[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CN110351035B - Method for determining pilot frequency position, terminal and base station - Google Patents

Method for determining pilot frequency position, terminal and base station Download PDF

Info

Publication number
CN110351035B
CN110351035B CN201810288559.7A CN201810288559A CN110351035B CN 110351035 B CN110351035 B CN 110351035B CN 201810288559 A CN201810288559 A CN 201810288559A CN 110351035 B CN110351035 B CN 110351035B
Authority
CN
China
Prior art keywords
dmrs
symbol
symbols
determining
terminal
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.)
Active
Application number
CN201810288559.7A
Other languages
Chinese (zh)
Other versions
CN110351035A (en
Inventor
邢艳萍
高秋彬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Datang Mobile Communications Equipment Co Ltd
Original Assignee
Datang Mobile Communications Equipment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Datang Mobile Communications Equipment Co Ltd filed Critical Datang Mobile Communications Equipment Co Ltd
Priority to CN201810288559.7A priority Critical patent/CN110351035B/en
Publication of CN110351035A publication Critical patent/CN110351035A/en
Application granted granted Critical
Publication of CN110351035B publication Critical patent/CN110351035B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2675—Pilot or known symbols
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states

Landscapes

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

Abstract

The invention provides a method for determining a pilot frequency position, a terminal and a base station, which solve the problem that available resources for data transmission can be reduced if the pilot frequency capacity is improved by increasing the number of pilot frequency symbols. The determination method of the invention comprises the following steps: determining a first DMRS starting symbol; determining a second DMRS starting symbol according to the DMRS symbol offset notified by the base station, wherein the DMRS symbol offset refers to the number of symbols of the second DMRS starting symbol relative to the offset of the first DMRS starting symbol; and determining the DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol. The network side informs the terminal of the DMRS symbol offset, so that different UE can be configured with different symbol offsets to realize different DMRS symbol positions of different UE, and the DMRS symbol positions are used for supporting non-orthogonal multiplexing of pilot frequency and data, thereby saving pilot frequency overhead and reserving more resources for data transmission.

Description

Method for determining pilot frequency position, terminal and base station
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, a terminal, and a base station for determining a pilot frequency position.
Background
Currently, a non-orthogonal multiple access technology is being researched in a new air interface NR, and by adopting the non-orthogonal multiple access technology, more users can be allowed to share the same time frequency resource, so that the requirement on the number of pilot frequencies is increased.
For a particular time-frequency resource allocation, the starting symbol position of the Demodulation Reference Signal (DMRS) is fixed. Specifically, for mapping type a, the starting symbol of DMRS is the 3 rd or 4 th symbol of the slot in which the notification is broadcast; for mapping type B, the starting symbol of DMRS is the starting symbol of the data channel.
In order to improve pilot capacity, the number of DMRS symbols needs to be further increased, for example, the number of DMRS symbols is extended to 4 symbols, and then the DMRS can be supported to 24 ports. Taking a Physical Downlink Shared Channel (PDSCH) mapping type a as an example, the number of symbols that can be used for data Channel transmission in a slot is at most 10 symbols. It can be seen that if the pilot capacity is increased by increasing the number of pilot symbols, the available resources for data transmission are reduced with the increase of the pilot overhead, thereby reducing the spectrum efficiency.
Disclosure of Invention
The present invention provides a method, a terminal and a base station for determining a pilot frequency position, so as to solve the problem that if the pilot frequency capacity is increased by increasing the number of pilot frequency symbols, the available resources for data transmission are reduced.
In order to achieve the above object, an embodiment of the present invention provides a method for determining a pilot frequency position, which is applied to a terminal, and includes:
determining a first demodulation reference signal (DMRS) starting symbol;
determining a second DMRS starting symbol according to DMRS symbol offset notified by a base station, wherein the DMRS symbol offset refers to the number of symbols of the second DMRS starting symbol offset relative to the first DMRS starting symbol offset;
and determining the DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol.
Before the step of determining the second DMRS starting symbol according to the DMRS symbol offset notified by the base station, the method further includes:
and acquiring the DMRS symbol offset notified by the base station through a Radio Resource Control (RRC) message or Downlink Control Information (DCI).
The step of determining the DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol includes:
taking N symbols starting from the second DMRS start symbol as the DMRS symbols;
and N is the number of the DMRS symbols and is a positive integer.
After the step of determining the DMRS symbols occupied by the DMRS according to the number of DMRS symbols notified by the base station and the second DMRS start symbol, the method further includes:
Determining a target symbol occupied by an additional DMRS according to the DMRS symbol;
and when the time domain position corresponding to the target symbol exceeds the time domain position corresponding to the target data channel, determining that the additional DMRS does not exist.
The first DMRS starting symbol is a preset symbol in a time slot appointed by a protocol;
alternatively, the first DMRS start symbol refers to the ith relative to the reference symbol/0A symbol;
wherein l and l0Are all natural numbers.
In order to achieve the above object, an embodiment of the present invention further provides a method for determining a pilot frequency position, which is applied to a base station, and includes:
notifying the terminal of the configured DMRS symbol offset;
the DMRS symbol offset refers to the number of symbols of the second DMRS start symbol offset with respect to the first DMRS start symbol.
The method for determining the pilot frequency position further includes:
and informing the terminal of the number of the DMRS symbols.
The step of notifying the configured DMRS symbol offset to the terminal includes:
and notifying the configured DMRS symbol offset to the terminal through a Radio Resource Control (RRC) message or Downlink Control Information (DCI).
The first DMRS starting symbol is a preset symbol in a time slot appointed by a protocol;
Alternatively, the first DMRS start symbol refers to the ith relative to the reference symbol/0A symbol;
wherein l and l0Are all natural numbers.
In order to achieve the above object, an embodiment of the present invention further provides a terminal, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
determining a first demodulation reference signal (DMRS) starting symbol;
determining a second DMRS starting symbol according to DMRS symbol offset notified by a base station, wherein the DMRS symbol offset refers to the number of symbols of the second DMRS starting symbol offset relative to the first DMRS starting symbol offset;
and determining the DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol.
Wherein the processor, when executing the computer program, further implements the steps of:
and acquiring the DMRS symbol offset notified by the base station through Radio Resource Control (RRC) information or Downlink Control Information (DCI).
Wherein the processor, when executing the computer program, further implements the steps of:
taking N symbols starting from the second DMRS start symbol as the DMRS symbols;
And N is the number of the DMRS symbols and is a positive integer.
Wherein the processor when executing the computer program is further operable to:
determining a target symbol occupied by an additional DMRS according to the DMRS symbol;
and when the time domain position corresponding to the target symbol exceeds the time domain position corresponding to the target data channel, determining that the additional DMRS does not exist.
The first DMRS starting symbol is a preset symbol in a time slot appointed by a protocol;
alternatively, the first DMRS starting symbol refers to the ith relative to the reference symbol/0A symbol;
wherein l and l0Are all natural numbers.
In order to achieve the above object, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the method for determining the pilot positions as described above.
In order to achieve the above object, an embodiment of the present invention further provides a base station, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
notifying the configured DMRS symbol offset to a terminal through a transceiver;
The DMRS symbol offset is the number of symbols in which the second DMRS starting symbol is offset with respect to the first DMRS starting symbol.
Wherein the processor when executing the computer program is further operable to:
and informing the terminal of the number of the DMRS symbols.
Wherein the processor, when executing the computer program, further implements the steps of:
and notifying the configured DMRS symbol offset to the terminal through a Radio Resource Control (RRC) message or Downlink Control Information (DCI).
The first DMRS starting symbol is a preset symbol in a time slot appointed by a protocol;
alternatively, the first DMRS start symbol refers to the ith relative to the reference symbol/0A symbol;
wherein l and l0Are all natural numbers.
In order to achieve the above object, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the method for determining the pilot positions as described above.
In order to achieve the above object, an embodiment of the present invention further provides a terminal, including:
a first determining module, configured to determine a first demodulation reference signal DMRS starting symbol;
a second determining module, configured to determine a second DMRS starting symbol according to a DMRS symbol offset notified by a base station, where the DMRS symbol offset is a number of symbols of the second DMRS starting symbol offset relative to the first DMRS starting symbol;
And the third determining module is used for determining the DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol.
The terminal of the embodiment of the invention further comprises:
and the acquisition module is used for acquiring the DMRS symbol offset notified by the base station through the Radio Resource Control (RRC) message or the Downlink Control Information (DCI).
Wherein the third determining means is for considering N symbols starting from the second DMRS start symbol as the DMRS symbol;
and N is the number of the DMRS symbols and is a positive integer.
The terminal of the embodiment of the invention further comprises:
a fourth determining module, configured to determine, according to the DMRS symbol, a target symbol occupied by an additional DMRS;
and a fifth determining module, configured to determine that the additional DMRS does not exist when the time domain position corresponding to the target symbol exceeds the time domain position corresponding to the target data channel.
In order to achieve the above object, an embodiment of the present invention further provides a base station, including:
the first sending module is used for notifying the configured DMRS symbol offset to the terminal;
the DMRS symbol offset refers to the number of symbols of the second DMRS start symbol offset with respect to the first DMRS start symbol.
The base station of the embodiment of the invention further comprises:
and the second sending module is used for informing the terminal of the number of the DMRS symbols.
The first sending module is configured to notify the terminal of the configured DMRS symbol offset through a radio resource control RRC message or a downlink control information DCI.
The embodiment of the invention has the following beneficial effects:
according to the technical scheme, a first demodulation reference signal DMRS initial symbol is determined; determining a second DMRS starting symbol according to the DMRS symbol offset notified by the base station; and determining the DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol. In the embodiment of the invention, the network side informs the terminal of the DMRS symbol offset, so that different UE can be configured with different symbol offsets to realize different DMRS symbol positions of different UE, and the DMRS symbol positions are used for supporting the non-orthogonal multiplexing of pilot frequency and data, thereby saving the pilot frequency overhead and reserving more resources for data transmission.
Drawings
FIG. 1 is a flowchart of a method for determining a pilot position according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a first location of a DMRS in an embodiment of the present invention;
fig. 3 is a diagram illustrating a second location of a DMRS in an embodiment of the present invention;
Fig. 4 is a schematic diagram of a third location of a DMRS in an embodiment of the present invention;
fig. 5 is a fourth schematic location diagram of a DMRS in an embodiment of the present invention;
fig. 6 is a schematic diagram of a fifth location of a DMRS in an embodiment of the present invention;
fig. 7 is a schematic diagram of a sixth location of a DMRS in an embodiment of the present invention;
FIG. 8 is a second flowchart of a method for determining a pilot position according to an embodiment of the present invention;
fig. 9 is a block diagram of a terminal according to an embodiment of the present invention;
fig. 10 is a block diagram of a terminal according to an embodiment of the present invention;
fig. 11 is a block diagram of a base station according to an embodiment of the present invention;
fig. 12 is a block diagram of a base station according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a flowchart illustrating a method for determining a pilot position according to an embodiment of the present invention, and as shown in fig. 1, the method for determining a pilot position according to an embodiment of the present invention is applied to a terminal, and includes:
Step 101: determining a first demodulation reference signal (DMRS) starting symbol.
The first DMRS starting symbol in the embodiment of the invention is a preset symbol in a time slot appointed by a protocol; alternatively, the first DMRS starting symbol refers to the ith relative to the reference symbol/0A symbol;
wherein l and l0Are all natural numbers.
For example, the first DMRS starting symbol may be agreed to be the first symbol of a slot by a protocol, or the first DMRS starting symbol may be agreed to be the first symbol of a data channel within a slot.
In the above description, the first DMRS start symbol refers to the l-th symbol relative to the reference symbol l0Per symbol, the above-described first DMRS start symbol may be determined in the following manner.
The position of the first DMRS starting symbol in NR is the l < th > of a relative reference point l0A symbol. The NR uplink and downlink have two DMRS mapping types, namely a mapping type A, a mapping type B, different mapping type reference points and a mapping type I0Have different values.
For example, for PDSCH mapping type a:
l is the start of the time slot;
if the higher layer parameter DL-DMRS-typeA-pos is 3, then l03; otherwise l0＝2；
For PDSCH mapping type B:
l is the start of the assigned PDSCH; l0＝0。
Wherein the DL-DMRS-typeA-pos is notified by a broadcast message. And the UE further determines that the number of the symbols of the DMRS is 1 or 2 according to the configuration of the high-layer parameter DL-DMRS-max-len. The DMRS with 1 symbol supports at most 6 ports, and the DMRS with 2 symbols supports at most 12 ports.
Assuming that DL-DMRS-typeA-pos is 2 and DL-DMRS-max-len is 2, the DMRS symbol positions of PDSCH mapping type a are as shown in fig. 2. And obtaining a third symbol of which the first DMRS starting symbol is a time slot n.
For PDSCH mapping type B, the first DMRS starting symbol is the first symbol of the PDSCH. If the symbol where the PDSCH is located is overlapped with a control resource set CORESET, the first DMRS starting symbol is delayed backwards to the first symbol after the CORESET is finished.
Assuming that the PDSCH occupies symbols 2 to 8 within the slot and the number of DMRS symbols is 2, the first DMRS symbols are 2 nd and 3 rd symbols of the PDSCH due to overlap with CORESET, as shown in fig. 3. And obtaining a fourth symbol of which the first DMRS starting symbol is a time slot n.
And for the condition that the frequency hopping of the physical uplink shared channel PUSCH is not started, the method for determining the symbol position of the DMRS is consistent with the downlink. And if frequency hopping is started, replacing the reference point l with the beginning of each hop, and further determining the symbol position of the DMRS in each hop according to the method.
Step 102: and determining a second DMRS starting symbol according to the DMRS symbol offset notified by the base station, wherein the DMRS symbol offset refers to the number of symbols of the second DMRS starting symbol offset relative to the first DMRS starting symbol.
Further, before the step 102, the method further includes:
and acquiring the DMRS symbol offset notified by the base station through Radio Resource Control (RRC) information or Downlink Control Information (DCI).
Here, the network side notifies the terminal of the DMRS symbol offset, so that different UEs can be configured with different symbol offsets to realize different DMRS symbol positions for the different UEs, and the DMRS symbol positions are used to support non-orthogonal multiplexing of pilot and data, thereby saving pilot overhead and reserving more resources for data transmission.
Step 103: and determining the DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol.
Specifically, the DMRS symbols are N symbols starting from the second DMRS starting symbol;
and N is the number of the DMRS symbols and is a positive integer.
Further, after the step of determining the DMRS symbols occupied by the DMRS according to the number of DMRS symbols notified by the base station and the second DMRS start symbol, the method further includes:
determining a target symbol occupied by an additional DMRS according to the DMRS symbol; and when the time domain position corresponding to the target symbol exceeds the time domain position corresponding to the target data channel, determining that the additional DMRS does not exist.
The method for determining the pilot frequency position determines a first demodulation reference signal (DMRS) initial symbol; determining a second DMRS starting symbol according to the DMRS symbol offset notified by the base station; and determining the DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol. In the embodiment of the invention, the network side informs the terminal of the DMRS symbol offset, so that different UE can be configured with different symbol offsets to realize different DMRS symbol positions of different UE, and the DMRS symbol positions are used for supporting the non-orthogonal multiplexing of pilot frequency and data, thereby saving the pilot frequency overhead and reserving more resources for data transmission.
The following describes a specific implementation of an embodiment of the present invention.
Implementation mode one
The UE determines a first DMRS initial symbol according to a determination method of the existing NR DMRS initial symbol;
the UE determines a second DMRS starting symbol according to the DMRS symbol offset notified by the network side, wherein the symbol offset is the number of symbols offset relative to the first DMRS starting symbol;
and the UE determines that the DMRS occupies N symbols starting from the second DMRS initial symbol according to the number N of the DMRS symbols notified by the network side.
For example, assuming that the network side informs the UE1 and the UE2PDSCH that mapping type a is adopted, and the network side informs DL-DMRS-typeA-pos of 2 through a system message, the UE1 and the UE2 determine that the first DMRS start symbol is the 3 rd symbol in the slot. The network side informs the UE1 that the DMRS symbol offset is 0, and the UE2 that the DMRS symbol offset is 2, then the UE1 determines that the second DMRS starting symbol is the 3 rd symbol in the time slot; the UE2 determines the second DMRS start symbol to be the 5 th symbol in the slot. Assuming that the number of DMRS symbols notified by the network side is 2, the DMRS symbol position of the UE1 is shown in fig. 2, and the DMRS symbol position of the UE2 is shown in fig. 4.
For another example, assume that PUSCH symbols allocated by the network side for UE1 and UE2 are intra-slot symbols 3 to 13, and indicate PUSCH mapping type B, and neither is configured with frequency hopping. Suppose that the DMRS symbol offset of the UE1 notified by the network side is 0, the DMRS symbol offset of the UE2 is 2, the DMRS symbols configured for the UE1 and the UE2 by the network side are both 2, and the number of additional DMRS UL-DMRS-add-pos is 1. The UE1 determines that the first DMRS start symbols are symbols 3 and 12, i.e., the 4 th symbol and the 13 th symbol. The UE2 determines the first DMRS start symbols to be symbols 5 and 14, i.e., the 5 th symbol and the 14 th symbol.
Since the symbol 14 exceeds the time domain location of the PUSCH, the additional DMRS of the UE2 is not transmitted. The DMRS symbol positions for UE1 are shown in fig. 5, and the DMRS symbol positions for UE2 are shown in fig. 6.
Implementation mode two
The protocol appoints a first DMRS starting symbol as a first symbol of a time slot;
the UE determines a second DMRS starting symbol according to the DMRS symbol offset notified by the network side, wherein the symbol offset is the number of symbols offset relative to the first DMRS starting symbol;
and the UE determines that the DMRS occupies N symbols starting from the second DMRS initial symbol according to the number N of the DMRS symbols notified by the network side.
Assuming that the network side informs the UE1 that the DMRS symbol offset is 2 and the DMRS symbol offset of the UE2 is 4, the UE1 determines that the second DMRS starting symbol is the 3 rd symbol in the slot; the UE2 determines the second DMRS start symbol to be the 4 th symbol in the slot. Assuming that the number of DMRS symbols notified by the network side is 2, the DMRS symbol position of the UE1 is shown in fig. 2, and the DMRS symbol position of the UE2 is shown in fig. 4.
Implementation mode three
The protocol appoints a first DMRS starting symbol as a first symbol of a data channel in a time slot;
the UE determines a second DMRS starting symbol according to the DMRS symbol offset notified by the network side, wherein the symbol offset is the number of symbols offset relative to the first DMRS starting symbol;
and the UE determines that the DMRS occupies N symbols starting from the second DMRS initial symbol according to the number N of the DMRS symbols notified by the network side.
The PUSCH symbols allocated by the network side for UE1 and UE2 are assumed to be symbols 3 to 13 in the slot, and neither is configured with frequency hopping. The number of DMRS symbols configured for UE1 and UE2 on the network side is assumed to be 2. Then UE1 and UE2 determine the first DMRS start symbol to be symbol 3.
The network side informs the UE1 that the DMRS symbol offset is 0, and the DMRS symbol offset of the UE2 is 2, then the UE1 determines that the second DMRS starting symbol is symbol 3, and the UE2 determines that the second DMRS starting symbol is symbol 5. The DMRS symbol positions for UE1 are shown in fig. 7, and the DMRS symbol positions for UE2 are shown in fig. 6.
The method for determining the pilot frequency position determines a first demodulation reference signal (DMRS) initial symbol; determining a second DMRS starting symbol according to the DMRS symbol offset notified by the base station; and determining the DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol. In the embodiment of the invention, the network side informs the terminal of the DMRS symbol offset, so that different UE can be configured with different symbol offsets to realize different DMRS symbol positions of different UE, and the DMRS symbol positions are used for supporting the non-orthogonal multiplexing of pilot frequency and data, thereby saving the pilot frequency overhead and reserving more resources for data transmission.
As shown in fig. 8, an embodiment of the present invention further provides a method for determining a pilot frequency position, which is applied to a base station, and includes:
step 801: informing the configured DMRS symbol offset to a terminal;
the DMRS symbol offset is the number of symbols in which the second DMRS starting symbol is offset with respect to the first DMRS starting symbol.
The first DMRS starting symbol is a preset symbol in a time slot appointed by a protocol; alternatively, the first DMRS starting symbol refers to the ith relative to the reference symbol/0A symbol; l and l0Are all natural numbers.
Specifically, the configured DMRS symbol offset is notified to the terminal through a radio resource control RRC message or downlink control information DCI.
Further, the method for determining the pilot frequency position according to the embodiment of the present invention further includes:
and informing the terminal of the number of the DMRS symbols.
And informing the terminal of the number of the DMRS symbols so that the terminal determines the DMRS symbols occupied by the DMRS according to the number of the DMRS symbols informed by the base station and the second DMRS starting symbol.
The network side can configure different DMRS symbol offsets for different UEs, thereby realizing different pilot frequency starting symbol positions of different UEs on the same time-frequency resource, and further realizing that the number of supported antenna ports is increased on the premise of not increasing the number of DMRS symbols.
As shown in fig. 9, an embodiment of the present invention further provides a terminal, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
determining a first demodulation reference signal (DMRS) starting symbol;
determining a second DMRS starting symbol according to DMRS symbol offset notified by a base station, wherein the DMRS symbol offset refers to the number of symbols of the second DMRS starting symbol offset relative to the first DMRS starting symbol offset;
and determining the DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol.
In fig. 9, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 900, and various circuits, represented by memory 920, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 910 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 930 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 in performing operations.
Optionally, the processor 900 is further configured to read the program in the memory 920, and perform the following steps:
and acquiring the DMRS symbol offset notified by the base station through a Radio Resource Control (RRC) message or Downlink Control Information (DCI).
Optionally, the processor 900 is further configured to read the program in the memory 920, and perform the following steps:
taking N symbols starting from the second DMRS start symbol as the DMRS symbols;
and N is the number of the DMRS symbols and is a positive integer.
Optionally, the processor 900 is further configured to read the program in the memory 920, and perform the following steps:
determining a target symbol occupied by an additional DMRS according to the DMRS symbol;
and when the time domain position corresponding to the target symbol exceeds the time domain position corresponding to the target data channel, determining that the additional DMRS does not exist.
Optionally, the first DMRS starting symbol is a preset symbol in a timeslot agreed by a protocol;
alternatively, the first DMRS start symbol refers to the ith relative to the reference symbol/0A symbol;
wherein l and l0Are all natural numbers.
In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
determining a first demodulation reference signal (DMRS) starting symbol;
