CN110024323A - The method and device thereof of downlink control channel are sent or received in next generation wireless network - Google Patents
The method and device thereof of downlink control channel are sent or received in next generation wireless network Download PDFInfo
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- CN110024323A CN110024323A CN201880004512.1A CN201880004512A CN110024323A CN 110024323 A CN110024323 A CN 110024323A CN 201880004512 A CN201880004512 A CN 201880004512A CN 110024323 A CN110024323 A CN 110024323A
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- public search
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
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- 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
-
- 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
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
-
- 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
- H04L5/0078—Timing of allocation
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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
- H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
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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
- H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The present embodiment is related to the method and apparatus for sending or receiving downlink control channel in the next generation/5G Radio Access Network.Embodiment provides a kind of method for receiving downlink control channel by terminal, method includes the following steps: receiving configuration information relevant to public search space (CSS) from base station；Pass through the downlink control channel that public search space reception includes for dispatching the information of remaining minimum system information (RMSI), wherein configuration information is included in by the received Master Information Block of Physical Broadcast Channel (MIB), and is received from base station.
Description
Technical field
This disclosure relates to the next generation/5G radio access network for being discussed in third generation partner program (3GPP)
Transmission/reception downlink control channel method and apparatus in network (hereinafter, referred to " radio " or " NR ").More specifically
Ground, this disclosure relates to small to be sent by downlink control channel to user equipment for configuring public search space (CSS)
The specific down link control information in area (DCI) and the CSS by being configured send/receive downlink control channel
Method.
Background technique
Recently, 3GPP has approved " research about new radio access technologies ", is connect for the next generation/5G radio
Enter the research project that technology is studied.On the basis of the research about new radio access technologies, radio access network
Working group 1 (RAN WG1) has discussed that the frame structure for new radio (NR), Channel Coding and Modulation, waveform, multiple access connect
Enter method etc..Compared with long term evolution (LTE)/LTE- is advanced, need for NR to be designed as not only to provide improved data transmission rate,
But also meet the various requirement in specific and specific usage scenario.
It is proposed that enhanced mobile broadband (eMBB), large-scale machines type communication (mMTC) and super reliable and low latency are logical
Believe the representative usage scenario of (URLLC) as NR.In order to meet the requirement of each scene, compared with LTE/LTE- is advanced,
It asks and is designed to flexible frame structure.
In the NR with usage scenarios various in this way, it is desirable that the resource of configurating downlink link control channel, to be based on
The time/frequency resource different from each other of each user equipment come send/receive scheduling control information.
Particularly, it is necessary to which definition sends the specific downlink chain of cell for being configured to downlink control channel
The method that road controls the time and frequency resource of the public search space (CSS) of information (DCI).In addition, it is necessary to define to be used for
Configuration includes the downlink of the information for dispatching remaining minimum system information (RMSI) sent by public search space
The method of the parameter set of control channel.
Summary of the invention
Technical problem
One purpose of the disclosure is to provide in the NR with such various usage scenarios, is based on each user equipment
Time/frequency resource different from each other receives the downlink control channel of scheduling control information to send/receiving for sending/
Method.
Technical solution
According to one aspect of the disclosure, in order to solve these problems, it provides and receives downlink for user equipment
The method of control channel (PDCCH).This method comprises: the configuration information about public search space (CSS) is received from base station, with
And being received by public search space includes that downlink for dispatching the information of remaining minimum system information (RMSI) controls
Channel (PDCCH).Wherein, configuration information is included in through Physical Broadcast Channel (PBCH) from the received Master Information Block in base station
(MIB) in.
According to another aspect of the present disclosure, it provides one kind and sends downlink control channel (PDCCH) for base station
Method.This method comprises: configuration information of the configuration about public search space (CSS), sends configuration information to user equipment,
And being sent by public search space includes downlink control for dispatching the information of remaining minimum system information (RMSI)
Channel (PDCCH) processed.Wherein, configuration information is included in the main letter that user equipment is sent to by Physical Broadcast Channel (PBCH)
It ceases in block (MIB).
According to the still another aspect of the disclosure, provide a kind of for receiving the use of downlink control channel (PDCCH)
Family equipment.User equipment includes: receiver, is configured as receiving about public search space (CSS) from base station with confidence
Breath；And being received by public search space includes downlink for dispatching the information of remaining minimum system information (RMSI)
Control channel (PDCCH).Wherein, it is included in about the configuration information of public search space through Physical Broadcast Channel (PBCH)
From the received Master Information Block in base station (MIB).
According to the another aspect of the disclosure, provide a kind of for sending the base of downlink control channel (PDCCH)
It stands.Base station includes: controller, is configured as configuring the configuration information about public search space；And transmitter, matched
It is set to and sends configuration information to user equipment, and include for dispatching remaining minimum system by public search space transmission
The downlink control channel (PDCCH) of the information of information (RMSI).Wherein, it is wrapped about the configuration information of public search space
It includes in the Master Information Block (MIB) for being sent to user equipment by Physical Broadcast Channel (PBCH).
Beneficial effect
According to some embodiments of the present disclosure, can provide each for being based in the NR with various usage scenarios
The time/frequency resource different from each other of user equipment sends/receiving for sending/method for receiving scheduling control information.
Detailed description of the invention
Fig. 1 is to show orthogonal frequency division multiple access (OFDM) symbol using subcarrier spacing different from each other
The figure of arrangement.
Fig. 2 is to show the conceptual exemplary figure of portions of bandwidth (BWP).
Fig. 3 is the process for showing the user equipment according to an embodiment of the present disclosure for being used to receive downlink control channel
Flow chart.
Fig. 4 is to show the stream of the process according to an embodiment of the present disclosure that downlink control channel is sent for base station
Cheng Tu.
Fig. 5 is to show the block diagram of base station according to an embodiment of the present disclosure.
Fig. 6 is to show the block diagram of user equipment according to an embodiment of the present disclosure.
Specific embodiment
Hereinafter, the embodiment of present disclosure will be described in detail with reference to the attached drawings.Add in the element into each attached drawing
When adding appended drawing reference, if it would be possible, identical element will be indicated by the same numbers, although they are illustrated in not
In same attached drawing.In addition, the detailed description for being incorporated to known function and configuration herein will in being described below of the disclosure
It is omitted when determining that the description may be such that the theme of the disclosure does not know.
In the disclosure, wireless communication system refers to each for providing voice communications services, packet data service etc.
The system of kind communication service.Wireless communication system includes user equipment (UE) and base station (BS).
UE is the generic term for referring to equipment used in wireless communication.For example, UE may refer to but be not limited to support
Wideband Code Division Multiple Access (WCDMA), long term evolution (LTE), high-speed packet access (HSPA), international mobile telecommunication (IMT)-
The UE of 2020 (5G or new radio) etc., the movement station (MS) for supporting global system for mobile communications (GSM), user terminal (UT),
Subscriber station (SS), wireless device etc..
Base station or cell typically refer to the station with UE communication.Base station or cell are to relate to, but are not limited to general art below
Language: all various communication service areas and equipment, such as node B, evolved node B (eNB), g node B (gNB), low-power section
Point (LPN), sector, website, various types of antennas, base transceiver systems (BTS), access point, point are (for example, sending point, connect
Sink or transmitting-receiving point), relay node, million cells, macrocell, Microcell, picocell, Femto cell, remote radio end
(RRH), radio unit (RU) and small cell.
Each of various cells are controlled by base station.Therefore, base station can be divided into two classes.1) base station may refer to be formed and
Corresponding communication service area (such as million cells, macrocell, Microcell, picocell, Femto cell and cell) is provided
Device or 2) base station may refer to communication service area.In the case where 1), base station may refer to i) be formed and provided to appoint
The device of what corresponding communication service area, and controlled by identical entity or ii) interactively with each other and cooperation to be to form and mention
For the device of corresponding communication service area.According to base station use communication plan, base station may refer to point, transmission/receiving point,
Sending point, receiving point etc..In the case where 2), base station can be communication service area itself, wherein UE can from other UE and
Neighbor base station receives signal or is sent to it signal.
In the disclosure, cell can also refer to the covering of the signal sent from transmission/receiving point, have from sending point or hair
Give/receiving point send signal covering component carrier or transmission/receiving point itself.
UE and base station are to execute transmission for embodying technology described in this specification and technical spirit/two received
Entity.UE and BS is generic term, and is not limited to specific term or word.
Here, uplink (UL) refers to that sending data/from base station to base station from UE receives data, and downlink
(DL) refer to from base station to UE send data/from UE receive data.
UL transmission and DL transmission can be by being executed using following: the time division duplex of transmission i) is executed by different time-gap
(TDD) technology, ii) pass through frequency division duplex (FDD) technology or ii that different frequency executes transmission) frequency division duplex (FDD) and time-division
The hybrid technology of duplexing (TDD).
In addition, the relevant criterion of wireless communication system is defined based on single carrier or carrier wave to configuring UL and DL.
UL and DL passes through one or more control channel (such as physical downlink control channels (PDCCH), physics UL control channel
) (PUCCH) etc. control information is sent.UL and DL passes through data channel (such as physical downlink shared channel (PDSCH), physics UL
Shared channel (PUSCH) etc.) send data.
DL can refer to communication or communication path from multiple transmission/receiving points to UE, and UL can refer to from UE to multiple
The communication of transmission/receiving point or communication path.In DL, transmitter can be a part of multiple transmission/receiving points, and connect
Receiving device can be a part of UE.In UL, transmitter can be a part of UE, and receiver can be it is multiple send/
A part of receiving point.
Hereinafter, it by the transmission for the signal for passing through the channel of such as PUCCH, PUSCH, PDCCH or PDSCH and can connect
Receipts are described as sending and receiving for PUCCH, PUSCH, PDCCH or PDSCH.
Meanwhile higher level signaling includes sending radio resource control (RRC) signaling of the rrc message including RRC parameter.
Base station goes to the DL transmission of UE.Base station can send physical downlink control channel, for sending: i) DL control letter
Breath is such as received as scheduling needed for the DL data channel for the primary physical channel of unicast transmission；And ii) for passing through
The scheduling approval in-formation of UL data channel transmission.Hereinafter, it can be described in such a way that transmission/reception respective channels are this
Sent by each channel/receive signal.
Any one of multiple access technique can be applied to wireless communication system, and does not therefore apply to them and limit
System.For example, wireless communication system can use various multiple access techniques, such as time division multiple acess accesses (TDMA), frequency division multiple access
Access (FDMA), CDMA, orthogonal frequency-time multiple access (OFDMA), non-orthogonal multiple access (NOMA), OFDM-TDMA, OFDM-
FDMA, OFDM-CDMA etc..NOMA includes Sparse Code multiple access access (SCMA), low cost extension (LDS) etc..
