mapping the demodulation reference signal to the effective symbol adjacent to the split 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 ineffective symbol, wherein the actual transmission resource before the ineffective symbol comprises a plurality of effective symbols.
8. The method of claim 1, wherein the mapping the demodulation reference signal to the effective symbol adjacent to the split 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 an invalid symbol, wherein the actual transmission resource before the invalid symbol comprises an effective symbol.
9. The method of claim 1, wherein the mapping the demodulation reference signal to the effective symbol adjacent to the split 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 after an invalid symbol, wherein the actual transmission resource after the invalid symbol comprises a plurality of effective symbols.
10. The method of claim 1, wherein the mapping the demodulation reference signal to the effective symbol adjacent to the split position in at least one actual transmission resource comprises:
and mapping the demodulation reference signal to an effective symbol in an actual transmission resource after an invalid symbol, wherein the actual transmission resource after the invalid symbol comprises an effective symbol.
11. A demodulation reference signal mapping device, applied to a terminal device, includes:
a splitting module, configured to determine a plurality of actual transmission resources corresponding to the logical transmission resources that satisfy the splitting condition;
and the mapping module is used for mapping the demodulation reference signal to an effective symbol adjacent to the splitting position in at least one actual transmission resource.
12. 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 according to any one of claims 1 to 10.
13. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to execute the demodulation reference signal mapping method according to any one of claims 1 to 10.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/137770 WO2022126654A1 (en) | 2020-12-18 | 2020-12-18 | Demodulation reference signal mapping method and apparatus, and device and storage medium therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112703701A true CN112703701A (en) | 2021-04-23 |
| CN112703701B CN112703701B (en) | 2023-11-14 |
Family
ID=75514811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080003946.7A Active CN112703701B (en) | 2020-12-18 | 2020-12-18 | Demodulation reference signal mapping, apparatus, device and storage medium thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112703701B (en) |
| WO (1) | WO2022126654A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 device and user equipment |
| WO2020223976A1 (en) * | 2019-05-09 | 2020-11-12 | Oppo广东移动通信有限公司 | Wireless communication method, terminal device, and network device |
| 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 |
| US20200382354A1 (en) * | 2019-08-16 | 2020-12-03 | Intel Corporation | Spectrum sharing between fifth generation new radio and long term evolution in licensed and unlicensed bands |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102225640B1 (en) * | 2018-02-14 | 2021-03-12 | 엘지전자 주식회사 | Method for performing uplink transmission through frequency hopping in wireless communication system and apparatus therefor |
-
2020
- 2020-12-18 WO PCT/CN2020/137770 patent/WO2022126654A1/en active Application Filing
- 2020-12-18 CN CN202080003946.7A patent/CN112703701B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 device 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 |
| WO2020223976A1 (en) * | 2019-05-09 | 2020-11-12 | Oppo广东移动通信有限公司 | Wireless communication method, terminal device, and network device |
| US20200382354A1 (en) * | 2019-08-16 | 2020-12-03 | Intel Corporation | Spectrum sharing between fifth generation new radio and long term evolution in licensed and unlicensed bands |
Non-Patent Citations (3)
| Title |
|---|
| NOKIA等: "\"Summary of email discussion #1 for PUSCH enhancements for NR eURLLC (AI 7.2.5.3)\"", 《3GPP TSG-RAN WG1 MEETING #100，R1-200XXXX》, pages 2 * |
| NOKIA等: ""Summary of email discussion #1 for PUSCH enhancements for NR eURLLC (AI 7.2.5.3)"", 《3GPP TSG-RAN WG1 MEETING #100，R1-200XXXX》 * |
| NOKIA等: ""Summary of email discussion #1 for PUSCH enhancements for NR eURLLC (AI 7.2.5.3)"", 《3GPP TSG-RAN WG1 MEETING #100，R1-200XXXX》, 6 March 2020 (2020-03-06), pages 2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022126654A1 (en) | 2022-06-23 |
| CN112703701B (en) | 2023-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110535604B (en) | Rate matching method and device | |
| US20240313851A1 (en) | Method and device for determining satellite link information | |
| EP3816802A2 (en) | Method and device for processing mini program data | |
| WO2022126318A1 (en) | Sidelink communication method and apparatus, and communication device and storage medium | |
| CN103501295A (en) | Virtual machine migration-based remote access method and equipment | |
| WO2022178779A1 (en) | Beam indication method and apparatus | |
| WO2022151102A1 (en) | Method and apparatus for determining scheduling request resource, and communication device | |
| CN112703701B (en) | Demodulation reference signal mapping, apparatus, device and storage medium thereof | |
| US11516276B1 (en) | Dynamically switching between synchronous and asynchronous communication channels | |
| WO2022165760A1 (en) | Early termination method and apparatus, communication device, and storage medium | |
| US20230413330A1 (en) | Data transmission method and apparatus, base station, user terminal, and electronic device | |
| KR20230153487A (en) | DISCONTINUOUS RECEPTION PROCESSING METHOD AND APPARATUS, TERMINAL DEVICE, AND STORAGE MEDIUM | |
| WO2022165761A1 (en) | Early termination method and apparatus, device, and storage medium | |
| CN112956154B (en) | Scheduling information sending method, scheduling information receiving method and device | |
| CN112771936B (en) | Method and device for determining search space | |
| WO2022082652A1 (en) | Communication method and apparatus for wireless mode switching, and electronic device | |
| JP7579982B2 (en) | Data retransmission decision method and device | |
| CN112789945B (en) | Discontinuous receiving method and device | |
| CN113243092B (en) | Communication method and device | |
| CN115066853A (en) | Demodulation reference signal DMRS (demodulation reference signal) configuration method, device and equipment and storage medium thereof | |
| US20230354295A1 (en) | Method and apparatus for switching scheduling mode | |
| US20240088974A1 (en) | Beam indication method and apparatus, and beam determination method and apparatus | |
| WO2022116164A1 (en) | Positioning method and apparatus, and communication device and storage medium | |
| Sumalatha et al. | A novel thin client architecture with hybrid push-pull model, adaptive display pre-fetching and graph colouring | |
| Sridhar et al. | Adaptive display virtualization and dataflow model selection (ADVADAMS) for reducing interaction latency in thin clients |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |