CN109474407A - Processing method, terminal and the network side equipment of physical downlink control channel - Google Patents
Processing method, terminal and the network side equipment of physical downlink control channel Download PDFInfo
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- CN109474407A CN109474407A CN201710807976.3A CN201710807976A CN109474407A CN 109474407 A CN109474407 A CN 109474407A CN 201710807976 A CN201710807976 A CN 201710807976A CN 109474407 A CN109474407 A CN 109474407A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
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Abstract
The embodiment of the present invention provides the processing method, terminal and network side equipment of a kind of physical downlink control channel, which comprises obtains the DMRS RE frequency domain mapping mode in PDCCH；Corresponding OCC or FDM are determined according to CORESET duartion；And the DMRS in the PDCCH is parsed using the DMRS RE frequency domain mapping mode and the OCC or FDM.In this way, orthogonal covering codes or time domain orthogonal overlay code or frequency division multiplexing FDM using frequency domain across REG, allow PDCCH that multi-antenna port is supported to transmit, improve the power system capacity of PDCCH, and by configuring DMRS frequency deviation, so that the frequency domain position of difference DMRS is different, PDCCH DMRS interference randomization can be carried out.
Description
Technical field
The present embodiments relate to fields of communication technology, and in particular to a kind of physical downlink control channel
Processing method, terminal and the network side equipment of (Physical Downlink Control Channel, PDCCH).
Background technique
PDCCH uses cell reference signals (Cell in long term evolution (Long Term Evolution, LTE)
Reference Signal, CRS) carry out channel estimation and coherent demodulation.CRS is using different frequency shift (FS)s to avoid adjacent small
Interference between the reference signal of section.
PDCCH uses demodulated reference signal (Demodulation Reference in new wireless (New Radio, NR)
Signal, DRMS) carry out channel estimation and coherent demodulation.Due to resource unit group (Resource each in NR PDCCH
Element Group, REG) in DMRS be mapped on 3 resource units (Resource Element, RE), in each REG
It is difficult to support multi-user's multiple-input and multiple-output (Multi-User of code division multiplexing (CDM) or frequency division multiplexing (FDM) mode
Multiple-Input Multiple-Output, MU-MIMO).
Since single antenna port is designed, the capacity of PDCCH is limited, in order to further increase the capacity of PDCCH, it is necessary to
Consider to support multiport PDCCH DMRS design.
Summary of the invention
One of the embodiment of the present invention is designed to provide a kind of processing method of physical downlink control channel, terminal
And network side equipment, solve the problems, such as that PDCCH does not support multi-antenna port to transmit.
In a first aspect, providing a kind of processing method of physical downlink control channel, it is applied to terminal, the method
Include:
Obtain the demodulated reference signal resource unit DMRS RE frequency domain mapping in physical downlink control channel PDCCH
Mode；
Corresponding orthogonal covering codes OCC is determined according to control resource set CORESET duration duartion, or corresponding
Frequency division multiplexing FDM；And
Using the DMRS RE frequency domain mapping mode and the OCC or the FDM to the DMRS in the PDCCH into
Row parsing.
Second aspect additionally provides a kind of processing method of physical downlink control channel, is applied to network side equipment,
The described method includes:
The DMRS RE frequency domain mapping mode in terminal PDCCH is notified, so that the terminal uses the DMRS RE frequency domain
Mapping mode and using according to CORESET duartion determine OCC or frequency division multiplexing FDM to the DMRS in the PDCCH
It is parsed.
The third aspect additionally provides a kind of terminal, comprising:
Module is obtained, for obtaining the demodulated reference signal resource unit in physical downlink control channel PDCCH
DMRS RE frequency domain mapping mode；
Determining module, for determining corresponding orthogonal covering according to control resource set CORESET duration duartion
Code OCC or FDM；And
Parsing module, for using the DMRS RE frequency domain mapping mode and the OCC or FDM to described
DMRS in PDCCH is parsed.
Fourth aspect additionally provides a kind of network side equipment, comprising:
Sending module, for notifying the DMRS RE frequency domain mapping mode in terminal PDCCH, so that the terminal uses institute
State DMRS RE frequency domain mapping mode and according to the CORESET duartion OCC determined or frequency division multiplexing FDM to described
DMRS in PDCCH is parsed.
5th aspect, additionally provides a kind of terminal, comprising: processor, memory and is stored on the memory and can
The processing routine of the physical downlink control channel run on the processor, the physical downlink control channel
The processing method of physical downlink control channel as described in relation to the first aspect is realized when processing routine is executed by the processor
The step of.
6th aspect, additionally provides a kind of network side equipment, comprising: processor, memory and be stored in the memory
The processing routine of physical downlink control channel that is upper and can running on the processor, the physical down link control
The place of the physical downlink control channel as described in second aspect is realized when the processing routine of channel is executed by the processor
The step of method of reason.
7th aspect, additionally provides a kind of computer readable storage medium, stores on the computer readable storage medium
There is the processing routine of physical downlink control channel, the processing routine of the physical downlink control channel is held by processor
The step of method of the processing of the physical downlink control channel as described in first aspect or second aspect is realized when row.
In this way, the orthogonal covering codes or time domain orthogonal overlay code using frequency domain across REG or the FDM mode across REG, so that
PDCCH can support multi-antenna port to transmit, and the power system capacity of PDCCH be improved, and by configuring DMRS frequency deviation, so that different
The frequency domain position of DMRS is different, can carry out PDCCH DMRS interference randomization.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the schematic diagram of three kinds of CRS frequency shift (FS)s in LTE；
Fig. 2 is structure (4 antenna ports) schematic diagram of CRS under LTE multi-antenna transmission；
The structure of DMRS, includes the case where two reference signals that OCC is divided to out when Fig. 3 is LTE1 or 2 reference signals
Schematic diagram；
Fig. 4 is the schematic diagram of the mapping mode of NR-PDCCH DMRS RE；
Fig. 5 is the configuration diagram of the wireless communication system of the embodiment of the present invention；
Fig. 6 is the hardware schematic of the network side equipment of the embodiment of the present invention；
Fig. 7 is the hardware schematic of the terminal of the embodiment of the present invention；
Fig. 8 is one of the flow chart of processing method of physical downlink control channel of the embodiment of the present invention；
Fig. 9 is the schematic diagram of the DMRS frequency deviation of the embodiment of the present invention；
Figure 10~Figure 15 is the schematic diagram using OCC or FDM of the embodiment of the present invention；
Figure 16 is the two of the flow chart of the processing method of the physical downlink control channel of the embodiment of the present invention；
Figure 17 is the module diagram of the terminal of the embodiment of the present invention；
Figure 18 is the module diagram of the network side equipment of the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.Term " first ", " second " in the description and claims of this application etc. are
It is used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that the data used in this way
It is interchangeable under appropriate circumstances, so as to embodiments herein described herein, such as in addition to illustrating or describing herein
Sequence other than those is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that covering is not arranged
His includes, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to clearly
Those of list step or unit, but may include be not clearly listed or for these process, methods, product or equipment
Intrinsic other step or units.In addition, indicating institute's connecting object at least using "and/or" in specification and claim
One of them, such as A and/or B, indicate to include independent A, independent B and A and B have three kinds of situations.
The demodulation of PDCCH and PDSCH is described below.
(1) LTE PDCCH is demodulated
Fig. 1 is the schematic diagram of three kinds of CRS frequency shift (FS)s in LTE.PDCCH is carried out using cell specific reference signal in LTE
Channel estimation and coherent demodulation.CRS is transmitted on each resource block of each downlink subframe and frequency domain, can be used for the letter of terminal
Estimate to realize the correlation demodulation to all downlink transfers in road；It can also be used to obtain channel state information (channel by terminal
state information,CSI).504 different CRS sequences are defined in LTE, each sequence corresponds to different physical layers
Cell ID.There is frequency shift (FS) different in 6 in the position of CRS.Frequency deviation used in one cell depends on the physics of the cell
Layer cell identifiers, so that each offset corresponds to 504/6=84 different cells.By for different community suitably allotment
Layer cell identifiers are managed, different reference signal frequency deviations can be used in neighboring community.Function can be emitted increasing reference signal in this way
Reference signal signal-to-noise ratio (Signal to Interference Ratio, SIR) is improved when rate, is avoided because of neighboring community
Reference signal power is equally promoted without that can bring performance gain.
In one cell, there can be 1,2 or 4 CRS, be defined as 1,2 or 4 CRS antenna port (antenna
port).It is distinguished between different antenna ports by different time-frequency domain resources offsets.It is 4 in LTE such as shown in Fig. 2
The reference signal structure schematic diagram of each antenna port when a antenna port.
(2) LTE Physical Downlink Shared Channel (physical downlink sharing channel, PDSCH) demodulates
The channel estimation of particular terminal is specific to relative to CRS, DMRS, and only in the resource for distributing to the terminal
It is transmitted on block.The DMRS of single layer is only supported to transmit (i.e. only one antenna port) in LTE version 8 (Release 8, R8), version
It is expanded to two layers in this 9 (Release 9, R9), expands to again in version 10 (Release 10, R10) while supporting 8 antennas
Port.Between different antenna ports by different frequency domain resource offsets and/or same asset using it is mutually orthogonal just
Overlay code (OCC) is handed over to separate.Such as Fig. 3 is the time domain or frequency-domain structure of the DMRS in the case of one or two reference signal of LTE.
(3) NR PDCCH is demodulated
In view of the expense of CRS is larger and its effect can replace (letter with other reference signals in the design of NR system
The effect of road estimation can be replaced with DRMS, and channel status estimation can be by channel state information reference symbol (CSI-RS) generation
For), so not being re-introduced into CRS in NR, therefore PDCCH introduces DMRS to be used to carry out channel estimation and coherent demodulation.
NR supports that control resource set (Control Resource Set, CORESET) duration (duration) can be with
It is 1,2 or 3 orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol,
Every 2 or 6 REG form a REG beam (REG bundle), carry out PDCCH resource distribution by minimum unit of REG bundle.
One of REG is defined as one PRB (Physical Resource Block) of frequency domain × OFDM symbol of time domain one, i.e. 1PRB × 1OFDM.
The number of resources for being used as DMRS RE in NR PDCCH in each REG of each symbol is identical, each of each symbol
REG has 3 RE as DMRS resource.It is the possible mapping mode of NR-PDCCH DMRS RE in each REG as shown in Figure 4,
Four kinds of modes (pattern) are shown in figure.
In order to solve the problems, such as that multi-antenna port is not supported in DMRS transmission in the prior art, the embodiment of the invention provides one
Processing method, terminal and the network side equipment of kind physical downlink control channel.
In embodiments of the present invention, " illustrative " or " such as " etc. words for indicate make example, illustration or explanation.This
Be described as in inventive embodiments " illustrative " or " such as " any embodiment or design scheme be not necessarily to be construed as comparing
Other embodiments or design scheme more preferably or more advantage.Specifically, use " illustrative " or " such as " etc. words purport
Related notion is being presented in specific ways.
Processing method, terminal and the network side equipment of physical downlink control channel provided in an embodiment of the present invention can be with
Applied in wireless communication system.The wireless communication system can be mobile logical using the 5th generation (5th Generation, 5G)
The system (being referred to as 5G system below) of letter technology is a kind of wireless communication system provided in an embodiment of the present invention with reference to Fig. 5
Configuration diagram.As shown in figure 5, the wireless communication system may include the network equipment 50 and UE51, UE 51 can be with network
Equipment 50 communicates.The connection between above-mentioned each equipment can be to be wirelessly connected, in order to facilitate intuitive earth's surface in practical applications
Show the connection relationship between each equipment, is illustrated in Fig. 5 using solid line.
It should be noted that above-mentioned communication system may include multiple UE, the network equipment and (can be passed with multiple UE communications
Defeated signaling or transmission data).
Network side equipment provided in an embodiment of the present invention can be base station, which can be conventionally used base
It stands, or evolved base station (evolved node base station, eNB) can also set for the network in 5G system
Standby (such as next-generation base station (next generation node base station, gNB) or send and receive a little
(transmission and reception point, TRP)) etc. equipment.Illustratively, the embodiment of the present invention is with conventionally used
Base station for, introduce the hardware configuration of the network equipment.Network side provided in an embodiment of the present invention is specifically introduced below with reference to Fig. 6
Each component parts of equipment.
The embodiment of the present invention provides a kind of network side equipment, and Fig. 6 shows that network side provided in an embodiment of the present invention is set
Standby 600 structural schematic diagram.As shown in fig. 6, network side equipment 600 include: processor 601, transceiver 602, memory 603,
User interface 604 and bus interface.
Wherein, processor 601 can be responsible for managing bus architecture and common processing.Memory 603 can store processing
The used data when executing operation of device 601.
In the embodiment of the present invention, network side equipment 600 can also include: to be stored on memory 603 and can be in processor
The computer program run on 601.Following steps are realized when computer program is by processor 601, execution: notice terminal PDCCH
In DMRS RE frequency domain mapping mode so that the terminal using the DMRS RE frequency domain mapping mode and use basis
The OCC or frequency division multiplexing FDM that CORESET duartion is determined parse the DMRS in the PDCCH.
Bus architecture may include the bus and bridge of any number of interconnection in the figure, specifically be represented by processor 601
The various circuits for the memory that one or more processors and memory 603 represent link together.Bus architecture can also incite somebody to action
Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like link together, these are all abilities
Well known to domain, therefore, the embodiment of the present invention is no longer described further it.Bus interface provides interface.Transceiver 602
It can be multiple element, that is, include transmitter and receiver, provide for over a transmission medium being communicated with various other devices
Unit.For different UE, user interface 604, which can also be, external the interface for needing equipment, the equipment packet of connection is inscribed
Include but be not limited to keypad, display, loudspeaker, microphone, control stick etc..
Terminal (such as UE) provided in an embodiment of the present invention can be mobile phone, tablet computer, laptop, super movement
Personal computer (ultra-mobile personal computer, UMPC), net book or personal digital assistant
(personal digital assistant, PDA) etc..
As shown in fig. 7, terminal 700 shown in Fig. 7 includes: at least one processor 701, memory 702, at least one net
Network interface 704 and user interface 703.Various components in terminal 700 are coupled by bus system 705.It is understood that total
Linear system system 705 is for realizing the connection communication between these components.Bus system 705 except include data/address bus in addition to, further include
Power bus, control bus and status signal bus in addition.But for the sake of clear explanation, various buses are all designated as in Fig. 7
Bus system 705.
Wherein, user interface 703 may include display, keyboard or pointing device (for example, mouse, trace ball
(trackball), touch-sensitive plate or touch screen etc..
It is appreciated that the memory 702 in the embodiment of the present invention can be volatile memory or nonvolatile memory,
It or may include both volatile and non-volatile memories.Wherein, nonvolatile memory can be read-only memory (Read-
Only Memory, ROM), programmable read only memory (Programmable ROM, PROM), the read-only storage of erasable programmable
Device (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or
Flash memory.Volatile memory can be random access memory (Random Access Memory, RAM), be used as external high
Speed caching.By exemplary but be not restricted explanation, the RAM of many forms is available, such as static random access memory
(Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory
(Synchronous DRAM, SDRAM), double data speed synchronous dynamic RAM (Double Data Rate
SDRAM, DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronized links
Dynamic random access memory (Synchlink DRAM, SLDRAM) and direct rambus random access memory (Direct
Rambus RAM, DRRAM).The memory 802 of the system and method for description of the embodiment of the present invention is intended to include but is not limited to these
With the memory of any other suitable type.
In some embodiments, memory 702 saves following element, executable modules or data structures, or
Their subset of person or their superset: operating system 7021 and application program 7022.
Wherein, operating system 7021 include various system programs, such as ccf layer, core library layer, driving layer etc., are used for
Realize various basic businesses and the hardware based task of processing.Application program 7022 includes various application programs, such as media
Player (Media Player), browser (Browser) etc., for realizing various applied business.Realize the embodiment of the present invention
The program of method may be embodied in application program 7022.
In embodiments of the present invention, by the program or instruction of calling memory 702 to save, specifically, can be application
The program or instruction saved in program 7022, when execution, which performs the steps of, to be obtained in physical downlink control channel PDCCH
Demodulated reference signal resource unit DMRS RE frequency domain mapping mode；According to the control resource set CORESET duration
Duartion determines corresponding orthogonal covering codes OCC or corresponding frequency division multiplexing FDM；And use the DMRS RE frequency domain
Mapping mode and the OCC or the FDM parse the DMRS in the PDCCH.
The method that the embodiments of the present invention disclose can be applied in processor 701, or be realized by processor 701.
Processor 701 may be a kind of IC chip, the processing capacity with signal.During realization, the above method it is each
Step can be completed by the integrated logic circuit of the hardware in processor 701 or the instruction of software form.Above-mentioned processing
Device 701 can be general processor, digital signal processor (Digital Signal Processor, DSP), dedicated integrated electricity
Road (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components.It may be implemented or execute disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general
Processor can be microprocessor or the processor is also possible to any conventional processor etc..In conjunction with institute of the embodiment of the present invention
The step of disclosed method, can be embodied directly in hardware decoding processor and execute completion, or with the hardware in decoding processor
And software module combination executes completion.Software module can be located at random access memory, and flash memory, read-only memory may be programmed read-only
In the preservation medium of this fields such as memory or electrically erasable programmable memory, register maturation.The preservation medium is located at
The step of memory 702, processor 701 reads the information in memory 702, completes the above method in conjunction with its hardware.
Optionally, following steps be can also be achieved when computer program is executed by processor 701: explicit or implicit by signaling
It indicates to obtain the DMRS RE frequency domain mapping mode in PDCCH；Alternatively, directly or indirectly obtaining PDCCH by other configurations parameter
In DMRS RE frequency domain mapping mode.
Optionally, following steps be can also be achieved when computer program is executed by processor 701: as CORESET duration
When equal to 1 orthogonal frequency division multiplex OFDM symbol, the frequency domain OCC or corresponding frequency division multiplexing using length for preset value are determined
FDM.Optionally, the length is the frequency domain OCC of preset value are as follows: 2 companies in one resource unit group REG of covering or between REG
The OCC that continuous DMRS RE length is 2；Alternatively, continuous 6 DMRS RE long in continuous 2 REG in one REG beam bundle of covering
The OCC that degree is 6；Alternatively, the OCC that 3 DRMS RE length of covering are 3 in a REG.
Optionally, following steps be can also be achieved when computer program is executed by processor 701: as CORESET duration
Equal to 2 or when 3 OFDM symbols, the time domain OCC for being equal to CORESET duration using length is determined.
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached in the embodiment of the present invention
Figure, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Referring to Fig. 8, a kind of process of the processing method of physical downlink control channel is illustrated in figure, this method is held
Row main body is terminal, the specific steps are as follows:
DMRS RE frequency domain mapping mode in step 801, acquisition PDCCH；
Mode one explicitly or implicitly indicates to obtain the DMRS RE frequency domain mapping mode in PDCCH, terminal root by signaling
According to the signaling show or implicit instruction derive PDCCH in DMRS RE frequency domain mapping mode, it should be noted that in the present invention
The signaling is not limited in embodiment to show or the concrete form of implicit instruction.
Mode two directly or indirectly obtains DMRS RE frequency domain mapping mode in PDCCH by other configurations parameter.
It should be noted that when in addition to being initially accessed RMSI CORESET, other CORESET are not configurations, therefore not
Should depend on certain semi-static parameters, such as Cell ID (cell ID), can be through CORESET configuration directly or
It meets (such as the QCL or VCID etc. for passing through CORESET configuration) and determines DMRS RE frequency domain mapping mode.
The CORESET of the RMSI of initial access may rely on the explicit or implicit information inside SSB.