At least one embodiment of the disclosure can be applied to the resource allocation in following: i) from GSM, WCDMA and HSPA
It is evolved to that LTE/LTE- is advanced and the asynchronous wireless communication of IMT-2020, ii) to be evolved to CDMA, CDMA-2000 synchronous with UMB's
Wireless communication.
In the disclosure, machine type communication (MTC) terminal may refer to support the terminal of inexpensive (or low complex degree),
Support the terminal etc. of coverage enhancement.As another example, MTC terminal, which can refer to, is defined for supporting that low cost is (or low multiple
Miscellaneous degree) and/or coverage enhancement the other terminal of predetermined class.
In other words, MTC terminal can refer to low cost (or low complex degree) UE classification/class newly defined in 3GPP version 13
Type, and execute the MTC relevant operation based on LTE.The MTC device of the disclosure can refer in 3GPP version 12 or before define
Device class/type, with existing LTE covering compared to supporting the covering enhanced perhaps to support low power consumption or can be with
Refer to low cost (or low complex degree) device class/type newly defined in version 13.MTC terminal can refer to be defined in version 14
The MTC terminal further enhanced.
In the disclosure, narrowband Internet of Things (NB-IoT) terminal refers to the terminal being wirelessly electrically accessed for supporting honeycomb IoT.
NB-IoT technology is intended to improved in-door covering, support, low latency sensitivity, low-down end to extensive low velocity terminal
Hold cost, low power consumption and the network architecture of optimization.
Propose the mobile broadband of the enhancing of the representative usage scenario as the NR discussed in 3 gpp recently
(eMBB), large-scale machines type communication (mMTC) and super reliable and low latency communication (URLLC).
In the disclosure, frequency associated with NR, frame, subframe, resource, resource block (RB), region, band, subband, control
Channel, data channel, synchronization signal, various reference signals, various signals and various message can be interpreted in the past or
The meaning that uses now or can be interpreted will be in the various meanings of future usage.
NR (new radio)
Recently, 3GPP has had been approved by " research about new wireless access technology ", is wirelessly connect for the next generation/5G
Enter the research project that technology is studied.On the basis of the research of new radio access technologies, to new radio (NR)
Frame structure, Channel Coding and Modulation, waveform, multiple access method etc. are discussed.
Compared with long term evolution (LTE)/LTE- is advanced, need for NR to be designed as not only to provide improved data transmission rate,
But also meet the various requirement in specific and specific usage scenario.Particularly, enhanced mobile broadband (eMBB), big is proposed
The representative usage scenario of scale machine type communication (mMTC) and super reliable and low latency communication (URLLC) as NR.For
The requirement for meeting each scene compared with LTE/LTE- is advanced needs to be designed to flexible frame structure.
Specifically, eMBB, mMTC, URLLC have been considered as the representative usage scenario of NR by 3GPP.Field is used due to each
Scape proposes different requirements to data transfer rate, delay, covering etc., it is therefore desirable to which one kind is for efficiently multiplexing based on ginseng
The radio resource unit different from each other of manifold (for example, subcarrier spacing (SCS), subframe, Transmission Time Interval (TTI) etc.)
Method as the side for efficiently meeting the requirement according to usage scenario by the frequency band for being supplied to any NR system
Case.
For this purpose, having discussed about i) being multiplexed by a NR carrier wave based on TDM, FDM or TDM/FDM technology
Each with subcarrier spacing different from each other (SCS) value parameter set method and ii) in the time domain configuration schedules unit when
The method for supporting one or more time quantums.In this respect, in NR, have been presented for subframe is defined as a seed type
Spatial structure.In addition, single sub-frame duration is determined as the reference parameter sets for defining corresponding sub-frame duration
Justice is 14 OFDM symbols with the normal CP expense based on 15kHz subcarrier spacing (SCS), as LTE.Therefore, NR
Subframe have 1ms duration.It is different from LTE, since the subframe of NR is the absolute reference duration, can by when
Gap and mini-slot are defined as the time quantum on the basis as practical UL/DL data dispatch.In this case, no matter parameter set
How, the quantity of the OFDM symbol of time slot is formed, the value of y has been defined as y=14.
Therefore, time slot can be formed by 14 symbols.According to the transmission direction of corresponding time slot, all symbols can be used for DL
Transmission or UL transmission or symbol can be used in the configuration of the part+gap the DL part+UL.
In addition, the mini-slot formed by symbol more less than time slot has been defined in parameter set (or SCS), and because
This, Short Time Domain scheduling interval can be arranged for the UL/DL data based on mini-slot and send or receive.In addition, long time domain tune
Degree interval can be arranged for sending or receiving by the UL/DL data that time slot polymerize.
Particularly, in the case where sending or receiving delayed key data (such as URLLC), when based on small based on having
Defined in the frame structure of the parameter set of SCS value (such as 15kHz) based on 0.5ms (7 symbols) or 1ms (14 symbols) when
Gap unit is come when executing scheduling, it may be difficult to meet delay and require.For this purpose, can define by OFDM symbol shape more less than time slot
At mini-slot, and the scheduling to the delayed key data of such as URLLC therefore can be executed based on mini-slot.
It is multiplexed in a NR carrier wave by using TDM as described above or FDM technology often in addition, having discussed
A parameter set with SCS value different from each other, according to prolonging based on time slot (or the mini-slot) defined for each parameter set
The method to dispatch data is required late.For example, as shown in Figure 1, in the SCS of 60kHz, since the length of symbol is shortened
The about a quarter of the symbol lengths of the SCS of 15kHz, therefore in both cases, when a time slot is by seven OFDM
When symbol formation, the slot length of the SCS based on 15kHz is 0.5ms, and the slot length of the SCS based on 60kHz is shortened to
About 0.125ms.