determining a second DMRS starting symbol according to DMRS symbol offset notified by a base station, wherein the DMRS symbol offset refers to the number of symbols of the second DMRS starting symbol offset relative to the first DMRS starting symbol offset;
and determining the DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol.
When executed by the processor, the program can implement all the implementation manners in the above-described embodiment of the transmission method applied to the terminal side, and details are not described here again to avoid repetition.
As shown in fig. 10, an embodiment of the present invention further provides a terminal 1000, including:
a first determining module 1001, configured to determine a first demodulation reference signal DMRS starting symbol;
a second determining module 1002, configured to determine, according to a DMRS symbol offset notified by a base station, a second DMRS starting symbol, where the DMRS symbol offset is a number of symbols of the second DMRS starting symbol offset relative to the first DMRS starting symbol;
A third determining module 1003, configured to determine, according to the number of DMRS symbols notified by the base station and the second DMRS starting symbol, a DMRS symbol occupied by a DMRS.
The terminal of the embodiment of the invention further comprises:
and the acquisition module is used for acquiring the DMRS symbol offset notified by the base station through the Radio Resource Control (RRC) message or the Downlink Control Information (DCI).
In the terminal of the embodiment of the present invention, the third determining module is configured to use N symbols starting from the second DMRS starting symbol as the DMRS symbols;
and N is the number of the DMRS symbols and is a positive integer.
The terminal of the embodiment of the invention further comprises:
a fourth determining module, configured to determine, according to the DMRS symbol, a target symbol occupied by an additional DMRS;
and a fifth determining module, configured to determine that the additional DMRS does not exist when the time domain position corresponding to the target symbol exceeds the time domain position corresponding to the target data channel.
In the terminal of the embodiment of the invention, the first DMRS starting symbol is a preset symbol in a time slot appointed by a protocol;
or, the first DMRS startsThe starting symbol refers to the l-th symbol relative to the reference symbol l0A symbol;
wherein l and l0Are all natural numbers.
The terminal of the embodiment of the invention determines a first demodulation reference signal (DMRS) initial symbol; determining a second DMRS starting symbol according to the DMRS symbol offset notified by the base station; and determining the DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol. In the embodiment of the invention, the network side informs the terminal of the DMRS symbol offset, so that different UE can be configured with different symbol offsets to realize different DMRS symbol positions of different UE, and the DMRS symbol positions are used for supporting the non-orthogonal multiplexing of pilot frequency and data, thereby saving the pilot frequency overhead and reserving more resources for data transmission.
As shown in fig. 11, the embodiment of the present invention further provides a base station, which includes a memory 1120, a processor 1100, a transceiver 1110, a bus interface, and a computer program stored on the memory 1120 and operable on the processor 1100, wherein the processor 1100 is configured to read the program in the memory 1120 and execute the following processes:
notifying the terminal of the configured DMRS symbol offset;
the DMRS symbol offset refers to the number of symbols of the second DMRS start symbol offset with respect to the first DMRS start symbol.
Where in fig. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1100, and various circuits, represented by memory 1120, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1110 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1100 in performing operations.
Optionally, the processor 1100 may further implement the following steps when executing the computer program:
and informing the terminal of the number of the DMRS symbols.
Optionally, the processor 1100 may further implement the following steps when executing the computer program:
and notifying the configured DMRS symbol offset to the terminal through a Radio Resource Control (RRC) message or Downlink Control Information (DCI).
Optionally, the first DMRS starting symbol is a preset symbol in a timeslot agreed by a protocol;
alternatively, the first DMRS start symbol refers to the ith relative to the reference symbol/0A symbol;
wherein l and l0Are all natural numbers.
In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
notifying the terminal of the configured DMRS symbol offset;
the DMRS symbol offset refers to the number of symbols of the second DMRS start symbol offset with respect to the first DMRS start symbol.
When executed by the processor, the program can implement all the implementation manners in the method embodiment applied to the base side, and is not described herein again to avoid repetition.
As shown in fig. 12, an embodiment of the present invention further provides a base station 1200, including:
A first sending module 1201, configured to notify the terminal of the configured DMRS symbol offset of the demodulation reference signal;
the DMRS symbol offset is the number of symbols in which the second DMRS starting symbol is offset with respect to the first DMRS starting symbol.
The base station of the embodiment of the invention also comprises:
and the second sending module is used for informing the terminal of the number of the DMRS symbols.
In the base station of the embodiment of the present invention, the first sending module is configured to notify the terminal of the configured DMRS symbol offset through a radio resource control RRC message or a downlink control information DCI.
In the base station of the embodiment of the invention, the first DMRS starting symbol is a preset symbol in a time slot appointed by a protocol;
alternatively, the first DMRS start symbol refers to the ith relative to the reference symbol/0A symbol;
wherein l and l0Are all natural numbers.
The base station of the embodiment of the invention can configure different DMRS symbol offsets for different UEs, thereby realizing different pilot frequency initial symbol positions of different UEs on the same time-frequency resource, and increasing the number of supported antenna ports on the premise of not increasing the number of DMRS symbols.
In various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (15)