In embodiments of the present invention, optionally, DMRS RE frequency domain mapping mode can be configured as: different cells are adopted
With different DMRS RE frequency domain mapping modes；Alternatively, different COSETSET uses different DMRS RE frequency domain mapping modes；
Alternatively, different beams use different DMRS RE frequency domain mapping modes；Alternatively, distinct symbols use different DMRS RE frequency domains
Mapping mode；Alternatively, different bandwidth part (BWP) uses different DMRS RE frequency domain mapping modes.
Referring to Fig. 8, four kinds of situations of DMRS frequency shift (FS) (shift) are shown in figure.
Step 802 determines corresponding OCC or FDM according to CORESET duartion；
When CORESET duration is equal to 1 OFDM symbol, the frequency domain OCC using length for preset value is determined.It can
Selection of land, the length are the OCC frequency domain of preset value are as follows: 2 continuous DMRS RE long in a resource unit group REG or between REG
The OCC that degree is 2；Alternatively, continuous 6 DMRS RE length is 6 in continuous 2 REG in a REG beam (REG bundle)
OCC；Alternatively, the OCC that continuous 3 DRMS RE length is 3 in a REG.
When CORESET duration is equal to 2 or 3 OFDM symbols, determines and be equal to CORESET using time domain length
The OCC of duration.
Step 803 carries out the demodulation of the DMRS in the PDCCH using DMRS RE frequency domain mapping mode and OCC or FDM.
In this way, in embodiments of the present invention, orthogonal covering codes or time domain orthogonal overlay code or FDM using frequency domain across REG
Mode allows PDCCH that multi-antenna port is supported to transmit, and improves the power system capacity of PDCCH, and by configuring DMRS frequency
Partially, so that the frequency domain position of difference DMRS is different, PDCCH DMRS interference randomization can be carried out.
Example 1:
CORESET duration=1OFDM symbol, the OCC for the use of frequency domain length being 2.As 1REG bundle=
When 2REG, as shown in Figure 10, there are 6 RE mapping DMRS in a REG bundle.It is used in two adjacent DMRS RE
The OCC that length is 2 is to support the mutually orthogonal DMRS of mutiple antennas port to transmit.Due to having 3 DMRS RE in a REG,
When using OCC in pairs, the DMRS RE that DMRS RE and adjacent R EG is had in a REG forms one group of covering
OCC.As 1REG bundle=6REG, situation is similar.
Example 2:
CORESET duration=1OFDM symbol, the OCC for the use of frequency domain length being 6.As 1REG bundle=
When 2REG, as shown in fig. 11a, 2 REG form a REG bundle, there is 6 RE mappings in a REG bundle
DMRS.Using the OCC that length is 6 to support the mutually orthogonal DMRS of mutiple antennas port to pass in a REG bundle
It is defeated.
It should be noted that the frequency domain OCC that length is 6 uses { 11 1-1-1-1 }, it is of course possible to manage in Figure 11 a
The frequency domain OCC that the length of other forms is 6 can be used in solution, such as using { 1-11-1 1-1 }, referring to Figure 11 b.
CORESET duration=1OFDM symbol, the OCC for the use of frequency domain length being 6.As 1REG bundle=
When 6REG, as shown in fig. 11c, in 6 REG of a REG bundle, 3 groups, every group of 2 continuous REG, every group can be divided into
There are 6 RE mapping DMRS in 2 continuous REG.The OCC for the use of length being 6 in every group 2 continuous REG is multiple to support
The mutually orthogonal DMRS transmission of antenna port.
Example 3
The OCC for the use of frequency domain length being 3 in CORESET duration=1OFDM symbol, each REG, referring to figure
12。
Example 4:
When CORESET duration=2 or 3OFDM symbol, using time domain OCC, OCC length is equal to CORESET
duration.Referring to Figure 13.
Example 5:
When CORESET duration=2 or 3OFDM symbol, distinct symbols DMRS shift, due to distinct symbols
DMRS frequency domain position is misaligned, and is not available time domain OCC.It the use of frequency domain length can be 3 in each REG of each symbol
OCC, method is identical as CORESET duration=1OFDM symbol, referring to Figure 14.
Example 6:
Two orthogonal DMRS are supported by the way of FDM in a REG bundle.As shown in figure 15, when
CORESET duration be 1 OFDM symbol when, using in REG bundle FDM mode support two antenna ports, such as
Scheme port 0 and map DMRS using two RE in REG1, RE mapping a DMRS, port 1 then phase are used in another REG
Instead.When CORESET duration be 2,3 OFDM symbols when, except between different REG on every symbol use above-mentioned FDM
Mode, on time domain direction, DMRS RE used in port 0 and port 1 is adopted in the corresponding REG in adjacent-symbol same frequency position
With staggered form, to guarantee the performance of channel estimation.
Referring to Figure 16, a kind of process of the processing method of physical downlink control channel is illustrated in figure, this method
Executing subject is base station, the specific steps are as follows:
DMRS RE frequency domain mapping mode in step 1601, notice terminal PDCCH, so that described in the terminal use
DMRS RE frequency domain mapping mode and using according to CORESET duartion determine OCC or FDM in the PDCCH
DMRS is parsed.
In embodiments of the present invention, optionally, Xiang Suoshu terminal sends signaling, so that the terminal is aobvious by the signaling
Show or implicit instruction obtain PDCCH in DMRS RE frequency domain mapping mode.