In this respect, it is carrying out meeting URLLC about by defining different SCS or difference TTI length in NR
With the discussion of the method for each requirement of eMBB.
Wider bandwidth operation
Typical LTE system supports the scalable bandwidth operation of LTE component carrier (CC).That is, when according to frequency
When deployment scenario configures a LTE CC, LTE service provider can use the division of the frequency range from 1.4MHz to 20MHz
Bandwidth configures LTE CC.Therefore, LTE UE has transmission/reception energy for supporting 20MHz bandwidth for a LTE CC
Power.
However, NR is designed to support the transmission/reception ability for having for bandwidth different from each other in a NR CC
NR UE.For this purpose, as shown in Fig. 2, the one or more portions of bandwidth (BWP) divided from NR CC can be configured.In addition, it is necessary to prop up
Flexible wider bandwidth operation is held, enables to configure and activate portions of bandwidth different from each other for each UE.
With reference to Fig. 2, n band can be defined by the way that the whole bandwidth of a NR CC is divided into one or more parts
Wide portion, and each UE can be activated and using one or more portions of bandwidth in N number of portions of bandwidth.
Therefore, NR CC can be divided into one or more portions of bandwidth.Therefore, each UE can be configured with one
Or multiple portions of bandwidth.One or more portions of bandwidth of the portions of bandwidth for UE configuration can be activated, and using one or
Multiple portions of bandwidth being activated send/receive UL/DL radio signal and radio channel to be directed to UE.
In addition, can be configured for each portions of bandwidth different from each other in the case where supporting multiple parameters collection in NR CC
Parameter set, with for sending/receive UL/DL radio signal and radio channel.
As described above, it is necessary to support to can satisfy Delay boundary conditions in the time domain in order to support URLLC service in NR
Short scheduling unit (alternatively, TTI (Transmission Time Interval)).On the contrary, in the case where eMBB or mMTC, in order to define in the time domain
Scheduling unit, compared with URLLC, the slightly long time interval resource allocation unit of use may in terms of control overhead and covering
More effectively.
Therefore, as the method for meeting various NR usage scenarios simultaneously, can be led to using hybrid parameter collection technology
Cross NR carrier wave support to be easy to define the short time interval resource allocation unit for being suitable for URLLC subcarrier spacing (for example,
Biggish subcarrier spacing, such as 60kHz, 120kHz etc.) parameter set and be suitable for the subcarrier spacing (example of eMBB and mMTC
Such as, be 15kHz for eMBB or be 3.75kHZ for mMTC) parameter set.
As another example, it in the NR carrier wave using specific set of parameters operation, can support simultaneously each with each other
Time domain scheduling unit, such as subframe, time slot or mini-slot of different length etc..
In accordance with an embodiment of the present disclosure, in the NR in view of these various usage scenarios, to for being configured to be directed to
Each UE send/receive based on time domain scheduling unit different from each other the method for the resource of the DL control channel of scheduling control information with
And the method for monitoring DL control channel by UE is discussed.
Particularly, it provides a kind of for being configured to the specific DL control information of DL control channel transmission cell
(DCI) method of public search space (CSS).
It should be noted that the method for configuration CSS according to an embodiment of the present disclosure can be interpreted that configuration wherein configures
The method of the control resource set (CORESET) of CSS.
In addition, the specific DCI of cell for including in the PDCCH sent by the CSS configured in CORESET may include:
I) scheduling control information about remaining minimum system information (RMSI), ii) the specific transmission power control of cell (TPC) correlation
Configuration information, iii) scheduling control information about paging message, iv) believe about the scheduling controlling of random access response (RAR)
Breath.
Hereinafter, related method is configured with CSS for ease of description and it can be readily appreciated that discussing, but this method
The method that can be interpreted to configure CORESET.
The embodiments described below can be applied to all UE, base station and core net using various mobile communication technologies
Network entity (MME).For example, embodiment of the disclosure can be applied not only to the mobile communication UE using Long Term Evolution, also
It can be applied to next generation mobile communication (5G mobile communication, new-RAT) UE, base station and access and locomotive function (AMF).For
Convenient for description, in the 5G radio net that CU is separated with DU, base station can indicate the eNB of LTE/E-UTRAN, or expression
Central location (CU), allocation unit (DU) and wherein CU and DU is implemented as in the object or gNB of an object logic at least
One.
In addition, the parameter set representations data in the disclosure send/received parameter characteristic and numerical value.It can be according to subcarrier
The value (hereinafter, referred to SCS or subcarrier spacing) at interval determines parameter set.That is, subcarrier spacing can be used for
Whether different from another determine each parameter set, and therefore different parameter sets may mean that the son of determining parameter set carries
Wave spacing is different.
Slot length in the disclosure can be represented as forming the quantity of the OFDM symbol of time slot or by Time Slot Occupancy
Time.For example, the length of one symbol can be represented as 14 in the case where using the parameter set based on 15kHz SCS
A multiple symbols of orthogonal frequency, or it is represented as 1ms.
In addition, remaining minimum system information (RMSI) is a part of system information, i.e. system information block (SIB) 1, and
UE can be sent to.Therefore, remaining minimum system information is properly termed as SIB1.UE is sent to by the SIB in addition to SIB1
System information be properly termed as other systems information (OSI).
Fig. 3 is to show the flow chart of the process according to an embodiment of the present disclosure that DL control channel is received for UE.
With reference to Fig. 3, at step S300, UE can receive the configuration information about public search space (CSS) from base station.
It is received at this point, the configuration information about public search space can be included in by Physical Broadcast Channel (PBCH)
Master Information Block (MIB) in.That is, base station can broadcast Master Information Block to the UE being located in cell by PBCH.At this point,
Configuration information about public search space can be included in Master Information Block by base station.
The example for the information being included in this configuration information, which can be, is sent to UE about by public search space
DL control channel subcarrier spacing (SCS) information.
As set forth above, it is possible to configure multiple parameters collection in NR CC/ cell, and the parameter set for sending PDCCH can
With difference.The configuration information about public search space can be included in accordingly, with respect to the parameter set configuration information of PDCCH
In.As described above, parameter set can be different according to subcarrier spacing value, and therefore subcarrier spacing information can be included
In the configuration information about public search space.
Another example for the information being included in this configuration information can be the time money about public search space
Information and frequency resource allocation information are distributed in source.
At this point, time resource distribution information can be the information in the period about public search space.The period can be by
Is defined as: i) fixed value, regardless of subcarrier spacing value or slot length perhaps ii) function of subcarrier spacing value or
It can be arranged by subcarrier spacing value for sending PSS/SSS or PBCH and slot length.
At this point, the frequency resource distributed by frequency resource allocation information can be assigned one or more continuous objects
It manages resource block (PRB).That is, frequency resource allocation information may include continuous about one group for forming public search space
The information of PRB.
In addition, it includes for dispatching remaining minimum system that UE can be received by public search space at step S310
The DL control channel (PDCCH) of the information of information (RMSI).
UE can pass through common search sky based on the configuration information about public search space received in step S300
Between receive DL control channel.
It may include to public small of all UE being located in cell by the received DL control channel of public search space
The specific DCI in area.At this point, the example for the information being included in the specific DCI of cell can be for dispatching remaining minimum system
The information of system information (RMSI), that is, the control information about RMSI.
Fig. 4 is to show the flow chart of the process according to an embodiment of the present disclosure that DL control channel is sent for base station.
With reference to Fig. 4, at step S400, base station can configure the configuration information about public search space (CSS).
The example for the information being included in this configuration information, which can be, is sent to UE about by public search space
DL control channel subcarrier spacing (SCS) information.
As set forth above, it is possible to configure multiple parameters collection in NR CC/ cell, and the parameter set for sending PDCCH can
With difference.The configuration information about public search space can be included in accordingly, with respect to the parameter set configuration information of PDCCH
In.As described above, parameter set can be different according to subcarrier spacing value, and therefore subcarrier spacing information can be included
In the configuration information about public search space.
Another example for the information being included in this configuration information can be the time money about public search space
Information and frequency resource allocation information are distributed in source.
At this point, time resource distribution information can be the information in the period about public search space.The period can be by
Is defined as: i) fixed value, but regardless of subcarrier spacing value or slot length how or ii) subcarrier spacing value function, or
Person can be arranged by subcarrier spacing value for sending PSS/SSS or PBCH and slot length.
At this point, the frequency resource distributed by frequency resource allocation information can be assigned one or more continuous objects
It manages resource block (PRB).Frequency resource allocation information may include the letter about one group of continuous P RB for forming public search space
Breath.
In addition, base station can send UE for the configuration information about public search space (CSS) at step S410.
It is received at this point, the configuration information about public search space can be included in by Physical Broadcast Channel (PBCH)
Master Information Block (MIB) in, such as it is described in reference diagram 3 above.That is, when broadcasting master to the UE being located in cell by PBCH
When block of information, the configuration information about public search space can be included in Master Information Block by base station.
In addition, it includes for dispatching remaining minimum system that base station can be sent by public search space at step S420
The DL control channel (PDCCH) of the information of system information (RMSI).
Base station can pass through common search based on the configuration information about public search space configured in step S400
Space sends DL control channel.
It may include to public small of all UE being located in cell by the received DL control channel of public search space
The specific DCI in area, as described above with reference to Figure 3.At this point, the example for the information being included in the specific DCI of cell can be
For dispatching the information of remaining minimum system information (RMSI), that is, the control information about RMSI.
Hereinafter, the above-mentioned method for being used for UE and BS configuration DL control channel will be discussed in detail according to various embodiments.
Some embodiments described below can individually or with any combination be configured.
The embodiment 1.CSS period is arranged
According to embodiment 1, can provide a kind of for being configured on time domain axis for CSS or with the CORSET that CSS is configured
The method of resource.It specifically, can be with about the configuration information of the time interval resource of the CSS in NR component carrier (CC)/cell
It is the information about the period for configuring CSS.
As described above, in NR, it is desirable that support multiple parameters collection based on SCS different from each other.Therefore, in NR, according to
The frequency band or usage scenario of NR cell, can be based on being held based on the frame structure of SCS and corresponding slot length different from each other
Row data dispatch.
Like this, in the NR based on multiple parameters collection, can be set with the fixed period, but regardless of SCS the period of CSS
It is worth and how is corresponding slot length.For example, in NR, can define unit (that is, unit of 1ms) of the CSS based on subframe come
Configuration.
As another example for the CSS period to be arranged, the CSS period can be set to the function of SCS value.Namely
Say, CSS period SCS value according to used in NR cell and it is different.At this point, the CSS period can be defined as the letter of SCS value
The function for the slot length being arranged in several or NR cell.
For example, CSS can be configured based on the unit of time slot defined in cell.Support multiple SCS's in NR cell
In the case of, CSS can be configured based on the SCS and corresponding slot length that send PSS/SSS or PBCH by it.As another
One example can configure one or more individual CSS according to each SCS and slot length.
As another example again, base station or network can be set the period of CSS and pass through the specific signaling of cell (such as
MIB or SIB) by the set period send UE.
For example, configuration information relevant to the CSS period can be included in the MIB sent by PBCH.With the CSS period
Relevant configuration information may is that slot unit i) based on set of transmission parameters configuration and corresponding slot length based on CSS
Period setting information, ii) unit based on radio frame or subframe period setting information, iii) with for based on one or
The unit of multiple radio frames configures the one or more time slots index or one or more subframe ropes of CSS in radio frame
Draw related information.
2 CSS subband arrangement of embodiment
According to embodiment 2, can provide a kind of for being configured on time domain axis for CSS or with the CORSET that CSS is configured
The method of resource.Specifically, the distribution information of the frequency interval resource of the CSS in NR component carrier (CC)/cell can be son
The portions of bandwidth of one group of continuous physical resource block (PRB) with relevant distribution information or the useful CSS configuration of configuration is relevant
Distribute information.
As described above, based on subframe or time slot unit configure CSS in the case where, for define for subframe or when
The method that one group of PRB (that is, one or more subbands) of CSS is configured in gap is as follows.
One group of PRB can be with i) each or ii) two or more factors (such as, the physical district ID (PCI) of cell,
Subframe or time slot index, cell system bandwidth (quantity of PRB) or SCS value) function formal definition.
As another example, base station can be set whether which of application factor or application factor, and then lead to
It crosses the specific RRC signaling of cell (such as MIB or SIB) and sends UE for the result of setting.Then, UE can be based on from base station
Signaling configure one or more subbands to be directed to CSS.
For example, base station can make UE pass through the specific RRC signaling of cell (such as MIB or SIB) UE is arranged whether by base
CSS subband hopping is applied in the unit of subframe or time slot.
One or more CSS subbands that unit based on each subframe or time slot defines depend on corresponding subframe or time slot
It indexes and can be identical or frequency hopping.
Base station or network can directly be configured to the frequency resource allocation information of configuration CSS, and then pass through cell
The information configured is sent UE by specific RRC signaling (such as MIB or SIB).
It is sent for example, the frequency resource allocation information for configuring CSS can be included in MIB by PBCH.At this point,
Frequency resource allocation information can be the portions of bandwidth point for configuring CSS or PRB distribution information in corresponding portions of bandwidth
With information.
Alternatively, can be limited by it in corresponding NR CC/ cell for configuring the frequency resource of CSS sends SS
The frequency band of block.For example, CSS can be configured by executing the bandwidth of PSS/SSS or PBCH transmission by it.It specifically, can be with
CSS is configured by PRB identical with the PRB for executing PSS/SSS or PBCH transmission by it.Alternatively, can be by including
The portions of bandwidth of PSS/SSS or PBCH configures CSS.
The set of transmission parameters of 3 PDCCH of embodiment configures
According to embodiment 3, can provide a kind of for configuring includes sending by CSS or with the CORESET that CSS is configured
The method of the set of transmission parameters of the DL control channel of the specific DCI of cell.
As described above, in the case where supporting multiple parameters collection in NR cell, it can be each for the configuration of each parameter set
Individual CSS.Furthermore it is possible to only be defined based on the reference parameter sets (that is, single parameter set) for PSS/SSS or PBCH transmission
CSS。
Meanwhile after being configured with the set of transmission parameters of CSS, base station or network can pass through the specific RRC signaling of cell
The result of configuration is sent UE by (such as, MIB or SIB).
For example, configuration information relevant to the set of transmission parameters of CSS with the length of SCS or cyclic prefix (CP) (for example, have
The configuration information etc. of pass) it can be included in the MIB sent by PBCH.
In addition, as the method for UE configuration CSS, can define will be using more by purpose/purpose classification in NR
A CSS executes CSS configuration with the CORESET of CSS configuration.
Specifically, individual CSS, such as, i can be defined by purpose/purposes) for sending the scheduling controlling including RMSI
The CSS of the PDCCH of information, ii) for sends include about other systems information (that is, except through PBCH transmission MIB or
System information except RMSI) scheduling control information PDCCH CSS, iii) for send about random access response
(RAR) CSS of scheduling control information, iv) for sending the CSS, v of the scheduling control information about paging message) for needle
To the CSS or vi of the rollback operation of the specific search space UE (USS) by UE configuration) for sending multicast/broadcast control
The CSS of information (TPC command etc.).It should be noted that one or more CSS in the above CSS can be a variety of specific mesh
/ purposes is shared.
Therefore, in the case where defining multiple CSS, each CSS configuration can be classification.That is, can lead to
It crosses MIB, RMSI etc. and is sequentially performed each of the CSS configuration information discussed in above-described embodiment 1,2 and 3.
For example, the CSS configuration relevant information of RMSI can be sent by the MIB sent by PBCH, and hereafter may be used
With the CSS for being sent by RMSI for other systems information configure relevant information or for paging, the CSS of RAR etc. configure phase
Close information.According to purpose/purposes define multiple CSS and each CSS configuration be classification all situations can be included in
In the range of the embodiment of upper discussion.