1. A method for determining a pilot frequency position is applied to a terminal, and is characterized in that the method comprises the following steps:
determining a first demodulation reference signal (DMRS) starting symbol;
determining a second DMRS starting symbol according to DMRS symbol offset notified by a base station, wherein the DMRS symbol offset refers to the number of symbols of the second DMRS starting symbol offset relative to the first DMRS starting symbol offset;
determining DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol;
after the step of determining the DMRS symbols occupied by the DMRS according to the number of DMRS symbols notified by the base station and the second DMRS start symbol, the method further includes:
determining a target symbol occupied by an additional DMRS according to the DMRS symbol;
determining that the additional DMRS does not exist when the time domain position corresponding to the target symbol exceeds the time domain position corresponding to the target data channel;
Before the step of determining the second DMRS starting symbol according to the DMRS symbol offset notified by the base station, the method further includes:
and acquiring the DMRS symbol offset notified by the base station through a Radio Resource Control (RRC) message or Downlink Control Information (DCI).
2. The method for determining the pilot location according to claim 1, wherein the step of determining the DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol comprises:
taking N symbols starting from the second DMRS start symbol as the DMRS symbols;
and N is the number of the DMRS symbols and is a positive integer.
3. The method of determining the pilot location according to claim 1, wherein the first DMRS start symbol is a preset symbol in a slot agreed by a protocol;
alternatively, the first DMRS start symbol refers to the ith relative to the reference symbol/0A symbol;
wherein l and l0Are all natural numbers.
4. A method for determining a pilot frequency position is applied to a base station, and is characterized by comprising the following steps:
notifying the terminal of the configured DMRS symbol offset;
the DMRS symbol offset refers to the number of symbols of a second DMRS start symbol offset relative to a first DMRS start symbol, and the DMRS symbol offset is used for the terminal to determine the second DMRS start symbol;
The method further comprises the following steps:
informing the terminal of the number of DMRS symbols;
the number of the DMRS symbols and the second DMRS starting symbol are used for enabling the terminal to determine the DMRS symbols occupied by the DMRS;
the DMRS symbols are used for enabling the terminal to determine target symbols occupied by additional DMRS;
determining that the additional DMRS does not exist when the time domain position corresponding to the target symbol exceeds the time domain position corresponding to the target data channel;
the step of notifying the configured DMRS symbol offset to the terminal includes:
and notifying the configured DMRS symbol offset to the terminal through a Radio Resource Control (RRC) message or Downlink Control Information (DCI).
5. The method of determining the pilot location according to claim 4, wherein the first DMRS start symbol is a preset symbol in a protocol-agreed slot;
alternatively, the first DMRS start symbol refers to the ith relative to the reference symbol/0A symbol;
wherein l and l0Are all natural numbers.
6. A terminal, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program implements the steps of:
Determining a first demodulation reference signal (DMRS) starting symbol;
determining a second DMRS starting symbol according to DMRS symbol offset notified by a base station, wherein the DMRS symbol offset refers to the number of symbols of the second DMRS starting symbol relative to the offset of the first DMRS starting symbol;
determining DMRS symbols occupied by the DMRS according to the number of the DMRS symbols notified by the base station and the second DMRS starting symbol;
the processor when executing the computer program may further realize the steps of:
determining a target symbol occupied by an additional DMRS according to the DMRS symbol;
determining that the additional DMRS does not exist when the time domain position corresponding to the target symbol exceeds the time domain position corresponding to the target data channel;
the processor, when executing the computer program, may further perform the steps of:
and acquiring the DMRS symbol offset notified by the base station through a Radio Resource Control (RRC) message or Downlink Control Information (DCI).
7. The terminal of claim 6, wherein the processor, when executing the computer program, further performs the steps of:
taking N symbols starting from the second DMRS start symbol as the DMRS symbols;
and N is the number of the DMRS symbols and is a positive integer.
8. The terminal of claim 6, wherein the first DMRS starting symbol is a preset symbol in a protocol-agreed slot;
alternatively, the first DMRS start symbol refers to the ith relative to the reference symbol/0A symbol;
wherein l and l0Are all natural numbers.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for determining the pilot position according to any one of claims 1 to 3.
10. A base station, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program implements the steps of:
notifying the configured DMRS symbol offset to a terminal through a transceiver;
the DMRS symbol offset refers to the number of symbols of a second DMRS starting symbol offset relative to a first DMRS starting symbol, and the DMRS symbol offset is used for the terminal to determine the second DMRS starting symbol;
the processor, when executing the computer program, may further perform the steps of:
Informing the terminal of the number of the DMRS symbols;
the number of the DMRS symbols and the second DMRS starting symbol are used for enabling the terminal to determine the DMRS symbols occupied by the DMRS;
the DMRS symbols are used for enabling the terminal to determine target symbols occupied by the additional DMRS;
determining that the additional DMRS does not exist when the time domain position corresponding to the target symbol exceeds the time domain position corresponding to the target data channel;
the processor, when executing the computer program, may further perform the steps of:
and notifying the configured DMRS symbol offset to the terminal through a Radio Resource Control (RRC) message or Downlink Control Information (DCI).
11. The base station of claim 10, wherein the first DMRS starting symbol is a preset symbol in a slot agreed by a protocol;
alternatively, the first DMRS start symbol refers to the ith relative to the reference symbol/0A symbol;
wherein l and l0Are all natural numbers.
12. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for determining the pilot positions according to any one of claims 4 to 5.
13. A terminal, comprising:
A first determining module, configured to determine a first demodulation reference signal DMRS starting symbol;
a second determining module, configured to determine a second DMRS starting symbol according to a DMRS symbol offset notified by a base station, where the DMRS symbol offset is a number of symbols of the second DMRS starting symbol offset relative to the first DMRS starting symbol;
a third determining module, configured to determine DMRS symbols occupied by the DMRS according to the number of DMRS symbols notified by the base station and the second DMRS starting symbol;
the terminal further comprises:
a fourth determining module, configured to determine, according to the DMRS symbol, a target symbol occupied by an additional DMRS;
a fifth determining module, configured to determine that an additional DMRS does not exist when the time domain position corresponding to the target symbol exceeds the time domain position corresponding to the target data channel;
the terminal further comprises:
and the acquisition module is used for acquiring the DMRS symbol offset notified by the base station through the Radio Resource Control (RRC) message or the Downlink Control Information (DCI).
14. The terminal of claim 13, wherein the third determining module is configured to treat N symbols starting from the second DMRS start symbol as the DMRS symbol;
and N is the number of the DMRS symbols and is a positive integer.
15. A base station, comprising:
the first sending module is used for informing the terminal of the configured DMRS symbol offset;
the DMRS symbol offset refers to the number of symbols of a second DMRS start symbol offset relative to a first DMRS start symbol, and the DMRS symbol offset is used for the terminal to determine the second DMRS start symbol;
the base station further comprises:
the second sending module is used for notifying the terminal of the number of the DMRS symbols;
the number of the DMRS symbols and the second DMRS starting symbol are used for enabling the terminal to determine the DMRS symbols occupied by the DMRS;
the DMRS symbols are used for enabling the terminal to determine target symbols occupied by the additional DMRS;
determining that the additional DMRS does not exist when the time domain position corresponding to the target symbol exceeds the time domain position corresponding to the target data channel;
and the first sending module is used for notifying the configured DMRS symbol offset to the terminal through a Radio Resource Control (RRC) message or Downlink Control Information (DCI).
CN201810288559.7A 2018-04-03 2018-04-03 Method for determining pilot frequency position, terminal and base station Active CN110351035B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810288559.7A CN110351035B (en) 2018-04-03 2018-04-03 Method for determining pilot frequency position, terminal and base station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810288559.7A CN110351035B (en) 2018-04-03 2018-04-03 Method for determining pilot frequency position, terminal and base station