In embodiments of the present invention, optionally, the DMRS RE frequency domain mapping mode is configured as:
Different cells uses different DMRS RE frequency domain mapping modes；Alternatively,
Different CORESET uses different DMRS RE frequency domain mapping modes；Alternatively,
Different wave beams uses different DMRS RE frequency domain mapping modes；Alternatively,
Different symbols uses different DMRS RE frequency domain mapping modes；Alternatively,
Different portions of bandwidth BWP uses different DMRS RE frequency domain mapping modes.
In this way, in embodiments of the present invention, orthogonal covering codes or time domain orthogonal overlay code using frequency domain across REG or across
The FDM of REG, allows PDCCH that multi-antenna port is supported to transmit, and improves the power system capacity of PDCCH, and by configuring DMRS
Frequency deviation can carry out PDCCH DMRS interference randomization so that the frequency domain position of difference DMRS is different.
A kind of terminal is additionally provided in the embodiment of the present invention, in the principle and the embodiment of the present invention solved the problems, such as due to terminal
The method of the processing of physical downlink control channel is similar, therefore the implementation of the terminal may refer to the implementation of method, repeats
Place is no longer applied and is stated.
Referring to Figure 17, a kind of structure of terminal is shown in figure, which includes:
Module 1701 is obtained, for obtaining the DMRS RE frequency domain mapping mode in PDCCH；
Determining module 1702, for determining corresponding OCC or corresponding FDM according to CORESET duartion；And
Parsing module 1703, for using the DMRS RE frequency domain mapping mode and the OCC or FDM to institute
The DMRS stated in PDCCH is parsed.
In embodiments of the present invention, optionally, the acquisition module 1701 is further used for: explicit or implicit by signaling
It indicates to obtain the DMRS RE frequency domain mapping mode in PDCCH.
In embodiments of the present invention, optionally, the acquisition module 1701 is further used for: straight by other configurations parameter
Connect or indirect gain PDCCH in DMRS RE frequency domain mapping mode.
Optionally, the DMRS RE frequency domain mapping mode is configured as:
Different cells uses different DMRS RE frequency domain mapping modes；Alternatively,
Different CORESET uses different DMRS RE frequency domain mapping modes；Alternatively,
Different wave beams uses different DMRS RE frequency domain mapping modes；Alternatively,
Different symbols uses different DMRS RE frequency domain mapping modes；Alternatively,
Different portions of bandwidth BWP uses different DMRS RE frequency domain mapping modes.
In embodiments of the present invention, optionally, the determining module 1702 is further used for: as CORESET duration
When equal to 1 orthogonal frequency division multiplex OFDM symbol, the frequency domain OCC or corresponding frequency division multiplexing using length for preset value are determined
FDM。
Optionally, the length is the frequency domain OCC of preset value are as follows:
Cover the OCC that 2 continuous DMRS RE length in a resource unit group REG or between REG are 2；
Alternatively,
Cover the OCC that continuous 6 DMRS RE length is 6 in continuous 2 REG in a REG beam bundle；
Alternatively,
The OCC that 3 DRMS RE length of covering are 3 in one REG.
In embodiments of the present invention, optionally, the determining module 1702 is further used for: as CORESET duration
Equal to 2 or when 3 OFDM symbols, the time domain OCC for being equal to CORESET duration using length is determined.
Terminal provided in this embodiment can execute above method embodiment, and it is similar that the realization principle and technical effect are similar, this
Details are not described herein again for embodiment.
A kind of base station is additionally provided in the embodiment of the present invention, in the principle and the embodiment of the present invention solved the problems, such as due to base station
The method of the processing of physical downlink control channel is similar, therefore the implementation of the base station may refer to the implementation of method, repeats
Place is no longer applied and is stated.
Referring to Figure 18, a kind of structure of network side equipment is shown in figure, which includes:
Sending module 1801, for notifying the DMRS RE frequency domain mapping mode in terminal PDCCH, so that the terminal makes
With the DMRS RE frequency domain mapping mode and according to the CORESET duartion OCC determined or FDM in the PDCCH
DMRS parsed.
In embodiments of the present invention, optionally, the sending module 1801 is further used for: Xiang Suoshu terminal sends letter
Enable so that the terminal by the signaling show or implicit instruction acquisition PDCCH in DMRS RE frequency domain mapping mode.
In embodiments of the present invention, optionally, the DMRS RE frequency domain mapping mode is configured as:
Different cells uses different DMRS RE frequency domain mapping modes；Alternatively,
Different CORESET uses different DMRS RE frequency domain mapping modes；Alternatively,
Different wave beams uses different DMRS RE frequency domain mapping modes；Alternatively,
Different symbols uses different DMRS RE frequency domain mapping modes；Alternatively,
Different portions of bandwidth BWP uses different DMRS RE frequency domain mapping modes.
Network side equipment provided in this embodiment can execute above method embodiment, implementing principle and technical effect
Similar, details are not described herein again for the present embodiment.