Fig. 5 is to show the block diagram of base station according to an embodiment of the present disclosure.
With reference to Fig. 5, base station includes controller 510, transmitter 520 and receiver 530.
Controller 510 is configured as the integrated operation of control base station 500 to be used to send DL control channel, on executing
State embodiment.
Specifically, controller can configure the configuration information about public search space (CSS).
The example for the information being included in this configuration information, which can be, is sent to UE about by public search space
DL control channel subcarrier spacing (SCS) information.
As set forth above, it is possible to configure multiple parameters collection in NR cell, and the parameter set for sending PDCCH can be with that
This is different.The configuration information about public search space can be included in accordingly, with respect to the parameter set configuration information of PDCCH
In.As described above, parameter set can be different according to subcarrier spacing value, and therefore subcarrier spacing information can be included
In the configuration information about public search space.
Another example for the information being included in this configuration information can be the time money about public search space
Information and frequency resource allocation information are distributed in source.
At this point, time resource distribution information can be the information in the period about public search space.The period can be by
Is defined as: i) fixed value, but regardless of subcarrier spacing value or slot length how or ii) subcarrier spacing value function, or
Person can be arranged by subcarrier spacing value for sending PSS/SSS or PBCH and slot length.
At this point, the frequency resource distributed by frequency resource allocation information can be assigned one or more continuous objects
It manages resource block (PRB).Frequency resource allocation information may include the letter about one group of continuous P RB of configuration public search space
Breath.
Transmitter 520 and receiver 530 are configured to send to UE and receive from UE to execute as described above
Signal needed for embodiment, message and data.
Specifically, transmitter 520 is configured as sending UE for the configuration information about public search space, and passes through
Public search space transmission includes the DL control channel (PDCCH) for dispatching the information of remaining minimum system information (RMSI).
It is sent at this point, the configuration information about public search space can be included in by Physical Broadcast Channel (PBCH)
Master Information Block (MIB) in, and UE can be sent to, as described above with reference to figure 4.
Base station can send DL control letter by public search space based on the configuration information about public search space
Road.
As described above, may include to all UE being located in cell by the received DL control channel of public search space
The specific DCI of public cell.At this point, the example for the information being included in the specific DCI of cell can be it is surplus for dispatching
The information of remaining minimum system information (RMSI), that is, the control information about RMSI.
Fig. 6 is to show the block diagram of UE according to an embodiment of the present disclosure.
It include receiver 610, controller 620 and transmitter 630 with reference to Fig. 6, UE.
Receiver 610 is configured as receiving DL control information, data and message from base station by corresponding channel.
Specifically, receiver 610 can be configured as the configuration information received about public search space (CSS).
It is received at this point, the configuration information about public search space can be included in by Physical Broadcast Channel (PBCH)
Master Information Block (MIB) in.That is, base station can be with when broadcasting Master Information Block to the UE being located in cell by PBCH
It include in Master Information Block by the configuration information about public search space.
The example for the information being included in this configuration information, which can be, is sent to UE about by public search space
DL control channel subcarrier spacing (SCS) information.
As set forth above, it is possible to configure multiple parameters collection in NR cell, and the parameter set for sending PDCCH can be with that
This is different.The configuration information about public search space can be included in accordingly, with respect to the parameter set configuration information of PDCCH
In.As described above, parameter set can be different according to subcarrier spacing value, and therefore subcarrier spacing information can be included
In the configuration information about public search space.
Another example for the information being included in this configuration information can be the time money about public search space
Information and frequency resource allocation information are distributed in source.
At this point, time resource distribution information can be the information in the period about public search space.The period can be by
Is defined as: i) fixed value, but regardless of subcarrier spacing value or slot length how or ii) subcarrier spacing value function, or
Person can be arranged by subcarrier spacing value for sending PSS/SSS or PBCH or slot length.
At this point, the frequency resource distributed by frequency resource allocation information can be assigned one or more continuous objects
It manages resource block (PRB).Frequency resource allocation information may include the letter about one group of continuous P RB of configuration public search space
Breath.
It includes for dispatching remaining minimum system information that receiver 610, which can be configured as through public search space reception,
(RMSI) the DL control channel (PDCCH) of information.
It may include to public small of all UE being located in cell by the received DL control channel of public search space
The specific DCI in area.At this point, the example for the information being included in the specific DCI of cell can be for dispatching remaining minimum system
The information of information (RMSI), that is, the control information about RMSI.
Controller is configured as the integrated operation of control UE to be used to receive DL control channel, to execute above-mentioned implementation
Example.
Standard convention relevant to above-described embodiment or standard document constitute a part of this disclosure.Therefore, it should manage
A part of the content of standard convention and standard document is incorporated in detailed description and claim and is included in this by solution
In scope of disclosure.
Although describing preferred embodiment of the present disclosure for illustrative purpose, those skilled in the art will recognize
Know, can be carried out in the case where not departing from the scope and spirit of the present invention as disclosed in appended claims various
Modification, addition and substitution.Therefore, the exemplary of the disclosure is described for unrestricted purpose but in order to describe embodiment
Aspect, therefore, the scope of the present disclosure should not necessarily be limited by such embodiment.The protection scope of the disclosure should be wanted based on following right
It asks to explain, and all technical concepts in the range of its equivalent should be interpreted to be included in the scope of the present disclosure
It is interior.