Publications (2)

Publication Number Publication Date
CN110351035A CN110351035A (en) 2019-10-18
CN110351035B true CN110351035B (en) 2022-06-28

Family

ID=68173745

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810288559.7A Active CN110351035B (en) 2018-04-03 2018-04-03 Method for determining pilot frequency position, terminal and base station

Country Status (1)

Country Link
CN (1) CN110351035B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11792810B2 (en) * 2020-01-31 2023-10-17 Qualcomm Incorporated Determination of physical downlink control channel receive time based on physical downlink shared channel reference symbol
WO2022077514A1 (en) * 2020-10-16 2022-04-21 华为技术有限公司 Communication method and apparatus
US20240333455A1 (en) * 2021-07-08 2024-10-03 Beijing Xiaomi Mobile Software Co., Ltd. Method and apparatus for configuring time domain position of reference signal, user equipment, base station, and storage medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102036360A (en) * 2009-09-29 2011-04-27 中兴通讯股份有限公司 Method and device for compensating frequency deviation of data signal
CN103095637A (en) * 2012-12-18 2013-05-08 李文龙 Demodulation reference signal transmission method and system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101677305B (en) * 2008-09-19 2013-02-13 电信科学技术研究院 Configuration method for downlink public pilot frequency
CN102076076B (en) * 2009-11-20 2015-11-25 夏普株式会社 A kind of resource allocation informing method of demodulated reference signal
US10171278B2 (en) * 2016-05-12 2019-01-01 Cavium, Llc Methods and apparatus for frequency offset estimation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102036360A (en) * 2009-09-29 2011-04-27 中兴通讯股份有限公司 Method and device for compensating frequency deviation of data signal
CN103095637A (en) * 2012-12-18 2013-05-08 李文龙 Demodulation reference signal transmission method and system

Also Published As

Publication number Publication date
CN110351035A (en) 2019-10-18

Similar Documents

Publication Publication Date Title
CN112152769B (en) Configuration method for controlling resource set, network equipment and terminal
CN111726877B (en) Data transmission method, terminal and base station
US11601958B2 (en) Data transmission method and apparatus
JP2018536360A (en) Wireless communication method and apparatus
US11647505B2 (en) Uplink signal transmission method and device
TWI688234B (en) Information transmission method, terminal and base station
CN110324898B (en) Physical downlink shared channel receiving and time domain resource indicating method, device, storage medium, base station and terminal
US10165517B2 (en) Power allocation method and communications device
EP3661298B1 (en) Wireless communication method and apparatus
WO2018227636A1 (en) Service transmission method, device and system
WO2022127900A1 (en) Resource configuration method and apparatus, network node, and storage medium
EP3506694B1 (en) Signal transmission method, terminal device, and network device
EP3534551A1 (en) Method and apparatus for transmitting uplink signal
US20210084676A1 (en) Scheduling information transmission method and apparatus
CN110351035B (en) Method for determining pilot frequency position, terminal and base station
AU2016432636B2 (en) Information transmission method, network apparatus, and terminal apparatus
WO2017215642A1 (en) Resource allocation method, network apparatus, and terminal apparatus
CN110099446B (en) Uplink transmission method and device, communication system and computer storage medium
US11996959B2 (en) SRS transmission method, access network device, and terminal device
US20190222390A1 (en) Method and Network Device For Transmitting Sounding Reference Signal, and Terminal Device
CN110890953B (en) Communication method and communication device using unlicensed frequency band
CN113301649A (en) Transmission method, device, equipment and computer readable storage medium
WO2023050402A1 (en) Method and apparatus for beam determination
CN115189845B (en) PUCCH resource allocation method, device and equipment
CN115134048B (en) Uplink transmission method and device, terminal and readable storage medium

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
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20210608

Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing

Applicant after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd.

Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road

Applicant before: Telecommunications Science and Technology Research Institute Co.,Ltd.

GR01 Patent grant
GR01 Patent grant