The step of method in conjunction with described in the disclosure of invention or algorithm can realize in a manner of hardware, can also
It is realized in a manner of being to execute software instruction by processor.Software instruction can be made of corresponding software module, software mould
Block can be stored on RAM, flash memory, ROM, EPROM, EEPROM, register, hard disk, mobile hard disk, CD-ROM or ability
In the storage medium of any other form known to domain.A kind of illustrative storage medium is coupled to processor, to make to handle
Device can be from the read information, and information can be written to the storage medium.Certainly, storage medium is also possible to handle
The component part of device.Pocessor and storage media can be located in ASIC.In addition, the ASIC can be located at core network interface equipment
In.Certainly, pocessor and storage media can also be used as discrete assembly and be present in core network interface equipment.
Those skilled in the art are it will be appreciated that in said one or multiple examples, function described in the invention
It can be realized with hardware, software, firmware or their any combination.It when implemented in software, can be by these functions
Storage in computer-readable medium or as on computer-readable medium one or more instructions or code transmitted.
Computer-readable medium includes computer storage media and communication media, and wherein communication media includes convenient for from a place to another
Any medium of one place transmission computer program.Storage medium can be general or specialized computer can access it is any
Usable medium.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all any modification, equivalent substitution, improvement and etc. on the basis of technical solution of the present invention, done should all
Including within protection scope of the present invention.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as the production of method, system or computer program
Product.Therefore, in terms of the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and hardware
Embodiment form.Moreover, it wherein includes computer available programs generation that the embodiment of the present invention, which can be used in one or more,
The meter implemented in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of code
The form of calculation machine program product.
The embodiment of the present invention be referring to according to the method for the embodiment of the present invention, equipment (system) and computer program product
Flowchart and/or the block diagram describe.It should be understood that can be realized by computer program instructions in flowchart and/or the block diagram
The combination of process and/or box in each flow and/or block and flowchart and/or the block diagram.It can provide these calculating
Processing of the machine program instruction to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices
Device is to generate a machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute
For realizing the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram
Device.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, those skilled in the art can carry out various modification and variations without departing from this hair to the embodiment of the present invention
Bright spirit and scope.In this way, if these modifications and variations of the embodiment of the present invention belong to the claims in the present invention and its wait
Within the scope of technology, then the present invention is also intended to include these modifications and variations.
Claims (21)
1. a kind of processing method of physical downlink control channel is applied to terminal, which is characterized in that the described method includes:
Obtain the demodulated reference signal resource unit DMRS RE frequency domain mapping mode in physical downlink control channel PDCCH；
Corresponding orthogonal covering codes OCC or corresponding frequency are determined according to control resource set CORESET duration duartion
Divide multiplexing FDM；And
The DMRS in the PDCCH is solved using the DMRS RE frequency domain mapping mode and the OCC or the FDM
Analysis.
2. the method according to claim 1, wherein the DMRS RE frequency domain mapping side obtained in PDCCH
Formula, comprising:
It explicitly or implicitly indicates to obtain the DMRS RE frequency domain mapping mode in PDCCH by signaling；
Alternatively,
The DMRS RE frequency domain mapping mode in PDCCH is directly or indirectly obtained by other configurations parameter.
3. according to the method described in claim 2, it is characterized in that, the DMRS RE frequency domain mapping mode is configured as:
Different cells uses different DMRS RE frequency domain mapping modes；Alternatively,
Different CORESET uses different DMRS RE frequency domain mapping modes；Alternatively,
Different wave beams uses different DMRS RE frequency domain mapping modes；Alternatively,
Different symbols uses different DMRS RE frequency domain mapping modes；Alternatively,
Different portions of bandwidth BWP uses different DMRS RE frequency domain mapping modes.
4. method according to claim 1, which is characterized in that corresponding OCC is determined according to the CORESET duartion,
Include:
When CORESET duration is equal to 1 orthogonal frequency division multiplex OFDM symbol, the frequency using length for preset value is determined
Domain OCC.
5. according to the method described in claim 4, it is characterized in that, the length is the frequency domain OCC of preset value are as follows:
Cover the OCC that 2 continuous DMRS RE length in a resource unit group REG or between REG are 2；
Alternatively,
Cover the OCC that continuous 6 DMRS RE length is 6 in continuous 2 REG in a REG beam bundle；
Alternatively,
The OCC that 3 DRMS RE length of covering are 3 in one REG.
6. method according to claim 1, which is characterized in that it is described determined according to the CORESET duartion it is corresponding
OCC, comprising:
When CORESET duration is equal to 2 or 3 OFDM symbols, determines and be equal to CORESET duration using length
Time domain OCC.
7. a kind of processing method of physical downlink control channel is applied to network side equipment, which is characterized in that the method
Include:
The DMRS RE frequency domain mapping mode in terminal PDCCH is notified, so that the terminal is mapped using the DMRS RE frequency domain
Mode and use carry out the DMRS in the PDCCH according to the CORESET duartion OCC determined or frequency division multiplexing FDM
Parsing.
8. the method according to the description of claim 7 is characterized in that the DMRS RE frequency domain mapping in the notice terminal PDCCH
Mode, comprising:
Signaling is sent to the terminal, so that the terminal is shown by the signaling or implicit instruction obtains in PDCCH
DMRS RE frequency domain mapping mode.