Cross reference to related applications
If applicable, this application claims the number of patent application 10-2017- submitted in South Korea on May 30th, 2017
0002589, the number of patent application 10-2017-0066632 that is submitted on January 4th, 2018, submitted on January 4th, 2018 it is special
Priority under the 35 U.S.C § 119 (a) of sharp application number 10-2018-0001157, the full content of the application pass through reference
It is incorporated herein.In addition, the non-provisional application is excellent in countries other than US's requirement with identical reason based on South Korea patent application
It first weighs, entire contents are incorporated herein by reference.
Claims (20)
1. the method that one kind receives downlink (DL) control channel (PDCCH) for user equipment, which comprises
The configuration information about public search space (CSS) is received from base station；And
Pass through the DL control that public search space reception includes for dispatching the information of remaining minimum system information (RMSI)
Channel (PDCCH),
Wherein, the configuration information is included in through Physical Broadcast Channel (PBCH) from the received Master Information Block in the base station
(MIB) in.
2. according to the method described in claim 1, wherein, the configuration information includes the subcarrier about the DL control channel
It is spaced (SCS) information.
3. according to the method described in claim 1, wherein, the configuration information includes the time about the public search space
Resource allocation information and frequency resource allocation information.
4. according to the method described in claim 3, wherein, the time resource distribution information is about the public search space
Period information.
5. according to the method described in claim 3, wherein, the frequency resource about the public search space is assigned one
Or multiple continuous physical resource blocks (PRB).
6. the method that one kind sends downlink (DL) control channel (PDCCH) for base station, which comprises
Configure the configuration information about public search space (CSS)；
User equipment is sent by the configuration information；And
The DL control including the information for dispatching remaining minimum system information (RMSI) is sent by the public search space
Channel (PDCCH) processed,
Wherein, the configuration information is included in the main information that the user equipment is sent to by Physical Broadcast Channel (PBCH)
In block (MIB).
7. according to the method described in claim 6, wherein, the configuration information includes the subcarrier about the DL control channel
It is spaced (SCS) information.
8. according to the method described in claim 6, wherein, the configuration information includes the time about the public search space
Resource allocation information and frequency resource allocation information.
9. according to the method described in claim 8, wherein, the time resource distribution information is about the public search space
Period information.
10. according to the method described in claim 8, wherein, the frequency resource about the public search space is assigned one
A or multiple continuous physical resource blocks (PRB).
11. one kind is for receiving the user equipment of downlink (DL) control channel (PDCCH), comprising:
Receiver is configured as receiving configuration information about public search space from base station, and public is searched by described
The reception of rope space includes the DL control channel (PDCCH) for dispatching the information of remaining minimum system information (RMSI),
Wherein, the configuration information is included in through Physical Broadcast Channel (PBCH) from the received Master Information Block in the base station
(MIB) in.
12. user equipment according to claim 11, wherein the configuration information includes about the DL control channel
Subcarrier spacing (SCS) information.
13. user equipment according to claim 11, wherein the configuration information includes about the public search space
Time resource distribution information and frequency resource allocation information.
14. user equipment according to claim 13, wherein time resource distribution information public is searched about described
The information in the period in rope space.
15. user equipment according to claim 13, wherein the frequency resource about the public search space is assigned
There are one or more continuous physical resource blocks (PRB).
16. one kind is for sending the base station of downlink (DL) control channel (PDCCH), comprising:
Controller configures the configuration information about public search space (CSS)；And
Transmitter is configured as sending the configuration information to user equipment, and is sent out by the public search space
The DL control channel (PDCCH) including the information for dispatching remaining minimum system information (RMSI) is sent,
Wherein, the configuration information is included in the main information that the user equipment is sent to by Physical Broadcast Channel (PBCH)
In block (MIB).
17. according to the method for claim 16, wherein the configuration information includes the son load about the DL control channel
Wave spacing (SCS) information.
18. according to the method for claim 16, wherein the configuration information include about the public search space when
Between resource allocation information and frequency resource allocation information.
19. according to the method for claim 18, wherein the time resource distribution information is empty about the common search
Between period information.
20. according to the method for claim 18, wherein the frequency resource about the public search space is assigned one
A or multiple continuous physical resource blocks (PRB).
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2017-0002589 | 2017-01-06 | ||
| KR20170002589 | 2017-01-06 | ||
| KR10-2017-0066632 | 2017-05-30 | ||
| KR1020170066632A KR20180081669A (en) | 2017-01-06 | 2017-05-30 | Apparatus and method of common control information transmission for NR(New Radio) |
| KR10-2018-0001157 | 2018-01-04 | ||
| KR1020180001157A KR102114096B1 (en) | 2017-01-06 | 2018-01-04 | Methods for transmitting and receiving downlink control channel for new radio and Apparatuses thereof |
| PCT/KR2018/000221 WO2018128440A1 (en) | 2017-01-06 | 2018-01-05 | Method for transmitting or receiving downlink control channel in next generation wireless network and apparatus therefor |
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| CN110024323A true CN110024323A (en) | 2019-07-16 |
| CN110024323B CN110024323B (en) | 2022-02-22 |
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| CN201880004512.1A Active CN110024323B (en) | 2017-01-06 | 2018-01-05 | Method for transmitting or receiving downlink control channel in NR and apparatus therefor |
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| CN (1) | CN110024323B (en) |
| WO (1) | WO2018128440A1 (en) |
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| Publication number | Publication date |
|---|---|
| CN110024323B (en) | 2022-02-22 |
| WO2018128440A1 (en) | 2018-07-12 |
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