9. according to the method described in claim 8, it is characterized in that, the DMRS RE frequency domain mapping mode is configured as:
Different cells uses different DMRS RE frequency domain mapping modes；Alternatively,
Different CORESET uses different DMRS RE frequency domain mapping modes；Alternatively,
Different wave beams uses different DMRS RE frequency domain mapping modes；Alternatively,
Different symbols uses different DMRS RE frequency domain mapping modes；Alternatively,
Different portions of bandwidth BWP uses different DMRS RE frequency domain mapping modes.
10. a kind of terminal characterized by comprising
Module is obtained, for obtaining the demodulated reference signal resource unit DMRS RE in physical downlink control channel PDCCH
Frequency domain mapping mode；
Determining module, for determining corresponding orthogonal covering codes OCC according to control resource set CORESET duration duartion
Or FDM；And
Parsing module, for using the DMRS RE frequency domain mapping mode and the OCC or FDM in the PDCCH
DMRS parsed.
11. terminal according to claim 12, which is characterized in that the acquisition module is further used for: aobvious by signaling
Formula or implicit instruction obtain the DMRS RE frequency domain mapping mode in PDCCH；
Alternatively,
The DMRS RE frequency domain mapping mode in PDCCH is directly or indirectly obtained by other configurations parameter.
12. terminal according to claim 11, which is characterized in that the DMRS RE frequency domain mapping mode is configured as:
Different cells uses different DMRS RE frequency domain mapping modes；Alternatively,
Different CORESET uses different DMRS RE frequency domain mapping modes；Alternatively,
Different wave beams uses different DMRS RE frequency domain mapping modes；Alternatively,
Different symbols uses different DMRS RE frequency domain mapping modes；Alternatively,
Different portions of bandwidth BWP uses different DMRS RE frequency domain mapping modes.
13. terminal according to claim 11, which is characterized in that the determining module is further used for: working as CORESET
When duration is equal to 1 orthogonal frequency division multiplex OFDM symbol, the frequency domain OCC using length for preset value is determined.
14. terminal according to claim 13, which is characterized in that the length is the frequency domain OCC of preset value are as follows:
Cover the OCC that 2 continuous DMRS RE length in a resource unit group REG or between REG are 2；
Alternatively,
Cover the OCC that continuous 6 DMRS RE length is 6 in continuous 2 REG in a REG beam bundle；
Alternatively,
The OCC that 3 DRMS RE length of covering are 3 in one REG.
15. terminal according to claim 10, which is characterized in that the determining module is further used for: working as CORESET
When duration is equal to 2 or 3 OFDM symbols, the time domain OCC for being equal to CORESET duration using length is determined.
16. a kind of network side equipment characterized by comprising
Sending module, for notifying the DMRS RE frequency domain mapping mode in terminal PDCCH, so that described in the terminal use
DMRS RE frequency domain mapping mode and according to CORESET duartion determine OCC or frequency division multiplexing FDM to the PDCCH
In DMRS parsed.
17. network side equipment according to claim 16, which is characterized in that the sending module is further used for: to institute
State terminal send signaling so that the terminal by the signaling show or implicit instruction acquisition PDCCH in DMRS RE frequency domain
Mapping mode.
18. network side equipment according to claim 17, which is characterized in that the DMRS RE frequency domain mapping mode is matched
It is set to:
Different cells uses different DMRS RE frequency domain mapping modes；Alternatively,
Different CORESET uses different DMRS RE frequency domain mapping modes；Alternatively,
Different wave beams uses different DMRS RE frequency domain mapping modes；Alternatively,
Different symbols uses different DMRS RE frequency domain mapping modes；Alternatively,
Different portions of bandwidth BWP uses different DMRS RE frequency domain mapping modes.
19. a kind of terminal characterized by comprising processor, memory and be stored on the memory and can be at the place
The processing routine of the physical downlink control channel run on reason device, the processing routine of the physical downlink control channel
The processing such as physical downlink control channel described in any one of claims 1 to 6 is realized when being executed by the processor
The step of method.
20. a kind of network side equipment characterized by comprising processor, memory and be stored on the memory and can be
The processing routine of the physical downlink control channel run on the processor, the place of the physical downlink control channel
Reason program realizes the physical downlink control channel as described in any one of claim 7 to 9 when being executed by the processor
Processing method the step of.
21. a kind of computer readable storage medium, which is characterized in that be stored under physics on the computer readable storage medium
The realization when processing routine of the processing routine of Uplink Control Channel, the physical downlink control channel is executed by processor
The step of such as method of the processing of physical downlink control channel described in any one of claims 1 to 6；Alternatively, realizing
The step of method of the processing of physical downlink control channel as described in any one of claim 7 to 9.
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| CN112821995B (en) * | 2019-11-15 | 2022-05-10 | 大唐移动通信设备有限公司 | Feedback method of channel state information, base station and terminal |
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| CN111837369A (en) * | 2020-06-09 | 2020-10-27 | 北京小米移动软件有限公司 | Channel estimation method, device, equipment and storage medium |
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